Error compensation device of five-axis linkage numerical control machine tool

Abstract

The invention relates to the field of five-axis linkage numerical control machine tools, in particular to a five-axis linkage numerical control machine tool error compensation device, a driving assembly used for driving a first locking assembly to move is arranged at the top end of the first locking assembly, and an adjusting assembly used for driving two second locking assemblies to move in opposite directions is arranged in a base. An operation assembly used for driving the adjusting assembly to rotate is arranged in the base. The sliding blocks on the protection frame are vertically put down along the sliding grooves through the handles until the bottoms of the sliding blocks are inserted into the inserting grooves; in the lowering process, limiting blocks on the inner wall of the protection frame can press the operation plate downwards; meanwhile, a hand wheel is rotated, two locking rods II are driven to move in opposite directions and are inserted into locking holes II of sliding blocks of the protection frame, the protection frame is firmly locked on the base, and dustproof and anti-collision physical protection is formed for a through groove and an internal mechanism; the laser interferometer can be protected by using the protection frame; and when the protection frame is taken down, the laser interferometer can be conveniently disassembled.

Description

Technical Field

[0001] This invention relates to the field of five-axis linkage CNC machine tools, specifically a five-axis linkage CNC machine tool error compensation device. Background Technology

[0002] A five-axis CNC machine tool is a high-precision machine tool specifically designed for machining complex curved surfaces.

[0003] Currently, five-axis CNC machine tools generate motion errors during operation. Therefore, error compensation devices are needed to reduce the impact of motion errors on the products processed by the five-axis CNC machine tools. These devices typically include a multi-axis compensation module, a control motherboard, and an error identification system to achieve comprehensive compensation for both linear and nonlinear errors.

[0004] However, when using the laser interferometer in the multi-axis compensation module to perform high-precision measurement of linear axis positioning, straightness, and angular errors for initial calibration, the laser interferometer is exposed to the outside and lacks protective devices, which can cause damage to the laser interferometer under external interference, making it inconvenient to monitor the five-axis linkage CNC machine tool in real time. Therefore, to address the above problems, an error compensation device for a five-axis linkage CNC machine tool is proposed. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a five-axis linkage CNC machine tool error compensation device.

[0006] The technical solution adopted by this invention to solve its technical problem is: a five-axis linkage CNC machine tool error compensation device, including a base installed on the CNC machine tool, a laser interferometer for monitoring the CNC machine tool is arranged inside the base, a protective frame for protecting the laser interferometer is arranged at the top of the base, a locking device one for locking the laser interferometer is arranged inside the base, and a locking device two for locking the protective frame is arranged inside the base; the locking device one includes a locking component one arranged inside the base for locking the laser interferometer, and a driving component for driving the locking component one to move is arranged at the top of the locking component one; the locking device two includes a locking component two arranged inside the base for locking the protective frame, and there are two locking components two; an adjusting component for driving the two locking components two to move in opposite directions is arranged inside the base, and there are two adjusting components; an operating component for driving the adjusting components to rotate is arranged inside the base, and a connecting component for allowing the two adjusting components to rotate synchronously is arranged between the two adjusting components.

[0007] Preferably, the top of the base is fixedly equipped with a mounting bracket for protecting the laser interferometer in conjunction with the protective frame. The mounting bracket has a through slot for the laser interferometer to monitor the CNC machine tool, a sliding groove for the protective frame to move up and down, a placement slot for placing the laser interferometer, and a slot communicating with the sliding groove.

[0008] Preferably, the bottom of the laser interferometer is fixedly equipped with a placement block for placing in a placement slot, and the placement block has a locking hole for cooperating with a locking component to lock the placement block.

[0009] Preferably, a handle for driving the protective frame to move up and down is fixedly installed at the top of the protective frame, sliders for moving in the slide groove are fixedly installed at the left and right ends of the protective frame, a limiting block for locking the driving component is fixedly installed on the inner wall of the protective frame, and a second locking hole is provided on the slider for cooperating with the second locking component to lock the protective frame.

