Tool for processing sliding contact finger for grounding structure in high-voltage switch

Abstract

The utility model provides a tool for processing a sliding contact finger for a grounding structure in a high-voltage switch, which relates to the field of fixing tools and comprises a disc base, a boss and a pressing piece. The boss is fixed on the upper surface of the disc base; the pressing piece comprises a stud, a spring, a pressing plate and a fixing bolt; a pressing groove is formed in the disc base; the stud is vertically fixed in the pressing groove; the spring sleeves the outer side of the stud; a through hole is formed in the pressing plate; the lead-in part of the fixing bolt penetrates through the through hole and is fixed in the screw hole of the stud; two limiting holes are formed in the disc base; two limiting nails are arranged at the bottom of the pressing plate; and when the sliding contact finger is mounted on the tool, the limiting nail passes through the mounting hole and extends into the limiting hole. According to the utility model, the problem that the processing equipment deviates from the processing position of the sliding contact finger if the sliding contact finger is fixed unstably when the sliding chute is processed in the prior art can be solved; the sliding contact finger is in a stable state in the machining process.

Description

Technical Field

[0001] This utility model relates to the field of fixed tooling, and in particular to a tooling for machining sliding contact fingers for grounding structures in high-voltage switches. Background Technology

[0002] High-voltage switches are commonly used to open and close conductive circuits. The grounding structure within a high-voltage switch is crucial for ensuring the safe and stable operation of the power system. For example, Chinese patent application number 202222660875.7 discloses a grounding structure for a high-voltage switchgear, comprising a bracket, a sliding contact, a vertical busbar, a secondary grounding busbar, and a through busbar. The bracket is fixedly connected to the switchgear housing by bolts. The upper and lower ends of the sliding contact are bent, and a contact ball is located at the bent upper end of the sliding contact. The contact ball of the sliding contact contacts the circuit breaker trolley. The sliding contact is fixedly connected to the vertical busbar via the bracket, the vertical busbar is fixedly connected to the through busbar, and the through busbar is fixedly connected to the secondary grounding busbar.

[0003] Among them, sliding finger touch Figure 4 As shown, it includes a lower bending piece 01, a vertical connecting piece 02, and an upper bending piece 03. The vertical connecting piece 02 is located between the lower bending piece 01 and the upper bending piece 03, and connects the lower bending piece 01 and the upper bending piece 03. The upper bending piece 03 has a ball bearing hole 031, and a cylindrical groove 0311 is formed in the ball bearing hole 031. The lower bending piece 01 has two mounting holes 011.

[0004] In the aforementioned patent, the sliding contact finger serves to connect the circuit breaker and the secondary grounding busbar. The contact ball needs to be installed inside the ball hole, and a groove needs to be opened inside the ball hole for the sliding plate to slide. The contact ball is fixed to the sliding plate. Therefore, the accuracy of the groove affects whether the contact ball can play a stable sliding role within the ball hole. Consequently, when processing the groove, if the sliding contact finger is not securely fixed, and the processing equipment deviates from the required processing position of the sliding contact finger, it will cause a deviation in the accuracy of the groove, thereby affecting the subsequent assembly and use of the sliding contact finger. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a tooling for processing sliding contacts for grounding structures in high-voltage switches. This tooling solves the problem that, in the prior art, if the sliding contact is not securely fixed during the processing of the slide groove, the processing equipment may deviate from the required processing position of the sliding contact, leading to deviations in the accuracy of the slide groove and affecting the subsequent assembly and use of the sliding contact. This tooling ensures that the sliding contact remains stable during the processing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a tooling for machining sliding contact fingers for grounding structures in high-voltage switches, comprising a disc base, a boss, and a clamping component;

[0008] If the disc base is horizontally positioned, the boss is fixed to the upper surface of the disc base; the boss is located at the center of the disc base.

