A broaching device for double-face inner step of automobile deceleration gear ring

Abstract

The application provides a broach machining device for double-face inner steps of a car deceleration gear ring, and relates to the technical field of machining of automobile parts. The device comprises a machining table, a traveling seat is arranged on the top of the machining table through sliding cooperation with a guide rail, a transmission mode is fixedly arranged on the top of the traveling seat, a transmission shaft is rotatably arranged in the middle of the transmission mode through cooperation with a bearing, a butt joint seat is integrally arranged at the front end of the transmission shaft, plug-in end heads are integrally arranged at both ends of a broach shaft, the plug-in end head at the rear end of the broach shaft is inserted into the butt joint seat, and a pin hole is arranged in the plug-in end head at the rear end. In view of the automatic problem caused by the fact that the broach and the planing step are executed by different mechanisms, the broach and the planing function are integrated in the same broach shaft system. The broach shaft can not only drive the broach machining through a straight motor, but also can realize step planing by rotating a planing groove wheel driven by a servo motor, so that the two actions do not interfere with each other, the complicated switching of multiple mechanisms is omitted, and the automatic execution efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and in particular to a broaching machine for machining double-sided inner steps on automotive reduction gear rings. Background Technology

[0002] The main function of an automotive reduction gear ring is to reduce speed and increase torque through gear meshing, thereby meeting the power output requirements of the vehicle during driving. It is usually combined with planetary gears, sun gears, etc. to form a reduction mechanism, and is widely used in automotive drive axles, transmissions, and reducers of new energy vehicles. Due to assembly requirements, internal steps are machined at the mounting positions on both sides.

[0003] A broach is a high-precision tool used in broaching operations. It mainly removes excess material from the workpiece in one pass through the relative linear motion between the tool and the workpiece (broach feed), thereby obtaining high-precision inner and outer surfaces or shaped surfaces. A broach can also be used to slot the inside of a gear ring, facilitating key connection and installation of the gear ring.

[0004] The current processing equipment uses separate mechanisms to perform the broaching and planing steps, which makes it difficult to quickly and automatically perform the broaching and planing of the internal steps and to quickly unlock the mechanism when changing workpieces. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a broaching machine for machining double-sided inner steps of automotive reduction gear rings.

[0006] This invention provides a broaching processing device for double-sided inner steps of automotive reduction gear rings, specifically including: a processing table, the top of which is slidably provided with a travel seat in conjunction with a guide rail; a transmission mold body is fixedly provided on the top of the travel seat; a transmission shaft is rotatably provided in the middle of the transmission mold body in conjunction with a bearing, and a docking seat is integrally provided at the front end of the transmission shaft; a broach shaft, both ends of which are integrally provided with plug-in ends, the plug-in end of the rear end of the broach shaft fitting into the docking seat, a pin hole is added in the rear plug-in end, and a connecting magnetic pin is inserted into the docking seat to fix the plug-in end and the docking seat; The external of the plug-in end can fit the fitting, and the fitting has an integrally integrated grooving wheel for machining the inner step of the gear ring; a tooling seat is fixedly installed on the top of the machining table, and a circular hole is opened in the middle of the tooling seat, with the center of the circular hole aligned with the drive shaft; an unlocker is fixedly installed on the front of the top of the machining table, and a transverse slide is slidably installed on the top of the unlocker in conjunction with the guide rail. Four sets of guide rods are fixedly installed on the top of the transverse slide, and locking clips are slidably installed on the outside of the four sets of guide rods; the left and right corners of the locking clip extend upwards, and the distance between the two extensions is consistent with the width of the fitting.

[0007] Optionally, a linear motor is provided below the travel seat to move above the processing table; a servo motor is fixedly provided at the rear end of the travel seat, and the rotor end of the servo motor is connected to the transmission shaft.

[0008] Optionally, bearing seats are fixedly provided at both the front and rear ends of the transmission mold, and tapered roller bearings are installed in the bearing seats. The tapered roller bearings are installed on the outside of the transmission shaft; a proximity sensor is fixedly provided inside the transmission mold.

[0009] Optionally, a trigger ring is fixedly provided on the outside of the drive shaft, and a protruding structure capable of triggering a proximity sensor is provided on the outside of the trigger ring; a limit ring is fixedly provided on the rear side of the drive shaft.

