A multi-gear hole grinding clamp and equipment

Abstract

The present application relates to the technical field of gear hole grinding, and specifically discloses a multi-connection gear hole grinding clamp and equipment, which comprises a clamping assembly corresponding to each jaw, the clamping assembly comprises a positioning block, a clamping block and a top block, the positioning block is arranged on the side of the jaw close to the multi-connection gear, the plurality of positioning blocks move towards the multi-connection gear simultaneously with the jaw, the positioning block is provided with a mounting groove, the clamping block is arranged in the middle of the mounting groove, the clamping block is telescopic perpendicular to the bottom surface of the mounting groove, and the two top blocks are arranged on the left and right sides of the clamping block respectively; when the clamping block is abutted against the shaft of the multi-connection gear, the two top blocks are abutted against the side walls of the left and right gears; the multi-connection gear hole grinding clamp and equipment of the present application, in the clamping process, when the clamping block is abutted against the shaft of the multi-connection gear, the top block is abutted against the side walls of the gears on the left and right sides of the top block under the action of the clamping block and the positioning block, and the coaxiality of the shaft of the multi-connection gear and the axis of the three-jaw chuck is further adjusted by using the top block.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear hole grinding, and in particular to a multi-gear hole grinding clamp and equipment. BACKGROUND

[0002] In the field of mechanical manufacturing, multi-gear is widely used in the transmission system of automobile, machine tool, engineering machinery and other equipment because it can realize multi-speed ratio transmission. The machining quality, especially the grinding accuracy of the inner hole, directly affects the assembly accuracy, transmission stability and service life of the gear.

[0003] At present, in the multi-gear inner hole grinding process, the adaptability of the clamp and the equipment is the key factor restricting the improvement of the accuracy. The traditional clamp adopts single-end positioning or rigid clamping mode, which has the following disadvantages: first, the positioning reference and the gear working reference do not coincide, which is easy to cause the coaxiality and perpendicularity difference between the inner hole and the gear outer circle and end face due to the reference conversion error; second, the clamping force is unevenly distributed, and the thin-walled structure of the multi-gear is easy to produce clamping deformation, and the stress release after grinding will cause size springback, affecting the accuracy stability; third, the clamping efficiency is low, and special clamps need to be replaced for multi-gears with different number of teeth and modulus, which takes time to adjust and is difficult to meet the batch production demand.

[0004] The Chinese patent application file with publication number CN108481195A discloses a gear fixing device, which comprises a circular chuck and a clamping piece for fixing the gear. A groove is formed on one side of the chuck along the diameter, and a central shaft is installed on the other side. The clamping piece comprises a gear shaft, a sleeve and an expansion member. The gear shaft is provided with a boss at one end and is slidably installed in the groove at the other end. The gear shaft is detachably connected with the chuck. A plurality of through grooves are formed in the boss along the circumference. The expansion member is slidably installed in the through grooves. The sleeve is sleeved on the gear shaft, and the sleeve is threadedly connected with the expansion member through the end face.

[0005] In the related prior art, when grinding the inner hole of the multi-gear, the outer side of the multi-gear tooth is usually clamped and fixed by using a three-jaw chuck. After clamping by the three-jaw chuck, the inner hole grinding device grinds the inner side of the hole. During grinding, the grinding device contacts one side of the inner hole, and the grinding position is changed by rotation. Since the clamping position is the tooth of the multi-gear, the clamping points are relatively few, and the multi-gear is easy to rotate or deviate during clamping. In the initial clamping, the axis of the multi-gear is often different from the machining axis. When the diameters of the gears are different, the adaptability of the three-jaw chuck is poor. SUMMARY

[0006] The application provides a multi-gear inner hole grinding clamp and equipment, and aims to solve the problems in the prior art that after clamping is completed by using a three-jaw chuck, an inner hole grinding device grinds the inner side of the hole, the grinding device contacts one side of the inner hole during grinding, the grinding position is changed by rotating, the clamping position is the gear of the multi-gear, so that the clamping points are relatively few, and rotation or deflection is prone to occur during clamping, the axis of the multi-gear is not coaxial with the processing axis during initial clamping, and the three-jaw chuck has poor adaptability when the diameters of the gears are different.

