Portable grinding wheel dressing process for bearing steel ball lapping

Abstract

The invention discloses a portable grinding wheel dressing process for bearing steel ball lapping. The portable grinding wheel dressing process comprises the steps that firstly, a tool is installed; step 2, precise positioning; 3, finishing preparation is conducted; 4, grinding wheel dressing; 5, finishing and monitoring; 6, finishing is completed; 7, recording data; according to the technology, through the design of the portable dressing tool, the online dressing function is achieved, dressing can be completed without disassembling the grinding wheel ball grinding plate, the downtime caused by disassembling, carrying and external dressing of a lapping device is avoided, the equipment operation efficiency is improved by about 20%-30%, meanwhile, through the design of multiple sets of coaxial sliding sleeves of the dressing block and the grinding wheel, the dressing effect is good, and the dressing effect is good. The finishing process is more accurate, the finishing stroke and angle can be adjusted according to the abrasion state of the grinding wheel, the flatness of the grinding wheel is ensured, and therefore the precision difference between product batches is reduced, and the machining consistency is improved.

Description

Technical Field

[0001] The invention relates to a portable grinding wheel dressing process for fine grinding of bearing steel balls, belonging to the technical field of grinding wheel dressing. Background Art

[0002] In the traditional steel ball lapping process, two resin grinding wheel grinding ball plates are often used for lapping. During the service life of the grinding wheel plate, the surface accuracy of the grinding wheel will decrease due to material wear, and the grinding wheel needs to be disassembled regularly for turning and dressing. However, this method has the following defects: 1. High labor intensity: Frequent disassembly and transportation of grinding wheels requires high physical strength of workers; 2. Low production efficiency: During the disassembly and repair period, the grinding equipment cannot be operated and is left idle; 3. Poor processing consistency: There are batch differences between the grinding wheel after dressing and before dressing, which affects the product accuracy. Summary of the invention

[0003] The purpose of the present invention is to provide a portable grinding wheel dressing process for lapping bearing steel balls to solve the problems of high labor intensity, low production efficiency, poor processing consistency, etc. existing in traditional dressing methods.

[0004] To achieve the above object, the present invention provides the following technical solution: a portable grinding wheel dressing process for lapping a bearing steel ball, the portable grinding wheel dressing process for lapping a wind power large ball comprising the following steps: Step 1: Tool installation: Fix the portable dressing tool to the working position of the grinding wheel through the quick buckle structure; Step 2: Precision positioning: Use the positioning module to make the dressing block fit the grinding wheel surface precisely; Step 3: Dressing preparation: Apply diamond powder on the surface of the dressing block as a dressing medium; Step 4: Grinding wheel dressing: The dressing block is driven to reciprocate by the eccentric wheel, and the dressing angle is adjusted by the coaxial sleeve; Step 5: Trimming monitoring: Real-time monitoring of trimming accuracy through sensors; Step 6: Dressing is completed: clean the grinding wheel surface and remove the tooling; Step 7: Data recording: record the dressing parameters and the accuracy data of the grinding wheel after dressing.

[0005] As a preferred technical solution of the present invention, the contact surface of the trimming block adopts a nano-scale diamond coating with a coating thickness of 0.2-0.5 mm.

[0006] As a preferred technical solution of the present invention, the diameter of the eccentric wheel is 30-50 mm, and the stroke range of the trimming block is 10-25 mm.

[0007] As a preferred technical solution of the present invention, the positioning module adopts a laser positioning system with a positioning accuracy of 0.01 mm.

[0008] As a preferred technical solution of the present invention, the pressure between the grinding wheel and the dressing block during the dressing process ranges from 5 to 15 Newtons.

[0009] As a preferred technical solution of the present invention, the weight of the finishing tool is 2.5-4 kilograms.

[0010] As a preferred technical solution of the present invention, the power of the trimming motor is 100-300 watts, and the speed range is 500-1500 rpm.

