A scraping method for a circular rotary indexing table base

Abstract

The application provides a scraping method for a ring rotary indexing table base, which comprises the following steps: S1. tool preparation; S2. base coarse adjustment, aligning each static pressure guide rail plate on the base and the inner ring bearing row of the base, and fastening and leveling the base; S3. base fine adjustment, measuring the gap value between the combination surface of the table and the toothed cross cylindrical roller turntable bearing and the inner ring of the base, fastening and leveling the base again until the gap value difference is within 0.1 mm; S4. toothed bearing installation, measuring the gap between the bottom of the toothed bearing and the inner ring of the base, and adjusting the grinding pad; S5. dragging and scraping, coating an appropriate amount of red powder on the guide rail surface of the base, hoisting the table on the base, rotating the table to drag and scrape, hoisting the table again, and scraping the base by using a scraping tool; S6. scraping reinspection, checking the parallelism between the inner ring bearing installation surface of the base and the outer ring guide rail surface; if the parallelism does not meet the process requirement, repeating steps S5-S6. The application can improve the convenience and accuracy of the scraping of the ring rotary indexing table base.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machine tool assembly processes, in particular to a scraping method for a ring-shaped rotary indexing table base. BACKGROUND

[0002] The scraping method is widely used in machine tool products and plays a key role in the geometric precision of the whole machine during the machine tool assembly process. The table and the base are a key component of the machine tool. Whether the table base can successfully complete the scraping assembly is related to the progress of the whole machine.

[0003] In particular, for the scraping of a heavy ring-shaped rotary indexing table base supported by rolling bearings and static pressure, there is still a technical gap in China at present. Therefore, a new scraping method is urgently needed to make the scraping of the ring-shaped rotary indexing table base supported by rolling bearings and static pressure more accurate and convenient. SUMMARY

[0004] In order to improve the convenience and accuracy of the scraping of the heavy ring-shaped rotary indexing table base supported by rolling bearings and static pressure, the application provides a scraping method for a ring-shaped rotary indexing table base.

[0005] The scraping method for a ring-shaped rotary indexing table base provided by the application adopts the following technical scheme:

[0006] A scraping method for a ring-shaped rotary indexing table base, comprising the following steps:

[0007] S1. Tool preparation, prepare the tools required for scraping, such as API laser tracker, electronic level, pulley frame, scraping tool, thousandth pad and ruler, and perform counting, checking;

[0008] S2. Base coarse adjustment, use the electronic level to arrange and level each static pressure guide rail plate on the base, use the electronic level and the ruler to arrange and level the inner ring bearing in the base, and fasten and level the guide rail surface of the base and the mounting surface of the inner ring bearing according to the detection results, and hoist the table on the base;

[0009] S3. Base fine adjustment, measure the gap value between the combination surface of the table and the toothed cross cylindrical roller turntable bearing and the inner ring of the base by using the thousandth pad, and fasten and level the base again according to the detected gap value data until the difference between the gap values is within 0.1 mm, and complete the leveling;

[0010] S4. Toothed bearing installation, install the toothed bearing on the table, hoist the table on the base as a whole, measure the gap between the bottom of the toothed bearing and the inner ring of the base by using the thousandth pad, and adjust the pad according to the average value of the measurement;

[0011] S5. Dragging and scraping, applying a proper amount of red powder on the base guide rail surface, hoisting the workbench on the base again, rotating the workbench by the pulley frame to perform dragging and scraping, hoisting the workbench again, and scraping the base by the scraping tool;

[0012] S6. Scraping and re-inspecting, checking the parallelism between the inner ring bearing mounting surface and the outer ring guide rail surface of the base by the API laser tracker; if the parallelism does not meet the process requirements, repeating steps S5-S6.

[0013] Further, in step S5, the pulley frame is used first, one end of the workbench is connected with a steel wire rope, the other end is connected with the crane through the pulley frame, the crane is slowly raised, the workbench starts to rotate under the driving of the steel wire rope, so that the two static pressure guide rail surfaces of the workbench and the base are relatively slid, and then the contact between the workbench and the base guide rail surface is judged according to the abrasion of the red powder on the base static pressure guide rail surface, so that the base is scraped according to the contact condition.

[0014] Further, in step S5, the angle of rotation of the workbench during the dragging and scraping by the pulley frame should not be greater than 60 degrees.

[0015] Further, in step S2, the normal direction of each static pressure guide rail plate in the tangential direction and the longitudinal and transverse 45-degree direction is leveled by the electronic level.

[0016] Further, in step S2, the tangential direction of the inner ring bearing mounting surface of the base is leveled by the electronic level and the straightedge.

[0017] Further, in step S3, the gap value is measured by the thousandth pad by dividing 24 points.

