A punching tool and its use method

Abstract

The present invention relates to the field of cable processing technology, and discloses a dimple punching tool and a method for using the same. The dimple punching tool comprises a pressure rod, a punch and a base. The top end of the pressure rod is connected to the punching head; the punch is installed on the bottom end of the pressure rod; the pressure rod is slidably installed on the base along a first direction, and the base is provided with a positioning portion, and the cable to be processed can be positioned and installed on the positioning portion, and the dimple punching position of the cable to be processed is located below the punch. The present invention solves the problem of product failure and ignition failure caused by poor assembly of spring components, while improving product assembly efficiency and assembly consistency, achieving improved dimple punching position accuracy of the cable to be processed, and achieving precise control of the dimple punching depth of the punch, thereby improving the dimple punching quality of the cable to be processed and improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cable processing, and in particular to a punching tool and a use method thereof. Background Art

[0002] The spring component is one of the important components of the aviation cable. During the use of the aviation cable, the spring component plays a pressing function to ensure that the aviation cable and the aviation igniter are in close contact and have good conduction. Figure 1 As shown, the first bushing 10 is provided on the cable, and the spring component 20 includes a second bushing 201 and a spring 202. The second bushing 201 is inserted into the first bushing 10, and the outer wall of the second bushing 201 inserted into one end of the first bushing 10 is provided with a first flange 2011, and the outer wall of the end away from the first bushing 10 is provided with a second flange 2022. The spring 202 is sleeved on the second bushing 201, and one end abuts against the first bushing 10, and the other end abuts against the second flange 2022 of the outer wall of the second bushing 201. The first bushing 10 is punched, and the punching point provides a limit for the first flange 2011, so that the spring component 20 is connected to the first bushing 10.

[0003] At present, the traditional process adopts the method of manual punching, but the punching depth and position are uncontrollable. If the punching is too deep or the punching position is too large, the mobility of the spring component 20 will be poor. If the punching is too shallow, the spring component 20 will fall off. The effective connection between the aviation cable and the aviation igniter cannot be guaranteed, resulting in ignition failure. In addition, the manual operation method requires high skills and low efficiency, which seriously restricts the production progress.

[0004] Based on this, there is an urgent need for a punching tool and a method of using the same to solve the above-mentioned problems. Summary of the invention

[0005] Based on the above, the purpose of the present invention is to provide a punching tool and a method of using the same, which solves the problem of product failure and ignition failure caused by poor assembly of spring components, while improving product assembly efficiency and assembly consistency, and achieving improved punching position accuracy of the cable to be processed, as well as precise control of the punching depth of the punch, thereby improving the punching quality of the cable to be processed and improving production efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] On the one hand, a die punching tool is provided, which cooperates with a terminal machine to punch a die on a cable to be processed, the terminal machine includes a punching head, the cable to be processed includes a first bushing and a spring component, the spring component includes a second bushing and a spring, the second bushing is inserted into the first bushing, the second bushing is inserted into the outer wall of one end of the first bushing and is provided with a first flange, and the outer wall away from the end of the first bushing is provided with a second flange; the spring is sleeved on the second bushing, and one end abuts against the first bushing, and the other end abuts against the second flange of the outer wall of the second bushing, the die punching tool includes:

[0008] A pressure rod, the top end of which is connected to the punch head;

[0009] A punch, mounted on the bottom end of the pressure rod;

[0010] The base is provided with a positioning portion, the cable to be processed can be positioned and installed on the positioning portion, and the punching position of the cable to be processed is located below the punch.

[0011] As a preferred technical solution of a punching tool, the positioning portion includes a semicircular groove and a square groove that are connected, the outer wall of the first bushing is stepped, the small diameter section of the first bushing can overlap the semicircular groove, and the large diameter section of the first bushing is located in the square groove;

[0012] The spring component can be placed in the square groove, and the spring drives the large diameter section of the first bushing to abut against the first side wall of the square groove, and drives the second bushing to abut against the second side wall of the square groove at one end away from the first bushing.

[0013] As an optimal technical solution for a punching tool, it also includes an auxiliary component, which includes a positioning shaft and a limit member, the limit member is fixed to the positioning shaft, the outer diameter of the positioning shaft is the same as the inner diameter of the second bushing, the positioning shaft is inserted into the inner hole of the second bushing, and one end of the limit member abuts against the end of the second bushing away from the first bushing, and the other end abuts against the second side wall of the square groove.