[0007] The application provides a multi-gear inner hole grinding clamp and equipment, and aims to solve the problems in the prior art that after clamping is completed by using a three-jaw chuck, an inner hole grinding device grinds the inner side of the hole, the grinding device contacts one side of the inner hole during grinding, the grinding position is changed by rotating, the clamping position is the gear of the multi-gear, so that the clamping points are relatively few, and rotation or deflection is prone to occur during clamping, the axis of the multi-gear is not coaxial with the processing axis during initial clamping, and the three-jaw chuck has poor adaptability when the diameters of the gears are different.

[0008] During clamping, the plurality of clamping claws are synchronously close to the multi-gear shaft, the plurality of clamping blocks simultaneously clamp the multi-gear shaft, the multi-gear is coaxial with the base, the two top blocks are away from each other and abut against the side surface of the gear, and the limiting column clamps the gear teeth.

[0009] The effect is that the clamping assembly including the positioning block, the clamping block and the top block is arranged, the clamping block moves along the direction perpendicular to the base axis, the multi-gear is simultaneously clamped by the plurality of clamping blocks, the clamping of the multi-gear shaft is realized, the multi-gear is coaxial with the base, the stress on one side of the inner hole does not deviate during processing of the inner hole of the multi-gear, the top block contacts the clamping block through the inclined surface, the top block slides in the left-right direction during movement of the clamping block, and the limiting column on the top block is close to the gear teeth and clamps the gear teeth. The two top blocks are away from each other, the top blocks abut against the side surfaces of the gear arranged on the two sides, the position of the gear is limited, the contact area is increased, the rotation of the gear is limited, the stability of clamping is further improved through cooperation of the limiting column and the gear teeth, and vibration and errors in the processing process are reduced.

[0010] Preferably, the limiting column is provided with a plurality of side surfaces of the top block, when clamping, the plurality of limiting columns are located at the outermost end, and the limiting column is located outside the gear on the gear projection surface, and the effect is that: by setting a plurality of limiting columns, the number of clamping points is increased, so that the clamp can better adapt to the multi-connected gear with different number of teeth and module, and the versatility of the clamp is improved. At the same time, the outermost limit position of the limiting column is located outside the gear, which can make the limiting column limit the gear when limiting the gear, and the limiting column can also prevent interference while not affecting the normal work of other limiting columns.

[0011] Preferably, the top block is provided with a plurality of guide grooves on the side surface, and a plurality of limiting columns are respectively and slidingly arranged in the guide grooves. A guide column is arranged in the guide groove along the length, the limiting column is arranged on the guide column, and a spring is arranged on the guide column. In the initial state, the spring makes the limiting column located at one end of the guide groove close to the axis of the base. The effect is that: the design of the guide groove and the guide column ensures that the limiting column always remains stable during sliding, avoiding the failure of the limiting function of the limiting column due to tilting or jamming. The action of the spring makes the limiting column automatically reset in the unclamped state, simplifying the operation process, and providing a certain elastic force during clamping, so that the gear limiting column will not be jammed due to friction when it is inserted into the gear gap.

[0012] Preferably, the positioning block is slidingly arranged on the claw, and a limiting bolt is arranged on the claw. After the left and right adjustment of the positioning block is completed, the positioning block is locked by the limiting bolt. The effect is that: the sliding design of the positioning block enables it to be flexibly adjusted according to the size of the multi-connected gear, meeting the clamping requirements of gears of different specifications, and the setting of the limiting bolt ensures that the positioning block is firmly fixed after adjustment, avoiding displacement during processing.

[0013] Preferably, an installation hole is arranged in the installation groove of the positioning block, and the installation hole is perpendicular to the axis of the base. An installation rod is arranged at the end of the clamping block away from the axis of the base. The installation rod cooperates with the installation hole to make the clamping block move perpendicularly to the positioning block. The effect is that: the cooperation design of the installation hole and the installation rod ensures that the clamping block always maintains a direction perpendicular to the axis of the base during movement, avoiding the movement distance of the top blocks on both sides of the clamping block being different due to force deviation, which causes clamping failure. This structure design can also improve the movement stability of the clamping block.