[0010] Preferably, the locking assembly includes a locking rod disposed in the base for insertion into a locking hole. A movable plate for driving the locking rod is fixedly installed at the end of the locking rod away from the placement block. A spring for driving the movable plate is fixedly installed at the end of the movable plate away from the locking rod.

[0011] Preferably, the drive assembly includes a connecting plate fixedly installed on the top of the movable plate, and an operating plate for locking the movable plate in cooperation with a limiting block is fixedly installed on the top of the connecting plate.

[0012] Preferably, the operating component includes a rotating shaft disposed within the base for rotation, a handwheel for driving the rotating shaft to rotate is fixedly mounted on the right end of the rotating shaft, and a bevel gear for driving the adjustment component to rotate is fixedly mounted on the left end of the rotating shaft.

[0013] Preferably, the adjustment assembly includes a transmission shaft disposed within the base for driving two locking assemblies 2 to move in opposite directions, and a bevel gear 2 for meshing with a bevel gear 1 is fixedly mounted on the shaft.

[0014] Preferably, the second locking assembly includes a threaded sleeve plate disposed in the base for threaded connection with the drive shaft, and a second locking rod for insertion into the second locking hole is fixedly installed on the threaded sleeve plate.

[0015] Preferably, the connecting assembly includes a rotating rod disposed within the base for rotation, and bevel gears three for meshing with bevel gear two are fixedly installed at the left and right ends of the rotating rod.

[0016] The advantages of this invention are: This invention allows the slider on the protective frame to be vertically lowered along the slide groove until its bottom is inserted into the slot. During the lowering process, the limiting block on the inner wall of the protective frame presses down on the operating plate, enabling the installation and fixation of the laser interferometer. Simultaneously, rotating the handwheel drives the two locking rods to move in opposite directions, inserting them into the locking holes of the protective frame slider, firmly locking the protective frame onto the base. This provides dustproof and impact-proof physical protection for the through groove and internal mechanism. This invention not only protects the laser interferometer using the protective frame but also facilitates disassembly of the laser interferometer when the protective frame is removed. It solves the problem that the laser interferometer, being exposed to the outside and lacking protective devices, is susceptible to damage from external interference, making real-time monitoring of the five-axis CNC machine tool inconvenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the base structure of the present invention; Figure 3 This is a schematic diagram of the laser interferometer structure of the present invention; Figure 4 This is a schematic diagram of the protective frame structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the locking device of the present invention; Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle; Figure 8 This is a schematic diagram of the second locking device of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point C.

[0019] In the diagram: 100, base; 101, mounting bracket; 102, through groove; 103, slide groove; 104, slot; 105, placement slot; 200, laser interferometer; 201, placement block; 202, locking hole one; 300, protective frame; 301, handle; 302, limiting block; 303, slider; 304, locking hole two; 400, locking device one; 410, locking assembly one; 411, locking rod one; 412, moving plate; 41 3. Spring; 420. Drive assembly; 421. Connecting plate; 422. Operating plate; 500. Locking device two; 510. Operating assembly; 511. Handwheel; 512. Rotating shaft; 513. Bevel gear one; 520. Adjusting assembly; 521. Drive shaft; 522. Bevel gear two; 530. Locking assembly two; 531. Threaded sleeve plate; 532. Locking rod two; 540. Connecting assembly; 541. Rotating rod; 542. Bevel gear three. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail. This application discloses a five-axis linkage CNC machine tool error compensation device, including a base 100 mounted on the CNC machine tool. A laser interferometer 200 for monitoring the CNC machine tool is disposed within the base 100. A protective frame 300 for protecting the laser interferometer 200 is disposed at the top of the base 100. A locking device 400 for locking the laser interferometer 200 is disposed within the base 100, and a second locking device 500 for locking the protective frame 300 is disposed within the base 100. The first locking device 400 includes a locking component 410 disposed within the base 100 for locking the laser interferometer 200. The top of the locking component 410 is provided with a driving component 420 for driving the locking component 410 to move. The locking device 500 includes a second locking component 530 disposed in the base 100 for locking the protective frame 300, and there are two locking components 530. The base 100 is provided with an adjusting component 520 for driving the two locking components 530 to move in opposite directions, and there are two adjusting components 520. The base 100 is provided with an operating component 510 for driving the adjusting components 520 to rotate. A connecting component 540 is provided between the two adjusting components 520 for allowing the two adjusting components 520 to rotate synchronously.