[0014] As an optimal technical solution for a punching tool, the outer wall of the limiting member is symmetrically provided with two limiting ribs, the limiting ribs are inclined from the root to the distal end, and the distal end is inclined toward the second side wall, and the distal end of the limiting rib abuts against the second side wall.

[0015] As an optimal technical solution for a punching tool, the side wall of the punch is provided with a positioning cut surface. When the large diameter section of the first bushing is installed in the square groove, the side wall portion of the large diameter section abuts against the first side wall of the square groove, and the positioning cut surface is flush with the first side wall. When the punch punches a hole in the cable to be processed, the side wall portion of the large diameter section abuts against the positioning cut surface.

[0016] As an optimal technical solution for a punching tool, the punch includes a fixing portion and a punching portion, the punching portion is conical, and the vertical distance between the end of the punching portion and the positioning section is a preset distance.

[0017] As an optimal technical solution for a punching tool, a first mounting hole is provided at the bottom end of the pressure rod, the fixing part is inserted into the first mounting hole, a threaded hole is provided on the side wall of the first mounting hole, and a first screw is threadedly connected to the threaded hole and the end thereof abuts against the side wall of the fixing part.

[0018] As a preferred technical solution of the punching tool, the fixing portion is provided with a positioning plane, the first screw is threadedly connected to the threaded hole and the end portion abuts against the positioning plane;

[0019] When the first screw abuts against the positioning plane, the positioning cut surface is flush with the first side wall.

[0020] As an optimal technical solution for a punching tool, a second mounting hole along a second direction is provided on one side of the pressure rod near the top end, and an avoidance groove is provided on the top wall of the second mounting hole. The punching head can be inserted into the second mounting hole along the second direction, and the top wall of the second mounting hole provides a limit in the first direction for the punching head so that the pressure rod can be hung on the punching head, and the first direction is perpendicular to the second direction.

[0021] On the other hand, a method for using a dimple punching tool is provided, using the dimple punching tool described in any of the above schemes, comprising the following steps:

[0022] S1. The punching head of the terminal machine moves to a preset position, and the distance between the lowest point of the punching head and the punching position is measured;

[0023] S2, processing the pressure rod of a preset size according to the spacing;

[0024] S3, selecting punches of different types to punch the cables to be processed at different punching depths and / or different punching positions;

[0025] S4, assembling the punching tool and hanging the pressing rod on the punching head;

[0026] S5, installing the cable to be processed on the base;

[0027] S6. The punching head drives the pressure rod to move, so as to drive the punch to punch the punching position.

[0028] The beneficial effects of the present invention are:

[0029] The present invention provides a dimple punching tool, wherein the top of a pressure rod is connected to a punch head, a punch head is installed at the bottom, and the pressure rod is slidably installed on a base along a first direction, and the base provides a guide for the moving direction of the pressure rod, thereby increasing the moving accuracy of the pressure rod and thus increasing the dimple punching accuracy of the punch head. The cable to be processed is positioned and installed on the positioning part of the base, and the position of the dimple punching of the cable to be processed is located below the punch head, thereby improving the position accuracy of the dimple punching. The terminal machine drives the pressure rod to move downward through the punch head, thereby driving the punch head to punch the position of the dimple punching. Since the punch head is driven by the terminal machine, the lifting stroke of the punch head is fixed each time, the punch head has high dimple punching accuracy, and the depth of the dimple punching can be accurately controlled. At this time, a dimple punching point is formed on the first bushing, and the dimple punching point provides a limit for the first flange, so that the spring component is connected to the first bushing. The present invention solves the problem of product failure and ignition failure caused by poor assembly of the spring component, and at the same time improves the assembly efficiency and assembly consistency of the product, thereby improving the position accuracy of the dimple punching of the cable to be processed, and accurately controlling the dimple punching depth of the punch head, thereby improving the dimple punching quality of the cable to be processed and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0031] Figure 1 It is a cross-sectional view of a cable to be processed provided in the prior art;

[0032] Figure 2 It is a structural schematic diagram of a punching tool provided in a specific embodiment of the present invention;

[0033] Figure 3 It is a structural exploded diagram of a punching tool provided in a specific embodiment of the present invention;

[0034] Figure 4 It is a structural schematic diagram of a compression rod provided in a specific embodiment of the present invention;

[0035] Figure 5 It is a partial structural schematic diagram of a punching tool provided in a specific embodiment of the present invention;

[0036] Figure 6It is a schematic diagram of the structure of a punch provided in a specific embodiment of the present invention.

