CN118305477A - Clamp fixing equipment of laser cutting numerical control machine tool - Google Patents

Abstract

The present invention discloses a fixture fixing device for a laser cutting CNC machine tool, which relates to the field of machine tool technology and comprises a base, a return assembly is slidably mounted on the top of the base, the return assembly comprises a return platform mounted on the top of the base, a clamping assembly comprises a clamping plate mounted on the top of a translation platform, positioning pieces are mounted in a left-right symmetrical shape in the clamping plate, and there are four groups of positioning pieces, and the positioning pieces are telescopically mounted on the bottom of the clamping plate, and the positioning pieces are used for inserting and positioning the clamping plate on the translation platform, and the positioning pieces are inserted with the translation platform through a socket. The fixture fixing device for the laser cutting CNC machine tool can keep the translation platform and the clamping plate on the top of the return platform unchanged when clamping the workpiece during operation, so as to facilitate repeated clamping operations on the next batch of workpieces, simplify the clamping operation process of the fixture fixing device on the workpieces of the same specification and model, shorten the fixture adjustment time, and improve the clamping efficiency.

Description

A fixture fixing device for laser cutting CNC machine tools

Technical Field

The invention relates to the technical field of machine tools, in particular to a clamp fixing device for a laser cutting numerically controlled machine tool.

Background technique

Laser cutting technology, as an efficient and precise material processing method, has been widely used in the manufacturing industry; however, in the laser cutting process, the fixation of the workpiece is one of the key factors to ensure processing accuracy and efficiency; traditional fixture fixing equipment is prone to loosening, drifting and other problems during work, affecting the cutting accuracy and work efficiency; and the adjustment of the fixture fixing position usually requires special tools or takes a lot of time, which is not conducive to the rapid switching and adjustment of the production line; and uneven force on the workpiece or vibration during processing can easily cause the fixture to loosen or deform, affecting the cutting quality and processing stability, restricting the development and application of laser cutting technology, and resulting in negative effects such as low cutting accuracy and low efficiency; therefore, in view of the problems existing in traditional fixture fixing equipment, there is an urgent need for a new laser cutting CNC machine tool fixture fixing equipment to improve the fixing effect, facilitate adjustment, and have good stability to meet the needs of laser cutting technology in industrial production.

Summary of the invention

In order to solve the above technical problems, the present invention is implemented through the following technical solutions: A fixture fixing device for a laser cutting CNC machine tool comprises a base, a return assembly is slidably mounted on the top of the base, the return assembly comprises a return platform mounted on the top of the base, a hydraulic cylinder is fixedly mounted on the middle of the top rear side of the return platform, and a translation assembly is slidably mounted on the top of the return assembly;

A clamping assembly, which is assembled on the top of the translation assembly and is used for clamping and positioning the workpiece at multiple angles;

The translation assembly includes a translation platform, which is movably mounted on the top of the return platform, and a socket is provided on the top of the translation platform. The translation platform moves translationally on the return platform through a hydraulic cylinder, and an adjustment member is fixedly mounted on the middle of the rear side of the top of the translation platform;

The clamping assembly includes a clamping plate installed on the top of the translation table, and positioning pieces are installed in the clamping plate in a left-right symmetrical shape. There are four groups of positioning pieces, and the positioning pieces are telescopically installed at the bottom of the clamping plate. The positioning pieces are used for inserting and positioning the clamping plate on the translation table. The positioning pieces are inserted into the translation table through sockets, wherein the top of the positioning piece is fixedly mounted on the clamping plate by bolts, and a polygonal clamp is assembled at the left corner of the front end of the clamping plate, and the polygonal clamp is used for engaging and clamping the workpiece.

Preferably, guide rails are fixedly installed on the left and right sides of the base, which are used to limit and guide the gear roller to the inner side of the track where the guide rails are located, so as to ensure the forward and backward movement accuracy of the return platform on the base.

Preferably, guide rails are fixedly installed on both sides of the left and right sides of the top of the return platform, gear rollers are installed side by side on the left and right sides of the return platform, and the overall limit of the gear roller is installed on the inner side of the top of the guide rail, the gear roller and the guide rail are rotatably installed, and the number of guide rails is six groups, and three groups are installed side by side on both sides of the return platform in a left-right symmetrical shape, a push plate is threadedly installed on the telescopic end of the hydraulic cylinder, and a screw is threadedly installed on the side of the push plate facing away from the hydraulic cylinder, the screw is threadedly connected to the rear end of the translation platform, and the push plate is located above the guide rail.

