The utility model relates to a clamp used for clamping a workpiece with an inner spline hole. The clamp comprises a shaft part, a cover plate, a swelling sleeve and a first nut, wherein the swelling sleeve is an open sleeve where a notch is formed, an inner hole of the sleeve is a conical hole, a positioning step face is arranged on the shaft part, the shaft part is sleeved with the workpiece and the cover plate sequentially in a penetrating mode, the workpiece is axially positioned due to the fact that the two ends of the workpiece abut against the cover plate and the positioning step respectively, the portion, corresponding to the inner spline hole of the workpiece, of the shaft part is provided with a conical face corresponding to the tamper of the conical hole, the swelling sleeve is connected to the conical face of the shaft part in a sleeved mode through the conical hole, and the first nut is connected to one end of the swelling sleeve in a screwed mode to position the workpiece in the radial direction. The clamp has the advantages that the workpiece is positioned in the radial direction through the swelling sleeve with the conical hole, the gap between the shaft part and the workpiece to be machined is eliminated, the shaft part and the workpiece can be coaxial, no gap exists between the shaft part and the workpiece, the workpiece is easily clamped through the cover plate and the positioning step face to be axially positioned, the clamp is easy and convenient to operate and high in effect, and the overall machining accuracy is improved.

Clamp used for clamping workpiece with internal spline hole

Process for machining marine gear

Workpiece processing tool

The invention discloses a multipurpose clamp for manufacturing an engine transmission shaft. The multipurpose clamp comprises a positioning clamp (2), a pressing plate (3), a Mohs cone connecting block (4), a first lock screw (5) and a second lock screw (6). The end, with an opening type horn hole structure, of a machined part (1) is put into a positioning groove body of the positioning clamp (2), one end of the Mohs cone connecting block (4) is fixedly connected with the positioning clamp (2) through the first lock screw (5), and the part, with a cone, of the Mohs cone connecting block (4) can be directly installed on a main shaft of an outer spline milling machine tool with a Mohs inner cone, and a main shaft of a numerical control outer circle grinding machine. The second lock screw (6) is used for arranging the part (1) into the positioning clamp (2) and then pressing the pressing plate (3), and the pressing plate (3) can press the part (1). According to the multipurpose clamp for manufacturing the engine transmission shaft, the machining quality of the shaft type part products can be improved, the qualification rate required technically can be increased, and the accuracy of machining sizes can be improved; and the one-time presenting qualification rate of the parts is ensured, time and labor are saved, and the work efficiency is improved.

Multipurpose clamp for manufacturing engine transmission shaft

The invention relates to a clamp for processing a rectangular-opening plastic sealing ring and a processing method thereof. The clamp is characterized in that a special clamp is designed according to the processed rectangular-opening plastic sealing ring, a cutter ensuring that the thickness size of an edge part is less than 0.2mm is adopted, proper bench-drill rotating speed and processed-product feeding speed are selected and the purpose of processing an opening of the sealing ring is reached. A dovetail sliding groove is arranged on a guide rail, and the bottom part of a base is matched with the sliding groove on the guide rail and is embedded in the sliding groove; the base 4 is fixedly connected with a core shaft, a pressing block and a nut. The clamp has the beneficial effect that by the product processed by the method, the requirement of a drawing can be met.

Clamp for processing rectangular-opening plastic sealing ring and processing method thereof

The utility model discloses a three-level transmission reducer of a planet gear, which comprises three levels of reducing mechanisms, an input shaft and an output shaft. Each level of the reducing mechanisms consists of a sun gear, a planet gear, a planet carrier and an annular gear. The three-level transmission reducer of the planet gear is characterized in that the sun gear consists of a gear and a support body. The support body is disposed on one end face of the gear and designed to be integrated with the gear, inserting connection grooves are arranged on the input shaft and one end face of the planet carrier, and the support body on the sun gear of a first-level reducing mechanism is inserted in the inserting connection groove of the input shaft. The support bodies on the sun gears of a second-level reducing mechanism and a third-level reducing mechanism are sequentially inserted in the inserting connection grooves on the planet carriers of the first-level reducing mechanism and the second-level reducing mechanism, and the input shaft is inserted in the inserting connection groove on the planet carrier of the third-level reducing mechanism. Due to the transmission structure, the three-level transmission reducer of the planet gear has the advantages of not only being stable in motion, high in resistance to impact and vibration and stable in working performance, but also being convenient in dismounting and maintaining.

