Positioning tool for cutting a contact finger

Abstract

This utility model relates to the field of finger processing technology, and in particular to a positioning fixture for cutting fingers, aiming to solve the problem of unreliable positioning when cutting finger blanks. The positioning fixture for cutting fingers provided by this utility model includes a base and a pressure plate, which are detachably connected. The blank is abutted against the base and pressure plate at both ends along its own axis, and the blank is inserted into the base. The positioning fixture for cutting fingers provided by this utility model achieves locking and positioning of the blank by clamping it from both ends and inserting it into the base, avoiding inaccurate positioning due to side clamping and insufficient clamping force, thus improving positioning reliability and ensuring cutting accuracy.

Description

Technical Field

[0001] This utility model relates to the field of finger processing technology, and in particular to a positioning tool for cutting fingers. Background Technology

[0002] When machining the contact fingers, the annular blank needs to be cut into multiple independent contact fingers along the axial direction, usually using wire EDM. In actual machining, the existing clamping fixtures use side clamping, which interferes with the wire EDM process, preventing the cutting of all contact fingers. Furthermore, the lack of reliable positioning leads to a decrease in cutting accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a positioning fixture for cutting finger to solve the problem that existing fixtures cannot reliably position the finger.

[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 positioning fixture for cutting finger, including a base and a pressure cover, wherein the base and the pressure cover are detachably connected;

[0006] The blank part abuts against the base and the pressure cover at both ends along its own axis, and the blank part is inserted into the base.

[0007] Furthermore, the base has a first machining hole that extends along its own axis, and the cover has a second machining hole that extends along its own axis.

[0008] The first machined hole, the second machined hole, and the center through hole of the blank are coaxial;

[0009] The diameters of the first and second machined holes are smaller than the outer diameter of the blank.

[0010] Furthermore, the base is provided with a first insertion hole, the diameter of which is equal to the outer diameter of the blank.

[0011] The first insertion hole and the first machining hole form a first stepped surface, and the blank is inserted into the first insertion hole and abuts against the first stepped surface.

[0012] Furthermore, the inner wall of the first machining hole is provided with a positioning boss extending along its own axis, and the positioning boss is engaged with a through groove extending axially on the blank.

[0013] Furthermore, the plurality of positioning bosses are evenly distributed around the axis of the first machining hole.

[0014] Furthermore, the inner wall of the first machining hole is provided with a first clearance groove extending along its own axis, and the inner wall of the second machining hole is provided with a second clearance groove extending along its own axis.

[0015] Furthermore, the number of the first clearance groove and the second clearance groove are equal, and are equal to the number of fingers that can be cut from the blank;

[0016] The first clearance grooves are evenly distributed around the axis of the first machining hole;

[0017] The second clearance groove is evenly distributed around the axis of the second machining hole.

[0018] Furthermore, the pressure cap and the base are connected by screws, the base has a threaded hole, and the pressure cap has a connecting through hole;

[0019] After passing through the connecting through hole, the screw is inserted into the threaded hole and threadedly connected to the threaded hole.

[0020] Furthermore, the plurality of connecting through holes are evenly distributed around the axis of the gland;

[0021] The plurality of threaded holes are evenly distributed around the axis of the base.

[0022] Furthermore, the pressure cap is provided with a second insertion hole, the diameter of which is equal to the outer diameter of the blank.

[0023] The second insertion hole and the second machining hole form a second stepped surface, and the blank is inserted into the second insertion hole and abuts against the second stepped surface.

[0024] Based on the above technical solutions, the technical effects achieved by this utility model are as follows:

[0025] The positioning fixture for cutting fingers provided by this utility model includes a base and a pressure cover, which are detachably connected; the two ends of the blank part along its own axis respectively abut against the base and the pressure cover, and the blank part is inserted into the base.

[0026] The positioning fixture for cutting fingers provided by this utility model locks and positions the blank by pressing it from both ends and inserting it into the base. This avoids misalignment caused by inaccurate side clamping and insufficient clamping force, improves the reliability of positioning, and ensures cutting accuracy. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of the positioning fixture for cutting the finger provided in this embodiment of the utility model;

[0029] Figure 2 A cross-sectional schematic diagram of a positioning fixture for cutting finger provided in an embodiment of this utility model;

[0030] Figure 3 This is a schematic diagram of the base structure;

[0031] Figure 4 This is a top view of the base;

[0032] Figure 5 This is another structural diagram of the base;

[0033] Figure 6 This is a cross-sectional view of the base;

[0034] Figure 7 This is a schematic diagram of the gland structure;

[0035] Figure 8 This is a cross-sectional view of the gland;

[0036] Figure 9 This is a structural schematic diagram of the blank part;

[0037] Figure 10 This is a schematic diagram of the structure of a finger.

