A fixture for wire cutting machine tools

Abstract

The present invention relates to a fixture, and in particular to a fixture for a wire cutting machine. The present invention provides a fixture for a wire cutting machine, comprising a fixed frame, an integrated controller and a mounting frame, wherein the fixed frame is fixedly mounted with the integrated controller, the fixed frame is provided with a rotatable mounting frame, and further comprising a clamping assembly, wherein the mounting frame is provided with a clamping assembly for clamping and fixing a workpiece, the clamping assembly comprising a double-headed screw rod I and a servo motor, etc., the mounting frame is symmetrically rotatably mounted with the double-headed screw rod I, and the mounting frame is fixedly mounted with a servo motor electrically connected to the integrated controller. The present invention transmits the corresponding transverse clamp and longitudinal clamp to move synchronously when the two movable plates move in a direction approaching each other, thereby cooperating with each other to automatically clamp and fix the workpiece in all directions, thereby changing the traditional manual adjustment method with a simple mechanical structure, thereby improving the processing efficiency of the wire cutting machine.

Description

Technical Field

[0001] The invention relates to a fixture, in particular to a fixture for a wire cutting machine tool. Background Art

[0002] Wire EDM is referred to as "wire cutting". It uses electrode wire (molybdenum wire, tungsten-molybdenum wire, etc.) as the tool electrode. Under the action of a pulse power supply, spark discharge is formed between the tool electrode and the workpiece. The spark channel instantly generates a large amount of heat, causing the workpiece surface to melt or even vaporize. The wire cutting machine tool moves the electrode wire along a predetermined trajectory through the movement of the XY support plate and the UV support plate, thereby achieving the purpose of processing the workpiece.

[0003] According to the Chinese patent disclosure document with patent publication number CN218874030U, a wire cutting machine tool fixture is proposed, including a fixing plate, the fixing plate is provided with a plurality of first screw holes, and is detachably connected to the machine tool; a connecting plate, the connecting plate is provided with a plurality of second screw holes corresponding to the fixing plate, and is bolted to the fixing plate; and a mounting block, the mounting block is provided with a third screw hole corresponding to the connecting plate, and the plurality of mounting blocks are bolted to the connecting plate.

[0004] Although the above patent can fix the workpiece, in actual use, the bolt limit method requires the staff to adjust the corresponding bolt hole position at any time according to the size of the workpiece, which is time-consuming and labor-intensive, and there is a problem of affecting the efficiency of the machine tool in processing the workpiece. In addition, the reserved bolt hole positions are fixed, so it may not be possible to firmly clamp workpieces of different models, and displacement is likely to occur during the processing process, affecting the processing effect of the workpiece. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a fixture for a wire cutting machine tool to solve the above problems.

[0006] Technical solution: A fixture for a wire cutting machine tool, including a fixed frame, an integrated controller and a mounting frame, the fixed frame is fixedly mounted with an integrated controller, the fixed frame is provided with a rotatable mounting frame, and also includes a clamping assembly, the mounting frame is provided with a clamping assembly for clamping and fixing the workpiece, the clamping assembly includes a double-headed screw I, a servo motor, a rotating rod, a bevel gear set, a moving plate, a rack I, a double-headed screw II, a transverse clamp and a spur gear I, the mounting frame is symmetrically rotatably mounted with a double-headed screw I, and the mounting frame is fixed with a servo electrically connected to the integrated controller. The motor and the mounting frame are rotatably mounted with a rotating rod fixedly connected to the output shaft of the servo motor, and a bevel gear set is respectively provided between the rotating rod and the two double-headed screw rods Ⅰ, and a movable plate that can slide along the mounting frame is symmetrically provided on the mounting frame, and the two movable plates are respectively threadedly connected to the two double-headed screw rods Ⅰ, and a rack Ⅰ is fixedly mounted on the mounting frame, and double-headed screw rods Ⅱ are rotatably mounted in the two movable plates, and a transverse clamp that is threadedly connected to the double-headed screw rod Ⅱ on the same side is symmetrically provided on the side where the two movable plates are close to each other, and a spur gear Ⅰ is respectively fixedly connected to the two double-headed screw rods Ⅱ, and the two spur gears Ⅰ are meshed with the rack Ⅰ.

