A geometric accuracy adjustment method

Abstract

The present invention relates to the technical field of precision adjustment methods, and specifically, to a geometric precision adjustment method. The method includes: loosening the anchor bolts of the horizontal guide rail, vertical guide rail, and rotary table; using a level to preliminarily detect the horizontal guide rail and the rotary table, and adjusting the horizontal guide rail and the rotary table; using a dial indicator to perform a dial test on a high-precision hexahedron to obtain test data, and adjusting the horizontal guide rail, vertical guide rail, spindle, and rotary table according to the test data until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the spindle, the horizontal guide rail is parallel to the spindle, and the center line of the rotary table is parallel to the vertical guide rail; tightening the anchor bolts of the horizontal guide rail, vertical guide rail, and rotary table. Adjusting the horizontal guide rail, vertical guide rail, spindle, and rotary table based on the relative horizontal value reduces the adjustment difficulty of the horizontal guide rail, vertical guide rail, spindle, and rotary table.

Description

Technical Field

[0001] The present invention relates to the technical field of precision adjustment methods, and in particular, to a geometric precision adjustment method. Background Art

[0002] During the machining process of workpieces by a boring machine, it is necessary to first adjust the geometric precision of the boring machine to ensure that the machined workpieces have high precision. In the prior art, when adjusting the geometric precision of a boring machine, an absolute horizontal value is used as the basis. During the adjustment process, a level is required to adjust each structure of the boring machine in turn, which is difficult to adjust and takes a long time. At the same time, the method for adjusting the geometric precision of a boring machine in the prior art is a static adjustment method. There are internal stresses in each structure of the boring machine. When the boring machine is used to machine workpieces, the precision of the boring machine may change, that is, the geometric precision of the boring machine is difficult to maintain continuously. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the above technical problems.

[0004] To solve the above problems, the present invention provides a geometric precision adjustment method applied to a boring machine. The boring machine includes a main spindle bed, a horizontal guide rail, a slide plate, a column, a vertical guide rail, a main spindle box, a main spindle, a workbench bed, and a rotary worktable. The horizontal guide rail is arranged on the main spindle bed, the slide plate is slidably connected to the horizontal guide rail, the column is vertically arranged on the slide plate, the vertical guide rail is arranged on the column, the main spindle box is slidably connected to the vertical guide rail, the main spindle is arranged on the main spindle box, and the rotary worktable is arranged on the workbench bed. The method includes:

[0005] Loosen the anchor bolts of the horizontal guide rail, the vertical guide rail, and the rotary worktable;

[0006] Use a level to detect the horizontal guide rail and the rotary worktable, and perform a preliminary adjustment on the horizontal guide rail and the rotary worktable;

[0007] Set a dial indicator on the main spindle and set a high-precision hexahedron on the rotary worktable. Use the dial indicator to perform a pull-table detection on the high-precision hexahedron to obtain detection data, and adjust the horizontal guide rail, the vertical guide rail, the main spindle, and the rotary worktable according to the detection data until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the main spindle, the horizontal guide rail is parallel to the main spindle, and the center line of the rotary worktable is parallel to the vertical guide rail;

[0008] Tighten the anchor bolts of the horizontal guide rail, the vertical guide rail, and the rotary worktable.

[0009] Technical effects of the present invention: With a high-precision hexahedron as a reference, a dial indicator is used to perform a pull-table inspection on the high-precision hexahedron, and the horizontal guide rail, vertical guide rail, spindle, and rotary table are adjusted respectively until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the spindle, the horizontal guide rail and the spindle are parallel, and the center line of the rotary table is parallel to the vertical guide rail. Thus, based on the high-precision hexahedron, the horizontal guide rail, vertical guide rail, spindle, and rotary table are adjusted, that is, the horizontal guide rail, vertical guide rail, spindle, and rotary table are adjusted based on the relative horizontal value rather than the absolute horizontal value, reducing the adjustment difficulty of the horizontal guide rail, vertical guide rail, spindle, and rotary table and reducing the adjustment time. At the same time, during the adjustment process, it is necessary to drive the slide plate to move on the horizontal guide rail, drive the spindle box to move on the vertical guide rail, and the spindle to move inside the spindle box, that is, dynamic adjustment rather than static adjustment is adopted. During the machining process of the workpiece, the horizontal guide rail, vertical guide rail, spindle, and rotary table will not generate displacement, and the geometric accuracy of the boring machine can be continuously maintained, thereby extending the adjustment cycle of the boring machine.

