Equipment and methods for correcting wear on surface grinding wheels

Abstract

This invention relates to a surface grinding wheel wear correction device and method, comprising a platform, a vertically movable grinding wheel mounted on top of the platform, and a laser rangefinder mounted on one side of the grinding wheel, moving synchronously with the grinding wheel. The distance between the measuring head of the laser rangefinder and the axis of the grinding wheel remains constant. The method includes the following steps: S1, fixing the workpiece to be ground on the platform; S2, adjusting the positions of the platform and the grinding wheel, positioning the workpiece directly below the grinding wheel; S3, activating the laser rangefinder and adjusting the relative position between the laser rangefinder and the grinding wheel; S4, activating the grinding wheel and controlling its downward pressure to grind the workpiece; S5, the laser rangefinder detects the grinding wheel wear, and the grinding wheel corrects its position in real time based on the wear. This invention features reduced detection errors in grinding wheel wear and ensures accurate correction of the grinding wheel.

Description

Technical Field

[0001] This invention relates to a surface grinding wheel wear correction device and correction method, belonging to the technical field of surface grinding. Background Technology

[0002] Existing surface grinders use the end face of a high-speed rotating grinding wheel to press and grind the surface of the workpiece to make it flat. The end face of the grinding wheel in the grinding device will wear out during the grinding process. In the existing technology, the worn grinding wheel is usually moved during the grinding process so that the grinding wheel can continue to grind the workpiece.

[0003] Chinese patent application CN1850449A discloses an automatic grinding compensation device for a vertical axis double-end face CNC surface grinder, including a grinding head motor, a grinding head outer sleeve, a grinding head outer sleeve base, a grinding head inner sleeve, a spline spindle, a spline sleeve, a grinding wheel base, a grinding wheel cover, and a grinding wheel. A compensation screw is installed inside the grinding head outer sleeve base, and a lifting nut is fitted on the compensation screw. The lifting nut is connected to the grinding head inner sleeve through a nut base. The compensation screw is also connected in sequence to a gearbox and a servo motor. A compensation switch is installed on the worktable and the side of the feeding turntable of the surface grinder.

[0004] The aforementioned automatic grinding compensation device adjusts the position of the grinding wheel through the control of a servo motor and a gearbox to compensate for the wear of the grinding wheel and correct its position. However, the wear of the grinding wheel and the value that needs to be corrected still require time to detect. Manual detection is prone to errors and there is also a compensation time difference, making it impossible to compensate and correct the position of the grinding wheel in real time, which affects the correction accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a surface grinding wheel wear correction device and correction method, which solves the problems of easy error generation and inability to compensate and correct the position of the grinding wheel in real time in the existing technology.

[0006] The above-mentioned technical objective of this invention is mainly achieved through the following technical solution: a surface grinding wheel wear correction device, comprising a platform, a grinding wheel that can move up and down is provided above the platform, and a laser rangefinder that moves synchronously with the grinding wheel is provided on one side of the grinding wheel. The distance between the measuring head of the laser rangefinder and the axis of the grinding wheel remains unchanged. The synchronous movement of the laser rangefinder with the grinding wheel allows the laser rangefinder to maintain its relative position with the grinding wheel, so as to maintain accurate detection of the grinding wheel wear during the grinding wheel position correction process, achieving a real-time detection effect. This allows the grinding wheel to correct its position in real time according to the wear during the grinding process, while the distance between the measuring head of the laser rangefinder and the axis of the grinding wheel remains unchanged, so as to keep the distance between the measuring head of the laser rangefinder and the axis of the grinding wheel consistent, thereby ensuring the detection accuracy of the laser rangefinder under continuous grinding wheel wear.

[0007] Preferably, the measuring head of the laser rangefinder is oriented in the same direction as the radius of the grinding wheel. This orientation allows the laser to directly strike the sidewall and axis of the grinding wheel, enabling more direct detection of grinding wheel wear. This reduces the steps of data conversion and calculation, making the detection of grinding wheel wear more efficient.

[0008] Preferably, the grinding wheel is mounted on a transverse movement mechanism, which is located at the output end of a longitudinal movement mechanism and can move up and down via the drive of the longitudinal movement mechanism. The grinding wheel can also move up and down via the drive of the longitudinal movement mechanism. The laser rangefinder is located at the output end of the longitudinal movement mechanism. The grinding wheel can move laterally via the transverse movement mechanism to adjust its position according to the workpiece to be ground. When the wear level is detected by the laser rangefinder and the position is corrected by the longitudinal movement mechanism, the laser rangefinder can move synchronously with the grinding wheel to ensure detection accuracy.