[0022] Reference Figure 2 The base 100 is fixedly installed at a suitable position on the five-axis linkage CNC machine tool. It has an internal cavity to accommodate various locking and driving mechanisms. A mounting bracket 101 is fixedly installed on the top of the base 100 to cooperate with the protective frame 300 to protect the laser interferometer 200. The mounting bracket 101 is fixedly installed on the top of the base 100 by bolts. The mounting bracket 101 has a through slot 102 for the laser interferometer 200 to monitor the CNC machine tool. The through slot 102 is directly opposite the laser emitting end of the laser interferometer 200 to ensure that the laser beam can pass through and perform precision monitoring of the moving parts of the machine tool. The mounting bracket 101 has a sliding groove 103 for the protective frame 300 to move up and down. The top of the base 100 has a placement slot 105 for placing the laser interferometer 200. The top of the base 100 has a slot 104 that communicates with the sliding groove 103.

[0023] Reference Figure 3 The bottom end of the laser interferometer 200 is fixedly equipped with a placement block 201 for placement in the placement groove 105. The shape of the placement block 201 matches the placement groove 105 and can be embedded therein for initial positioning. The placement block 201 is provided with a locking hole 202 for locking the placement block 201 in cooperation with the locking component 410. During operation, when the laser interferometer 200 needs to be installed, the placement block 201 at the bottom end of the laser interferometer 200 can be placed in the placement groove 105 and locked with the locking device 400. Therefore, the installation and fixation of the laser interferometer 200 can be realized.

[0024] Reference Figure 4 and Figure 5 The protective frame 300 is a U-shaped cover made of transparent high-strength material. A handle 301 is fixedly installed at the top of the protective frame 300 for driving its up and down movement, facilitating lifting. Slider blocks 303 are fixedly installed at both ends of the protective frame 300 for moving within the slide groove 103. The sliders 303 slide in conjunction with the slide groove 103, allowing the protective frame 300 to rise and fall vertically along the fixed frame 101. A limiting block 302 is fixedly installed on the inner wall of the protective frame 300 for locking the drive assembly 420. The sliders 303 have openings... There is a locking hole 304 for locking the protective frame 300 in conjunction with the locking component 530. During operation, when the laser interferometer 200 needs to be protected, the slider 303 on the protective frame 300 can be controlled by the handle 301 to move along the slide groove 103 and insert into the slot 104. When the protective frame 300 is fully inserted between the two fixed brackets 101, the driving component 420 can be locked by the limiting block 302 to prevent the locking component 410 from moving due to the movement of the driving component 420.

[0025] Reference Figure 6 and Figure 7 The locking assembly 410 includes a locking rod 411 disposed in the base 100 for insertion into the locking hole 202. The right end of the locking rod 411 can be inserted into the locking hole 202 of the placement block 201. A moving plate 412 for driving the locking rod 411 to move is fixedly installed at the end of the locking rod 411 away from the placement block 201. A spring 413 is connected between the left side of the moving plate 412 and the inner wall of the base 100. In the natural state, the elastic force of the spring 413 pushes the moving plate 412 and the locking rod 411 to move to the right, so that the locking rod 411 is kept in the locked state of being inserted into the locking hole 202.

[0026] Furthermore, the drive assembly 420 includes a connecting plate 421 fixedly installed on the top of the movable plate 412. The top of the connecting plate 421 is fixedly installed with an operating plate 422 for locking the movable plate 412 in cooperation with the limiting block 302. When the protective frame 300 descends to its lowest position, the limiting block 302 on its inner wall will press down on the operating plate 422, forcing the operating plate 422, the connecting plate 421 and the movable plate 412 to move as a whole, thereby compressing the spring 413 and inserting the locking rod 411 into the locking hole 202 to lock the laser interferometer 200 and prevent the laser interferometer 200 from shaking.