Preferably, racks are fixedly installed on both sides of the left and right sides of the bottom end of the translation platform, and the racks are meshed with gear rollers. Side ear blocks are fixedly installed on the left and right rear ends of the translation platform, and a tightening rod is threadedly installed on the middle part of the side ear block. The tightening rod is used for clamping and positioning the side of the return platform. While the translation platform slides with the return platform through the guide rail, the bottom of the translation platform is also horizontally meshed with the gear roller for transmission.

Preferably, the adjusting member includes a servo motor fixedly mounted in the middle of the bottom end of the translation table, a hydraulic rod is mounted on the top of the servo motor, and the output end of the hydraulic rod passes through the translation table and is fixedly connected to the output end of the servo motor, a locking gear is fixedly mounted on the hydraulic rod, the locking gear is fixedly mounted on the non-telescopic end of the hydraulic rod, the locking gear is engaged with the translation table, a bolt head is threadedly mounted on the top of the hydraulic rod, and the hydraulic rod is fixedly mounted to the clamping plate through the bolt head.

Preferably, the clamping assembly also includes a curved portion arranged on one side of the rear side of the clamp, a chamfered portion is arranged on the same side of the front side of the clamp, four groups of chamfered holes are symmetrically opened on the rear side of the clamp, and a concave portion is opened in the middle of the rear side of the clamp.

Preferably, the clamping assembly also includes a DD motor fixedly installed in the clamping plate, and the DD motor is arranged on the other side away from the curved portion and the chamfered portion, a main gear is installed on the screw rod at the bottom end of the DD motor, an auxiliary gear is meshingly installed on the side of the main gear, the auxiliary gear is rotatably installed in the clamping plate, and the auxiliary gear is meshed with the polygonal clamp.

Preferably, a rubber pad is fixedly installed on the other side of the clamping plate away from the curved surface portion and the chamfered portion, an arc-shaped spring plate is inserted between the rubber pad and the clamping plate, a telescopic pin is embedded in the middle of the rubber pad, and the telescopic pin and the middle of the arc-shaped spring plate are telescopically positioned.

Preferably, the polygonal clamp includes an arc track plate clamped on the end corner of the other side of the clamp, and the arc track plate is installed on the other side away from the curved portion and the chamfered portion, and the end of the arc track plate away from the chamfered portion is hinged with a movable rail plate, and a pin rod is hinged between the movable rail plate and the arc track plate.

Preferably, the arc track plate and the movable rail plate are fixedly installed with wall teeth in the middle of one side facing the clamping plate, and the wall teeth are meshed with the auxiliary gear. The upper and lower edges of the arc track plate and the movable rail plate are fixedly installed with convex rails, and the convex rails are slidably clamped with the clamping plate. The arc track plate and the movable rail plate are fixedly installed with clamping teeth in the middle of one side away from the clamping plate, and the clamping teeth are used to clamp and fix special-shaped workpieces, wherein the arc spring plate is hinged to the movable rail plate, and a baffle rod is inserted at the end of the arc spring plate away from the movable rail plate, and the away ends of the arc track plate and the movable rail plate are provided with protrusions for preventing derailment when the multilateral clamps are meshed and slid on the clamping plate.

The present invention provides a fixture fixing device for a laser cutting CNC machine tool, which has the following beneficial effects:

1. The clamp fixing device of the laser cutting CNC machine tool can use one end of the rubber pad installed on the clamp plate as a flexible clamping part for the workpiece, so as to flexibly clamp and fix the workpiece when the workpiece material is soft, brittle or small, and can also be combined with an arc spring plate installed between the clamp plate and the rubber pad as a structure for shielding and protecting the workpiece, so as to realize auxiliary clamping and protection of the workpiece.

2. The fixture fixing equipment of the laser cutting CNC machine tool uses a hydraulic cylinder to push the translation table to translate on the top of the return table. With the help of the meshing guidance of the guide rail on the bottom of the gear roller, and the meshing transmission of the gear rail located above and the gear roller, it can achieve precision control of the translation of the translation table. The translation path of the translation table is converted into the meshing transmission between the gear roller, the gear rail and the guide rail, so as to finely control the high-precision clamping and fixation of the translation table and the clamping plate on the top of the translation table to the workpiece, thereby preventing excessive clamping and damage to the workpiece.