[0009] The clamping component includes a stud, a spring, a pressure plate, and a fixing bolt; a clamping groove is formed on the disc base; the stud is vertically fixed in the clamping groove; the spring is sleeved on the outside of the stud; the pressure plate is horizontally positioned above the stud; the top of the spring is in contact with the bottom of the pressure plate, and the bottom of the spring is in contact with the bottom of the clamping groove; the pressure plate is positioned above the disc base; the pressure plate faces the boss; a through hole is formed on the pressure plate for the fixing bolt to pass through; the guide portion of the fixing bolt passes through the through hole and is fixed in the threaded hole of the stud;

[0010] The disc base is also provided with two limiting holes; the two limiting holes are located between the clamping member and the boss; the clamping member, the limiting holes and the boss are located on the same straight line, and this straight line is taken as the first straight line;

[0011] The boss is rectangular; the edges of the cross-section of the boss are perpendicular to the first straight line.

[0012] The bottom of the pressure plate is provided with two limiting pins;

[0013] When the sliding contact finger is installed on the fixture, the upper bent piece of the sliding contact finger contacts the upper surface of the boss, the vertical connecting piece of the sliding contact finger contacts the side wall of the boss, the lower bent piece of the sliding contact finger contacts the upper surface of the disc base, the limiting pin passes through the mounting hole and extends into the limiting hole, and the pressure plate presses the sliding contact finger tightly onto the disc base.

[0014] The tooling provided by this utility model for processing sliding contact fingers for grounding structures in high-voltage switches preferably includes a first groove on the top of the boss; a second groove on the side wall of the boss; a third groove on the upper surface of the disc base; the first groove, the second groove, and the third groove being connected; the first groove, the second groove, and the third groove being located on the same straight line; and the limiting hole being located within the third groove.

[0015] When the sliding contact finger is installed on the fixture, the upper bent piece is located in the first groove, the vertical connecting piece is located in the second groove, and the lower bent piece is located in the third groove.

[0016] The tooling provided by this utility model for processing sliding contact fingers for grounding structures in high-voltage switches preferably further includes an extension portion; the extension portion includes a vertical extension plate and a horizontal extension plate; the bottom of the vertical extension plate is fixed to the top of the pressure plate; the top of the vertical extension plate is fixed to the bottom of the horizontal extension plate;

[0017] When the sliding contact finger is installed on the tooling, the vertical extension plate is in contact with the vertical connecting piece, and the horizontal extension plate is in contact with the upper bending piece.

[0018] The tooling provided by this utility model for processing sliding contact fingers for grounding structures in high-voltage switches preferably has a through hole that is a waist hole; the extension direction of the through hole is the same as the extension direction of the first straight line.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] The present invention provides a tooling for machining sliding contacts for grounding structures in high-voltage switches, comprising a disc base, a boss, and a clamping component. Since there is a height difference between the lower and upper bent pieces of the sliding contact, and the ball bearing hole is located on the upper bent piece, if a groove needs to be machined into the ball bearing hole, a support body is required to support the contact position between the upper bent piece and the cutting tool. Therefore, if the disc base is horizontally positioned, and the boss is fixed to the upper surface of the disc base, with the boss located at the center of the disc base, when the sliding contact is mounted on the tooling, the upper bent piece of the sliding contact contacts the upper surface of the boss, thus allowing the boss to act as a support for machining the upper bent piece, preventing the sliding contact from bending during machining and affecting the finished product.

