Special-shaped gear machining tooling

Abstract

This utility model discloses a tooling for machining irregularly shaped gears, relating to the field of gear machining technology. It includes: a rotating mechanism for driving a supporting and fixing mechanism to rotate; a supporting and fixing mechanism for supporting and fixing the irregularly shaped gear from the inside; and a repositionable support mechanism, which includes multiple guide grooves evenly spaced at the bottom of the outer side of a sleeve, with a limiting groove formed in the middle of the inner side of any one of the guide grooves. This utility model can support the irregularly shaped gear before and after fixing, facilitating one-handed operation by the operator. In practical use, it is more convenient. Furthermore, after the support rod moves down to avoid obstructing the machining tool during the machining process, it ensures the smooth progress of the irregularly shaped gear machining process.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a tooling for processing irregularly shaped gears. Background Technology

[0002] Special-shaped gears are gears with special tooth profiles, structures, or transmission characteristics compared to standard involute gears (such as common cylindrical gears and bevel gears). The core is to meet specific mechanical transmission requirements through non-standard design.

[0003] To facilitate the machining of irregularly shaped gears using specialized cutting tools, a fixture is needed to fix the gear from the inside before machining begins. This prevents the gear from shifting during machining and affecting machining accuracy. For example, the fixture disclosed in utility model patent CN221658154U can fix the irregularly shaped gear, but after the gear is fitted onto multiple limiting plates, it needs to be continuously lifted until the multiple limiting plates support and fix the gear from the inside. Similarly, after machining is completed, to prevent the gear from falling off directly after being unsecured, it is also necessary to keep the gear in a holding position during the unlocking process. This makes it impossible to operate with one hand, which is too inconvenient in actual use.

[0004] Therefore, it is necessary to invent a special-shaped gear machining tool to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for machining irregularly shaped gears, which can support the irregularly shaped gears before and after fixing them, thereby facilitating one-handed operation by the operator. This makes it more convenient in actual use. Furthermore, the support rod can detach from the bottom of the irregularly shaped gear after moving downwards to avoid obstructing the machining tool during processing, ensuring the smooth progress of the machining process. This solves the problem mentioned in the background art, where after the irregularly shaped gear is fitted onto multiple limiting plates, it is necessary to continuously pick up and drop the gear until the multiple limiting plates support and fix it from the inside. Similarly, after subsequent processing, to prevent the irregularly shaped gear from falling directly after being unfixed, it is also necessary to maintain the state of picking up the gear during the unlocking process, making one-handed operation impossible and inconvenient in actual use.

[0006] According to one aspect of this disclosure, the following technical solution is provided: a tooling for machining irregularly shaped gears, comprising:

[0007] A rotating mechanism, which drives the supporting and fixing mechanism to rotate;

[0008] A support and fixing mechanism is provided for supporting and fixing the gear by the inner side of the shaped gear; and

[0009] The avoidable support mechanism includes multiple guide grooves evenly spaced on the bottom of the outer side of the sleeve. Each guide groove has a limiting groove in its inner center. The avoidable support mechanism also includes a lifting block that slides vertically on the inner side of the sleeve. A return spring that fits against the top of the rotating disk is fixedly connected to the bottom of the lifting block. Multiple support rods that slide vertically on the inner side of adjacent guide grooves and are adapted to adjacent limiting grooves are evenly fixedly arranged on the outer side of the return spring. An operating ring is fixedly connected to the outer side of the multiple support rods.

[0010] According to at least one embodiment of the irregular gear machining fixture of the present disclosure, the rotating mechanism includes a fixed frame, and a fixed base plate is fixedly disposed at the bottom of the fixed frame.

[0011] According to at least one embodiment of the irregular gear machining fixture of the present disclosure, a rotating disk is rotatably nested on the top of the fixed frame via a bearing, a servo motor is fixedly mounted on the top of the fixed base plate, and the output shaft of the servo motor passes through the fixed frame and is fixedly connected to the rotating disk.

[0012] According to at least one embodiment of the irregular gear machining fixture of the present disclosure, the support and fixing mechanism includes a sleeve fixedly disposed on the top of the rotary disk, and a fixing block is fixedly disposed on the top inner side of the sleeve.

[0013] According to at least one embodiment of the irregular gear machining fixture of the present disclosure, a locking bolt is provided through the right side of the fixing block, and the locking bolt passes through the sleeve and is threadedly connected to the fixing block.

