A correction device for a numerically controlled machine tool

Abstract

The utility model discloses a correcting device for numerical control machine tool, including, base, and base is fixedly connected to numerical control machine tool workpiece processing seat top through bolt, steering mechanism, steering mechanism sets up in the top of base, is used for adjusting the direction of correction tool, and steering mechanism includes sleeve, and sleeve fixedly connected in the top of base, and the universal ball head is rotatably connected in the sleeve, and the top fixedly connected with the installing rod of universal ball head, adjusting lever, adjusting lever fixedly connected with the side of installing rod away from universal ball head, mounting seat, mounting seat fixedly connected with the side of adjusting lever away from installing rod, is used for the installation of correction tool, through the fixation of base and numerical control machine tool processing seat, the clamping positioning of correction tool in mounting seat and the locking limit of universal ball head through the locking bolt of limit bolt, replaces traditional manual holding mode, effectively avoids the unstable problem of measurement datum caused by hand shaking, force fluctuation and other factors, ensures the consistency of tool posture in the correction process.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool calibration technology, and in particular to a calibration device for CNC machine tools. Background Technology

[0002] In CNC machine tool machining, precise workpiece positioning is crucial for ensuring machining accuracy. The roundness error and radial runout error of the workpiece on the fixture directly affect the final machining quality. In CNC machine tool workpiece calibration, operators typically use handheld calibration tools (such as dial indicators) to slowly rotate the workpiece using the fixture for monitoring. However, handheld operation has significant drawbacks: manual operation lacks stability and is easily affected by hand tremors and uneven force application, resulting in large deviations in measurement data. This makes it difficult to accurately capture workpiece errors and fails to meet the high-efficiency and precise machining requirements of modern CNC machine tools. Utility Model Content

[0003] This application provides a calibration device for CNC machine tools. By fixing the base to the CNC machine tool machining seat, clamping and positioning the calibration tool in the mounting seat, and locking and limiting the universal ball head through the limit bolt, it replaces the traditional manual hand-held method, effectively avoiding the problem of unstable measurement reference caused by factors such as hand tremors and force fluctuations, and ensuring the consistency of tool posture during the calibration process.

[0004] This application provides a calibration device for CNC machine tools, comprising,

[0005] The base is fixedly connected to the top of the CNC machine tool workpiece machining seat by bolts.

[0006] A steering mechanism is located on the top of the base and is used to adjust the direction of the calibration tool. The steering mechanism includes a sleeve, which is fixedly connected to the top of the base. A universal ball joint is rotatably connected inside the sleeve, and a mounting rod is fixedly connected to the top of the universal ball joint.

[0007] The adjusting rod is fixedly connected to the side of the mounting rod away from the universal ball head. The adjusting rod includes a sleeve and a connecting rod. The sleeve is fixedly connected to the top of the mounting rod, and the inner wall of the sleeve is pre-threaded. The connecting rod is a threaded rod and is rotatably connected to the inside of the sleeve.

[0008] The mounting base is fixedly connected to the side of the adjusting rod away from the mounting rod and is used to install the calibration tool. The mounting base and the adjusting rod are also equipped with a steering mechanism, which can effectively adjust the angle of the mounting base.

[0009] Furthermore, a rubber pad is glued and fixed to the inner wall of the sleeve, and a limit bolt is rotatably connected to the side wall of the sleeve to realize the position limit of the universal ball head.

[0010] A mounting groove is further provided on the side of the mounting base away from the connecting base. The mounting groove is designed as a through arc-shaped groove, and a rubber pad is glued and fixed to the inner wall of the mounting groove.

[0011] The mounting base is further provided with symmetrical fixing components on the front and rear sides. The fixing components include fixing rods, which are threaded rods. Threaded through holes are opened on the front and rear sides of the mounting base. The fixing rods are rotatably connected to the threaded through holes on the mounting base. A fixing plate is fixedly connected to one side of the fixing rod. The fixing plate is located in the mounting groove. A rubber sleeve is wrapped around the outside of the fixing plate. The side of the fixing rod away from the fixing plate passes through the mounting base and extends to its outside. A knob is fixedly connected to the side of the fixing rod that passes through.

[0012] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages: By fixing the base to the CNC machine tool machining seat, clamping and positioning the calibration tool in the mounting seat, and locking and limiting the universal ball head through the limit bolt, the traditional manual hand-held method is replaced, effectively avoiding the problem of unstable measurement reference caused by factors such as hand tremors and force fluctuations, and ensuring the consistency of tool posture during calibration. At the same time, the fine adjustment of the length of the adjusting rod, combined with the multi-angle adjustment capability of the universal ball head and the mounting seat steering mechanism, can achieve precise alignment between the calibration tool probe and the part to be inspected on the workpiece, accurately capturing subtle deviations such as workpiece roundness error and radial runout, and solving the problem of measurement data deviation caused by inaccurate alignment in traditional hand-held operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the workpiece correction in this application;

[0014] Figure 2 This is a schematic diagram of the installation structure of the correction device in this application;

[0015] Figure 3 Top view of the installation of the correction device in this application;

[0016] Figure 4 This is a schematic diagram of the reset state of the calibration device in this application;

[0017] Figure 5 This is a schematic diagram of the calibration device used in this application;

[0018] Figure 6 This is a top view of the correction device of this application.