[0021] To fix the sliding contact finger to the disc base in the vertical direction, the clamping components specifically include a stud, a spring, a pressure plate, and a fixing bolt. The pressure plate is horizontally positioned above the disc base, facing the boss. When the sliding contact finger is placed on the upper surface of the disc base, the pressure plate presses the lower bent piece against the disc base. Since the lower and upper bent pieces are connected by a vertical connecting piece, the pressure plate vertically limits the movement of the upper bent piece. Furthermore, to fix the pressure plate to the disc base, the stud is fixed to the disc base, with the pressure plate above it. The pressure plate has a through hole for the fixing bolt to pass through, and the bolt's guide portion passes through the through hole and is fixed in the stud's screw hole. Even further, if the stud is directly fixed to the disc... The upper surface of the base causes the pressure plate to be too high, making it impossible to press the lower bent piece against the disc base. To address this, a pressing groove is provided on the disc base, and a stud is vertically fixed in the pressing groove. This reduces the fixed height of the pressure plate, allowing the pressure plate to press the lower bent piece against the disc base after the fixing bolt is tightened in the stud. Because the pressure plate is close to the upper surface of the disc base, it is difficult for installers to place the sliding contact finger between the pressure plate and the disc base. Therefore, a spring is sleeved on the outside of the stud, with the top of the spring against the bottom of the pressure plate and the bottom of the pressing groove against the bottom of the groove. This allows the spring to support the height of the pressure plate, increasing the distance between the pressure plate and the disc base, thus making it easier for installers to place the sliding contact finger between the pressure plate and the disc base.

[0022] To fix the sliding contact finger to the disc base horizontally, specifically, the disc base also has two limiting holes. These two limiting holes are located between the clamping member and the boss, and the clamping member, limiting holes, and boss are on the same straight line. This straight line is taken as the first straight line. When the sliding contact finger is placed on the disc base, the two mounting holes on the sliding contact finger can correspond to the two limiting holes. Furthermore, the boss is made into a cuboid shape, and the edges of the boss's cross-section are perpendicular to the first straight line, so that the junction of the upper bent piece and the vertical connecting piece can fit against the edges of the boss. This design effectively positions the sliding contact finger during installation, reducing the time cost for installers. Furthermore, the bottom of the pressure plate is equipped with two limiting pins. When the pressure plate is pressed down, the limiting pins pass through the mounting holes and insert into the limiting holes, thereby limiting the lower bending piece in the horizontal direction. Since the lower and upper bending pieces are connected by a vertical connecting piece, the limiting pins limit the upper bending piece in the horizontal direction, and also limit the rotational freedom of the pressure plate, preventing the sliding contact finger from slipping off the disc base due to the rotation of the pressure plate.

[0023] The horizontal and vertical directions mentioned above refer to the directions when the disc base is set horizontally;

[0024] In existing technologies for machining sliding grooves, if the sliding contact is not securely fixed, the machining equipment may deviate from the required machining position of the sliding contact, leading to deviations in the accuracy of the sliding groove and affecting the subsequent assembly and use of the sliding contact. To address this, the tooling provided by this invention for machining sliding contacts used in the grounding structure of high-voltage switches uses a pressure plate and components that fix the pressure plate to create a vertical limit on the sliding contact. A limit pin passes through the mounting hole and is inserted into the limit hole to create a horizontal limit on the sliding contact, thereby stably fixing the sliding contact to the disc base. When the disc base is fixed to the machine tool spindle, the sliding contact remains stable during machining. Attached Figure Description

[0025] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the tooling for processing sliding contact fingers for grounding structures in high-voltage switches, provided in Embodiment 1 of this utility model.

[0027] Figure 2 This is a schematic diagram of the main structure of the tooling for processing the sliding contact finger of the grounding structure in a high-voltage switch, provided in Embodiment 1 of this utility model.

[0028] Figure 3 yes Figure 2 A cross-sectional schematic diagram.

[0029] Figure 4 This is a three-dimensional structural diagram of a sliding finger in existing technology. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0031] Example 1:

[0032] like Figures 1-3 As shown, Embodiment 1 of this utility model provides a tooling for processing sliding contact fingers for grounding structures in high-voltage switches, including a disc base 1, a boss 2, and a clamping member 3;

[0033] If the disc base 1 is set horizontally, the boss 2 is fixed to the upper surface of the disc base 1; the boss 2 is located at the center of the disc base 1.

