Driven gear processing device and processing technology

Abstract

The present invention relates to gear processing technology, and in particular to a driven gear processing device and processing process, including a workbench, on which a fixture and a tool bed are provided, the fixture including a chuck and a drive motor for driving the chuck to rotate, the tool bed being slidably connected to the workbench and provided with a drive assembly for controlling the tool bed, the tool bed being provided with a tool head for abutting the gear; the chuck including a chuck chuck and an expansion chuck, the chuck chuck being used to abut against one side of the gear teeth, and the expansion chuck being used to extend into the inner hole of the gear and abut against the gear.

Description

Technical Field

[0001] The present invention relates to gear processing technology, in particular to a driven gear processing device and a processing technology. Background Art

[0002] Driven gears are widely used in electronic products and automotive accessories. They are also the most important pair of gears in the drive axle transmission device. High transmission accuracy is required, so assembly, adjustment and maintenance must be carried out in accordance with the specified requirements. In order to improve the stability and service life during operation, the processing accuracy requirements of driven gears are also high.

[0003] During the machining process of the driven gear, it needs to be turned. Under the existing technology, during the turning process, the driven gear is usually clamped in a chuck for turning. However, when clamped in the chuck for machining, the side close to the gear teeth abuts against the chuck and is therefore not easily deformed during turning, while the side close to the inner hole is easily pushed by the cutter head during turning and deformed, thereby affecting the machining accuracy of the gear. Summary of the Invention

[0004] In order to solve the problem that the cutter head easily squeezes the gear when turning the gear in the prior art, causing the gear to deform and affect the processing accuracy, the present application provides a specific solution for a driven gear processing device as follows.

[0005] A driven gear processing device includes a workbench, a fixture and a tool bed provided on the workbench, the fixture including a chuck and a drive motor for driving the chuck to rotate, the tool bed being slidably connected to the workbench and provided with a drive assembly for controlling the tool bed, and the tool bed being provided with a tool head for abutting the gear;

[0006] The chuck includes a chuck chuck and an expansion chuck. The chuck chuck is used to abut against one side of the gear teeth, and the expansion chuck is used to extend into the inner hole of the gear and abut against the gear.

[0007] By adopting the above technical solution, when turning the side of the gear close to the gear teeth, a chuck is used to clamp the gear, and the side of the gear with the gear teeth abuts the chuck. After the cutter head abuts the gear, the chuck rotates to achieve turning. The cutter head has a tendency to push the gear toward the chuck during processing, but under the abutment of the chuck, the gear is not easy to deform. When turning the side of the gear close to the inner hole, an internal expansion chuck is used, and the internal expansion chuck is inserted into the inner hole of the gear and abuts the gear. The cutter head has a tendency to push the gear toward the internal expansion chuck during processing, but under the abutment of the internal expansion chuck, the gear is not easy to deform, thereby reducing the deformation of the gear due to extrusion and improving the accuracy of the gear.

[0008] Optionally, the cutter head includes a pointed cutter head and a flat cutter head, and both the pointed cutter head and the flat cutter head are used to abut against the gear.

[0009] By adopting the above technical solution, the flat cutter head has a larger contact area with the gear, which can perform preliminary cutting on the gear, with high cutting efficiency, and can complete the preliminary cutting at a faster speed. The pointed cutter head has a smaller contact area with the gear, which can perform fine cutting on the gear, and the gear can be polished after preliminary cutting to improve the turning quality.

[0010] Optionally, tool holders are provided at both ends of the tool bed, and the tool holders are detachably connected to the tool bed. The pointed tool head is detachably connected to one tool holder, and the flat tool head is detachably connected to the other tool holder.

[0011] By adopting the above technical solution, two tool holders are set on the tool bed, and the tool holders are detachably connected to the tool bed. A pointed tool head and a flat tool head are respectively arranged on the two tool holders, and the tool bed is movable. Therefore, the gear can be initially cut and then finely cut in one work, reducing the steps of replacing the tool head and improving the turning efficiency.

[0012] Optionally, the driving assembly includes a sliding rail and a movable seat, the movable seat is slidably connected to the sliding rail and the movable seat slides along the length direction of the sliding rail, the movable seat is arranged perpendicular to the sliding rail in the horizontal direction, the tool bed is slidably connected to the movable seat and the tool bed slides along the length direction of the movable seat.