[0010] Optionally, the using a dial indicator to perform a pull-table inspection on the high-precision hexahedron to obtain inspection data, and adjusting the horizontal guide rail, the vertical guide rail, the spindle, and the rotary table according to the inspection data includes:

[0011] Driving the dial indicator to move left and right on the front surface of the high-precision hexahedron to obtain a first inspection value, driving the dial indicator to move vertically on the front surface of the high-precision hexahedron to obtain a second inspection value. When any one of the first inspection value and the second inspection value is greater than a first preset value, the vertical guide rail is adjusted until both the first inspection value and the second inspection value are less than or equal to the first preset value.

[0012] Optionally, the using a dial indicator to perform a pull-table inspection on the high-precision hexahedron to obtain inspection data, and adjusting the horizontal guide rail, the vertical guide rail, the spindle, and the rotary table according to the inspection data further includes:

[0013] Driving the dial indicator to move back and forth on the left surface of the high-precision hexahedron to obtain a third inspection value, driving the dial indicator to move vertically on the left surface of the high-precision hexahedron to obtain a fourth inspection value, driving the dial indicator to move back and forth on the right surface of the high-precision hexahedron to obtain a fifth inspection value, driving the dial indicator to move vertically on the right surface of the high-precision hexahedron to obtain a sixth inspection value. When any one of the third inspection value, the fourth inspection value, the fifth inspection value, and the sixth inspection value is greater than a first preset value, the spindle and the vertical guide rail are adjusted until both the first inspection value and the second inspection value are less than or equal to the first preset value.

[0014] Optionally, the step of using a dial indicator to perform a dial test on the high-precision hexahedron to obtain test data and adjusting the horizontal guide rail, the vertical guide rail, the main shaft, and the rotary table according to the test data further includes:

[0015] Driving the dial indicator to move back and forth on the upper surface of the high-precision hexahedron to obtain a seventh test value;

[0016] Driving the dial indicator to move left and right on the upper surface of the high-precision hexahedron to obtain an eighth test value;

[0017] When any one of the seventh test value and the eighth test value is greater than the first preset value, the main shaft and the horizontal guide rail are adjusted until both the seventh test value and the eighth test value are less than or equal to the first preset value.

[0018] Optionally, the first preset value is 0.02 mm.

[0019] Optionally, the step of using a dial indicator to perform a dial test on the high-precision hexahedron to obtain test data and adjusting the horizontal guide rail, the vertical guide rail, the main shaft, and the rotary table according to the test data further includes: after adjusting the vertical guide rail, the horizontal guide rail, and the main shaft respectively, rotating the rotary table by 180 degrees, using the dial indicator to perform a dial test on the high-precision hexahedron to obtain third test data, and adjusting the rotary table according to the third test data until the center line of the rotary table is parallel to the vertical guide rail.

[0020] Optionally, the step of rotating the rotary table, using the dial indicator to perform a dial test on the high-precision hexahedron to obtain third test data, and adjusting the rotary table includes: rotating the rotary table by 90 degrees and using the dial indicator to perform a dial test on the high-precision hexahedron to obtain second test data, and adjusting the rotary table according to the second test data until the center line of the rotary table is parallel to the vertical guide rail; continuing to rotate the rotary table by 90 degrees in the same direction and using the dial indicator to perform a dial test on the high-precision hexahedron to obtain third test data, and adjusting the rotary table according to the third test data until the center line of the rotary table is parallel to the vertical guide rail.

[0021] Optionally, the detection of the horizontal guide rail and the rotary table using a spirit level and the preliminary adjustment of the horizontal guide rail and the rotary table include: setting the spirit level on the horizontal guide rail; driving the slide plate to move from the left end of the horizontal guide rail to the right end of the horizontal guide rail, and performing a detection using the spirit level every time it slides a certain distance. When the slide plate moves to the right end of the horizontal guide rail, fourth detection data can be obtained; drawing a linear coordinate diagram based on the fourth detection data, and adjusting the horizontal guide rail according to the linear coordinate diagram.

