Framework machining and clamping method

Abstract

The invention discloses a framework machining and clamping method, which relates to the technical field of framework machining and comprises the following steps: cleaning a framework and a workbench, adjusting the supporting height of each supporting pickaxe and mounting a guardrail device; the framework is hoisted on the workbench according to the indicated direction, and the X direction and the Y direction of the framework are adjusted, so that the framework descends to be supported on the supporting pickaxe; z-direction alignment: aligning lines at the two ends of the side beam of the framework are flush with the aligner tips respectively; y-direction alignment: aligning the center line of the end of each side beam of the framework with the aligner tip; performing X-direction alignment: respectively aligning the X center line of the side beam of the framework and the X center line of the cross beam of the framework with the aligner tip; if leveling and alignment cannot be realized, returning to the framework scribing process; respectively checking each center line and each alignment line; each supporting pickaxe and each auxiliary supporting mechanism support the framework and press a side beam of the framework; the framework is protected before being machined, and the surface of the working table and the surface of the framework are checked to be free of sundries. According to the invention, the production efficiency and the clamping precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of frame processing, in particular to a frame processing and clamping method. Background Art

[0002] In the existing frame processing, the Z direction of the frame is aligned by a high stylus, with the plane on the machine tool workbench as the reference. The stylus is very high. If there is a little inaccuracy or angle on the bottom surface, the deviation will be large. The larger the deviation, the lower the accuracy, which leads to low dimensional accuracy after the frame processing. In addition, the traditional alignment method requires workers to squat and operate, and it does not adopt ergonomic design. For alignment in the X and Y directions, a special stylus is installed on the machine tool spindle, and then the spindle is used to draw straight lines in the X and Y directions of the frame, and coincide with the original center line on the frame to determine the position. Due to the addition of the machine tool, this method is more cumbersome (it is necessary to install and remove the special stylus and operate the machine tool). This method takes about 2 hours to align the frame, with low clamping efficiency and low production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a frame processing and clamping method to solve the problems existing in the above-mentioned prior art, improve production efficiency and clamping accuracy, and ensure the dimensional accuracy of the frame after processing.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a frame processing and clamping method, comprising the following steps:

[0006] S1. Prepare the reverse tooling, clean the reference surfaces of the reverse tooling of the frame, and the workbench with multiple support picks installed, adjust the support height of each support pick, and then install the guardrail device on the workbench;

[0007] S2. Hoist the frame and hoist it onto the workbench, ensuring that the placement direction of the frame corresponds to the processing procedure and that the frame is located above the Z-axis support pick. After adjusting the X-axis and Y-axis of the frame, lower the frame until it is supported on the support pick.

[0008] S3. Alignment in the Z direction: adjust the height of the corresponding support pick, and make the alignment lines at both ends of the frame side beams flush with the tip of the aligner; Alignment in the Y direction: adjust the corresponding side top bolts, and make the end center lines of each side beam of the frame aligned with the tip of the aligner; Alignment in the X direction: adjust the corresponding side top bolts, and make the X center line of the side beam of the frame and the X center line of the cross beam of the frame aligned with the tip of the aligner; If alignment in the Z direction, alignment in the Y direction or alignment in the X direction cannot be achieved, return to the frame marking process;

[0009] S4. Check the alignment line, check each center line and each alignment line respectively;

[0010] S5. The frame is pressed so that each supporting pick and each auxiliary supporting mechanism support the frame and press the side beams of the frame;

[0011] S6. Protection and inspection before processing: Use protective bolts and protective plugs to protect the frame before processing, and check that there are no foreign objects on the work surface and frame surface.

[0012] Preferably, S1 includes:

[0013] S11. Clean the Y-direction reference surface, Z-direction reference surface, X-direction reference surface of the tooling on the reverse side of the frame, and the installation position of the X-direction reference device;

[0014] S12. Install each support pick on the workbench, and arrange the first support pick and the second support pick on the side of the workbench close to the chip conveyor, and the fourth support pick, the third support pick and the fifth support pick are arranged in sequence on the side of the workbench away from the chip conveyor, and then clean the workbench;

[0015] S13. Lower the fourth support pick and the fifth support pick, and make the first support pick, the second support pick and the third support pick all contact with the frame;

[0016] S14. The middle part of the workbench near the chip conveyor is a restricted area. A guardrail is installed on both sides of the restricted area. The positioning T-block at the bottom of the guardrail is slidably connected to the T-slot on the workbench near the chip conveyor, and the positioning T-block is locked in the T-slot by the locking screw.

