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Showing papers on "Gear shaping published in 2014"


Patent
09 Jul 2014
TL;DR: In this paper, a method for fabricating a wind-driven generator gear is described, which includes the following steps of providing a workblank used for fabricizing the generator gear, forging of the workblank, normalizing treatment, turning, gear cutting, gear shaving, thermal treatment, and grinding.
Abstract: The invention discloses a method for fabricating a wind-driven generator gear. The method includes the following steps of (1) providing a workblank used for fabricating the gear, (2) forging of the workblank, (3) normalizing treatment, (4) turning, (5) gear cutting, (6) gear shaving, (7) thermal treatment, and (8) grinding, wherein the step (2) includes that the workblank is forged by hot die forging; the step (3) includes that the workblank after being forged is treated by an isothermal normalizing technology; the step (4) includes that turning is performed on the workblank which is subjected to normalizing treatment by a numerically controlled lathe; the step (5) includes that hobbing and gear shaping are performed by a gear hobbing machine and a gear shaping machine; the step (6) includes that gear shaving is performed by a gear shaving machine; the step (7) includes that carburizing and quenching treatment are performed; the step (8) includes that inner holes, end faces and external diameter portions of a shaft of the gear which is subjected to thermal treatment are subjected to finish machining, and thereby, dimensional precision is improved and form and location tolerance is reduced. The gear of the wind-driven generator stands huge moment of force of a wind wheel so that the gear of the wind-driven generator is necessarily resistant to fatigue damage by the moment of force.

17 citations


Patent
20 Aug 2014
TL;DR: In this paper, the utility model relates to a gear shaping tool clamp for gear internal teeth, which is simple in structure, and the machined gear is convenient and rapid to assemble and disassemble.
Abstract: The utility model relates to a gear shaping tool clamp for gear internal teeth. The gear shaping tool clamp comprises a gear machining machine table, wherein a positioning housing washer is arranged on the machine table, a convex ring is arranged on the upper end face of the positioning housing washer, a central spindle and an anti-rotating positioning key are arranged in a through hole in the middle of the positioning housing washer, the convex part of the upper end of the central spindle is provided with an external spline matched with an internal spline of a machined gear, a thread part at the lower end of the central spindle stretches out of the positioning housing washer and is connected with a locking nut, a threaded through hole is formed in the middle of the central spindle, an opening in the upper end of the threaded through hole is provided with a funnel-shaped conical surface, an expansion screw is in threaded connection in the threaded through hole, and the upper end of the expansion screw is provided with a conical surface which is matched with the funnel-shaped conical surface to make the convex part of the upper end of the central spindle expand. The clamp is simple in structure, and the machined gear is convenient and rapid to assemble and disassemble.

12 citations


Journal ArticleDOI
TL;DR: In this article, a novel approach for dynamic characteristics analysis of machine tools based on unit structure (US) is reported, which can be used for dynamic attributes analysis of the machine tools.
Abstract: A novel approach, which can be used for dynamic characteristics analysis of machine tools based on unit structure (US), is reported in this paper. The concepts of unit structures for design of machine tools are defined. In order to satisfy the dynamic characteristics requirement of high natural frequency and light-weight of US, a design method of multi-disciplinary optimization of NSGA-II about unit structures driven by natural frequency and mass is developed. Through analyzing the unit structures, key factors affecting the natural frequency and mass are extracted, and the mathematical models of natural frequency and mass about unit structures are also established by using central composite design and response surface model. The goal of high natural frequency and light-weight is reached by using the multi-objective genetic algorithms. The Pareto optimal set is also obtained. The dynamic behavior of US is investigated by the experimental modal analysis. To show the efficiency of the proposed novel method, the example of YKW51250 gear shaping machine bed is used. Through optimization of NSGA-II about US of YKW51250 machine bed, the natural frequency of YKW51250 gear shaping machine bed is increased by 30.4% and its mass decreased by 5.2% comparing with the original design. By studying the dynamic characteristics of the simplified machine tools bed, useful laws are obtained, and these laws can be used in primary design of NC machine tools structures. The optimal method based on US can be also applied to the dynamic optimal design of machine tools and other similar equipments.

