Workpiece fixture for a numerically controlled machine tool and numerically controlled machine tool

Abstract

The application provides a workpiece clamp for a numerical control machine tool and the numerical control machine tool, and belongs to the technical field of machining. The clamp comprises a horizontal moving mechanism, a rotating mechanism, an inclinable work platform and a clamping mechanism; wherein the rotating mechanism is arranged on the top of the horizontal moving mechanism; the bottom of the rotating mechanism is fixedly connected with the top of the horizontal moving mechanism; the inclinable work platform is arranged on the top of the rotating mechanism; the bottom of the inclinable work platform is fixedly connected with the top of the rotating mechanism; the clamping mechanism is arranged on the top of the inclinable work platform; and the clamping mechanism is used for clamping workpieces. Through the cooperation of the horizontal moving mechanism, the rotating mechanism and the inclinable work platform, the clamp can realize the horizontal translation, vertical translation, horizontal angle rotation adjustment and inclination posture transformation of the workpiece relative to the horizontal plane after one-time clamping, so that the machining efficiency and the utilization rate of the numerical control machine tool are improved.

Description

Technical Field

[0001] This application relates to the field of machining technology, and more specifically, to a workpiece fixture for a CNC machine tool and a CNC machine tool. Background Technology

[0002] In the field of CNC machine tool processing, workpiece fixtures are key devices for achieving precise workpiece positioning and stable clamping, and their performance directly affects processing efficiency and accuracy.

[0003] Currently, most common CNC machine tool workpiece fixtures adopt a fixed structure or can only achieve simple translation. These types of workpiece fixtures generally suffer from poor flexibility and adaptability, resulting in unsatisfactory clamping effects. In addition, the few existing fixtures with tilting functions usually adopt multi-link or universal joint structures, with a large number of parts and high assembly accuracy requirements. At the same time, there is a lack of effective coordination between tilting and rotational movements, making it difficult to complete continuous machining in multiple postures after a single clamping. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this application is to provide a workpiece fixture for CNC machine tools.

[0006] The second aspect of this application is to propose a CNC machine tool.

[0007] In view of this, according to the first aspect of this application, a workpiece fixture for a CNC machine tool is provided, comprising: Horizontal movement mechanism; A rotating mechanism is disposed at the top of the horizontal moving mechanism; the bottom of the rotating mechanism is fixedly connected to the top of the horizontal moving mechanism. A tiltable work platform is disposed on top of the rotating mechanism; the bottom of the tiltable work platform is fixedly connected to the top of the rotating mechanism. A clamping mechanism is disposed on the top of the tiltable work platform; the clamping mechanism is used to clamp the workpiece.

[0008] In one possible technical solution, the horizontal movement mechanism further includes: First fixing plate; Two first sliding grooves are arranged parallel to each other at intervals on the top of the first fixed plate; Two first sliders are respectively slidably disposed within the two first slide grooves; A second fixing plate is disposed on the top of the two first sliders; the bottom ends of the second fixing plate are respectively fixedly connected to the top of the two first sliders. The second slide groove is disposed on the top of the second fixing plate; the second slide groove is perpendicular to the two first slide grooves. The second slider is slidably disposed within the second groove; the top of the second slider is fixedly connected to the bottom of the rotating mechanism.

[0009] In one possible technical solution, the rotating mechanism further includes: A hollow housing is fixedly mounted on the top of the second slider; A support platform is fixedly installed on the top of the hollow shell; the top of the support platform is provided with an annular groove; A rotating shaft is rotatably disposed within the hollow shell; one end of the rotating shaft is rotatably connected to the bottom wall of the hollow shell, and the other end passes through the top of the hollow shell to the top of the support platform; A rotary motor is fixedly mounted on the bottom wall of the hollow housing. The first gear is fixedly sleeved on the output shaft of the rotary motor; The second gear is fixedly sleeved on the rotating shaft; the second gear meshes with the first gear. A rotating platform is fixedly connected to one end of the rotating shaft located at the top of the support platform; the bottom of the rotating platform is provided with an annular block that matches the annular groove, and the annular block is slidably disposed in the annular groove; the top of the rotating platform is fixedly connected to the bottom of the tiltable working platform.

[0010] In one possible technical solution, the tiltable work platform further includes: A fixed base is fixedly installed on the top of the rotating platform; the top of the fixed base is provided with a hemispherical groove, and the bottom sides of the hemispherical groove are respectively provided with a first groove and a second groove; the bottom center of the hemispherical groove is provided with a third sliding groove, and a telescopic locking block is provided on each side of the hemispherical groove; A hemispherical platform is disposed in the hemispherical groove; the bottom of the hemispherical platform is provided with a third slider that matches the third sliding groove, and the third slider is slidably disposed in the third sliding groove; each side of the hemispherical platform is provided with a slot that matches the telescopic block, and each telescopic block is engaged in the corresponding slot; the top of the hemispherical platform is fixedly connected to the clamping mechanism. A first tilting component and a second tilting component are respectively disposed in the first groove and the second groove; one end of the first tilting component is rotatably connected to the side of the bottom of the hemispherical platform near the first groove, and the other end is fixedly connected to the bottom of the first groove; one end of the second tilting component is rotatably connected to the side of the bottom of the hemispherical platform near the second groove, and the other end is fixedly connected to the bottom of the second groove; the first tilting component and the second tilting component are symmetrical about the vertical central axis of the hemispherical platform, and the first tilting component and the second tilting component are used to drive the hemispherical platform to complete the tilting action.