[0007] In addition, it is particularly preferred that the clamping assembly also includes a double-headed screw III, a longitudinal clamp and a worm gear group, and the double-headed screw III is rotatably installed in the two movable plates respectively. The sides of the two movable plates close to each other are symmetrically provided with longitudinal clamps threadedly connected to the double-headed screw III on the same side, and a worm gear group is respectively provided between the two double-headed screw III and the double-headed screw II on the same side.

[0008] In addition, it is particularly preferred that the double-headed screw III and the double-headed screw II on the same side are arranged in a cross-staggered manner.

[0009] In addition, it is particularly preferred that a supporting assembly is also included, the supporting assembly includes a stepper motor, a threaded rod and a supporting bracket, the stepper motor electrically connected to the integrated controller is fixedly mounted on the mounting frame, the threaded rod fixedly connected to the output shaft of the stepper motor is rotatably mounted on the mounting frame, and the mounting frame is provided with a supporting bracket that can slide along the mounting frame, and the supporting bracket is threadedly connected to the threaded rod.

[0010] In addition, it is particularly preferred that a guide rod is further included, the guide rod is fixedly mounted on the mounting frame, and the supporting frame is slidably connected to the guide rod.

[0011] In addition, it is particularly preferred that an extension rod is further included, and the support bracket is provided with the extension rod that can slide along the extension rod.

[0012] In addition, it is particularly preferred that friction blocks and return springs are also included, and friction blocks are slidingly installed on the side where the two horizontal clamps on the same side are close to each other and on the side where the two longitudinal clamps on the same side are close to each other, and multiple return springs are respectively provided between each friction block and the corresponding horizontal clamp and longitudinal clamp.

[0013] In addition, it is particularly preferred that a stabilizing component is also included, which includes a top plate, a top rod, a return spring, a tilt rod and a top block. The two friction blocks on the longitudinal clamp on the same side are rotatably connected to the top plate on the side close to each other, and a slidable top rod is provided between each top plate and the corresponding longitudinal clamp. A return spring is provided between each top rod and the corresponding longitudinal clamp. The two longitudinal clamps on the same side are rotatably installed on the side away from each other, and the ends of the two top rods on the same side away from each other are slidably connected to the corresponding tilt rod. The friction block on each longitudinal clamp is provided with a top block that can slide along it, and the other end of the tilt rod is rotatably connected to the corresponding top block.

[0014] In addition, it is particularly preferred that the end of the tilting rod close to the corresponding top block is retractable.

[0015] In addition, it is particularly preferred that a rotating component is also included, the rotating component includes an electric push rod, a rack II and a spur gear II, the electric push rod electrically connected to the integrated controller is fixedly mounted on the fixed frame, the rack II that can slide along it is provided on the fixed frame, the telescopic rod of the electric push rod is fixedly connected to the rack II, and a spur gear II is rotatably mounted on the fixed frame, the spur gear II and the rack II are engaged with each other, and the spur gear II is fixedly connected to the mounting frame.

[0016] Compared with the prior art, the present invention has the following advantages: 1. When the two movable plates move toward each other, the corresponding transverse clamps and longitudinal clamps are driven to move synchronously, thereby cooperating with each other to automatically clamp and fix the workpiece in all directions, thereby changing the traditional manual adjustment method with a simple mechanical structure, thereby improving the processing efficiency of the wire cutting machine.

[0017] 2. The present invention arranges friction blocks on the transverse clamp and the longitudinal clamp, and uses the elasticity of the return spring to improve the tightness between the friction blocks and the workpiece. This can not only increase the friction between the transverse clamp and the longitudinal clamp and the workpiece, improve the stability of the clamping, but also adapt to clamp and fix workpieces of different shapes, thereby improving the practicality of the device.

[0018] 3. The present invention utilizes the top plate to push the workpiece when clamping the workpiece, thereby pushing the corresponding top block toward the workpiece through the tilting rod, thereby pressing the workpiece through the top block, further improving the stability of the friction block in clamping the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0020] Figure 2 It is a structural schematic diagram of the clamping assembly of the present invention.