[0010] Optionally, each of the plug-in ends is provided with two sets of positioning holes, and the assembly is provided with a through hole that can be aligned with the positioning holes; a threaded pin is provided between the assembly at the rear end of the broach shaft and the positioning hole; a plug-in magnetic pin is provided between the assembly at the front end of the broach shaft and the positioning hole, and a U-shaped clip is fixedly provided on the top of each plug-in magnetic pin, with the opening of the U-shaped clip facing left.

[0011] Optionally, a positioning pin is fixedly provided around the circular hole at the front end of the tooling base; two sets of side positioners are fixedly provided on both sides of the front end of the tooling base, the two sets of side positioners are inclined, and the front end distance of the two sets of side positioners is greater than the rear end distance; an electric cylinder A is fixedly provided at the front end of each set of side positioners, and a clamping block is fixedly provided at the extension end of the electric cylinder A, and the clamping block is slidably connected to the side positioner; when the electric cylinder A retracts, the distance between the clamping blocks on both sides increases, at which time the gear ring can be picked up and put out outside the positioning pin.

[0012] Optionally, a positioning module is fixedly installed on both lower rear sides of the tooling base, and an electric cylinder B is fixedly installed in the middle of each positioning module. A U-shaped rotating frame is fixedly installed at the telescopic end of the electric cylinder B, and a guide wheel is rotatably installed in each U-shaped rotating frame. Both sets of electric cylinders B are inclined. The outer surface of the guide wheel is a concave arc structure, and the guide wheel can fit and conform to the outside of the broach shaft.

[0013] Optionally, an electric cylinder C is fixedly installed at the top center of the unlocker, and the bottom end of the transverse slide is fixedly connected to the telescopic end of the electric cylinder C. When the electric cylinder C extends, the transverse slide moves to the right.

[0014] Optionally, the top left side of the locking clip is higher than the right side, and the upper left side is an integral connection structure; an electric cylinder D is fixedly installed on the top of the transverse slide, and the telescopic end of the electric cylinder D is fixed to the bottom left of the locking clip; two sets of control inserts are integrally installed on the upper left right end of the locking clip; the right side of the control insert is rounded, and the control insert can be inserted into the U-shaped clip.

[0015] The beneficial effects are as follows:

[0016] To address the automation challenges caused by separate mechanisms for broaching and step planing, the broaching and planing functions are integrated into a single broach axis system. The broach axis can perform broaching operations via a linear motor and also perform step planing by rotating the planing wheel with a servo motor. The structure ensures that the two actions do not interfere with each other. This integrated structure eliminates the cumbersome switching between multiple mechanisms and allows the broaching and planing processes to be automatically connected through a program, significantly improving automation efficiency.

[0017] To address the inconvenience of unlocking during workpiece replacement, an automatic unlocking structure linking electric cylinders C and D is provided: the horizontal sliding block drives the locking clamp to position, controls the insertion plate to cooperate with the U-shaped clamp and the magnetic pin, and realizes the rapid locking / unlocking of the assembly and the broach shaft. With the help of the positioning stake, the positioning accuracy is guaranteed. Compared with the traditional multi-mechanism step-by-step unlocking, this mechanism centralizes and automates the unlocking action, significantly shortening the auxiliary time for workpiece replacement.

[0018] A unified transmission reference improves machining stability and accuracy. Since the broach and planer share the same transmission shaft and broach shaft, machining errors caused by reference deviations between different mechanisms are avoided. At the same time, the design of guide wheel support and sensor reset further ensures the stability of the broach and the positional accuracy of the planer, solving the dimensional deviation problem that is prone to occur when multiple mechanisms are processed together, and improving product consistency. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown;

[0020] Figure 2 A schematic diagram of the axial structure of an embodiment of the present invention is shown;

[0021] Figure 3 A three-dimensional cross-sectional view of an embodiment of the present invention is shown;

[0022] Figure 4 A side sectional view of the transmission module in an embodiment of the present invention is shown;

[0023] Figure 5 A schematic diagram of the front structure of the tooling base in an embodiment of the present invention is shown;

[0024] Figure 6 A schematic diagram of the rear structure of the tooling base in an embodiment of the present invention is shown;

[0025] Figure 7 A schematic diagram of the initial state structure of the unlocker in an embodiment of the present invention is shown;

[0026] Figure 8 A schematic diagram of the docking state structure of the unlocker in an embodiment of the present invention is shown;

[0027] Figure 9 A schematic diagram of the unlocking state structure of the unlocker in an embodiment of the present invention is shown.