[0011] In one possible technical solution, the first tilting component further includes: A first reset spring is disposed at the bottom of the first groove; one end of the first reset spring is fixedly connected to the bottom of the first groove. A connecting plate is fixedly connected to the end of the first reset spring away from the bottom of the first groove; A telescopic cylinder is disposed on the top of the connecting plate; the fixed end of the telescopic cylinder is rotatably connected to the top of the connecting plate, and the telescopic end of the telescopic cylinder is rotatably connected to the side of the hemispherical platform near the first groove.

[0012] In one possible technical solution, the clamping mechanism further includes: A clamping platform is fixedly mounted on the top of the hemispherical platform; the top of the clamping platform is provided with a fourth sliding groove and a fifth sliding groove opposite to each other; The fourth and fifth sliders are slidably disposed in the fourth and fifth slide grooves, respectively; A first flexible clamp is fixedly mounted on the top of the fourth slider; The second flexible clamp is fixedly mounted on the top of the fifth slider; the second flexible clamp is arranged opposite to the first flexible clamp.

[0013] In one possible technical solution, the first flexible clamp further comprises: The clamp housing is fixedly disposed on the top of the fourth slider; the clamp housing is provided with a plurality of first mounting holes on the side near the second flexible clamp; Multiple flexible units are disposed in the multiple first mounting holes in a one-to-one correspondence; each flexible unit has a telescopic end and a fixed end; the fixed end of each flexible unit is fixedly connected to the corresponding first mounting hole, and the telescopic end of each flexible unit points to the second flexible clamp; The flexible unit includes: The outer casing is fixedly installed in the corresponding first mounting hole; The second mounting hole is located on the side of the fixed housing near the second flexible clamp; a mounting groove is provided around the side wall of the second mounting hole; The second reset spring has one end fixedly connected to the bottom of the second mounting hole; A flexible column, one end of which is fixedly connected to the end of the second reset spring away from the bottom of the second mounting hole, and the other end extends out of the second mounting hole; A locking assembly is disposed in the mounting groove; the locking assembly surrounds the outside of the flexible column and is used to lock the flexible column.

[0014] In one possible technical solution, the locking component further includes: The outer ring of the limiting ring is fixedly connected to the mounting groove. A thrust ring is disposed on the side of the limiting ring near the second return spring; the outer ring of the thrust ring is slidably connected to the mounting groove; the inner ring of the thrust ring is wedge-shaped, and the diameter of the end of the inner ring of the thrust ring away from the limiting ring is the smallest. An elastic band is connected at one end to the inner ring of the limiting ring and at the other end to the inner ring of the thrust ring away from the limiting ring; the elastic band is wrapped around the outside of the flexible column. Multiple balls are disposed within the cavity formed by the limiting ring, the thrust ring, and the elastic band.

[0015] This application provides a workpiece fixture for a CNC machine tool. The horizontal moving mechanism can move horizontally and vertically, thereby adjusting the horizontal position of the clamping mechanism. A rotating mechanism is located on top of the horizontal moving mechanism; when the horizontal moving mechanism moves to a designated position, the horizontal angle of the clamping mechanism can be adjusted via the rotating mechanism. Next, a tilting work platform is located on top of the rotating mechanism. After the rotating mechanism rotates a designated angle horizontally, the tilting work platform can be controlled to tilt. The tilted work platform forms an angle with the horizontal surface, and the clamping mechanism... The clamping mechanism is located on top of the tiltable work platform, so it also has a certain angle with the horizontal plane, thus achieving the tilting of the clamping mechanism. The workpiece is fixed in the clamping mechanism, so the tilting of the tiltable work platform causes the workpiece to tilt, making it easier for the CNC machine tool to process the workpiece. Through the horizontal moving mechanism, the rotating mechanism, and the tiltable work platform, the clamping mechanism can move and rotate in the horizontal direction, and can also tilt to a certain angle with the horizontal plane, thereby enhancing the flexibility of the clamping mechanism, which in turn enhances the flexibility of the workpiece, and can improve the processing efficiency and processing accuracy of the CNC machine tool.

[0016] Compared with the prior art, this application has the following technical advantages: (1) Through the coordinated operation of the horizontal moving mechanism, the rotating mechanism and the tiltable working platform, the fixture can realize the horizontal and vertical translation of the workpiece in the horizontal plane, the rotation adjustment of the horizontal angle, and the tilt posture change relative to the horizontal plane after one clamping; this avoids repeated disassembly and clamping during the processing, significantly shortens the auxiliary time, and improves the processing efficiency and the utilization rate of CNC machine tools. (2) The tiltable work platform adopts a hemispherical platform with symmetrically arranged tilting components, and is equipped with a third slider and a third groove as a guide structure, so that the tilting action is smooth and controllable. At the same time, the cooperation between the telescopic block and the groove can provide reliable rigid locking in the non-tilted state, ensuring the positioning rigidity during horizontal processing.

[0017] (3) A clamping mechanism adopts an array of flexible units, in which the flexible columns in each flexible unit can independently extend and retract according to the concave and convex contours of the workpiece surface; during clamping, the multiple flexible columns adhere to the workpiece surface to form surface contact, which not only greatly increases the friction to improve clamping stability, but also effectively disperses the clamping force and avoids workpiece surface damage caused by hard contact, which is especially suitable for clamping precision parts or irregularly shaped workpieces; each flexible unit is equipped with a mechanical locking component, which squeezes the ball and elastic band to hold the flexible column by the wedge-shaped thrust ring; after clamping in place, rigid locking is performed to prevent the flexible column from retracting due to vibration during cutting, ensuring the clamping rigidity and positioning accuracy under dynamic processing conditions, and combining the dual advantages of flexible fit and rigidity maintenance.