[0009] Preferably, the longitudinal movement mechanism includes a fixed bracket and a motor mounted on top of the fixed bracket. A linear guide rail is provided on the side wall of the fixed bracket, and a slider is provided on the linear guide rail. A movable plate connected to the transverse movement mechanism is provided on the slider, and the movable plate is connected to the motor through a screw structure. The motor can move up and down on the fixed bracket by controlling the movable plate through the screw structure, thereby driving the grinding wheel to move up and down through the transverse movement mechanism. This allows the grinding wheel to be moved up and down at any time to correct its position according to the wear of the grinding wheel.

[0010] Preferably, a connecting plate is provided on one side of the movable plate, and a lifting cylinder is provided on the connecting plate. The laser rangefinder is located on the output end of the lifting cylinder. The lifting cylinder allows the laser rangefinder to finely adjust its position so that the measuring head of the laser rangefinder is aligned with the radius of the grinding wheel, thereby ensuring measurement accuracy.

[0011] Preferably, the platform is provided with a magnetic suction table for adsorbing and fixing the workpiece to be ground; the magnetic suction table can place the workpiece to be ground and fix it in place.

[0012] Preferably, the platform is mounted on a base and can reciprocate along the length of the base. This allows the platform to adjust the position of the workpiece by moving, ensuring that the workpiece is positioned directly below the grinding wheel for grinding.

[0013] As a preferred embodiment, the correction method of the surface grinding wheel wear correction device includes the following steps:

[0014] S1. Fix the workpiece to be ground on the platform;

[0015] S2. Adjust the position of the platform and grinding wheel, and position the workpiece to be ground directly below the grinding wheel;

[0016] S3. Start the laser rangefinder and adjust the relative position between the laser rangefinder and the grinding wheel;

[0017] S4. Start the grinding wheel and control the grinding wheel to press down to grind the workpiece to be ground;

[0018] S5. The laser rangefinder detects the wear of the grinding wheel, and the grinding wheel corrects its position in real time according to the wear.

[0019] The above-mentioned correction method allows the wear of the grinding wheel to be detected in real time by a laser rangefinder, and the position of the grinding wheel can be corrected in real time according to the wear of the grinding wheel, so as to maintain the grinding state of the grinding wheel on the workpiece to be ground, thereby reducing the detection error of grinding wheel wear and ensuring correction accuracy.

[0020] Therefore, the present invention has the characteristics of reducing the detection error of grinding wheel wear and ensuring the accuracy of grinding wheel correction. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the diagram. Detailed Implementation

[0023] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0024] like Figure 1-2 As shown, a surface grinding wheel wear correction device includes a platform 1. A grinding wheel 2 that can move up and down is provided above the platform 1. A laser rangefinder 3 that moves synchronously with the grinding wheel 2 is provided on one side of the grinding wheel 2. The distance between the measuring head of the laser rangefinder 3 and the axis of the grinding wheel 2 remains unchanged. The measuring head of the laser rangefinder 3 is oriented in the same direction as the radius of the grinding wheel 2. A connecting plate 31 is provided on one side of the movable plate 225. A lifting cylinder 32 is provided on the connecting plate 31. The laser rangefinder 3 is located on the output end of the lifting cylinder 32. A magnetic suction table 11 for adsorbing and fixing the workpiece to be ground is provided on the platform 1. The platform 1 is located on the base 12 and can move back and forth on the base 12 along the length of the base 12.

[0025] The aforementioned laser rangefinder and lifting cylinder are products already available on the market and are existing technologies, so they will not be described in detail here. The aforementioned magnetic suction table is a platform composed of an electromagnet structure, which can attract the workpiece to be ground, thereby fixing the workpiece to be ground. The workpiece to be ground can be placed on the magnetic suction table and fixed by a robotic arm. After adjusting the position of the workpiece to be ground so that it is located directly under the grinding wheel, the subsequent workpiece placement can be positioned directly and accurately placed under the grinding wheel without multiple adjustments.

[0026] After the laser from the laser rangefinder is emitted, it can extend in a straight line to the axis of the grinding wheel. When the grinding wheel is grinding the workpiece, the laser emitted by the laser rangefinder hits the side wall of the grinding wheel directly and returns to the laser rangefinder. When the grinding wheel wears down, the laser length of the laser rangefinder increases. At this time, the laser rangefinder can convert the laser length change data into the downward movement data of the grinding wheel, and control the grinding wheel to always be in contact with the workpiece in real time to grind the workpiece. Thus, the relative position of the grinding wheel and the workpiece can be corrected in real time according to the amount of grinding wheel wear.

