High-roughness rubber roller grinding process

Abstract

The invention relates to a high-roughness rubber roller grinding process which sequentially comprises the steps of grinding wheel first-time finishing, rubber roller rough grinding, grinding wheel second-time finishing and rubber roller accurate grinding. The grinding wheel is trimmed for 20 times for the first time, the linear speed of the grinding wheel is 15 m / S, the moving speed of a supporting plate driving the grinding wheel to move axially is 200 mm / min, the grinding wheel is fed by 20 microns in the radial direction relative to a trimming cutter in each time, the load current of the grinding wheel is 9-11 A at the moment, and the rotating speed of a rubber roller is 0; according to the high-roughness rubber roller grinding process, through reasonable configuration of all the steps and all the parameters, the success rate of grinding the rubber rollers meeting the quality requirement is increased, the problem of unstable grinding quality is solved, the number of the rubber rollers meeting the quality requirement in unit time is guaranteed, and grinding efficiency is improved.

Description

Technical Field

[0002] The invention relates to a rubber roller grinding process, in particular to a high-roughness rubber roller grinding process. Background Art

[0004] The rubber roller is a roller-shaped product made of metal or other materials as the core and rubber covered by vulcanization. During the processing of aluminum strips, the rubber roller plays the role of finishing and tightening the aluminum strips. After the rubber roller has been used for a period of time, the roughness of the rubber layer on the surface of the rubber roller will decrease, deformation will occur, and defects will occur.

[0005] The applicant applied for the Chinese patent "Flexibly connected rubber roller grinding and removing transverse grain device and its working method" in December 2023, publication number CN117600934A. Although this patent can improve the grinding knife marks, vibration marks and transverse grains on the surface of the rubber roller to a certain extent, the effect is still poor, especially the number of rubber rollers that meet the grinding quality requirements in the same time, that is, the above-mentioned technical scheme has uncertainty in the grinding quality during grinding, that is, the success rate of grinding rubber rollers that meet the quality requirements is low. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a high-roughness rubber roller grinding process, which can improve the success rate of grinding rubber rollers that meet quality requirements.

[0008] The high-roughness rubber roller grinding process of the present invention is characterized by: sequentially comprising the first grinding wheel dressing, rubber roller rough grinding, the second grinding wheel dressing and rubber roller fine grinding; The first dressing of the grinding wheel: the grinding wheel is dressed for 20 times, the linear speed of the grinding wheel is 15m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 200mm / min, and the grinding wheel is radially fed 20um relative to the dressing knife for each pass. At this time, the grinding wheel load current is 9-11A, and the speed of the rubber roller is 0; The second dressing of the grinding wheel: the grinding wheel is dressed for 2 passes, the linear speed of the grinding wheel is 15m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 350mm / min, and the radial feed of the grinding wheel relative to the dressing knife is 40-80um in each pass. At this time, the grinding wheel load current is 9-11A, and the speed of the rubber roller is 0; Coarse grinding of rubber roller: use the grinding wheel after the first dressing to perform rough grinding for n times, the linear speed of the grinding wheel is 25m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 1000mm / min, the radial feed of the grinding wheel relative to the rubber roller is 3um in each pass, the speed of the rubber roller is 10r / min, and it is required to grind until the load current of the grinding wheel is stable to 25A; Rubber roller fine grinding: Use the grinding wheel after the second dressing to fine grind 3 times. The linear speed of the grinding wheel is 25m / S. The movement speed of the support plate that drives the grinding wheel to move axially is 1000-750mm / min. The radial feed of the grinding wheel relative to the rubber roller is 0um in each pass. The speed of the rubber roller is 10-15r / min. The surface roughness of the rubber roller is required to be ground to Ra8.0-12.0.

[0009] Preferably, two passes of rough grinding of the rubber roller are performed after the rough grinding of the rubber roller and before the second dressing of the grinding wheel, the linear speed of the grinding wheel is 23-24 m / s, the moving speed of the support plate that drives the grinding wheel to move axially is 1000 mm / min, the radial feed of the grinding wheel relative to the rubber roller is 0 um in each pass, the rotation speed of the rubber roller is 10 r / min, and the load current of the grinding wheel is 21-23 A at this time; Preferably, in the above-mentioned rubber roller fine grinding, the rubber roller speed of the first pass of the grinding wheel fine grinding is 10r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 1000mm / min, and the grinding wheel load current is 21A; the rubber roller speed of the second and third passes of the grinding wheel fine grinding is 15r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 750mm / min, and the grinding wheel load current is 20A.

[0010] The high-roughness rubber roller grinding process of the present invention improves the success rate of grinding rubber rollers that meet quality requirements through the reasonable configuration of various steps and various parameters, and avoids the problem of unstable grinding quality. That is, the number of rubber rollers that meet quality requirements ground per unit time is guaranteed, which is conducive to improving grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a table of specific parameter values ​​of the present invention. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0016] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0017] The high-roughness rubber roller grinding process of the present invention sequentially comprises the following steps: first grinding wheel dressing, rubber roller rough grinding, second grinding wheel dressing and rubber roller fine grinding; The first dressing of the grinding wheel: the grinding wheel is dressed 20 times, one time means that the grinding wheel moves axially driven by the support plate, so that the dressing knife (diamond knife) dresses the circumferential surface of the grinding wheel from the beginning to the end once, the linear speed of the grinding wheel is 15m / S, the movement speed of the support plate that drives the grinding wheel to move axially is 200mm / min, and the grinding wheel is radially fed 20um relative to the dressing knife in each pass. At this time, the grinding wheel load current is 9-11A (the grinding wheel is driven by a motor, and the grinding wheel load current is reflected by detecting the current of the motor), and the rubber roller speed is 0.