[0014] Preferably, the bottom of the installation groove is provided with a sliding groove on both sides, and the sliding groove is arranged in the left and right directions. A plurality of guide wheels are arranged on both sides of the two top blocks. The guide wheels cooperate with the sliding groove to make the two top blocks approach or move away from each other. The effect is that: the design of the sliding groove and the guide wheel ensures that the top block runs stably during sliding, avoiding the jamming phenomenon caused by excessive friction. The rolling action of the guide wheel can also reduce wear and prolong the service life of the clamp.

[0015] Preferably, the two top blocks are provided with elastic expansion members at the end close to each other, and in the initial state, the elastic expansion members are in the original length, and the elastic expansion members minimize the distance between the two top blocks, and the effect is that the initial state of the elastic expansion members ensures that the top blocks are automatically reset when not clamped, so that the distance between the two top blocks is in the shortest state, and the clamping block is in the initial position, so that the clamping process is more stable.

[0016] Preferably, the clamping block is provided with two clamping rods on the side close to the multi-gear shaft, and the clamping rods are arranged on the clamping block along the axis direction of the base, and the effect is that the design of the clamping rod increases the contact area between the clamping block and the multi-gear shaft, improves the uniformity of the clamping force, and reduces the damage to the gear surface during clamping. The design of the two clamping rods can adapt to different gear diameters.

[0017] Preferably, a plurality of rollers are arranged on the surface of the top block in contact with the clamping block, and the effect is that the design of the rollers changes the sliding friction between the top block and the clamping block into rolling friction, reduces the friction resistance, improves the smoothness of clamping, and at the same time, the use of the rollers can also reduce the wear of the parts and prolong the service life of the clamp.

[0018] A multi-gear hole grinding device, the multi-gear hole grinding device comprises a multi-gear hole grinding clamp according to any one of the embodiments. The effect is that by integrating the above-mentioned clamp on the grinding device, efficient and accurate grinding of the multi-gear hole is realized. The optimized design of the clamp realizes clamping of the multi-gear shaft by simultaneously clamping the multi-gear by multiple clamping blocks, ensures that the multi-gear and the base are coaxial, and when the multi-gear hole is machined, the stress on one side of the hole will not deviate. The top block is in contact with the clamping block through the inclined surface, and the top block is pushed to slide in the left-right direction during the movement of the clamping block, and the limiting column on the top block is close to the gear teeth and clamps them. By moving the two top blocks away from each other, the top block is pushed against the gear side surface arranged on both sides, thereby limiting the position of the gear, and by increasing the contact area, the rotation of the gear is limited, and by the cooperation of the limiting column and the gear teeth, the stability of clamping is further improved, and the vibration and error in the machining process are reduced.

[0019] By adopting the above technical scheme, the application has the following beneficial effects:

[0020] 1、By setting up by the positioning block, clamp block and top block of clamping assembly, clamp block moves along the direction perpendicular to the axis of pedestal, through a plurality of clamp block clamping multiple gear simultaneously, realize to multiple gear shaft clamping, ensure multiple gear and pedestal coaxial. When the inner hole of multiple gear is processed, the inner hole unilateral stress also will not deviate. Top block through the slope and clamp block contact, clamp block moves will push top block along the left and right direction sliding, the limit post on the top block will be close to the gear tooth and card into the tooth groove. Through the action of two top block away from each other, let the top block against the side surface of gear both sides, and then limit the gear position, at the same time, through increasing the contact area to limit the gear rotation, and then through the cooperation of limit post and gear tooth, further improve the clamping stability, effectively reduce the vibration and error in the process of processing.

[0021] 2、Through the setting of multiple limit posts, the number of clamping points is increased, so that the clamp can more accurately adapt to multiple gear with different number of teeth and modulus, and the versatility of the clamp is improved. At the same time, the setting mode of the outermost limit position of the limit post can avoid interference even when it is against the gear tooth part when limiting the gear, and does not affect the normal work of other limit posts. The cooperation design of guide groove and guide column ensures that the limit post always keeps stable when sliding, preventing the limit function from failing due to inclination or jamming. The elastic force of the spring makes the limit post automatically reset in the unclamped state, simplifying the operation process; At the same time, it provides moderate elastic force in the clamping process, so that the limit post will not be jammed due to friction force when it extends into the gear gap.