[0018] According to a second aspect of this application, a CNC machine tool is provided, including a workpiece fixture for a CNC machine tool provided by any of the above designs.

[0019] The CNC machine tool provided in this application includes the workpiece fixture for the CNC machine tool provided by any of the above designs, and therefore has all the beneficial effects of the workpiece fixture for the CNC machine tool, which will not be repeated here.

[0020] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A schematic diagram of a workpiece fixture for a CNC machine tool is shown in one embodiment of this application; Figure 2 An exploded view of a rotating mechanism in a workpiece fixture for a CNC machine tool according to one embodiment of this application is shown; Figure 3An internal structural diagram of a rotating mechanism in a workpiece fixture for a CNC machine tool, according to one embodiment of this application, is shown. Figure 4 An exploded view of a tiltable work platform in a workpiece fixture for a CNC machine tool according to one embodiment of this application is shown; Figure 5 A diagram showing the internal mechanism of a tiltable work platform in a workpiece fixture for a CNC machine tool according to one embodiment of this application is provided. Figure 6 A schematic diagram of the clamping mechanism in a workpiece fixture for a CNC machine tool is shown in one embodiment of this application; Figure 7 A schematic diagram of the structure of a clamping platform in a workpiece fixture for a CNC machine tool is shown in one embodiment of this application; Figure 8 A schematic diagram of the structure of a fixture housing in a workpiece fixture for a CNC machine tool is shown in one embodiment of this application; Figure 9 A schematic diagram of the interior of a flexible unit in a workpiece fixture for a CNC machine tool is shown in one embodiment of this application; in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1. Horizontal moving mechanism; 11. First fixed plate; 12. First slide groove; 13. First slider; 14. Second fixed plate; 15. Second slide groove; 16. Second slider; 2. Rotating mechanism; 21. Hollow shell; 22. Support platform; 221. Annular groove; 23. Rotating shaft; 24. Rotary motor; 25. First gear; 26. Second gear; 27. Rotating platform; 271. Annular block; 3. Tiltable working platform; 31. Fixed base; 311. Hemispherical groove; 312. First groove; 313. Second groove; 314. Third slide rail; 315. Telescopic locking block; 32. Hemispherical platform; 321. Third slider; 322. Locking groove; 33. First tilting assembly; 331. First return spring; 332. Connecting plate; 333. Telescopic cylinder; 34. Second tilting assembly; 4. Clamping mechanism; 41. Clamping platform; 411. Fourth slide groove; 412. Fifth slide groove; 42. Fourth slider; 43. Fifth slider; 44. First flexible clamp; 441. Clamp housing; 4411. First mounting hole; 442. Flexible unit; 4421. Fixed housing; 4422. Second mounting hole; 44221. Mounting groove; 4423. Second return spring; 4424. Flexible column; 4425. Locking assembly; 44251. Limiting ring; 44252. Thrust ring; 44253. Elastic band; 44254. Ball bearing; 45. Second flexible clamp. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0024] The following reference Figures 1 to 9 This application describes a workpiece fixture for a CNC machine tool and a CNC machine tool according to some embodiments thereof.

[0025] Example 1: A workpiece fixture for a CNC machine tool includes a horizontal moving mechanism 1, a rotating mechanism 2, a tiltable work platform 3, and a clamping mechanism 4; wherein, the rotating mechanism 2 is disposed on top of the horizontal moving mechanism 1; the bottom of the rotating mechanism 2 is fixedly connected to the top of the horizontal moving mechanism 1; the tiltable work platform 3 is disposed on top of the rotating mechanism 2; the bottom of the tiltable work platform 3 is fixedly connected to the top of the rotating mechanism 2; the clamping mechanism 4 is disposed on top of the tiltable work platform 3; the clamping mechanism 4 is used for clamping the workpiece.

[0026] According to a workpiece fixture for a CNC machine tool according to this embodiment, the horizontal moving mechanism 1 can move horizontally and vertically, thereby adjusting the horizontal position of the clamping mechanism 4; the rotating mechanism 2 is disposed on top of the horizontal moving mechanism 1, and when the horizontal moving mechanism 1 moves to a specified position, the horizontal angle of the clamping mechanism 4 can be adjusted by the rotating mechanism 2; then, the tiltable work platform is disposed on top of the rotating mechanism 2, and when the rotating mechanism 2 rotates a specified angle in the horizontal direction, the tiltable work platform 3 can be controlled to tilt, and the tilted work platform 3 has a certain angle with the horizontal surface after tilting, and the clamping... Mechanism 4 is located on top of the tiltable work platform 3, so the clamping mechanism 4 also has a certain angle with the horizontal plane, thus achieving the tilting of the clamping mechanism 4. The workpiece is fixed in the clamping mechanism 4, so the tilting of the tiltable work platform 3 drives the workpiece to tilt, thus making it easier for the CNC machine tool to process the workpiece. Through the horizontal moving mechanism 1, the rotating mechanism 2 and the tiltable work platform 3, the clamping mechanism 4 can move and rotate in the horizontal direction, and can also tilt to a certain angle with the horizontal plane, thereby enhancing the flexibility of the clamping mechanism 4, and thus enhancing the flexibility of the workpiece, which can improve the processing efficiency and processing accuracy of the CNC machine tool.