11 citations


Patent
24 Sep 2014
TL;DR: In this article, a gear shaping and expanding fixture consisting of a screw rod, a taper shaft screwed with the lower part of the screw rod and an expansion sleeve arranged on the outer side of the taper-shaft in a sleeving manner is described.
Abstract: The invention discloses a gear shaping and expanding fixture which comprises a screw rod, a taper shaft screwed with the lower part of the screw rod and an expansion sleeve arranged on the outer side of the taper shaft in a sleeving manner, wherein a to-be-processed outer gear ring is arranged on the outer side of the expansion sleeve in a sleeving manner; and the expansion sleeve is formed by fixedly connecting an expansion sleeve body and an expansion sleeve base, the expansion sleeve body comprises 2-6 expansion ribs which are fixedly connected with the expansion sleeve base, are coaxial and have the same diameter, and an inner ring surface of the expansion sleeve is in wedged matching with an outer cylindrical surface of the taper shaft According to the gear shaping and expanding fixture, through the wedged matching between the taper shaft and the expansion sleeve, the expansion sleeve expands and loosens the to-be-processed outer gear ring when the taper shaft moves up and down, that is, the zero clearance fit between the to-be-processed outer gear ring and the gear shaping fixture is guaranteed, the end surface of the to-be-processed outer gear ring is pressed tightly, the influence of clearance and end surface run-out on the product quality is eliminated, accordingly, a workpiece is convenient to load and unload, the gear shaping fixture is convenient to replace, the stability of the product quality and the qualified rate are improved, and the auxiliary time is shortened

7 citations


Patent
09 Apr 2014
TL;DR: In this paper, a multilayer gear shaping type friction generator, comprising an upper friction surface, a lower friction surface and a connecting piece, is presented. And the generator can generate power by pressure, pulling forces and vibration.
Abstract: The utility model discloses a multilayer gear shaping type friction generator, comprising an upper friction surface, a lower friction surface and a connecting piece, wherein the upper friction surface is positioned at the upper part of the generator and comprises a first insulation layer, and one surface of the first insulation layer is plated with a first conducting layer; the lower friction surface is positioned at the lower part of the generator and comprises a second conducting layer or a third insulation layer plated with a third conducting layer at one surface; the first insulation layer and a second conducting friction layer/ the third insulation layer are tooth-shaped, intercrossed and engaged with each other; and the upper friction surface and the lower friction surface are connected together through the connecting piece. The multilayer gear shaping type friction generator can generate power by pressure, pulling forces and vibration. In the same spatial structure, the multilayer gear shaping type friction generator enables the friction area to increase by several times, and the power output and the current output of the generator are improved. A gear shaping type structure enables the multilayer gear shaping type friction generator to have output with minor pressure and vibration.

6 citations


Patent
17 Dec 2014
TL;DR: In this article, a tool for gear shaping of an outer gear ring comprises a base body, a diameter adjusting shaft, a hydraulic cylinder and a plurality of gear ring fixing mechanisms.
Abstract: A tool for gear shaping of an outer gear ring comprises a base body, a diameter adjusting shaft, a hydraulic cylinder and a plurality of gear ring fixing mechanisms. A through hole is formed in the middle of the base body, a plurality of T-type sliding grooves with the number equal to that of the gear ring fixing mechanisms are distributed with the through hole as the center, any one of the gear ring fixing mechanisms is arranged in one T-type sliding groove and can freely slide in the corresponding T-type sliding groove, any one of the gear ring fixing mechanisms comprises a sliding locating seat, a pressing plate and a pressing plate screw, the sliding locating seats are arranged in the T-type sliding grooves of the base body, the pressing plates are arranged at the outer ends of the sliding locating seats through the pressing plate screws, the diameter adjusting shaft is located in the through hole of the base body, the hydraulic cylinder is arranged on the lower portion of the base body, and a piston of the hydraulic cylinder is arranged in the through hole and is connected with the lower end of the diameter adjusting shaft. The tool has the advantages that after the structure is adopted, outer gear rings of different diameters can be clamped, and good universality is achieved.

6 citations


Journal ArticleDOI
TL;DR: In this article, gear shaping is an efficient cutting method available for internal helical non-circular gears, but gear hobbing is not, and four methods and models of generating motion were built.
Abstract: Gear shaping is an efficient cutting method available for internal helical non-circular gears, but gear hobbing is not. Four methods and models of generating motion were built. Virtual shaping revealed that the method of equal arc-length of gear billet has the highest machining precision. Three methods of primary motion were built and analyzed respectively by using a kinetic simulation, which revealed that the method of keeping a constant velocity has the best dynamic performance. Two methods of additional motion were offered. Virtual shaping revealed that the two methods have the same precision, whether the gear has a right-hand helix or left-hand helix. Finally, two optimal shaping models were provided, and performed shaping experiments, respectively. The experiments showed that the shaping strategies and models are correct and feasible. Tooth-flank detections revealed that every tooth of the gears has the same precision using the optimal shaping models.

5 citations


Patent
19 Mar 2014
TL;DR: In this paper, a method for machining an inner gear ring for a speed reducer comprises the following steps of (1) workblank forging, (2) rough turning, (3) hardening and tempering, (4) fine turning, mounting hole drilling, (5) gear shaping and washing and packing.
Abstract: A method for machining an inner gear ring for a speed reducer comprises the following steps of (1) workblank forging, (2) rough turning, (3) hardening and tempering, (4) fine turning, (5) mounting hole drilling, (6) gear shaping and (7) washing and packing. The method is simple in production process, and improves production efficiency, and production cost is lowered. The method is used for producing car accessories.

