A machining tool for a medium-speed wire-cut electrical discharge machine bed

Abstract

This invention discloses a machining fixture for a medium-speed wire EDM machine base, including a base mounted on a fixture base. An outer wall chuck assembly and an inner wall chuck assembly are oppositely arranged on both sides of the top of the base. The outer wall chuck assembly includes a fixed seat and a clamping screw, with the clamping screw threaded onto the fixed seat. The inner wall chuck assembly includes a rotating part and a clamping part. The rotating part drives the clamping part to rotate and is mounted on the base. A folded edge inlet is formed between the outer and inner wall chucks for inserting the folded edge of the machine base. A placement plate is provided at the lower end of the folded edge inlet for placing the bottom end of the folded edge of the machine base. The placement plate is slidably mounted on the base. A first driving structure is provided on the placement plate to drive the rotating part to rotate. This invention rotates the inner wall chuck assembly onto the base, allowing the bottom of the machine base with the folded edge to be placed vertically on and removed from the fixture. Furthermore, the machine base can be directly clamped and released by rotating the screw, making it convenient to use.

Description

Technical Field

[0001] This invention relates to a machining fixture, specifically a machining fixture for the base of a medium-speed wire EDM machine. Background Technology

[0002] Medium-speed wire EDM machines belong to the category of reciprocating high-speed wire EDM machines. They achieve multiple cutting functions on high-speed reciprocating wire EDM machines and are commonly known as "medium-speed wire EDM". The term "medium-speed wire EDM" does not mean that the wire speed is between high-speed and low-speed, but rather that it refers to composite wire EDM. That is, the wire EDM principle uses high-speed wire EDM during roughing and low-speed wire EDM during finishing. This machining method has good stability and low vibration.

[0003] In the manufacturing of medium-speed wire EDM machines, the base machining is particularly important as it forms the foundation of the machine. During base surface machining, the bottom side of the base needs to be positioned and fixed using fixtures. The structure of the machine base and the fixtures is as follows: Figure 1 , 2 As shown, the machine tool base has a horizontal flange 10 at its bottom. The base plate has multiple sets of fixtures for clamping the machine tool base at multiple points. The fixtures are equipped with an outer wall chuck assembly 3 and an outer wall chuck assembly 2. A flange inlet 8 is formed between the outer wall chuck assembly 3 and the outer wall chuck assembly 2 for inserting the flange 10. To accommodate the flange 10 at the bottom of the machine tool base, when the machine tool base is placed on the fixture, a cylinder first pushes one side of the fixture, causing the flange inlets 8 on both sides of the fixture to be positioned at the corresponding locations of the flange 10 on both sides of the bottom of the machine tool base. Then, the outer wall chuck... Component 2 is disassembled so that the folded edge 10 at the bottom of the machine tool base can be lowered onto the fixture through the folded edge inlet 8. Then, the machine tool base is moved horizontally so that the outer wall chuck assembly 3 of one side of the fixture abuts against the inner wall of one side of the machine tool base. Then, the other side of the fixture is pushed by a cylinder so that the outer wall chuck assembly 3 of the other side of the fixture abuts against the inner wall of the other side of the machine tool base. Finally, the outer wall chuck assembly 2 is installed, and the screw on the outer wall chuck assembly 2 is rotated to tighten against the outer wall of the machine tool base. The above fixture is particularly cumbersome and inconvenient to operate for positioning and fixing the machine tool base due to the influence of the folded edge 10 of the machine tool base. Summary of the Invention

[0004] The purpose of this invention is to provide a machining fixture for the base of a medium-speed wire EDM machine tool to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a machining fixture for a medium-speed wire EDM machine tool base, comprising a base disposed on a fixture base, an outer wall chuck assembly and an inner wall chuck assembly disposed opposite each other on the top two sides of the base, the outer wall chuck assembly comprising a fixed seat and a clamping screw, the clamping screw being threadedly connected to the fixed seat, the inner wall chuck assembly comprising a rotating part and a clamping part, the rotating part driving the clamping part to rotate and being disposed on the base, a folding edge inlet is formed between the outer wall chuck and the inner wall chuck for the folding edge of the machine tool base to be inserted, a placement plate is provided at the lower end of the folding edge inlet for the bottom end of the folding edge of the machine tool base to be placed, the placement plate being slidably disposed on the base, and a first driving structure for driving the rotating part to rotate is provided on the placement plate.