[0022] 3、The cooperation design of mounting hole and mounting rod makes the clamp block always keep perpendicular to the axis of pedestal during movement, avoiding the movement distance of the top block on both sides of the clamp block being inconsistent due to force deviation, thereby preventing clamping failure and improving the stability of clamp block movement. The design of sliding groove and guide wheel makes the top block run smoothly when sliding, avoiding jamming caused by excessive friction. The rolling action of guide wheel can also reduce wear and tear, prolonging the service life of the clamp. The initial state of the elastic expansion piece makes the top block automatically reset when it is not clamped, keeping the shortest distance between the two top blocks, and fixing the initial position of the clamp block, making the clamping process more stable. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the clamp of the present application.

[0024] Figure 2 It is the structure diagram of the clamp of the present application clamping multiple gear.

[0025] Figure 3 It is the structure diagram of the positioning block of the present application.

[0026] Figure 4 It is the structure diagram of the top block of the present application.

[0027] Figure 5 As Figure 4 An enlarged schematic view of part A.

[0028] Figure 6 A schematic view of the claw structure of the present application.

[0029] Figure 7 A schematic view of the mounting slot structure of the present application.

[0030] Figure 8 A schematic view of the mounting structure of the top block of the present application.

[0031] Figure 9 A schematic view of the roller structure of the present application.

[0032] Reference signs:

[0033] 1, pedestal; 11, claw; 111, limit bolt; 2, clamping assembly; 21, positioning block; 211, mounting slot; 212, mounting hole; 213, sliding slot; 22, clamping block; 221, mounting rod; 222, clamping rod; 223, roller; 23, top block; 231, guide wheel; 232, elastic expansion piece; 3, limit column; 31, guide slot; 32, guide column; 33, spring. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0035] In the related prior art, when grinding a multiple gear, the multiple gear to be machined is clamped on a grinding device, the multiple gear is clamped by a three-jaw chuck of the grinding device, the multiple gear is coaxial with the axis of the three-jaw chuck through the multiple claws 11, and when grinding is performed by the grinding device, the axis of the outer gear ring of the multiple gear is coaxial with the axis of the inner hole after the gear is machined by grinding, but the clamping position of the claw 11 and the gear is less during clamping, which causes the gear to loosen easily during grinding on the inner control side.

[0036] As Figures 1 to 9 shown, the present application provides a multiple gear inner hole grinding clamp, and the specific embodiments of the present application are described in detail in combination with the drawings. Figure 2The overall structure of the fixture is shown, which shows the position relationship of the pedestal 1, the clamping jaw 11 and the clamping assembly 2. The pedestal 1 is horizontally arranged along the left-right direction on the grinding equipment, and a plurality of clamping jaws 11 are arranged around the pedestal 1. The number of clamping jaws 11 is determined according to actual processing requirements, and is usually three or four to achieve uniform clamping. The clamping assembly 2 corresponds to the clamping jaw 11 one by one, and the clamping assembly 2 includes a positioning block 21, a clamping block 22 and a top block 23. The top block 23 is provided with a limiting column 3. The positioning block 21 is arranged on the side of the clamping jaw 11 close to the multi-gear, and a plurality of positioning blocks 21 move towards the multi-gear at the same time. The positioning block 21 is provided with a mounting groove 211, and the clamping block 22 is arranged in the middle of the mounting groove 211. The clamping block 22 is perpendicular to the bottom surface of the mounting groove 211 and can be extended and retracted. Two top blocks 23 are arranged on the left and right sides of the clamping block 22. When the clamping block 22 abuts against the shaft of the multi-gear, the clamping block 22 drives the two top blocks 23 to move away in the left-right direction, so that the two top blocks 23 abut against the side surfaces of the left and right gears. When the two top blocks 23 move away from each other in the left-right direction, the top block 23 gradually approaches the multi-gear along with the positioning block 21. When the top block 23 approaches the multi-gear, the limiting column 3 moves into the tooth groove of the multi-gear, thereby limiting the rotation of the multi-gear.