[0038] Icons: 100, base; 200, pressure cap; 110, first machined hole; 120, first insertion hole; 130, first stepped surface; 140, positioning boss; 150, first clearance groove; 160, threaded hole; 210, second machined hole; 220, second clearance groove; 230, connecting through hole; 240, second insertion hole; 250, second stepped surface; 10, blank; 11, center through hole; 12, through groove; 13, protruding ridge. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] When machining the contact fingers, the annular blank 10 needs to be cut axially into multiple independent contact fingers, such as... Figure 10 As shown, wire EDM is typically used. In actual machining, existing clamping fixtures, using side clamping, interfere with the wire EDM process, preventing the cutting of all the fingers and lacking reliable positioning, resulting in decreased cutting accuracy. Because the finger blank 10 is made of copper and has raised ridges 13 on its outer surface, as... Figure 9 As shown, it is not advisable to use a high clamping force, otherwise it is easy to deform and be damaged. Furthermore, due to insufficient clamping force and the small contact area caused by the protruding ridge 13, it is easy to deviate during the processing, which will affect the processing quality.

[0042] In view of this, the present invention provides a positioning fixture for cutting a finger, including a base 100 and a pressure cover 200, the base 100 and the pressure cover 200 being detachably connected; the two ends of the blank 10 along its own axis respectively abut against the base 100 and the pressure cover 200, and the blank 10 is inserted into the base 100.

[0043] The positioning fixture for cutting fingers provided by this utility model locks and positions the blank 10 by pressing the blank 10 from both ends and inserting the blank 10 into the base 100. This avoids misalignment caused by inaccurate side clamping and insufficient clamping force, improves the reliability of positioning, and ensures cutting accuracy.

[0044] The following combination Figures 1-10 The structure and shape of the positioning fixture for cutting the finger provided in this embodiment will be described in detail.

[0045] In this embodiment, the base 100 has a first machining hole 110 extending along its own axis, and the pressure cap 200 has a second machining hole 210 extending along its own axis; the first machining hole 110, the second machining hole 210, and the central through hole 11 of the blank 10 are coaxial; the diameters of the first machining hole 110 and the second machining hole 210 are smaller than the outer diameter of the blank 10. The first machining hole 110 and the second machining hole 210 are used for the electrode wire to pass through during wire cutting and to ensure the axial positioning of the blank 10, such as... Figure 2 , Figure 6 , Figure 8 As shown. In this embodiment, the outer diameter of the blank 10 refers to the dimension including the protruding ridge 13, that is, the outer diameter of the virtual circle enclosed by the protruding ridge 13.

[0046] In this embodiment, the base 100 is provided with a first insertion hole 120, the diameter of which is equal to the outer diameter of the blank 10; the first insertion hole 120 and the first machining hole 110 form a first stepped surface 130, such as... Figure 6 As shown; the blank 10 is inserted into the first insertion hole 120 and abuts against the first stepped surface 130, as... Figure 2 As shown. The first step surface 130 and the pressure cap 200 respectively abut against the two ends of the blank 10 to complete the axial positioning of the blank 10. The first insertion hole 120 is used to realize the radial positioning of the blank 10 to prevent the blank 10 from being displaced in the horizontal direction.

[0047] In this embodiment, the inner wall of the first machining hole 110 is provided with a positioning boss 140 extending along its own axis. The positioning boss 140 is engaged with a through groove 12 extending axially on the blank 10, such as... Figure 3 , Figure 4 , Figure 9 As shown. The engagement between the positioning boss 140 and the through groove 12 is used to prevent the blank 10 from rotating around its own axis, thereby avoiding uneven cutting, inconsistent finger width, or even finger cutting failure and scrap due to the rotation of the blank 10 during cutting.

[0048] Furthermore, the base 100 is provided with multiple positioning bosses 140 to improve the reliability of positioning. The multiple positioning bosses 140 are evenly distributed around the axis of the first machining hole 110.

[0049] In this embodiment, the inner wall of the first machining hole 110 is provided with a first clearance groove 150 extending along its own axis, and the inner wall of the second machining hole 210 is provided with a second clearance groove 220 extending along its own axis.

[0050] Specifically, the number of the first clearance groove 150 and the second clearance groove 220 is equal, and equal to the number of fingers that can be cut from the blank 10; the first clearance groove 150 is evenly distributed around the axis of the first machining hole 110; the second clearance groove 220 is evenly distributed around the axis of the second machining hole 210, such as... Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown.

[0051] It should be noted that the first machining hole 110 and the first insertion hole 120 form an annular boss, and the first clearance groove 150 also penetrates the annular boss.

[0052] In this embodiment, corresponding to the shape of the blank 10, the positioning boss 140 is misaligned with the first clearance groove 150 and the second clearance groove 220, and the positioning boss 140 is not cut during wire cutting.

[0053] When cutting the blank 10, the electrode wire moves radially along the blank 10 and cuts the protruding ridge 13 in half. The first clearance groove 150 and the second clearance groove 220 are provided to avoid the electrode wire, so as to ensure that the electrode wire does not contact the base 100 and the pressure cap 200 after cutting the protruding ridge 13, thereby reducing the wear of the electrode wire. It should be noted that... Figure 2 , Figure 6 , Figure 8 This is a cross-sectional view. For clarity, the structures of the first clearance groove 150 and the second clearance groove 220 are not shown.

