A machining tool for a motor flange end cover

Abstract

This invention provides a machining fixture for motor flange end caps, belonging to the field of flange end cap machining technology. It includes a clamping part comprising a horizontal clamping area and a vertical clamping area. Both the horizontal and vertical clamping areas are equipped with a radial limiting reference component, an axial limiting component, and a fixed limiting component that cooperates with the radial limiting reference component. The axial limiting component includes a connecting column, on which an elastic element, a contact limiting element, and a locking element are sequentially arranged. This machining fixture for motor flange end caps simultaneously limits and fixes the end cap in both radial and circumferential directions, effectively improving the stability of the end cap during machining. This ensures machining accuracy and quality, and the entire clamping process is highly convenient, facilitating quick and accurate clamping of the end cap, while also allowing for rapid disassembly.

Description

Technical Field

[0001] This invention relates to the field of flange end cover processing technology, specifically to a processing fixture for motor flange end covers. Background Technology

[0002] The motor flange end cover (hereinafter referred to as the end cover) connects the stator and rotor intermittently via bearings and is one of the important structural components of motor products. The machining accuracy of the end cover directly affects the performance and reliability of the motor. Among them, the machining accuracy of the holes on the end cover is one of the factors that directly affects the performance level of the motor. The positional accuracy of the holes themselves and the relative positional accuracy with other holes directly affect the quality and reliability of the end cover installation, and thus affect the performance level of the motor. Therefore, the precision requirements for drilling the end cover are high. Moreover, due to the different end cover structures and hole distributions, the drilling process is not the same. In order to improve the quality and accuracy of drilling, the drilling process will be appropriately improved and optimized according to the structure of the end cover and the partial condition of the holes.

[0003] Currently, for large end caps that require drilling on both the end face and the side, the common practice is to use two clamping operations to process the end cap holes on the end face and the side holes on the end cap respectively. However, the existing two-clamping drilling process still needs further improvement and optimization in terms of processing quality. Due to the heavy weight of the end cap and the different hole distribution surfaces, the existing drilling process, which clamps and fixes the end cap only from the side, cannot guarantee the stability of the end cap during processing. This reduces the precision and quality of the end cap processing, which in turn affects the subsequent assembly of the end cap. Summary of the Invention

[0004] This invention provides a machining fixture for motor flange end caps to solve the problem that the drilling process for large end caps in related technologies has relatively low machining accuracy and quality.

[0005] This invention provides a machining fixture for a motor flange end cover. The machining fixture includes a clamping part, which includes a horizontal clamping area and a vertical clamping area. Both the horizontal and vertical clamping areas are provided with a radial limiting reference component, an axial limiting component, and a fixed limiting component that cooperates with the radial limiting reference component. The radial limiting reference component is fixedly installed. The axial limiting component includes a connecting column, on which an elastic element, a contact limiting element, and a locking element are sequentially arranged. The contact limiting element is movably sleeved on the connecting column. A pick-and-place part cooperates with the clamping part. The pick-and-place part includes a movable frame. Two reference seats are slidably mounted on the frame, corresponding to the horizontal and vertical clamping areas respectively. A fine-tuning seat is floatingly mounted on the reference seat corresponding to the horizontal clamping area, and an initial suppression element is provided between the fine-tuning seat and the reference seat. A linear feed seat is mounted on the reference seat corresponding to the vertical clamping area. Both the linear feed seat and the fine-tuning seat are provided with clamping mechanisms.

[0006] In one possible implementation, the end cap is first machined with holes on its end face in a horizontal clamping area, and then with holes in its circumferential direction in a vertical clamping area. The feed seat is provided with positioning pins, the number of which is at least two, to simulate the distribution of holes on the upper end face of the end cap and to provide a reference limit for the end cap. The fixed limiting component in the vertical clamping area consists of several limiting pins, the number of which is at least two, and these pins also simulate the distribution of holes on the upper end face of the end cap to limit the end cap. The holes on the end face simulated by the limiting pins and the positioning pins are not the same.

[0007] In one possible implementation, the fixed limiting assembly in the horizontal clamping area includes a fixed seat, a sliding seat with a limiting head slidably connected to the fixed seat, an elastic reset member connected between the sliding seat and the fixed seat, and an instant locking member threadedly connected to the fixed seat, the instant locking member locking both the elastic reset member and the sliding seat simultaneously.