[0028] List of reference numerals in the attached diagram:

[0029] 1. Machining table; 2. Traveling seat; 201. Servo motor; 3. Transmission module; 301. Bearing housing; 302. Proximity sensor; 4. Drive shaft; 401. Trigger ring; 402. Docking seat; 403. Limiting ring; 5. Connecting magnetic pin; 6. Broach shaft; 601. Insertion end; 602. Positioning hole; 603. Assembly kit; 604. Grooving wheel; 605. Insertion magnetic pin; 606. U-shaped clamp; 7. Tooling base; 701. Positioning pin; 702. Side positioner; 703. Electric cylinder A; 704. Clamping block; 705. Positioning module; 706. Electric cylinder B; 707. U-shaped rotating frame; 708. Guide wheel; 8. Unlocker; 801. Electric cylinder C; 802. Lateral slide; 803. Guide rod; 804. Locking clamp; 805. Positioning stake; 806. Electric cylinder D; 807. Control insert. Detailed Implementation

[0030] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0031] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 9 As shown:

[0032] This invention proposes a broaching machine for double-sided internal steps of automotive reduction gear rings, comprising: a machining table 1, a traveling seat 2 slidably mounted on the top of the machining table 1 in conjunction with a guide rail; a transmission mold 3 fixedly mounted on the top of the traveling seat 2; a transmission shaft 4 rotatably mounted in the middle of the transmission mold 3 in conjunction with a bearing, and a docking seat 402 integrally mounted at the front end of the transmission shaft 4; a broach shaft 6, with insertion ends 601 integrally mounted at both ends of the broach shaft 6, the insertion end 601 at the rear end of the broach shaft 6 fitting into the docking seat 402, a pin hole added in the rear insertion end 601, and a connecting magnetic pin 5 inserted in the docking seat 402 to fix the insertion end 601 and the docking seat 402; the insertion end 601... The external part of 01 can fit the fitting 603. The fitting 603 has an integral grooving wheel 604 for machining the inner step of the gear ring. The top of the machining table 1 is fixedly equipped with a tooling seat 7. The tooling seat 7 has a round hole in the middle, and the center of the round hole is aligned with the drive shaft 4. The top front of the machining table 1 is fixedly equipped with an unlocker 8. The top of the unlocker 8 is slidably equipped with a transverse slide 802 in cooperation with the guide rail. The top of the transverse slide 802 is fixedly equipped with four sets of guide rods 803. The four sets of guide rods 803 are slidably equipped with locking clips 804. The left and right corners of the locking clip 804 extend upwards, and the distance between the two extensions is the same as the width of the fitting 603.

[0033] Among them, a linear motor is installed below the travel seat 2 to move above the processing table 1; a servo motor 201 is fixedly installed at the rear end of the travel seat 2, and the rotor end of the servo motor 201 is connected to the transmission shaft 4 for transmission.

[0034] The transmission mold 3 is equipped with bearing seats 301 at both the front and rear ends, and tapered roller bearings are installed inside the bearing seats 301. The tapered roller bearings are installed on the outside of the transmission shaft 4. A proximity sensor 302 is fixedly installed inside the transmission mold 3.

[0035] A trigger ring 401 is fixedly installed on the outside of the drive shaft 4, and a protruding structure capable of triggering the proximity sensor 302 is provided on the outside of the trigger ring 401; a limit ring 403 is fixedly installed on the rear side of the drive shaft 4.

[0036] The connector 601 has two sets of positioning holes 602, and the mounting 603 has a through hole that can be aligned with the positioning holes 602. The mounting 603 at the rear end of the broach shaft 6 is fixed with the positioning hole 602 by a threaded pin. The mounting 603 at the front end of the broach shaft 6 is fixed with the positioning hole 602 by a magnetic pin 605. The top of the magnetic pin 605 is fixed with a U-shaped clip 606, and the opening of the U-shaped clip 606 faces left.

[0037] The tooling base 7 has a positioning pin 701 fixedly installed around the circular hole at its front end; two sets of side positioners 702 are fixedly installed on both sides of the front end of the tooling base 7, and the two sets of side positioners 702 are inclined, with the front end gap of the two sets of side positioners 702 being greater than the rear end gap; an electric cylinder A703 is fixedly installed at the front end of each set of side positioners 702, and a clamping block 704 is fixedly installed at the telescopic end of the electric cylinder A703, and the clamping block 704 is slidably connected to the side positioner 702; when the electric cylinder A703 retracts, the gap between the two clamping blocks 704 increases, at which time the gear ring can be picked up and put out outside the positioning pin 701.