[0021] Figure 3It is a schematic cross-sectional structural diagram of the mounting frame of the present invention.

[0022] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the clamping assembly of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the supporting assembly of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the friction block, return spring, top plate and other components of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the stabilizing component of the present invention.

[0026] Figure 8 This is a schematic diagram of the first structure of the rotating assembly of the present invention.

[0027] Figure 9 This is a second structural schematic diagram of the rotating assembly of the present invention.

[0028] Among them, the above-mentioned drawings include the following figure marks: 1. fixing frame, 2. integrated controller, 3. mounting frame, 401. double-headed screw I, 402. servo motor, 403. rotating rod, 404. bevel gear set, 405. moving plate, 406. rack I, 407. double-headed screw II, 408. horizontal clamp, 409. spur gear I, 410. double-headed screw III, 411. longitudinal clamp, 412. worm gear set, 501. stepping motor, 502. threaded rod, 503. supporting frame, 504. guide rod, 505. extension rod, 601. friction block, 602. return spring, 701. top plate, 702. top rod, 703. reset spring, 704. tilting rod, 705. top block, 801. electric push rod, 802. rack II, 803. spur gear II. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0030] Example 1: A fixture for a wire cutting machine tool, such as Figures 1-4As shown, it includes a fixed frame 1, an integrated controller 2 and a mounting frame 3. The integrated controller 2 is installed on the left front part of the fixed frame 1 by bolts. A rotatable mounting frame 3 is provided in front of the fixed frame 1. It also includes a clamping assembly. The mounting frame 3 is provided with a clamping assembly for clamping and fixing the workpiece. The clamping assembly includes a double-headed screw Ⅰ 401, a servo motor 402, a rotating rod 403, a bevel gear set 404, a movable plate 405, a rack Ⅰ 406, a double-headed screw Ⅱ 407, a transverse clamp 408 and a spur gear Ⅰ 409. The double-headed screw Ⅰ 401 is symmetrically installed in the mounting frame 3 in a rotating manner. The servo motor 402 electrically connected to the integrated controller 2 is installed on the left part of the top surface of the mounting frame 3 by bolts. The inner left part of the mounting frame 3 is rotatably installed with the servo motor 402 electrically connected to the integrated controller 2. The output shaft of the servo motor 402 is connected to the rotating rod 403 through a coupling, and a bevel gear set 404 is provided between the rotating rod 403 and the two double-headed screw rods I 401. A movable plate 405 that can slide along the front is symmetrically provided on the left and right sides of the front of the mounting frame 3. The two movable plates 405 are respectively threadedly connected to the two double-headed screw rods I 401. A rack I 406 is installed in the middle of the front of the mounting frame 3 by bolts, and double-headed screw rods II 407 are rotatably installed in the inner middle parts of the two movable plates 405. The sides of the two movable plates 405 that are close to each other are respectively symmetrically provided with transverse clamps 408 that are threadedly connected to the double-headed screw rods II 407 on the same side. The rear ends of the two double-headed screw rods II 407 are respectively connected to spur gears I 409 by bolts, and the two spur gears I 409 are meshed with the rack I 406.

[0031] like Figure 1 、 Figure 2 and Figure 4 As shown, the clamping assembly also includes a double-headed screw III 410, a longitudinal clamp 411 and a worm gear group 412. The double-headed screw III 410 is rotatably installed in the inner middle part of the two movable plates 405, and the two movable plates 405 are close to each other. The side is symmetrically provided with a longitudinal clamp 411 threadedly connected to the double-headed screw III 410 on the same side, and a worm gear group 412 is provided between the two double-headed screws III 410 and the double-headed screw II 407 on the same side. The double-headed screw III 410 and the double-headed screw II 407 on the same side are arranged in a cross-staggered manner. When the double-headed screw II 407 rotates, the corresponding double-headed screw III 410 will be driven to rotate synchronously through the worm gear group 412.