[0008] In one possible implementation, the instant locking member includes a contact locking portion and a locking feed portion, the elastic reset member includes an elastic portion and a contact connection portion, and the locking feed portion controls the contact locking portion to simultaneously lock the contact connection portion and the slide seat.

[0009] In one possible implementation, the axial limiting assembly in the vertical clamping area further includes an immediate limiting member, and the contact limiting member in the axial limiting assembly has a limiting groove corresponding to the immediate limiting member.

[0010] In one possible implementation, the axial limiting assembly within the vertical clamping area further includes a buffer support, which includes a buffer seat on which an arc-shaped sliding member with a bearing joint is elastically slidably connected.

[0011] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. According to an embodiment of the present invention, a machining fixture for a motor flange end cover is provided. The clamping part simultaneously limits and fixes the end cover from both radial and circumferential directions, which effectively improves the stability of the end cover's state during machining. This effectively ensures the machining accuracy and quality, and the entire clamping process is highly convenient, facilitating the quick and accurate completion of the end cover clamping work. At the same time, the end cover can also be quickly disassembled.

[0012] 2. According to an embodiment of the present invention, a machining fixture for a motor flange end cover is provided. The end cover is first machined with end holes in a horizontal clamping area, and then with circumferential holes in a vertical clamping area. The structures of the radial limiting reference component, axial limiting component, and fixed limiting component in the horizontal clamping area, as well as the structures of the radial limiting reference component, axial limiting component, and fixed limiting component in the vertical clamping area, are all set according to the structural characteristics of the corresponding end cover, so as to quickly, stably, and conveniently clamp and disassemble the end cover, effectively improving the convenience of clamping and disassembly, and correspondingly improving the overall drilling machining convenience.

[0013] 3. According to the embodiment of the present invention, a machining fixture for a motor flange end cover is provided. The instant locking component simultaneously locks and unlocks the elastic reset component and the sliding seat. During the assembly and disassembly of the end cover, it is only necessary to release the locking state of the instant locking component to automatically release the radial clamping and fixing state of the end cover, which facilitates the quick removal of the end cover. In the state of clamping the end cover, the influence of the elastic reset component on the fixing state of the sliding seat under deformation is effectively reduced, and the stability of the end cover clamping state is improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the end cap after drilling.

[0015] Figure 2 This is a schematic diagram of the clamping and loading / unloading parts of a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the fine-tuning seat and clamping mechanism of a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the radial limiting reference component, instantaneous limiting component, and limiting groove of a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the vertical clamping area of ​​a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0019] Figure 6 This is a structural schematic diagram of an elastic reset component and an instant locking component of a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the initial suppression component and the clamping mechanism on the fine-tuning seat of a machining fixture for a motor flange end cover provided in an embodiment of the present invention.

[0021] In the diagram: 1. Radial limiting reference assembly; 2. Axial limiting assembly; 21. Connecting post; 22. Elastic element; 23. Contact limiting element; 24. Locking element; 25. Instant limiting element; 26. Limiting groove; 27. Buffer receiving element; 271. Buffer seat; 272. Receiving joint; 273. Arc-shaped sliding element; 3. Fixed limiting assembly; 31. Fixed seat; 32. Limiting head; 33. Sliding seat; 34. Elastic reset element; 341. Elastic part; 342. Contact connection part; 35. Instant locking element; 351. Contact locking part; 352. Locking feed part; 4. Frame; 5. Reference seat; 6. Fine adjustment seat; 7. Initial suppression element; 8. Linear feed seat; 9. Clamping mechanism; 10. Positioning pin; 11. Base; 12. End hole; 13. Side hole. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Please see Figures 1-4A machining fixture for an electric motor flange end cover includes a clamping part and a pick-and-place part that works in conjunction with the clamping part. The clamping part includes a base 11 with a horizontal clamping area and a vertical clamping area. The horizontal clamping area clamps a horizontally placed end cover, and the vertical clamping area clamps a vertically placed end cover. The drilling sequence for an end cover is as follows: first, drilling is performed in the horizontal clamping area to machine the holes distributed on the end face of the end cover; then, drilling is performed in the vertical clamping area to machine the holes distributed on the side of the end cover. For ease of understanding, it is assumed that the holes distributed on the end face of the end cover are all end face holes 12, and the holes distributed on the side are all side face holes 13. Both the horizontal clamping area and the vertical clamping area are provided with a radial limiting reference component 1, an axial limiting component 2, and a radial limiting reference component 3. The fixed limiting component 3, which cooperates with the limiting reference component 1, provides a clamping reference for the end cap through the radial limiting reference component 1. During the drilling process, the position of the end cap remains unchanged, which is beneficial for the automatic drilling device (not shown in the figure) to accurately perform drilling based on the clamping reference. The machining of the end hole 12 and the side hole 13 is performed in two steps. The radial limiting reference component 1 and the fixed limiting component 3 cooperate to limit and fix the end cap in the radial direction. At the same time, the axial limiting component 2 limits and fixes the end cap in the axial direction. While ensuring the clamping accuracy of the end cap, the stability of the end cap clamping is effectively improved, which in turn improves the stability and accuracy of the drilling process, thereby improving the quality of the drilling process.

