A machining fixture for cycloidal wheels

Abstract

This utility model relates to the field of machining fixture technology, and proposes a machining fixture for a cycloidal wheel, including a machining table, a base, a top pressing mechanism, and a side pressing mechanism. The base is fixedly mounted on the machining table and has a threaded hole. The top pressing mechanism includes a pressure block and a fixing bolt, with the pressure block and the base respectively abutting against both sides of the cycloidal wheel. The fixing bolt passes through the center hole of the pressure block and the cycloidal wheel, and is threadedly connected within the threaded hole. The side pressing mechanism is fixedly mounted on the machining table and abuts against the circumference of the cycloidal wheel. This utility model, by setting up a side pressing mechanism to abut against the circumference of the cycloidal wheel, can improve the fixing firmness of the cycloidal wheel and ensure the machining accuracy of the cycloidal wheel. By setting the top pressing mechanism to include a pressure block and a fixing bolt, the cycloidal wheel can be quickly disassembled and rotated, improving the practicality of the fixture.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, and in particular to a machining fixture for a cycloidal wheel. Background Technology

[0002] Cycloidal wheels, as precision transmission components with advantages such as compact structure, small size, and high speed ratio, are widely used in various mechanical equipment. Their unique cycloidal tooth profile design not only improves transmission smoothness and efficiency but also significantly reduces noise and vibration. However, the high precision requirements of cycloidal wheels also present challenges to their machining process. Especially in the machining of critical parts such as the end face and pin hole of the cycloidal wheel, extremely high machining accuracy and stability must be ensured to meet the overall performance requirements of the equipment.

[0003] In the machining process of cycloidal wheels, the design and use of fixtures play a crucial role. Fixtures not only need to be able to stably hold the cycloidal wheel to prevent it from moving or deforming during machining, but also need to have the ability to clamp and position quickly and accurately to improve machining efficiency and product quality.

[0004] Chinese patent application CN111673493A discloses a cycloidal wheel boring fixture, which is equipped with jaws and clamping blocks. The jaws are rotated by the movement of a driver and a first pull rod to clamp the cycloidal wheel. However, in this technical solution, the jaws only clamp the end face of the cycloidal wheel. The cycloidal wheel will rotate under external force during the machining process, affecting the machining accuracy of the cycloidal wheel. Utility Model Content

[0005] In view of this, the present invention proposes a machining fixture for cycloidal wheels, which can improve the fixing firmness of cycloidal wheels and ensure the machining accuracy of cycloidal wheels.

[0006] The technical solution of this utility model is achieved as follows: This utility model provides a machining fixture for a cycloidal wheel, including a machining table, a base, a top pressing mechanism, and a side pressing mechanism, wherein, The base is fixedly mounted on the processing table, and the base has a threaded hole. The pressing mechanism includes a pressing block and a fixing bolt. The pressing block and the base are respectively abutted against both sides of the cycloidal wheel. The fixing bolt passes through the central hole of the pressing block and the cycloidal wheel and is connected to the threaded hole by a threaded engagement. The side pressure mechanism is fixedly mounted on the processing table and abuts against the circumference of the cycloidal wheel.

[0007] Based on the above technical solutions, preferably, the side pressure mechanism includes a telescopic cylinder and a locking block, wherein, The telescopic cylinder is fixedly mounted on the processing table; The locking block is fixedly mounted on the output end of the telescopic cylinder and abuts against the circumference of the cycloidal wheel.

[0008] More preferably, both the base and the top pressing mechanism are provided with multiple components.

[0009] More preferably, the locking block abuts against the circumference of the cycloidal wheels on at least two of the bases.

[0010] More preferably, the side pressure mechanism further includes a pin, which is fixedly disposed on the output end of the telescopic cylinder and engages with the through hole of the cycloidal wheel.

[0011] More preferably, the side-pressing mechanism further includes a limiting seat and a limiting shaft, wherein, The limiting seat is fixedly mounted on the processing table; The limiting shaft is fixedly mounted on the output end of the telescopic cylinder and is slidably connected to the limiting seat.

[0012] Based on the above technical solutions, preferably, the base includes a base frame, a positioning ring, and multiple positioning pins, wherein, The base frame is fixedly mounted on the processing table, and the threaded hole is formed on the base frame; Both the positioning ring and the positioning pin are fixedly mounted on the base frame and abut against the cycloidal wheel.