[0027] Reference Figure 8 and Figure 9 The operating component 510 includes a rotating shaft 512 disposed within the base 100 for rotation, the rotating shaft 512 being supported within the base 100 by bearings; a handwheel 511 for driving the rotating shaft 512 to rotate is fixedly installed at the right end of the rotating shaft 512, and a bevel gear 513 for driving the adjusting component 520 to rotate is fixedly installed at the left end of the rotating shaft 512.

[0028] Furthermore, there are two adjusting components 520, arranged symmetrically on the left and right sides. Each adjusting component 520 includes a horizontally arranged drive shaft 521, which is supported by bearings. A second bevel gear 522 is fixedly installed on each drive shaft 521, and the second bevel gear 522 meshes with the first bevel gear 513 of the operating component 510. The threads of the two drive shafts 521 are opposite in direction, one left-handed and the other right-handed. Therefore, when the two drive shafts 521 rotate synchronously in the same direction, the two threaded sleeves 531 will drive the second locking rod 532 to move in opposite or opposite linear directions.

[0029] Furthermore, there are two locking components 530, each corresponding to one of the two adjusting components 520. Each locking component 530 includes a threaded sleeve 531 with a threaded hole at its center that mates with the drive shaft 521. The drive is achieved through the threaded connection with the drive shaft 521. A vertically upward locking rod 532 is fixedly connected to the top of the threaded sleeve 531. The locking rod 532 can extend upward through the top wall of the base 100 and be inserted into the locking hole 304 of the slider 303.

[0030] Furthermore, the connecting assembly 540, used to ensure the synchronous rotation of the two adjusting assemblies 520, includes a horizontally positioned rotating rod 541 supported by bearings. A bevel gear 542 is fixedly mounted at each of its left and right ends; these two bevel gears 542 mesh with bevel gears 522 on the left and right adjusting assemblies 520 respectively; thus, power transmitted from the first bevel gear 513 to the second bevel gear 522 on either side can be achieved through connection.

[0031] Working principle: When protection of the laser interferometer 200 is required, the placement block 201 of the laser interferometer 200 can be placed into the placement slot 105. Since the protective frame 300 has been removed, the limiting block 302 no longer presses down on the operating plate 422, and the spring 413 pushes the locking rod 411 to automatically insert into the locking hole 202, firmly locking the laser interferometer 200 onto the base 100. Then, the slider 303 on the protective frame 300 is vertically lowered along the slide groove 103 through the handle 301 until its bottom is inserted into the slot 104. During the lowering process, the limiting block 302 on the inner wall of the protective frame 300 will press down on the operating plate 422 and lock the locking device 400, causing the locking rod 411 to insert into the placement slot 105 of the laser interferometer 200. The laser interferometer 200 can be installed and fixed in the locking hole 202 of the block 201. When the laser interferometer 200 is powered on, the laser beam passes through the through slot 102 to measure and compensate for the error of the machine tool. Then, the handwheel 511 is rotated in the opposite direction to drive the two locking rods 532 to move in opposite directions and insert them into the locking hole 304 of the slider 303 of the protective frame 300, so that the protective frame 300 is firmly locked on the base 100, forming a dustproof and impact-proof physical protection for the through slot 102 and the internal mechanism. This solves the problem that the laser interferometer 200 is exposed to the outside and lacks a protective device, which may cause damage to the laser interferometer 200 under external interference, making it inconvenient to monitor the five-axis linkage CNC machine tool in real time.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A five-axis linkage CNC machine tool error compensation device, comprising a base (100) mounted on the CNC machine tool, characterized in that: The base (100) houses a laser interferometer (200) for monitoring CNC machine tools. A protective frame (300) for protecting the laser interferometer (200) is located at the top of the base (100). A locking device (400) for locking the laser interferometer (200) is located within the base (100). A second locking device (500) for locking the protective frame (300) is also located within the base (100). The first locking device (400) includes a locking assembly (410) located within the base (100) for locking the laser interferometer (200). The top of the locking assembly (410) is equipped with a drive lock. The driving component (420) for moving the first locking component (410) includes a second locking component (530) disposed in the base (100) for locking the protective frame (300), and there are two second locking components (530). The base (100) is provided with an adjustment component (520) for driving the two second locking components (530) to move in opposite directions, and there are two adjustment components (520). The base (100) is provided with an operating component (510) for driving the adjustment component (520) to rotate, and a connecting component (540) for allowing the two adjustment components (520) to rotate synchronously is provided between the two adjustment components (520).