[0027] As an optional implementation of this embodiment, the horizontal moving mechanism 1 further includes a first fixed plate 11, two first sliding grooves 12, two first sliders 13, a second fixed plate 14, a second sliding groove 15, and a second slider 16; wherein, the two first sliding grooves 12 are arranged parallel and spaced apart on the top of the first fixed plate 11; the two first sliders 13 are respectively slidably disposed in the two first sliding grooves 12; the second fixed plate 14 is disposed on the top of the two first sliders 13; the bottom ends of the second fixed plate 14 are respectively fixedly connected to the top of the two first sliders 13; the second sliding groove 15 is disposed on the top of the second fixed plate 14; the second sliding groove 15 is perpendicular to the two first sliding grooves 12; the second slider 16 is slidably disposed in the second sliding groove 15; the top of the second slider 16 is fixedly connected to the bottom of the rotating mechanism 2.

[0028] It should be noted that, through the design of the two first sliding grooves 12 and the two first sliders 13 on the first fixed plate 11, the rotating mechanism 2 can move along the direction of the first sliding groove 12; while the second fixed plate 14 is set on the top of the two first sliders 13. Through the design of the second sliding groove 15 and the second slider 16 on the second fixed plate, the rotating mechanism 2 can move along the direction of the second sliding groove 15. Since the second sliding groove 15 is perpendicular to the two first sliding grooves 12, the moving mechanism can move along two mutually perpendicular horizontal directions, and thus reach the designated position by moving in the horizontal direction.

[0029] As an optional implementation of this embodiment, the rotating mechanism 2 further includes a hollow housing 21, a support platform 22, a rotating shaft 23, a rotating motor 24, a first gear 25, a second gear 26, and a rotating platform 27; wherein, the hollow housing 21 is fixedly disposed on the top of the second slider 16; the support platform 22 is fixedly disposed on the top of the hollow housing 21; the top of the support platform 22 is provided with an annular groove 221; the rotating shaft 23 is rotatably disposed inside the hollow housing 21; one end of the rotating shaft 23 is rotatably connected to the bottom wall of the hollow housing 21, and the other end passes through the top of the hollow housing 21 to... The top of the support platform 22; the rotary motor 24 is fixedly mounted on the bottom wall of the hollow shell 21; the first gear 25 is fixedly mounted on the output shaft of the rotary motor 24; the second gear 26 is fixedly mounted on the rotating shaft 23; the second gear 26 is meshed with the first gear 25; the rotary platform 27 is fixedly connected to one end of the rotating shaft 23 located at the top of the support platform 22; the bottom of the rotary platform 27 is provided with an annular block 271 that matches the annular groove 221, and the annular block 271 is slidably mounted in the annular groove 221; the top of the rotary platform 27 is fixedly connected to the bottom of the tiltable working platform 3.

[0030] It should be noted that after the second slider 16 moves to the designated position, if it is necessary to adjust the horizontal angle of the workpiece, the rotary motor 24 can be started. The rotary motor 24 rotates, and its output shaft drives the first gear 25 to rotate. The second gear 26 is meshed with the first output wheel 25, so it also drives the second gear 26 to rotate. Since the second gear 26 is fixedly sleeved on the rotating shaft 23, and one end of the rotating shaft 23 is rotatably connected to the bottom wall of the hollow shell 21, and the other end passes through the top of the hollow shell 21 to the top of the support platform 22, when the second gear 26 rotates, it will drive the rotating shaft 23 to rotate, thereby causing one end of the rotating shaft 23 to rotate within the hollow shell 21. 1. The top rotates; the rotating platform 27 and the rotating shaft 23 are fixedly connected at one end of the top of the support platform 22. Therefore, when the rotating shaft 23 rotates, the rotating platform 27 rotates simultaneously with it, thereby realizing the horizontal rotation of the tiltable working platform 3 set on the top of the rotating platform 27; the support platform 22 has an annular groove 221 at the top, and the rotating platform 27 has an annular block 271 at the bottom that matches the annular groove 221. The annular block 271 is slidably set in the annular groove 221, so that when the rotating platform 27 rotates, the annular block 271 at the bottom of it rotates in the annular groove 221, thereby reducing the frictional loss generated when the rotating platform 27 rotates.

[0031] As an optional implementation of this embodiment, the tiltable working platform 3 further includes a fixed base 31, a hemispherical platform 32, a first tilting component 33, and a second tilting component 34; wherein, the fixed base 31 is fixedly disposed on the top of the rotating platform 27; the top of the fixed base 31 is provided with a hemispherical groove 311, and the bottom sides of the hemispherical groove 311 are respectively provided with a first groove 312 and a second groove 313; the bottom center of the hemispherical groove 311 is provided with a third sliding groove 314, and a telescopic locking block 315 is provided on each side of the hemispherical groove 311; the hemispherical platform 32 is disposed in the hemispherical groove 311; the bottom of the hemispherical platform 32 is provided with a third slider 321 that matches the third sliding groove 314, and the third slider 321 is slidably disposed in the third sliding groove 314; a locking groove 32 that matches the telescopic locking block 315 is provided on each side of the hemispherical platform 32. 2. Each telescopic locking block 315 is engaged in the corresponding slot 322; the top of the hemispherical platform 32 is fixedly connected to the clamping mechanism 4; the first tilting component 33 and the second tilting component 34 are respectively disposed in the first groove 312 and the second groove 313; one end of the first tilting component 33 is rotatably connected to the bottom of the hemispherical platform 32 near the first groove 312, and the other end is fixedly connected to the bottom of the first groove 312; one end of the second tilting component 34 is rotatably connected to the bottom of the hemispherical platform 32 near the second groove 313, and the other end is fixedly connected to the bottom of the second groove 313; the first tilting component 33 and the second tilting component 34 have the same structure, and the first tilting component 33 and the second tilting component 34 are symmetrical about the vertical central axis of the hemispherical platform 32, and the first tilting component 33 and the second tilting component 34 are used to drive the hemispherical platform 32 to complete the tilting action.