[0013] More preferably, the base further includes a sleeve shaft, which is fixedly mounted on the base frame and located inside the positioning ring, and the sleeve shaft is engaged with the central hole.

[0014] More preferably, both the pressure block and the sleeve shaft have multiple clearance grooves on their circumferences.

[0015] Based on the above technical solutions, preferably, the pressure block is provided with a through groove, the fixing bolt is slidably disposed in the through groove, and the through groove extends to the periphery of the pressure block.

[0016] The machining fixture for cycloidal wheels of this invention has the following advantages over the prior art: (1) By setting a side pressure mechanism, the cycloidal wheel can be fixed more firmly by resisting the circumference of the cycloidal wheel, and the machining accuracy of the cycloidal wheel can be guaranteed. By setting the top pressure mechanism to include pressure blocks and fixing bolts, the cycloidal wheel can be quickly disassembled and rotated, and the practicality of the fixture can be improved.

[0017] (2) By setting a locking block and a pin in the side pressure mechanism, the cycloidal wheel can be double-supported, which further improves the fixing firmness of the cycloidal wheel. By having the locking block support multiple cycloidal wheels, the structure of this fixture can be simplified. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a machining fixture for a cycloidal wheel according to the present invention.

[0020] Figure 2 This is a top view of the fixing bolt in the machining fixture for a cycloidal wheel according to this utility model.

[0021] Figure 3 This is a perspective view of the side pressure mechanism in a machining fixture for a cycloidal wheel according to this utility model.

[0022] Figure 4 This is a cross-sectional view of the pressing mechanism in a machining fixture for a cycloidal wheel according to this utility model.

[0023] Figure 5 This is an exploded view of the pressing mechanism in a machining fixture for a cycloidal wheel according to this utility model.

[0024] The components include: 1. Machining table; 2. Base; 21. Base frame; 22. Positioning ring; 23. Positioning pin; 24. Sleeve shaft; 201. Threaded hole; 202. Clearance groove; 3. Top pressing mechanism; 31. Pressure block; 32. Fixing bolt; 301. Through groove; 4. Side pressing mechanism; 41. Telescopic cylinder; 42. Clamping block; 43. Hole pin; 44. Limit seat; 45. Limit shaft; 5. Cycloidal wheel; 501. Center hole; 502. Through hole. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The cycloidal wheel 5 is a key transmission component used in cycloidal pinwheel reducers. It utilizes the principle of equidistant curves of the cycloid, using the equidistant curves of a short-amplitude epicycloid as the tooth profile curve of the gear. Figure 5 As shown, the cycloidal wheel 5 has a curved toothed structure on its periphery, and a central hole 501 is provided in the middle of the cycloidal wheel 5. The cycloidal wheel 5 may also have multiple through holes 502, which are arranged in a circular array around the axis of the central hole 501.

[0027] The present invention provides a machining fixture for a cycloidal wheel, comprising a machining table 1, a base 2, a top pressing mechanism 3, and a side pressing mechanism 4, for clamping and fixing the cycloidal wheel 5 for machining the cycloidal wheel 5; wherein, before machining the cycloidal wheel 5, a center hole 501 has been opened on the cycloidal wheel 5.

[0028] like Figure 2 As shown, the base 2 is fixedly mounted on the processing table 1, and the top pressing mechanism 3 and the side pressing mechanism 4 are also fixedly mounted on the processing table 1. After the cycloidal wheel 5 is mounted on the base 2, the top pressing mechanism 3 supports the side of the cycloidal wheel 5 away from the base 2, and the side pressing mechanism 4 supports the curved side of the cycloidal wheel 5, thereby improving the fixing firmness of the cycloidal wheel 5 and ensuring the processing accuracy of the cycloidal wheel 5.

[0029] In order to achieve batch processing of cycloidal wheels 5, it is preferable to set multiple bases 2 and pressing mechanisms 3 on the processing table 1, and arrange the multiple bases 2 and multiple pressing mechanisms 3 in a matrix manner to improve the processing efficiency of cycloidal wheels 5.

