Automatic gear hobbing machine for vehicle drive shaft machining

Abstract

The application discloses a kind of automatic gear rolling machines for processing of vehicle drive shaft, including support, upper slide box with upper rack and lower slide box with lower rack are internally equipped, the side of support is provided with moving cavity, the end of upper slide box and lower slide box is provided with first limiting component, first limiting component includes sliding groove, clamping block and driving part, clamping block can be movably arranged in sliding groove, driving part can drive clamping block to clamp the cavity wall of moving cavity.By setting first limiting component, when upper slide box and lower slide box move to the required position, driving part drives clamping block to move relatively in sliding groove at this time, so as to be clamped on the cavity wall of moving cavity, so that part of the reaction force generated when workpiece is rolled is borne by clamping block, the force received by cylinder and shock absorber is reduced, so that the position of upper slide box and lower slide box is more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear rolling machines, in particular to an automatic gear rolling machine for processing vehicle drive shafts. BACKGROUND

[0002] With the development of modern society and economy and the deepening of industrialization and technological progress, the process now has higher and higher requirements for efficiency. In the drive shaft, there are often involute splines. In the face of involute spline processing, a gear rolling machine is often used for processing, which is more efficient.

[0003] Chinese patent CN115647254A provides a precision gear rolling machine for vehicle drive shafts, which comprises a base assembly and a gear rolling mechanism. One end of the base assembly is provided with a bolted feeding assembly above it. The other end of the base assembly is provided with a bolted clamping member above it. The top side of the base assembly is provided with a bolted gear rolling mechanism.

[0004] The upper rack of the gear rolling mechanism in the above patent clamps and rolls the workpiece by driving the cylinder. When the workpiece is rolled, the force acting on the workpiece is fed back to the driving cylinder, making it difficult for the driving cylinder to maintain stable clamping of the workpiece. The distance between the upper rack and the lower rack changes, affecting the rolling of the workpiece, and the rolling of the workpiece is not accurate enough. SUMMARY

[0005] In view of the problems existing in the prior art, an automatic gear rolling machine for processing vehicle drive shafts is provided. When the upper sliding box and the lower sliding box move to the desired position, the driving part drives the clamping block to move relatively in the sliding groove, so that it is clamped on the cavity wall of the moving cavity. This allows part of the reaction force generated when the workpiece is rolled to be borne by the clamping block, reducing the force on the cylinder and the shock absorber. This not only makes the position of the upper sliding box and the lower sliding box more stable, but also protects the cylinder and the shock absorber.

[0006] To solve the problems in the prior art, the present application provides an automatic gear rolling machine for processing vehicle drive shafts, which comprises a gear rolling mechanism and a feeding mechanism. The gear rolling mechanism comprises a bracket, an upper sliding box with an upper rack, and a lower sliding box with a lower rack. The side of the bracket is provided with a moving cavity for facilitating the movement of the upper sliding box and the lower sliding box. One end of the upper sliding box and the lower sliding box opposite to each other is provided with a pair of first limiting assemblies. Each pair of first limiting assemblies is arranged close to the moving cavities on both sides of the bracket. The first limiting assembly comprises a sliding groove, a clamping block and a driving part.

[0007] The sliding groove is provided with two sliding grooves, which are mirror images arranged on one side of the vertical cavity wall of the moving cavity.

[0008] The clamping blocks are arranged in pairs, each pair of clamping blocks is arranged in correspondence with a sliding groove, and the clamping blocks are movably arranged in the sliding grooves.

[0009] The driving component is arranged on one side of the sliding groove, and the driving component can drive the clamping blocks to clamp the cavity wall of the moving cavity.

[0010] Preferably, the driving component further comprises a first threaded rod and a limiting motor.

[0011] The first threaded rod penetrates through the two sliding grooves, and the clamping blocks are movably arranged on the first threaded rod.

[0012] The limiting motor is arranged on one side of the first threaded rod, a main limiting gear is arranged on an output shaft of the limiting motor, a secondary limiting gear is arranged on the first threaded rod and engaged with the main limiting gear, and a protection box is further arranged on the outer sides of the main limiting gear and the secondary limiting gear.

[0013] Preferably, one side of the first limiting assembly is further provided with a limiting air cylinder, an output end of the limiting air cylinder is provided with a push plate, one side of the push plate facing the main limiting gear is provided with a buffer pad, and the buffer pad can abut against the main limiting gear.