[0017] Preferably, S2 includes:

[0018] S21. Use a crane to lift the frame to the top of the workbench and place the frame in a direction that corresponds to the processing procedure;

[0019] S22 slowly lowers the frame until the distance between the frame and the first support pick is 10mm;

[0020] S23. Adjust the frame along the X direction, and align both sides of the end plate of the frame with the jacking bolts respectively, and adjust the frame along the Y direction, and align the center line of the end of the frame with the Y-direction reference plane of the tooling;

[0021] S24. Lower the hook of the overhead crane, support the frame with the first supporting pick, the second supporting pick and the third supporting pick, and move the overhead crane to the storage area.

[0022] Preferably, the Z-direction alignment in S3 includes:

[0023] S3Z1. Place the back of the finder on the Z-direction reference plane of the end of the first side beam supported by the first support pick and the second support pick, respectively adjust the support heights of the first support pick and the second support pick, so that the alignment lines at both ends of the first side beam are above the tip of the finder, and a reserved spacing is provided between the alignment lines at both ends of the first side beam and the tip of the finder;

[0024] S3Z2. Place the back of the aligner on the Z-direction reference plane of the end of the second side beam supported by the third supporting pick, adjust the supporting height of the third supporting pick, and check whether the aligning lines at both ends of the second side beam are flush with the tip of the aligner. If the height difference at both ends of the second side beam can be adjusted to meet the requirements, proceed to the next process. If the height difference at both ends of the second side beam does not meet the requirements, return to the frame marking process.

[0025] Preferably, S3Z2 includes the following situations:

[0026] S3Z2a. If the height difference Δh of the alignment line at both ends of the second side beam is less than 0.5mm, adjust the support height of the third support pick, and make the alignment line at one end of the second side beam higher than the alignment tip 1 / 2Δh, and the alignment line at the other end of the second side beam lower than the alignment tip 1 / 2Δh;

[0027] S3Z2b. If the height difference Δh of the alignment line at both ends of the second side beam is between 0.5mm-1mm, adjust the alignment line at the diagonal end of the second side beam with an error to raise or lower 1 / 3Δh. After the adjustment is completed, adjust the height of the third support pick according to the method in S3Z2a;

[0028] S3Z2c. If the height difference Δh of the alignment lines at both ends of the second side beam is greater than 1mm, return to the frame marking process.

[0029] Preferably, the Y-direction alignment in S3 includes:

[0030] S3Y1. First, align the first side beam supported by the first supporting pick and the second supporting pick, attach the front of the aligner to the Y-direction reference surface of the tooling at one end of the first side beam, and place a protective plate between the end plate at one end of the first side beam and the side top bolt of the tooling. Use the adjustment rod to pass through the through hole of the side top bolt of the tooling, and drive the side top bolt of the tooling to rotate, so that one end of the center line of the first end on the first side beam is aligned with the tip of the aligner, and then manually tighten the side top bolt of the side beam. The adjustment method of the other end of the center line of the first end is the same;

[0031] S3Y2. Check the center line of the second end of the second side beam supported by the third supporting pick, attach the front side of the aligner to the Y-direction reference plane of the tooling at one end of the second side beam, and check whether one end of the center line of the second end is aligned with the tip of the aligner. The checking method for the other end of the center line of the second end is similar.

[0032] Preferably, S3Y2 includes the following situations:

[0033] S3Y2a. If |L-L1|≤0.2 or |L-L2|≤0.2, proceed to the next step, where L is the theoretical value of the vertical distance between the center line of the first end and the center line of the second end, L1 is the actual value of the vertical distance between the center line of the first end on the left and the center line of the second end, and L2 is the actual value of the vertical distance between the center line of the first end and the center line of the second end on the right;

[0034] S3Y2b. If |L-L1|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam so that the difference between the distance between the tip of the finder and the center line of the first end is L3=|L-L1| / 2; when |L-L2|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam so that the difference between the distance between the tip of the finder and the center line of the first end is L3=|L-L2| / 2; check the center line of the second end, and the method for adjusting the distance difference between the two ends of the center line of the second end and the tip of the finder is similar;

[0035] S3Y2c. If |L-L1|>1 or |L-L2|>1, return to the frame marking process.

[0036] Preferably, the X-direction alignment in S3 includes:

[0037] S3X1. Place the X-direction reference device in the T-slot in the middle of the workbench, and make the positioning key of the X-direction reference device enter the T-slot. The X-direction reference device is 70mm away from the side beam of the frame in the Y direction. Rotate the magnetic seat switch to make the X-direction reference device generate magnetism and adsorb on the workbench. Gently push the X-direction reference device along the Y direction. Use the front of the aligner to stick on the reference surface of the X-direction reference device, so that the aligner tip is aligned with the X-center line of the side beam. Put the protective plate between the end of the side beam top bolt and the frame. Adjust the side beam top bolts at both ends of the first side beam supported by the first support pick and the second support pick to align the X-center line of the frame with the aligner tip. Then rotate the X-direction reference device 180 degrees to confirm that the X-center line of the frame is aligned with the aligner tip.

