A machining tool for a special-shaped movable contact

Abstract

The utility model relates to a moving contact machining technical field especially a special-shaped moving contact machining frock, aims at solving the problem of the insufficient positioning of the existing clamping frock. The special-shaped moving contact machining frock provided by the utility model includes positioning shaft, gland and positioning strip, the annular blank and the gland are all sleeved on the positioning shaft, and the two ends of the annular blank abut on the positioning shaft and the gland respectively, the outer periphery of the annular blank is provided with the through groove extending along the axial direction, and the positioning strip is clamped in the through groove, and the positioning strip is connected with the positioning shaft and the gland. The utility model realizes the axial positioning and locking of the annular blank through the cooperation of the positioning shaft and the gland, the positioning strip is clamped in the through groove of the annular blank, and the positioning and locking of the circumference of the annular blank are realized, the reliable positioning and locking are realized through the cooperation of the three, so that the rotation of the blank due to the insufficient clamping force, vibration and other reasons is avoided, and the situation that the machining precision and the machining quality are insufficient is caused.

Description

Technical Field

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

[0002] When machining irregularly shaped moving contacts, a ring-shaped blank must first be machined. Then, after drilling and other machining processes, the ring-shaped blank is cut axially into multiple independent moving contacts. In actual machining, existing clamping fixtures are insufficient for positioning, making it difficult to guarantee machining accuracy and quality. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for processing irregularly shaped moving contacts, so as to solve the problem of insufficient positioning of existing clamping tools.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a tooling for processing irregularly shaped moving contacts, including a positioning shaft, a pressure cap, and a positioning strip;

[0006] Both the annular blank and the pressure cap are fitted onto the positioning shaft, with the two ends of the annular blank abutting against the positioning shaft and the pressure cap, respectively.

[0007] The outer periphery of the annular blank is provided with a through groove extending along the axial direction, and the positioning strip is engaged with the through groove.

[0008] The positioning strip is connected to the positioning shaft and the pressure cap.

[0009] Furthermore, the positioning strip is provided with a guide hole, through which the drill bit passes to drill a hole in the annular blank.

[0010] Furthermore, the tooling for machining irregularly shaped moving contacts also includes an isolation sleeve, which is fitted onto the positioning shaft and simultaneously inserted into the annular blank;

[0011] The isolation sleeve is provided with clearance holes, and the clearance holes correspond one-to-one with the guide holes;

[0012] The diameter of the clearance hole is larger than the diameter of the guide hole.

[0013] Furthermore, a first milling plane is provided on the positioning shaft, and a second milling plane is provided on the inner wall of the isolation sleeve, with the first milling plane and the second milling plane cooperating.

[0014] Furthermore, the positioning shaft is provided with a plurality of first locking grooves arranged around its own axis, and the pressure cover is provided with a plurality of second locking grooves arranged around its own axis.

[0015] The first slot and the second slot are in one-to-one correspondence, and the two ends of the positioning strip are respectively engaged in the first slot and the second slot.

[0016] Furthermore, the positioning strip is provided with a first countersunk hole and a second countersunk hole, the bottom surface of the first locking groove is provided with a first threaded hole, and the bottom surface of the second locking groove is provided with a second threaded hole.

[0017] The first countersunk hole mates with the first threaded hole, and the second countersunk hole mates with the second threaded hole, thereby connecting the positioning strip to the positioning shaft and the pressure cap by screws.

[0018] Furthermore, the inner wall of the pressure cap is provided with a third milling plane, which mates with the first milling plane.

[0019] Furthermore, the positioning shaft is provided with an annular boss, and the first locking groove is formed on the annular boss and passes through the annular boss axially.

[0020] The annular blank and the isolation sleeve abut one end against the annular boss, and the other end against the pressure cap.

[0021] Furthermore, two parallel fourth milling planes are provided on the positioning shaft;

[0022] The outer periphery of the pressure cap is provided with two parallel fifth milling planes.

[0023] Furthermore, the tooling for machining irregularly shaped moving contacts also includes a locking nut, which is fitted onto the positioning shaft and threadedly connected to the positioning shaft;

[0024] The locking nut abuts against the pressure cap.