[0030] Specifically, such as Figure 2 and Figure 4 As shown, the base 2 has a threaded hole 201. The pressing mechanism 3 includes a pressing block 31 and a fixing bolt 32. After the cycloidal wheel 5 is placed on the base 2, the pressing block 31 is placed on the cycloidal wheel 5, and the fixing bolt 32 passes through the pressing block 31 and the center hole 501, and is connected in the threaded hole 201 by threaded engagement, so that the pressing block 31 and the base 2 respectively abut against the two sides of the cycloidal wheel 5, thereby achieving the abutment and fixation of the end face of the cycloidal wheel 5.

[0031] like Figure 2 and Figure 3As shown, the side-pressure mechanism 4 includes a telescopic cylinder 41, a locking block 42, a pin 43, a limiting seat 44, and a limiting shaft 45. The telescopic cylinder 41 is fixedly mounted on the processing table 1, and the locking block 42 is fixedly mounted on the output end of the telescopic cylinder 41. Preferably, the telescopic direction of the output end of the telescopic cylinder 41 is parallel to the axial direction of the cycloidal wheel 5. When the output end of the telescopic cylinder 41 extends, it can drive the locking block 42 closer to the cycloidal wheel 5, so that the locking block 42 abuts against the circumference of the cycloidal wheel 5. When the output end of the telescopic cylinder 41 retracts, it can drive the locking block 42 away from the cycloidal wheel 5, thereby allowing the cycloidal wheel 5 to be disassembled and assembled. The telescopic cylinder 41 is a device with a telescopic function, such as a pneumatic cylinder, an electric telescopic rod, or a hydraulic cylinder.

[0032] Preferably, the locking block 42 abuts against the circumference of the cycloidal wheels 5 on at least two bases 2, such as... Figure 2 As shown, the clamping block 42 is in contact with the two cycloidal wheels 5. In this case, a telescopic cylinder 41 can simultaneously control the fixing of the two cycloidal wheels 5, thereby simplifying the structure of the fixture.

[0033] like Figure 3 As shown, the pin 43 is fixedly mounted on the output end of the telescopic cylinder 41, as... Figure 2 As shown, after a through hole 502 is machined, the through hole 502 is rotated to the position of the pin 43, and the telescopic cylinder 41 drives the pin 43 to engage with the through hole 502, which can further improve the fixing firmness and fixing accuracy of the cycloidal wheel 5, so as to carry out subsequent machining of the through hole 502.

[0034] like Figure 3 As shown, the limiting seat 44 is fixedly mounted on the processing table 1, and the limiting shaft 45 is fixedly mounted on the output end of the telescopic cylinder 41. The limiting shaft 45 is slidably connected to the limiting seat 44. Preferably, two limiting seats 44 and limiting shafts 45 are provided, and the limiting seats 44 and limiting shafts 45 correspond one-to-one and are positioned opposite each other on both sides of the telescopic cylinder 41, thereby improving the movement stability of the locking block 42 and the hole pin 43.

[0035] The base 2 includes a base frame 21, a positioning ring 22, multiple positioning pins 23, and a sleeve shaft 24, such as Figure 4 and Figure 5 As shown, the base frame 21 is fixedly mounted on the processing table 1, the threaded hole 201 is opened on the base frame 21, and the positioning ring 22 and the positioning pin 23 are both fixedly mounted on the base frame 21. When the cycloidal wheel 5 is placed on the base 2, the cycloidal wheel 5 abuts against the positioning ring 22 and the positioning pin 23, so that the cycloidal wheel 5 and the base frame 21 are spaced apart, so as to perform the processing of the through hole 502.

[0036] like Figure 4 and Figure 5As shown, the sleeve shaft 24 is fixedly mounted on the base frame 21 and located inside the positioning ring 22. When the cycloidal wheel 5 is placed on the base 2, the sleeve shaft 24 is engaged with the center hole 501, which can further limit the cycloidal wheel 5 and ensure its installation accuracy.

[0037] To facilitate observation of the installation position of the cycloidal wheel 5, it is preferable to provide multiple clearance grooves 202 on both the pressure block 31 and the sleeve shaft 24, so that the detection head can observe the cycloidal wheel 5 through the clearance grooves 202.

[0038] like Figure 4 and Figure 5 As shown, the pressure block 31 is provided with a through groove 301, and the fixing bolt 32 is slidably disposed in the through groove 301. The through groove 301 extends to the periphery of the pressure block 31. When the fixing bolt 32 is connected to the threaded hole 201, the pressure block 31 can be quickly disassembled and assembled, thereby improving the replacement efficiency of the pressure block 31.