5 citations


Patent
30 Jul 2014
TL;DR: In this article, a gear shaping manipulator for a powder metallurgy shaping machine is presented, which can automatically perform material charging, positioning and material discharging, and the safety coefficients and the production efficiency are high.
Abstract: The invention provides a gear shaping manipulator for a powder metallurgy shaping machine. The gear shaping manipulator comprises a material feeding bottom plate, wherein a material feeding passage, a material pushing device and a material feeding device are fixed on the material feeding bottom plate; the material pushing device located at the outlet end of the material charging passage comprises a material baffle, a material pushing cylinder and a pushing block; the material feeding device located at the outlet end of the material pushing device comprises a material feeding cylinder, a sliding block, a blocking piece and a rack, the material feeding cylinder is perpendicular to the material pushing cylinder, the sliding block is fixedly mounted on the output shaft of the material feeding cylinder, the rack and the blocking piece are parallelly arranged on the sliding block, an accommodating cavity for clamping a gear is formed between the rack and the blocking piece, when the sliding block moves to an upper dead center, the accommodating cavity is located at the outlet end of a material pushing channel, and when the sliding block moves to a lower dead center, the accommodating cavity is located right above a mold cavity; the blocking piece is mounted on the sliding block in a rotating mode through a torsion spring, and a chamfering is formed at the inlet end of the rack. The gear shaping manipulator for the powder metallurgy shaping machine can automatically perform material charging, positioning and material discharging, and the safety coefficients and the production efficiency are high.

4 citations


Patent
22 Jan 2014
TL;DR: In this article, a medium and large modulus cylindrical gear forming process and a special die are described, which consists of an internal die and an external die sleeve arranged outside the internal die in a sleeved mode.
Abstract: The invention discloses a medium and large modulus cylindrical gear forming process and a special die thereof. The process includes the steps that firstly, a raw material is preprocessed to form hollow blank; secondly, pre-forming warm forging processing is performed on the hollow blank to form initial gear blank; thirdly, fine-forming cold extrusion gear shaping processing is performed on the initial gear blank to form original gear blank; finally, crowned tooth finish machining and heat treatment are performed on the original gear blank. The special die comprises an internal die and an external die sleeve arranged outside the internal die in a sleeved mode, a tooth-shaped die cavity is formed in the middle of the internal die, and the internal die is connected with the external die sleeve in a small-taper interference fit mode. According to the medium and large modulus cylindrical gear forming process and the special die of the medium and large modulus cylindrical gear forming process, when medium and large modulus gears are manufactured, the utilization rate of steel is improved, the gear production period and gear production energy consumption cost are reduced, and the bending resistance of teeth on the manufactured gears is greatly improved.

4 citations


Patent
12 Mar 2014
TL;DR: In this paper, the gear milling clamp of a thin wall member is characterized by a double-end bolt, a spring and a pressure plate are arranged on the double-ended bolt which is fixed on the pedestal through a hexagonal nut, the pressure plate comprises a pressure head, a connecting back with an adjusting screw and a support column, a positioning cylinder and an opening gasket, and the positioning cylinder comprises a positioning end and a cylindrical shell.
Abstract: The utility model relates to a gear milling clamp of a thin wall member. The gear milling clamp comprises a pedestal and a gear milling mandrel, and is characterized in that a double-end bolt is arranged on the pedestal, a spring and a pressure plate are arranged on the double-end bolt which is fixed on the pedestal through a hexagonal nut, the pressure plate comprises a pressure head, a connecting back with an adjusting screw and a support column, a positioning cylinder and an opening gasket are arranged on the gear milling mandrel, the positioning cylinder comprises a positioning end and a cylindrical shell, the external diameter of the positioning end is 8-12mm larger than the external diameter of the cylindrical shell, the external diameter of the positioning end is 0.04-0.1mm smaller than the internal diameter of the thin-wall outer spline of a part, and the gear milling mandrel is secured on the pedestal through an inner hexagonal screw. The gear milling clamp is simple in structure, easy for manufacture and convenient for mounting and dismounting parts. The thin wall outer spline end of a part is positioned in an auxiliary manner through the positioning cylinder, and the thin wall outer spline end of the part may not swing when the gear shaping machine shapes gears. Shaping gears are high in precision and stable in quality, and the qualified rate and the processing efficiency of shaping gears of the thin-wall outer spline of parts are improved. The production cost is reduced.