[0032] like Figure 1 and Figure 5As shown, it also includes a supporting assembly, which includes a stepper motor 501, a threaded rod 502 and a supporting bracket 503. The stepper motor 501 electrically connected to the integrated controller 2 is installed in the middle of the top surface of the mounting frame 3 by bolts, and the threaded rod 502 connected to the output shaft of the stepper motor 501 through a coupling is rotatably installed in the middle of the front of the mounting frame 3. A supporting bracket 503 that can slide up and down is provided in front of the mounting frame 3. The workpiece to be cut will be placed on the supporting bracket 503, and the supporting bracket 503 is threadedly connected to the threaded rod 502.

[0033] like Figure 1 and Figure 5 As shown, it also includes a guide rod 504. The guide rods 504 are symmetrically installed on the front of the mounting frame 3 through bolts. The support bracket 503 is slidably connected to the two guide rods 504. The guide rods 504 will guide the support bracket 503 and ensure the stability of the support bracket 503 when moving.

[0034] like Figure 1 and Figure 5 As shown, an extension rod 505 is also included. The front end of the support bracket 503 is symmetrically provided with the extension rod 505 which can slide back and forth along the front end.

[0035] When the workpiece needs to be clamped during online cutting, the fixing frame 1 is first fixed to the corresponding position of the online cutting machine by bolts, and then the workpiece to be cut is placed on the support bracket 503. During this period, the two extension rods 505 can be pulled forward in turn according to the actual needs of the workpiece to extend the width of the support bracket 503, thereby ensuring the stability of the workpiece support. After the workpiece is placed, the clamping program is started by the integrated controller 2. The integrated controller 2 will first start the stepper motor 501, and the stepper motor 501 will drive the threaded rod 502 to rotate through the output shaft. The threaded rod 502 will drive the support bracket 503 to move upward along the two guide rods 504 to the middle of the mounting bracket 3 through the thread. Then the integrated controller 2 will start the servo motor 402, and the output shaft of the servo motor 402 will drive the rotating rod 403 to rotate synchronously. The rotating rod 403 will drive the two double-headed screws Ⅰ 401 to rotate synchronously through the bevel gear set 404. The rod Ⅰ 401 will drive the two movable plates 405 to move in the direction of approaching each other through the thread. As the two movable plates 405 move, the rack Ⅰ 406 will push the two spur gears Ⅰ 409 to rotate, and the spur gear Ⅰ 409 will drive the corresponding double-headed screw rods Ⅱ 407 to rotate synchronously. The two double-headed screw rods Ⅱ 407 will drive the two horizontal clamps 408 on the same side to move in the direction of approaching each other through the thread, so as to clamp the workpiece front and back in coordination with the movement of the movable plate 405, and as the two double-headed screw rods Ⅱ 407 rotate, the double-headed screw rods Ⅱ 407 will drive the corresponding double-headed screw rods III 410 to rotate synchronously through the worm gear group 412, and the double-headed screw rods III 410 will drive the two longitudinal clamps 411 on the same side to move in the direction of approaching each other through the thread, thereby clamping the workpiece up and down, thereby achieving all-round fixation of the workpiece, ensuring the stability of the clamping, and preventing displacement during the cutting process.

[0036] Example 2: Based on Example 1, Figure 1 and Figure 6 As shown, it also includes a friction block 601 and a return spring 602. The friction block 601 is slidably installed on the side where the two horizontal clamps 408 on the same side are close to each other and the side where the two longitudinal clamps 411 on the same side are close to each other. The friction block 601 will increase the friction between the horizontal clamp 408 and the longitudinal clamp 411 and the workpiece. Multiple return springs 602 are respectively provided between each friction block 601 and the corresponding horizontal clamp 408 and longitudinal clamp 411.