[0014] Preferably, one side of the clamping block facing the cavity wall of the moving cavity is provided with an anti-skid pad, and the anti-skid pad is provided with a plurality of anti-skid stripes on one side facing the cavity wall of the moving cavity.

[0015] Preferably, the gear hobbing machine further comprises a second limiting assembly, and the second limiting assembly comprises a second threaded rod, a rotating handle and a locking handle.

[0016] The side of the upper sliding box is provided with two support blocks arranged in a diagonal line, the side of the lower sliding box is provided with an abutting plate corresponding to the support blocks, and one side of the support blocks is further provided with a distance sensor.

[0017] The second threaded rod is movably arranged vertically on the support blocks, and one end of the second threaded rod can abut against the abutting plate.

[0018] The rotating handle is arranged at an end of the second threaded rod away from the abutting plate.

[0019] The locking handle is arranged on one side of the support blocks, and one end of the locking handle facing the second threaded rod can abut against the second threaded rod.

[0020] Preferably, the gear hobbing machine further comprises a pressing assembly, and the pressing assembly comprises a pressing motor and a pressing threaded rod.

[0021] The pressing motor is arranged at the uppermost end of the support, and a main gear is arranged on an output end of the pressing motor.

[0022] The pressure screw rod is arranged through the upper end of the support, one end of the pressure screw rod close to the upper sliding box is provided with a pressure block, the pressure block is located directly above the workpiece, one end of the pressure screw rod away from the upper sliding box is sleeved with a pinion, the pinion and the main gear are arranged in meshing mode, and the outer side of the pinion is provided with a gear box.

[0023] Preferably, a sliding block is arranged to slide in the upper sliding box, the lower end of the sliding block is provided with a sliding rail, one end of the sliding rail is provided with a clamping block, and a plurality of mounting blocks are arranged on both sides of the long side of the upper sliding box along the sliding block.

[0024] The upper end of the upper rack is provided with a sliding groove, the sliding groove and the sliding rail are matched, one end of the sliding groove is provided with a clamping groove matched with the clamping block.

[0025] Preferably, one side of the upper sliding box is provided with an opening, the opening is provided with a mounting plate, the end of the mounting plate towards the opening is provided with a plurality of guide rods, and the mounting plate is installed at the opening through bolts.

[0026] Preferably, the gear hobbing machine further comprises a locking assembly, the locking assembly comprises a locking cylinder, a push block and a locking block.

[0027] The sliding block is provided with a mounting groove close to one side of the upper sliding box.

[0028] The locking cylinder is arranged in the mounting groove, the output end of the locking cylinder is provided with a push block, and one side of the push block away from the locking cylinder is provided with a pressure inclined surface.

[0029] The locking block is arranged on the side of the push block away from the locking cylinder, the locking block is provided with a pressure inclined surface matched with the pressure inclined surface, and the locking block can abut against the inner wall of the upper sliding box.

[0030] Preferably, the side of the mounting groove is provided with a limiting groove, the locking block is provided with a limiting block matched with the limiting groove, the end of the limiting block towards the outer side of the sliding block is provided with an elastic block, one side of the elastic block away from the limiting block abuts against the limiting groove, and the end of the locking block towards the outer side of the sliding block is provided with a friction pad.

[0031] The beneficial effects of the present application compared with the prior art are:

[0032] 1. The first limiting assembly is arranged, when the upper sliding box and the lower sliding box move to the required position, the driving part drives the clamping block to move in the sliding groove, so that the clamping block is clamped on the cavity wall of the moving cavity, so that part of the reaction force generated when the workpiece is rolled is borne by the clamping block, the force borne by the cylinder and the shock absorber is reduced, so that the position of the upper sliding box and the lower sliding box is more stable, and the cylinder and the shock absorber are protected.

[0033] 2. The second threaded rod and the locking handle are arranged, after the workpiece is determined, the second threaded rod is adjusted, and the locking handle is locked, so that when the upper sliding box and the lower sliding box move to the required position during rolling, the second threaded rod and the abutting plate abut, ensuring that the distance between the upper sliding box and the lower sliding box is not too close, and ensuring the rolling precision.