Patent
16 Apr 2014
TL;DR: The internal gear shaping fixture has the advantages that a shell with a large external diameter can be clamped, the fixture is stable in clamping and accurate in positioning, a speed reducer shell with step form can be machined, the machined shell is high in accuracy, and the like as mentioned in this paper.
Abstract: The utility model relates to a fixture, in particular to an internal gear shaping fixture. The internal gear shaping fixture comprises a base which is shaped like a Chinese character Tu and a positioning sleeve embedded in the center of the base, wherein a connecting rod is vertically connected to the shoulder of one end of the base through a nut; a pressure plate is arranged at the upper end of the connecting rod, and is connected with the connecting rod through a screw; at least one oil groove is formed in the upper and lower end faces of the base. The internal gear shaping fixture has the advantages that a shell with a large external diameter can be clamped, the fixture is stable in clamping and accurate in positioning, a speed reducer shell with a step form can be machined, the machined shell is high in accuracy, and the like.

Patent
01 Oct 2014
TL;DR: In this article, a new gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing was presented. But the tools were not used to teach the undercutting phenomenon and the modification correction method.
Abstract: The utility model discloses a new gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing. A large motor is fixed to a rack, the large motor drives a first clutch shaft, the first clutch shaft drives a second clutch shaft and a third clutch shaft, a small motor drives the third clutch shaft, the second clutch shaft drives a four-bar mechanism, the four-bar mechanism drives a shaping cutter shaft to move in a D-shape track, the third clutch shaft drives a hobbing cutter shaft and a worm gear reducer, the worm gear reducer drives a slip gear speed changer and the shaping cutter shaft, the slip gear speed changer drives a horizontal slip transmission device, the horizontal slip transmission device drives a blank shaft to move in a rotary manner, the blank shaft drives an axial feeding device to move in a linear manner in the vertical direction, and a radial feeding device drives the blank shaft to move in a linear manner in the horizontal direction. When students use the experiment instrument, principles of the cutting of gears with two methods can be visually compared and learned, and the undercutting phenomenon and the modification correction method can be learned and explored.

Patent
08 Jan 2014
TL;DR: In this paper, a gear shaping clamp consisting of a clamp body, a pull rod, a cone with a chute, and a clamping head arranged in the cone to tightly clamp a clamped workpiece is presented.
Abstract: The utility model relates to a gear shaping clamp of an internal spline of a shaft sleeve. The gear shaping clamp comprises a clamp body, a pull rod, a cone with a chute and a clamping head arranged in the cone to tightly clamp a clamped work-piece, wherein the cone body is fixedly connected to the clamp body; the pull rod is fixedly connected to the clamping head; the outer sidewall of the clamping head is provided with a sloping bench which matches with the chute in the cone; the contact surface of the clamping head and the clamped work-piece is provided with an elastic transitional sleeve. The positioning standard and the technology standard are unified, and an upper standard outer diameter and a lower standard tip hole are used as the public standards for positioning, so that the clamping precision is high, a support point and a cutting point are basically located in the same section and have great support rigidity, the structure is compact, and the efficiency is high; the distance from the clamping position to the gear shaping position is reduced through the elastic transitional sleeve, a knife vibration phenomenon is avoided, and further the machining quality is guaranteed.

Patent
19 Feb 2014
TL;DR: In this paper, a motor gear shaping stator is characterized in which each stator tooth of a silicon steel sheet stator was provided with an tooth inserting groove, each tooth inserting hole was provided by a T-shaped head with a circular-arc-shaped face and each insertion tooth was inserted into a corresponding tooth inserting slot.
Abstract: The invention relates to a motor gear shaping stator. The motor gear shaping stator is characterized in that each stator tooth of a silicon steel sheet stator is provided with an tooth inserting groove, each tooth inserting groove is provided with an insertion tooth of a silicon steel sheet, each insertion tooth is provided with a T-shaped head with a circular-arc-shaped face and is inserted into a corresponding tooth inserting groove, the T-shaped head respectively seals open guide line grooves on the two sides, clearance exists between T-shaped heads of adjacent insertion teeth so as to form a notch, circular-arc-shaped faces of a plurality of T-shaped heads form an inner circle or outer circle structure of the stator. At assembling time, the silicon steel sheets are respectively stamped to form the stator sheets with tooth inserting grooves and insertion tooth sheets, the stator sheets and the insertion tooth sheets are respectively aligned and stacked to form the stator and insertion teeth, the stator and the insertion teeth are placed into formed windings one by one, and the stator can be formed as long as the insertion teeth are hit into the tooth inserting grooves. The motor gear shaping stator has the advantages of being exquisite in conception, reasonable in structure and simple in inserting coil technology. Especially, the stator guide line notch can be opened larger, automatic inserting coil of machines can be met, and the groove full rate is improved, subsequently, the insertion teeth are used for blocking open guide line grooves, so that the clearance between adjacent stator teeth is reduced, and the motor performance is improved.