[0037] The following are marked in the figure:

[0038] 10. first bushing; 101. large diameter section; 102. small diameter section; 20. spring component; 201. second bushing; 2011. first flange; 2022. second flange; 202. spring;

[0039] 1. Pressure rod; 11. First mounting hole; 12. Threaded hole; 13. Second mounting hole; 14. Avoidance groove; 15. Slide groove; 2. Punch; 21. Positioning section; 22. Fixing part; 221. Positioning plane; 23. Stamping part; 3. Base; 31. Positioning part; 311. Semicircular groove; 312. Square groove; 4. Auxiliary component; 41. Positioning shaft; 42. Limiting piece; 421. Limiting rib; 5. First screw; 6. Second screw; 7. Guide block; 71. Guide rib. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] like Figure 1-Figure 3 As shown, this embodiment provides a dimple punching tool, which cooperates with a terminal machine to punch dimples on a cable to be processed, the terminal machine includes a punching head, the cable to be processed includes a first bushing 10 and a spring component 20, the first bushing 10 is installed on the cable, the spring component 20 includes a second bushing 201 and a spring 202, the second bushing 201 is inserted into the first bushing 10, the outer wall of the second bushing 201 inserted into one end of the first bushing 10 is provided with a first flange 2011, and the outer wall away from the end of the first bushing 10 is provided with a second flange 2022; the spring 202 is sleeved on the second bushing 201, and one end abuts against the first bushing 10, and the other end abuts against the second flange 2022 of the outer wall of the second bushing 201. The dimple punching tool includes a pressure rod 1, a punch 2 and a base 3. The top end of the pressure rod 1 is connected to the punch head; the punch 2 is installed on the bottom end of the pressure rod 1; the pressure rod 1 is slidably installed on the base 3 along the first direction, and the base 3 is provided with a positioning part 31. The cable to be processed can be positioned and installed on the positioning part 31, and the punching position of the cable to be processed is located below the punch 2.

[0045] When in use, the top of the pressure rod 1 is connected to the punch head, and the bottom end is installed with the punch 2, and the pressure rod 1 is slidably installed on the base 3 along the first direction, and the base 3 provides a guide for the moving direction of the pressure rod 1, thereby increasing the moving accuracy of the pressure rod 1, and then increasing the punching accuracy of the punch 2. The cable to be processed is positioned and installed on the positioning portion 31 of the base 3, and the punching position of the cable to be processed is located below the punch 2, which improves the accuracy of the punching position. Then the terminal machine drives the pressure rod 1 to move downward through the punch head, and then drives the punch 2 to punch the punching position. Since the punch 2 is driven by the terminal machine, the lifting stroke of the punch 2 is fixed each time, the punch 2 has high punching accuracy, and can accurately control the punching depth. At this time, a punching point is formed on the first bushing 10, and the punching point provides a limit for the first flange 2011 to connect the spring component 20 to the first bushing 10. This embodiment solves the problem of product failure and ignition failure caused by poor assembly of the spring component 20, while improving product assembly efficiency and assembly consistency, achieving improved punching position accuracy of the cable to be processed, and achieving precise control of the punching depth of the punch 2, thereby improving the punching quality of the cable to be processed and improving production efficiency.

[0046] Preferably, if Figure 2 and Figure 4As shown, two sides of the pressure rod 1 are provided with slide grooves 15, and two guide blocks 7 are symmetrically provided on the side wall of the base 3 on which the pressure rod 1 is installed. Guide ribs 71 are provided on the opposite side walls of the two guide blocks 7. The guide ribs 71 of the two guide blocks 7 are respectively slidably connected to the slide grooves 15 on both sides of the pressure rod 1. The two guide ribs 71 provide guidance for the movement of the pressure rod 1, ensuring that the punch 2 is always on the same axis when moving up and down, and the pressure rod 1 and the base 3 are easy to disassemble and assemble. In this embodiment, each guide block 7 is fixed to the base 3 by three second screws 6.

