Change tool

Abstract

This invention relates to the field of machining technology, and more particularly to a table-changing fixture. The table-changing fixture is used in a machining center, which is equipped with milling cutters for roughing and finishing. The fixture includes a table-changing base, a platform, a clamp, and a magnetic table. The clamp and magnetic table are mounted on the platform, and the platform is movably mounted on the table-changing base to move the clamp or magnetic table to the machining position. The workpiece to be machined can be fixed on the clamp or magnetic table at the movable machining position. When the clamp moves to the machining position, the milling cutter performs roughing on the workpiece; when the magnetic table moves to the machining position, the milling cutter performs finishing on the workpiece. The workpiece undergoes roughing and finishing on the clamp and magnetic table respectively, meaning that the workpiece achieves switching between two worktables within the same table-changing fixture, avoiding repeated clamping and handling of the workpiece, and improving machining efficiency.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a changeover fixture. Background Technology

[0002] Hinge-type parts on machine tools such as injection molding machines and die casting machines require milling of flat surfaces. Typically, hinge-type parts need to have two flat surfaces milled. After the first machining center rough-mills the first flat surface, it is transferred to a second machining center by manual means or other methods to finish-mill the second flat surface.

[0003] The milling process of hinge-type parts requires changing the machining table, which leads to repeated clamping and handling of hinge-type parts, resulting in low processing efficiency, high labor intensity, and difficulty in meeting production needs. Summary of the Invention

[0004] The purpose of this invention is to provide a table-changing fixture to solve the problem of low processing efficiency caused by repeated clamping and handling when changing the processing table during milling of hinged parts in the prior art.

[0005] To achieve this objective, the technical solution adopted by the present invention is as follows:

[0006] A table changing fixture is used in a machining center. The machining center is equipped with milling cutters for roughing and finishing. The table changing fixture includes a table changing base, a platform, a clamp, and a magnetic table. The clamp and magnetic table are set on the platform. The platform is movably set on the table changing base so that the clamp or magnetic table can be moved to the machining position. The workpiece to be machined can be fixed on the clamp or magnetic table that has been moved to the machining position.

[0007] When the vise moves to the machining position, the milling cutter performs rough machining on the workpiece; when the magnetic table moves to the machining position, the milling cutter performs finish machining on the workpiece.

[0008] As a preferred embodiment, the table changing fixture also includes a first driving component disposed on the table changing base. The output end of the first driving component is connected to the stage to drive the stage to move on the table changing base.

[0009] As a preferred embodiment, the table changing fixture also includes an operating lever movably mounted on the platform, which is used to control the movement of the output end of the first driving component.

[0010] As a preferred embodiment, the first driving component is a hydraulic cylinder, and the tooling for changing the machine also includes an electromagnetic switch. The electromagnetic switch controls the pressure increase or decrease of the first driving component to control the movement of the output end of the first driving component.

[0011] As a preferred embodiment, the table changing fixture also includes a positioning component disposed on the table changing base. The positioning component can cooperate with the vise or magnetic table that has been moved to the processing position to lock the vise or magnetic table in the processing position.

[0012] As a preferred embodiment, one of the changing platform base and the platform is provided with a slide rail, and the other of the changing platform base and the platform is provided with a slider, with the slide rail and the slider slidingly engaged.

[0013] As a preferred embodiment, the clamp includes:

[0014] The first frame is set on the platform;

[0015] The movable clamp and the fixed clamp are mounted on the first frame.

[0016] The second driving component is mounted on the first frame. The second driving component is connected to the movable clamp and can drive the movable clamp to move toward the fixed clamp to clamp the workpiece; or it can drive the movable clamp to move away from the fixed clamp to release the workpiece.

[0017] As a preferred embodiment, the fixing clamp extends in the left-right direction and is positioned at the middle of the first frame in the front-back direction;

[0018] The first frame has multiple movable clamps arranged at intervals in the left-right direction on both sides along the front-back direction.

[0019] As a preferred embodiment, the magnetic stage includes:

[0020] The second frame is mounted on the platform;

[0021] A magnetic block is disposed in the second frame and has a first position and a second position. When the magnetic block is in the first position, it can magnetize the second frame so that the second frame can attract and fix the workpiece. When the magnetic block is in the second position, the second frame demagnetizes to release the workpiece.