[0014] According to at least one embodiment of the irregular gear machining fixture of the present disclosure, the left end of the locking bolt is provided with a support plate through a bearing, and the bottom right side of the support plate is fixedly provided with a guide shaft that slides through the sleeve.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This invention features a repositionable support mechanism. When the irregularly shaped gear is fitted onto the sleeve and the outside of the support plate for fixing, multiple support rods support the gear from below. After the gear is fixed using the support and fixing mechanism, the operating ring presses the support rods downwards. During this process, the lifting block compresses the return spring. Once the support rods move to the level of the adjacent limiting groove, the operating ring rotates the support rods, causing them to enter the limiting groove and be limited. At this point, the support rods detach from the bottom of the irregularly shaped gear. Compared to existing technologies, this invention supports the irregularly shaped gear before fixing and when releasing it, facilitating one-handed operation. Furthermore, the support rods detach from the bottom of the gear after moving downwards to avoid obstructing the machining tool during processing, ensuring smooth machining of the irregularly shaped gear. Attached Figure Description

[0017] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0018] Figure 1 This is a schematic diagram of the overall structure of a non-standard gear machining fixture according to one embodiment of the present disclosure.

[0019] Figure 2 This is a schematic diagram of the rotating mechanism and the supporting and fixing mechanism of a non-shaped gear machining fixture according to one embodiment of the present disclosure.

[0020] Figure 3 This is a schematic diagram of an avoidable support mechanism for a non-circular gear machining fixture according to one embodiment of the present disclosure.

[0021] The specific labels in the attached figures are as follows:

[0022] 1. Rotating mechanism; 11. Fixed frame; 12. Fixed base plate; 13. Rotating disk; 14. Servo motor;

[0023] 2. Support and fixing mechanism; 21. Sleeve; 22. Fixing block; 23. Locking bolt; 24. Support plate; 25. Guide shaft;

[0024] 3. Able to avoid support mechanism; 31. Guide groove; 32. Limiting groove; 33. Lifting block; 34. Return spring; 35. Support rod; 36. Operating ring. Detailed Implementation

[0025] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0026] Figure 1 This is a schematic diagram of the overall structure of a non-standard gear machining fixture according to one embodiment of the present disclosure.

[0027] Figure 2 This is a schematic diagram of the rotating mechanism 1 and the supporting and fixing mechanism 2 of a non-shaped gear machining fixture according to one embodiment of the present disclosure.

[0028] Figure 3 This is a schematic diagram of the avoidable support mechanism 3 of a non-circular gear machining fixture according to one embodiment of the present disclosure.

[0029] like Figures 1-3 As shown, the special-shaped gear machining fixture disclosed herein may include components such as a rotating mechanism 1, a supporting and fixing mechanism 2, and an avoidable support mechanism 3.

[0030] like Figure 2 As shown in this disclosure, the rotating mechanism 1 includes a fixed frame 11, and a fixed base plate 12 is fixedly installed at the bottom of the fixed frame 11. Both are made of Q235 low carbon steel plate and have 4 mounting holes at the bottom. It can be fixed to the machine tool worktable by expansion bolts to ensure the overall stability of the tooling. A rotating disk 13 is nested on the top of the fixed frame 11 through a bearing. It is made of 45 steel and heat treated. A servo motor 14 is fixedly installed on the top of the fixed base plate 12. A 57 series stepper servo motor (model 57HS22) is selected. The output shaft of the servo motor 14 passes through the fixed frame 11 and is fixedly connected to the rotating disk 13. A Φ20mm bushing is welded to the center of the bottom of the rotating disk 13. The bushing is connected to the output shaft of the servo motor 14 by a key (key specification 6×10mm) to ensure that the power transmission is slip-free.

[0031] Therefore, after the irregular gear is fixed by the support and fixing mechanism 2, the servo motor 14 can drive the rotating disk 13 to rotate, and then the rotating disk 13 can drive the irregular gear to rotate through the support and fixing mechanism 2, so as to adjust the processing position of the irregular gear.

[0032] like Figure 2 As shown, in a preferred embodiment, the support and fixing mechanism 2 includes a sleeve 21 fixedly mounted on the top of the rotating disk 13, which is made of 45# steel seamless tube. A fixing block 22 is fixedly mounted on the top inner side of the sleeve 21. An M12 fine thread hole (pitch 1.25mm) is opened in the center of the fixing block 22. The fine thread can enhance the self-locking property and prevent the locking bolt 23 from loosening due to processing vibration. A locking bolt 23 is provided through the right side of the fixing block 22. The locking bolt 23 is made of 40Cr alloy steel and galvanized for rust prevention. The locking bolt 23 passes through the sleeve 21 and is threadedly connected to the fixing block 22. A support plate 24 is provided on the left end of the locking bolt 23 through a bearing. A guide shaft 25 that slides through the sleeve 21 is fixedly mounted on the bottom right side of the support plate 24.

[0033] Therefore, after the shaped gear is fitted onto the outside of the sleeve 21 and the support plate 24, the locking bolt 23 can be rotated using a tool, thereby causing the locking bolt 23 to drive the support plate 24, which is guided by the guide shaft 25, to move continuously to the left. During this process, the support plate 24 first contacts the inner wall of the shaped gear, and then pushes the shaped gear to the left through the inner wall of the shaped gear until the inner wall of the shaped gear contacts the right side of the sleeve 21. At this time, the support plate 24, together with the sleeve 21, completes the support and fixation of the shaped gear from the inside of the shaped gear, thereby preventing the shaped gear from shifting during subsequent processing.

