A bridge clamp for hot extrusion die wire cutting and method of using the same

Abstract

The application discloses a bridge clamp for hot extrusion die wire cutting and a use method thereof, and belongs to the technical field of hot extrusion dies. The clamp comprises a base, a supporting seat, a fixing seat, a supporting piece for supporting a workpiece, a locking mechanism, the locking mechanism comprising a first locking piece and a second locking piece, and a processing piece, the processing piece comprising a cutting area and a tool opening. The bridge clamp for hot extrusion die wire cutting can adapt to dies of different shapes and sizes through the design of the supporting piece. An operator only needs to simply adjust the positions of the fixing seat and the supporting piece, so that the clamping of dies of various specifications can be realized. The flexibility is improved, the clamp does not need to be extruded during the use process, no scratches and marks are generated, the service life and machining precision are greatly improved, and the clamp does not need to be removed when the angle of the die needs to be adjusted, and manual adjustment is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot extrusion die, in particular to a bridge clamp for hot extrusion die wire cutting and a using method thereof. BACKGROUND

[0002] In modern manufacturing industry, hot extrusion forming technology is widely used in the processing of metals and plastics, especially in high-precision fields such as automobiles, aerospace and electronics, and the design and manufacture of hot extrusion dies are crucial. In the process of die machining, wire cutting technology is widely used because it can achieve high-precision cutting of complex shapes. The wire cutting machine uses metal wire as an electrode to cut workpieces through spark discharge, and its advantages are high cutting precision and strong adaptability.

[0003] In the process of machining a micro-channel pipe die (also known as a diagonal rib pipe die), the convex part of the male die needs to be cut diagonally by wire electrical discharge machining. The die needs to be stood up and tilted at a certain angle for machining. The commonly used clamps are flat clamps or clamps that fix one side. These clamps often need to be clamped with concentrated pressure, which can scratch the die or leave marks on the surface of the die, affecting the service life and machining precision of the die. Moreover, when adjusting the tilt angle of the die, the operation is complex, and the entire clamp needs to be disassembled for slight adjustment, which is very inconvenient. Therefore, we propose a bridge clamp for hot extrusion die wire cutting and a using method thereof. SUMMARY

[0004] The purpose of the present application is to provide a bridge clamp for hot extrusion die wire cutting and a using method thereof to solve the problems of existing extrusion clamps that can easily scratch or leave marks on the machined die, affecting the service life and machining precision of the die, and the complex operation of adjusting the tilt angle of the die, which requires the entire clamp to be disassembled for slight adjustment, which is very inconvenient.

[0005] To solve the above technical problems, the present application provides a bridge clamp for hot extrusion die wire cutting and a using method thereof, which includes a base;

[0006] A support seat is arranged above the base;

[0007] A fixed seat is arranged between the support seats;

[0008] A support member is arranged above the fixed seat for supporting the workpiece;

[0009] A locking mechanism includes a first locking member for limiting the fixed seat, and a second locking member for fixing the support member;

[0010] The machining piece comprises a cutting area and a tool opening arranged on one side of the machining piece.

[0011] The support base, the fixing base and the support are arranged in pairs.

[0012] The support comprises a wire passing hole penetrating from top to bottom and communicating with the outside.

[0013] The support is made of high-strength material and comprises two opposite surfaces forming an angle in the range of 120°-150°, wherein the first surface is fixed by the second locking member and the second surface is in contact with the machining piece for supporting the machining piece.

[0014] Preferably, the outer surface of the support is rough and dense fine tooth surface for increasing the friction between the second locking member and the machining piece.

[0015] Preferably, the base comprises a first sliding groove arranged on the surface thereof and a stopper arranged at both ends of the first sliding groove.

[0016] Preferably, the support base comprises a pair of first sliding blocks arranged at the bottom of both ends thereof, a second sliding groove arranged on one side of the support base and a plurality of limiting holes arranged on the support base.

[0017] The first sliding blocks are matched with the first sliding groove.

[0018] Preferably, the fixing base comprises a pair of second sliding blocks arranged at the bottom of both ends thereof and a plurality of fixing holes arranged on the fixing base.