Patent
04 Jun 2014
TL;DR: In this article, a gear shaping clamp for machining a shaft internal spline is presented, which has the advantages that the structure is simple, a workpiece is convenient and fast to replace, machining precision is high, and efficiency is high.
Abstract: The invention discloses a gear shaping clamp for machining a shaft internal spline. The external locating problem is solved. According to the technical scheme, a tire base (1) of the gear shaping clamp special for machining the shaft internal spline is connected with a machine tool workbench through a T-type bolt (12); locating gaskets (10) are fixed to the tire base (1) through internal hexagonal cylindrical head screws II (9), locating sleeves (5) are arranged outside the locating gaskets (10) in a sleeved mode and are fixed to the tire base (1) through internal hexagonal cylindrical head screws I (3), and two supporting columns (2) and two double-end bolts (4) are fixed to the tire base (1); two hook pressing plates (6) are arranged on the upper portions of the double-end bolts (4) in a sleeved mode; springs (7) are arranged on the lower portions of the hook pressing plates (6) on the double-end bolts (4) in a sleeved mode; guide grooves are formed in the hook pressing plates (6), and the supporting columns (2) are sleeved with the guide grooves of the hook pressing plates (6); the double-end bolts (4) penetrate through kidney-shaped holes in the hook pressing plates (6), and the hook pressing plates (6) can move front and back. The gear shaping clamp has the advantages that the structure is simple, a workpiece is convenient and fast to replace, machining precision is high, and efficiency is high.

Patent
02 Apr 2014
TL;DR: In this article, an orthogonal face gear grinding method based on a planar grinding wheel end face is described. But the method is not suitable for the orthogonality of the face gear.
Abstract: The invention discloses an orthogonal face gear grinding method based on a planar grinding wheel end face. The method comprises the step: by adopting a double-virtual small gear, grinding a face gear through a method of simulating a working gear face of a rack cutter by a working plane of a planar grinding wheel. During processing, the face gear swings around an Zf axle, and the planar grinding wheel rotates around a self axis Zs at a constant rotating speed Ws; simultaneously, the planar grinding wheel also swings around an axis Z3 of a gear shaping tool, a virtual straight gear A rotates around a self axis Z3 at a rotating speed W3, and a virtual straight gear B rotates around a self axis Z4 at a rotating speed W4. During rotating, an orthogonal face gear surface in contact with the gear surface of the planar grinding wheel is ground; as swinging by an angle, the planar grinding wheel reciprocates and feeds once along a radial line of the orthogonal face gear, and the face gear implements dividing movement to process a next gear groove after finishing a complex gear groove, so as to process the entire orthogonal face gear. The method disclosed by the invention is suitable for grinding the orthogonal face gear.

Journal Article
TL;DR: The proposed mechanism of face gear shaping is applied to develop the mathematical model of face gears and the loaded tooth contact characteristics are investigated by using the FEM (finite element method) to study the stick-slip trajectories of the surfaces.
Abstract: The proposed mechanism of face gear shaping is applied to develop the mathematical model of face gears. Based on the developed mathematical model of the face gear, computer graph of the face gear set is created. Then, the transmission errors of the face gear pairs under various assembly errors are investigated based on the constraints theory of six-degree-of-freedom rigid body motion. The assembly errors are finally obtained by applying the TCA (tooth contact analysis) method. Also, the developed computer simulation programs quantitatively evaluate the influence of assembly errors including offset and angular position errors on the position of contact path and TE (transmission error) in a complete mesh cycle. Besides, the loaded tooth contact characteristics are investigated by using the FEM (finite element method) to study the stick-slip trajectories of the surfaces. The results are illustrated with numerical examples.

Patent
22 Jan 2014
TL;DR: In this article, the authors proposed a method for performing analog computation on the whole depth of a gear after gear shaping, which comprises the steps that the reference circle tooth thickness Sn of the gear to be machined is calculated according to the formula: Sn = MnZv[sin{Pi/ (2Zv)+2Xntan(alphan)/ Zv}]; the reference diameter of a root circle after gear carving df = ZMn-2Y-2 Ho; if H+0.1 Mn>= Hg >=H, the design of the
Abstract: The invention discloses a method for performing analog computation on the whole depth of a gear after gear shaping. The method comprises the steps that the reference circle tooth thickness Sn of the gear to be machined is calculated according to the formula: Sn = MnZv[sin{Pi/ (2Zv)+2Xntan(alphan)/ Zv}]; the reference circle space width Sc of the gear to be machined is calculated according to the formula Sc = MnPi-Sn; the position Y where a slotting cutter is located when the cross-rod distance M is machined to meet the technological requirements in the gear shaping process of the slotting cutter is calculated according to the formula Y= (Sc-Sng)/tan (alphan); the whole depth of the gear after gear shaping is calculated according to the formula Hg = (da-df)/2, wherein the diameter of a root circle after gear shaping df = ZMn-2Y-2 Ho; if H+0.1 Mn>= Hg >=H, the design of the whole depth of the gear is qualified; if not, the design of the whole depth is disqualified, wherein H refers to the whole depth of the gear to be machined. The invention further discloses a device for performing analog computation on the whole depth of the gear after gear shaping.