[0025] Based on the above technical solutions, the technical effects achieved by this utility model are as follows:

[0026] The tooling for processing irregularly shaped moving contacts provided by this utility model includes a positioning shaft, a pressure cap, and a positioning strip; both the annular blank and the pressure cap are fitted onto the positioning shaft, and the two ends of the annular blank abut against the positioning shaft and the pressure cap respectively; the outer periphery of the annular blank is provided with a through groove extending along the axial direction, and the positioning strip is engaged in the through groove; the positioning strip is connected to the positioning shaft and the pressure cap.

[0027] The non-circular moving contact processing fixture provided by this utility model achieves axial positioning and locking of the annular blank through the cooperation of the positioning shaft and the pressure cover. The positioning strip is engaged with the through groove of the annular blank to achieve circumferential positioning and locking of the annular blank. The three work together to achieve reliable positioning and locking, thereby avoiding the situation where the blank rotates due to insufficient clamping force, vibration and other reasons, resulting in insufficient processing accuracy and processing quality. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the irregularly shaped moving contact processing fixture provided in an embodiment of the present utility model;

[0030] Figure 2 A cross-sectional schematic diagram of the machining fixture for irregularly shaped moving contacts provided in an embodiment of this utility model;

[0031] Figure 3 This is a schematic diagram of the positioning shaft.

[0032] Figure 4 This is a schematic diagram of the gland structure;

[0033] Figure 5 This is a schematic diagram of the positioning strip.

[0034] Figure 6 This is a schematic diagram of the isolation sleeve.

[0035] Figure 7 This is a schematic diagram of the structure of a ring-shaped blank;

[0036] Figure 8 This is a schematic diagram of the moving contact.

[0037] Icons: 100, Positioning shaft; 200, Pressure cap; 300, Positioning strip; 400, Isolation sleeve; 500, Locking nut; 110, Annular boss; 120, Clamping section; 130, Mounting section; 140, Threaded section; 101, First milled plane; 102, First locking groove; 103, First threaded hole; 104, Fourth milled plane; 201, Second locking groove; 202, Second threaded hole; 203, Third milled plane; 204, Fifth milled plane; 310, Guide hole; 320, First countersunk hole; 330, Second countersunk hole; 410, Displacement hole; 401, Second milled plane; 10, Annular blank; 11, Through groove; 12, Connecting hole. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] When machining irregularly shaped moving contacts, a ring-shaped blank is first machined. Then, after drilling and other machining processes on the 10 ring-shaped blanks, they are cut axially into multiple independent moving contacts. In actual machining, the clamping force on copper parts should not be too large. Existing clamping fixtures are insufficient for positioning, making it difficult to guarantee machining accuracy and quality.

[0041] In view of this, the present invention provides a tooling for processing irregularly shaped moving contacts, including a positioning shaft 100, a pressure cap 200, and a positioning strip 300; both the annular blank 10 and the pressure cap 200 are fitted onto the positioning shaft 100, and the two ends of the annular blank 10 abut against the positioning shaft 100 and the pressure cap 200 respectively; the outer periphery of the annular blank 10 is provided with a through groove 11 extending axially, and the positioning strip 300 is snapped into the through groove 11; the positioning strip 300 is connected to the positioning shaft 100 and the pressure cap 200.

[0042] The non-circular moving contact processing fixture provided by this utility model achieves axial positioning and locking of the annular blank 10 through the cooperation of the positioning shaft 100 and the pressure cover 200. The positioning strip 300 is engaged with the through groove 11 of the annular blank 10 to achieve circumferential positioning and locking of the annular blank 10. The three cooperate with each other to achieve reliable positioning and locking, thereby avoiding the blank from rotating due to insufficient clamping force, vibration and other reasons, which would lead to insufficient processing accuracy and processing quality.

[0043] The following combination Figures 1-8 The structure and shape of the irregular moving contact processing fixture provided in this embodiment are described in detail.

[0044] In this embodiment, the structure of the annular blank 10 is as follows: Figure 7 As shown, multiple through grooves 11 are evenly distributed around the axis of the annular blank 10, dividing the outer wall of the annular blank 10 into multiple protrusions. A through groove 11 is formed between two protrusions, and a connecting hole 12 is formed at the bottom of the through groove 11. Correspondingly, as Figure 8 As shown, the moving contact is formed by cutting the annular blank 10 from the convex strip.

[0045] In this embodiment, the positioning strip 300 is provided with a guide hole 310. The drill bit passes through the guide hole 310 to drill a hole in the annular blank 10, thereby avoiding deflection caused by the drill bit contacting the circumferential surface during drilling and ensuring drilling quality. The diameter of the guide hole 310 is equal to that of the connecting hole 12 to ensure guidance of the drill bit.