[0034] 3. The locking cylinder, the locking block and the push block are arranged, the locking cylinder pushes the push block, the push block pushes the pressure inclined surface on the locking block through the pressure inclined surface, so that the locking block moves towards the inner wall of the upper sliding box or the lower sliding box, and finally the locking block abuts against the inner wall of the upper sliding box or the lower sliding box, preventing the upper rack and the lower rack from deviating when not working, so as to ensure that the moving distance of the upper rack and the lower rack during rolling is not limited. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0036] Figure 2 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0037] Figure 3 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0038] Figure 4 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0039] Figure 5 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0040] Figure 6 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0041] Figure 7 It is a kind of automatic tooth rolling machine for processing of vehicle drive shaft.

[0042] Figure 8It is a kind of vehicle drive shaft processing automatic gear hobbing machine's upper slide box and mounting plate's exploded schematic view.

[0043] Figure 9 It is a kind of vehicle drive shaft processing automatic gear hobbing machine's second limiting component's partial exploded schematic view.

[0044] Figure 10 It is a kind of vehicle drive shaft processing automatic gear hobbing machine's upper slide block's partial schematic view.

[0045] Figure 11 It is a kind of vehicle drive shaft processing automatic gear hobbing machine's locking assembly's three-dimensional structure schematic view.

[0046] In the figure, the label is: 1-gear hobbing mechanism;11-support;111-moving cavity;112-pressure block;12-upper slide box;121-slide block;1211-slideway;1212-clamp block;1213-mounting block;1214-stiffener;1215-mounting groove;1216-limiting groove;122-upper rack;1221-slotted;1222-clamping groove;123-opening;124-mounting plate;1241-guide rod;125-distance sensor;126-supporting block;13-lower slide box;131-lower rack;132-abutment plate;2-first limiting component;21-sliding groove;211-baffle;22-clamping block;221-non-slip pad;222-non-slip stripe;23-first threaded rod;231-secondary limiting gear;24-limiting motor;241-primary limiting gear;25-limiting cylinder;251-pushing plate;252-cushion pad;26-protection box;3-second limiting component;31-second threaded rod;311-hexagonal counterbore;32-rotary handle;33-locking handle;331-anti-slip block;4-pressing assembly;41-pressing motor;411-primary gear;42-pressing threaded rod;421-secondary gear;422-gear box;423-pressing block;5-locking assembly;51-locking cylinder;52-push block;521-pressing inclined surface;53-locking block;531-pressurized inclined surface;532-limiting block;533-friction pad;534-elastic block;6-feeding mechanism;61-driving motor;62-hydraulic chuck. DETAILED DESCRIPTION

[0047] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments.

[0048] See Figures 1 to 11As shown, an automatic gear hobbing machine for processing automotive drive shafts comprises a hobbing mechanism 1 and a feeding mechanism 6, the hobbing mechanism 1 comprises a support 11, an upper sliding box 12 with an upper rack 122 and a lower sliding box 13 with a lower rack 131, the side of the support 11 is provided with a moving cavity 111 for facilitating the movement of the upper sliding box 12 and the lower sliding box 13, and one end of the upper sliding box 12 and the lower sliding box 13 opposite to each other is provided with a pair of first limiting components 2, each pair of first limiting components 2 is arranged close to the moving cavity 111 on both sides of the support 11, and the first limiting component 2 comprises a sliding groove 21, a clamping block 22 and a driving component;

[0049] The sliding groove 21 is arranged in mirror image on one side of the vertical cavity wall of the moving cavity 111;

[0050] The clamping block 22 is arranged in pairs, and each pair of clamping blocks 22 and sliding grooves 21 are arranged one by one, and the clamping block 22 is movably arranged in the sliding groove 21;

[0051] The driving component is arranged on one side of the sliding groove 21, and the driving component can drive the clamping block 22 to clamp the cavity wall of the moving cavity 111.

[0052] In a specific working state, the feeding mechanism 6 comprises a driving motor 61 and a hydraulic chuck 62, the upper end of the upper sliding box 12 is provided with a cylinder for pushing the upper sliding box 12, and the lower end of the lower sliding box 13 is provided with a shock absorber for pushing the lower sliding box 13, and generally the gear hobbing machine directly clamps the workpiece with the hydraulic chuck 62 and then sends it to the rack for hobbing, and such an upper rack 122 has to bear a large amount of force, and the upper rack 122 is not stable enough to be pushed and tightened by the cylinder alone, thereby reducing the accuracy of hobbing, and the lower rack 131 is also not stable enough to be adjusted by the shock absorber alone;