[0022] Optionally, the detection of the horizontal guide rail and the rotary table using a spirit level and the preliminary adjustment of the horizontal guide rail and the rotary table further include: setting the spirit level on the rotary table; driving the spirit level to rotate on the rotary table, and performing a detection using the spirit level every time it rotates a certain angle. When the spirit level rotates 360 degrees, fifth detection data can be obtained. Drawing a rotary accuracy diagram based on the fifth detection data, and adjusting the rotary table according to the rotary accuracy diagram.

[0023] Optionally, the geometric accuracy adjustment method further includes: starting the feed shaft of the boring machine to release the stress in the horizontal guide rail and the vertical guide rail. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a boring machine to which the geometric accuracy adjustment method of the present invention is applied;

[0025] Figure 2 It is a flowchart of the geometric accuracy adjustment method of the present invention;

[0026] Figure 3 It is a usage state diagram of a high-precision hexahedron in the prior art based on the absolute horizontal value;

[0027] Figure 4 It is a usage state diagram of a high-precision hexahedron of the present invention based on the relative horizontal value;

[0028] Figure 5 It is a rotary accuracy diagram of the rotary table of the present invention.

[0029] Reference Signs:

[0030] 11. Main spindle bed; 12. Slide plate; 13. Column; 14. Spindle box; 15. Spindle; 21. Workbench bed; 22. Rotary table; 31. Dial indicator; 32. High-precision hexahedron; 33. Spirit level. Detailed Embodiment

[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0032] In this embodiment, an XYZ-axis coordinate system is established. The positive X direction is the front, the negative X direction is the rear, the positive Z direction is the left, the negative Z direction is the right, the positive Y direction is the upper, and the negative Y direction is the lower. The front side is the front side of the high-precision hexahedron 32, the left and right sides are the left and right sides of the high-precision hexahedron 32, and the upper surface is the upper surface of the high-precision hexahedron 32.

[0033] To solve the above problems, as Figures 1-4 shown, a geometric accuracy adjustment method according to an embodiment of the present invention is applied to a boring machine. The boring machine includes a main spindle bed 11, a horizontal guide rail, a slide plate 12, a column 13, a vertical guide rail, a main spindle box 14, a main spindle 15, a workbench bed 21, and a rotary worktable 22. The horizontal guide rail is provided on the main spindle bed 11, the slide plate 12 is slidably connected to the horizontal guide rail, the column 13 is vertically provided on the slide plate 12, the vertical guide rail is provided on the column 13, the main spindle box 14 is slidably connected to the vertical guide rail, the main spindle 15 is provided on the main spindle box 14, and the rotary worktable 22 is provided on the workbench bed 21, and includes:

[0034] Loosen the anchor bolts of the horizontal guide rail, the vertical guide rail, and the rotary worktable 22;

[0035] Use a spirit level 33 to detect the horizontal guide rail and the rotary worktable 22, and perform a preliminary adjustment on the horizontal guide rail and the rotary worktable 22;

[0036] Set a dial indicator 31 on the main spindle 15, and set a high-precision hexahedron 32 on the rotary worktable 22. Use the dial indicator 31 to perform a pull-table detection on the high-precision hexahedron 32 to obtain detection data, and adjust the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary worktable 22 according to the detection data until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the main spindle 15, the horizontal guide rail is parallel to the main spindle 15, and the rotation center of the rotary worktable 22 is parallel to the vertical guide rail;

[0037] Tighten the anchor bolts of the horizontal guide rail, the vertical guide rail, and the rotary worktable 22.

[0038] In this embodiment, the horizontal guide rail and the rotary table 22 are initially detected and adjusted. The horizontal guide rail is adjusted to be substantially straight and arranged on the main spindle bed 11, and the rotary table 22 is adjusted so that the center line of the rotary table 22 is substantially parallel to the vertical guide rail. Then, a dial indicator 31 is used to perform a dial indicator inspection on the high-precision hexahedron 32, and the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 are adjusted respectively. The horizontal guide rail and the vertical guide rail are adjusted to be perpendicular, the vertical guide rail and the main spindle 15 are adjusted to be perpendicular, the horizontal guide rail and the main spindle 15 are adjusted to be parallel, and the rotation center of the rotary table 22 is adjusted to be parallel to the vertical guide rail.