[0037] By arranging the clamping block 22 and the top block 23 on the positioning block 21, the multi-gear shaft can be clamped by the plurality of clamping blocks 22 at the same time. The wide clamping part of the clamping block 22 can effectively make the multi-gear coaxial with the three-jaw chuck. At the same time, the top blocks 23 arranged on both sides of the clamping block 22 can quickly abut against the side walls of the left and right gears under the action of the clamping block 22 and the positioning block 21 when the clamping block 22 abuts against the multi-gear shaft. The top block 23 can further adjust the coaxiality of the multi-gear shaft and the three-jaw chuck axis. During grinding, the grinding assembly contacts the inner hole of the multi-gear on one side, and the top block 23 can better limit the deviation of the multi-gear axis.

[0038] As shown in Figures 2 to 9 The position relationship of the clamping assembly 2 is shown. The positioning block 21 is fixed on the side of the clamping jaw 11 close to the axis of the pedestal 1. The mounting groove 211 is arranged on the positioning block 21 and opens towards the multi-gear. The mounting groove 211 penetrates in the left-right direction. The mounting groove 211 is preferably machined on the positioning block 21 by turning to ensure the strength of the positioning block 21 as a whole. The width of the mounting groove 211 in the front-rear direction is less than 2 / 3 of the width of the positioning block 21, so as to ensure the strength of the positioning block 21 on both sides of the mounting groove 211 and provide sufficient clamping force during clamping.

[0039] The clamping block 22 is telescoped on the positioning block 21, the positioning block 21 is provided with a mounting hole 212 at the center position, and the clamping block 22 is provided with a mounting rod 221 at the end away from the axis of the pedestal 1. The mounting rod 221 cooperates with the mounting hole 212 on the positioning block 21, so that the clamping block 22 can move perpendicular to the axis of the pedestal 1. By providing the mounting hole 212 and the mounting rod 221, it is ensured that the clamping block 22 always moves in a straight line during movement, avoiding displacement of the clamping block 22 due to force deviation, which causes unstable clamping.

[0040] Two top blocks 23 are symmetrically arranged on both sides of the clamping block 22. The surface of the top block 23 in contact with the clamping block 22 is a slope. The design of the slope allows the clamping block 22 to push the top block 23 to slide in the left and right directions when moving. The sliding track of the top block 23 is defined by a sliding groove 213. The sliding groove 213 is arranged on the front and rear sides of the bottom of the mounting groove 211 of the positioning block 21. The sliding groove 213 extends in the left and right directions. The sliding groove 213 penetrates the positioning block 21 in the left and right directions. The top block 23 is provided with guide wheels 231 on the front and rear sides. The guide wheels 231 cooperate with the sliding groove 213 to ensure smooth operation of the top block 23 during sliding and reduce friction loss.

[0041] A roller 223 is arranged on the slope of the top block 23. The roller 223 can significantly reduce the sliding friction resistance between the contact surface of the clamping block 22 and the top block 23. The selection of the material of the roller 223 (such as bearing steel) further enhances the wear resistance and ensures long-term stable operation. When the clamping block 22 moves, the top block 23 is pushed to slide in the left and right directions through the slope. Direct contact of metal surfaces can generate a large amount of friction, which not only increases the demand for driving force, but also causes jamming and surface wear. By converting sliding friction to rolling friction through the roller 223, the friction coefficient is greatly reduced, making the top block 23 more easily slide under the push of the clamping block 22, responding more sensitively, especially reducing the influence of static friction on initial movement, ensuring smooth and efficient pushing process.

[0042] The roller 223 makes the operation more labor-saving, especially suitable for high-speed or frequent movement working conditions. At the same time, the reduced friction reduces heat generation and part wear, prolongs the service life of the top block 23, the clamping block 22 and related parts, and reduces maintenance cost. In addition, the roller 223 ensures smooth and uniform movement, avoiding jamming or vibration. Combined with the cooperation of the guide wheels 231 in the sliding groove 213, the roller 223 forms a double-rolling mechanism on the slope, making the entire mechanism run more smoothly and durably.