[0006] Preferably, the rotating part includes a rotating shaft rotatably mounted on the base, the outer wall of the rotating shaft being provided with a spiral groove, and the first driving structure includes a guide rod disposed on one side of the placement plate, one end of the guide rod extending into the spiral groove and forming a sliding connection with the spiral groove.

[0007] Preferably, the pressing part includes a seat, a base shaft, a stop plate, and a buffer rubber ring. The seat is fixed to the top of the rotating shaft, the base shaft is fixed to the seat, the buffer rubber ring is sleeved on the base shaft, the stop plate is disposed on the side of the base shaft away from the seat, and the base shaft is provided with a tensioning assembly for connecting the stop plate to the base shaft to press the buffer rubber ring.

[0008] Preferably, the tensioning assembly includes a pull rod and a helical spring. The pull rod passes through the base shaft and is threadedly connected to the abutment. The base shaft has a hole on the side away from the abutment for placing the helical spring, and the helical spring is sleeved on the pull rod.

[0009] Preferably, the base shaft is provided with a bowl-shaped groove on the side connected to the abutment plate, and the abutment plate is provided with a bowl-shaped protrusion that matches the bowl-shaped groove. The bowl-shaped protrusion has a screw hole in the middle for threaded connection of the pull rod. The buffer rubber ring is sleeved on the outer wall of the bowl-shaped groove and is partially located at the outer end of the outer wall of the bowl-shaped groove. The buffer rubber ring located at the outer end of the outer wall of the bowl-shaped groove abuts against the end face of the abutment plate located outside the bowl-shaped protrusion.

[0010] Preferably, a slide block is horizontally slidable on the side of the base away from the fixed seat, the rotating shaft is rotatably disposed on the top of the slide block, the depth dimension of the spiral groove is greater than the length dimension of the guide rod inserted into the spiral groove, and the placement plate is provided with a second driving structure for driving the slide block to slide.

[0011] Preferably, the bottom of the slide is provided with a slide rod, the base is provided with a slide groove for the slide rod to slide, one side of the slide rod is provided with an extension plate, the extension plate extends to the lower end of the placement plate and a first abutment is provided on the top end face of the placement plate, the second driving structure includes a second abutment disposed at the bottom of the placement plate corresponding to the first abutment, the top of the first abutment is provided with a first inclined surface, and the bottom of the second base plate is provided with a second inclined surface for abutting against the first inclined surface.

[0012] Preferably, the base has an air cavity, one end of the extension plate is inserted into the air cavity, and the end of the extension plate located in the air cavity has a first sealing plate, which is slidably disposed in the air cavity.

[0013] Preferably, the bottom of the placement plate is provided with a rod, the base is provided with a socket for inserting the rod into the air chamber, the end of the rod located in the air chamber is provided with a second sealing plate, the second sealing plate is slidably disposed in the air chamber, one side inner wall of the air chamber is provided with an air chamber channel penetrating the base, and an air valve is connected to the outer end opening of the air chamber channel.

[0014] Preferably, a positioning block is provided on the side of the top of the placement plate away from the inner wall clamp assembly, and the top of the positioning block is provided with a guide slope.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The inner wall chuck assembly is rotatably mounted on the base, allowing the machine tool base with the folded edge to be placed vertically on the fixture and removed from the fixture. The machine tool base can be clamped and released directly by rotating the screw, making it convenient to use.

[0017] The placement plate is equipped with a first drive structure for driving the rotating shaft to rotate and a second drive structure for driving the slide to slide. After the base is placed on the placement plate and slid to the bottom, the abutment on the inner wall chuck assembly will rotate and align with the inner wall of the machine tool base. Under the sliding action of the slide, it will simultaneously press against the inner wall of the machine tool base, so that the inner wall chuck assembly can quickly press against the inner wall of the machine tool base. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1-2 This is an illustrative diagram of existing technology;

[0020] Figure 3 This is a schematic diagram of the tooling in its initial state in this embodiment;

[0021] Figure 4 This is a schematic diagram of the tooling in the clamping state in this embodiment;

[0022] Figure 5 This is an exploded view of the entire embodiment;

[0023] Figure 6 This is an exploded view of the entire embodiment from another perspective;