[0024] See Figure 4 and Figure 5 The radial limit reference component 1 is fixed, such as Figure 4As shown, the radial limiting reference component 1 consists of two symmetrically arranged limiting blocks, which are fixedly installed on the base 11. The limiting surfaces of the limiting blocks are all arc-shaped. In the limiting state, the limiting surfaces abut against the side of the end cap, simultaneously working with the fixed limiting component 3 to limit the end cap, ensuring the end face is radially stable in its current position. Then, the axial limiting component 2 is used to axially limit and fix the end cap, ensuring the end face is in a stable clamping state, improving the stability of the end cap's position during processing. The axial limiting component 2 includes a connecting post 21, on which an elastic element 22, a contact limiting element 23, and a locking element 24 are sequentially arranged. The contact limiting element 23 is movably sleeved on the connecting post 21, and the connecting post 21 is fixedly installed on the base 11. The elastic element 22 is a spring element and is limited and sleeved on the connecting column 21. The connecting columns 21 in the axial limiting assembly 2 in the horizontal clamping area are symmetrically distributed left and right, and the connecting columns 21 in the axial limiting assembly 2 in the vertical clamping area are symmetrically distributed front and back. During the clamping and fixing process, it is only necessary to rotate the contact limiting element 23 so that it partially coincides with the end face of the end cover, and then use the locking element 24 to lock the contact limiting element 23. The whole process is very convenient and easy to operate, which can effectively ensure the stability and accuracy of clamping. During the disassembly process, when the locking element 24 is unlocked, the elastic element 22 will automatically separate the contact limiting element 23 from the end cover. After that, it is only necessary to rotate the contact limiting element 23 to offset it from the end cover, which is convenient for both clamping and disassembly.

[0025] See Figure 4 and Figure 6 The fixed limiting component 3 in the horizontal clamping area includes a fixed base 31, which is fixedly installed on the base 11. A sliding seat 33 with a limiting head 32 is slidably connected to the fixed base 31. Specifically, the sliding seat 33 can be slidably moved by an electric slider. Figure 4 As shown, the limiting head 32 is an isosceles trapezoidal structure. The limiting head 32 engages between adjacent protrusions on the end cap to limit and position the end cap. An elastic reset member 34 connects the sliding seat 33 and the fixed seat 31. An instant locking member 35 is threaded onto the fixed seat 31. The instant locking member 35 simultaneously locks both the elastic reset member 34 and the sliding seat 33. Figure 6As shown, the elastic reset member 34 includes an elastic portion 341 and a contact connection portion 342. The elastic portion 341 is connected to the sliding seat 33 through the contact connection portion 342. The instantaneous locking member 35 includes a contact locking portion 351 and a locking feed portion 352 that is screwed to the fixed seat 31. The contact locking portion 351 includes a main contact area and a secondary contact area. The secondary contact area covers the range of motion of the contact connection portion 342. During the clamping process, the sliding seat 33 is moved until the limiting head 32 is stably locked between the corresponding protrusions of the end cover to limit and position the end cover. Then, the locking feed portion 352 is rotated so that the contact locking portion 351 simultaneously locks the sliding seat 33. The movable seat 33 and the contact connection part 342 are limited and locked. During disassembly, only the locking feed part 352 needs to be rotated in the opposite direction. The sliding seat 33 can be automatically reset under the action of the elastic reset member 34, which further improves the convenience of continuous processing. In the clamped and fixed state, the secondary contact area of ​​the contact locking part 351 is used to limit and lock the contact connection part 342, which effectively reduces the influence of the elastic reset member 34 on the fixed state of the sliding seat 33 under the deformation state. The main contact area directly applies the locking feed part 352 locking force vertically to the sliding seat 33, which correspondingly improves the stability of the end cover clamping state.