[0038] S3X2. Check the X-centerline of the beam, place the X-reference device corresponding to the beam position of the frame in the T-slot in the middle of the workbench, and make the positioning key of the X-reference device enter the T-slot. The X-reference device is 70mm away from the inner wall of the frame beam in the Y direction. Rotate the magnetic seat switch to make the X-reference device magnetic and adsorbed on the workbench. Use the front of the aligner to stick to the reference surface of the X-reference device, align the aligner tip with the X-centerline of the beam, and check whether the error is within 0.2mm. Then rotate the X-reference device 180 degrees to ensure that the error between the X-centerline of the beam and the aligner tip is equal to the error between the aligner tip and the X-centerline of the beam before the X-reference device is rotated.

[0039] Preferably, S3X2 includes the following situations:

[0040] S3X2a. If the error between the side beam X centerline and the cross beam X centerline is within 0.2mm, proceed to the next process;

[0041] S3X2b. If the error between the side beam X-centerline and the cross beam X-centerline is between 0.2 and 0.8 mm, set the error value to L4, and adjust the side top bolt again so that one side of the finder tip is at the position of the positive direction error L4 / 2 of the side beam X-centerline, and one side is at the position of the negative direction error L4 / 2 of the side beam X-centerline, and one side of the finder tip is at the position of the positive direction error L4 / 2 of the cross beam X-centerline, and one side is at the position of the negative direction error L4 / 2 of the cross beam X-centerline;

[0042] S3X2c. If the error between the X-centerline of the side beam and the X-centerline of the cross beam exceeds 0.8mm, return to the frame marking process.

[0043] Preferably, S5 includes:

[0044] S51. First, use two sets of pressing plates to press the first side beam supported by the first supporting pick and the second supporting pick. Add a gasket between one end of the lower end surface of the pressing plate and the first side beam, and the two gaskets are coaxial with the first supporting pick and the second supporting pick, respectively. The other end of the lower end surface of the pressing plate is supported by the rear supporting pick, and the supporting height of the rear supporting pick is flush with the gasket. The pressing plate is set away from the processing position, and the fastening nut on the pressing plate is tightened to fix the pressing plate. The rear supporting pick and the pressing plate cannot exceed the position of the T-slot on the workbench;

[0045] S52. Press the dial gauges under both ends of the second side beam supported by the third supporting pick, adjust the two dial gauge pointers to zero, raise the fourth supporting pick and the fifth supporting pick so that the dial gauge pointers are at the designed positions, use a pressing plate to press the second side beam, add a gasket between the pressing plate and the second side beam, and press the fastening nut on the pressing plate to return the dial gauge pointer to zero;

[0046] S53. Tighten the side beam side top bolts at the first side beam end in X direction, the first side beam end in Y direction, the second side beam end in X direction and the second side beam end in Y direction to prevent the guard plate from loosening and all auxiliary support mechanisms from lifting the frame in Z direction by no more than 0.1mm.

[0047] Compared with the prior art, the present invention has achieved the following technical effects:

[0048] The frame processing and clamping method provided by the present invention cleans the reference surfaces of the tooling on the back side of the frame and the workbench with multiple supporting picks installed, adjusts the supporting height of each supporting pick, and then installs the guardrail device on the workbench to improve safety; hoists the frame on the workbench to ensure that the placement direction of the frame corresponds to the processing procedure, and the frame is located above the Z-direction supporting pick, and after adjusting the X-direction and Y-direction of the frame, the frame is lowered to be supported on the supporting pick, and through a three-point support method, while ensuring stable support for the frame, it is also convenient to realize the subsequent Z-direction alignment; Z-direction alignment, adjust the corresponding supporting pick height, and make the two end alignment lines of the frame side beams respectively flush with the aligner tip; Y-direction alignment, adjust the corresponding side top bolts, and make the end center lines of each side beam of the frame aligned with the aligner tip; X-direction alignment Alignment: adjust the corresponding side top bolts, and align the X-center line of the side beam of the frame and the X-center line of the cross beam of the frame with the tip of the aligner respectively. After the three-way alignment is completed, proceed to the subsequent process; if the Z-direction alignment, Y-direction alignment or X-direction alignment cannot be achieved, indicating that the marking error is large, then return to the frame marking process, re-mark the frame, and re-perform the above process after the marking is completed; alignment line verification: verify each center line and each alignment line respectively, and after the verification is qualified, the subsequent press-fitting process can be carried out; frame press-fitting: make each support pick and each auxiliary support mechanism support the frame, press the side beam of the frame, and realize the clamping of the frame to facilitate the subsequent processing process; pre-processing protection and inspection: use protective bolts and protective plugs to protect the frame before processing, and check that the work surface and the frame surface are free of debris. Through the above steps, quantitative regulations are given to the clamping alignment of the frame before processing, which greatly improves production efficiency, while improving the clamping accuracy and ensuring the dimensional accuracy of the frame after processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only 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.