[0053] By arranging the first limiting component 2 on the end of the upper sliding box 12 and the lower sliding box 13 opposite to each other, when starting to work, the workpiece is first placed between the upper rack 122 and the lower rack 131, the cylinder pushes the upper sliding box 12 and the upper rack 122 to contact the workpiece, at this time the driving component drives the clamping block 22 to move relatively, the clamping block 22 moves in the sliding groove 21 to clamp on the cavity wall of the moving cavity 111, thereby further fixing the upper end of the upper sliding box 12, then the driving motor 61 starts to drive the workpiece to rotate, the workpiece drives the upper rack 122 to rotate for hobbing, the upper sliding box 12 is further fixed by the clamping block 22, thereby making the upper rack 122 more stable during hobbing, when the hobbing is completed, the driving component drives the opposite movement of the clamping block 22, the clamping block 22 is not clamped on the cavity wall of the moving cavity 111, the cylinder drives the upper sliding box 12 to move, and the workpiece is taken out;

[0054] The lower slide box 13 and the lower rack 131 move through the shock absorber, the lower rack 131 starts to move when the upper rack 122 moves, thereby clamping the workpiece in the middle for hobbing, and the first limiting assembly 2 on the lower slide box 13 ensures the stability of the lower slide box 13.

[0055] By setting the first limiting assembly 2, when the upper slide box 12 and the lower slide box 13 move to the required position, at this time the driving part drives the clamping block 22 to move relatively in the sliding groove 21, so as to be clamped on the cavity wall of the moving cavity 111, so that part of the reaction force generated when the workpiece is hobbed is borne by the clamping block 22, reducing the force borne by the cylinder and the shock absorber, so that the position of the upper slide box 12 and the lower slide box 13 is more stable, and the cylinder and the shock absorber are also protected.

[0056] Referring to Figure 5 and Figure 6 , the driving part comprises a first threaded rod 23 and a limiting motor 24;

[0057] The first threaded rod 23 penetrates through the two sliding grooves 21, and the clamping block 22 is movably arranged on the first threaded rod 23;

[0058] The limiting motor 24 is arranged on one side of the first threaded rod 23, a main limiting gear 241 is arranged on an output shaft of the limiting motor 24, a secondary limiting gear 231 meshing with the main limiting gear 241 is arranged on the first threaded rod 23, and a protection box 26 is further arranged on the outer sides of the main limiting gear 241 and the secondary limiting gear 231.

[0059] In a specific working state, two pairs of threads are arranged on the first threaded rod 23, each pair of threads corresponds to a pair of clamping blocks 22, and each pair of threads comprises two threads with opposite directions, so that the clamping blocks 22 can move towards or away from each other, when clamping is needed, at this time the limiting motor 24 starts to rotate, the rotation of the limiting motor 24 drives the main limiting gear 241 to rotate, the main limiting gear 241 drives the secondary limiting gear 231 and the first threaded rod 23 to start to rotate, the rotation of the first threaded rod 23 makes the two pairs of clamping blocks 22 move towards each other, thereby being clamped on the cavity wall of the moving cavity 111, the sliding groove 21 ensures that the clamping block 22 can stably move in a straight line, the protection box 26 protects the main limiting gear 241 and the secondary limiting gear 231 from being damaged by the outside, and a baffle 211 is further arranged on the end of the clamping block 22 away from each other, which prevents the clamping block 22 from falling off;

[0060] Stopping clamping only needs to reverse the limiting motor 24.

[0061] By setting the first threaded rod 23 and the limiting motor 24, the limiting motor 24 drives the first threaded rod 23, and the first threaded rod 23 can control two pairs of clamping blocks 22 at the same time, so that the two pairs of clamping blocks 22 can quickly clamp the cavity wall of the moving cavity 111, which is simple, fast and ensures the efficiency of clamping.

[0062] Referring to Figure 6 As shown, one side of the first limiting assembly 2 is also provided with a limiting air cylinder 25, and the output end of the limiting air cylinder 25 is provided with a push plate 251. The side of the push plate 251 towards the main limiting gear 241 is provided with a buffer pad 252, and the buffer pad 252 can abut against the main limiting gear 241.

[0063] When the clamping is completed, the limiting air cylinder 25 starts to move at this time, and the limiting air cylinder 25 drives the push plate 251 to move towards the side of the main limiting gear 241. When the buffer pad 252 on the push plate 251 abuts against the main limiting gear 241, the rotation of the main limiting gear 241 is affected under the action of the buffer pad 252 at this time, so that the rotation of the first threaded rod 23 will not be easily caused, and the clamping of the clamping block 22 is more stable. The buffer pad 252 has a certain elasticity, which reduces the damage to the main limiting gear 241.