[0026] See Figure 4 and Figure 5 The axial limiting assembly 2 in the vertical clamping area also includes an immediate limiting member 25, and the contact limiting member 23 in the axial limiting assembly 2 has a limiting groove 26 corresponding to the immediate limiting member 25, such as Figure 4 As shown, during the clamping process, the contact limiting member 23 in the vertical clamping area is prone to rotating downwards due to gravity, which affects the convenience and stability of the clamping process. Therefore, during the clamping process, after rotating the contact limiting member 23 to the corresponding position, the limiting groove 26 on it is aligned with the corresponding immediate limiting member 25. Then, the contact limiting member 23 is pushed slightly to the right so that the immediate limiting member 25 is inserted into the corresponding limiting groove 26. Immediately afterwards, the locking member 24 can be quickly tightened to limit the contact limiting member 23 to the end cap. The whole process is not only fast and convenient, but also effectively avoids the contact limiting member 23 from rotating downwards due to gravity during the locking process, which would affect the clamping. At the same time, the immediate limiting member 25 limits the contact limiting member 23, which further improves the stability of the clamping and fixing.

[0027] See Figure 5The axial limiting component 2 in the vertical clamping area also includes a buffer receiving component 27. The buffer receiving component 27 includes a buffer seat 271, which is fixedly installed on the base 11. An arc-shaped sliding component 273 with a receiving joint 272 is elastically slidably connected to the buffer seat 271. During disassembly, the contact limiting component 23 in the vertical clamping area automatically slides to the right to unlock under the action of the elastic component 22. After the limiting groove 26 separates from the corresponding instantaneous limiting component 25, it automatically rotates downward. At this time, the contact limiting component 23 will fall directly onto the receiving joint 272. Under the action of the contact limiting component 23, the receiving joint 272 will drive the arc-shaped sliding component 273 to slide on the buffer seat 271 and buffer until the contact limiting component 23 stops smoothly.

[0028] See Figure 5 The fixed limiting component 3 in the vertical clamping area consists of several limiting pins. The number of limiting pins is at least two, and they simulate the distribution of the end holes 12 on the end cap to limit the end cap. When there are two limiting pins, one of them corresponds to the end hole 12 in the middle of the end cap, and the other corresponds to the end hole 12 on the upper rear side. During the clamping process, it is only necessary to align the corresponding hole on the end cap with the corresponding limiting pin and then insert the end cap to limit and fix the end cap in the radial direction. Here, in order to facilitate clamping, there will be a small gap between the limiting pin and the end hole 12, but it does not affect the stability and accuracy of the end cap clamping. Since the radial limiting reference component 1 in the vertical clamping area is located below the end cap, after the limiting pin is inserted into the corresponding hole on the end cap to initially limit the end cap, the end cap will fall on the radial limiting reference component 1 below under the action of gravity. The radial limiting reference component 1 is used to limit it again, thereby improving the positional accuracy of the end cap and the stability of subsequent clamping.

[0029] See Figure 2 , Figure 3 and Figure 7The invention also includes a pick-and-place unit that cooperates with the clamping unit. The pick-and-place unit includes a movable frame 4, which moves forward and backward with limited movement. Two reference seats 5 are slidably mounted on the upper limit of the frame 4. The two reference seats 5 correspond to the horizontal clamping area and the vertical clamping area, respectively. The two reference seats 5 are controlled one-to-one by existing electric devices (such as electric sliders), allowing each reference seat 5 to move independently without interference. For ease of understanding, the reference seat 5 corresponding to the horizontal clamping area is designated as the first reference seat, and the reference seat 5 corresponding to the vertical clamping area is designated as the second reference seat. A fine-tuning seat 6 is floating on the first reference seat, and an initial suppression member 7 is provided between the fine-tuning seat 6 and the first reference seat. A linear feed seat 8 is provided on the second reference seat, and the linear feed seat 8 and the fine-tuning seat 6 are connected... Each base 6 is equipped with a clamping mechanism 9. During the process of picking up and placing the end cap, the frame 4 is moved backward to the limiting point. The first reference base is located above the horizontal clamping area and is in a fixed position relative to the radial limiting reference component 1 in the horizontal clamping area. The second reference base is located to the right of the vertical clamping area and is also in a fixed position relative to the radial limiting reference component 1 in the vertical clamping area. Then, the first reference base is moved straight down so that the end cap held by the clamping mechanism 9 falls onto the base on the base 11. Then, the end cap is limited and fixed by the corresponding fixing limiting component 3. During the straight downward movement of the first reference base, the end cap held by the clamping mechanism 9 is slightly offset backward due to the influence of the initial suppressing member 7. Figure 7 As shown, this ensures that the end cap can fall smoothly onto the base, avoiding mechanical errors that could cause the end cap to get stuck on the corresponding radial limiting reference component 1, thus affecting the smoothness of the clamping process. At the same time, it will not affect the subsequent limiting component 3's limiting and fixing of the end cap. Meanwhile, the second reference seat moves linearly downward to the limiting point, and then the linear feed seat 8 moves linearly to the left to deliver the end cap into the vertical clamping area for clamping and fixing. The linear feed seat 8 is equipped with positioning pins 10, with at least two positioning pins 10, which simulate the distribution of the end holes 12 on the end cap to provide reference limiting for the end cap. The positioning pins 10 and the limiting pins simulate different end holes 12. By limiting the end cap with the positioning pins 10, the linear feed seat 8 only needs to move linearly to the left to allow the limiting pins to be smoothly inserted into the corresponding end holes 12 to limit and fix the end cap.