Patent
09 Jul 2014
TL;DR: In this paper, a method for fabricating a high-speed rail train gear is described, which includes the following steps of (1) providing a forge piece for gear machining, (2) rough machining of the forge piece, (3) semi-finishing of the forged piece and (4) thermal treatment, and (5) finish machining.
Abstract: The invention discloses a method for fabricating a high-speed rail train gear. The method includes the following steps of (1) providing a forge piece for gear machining, (2) rough machining of the forge piece, (3) semi finish machining of the forge piece, (4) thermal treatment, and (5) finish machining, wherein the step (2) includes cutting and removing excessive allowance; the step (3) includes skiving by a turning tool, hobbing by a hobbing cutter and gear shaping by a slotting tool in sequence; the step (4) includes hardening and tempering, carburizing and quenching, and high-frequency induction quenching of teeth surfaces; the step (5) includes finishing benchmark and finish machining of teeth forms. Requirements of a high-speed rail train for pressure-bearing strength of the gear are high so that the bearing pressure of the gear is higher with increasing of speed.

Patent
15 Oct 2014
TL;DR: In this paper, the utility model relates to a numerical control gear shaping machine, which comprises a lathe bed, a work table, a stand column and a transmission case, and the operation panel corresponds to a tool rest on the side face of the stand column.
Abstract: The utility model relates to a numerical control gear shaping machine which comprises a lathe bed, a work table, a stand column and a transmission case. The work table and the transmission case are arranged on the lathe bed, the stand column is arranged at the upper end of the transmission case, an electric box and an operation panel are arranged on the stand column, and the operation panel corresponds to a tool rest on the side face of the stand column. The machine further comprises a main movement system, a tool relieving movement system, a radial feed movement system, a spindle rotating movement system, a work table rotating movement system and a spindle upper stop movement system. The numerical control gear shaping machine is simple in structure and reasonable in design, in the tool shaft return process, the upper stroke and the lower stroke are long, meanwhile, adjustability is achieved, cutting force is sufficient, the tool shaft rotation precision is high, and the stopping inertia is small.

Patent
01 Oct 2014
TL;DR: In this paper, a rotatable fork machine with a sliding trolley and a rotary frame is presented, where the rotary support is used for driving the rotaries to rotate at 360 degrees.
Abstract: The utility model discloses a reciprocating type rotatable fork machine which comprises a sliding trolley and a rotary frame, wherein the sliding trolley is fixed on the upper end of a bracket; the rotary frame is connected to the lower end of the sliding trolley; a gear shaping frame which can move up and down is connected with the rotary frame; a guide rail and a rack are arranged on the upper end of the bracket; the sliding trolley is driven to reciprocate on the guide rail by a driving device by virtue of the rack which is engaged with the driving device; a rotary support which is used for driving the rotary frame to rotate at 360 degrees is connected to the sliding trolley; the gear shaping frame on the rotary frame is driven to move up and down by a trapezoidal screw. After the rotary frame is driven to move to a proper position along the guide rail by the sliding trolley, the height position of the gear shaping frame is adjusted, so as to enable an object to be inserted, then the sliding trolley moves back to drive the rotary frame to move to a transporting position, and the rotary frame is adjusted to the proper direction in the moving process, so that the discharging is facilitated. The transportation of the whole object is automatically realized by equipment, the operation is smooth and accurate, only operators are needed, porters are not needed, the working efficiency is improved, and the labor cost is reduced.

Patent
29 Oct 2014
TL;DR: In this paper, a gear-shaping machine with a synchronous pulley is described, where the output shaft of a motor of the machine is provided with a pulley which drives a vertical shaft to rotate through synchronous belt and the top of the vertical shaft is connected with the rotating disc.
Abstract: The utility model relates to a gear-shaping machine, relates to the field of gear shaping, and solves the problems in the prior art that the efficiency is low and the cost is high. An output shaft of a motor of the machine is provided with a synchronous pulley which drives a vertical shaft to rotate through a synchronous belt. The top of the vertical shaft is connected with the rotating disc which is provided with a cam shaft. The cam shaft is rotatingly connected with a connecting rod which is connected with a tool apron advancing mechanism. The vertical shaft drives a transmission shaft to move through an alternating axis bevel wheel, and the transmission shaft drives an indexing mechanism to move, thereby driving a main shaft to rotate. All the operations of the machine provided by the utility model are completed through mechanical transmission, and no complex electrical control is needed, thereby greatly improving the reliability and speed of equipment, and improving work efficiency, and reducing the cost.