[0019] The second sliding blocks are matched with the second sliding groove.

[0020] Preferably, the second locking member comprises a fixed plate and a pair of connecting members penetrating through the fixing holes and the fixed plate for fastening the fixed plate.

[0021] The outer surface of the fixed plate is also rough and dense fine tooth surface for increasing the friction between the support.

[0022] The application further provides a use method of the bridge clamp for hot extrusion die wire cutting.

[0023] Step S1: machining the tool opening on the machining piece.

[0024] Step S2: installing the support on the fixing base by the second locking member, wherein the connecting members do not need to be locked.

[0025] Step S3: Adjust and detect the position of the support component using the electrode wire detection method, making it parallel to the Y-axis of the wire EDM lathe. After adjustment, lock the connector.

[0026] Step S4: Place the workpiece on the support, which is supported by both sides. The outer ring of the workpiece is in contact with the upper surface of the support. At this time, the workpiece is parallel to the X and Z axes of the lathe and perpendicular to the Y axis of the lathe.

[0027] Step S5: Angle calibration. Adjust the angle of the workpiece by adjusting the electrode wire to make the cutting edge section parallel to the electrode wire.

[0028] Step S6: After the fixture and workpiece are installed, start the lathe to begin wire cutting of the cutting area.

[0029] Preferably, step S1 is performed on a CNC milling machine;

[0030] The blade setting edge is parallel to the direction in which wire cutting needs to be performed in the cutting area, and is used for blade setting with the electrode wire.

[0031] Preferably, the electrode wire detection method in step S3 includes,

[0032] S3-1: Move the remote-controlled electrode wire to one end of the support edge, energize the electrode wire, fix the Y-axis and Z-axis of the lathe, and adjust the X-axis of the lathe so that the electrode wire slowly contacts the support. When the two make contact, an electric spark will be generated. Manually stop the contact at the moment of contact.

[0033] S3-2: Slightly separate the two by a constant distance m along the Y-axis, fix the X-axis and Z-axis of the lathe, and move the electrode wire along the Y-axis to the other end of the support edge;

[0034] S3-3: Adjust the X-axis of the lathe so that the electrode wire slowly contacts the support again. After slowly moving this constant distance m, a small amount of sparks will still be generated as before. At this time, the position detection of the support is completed.

[0035] S3-4: Adjust the support and repeat steps S3-1 to S3-3 multiple times to finally achieve parallelism between both ends and the Y-axis. After alignment, lock the connector.

[0036] Preferably, the electrode wire adjustment method in step S5 is as follows:

[0037] S5-1: First, rotate the workpiece to a position where the cross-section of the tool setting edge is parallel to the electrode wire, and then remotely control the electrode wire to move it along the wire feed path to the cross-section of the tool setting edge.

[0038] S5-2: With the electrode wire energized, fix the Y and Z axes of the lathe, and adjust the X axis of the lathe so that the electrode wire slowly contacts the cross section of the tool setting edge. By observing and continuously moving the electrode wire closer to and away from the tool setting edge, manually adjust the workpiece angle so that the electrical discharge size of the upper and lower ends of the tool setting edge is consistent. Finally, make the electrode wire parallel to the tool setting edge, and the tool setting is completed.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. The bridge-type clamp for wire cutting of hot extrusion dies of the present invention can adapt to dies of different shapes and sizes through the design of the support component. The operator only needs to adjust the position of the fixed seat and the support component to clamp dies of various specifications. This not only improves flexibility, but also eliminates the need to squeeze the clamp during use, thus avoiding scratches and marks. The service life and processing accuracy are greatly improved. When the die angle needs to be adjusted, there is no need to remove the clamp, making manual adjustment more convenient.

