Measuring structure for error compensation of turning and milling numerical control machine tool

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a measuring structure for error compensation of a turn-milling numerical control machine tool, which is characterized in that a mounting groove is formed in a side connecting plate, a movable block is slidably connected to the inner wall of the mounting groove, a threaded groove is formed in one end of the movable block, and a threaded rod is in threaded connection to the inner wall of the threaded groove; the end, away from the threaded groove, of the threaded rod is fixedly connected with a control disc, the end, away from the threaded groove, of the movable block is fixedly connected with a fixed block, the lower hook plate is used for hooking the edge of the lower wall of the numerical control machine tool workbench, then the control disc is rotated, and the control disc is used for driving the threaded rod to rotate. The fixing operation is very convenient, and the problems that in order to guarantee the measurement stability, a base of an existing measurement structure is generally installed on a working table of a turning and milling numerical control machine tool in a bolt fixing mode, the operation is tedious, and the working efficiency is high are solved. And the practicability is insufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a measuring structure for error compensation of a turning and milling numerical control machine tool. Background Technique

[0002] The positioning accuracy and machining accuracy of a numerical control machine tool are important indicators for evaluating its performance. However, due to the influence of various factors, such as numerical control system errors, mechanical transmission errors, thermal deformation errors, etc., the machine tool often generates certain errors during the actual machining process. If these errors are not effectively compensated, it will directly affect the machining accuracy and surface quality of the workpiece. Use measuring tools or sensors to directly measure the motion errors of each axis of the machine tool. Before error compensation, a measuring structure is required to measure the positioning error and straightness error of the machine tool. Commonly used is a laser interferometer, which uses laser as the measuring light source and determines parameters such as the length and displacement of the measured object by measuring the position or change of interference fringes to achieve the purpose of measurement. However, in order to ensure the stability of measurement, the existing measuring structure generally installs the base on the workbench of the turning and milling numerical control machine tool by means of bolt fixation, which is rather cumbersome in operation and lacks practicality.

[0003] In view of the above problems, the utility model proposes a measuring structure for error compensation of a turning and milling numerical control machine tool. Content of the Utility Model

[0004] The purpose of the utility model is to provide a measuring structure for error compensation of a turning and milling numerical control machine tool, thus solving the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A measuring structure for error compensation of a turning and milling numerical control machine tool, including an upper mounting block arranged on the upper wall of the workbench of the numerical control machine tool. The upper end of the upper mounting block is rotatably connected with a laser interference measuring main body. The lower end of one side edge of the upper mounting block is fixedly connected with a side connecting plate. The lower end of the side connecting plate is fixedly connected with a lower hook plate for hooking the edge of the lower wall of the workbench of the numerical control machine tool. An installation groove is formed inside the side connecting plate. An active block is slidably connected to the inner wall of the installation groove. A threaded groove is formed at one end of the active block. A threaded rod is threadedly connected to the inner wall of the threaded groove. The end of the threaded rod far away from the threaded groove is fixedly connected with a control disk. The control disk is rotatably connected to the outer wall of the side connecting plate. The end of the active block far away from the threaded rod is fixedly connected with a fixed block.

[0006] Preferably, the threaded rod penetrates through the outer wall of the side connecting plate, and the threaded rod is rotatably connected with the side connecting plate.

[0007] Preferably, when the threaded rod contacts the inner bottom of the threaded groove, the fixed block is flush with the opening of the installation groove.

[0008] Preferably, the fixing block is a component made of rubber, and the inside of the fixing block is a hollow structure.

[0009] Preferably, an inner connecting shaft is fixedly connected to the inner wall of the fixing block, and an outer connecting shaft is rotatably connected to the inner wall of the fixing block. The inner connecting shaft is located inside the inner wall of the outer connecting shaft.

[0010] Preferably, a return torsion spring is sleeved on the outer wall of the inner connecting shaft, and two ends of the return torsion spring are respectively fixedly connected to a first pressing rod and a second pressing rod.

[0011] Preferably, the first pressing rod and the second pressing rod are both symmetrically distributed about the center of the fixing block, and the first pressing rod and the second pressing rod are both rotatably connected to the inner wall of the outer connecting shaft.