[0039] In summary, with the high-precision hexahedron 32 as a reference, a dial indicator inspection is performed on the high-precision hexahedron 32 using the dial indicator 31, and the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 are adjusted respectively until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the main spindle 15, the horizontal guide rail and the main spindle 15 are parallel, and the center line of the rotary table 22 is parallel to the vertical guide rail. Thus, based on the high-precision hexahedron 32, the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 are adjusted, that is, the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 are adjusted based on relative horizontal values rather than absolute horizontal values, reducing the adjustment difficulty of the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 and reducing the adjustment time. At the same time, during the adjustment process, it is necessary to drive the slide plate 12 to move on the horizontal guide rail, drive the main spindle box 14 to move on the vertical guide rail, and the main spindle 15 to move within the main spindle box 14, that is, dynamic adjustment rather than static adjustment is adopted. During the machining process of the workpiece, the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 will not be displaced, and the geometric accuracy of the boring machine can be continuously maintained, thereby extending the adjustment cycle of the boring machine.

[0040] Optionally, using the dial indicator 31 to perform a dial indicator inspection on the high-precision hexahedron 32 to obtain inspection data, and adjusting the horizontal guide rail, the vertical guide rail, the main spindle 15, and the rotary table 22 according to the inspection data includes:

[0041] Drive the dial indicator 31 to move left and right on the front surface of the high-precision hexahedron 32 to obtain a first inspection value, drive the dial indicator 31 to move vertically on the front surface of the high-precision hexahedron 32 to obtain a second inspection value. When any one of the first inspection value and the second inspection value is greater than a first preset value, the vertical guide rail is adjusted until both the first inspection value and the second inspection value are less than or equal to the first preset value.

[0042] In this embodiment, exemplarily, the driving slide plate 12 moves along the horizontal guide rail, driving the dial indicator 31 to move left and right on the front surface to obtain a first detection value. The driving slide plate 12 moves along the vertical guide rail, driving the dial indicator 31 to move vertically on the front surface to obtain a second detection value. When the first detection value is greater than a first preset value, it indicates that the vertical guide rail is not parallel to the YZ plane. When the second detection value is greater than a second preset value, it indicates that the vertical guide rail is not parallel to the XY plane. Thus, by adjusting the vertical guide rail until both the first detection value and the second detection value are less than or equal to the first preset value, it indicates that the vertical guide rail is parallel to both the YZ plane and the XY plane.

[0043] Optionally, using the dial indicator 31 to perform a dial indicator detection on the high-precision hexahedron 32 to obtain detection data, and adjusting the horizontal guide rail, the vertical guide rail, the main shaft 15, and the rotary table 22 according to the detection data further includes:

[0044] Driving the dial indicator 31 to move back and forth on the left side of the high-precision hexahedron 32 to obtain a third detection value, driving the dial indicator 31 to move vertically on the left side of the high-precision hexahedron 32 to obtain a fourth detection value, driving the dial indicator 31 to move back and forth on the right side of the high-precision hexahedron 32 to obtain a fifth detection value, driving the dial indicator 31 to move vertically on the right side of the high-precision hexahedron 32 to obtain a sixth detection value. When any one of the third detection value, the fourth detection value, the fifth detection value, and the sixth detection value is greater than the first preset value, the main shaft 15 and the vertical guide rail are adjusted until both the first detection value and the second detection value are less than or equal to the first preset value.

[0045] In this embodiment, exemplarily, the driving slide plate 12 moves along the horizontal guide rail, driving the dial indicator 31 to approach the left side, driving the main shaft 15 to move back and forth along the main shaft housing 14, driving the dial indicator 31 to move back and forth on the left side to obtain a third detection value, driving the main shaft housing 14 to move along the vertical guide rail, driving the dial indicator 31 to move vertically on the left side to obtain a fourth detection value. The driving slide plate 12 moves along the horizontal guide rail, driving the dial indicator 31 to approach the right side, driving the main shaft 15 to move back and forth along the main shaft housing 14, driving the dial indicator 31 to move back and forth on the right side to obtain a fifth detection value, driving the main shaft housing 14 to move along the vertical guide rail, driving the dial indicator 31 to move vertically on the right side to obtain a sixth detection value. When the third detection value and the fifth detection value are greater than the first preset value, it indicates that the main shaft 15 is not parallel to the XZ plane. When the fourth detection value and the sixth detection value are greater than the first preset value, it indicates that the vertical guide rail is not parallel to the XY plane. Thus, by adjusting the main shaft 15 and the vertical guide rail until both the third detection value, the fourth detection value, the fifth detection value, and the sixth detection value are less than or equal to the first preset value, it indicates that the main shaft 15 is parallel to the XZ plane and the vertical guide rail is parallel to the XY plane, and then the main shaft 15 is perpendicular to the vertical guide rail.