[0030] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A machining fixture for a motor flange end cover, characterized in that: The device includes a clamping section, which comprises a horizontal clamping area and a vertical clamping area. Both the horizontal and vertical clamping areas are provided with a radial limiting reference component (1), an axial limiting component (2), and a fixed limiting component (3) that cooperates with the radial limiting reference component (1). Among them, the radial limiting reference component (1) is fixedly set, and the axial limiting component (2) includes a connecting column (21). The connecting column (21) is provided with an elastic element (22), a contact limiting element (23) and a locking element (24) in sequence. The contact limiting element (23) is movably sleeved on the connecting column (21). The pick-and-place unit that cooperates with the clamping unit includes a movable frame (4). The frame (4) has two reference seats (5) that are slidably mounted at the upper limit. The two reference seats (5) correspond to the horizontal clamping area and the vertical clamping area, respectively. A fine-tuning seat (6) is floatingly mounted on the reference seat (5) corresponding to the horizontal clamping area. An initial suppression member (7) is provided between the fine-tuning seat (6) and the reference seat (5). A linear feed seat (8) is provided on the reference seat (5) corresponding to the vertical clamping area. A clamping mechanism (9) is provided on both the linear feed seat (8) and the fine-tuning seat (6). The axial limiting component (2) in the vertical clamping area also includes a buffer support (27), which includes a buffer seat (271). The buffer seat (271) is fixedly installed on the base (11), and an arc-shaped sliding member (273) with a bearing joint (272) is elastically slidably connected to the buffer seat (271).

2. The machining fixture for a motor flange end cover according to claim 1, characterized in that: The end cap is first machined with holes on the end face in the horizontal clamping area, and then with holes in the circumferential direction in the vertical clamping area. The linear feed seat (8) is provided with positioning pins (10), and the number of positioning pins (10) is at least two. The distribution of holes on the upper end face of the end cap is simulated to limit the end cap. The fixed limiting component (3) in the vertical clamping area consists of several limiting pins. The number of limiting pins is at least two and the distribution of holes on the upper end face of the end cap is simulated to limit the end cap. The holes on the end face simulated by the limiting pins and the positioning pins (10) are not the same.

3. The machining fixture for a motor flange end cover according to claim 1 or 2, characterized in that: The fixed limiting component (3) in the horizontal clamping area includes a fixed seat (31), a sliding seat (33) with a limiting head (32) is slidably connected to the fixed seat (31), an elastic reset member (34) is connected between the sliding seat (33) and the fixed seat (31), and an instant locking member (35) is threadedly connected to the fixed seat (31). The instant locking member (35) locks both the elastic reset member (34) and the sliding seat (33).

4. The machining fixture for a motor flange end cover according to claim 3, characterized in that: The instant locking member (35) includes a contact locking part (351) and a locking feed part (352), and the elastic reset member (34) includes an elastic part (341) and a contact connection part (342). The locking feed part (352) controls the contact locking part (351) to lock the contact connection part (342) and the sliding seat (33) at the same time.

5. The machining fixture for a motor flange end cover according to claim 3, characterized in that: The axial limiting component (2) in the vertical clamping area also includes an immediate limiting component (25), and the contact limiting component (23) in the axial limiting component (2) is provided with a limiting groove (26) corresponding to the immediate limiting component (25).

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