Scraping method of annular rotary indexing table base

Abstract

The invention provides a scraping and grinding method for an annular rotary indexing table base. The scraping and grinding method comprises the following steps that S1, a tool is prepared; s2, base coarse adjustment is conducted, specifically, each hydrostatic guideway plate on the base and a base inner ring bearing row are leveled, and the base is fastened and leveled; s3, finely adjusting the base, measuring a gap value between a joint surface of the workbench and the toothed crossed cylindrical roller turntable bearing and an inner ring of the base, and carrying out secondary fastening and leveling on the base until the difference value of the gap value is within 0.1 mm; s4, a toothed bearing is installed, the gap between the bottom of the toothed bearing and the inner ring of the base is measured, and an adjusting pad is ground in a matched mode; s5, dragging and scraping combined grinding: coating a proper amount of red lead powder on the guide rail surface of the base, hoisting the worktable on the base, rotating the worktable to carry out dragging and scraping combined grinding, hoisting the worktable, and scraping and grinding the base by utilizing a grinding tool; s6, scraping and rechecking: checking the parallelism of the bearing mounting surface of the inner ring of the base and the guide rail surface of the outer ring; and if the technological requirements are not met, the steps S5-S6 are repeated. According to the application, the scraping convenience and accuracy of the annular rotary indexing table base can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of machine tool assembly technology, and in particular to a scraping method for a base of an annular rotary indexing worktable. Background Art

[0002] The scraping method is widely used in machine tool products and plays a key role in the geometric accuracy of the whole machine during the assembly process of the machine tool. The workbench and base are a key component of the machine tool. Whether the workbench base can be scraped and assembled smoothly is related to the progress of the entire machine tool.

[0003] Especially for the scraping and grinding of the base of the heavy-duty annular rotary indexing worktable supported by rolling bearings and hydrostatic cooperation, there is still a technical gap in the country. Therefore, it is urgent to study a new scraping and grinding method to make the scraping and grinding of the base of the heavy-duty annular rotary indexing worktable supported by rolling bearings and hydrostatic cooperation more accurate and convenient. Summary of the invention

[0004] In order to improve the convenience and accuracy of scraping and grinding of the base of a heavy-duty annular rotary indexing worktable supported by rolling bearings and static pressure, the present application provides a scraping and grinding method for the base of annular rotary indexing worktable.

[0005] The present application provides a scraping method for the base of an annular rotary indexing worktable using the following technical solution: A scraping method for a ring-shaped rotary indexing worktable base comprises the following steps: S1. Tool preparation: prepare the API laser tracker, electronic level, pulley frame, grinding tool, micrometer pad, flat ruler and other tools required for scraping and grinding, and count and check them; S2. Roughly adjust the base, use the electronic level to level each hydrostatic guide rail plate on the base, use the electronic level and the level ruler to level the inner ring bearing of the base, tighten and level the base guide rail surface and the inner ring bearing mounting surface according to the test results, and hoist the workbench on the base; S3. Fine-tune the base, use the micrometer pad to measure the gap between the workbench and the toothed cross cylindrical roller turntable bearing mating surface and the inner ring of the base, and perform secondary tightening and leveling of the base according to the detected gap value data until the gap value difference is within 0.1mm, and the leveling is completed; S4. Install the toothed bearing on the workbench, hoist the workbench on the base as a whole, use the micrometer pad to measure the gap between the bottom of the toothed bearing and the inner ring of the base, and grind the adjustment pad according to the measured average value; S5. Drag and scrape the base rail surface, apply an appropriate amount of red lead powder, hoist the workbench on the base again, use the pulley frame to rotate the workbench to drag and scrape the base, then lift the workbench and use the grinding tool to scrape the base; S6. Scrape and re-inspect, using the API laser tracker to check the parallelism between the inner ring bearing mounting surface of the base and the outer ring guide surface; if it does not meet the process requirements, repeat steps S5-S6.

[0006] Furthermore, when the pulley frame is used in step S5, one end of the workbench is first connected to the wire rope and the other end is connected to the crane through the pulley frame, and the crane is slowly raised so that the workbench starts to rotate driven by the wire rope, thereby causing the two hydrostatic guide rail surfaces in contact with the base to slide relative to each other; then, the contact condition between the workbench and the base guide rail surface is judged through the wear condition of the red lead powder on the hydrostatic guide rail surface of the base, and the base is scraped and ground according to the contact condition.

[0007] Furthermore, in step S5, when the pulley frame is used for dragging and scraping, the rotation angle of the workbench shall not be greater than 60 degrees.

[0008] Furthermore, in step S2, the electronic level is used to level each hydrostatic guide plate in the tangential direction and the vertical and horizontal 45-degree directions.

[0009] Furthermore, in step S2, the electronic level and the straightedge are used to tangentially level the mounting surface of the inner ring bearing of the base.

[0010] Furthermore, in step S3, the gap value is measured by using the micrometer pad at 24 points.