[0038] The tooling base 7 has a positioning module 705 fixedly installed on both sides of the rear. An electric cylinder B706 is fixedly installed in the middle of the positioning module 705. A U-shaped rotating frame 707 is fixedly installed at the telescopic end of the electric cylinder B706. A guide wheel 708 is rotatably installed in the U-shaped rotating frame 707. Both sets of electric cylinders B706 are inclined. The guide wheel 708 has a concave arc structure on the outside. The guide wheel 708 can fit and conform to the outside of the broach shaft 6.

[0039] Among them, the top center of the unlocker 8 is fixedly equipped with an electric cylinder C801, and the bottom end of the transverse slide 802 is fixedly connected to the telescopic end of the electric cylinder C801. When the electric cylinder C801 extends, the transverse slide 802 moves to the right.

[0040] Among them, the top left side of the locking clip 804 is higher than the right side, and the upper left side is an integral connection structure; the top of the transverse slide 802 is fixedly equipped with an electric cylinder D806, and the telescopic end of the electric cylinder D806 is fixed to the bottom of the upper left side of the locking clip 804; two sets of control inserts 807 are integrally provided on the upper left right side of the locking clip 804; the right side of the control insert 807 is rounded, and the control insert 807 can be inserted into the U-shaped clip 606.

[0041] The machining process for automotive reduction gear rings can be divided into the following steps, and except for manual handling of the gear rings, all other steps are performed automatically:

[0042] The gear ring is installed outside the positioning pin 701. By controlling the extension of the two sets of electric cylinders A703, the clamping blocks 704 on both sides are moved, and the clamping blocks 704 are used to support and fix the gear ring.

[0043] Move the travel seat 2 forward so that the broach shaft 6 passes through the gear ring, and then install the front end fitting 603;

[0044] The broaching shaft 6 adopts a broaching assembly with a higher front and lower rear. When broaching, the linear motor drives the travel seat 2 to move backward, and the transmission mold body 3 and the transmission shaft 4 move in sync, pulling the broaching shaft 6 backward to complete the broaching machining of the gear keyway.

[0045] During the broaching process, the electric cylinder B706 extends, pushing the U-shaped rotating frame 707 and the guide wheel 708 to fit against the broach shaft 6, enhancing the support force to ensure machining stability.

[0046] Example 2: Stepped structure planing. Utilizing the back-and-forth movement of the broach shaft 6 within the gear ring, two sets of planing wheels 604 are used to plan the steps on both sides of the gear ring.

[0047] The grooving wheel 604 is moved to fit the gear ring, and the servo motor 201 is started to drive the transmission shaft 4 to rotate, which in turn drives the broach shaft 6 to rotate (at this time, the broach structure is disengaged from the gear ring and does not interfere with the movement; electronic components for counting or controlling the movement can be set as needed to assist in the control and monitoring of the execution of this step).

[0048] The broach shaft 6 drives the assembly 603 and the grooving wheel 604 to rotate, completing the planing operation.

[0049] Example 3: The broaching shaft 6 is reset. Through the sensing between the proximity sensor 302 and the trigger ring 401, the control program causes the servo motor 201 to automatically reset, and the broaching shaft 6 returns to its original position. Figure 3 Status; at the same time, the traveling seat 2 moves backward, so that the front end assembly 603 aligns with the locking clip 804.

[0050] Automatic unlocking: Electric cylinder C801 drives the transverse slide 802 to move, so that the locking clip 804 fits against the outside of the fitting 603, and the control insert 807 is inserted into the U-shaped clip 606; Electric cylinder D806 raises the control insert 807, which drives the U-shaped clip 606 and the insertion magnetic pin 605 to rise, unlocking the fitting 603 and the insertion end 601, and the positioning stake 805 is inserted into the hole below the fitting 603 for positioning.

[0051] When replacing the gear ring, the broach shaft 6 moves backward, pulls out the plug end 601 and exits from the gear ring; the electric cylinder A703 resets, the clamp 704 is released, the old gear ring is removed and the new gear ring is installed.

[0052] Preparation for machining new gear ring:

[0053] After installing the new gear ring, the broach shaft 6 moves forward, the electric cylinder D806 retracts, and the control plate 807 presses the U-shaped clamp 606, so that the insertion magnetic pin 605 is inserted into the front positioning hole 602, fixing the grooving wheel 604. The stepped structure can then be machined again by moving and rotating the grooving wheel 604.