[0037] like Figure 1 、 Figure 6 and Figure 7As shown, it also includes a stabilizing component, which includes a top plate 701, a top rod 702, a return spring 703, a tilting rod 704 and a top block 705. The two friction blocks 601 on the longitudinal clamp 411 on the same side are rotatably connected to the top plate 701 on the side close to each other, and a top rod 702 that can slide up and down is provided between each top plate 701 and the corresponding longitudinal clamp 411, and a return spring 703 is provided between each top rod 702 and the corresponding longitudinal clamp 411. The sides of the two longitudinal clamps 411 on the same side that are away from each other are rotatably installed with a tilting rod 704, and the ends of the two top rods 702 on the same side that are away from each other are slidably connected to the corresponding tilting rod 704. The friction block 601 on each longitudinal clamp 411 is respectively provided with a top block 705 that can slide up and down along it, and the other end of the tilting rod 704 is rotatably connected to the corresponding top block 705, and the end of the tilting rod 704 close to the corresponding top block 705 is retractable.

[0038] As the transverse clamp 408 and the longitudinal clamp 411 clamp the workpiece, the friction block 601 will ensure the tightness of the fit to the workpiece under the elastic action of the return spring 602, which can not only increase the friction force between the transverse clamp 408 and the longitudinal clamp 411 and the workpiece, improve the stability of the clamping, but also adapt to clamping and fixing workpieces of different shapes, thereby improving the practicality of the device. As the longitudinal clamp 411 drives the corresponding friction block 601 to clamp the workpiece, the workpiece will push the top plate 701 to rotate in the direction of the corresponding friction block 601, and the top plate 701 will push the tilting rod 704 through the corresponding push rod 702 to flip synchronously, the return spring 703 will be compressed, and the tilting rod 704 will push the corresponding top block 705 to move toward the workpiece, thereby pressing the workpiece through the top block 705, further improving the stability of the friction block 601 in clamping the workpiece.

[0039] like Figure 1 、 Figure 8 and Figure 9 As shown, it also includes a rotating component, which includes an electric push rod 801, a rack II 802 and a spur gear II 803. The rear part of the fixed frame 1 is equipped with an electric push rod 801 electrically connected to the integrated controller 2 by bolts, and the lower part of the front of the fixed frame 1 is provided with a rack II 802 that can slide left and right along it. The telescopic rod of the electric push rod 801 is connected to the rack II 802 by bolts, and a spur gear II 803 is rotatably installed at the center of the front of the fixed frame 1. The spur gear II 803 and the rack II 802 are engaged with each other, and the spur gear II 803 is connected to the mounting frame 3 by bolts.

[0040] If the workpiece needs to be cut in different directions, the electric push rod 801 is started through the integrated controller 2, and the telescopic rod of the electric push rod 801 will drive the rack II 802 to move left or right along the fixed frame 1, and the rack II 802 will drive the mounting frame 3 to rotate clockwise or counterclockwise through the spur gear II 803 engaged with it, so as to meet different cutting requirements and further improve the practicality of the device.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A fixture for a wire cutting machine tool, comprising a fixed frame (1), an integrated controller (2) and a mounting frame (3), wherein the integrated controller (2) is fixedly mounted on the fixed frame (1), and a rotatable mounting frame (3) is provided on the fixed frame (1), wherein: The mounting frame (3) is provided with a clamping assembly for clamping and fixing the workpiece, and the clamping assembly includes a double-headed screw rod I (401), a servo motor (402), a rotating rod (403), a bevel gear set (404), a movable plate (405), a rack I (406), a double-headed screw rod II (407), a transverse clamp (408) and a spur gear I (409). The double-headed screw rod I (401) is symmetrically rotatably installed in the mounting frame (3). A servo motor (402) electrically connected to the integrated controller (2) is fixedly mounted on the mounting frame (3), a rotating rod (403) fixedly connected to the output shaft of the servo motor (402) is rotatably mounted in the mounting frame (3), a bevel gear set (404) is respectively provided between the rotating rod (403) and the two double-headed screw rods I (401), and a movable plate (405) that can slide along the mounting frame (3) is symmetrically provided, and the two movable plates (405) are respectively connected to the threads of the two double-headed screw rods I (401). The mounting frame (3) is fixedly mounted with a rack I (406), and the two movable plates (405) are respectively rotatably mounted with double-headed screws II (407). The two movable plates (405) are symmetrically provided with a transverse clamp (408) threadedly connected to the double-headed screw II (407) on the same side on the side close to each other. The two double-headed screws II (407) are respectively fixedly connected with a spur gear I (409), and the two spur gears I (409) are meshed with the rack I (406); the clamp The tightening assembly also includes a double-headed screw III (410), a longitudinal clamp (411) and a worm gear group (412). The double-headed screw III (410) is rotatably installed in the two movable plates (405). The longitudinal clamps (411) that are threadedly connected to the double-headed screw III (410) on the same side are symmetrically provided on the sides of the two movable plates (405) close to each other. The worm gear group (412) is provided between the two double-headed screw III (410) and the double-headed screw II (407) on the same side.