[0011] As a preferred technical solution of the present invention, the surface roughness Ra value of the grinding wheel after the dressing is completed is 0.1-0.3 microns.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the process realizes the online dressing function through the design of portable dressing tooling, and the dressing can be completed without disassembling the grinding wheel and grinding ball plate, avoiding the downtime of the fine grinding device caused by disassembly, transportation and external dressing. At the same time, through the design of multiple sets of coaxial sleeves between the dressing block and the grinding wheel, the dressing process is more accurate, and the dressing stroke and angle can be adjusted according to the wear state of the grinding wheel to ensure the flatness of the grinding wheel, thereby reducing the accuracy difference between product batches and improving the processing consistency. In addition, on-site dressing is realized through the portable design, without the need for transportation and multiple assembly, the operation is simple and direct, and the labor intensity is reduced by more than 40%. At the same time, the error accumulation caused by complex operation links is reduced, and the original coaxiality of the dressing wheel and the equipment is maintained, further ensuring the consistency of processing accuracy and product quality. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The present invention provides a portable grinding wheel dressing process for lapping a bearing steel ball, the process comprising the following steps: Step 1: Tooling installation: Fix the portable dressing tool to the working position of the grinding wheel of the lapping machine through the quick buckle structure to ensure that the dressing block is in contact with the surface of the grinding wheel; Adjust the initial position and angle of the trimming block to align it with the center of the lapping groove; Step 2: Precision positioning: Start the automatic positioning module in the tooling to make the dressing block fit precisely with the grinding groove of the grinding wheel; Adjust the pressure between the dressing block and the grinding wheel surface by adjusting the spiral adjuster to ensure that the dressing block can run stably on the grinding wheel surface; Step 3: Preparation: Apply diamond powder on the dressing block as a dressing medium; Check the eccentric wheel and guide rail assembly of the tooling to ensure that the movement trajectory during dressing is smooth and correct; Step 4: Grinding wheel dressing: Start the dressing motor, and drive the dressing block to reciprocate on the surface of the lapping groove through the eccentric wheel; Adjust the stroke and angle of the dressing block so that it covers the entire working surface of the grinding wheel; Use multiple sets of coaxial sleeves to synchronously dress different areas of the grinding wheel to ensure the flatness of the grinding wheel; Step 5: Repair monitoring: Start the monitoring sensor module to obtain the dressing condition data of the grinding wheel surface in real time; Adjust dressing parameters according to feedback data to ensure that the surface accuracy of the grinding wheel meets the process requirements; Step 6: Finishing: Stop the dressing motor and move the dressing block away from the grinding wheel surface; Use compressed air to clean the grinding wheel surface and remove residual dressing media; Step 7: Device recovery: Unfasten the tooling and remove the trimming device; Start the lapping equipment for trial operation to verify the processing performance of the grinding wheel after dressing; Step 8: Data Recording: Record all parameters during the dressing process and the accuracy data of the grinding wheel after dressing; Input the data into the intelligent management system to provide reference for subsequent adjustments.

[0015] Among them, the contact surface of the dressing block is coated with nano-scale diamond coating with a coating thickness of 0.2-0.5 mm; the diameter of the eccentric wheel is 30-50 mm, and the stroke range of the dressing block is 10-25 mm; the positioning module adopts a laser positioning system with a positioning accuracy of 0.01 mm; the pressure range between the grinding wheel and the dressing block during the dressing process is 5-15 Newtons; the weight of the dressing tooling is 2.5-4 kg; the power of the dressing motor is 100-300 watts, and the speed range is 500-1500 rpm; after dressing, the surface roughness Ra value of the grinding wheel is 0.1-0.3 microns.

[0016] Trimming process: Start the grinding wheel dressing device: When dressing starts, the control system sends a command to drive the motor to drive the eccentric wheel to move, and the dressing block vibrates at high frequency and slightly on the surface of the grinding wheel lapping groove as the eccentric wheel rotates.

[0017] Adjust the angle and stroke of the dressing block: By adjusting the locking mechanism of multiple sets of coaxial sleeves, the contact angle between the dressing block and the grinding wheel surface can be accurately set, and the dressing stroke can be adjusted according to the degree of wear of the grinding wheel. Usually, the angle setting range is 0° to 15°, and the stroke adjustment range is 0.5mm to 3mm.

[0018] Online dressing: There is no need to stop the machine and disassemble the grinding wheel during the dressing process. The dressing block gradually eliminates the unevenness and deviation of the grinding wheel surface under the action of pressure and vibration, ensuring that the shape and depth of the lapping groove are uniform.

[0019] Cleaning up the waste chips during dressing: After the dressing is completed, turn on the vacuum cleaning system of the equipment to clean up the waste chips generated during the dressing process to avoid contamination of the grinding process.