[0024] Figure 7 This is an exploded schematic diagram highlighting the first and second support plates in this embodiment;

[0025] Figure 8 This is a schematic diagram illustrating the interior of the base in this embodiment.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Base; 2. Outer wall chuck assembly; 201. Fixing seat; 202. Clamping screw; 3. Inner wall chuck assembly; 301. Rotating shaft; 302. Seat body; 303. Base shaft; 304. Abutment plate; 305. Buffer rubber ring; 4. Through hole; 5. Abutment rod; 6. Limiting ring; 7. Extension shaft; 8. Folded edge inlet; 9. Placement plate; 10. Folded edge; 11. Spiral groove; 12. Guide rod; 13. Helical spring; 14. Pull rod; 15. Hole; 16. Bowl-shaped groove; 17. Bowl-shaped protrusion; 18. Abutment ring; 19. Slide seat; 20. Slide rod; 21. Slide groove; 22. Extension plate; 23. First abutment plate; 24. Second abutment plate; 25. First inclined surface; 26. Second inclined surface; 27. Vertical groove; 28. Air cavity; 29. ​​First sealing plate; 30. First channel; 31. Plastic deformation layer; 32. Insert rod; 33. Insertion port; 34. Second sealing plate; 35. Second channel; 36. Air cavity channel; 37. Air valve; 38. Positioning block; 39. Guide inclined surface; 40. Machine tool base. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-8 The present invention provides a technical solution: a machining fixture for the base of a medium-speed wire EDM machine tool, including a base 1 disposed on the fixture base, and an outer wall chuck assembly 2 and an inner wall chuck assembly 3 opposite to each other on the top two sides of the base 1.

[0030] The outer wall chuck assembly 2 includes a fixed base 201 and a clamping screw 202. The fixed base 201 has a through hole 4, and the inner wall of the through hole 4 is milled with two sets of flat surfaces. A stop rod 5 is slidably mounted within the through hole 4. The sides of the stop rod 5 are milled with flat surfaces that fit the inner wall of the through hole 4, allowing the stop rod 5 to slide only within the through hole 4. A limiting ring 6 is provided on the outer wall of the clamping screw 202, and an annular groove for the limiting ring 6 to rotate is provided within the through hole 4. A threaded hole is provided on the side of the stop rod 5 away from the inner wall chuck, and the clamping screw 202 is threaded into the threaded hole. Rotating the clamping screw 202 drives the chuck. The movable abutment 5 moves within the through hole 4 of the fixed base 201 to abut against the outer wall of the machine tool base 40. It should be noted that the tail of the abutment screw 202 is provided with an extension shaft 7 to increase the lever arm, making it easier to rotate the abutment screw 202 so that the abutment 5 can better abut against the outer wall of the machine tool base 40. The end of the abutment 5 that abuts against the machine tool base 40 is set with a pot-shaped surface to adapt to the unevenness of the outer wall of the machine tool base 40. It should also be noted that the threaded part of the abutment screw 202 uses a small pitch structure, which makes it more stable when rotating the abutment screw 202 to drive the abutment 5 to abut against the machine tool base 40.

[0031] The inner wall chuck assembly 3 includes a rotating part and a clamping part. The rotating part drives the clamping part to rotate and is mounted on the base 1. A flange inlet 8 is formed between the outer wall chuck and the inner wall chuck for the flange 10 of the machine tool base 40 to be inserted. The lower end of the flange inlet 8 is provided with a placement plate 9 for the bottom end of the flange 10 of the machine tool base 40 to be placed. The placement plate 9 is slidably mounted on the base 1. The placement plate 9 is provided with a first driving structure for driving the rotating part to rotate. The flange inlet 8 has two states as the rotating part rotates. The first state is the initial state, that is, the machine tool base 40 has not yet been... When placed on the placement plate 9, the placement plate 9 is at its highest point. In the initial state, the end of the inner wall chuck assembly 3 used to press against the machine tool base 40 is located outside the folded edge inlet 8, making the folded edge inlet 8 more open, which makes it easier to put the machine tool base 40 into the folded edge 10. The other state is the pressing state, that is, after the machine tool base 40 is placed on the placement plate 9 and the placement plate 9 is slid to the bottom, after the machine tool base 40 is placed on the tooling through the placement plate 9, the clamping end of the inner wall chuck assembly 3 rotates and is opposite to the inner wall of the machine tool base 40, which makes it easier to press the inner wall of the machine tool base 40.