[0022] As a preferred option, the magnetic stage also includes:

[0023] The third drive unit is mounted on the second frame;

[0024] The gear meshes with the rack; the output end of the third drive unit is connected to the rack; the gear is rotatably mounted on the second frame via a gear shaft, and the gear shaft is connected to the magnetic block for transmission, so that when the gear rotates around the gear shaft, it drives the magnetic block to switch between the first position and the second position.

[0025] The beneficial effects of this invention are as follows:

[0026] The table-changing fixture proposed in this invention allows for rough machining of the workpiece on the vise when the vise is moved to the machining position, and fine machining of the workpiece on the magnetic table when the magnetic table is moved to the machining position. In other words, the workpiece can switch between two worktables in the same table-changing fixture, avoiding repeated clamping and handling of the workpiece and improving machining efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the tooling for changing tables provided in an embodiment of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the tooling for changing tables provided in an embodiment of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the workpiece clamping structure of the tooling for changing tables provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the magnetic table adsorbing the workpiece of the table changing fixture provided in the embodiment of the present invention;

[0031] Figure 5 yes Figure 1 A magnified view of a portion of point A in the middle.

[0032] The component names and labels in the diagram are as follows:

[0033] 10. Workpiece; 1. Changing table base; 11. First driving component; 12. Slide rail; 2. Platform; 21. Slider; 22. Operating lever;

[0034] 3. Vise stand; 31. First frame; 32. Movable vise; 33. Fixed vise; 34. Top pressure bar;

[0035] 4. Magnetic platform; 41. Second frame; 42. Third drive component; 43. Gear; 431. Gear shaft; 44. Rack. Detailed Implementation

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] In the milling process of hinge-type parts, rough milling is first performed on a first machining center to quickly machine the basic shape of the part according to the required features. Then, the part is transferred to a second machining center by manual means or other methods for finish milling to improve the surface finish, dimensional accuracy, and tolerances, thus producing a part with the required features. This process requires changing machining tables, resulting in repeated clamping and handling of hinge-type parts, leading to low processing efficiency and high labor intensity.

[0042] To solve the above problems, such as Figure 1 As shown, this embodiment proposes a table-changing fixture for a machining center, which is equipped with milling cutters for roughing and finishing. The table-changing fixture includes a table-changing base 1, a platform 2, a clamping station 3, and a magnetic platform 4. The clamping station 3 and the magnetic platform 4 are disposed on the platform 2, and the platform 2 is movably disposed on the table-changing base 1 to move the clamping station 3 or the magnetic platform 4 to the machining position. The workpiece 10 to be machined can be fixed on the clamping station 3 or the magnetic platform 4 when it is moved to the machining position. When the clamping station 3 moves to the machining position, the milling cutter performs roughing on the workpiece 10; when the magnetic platform 4 moves to the machining position, the milling cutter performs finishing on the workpiece 10.

[0043] Specifically, the clamp 3 and the magnetic table 4 are arranged side by side on the platform 2 in the left-right direction, and the platform 2 is slidably mounted on the changing table base 1 in the left-right direction. The clamp 3 and the magnetic table 4 move sequentially to the machining position. When the clamp 3 moves to the machining position, it can clamp and fix the workpiece 10 to be machined, so that the milling cutter can perform rough machining on the workpiece 10. When the magnetic table 4 moves to the machining position, it can attract and fix the workpiece 10, so that the milling cutter can perform finish machining on the workpiece 10. Alternatively, only the clamp 3 or the magnetic table 4 moves to the machining position, so that the milling cutter can perform both rough machining and finish machining on the workpiece 10.

[0044] In this embodiment, the workpiece 10 to be processed is a hinge-type part, which requires two machined surfaces (generally planes) to be milled on opposite sides. Of course, in other embodiments, the workpiece 10 can also be other types of parts, and three or more machined surfaces can be machined on the workpiece 10, which is not specifically limited here.