[0020] The dressing process of the present invention integrates an intelligent control module, and the dressing parameters (such as dressing time, dressing frequency and dressing depth) can be preset through a touch screen or a remote terminal. The wear of the dressing block and the surface state of the grinding wheel are monitored in real time through sensors, and the dressing process is fed back to ensure that the dressing effect is stable and reliable. During the dressing process, the contact pressure between the dressing block and the grinding wheel surface is monitored to dynamically adjust the speed and vibration frequency of the eccentric wheel to avoid over-dressing or under-dressing. Experimental data shows that when the vibration frequency is set to 50Hz and the contact pressure is controlled at 10N, the dressing efficiency and accuracy are optimal.

[0021] The following are specific experimental data, based on the actual application comparison test of the prior art and the process of the present invention, the data covers the finishing efficiency, processing accuracy and labor intensity.

[0022] Experimental conditions 1. Test subjects Prior art: Disassembly and dressing process of traditional resin grinding wheel ball plate.

[0023] The present invention: a portable grinding wheel dressing process.

[0024] 2. Test equipment Prior art uses conventional turning machine tools to dress grinding wheels.

[0025] The present invention uses a portable finishing tool to perform direct online finishing.

[0026] 3. Test parameters Dressing time, dressing accuracy, worker working hours and equipment maintenance costs, etc.

[0027] 4. Test environment The comparison was carried out under the same batch of steel ball production conditions. Each test was run in an 8-hour shift, and the quality of the steel balls after completion of the trimming was evaluated.

[0028] Specific data comparison:

[0029] 1. Repair time and efficiency The online dressing of the present invention does not require the removal of the grinding wheel. The single dressing time is 45 minutes, which is much lower than the 120 minutes of the prior art. The dressing efficiency is increased by 3 times. In an 8-hour shift, the prior art can only complete the dressing of 2 sets of grinding wheels, while the process of the present invention can complete the dressing of 6 sets, and the equipment utilization rate is increased to 96%; 2. Processing accuracy and product quality The process of the present invention uses a portable dressing block to maintain the coaxiality of the equipment, and the dressing accuracy deviation is reduced from ±0.02mm in the prior art to ±0.005mm, and the qualified rate of steel balls is increased from 92.3% to 98.7%, meeting higher quality requirements and reducing the scrap rate; 3. Labor intensity The prior art requires two workers to collaborate in disassembling and carrying the grinding wheel, and a single operation requires carrying a 150kg grinding wheel. However, the process of the present invention only requires one person to complete the dressing directly on the equipment, without the need for carrying operations, reducing labor intensity by 50%, and significantly improving the working environment.

[0030] in conclusion: Specific experimental data show that the present invention comprehensively surpasses traditional processes in terms of trimming time, efficiency, precision and labor intensity. It not only optimizes the production process, but also reduces the overall cost, and has significant economic and industrial application value.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable grinding wheel dressing process for lapping bearing steel balls, characterized in that: The portable grinding wheel dressing process for fine grinding of wind power large balls comprises the following steps: Step 1: Tool installation: Fix the portable dressing tool to the working position of the grinding wheel through the quick buckle structure; Step 2: Precision positioning: Use the positioning module to make the dressing block fit the grinding wheel surface precisely; Step 3: Dressing preparation: Apply diamond powder on the surface of the dressing block as a dressing medium; Step 4: Grinding wheel dressing: The dressing block is driven to reciprocate by the eccentric wheel, and the dressing angle is adjusted by the coaxial sleeve; Step 5: Trimming monitoring: Real-time monitoring of trimming accuracy through sensors; Step 6: Dressing is completed: clean the grinding wheel surface and remove the tooling; Step 7: Data recording: record the dressing parameters and the accuracy data of the grinding wheel after dressing.

2. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The contact surface of the trimming block is coated with nano-scale diamond with a coating thickness of 0.2-0.5 mm.

3. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The diameter of the eccentric wheel is 30-50 mm, and the stroke range of the trimming block is 10-25 mm.

4. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The positioning module adopts a laser positioning system with a positioning accuracy of 0.01 mm.

5. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The pressure between the grinding wheel and the dressing block during the dressing process ranges from 5 to 15 Newtons.

6. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The weight of the finishing tool is 2.5-4 kg.

7. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The power of the trimming motor is 100-300 watts, and the speed range is 500-1500 rpm.

8. A portable grinding wheel dressing process for lapping a bearing steel ball according to claim 1, characterized in that: The surface roughness Ra value of the grinding wheel after the dressing is completed is 0.1 micrometer to 0.3 micrometer.

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