3. The fixture fixing equipment of the laser cutting CNC machine tool can autonomously roughly adjust the distance between the translation assembly and the clamping assembly and the workpiece through the translational sliding of the return table on the base, and can approach or move away from the workpiece. The translation table is pushed by the hydraulic cylinder and the meshing transmission slides on the return table to achieve further approach or distance of the translation table and the clamp to the workpiece, which can provide a secondary change opportunity for the clamping distance and the controllable space of the workpiece, so as to cope with temporarily added workpieces or the clamping and fixing of workpieces with special structures.

4. The fixture fixing device of the laser cutting CNC machine tool can ensure that the overall forward and backward movement of the fixture fixing device is always in a straight line reciprocating adjustment process through the straight limit guidance of the guide rail to the gear roller and the cooperation of the side ear blocks located on the left and right sides of the return table. As long as the base is fixedly installed on the workbench, the forward and backward displacement of the translation component and the clamping component can be guaranteed not to be affected by the workpiece and the processing environment, ensuring the uniform precision of the clamping and fixing effect of the workpiece by the fixture fixing device, and the clamping accuracy of the workpiece will not be affected by the changes in the forward and backward positions of the translation component and the clamping component.

5. The fixture fixing device of the laser cutting CNC machine tool can temporarily release the clamping and fixing of the workpiece by activating the return component, so that the return table can move back along the guiding direction of the guide rail on the base, and it is convenient for the quick disassembly and replacement of the workpiece. There is no need to adjust the return of the clamping component, and the translation table and the clamping plate on the top of the return table can keep the clamping state of the workpiece unchanged during operation, so as to facilitate the repeated clamping operation of the next workpiece of the same batch, simplify the clamping operation process of the fixture fixing equipment for the workpieces of the same specifications and models, shorten the fixture adjustment time, and improve the clamping efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the external structure of a fixture fixing device for a laser cutting CNC machine tool according to the present invention;

FIG2 is a schematic diagram of the assembly structure of the base and the return assembly of the present invention;

FIG3 is a schematic diagram of the assembly structure of the translation assembly and the clamping assembly of the present invention;

FIG4 is a bottom view of the bottom structure of the translation assembly of the present invention;

FIG5 is a schematic diagram of a partial assembly structure of a clamping assembly and a translation assembly of the present invention;

FIG6 is a front structural schematic diagram of the clamping assembly of the present invention;

FIG7 is a schematic diagram of the back structure of the clamping assembly of the present invention;

FIG8 is a schematic diagram of a partial assembly structure of an adjusting member and a clamping plate of the present invention;

FIG9 is a schematic diagram of the disassembled structure of the arc rail plate and the movable rail plate of the present invention;

FIG10 is a schematic structural diagram of a multilateral clamp of the present invention;

FIG11 is a schematic diagram of the meshing structure of the DD motor and the polygonal clamp of the present invention;

FIG. 12 is a schematic diagram of the partial structure of the rubber pad and the clamping plate of the present invention.

In the figure: 1, base; 2, return assembly; 3, translation assembly; 4, clamping assembly; 11, guide rail; 21, return platform; 22, guide rail; 23, gear roller; 24, hydraulic cylinder; 25, push plate; 26, screw rod; 31, translation platform; 32, adjustment member; 33, gear rail; 34, side ear block; 35, tightening rod; 321, servo motor; 322, hydraulic rod; 324, positioning gear; 325, bolt head ; 41. Clamp; 42. Positioning piece; 43. Multi-sided clamp; 44. Curved portion; 45. Chamfered portion; 46. Chamfered hole; 47. Concave portion; 48. DD motor; 49. Main gear; 410. Auxiliary gear; 411. Rubber pad; 412. Arc spring plate; 413. Telescopic pin; 431. Arc track plate; 432. Pin rod; 433. Moving track plate; 434. Wall tooth; 435. Convex rail; 436. Clamp tooth.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