[0018] Further, in step S3, if the maximum difference of the gap value is greater than the process requirement, the parallelism between the bearing mounting surface and the outer ring guide rail surface is detected by the API laser tracker, and the base is secondarily fastened and leveled according to the detected parallelism data.

[0019] Further, in step S1, the API laser tracker is placed in the inner ring of the base for calibration.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. The present application first coarsely and finely adjusts the base to accurately level the base, then applies a proper amount of red powder on the base guide rail surface, hoists the workbench on the base, rotates the workbench by the pulley frame to perform dragging and scraping, and scrapes the base according to the abrasion of the red powder, which can greatly reduce the scraping amount, thereby improving the convenience and accuracy of scraping the base of the annular rotary indexing workbench.

[0022] 2. By setting the pulley frame, the large annular rotary indexing workbench can be conveniently rotated by means of the crane, thereby reducing the difficulty of scraping. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a flowchart of the embodiment of the present application;

[0025] Figure 2 is a cross-sectional structure schematic diagram of the workbench and base scraping in the embodiment of the present application;

[0026] Figure 3 is a schematic diagram of the embodiment of the present application using the pulley frame to drive the workbench to drag the base.

[0027] Reference signs:

[0028] 1, base; 2, workbench; 3, inner ring bearing; 4, adjusting pad; 51, pulley frame; 52, steel wire rope. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the present application will be clearly and completely described below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0030] With reference to Figure 1 and Figure 2 , the embodiment of the present application discloses a scraping method of the annular rotary indexing workbench 2 base 1, which comprises the following steps:

[0031] S1. Tool preparation, prepare the tools required for scraping, such as API laser tracker, electronic level, pulley frame 51, tool, thousandth pad and ruler, and count, check; and when setting specifically, place the API laser tracker in the inner ring of the base 1 to check.

[0032] S2. Coarse adjustment of the base 1, the horizontal level of each static pressure rail plate on the base 1 is arranged by using an electronic level, specifically, the normal horizontal level of each static pressure rail plate in the tangential direction and the longitudinal and transverse 45-degree direction is arranged by using an electronic level; the horizontal level of the inner ring bearing 3 in the base 1 is arranged by using an electronic level and a leveling ruler, specifically, the tangential horizontal level of the mounting surface of the inner ring bearing 3 in the base 1 is arranged by using an electronic level and a leveling ruler; and the rail surface of the base 1 and the mounting surface of the inner ring bearing 3 are fastened and leveled according to the detection results, and the workbench 2 is hoisted on the base 1.

[0033] S3. Fine adjustment of the base 1, the gap value between the workbench 2 and the toothed cross-cylindrical roller turntable bearing joint surface and the inner ring of the base 1 is measured by using a thousandth pad according to 24-point equal division, the base 1 is fastened and leveled again according to the detected gap value data, until the maximum difference of the gap value is within 0.1 mm, and the leveling is completed. Moreover, if the maximum difference of the gap value is greater than the process requirement, if the assembly continues, it will cause the excessive scraping and grinding amount in the later period, which is time-consuming and laborious, therefore, the parallelism between the mounting surface of the inner ring bearing 3 and the rail surface of the base 1 needs to be detected, but due to the large diameter of the base 1, the conventional leveling ruler is too short to be detected, in order to ensure the consistency of the adjustment pad 4, the parallelism between the bearing mounting surface and the outer ring rail surface is detected by using an API laser tracker, and the base 1 is fastened and leveled again according to the detected parallelism data.

[0034] S4. Installation of the toothed bearing, the toothed bearing is installed on the workbench 2, the workbench 2 is hoisted on the base 1 as a whole, the gap between the bottom of the toothed bearing and the inner ring of the base 1 is measured by using a thousandth pad, and the grinding adjustment pad 4 is matched according to the average value.

[0035] S5. Dragging and scraping, a proper amount of red powder is applied on the rail surface of the base 1, the workbench 2 is hoisted on the base 1 again, the workbench 2 is rotated by using a pulley frame 51 to perform dragging and scraping, and the workbench 2 is hoisted again to scrape the base 1 by using a grinding tool.

[0036] S6. Re-inspection of scraping, the parallelism between the mounting surface of the inner ring bearing 3 and the rail surface of the outer ring of the base 1 is checked by using an API laser tracker; if it does not meet the process requirement, steps S5-S6 are repeated.

[0037] Among them, refer to Figure 2 and Figure 3, the step S5 uses the pulley frame 51, the pulley frame 51 is installed in the tangential direction of the base 1, one end of the workbench 2 is connected with the steel wire rope 52, the other end is connected with the crane through the pulley frame 51, the crane is slowly lifted, the workbench 2 is driven by the steel wire rope 52 to start rotating, so that the two static pressure guide rail surfaces of the workbench 2 and the base 1 are relatively slid; then the contact between the workbench 2 and the base 1 is judged according to the abrasion of the red lead powder on the static pressure guide rail surface of the base 1, so that the base 1 is scraped according to the contact; and the pulley frame 51 is used for dragging and scraping the workbench 2, and the angle of the workbench 2 is not greater than 60 degrees during one rotation.