[0039] The method of using the machining fixture for the cycloidal wheel according to this utility model is as follows: First, place the cycloidal wheel 5 on the positioning ring 22 and positioning pin 23, and let the sleeve shaft 24 be inserted into the center hole 501. Then, place the pressure block 31 on the cycloidal wheel 5, and let the fixing bolt 32 pass through the through groove 301, the center hole 501 and the sleeve shaft 24 in sequence, and connect with the threaded hole 201, so that the pressure block 31 holds and fixes the cycloidal wheel 5. Next, process one of the through holes 502. After the through hole 502 is processed, loosen the fixing bolt 32 and rotate the cycloidal wheel 5 to rotate the through hole 502 to the position of the corresponding hole pin 43. Then tighten the fixing bolt 32 and let the output end of the telescopic cylinder 41 extend so that the hole pin 43 engages with the through hole 502, and the locking block 42 abuts against the circumference of the cycloidal wheel 5. Then, the next through hole 502 can be processed. Repeat the rotation of the cycloidal wheel 5 to process multiple through holes 502.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machining fixture for a cycloidal wheel, characterized in that: It includes a processing table (1), a base (2), a top pressing mechanism (3), and a side pressing mechanism (4), wherein, The base (2) is fixedly mounted on the processing table (1), and the base (2) is provided with a threaded hole (201). The top pressing mechanism (3) includes a pressure block (31) and a fixing bolt (32). The pressure block (31) and the base (2) are respectively abutted against the two sides of the cycloidal wheel (5). The fixing bolt (32) passes through the center hole (501) of the pressure block (31) and the cycloidal wheel (5) and is connected in the threaded hole (201) by threaded engagement. The side pressure mechanism (4) is fixedly mounted on the processing table (1) and abuts against the circumference of the cycloidal wheel (5).

2. The machining fixture for a cycloidal wheel as described in claim 1, characterized in that: The side pressure mechanism (4) includes a telescopic cylinder (41) and a locking block (42), wherein, The telescopic cylinder (41) is fixedly mounted on the processing table (1); The locking block (42) is fixedly mounted on the output end of the telescopic cylinder (41) and abuts against the circumference of the cycloidal wheel (5).

3. The machining fixture for a cycloidal wheel as described in claim 2, characterized in that: Both the base (2) and the top pressing mechanism (3) are provided with multiple components.

4. The machining fixture for a cycloidal wheel as described in claim 3, characterized in that: The locking block (42) abuts against the periphery of the cycloidal wheels (5) on at least two of the bases (2).

5. The machining fixture for a cycloidal wheel as described in claim 2, characterized in that: The side pressure mechanism (4) also includes a pin (43), which is fixedly mounted on the output end of the telescopic cylinder (41) and engages with the through hole (502) of the cycloidal wheel (5).

6. The machining fixture for a cycloidal wheel as described in claim 2, characterized in that: The side pressure mechanism (4) further includes a limiting seat (44) and a limiting shaft (45), wherein, The limiting seat (44) is fixedly mounted on the processing table (1); The limiting shaft (45) is fixedly installed on the output end of the telescopic cylinder (41) and is slidably connected to the limiting seat (44).

7. The machining fixture for a cycloidal wheel as described in claim 1, characterized in that: The base (2) includes a base frame (21), a positioning ring (22), and multiple positioning pins (23), wherein, The base frame (21) is fixedly mounted on the processing table (1), and the threaded hole (201) is opened on the base frame (21); The positioning ring (22) and the positioning pin (23) are both fixedly mounted on the base frame (21) and abut against the cycloidal wheel (5).

8. The machining fixture for a cycloidal wheel as described in claim 7, characterized in that: The base (2) also includes a sleeve shaft (24), which is fixedly mounted on the base frame (21) and located inside the positioning ring (22), and the sleeve shaft (24) is engaged with the center hole (501).

9. The machining fixture for a cycloidal wheel as described in claim 8, characterized in that: Multiple clearance grooves (202) are provided on the periphery of both the pressure block (31) and the sleeve shaft (24).

10. The machining fixture for a cycloidal wheel as described in claim 1, characterized in that: The pressure block (31) is provided with a through groove (301), the fixing bolt (32) is slidably disposed in the through groove (301), and the through groove (301) extends to the periphery of the pressure block (31).

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