The first embodiment, as shown in FIGS. 1 to 12 , the present invention provides a technical solution: a fixture fixing device for a laser cutting CNC machine tool, comprising a base 1, a return assembly 2 is slidably mounted on the top of the base 1, the return assembly 2 comprises a return platform 21 mounted on the top of the base 1, a hydraulic cylinder 24 is fixedly mounted on the middle of the top rear side of the return platform 21, and a translation assembly 3 is slidably mounted on the top of the return assembly 2;

A clamping assembly 4, which is assembled on the top of the translation assembly 3 and is used for multi-angle clamping and positioning of the workpiece;

The translation assembly 3 includes a translation platform 31, which is movably mounted on the top of the return platform 21, and a socket is provided on the top of the translation platform 31. The translation platform 31 is translated on the return platform 21 by the hydraulic cylinder 24, and an adjustment member 32 is fixedly mounted on the middle of the rear side of the top of the translation platform 31;

The clamping assembly 4 includes a clamping plate 41 installed on the top of the translation stage 31, and positioning members 42 are installed in the clamping plate 41 in a left-right symmetrical shape. There are four groups of positioning members 42, and the positioning members 42 are telescopically installed at the bottom of the clamping plate 41. The positioning members 42 are used for inserting and positioning the clamping plate 41 on the translation stage 31. The positioning members 42 are inserted into the translation stage 31 through a socket, wherein the top of the positioning member 42 is fixedly installed on the clamping plate 41 by bolts, and a polygonal clamp 43 is assembled at the left corner of the front end of the clamping plate 41, and the polygonal clamp 43 is used for meshing and clamping the workpiece.

Guide rails 11 are fixedly mounted on the left and right sides of the base 1 .

Guide rails 22 are fixedly installed on both sides of the top of the return platform 21, and gear rollers 23 are installed side by side on the left and right sides of the return platform 21, and the gear rollers 23 are limitedly installed on the guide rails 11, the gear rollers 23 and the guide rails 22 are rotatably installed, and the number of guide rails 22 is six groups, and a push plate 25 is threadedly installed on the telescopic end of the hydraulic cylinder 24, and a screw rod 26 is threadedly installed on the side of the push plate 25 away from the hydraulic cylinder 24, and the screw rod 26 is threadedly connected to the rear end of the translation platform 31, and the push plate 25 is located above the guide rail 22. The guide rail 22 is used to horizontally guide the bottom of the translation platform 31, and is also used to horizontally guide the push plate 25.

Rack rails 33 are fixedly installed on both sides of the left and right sides of the bottom end of the translation platform 31, and the rack rails 33 are meshed with the gear roller 23. Side ear blocks 34 are fixedly installed on the left and right rear ends of the translation platform 31. A tightening rod 35 is threadedly installed in the middle of the side ear block 34. The tightening rod 35 is used to clamp and position the side of the return platform 21. When the translation platform 31 slides with the return platform 21 through the guide rail 22, the bottom of the translation platform 31 is also horizontally meshed with the gear roller 23 for transmission.

The adjusting member 32 includes a servo motor 321 fixedly mounted in the middle of the bottom end of the translation stage 31, a hydraulic rod 322 is mounted on the top of the servo motor 321, and the output end of the hydraulic rod 322 passes through the translation stage 31 and is fixedly connected to the output end of the servo motor 321, a locking gear 324 is fixedly mounted on the hydraulic rod 322, the locking gear 324 is fixedly sleeved on the non-telescopic end of the hydraulic rod 322, the locking gear 324 is engaged with the translation stage 31, a bolt head 325 is threadedly mounted on the top of the hydraulic rod 322, and the hydraulic rod 322 is fixedly mounted to the clamping plate 41 through the bolt head 325.

The clamping assembly 4 also includes a curved portion 44 arranged on one side of the rear side of the clamping plate 41, a chamfered portion 45 is arranged on the same side of the front side of the clamping plate 41, four groups of chamfered holes 46 are opened on the rear side of the clamping plate 41 in a bilaterally symmetrical manner, and a concave portion 47 is opened in the middle of the rear side of the clamping plate 41.

The clamping assembly 4 also includes a DD motor 48 fixedly installed in the clamping plate 41, and the DD motor 48 is arranged on the other side away from the curved portion 44 and the chamfered portion 45. A main gear 49 is installed on the screw rod at the bottom end of the DD motor 48, and an auxiliary gear 410 is meshingly installed on the side of the main gear 49. The auxiliary gear 410 is rotatably installed in the clamping plate 41, and the auxiliary gear 410 is meshed with the polygonal clamp 43.