[0032] Specifically, the rotating part includes a rotating shaft 301 rotatably mounted on the base 1. The outer wall of the rotating shaft 301 is provided with a spiral groove 11. The first driving structure includes a guide rod 12 disposed on one side of the placement plate 9. One end of the guide rod 12 extends into the spiral groove 11 and forms a sliding connection with the spiral groove 11. The number of turns of the spiral groove 11 can be processed according to the angle required for the rotating shaft 301 to rotate when the placement plate 9 slides from the highest point to the lowest point. In this technical solution, the spiral groove 11 is half a turn. When the placement plate 9 moves from the highest point to the lowest point, the rotating shaft 301 rotates 180°.

[0033] Specifically, the clamping part includes a seat 302, a base shaft 303, abutment 304, and a buffer rubber ring 305. The seat 302 is fixed to the top of the rotating shaft 301, the base shaft 303 is fixed to the seat 302, the buffer rubber ring 305 is sleeved on the base shaft 303, and the abutment 304 is located on the side of the base shaft 303 away from the seat 302. The base shaft 303 is provided with a tensioning assembly for connecting the abutment 304 to the base shaft 303 to clamp the buffer rubber ring 305. The base shaft 303 plays an extension role when the abutment 304 is opposite to the inner wall of the machine tool base 40. The extension of the base shaft 303 offsets the extension dimension of the folded edge 10 of the machine tool base 40, so that the abutment 304 can abut against the inner wall of the machine tool base 40.

[0034] Specifically, the tensioning assembly includes a pull rod 14 and a coil spring 13. The pull rod 14 passes through the base shaft 303 and is threadedly connected to the abutment 304. The base shaft 303 has a hole 15 for placing the coil spring 13 on the side away from the abutment 304, and the coil spring 13 is sleeved on the pull rod 14. A bowl-shaped groove 16 is provided on the side of the base shaft 303 connected to the abutment 304. The abutment 304 has a bowl-shaped protrusion 17 that matches the bowl-shaped groove 16. A threaded hole for threaded connection of the pull rod 14 is provided in the middle of the bowl-shaped protrusion 17. A buffer rubber ring 305 is sleeved on the outer wall of the bowl-shaped groove 16 and is partially located at the outer end of the outer wall of the bowl-shaped groove 16. The buffer rubber ring 305 is located at the outer end of the outer wall of the bowl-shaped groove 16. The end face of the pull rod 14 abuts against the outer side of the cup-shaped protrusion 17 of the base plate 304. The head end of the pull rod 14 is threadedly connected to the base plate 304, and the tail end is provided with a retaining ring 18. The retaining ring 18 compresses the helical spring 13 into the hole 15, so that the pull rod 14 always generates a pulling force on the base plate 304. The base shaft 303 is provided with a cup-shaped groove 16, and the base plate 304 is provided with a cup-shaped protrusion 17. When the base plate 304 is pressed against the inner wall of the machine tool base 40, the base plate 304 can adapt to the unevenness of the inner wall of the machine tool, so that the cup-shaped protrusion 17 can swing freely in the cup-shaped groove 16. A buffer rubber ring 305 is provided between the base plate 304 and the base shaft 303 to provide a certain buffer space between the base plate 304 and the base shaft 303.

[0035] Specifically, a slide 19 is horizontally slidable on the side of the base 1 away from the fixed seat 201. A rotating shaft 301 is rotatably mounted on the top of the slide 19. The depth of the spiral groove 11 is greater than the length of the guide rod 12 inserted into the spiral groove 11. Since the rotating shaft 301 needs a certain space to drive the base shaft 303 to rotate during the sliding process of the machine tool base 40 on the placement plate 9, when the rotating shaft 301 rotates and the abutment 304 is opposite to the inner wall of the machine tool base 40, the abutment 304 has not yet pressed against the inner wall of the machine tool base 40. The placement plate 9 is provided with a second driving structure to drive the slide 19 to slide. The second driving structure can drive the abutment 304 to move and press against the inner wall of the machine tool base 40. The length of the guide rod 12 inserted into the spiral groove 11 is less than the depth of the spiral groove 11, so that when the rotating shaft 301 slides with the slide 19, the guide rod 12 also forms a radial sliding within the spiral groove 11.