[0032] It should be noted that when it is necessary to tilt the workpiece, the two telescopic blocks 315 can be controlled to retract in their respective slots 322 first, thereby releasing the restriction of the telescopic blocks 315 on the position of the hemispherical platform 32; then, by controlling the first tilting component 33 and the second tilting component 34, which have the same structure, the hemispherical platform 32 can be tilted toward the side where the first groove 312 or the second groove 313 is located; specifically, when it is necessary to control the hemispherical platform 32 to tilt toward the side of the first groove 312, the second tilting component 33 is activated to tilt the hemispherical platform 32. The platform 32 is lifted up on the side near the second groove 313. During the lifting process, the third slider 321 at the bottom of the hemispherical platform 32 moves towards the second groove 313 in the third slide groove 314. At this time, the hemispherical platform 32 tilts towards the side where the first groove 312 is located. Similarly, if you want to control the hemispherical platform 32 to tilt towards the side where the second groove 313 is located, the first tilting component 33 is activated. Then, the hemispherical platform 32 is tilted towards the side where the first groove 312 or the second groove 313 is located through the first tilting component 33 and the second tilting component 34.

[0033] As an optional implementation of this embodiment, the first tilting component 33 further includes a first return spring 331, a connecting plate 332, and a telescopic cylinder 333; wherein, the first return spring 331 is disposed at the bottom of the first groove 312; one end of the first return spring 331 is fixedly connected to the bottom of the first groove 312; the connecting plate 332 is fixedly connected to the end of the first return spring 331 away from the bottom of the first groove 312; the telescopic cylinder 333 is disposed at the top of the connecting plate 332; the fixed end of the telescopic cylinder 333 is rotatably connected to the top of the connecting plate 332, and the telescopic end of the telescopic cylinder 333 is rotatably connected to the side of the hemispherical platform 32 near the first groove 312.

[0034] It should be noted that the first tilting component 33 and the second tilting component 34 have the same structure. When the workpiece needs to tilt towards the second groove 313, the telescopic cylinder 333 in the first tilting component 33 is activated first. The telescopic cylinder 333 extends upward. After the telescopic end of the telescopic cylinder 333 in the first tilting component 33 extends, it does not first drive the hemispherical platform 32 to move upward. Instead, it pushes its fixed end to drive the connecting plate 332 downward to compress the first return spring 331. When the first return spring 331 in the first tilting component 33 is compressed to its limit, the fixed end of the telescopic cylinder 333 in the first tilting component 33 will no longer move downward. Instead, the telescopic end will drive the hemispherical platform 32 upward, causing the third slider 321 at the bottom of the hemispherical platform 32 to slide in the third slide groove 314 towards the first groove. This causes the hemispherical platform 32 to gradually tilt towards the second groove 313. During the tilting process, the telescopic cylinder 333 in the second tilting component 34 follows the hemispherical platform. The platform 32 moves downward together with the side closest to the second groove, thereby causing the connecting plate 332 in the second tilting assembly 34 to compress the first return spring 331 in the second tilting assembly 34. When the first return spring 331 in the second tilting assembly 34 is also compressed to its limit, the telescopic cylinder 333 in the first tilting assembly 33 is closed, completing the tilting of the hemispherical platform 32 towards the second groove 313. This causes the clamping mechanism 4, which is fixedly connected to the top of the hemispherical platform 32, to tilt towards the second groove 313, thereby achieving the tilting of the workpiece towards the second groove 313. Similarly, if it is necessary for the workpiece to tilt towards the first groove 312, the telescopic cylinder 333 in the second tilting assembly 34 is activated, and its principle is the same as when controlling the hemispherical platform 32 to tilt towards the second groove 313. By controlling the extension and retraction of the telescopic cylinder 333 inside the first tilting assembly 33 and the second tilting assembly 34, the workpiece can be tilted towards the side where the first groove 312 or the second groove 313 is located.

[0035] As an optional implementation of this embodiment, the clamping mechanism 4 further includes a clamping platform 41, a fourth slider 42, a fifth slider 43, a first flexible clamp 44, and a second flexible clamp 45; wherein, the clamping platform 41 is fixedly disposed on the top of the hemispherical platform 32; the top of the clamping platform 41 is provided with a fourth sliding groove 411 and a fifth sliding groove 412 opposite to each other; the fourth slider 42 and the fifth slider 43 are respectively slidably disposed in the fourth sliding groove 411 and the fifth sliding groove 412; the first flexible clamp 44 is fixedly disposed on the top of the fourth slider 42; the second flexible clamp 45 is fixedly disposed on the top of the fifth slider 43; the second flexible clamp 45 has the same structure as the first flexible clamp 44, and the second flexible clamp 45 is arranged opposite to the first flexible clamp 44.

[0036] It should be noted that the top of the clamping platform 41 is provided with a fourth slide groove 411 and a fifth slide groove 412, and the fourth slider 42 and the fifth slider 43 are respectively slidably disposed in the fourth slide groove 411 and the fifth slide groove 412, which can realize that the fourth slider 42 and the fifth slider 43 are close to each other or far apart from each other, thereby making the first flexible clamp 44 and the second flexible clamp 45 close to each other and far apart from each other; the clamping and releasing of the workpiece is realized by the closeness and distance between the first flexible clamp 44 and the second flexible clamp 45.