When in use, two groups of clamp fixing devices as shown in FIG. 1 are used in conjunction with each other. Specifically, two groups of bases 1 are fixed oppositely on the workbench of the machine tool so that the distance between the two groups of bases 1 is slightly larger than the length or width of the workpiece. Then, according to the size and shape of the workpiece, the forward movement distance of the translation assembly 3 on the return assembly 2 is adjusted so that the workpiece is within the effective clamping range of the two groups of clamping assemblies 4, and the bottom of the workpiece is within the effective bearing range of the translation assembly 3, so that the clamping assembly 4 is in contact with the workpiece and provides sufficient support;

Then, the hydraulic rod 322 is activated to lift the clamping plate 41, so that the locking gear 324 is separated from the insertion limit at the top of the translation stage 31, and the servo motor 321 is activated to drive the hydraulic rod 322 to rotate, so as to change the angle between the clamping plate 41 and the translation stage 31. According to the specific structural shape of the workpiece, the corresponding clamping structure on the clamping plate 41 is selected, and the corresponding clamping structure is rotated and aligned toward the workpiece;

After alignment, the positioning piece 42 is enabled to descend and inserted into the corresponding socket. The four groups of positioning pieces 42 are correspondingly inserted into the four groups of sockets to lock the clamping position of the translation table 31. Then, the hydraulic cylinder 24 is enabled to continue to push the translation table 31 horizontally forward on the return table 21 to complete the clamping and fixation of the workpiece.

While locking the clamping orientation angle of the clamping plate 41 on the translation stage 31 by the positioning member 42, the tightness of the connection between the clamping plate 41 and the translation stage 31 structure can be increased, so that the translation stage 31 can provide more stable support for the clamping plate 41, so that the workpiece clamped by the clamping plate 41 is evenly stressed and does not deform.

When the hydraulic cylinder 24 is activated to push the translation table 31 to translate on the top of the return table 21, the meshing guidance of the guide rail 11 on the gear roller 23 below and the meshing transmission of the gear rail 33 located above and the gear roller 23 can be used to achieve precision control of the translation of the translation table 31 to prevent structural looseness and drift problems during the adjustment process. The translation path of the translation table 31 is converted into the meshing transmission between the gear roller 23, the gear rail 33 and the guide rail 11, so as to finely control the high-precision clamping and fixation of the workpiece by the translation table 31 and the clamping plate 41 on the top of the translation table 31 to prevent excessive clamping and damage of the workpiece.

Through the translational sliding of the return platform 21 on the base 1, the distance between the translation component 3 and the clamping component 4 and the workpiece can be roughly adjusted independently, and the workpiece can be approached or moved away from. Combined with the translation platform 31 being pushed by the hydraulic cylinder 24, the meshing transmission sliding on the return platform 21 can realize the translation platform 31 and the clamping plate 41 to further approach or move away from the workpiece, which can provide a secondary change opportunity for the clamping distance and the controllable space of the workpiece, so as to cope with temporarily added workpieces, or to clamp and fix workpieces with special structures.

Through the straight limiting guidance of the tooth roller 23 by the guide rail 11 and the cooperation of the side ear blocks 34 located on the left and right sides of the return platform 21, it can be ensured that the overall forward and backward movement of the clamping device is always in a straight line reciprocating adjustment process. As long as the base 1 is integrally fixed on the workbench, it can be ensured that the forward and backward displacement of the translation component 3 and the clamping component 4 is not affected by the workpiece and the processing environment, ensuring the uniform precision of the clamping and fixing effect of the workpiece by the clamping device, and the clamping accuracy of the workpiece will not be affected by the front and rear position changes of the translation component 3 and the clamping component 4.