[0041] 2. The method of using a bridge-type fixture for wire EDM of hot extrusion dies according to the present invention involves precise adjustment of the support and detection of the electrode wire. By visually observing the electric sparks generated when the electrode wire contacts the two ends of the cutting edge of the support and the workpiece, the degree of contact between the electrode wire and the electrode wire is judged, thereby adjusting the angle between the support and the workpiece to ensure that the support and the workpiece are parallel to the axes of the wire EDM machine. This method greatly improves the accuracy of wire EDM and reduces errors caused by improper workpiece positioning. Attached Figure Description

[0042] Figure 1 This is a comparison image of the bridge-type fixture for wire cutting of hot extrusion dies provided by the present invention before and after die processing;

[0043] Figure 2 This is a schematic diagram illustrating the working principle of a bridge-type fixture for wire cutting of hot extrusion dies provided by the present invention;

[0044] Figure 3 This is a cross-sectional view of a bridge-type fixture for wire cutting of hot extrusion dies provided by the present invention;

[0045] Figure 4 This is a schematic diagram of the overall structure of a bridge-type fixture for wire cutting of hot extrusion dies provided by the present invention;

[0046] In the diagram: 1. Base; 101. First slide groove; 102. Stop; 2. Support base; 201. First slider; 202. Second slide groove; 203. Limiting hole; 3. Fixing base; 301. Second slider; 302. Fixing hole; 4. Support; 401. Wire feed port; 5. Locking mechanism; 501. First locking element; 502. Second locking element; 502a. Fixing plate; 502b. Connecting element; 6. Machining part; 601. Cutting area; 602. Tool setting edge. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Example 1

[0051] This invention provides a bridge-type fixture for wire cutting of hot extrusion dies. Please refer to [link to relevant documentation]. Figures 1-4The system includes a base 1; a support 2, which is disposed above the base 1; a fixed base 3, which is mounted between the support bases 2; a support member 4, which is disposed above the fixed base 3 and is used to support the workpiece; a locking mechanism 5, which includes a first locking member 501 for limiting the fixed base 3 and a second locking member 502 for fixing the support member 4; and a processing part 6, which includes a cutting area 601 and a cutting edge 602 disposed on one side of the processing part 6.

[0052] The support base 2, the fixing base 3, and the support member 4 are all configured as a pair. The support member 4 includes a wire feed port 401 that runs through it from top to bottom and communicates with the outside. The support member 4 is made of high-strength material and consists of two opposing surfaces forming an angle within the range of 120° to 150°. The first surface is fixed by the second locking member 502, and the second surface contacts the workpiece 6 to support the workpiece 6.

[0053] The base 1 includes a first slide groove 101 disposed on its surface and stop members 102 disposed at both ends of the first slide groove 101; the support base 2 includes a pair of first sliders 201 disposed at the bottom of both ends of the support base 2, a second slide groove 202 disposed on one side of the support base 2, and a plurality of limiting holes 203 opened on the support base 2; the first sliders 201 cooperate with the first slide groove 101; the fixing base 3 includes a pair of second sliders 301 opened at the bottom of both ends of the support base 3, and a plurality of fixing holes 302 opened on the fixing base 3; the second sliders 301 cooperate with the second slide groove 202.

[0054] The second locking member 502 includes a fixing plate 502a and a pair of connecting members 502b passing through the fixing hole 302 and the fixing plate 502a for fastening the fixing plate 502a; the outer surface of the fixing plate 502a is also rough and densely toothed to increase the friction between it and the support member 4.

[0055] It should be noted that this fixture is used to machine the protruding part of the male mold of a miniature channel tube mold (also known as a ribbed tube mold), requiring the use of wire electrical discharge machining to create multiple grooves, such as... Figure 1 As shown, the left side is before processing and the right side is after processing. The depth and angle of the groove are limited. Since the wire cutting direction of the EDM machine can only be vertically downward, the fixture not only needs to play a positioning role, but also needs to facilitate the adjustment of the angle.

[0056] Preferably, the base 1, support 2, and fixed base 3 are all made of high-strength square steel. The base 1 is fixedly installed on the worktable of the wire cutting machine tool, and a first slide groove 101 is opened through it on its surface. There are stop members 102 at both ends of the first slide groove 101 to limit the movement range of the first slider 201 under the support 2 in the first slide groove, prevent it from sliding out of the two ends of the slide groove, and ensure stability and safety.