2. A fixture for a wire cutting machine tool according to claim 1, characterized in that: The double-headed screw III (410) and the double-headed screw II (407) on the same side are arranged in a cross-staggered manner.

3. A fixture for a wire cutting machine tool according to claim 2, characterized in that: The invention also includes a supporting assembly, which includes a stepping motor (501), a threaded rod (502) and a supporting frame (503). The stepping motor (501) electrically connected to the integrated controller (2) is fixedly mounted on the mounting frame (3). The threaded rod (502) fixedly connected to the output shaft of the stepping motor (501) is rotatably mounted on the mounting frame (3). The mounting frame (3) is provided with a supporting frame (503) that can slide along the supporting frame, and the supporting frame (503) is threadedly connected to the threaded rod (502).

4. A fixture for a wire cutting machine tool according to claim 3, characterized in that: It also includes a guide rod (504), the guide rod (504) is fixedly mounted on the mounting frame (3), and the supporting frame (503) is slidably connected to the guide rod (504).

5. A fixture for a wire cutting machine tool according to claim 4, characterized in that: It also includes an extension rod (505), and the support frame (503) is provided with the extension rod (505) which can slide along the support frame (503).

6. A fixture for a wire cutting machine tool according to claim 5, characterized in that: The apparatus further comprises a friction block (601) and a return spring (602). The friction block (601) is slidably mounted on the side where the two transverse clamps (408) on the same side are close to each other and on the side where the two longitudinal clamps (411) on the same side are close to each other. A plurality of return springs (602) are respectively provided between each friction block (601) and the corresponding transverse clamp (408) and longitudinal clamp (411).

7. A fixture for a wire cutting machine tool according to claim 6, characterized in that: The invention also includes a stabilizing component, which includes a top plate (701), a top rod (702), a return spring (703), a tilting rod (704) and a top block (705). The two friction blocks (601) on the longitudinal clamp (411) on the same side are rotatably connected to the top plate (701) on the sides close to each other. A slidable top rod (702) is provided between each top plate (701) and the corresponding longitudinal clamp (411). Each top rod (702) is connected to the corresponding longitudinal clamp (411). A return spring (703) is provided between the two longitudinal clamps (411), and a tilting rod (704) is rotatably installed on the side of the two longitudinal clamps (411) that are away from each other. The ends of the two top rods (702) on the same side that are away from each other are slidably connected to the corresponding tilting rod (704). The friction block (601) on each longitudinal clamp (411) is provided with a top block (705) that can slide along it, and the other end of the tilting rod (704) is rotatably connected to the corresponding top block (705).

8. A fixture for a wire cutting machine tool according to claim 7, characterized in that: One end of the tilting rod (704) close to the corresponding top block (705) is retractably arranged.

9. A fixture for a wire cutting machine tool according to claim 8, characterized in that: The invention also includes a rotating assembly, which includes an electric push rod (801), a rack II (802) and a spur gear II (803). The electric push rod (801) electrically connected to the integrated controller (2) is fixedly mounted on the fixed frame (1). The rack II (802) that can slide along the electric push rod is provided on the fixed frame (1). The telescopic rod of the electric push rod (801) is fixedly connected to the rack II (802). The spur gear II (803) is rotatably mounted on the fixed frame (1). The spur gear II (803) and the rack II (802) are meshed with each other, and the spur gear II (803) is fixedly connected to the mounting frame (3).

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