[0046] Optionally, a dial indicator 31 is used to perform a dial indicator inspection on the high-precision hexahedron 32 to obtain inspection data, and the horizontal guide rail, the vertical guide rail, the main shaft 15, and the rotary table 22 are adjusted according to the inspection data. This further includes:

[0047] Drive the dial indicator 31 to move back and forth on the upper surface of the high-precision hexahedron 32 to obtain a seventh inspection value;

[0048] Drive the dial indicator 31 to move left and right on the upper surface of the high-precision hexahedron 32 to obtain an eighth inspection value;

[0049] When any one of the seventh inspection value and the eighth inspection value is greater than a first preset value, the main shaft 15 and the horizontal guide rail are adjusted until both the seventh inspection value and the eighth inspection value are less than or equal to the first preset value.

[0050] In this embodiment, by way of example, the spindle headstock 14 is driven to move upward along the vertical guide rail until the dial indicator 31 abuts against the upper surface of the high-precision hexahedron 32; the main shaft 15 is driven to move relative to the spindle headstock 14 in the front-back direction, driving the dial indicator 31 to move from the front end to the rear end on the upper surface of the high-precision hexahedron 32 to obtain a seventh inspection value; the slide plate 12 is driven to move relative to the horizontal guide rail in the left-right direction, driving the dial indicator 31 to move from the left end to the right end on the upper surface of the high-precision hexahedron 32 to obtain an eighth inspection value. When the seventh inspection value is greater than the first preset value, it indicates that the main shaft 15 is not parallel to the upper surface of the high-precision hexahedron 32. When the eighth inspection value is greater than the second preset value, it indicates that the horizontal guide rail is not parallel to the upper surface of the high-precision hexahedron 32. Thus, by adjusting the main shaft 15 and the horizontal guide rail until both the seventh inspection value and the eighth inspection value are less than or equal to the second preset value, indicating that the main shaft 15 is parallel to the XZ plane and the horizontal guide rail is parallel to the XZ plane, relatively parallel main shaft 15 and horizontal guide rail can be obtained.

[0051] Optionally, the first preset value is 0.02 mm.

[0052] In this embodiment, setting the first preset value to 0.02 mm can improve the adjustment accuracy compared with the existing standard of 0.03 mm.

[0053] Optionally, a dial indicator 31 is used to perform a dial indicator inspection on the high-precision hexahedron 32 to obtain inspection data, and the horizontal guide rail, the vertical guide rail, the main shaft 15, and the rotary table 22 are adjusted according to the inspection data. This further includes: after adjusting the vertical guide rail, the horizontal guide rail, and the main shaft 15 respectively, the rotary table 22 is rotated 180 degrees, and the dial indicator 31 is used to perform a dial indicator inspection on the high-precision hexahedron 32 to obtain third inspection data, and the rotary table 22 is adjusted according to the third inspection data until the center line of the rotary table 22 is parallel to the vertical guide rail.

[0054] In this embodiment, exemplarily, the first to eighth detection values obtained from the first table-pulling detection are the first detection data. The third detection data represents the first to eighth detection values obtained by rotating the rotary table 22 by 180 degrees and then performing table-pulling detection on the front, left, right, and upper surfaces of the high-precision hexahedron 32 again. Since the horizontal guide rail, the main shaft 15, and the vertical guide rail have been adjusted respectively during the first table-pulling detection, that is, the horizontal guide rail, the main shaft 15, and the vertical guide rail are perpendicular to each other and are located within a three-axis coordinate system. When one of them is adjusted, it will affect other structures. Therefore, it is not appropriate to adjust the horizontal guide rail, the main shaft 15, and the vertical guide rail. By adjusting the rotary table 22, it can be ensured that the first to eighth detection values obtained from this table-pulling detection are all less than or equal to the first preset value, so that the center line of the rotary table 22 is parallel to the vertical guide rail, thereby ensuring the machining accuracy of the workpiece.