[0064] Referring to Figure 5 As shown, the clamping block 22 is provided with an anti-skid pad 221 on the side towards the cavity wall of the moving cavity 111, and the anti-skid pad 221 is provided with a plurality of anti-skid stripes 222 on the side towards the cavity wall of the moving cavity 111.

[0065] By setting the anti-skid pad 221 and the anti-skid stripes 222, the stability of the clamping block 22 when clamped on the cavity wall of the moving cavity 111 is ensured, and the stability of the workpiece when being rolled by the upper sliding box 12 and the lower sliding box 13 is further improved.

[0066] Referring to Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, the gear rolling machine further comprises a second limiting assembly 3, and the second limiting assembly 3 comprises a second threaded rod 31, a rotating handle 32 and a locking handle 33.

[0067] The side of the upper sliding box 12 is provided with two support blocks 126, and the support blocks 126 are diagonally arranged. The side of the lower sliding box 13 is provided with an abutting plate 132 corresponding to the support blocks 126, and one side of the support block 126 is also provided with a distance sensor 125.

[0068] The second threaded rod 31 is vertically arranged on the support block 126 and one end of the second threaded rod 31 is capable of abutting against the abutting plate 132;

[0069] The rotating handle 32 is arranged at one end of the second threaded rod 31 away from the abutting plate 132;

[0070] The locking handle 33 is arranged on one side of the support block 126 and one end of the locking handle 33 is capable of abutting against the second threaded rod 31.

[0071] In a specific working state, the distance between the upper rack 122 and the lower rack 131 required by different workpieces is different. Before work starts, the second threaded rod 31 is first rotated by rotating the handle 32. The second threaded rod 31 is provided with threads and is thus capable of moving in the support block 126. When the second threaded rod 31 abuts against the support block 126 at an appropriate position (i.e. when the upper slide box 12 and the lower slide box 13 are being toothed, the second threaded rod 31 abuts against the support block 126), the locking handle 33 is then rotated to abut against the second threaded rod 31, thereby fixing the second threaded rod 31. In this way, the distance between the upper slide box 12 and the lower slide box 13 is not too close when toothed, ensuring the accuracy of toothed. The distance sensor 125 keeps monitoring during work. When the distance between the upper slide box 12 and the lower slide box 13 changes greatly, it indicates that a fault has occurred and needs to be repaired in time. The diagonal arrangement of the support block 126 ensures stability.

[0072] The side of the locking handle 33 close to the second threaded rod 31 is also provided with a plurality of anti-skid blocks 331 to ensure the locking effect of the locking handle 33. The side of the second threaded rod 31 close to the rotating handle 32 is provided with a hexagonal counterbore 311, and the rotating handle 32 is movably arranged in the hexagonal counterbore 311. In this way, the rotating handle 32 can be stored when the distance does not need to be adjusted, preventing the rotating handle 32 from colliding with external objects when the upper slide box 12 moves.

[0073] By arranging the second threaded rod 31 and the locking handle 33, the second threaded rod 31 is adjusted after the workpiece is determined and is locked by the locking handle 33. In this way, when the upper slide box 12 and the lower slide box 13 are moved to the required position during toothed, the second threaded rod 31 abuts against the abutting plate 132, ensuring that the distance between the upper slide box 12 and the lower slide box 13 is not too close, thereby ensuring the accuracy of toothed.

[0074] Referring to Figures 2 to 4 The toothed machine also comprises a pressing assembly 4, and the pressing assembly 4 comprises a pressing motor 41 and a pressing threaded rod 42.

[0075] The pressing motor 41 is arranged at the uppermost end of the support 11, and an output end of the pressing motor 41 is provided with a main gear 411;

[0076] The pressing threaded rod 42 is arranged through the upper end of the support 11, and one end of the pressing threaded rod 42 close to the upper sliding box 12 is provided with a pressing block 423, which is located directly above the workpiece; and the other end of the pressing threaded rod 42 away from the upper sliding box 12 is sleeved with a secondary gear 421, which is arranged in meshing with the main gear 411; and the outer side of the secondary gear 421 is provided with a gear box 422.