[0037] As an optional implementation of this embodiment, the first flexible clamp 44 further includes a clamp housing 441 and a plurality of flexible units 442; wherein, the clamp housing 441 is fixedly disposed on the top of the fourth slider 42; the clamp housing 441 is provided with a plurality of first mounting holes 4411 on the side near the second flexible clamp 45; the plurality of flexible units 442 are disposed one-to-one in the plurality of first mounting holes 4411; the flexible unit 442 has a telescopic end and a fixed end; the fixed end of each flexible unit 442 is fixedly connected to the corresponding first mounting hole 4411, and the telescopic end of each flexible unit 442 points to the second flexible clamp 45; It should be noted that when clamping a workpiece is required, the workpiece is placed in the first flexible clamp 44 and the second flexible clamp 45. At this time, the first flexible clamp 44 and the second flexible clamp 45 move towards the workpiece. When the first flexible clamp 44 and the second flexible clamp 45 move to contact the workpiece, they continue to move towards the workpiece. At this time, the telescopic ends of the multiple flexible units 442 inside the two clamps will have different degrees of compression according to the surface of the workpiece, thereby achieving clamping of the workpiece. The flexible units 442 expand and contract to different degrees according to the unevenness of the workpiece surface, so that the first flexible clamp 44 and the second flexible clamp 45 can better fit the workpiece surface and achieve a better clamping effect on the workpiece.

[0038] As an optional implementation of this embodiment, the flexible unit 442 further includes a fixed outer shell 4421, a second mounting hole 4422, a second return spring 4423, a flexible column 4424, and a locking assembly 4425; wherein, the fixed outer shell 4421 is fixedly disposed in the corresponding first mounting hole 4411; the second mounting hole 4422 is disposed on the side of the fixed outer shell 4421 near the second flexible clamp 45; a mounting groove 44221 is provided around the side wall of the second mounting hole 4422; one end of the second return spring 4423 is fixedly connected to the bottom of the second mounting hole 4422; one end of the flexible column 4424 is fixedly connected to the end of the second return spring 4423 away from the bottom of the second mounting hole 4422, and the other end extends outside the second mounting hole 4422; the locking assembly 4425 is disposed in the mounting groove 44221; the locking assembly 4425 surrounds the outside of the flexible column 4424 and is used to lock the flexible column 4424.

[0039] It should be noted that when the first flexible clamp 44 and the second flexible clamp 45 move toward the workpiece to perform clamping operations, firstly, the flexible column 4424 of the flexible unit 442 contacts the workpiece surface, and then continues to move toward the workpiece, so that the flexible column 4424 is squeezed by the workpiece and moves into the second mounting hole 4422, thereby squeezing the second return spring 4423. When the flexible column 4424 moves to clamp the workpiece, the locking assembly 4425 is activated to lock the flexible column 4424 axially. At this time, all the flexible columns 4424 in the flexible units 442 are fixed, thereby realizing the clamping of the workpiece by the first flexible clamp 44 and the second flexible clamp 45. When it is necessary to release the workpiece, the first flexible clamp 44 and the second flexible clamp 45 are controlled to move away from the workpiece, and then the locking assembly 4425 is closed. At this time, the restriction on the flexible column 4424 is removed, and the flexible column 4424 is reset under the action of the second return spring 4423.

[0040] As an optional implementation of this embodiment, the locking assembly 4425 further includes a limiting ring 44251, a thrust ring 44252, an elastic band 44253, and a plurality of balls 44254; wherein, the outer ring of the limiting ring 44251 is fixedly connected to the mounting groove 44221; the thrust ring 44252 is disposed on the side of the limiting ring 44251 near the second return spring 4423; the outer ring of the thrust ring 44252 is slidably connected to the mounting groove 44221; the thrust ring 44252 is slidably connected to the mounting groove 44221; the outer ring of ... The inner ring of 4252 is wedge-shaped, and the diameter of the inner ring of thrust ring 44252 is smallest at the end away from the limiting ring 44251; one end of elastic band 44253 is connected to the inner ring of limiting ring 44251, and the other end is connected to the end of inner ring of thrust ring 44252 away from limiting ring 44251; elastic band 44253 is wrapped around the outside of flexible column 4424; multiple balls 44254 are arranged in the cavity formed by limiting ring 44251, thrust ring 44252 and elastic band 44253.

[0041] It should be noted that when it is necessary to lock the flexible column 4424, the cylinder pushes the thrust ring 44252 towards the limiting ring 44251. Since the inner ring of the thrust ring 44252 is wedge-shaped, and the diameter of the end of the inner ring of the thrust ring 44252 away from the limiting ring 44251 is the smallest, the contact diameter between the thrust ring 44252 and the ball bearings 44254 gradually decreases during the pushing process, thus squeezing the ball bearings 44254. This causes multiple ball bearings 44252 to contract towards the center of the flexible column 4424, which in turn causes the elastic band 44253 to tighten and hold the flexible column 4424, thereby locking the flexible column 4424. When it is necessary to release the lock, simply control the cylinder to pull the thrust ring 44252 back to its original position. At this time, the elastic band 44253 resets, the holding of the flexible column 4424 disappears, and the lock on the flexible column 4424 is released.