Through the arrangement of the clamping plate 41, the polygonal clamping piece 43, the curved surface portion 44, the chamfered portion 45, the chamfered hole 46 and the concave portion 47 arranged thereon can be effectively utilized to clamp and fix the workpieces of corresponding structural shapes, wherein the curved surface portion 44 can make the clamping plate 41 fit and clamp on the curved surface portion of the workpiece, thereby achieving a fit and clamping effect on the workpiece with a curved surface structure; the chamfered portion 45 can make the clamping plate 41 fit and clamp on the chamfered portion of the workpiece, thereby achieving a fit and clamping effect on the workpiece with a chamfered structure; the chamfered hole 46 can make the clamping plate 41 fit and limit the protruding rod head-shaped portion on the workpiece, thereby achieving a fit and clamping effect on the workpiece with a locally protruding rod head-shaped structure; the concave portion 47 can fit and limit the protruding special-shaped portion on the workpiece, thereby achieving a fit and clamping effect on the workpiece with a locally protruding special-shaped structure; the clamping plate 41 is provided with a comprehensive clamping and fixing function for workpieces of various shapes.

At the same time, during the clamping of the workpiece, the return platform 21 can be moved back along the guide direction of the guide rail 11 on the base 1 by activating the return component 2, which can temporarily release the clamping of the workpiece, facilitate the quick disassembly and replacement of the workpiece, and do not require the clamping component 4 to perform return adjustment. The translation table 31 and the clamping plate 41 on the top of the return platform 21 can keep the clamping state of the workpiece unchanged during operation, so as to facilitate the repeated clamping operation of the next workpiece of the same batch, simplify the clamping operation process of the fixture fixing equipment for the workpiece of the same specification and model, shorten the fixture adjustment time, improve the clamping efficiency, and facilitate the rapid switching and adjustment of the production line.

The advantages of the present invention are:

Stable structure: The main structure adopts a design that combines the base 1, the return component 2 and the translation component 3, which provides stable support and translation, ensuring stability during the cutting process.

Easy adjustment: The front and rear positions of the return component 2 and the translation component 3, as well as the clamping angle of the clamping component 4 are adjustable, the hydraulic cylinder 24 controls the clamping force of the clamping plate 41, and the servo motor 321 controls the clamping angle of the clamping plate 41, making the equipment suitable for workpieces of different shapes and sizes, easy to adjust, and highly adaptable.

Improve work efficiency and cutting accuracy: Through stable fixation and precise adjustment, it effectively improves work efficiency and cutting accuracy, reduces scrap rate and improves processing quality.

The second embodiment is based on the first embodiment, please refer to Figures 1 to 8, a rubber pad 411 is fixedly installed on the other side of the clamping plate 41 away from the curved portion 44 and the chamfered portion 45, an arc-shaped spring plate 412 is inserted between the rubber pad 411 and the clamping plate 41, a telescopic pin 413 is embedded in the middle of the rubber pad 411, and the telescopic pin 413 and the middle of the arc-shaped spring plate 412 are telescopically positioned.

The polygonal clamp 43 includes an arc track plate 431 clamped on the other side corner of the clamp plate 41, and the arc track plate 431 is installed on the other side away from the curved portion 44 and the chamfered portion 45. The end of the arc track plate 431 away from the chamfered portion 45 is hinged with a movable track plate 433, and a pin rod 432 is hinged between the movable track plate 433 and the arc track plate 431.

Wall teeth 434 are fixedly installed in the middle of one side of the arc track plate 431 and the movable rail plate 433 facing the clamping plate 41, and the wall teeth 434 are meshed with the auxiliary gear 410. Convex rails 435 are fixedly installed at the upper and lower edges of the arc track plate 431 and the movable rail plate 433, and the convex rails 435 are slidably clamped with the clamping plate 41. Clamping teeth 436 are fixedly installed in the middle of one side of the arc track plate 431 and the movable rail plate 433 away from the clamping plate 41, and the clamping teeth 436 are used for clamping and fixing special-shaped workpieces, wherein the arc spring plate 412 is hinged to the movable rail plate 433, and a baffle rod is inserted at the end of the arc spring plate 412 away from the movable rail plate 433, and protrusions are provided at the away ends of the arc track plate 431 and the movable rail plate 433 to prevent the polygonal clamping member 43 from derailing when it meshes and slides on the clamping plate 41.