[0077] The place where the upper rack 122 is subjected to the greatest force is the place where the upper rack 122 contacts the workpiece, so it is necessary to exert force on the place to ensure the stability during the tooth rolling; when the upper rack 122 contacts the workpiece, the pressing motor 41 rotates to drive the main gear 411 to rotate, the rotation of the main gear 411 drives the secondary gear 421 to rotate, the secondary gear 421 is provided with a gear box 422 which limits the rotation of the secondary gear 421, so that the rotation of the secondary gear 421 drives the pressing threaded rod 42 to move towards the side of the upper sliding box 12, until the pressing block 423 abuts against the upper sliding box 12, and then the workpiece starts to roll the teeth, at this time the pressing block 423 bears a part of the force generated by the tooth rolling, so that the place where the upper rack 122 contacts the workpiece during the tooth rolling does not separate from the workpiece, thereby further ensuring the accuracy of the tooth rolling;

[0078] The end of the support 11 towards the lower sliding box 13 is provided with a pressure bearing block 112, which is sleeved on the pressing threaded rod 42, so as to increase the contact surface with the pressing threaded rod 42 and reduce the force of the pressing threaded rod 42 on the secondary gear 421, thereby protecting the secondary gear 421.

[0079] Referring to Figure 3 and Figure 7 , the upper sliding box 12 is slidably provided with a sliding block 121, the lower end of the sliding block 121 is provided with a sliding rail 1211, one end of the sliding rail 1211 is provided with a clamping block 1212, and the sliding block 121 is provided with a plurality of mounting blocks 1213 along the long edges of the upper sliding box 12.

[0080] The upper end of the upper rack 122 is provided with a sliding groove 1221, the sliding groove 1221 cooperates with the sliding rail 1211, and one end of the sliding groove 1221 is provided with a clamping groove 1222, which cooperates with the clamping block 1212.

[0081] Different workpieces sometimes need to use different upper racks 122, when the upper rack 122 needs to be replaced, at this time, the sliding groove 1221 on the upper rack 122 is aligned with the sliding rail 1211 under the sliding block 121, the upper rack 122 is directly installed on the sliding block 121, and then the clamping block 1212 is clamped in the clamping groove 1222, preventing the upper rack 122 from moving out of the range of the sliding block 121, after the clamping block 1212 and the clamping groove 1222 are clamped, the mounting block 1213 is fixed on both sides of the upper rack 122 through bolts, so that the upper rack 122 is installed, which is simple and fast, and one person can operate, and the upper end of the sliding block 121 is also provided with a reinforcing rib 1214, which ensures that the sliding block 121 will not bend when the upper rack 122 moves;

[0082] The lower rack 131 is installed in the same way as the upper rack 122.

[0083] Referring to Figure 3 and Figure 8 As shown in the figure, one side of the upper sliding box 12 is provided with an opening 123, and the opening 123 is provided with a mounting plate 124, and the end of the mounting plate 124 towards the opening 123 is provided with a plurality of guide rods 1241, and the mounting plate 124 is installed at the opening 123 through bolts.

[0084] The side of the opening 123 is provided with a through hole matched with the guide rod 1241, when the sliding block 121 needs to be replaced, the bolts on the mounting plate 124 are disassembled, then the mounting plate 124 is disassembled, the sliding block 121 is replaced, and after the sliding block 121 is installed, the guide rod 1241 is inserted into the through hole on the side of the opening 123, the mounting plate 124 is placed at the opening 123, and then the bolts are installed, completing the installation of the sliding block 121, and the guide rod 1241 is used to prevent the mounting plate 124 from being held, facilitating installation.

[0085] Referring to Figure 10 and Figure 11 As shown in the figure, the gear rolling machine further comprises a locking assembly 5, and the locking assembly 5 comprises a locking cylinder 51, a push block 52 and a locking block 53.

[0086] The sliding block 121 is provided with a mounting groove 1215 on one side close to the upper sliding box 12;

[0087] The locking cylinder 51 is arranged in the mounting groove 1215, and the output end of the locking cylinder 51 is provided with a push block 52, and the side of the push block 52 away from the locking cylinder 51 is provided with a pressure inclined surface 521;

[0088] The locking block 53 is arranged on the side of the push block 52 away from the locking cylinder 51, and a pressure receiving slope 531 is arranged on the locking block 53 and matched with the pressure applying slope 521, and the locking block 53 can abut against the inner wall of the upper sliding box 12.

[0089] The sliding block 121 slides in the upper sliding box 12 along with the movement of the upper rack 122, and if the sliding block 121 continues to move when there is no workpiece to drive, the distance of the repeated movement of the upper rack 122 for thread rolling is reduced due to the deviation of the upper rack 122 driven by the sliding block 121, and thus the work flow is affected.