[0019] In the diagram: 10 CNC machine tool workpiece processing seat, 11 workpiece, 12 calibration tool, 20 base, 30 sleeve, 31 universal ball joint, 32 mounting rod, 33 limit bolt, 40 sleeve, 41 connecting rod, 50 mounting seat, 51 fixing rod, 52 fixing plate. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1

[0024] Please see Figure 1-6 A correction device for a CNC machine tool includes a base 20 and a steering mechanism fixedly connected to the top of the base 20.

[0025] Specifically, the base 20 is fixedly connected to the top of the CNC machine tool workpiece processing seat 10 by bolts. The steering mechanism is set on the top of the base 20 and is used to adjust the direction of the correction tool 12 to avoid damage to the correction tool 12 during the processing of the workpiece 11. The steering mechanism includes a sleeve 30, which is fixedly connected to the top of the base 20. A universal ball joint 31 is rotatably connected inside the sleeve 30. A mounting rod 32 is fixedly connected to the top of the universal ball joint 31. An adjusting rod is fixedly connected to the top of the mounting rod 32. A mounting seat 50 is provided on the side of the adjusting rod away from the mounting rod 32 for mounting the correction tool 12.

[0026] A rubber pad is glued to the inner wall of the sleeve 30, which increases the friction between the inner wall of the sleeve 30 and the universal ball head 31. When the universal ball head 31 rotates, it can be rotated slowly with slight manual force, which improves the reliability of the universal ball head 31 position fixation when limiting the universal ball head 31 in the later stage.

[0027] A limiting bolt 33 is rotatably connected to the side wall of the sleeve 30. The position of the universal ball head 31 can be limited by screwing the limiting bolt 33 into the sleeve 30.

[0028] The adjusting rod includes a sleeve 40 and a connecting rod 41. The sleeve 40 is fixedly connected to the top of the mounting rod 32. The inner wall of the sleeve 40 is pre-threaded. The connecting rod 41 is a threaded rod and is rotatably connected to the sleeve 40. The distance of the mounting seat 50 is adjusted by turning the connecting rod 41. With the help of the universal ball head 31, the vertical position of the adjusting rod on the side away from the mounting rod 32 can be adjusted, so that the correction tool 12 can move closer to the workpiece to be processed.

[0029] A steering mechanism is also installed between the mounting base 50 and the adjusting rod. Since the connecting rod 41 will rotate, it will inevitably drive the mounting base 50 to rotate. In order to keep the mounting base 50 in a vertical position, the angle of the mounting base 50 can be effectively adjusted by the steering mechanism so that it is not affected by the connecting rod 41, so as to facilitate the use of the calibration tool later.

[0030] A mounting groove is provided on the side of the mounting base 50 away from the connecting rod 41. The mounting groove is set as a through arc groove for mounting the calibration tool 12. A rubber pad is glued and fixed to the inner wall of the mounting groove, which can increase the friction between the mounting groove and the calibration tool 12 and reduce the wear of the outer shell of the calibration tool 12.

[0031] The mounting base 50 is symmetrically provided with fixing components on the front and rear sides for fixing the calibration tool 12 on the mounting base 50. The fixing components include fixing rods 51, which are threaded rods. Threaded through holes are opened on the front and rear sides of the mounting base 50. The fixing rods 51 are rotatably connected to the threaded through holes on the mounting base 50. A fixing plate 52 is fixedly connected to one side of the fixing rod 51. The fixing plate 52 is located in the mounting groove. The side of the fixing rod 51 away from the fixing plate 52 passes through the mounting base 50 and extends to its outer side. A knob is fixedly connected to the side of the fixing rod 51 that passes through.

[0032] The outer side of the fixing plate 52 is wrapped with a rubber sleeve, which can increase the friction between the fixing plate 52 and the calibration tool 12, and also reduce the wear of the outer shell of the calibration tool 12.

[0033] The calibration tool 12 uses a lever dial indicator to detect the roundness error or radial runout error of the workpiece clamped on the fixture, which enables more accurate positioning of the workpiece.

[0034] The entire calibration device can be made of rust-proof and corrosion-resistant materials; lubricant can be added to the universal ball joint and threaded connection weekly; check the wear of the rubber pads monthly, and replace them in time if cracks or hardening occur; when not in use for a long time, reset the device to the state shown in Figure 4 to avoid deformation of the parts due to stress.