[0055] Optionally, rotate the rotary table 22, use the dial indicator 31 to perform table-pulling detection on the high-precision hexahedron 32, and obtain the third detection data. The adjustment of the rotary table 22 includes: rotating the rotary table 22 by 90 degrees, using the dial indicator 31 to perform table-pulling detection on the high-precision hexahedron 32, obtaining the second detection data, and adjusting the rotary table 22 according to the second detection data until the center line of the rotary table 22 is parallel to the vertical guide rail; continue to rotate the rotary table 22 by 90 degrees in the same direction, use the dial indicator 31 to perform table-pulling detection on the high-precision hexahedron 32, obtain the third detection data, and adjust the rotary table 22 according to the third detection data until the center line of the rotary table 22 is parallel to the vertical guide rail.

[0056] In this embodiment, exemplarily, the second detection data represents the first to eighth detection values obtained by rotating the rotary table 22 by 90 degrees and then performing table-pulling detection on the front, left, right, and upper surfaces of the high-precision hexahedron 32 again. First, rotate the rotary table 22 by 90 degrees, perform a table-pulling detection once, adjust the rotary table 22 once, then rotate the rotary table 22 by 90 degrees in the same direction, continue to perform a table-pulling detection once, and then adjust the rotary table 22 once. Thus, by first rotating the rotary table 22 by 90 degrees and then rotating it by 90 degrees in the same direction, and adjusting the rotary table 22 twice, the indexing accuracy of the rotary table 22 can be ensured, which is beneficial to improving the adjustment accuracy of the rotary table 22.

[0057] Optionally, a spirit level 33 is used to detect the horizontal guide rail and the rotary table 22, and preliminary adjustment of the horizontal guide rail and the rotary table 22 includes: setting the spirit level 33 on the horizontal guide rail; driving the slide plate 12 to move from the left end of the horizontal guide rail to the right end of the horizontal guide rail, and using the spirit level 33 to perform a detection every time it slides a certain distance. When the slide plate 12 moves to the right end of the horizontal guide rail, the fourth detection data can be obtained; a linear coordinate diagram is drawn based on the fourth detection data, and the horizontal guide rail is adjusted according to the linear coordinate diagram.

[0058] In this embodiment, exemplarily, when the horizontal guide rail is 10 m, the spirit level 33 is set on the horizontal guide rail, and the slide plate 12 is driven to move from the left end of the horizontal guide rail to the right end of the horizontal guide rail, and the spirit level 33 is used to perform a detection every time it slides 1000 mm. When the slide plate 12 moves to the right end of the horizontal guide rail, ten detection values can be obtained, which are the fourth detection data. A linear coordinate diagram is drawn based on the fourth detection data, and the change value between the ten detection values is obtained according to the linear coordinate diagram. When the change value between the ten detection values exceeds 0.01 - 0.02 mm / m, the horizontal guide rail is adjusted until the change value between the ten detection values is within 0.01 - 0.02 mm / m. At this time, the horizontal guide rail is generally linearly arranged on the main spindle bed 11, and its straightness meets the requirement of dial indicator detection, that is, only minor adjustment of the horizontal guide rail is required during the dial indicator detection process, which is convenient for reducing the adjustment difficulty. At the same time, an electron microscope can also be set on the slide plate 12 to cooperate with the spirit level 33 to synchronously detect the straightness of the horizontal guide rail. Among them, the change value of the electron microscope needs to be kept within 0.01 - 0.03 mm / m.

[0059] Optionally, as Figure 5 shown, using the spirit level 33 to detect the horizontal guide rail and the rotary table 22, and preliminary adjustment of the horizontal guide rail and the rotary table 22 further includes: setting the spirit level 33 on the rotary table 22; driving the spirit level 33 to rotate on the rotary table 22, and using the spirit level 33 to perform a detection every time it rotates a certain angle. When the spirit level 33 rotates 360 degrees, the fifth detection data can be obtained; a rotary accuracy diagram is drawn based on the fifth detection data, and the rotary table 22 is adjusted according to the rotary accuracy diagram.