[0090] The locking assembly 5 is arranged in a central symmetry with two, and when there is no thread rolling, the locking cylinder 51 drives the push block 52 to move, the push block 52 drives the pressure receiving slope 531 on the locking block 53 through the pressure applying slope 521, so that the locking block 53 moves along the direction of the pressure applying slope 521, the pressure applying slope 521 guides the locking block 53 towards the inner wall of the upper sliding box 12, so that the locking block 53 abuts against the inner wall of the upper sliding box 12, and the movement of the sliding block 121 is limited, and the sliding block 121 in the lower sliding box 13 is also provided with the locking assembly 5.

[0091] The locking cylinder 51 drives the push block 52, the push block 52 drives the pressure receiving slope 531 on the locking block 53 through the pressure applying slope 521, so that the locking block 53 moves towards the inner wall of the upper sliding box 12 or the lower sliding box 13, and finally the locking block 53 abuts against the inner wall of the upper sliding box 12 or the lower sliding box 13, preventing the upper rack 122 and the lower rack 131 from deviating when not working, so as to ensure that the movement distance of the upper rack 122 and the lower rack 131 during thread rolling is not limited.

[0092] Referring to Figure 10 and Figure 11 The side of the mounting groove 1215 is provided with a limiting groove 1216, the locking block 53 is provided with a limiting block 532 matched with the limiting groove 1216, the end of the limiting block 532 towards the outside of the sliding block 121 is provided with an elastic block 534, the side of the elastic block 534 away from the limiting block 532 abuts against the limiting groove 1216, and the end of the locking block 53 towards the outside of the sliding block 121 is provided with a friction pad 533.

[0093] When the push block 52 pushes the locking block 53, the locking block 53 moves along with the limiting block 532 in the limiting groove 1216, thereby being able to stably abut against the inner wall of the upper sliding box 12, and the friction pad 533 ensures that the locking block 53 and the inner wall of the upper sliding box 12 are in contact more stably, and the locking cylinder 51 does not push the push block 52 at this time, at this time one side of the elastic block 534 and the limiting groove 1216 abut, thereby extruding the limiting block 532 towards the installation groove 1215, thereby making the locking block 53 return to the original position, without affecting the movement of the upper rack 122, and the locking assembly 5 in the lower sliding box 13 is the same as the locking assembly 5 of the upper sliding box 12.

[0094] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An automatic gear rolling machine for processing automotive drive shafts, comprising a gear rolling mechanism (1) and a feeding mechanism (6), wherein the gear rolling mechanism (1) comprises a support (11), an upper sliding box (12) with an upper rack (122) and a lower sliding box (13) with a lower rack (131), and the side of the support (11) is provided with a moving cavity (111) for facilitating the movement of the upper sliding box (12) and the lower sliding box (13), characterized in that, The upper slide box (12) and the lower slide box (13) are provided with a pair of first limiting components (2) at the opposite ends, each pair of first limiting components (2) is arranged close to the moving cavity (111) on both sides of the support (11), the first limiting component (2) comprises a sliding groove (21), a clamping block (22) and a driving component; The sliding groove (21) is provided with two, and the sliding grooves (21) are mirror image arranged on one side of the vertical cavity wall of the moving cavity (111); The clamping block (22) is arranged in pairs, each pair of clamping blocks (22) and the sliding groove (21) are correspondingly arranged, and the clamping block (22) is movably arranged in the sliding groove (21); The driving component is arranged on one side of the sliding groove (21), and the driving component can drive the clamping block (22) to clamp the cavity wall of the moving cavity (111); The upper slide box (12) is provided with a sliding block (121); The gear hobbing machine further comprises a locking assembly (5), the locking assembly (5) comprises a locking cylinder (51), a push block (52) and a locking block (53); The sliding block (121) is provided with a mounting groove (1215) on one side close to the upper slide box (12); The locking cylinder (51) is arranged in the mounting groove (1215), and the output end of the locking cylinder (51) is provided with a push block (52), and one side of the push block (52) away from the locking cylinder (51) is provided with a pressure inclined surface (521); The locking block (53) is arranged on the side of the push block (52) away from the locking cylinder (51), and the locking block (53) is provided with a pressure inclined surface (531) matched with the pressure inclined surface (521), and the locking block (53) can abut against the inner wall of the upper slide box (12); The side of the mounting groove (1215) is provided with a limiting groove (1216), the locking block (53) is provided with a limiting block (532) matched with the limiting groove (1216), one end of the limiting block (532) towards the outside of the sliding block (121) is provided with an elastic block (534), one side of the elastic block (534) away from the limiting block (532) abuts against the limiting groove (1216), and one end of the locking block (53) towards the outside of the sliding block (121) is provided with a friction pad (533).