[0043] As Figures 3 to 6As shown, during the clamping process, the clamping assembly 2, with its clamping block 22 and top block 23 engaging at an inclined plane, pushes the limiting post 3 to clamp the gear teeth. When the clamping block 22 moves towards the axis of the platform 1, the inclined plane of the clamping block 22 contacts the top block 23 and pushes the top block 23 to slide in the left-right direction, causing the top blocks 23 to move away from each other until they abut against the side of the multi-gear. Multiple guide grooves 31 are provided on the side of the top block 23, with each guide groove 31 perpendicular to the axis of the platform 1. Guide posts 32 are provided along the length of each guide groove 31, and the limiting post 3 passes through the guide post 32 and can slide within the guide groove 31, approaching or moving away from the axis of the platform 1. A spring 33 is fitted onto the guide post 32. Initially, the spring 33 positions the limiting post 3 at the end of the guide groove 31 closest to the axis of the platform 1. When the top block 23 approaches the shaft of the multi-gear, the limiting post 3 approaches and locks onto the tooth groove of the multi-gear, thus achieving gear positioning and clamping.

[0044] By symmetrically arranging top blocks 23 on both sides of the clamping block 22 and setting matching inclined surfaces to push the top blocks 23 away in the left and right directions, and under the constraint of the mounting rod 221 and the mounting hole 212, the two top blocks 23 move synchronously. When clamped by multi-gear, both sides clamp synchronously, which is more stable and prevents deviation from causing unstable clamping.

[0045] like Figures 3 to 6 As shown, the positioning block 21 is in a sliding adjustment state, allowing it to slide left and right along the chuck 11 and be locked by the limit bolt 111. This sliding design allows the positioning block 21 to flexibly adjust its position according to the size of the multi-gear, meeting the clamping requirements of different gear specifications. The chuck 11 is equipped with the limit bolt 111; once the positioning block 21 is adjusted to the appropriate position, tightening the limit bolt 111 locks it in place, ensuring it does not shift during processing. This design improves the adaptability of the fixture, making it suitable for various types of multi-gear and allowing for quick disassembly and repair when needed.

[0046] like Figures 4 to 9 The diagram illustrates the installation relationship between the clamping block 22 and the positioning block 21, the mating structure of the mounting rod 221 and the mounting hole 212, and their movement relationship. The mounting hole 212 is perpendicular to the axis of the base 1. The mounting rod 221 mates with the mounting hole 212, allowing the clamping block 22 to move perpendicularly to the positioning block 21. Through the design of the mating structure between the mounting rod 221 and the mounting hole 212, the movement relationship of the clamping block 22 relative to the positioning block 21 is restricted, improving the stability of the clamping block 22's movement, reducing the difficulty of equipment assembly, and ensuring that the clamping block 22 maintains stable movement throughout the clamping process.

[0047] The two ends of the two top blocks 23 close to each other are provided with elastic expansion pieces 232, the two ends of the elastic expansion piece 232 are fixedly arranged on the two top blocks 23 respectively, and the elastic expansion piece 232 is original length in the initial state, so that the distance between the two top blocks 23 is minimum. When the clamping block 22 pushes the top block 23 to slide, the elastic expansion piece 232 is stretched to provide a certain elastic buffer, so that the two top blocks 23 are not out of sync due to uneven force, and at the same time, the initial state of the elastic expansion piece 232 ensures that the top block 23 is automatically reset when it is not clamped, thereby simplifying the operation process of resetting.

[0048] As shown in Figures 3 to 6 Fig. 6 is a schematic view of the clamping of the clamping block 22 and the multi-union gear shaft, which shows the positions of the clamping rods 222 and the gear shaft and the setting position of the clamping rods 222. The side of the clamping block 22 close to the multi-union gear shaft is provided with two clamping rods 222, and the clamping rods 222 are arranged on the clamping block 22 along the axis direction of the pedestal 1. The clamping rods 222 increase the contact area between the clamping block 22 and the multi-union gear shaft, improve the uniformity of the clamping force, and reduce the damage to the surface of the multi-union gear during clamping. The design of the clamping rod 222 can also adapt to gear shafts of different diameters, improving the practicality and applicability of the clamp.