[0050] Figure 1 Schematic diagram of the installation position of each supporting pickaxe in S1 of the present invention;

[0051] Figure 2 This is a schematic diagram of Z-direction alignment of one side of the frame in S3Z1 of the present invention;

[0052] Figure 3 Schematic diagram of the relative positions of the Z-direction alignment line and the Z-direction reference plane in S3Z1 of the present invention;

[0053] Figure 4It is a schematic diagram of Z-direction alignment of the other side of the frame S3Z2 of the present invention;

[0054] Figure 5 It is a schematic diagram of the Y-direction alignment of the frame in S3 of the present invention;

[0055] Figure 6 This is a schematic diagram of checking the X centerline of the frame in S3X1 of the present invention;

[0056] Figure 7 It is a schematic diagram of the X-direction reference device in S3X1 of the present invention when it is rotated 180 degrees;

[0057] Figure 8 This is a schematic diagram of checking the center line of the beam X in S3X2 of the present invention;

[0058] Fig. 9 This is a schematic diagram of the case where L1>L2 in S3X2 of the present invention;

[0059] Fig.10 It is a schematic diagram of checking the frame in the X direction and the Y direction in S4 of the present invention;

[0060] Fig.11 It is a schematic diagram of the Z-direction verification of the frame in S4 of the present invention;

[0061] Fig.12 Schematic diagram of the position of the Z-axis dial indicator in S5 of the present invention;

[0062] Fig.13 The schematic diagram of the positions of the Y-axis dial indicator and the X-axis dial indicator in S5 of the present invention;

[0063] In the figure: 1-workbench, 2-first supporting pick, 3-second supporting pick, 4-third supporting pick, 5-fourth supporting pick, 6-fifth supporting pick, 7-guardrail, 8-restricted area, 9-aligner, 10-Z-direction alignment line, 11-Z-direction reference plane, 12-frame, 13-side beam side top bolt, 14-first end center line, 15-second end center line, 16-side beam X-direction center line, 17-T-slot, 18-Y-direction reference plane, 19-X-direction reference device, 20-first side beam, 21-second side beam, 22-cross beam, 23-Z-direction dial indicator, 24-Y-direction dial indicator, 25-X-direction dial indicator. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] The purpose of the present invention is to provide a frame processing and clamping method to solve the problems existing in the prior art, improve production efficiency and clamping accuracy, and ensure the dimensional accuracy of the frame after processing.

[0066] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0067] like Figure 1-Figure 13 As shown, this embodiment provides a frame processing and clamping method, comprising the following steps:

[0068] S1. The reverse tooling is prepared, the reference surfaces of the reverse tooling of the frame 12, and the workbench 1 equipped with multiple support picks is cleaned up, and the support height of each support pick is adjusted, and then the guardrail device 1 is installed on the workbench to improve safety;

[0069] S2. Hoist the frame 12, hoist the frame 12 on the workbench 1, ensure that the placement direction of the frame 12 corresponds to the processing procedure, and make the frame 12 above the Z-direction support pick, which is the first support pick 2, the second support pick 3 and the third support pick 4. After adjusting the X-direction and Y-direction of the frame 12, the frame 12 is lowered to be supported on the first support pick 2, the second support pick 3 and the third support pick 4, and through the three-point support method, while ensuring the stable support of the frame 12, it is also convenient to realize the Z-direction alignment of the subsequent sequence;

[0070] S3. Alignment in Z direction, adjust the corresponding support pick height, and make the alignment lines at both ends of the side beams of the frame 12 flush with the tip of the aligner 9 respectively; Alignment in Y direction, adjust the corresponding side top bolts, and make the end center lines of each side beam of the frame 12 aligned with the tip of the aligner 9; Alignment in X direction, adjust the corresponding side top bolts, and make the X center line 16 of the side beam of the frame 12 and the X center line of the cross beam of the frame 12 aligned with the tip of the aligner 9 respectively. After the alignment in three directions is completed, the subsequent process is carried out; if the alignment in Z direction, Y direction or X direction cannot be achieved, indicating that the marking error is large, then return to the marking process of the frame 12, re-mark the frame 12, and re-carry out the above process after the marking is completed;

[0071] S4. Find the positive line for verification, such as Figure 10-11 As shown, each center line and each alignment line are checked respectively, and the subsequent press-fitting process can be carried out after the verification is qualified; specifically, the first end center line 14 and the second end center line 15 (that is, the Y-direction center line) formed by the side beam X center line 16 and the cross beam X center line, C, D, E, F, and the four Z-direction alignment lines 10 are checked by the alignment device 9, and the press-fitting can be carried out after the verification is qualified;

[0072] S5 frame 12 is pressed, so that each support pick and each auxiliary support mechanism are supported on the frame 12, the side beams of the frame 12 are pressed to achieve the card of the frame 12, so as to facilitate the subsequent processing steps;

[0073] S6. Protection and inspection before processing. Use protective bolts and protective plugs to protect the frame 12 before processing, including: air spring drain hole, differential pressure valve hole, horizontal stop threaded hole, etc. Check that there is no debris on the surface of the workbench 1 and the frame 12, and ensure that the tooling, tools, guardrails 7, etc. are placed in the designated area; fill in the self-inspection and mutual inspection records.