[0034] The clamping component 3 includes a stud 31, a spring 32, a pressure plate 33, and a fixing bolt 34; a clamping groove 11 is provided on the disc base 1; the stud 31 is vertically fixed in the clamping groove 11; the spring 32 is sleeved on the outside of the stud 31; the pressure plate 33 is horizontally arranged and located above the stud 31; the top of the spring 32 is in contact with the bottom of the pressure plate 33, and the bottom of the spring 32 is in contact with the bottom of the clamping groove 11; the pressure plate 33 is located above the disc base 1; the pressure plate 33 faces the boss 2; a through hole 331 for the fixing bolt 34 to pass through is provided on the pressure plate 33; the guide part of the fixing bolt 34 passes through the through hole 331 and is fixed in the screw hole of the stud 31;

[0035] The disc base 1 also has two limiting holes 12; the two limiting holes 12 are located between the clamping member 3 and the boss 2; the clamping member 3, the limiting holes 12 and the boss 2 are located on the same straight line, and this straight line is taken as the first straight line;

[0036] The boss 2 is rectangular; the edges of the cross-section of the boss 2 are perpendicular to the first straight line;

[0037] The bottom of the pressure plate 33 is provided with two limiting pins 332;

[0038] When the sliding contact finger is installed on the fixture, the upper bent piece 03 of the sliding contact finger contacts the upper surface of the boss 2, the vertical connecting piece 02 of the sliding contact finger contacts the side wall of the boss 2, the lower bent piece 01 of the sliding contact finger contacts the upper surface of the disc base 1, the limiting pin 332 passes through the mounting hole 011 and extends into the limiting hole 12, and the pressure plate 33 presses the sliding contact finger tightly onto the disc base 1.

[0039] When using the tooling provided in Embodiment 1 of this utility model for processing the sliding contact finger of the grounding structure in a high-voltage switch, loosen the fixing bolt 34 so that the spring 32 lifts the pressure plate 33, creating a gap between the pressure plate 33 and the disc base 1. This gap is used to place the sliding contact finger. The upper bent piece 03 of the sliding contact finger contacts the upper surface of the boss 2, the vertical connecting piece 02 of the sliding contact finger contacts the side wall of the boss 2, and the lower bent piece 01 of the sliding contact finger contacts the upper surface of the disc base 1. Align the two mounting holes 011 of the lower bent piece 01 with the two limiting holes 12. At this time, the center of the ball bearing hole 031 of the upper bent piece 03 coincides with the center of the disc base 1. Press down the pressure plate 33, and the limiting pin 332 passes through the mounting hole 011 and inserts into the plate. Inside the limiting hole 12, the pressure plate 33 presses the sliding contact finger onto the disc base 1. The pressure plate 33 compresses the spring 32, and the bottom of the pressure plate 33 contacts the top of the stud 31. The fixing bolt 34 is tightened into the stud 31. The disc base 1 is fixed to the machine tool spindle, so that the axis of the disc base 1 coincides with the axis of the machine tool spindle. The side with the fixed sliding contact finger faces the tool. The machine tool spindle is rotated, causing the disc base 1 to rotate, thereby driving the sliding contact finger to rotate, so that the tool can machine the sliding groove 0311 on the sliding contact finger. If it is necessary to remove the sliding contact finger, the disc base 1 is removed from the machine tool spindle, the fixing bolt 34 is loosened, and the spring 32 naturally pushes up the pressure plate 33, creating a gap between the pressure plate 33 and the disc base 1. The installer removes the sliding contact finger from this gap.