2. The automatic gear rolling machine for processing driving shaft of vehicle according to claim 1, characterized in that, The driving component further comprises a first threaded rod (23) and a limiting motor (24); The first threaded rod (23) penetrates through the two sliding grooves (21), and the clamping block (22) is movably arranged on the first threaded rod (23); The limiting motor (24) is arranged on one side of the first threaded rod (23), a main limiting gear (241) is arranged on the output shaft of the limiting motor (24), a secondary limiting gear (231) matched with the main limiting gear (241) is arranged on the first threaded rod (23), and a protection box (26) is further arranged on the outer sides of the main limiting gear (241) and the secondary limiting gear (231).

3. The automatic gear rolling machine for processing driving shaft of vehicle according to claim 2, characterized in that, The first limiting assembly (2) is further provided with a limiting air cylinder (25), and the output end of the limiting air cylinder (25) is provided with a push plate (251), and the side, towards the main limiting gear (241), of the push plate (251) is provided with a buffer pad (252) capable of abutting against the main limiting gear (241).

4. The automatic gear rolling machine for machining a driving shaft of a vehicle according to claim 1, characterized in that, The side, towards the cavity wall of the moving cavity (111), of the clamping block (22) is provided with an anti-skid pad (221), and the side, towards the cavity wall of the moving cavity (111), of the anti-skid pad (221) is provided with a plurality of anti-skid stripes (222).

5. The automatic gear rolling machine for machining a driving shaft of a vehicle according to claim 1, characterized in that, The gear rolling machine further comprises a second limiting assembly (3), and the second limiting assembly (3) comprises a second threaded rod (31), a rotating handle (32) and a locking handle (33). The side of the upper sliding box (12) is provided with two support blocks (126) arranged diagonally, and the side of the lower sliding box (13) is provided with abutting plates (132) corresponding to the support blocks (126), and one side of the support block (126) is further provided with a distance sensor (125). The second threaded rod (31) is vertically arranged on the support block (126) and capable of moving, and one end of the second threaded rod (31) is capable of abutting against the abutting plate (132). The rotating handle (32) is arranged at the end, away from the abutting plate (132), of the second threaded rod (31). The locking handle (33) is arranged at one side of the support block (126), and one end of the locking handle (33), towards the second threaded rod (31), is capable of abutting against the second threaded rod (31).

6. The automatic gear rolling machine for machining a driving shaft of a vehicle according to claim 1, characterized in that, The gear rolling machine further comprises a pressing assembly (4), and the pressing assembly (4) comprises a pressing motor (41) and a pressing threaded rod (42). The pressing motor (41) is arranged at the uppermost end of the support frame (11), and the output end of the pressing motor (41) is provided with a main gear (411). The pressing threaded rod (42) penetrates through the upper end of the support frame (11), and one end of the pressing threaded rod (42), close to the upper sliding box (12), is provided with a pressing block (423) located directly above the workpiece, and the other end of the pressing threaded rod (42), away from the upper sliding box (12), is sleeved with a secondary gear (421), and the secondary gear (421) and the main gear (411) are arranged in meshing relationship, and the outer side of the secondary gear (421) is provided with a gear box (422).

7. The automatic gear rolling machine for machining of a driving shaft of a vehicle according to claim 1, characterized in that, The lower end of the sliding block (121) is provided with a sliding rail (1211), and one end of the sliding rail (1211) is provided with a clamping block (1212), and the sliding block (121) is provided with a plurality of mounting blocks (1213) along the long sides of the upper sliding box (12). The upper end of the upper rack (122) is provided with a sliding groove (1221), and the sliding groove (1221) and the sliding rail (1211) are matched, and one end of the sliding groove (1221) is provided with a clamping groove (1222) matched with the clamping block (1212).

8. The automatic gear rolling machine for processing driving shaft of vehicle according to claim 7, characterized in that, One side of the upper sliding box (12) is provided with an opening (123), and the opening (123) is provided with a mounting plate (124), and the mounting plate (124) is provided with a plurality of guide rods (1241) at one end facing the opening (123), and the mounting plate (124) is bolted at the opening (123).

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