[0045] The table-changing base 1 of the table-changing fixture is generally installed on the work platform of the machining center. The work platform has a machining position, and the machining center also includes cutting tools such as milling cutters. The workpiece 10 located at the machining position is machined by the milling cutter. Specifically, the vise 3 moves to the machining position and clamps and fixes the workpiece 10, and the milling cutter performs rough machining on the workpiece 10. Then, a table-changing operation is performed, moving the magnetic table 4 to the machining position, and the milling cutter performs finish machining on the workpiece 10. The workpiece 10 is rough-machined and finished on the vise 3 and magnetic table 4 respectively. That is, the workpiece 10 achieves the switching between two worktables in the same table-changing fixture, performing rough machining and finish machining on the workpiece 10, avoiding repeated clamping and handling of the workpiece 10, and improving machining efficiency.

[0046] In this embodiment, when the length of workpiece 10 is less than 1000mm, workpiece 10 is first clamped on vise 3 for rough milling. Then, workpiece 10 is removed from vise 3, magnetic table 4 attracts workpiece 10, and finally, the milling cutter performs finish milling on workpiece 10. When the length of workpiece 10 exceeds 1000mm, the size and weight of workpiece 10 are both large, and the attraction force of magnetic table 4 is insufficient to attract and fix workpiece 10. Therefore, larger workpieces 10 are processed on vise 3. Specifically, after rough milling of workpiece 10 on vise 3, the milling cutter is replaced, and the milling cutter performs finish milling on workpiece 10. In other embodiments, the use of magnetic table 4 to attract and fix workpiece 10 can be determined based on the magnitude of the attraction force of magnetic table 4; that is, it can be used as long as magnetic table 4 is sufficient to attract and fix workpiece 10.

[0047] like Figure 2As shown, the table-changing fixture also includes a first driving component 11 disposed on the table-changing base 1. The output end of the first driving component 11 is connected to the platform 2 to drive the platform 2 to move on the table-changing base 1, that is, to drive the platform 2 to slide in the left and right direction. Specifically, the first driving component 11 is a hydraulic cylinder, the cylinder seat of which is fixedly mounted on the table-changing base 1. The piston rod of the first driving component 11 is retractable in the left and right direction, and the end of the piston rod is connected to the platform 2. When the piston rod extends in the left and right direction, the platform 2 slides from right to left; when the piston rod retracts in the left and right direction, the platform 2 slides from left to right, thereby moving the clamp 3 and the magnetic table 4 on the platform 2 to the processing position respectively. In other embodiments, the first driving component 11 can also be a cylinder, an electric actuator, etc.

[0048] Furthermore, the table-changing fixture also includes an operating lever 22 movably mounted on the platform 2. The operating lever 22 is used to control the movement of the output end of the first drive member 11. By manually moving the operating lever 22, the piston rod of the first drive member 11 can be extended or retracted to selectively move the vise 3 or the magnetic table 4 to the processing position, thereby realizing the table-changing operation. The table-changing operation is simple and easy to perform by manually controlling it.

[0049] In other embodiments, the table-changing operation can also be controlled electronically. Specifically, the first drive component 11 is a hydraulic cylinder, and the hydraulic cylinder is pressurized or depressurized by an electromagnetic switch to control the movement of the output end of the first drive component 11. The on / off state of the electromagnetic switch is controlled by the control console of the machining center. Therefore, the first drive component 11 can drive the platform 2 to move, so as to move the clamping table 3 or the magnetic table 4 to the machining position.

[0050] To ensure the stability and reliability of the table-changing fixture, it also includes a positioning component mounted on the table-changing base 1. This positioning component engages with the vise 3 or magnetic table 4, which has been moved to the machining position, to lock the vise 3 or magnetic table 4 in that position. Once the vise 3 or magnetic table 4 reaches the machining position, the positioning component locks it in place using snap-fit ​​or screw tightening methods, preventing positional displacement during milling. When a table change is required, the positioning component simply releases the vise 3 or magnetic table 4 from its machining position.