[0040] This utility model provides a tooling for machining a sliding contact for a grounding structure in a high-voltage switch, comprising a disc base 1, a boss 2, and a clamping member 3. Since there is a height difference between the lower bent piece 01 and the upper bent piece 03 of the sliding contact, and the ball bearing hole 031 is on the upper bent piece 03, if a groove 0311 needs to be machined into the ball bearing hole 031, the contact position between the upper bent piece 03 and the cutting tool requires support. Therefore, if the disc base 1 is horizontally positioned, and the boss 2 is fixed to the upper surface of the disc base 1, with the boss 2 located at the center of the disc base 1, when the sliding contact is mounted on the tooling, the upper bent piece 03 of the sliding contact contacts the upper surface of the boss 2, thus allowing the boss 2 to act as a support for machining the upper bent piece 03, preventing the sliding contact from bending during machining and affecting the finished product.

[0041] To fix the sliding contact finger to the disc base 1 in the vertical direction, the clamping component 3 specifically includes a stud 31, a spring 32, a pressure plate 33, and a fixing bolt 34. The pressure plate 33 is horizontally positioned above the disc base 1, facing the boss 2. When the sliding contact finger is placed on the upper surface of the disc base 1, the pressure plate 33 presses the lower bent piece 01 against the disc base 1. Since the lower bent piece 01 and the upper bent piece 03 are connected by a vertical... The connecting piece 02 is connected, thereby limiting the upper bending piece 03 in the vertical direction by the pressure plate 33; further, in order to fix the pressure plate 33 to the disc base 1, the stud 31 is fixed on the disc base 1, the pressure plate 33 is located above the stud 31, and the pressure plate 33 has a through hole 331 for the fixing bolt 34 to pass through, the guide part of the fixing bolt 34 passes through the through hole 331 and is fixed in the screw hole of the stud 31; further still, if the stud 31 is directly fixed Fixing the pressure plate 33 to the upper surface of the disc base 1 would result in an excessively high height, making it impossible to press the lower bent piece 01 against the disc base 1. Therefore, a pressing groove 11 is provided on the disc base 1, and a stud 31 is vertically fixed within the pressing groove 11. This reduces the fixing height of the pressure plate 33, allowing the pressure plate 33 to press the lower bent piece 01 against the disc base 1 after the fixing bolt 34 is tightened into the stud 31. Since the surfaces are close together, it is difficult for installers to place the sliding contact finger between the pressure plate 33 and the disc base 1. Therefore, a spring 32 is sleeved on the outside of the stud 31. The top of the spring 32 is in contact with the bottom of the pressure plate 33, and the bottom of the spring 32 is in contact with the bottom of the pressing groove 11. This allows the spring 32 to support the height of the pressure plate 33, thereby increasing the distance between the pressure plate 33 and the disc base 1, which makes it easier for installers to place the sliding contact finger between the pressure plate 33 and the disc base 1.

[0042] To fix the sliding contact finger to the disc base 1 horizontally, specifically, the disc base 1 is provided with two limiting holes 12. These two limiting holes 12 are located between the clamping member 3 and the boss 2. The clamping member 3, the limiting holes 12, and the boss 2 are on the same straight line, which is taken as the first straight line. When the sliding contact finger is placed on the disc base 1, the two mounting holes 011 on the sliding contact finger can correspond to the two limiting holes 12. Furthermore, the boss 2 is made into a cuboid shape, and the edges of the cross-section of the boss 2 are perpendicular to the first straight line, so that the junction of the upper bent piece 03 and the vertical connecting piece 02 can be in contact with the edges of the boss 2, thereby achieving the desired alignment of the sliding contact finger. Effective positioning of the moving contact finger during installation reduces the time cost for installers when installing the sliding contact finger; furthermore, the bottom of the pressure plate 33 is provided with two limiting pins 332. When the pressure plate 33 is pressed down, the limiting pins 332 pass through the mounting hole 011 and are inserted into the limiting hole 12, thereby limiting the lower bending piece 01 in the horizontal direction. Since the lower bending piece 01 and the upper bending piece 03 are connected by the vertical connecting piece 02, the limiting pins 332 limit the upper bending piece 03 in the horizontal direction, and also limit the rotational freedom of the pressure plate 33, so as to avoid the sliding contact finger from slipping off the disc base 1 due to the rotation of the pressure plate 33.