[0054] The specific usage and function of this embodiment: In this invention, when in use, the car deceleration gear ring is installed on the outside of the positioning pin 701, the two sets of electric cylinders A703 are controlled to extend, and the electric cylinders A703 are used to push the two clamping blocks 704 on both sides to move, and the gear ring is fixed by the clamping blocks 704.

[0055] Then move the travel seat 2 forward to pass the broach shaft 6 through the gear ring, and then install the front-end fitting 603;

[0056] The broach shaft 6 adopts a broach assembly with a high front and low rear. When broaching, the linear motor moves the travel seat 2 backward, the transmission mold body 3 moves backward synchronously, and then the transmission shaft 4 pulls the broach shaft 6 backward synchronously to perform broaching and open gear keyways.

[0057] During the broaching process, the electric cylinder B706 extends to push the U-shaped rotating frame 707 and the guide wheel 708, and the guide wheel 708 is brought into contact with the broach shaft 6. This can increase the support force during the broaching process, ensure the broaching effect, and achieve stable broaching processing.

[0058] The broach shaft 6 can move back and forth inside the gear ring, so two sets of grooving wheels 604 can be used to plan the stepped structure on both sides of the gear ring; control the movement of the grooving wheels 604, when the grooving wheels 604 are in contact with the gear ring, directly start the servo motor 201 to drive the transmission shaft 4 to rotate. During the rotation of the transmission shaft 4, the broach shaft 6 is driven to rotate. At this time, the broach structure of the broach shaft 6 is separated from the gear ring, which does not affect the movement. The broach shaft 6 drives the assembly 603 and the grooving wheels 604 to rotate, and the grooving wheels 604 plan the gear ring;

[0059] After machining is completed, the broaching shaft 6 is reset. Through the sensing between the proximity sensor 302 and the trigger ring 401, the control program automatically resets the servo motor 201, restoring the broaching shaft 6 to its original position. Figure 3 The state; at the same time, the traveling seat 2 will be moved backward so that the front assembly 603 is aligned with the locking clip 804;

[0060] At this point, automatic unlocking is initiated. The electric cylinder C801 is activated to move the transverse slide 802, moving the locking clip 804 to the outside of the front mounting 603 for engagement. At this time, the control insert 807 is inserted into the U-shaped clip 606. The electric cylinder D806 is activated to raise the control insert 807, which in turn raises the U-shaped clip 606 and the magnetic pin 605, unlocking the mounting 603 and the insertion end 601. The positioning post 805 is inserted into the hole below the mounting 603 to maintain positioning.

[0061] Then move the broach shaft 6 backward to pull out the front plug end 601 and install the matching 603. At this time, the broach shaft 6 can be pulled out from the gear ring by continuing to move backward. Reset the electric cylinder A703, release the two sets of clamping blocks 704, and the gear ring can be removed for replacement. After installing the new gear ring, it can be processed again.

[0062] After installing the new gear ring, move the broach shaft 6 forward again, retract the electric cylinder D806 and use the control insert 807 to press the U-shaped clamp 606 to insert the magnetic pin 605 into the front positioning hole 602, which will fix the front grooving wheel 604. At this time, the stepped structure can be machined on the gear ring again by moving and rotating the two sets of grooving wheels 604.

[0063] The toothed ring can be manually removed and placed at the locating pin 701; all other steps are performed automatically.

Claims

1. A broaching apparatus for double-sided inner step of a car reduction gear ring, characterized in that, Include: Processing platform (1), the top of the processing platform (1) is slidably provided with a traveling seat (2) matched with a guide rail; the top of the traveling seat (2) is fixedly provided with a transmission mode body (3); the middle of the transmission mode body (3) is rotatably provided with a transmission shaft (4) matched with a bearing; the front end of the transmission shaft (4) is integrally provided with a docking seat (402); the both ends of a broach shaft (6) are integrally provided with plug-in end heads (601), the plug-in end head (601) at the rear end of the broach shaft (6) is snugly inserted into the docking seat (402), a pin hole is additionally arranged in the rear end plug-in end head (601), a connecting magnetic pin (5) is inserted into the docking seat (402) to fix the plug-in end head (601) and the docking seat (402); an assembling sleeve (603) can be snugly sleeved on the outside of the plug-in end head (601), a planing groove wheel (604) for processing a gear ring inner step is integrally arranged in the middle of the outside of the assembling sleeve (603); the top of the processing platform (1) is fixedly provided with a tool holder (7), a circular hole is formed in the middle of the tool holder (7), the center of the circular hole is aligned with the transmission shaft (4); the top of the front side of the processing platform (1) is fixedly provided with an unlocker (8), the top of the unlocker (8) is slidably provided with a transverse sliding seat (802) matched with a guide rail, the top of the transverse sliding seat (802) is fixedly provided with four groups of guide rods (803), the four groups of guide rods (803) are slidably provided with locking clamps (804) outside; the left and right corners of the locking clamps (804) are both upwardly extended, the distance between the two side extensions is consistent with the width of the assembling sleeve (603).

2. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 1, wherein The straight motor below the traveling seat (2) moves above the processing platform (1); the rear end of the traveling seat (2) is fixedly provided with a servo motor (201), the rotor end of the servo motor (201) is in transmission connection with the transmission shaft (4).

3. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 1, wherein The front and rear ends of the transmission mode body (3) are both fixedly provided with bearing seats (301), a tapered roller bearing is installed in each of the bearing seats (301), and the tapered roller bearings are installed outside the transmission shaft (4); the inside of the transmission mode body (3) is fixedly provided with a proximity sensor (302).

4. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 3, wherein The outside of the transmission shaft (4) is fixedly provided with a trigger ring (401), the outside of the trigger ring (401) is provided with a convex structure capable of triggering the proximity sensor (302); the outside of the rear side of the transmission shaft (4) is fixedly provided with a limiting ring (403).

5. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 1, wherein Two groups of positioning holes (602) are formed in the plug-in end head (601), a through hole capable of being aligned with the positioning holes (602) is formed in the outside of the assembling sleeve (603); a threaded pin is arranged between the assembling sleeve (603) at the rear end of the broach shaft (6) and the positioning holes (602) for fixation; a plug-in magnetic pin (605) is arranged between the assembling sleeve (603) at the front end of the broach shaft (6) and the positioning holes (602) for fixation, a U-shaped clamp (606) is fixedly arranged at the top of the plug-in magnetic pin (605), and the opening of the U-shaped clamp (606) faces left.

6. The broaching apparatus for double-sided internal step of automotive reduction gear ring of claim 1, wherein The front end of the tool seat (7) is fixedly provided with a positioning pin (701) around a circular hole; two groups of side positioners (702) are fixedly arranged on the two sides of the front end of the tool seat (7), and the two groups of side positioners (702) are arranged obliquely, and the front end interval of the two groups of side positioners (702) is greater than the rear end interval; the front end of the two groups of side positioners (702) is fixedly provided with an electric cylinder A (703), and the telescopic end of the electric cylinder A (703) is fixedly provided with a clamping block (704), and the clamping block (704) is slidably connected with the side positioner (702); when the electric cylinder A (703) is retracted, the interval of the two clamping blocks (704) is increased, and at this time, the gear ring can be taken out and placed outside the positioning pin (701).

7. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 1, wherein The rear part of the tool seat (7) is fixedly provided with a positioning module (705) on the lower side of each side, and the positioning module (705) is fixedly provided with an electric cylinder B (706) in the middle, and the telescopic end of the electric cylinder B (706) is fixedly provided with a U-shaped rotating frame (707), and the U-shaped rotating frame (707) is rotatably provided with a guide wheel (708); the two groups of electric cylinders B (706) are arranged obliquely; the outer part of the guide wheel (708) is a concave arc structure, and the guide wheel (708) can be fitted on the outer part of the broach shaft (6).

8. The broaching apparatus for double-sided inner step of automotive reduction gear ring of claim 5, wherein The top of the unlocking device (8) is fixedly provided with an electric cylinder C (801), and the bottom end of the transverse sliding seat (802) is fixedly connected with the telescopic end of the electric cylinder C (801), and when the electric cylinder C (801) is stretched, the transverse sliding seat (802) moves to the right.

9. The broaching equipment for machining double-sided inner steps of an automotive reduction gear ring as described in claim 8, characterized in that, The top left side of the locking clamp (804) is higher than the right side, and the upper left side is an integral connection structure; the top of the transverse sliding seat (802) is fixedly provided with an electric cylinder D (806), and the telescopic end of the electric cylinder D (806) is fixedly arranged on the upper left side of the locking clamp (804); the right end of the upper left side of the locking clamp (804) is integrally provided with two groups of control inserts (807); the right end side of the control insert (807) is rounded, and the control insert (807) can be fitted into the U-shaped clamp (606).

Images