[0047] In this embodiment, Figure 2 As shown, a second mounting hole 13 along the second direction is provided on one side near the top end of the pressure rod 1, and an avoidance groove 14 is provided on the top wall of the second mounting hole 13. The avoidance groove 14 is U-shaped, and the punching head can be inserted into the second mounting hole 13 along the second direction, and the top wall of the second mounting hole 13 provides a limit in the first direction for the punching head, so that the pressure rod 1 can be hung on the punching head, and the first direction is perpendicular to the second direction. In this embodiment, the first direction is the vertical direction and the second direction is the horizontal direction, which is convenient for disassembly and assembly between the pressure rod 1 and the punching head, simple to operate, and improves work efficiency.

[0048] Preferably, if Figure 2 and Figure 3 As shown, the positioning portion 31 includes a connected semicircular groove 311 and a square groove 312, the outer wall of the first bushing 10 is stepped, the cable and the small diameter section 102 of the first bushing 10 can be overlapped in the semicircular groove 311, so as to improve the stability of the placement of the cable to be processed, and the large diameter section 101 of the first bushing 10 is located in the square groove 312; the spring component 20 can be placed in the square groove 312, and the spring 202 drives the large diameter section 101 of the first bushing 10 to abut against the first side wall of the square groove 312, and drives the second bushing 201 away from one end of the first bushing 10 to abut against the second side wall of the square groove 312, the square groove 312 realizes the positioning and installation of the first bushing 10 and the spring component 20, and the first side wall and the second side wall of the square groove 312 are limited to realize the pre-assembly between the first bushing 10 and the spring component 20, so that the relative position of the first bushing 10 and the second bushing 201 meets the processing requirements, and the processing is simple and the processing accuracy is high.

[0049] Preferably, if Figure 2 and Figure 4As shown, the die punching tool also includes an auxiliary component 4, which includes a positioning shaft 41 and a stopper 42. The stopper 42 is fixed to the positioning shaft 41. The outer diameter of the positioning shaft 41 is the same as the inner diameter of the second bushing 201. The positioning shaft 41 is inserted into the inner hole of the second bushing 201. One end of the stopper 42 abuts against the end of the second bushing 201 away from the first bushing 10, and the other end abuts against the second side wall of the square groove 312. The second bushing 201 and the first bushing 10 can be adjusted to be coaxially preassembled by the positioning shaft 41 to improve the processing quality. The stopper 42 controls the insertion length of the positioning shaft 41, and the spring component 20 abuts against the second side wall through the stopper 42. The stopper 42 provides pre-tightening for the spring component 20.

[0050] Since it is necessary to punch the cable to be processed multiple times along the circumferential direction, but the circumferential shape of the cable to be processed is the same, it is not convenient for the operator to identify the flipping angle. Preferably, the outer wall of the limiter 42 is symmetrically provided with two limit ribs 421, and the limit rib 421 is tilted from the root to the distal end, and the distal end is tilted toward the second side wall, and the distal end of the limit rib 421 abuts against the second side wall. On the one hand, when the cable to be processed is flipped after punching the dents, the auxiliary component 4 is flipped at the same time as the cable to be processed. By observing the rotation angle of the limit rib 421, the rotation angle of the cable to be processed can be known, thereby improving the flipping accuracy. On the other hand, since the limit rib 421 is tilted from the root to the distal end, and the distal end is tilted toward the second side wall, an operating groove is formed between the limit rib 421 and the positioning shaft 41, which is convenient for the operator to insert his fingers. When it is necessary to place or remove the cable to be processed, the operator inserts his fingers into the operating groove to compress the spring component 20, which is convenient for placing or removing the cable to be processed and improving the quality of the cable to be processed.

[0051] Since the punching hole is located in the small diameter section 102 of the first bushing 10 and is close to the large diameter section 101, in order to prevent the punch 2 from interfering with the large diameter section 101, a positioning cut surface 21 is provided on the side wall of the punch 2, and the positioning cut surface 21 provides a clearance for the large diameter section 101.

[0052] When the cable to be processed is installed in the positioning portion 31, the large diameter section 101 of the first bushing 10 is driven by the spring 202, and the side wall portion of the large diameter section 101 abuts against the first side wall of the square groove 312. Since only the bottom of the large diameter section 101 abuts against the first side wall, it is easy to cause the large diameter section 101 to deflect, affecting the processing quality. Preferably, when the large diameter section 101 of the first bushing 10 is installed in the square groove 312, the side wall portion of the large diameter section 101 abuts against the first side wall of the square groove 312, and the positioning cut surface 21 is flush with the first side wall. When the punch 2 punches the cable to be processed, the side wall portion of the large diameter section 101 abuts against the positioning cut surface 21, so that the part of the large diameter section 101 near the bottom abuts against the first side wall, and the part near the top abuts against the positioning cut surface 21. The positioning cut surface 21 also plays a positioning role for the first bushing 10, improving the installation stability of the cable to be processed.