2. The error compensation device for a five-axis linkage CNC machine tool according to claim 1, characterized in that: The top of the base (100) is fixedly installed with a mounting bracket (101) for protecting the laser interferometer (200) in conjunction with the protective frame (300). The mounting bracket (101) has a through slot (102) for the laser interferometer (200) to monitor the CNC machine tool. The mounting bracket (101) has a sliding groove (103) for the protective frame (300) to move up and down. The top of the base (100) has a placement slot (105) for placing the laser interferometer (200). The top of the base (100) has a slot (104) for communicating with the sliding groove (103).

3. The error compensation device for a five-axis linkage CNC machine tool according to claim 2, characterized in that: The bottom end of the laser interferometer (200) is fixedly installed with a placement block (201) for placement in the placement slot (105). The placement block (201) has a locking hole (202) for locking the placement block (201) in cooperation with the locking component (410).

4. The error compensation device for a five-axis linkage CNC machine tool according to claim 2, characterized in that: The top of the protective frame (300) is fixedly equipped with a handle (301) for driving the protective frame (300) to move up and down. The left and right ends of the protective frame (300) are fixedly equipped with sliders (303) for moving in the slide groove (103). The inner wall of the protective frame (300) is fixedly equipped with a limiting block (302) for locking the drive assembly (420). The slider (303) is provided with a locking hole (304) for cooperating with the locking assembly (530) to lock the protective frame (300).

5. The error compensation device for a five-axis linkage CNC machine tool according to claim 4, characterized in that: The locking assembly (410) includes a locking rod (411) disposed in the base (100) for insertion into a locking hole (202). A movable plate (412) for driving the locking rod (411) to move is fixedly installed at the end of the locking rod (411) away from the placement block (201). A spring (413) for driving the movable plate (412) to move is fixedly installed at the end of the movable plate (412) away from the locking rod (411).

6. The error compensation device for a five-axis linkage CNC machine tool according to claim 5, characterized in that: The drive assembly (420) includes a connecting plate (421) fixedly installed on the top of the movable plate (412), and an operating plate (422) for locking the movable plate (412) in cooperation with the limiting block (302) is fixedly installed on the top of the connecting plate (421).

7. The error compensation device for a five-axis linkage CNC machine tool according to claim 4, characterized in that: The operating component (510) includes a rotating shaft (512) disposed in the base (100) for rotation. A handwheel (511) for driving the rotating shaft (512) to rotate is fixedly installed at the right end of the rotating shaft (512), and a bevel gear (513) for driving the adjusting component (520) to rotate is fixedly installed at the left end of the rotating shaft (512).

8. The error compensation device for a five-axis linkage CNC machine tool according to claim 7, characterized in that: The adjustment assembly (520) includes a drive shaft (521) disposed in the base (100) for driving two locking assemblies (530) to move in opposite directions. A bevel gear (522) for meshing with bevel gear (513) is fixedly mounted on the shaft of the drive shaft (521).

9. The error compensation device for a five-axis linkage CNC machine tool according to claim 8, characterized in that: The second locking assembly (530) includes a threaded sleeve plate (531) disposed in the base (100) for threaded connection with the drive shaft (521), and a second locking rod (532) for insertion into the second locking hole (304) is fixedly installed on the threaded sleeve plate (531).

10. The error compensation device for a five-axis linkage CNC machine tool according to claim 9, characterized in that: The connecting assembly (540) includes a rotating rod (541) disposed in the base (100) for rotation, and bevel gears (542) for meshing with bevel gears (522) are fixedly installed at the left and right ends of the rotating rod (541).

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