[0018] The second dressing of the grinding wheel: the grinding wheel is dressed for 2 passes, the linear speed of the grinding wheel is 15m / S, the movement speed of the support plate that drives the grinding wheel to move axially is 350mm / min, and the grinding wheel is radially fed 40-80um relative to the dressing knife in each pass. At this time, the grinding wheel load current is 9-11A, and the rubber roller speed is 0.

[0019] The above-mentioned grinding wheel adopts the commercially available 46# grinding wheel.

[0020] Rough grinding of rubber roller: use the grinding wheel after the first dressing to perform rough grinding for n times, the linear speed of the grinding wheel is 25m / S, the movement speed of the support plate that drives the grinding wheel to move axially is 1000mm / min, the radial feed of the grinding wheel relative to the rubber roller is 3um per pass, and the rotation speed of the rubber roller is 10r / min. The specific value of the above-mentioned rough grinding of n times of grinding wheel is determined by the load current value of the grinding wheel, that is, when the load current of the grinding wheel is stable at 25A, the rough grinding of n times is completed.

[0021] Rubber roller fine grinding: Use the grinding wheel after the second dressing to fine grind 3 times. The linear speed of the grinding wheel is 25m / S. The movement speed of the support plate that drives the grinding wheel to move axially is 1000-750mm / min. The radial feed of the grinding wheel relative to the rubber roller is 0um in each pass. The speed of the rubber roller is 10-15r / min. The surface roughness of the rubber roller is required to be ground to Ra8.0-12.0.

[0022] The specific measurement of the surface roughness of the rubber roller is to use a surface roughness measuring instrument to measure the roughness three times between 900-1100 mm from the edge of the rubber roller, and the average value is taken as the roughness of the rubber roller.

[0023] After the above-mentioned rough grinding of the rubber roller and before the second dressing of the grinding wheel, two passes of rough grinding of the rubber roller are performed. The linear speed of the grinding wheel is 23-24m / S, the movement speed of the support plate that drives the grinding wheel to move axially is 1000mm / min, the radial feed of the grinding wheel relative to the rubber roller is 0um in each pass, the rotation speed of the rubber roller is 10r / min, and the load current of the grinding wheel is 21-23A.

[0024] In the above-mentioned rubber roller fine grinding, the rubber roller speed of the first pass of the grinding wheel fine grinding is 10r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 1000mm / min, and the grinding wheel load current is 21A. The rubber roller speed of the second and third passes of the grinding wheel fine grinding is 15r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 750mm / min, and the grinding wheel load current is 20A.

[0025] The rubber roller of the present invention meets the following conditions after processing: the rubber roller roughness value Ra=8-12um, the rubber roller meets the diameter difference ≤0.1mm, the roundness ≤0.01mm, and there is no obvious grinding knife mark, vibration mark and transverse mark on the surface of the rubber roller; through the above process steps, the processed rubber roller can meet the above conditions by more than 90% (the existing ones can only meet 30-40%), which improves the success rate of grinding rubber rollers that meet the quality requirements and avoids the problem of unstable grinding quality, that is, the number of rubber rollers that meet the quality requirements in unit time can be guaranteed, which is conducive to improving the grinding efficiency.

[0026] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high roughness rubber roller grinding process, characterized in that: It includes the first dressing of the grinding wheel, rough grinding of the rubber roller, the second dressing of the grinding wheel and fine grinding of the rubber roller in sequence; The first dressing of the grinding wheel: the grinding wheel is dressed for 20 times, the linear speed of the grinding wheel is 15m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 200mm / min, and the grinding wheel is radially fed 20um relative to the dressing knife for each pass. At this time, the grinding wheel load current is 9-11A, and the speed of the rubber roller is 0; The second dressing of the grinding wheel: the grinding wheel is dressed for 2 passes, the linear speed of the grinding wheel is 15m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 350mm / min, and the radial feed of the grinding wheel relative to the dressing knife is 40-80um in each pass. At this time, the grinding wheel load current is 9-11A, and the speed of the rubber roller is 0; Coarse grinding of rubber roller: use the grinding wheel after the first dressing to perform rough grinding for n times, the linear speed of the grinding wheel is 25m / S, the moving speed of the support plate that drives the grinding wheel to move axially is 1000mm / min, the radial feed of the grinding wheel relative to the rubber roller is 3um in each pass, the speed of the rubber roller is 10r / min, and it is required to grind until the load current of the grinding wheel is stable to 25A; Rubber roller fine grinding: Use the grinding wheel after the second dressing to fine grind 3 times. The linear speed of the grinding wheel is 25m / S. The movement speed of the support plate that drives the grinding wheel to move axially is 1000-750mm / min. The radial feed of the grinding wheel relative to the rubber roller is 0um in each pass. The speed of the rubber roller is 10-15r / min. The surface roughness of the rubber roller is required to be ground to Ra8.0-12.

0.

2. The high roughness rubber roller grinding process according to claim 1, characterized in that: After the rough grinding of the rubber roller and before the second dressing of the grinding wheel, two passes of rough grinding of the rubber roller are performed. The linear speed of the grinding wheel is 23-24m / S, the movement speed of the support plate that drives the grinding wheel to move axially is 1000mm / min, the grinding wheel is radially fed 0um relative to the rubber roller in each pass, the rubber roller rotation speed is 10r / min, and the grinding wheel load current is 21-23A.

3. The high roughness rubber roller grinding process according to claim 1, characterized in that: In the rubber roller fine grinding, the rubber roller speed of the first pass of the grinding wheel fine grinding is 10r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 1000mm / min, and the grinding wheel load current is 21A. The rubber roller speed of the second and third passes of the grinding wheel fine grinding is 15r / min, the moving speed of the support plate that drives the grinding wheel axial movement is 750mm / min, and the grinding wheel load current is 20A.

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