[0011] Furthermore, in step S3, if the maximum difference of the gap value is greater than the process requirement, the API laser tracker is used to detect the parallelism between the bearing mounting surface and the outer ring guide surface based on the bearing mounting surface, and then the base is tightened and leveled for the second time based on the detected parallelism data.

[0012] Furthermore, in step S1, the API laser tracker is placed in the inner circle of the base for calibration.

[0013] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application firstly adjusts the base by rough and fine adjustment to accurately level the base, then applies a proper amount of red lead powder on the guide rail surface of the base, then hoists the workbench on the base, rotates the workbench by a pulley frame to perform dragging, scraping and grinding, and then scrapes and grinds the base according to the wear of the red lead powder, which can greatly reduce the scraping amount, thereby improving the convenience and accuracy of scraping and grinding the base of the circular rotary indexing workbench; 2. By setting up a pulley frame, the large circular rotary indexing worktable can be easily rotated with the help of a crane, thereby reducing the difficulty of scraping and grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the process of an embodiment of the present application; Figure 2 This is a schematic diagram of the cross-sectional structure of the workbench and the base during scraping and grinding of the embodiment of the present application; Figure 3 It is a schematic diagram of an embodiment of the present application using a pulley frame to drive a workbench to drag and scrape a base.

[0016] Reference numerals: 1. Base; 2. Workbench; 3. Inner ring bearing 4. Adjustment pad; 51. Pulley frame; 52. Wire rope. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0018] Reference Figure 1 and Figure 2 The present application embodiment discloses a scraping method for the base 1 of the annular rotary indexing worktable 2, which comprises the following steps: S1. Tool preparation: prepare the API laser tracker, electronic level, pulley frame 51, grinding tool, micrometer pad and flat ruler required for scraping and grinding, and count and calibrate them; and when setting up specifically, place the API laser tracker in the inner circle of the base 1 for calibration.

[0019] S2. Roughly adjust the base 1, use an electronic level to level each hydrostatic guide plate on the base 1, specifically, use the electronic level to level the tangential direction and the vertical and horizontal 45-degree directions of each hydrostatic guide plate; use the electronic level and a straight ruler to level the inner ring bearing 3 of the base 1, specifically, use the electronic level and a straight ruler to level the tangential direction of the mounting surface of the inner ring bearing 3 of the base 1; and tighten and level the guide surface of the base 1 and the mounting surface of the inner ring bearing 3 according to the test results, and hoist the workbench 2 on the base 1.

[0020] S3. Fine-tune the base 1, use a micrometer pad to measure the clearance between the workbench 2 and the toothed cross cylindrical roller turntable bearing mating surface and the inner ring of the base 1 at 24 points, and perform secondary tightening and leveling of the base 1 according to the detected clearance value data until the maximum difference in the clearance value is within 0.1mm, and the leveling is completed. In addition, if the maximum difference in the clearance value is greater than the process requirements, if the assembly continues, it will lead to excessive scraping and grinding in the later stage, which is time-consuming and labor-intensive. Therefore, it is necessary to detect the parallelism between the mounting surface of the inner ring bearing 3 of the base 1 and the guide surface. However, due to the large diameter of the base 1, the conventional flat ruler is too short to detect. In order to ensure the consistency of the matching adjustment pad 4, the API laser tracker is used to detect its parallelism with the outer ring guide surface based on the bearing mounting surface, and then the base 1 is tightened and leveled for the second time according to the detected parallelism data.

[0021] S4. Install the toothed bearing on the workbench 2, hoist the workbench 2 on the base 1 as a whole, use a micrometer pad to measure the gap between the bottom of the toothed bearing and the inner ring of the base 1, and grind the adjustment pad 4 according to the measured average value.

[0022] S5. Drag and scrape grinding: apply an appropriate amount of red lead powder on the guide surface of the base 1, hoist the workbench 2 on the base 1 again, use the pulley frame 51 to rotate the workbench 2 to perform drag and scrape grinding, then hoist the workbench 2, and use the grinding tool to scrape the base 1.

[0023] S6. Scrape and re-inspect, using an API laser tracker to check the parallelism between the mounting surface of the inner ring bearing 3 of the base 1 and the outer ring guide surface; if it does not meet the process requirements, repeat steps S5-S6.

[0024] Among them, refer to Figure 2 and Figure 3 When the pulley frame 51 is used in step S5, the pulley frame 51 is installed in the tangential direction of the base 1, and one end of the workbench 2 is first connected to the wire rope 52, and the other end is connected to the crane through the pulley frame 51, and the crane is slowly raised to make the workbench 2 start to rotate under the drive of the wire rope 52, so that the two hydrostatic guide rail surfaces in contact with the base 1 slide relative to each other; then, the contact condition between the workbench 2 and the guide rail surface of the base 1 is judged according to the wear condition of the red lead powder on the hydrostatic guide rail surface of the base 1, so as to scrape and grind the base 1 according to the contact condition; and when the pulley frame 51 is used for dragging and scraping, the rotation angle of the workbench 2 at one time shall not be greater than 60 degrees.