[0034] like Figure 3 As shown in this disclosure, the avoidable support mechanism 3 includes multiple guide grooves 31 evenly distributed on the bottom outer side of the sleeve 21. Each guide groove 31 has a limiting groove 32 in its inner center. The avoidable support mechanism 3 also includes a lifting block 33 slidably disposed vertically on the inner side of the sleeve 21. Made of nylon 66, it possesses both rigidity and wear resistance, is cylindrical, and has a transitional fit with the inner wall of the sleeve 21. It can slide vertically along the sleeve 21 to prevent wobbling. A return spring 34, made of 65Mn spring steel, is fixedly connected to the bottom of the lifting block 33 and adheres to the top of the rotating disk 13. The winding process has an initial pre-compression of 10mm and a maximum compression of 20mm during operation, providing a reset force of 80-100N to ensure that the support rod 35 can move stably upward. Multiple support rods 35 are evenly fixed on the outside of the reset spring 34, which are slidably arranged in the vertical direction inside the adjacent guide groove 31 and adapted to the adjacent limiting groove 32. The outer sides of the multiple support rods 35 are all fixedly connected to the operating ring 36, which is made of 6061 aluminum alloy. The outer side of the ring is knurled to increase the friction of the hand and facilitate pressing and rotating operations. The surface is anodized to improve corrosion resistance and feel.

[0035] Therefore, when the irregular gear is sleeved on the outside of the sleeve 21 and the support plate 24 and is waiting to be fixed, multiple support rods 35 support the irregular gear from below. After the irregular gear is fixed by the support and fixing mechanism 2, the multiple support rods 35 are pressed down by the operating ring 36. During this process, the lifting block 33 compresses the return spring 34. After the multiple support rods 35 move to be horizontal with the adjacent limiting groove 32, the operating ring 36 drives the multiple support rods 35 to rotate, thereby causing the multiple support rods 35 to enter the inner side of the multiple limiting grooves 32 and be limited. At this time, the multiple support rods 35 are all supported by the irregular gear. After the bottom is detached and the processing is completed, the operating ring 36 is rotated in the opposite direction, which in turn drives multiple support rods 35 to disengage from multiple limiting grooves 32. At this time, the compressed return spring 34 drives multiple support rods 35 to move upward and reset through the lifting block 33. Compared with the prior art, this utility model can support the irregular gear before it is fixed and when it is unfixed, which makes it easier for the operator to operate with one hand. It is more convenient in actual use. In addition, after the support rods 35 move down to avoid obstructing the processing tool during the processing of the irregular gear, it ensures the smooth progress of the processing of the irregular gear.

[0036] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0037] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A profile gear machining tooling, characterized by, include: A rotating mechanism, which drives the supporting and fixing mechanism to rotate; A support and fixing mechanism is provided for supporting and fixing the gear by the inner side of the shaped gear; and The avoidable support mechanism includes multiple guide grooves evenly spaced on the bottom of the outer side of the sleeve. Each guide groove has a limiting groove in its inner center. The avoidable support mechanism also includes a lifting block that slides vertically on the inner side of the sleeve. A return spring that fits against the top of the rotating disk is fixedly connected to the bottom of the lifting block. Multiple support rods that slide vertically on the inner side of adjacent guide grooves and are adapted to adjacent limiting grooves are evenly fixedly arranged on the outer side of the return spring. An operating ring is fixedly connected to the outer side of the multiple support rods.

2. The tooling for machining irregularly shaped gears according to claim 1, characterized in that: The rotating mechanism includes a fixed frame, and a fixed base plate is fixedly installed at the bottom of the fixed frame.

3. The profile gear machining tooling fixture of claim 2, wherein: A rotating disk is nested on the top of the fixed frame via a bearing, and a servo motor is fixedly mounted on the top of the fixed base plate. The output shaft of the servo motor passes through the fixed frame and is fixedly connected to the rotating disk.

4. The profile gear machining tooling fixture of claim 3, wherein: The support and fixing mechanism includes a sleeve fixedly installed on the top of the rotating disk, and a fixing block is fixedly installed on the top inner side of the sleeve.

5. The tooling for machining irregularly shaped gears according to claim 4, characterized in that: A locking bolt is provided through the right side of the fixing block, and the locking bolt passes through the sleeve and is threadedly connected to the fixing block.

6. The tooling for machining irregularly shaped gears according to claim 5, characterized in that: The left end of the locking bolt is fitted with a support plate via a bearing, and a guide shaft for sliding through the sleeve is fixedly installed at the bottom right side of the support plate.

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