[0013] By adopting the above technical solution, the movable seat can slide along the sliding rail, and the tool bed can slide along the movable seat. Since the movable seat is set perpendicular to the sliding rail, the tool bed can move on the plane and move the tool head to the corresponding position.

[0014] Optionally, the sliding rail is tilted, and the movable seat and the knife seat are also tilted along the sliding rail.

[0015] By adopting the above technical solution, the sliding rail is set at an angle. The inclined sliding rail can reduce the occupied space and improve the utilization rate of the space. During inclined cutting, the iron chips can fly out obliquely, reducing the situation where the iron chips fly directly toward the workers and reducing safety hazards.

[0016] Optionally, the angle between the sliding rail and the ground is 45 degrees.

[0017] By adopting the above technical solution, when the angle is set at 45 degrees, due to the effect of gravity, gravity acts directly on the axial direction of the cutter head, and the reverse clearance during cutting is small. In addition, the 45-degree setting makes the sliding rail more rigid and less likely to cause vibration, further improving the processing accuracy.

[0018] Optionally, a positioning rod is provided on the sliding rail, and the positioning rod is fixedly connected to the sliding rail. A positioning block is provided on the movable seat corresponding to the positioning rod, and the positioning block is used to abut against the positioning rod. When the positioning block abuts against the positioning rod, the cutter head abuts against the gear.

[0019] By adopting the above technical solution, a positioning rod is set on the sliding rail. When the cutter head is aligned with the gear, the positioning rod can assist in positioning the cutter head, thereby reducing the situation where the displacement during cutting is too large and the cutting accuracy is reduced.

[0020] Optionally, a signal piece is provided on the positioning rod, and a receiving piece is provided on the positioning block, and the driving assembly stops moving after the signal piece abuts against the contact piece.

[0021] By adopting the above technical solution, a signal piece and a receiving piece are set, and when the positioning rod contacts the positioning block, the signal is immediately transmitted to the driving component to stop the movement of the driving component, thereby reducing the situation where the positioning rod and the positioning block interfere with each other and are damaged due to the movement of the driving component.

[0022] In order to solve the problem that the cutter head easily squeezes the gear when turning the gear in the existing technology, causing the gear to deform and affect the processing accuracy, the present application provides a driven gear processing technology, and the specific solution is as follows.

[0023] A driven gear processing process includes the driven gear processing device described above and adopts the following method:

[0024] a. Install the gear to the chuck;

[0025] b. Turn the side of the gear close to the gear teeth using the flat cutter head and the pointed cutter head in sequence;

[0026] c. Remove the gear and install it on the expansion chuck;

[0027] d. Use the flat cutter head and the pointed cutter head to turn the side of the gear close to the inner hole again.

[0028] By adopting the above technical solution, the gear is turned twice in succession. When turning different positions, the gear is placed on different chucks. When processing the outer side, the outer side is restricted by the chuck, and when processing the inner side, it is restricted by the expansion chuck in the same way. Therefore, the gear deformation is reduced and the processing accuracy is improved. The flat tool head and the pointed tool head are used for coarse and fine processing to further improve the processing accuracy.

[0029] In summary, this application has at least the following beneficial effects:

[0030] 1. The present application solves the problem in the prior art that when turning gears, the cutter head is prone to squeezing the gear, causing the gear to deform and affect the processing accuracy. The present application sets a chuck collet and an external expansion collet. When the chuck collet is used to clamp the gear, the side of the gear close to the gear teeth is cut. When cutting the gear, due to the limitation of the chuck collet, the deformation of the gear toward the gear teeth is reduced. When the external expansion collet is used to clamp the gear, the side of the gear close to the inner hole is cut. Due to the limitation of the external expansion gear, the deformation of the gear toward the inner hole can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0032] Figure 2 It is a three-dimensional view of the workbench provided with a chuck collet in the first embodiment.

[0033] Figure 3 It is a three-dimensional diagram of the workbench provided with the external expansion chuck in the first embodiment.

[0034] Figure 4 It is a schematic diagram of the second embodiment.