[0057] Preferably, the support base 2 can slide on the first slide groove 101 to adjust the distance according to the length of the fixed base 3. The support base 2 includes a first slider 201 fixedly installed at the bottom and a second slide groove 202 opened on the side. The second slide groove 202 cooperates with the second slider 301 on the fixed base 3, so that the fixed base 3 can slide on the support base 2 to adjust the distance between the two side support members 4 according to the size of the mold. The top of the support base 2 is also provided with a uniformly arrayed limiting hole 203. The limiting hole 203 penetrates the support base 2 and is used to install the first locking member 501 to limit the fixed base 3. The number of limiting holes 203 can be increased or decreased according to the specification range requirements of the mold processing.

[0058] Preferably, the upper surface of the fixing base 3 also has two rows of evenly arranged fixing holes 302, which penetrate the fixing base 3. The support member 4 can be installed through the cooperation between the connector 502b and the fixing holes 302. In this embodiment, the connector 502b is a pair of bolts and nuts. The fixing plate 502a is a rectangular metal plate. Each end of the fixing plate 502a has a racetrack-shaped bolt groove. The long bolt passes through the fixing holes 302 and the fixing plate 502a in sequence and is finally fixed with a nut. The racetrack-shaped bolt groove can provide a certain amount of movement space for the fixing plate, so that the position of the fixing plate can be finely adjusted during installation to better align and adapt to the bolts and nuts. The outer surface of the fixing plate 502a adopts a rough and dense fine tooth surface design, which can effectively increase the friction between the fixing plate and the support member 4, thereby improving the stability and reliability of the connection. During installation, the approximate position of the support member 4 can be fixed first through the connector without locking it. After the position of the support member 4 is adjusted, it can be fixed again to ensure the accuracy and stability of the connection.

[0059] Preferably, the outer surface of the support member 4 is also rough and densely toothed to increase the friction between the support member 4 and the second locking member 502 and the machined member 6, thereby improving the locking stability of the second locking member 502 and the stability of the machined member 6 placed on the support member 4.

[0060] Preferably, the wire feed port 401 passes through the support member 4 to facilitate the setting of the electrode wire and the tool setting 602. During tool setting, the electrode wire needs to pass through the support member 4 and contact the tool setting 602. However, the width of the support member 4 is often designed to take into account the application of molds of various specifications. Therefore, when the support member 4 is used for some thinner molds, the electrode wire needs to pass through the wire feed port 401 for tool setting, thereby meeting diverse processing requirements and enabling it to adapt to molds of different specifications.

[0061] It should be noted that wire electrical discharge machining uses a metal wire as an electrode to cut the workpiece by electro-corrosion through electrical discharge. During the machining process, the electrode wire does not directly contact the workpiece, and the movement of the electrode wire does not cause the position of the mold to change. Moreover, since the mold material is usually H13 mold steel, which has a high density and mass, even if the electrode wire does not completely contact the mold due to corrosion, it is difficult to overcome the friction between the mold and the support 4. Therefore, it is entirely feasible to fix the mold using this bridge-type fixture.

[0062] In summary, the bridge-type clamp for wire cutting of hot extrusion dies of the present invention can adapt to dies of different shapes and sizes through the design of the support component. The operator only needs to simply adjust the position of the fixed seat and the support component to clamp dies of various specifications. This not only improves flexibility, but also eliminates the need to squeeze the clamp during use, thus preventing scratches and marks. The service life and processing accuracy are greatly improved. When the die angle needs to be adjusted, there is no need to remove the clamp, making manual adjustment more convenient.

[0063] Example 2

[0064] This invention provides a method for using a bridge-type fixture for wire EDM of hot extrusion dies. Please refer to [link to relevant documentation]. Figures 1-4 It includes the following steps:

[0065] Step S1: Machining the tool setting edge 602 on the workpiece 6;

[0066] Step S2: Install the support 4 on the fixed base 3 using the second locking member 502. At this time, the connecting member 502b does not need to be locked.

[0067] Step S3: Adjust and detect the position of support 4 by electrode wire detection method so that it is parallel to the Y-axis of the wire EDM lathe. After adjustment, lock connector 502b.