Patent
04 Jun 2014
TL;DR: In this paper, the utility model discloses a tool rest sliding guide device of a gear shaping machine, which comprises a guide rail seat cover provided with a through hole, a slide guide rail, a fixed guide rail and a fit strip.
Abstract: The utility model discloses a tool rest sliding guide device of a gear shaping machine. The tool rest sliding guide device comprises a guide rail seat cover provided with a through hole, a slide guide rail, a fixed guide rail and a fit strip, wherein the slide guide rail is glidingly matched in the through hole of the guide rail seat cover; a shaft hole for mounting a gear shaper cutter spindle is formed in the slide guide rail and is formed in the axial direction of the slide guide rail; a spiral guide groove provided with a spiral surface is formed in the circumference surface of the slide guide rail; the fixed guide rail and the fit strip are fixedly connected with the guide rail seat cover, and fill up and are matched in the spiral guide groove of the slide guide rail; and the surfaces, facing the spiral surface of the slide guide rail, of the fixed guide rail and the fit strip are spiral surfaces; and the spiral surfaces on the fixed guide rail and the fit strip are mutually matched with the spiral surface on the slide guide rail. According to the tool rest sliding device of the gear shaping machine, an original straight guide rail is changed into the spiral guide rail, and a machining process of a spiral gear can be completed.

Patent
17 Dec 2014
TL;DR: An annular gear ring gear shaping tool comprises a base and multiple clamping mechanisms as discussed by the authors, which can be used to quickly position and clamp a gear ring, and besides, the tool can meet the clamping requirement the gear ring with the inner hole diameter in a certain range.
Abstract: An annular gear ring gear shaping tool comprises a base and multiple clamping mechanisms. The middle of the base is provided with a through hole, multiple T-type sliding grooves are distributed with the through hole as the center, the number of the T-type sliding grooves is the same as that of the clamping mechanisms, each clamping mechanism is arranged in one corresponding T-type sliding groove and can slide in the corresponding T-type sliding groove at will, each clamping mechanism comprises a sliding base, fixing screws, a pressing plate and pressing screws, the sliding bases are arranged in the T-type sliding grooves of the base, the fixing screws are screwed in the middles of the upper surfaces of the sliding bases, and the pressing plates are installed at the ends of the sliding bases through the pressing screws. The tool has the advantages that by means of the structure, a gear ring can be quickly positioned and clamped, and besides, the tool can meet the clamping requirement the gear ring with the inner hole diameter in a certain range.

Patent
02 Apr 2014
TL;DR: In this article, a gear shaping clamp adopts an inner hole expansion structure to ensure the positioning precision of a workpiece and ensure that the expansion amount is within the elastic deformation range of the workpiece so that the condition that the inner hole is expanded and does not return to the original size is satisfied.
Abstract: The utility model relates to a gear shaping clamp adopting an inner hole expansion structure The gear shaping clamp comprises a workpiece, an upper positioning seat, a lower positioning seat and a connecting shaft, wherein the connecting shaft is fixedly connected with a pull rod penetrating through the upper positioning seat upwards; a quick-change pressure plate is sleeved at the periphery of the top of the pull rod; a protruding structure is arranged at the top of the pull rod, and is buckled with the quick-change pressure plate; a positioning shaft and a steel ball retainer are arranged in the upper positioning seat; the positioning shaft is sleeved outside the pull rod; the steel ball retainer is sleeved outside the positioning shaft; the bottom of the positioning shaft and the bottom of the steel ball retainer are fixedly connected together through inner hexagon screws; steel balls are mounted close to the top of the steel ball retainer; the workpiece is positioned between the upper positioning seat and the quick-change pressure plate, and is sleeved outside the steel balls of the steel ball retainer The gear shaping clamp can not only ensure the positioning precision of the workpiece, but also ensure that the expansion amount is in the elastic deformation range of the workpiece, so that the condition that the inner hole is expanded and does not return to the original size; meanwhile, as the magnitude of interference is small, a worker can place the workpiece easily, and the actual operation is facilitated

Patent
02 Apr 2014
TL;DR: In this paper, a quick tool setting instrument for gear machining is described, where the gear tooth positions of a machined gear are determined through the method that two steel balls are made to make complete contact with two toothed grooves respectively, then locating is conducted on a gear to enable a gear shaping tool to be completely meshed with the gear to be machined, and secondary tool setting is realized.
Abstract: Disclosed is a quick tool setting instrument for gear machining The quick tool setting instrument for gear machining comprises a lower seat body (1), an upper seat body (2), a first cantilever (4), a second cantilever (5), a fine adjustment mechanism (7) and an adjustment mechanism (10) The second cantilever (5) and the first cantilever (4) are sequentially connected to the upper seat body (2), the second cantilever (5) is fixed to the upper seat body (2) through a pressing block (6) and a pressing plate (8), on end of the second cantilever (5) is connected with a rotary shaft of the first cantilever (4), the other end of the second cantilever (5) is provided with the fine adjustment mechanism (7) and the front end of the first cantilever (4) is provided with the rotatable adjustment mechanism (10) The quick tool setting instrument for gear machining has the advantages that the gear tooth positions of a machined gear are determined through the method that two steel balls are made to make complete contact with two toothed grooves respectively, then locating is conducted on a gear to be machined to enable a gear shaping tool to be completely meshed with the gear to be machined, and secondary tool setting is realized The structure is simple, the working efficiency is greatly improved and popularization and application are easy