[0054] In this embodiment, the pressure cap 200 and the base 100 are connected by screws. The base 100 has a threaded hole 160, and the pressure cap 200 has a connecting through hole 230. The screw passes through the connecting through hole 230 and is inserted into the threaded hole 160 and threadedly connected to the threaded hole 160.

[0055] Specifically, multiple connecting through holes 230 are evenly distributed around the axis of the pressure cap 200; multiple threaded holes 160 are evenly distributed around the axis of the base 100.

[0056] In this embodiment, to improve positioning reliability, a second insertion hole 240 is provided on the pressure cap 200. The diameter of the second insertion hole 240 is equal to the outer diameter of the blank 10. The second insertion hole 240 and the second machining hole 210 form a second stepped surface 250. The blank 10 is inserted into the second insertion hole 240 and abuts against the second stepped surface 250. Figure 8 As shown. The end of the blank 10 furthest from the base 100 is inserted into the second insertion hole 240 and abuts against the second stepped surface 250, as shown. Figure 2 As shown.

[0057] The positioning fixture for cutting the finger provided in this embodiment achieves horizontal positioning by engaging the blank 10 with the shaft holes of the base 100 and the pressure cap 200. It also fully disperses pressure through circumferential contact. The fixture contacts the protruding ridge 13 through the inner walls of the first insertion hole 120 and the second insertion hole 240, thereby increasing the base area. This avoids damage to the protruding ridge 13 when clamping from the side and prevents displacement caused by reducing the clamping force to avoid damage to the protruding ridge 13, thus ensuring reliable positioning.

[0058] Simultaneously, by clamping the blank 10 from both ends, the radial force on the blank 10 is changed to the axial force, enabling it to withstand greater clamping force. Furthermore, the first clearance groove 150 and the second clearance groove 220 avoid interference between the tooling and the electrode wire, improving the convenience of processing and reducing electrode wire wear.

[0059] 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 positioning tool for cutting a contact finger, characterized in that, It includes a base (100) and a pressure cap (200), the base (100) and the pressure cap (200) being detachably connected; The blank (10) abuts against the base (100) and the cover (200) at both ends along its own axis, and the blank (10) is inserted into the base (100).

2. The positioning tool for a cutting finger as claimed in claim 1, wherein The base (100) has a first machining hole (110) that runs through its own axis, and the cover (200) has a second machining hole (210) that runs through its own axis. The first machined hole (110), the second machined hole (210), and the center through hole (11) of the blank (10) are coaxial; The diameters of the first machining hole (110) and the second machining hole (210) are smaller than the outer diameter of the blank (10).

3. The positioning tool for a cutting finger as claimed in claim 2, wherein The base (100) is provided with a first insertion hole (120), the diameter of which is equal to the outer diameter of the blank (10); The first insertion hole (120) and the first machining hole (110) form a first stepped surface (130), and the blank (10) is inserted into the first insertion hole (120) and abuts against the first stepped surface (130).

4. The positioning tool for a cutting finger as claimed in claim 2, wherein The inner wall of the first machining hole (110) is provided with a positioning boss (140) extending along its own axis, and the positioning boss (140) is engaged with a through groove (12) extending along the axis on the blank (10).

5. The positioning tool for a cutting finger as claimed in claim 4, wherein The plurality of positioning bosses (140) are evenly distributed around the axis of the first machining hole (110).

6. The positioning tool for a cutting finger as claimed in claim 2, wherein The inner wall of the first machining hole (110) is provided with a first clearance groove (150) extending along its own axis, and the inner wall of the second machining hole (210) is provided with a second clearance groove (220) extending along its own axis.

7. The positioning tool for a cutting finger as claimed in claim 6, wherein The number of the first clearance groove (150) and the second clearance groove (220) are equal, and the number of fingers that can be cut from the blank (10) is equal; The first clearance groove (150) is evenly distributed around the axis of the first machining hole (110); The second clearance groove (220) is evenly distributed around the axis of the second machining hole (210).

8. The positioning tool for a cutting finger as claimed in claim 2, wherein The pressure cap (200) and the base (100) are connected by screws. The base (100) has a threaded hole (160), and the pressure cap (200) has a connecting through hole (230). After the screw passes through the connecting through hole (230), it is inserted into the threaded hole (160) and threadedly connected to the threaded hole (160).

9. The positioning tool for a cutting finger as claimed in claim 8, wherein The plurality of connecting through holes (230) are evenly distributed around the axis of the gland (200); The plurality of said threaded holes (160) are evenly distributed around the axis of the base (100).

10. The positioning tool for a cutting finger as claimed in any one of claims 2 to 9, wherein The pressure cap (200) is provided with a second insertion hole (240), the diameter of which is equal to the outer diameter of the blank (10); The second insertion hole (240) and the second machining hole (210) form a second stepped surface (250), and the blank (10) is inserted into the second insertion hole (240) and abuts against the second stepped surface (250).

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