[0068] Step S4: Place the workpiece 6 on the support 4, which is supported by both sides of the support 4. The outer ring of the workpiece 6 is in contact with the upper surface of the support 4. At this time, the workpiece 6 is parallel to the X and Z axes of the lathe and perpendicular to the Y axis of the lathe.

[0069] Step S5: Angle calibration. Adjust the angle of the workpiece 6 by adjusting the electrode wire so that the cross section of the cutting edge 602 is parallel to the electrode wire.

[0070] Step S6: After the fixture and workpiece are installed, start the lathe to begin wire cutting of the cutting area 601.

[0071] Step S1 is machined on a CNC milling machine; the tool setting edge 602 is parallel to the direction in which wire cutting needs to be performed in the cutting area 601, and is used for tool setting with the electrode wire.

[0072] The electrode wire detection method in step S3 includes:

[0073] S3-1: Move the remote control electrode wire to one end of the edge of the support 4, energize the electrode wire, fix the Y-axis and Z-axis of the lathe, and adjust the X-axis of the lathe so that the electrode wire slowly contacts the support 4. When the two make contact, an electric spark will be generated. Manually stop the contact at the moment of contact.

[0074] S3-2: Slightly separate the two by a constant distance m along the Y-axis, fix the X-axis and Z-axis of the lathe, and move the electrode wire along the Y-axis to the other end of the edge of the support 4;

[0075] S3-3: Adjust the X-axis of the lathe so that the electrode wire slowly contacts the support 4 again. After slowly moving this constant distance m, a small amount of sparks will still be generated as before. At this time, the position detection of the support 4 is completed.

[0076] S3-4: Adjust support 4 and repeat steps S3-1 to S3-3 multiple times to finally achieve parallelism between both ends and the Y-axis. After alignment, lock connector 502b.

[0077] The electrode wire adjustment method in step S5 is as follows:

[0078] S5-1: First, rotate the workpiece 6 to a position where the cross section of the tool setting edge 602 is parallel to the electrode wire, and then remotely control the electrode wire to move along the wire feed 401 to approach the cross section of the tool setting edge 602.

[0079] S5-2: With the electrode wire energized, fix the Y and Z axes of the lathe, and adjust the X axis of the lathe so that the electrode wire slowly contacts the cross section of the tool setting edge 602. By observing and continuously moving the electrode wire closer to and away from the tool setting edge, adjust the angle of the workpiece 6 so that the electrical discharge size of the upper and lower ends of the tool setting edge 602 is consistent. Finally, make the electrode wire parallel to the tool setting edge 602, and the tool setting is completed.

[0080] In summary, the bridge-type fixture for wire EDM of hot extrusion dies of the present invention uses precise adjustment of the support and detection of the electrode wire. By visually observing the electric sparks generated when the electrode wire contacts the two ends of the cutting edge of the support and the workpiece, the degree of contact between the electrode wire and the electrode wire is judged, thereby adjusting the angle between the support and the workpiece to ensure that the support and the workpiece are parallel to the axes of the wire EDM machine. This method greatly improves the accuracy of wire EDM and reduces errors caused by improper workpiece positioning.