[0012] Preferably, both the first pressing rod and the second pressing rod are components made of rubber.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] A measuring structure for error compensation of a turning and milling numerical control machine tool proposed by the present utility model uses a lower hook plate to hook the edge of the lower wall of the workbench of the numerical control machine tool, and then rotates the control disk. By driving the threaded rod to rotate through the control disk and with the cooperation of the installation groove, the movable block can drive the fixing block to closely adhere to the side wall of the workbench of the numerical control machine tool. Since the fixing block is a component made of rubber and the inside of the fixing block is a hollow structure, it will be sunken inward against the outer wall of the workbench of the numerical control machine tool, and further closely adhere to the outer wall of the workbench of the numerical control machine tool through its own restorability. At this time, the fixing of the upper mounting block can be completed, enabling the laser interference measurement main body to work stably. The fixing operation is extremely convenient, solving the problem that in order to ensure the stability of measurement, the existing measuring structure generally installs the base on the workbench of the turning and milling numerical control machine tool by means of bolt fixation, with cumbersome operation and insufficient practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the laser interference measurement main body and the numerical control machine tool of the present utility model;

[0016] Figure 2 is an overall three-dimensional structural diagram of the present utility model;

[0017] Figure 3 is a schematic internal planar structure diagram of the side connection plate of the present utility model;

[0018] Figure 4 is a schematic internal structure diagram of the fixing block of the present utility model.

[0019] In the figure: 1. Workbench of CNC machine tool; 2. Upper mounting block; 3. Laser interferometry main body; 4. Side connection plate; 41. Lower hook plate; 5. Installation groove; 6. Movable block; 7. Thread groove; 8. Threaded rod; 9. Control panel; 10. Fixed block; 11. Inner connecting shaft; 12. Outer connecting shaft; 13. Reset torsion spring; 14. First pressing rod; 15. Second pressing rod. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , in order to solve the problem that in order to ensure the stability of the existing measurement structure, the base is generally installed on the workbench of the turning and milling CNC machine tool by means of bolt fixation, the operation is relatively cumbersome and the practicability is insufficient, the following preferred technical solutions are provided:

[0022] A measurement structure for error compensation of a turning and milling CNC machine tool, including an upper mounting block 2 arranged on the upper wall of the workbench 1 of the CNC machine tool. The upper end of the upper mounting block 2 is rotatably connected with a laser interferometry main body 3. The lower end of one side edge of the upper mounting block 2 is fixedly connected with a side connection plate 4. The lower end of the side connection plate 4 is fixedly connected with a lower hook plate 41 for hooking the edge of the lower wall of the workbench 1 of the CNC machine tool. An installation groove 5 is opened inside the side connection plate 4. The inner wall of the installation groove 5 is slidably connected with a movable block 6. One end of the movable block 6 is provided with a thread groove 7. The inner wall of the thread groove 7 is threadedly connected with a threaded rod 8. The end of the threaded rod 8 far from the thread groove 7 is fixedly connected with a control panel 9. The control panel 9 is rotatably connected with the outer wall of the side connection plate 4. The end of the movable block 6 far from the threaded rod 8 is fixedly connected with a fixed block 10. The threaded rod 8 penetrates through the outer wall of the side connection plate 4, and the threaded rod 8 is rotatably connected with the side connection plate 4. When the threaded rod 8 contacts the inner bottom of the thread groove 7, the fixed block 10 is flush with the opening of the installation groove 5. The fixed block 10 is a component made of rubber material, and the inside of the fixed block 10 is a hollow structure.

[0023] The inner wall of the fixed block 10 is fixedly connected with an inner connecting shaft 11, and the inner wall of the fixed block 10 is rotatably connected with an outer connecting shaft 12. The inner connecting shaft 11 is located inside the inner wall of the outer connecting shaft 12. A reset torsion spring 13 is sleeved on the outer wall of the inner connecting shaft 11. The two ends of the reset torsion spring 13 are respectively fixedly connected with a first pressing rod 14 and a second pressing rod 15. The first pressing rod 14 and the second pressing rod 15 are both symmetrically distributed about the center of the fixed block 10, and both the first pressing rod 14 and the second pressing rod 15 are rotatably connected with the inner wall of the outer connecting shaft 12. Both the first pressing rod 14 and the second pressing rod 15 are components made of rubber material.