[0060] In this embodiment, exemplarily, before the dial indicator test, the spirit level 33 is set on the rotary table 22. The spirit level 33 is rotated by 45 degrees and then tested once until it is rotated by 360 degrees, and eight test values can be obtained, which are the fifth test data. According to the fifth test data, a rotary accuracy graph is drawn, and the cumulative error value of the eight test values is calculated. When the cumulative error value is greater than 0.02 mm / m, the rotary table 22 needs to be adjusted until the cumulative error value is less than or equal to 0.02 mm / m. At this time, the rotary central axis of the rotary table 22 is substantially parallel to the vertical guide rail. Thus, by using the spirit level 33, the rotary central axis of the rotary table 22 is adjusted to a position substantially parallel to the vertical guide rail. During the dial indicator test of the high-precision hexahedron 32 using the dial indicator 31, only minor adjustments need to be made to the rotary table 22, which is convenient for reducing the adjustment difficulty.

[0061] Optionally, the geometric accuracy adjustment method further includes: starting the feed axis of the boring machine to release the stress in the horizontal guide rail and the vertical guide rail.

[0062] In this embodiment, before using the spirit level 33 for testing and the dial indicator test, by slowly starting the feed axes of the boring machine, the stress in the horizontal guide rail and the vertical guide rail is released. At the same time, pay attention to observing the operating current and operating state of the machine tool, and the operating current should be ensured to be between 5% and 8%. Thus, it is possible to avoid the release of stress in the horizontal guide rail and the vertical guide rail after adjustment and prevent it from affecting the adjustment accuracy of the horizontal guide rail and the vertical guide rail.

[0063] Optionally, the first test data, the second test data, the third test data, and the fourth test data are archived.

[0064] In this embodiment, after adjusting the horizontal guide rail, the vertical guide rail, the main shaft 15, and the rotary table 22, the first test data, the second test data, the third test data, the fourth test data, and the fifth test data are archived. Thus, when performing tests and adjustments next time, the current test data can be used as a basis to facilitate quick adjustment.

[0065] Optionally, the foundation bolts are pre-tightened with constant torque, and the dial indicator test can be performed again after pre-tightening, and minor treatment is performed on the parts with minor changes.