[0035] Description of reference numerals:

[0036] 1. Workbench; 11. Drive motor; 12. Chuck; 13. Expansion chuck;

[0037] 2. Sliding rail; 21. Moving seat; 211. Positioning block; 212. Receiving piece; 22. Tool bed; 221. Tool holder; 222. Flat tool head; 223. Pointed tool head; 23. Positioning rod; 231. Signal piece. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-4 , this application is further described in detail through specific examples.

[0039] Example 1

[0040] A driven gear 3 processing device, such as Figure 1As shown, it includes two workbenches 1, and both workbenches 1 are provided with a tool bed 22 and a drive assembly. The drive assembly includes a sliding rail 2 and a movable seat 21. The sliding rail 2 is arranged along the length direction of the workbench 1. The movable seat 21 is arranged perpendicular to the sliding rail 2 in the horizontal direction. The movable seat 21 is slidably connected to the workbench 1 and slides along the length direction of the sliding rail 2. The tool bed 22 is slidably connected to the movable seat 21, and the tool bed 22 slides along the length direction of the movable seat 21. During specific implementation, a screw rod is rotatably connected to the sliding rail 2, and the movable seat 21 is threadedly connected to the screw rod. A motor is also provided on the sliding rail 2, and the rotating shaft of the motor is fixedly connected to the screw rod. After the motor rotates, it can drive the movable seat 21 to move along the sliding rail 2, and the sliding between the tool bed 22 and the movable seat 21 is also achieved in the same way.

[0041] like Figure 2 and Figure 3 As shown, a fixture is also provided on the workbench 1, and the fixture includes a chuck and a drive motor 11, wherein the chuck is rotatably connected to the workbench 1, the drive motor 11 is fixedly connected to the workbench 1, and the rotating shaft of the drive motor 11 is fixedly connected to the chuck. The chuck includes a chuck 12 and an expansion chuck 13, and the chuck 12 and the expansion chuck 13 are respectively provided on two different workbenches 1. In a specific implementation, the chuck 12 is an inwardly retracted chuck that can abut against the side of the gear 3 provided with the gear teeth, and the expansion chuck 13 is an outwardly expanding chuck that extends into the inner hole of the gear 3 and abuts against the gear 3. In other embodiments, only one workbench 1 can be provided, and the fixture provided with the chuck 12 and the fixture provided with the expansion chuck 13 are installed on the same workbench 1.

[0042] like Figure 1 and Figure 2 As shown, the slide rail 2 on the workbench 1 provided with the chuck 12 is tilted, the included angle between the slide rail 2 and the ground is 45 degrees, and the movable base 21 is also tilted along the slide rail 2. In specific implementation, the cutter head is also tilted along with the movable base 21.

[0043] like Figure 2 and Figure 3 As shown, a tool holder 221 is provided at each end of the tool bed 22, and the tool holder 221 is detachably connected to the tool bed 22. The tool head includes a sharp tool head 223 and a flat tool head 222. The sharp tool head 223 is detachably connected to one tool holder 221, while the flat tool head 222 is detachably connected to the other tool holder 221. In practice, the tool bed 22 has a sliding slot, into which the tool holder 221 is inserted and detachably connected to the tool bed 22 via bolts. The tool holder 221 can also be adjusted in its position on the tool bed 22.

[0044] like Figure 2 and Figure 3As shown, both sliding rails 2 are provided with positioning rods 23, which are fixedly connected to the sliding rails 2. A positioning block 211 is fixedly provided on the movable seat 21, and a receiving piece is wrapped on the positioning block 211, and a signal piece 231 is wrapped on the positioning rod 23. In a specific implementation, two positioning rods 23 are provided on the sliding rail 2 at the chuck 12. When the positioning block 211 abuts against the two positioning rods 23, the flat cutter head 222 and the pointed cutter head 223 can be aligned with the side of the gear 3 close to the gear teeth respectively. The external expansion chuck 13 is also set in the same way. The signal piece 231 can be an electromagnetic piece. The receiving piece receives the electromagnetic signal and transmits it to the drive assembly. When the positioning block 211 abuts against the positioning rod 23, the cutter head abuts against the gear 3, and the receiving piece stops the movement of the drive assembly after receiving the signal. In other embodiments, the signal piece 231 and the receiving piece can also be sensors to transmit signals by contact.