[0035] In actual operation of the embodiments of this application,

[0036] The base 20 is fixedly connected to the top of the CNC machine tool workpiece machining seat 10 by bolts to ensure that the whole device is stably connected to the machine tool machining seat;

[0037] The lever dial indicator is used as a calibration tool. It is placed in the mounting groove on the side of the mounting base 50 away from the connecting rod 41 (the mounting groove is a through arc groove that fits the shape of most calibration tools). Then, the knob is turned to drive the fixing rod 51 into the threaded through hole of the mounting base 50, so that the fixing plate 52 gradually approaches the lever dial indicator and clamps it in place. The rubber sleeve on the outside of the fixing plate 52 further enhances the fixing effect and protects the tool shell.

[0038] Tighten the connecting rod 41 (rotating within the sleeve 40) to change the distance between the mounting base 50 and the mounting rod 32 using the threaded connection, allowing the lever dial indicator to gradually approach the workpiece 11 to be processed. If the rotation of the connecting rod 41 causes the mounting base 50 to tilt, the angle of the mounting base 50 can be adjusted through the steering mechanism between the mounting base 50 and the adjusting rod (same as the steering mechanism structure at the top of the base 20) to keep it vertical and ensure the accurate measurement direction of the lever dial indicator. At the same time, finely adjust the angle of the universal ball head 31 again, and adjust the length of the adjusting rod to ensure that the probe of the lever dial indicator accurately contacts the position to be tested on the workpiece 11 (such as the outer circular surface of the clamping part of the workpiece 11). After the lever dial indicator is in position, tighten the limiting bolt 33 on the side wall of the sleeve 30 to screw it into the sleeve 30 and abut against the universal ball head 31 to prevent it from shifting position due to machine tool vibration or external force during the calibration process, thus ensuring measurement stability.

[0039] Start the CNC machine tool and slowly rotate the workpiece 11 with the machining seat. The probe of the lever dial indicator will deviate due to the roundness error or radial runout of the workpiece surface. The clamping accuracy of the workpiece can be directly reflected by the dial reading. After the calibration is completed, loosen the limit bolt 32 and adjust the universal ball head 31 to rotate the mounting seat 50, adjusting rod and other components back to the initial avoidance position to avoid damage to the device due to collision when the machine tool is not working (the lever dial indicator can be removed or not, which can avoid repeated installation and removal).

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, various modifications and variations are possible with this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A calibration device for CNC machine tools, characterized in that: include, The base is fixedly connected to the top of the CNC machine tool workpiece machining seat by bolts. A steering mechanism is located on the top of the base and is used to adjust the direction of the calibration tool. The steering mechanism includes a sleeve, which is fixedly connected to the top of the base. A universal ball joint is rotatably connected inside the sleeve, and a mounting rod is fixedly connected to the top of the universal ball joint. Adjusting rod, the adjusting rod is fixedly connected to the side of the mounting rod away from the universal ball head; Mounting bracket, which is fixedly connected to the side of the adjusting rod away from the mounting rod, is used for mounting the calibration tool.

2. The calibration device for CNC machine tools as described in claim 1, characterized in that: A rubber pad is glued and fixed to the inner wall of the sleeve, and a limit bolt is rotatably connected to the side wall of the sleeve to realize the position limit of the universal ball head.

3. The calibration device for CNC machine tools as described in claim 1, characterized in that: The adjusting rod includes a sleeve and a connecting rod. The sleeve is fixedly connected to the top of the mounting rod, and the inner wall of the sleeve is pre-threaded. The connecting rod is a threaded rod and is rotatably connected inside the sleeve.

4. The calibration device for CNC machine tools as described in claim 1, characterized in that: A steering mechanism is also installed between the mounting base and the adjusting rod, which can effectively adjust the angle of the mounting base.

5. A calibration device for CNC machine tools as described in claim 4, characterized in that: The mounting base has a mounting groove on the side away from the connecting base. The mounting groove is a through arc-shaped groove, and a rubber pad is glued and fixed to the inner wall of the mounting groove.

6. A calibration device for CNC machine tools as described in claim 4, characterized in that: The mounting base is symmetrically provided with fixing components on the front and rear sides. The fixing components include fixing rods, which are threaded rods. Threaded through holes are opened on the front and rear sides of the mounting base. The fixing rods are rotatably connected to the threaded through holes on the mounting base. A fixing plate is fixedly connected to one side of the fixing rod. The fixing plate is located in the mounting groove. The side of the fixing rod away from the fixing plate passes through the mounting base and extends to its outer side. A knob is fixedly connected to the side of the fixing rod that passes through.

7. A calibration device for CNC machine tools as described in claim 6, characterized in that: The outer side of the fixing plate is wrapped with a rubber sleeve.

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