[0024] Specifically, during measurement, the laser interferometry main body 3 can use laser as the measurement light source. By measuring the position or change of the interference fringes, parameters such as the length and displacement of the object to be measured can be determined, achieving the purpose of measurement. When installing the laser interferometry main body 3 before measurement, first use the lower hook plate 41 to hook the edge of the lower wall of the CNC machine tool workbench 1. Then rotate the control disk 9, which drives the threaded rod 8 to rotate. Through the cooperation of the installation slot 5, the movable block 6 can drive the fixed block 10 to closely adhere to the side wall of the CNC machine tool workbench 1. Since the fixed block 10 is made of rubber and has a hollow structure inside, it will be recessed inward against the outer wall of the CNC machine tool workbench 1. Due to its resilience, it will further closely adhere to the outer wall of the CNC machine tool workbench 1. At this time, the fixing of the upper mounting block 2 can be completed, enabling the laser interferometry main body 3 to work stably. The fixing operation is extremely convenient, solving the problem that in order to ensure the stability of measurement, the existing measurement structure generally installs the base on the workbench of the turning and milling CNC machine tool by means of bolt fixation, which is rather cumbersome and lacks practicality.

[0025] When the fixed block 10 is recessed inward against the outer wall of the CNC machine tool workbench 1, the first pressure rod 14 and the second pressure rod 15 will bend and rotate at an angle under the drive, and at this time, the return torsion spring 13 will be compressed. Therefore, by utilizing the characteristics of the rubber material and the reaction force of the return torsion spring 13, the resilience of the fixed block 10 will be improved, thereby further enhancing the fixing effect.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A measuring structure for error compensation of a turning and milling CNC machine tool, comprising an upper mounting block (2) arranged on the upper wall of a workbench (1) of the CNC machine tool, and a laser interferometry measuring body (3) rotatably connected to the upper end of the upper mounting block (2), characterized in that: A side edge lower end of the upper mounting block (2) is fixedly connected with a side connecting plate (4). A lower hook plate (41) is fixedly connected to a lower end of the side connecting plate (4) and is used for hooking an edge of a lower wall of a numerical control machine tool workbench (1). An installation groove (5) is formed in an interior of the side connecting plate (4). An inner wall of the installation groove (5) is slidably connected with a movable block (6). A threaded groove (7) is formed in one end of the movable block (6). An inner wall of the threaded groove (7) is threadedly connected with a threaded rod (8). One end of the threaded rod (8) far away from the threaded groove (7) is fixedly connected with a control disk (9). The control disk (9) is rotatably connected with an outer wall of the side connecting plate (4). One end of the movable block (6) far away from the threaded rod (8) is fixedly connected with a fixing block (10).

2. The measurement structure for error compensation of a turning and milling CNC machine tool according to claim 1, characterized in that: The threaded rod (8) penetrates through an outer wall of the side connecting plate (4), and the threaded rod (8) is rotatably connected with the side connecting plate (4).

3. The measuring structure for error compensation of a turning and milling CNC machine tool according to claim 1, characterized in that: When the threaded rod (8) contacts a bottom of the threaded groove (7), the fixing block (10) is flush with an opening of the installation groove (5).

4. The measuring structure for error compensation of a turning and milling CNC machine tool according to claim 1, characterized in that: The fixing block (10) is a component made of rubber material, and an interior of the fixing block (10) is a hollow structure.

5. The measuring structure for error compensation of a turning and milling CNC machine tool according to claim 1, characterized in that: An inner connecting shaft (11) is fixedly connected to an inner wall of the fixing block (10), and an outer connecting shaft (12) is rotatably connected to the inner wall of the fixing block (10). The inner connecting shaft (11) is located inside the inner wall of the outer connecting shaft (12).

6. The measuring structure for error compensation of a turning and milling CNC machine tool according to claim 5, characterized in that: A reset torsion spring (13) is sleeved on an outer wall of the inner connecting shaft (11). Two ends of the reset torsion spring (13) are respectively fixedly connected with a first pressing rod (14) and a second pressing rod (15).

7. A measuring structure for error compensation of a turning and milling CNC machine tool according to claim 6, characterized in that: The first pressing rod (14) and the second pressing rod (15) are both symmetrically distributed about a center of the fixing block (10), and the first pressing rod (14) and the second pressing rod (15) are both rotatably connected with an inner wall of the outer connecting shaft (12).

8. A measuring structure for error compensation of a turning and milling CNC machine tool according to claim 7, characterized in that: The first pressing rod (14) and the second pressing rod (15) are both components made of rubber material.

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