[0036] Specifically, the slide block 19 has a slide rod 20 at its bottom, and the base 1 has a slide groove 21 for the slide rod 20 to slide. An extension plate 22 is horizontally provided on one side of the slide rod 20, extending to the lower end of the placement plate 9. A first abutment plate 23 is provided corresponding to the top surface of the placement plate 9. The second driving structure includes a second abutment plate 24 located at the bottom of the placement plate 9 corresponding to the first abutment plate 23. The top of the first abutment plate 23 has a first inclined surface 25, and the bottom of the second base plate has a second inclined surface 26 for abutting against the first inclined surface 25. As the placement plate 9 moves downwards with the machine tool base 40, the first inclined surface 25 will abut against the second inclined surface 26, and the first abutment plate 23 will move, thereby causing the abutment plate 304 to press against the inner wall of the machine tool base 40. It should be noted that, in order to make the process of the abutment 304 pressing against the inner wall of the machine tool base 40 more stable, in this technical solution, the slide block 19 is driven to slide after the rotating shaft 301 rotates so that the abutment 304 is aligned with the inner wall of the machine tool base 40. The driving method is as follows: a vertical groove 27 is set at the bottom of the spiral groove 11. When the guide rod 12 moves with the placement plate 9 to the point where the vertical groove 27 and the spiral groove 11 meet, the rotating shaft 301 completes the rotation and drives the abutment 304 to be aligned with the inner wall of the machine tool base 40. At this time, the first inclined surface 25 is in contact with the second inclined surface 26. The placement plate 9 continues to drive the guide rod 12 to slide downward in the vertical groove 27. The second abutment 24 will drive the first abutment 23 to move, thereby pressing the abutment 304 against the inner wall of the machine tool base 40.

[0037] Specifically, the base 1 is provided with an air cavity 28, one end of the extension plate 22 is inserted into the air cavity 28, and the end of the extension plate 22 located in the air cavity 28 is provided with a first sealing plate 29. The first sealing plate 29 is slidably disposed in the air cavity 28, and a first channel 30 extends from one side of the air cavity 28. The first sealing plate 29 is slidably disposed in the first channel 30. The second abutment is provided with a plastic deformation layer 31 on the straight surface at the upper end of the second inclined surface 26. When it is necessary to remove the machine tool base 40 from the tooling, the air pressure inside the air cavity 28 can be increased to drive the first abutment 23 to press the plastic deformation layer 31 and deform to a certain extent, so that the abutment plate 304 no longer presses the inner wall of the machine tool base 40, making it easier to remove the machine tool base 40.

[0038] Specifically, the bottom of the placement plate 9 is provided with a rod 32, and the base 1 is provided with a socket 33 for the rod 32 to be inserted into the air chamber 28. The end of the rod 32 located in the air chamber 28 is provided with a second sealing plate 34, which is slidably disposed in the air chamber 28. One side of the inner wall of the air chamber 28 is provided with an air chamber channel 36 that runs through the base 1. An air valve 37 is connected to the outer opening of the air chamber channel 36. The air valve 37 can be connected to an external air source through a hose, and can pump gas into the air chamber 28 according to the air pressure requirements inside the air chamber 28. The air chamber 28 is provided with a second channel 35, and the second sealing plate 34 is slidably disposed in the second channel 35. When the machine tool base 40 is not placed on the placement plate 9, the air pressure in the air chamber 28 will push the placement plate 9 to the highest position. When the machine tool base 40 is placed on the placement plate 9 and drives the placement plate 9 to move downward, the pressure in the air chamber 28 will generate a buffering force on the placement plate 9, so that the machine tool base 40 can fall more stably.

[0039] Specifically, a positioning block 38 is provided on the side of the top of the placement plate 9 away from the inner wall chuck assembly 3. The top of the positioning block 38 is provided with a guide slope 39. When the machine tool base 40 is fixed by the tooling, the tooling is fixed on the base (existing method), so that the distance between the positioning blocks 38 on the tooling that fixes the machine tool base 40 is equal to the width of the machine tool base 40. After the machine tool base 40 moves down through the guide slope 39, it can be located exactly between the two positioning blocks 38, which facilitates the positioning of the machine tool base 40 by the tooling.