[0042] According to an embodiment of this invention, a workpiece fixture for a CNC machine tool operates on the following principle: First, the workpiece is clamped using the first flexible clamp 44 and the second flexible clamp 45. After clamping and fixing, the CNC machine tool is started to process the workpiece. If horizontal movement is required during processing, the positions of the first slider 13 and the second slider 16 are adjusted to adjust the horizontal position of the workpiece. If horizontal rotation of the workpiece is required during processing, the rotary motor 24 is started. The rotary motor 24 rotates, driving the first gear 25 to rotate. The second gear 26 is meshed with the first gear 25, so it also drives the second gear 26 to rotate. This drives the rotating shaft 23 to rotate, causing one end of the rotating shaft 23 to rotate at the top of the hollow shell 21, which in turn drives the rotating platform 27 to rotate simultaneously, thus achieving horizontal rotation of the workpiece. The upward angle is adjusted; if it is necessary to tilt the workpiece towards the first groove 312, first control the two telescopic blocks 315 to retract in their respective corresponding slots 322, releasing the restriction of the telescopic blocks 315 on the position of the hemispherical platform 32; then, activate the telescopic cylinder 333 in the second tilting assembly 33 to lift the side of the hemispherical platform 32 close to the second groove 313. During the lifting process, the third slider 321 at the bottom of the hemispherical platform 32 moves towards the second groove 313 in the third slide groove 314. At this time, the hemispherical platform 32 tilts towards the side where the first groove 312 is located. Through the design of the rotating mechanism 2 and the tiltable working platform 3, the horizontal rotation and tilting of the workpiece can be realized during the processing, improving the processing efficiency.

[0043] According to an embodiment of the workpiece fixture for a CNC machine tool, through the coordinated operation of a horizontal moving mechanism, a rotating mechanism, and a tiltable work platform, the fixture can achieve lateral and vertical translation of the workpiece in the horizontal plane, rotational adjustment of the horizontal angle, and tilt posture change relative to the horizontal plane after one clamping. This avoids repeated disassembly and clamping during the processing, significantly shortens auxiliary time, and improves processing efficiency and the utilization rate of the CNC machine tool. The tiltable work platform adopts a hemispherical platform with symmetrically arranged tilting components, and is equipped with a third slider and a third slide as a guide structure, so that the tilting action is smooth and controllable. Meanwhile, the cooperation between the telescopic block and the slot provides reliable rigid locking in a non-tilted state, ensuring positioning rigidity during horizontal machining. The clamping mechanism adopts an array of flexible units, and the flexible columns in each flexible unit can independently extend and retract according to the concave and convex contours of the workpiece surface. During clamping, the multiple flexible columns conform to the workpiece surface to form surface contact, which not only greatly increases the friction to improve clamping stability, but also effectively disperses the clamping force, avoiding workpiece surface damage caused by hard contact. It is especially suitable for clamping precision parts or irregularly shaped workpieces. Each flexible unit is equipped with a mechanical locking component, which squeezes the balls and elastic bands to hold the flexible columns tightly through a wedge-shaped thrust ring. Rigid locking is performed after clamping in place, which can prevent the flexible columns from retracting due to vibration during cutting, ensuring clamping rigidity and positioning accuracy under dynamic machining conditions, and combining the dual advantages of flexible contact and rigidity maintenance.

[0044] Example 2: A CNC machine tool, including the workpiece fixture for the CNC machine tool as described in Example 1 or Example 2; therefore, it has all the technical effects of Example 1 and Example 2, which will not be repeated here.

[0045] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A workpiece fixture for a CNC machine tool, characterized in that, include: Horizontal movement mechanism (1); A rotating mechanism (2) is disposed on the top of the horizontal moving mechanism (1); the bottom of the rotating mechanism (2) is fixedly connected to the top of the horizontal moving mechanism (1); A tiltable work platform (3) is disposed on the top of the rotating mechanism (2); the bottom of the tiltable work platform (3) is fixedly connected to the top of the rotating mechanism (2); A clamping mechanism (4) is provided on the top of the tiltable work platform (3); the clamping mechanism (4) is used to clamp the workpiece.

2. The workpiece fixture for CNC machine tools according to claim 1, characterized in that, The horizontal movement mechanism (1) includes: First fixing plate (11); Two first sliding grooves (12) are arranged parallel to each other on the top of the first fixed plate (11); Two first sliders (13) are respectively slidably disposed in the two first slide grooves (12); The second fixing plate (14) is disposed on the top of the two first sliders (13); the bottom ends of the second fixing plate (14) are respectively fixedly connected to the top of the two first sliders (13); The second slide groove (15) is disposed on the top of the second fixing plate (14); the second slide groove (15) is perpendicular to the two first slide grooves (12); The second slider (16) is slidably disposed in the second groove (15); the top of the second slider (16) is fixedly connected to the bottom of the rotating mechanism (2).

3. The workpiece fixture for CNC machine tools according to claim 2, characterized in that, The rotating mechanism (2) includes: A hollow shell (21) is fixedly mounted on the top of the second slider (16); A support platform (22) is fixedly installed on the top of the hollow shell (21); the top of the support platform (22) is provided with an annular groove (221). A rotating shaft (23) is rotatably disposed inside the hollow shell (21); one end of the rotating shaft (23) is rotatably connected to the bottom wall of the hollow shell (21), and the other end passes through the top of the hollow shell (21) to the top of the support platform (22); A rotary motor (24) is fixedly mounted on the bottom wall of the hollow housing (21); The first gear (25) is fixedly sleeved on the output shaft of the rotary motor (24); The second gear (26) is fixedly sleeved on the rotating shaft (23); the second gear (26) meshes with the first gear (25); A rotating platform (27) is fixedly connected to one end of the rotating shaft (23) located at the top of the support platform (22); the bottom of the rotating platform (27) is provided with an annular block (271) that matches the annular groove (221), and the annular block (271) is slidably disposed in the annular groove (221); the top of the rotating platform (27) is fixedly connected to the bottom of the tiltable working platform (3).