When in use, by setting the polygonal clamp 43, the clamping teeth 436 set on the inner wall of the arc track plate 431 and the movable track plate 433 can be used to achieve the close clamping of the gear-shaped or gear-toothed or concave-toothed workpiece; and the arc track plate 431 and the movable track plate 433 can be movably hinged by the pin rod 432, and the arc spring plate 412 is hinged and tensioned on the back of the movable track plate 433, combined with the activation of the DD motor 48 to drive the main gear 49 to mesh with the auxiliary gear 410, and the auxiliary gear 410 is used to realize the close clamping of the gear-shaped or gear-toothed workpiece. The meshing transmission action of the gear 410 and the raised wall teeth 434 changes the overall position and orientation of the polygonal clamp 43 at the end of the clamp 41, causing the arc spring plate 412 to slide between the clamp 41 and the rubber pad 411. After the polygonal clamp 43 as a whole is in bite-wrapped contact with the teeth or tooth groove structure of the workpiece, the arc spring plate 412 is positioned and locked by the telescopic pin 413 to fix the angle between the movable rail plate 433 and the arc rail plate 431, thereby achieving the fit clamping of such structure.

During this period, the locking control of the position of the arc spring plate 412 between the clamp plate 41 and the rubber pad 411 is achieved through the telescopic movement of the telescopic pin 413, and the movable rail plate 433 also slides on the clamp plate 41 through the meshing sliding of the arc track plate 431 on the clamp plate 41, thereby increasing the overall tight clamping effect of the polygonal clamp 43 on the workpiece with teeth or tooth groove structure, and at the same time, enabling the polygonal clamp 43 to fit and adapt to clamping the workpiece with teeth or tooth grooves.

One end of the rubber pad 411 can also be installed using the clamping plate 41 as a flexible clamping part for the workpiece, so as to flexibly clamp and fix the workpiece when the workpiece material is soft, brittle or small, and the arc-shaped spring plate 412 installed between the clamping plate 41 and the rubber pad 411 can be used as a structure to shield and protect the workpiece to achieve auxiliary clamping and protection of the workpiece, that is, the arc-shaped spring plate 412 can be combined with the movable rail plate 433 to match the arc-shaped rail plate 431, and can also be combined with the rubber pad 411 to flexibly clamp the workpiece, which is the second use method of the arc-shaped spring plate 412.

Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims (10)