[0051] Specifically, the positioning component can be a screw. Both the clamp 3 and the magnetic platform 4 have a first hole, and the platform 2 has a second hole. When the clamp 3 or the magnetic platform 4 moves to the machining position, the first hole and the second hole of the clamp 3 or the magnetic platform 4 are coaxially connected, and the screw passes through the first hole and is threaded into the second hole. In other embodiments, the positioning component can also be other structures, simply locking the clamp 3 or the magnetic platform 4 in the machining position.

[0052] like Figure 1 and Figure 2As shown, one of the platform base 1 and the platform 2 is provided with a slide rail 12, and the other of the platform base 1 and the platform 2 is provided with a slider 21. The slide rail 12 and the slider 21 slide together, so that the platform 2 can slide smoothly on the platform base 1.

[0053] In this embodiment, a slide rail 12 is provided on the base 1 of the changing platform, and a slider 21 is provided at the lower end of the platform 2. Specifically, slide rails 12 extending in the left-right direction are respectively provided on the front and rear sides of the upper surface of the changing platform 1. A set of slider groups is correspondingly provided on the front and rear sides of the lower surface of the platform 2, and each set of slider groups includes three sliders 21 spaced apart. The two sets of slider groups slide in cooperation with the corresponding slide rails 12, so that the platform 2 is subjected to a balanced support force, which improves the stability of the platform 2 during the sliding process. In other embodiments, sliders 21 are provided on the base 1 of the changing platform, and slide rails 12 are provided at the lower end of the platform 2. The number and installation position of sliders 21 can be flexibly adjusted according to the actual situation, and are not specifically limited here.

[0054] like Figure 1 and Figure 3 As shown, the clamping station 3 includes a first frame 31, a movable clamp 32, a fixed clamp 33, and a second driving member. The first frame 31 is mounted on the platform 2. The movable clamp 32 is movably mounted on the first frame 31, and the fixed clamp 33 is fixedly mounted on the first frame 31. The second driving member is mounted on the first frame 31 and is connected to the movable clamp 32. The second driving member drives the movable clamp 32 to move towards the fixed clamp 33 to clamp the workpiece 10. Alternatively, the second driving member drives the movable clamp 32 to move away from the fixed clamp 33 to release the workpiece 10. By moving the movable clamp 32 closer to or further away from the fixed clamp 33, the clamping and releasing of the workpiece 10 is achieved, making the clamping of the workpiece 10 more stable and improving the efficiency of clamping and unclamping.

[0055] Specifically, the fixed clamp 33 extends in the left-right direction and is positioned at the middle of the first frame 31 in the front-back direction. Multiple movable clamps 32 are arranged at intervals in the left-right direction on both sides of the first frame 31 in the front-back direction. The multiple movable clamps 32 are divided into two groups arranged opposite each other in the front-back direction, and the fixed clamp 33 is located between the two groups of movable clamps 32. The multiple movable clamps 32 cooperate with the same fixed clamp 33, simplifying the structure of the clamp platform 3.

[0056] In this embodiment, the second driving component is also a hydraulic cylinder, which drives the movable clamp 32 to move closer to or further away from the fixed clamp 33 in the middle position. There are six movable clamps 32, arranged in groups of three. A group of movable clamps 32 is provided on both sides of the first frame 31 along the front-rear direction. Each movable clamp 32 has a clamping station between it and the fixed clamp 33, resulting in six clamping stations on the first frame 31, i.e., the clamping platform 3 is a six-station workbench. In other embodiments, the second driving component can also be a cylinder, an electric actuator, etc. The number and installation position of the movable clamps 32 can be flexibly adjusted according to actual conditions and are not specifically limited here.

[0057] Furthermore, such as Figure 1 and Figure 3 As shown, the clamping table 3 also includes a top pressure bar 34, and each clamping station on the first frame 31 is equipped with a top pressure bar 34. Each clamping station on the first frame 31 is fixedly equipped with a sliding sleeve, and multiple top pressure bars 34 are slidably inserted into their respective sliding sleeves, allowing the top pressure bars 34 to slide along the front-back direction on the first frame 31. When clamping workpiece 10, the end of the top pressure bar 34 facing the movable clamp 32 clamps one workpiece 10 together with the corresponding movable clamp 32, while the end of the top pressure bar 34 away from the movable clamp 32 clamps one workpiece 10 together with the fixed clamp 33. By moving the movable clamp 32 toward the fixed clamp 33, one workpiece 10, the top pressure bar 34, and another workpiece 10 are sequentially pressed against the fixed clamp 33, achieving stable clamping of two workpieces 10. By adding top pressure bars 34, two workpieces 10 are clamped at each clamping station, increasing the clamping capacity of the clamping table 3.