[0074] Through the above steps, this embodiment provides quantitative regulations for the clamping and alignment of the frame 12 before processing, which greatly improves the production efficiency, while improving the clamping accuracy and ensuring the dimensional accuracy of the frame 12 after processing.

[0075] As a specific embodiment, S1 includes: Figure 1 As shown,

[0076] S11. Clean the Y-direction reference surface 18, the Z-direction reference surface 11, the X-direction reference surface 19 of the tooling on the reverse side of the frame 12, and the installation position of the X-direction reference device 19 to ensure that the above positions are clean and free of dirt;

[0077] S12. Install each support pick on the workbench 1, and arrange the first support pick 2 and the second support pick 3 on the side of the workbench 1 close to the chip conveyor, and arrange the fourth support pick 5, the third support pick 4 and the fifth support pick 6 on the side of the workbench 1 away from the chip conveyor, and then clean the workbench 1;

[0078] S13. Lower the fourth support pick 5 and the fifth support pick 6, and make the first support pick 2, the second support pick 3 and the third support pick 4 all contact with the frame 12, so as to facilitate the alignment in the Z direction by supporting the frame 12 at three points through the first support pick 2, the second support pick 3 and the third support pick 4;

[0079] S14. The middle part of the workbench 1 near one end of the chip conveyor is a restricted area 8. Operators are strictly prohibited from entering the restricted area 8 during clamping to prevent accidental slipping and affecting the personal safety of the operator. A guardrail 7 is installed on both sides of the restricted area 8. The positioning T-block at the bottom of the guardrail 7 is slidably connected to the T-slot 17 on the workbench 1 near one end of the chip conveyor, and the positioning T-block is locked in the T-slot 17 by the locking screw to ensure that the guardrail 7 does not move in the left and right directions and does not shake in the front and back directions.

[0080] As a specific embodiment, S2 includes:

[0081] S21. Use a crane to lift the frame 12 to the top of the workbench 1, and place the frame 12 in a direction corresponding to the processing procedure;

[0082] S22. The frame 12 is slowly lowered until the distance between the frame 12 and the first supporting pick 2 is 10 mm. At the same time, since the supporting heights of the first supporting pick 2, the second supporting pick 3 and the third supporting pick 4 are flush, the distances between the frame 12 and the second supporting pick 3 and the third supporting pick 4 are 10 mm, so as to facilitate the position adjustment of the frame 12;

[0083] S23. Adjust the frame 12 in the X direction, and align the end plates of the frame 12 on both sides with the tightening bolts, adjust the frame 12 in the Y direction, and align the end center line of the frame 12 with the Y-direction reference plane 18;

[0084] S24. Lower the hook of the overhead crane, support the frame 12 through the first supporting pick 2, the second supporting pick 3 and the third supporting pick 4, and move the overhead crane to the storage area.

[0085] As a specific embodiment, the Z-direction alignment in S3 includes:

[0086] S3Z1. Figure 2 As shown, the reverse side of the alignment device 9 is placed on the Z-direction reference plane 11 at the end of the first side beam 20 supported by the first supporting pick 2 and the second supporting pick 3, and the supporting heights of the first supporting pick 2 and the second supporting pick 3 are adjusted respectively, as shown in FIG. Figure 3 As shown, the alignment lines at both ends of the first side beam 20 are both above the tip of the finder 9, and a reserved spacing is provided between the alignment lines at both ends of the first side beam 20 and the tip of the finder 9. Since each support pick is a threaded structure, when the support pick is used to support the frame 12, the pressing force applied by the frame 12 to the support pick will cause the thread gap to become smaller, thereby moving the position downward. The deformation of the frame 12 will also cause it to move downward during compression. Therefore, the alignment line is designed to be higher than the tip of the finder 9 by a certain value in advance, wherein the specific value of the reserved gap is preferably 0.3mm-0.4mm, and those skilled in the art can also make adaptive changes to the reserved spacing according to different frames 12;

[0087] S3Z2. Figure 4 As shown, place the back of the aligner 9 on the Z-direction reference plane 11 at the end of the second side beam 21 supported by the third supporting pick 4, adjust the supporting height of the third supporting pick 4, and check whether the alignment lines at both ends of the second side beam 21 are flush with the tip of the aligner 9. If the height difference at both ends of the second side beam 21 can be adjusted to meet the requirements, proceed to the next step. If the height difference at both ends of the second side beam 21 does not meet the requirements, return to the marking step of the frame 12.