[0043] The horizontal and vertical directions mentioned above refer to the directions when the disc base 1 is set horizontally;

[0044] In existing technologies, if the sliding contact is not securely fixed during the machining of the slide groove, the machining equipment may deviate from the required machining position of the sliding contact, resulting in a deviation in the accuracy of the slide groove and affecting the subsequent assembly and use of the sliding contact. To address this, the tooling for machining the sliding contact of the grounding structure in a high-voltage switch, as provided in Embodiment 1 of this utility model, is used. The pressure plate 33 and the components that fix the pressure plate 33 form a vertical limit on the sliding contact. The limiting pin 332 passes through the mounting hole 011 and is inserted into the limiting hole 12 to form a horizontal limit on the sliding contact. This achieves stable fixing of the sliding contact on the disc base 1. When the disc base 1 is fixed to the machine tool spindle, the sliding contact is kept in a stable state during the machining process.

[0045] like Figure 1 and Figure 3As shown in Embodiment 1 of this utility model, the tooling for processing the sliding contact finger of the grounding structure in a high-voltage switch is preferably provided with a first groove 21 on the top of the boss 2, a second groove 22 on the two side walls of the boss, and a third groove 13 on the upper surface of the disc base 1. The first groove 21, the second groove 22, and the third groove 13 are connected and located on the same straight line, so that the first groove 21, the second groove 22, and the third groove 13 form a positioning groove. By placing the upper bent piece 03 in the first groove 21 and the vertical connecting piece 02 in the first groove 21, the tooling for processing the sliding contact finger of the grounding structure in a high-voltage switch is preferably provided with a first groove 21 on the top of the boss 2, a second groove 22 on the side walls of the boss 2, and a third groove 13 on the upper surface of the disc base 1. The second groove 22 places the lower bent piece 01 in the third groove 13, so that the edge of the sliding contact finger is in contact with the inner wall of the positioning groove, and the limiting hole 12 is located in the third groove 13. When the sliding contact finger is placed in the positioning groove, the limiting hole 12 and the mounting hole 011 are naturally aligned, thereby improving the installation efficiency of the sliding contact finger on the tooling. Furthermore, since the tool processes the upper bent piece 03, and the clamping member 3 mainly acts on the lower bent piece 01, when the tool contacts the upper bent piece 03, the upper bent piece 03 may be bent by force. Therefore, the edge of the sliding contact finger is in contact with the inner wall of the positioning groove, which can improve the fixing stability of the sliding contact finger when it is installed on the tooling.

[0046] like Figures 1-3 As shown in Embodiment 1 of this utility model, the tooling for processing the sliding contact finger of the grounding structure in a high-voltage switch is preferably further improved by including an extension 4 to enhance the stability of the sliding contact finger when it is installed on the tooling. The extension 4 includes a vertical extension plate 41 and a horizontal extension plate 42. The bottom of the vertical extension plate 41 is fixed to the top of the pressure plate 33, and the top of the vertical extension plate 41 is fixed to the bottom of the horizontal extension plate 42. When the sliding contact finger is installed on the tooling, the vertical extension plate 41 is in contact with the vertical connecting piece 02, and the vertical extension plate 41 presses the vertical connecting piece 02 against the side wall of the boss 2. The horizontal extension plate 42 is in contact with the upper bending piece 03, and the horizontal extension plate 42 presses the upper bending piece 03 against the top of the boss 2. This achieves the pressing effect of the clamping member 3 on the vertical connecting piece 02 and the upper bending piece 03, thereby improving the stability of the sliding contact finger when it is installed on the tooling.

