The invention discloses a method for detecting the linkage accuracy of a C-shaft of a multi-shaft linkage double-pendulum numerical control milling machine. The method comprises the following steps that a standard linkage ball is installed on a machine tool spindle, and the working length L and the linkage ball diameter D of the standard linkage ball are set in a machine tool system; a digital display dial indicator used for data collection and data output is arranged on a machine tool bed frame, and after a measuring head of the digital display dial indicator makes contact with the standard linkage ball, the measuring head is pressed inward by a certain distance d, and the current position of the digital display dial indicator is reset to zero; a machine tool RTCP motion mode is switched on, and the C-shaft is made to rotate around the center of the standard linkage ball; the digital display dial indicator is used for collecting displacement deviation delta 1 generated between the standard linkage ball and the measuring head in the rotation process, and the value of the displacement deviation delta 1 at a certain rotation angle is the linkage accuracy of the C-shaft at the angle. The method for detecting the linkage accuracy of the C-shaft of the multi-shaft linkage double-pendulum numerical control milling machine is more rapid and effective in data collection and data analysis, and can serve as a basis for accuracy compensation of a C-shaft of a follow-up machine tool; a large number of trial cuts does not need to be conducted, a three-coordinate measuring instrument does not need to be arranged for special inspection, and therefore cost is low and efficiency is high.

Method for detecting linkage accuracy of C-shaft of multi-shaft linkage double-pendulum numerical control milling machine

The invention relates to a support for a rotary radial drilling fixture for disc parts. The support comprises a base, two lifting linear actuators, a U-shaped bracket, two rib plates, two telescopic linear actuators, two plummer blocks and two runners. Grounding holes are arranged in the base evenly, the lifting linear actuators are symmetrically mounted along the longitudinal central axis of the base, the top end of each lifting linear actuator is connected with the bottom end of the U-shaped bracket, the rib plates are located on the left and right sides of the U-shaped bracket respectively, the bottom ends of the telescopic linear actuators are fixed on the left and right side walls of the U-shaped bracket through the plummer blocks respectively, the telescopic linear actuators are symmetrically mounted in a horizontal straight line, and the runners are mounted on the telescopic linear actuators respectively. Positions of radial drilling of the disc parts can be adjusted by rotating the runners, continuity of radial drilling of the disc parts can be ensured. The support has vertical height adjustment and horizontal length adjustment functions, and is convenient to use.

Support for rotary radial drilling fixture for disc parts

The invention discloses an accurate and rapid detection method used for measurement of a gauge (a serrated gauge) special for a cross-rod distance value M existing in a spline ring gauge. In other words, a special gauge rod (a rolling rod) is adopted for the cross-rod distance value M on a special internal tooth gauge or an internal gear part (which are called by a joint name of 'workpiece') to be tangent to the tooth socket of the workpiece and to be in zero clearance sliding fit with corresponding combined gauge blocks or a special conical core rod used when the value M is smaller than or equal to 20 mm.

Method for precisely measuring cross-rod distance value M of spline ring gauge

The invention discloses a processing device of an internal keyway of a tapered hole of a large workpiece. The processing device comprises a guide rod, a broach sheet, rack guide rails, a fixture body, a locating pin, a locating rod, a worktop, a feed workbench, a coupling mechanism, a worm and gear, a hydraulic cylinder, a machine tool body, a hand feed device, a broach rod, a primary motion hydraulic cylinder, a fixing device and a bearing pedestal, wherein one end of the worktop used for placing and locating the workpiece is connected with the machine tool body by a fixed hinged support, and the upper end of the hydraulic cylinder is articulated with the other end of the worktop. The processing device can process the internal keyway of the tapered hole of the large workpiece, is simple in structure, convenient to mount and high in practicability, and has the characteristics that a small mechanism can process the large workpiece and the processing precision is high; and parts and components are high in standardization degree and universalization degree.

Processing device of internal keyway of tapered hole of large workpiece

The invention provides an expansion clamping device which comprises an expansion sleeve and a chuck connected to one end of the expansion sleeve, wherein a plurality of expansion gaps are axially formed in the expansion sleeve; a core rod is mounted in the expansion sleeve; the side surface of the core rod is conical; the inner wall of the expansion sleeve is a conical surface matched with the core rod; the small-diameter end of the core rod faces to the chuck; a bolt penetrates through the chuck to be in threaded connection with the small-diameter end of the core rod to tightly pull the core rod and the expansion sleeve; chuck teeth are arranged on the chuck. According to the expansion clamping device, a bottom barrel can be quickly tightened by expansion and dismounted, and the chuck is matched with a processing tool of the bottom barrel through the chuck teeth, so that the bottom barrel can be firmly fixed and prevented from rotating during processing; an expansion mechanism is convenient to mount and dismount, the bottom barrel cannot be damaged, and the clamping efficiency is high.