[0088] As a specific embodiment, S3Z2 includes the following situations:

[0089] S3Z2a if the second side beam 21 at both ends of the alignment line height difference Δh is less than 0.5mm, adjust the support height of the third support pick 4, and the alignment line of the second side beam 21 at one end is higher than the straightener 9 tip 1 / 2Δh, and the alignment line of the second side beam 21 at the other end is lower than the straightener 9 tip 1 / 2Δh;

[0090] S3Z2b if the second side beam 21 at both ends of the alignment line height difference Δh between 0.5mm-1mm, then adjust the second side beam 21 in the error of the diagonal end of the alignment line raised or lowered 1 / 3Δh, after the adjustment is completed, and then adjust the height of the third support pick 4 according to the method in S3Z2a;

[0091] S3Z2c. If the height difference Δh of the alignment line at both ends of the second side beam 21 is greater than 1 mm, return to the marking process of the frame 12.

[0092] As a specific embodiment, Figure 5 As shown, the Y-direction alignment in S3 includes:

[0093] S3Y1. First, align the first side beam 20 supported by the first supporting pick 2 and the second supporting pick 3, attach the front side of the aligner 9 to the Y-direction reference surface 18 of the tooling at one end of the first side beam 20, and put the protective plate between the end plate at one end of the first side beam 20 and the side top bolt of the tooling, use the adjustment rod to pass through the through hole of the side top bolt of the tooling, and drive the side top bolt of the tooling to rotate, so that the first end center line 14 on the first side beam 20 is aligned with the tip of the aligner 9, and then manually tighten the side beam side top bolt 13. The adjustment method of the other end of the first end center line 14 is the same. At the same time, it is necessary to ensure that the protective plate between the end of the side top bolt of the tooling and the outer side of the side beam end plate is not loose;

[0094] S3Y2. Check the second end center line 15 of the second side beam 21 supported by the third supporting pick 4, attach the front side of the aligner 9 to the Y-direction reference surface 18 of the tooling at one end of the second side beam 21, and check whether one end of the second end center line 15 is aligned with the tip of the aligner 9. The other end of the second end center line 15 is checked in the same way.

[0095] As a specific embodiment, S3Y2 includes the following situations:

[0096] S3Y2a. If |L-L1|≤0.2 or |L-L2|≤0.2, proceed to the next step, wherein L is the theoretical value of the vertical distance between the center line 14 of the first end and the center line 15 of the second end, L1 is the actual value of the vertical distance between the center line 14 of the first end and the center line 15 of the second end located on the left, and L2 is the actual value of the vertical distance between the center line 14 of the first end and the center line 15 of the second end located on the right;

[0097] S3Y2b. If |L-L1|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam 20 so that the difference in distance between the tip of the finder 9 and the center line 14 of the first end is L3=|L-L1| / 2; when |L-L2|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam 20 so that the difference in distance between the tip of the finder 9 and the center line 14 of the first end is L3=|L-L2| / 2; check the center line 15 of the second end, and the adjustment method for the distance difference between the two ends of the center line 15 of the second end and the tip of the finder 9 is similar, and the difference between the center line 14 of the first end and the tip of the finder 9 is equal to the difference between the center line 15 of the second end and the tip of the finder 9, and the directions are symmetrical, that is, Figure 5 In the middle, points D and F are symmetrical, and points C and E are symmetrical;

[0098] S3Y2c. If |L-L1|>1 or |L-L2|>1, return to the frame 12 marking process;

[0099] Among them, L can be understood as the size given in the drawing, L1 and L2 are generated by the upper order marking in actual production, which has a certain deviation from the size given in the drawing. The units of L, L1 and L2 are all millimeters.

[0100] As a specific embodiment, the X-direction alignment in S3 includes:

[0101] S3X1. Place the X-direction reference device 19 in the T-slot 17 in the middle of the workbench 1, and make the positioning key of the X-direction reference device 19 enter the T-slot 17. The X-direction reference device 19 is 70mm away from the side beam of the frame 12 in the Y direction. There should be no debris on the contact surface. Rotate the magnetic seat switch to make the X-direction reference device 19 magnetic and adsorbed on the workbench 1. Push the X-direction reference device 19 gently along the Y direction. Use the front of the aligner 9 to stick it on the reference surface of the X-direction reference device 19, so that the tip of the aligner 9 is aligned with the position of the X-center line 16 of the side beam. Put the protective plate between the end of the side beam side top bolt 13 and the frame 12, adjust the side beam side top bolts 13 at both ends of the first side beam 20 supported by the first supporting pick 2 and the second supporting pick 3, so that the X-center line of the frame is aligned with the tip of the aligner 9, as shown in the figure. Figure 6 Then rotate the X-axis reference device 19 180 degrees to confirm that the X-axis centerline of the frame is aligned with the tip of the alignment device 9, as shown in FIG. Figure 7 As shown;