[0058] like Figure 4 As shown, the magnetic table 4 includes a second frame 41 and a magnetic block. The second frame 41 is disposed on the stage 2. The magnetic block is disposed within the second frame 41 and has a first position and a second position. When the magnetic block is in the first position, it magnetizes the second frame 41, causing the second frame 41 to attract and fix the workpiece 10. When the magnetic block is in the second position, the second frame 41 demagnetizes, releasing the workpiece 10. The magnetic table 4 attracts the workpiece 10 by magnetic force, avoiding clamping operations on the workpiece 10 and improving processing efficiency.

[0059] like Figure 5 As shown, the magnetic platform 4 also includes a third driving member 42, a gear 43, and a rack 44. The third driving member 42 is mounted on the second frame 41. The output end of the third driving member 42 is connected to the rack 44. The gear 43 is rotatably mounted on the second frame 41 via a gear shaft 431, and the gear shaft 431 is connected to the magnetic block for transmission, so that when the gear 43 rotates around the gear shaft 431, it drives the magnetic block to switch between a first position and a second position.

[0060] In this embodiment, the third driving component 42 is a hydraulic cylinder, and three gears 43 are spaced apart in the left-right direction and all mesh with the rack 44. The output end of the third driving component 42 is connected to the rack 44, so that the rack 44 moves back and forth in the left-right direction with the extension and retraction of the piston rod of the third driving component 42, thereby driving the gears 43 to rotate clockwise or counterclockwise. When the piston rod of the third driving component 42 extends, the rack 44 moves from left to right, and the gears 43 rotate around the gear shaft 431. Figure 5 The mechanism rotates in the direction indicated by the middle arrow (counterclockwise) and causes the magnetic block to flip to the first position, thereby magnetizing the second frame 41 and allowing it to attract and fix the workpiece 10. When the piston rod of the third drive member 42 retracts, the rack 44 moves from right to left, and the gear 43 rotates around the gear shaft 431 along... Figure 5 The second frame 41 is rotated in the opposite direction (clockwise) as indicated by the middle arrow, causing the magnetic block to flip to the second position, thereby magnetizing the second frame 41 and releasing the workpiece 10. The second frame 41 can also be disassembled. It should be noted that the magnetic platform 4 also includes a magnetization assembly. The magnetic block is a permanent magnet. When the magnetic block moves to the first position, the magnetization assembly magnetizes the second frame 41; when the magnetic block moves to the second position, the second frame 41 demagnetizes. The magnetization assembly and the above-described magnetization process are existing technologies and will not be described in detail here. In other embodiments, the third driving component 42 can also be a cylinder, an electric actuator, etc. The number and installation position of the gears 43 can be flexibly adjusted according to actual conditions and are not specifically limited here.

[0061] In this embodiment, the machining center uses the aforementioned table-changing fixture to perform roughing and finishing on the vise 3 and magnetic table 4, respectively. In other words, the workpiece 10 achieves the switching between two worktables within the same table-changing fixture, avoiding repeated clamping and handling of the workpiece 10 and improving machining efficiency.