[0025] Through this assembly technology, the problem of difficult scraping of the base 1 of the annular rotary indexing worktable 2 supported by rolling bearings and hydrostatic cooperation is solved. This technology can also be promoted and applied to the assembly of various large hydrostatic worktable 2 bases 1. The application conditions are simple and the versatility is strong.

[0026] The implementation principle of a scraping method for the base 1 of a circular rotary indexing worktable 2 in the embodiment of the present application is as follows: First, the circular guide rail of the base 1 is leveled in the tangential direction and the normal direction of the longitudinal and transverse 45-degree directions of each hydrostatic guide rail plate using an electronic level, and then the API laser tracker is used to detect the parallelism between the bearing mounting surface and the outer ring guide rail surface based on the bearing mounting surface, and the tightening and leveling are performed according to the detection data; then the workbench 2 is placed on the base 1, and the adjustment pad 4 is measured and ground, and the pulley frame 51 is used to drag and scrape the base 1 of the workbench 2, and the contact between the workbench 2 and the guide rail surface of the base 1 is judged by the wear of the red lead powder on the hydrostatic guide rail surface of the base 1, so as to scrape the base 1 according to the contact situation; finally, the API laser tracker is used to check whether the parallelism between the mounting surface of the inner ring bearing 3 and the outer ring guide rail surface meets the process requirements. This method can better solve the problems of difficulty in determining the scraping amount, cumbersome scraping steps, and high implementation cost when the large workbench 2 and the base 1 of the same type of machine tool are jointly ground, and has good economic benefits.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for scraping and grinding the base of an annular rotary indexing worktable, characterized in that: The following steps are involved: S1. Tool preparation: prepare the API laser tracker, electronic level, pulley frame, grinding tool, micrometer pad, flat ruler and other tools required for scraping and grinding, and count and check them; S2. Roughly adjust the base, use the electronic level to level each hydrostatic guide rail plate on the base, use the electronic level and the level ruler to level the inner ring bearing of the base, tighten and level the base guide rail surface and the inner ring bearing mounting surface according to the test results, and hoist the workbench on the base; S3. Fine-tune the base, use the micrometer pad to measure the gap between the workbench and the toothed cross cylindrical roller turntable bearing mating surface and the inner ring of the base, and perform secondary tightening and leveling of the base according to the detected gap value data until the gap value difference is within 0.1mm, and the leveling is completed; S4. Install the toothed bearing on the workbench, hoist the workbench on the base as a whole, use the micrometer pad to measure the gap between the bottom of the toothed bearing and the inner ring of the base, and grind the adjustment pad according to the measured average value; S5. Drag and scrape the base rail surface, apply an appropriate amount of red lead powder, hoist the workbench on the base again, use the pulley frame to rotate the workbench to drag and scrape the base, then lift the workbench and use the grinding tool to scrape the base; S6. Scrape and re-inspect, using the API laser tracker to check the parallelism between the inner ring bearing mounting surface of the base and the outer ring guide surface; if it does not meet the process requirements, repeat steps S5-S6.

2. A method for scraping and grinding the base of an annular rotary indexing worktable according to claim 1, characterized in that: When the pulley frame is used in step S5, first connect one end of the workbench to the wire rope and the other end to the crane through the pulley frame, slowly raise the crane, so that the workbench starts to rotate driven by the wire rope, thereby causing the two hydrostatic guide rail surfaces in contact with the base to slide relative to each other; then, the contact condition between the workbench and the base guide rail surface is judged through the wear condition of the red lead powder on the hydrostatic guide rail surface of the base, and the base is scraped and ground according to the contact condition.

3. The scraping method for the base of an annular rotary indexing worktable according to claim 2 is characterized in that: In step S5, when the pulley frame is used for dragging and scraping, the rotation angle of the workbench shall not be greater than 60 degrees.

4. The scraping method for the base of an annular rotary indexing worktable according to claim 1 is characterized in that: In step S2, the electronic level is used to level each hydrostatic guide rail plate in the tangential direction and the vertical and horizontal 45-degree directions.

5. The scraping method for the base of an annular rotary indexing worktable according to claim 1, characterized in that: In step S2, the electronic level and the ruler are used to tangentially level the mounting surface of the inner ring bearing of the base.

6. The scraping method for the base of an annular rotary indexing worktable according to claim 1, characterized in that: In step S3, the gap value is measured by using the micrometer pad at 24 points.

7. The scraping method for the base of an annular rotary indexing worktable according to claim 1, characterized in that: In step S3, if the maximum difference of the gap value is greater than the process requirement, the API laser tracker is used to detect the parallelism between the bearing mounting surface and the outer ring guide surface based on the bearing mounting surface, and then the base is tightened and leveled for the second time according to the detected parallelism data.

8. The scraping method for the base of an annular rotary indexing worktable according to claim 1, characterized in that: In step S1, the API laser tracker is placed in the inner circle of the base for calibration.

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