[0102] S3X2. Figure 8As shown, check the X center line of the beam, place the X-direction reference device 19 corresponding to the position of the beam 22 of the frame 12 in the T-slot 17 in the middle of the workbench 1, and make the positioning key of the X-direction reference device 19 enter the T-slot 17. The X-direction reference device 19 is 70mm away from the inner wall of the beam 22 of the frame 12 in the Y direction. There must be no debris on the contact surface. Rotate the magnetic seat switch to make the X-direction reference device 19 magnetic and adsorbed on the workbench 1. Use the front side of the aligner 9 to stick it on the reference surface of the X-direction reference device 19, align the tip of the aligner 9 with the X center line of the beam, and check whether the error is within 0.2mm, then rotate the X-direction reference device 19 180 degrees to ensure that the error between the X center line of the beam and the tip of the aligner 9 is equal to the error between the tip of the aligner 9 and the X center line of the beam before the X-direction reference device 19 is rotated.

[0103] As a specific embodiment, S3X2 includes the following situations:

[0104] S3X2a. If the error between the side beam X centerline 16 and the cross beam X centerline is within 0.2mm, proceed to the next step;

[0105] S3X2b. If the error between the side beam X-centerline 16 and the cross beam X-centerline is between 0.2 and 0.8 mm, set the error value to L4, and adjust the side top bolt again so that one side of the aligner 9 tip is at the position of the positive direction error L4 / 2 of the side beam X-centerline 16, and one side is at the position of the negative direction error L4 / 2 of the side beam X-centerline 16, and one side of the aligner 9 tip is at the position of the positive direction error L4 / 2 of the cross beam X-centerline, and one side is at the position of the negative direction error L4 / 2 of the cross beam X-centerline;

[0106] S3X2c If the side beam X centerline 16 and the beam X centerline error exceeds 0.8mm, then return to the frame 12 marking process;

[0107] This method must be used when the center line 14 of the first end is parallel to the center line 15 of the second end. If it is found in the early stage that the center line 14 of the first end is not parallel to the center line 15 of the second end and the error is within 1mm, and the error direction of the X-center line 16 of the side beam and the X-center line of the cross beam is the same as the error direction of the center line 14 of the first end and the center line 15 of the second end, it is necessary to readjust the Y direction of the frame 12 according to the center line 15 of the second end.

[0108] As a specific embodiment, Fig. 9 As shown, the X-center line of the cross beam is in the positive direction of the tip of the aligner 9, and the X-center line 16 of the side beam is in the negative direction of the tip of the aligner 9. If L1>L2, the Y direction of the frame 12 needs to be readjusted according to the center line 15 of the second end.

[0109] As a specific embodiment, S5 includes:

[0110] S51. First, use two sets of pressing plates to press the first side beam 20 supported by the first supporting pick 2 and the second supporting pick 3. A gasket is added between one end of the lower end surface of the pressing plate and the first side beam 20, and the two gaskets are coaxial with the first supporting pick 2 and the second supporting pick 3, respectively. The other end of the lower end surface of the pressing plate is supported by the rear supporting pick, and the supporting height of the rear supporting pick is flush with the gasket. The pressing plate is set away from the processing position, and the fastening nut on the pressing plate is tightened to fix the pressing plate. The rear supporting pick and the pressing plate cannot exceed the position of the T-slot on the workbench 1.

[0111] S52. Press the dial gauges under both ends of the second side beam 21 supported by the third supporting pick 4, adjust the two dial gauge pointers to zero, raise the fourth supporting pick 5 and the fifth supporting pick 6, so that the dial gauge pointers are in the designed position, which is preferably 0.35mm. The technicians in this field can also make adaptive adjustments to the designed position according to the actual needs of the frame 12, and then use the pressing plate to press the second side beam 21, and add a gasket between the pressing plate and the second side beam 21, and press the fastening nut on the pressing plate to return the dial gauge pointer to zero; the installation positions of the X-axis dial gauge 25, the Y-axis dial gauge 24 and the Z-axis dial gauge 23 are as shown in Figure 12-13 As shown;

[0112] S53. Tighten the side beam side top bolts 13 at the ends of the first side beam 20 in the X direction, the first side beam 20 in the Y direction, the second side beam 21 in the X direction and the second side beam 21 in the Y direction to prevent the protective plate from loosening and all auxiliary support mechanisms from lifting the frame 12 in the Z direction by no more than 0.1 mm.