1. A fixture fixing device for a laser cutting CNC machine tool, characterized in that it comprises a base (1), a return assembly (2) is slidably mounted on the top of the base (1), the return assembly (2) comprises a return platform (21) mounted on the top of the base (1), a hydraulic cylinder (24) is fixedly mounted on the middle of the top rear side of the return platform (21), and a translation assembly (3) is slidably mounted on the top of the return assembly (2); A clamping assembly (4), the clamping assembly (4) is assembled on the top of the translation assembly (3), and the clamping assembly (4) is used to clamp and position the workpiece at multiple angles; The translation assembly (3) comprises a translation platform (31), the translation platform (31) is movably mounted on the top of the return platform (21), and a socket is provided on the top of the translation platform (31). The translation platform (31) is translated on the return platform (21) by means of a hydraulic cylinder (24), and an adjustment member (32) is fixedly mounted on the middle of the rear side of the top of the translation platform (31); The clamping assembly (4) comprises a clamping plate (41) installed on the top of the translation platform (31), a positioning member (42) is installed in the clamping plate (41) in a left-right symmetrical shape, and the positioning member (42) is telescopically installed at the bottom of the clamping plate (41), the positioning member (42) is used for inserting and positioning the clamping plate (41) on the translation platform (31), the positioning member (42) is inserted into the translation platform (31) through a socket, and a polygonal clamping member (43) is assembled at the left corner of the front end of the clamping plate (41), and the polygonal clamping member (43) is used for meshing and clamping the workpiece. 2. A fixture fixing device for a laser cutting CNC machine tool according to claim 1, characterized in that guide rails (11) are fixedly installed on the left and right sides of the base (1). 3. A fixture fixing device for a laser cutting CNC machine tool according to claim 2, characterized in that: guide rails (22) are fixedly installed on both sides of the top of the return platform (21), and gear rollers (23) are installed side by side on the left and right sides of the return platform (21), and the gear rollers (23) are limitedly installed on the guide rails (11), the gear rollers (23) and the guide rails (22) are rotatably installed, and the number of guide rails (22) is six groups, and the telescopic end of the hydraulic cylinder (24) is threadedly installed with a push plate (25), and the side of the push plate (25) facing away from the hydraulic cylinder (24) is threadedly installed with a screw rod (26), and the screw rod (26) is threadedly connected to the rear end of the translation platform (31), and the push plate (25) is located above the guide rail (22). 4. According to claim 3, a fixture fixing device for a laser cutting CNC machine tool is characterized in that: racks (33) are fixedly installed on both sides of the bottom end of the translation table (31), and the racks (33) are meshed with the gear roller (23); side ear blocks (34) are fixedly installed on the left and right rear ends of the left and right sides of the translation table (31); a tightening rod (35) is threadedly installed in the middle of the side ear blocks (34); wherein, while the translation table (31) slides with the return table (21) through the guide rail (22), the bottom of the translation table (31) is also horizontally meshed with the gear roller (23) for transmission. 5. According to claim 4, a clamp fixing device for a laser cutting CNC machine tool is characterized in that: the adjusting member (32) includes a servo motor (321) fixedly installed in the middle of the bottom end of the translation table (31), a hydraulic rod (322) is installed on the top of the servo motor (321), and the output end of the hydraulic rod (322) passes through the translation table (31) and is fixedly connected to the output end of the servo motor (321), a locking gear (324) is fixedly installed on the hydraulic rod (322), and the locking gear (324) is installed in an engaging manner with the translation table (31), a bolt head (325) is threadedly installed on the top of the hydraulic rod (322), and the hydraulic rod (322) is fixedly installed with the clamp (41) through the bolt head (325). 6. According to claim 1, a fixture fixing device for a laser cutting CNC machine tool is characterized in that: the clamping assembly (4) also includes a curved portion (44) arranged on one side of the rear side of the clamp (41), a chamfered portion (45) is arranged on the same side of the front side of the clamp (41), and four groups of chamfered holes (46) are opened on the rear side of the clamp (41) in a left-right symmetrical shape, and a concave portion (47) is opened in the middle of the rear side of the clamp (41). 7. A fixture fixing device for a laser cutting CNC machine tool according to claim 6, characterized in that: the clamping assembly (4) also includes a DD motor (48) fixedly installed in the clamping plate (41), and the DD motor (48) is arranged on the other side away from the curved portion (44) and the chamfered portion (45), and a main gear (49) is installed on the bottom screw of the DD motor (48), and an auxiliary gear (410) is meshedly installed on the side of the main gear (49), and the auxiliary gear (410) is rotatably installed in the clamping plate (41), and the auxiliary gear (410) is meshed with the polygonal clamp (43). 8. According to claim 7, a clamp fixing device for a laser cutting CNC machine tool is characterized in that: a rubber pad (411) is fixedly installed on the other side of the clamp (41) away from the curved portion (44) and the chamfered portion (45), an arc-shaped spring plate (412) is inserted between the rubber pad (411) and the clamp (41), a telescopic pin (413) is embedded in the middle of the rubber pad (411), and the telescopic pin (413) and the middle of the arc-shaped spring plate (412) are telescopically positioned. 9. According to claim 8, a fixture fixing device for a laser cutting CNC machine tool is characterized in that: the polygonal clamp (43) includes an arc track plate (431) clamped on the end corner of the other side of the clamp (41), and the arc track plate (431) is installed on the other side away from the curved portion (44) and the chamfered portion (45), and the end of the arc track plate (431) away from the chamfered portion (45) is hinged with a movable track plate (433), and a pin rod (432) is hinged between the movable track plate (433) and the arc track plate (431). 10. A fixture fixing device for a laser cutting CNC machine tool according to claim 9, characterized in that: the arc track plate (431) and the movable track plate (433) are both fixedly installed with wall teeth (434) in the middle of a side facing the clamping plate (41), and the wall teeth (434) are meshed with the auxiliary gear (410), and the upper and lower edges of the arc track plate (431) and the movable track plate (433) are both fixedly installed with convex rails (435), and the convex rails (435) is slidably clamped with the clamping plate (41), and the middle part of the side of the arc track plate (431) and the movable track plate (433) facing away from the clamping plate (41) is fixedly installed with a clamping tooth (436), wherein the arc spring plate (412) is hinged with the movable track plate (433), and a blocking rod is inserted at one end of the arc spring plate (412) away from the movable track plate (433), and the facing ends of the arc track plate (431) and the movable track plate (433) are both provided with a protrusion.