4. The workpiece fixture for CNC machine tools according to claim 3, characterized in that, The tiltable work platform (3) includes: A fixed base (31) is fixedly installed on the top of the rotating platform (27); the top of the fixed base (31) is provided with a hemispherical groove (311), and the bottom sides of the hemispherical groove (311) are respectively provided with a first groove (312) and a second groove (313); the bottom center of the hemispherical groove (311) is provided with a third sliding groove (314), and the sides of the hemispherical groove (311) are respectively provided with a telescopic block (315); A hemispherical platform (32) is disposed in the hemispherical groove (311); the bottom of the hemispherical platform (32) is provided with a third slider (321) that matches the third slide groove (314), and the third slider (321) is slidably disposed in the third slide groove (314); a slot (322) that matches the telescopic block (315) is provided on each side of the hemispherical platform (32), and each telescopic block (315) is engaged in the corresponding slot (322); the top of the hemispherical platform (32) is fixedly connected to the clamping mechanism (4); The first tilting component (33) and the second tilting component (34) are respectively disposed in the first groove (312) and the second groove (313); one end of the first tilting component (33) is rotatably connected to the bottom of the hemispherical platform (32) near the first groove (312), and the other end is fixedly connected to the bottom of the first groove (312); one end of the second tilting component (34) is rotatably connected to the bottom of the hemispherical platform (32) near the second groove (313), and the other end is fixedly connected to the bottom of the second groove (313); the first tilting component (33) and the second tilting component (34) are symmetrical about the vertical central axis of the hemispherical platform (32), and the first tilting component (33) and the second tilting component (34) are used to drive the hemispherical platform (32) to complete the tilting action.

5. The workpiece fixture for CNC machine tools according to claim 4, characterized in that, The first tilting component (33) includes: A first reset spring (331) is disposed at the bottom of the first groove (312); one end of the first reset spring (331) is fixedly connected to the bottom of the first groove (312); The connecting plate (332) is fixedly connected to one end of the first reset spring (331) away from the bottom of the first groove (312); A telescopic cylinder (333) is disposed on the top of the connecting plate (332); the fixed end of the telescopic cylinder (333) is rotatably connected to the top of the connecting plate (332), and the telescopic end of the telescopic cylinder (333) is rotatably connected to the side of the hemispherical platform (32) near the first groove (312).

6. The workpiece fixture for CNC machine tools according to claim 5, characterized in that, The clamping mechanism (4) includes: A clamping platform (41) is fixedly installed on the top of the hemispherical platform (32); the top of the clamping platform (41) is provided with a fourth slide groove (411) and a fifth slide groove (412) opposite each other. The fourth slider (42) and the fifth slider (43) are slidably disposed in the fourth slide groove (411) and the fifth slide groove (412), respectively; The first flexible clamp (44) is fixedly disposed on the top of the fourth slider (42); The second flexible clamp (45) is fixedly disposed on the top of the fifth slider (43); the second flexible clamp (45) is arranged opposite to the first flexible clamp (44).

7. The workpiece fixture for CNC machine tools according to claim 6, characterized in that, The first flexible clamp (44) includes: The clamp housing (441) is fixedly disposed on the top of the fourth slider (42); the clamp housing (441) has a plurality of first mounting holes (4411) on the side near the second flexible clamp (45). Multiple flexible units (442) are disposed in the multiple first mounting holes (4411) in a corresponding manner; each flexible unit (442) has a telescopic end and a fixed end; the fixed end of each flexible unit (442) is fixedly connected to the corresponding first mounting hole (4411), and the telescopic end of each flexible unit (442) points to the second flexible clamp (45). The flexible unit (442) includes: The outer casing (4421) is fixedly disposed in the corresponding first mounting hole (4411); The second mounting hole (4422) is provided on the side of the fixed housing (4421) near the second flexible clamp (45); a mounting groove (44221) is provided around the side wall of the second mounting hole (4422). The second return spring (4423) is fixedly connected at one end to the bottom of the second mounting hole (4422); The flexible column (4424) has one end fixedly connected to the end of the second reset spring (4423) away from the bottom of the second mounting hole (4422), and the other end extends out of the second mounting hole (4422); A locking assembly (4425) is disposed in the mounting groove (44221); the locking assembly (4425) surrounds the outside of the flexible column (4424) for locking the flexible column (4424).

8. The workpiece fixture for CNC machine tools according to claim 7, characterized in that, The locking assembly (4425) includes: The outer ring of the limiting ring (44251) is fixedly connected to the mounting groove (44221); A thrust ring (44252) is disposed on the side of the limiting ring (44251) near the second return spring (4423); the outer ring of the thrust ring (44252) is slidably connected to the mounting groove (44221); the inner ring of the thrust ring (44252) is wedge-shaped, and the diameter of the end of the inner ring of the thrust ring (44252) away from the limiting ring (44251) is the smallest; The elastic band (44253) has one end connected to the inner ring of the limiting ring (44251) and the other end connected to the end of the inner ring of the thrust ring (44252) away from the limiting ring (44251); the elastic band (44253) is wrapped around the outside of the flexible column (4424); Multiple balls (44254) are disposed in the cavity formed by the limiting ring (44251), the thrust ring (44252) and the elastic band (44253).

9. A CNC machine tool, characterized in that, Includes the workpiece fixture for CNC machine tools as described in any one of claims 1-8.

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