[0047] like Figure 1 and Figure 3As shown in Embodiment 1 of this utility model, the tooling for processing sliding contact fingers for grounding structures in high-voltage switches is preferably provided in the following way: Since the vertical extension plate 41 needs to be in contact with the vertical connecting piece 02, there is only a gap between the vertical extension plate 41 and the boss 2 for placing the vertical connecting piece 02. The small gap makes it difficult to conveniently insert the sliding contact finger. Therefore, the through hole 331 is made into a waist hole, and the extension direction of the through hole 331 is the same as the extension direction of the first straight line, so that the pressure plate 33 can adjust the gap between the vertical extension plate 41 and the boss 2 along the extension direction of the through hole 331, thereby facilitating the installer to install the sliding contact finger onto the tooling.

[0048] In summary, the tooling provided by this utility model for processing sliding contacts for grounding structures in high-voltage switches can solve the problem that if the sliding contact is not fixed securely when processing the slide groove in the prior art, the processing equipment may deviate from the required processing position of the sliding contact, which will cause deviation in the accuracy of the slide groove and thus affect the subsequent assembly and use of the sliding contact; thus, it can ensure that the sliding contact is in a stable state during the processing.

[0049] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0050] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A tooling for machining sliding contact fingers for grounding structures in high-voltage switches, characterized in that, Includes a disc base, a boss, and a clamping component; If the disc base is horizontally positioned, the boss is fixed to the upper surface of the disc base; the boss is located at the center of the disc base. The clamping component includes a stud, a spring, a pressure plate, and a fixing bolt; a clamping groove is formed on the disc base; the stud is vertically fixed in the clamping groove; the spring is sleeved on the outside of the stud; the pressure plate is horizontally positioned above the stud; the top of the spring is in contact with the bottom of the pressure plate, and the bottom of the spring is in contact with the bottom of the clamping groove; the pressure plate is positioned above the disc base; the pressure plate faces the boss; a through hole is formed on the pressure plate for the fixing bolt to pass through; the guide portion of the fixing bolt passes through the through hole and is fixed in the threaded hole of the stud; The disc base is also provided with two limiting holes; the two limiting holes are located between the clamping member and the boss; the clamping member, the limiting holes and the boss are located on the same straight line, and this straight line is taken as the first straight line; The boss is rectangular; the edges of the cross-section of the boss are perpendicular to the first straight line. The bottom of the pressure plate is provided with two limiting pins; When the sliding finger is installed on the fixture, the upper bent piece of the sliding finger contacts the upper surface of the boss, the vertical connecting piece of the sliding finger contacts the side wall of the boss, the lower bent piece of the sliding finger contacts the upper surface of the disc base, the limiting pin passes through the mounting hole and extends into the limiting hole, and the pressure plate presses the sliding finger tightly onto the disc base.

2. The tooling for machining sliding contact fingers for grounding structures in high-voltage switches as described in claim 1, characterized in that, The top of the boss has a first groove; the side wall of the boss has a second groove; the upper surface of the disc base has a third groove; the first groove, the second groove and the third groove are connected; the first groove, the second groove and the third groove are located on the same straight line; the limiting hole is located in the third groove; When the sliding contact finger is installed on the fixture, the upper bent piece is located in the first groove, the vertical connecting piece is located in the second groove, and the lower bent piece is located in the third groove.

3. The tooling for machining sliding contact fingers for grounding structures in high-voltage switches as described in claim 1, characterized in that, It also includes an extension portion; the extension portion includes a vertical extension plate and a horizontal extension plate; the bottom of the vertical extension plate is fixed to the top of the pressure plate; the top of the vertical extension plate is fixed to the bottom of the horizontal extension plate; When the sliding contact finger is installed on the tooling, the vertical extension plate is in contact with the vertical connecting piece, and the horizontal extension plate is in contact with the upper bending piece.

4. The tooling for machining sliding contact fingers for grounding structures in high-voltage switches as described in claim 3, characterized in that, The through hole is a waist hole; the extension direction of the through hole is the same as the extension direction of the first straight line.

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