Three-level transmission reducer of planet gear

The utility model discloses a novel high-precision fixture for grinding a splined hole gear. The fixture comprises a core shaft, a spline gear and an expansion sleeve, wherein the expansion sleeve is a housing with a tapered interior; the exterior of the core shaft is tapered; the expansion sleeve is in accordance with the core shaft in taper proportion; the spline gear is fixed on the core shaft; and the expansion sleeve is sleeved on the core shaft and pressed into a gear hole of the spline gear. The fixture adopts a tapered expansion sleeve type core rod, overcomes defects in pore diameter, and can effective ensures the factors required in gear processing, such as the radial runout of a gear ring, profile tolerance of gear teeth, tooth alignment tolerance and the like.

Novel high-precision fixture for grinding splined hole gear

The utility model relates to a taper hole key groove pulling clamp. The clamp comprises a key groove pulling clamp, a guide shaft and a gear; an inclined guide hole is formed in the key groove pulling clamp; one end of the guide shaft is a circular shaft, and the other end of the guide shaft is a tapered shaft; a mounting hole is formed on the gear; and the key groove pulling clamp is connected with the gear through the guide shaft in a detachable and matched manner. The circular shaft of the guide shaft is inserted into the guide hole, and the tapered shaft is inserted into the mounting hole. The original taper hole angle is converted to the inclination of the positioning end surface of the guide shaft, so that the original inclined taper hole pulling is changed into the straight taper hole pulling, which can achieve the purpose of taper hole inclined key groove pulling; compared with the traditional gear shaping technique, the tool processing technique provided by the utility model is universal for gears with the same taper, so as to save raw materials for producing various tools and cost; and the speed of key groove pulling is higher than the speed of key groove slotting, so as to improve the production efficiency.

Taper hole key groove pulling clamp

The utility model discloses a single-sided shifting disc milling claw tool for a dune buggy, comprising a positioning core shaft, a clamp main body, a workpiece, a positioning block, a lock nut and a milling claw The positioning block is welded on the upper side surface of the clamp main body, the clamp main body is fixed on the positioning core shaft, the milling claw is installed on a positioning excircle of the positioning core shaft, the workpiece is positioned by the positioning block, and the workpiece is locked by the lock nut arranged on the side surface of the clamp main body In the utility model, the More taper is adopted for automatic centering, the side surface of the tool is propped by screws, a cutter on the side surface of the milling claw is two-in-one, so that the yield is improved greatly, the quality is quite stable, and simultaneously, the business skill requirement on an operator is reduced greatly

Single-sided shifting disc milling claw tool for dune buggy

The invention discloses a processing technique of an oil pump gear and an extruding knife used thereby. The processing technique is characterized by comprising the following steps: after a gear-hobbing working step is finished, changing the original hole grinding into hole extruding, using the extruding knife on a hole extruding machine to carry out hole extruding on a gear; and entering a gear-shaving working step after the processing of a central hole of the gear is finished. The extruding knife has a cylindrical structure and is composed of a clamping section, an edge section and a hole-extruding pretreatment section, wherein one end part of the hole-extruding pretreatment section is provided with a chamfer; and the edge section is composed of a left part and a right part, the included angle between the two parts is 150 degrees, and the outer surface of each part is arc-shaped. On the premise of meeting the dimensional tolerance of the inner holes, the invention ensures that the processing technique is convenient and efficient; as the extruding knife has 55-60 HRC hardness, the service life of the extruding knife is prolonged, and the cost is saved further; due to little material loss, the material utilization ratio of the extruding knife is improved by 30%; and as the extruding knife can finish the operation in one step, the coaxiality of the inner holes is within phi 0.002, the roughness is less than or equal to 0.8, and the runout of a gear ring is less than or equal to 0.02.

Qiliang Wang

Papers

Three-level transmission reducer of planet gear

Novel high-precision fixture for grinding splined hole gear

Taper hole key groove pulling clamp

Single-sided shifting disc milling claw tool for dune buggy

Processing technique of oil pump gear and extruding knife used thereby