[0049] The working principle of the present application is described in combination with specific application scenarios as follows:

[0050] Firstly, before the inner hole grinding of the multi-union gear, the clamp on the equipment workbench needs to be adjusted. The pedestal 1 is firmly fixed on the workbench of the equipment through bolts or other fixing methods to ensure that it does not move during processing. Then, the position of the positioning block 21 is adjusted according to the specifications of the multi-union gear to be processed. The positioning block 21 slides left and right along the claw 11, and can be locked in real time during the sliding process through the limiting bolt 111 to ensure that the multi-union gear does not interfere with the pedestal 1 when clamped, and at the same time, the multi-union gear is close to the pedestal 1, improving the stability of clamping. The flexible sliding design of the positioning block 21 enables it to adapt to multi-union gears of different diameters, thereby improving the versatility of the clamp.

[0051] Place the multi-union gear in the center of the clamp, start the equipment, and drive the clamping assembly 2 to approach the multi-union gear shaft with the claw 11. The clamping block 22 moves along the direction perpendicular to the axis of the pedestal 1 through the cooperation of the mounting rod 221 and the mounting hole 212 on the positioning block 21. The linear motion of the clamping block 22 ensures that it does not produce angular deviation when approaching the multi-union gear shaft, thereby avoiding unstable clamping due to assembly errors. When the clamping block 22 contacts the multi-union gear shaft, continue to apply clamping force to keep the multi-union gear and the pedestal 1 in a coaxial state. This process is shown in the figure, and the cooperation of the mounting rod 221 of the clamping block 22 and the mounting hole 212 ensures the stability of clamping.

[0052] The inclined surface of the clamping block 22 is in contact with the top block 23 and pushes the top block 23 to slide along the sliding groove 213. The guide wheels 231 on both sides of the top block 23 cooperate with the sliding groove 213 to ensure smooth movement of the top block 23 during sliding, avoiding the phenomenon of jamming caused by excessive friction. As the top block 23 gradually approaches the multi-gear, the limiting column 3 gradually approaches the gear groove of the multi-gear. The initial position of the limiting column 3 is maintained by the spring 33 at one end of the guide groove 31 close to the axis of the pedestal 1. When the top block 23 slides, the limiting column 3 moves and clamps the gear teeth, completing the positioning and clamping of the gear. The elastic return function of the limiting column 3 simplifies the operation process, and the limiting column 3 directly opposite the gear teeth can give way without interference during clamping.

[0053] The elastic expansion piece 232 arranged between the two top blocks 23 is stretched during clamping. When the clamping block 22 pushes the top block 23 to slide, the elastic expansion piece 232 is stretched, providing a certain elastic buffer for the clamping process. The top block 23 is automatically reset in the unclamped state, thereby simplifying the operation process. The expansion direction of the elastic expansion piece 232 matches the sliding direction of the top block 23, further improving the reliability of the clamp.

[0054] In the design of the clamping rod 222, two clamping rods 222 are arranged on the side of the clamping block 22 close to the multi-gear shaft, and the clamping rods 222 are arranged along the axis direction of the pedestal 1. The clamping rods 222 increase the contact area between the clamping block 22 and the multi-gear shaft, making the clamping force more uniform, and reducing damage to the gear surface during clamping. In addition, the design of the clamping rod 222 can adapt to gear shafts of different diameters, further improving the versatility of the clamp.

[0055] The device starts the grinding device to grind the inner hole of the multi-gear. During grinding, the clamp ensures that the multi-gear always maintains the coaxial state with the pedestal 1 through the cooperation of the clamping block 22 and the limiting column 3, avoiding the deflection problem caused by the few clamping points of the traditional clamp. At the same time, the cooperation of the limiting column 3 and the gear teeth further improves the stability of clamping, reduces the risk of rotation during processing, and the optimized design of the clamp significantly improves the precision and efficiency of grinding.