[0081] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A method of using a bridge-type fixture for wire cutting of hot extrusion dies, the bridge-type fixture comprising a base (1); a support base (2) disposed above the base (1); a fixed base (3) disposed between the support bases (2); a support member (4) disposed above the fixed base (3) for supporting a workpiece; a locking mechanism (5) comprising a first locking member (501) for limiting the fixed base (3) and a second locking member (502) for fixing the support member (4); and a workpiece (6). The workpiece (6) includes a cutting area (601) and a cutting edge (602) disposed on one side of the workpiece (6); the support base (2), the fixing base (3), and the support member (4) are all configured as a pair; the support member (4) includes a wire feed port (401) that runs through it from top to bottom and communicates with the outside; the support member (4) is made of high-strength material and is composed of two opposing surfaces forming an angle in the range of 120° to 150°, wherein the first surface is fixed by the second locking member (502) and the second surface contacts the workpiece (6) to support the workpiece (6); Its features are, Includes the following steps: Step S1: Machining a tool setting edge (602) on the workpiece (6), the tool setting edge (602) being parallel to the direction of wire cutting to be performed in the cutting area (601) and used for tool setting with the electrode wire; Step S2: Install the support (4) on the fixed base (3) by means of the second locking member (502), at this time the connecting member (502b) does not need to be locked; Step S3: Adjust and detect the position of the support (4) by using the electrode wire detection method, so that it is parallel to the Y-axis of the wire EDM lathe. After the adjustment is completed, lock the connector (502b). Step S4: Place the workpiece (6) on the support (4) and support it together with the two support members (4). The outer ring of the workpiece (6) is in contact with the upper surface of the support member (4). At this time, the workpiece (6) is parallel to the X and Z axes of the lathe and perpendicular to the Y axis of the lathe. Step S5: Angle calibration. Adjust the angle of the workpiece (6) by adjusting the electrode wire to make the cross section of the tool setting edge (602) parallel to the electrode wire. Specifically, S5-1: Rotate the workpiece (6) to a position where the cross section of the tool setting edge (602) is parallel to the electrode wire. Remotely control the electrode wire to move it along the wire feed (401) to approach the cross section of the tool setting edge (602). S5-2: Power on the electrode wire, fix the Y-axis and Z-axis of the lathe, and adjust the X-axis of the lathe so that the electrode wire slowly contacts the cross section of the tool setting edge (602). By observing and continuously moving the electrode wire closer to and away from the tool setting edge, manually adjust the angle of the workpiece (6) so that the electric spark size of the upper end and the lower end of the tool setting edge (602) is consistent. Finally, make the electrode wire parallel to the tool setting edge (602) and the tool setting is completed. Step S6: After the fixture and workpiece are installed, start the lathe to begin wire cutting of the cutting area (601).

2. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 1, characterized in that, The electrode wire detection method in step S3 includes... S3-1: Move the remote control electrode wire to one end of the edge of the support (4), energize the electrode wire, fix the Y-axis and Z-axis of the lathe, adjust the X-axis of the lathe so that the electrode wire slowly contacts the support (4), and an electric spark will be generated when the two come into contact. Manually stop the contact moment. S3-2: Separate the two by a constant distance m along the Y-axis, fix the X-axis and Z-axis of the lathe, and move the electrode wire along the Y-axis to the other end of the support (4) edge; S3-3: Adjust the X-axis of the lathe so that the electrode wire slowly contacts the support (4) again. After slowly moving this constant distance m, a small amount of sparks will still be generated as before. At this time, the position detection of the support (4) is completed. S3-4: Adjust the support (4) and repeat steps S3-1 to S3-3 multiple times to finally achieve parallelism between both ends and the Y axis. After alignment, lock the connector (502b).

3. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 1, characterized in that, The outer surface of the support member (4) is rough and densely packed with fine teeth to increase the friction between it and the second locking member (502) and the processed member (6).

4. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 3, characterized in that, The base (1) includes a first groove (101) disposed on its surface and stop members (102) disposed at both ends of the first groove (101).

5. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 4, characterized in that, The support base (2) includes a pair of first sliders (201) disposed at the bottom of both ends, a second slide groove (202) disposed on one side of the support base (2), and a plurality of limiting holes (203) opened on the support base (2). The first slider (201) engages with the first groove (101).

6. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 5, characterized in that, The fixing base (3) includes a pair of second sliders (301) opened at the bottom of both ends, and a plurality of fixing holes (302) opened on the fixing base (3). The second slider (301) engages with the second groove (202).

7. The method of using a bridge-type fixture for wire cutting of hot extrusion dies as described in claim 6, characterized in that, The second locking member (502) includes a fixing plate (502a) and a pair of connectors (502b) passing through the fixing hole (302) and the fixing plate (502a) for fastening the fixing plate (502a). The outer surface of the fixing plate (502a) is also rough and densely toothed, which is used to increase the friction between it and the support (4).

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