[0038] Through the assembly technology, the scraping difficulty problem of the base 1 of the annular rotary indexing workbench 2 supported by the rolling bearing and the static pressure is solved, the technology can be applied to the assembly of various large static pressure workbench 2 bases 1, the application condition is simple, and the universality is very strong.

[0039] The implementation principle of the scraping method of the base 1 of the annular rotary indexing workbench 2 is as follows:

[0040] First, the base 1 annular guide rail is leveled in the tangential direction and the normal direction of the 45-degree longitudinal and transverse direction of each static pressure guide rail plate by using an electronic level, and then the parallelism between the bearing mounting surface and the outer ring guide rail surface is detected by using an API laser tracker, and the parallelism is adjusted according to the detection data; then the workbench 2 is placed on the base 1, the adjusting pad 4 is measured and matched, the workbench 2 and the base 1 are dragged and scraped by using the pulley frame 51, the contact between the workbench 2 and the base 1 is judged according to the abrasion of the red lead powder on the static pressure guide rail surface of the base 1, so that the base 1 is scraped according to the contact; finally, whether the parallelism between the inner ring bearing 3 mounting surface and the outer ring guide rail surface reaches the process requirement is checked by using the API laser tracker. The method can better solve the problems of the large workbench 2 and the base 1 of the same type machine tool, such as the difficulty in determining the scraping amount, the complicated scraping steps and the high implementation cost, and has good economic benefits.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of scraping a rotary indexing table bed of an annular ring, characterized by, The method comprises the following steps: S1. Tool preparation, prepare the API laser tracker, electronic level, pulley frame, lapping tool, thousandth pad and ruler required for lapping, and check and verify; S2. Base coarse adjustment, use the electronic level to arrange the horizontal direction of each static pressure guide rail plate on the base, use the electronic level and the ruler to arrange the horizontal direction of the inner ring bearing of the base, and fasten and level the mounting surface of the base guide rail and the inner ring bearing according to the detection results, and hoist the workbench on the base; S3. Base fine adjustment, use the thousandth pad to measure the gap value between the workbench and the toothed cross-cylindrical roller bearing combination surface and the inner ring of the base, and fasten and level the base again according to the detected gap value data until the gap value difference is within 0.1 mm, and the leveling is completed; S4. Toothed bearing installation, install the toothed bearing on the workbench, hoist the workbench on the base as a whole, and measure the gap between the bottom of the toothed bearing and the inner ring of the base by using the thousandth pad, and adjust the pad according to the average value; S5. Dragging and lapping, apply an appropriate amount of red powder on the base guide rail surface, hoist the workbench on the base again, rotate the workbench by using the pulley frame to drag and lap, hoist the workbench again, and scrape the base by using the lapping tool; S6. Lapping re-inspection, use the API laser tracker to check the parallelism between the inner ring bearing mounting surface and the outer ring guide rail surface of the base; if it does not meet the process requirements, repeat steps S5-S6; In step S5, when the pulley frame is used, one end of the workbench is connected with a steel wire rope, and the other end is connected with the crane through the pulley frame, the crane is slowly raised, the workbench starts to rotate under the drive of the steel wire rope, and then the contact between the workbench and the base is determined according to the abrasion of the red powder on the base static pressure guide rail surface, so as to scrape the base according to the contact condition.

2. A method of scraping the bed of an annular rotary indexing table according to claim 1, characterised in that, In step S5, the rotation angle of the workbench during dragging and lapping by using the pulley frame should not be greater than 60 degrees.

3. A method of scraping the bed of an annular indexing table according to claim 1, characterised in that, In step S2, the electronic level is used to arrange the horizontal direction of each static pressure guide rail plate in the tangential direction and the longitudinal and transverse 45-degree direction.

4. A method of scraping the bed of an annular rotary indexing table according to claim 1, wherein, In step S2, the electronic level and the ruler are used to arrange the horizontal direction of the inner ring bearing mounting surface of the base in the tangential direction.

5. A method of scraping the bed of an annular rotary indexing table according to claim 1, wherein, In step S3, the thousandth pad is used to measure the gap value in 24 points.

6. A method of scraping the bed of an annular rotary indexing table according to claim 1, wherein, In step S3, if the maximum difference of the gap value is greater than the process requirement, the parallelism between the bearing mounting surface and the outer ring guide rail surface is detected by using the API laser tracker, and the base is fastened and leveled again according to the detected parallelism data.

7. A method of scraping the bottom of an annular rotary indexing table according to claim 1, wherein, In step S1, the API laser tracker is placed in the inner ring of the base for verification.

Images