[0053] Furthermore, if Figure 2 and Figure 5 As shown, the punch 2 includes a fixing portion 22 and a stamping portion 23. The stamping portion 23 is conical, and the vertical distance between the end of the stamping portion 23 and the positioning cut surface 21 is a preset distance. In this embodiment, the preset distance is the distance between the punching position and the large diameter section 101 that meets the requirements, and needs to be consistent with the design requirements. Before punching, the large diameter section 101 of the first bushing 10 may be deflected under the drive of the spring 202. During punching, when the conical stamping portion 23 contacts the top of the large diameter section 101, the posture of the large diameter section 101 can be adjusted under the interference of the stamping portion 23, and the side wall of the large diameter section 101 can be guided to be flush with the positioning cut surface 21. During the downward movement of the punch 2, the large diameter section 101 is guided to abut the positioning cut surface 21 to avoid the skewness of the punching point.

[0054] In this embodiment, a first mounting hole 11 is provided at the bottom end of the pressure rod 1, and the fixing part 22 is inserted into the first mounting hole 11. A threaded hole 12 is provided on the side wall of the first mounting hole 11. The first screw 5 is threadedly connected to the threaded hole 12 and the end thereof abuts against the side wall of the fixing part 22, thereby fixing the punch 2 to the bottom end of the pressure rod 1, thereby facilitating the replacement and installation of the punch 2.

[0055] Preferably, the fixing portion 22 is provided with a positioning plane 221, and the first screw 5 is threadedly connected to the threaded hole 12 and the end portion abuts against the positioning plane 221, thereby increasing the contact area fixed to the first screw 5 and improving the installation strength of the punch 2; when the first screw 5 abuts against the positioning plane 221, the positioning section 21 is flush with the first side wall, thereby realizing automatic adjustment of the installation angle of the punch 2 and making the positioning section 21 automatically flush with the first side wall.

[0056] In this embodiment, the punch 2 is made of cold-working mold steel Cr12MoV and is heat-treated to HRC58-62 to increase the hardness of the workpiece and extend its service life. The pressure rod 1 is made of cold-working mold steel Cr12MoV and is heat-treated to HRC50-55 to increase the hardness of the workpiece and is bluing-treated to prevent oxidation from causing jamming when moving up and down. The guide block 7 is also bluing-treated to prevent oxidation.

[0057] This embodiment also provides a method for using the dimple punching tool, which uses the dimple punching tool, including the following steps:

[0058] S1. Move the punch head of the terminal machine to the preset position and measure the distance between the lowest point of the punch head and the punching position;

[0059] S2. Processing a pressure rod 1 of a preset size according to the spacing; since the terminal machine has a low precision in adjusting the movement stroke, in this embodiment, first detect the spacing between the lowest point of the punch head and the punching position, and then process the pressure rod 1 of a preset size according to the spacing. The preset size is designed according to usage requirements.

[0060] S3. Select punches 2 of different types to punch different depths and / or different positions of the cables to be processed. Since the movement stroke adjustment accuracy of the terminal machine is low, when switching to different types of cables to be processed, the punch 2 is replaced with a matching one according to the punching depth and position, without the need to readjust the movement stroke of the terminal machine, thereby improving work efficiency and punching accuracy.

[0061] S4, assemble the punching tooling and hang the pressure rod 1 on the punching head;

[0062] S5. Install the cable to be processed on the base 3. Before installing the cable to be processed, the punch head needs to drive the pressure rod 1 and the punch 2 to rise.

[0063] S6, the punch head drives the pressure rod 1 to move, so as to drive the punch head 2 to punch the punching position. In this process, the punch head drives the pressure rod 1 and the punch head 2 to punch the punching position of the cable to be processed.