[0027] like Figure 1 As shown, the grinding wheel 2 is mounted on the transverse movement mechanism 21, which is located at the output end of the longitudinal movement mechanism 22 and can move up and down under the drive of the longitudinal movement mechanism. The grinding wheel 2 can move up and down under the drive of the longitudinal movement mechanism 22. The laser rangefinder 3 is mounted on the output end of the longitudinal movement mechanism 22. The longitudinal movement mechanism includes a fixed bracket 221 and a motor 222 located on the top of the fixed bracket 221. A linear guide rail 223 is provided on the side wall of the fixed bracket 221, and a slider 224 is provided on the linear guide rail 223. A movable plate 225 connected to the transverse movement mechanism 21 is provided on the slider 224. The movable plate 225 is connected to the motor 222 through a lead screw structure. The transverse movement mechanism can adopt a motor and lead screw structure or a rodless cylinder structure to control the grinding wheel to move along the axial direction. The longitudinal movement mechanism is driven by the motor to make the lead screw rotate. The movable plate drives the transverse movement mechanism to move up and down synchronously through the lead screw. The grinding wheel moves along the axial direction through the transverse movement mechanism. The longitudinal movement mechanism controls the longitudinal movement of the grinding wheel and the laser rangefinder.

[0028] like Figure 1-2 As shown, the correction method for the wear correction device of the surface grinding wheel includes the following steps:

[0029] S1. Fix the workpiece to be ground on the platform;

[0030] S2. Adjust the position of the platform and grinding wheel, and position the workpiece to be ground directly below the grinding wheel;

[0031] S3. Start the laser rangefinder and adjust the relative position between the laser rangefinder and the grinding wheel;

[0032] S4. Start the grinding wheel and control the grinding wheel to press down to grind the workpiece to be ground;

[0033] S5. The laser rangefinder detects the wear of the grinding wheel, and the grinding wheel corrects its position in real time based on the wear.

[0034] The workpiece to be ground is placed on the magnetic suction table and fixed by the magnetic suction table. The workpiece is located below the grinding wheel. The position of the magnetic suction table and the grinding wheel is adjusted so that the workpiece is directly below the grinding wheel. Then, the relative position between the laser rangefinder and the grinding wheel is adjusted, and the laser rangefinder is started. Next, the grinding wheel is started and controlled to move downward, pressing down on the workpiece to be ground for grinding. The laser rangefinder detects the wear of the grinding wheel in real time, so as to transmit signals at any time and control the longitudinal movement mechanism to automatically drive the grinding wheel to move in real time, correct the position of the grinding wheel, and keep the grinding wheel in the grinding state of the workpiece at all times.

Claims

1. A correction method for a surface grinding wheel wear correction device, characterized in that: The surface grinding wheel wear correction device includes a platform (1), a grinding wheel (2) that can move up and down is provided above the platform (1), a laser rangefinder (3) that moves synchronously with the grinding wheel (2) is provided on one side of the grinding wheel (2), the distance between the measuring head of the laser rangefinder (3) and the axis of the grinding wheel (2) remains unchanged; the measuring head of the laser rangefinder (3) is oriented in the same direction as the radius of the grinding wheel (2); The grinding wheel (2) is mounted on the transverse movement mechanism (21), the transverse movement mechanism (21) is mounted on the output end of the longitudinal movement mechanism (22) and can move up and down by the drive of the longitudinal movement mechanism, the grinding wheel (2) can move up and down by the drive of the longitudinal movement mechanism (22), and the laser rangefinder (3) is mounted on the output end of the longitudinal movement mechanism (22). The longitudinal movement mechanism includes a fixed bracket (221) and a motor (222) mounted on the top of the fixed bracket (221). A linear guide rail (223) is provided on the side wall of the fixed bracket (221). A slider (224) is provided on the linear guide rail (223). A movable plate (225) connected to the transverse movement structure (21) is provided on the slider (224). The movable plate (225) is connected to the motor (222) via a screw structure. A connecting plate (31) is provided on one side of the movable plate (225). A lifting cylinder (32) is provided on the connecting plate (31). The laser rangefinder (3) is located on the output end of the lifting cylinder (32). The method includes the following steps: S1. Fix the workpiece to be ground on the platform; S2. Adjust the position of the platform and grinding wheel, and position the workpiece to be ground directly below the grinding wheel; S3. Start the laser rangefinder and adjust the relative position between the laser rangefinder and the grinding wheel; S4. Start the grinding wheel and control the grinding wheel to press down to grind the workpiece to be ground; S5. The laser rangefinder detects the wear of the grinding wheel, and the grinding wheel corrects its position in real time based on the wear.

2. The correction method according to claim 1, characterized in that: The platform (1) is provided with a magnetic suction table (11) for adsorbing and fixing the workpiece to be ground.

3. The correction method according to claim 1, characterized in that: The platform (1) is mounted on the base (12), and the platform (1) can move back and forth on the base (12) along the length of the base (12).

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