[0066] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A geometric accuracy adjustment method is applied to a boring machine. The boring machine includes a main spindle bed (11), a horizontal guide rail, a slide plate (12), a column (13), a vertical guide rail, a main spindle box (14), a main spindle (15), a workbench bed (21), and a rotary worktable (22). The horizontal guide rail is arranged on the main spindle bed (11), the slide plate (12) is slidably connected to the horizontal guide rail, the column (13) is vertically arranged on the slide plate (12), the vertical guide rail is arranged on the column (13), the main spindle box (14) is slidably connected to the vertical guide rail, the main spindle (15) is arranged on the main spindle box (14), and the rotary worktable (22) is arranged on the workbench bed (21). It is characterized in that, Including: Loosen the anchor bolts of the horizontal guide rail, the vertical guide rail and the rotary table (22); Use a level (33) to detect the horizontal guide rail and the rotary table (22), and make a preliminary adjustment to the horizontal guide rail and the rotary table (22); Set a dial indicator (31) on the main shaft (15), and set a high-precision hexahedron (32) on the rotary table (22). Use the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain test data, and adjust the horizontal guide rail, the vertical guide rail, the main shaft (15) and the rotary table (22) according to the test data until the horizontal guide rail is perpendicular to the vertical guide rail, the vertical guide rail is perpendicular to the main shaft (15), the horizontal guide rail is parallel to the main shaft (15), and the center line of the rotary table (22) is parallel to the vertical guide rail; Tighten the anchor bolts of the horizontal guide rail, the vertical guide rail and the rotary table (22); Among them, the step of using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain test data, and adjusting the horizontal guide rail, the vertical guide rail, the main shaft (15) and the rotary table (22) according to the test data includes: driving the dial indicator (31) to move left and right on the front surface of the high-precision hexahedron (32) to obtain a first test value, driving the dial indicator (31) to move vertically on the front surface of the high-precision hexahedron (32) to obtain a second test value. When any one of the first test value and the second test value is greater than a first preset value, adjust the vertical guide rail until both the first test value and the second test value are less than or equal to the first preset value; The step of using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain test data, and adjusting the horizontal guide rail, the vertical guide rail, the main shaft (15) and the rotary table (22) according to the test data further includes: driving the dial indicator (31) to move back and forth on the left surface of the high-precision hexahedron (32) to obtain a third test value, driving the dial indicator (31) to move vertically on the left surface of the high-precision hexahedron (32) to obtain a fourth test value, driving the dial indicator (31) to move back and forth on the right surface of the high-precision hexahedron (32) to obtain a fifth test value, driving the dial indicator (31) to move vertically on the right surface of the high-precision hexahedron (32) to obtain a sixth test value. When any one of the third test value, the fourth test value, the fifth test value and the sixth test value is greater than the first preset value, adjust the main shaft (15) and the vertical guide rail until both the first test value and the second test value are less than or equal to the first preset value; Using a dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain test data, and adjusting the horizontal guide rail, the vertical guide rail, the main shaft (15), and the rotary table (22) according to the test data further includes: driving the dial indicator (31) to move back and forth on the upper surface of the high-precision hexahedron (32) to obtain a seventh test value; driving the dial indicator (31) to move left and right on the upper surface of the high-precision hexahedron (32) to obtain an eighth test value; when any one of the seventh test value and the eighth test value is greater than the first preset value, adjusting the main shaft (15) and the horizontal guide rail until both the seventh test value and the eighth test value are less than or equal to the first preset value; Using a dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain test data, and adjusting the horizontal guide rail, the vertical guide rail, the main shaft (15), and the rotary table (22) according to the test data further includes: after adjusting the vertical guide rail, the horizontal guide rail, and the main shaft (15) respectively, rotating the rotary table (22) by 180 degrees, using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain third test data, and adjusting the rotary table (22) according to the third test data until the center line of the rotary table (22) is parallel to the vertical guide rail.

2. The geometric accuracy adjustment method according to claim 1, characterized in that The first preset value is 0.02 mm.

3. The geometric accuracy adjustment method according to claim 2, wherein Rotating the rotary table (22) by 180 degrees, using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain third test data, and adjusting the rotary table (22) includes: rotating the rotary table (22) by 90 degrees and using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain second test data, and adjusting the rotary table (22) according to the second test data until the center line of the rotary table (22) is parallel to the vertical guide rail; continuing to rotate the rotary table (22) by 90 degrees in the same direction and using the dial indicator (31) to perform a dial test on the high-precision hexahedron (32) to obtain third test data, and adjusting the rotary table (22) according to the third test data until the center line of the rotary table (22) is parallel to the vertical guide rail.

4. The geometric precision adjustment method according to claim 1, wherein The inspection of the horizontal guide rail and the rotary table (22) using the spirit level (33) and the preliminary adjustment of the horizontal guide rail and the rotary table (22) include: setting the spirit level (33) on the horizontal guide rail; driving the slide plate (12) to move from the left end of the horizontal guide rail to the right end of the horizontal guide rail, and performing an inspection using the spirit level (33) every time it slides a certain distance. When the slide plate (12) moves to the right end of the horizontal guide rail, the fourth inspection data can be obtained; drawing a linear coordinate diagram based on the fourth inspection data, and adjusting the horizontal guide rail according to the linear coordinate diagram.

5. The geometric accuracy adjustment method according to claim 4, wherein The inspection of the horizontal guide rail and the rotary table (22) using the spirit level (33) and the preliminary adjustment of the horizontal guide rail and the rotary table (22) further include: setting the spirit level (33) on the rotary table (22); driving the spirit level (33) to rotate on the rotary table (22), and performing an inspection using the spirit level (33) every time it rotates a certain angle. When the spirit level (33) rotates 360 degrees, the fifth inspection data can be obtained. Drawing a rotary accuracy diagram based on the fifth inspection data, and adjusting the rotary table (22) according to the rotary accuracy diagram.

6. The geometric accuracy adjustment method according to claim 1, characterized in that, It further includes: Starting the feed axis of the boring machine to release the stress in the horizontal guide rail and the vertical guide rail.

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