[0040] A specific application example of this embodiment is as follows:

[0041] When using this device, the required number of fixtures are fixed on the base according to the size of the machine tool base 40. The fixtures can be installed according to the width of the machine tool base 40 so that the distance between the positioning plates on both sides of the fixtures is equal to the width of the machine tool base 40.

[0042] The machine tool base 40 is lifted by a lifting device and moved directly above the fixture, aligning the folded edge 10 at the bottom of the machine tool base 40 with the folded edge inlet 8 on the fixture. After alignment, the machine tool base 40 is slowly lowered. When the machine tool base 40 contacts the placement plate 9, the folded edge 10 will be located below the base spindle 303, preventing interference from the folded edge 10 when the base spindle 303 rotates with the rotating shaft 301. As the machine tool base 40 is placed on the placement plate 9 and continues to move downward, the placement plate 9 will also move downward. The downward movement of the placement plate 9 will cause the guide rod 12 to slide within the spiral groove 11. As the guide rod 12 moves downward with the placement plate 9, it will cause the rotating shaft 301 to rotate. The machine tool base 40 continues to descend, causing the placement plate 9 to move downward. When the placement plate 9 moves the guide rod 12 to the bottom of the spiral groove 11, the rotating shaft 301 rotates, causing the abutment 304 to face the inner end face of the machine tool base 40. Continuing with the lower machine tool base 40, the placement plate 9 will drive the guide rod 12 to move downward in the vertical groove 27 (the depth of the vertical groove 27 is greater than the size of the guide rod 12 inserted into the vertical groove 27, leaving a certain sliding space for the slide 19 to slide, preventing the guide rod 12 from pressing against the inner wall of the vertical groove 27 and preventing the slide 19 from sliding). At the same time, the second inclined surface 26 of the second abutment plate 24 at the bottom of the placement plate 9 abuts against the first inclined surface 25 on the first abutment plate 23, thereby driving the slide 19 to slide until the machine tool base 40 drives the placement plate 9 to move to the bottom and fit against the base 1. The sliding of the slide 19 will drive the abutment plate 304 to move and press against the inner wall of the machine tool base 40. Then, by rotating the extension shaft 7, the extension shaft 7 drives the clamping screw 202 to rotate. The rotation of the clamping screw 202 drives the abutment rod 5 to move towards one side of the machine tool base 40 and press against the outer wall of the machine tool base 40. Finally, the positioning and fixing of the machine tool base 40 can be completed.

[0043] When the machine tool base 40 needs to be removed from the tooling after machining, the air valve 37 can be opened and an external air source can be pumped into the air chamber 28. This drives the first sealing plate 29 to move away from the air chamber 28 within the first channel 30, causing the first abutment 23 to press against the second abutment 24. This causes the plastic deformation layer 31 on the second abutment 24 to deform, allowing the slide 19 to slide a certain distance. As a result, the abutment plate 304 no longer presses against the inner wall of the machine tool base 40, making it easier to lift the machine tool base 40 upwards. Under the pressure inside the air chamber 28, during the lifting process of the machine tool base 40, the second sealing plate 34 will move upwards, causing the placement plate 9 to move upwards. This causes the guide rod 12 to move upwards, driving the rotating shaft 301 to rotate. After the rotating shaft 301 rotates to its initial state, the folding edge inlet 8 is also in a fully open state, ensuring that the folding edge 10 is not interfered with when the machine tool base 40 is lifted.

[0044] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing this 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 this invention.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining tool for a medium-speed wire-cut electrical discharge machine tool base, comprising a base (1) arranged on a tool base, characterized in that: The opposite sides of the top of the base (1) are provided with outer wall chuck assembly (2) and inner wall chuck assembly (3), the outer wall chuck assembly (2) includes fixed seat (201) and tight screw (202), the tight screw (202) is connected on the fixed seat (201), the inner wall chuck assembly (3) includes rotating part and pressing part, the rotating part drives the pressing part to rotate and is arranged on the base (1), the outer wall chuck and the inner wall chuck are formed with the edge entrance (8) for the edge (10) of the machine tool base (40) to be clamped, the lower end of the edge entrance (8) is provided with the placement plate (9) for the bottom end of the edge (10) of the machine tool base (40) to be placed, the placement plate (9) is slidably arranged on the base (1), and the placement plate (9) is provided with the first driving structure for driving the rotating part to rotate.