[0046] To reduce damage to the pilot hole 310 from the drill bit, a drill bushing can be installed on the pilot hole 310. The drill bushing is made of a wear-resistant and high-hardness material and has undergone appropriate heat treatment such as carburizing and quenching. The drill bushing is inserted into the pilot hole 310 with an interference fit, and the inner diameter of the drill bushing is equal to the diameter of the connecting hole 12. Specifically, the drill bushing can be made of 20Cr, bearing steel, carbon tool steel, etc.

[0047] In this embodiment, to avoid damage to the positioning shaft 100 by the drill bit and potential damage when the drill bit hits the positioning shaft 100, the irregularly shaped moving contact machining fixture also includes an isolation sleeve 400. The isolation sleeve 400 is fitted onto the positioning shaft 100 and simultaneously inserted into the annular blank 10. The isolation sleeve 400 is provided with a clearance hole 410, which corresponds one-to-one with the guide hole 310. The diameter of the clearance hole 410 is larger than the diameter of the guide hole 310. That is, when the drilling of the connecting hole 12 is completed, the end of the drill bit extends into the clearance hole 410 but does not contact the positioning shaft 100, thereby avoiding possible deflection, breakage, etc., that may occur when the drill bit comes into contact with other parts during the drilling process.

[0048] The outer diameter of the isolation sleeve 400 is equal to the inner diameter of the annular blank 10 to ensure positioning. The two ends of the isolation sleeve 400 abut against the positioning shaft 100 and the pressure cap 200, respectively. Furthermore, the positioning shaft 100 is provided with a first milling plane 101, and the inner wall of the isolation sleeve 400 is provided with a second milling plane 401. The first milling plane 101 and the second milling plane 401 cooperate to prevent the isolation sleeve 400 from rotating relative to the positioning shaft 100.

[0049] In this embodiment, the positioning shaft 100 is provided with a plurality of first positioning grooves 102 arranged around its own axis, and the pressure cover 200 is provided with a plurality of second positioning grooves 201 arranged around its own axis; the first positioning grooves 102 and the second positioning grooves 201 correspond one-to-one, and the two ends of the positioning strip 300 are respectively engaged with the first positioning grooves 102 and the second positioning grooves 201, thereby ensuring that the positioning strip 300 is accurately positioned and does not move, thereby ensuring reliable positioning of the annular blank 10.

[0050] Furthermore, the positioning strip 300 has a first countersunk hole 320 and a second countersunk hole 330, the bottom surface of the first locking groove 102 has a first threaded hole 103, and the bottom surface of the second locking groove 201 has a second threaded hole 202, such as Figure 3 , Figure 4 , Figure 5As shown, the first countersunk hole 320 mates with the first threaded hole 103, and the second countersunk hole 330 mates with the second threaded hole 202, thereby connecting the positioning strip 300 to the positioning shaft 100 and the pressure cap 200 via screws. This screw connection allows for a detachable connection between the positioning strip 300, the positioning shaft 100, and the pressure cap 200, facilitating the use of the tooling and allowing for flexible selection of the number of positioning strips 300. In other words, the number of positioning strips 300 can be selected as needed.

[0051] In this embodiment, the inner wall of the pressure cover 200 is provided with a third milling plane 203, which cooperates with the first milling plane 101 to ensure that the first locking groove 102 and the second locking groove 201 are aligned and to ensure the installation of the positioning strip 300.

[0052] In this embodiment, an annular boss 110 is provided on the positioning shaft 100, and a first locking groove 102 is opened on the annular boss 110 and passes through the annular boss 110 axially; one end of the annular blank 10 and the isolation sleeve 400 abuts against the annular boss 110, and the other end abuts against the pressure cap 200 to achieve axial positioning.

[0053] In this embodiment, in order to facilitate the clamping and fixing of the tooling, two parallel fourth milling planes 104 are provided on the positioning shaft 100; two parallel fifth milling planes 204 are provided on the outer periphery of the pressure cover 200, so that the tooling can be accurately and stably clamped by clamping the fourth milling planes 104 and the fifth milling planes 204.

[0054] In this embodiment, the tooling for processing irregular moving contacts also includes a locking nut 500, which is fitted onto the positioning shaft 100 and threadedly connected to the positioning shaft 100; the locking nut 500 abuts against the pressure cover 200 to complete the axial locking of the pressure cover 200.