[0056] The application further discloses a multi-connection gear hole grinding device, which comprises the multi-connection gear hole grinding clamp, the clamp is installed on a workbench of the device through the base 1, the clamping jaw 11 and the clamping assembly 2 are arranged around the base 1 axis to form a full-range clamping of the multi-connection gear, during operation of the device, the clamp firstly clamps the multi-connection gear shaft through movement of the clamping block 22 to ensure that the gear is coaxial with the base 1, then the limiting column 3 on the top block 23 clamps the gear teeth to complete accurate positioning and clamping of the gear, on this basis, the device starts the grinding device to perform efficient and accurate grinding processing on the gear hole, and the grinding device optimizes the clamping performance and adaptability of the clamp by improving the structural design of the clamping assembly 2.

[0057] In conclusion, the application optimizes the clamping performance and adaptability of the clamp by improving the structural design of the clamping assembly 2, solves the technical problems existing in the multi-connection gear hole grinding processing in the prior art, and has high practicability and popularization value.

[0058] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary, and should not be construed as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A multiple gear hole grinding jig comprising: The base and the plurality of clamping claws are arranged circumferentially on the base, characterized in that the clamping claws are provided with clamping assemblies, the clamping assemblies correspond to the clamping claws one by one, the clamping assemblies are arranged on the side of the clamping claws close to the axis of the base, the clamping assemblies comprise a positioning block, a clamping block and two top blocks, the positioning block is provided with a mounting groove, the opening of the mounting groove faces the multi-gear, the clamping block is arranged on the positioning block in an extendible manner, the clamping block is close to or away from the base perpendicularly to the axis of the base, the two top blocks are symmetrically arranged on the left and right sides of the clamping block, the surfaces of the clamping block and the two top blocks in contact are inclined surfaces, the top blocks are arranged in the mounting groove in a sliding manner along the left and right directions, and the mutually faraway surfaces of the two top blocks are slidably provided with limiting columns. When clamping, the plurality of clamping claws synchronously approach the multi-gear shaft, the plurality of clamping blocks simultaneously clamp the multi-gear shaft, the multi-gear is coaxial with the base, the two top blocks are away from each other and abut against the side surface of the gear, and the limiting columns clamp the gear teeth. The limiting columns are arranged on the side surface of the top block, when clamping, the plurality of limiting columns are located at the outermost end, and the limiting columns are located on the outer side of the gear in the projection surface of the gear. The side surface of the top block is provided with a plurality of guide grooves, the plurality of limiting columns are slidably arranged in the guide grooves, guide columns are arranged in the guide grooves along the length, the limiting columns are arranged on the guide columns, springs are arranged on the guide columns in a sleeved manner, and the springs make the limiting columns located at one end of the guide groove close to the axis of the base in an initial state.

2. The multi-gear hole grinding fixture according to claim 1, wherein, The positioning block is arranged on the clamping claw in a sliding manner along the left and right directions, the clamping claw is provided with a limiting bolt, and the positioning block is locked by the limiting bolt after left and right adjustment is completed.

3. The multi-gear hole grinding fixture according to claim 2, wherein, An installation hole is arranged in the mounting groove of the positioning block, the installation hole is arranged perpendicularly to the axis of the base, one end of the clamping block away from the axis of the base is provided with an installation rod, the installation rod is matched with the installation hole, and the clamping block moves perpendicularly to the positioning block.

4. The multi-gear hole grinding fixture according to claim 3, wherein, Both sides of the bottom of the mounting groove are provided with sliding grooves arranged along the left and right directions, the two top blocks are respectively provided with a plurality of guide wheels arranged on the left and right sides, the guide wheels are matched with the sliding grooves, and the two top blocks are close to or away from each other.

5. The multi-gear hole grinding fixture according to claim 4, wherein, One end of the two top blocks close to each other is provided with an elastic expansion piece, the elastic expansion piece is in an original length in an initial state, and the elastic expansion piece makes the distance between the two top blocks minimum.

6. The multi-gear hole grinding fixture according to claim 5, wherein, Two clamping rods are arranged on one side of the clamping block close to the multi-gear shaft, and the clamping rods are arranged on the clamping block along the axis direction of the base.

7. The multi-gear hole grinding fixture according to claim 5, wherein, A plurality of rollers are arranged on the surface of the top block in contact with the clamping block.

8. A multiple gear hole grinding apparatus characterized by comprising: The multi-gear inner hole grinding equipment comprises the multi-gear inner hole grinding clamp according to any one of claims 1 to 7.

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