2. The machining tooling fixture for the base of a medium-speed wire-cut electrical discharge machine according to claim 1, characterized in that: The rotating part includes a rotating shaft (301) rotatably arranged on the base (1), and a spiral groove (11) is formed on the outer wall of the rotating shaft (301). The first driving structure includes a guide rod (12) arranged on one side of the placement plate (9), one end of the guide rod (12) extends into the spiral groove (11) and is slidably connected with the spiral groove (11).

3. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 2, wherein: The pressing part includes a seat body (302), a base shaft (303), a pressing disc (304) and a buffer rubber ring (305), the seat body (302) is fixed on the top of the rotating shaft (301), the base shaft (303) is fixed on the seat body (302), the buffer rubber ring (305) is sleeved on the base shaft (303), the pressing disc (304) is arranged on the side of the base shaft (303) away from the seat body (302), and a tensioning assembly is arranged on the base shaft (303) for connecting the pressing disc (304) to the base shaft (303) and pressing the buffer rubber ring (305).

4. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 3, wherein: The tensioning assembly includes a pull rod (14) and a spiral spring (13), the pull rod (14) penetrates through the base shaft (303) and is threadedly connected with the pressing disc (304), and the side of the base shaft (303) away from the pressing disc (304) is provided with a hole portion (15) for placing the spiral spring (13), and the spiral spring (13) is sleeved on the pull rod (14).

5. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 4, wherein: The side of the base shaft (303) connected with the pressing disc (304) is provided with a bowl-shaped groove (16), the pressing disc (304) is provided with a bowl-shaped protrusion (17) matched with the bowl-shaped groove (16), the middle of the bowl-shaped protrusion (17) is provided with a threaded hole for threadedly connecting the pull rod (14), and the buffer rubber ring (305) is sleeved on the outer wall of the bowl-shaped groove (16) and partially located at the outer end of the outer wall of the bowl-shaped groove (16), and the buffer rubber ring (305) located at the outer end of the outer wall of the bowl-shaped groove (16) abuts against the end face of the pressing disc (304) located at the outer side of the bowl-shaped protrusion (17).

6. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 5, wherein: The top of the base (1) is provided with a sliding seat (19) horizontally sliding away from the fixed seat (201), the rotating shaft (301) is rotatably arranged on the top of the sliding seat (19), the depth of the spiral groove (11) is greater than the length of the guide rod (12) inserted into the spiral groove (11), and the placement plate (9) is provided with a second driving structure for driving the sliding seat (19) to slide.

7. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 6, wherein: The slide (19) is provided with a slide rod (20), the base (1) is provided with a sliding groove (21) for the slide rod (20) to slide, one side of the slide rod (20) is horizontally provided with an extension plate (22), the extension plate (22) extends to the lower end of the placement plate (9), and the top end face corresponding to the placement plate (9) is provided with a first abutting plate (23), the second driving structure comprises a second abutting plate (24) provided on the bottom of the placement plate (9) corresponding to the first abutting plate (23), the top of the first abutting plate (23) is provided with a first inclined surface (25), and the bottom of the second abutting plate (24) is provided with a second inclined surface (26) for abutting against the first inclined surface (25).

8. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 7, wherein: The base (1) is provided with an air cavity (28), one end of the extension plate (22) is inserted into the air cavity (28), one end of the extension plate (22) in the air cavity (28) is provided with a first sealing plate (29), and the first sealing plate (29) is slidably arranged in the air cavity (28).

9. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 8, wherein: The bottom of the placement plate (9) is provided with a plug rod (32), the base (1) is provided with a socket (33) for the plug rod (32) to insert into the air cavity (28), one end of the plug rod (32) in the air cavity (28) is provided with a second sealing plate (34), the second sealing plate (34) is slidably arranged in the air cavity (28), and the inner wall of one side of the air cavity (28) is provided with an air cavity channel (36) through the base (1), and the outer end opening of the air cavity channel (36) is connected with an air valve (37).

10. The machining tooling fixture for a mid-travel wire electrical discharge machine bed as defined in claim 9, wherein: The top of the placement plate (9) is provided with a positioning block (38) away from one side of the inner wall chuck assembly (3), and the top of the positioning block (38) is provided with a guide inclined surface (39).

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