[0045] Working principle: The gear 3 needs to be clamped by the chuck collet 12 first, and the flat cutter head 222 and the pointed cutter head 223 are aligned with the gear 3 in turn through the cooperation of the positioning rod 23 and the positioning block 211, and the side of the gear 3 close to the gear teeth is processed. After the gear 3 is removed, it is clamped by the external expansion collet 13, and the flat cutter head 222 and the pointed cutter head 223 are aligned with the gear 3 again through the cooperation of the positioning rod 23 and the positioning block 211, and the side of the gear 3 close to the inner hole is processed. The processing can be completed after removal.

[0046] Example 2

[0047] A processing technology for the driven gear 3, such as Figure 4 As shown, the driven gear 3 processing device in the first embodiment adopts the following method:

[0048] a. Install the gear 3 to the chuck 12;

[0049] b successively by the flat cutter head 222 and the sharp cutter head 223 turning the gear 3 close to the side of the gear teeth;

[0050] c. Remove the gear 3 and install it to the expansion chuck 13;

[0051] d. The flat cutter head 222 and the sharp cutter head 223 are used to turn the side of the gear 3 close to the inner hole.

[0052] Working principle: When the gear 3 is clamped by the chuck collet 12, the side of the gear 3 close to the gear teeth is not easily deformed due to the limitation of the chuck collet 12 during processing. When the gear 3 is clamped by the external expansion collet 13, the side of the gear 3 close to the inner hole is not easily deformed due to the limitation of the external expansion collet 13 during processing, thereby improving the processing accuracy of the gear 3.

[0053] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A process for processing a driven gear, characterized by: A driven gear processing device is provided, comprising a workbench (1), wherein a fixture and a tool bed (22) are provided on the workbench (1), wherein the fixture comprises a chuck and a driving motor (11) for driving the chuck to rotate, wherein the tool bed (22) is slidably connected to the workbench (1), and a driving component for controlling the tool bed (22) is provided on the workbench (1), and wherein a tool head for abutting a gear is provided on the tool bed (22); The chuck comprises a chuck chuck (12) and an expansion chuck (13), wherein the chuck chuck (12) is used to abut against one side of the gear teeth, and the expansion chuck (13) is used to extend into the inner hole of the gear and abut against the gear; The cutter head comprises a pointed cutter head (223) and a flat cutter head (222), and both the pointed cutter head (223) and the flat cutter head (222) are used for abutting against the gear; A knife seat (221) is provided at both ends of the knife bed (22), the knife seat (221) and the knife bed (22) are detachably connected, the pointed knife head (223) is detachably connected to one knife seat (221), and the flat knife head (222) is detachably connected to the other knife seat (221); The driving assembly includes a sliding rail (2) and a moving seat (21), the moving seat (21) is slidably connected to the sliding rail (2) and the moving seat (21) slides along the length direction of the sliding rail (2), the moving seat (21) is arranged perpendicular to the sliding rail (2) in the horizontal direction, and the tool bed (22) is slidably connected to the moving seat (21) and the tool bed (22) slides along the length direction of the moving seat (21); The sliding rail (2) is arranged at an angle, and the movable seat (21) and the knife seat (221) are also arranged at an angle along the sliding rail (2); The angle between the sliding rail (2) and the ground is 45 degrees; A positioning rod (23) is provided on the sliding rail (2), and the positioning rod (23) is fixedly connected to the sliding rail (2); a positioning block (211) is provided on the movable seat (21) corresponding to the positioning rod (23); the positioning block (211) is used to abut against the positioning rod (23); when the positioning block (211) abuts against the positioning rod (23), the cutter head abuts against the gear; The positioning rod (23) is provided with a signal piece, and the positioning block (211) is provided with a receiving piece (212). When the signal piece contacts the contact piece, the driving component stops moving. Use the following method: a. Install the gear to the chuck (12); b successively by the flat cutter head (222) and the sharp cutter head (223) turning the gear close to the side of the gear teeth; c. Remove the gear and install it on the expansion chuck (13); d. The flat cutter head (222) and the sharp cutter head (223) are used again to turn the gear on the side close to the inner hole.

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