Patent
07 May 2014
TL;DR: The tool changing mechanism of a gear shaping machine as discussed by the authors replaces a traditional screw locking mode into an elastic deforming force locking mode of the Belleville spring, overcomes the shortcoming of a tool rest indexing worm gear pair.
Abstract: Disclosed is a tool changing mechanism of a gear shaping machine The tool changing mechanism of a gear shaping machine comprises a tool rest body, the inside of the tool rest body is provided with a tool shaft, and the inside of the tool shaft is provided with an oil cavity; an oil cavity inlet at the top end of the tool shaft is provided with a ball joint drawbar and provides high-pressure oil through the ball joint drawbar; the bottom end of the tool shaft is arranged inside the oil cavity and provided with a tool retracting mechanism, the tool retracting mechanism comprises a piston rod, a spring is sleeved outside the lower portion of the piston rod, and the bottom end of the piston rod is provided with a catch jaw; a tool changing seat is arranged under the spring, the inside of the tool changing seat is provided with a pop rivet, the upper end of the pop rivet is matched with the catch jaw, the low end of the pop rivet is connected with a tool bar, and the lower portion of the tool bar is fixedly provided with a tool The tool changing mechanism of the gear shaping machine replaces a traditional screw locking mode into an elastic deforming force locking mode of the Belleville spring, overcomes the shortcoming that the action force of a tool rest indexing worm gear pair is required during tool assembly of an existing gear shaping machine tool to result in damage to the precision of the tool rest indexing worm gear pair, reduces the machine tool operating difficulty and the operating time and is convenient to operate, simple in structure, wide in application range and particularly applicable to a small or medium size numerical control machine tool

Patent
21 May 2014
TL;DR: In this paper, a spiral gear machining device is described, which comprises an upper die base (7), an upper hitting rod (9), a lower die fixing base (8), and a lower ejection rod (10).
Abstract: The utility model relates to the technical field of gear cold forging, and discloses a spiral gear machining device. The spiral gear machining device comprises an upper die base (7), an upper hitting rod (9), a lower die fixing base (8) and a lower ejection rod (10), and further comprises a spiral gear die (1), a lower die (2) and a square die (3). The spiral gear die (1), the lower die (2) and the square die (3) are sequentially arranged from top to bottom, an upper die mat (6) is arranged adjacent to the upper die base (7), a cylindrical roller thrust bearing (13) is arranged between the upper die mat (6) and the spiral gear die (1), a hitting rod (12) is arranged above the upper hitting rod (9), the lower die (2) and the square die (3) are provided with a lower die sleeve (4), a lower die mat (5) is arranged below the lower die sleeve (4), and an ejection rod (11) is arranged below the lower ejection rod (10). The spiral gear machining device has the advantages of being rapid in die replacement and high in locating accuracy, spiral gear shaping and square shaping can be achieved at the same time, the product quality is stable, the production efficiency and the material using rate are high, and the defects that in the prior art, the mechanical machining is low in material using rate and production efficiency, unstable in product quality and high in production cost are overcome.

Patent
03 Dec 2014
TL;DR: In this paper, a numerical control gear shaping machine demonstration instrument is presented, which is capable of drawing a standard gear and a profile shifted gear and comparing similarities and differences of the two gears, also being capable of demonstrating an undercutting phenomenon.
Abstract: The invention provides a novel numerical control gear shaping machine demonstration instrument and a demonstration method thereof. The demonstration instrument comprises a frame, a gear printing mechanism and a horizontal feeding mechanism. The demonstration instrument finishes demonstration under a combined action of horizontal feeding movement of ground paper on the horizontal feeding mechanism, enveloping movement of a gear shaper cutter and the ground paper and up-and-down movement of the gear shaper cutter in the gear printing mechanism. The novel numerical control gear shaping machine demonstration instrument can change the center distance between two shafts, the number of teeth to be drawn, the drawing speed and the like through changing parameters at a PC end, thereby being capable of drawing a standard gear and a profile shifted gear and comparing similarities and differences of the two gears, also being capable of demonstrating an undercutting phenomenon. The novel numerical control gear shaping machine demonstration instrument is reasonable in overall arrangement of mechanisms, small in overall size, safe, reliable, and suitable for carrying out demonstration for students in an experiment course.