[0055] In this embodiment, the positioning shaft 100 includes a clamping section 120, an annular boss 110, an mounting section 130 and a threaded section 140 connected in sequence. A fourth milling plane 104 is disposed on the clamping section 120, a first milling plane 101 is disposed on the mounting section 130, an isolation sleeve 400 is fitted onto the mounting sleeve, and a locking nut 500 is fitted onto the threaded section 140.

[0056] The method of using the irregular moving contact processing fixture provided in this embodiment is as follows: After the isolation sleeve 400 is put onto the positioning shaft 100, the annular blank 10, the pressure cover 200 and the locking nut 500 are put on in sequence. Then, the positioning strip 300 and the pressure cover 200 are connected with screws. The positioning strip 300 can be pre-connected to the positioning shaft 100, or the positioning strip 300 can be installed and connected after the pressure cover 200 is installed.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tooling for processing irregularly shaped moving contacts, characterized in that, Includes a positioning shaft (100), a pressure cap (200), and a positioning strip (300); The annular blank (10) and the pressure cap (200) are both fitted onto the positioning shaft (100), and the two ends of the annular blank (10) abut against the positioning shaft (100) and the pressure cap (200) respectively. The outer peripheral wall of the annular blank (10) is provided with a through groove (11) extending along the axial direction, and the positioning strip (300) is engaged in the through groove (11). The positioning strip (300) is connected to the positioning shaft (100) and the pressure cap (200).

2. The tooling for processing irregularly shaped moving contacts according to claim 1, characterized in that, The positioning bar (300) is provided with a guide hole (310), and the drill bit passes through the guide hole (310) to drill a hole in the annular blank (10).

3. The tooling for processing irregularly shaped moving contacts according to claim 2, characterized in that, It also includes an isolation sleeve (400), which is fitted onto the positioning shaft (100) and simultaneously inserted into the annular blank (10); The isolation sleeve (400) is provided with a clearance hole (410), and the clearance hole (410) corresponds one-to-one with the guide hole (310); The diameter of the clearance hole (410) is larger than the diameter of the guide hole (310).

4. The tooling for processing irregularly shaped moving contacts according to claim 3, characterized in that, The positioning shaft (100) is provided with a first milling plane (101), and the inner wall of the isolation sleeve (400) is provided with a second milling plane (401). The first milling plane (101) and the second milling plane (401) cooperate.

5. The tooling for processing irregularly shaped moving contacts according to claim 4, characterized in that, The positioning shaft (100) has a plurality of first slots (102) arranged around its own axis, and the pressure cap (200) has a plurality of second slots (201) arranged around its own axis. The first slot (102) and the second slot (201) correspond one-to-one, and the two ends of the positioning strip (300) are respectively engaged in the first slot (102) and the second slot (201).

6. The tooling for processing irregularly shaped moving contacts according to claim 5, characterized in that, The positioning strip (300) is provided with a first countersunk hole (320) and a second countersunk hole (330), the bottom surface of the first locking groove (102) is provided with a first threaded hole (103), and the bottom surface of the second locking groove (201) is provided with a second threaded hole (202). The first countersunk hole (320) and the first threaded hole (103) are engaged, and the second countersunk hole (330) and the second threaded hole (202) are engaged, thereby connecting the positioning strip (300) to the positioning shaft (100) and the pressure cap (200) by screws.

7. The tooling for processing irregularly shaped moving contacts according to claim 6, characterized in that, The inner wall of the pressure cap (200) is provided with a third milling plane (203), which cooperates with the first milling plane (101).

8. The tooling for processing irregularly shaped moving contacts according to claim 5, characterized in that, The positioning shaft (100) is provided with an annular boss (110), and the first locking groove (102) is opened on the annular boss (110) and passes through the annular boss (110) axially. One end of the annular blank (10) and the isolation sleeve (400) abuts against the annular boss (110), and the other end abuts against the pressure cap (200).

9. The tooling for machining irregularly shaped moving contacts according to any one of claims 1-8, characterized in that, Two parallel fourth milling planes (104) are provided on the positioning shaft (100). Two parallel fifth milling planes (204) are provided on the outer periphery of the pressure cap (200).

10. The tooling for machining irregularly shaped moving contacts according to any one of claims 1-8, characterized in that, It also includes a locking nut (500), which is fitted onto the positioning shaft (100) and threadedly connected to the positioning shaft (100); The locking nut (500) abuts against the gland (200).

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