[0062] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for using a tooling changer, characterized in that, The tooling includes a table-changing fixture for a machining center. The machining center is equipped with milling cutters for roughing and finishing. The table-changing fixture includes a table-changing base (1), a platform (2), a clamp (3), and a magnetic platform (4). The clamp (3) and the magnetic platform (4) are disposed on the platform (2). The platform (2) is movably disposed on the table-changing base (1) so as to move the clamp (3) or the magnetic platform (4) to the machining position. The workpiece (10) to be processed can be fixed on the clamp (3) or the magnetic platform (4) moved to the machining position. When the clamp (3) moves to the machining position, the milling cutter performs rough machining on the workpiece (10); when the magnetic table (4) moves to the machining position, the milling cutter performs finish machining on the workpiece (10). The clamp (3) includes: The first frame (31) is mounted on the platform (2); Movable clamp (32) and fixed clamp (33), wherein the movable clamp (32) is movably mounted on the first frame (31) and the fixed clamp (33) is fixedly mounted on the first frame (31); The second driving member is disposed on the first frame (31). The second driving member is connected to the movable clamp (32) and can drive the movable clamp (32) to move toward the fixed clamp (33) to clamp the workpiece (10); or can drive the movable clamp (32) away from the fixed clamp (33) to release the workpiece (10). The fixing clamp (33) extends in the left-right direction and is located at the middle position of the first frame (31) in the front-back direction; The first frame (31) is provided with a plurality of movable clamps (32) arranged at intervals along the left and right directions on both sides along the front-back direction. The clamping station (3) also includes a top pressure bar (34). Each clamping station on the first frame (31) is equipped with a top pressure bar (34). Each clamping station on the first frame (31) is fixedly equipped with a sliding sleeve. Multiple top pressure bars (34) are slidably inserted into the corresponding sliding sleeves, so that the top pressure bars (34) are slidably disposed on the first frame (31) in the front-back direction. The workpiece (10) to be processed is a hinge-type part. The hinge-type part needs to have two machining surfaces milled on opposite sides. When the length of the workpiece (10) is within 1000mm, the workpiece (10) is first clamped on the vise (3) for rough milling. Then the workpiece (10) is removed from the vise (3). The magnetic table (4) attracts the workpiece (10). Finally, the milling cutter finishes milling the workpiece (10). After the workpiece (10) is rough milled on the vise (3), the milling cutter is replaced.

2. The method of using the tooling for changing tables according to claim 1, characterized in that, The changing fixture also includes a first driving member (11) disposed on the changing base (1). The output end of the first driving member (11) is connected to the platform (2) to drive the platform (2) to move on the changing base (1).

3. The method of using the tooling for changing tables according to claim 2, characterized in that, The changing fixture also includes an operating lever (22) movably disposed on the platform (2), the operating lever (22) being used to control the movement of the output end of the first driving member (11).

4. The method of using the tooling for changing tables according to claim 2, characterized in that, The first driving component (11) is a hydraulic cylinder. The changing fixture also includes an electromagnetic switch. The electromagnetic switch controls the first driving component (11) to increase or decrease pressure to control the output end of the first driving component (11) to move.

5. The method of using the tooling for changing tables according to claim 2, characterized in that, The table changing fixture also includes a positioning component disposed on the table changing base (1). The positioning component can cooperate with the clamp (3) or the magnetic table (4) that has been moved to the processing position to lock the clamp (3) or the magnetic table (4) in the processing position.

6. The method of using the changing fixture according to any one of claims 1 to 5, characterized in that, One of the switching base (1) and the platform (2) is provided with a slide rail (12), and the other of the switching base (1) and the platform (2) is provided with a slider (21). The slide rail (12) and the slider (21) are in sliding cooperation.

7. The method of using the changing fixture according to any one of claims 1 to 5, characterized in that, The magnetic stage (4) includes: The second frame (41) is mounted on the platform (2); A magnetic block is disposed in the second frame (41), and the magnetic block has a first position and a second position. When the magnetic block is in the first position, it can magnetize the second frame (41) so that the second frame (41) can attract and fix the workpiece (10); when the magnetic block is in the second position, the second frame (41) demagnetizes to release the workpiece (10).

8. The method of using the tooling for changing tables according to claim 7, characterized in that, The magnetic stage (4) also includes: The third drive unit (42) is mounted on the second frame (41); A gear (43) and a rack (44) mesh with each other; the output end of the third drive unit (42) is connected to the rack (44); the gear (43) is rotatably mounted on the second frame (41) via a gear shaft (431), and the gear shaft (431) is connected to the magnetic block in a transmission manner, so that when the gear (43) rotates around the gear shaft (431), it drives the magnetic block to switch between the first position and the second position.

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