Expansion clamping device

The utility model discloses a device for measuring the cross rod distance, which comprises at least one standard measuring bar, at least one pair of measuring bars and a dial gauge, wherein the inner sides of the pair of measuring bars are provided with the same ball heads, and ball centers of the two ball heads are located at the same straight line as a contact pin of the dial gauge; the contact pin is contacted with the outer side of one measuring bar, and the measuring bar can move in the direction where the contact pin is located; zero setting is carried out on the dial gauge when the ball heads of the pair of measuring bars are abutted against two ends of the standard bar; two opposite tooth slots of an external gear of an external spline to be measured are placed between two balls, the measuring bar at one side of the dial gauge moves, and a degree is acquired when the contact pin stabilizes. The cross rod distance of the external gear or the external spline equals the length of the standard measuring bar pluses the reading number of the dial gauge and pluses the diameter of the two ball heads. Compared with the prior art, the measuring process is simple; and the standard measuring bar and the diameter of the ball heads are standard values, the cross rod distance is the sum of the standard values and the reading number of the dial gauge, and the error is small, thereby having high measurement precision.

Device for measuring cross rod distance

The invention discloses an inner-cone spline broaching machine tool, which comprises a base, a broaching tool, a sliding plate, a cutter relieving cylinder assembly, a working device and a driving device. The base is arranged on a machine tool body and is provided with a guiding seat thereon; one end of the broaching tool extends into the machine tool body, and the broaching tool is connected with a stretching cylinder in the machine tool body and can be vertically and slidably arranged on the guiding seat; the sliding plate is sleeved on the guiding seat and is slidably arranged on the base;the cutter relieving cylinder assembly is arranged on the base, and an extending end of the cutter relieving cylinder assembly is connected with the sliding plate; the working device is arranged on the sliding plate and is used for fixing inner-cone splines; and the driving device is arranged on the sliding plate and is used for driving the working device to rotate one indexing unit each time. According to the inner-cone spline broaching machine tool disclosed by the invention, the inner-cone splines are machined by a broaching tool in a broaching manner, the precision by adopting the broaching tool is higher than the precision by adopting gear planning, and the efficiency by adopting the broaching tool is higher the efficiency by adopting the gear shaping and the gear planning; the working device carries out operations, such as automatic indexing, automatic broaching tool feeding, retracting and the like, by the driving device, thus the indexing operation is uniform and reliable, andthe degree of automation is high; and the inner-cone spline broaching machine tool disclosed by the invention is convenient to be detached, and can carry out multiple specifications of inner-cone spline operations by replacing the working device.

Inner-cone spline broaching machine tool

Tool changing device for vertical broaching machine

The utility model relates to a high-precision clamp for processing a shaft gear. The clamp is connected with a machine table through T-shaped bolts; a positioning sleeve is connected with a base through bolts; a worm is mounted on the base; the axis of the worm and the axis of the base are vertical lines in different planes; in the manner of rotating a deep groove ball bearing around the axis of a worm gear, the worm gear is mounted on the base, the axis of the worm gear is superposed with the axis of the base, and the two ends of the worm gear are fixed by the deep groove ball bearing and a tapered roller bearing; the worm gear is driven to rotate around the axis under the rotating action of the worm; nuts are in matching connection with the worm gear through the bolts; a screw rod which is engaged with the worm is driven to move up and down under the rotating action of the worm; the screw rod is connected with a spring chuck through a connecting sleeve and is used for driving the spring chuck to move up and down; and when the spring chuck is deformed or restored, a workpiece is tightened or released. The high-precision clamp for processing the shaft gear has the beneficial effects of accurate positioning, reliable clamping, convenience and fastness in operation, time-saving and labor-saving property, and capability of increasing the precision of processing a gear shaft.

High-precision clamp for processing shaft gear

A double-end grinding wheel chamfering machine for a straight tooth disc gear is provided with a base, a rotating table is arranged in the middle of the base, a positioning mould is mounted on the rotating table, the positioning mould is connected with a replaceable positioning plate, a pressure plate for pressing a workpiece is arranged at the upper part of the positioning plate, upright posts respectively positioned on two sides of the rotating table are arranged on the base, a bidirectional adjusting mechanism is arranged on the upright posts, a grinder is hung on the bidirectional adjusting mechanism, a dust collection pipe is arranged on the bidirectional adjusting mechanism, and the mouth of the dust collection pipe is positioned at the lower end of the grinder. Since two grinding wheels are adopted to chamfer two ends at the same time, the work efficiency is greatly improved. Since a dust removing device is adopted to absorb dust, the environmental cleanliness is improved.

Li Taotao

Papers

Device for measuring cross rod distance

Inner-cone spline broaching machine tool

Tool changing device for vertical broaching machine

High-precision clamp for processing shaft gear

Double-end grinding wheel chamfering machine for straight tooth disc gear