[0064] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A die-punching tool, used in conjunction with a terminal machine to perform die-punching on a cable to be processed, the terminal machine comprising a punching head, the cable to be processed comprising a first bushing (10) and a spring component (20), the spring component (20) comprising a second bushing (201) and a spring (202), the second bushing (201) being inserted into the first bushing (10), the outer wall of the second bushing (201) being inserted into one end of the first bushing (10) being provided with a first flange (2011), and the outer wall of the end facing away from the first bushing (10) being provided with a second flange (2022); the spring (202) being sleeved on the second bushing (201), with one end abutting against the first bushing (10), and the other end abutting against the second flange (2022) on the outer wall of the second bushing (201), characterized in that: The punching tool comprises: A pressure rod (1), the top end of the pressure rod (1) being connected to the punch head; A punch (2) is mounted on the bottom end of the pressure rod (1); A base (3), the pressure rod (1) being slidably mounted on the base (3) along a first direction, the base (3) being provided with a positioning portion (31), the cable to be processed being positionably mounted on the positioning portion (31), and the punching position of the cable to be processed being located below the punch (2); The positioning portion (31) comprises a semicircular groove (311) and a square groove (312) which are connected to each other; the outer wall of the first bushing (10) is stepped; the small diameter section (102) of the first bushing (10) can overlap the semicircular groove (311); and the large diameter section (101) of the first bushing (10) is located in the square groove (312); The spring component (20) can be placed in the square groove (312), and the spring (202) drives the large diameter section (101) of the first bushing (10) to abut against a first side wall of the square groove (312), and drives the second bushing (201) to abut against a second side wall of the square groove (312) at one end away from the first bushing (10); The auxiliary component (4) further comprises a positioning shaft (41) and a stopper (42), wherein the stopper (42) is fixed to the positioning shaft (41), the outer diameter of the positioning shaft (41) is the same as the inner diameter of the second bushing (201), the positioning shaft (41) is inserted into the inner hole of the second bushing (201), and one end of the stopper (42) abuts against an end of the second bushing (201) away from the first bushing (10), and the other end abuts against the second side wall of the square groove (312); The side wall of the punch (2) is provided with a positioning cut surface (21); when the large diameter section (101) of the first bushing (10) is installed in the square groove (312), the side wall portion of the large diameter section (101) abuts against the first side wall of the square groove (312); the positioning cut surface (21) is flush with the first side wall; when the punch (2) punches a hole in the cable to be processed, the side wall portion of the large diameter section (101) abuts against the positioning cut surface (21).

2. The punching tool according to claim 1, characterized in that: The outer wall of the limiting member (42) is symmetrically provided with two limiting ribs (421), the limiting ribs (421) are arranged obliquely from the root to the distal end, and the distal end is inclined toward the second side wall, and the distal end of the limiting rib (421) abuts against the second side wall.

3. The punching tool according to claim 1, characterized in that: The punch (2) comprises a fixing portion (22) and a punching portion (23); the punching portion (23) is conical, and the vertical distance between the end of the punching portion (23) and the positioning section (21) is a preset distance.

4. The punching tool according to claim 3, characterized in that: A first mounting hole (11) is provided at the bottom end of the pressure rod (1), the fixing portion (22) is inserted into the first mounting hole (11), a threaded hole (12) is provided on the side wall of the first mounting hole (11), and a first screw (5) is threadedly connected to the threaded hole (12) and an end portion thereof abuts against the side wall of the fixing portion (22).

5. The punching tool according to claim 4, characterized in that: The fixing portion (22) is provided with a positioning plane (221), and the first screw (5) is threadedly connected to the threaded hole (12) and an end portion thereof abuts against the positioning plane (221); When the first screw (5) abuts against the positioning plane (221), the positioning cut surface (21) is flush with the first side wall.

6. The punching tool according to claim 1, characterized in that: A second mounting hole (13) along a second direction is provided on one side of the pressure rod (1) near the top end, and a avoidance groove (14) is provided on the top wall of the second mounting hole (13). The punch head can be inserted into the second mounting hole (13) along the second direction, and the top wall of the second mounting hole (13) provides a limit for the punch head in the first direction, so that the pressure rod (1) is hung on the punch head, and the first direction is perpendicular to the second direction.

7. A method for using a punching tool, characterized in that: The die-punching tool as claimed in any one of claims 1 to 6 comprises the following steps: S1. The punching head of the terminal machine moves to a preset position, and the distance between the lowest point of the punching head and the punching position is measured; S2, machining the pressure rod (1) into a preset size according to the spacing; S3, selecting punches (2) of different models to punch the cables to be processed at different punching depths and / or different punching positions; S4, assembling the punching tool and hanging the pressing rod (1) on the punching head; S5, installing the cable to be processed on the base (3); S6. The punching head drives the pressure rod (1) to move, so as to drive the punch (2) to punch a hole at the punching position.

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