[0113] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A frame processing and clamping method, characterized in that: The following steps are involved: S1. Prepare the reverse tooling, clean the reference surfaces of the reverse tooling of the frame, and the workbench with multiple support picks installed, adjust the support height of each support pick, and then install the guardrail device on the workbench; S2. Hoist the frame and hoist it onto the workbench, ensuring that the placement direction of the frame corresponds to the processing procedure and that the frame is located above the Z-axis support pick. After adjusting the X-axis and Y-axis of the frame, lower the frame until it is supported on the support pick. S3. Alignment in Z direction: adjust the height of the corresponding support pick, and make the alignment lines at both ends of the frame side beams flush with the tip of the aligner; Alignment in Y direction: adjust the corresponding side top bolts, and make the end center lines of each side beam of the frame aligned with the tip of the aligner; Alignment in X direction: adjust the corresponding side top bolts, and make the X center line of the side beam of the frame and the X center line of the cross beam of the frame aligned with the tip of the aligner; If the Z-direction alignment, Y-direction alignment or X-direction alignment cannot be achieved, return to the frame marking process; S4. Check the alignment line, check each center line and each alignment line respectively; S5. The frame is pressed so that each supporting pick and each auxiliary supporting mechanism support the frame and press the side beams of the frame; S6. Protection and inspection before processing: Use protective bolts and protective plugs to protect the frame before processing, and check that there are no foreign objects on the work surface and frame surface.

2. The frame processing and clamping method according to claim 1 is characterized in that: S1 includes: S11. Clean the Y-direction reference surface, Z-direction reference surface, X-direction reference surface of the tooling on the reverse side of the frame, and the installation position of the X-direction reference device; S12. Install each support pick on the workbench, and arrange the first support pick and the second support pick on the side of the workbench close to the chip conveyor, and the fourth support pick, the third support pick and the fifth support pick are arranged in sequence on the side of the workbench away from the chip conveyor, and then clean the workbench; S13. Lower the fourth support pick and the fifth support pick, and make the first support pick, the second support pick and the third support pick all contact with the frame; S14. The middle part of the workbench near the chip conveyor is a restricted area. A guardrail is installed on both sides of the restricted area. The positioning T-block at the bottom of the guardrail is slidably connected to the T-slot on the workbench near the chip conveyor, and the positioning T-block is locked in the T-slot by the locking screw.

3. The frame processing and clamping method according to claim 1, characterized in that: S2 includes: S21. Use a crane to lift the frame to the top of the workbench and place the frame in a direction that corresponds to the processing procedure; S22 slowly lowers the frame until the distance between the frame and the first support pick is 10mm; S23. Adjust the frame along the X direction, and align both sides of the end plate of the frame with the jacking bolts respectively, and adjust the frame along the Y direction, and align the center line of the end of the frame with the Y-direction reference plane of the tooling; S24. Lower the hook of the overhead crane, support the frame with the first supporting pick, the second supporting pick and the third supporting pick, and move the overhead crane to the storage area.

4. The frame processing and clamping method according to claim 1 is characterized in that: The Z-alignment in S3 includes: S3Z1. Place the back of the finder on the Z-direction reference plane of the end of the first side beam supported by the first support pick and the second support pick, respectively adjust the support heights of the first support pick and the second support pick, so that the alignment lines at both ends of the first side beam are above the tip of the finder, and a reserved spacing is provided between the alignment lines at both ends of the first side beam and the tip of the finder; S3Z2. Place the back of the aligner on the Z-direction reference plane of the end of the second side beam supported by the third supporting pick, adjust the supporting height of the third supporting pick, and check whether the aligning lines at both ends of the second side beam are flush with the tip of the aligner. If the height difference at both ends of the second side beam can be adjusted to meet the requirements, proceed to the next process. If the height difference at both ends of the second side beam does not meet the requirements, return to the frame marking process.

5. The frame processing and clamping method according to claim 4 is characterized in that: S3Z2 includes the following cases: S3Z2a. If the height difference Δh of the alignment line at both ends of the second side beam is less than 0.5mm, adjust the support height of the third support pick, and make the alignment line at one end of the second side beam higher than the alignment tip 1 / 2Δh, and the alignment line at the other end of the second side beam lower than the alignment tip 1 / 2Δh; S3Z2b. If the height difference Δh of the alignment line at both ends of the second side beam is between 0.5mm-1mm, adjust the alignment line at the diagonal end of the second side beam with an error to raise or lower 1 / 3Δh. After the adjustment is completed, adjust the height of the third support pick according to the method in S3Z2a; S3Z2c. If the height difference Δh of the alignment lines at both ends of the second side beam is greater than 1mm, return to the frame marking process.

6. The frame processing and clamping method according to claim 1, characterized in that: The Y-direction alignment in S3 includes: S3Y1. First, align the first side beam supported by the first supporting pick and the second supporting pick, attach the front of the aligner to the Y-direction reference surface of the tooling at one end of the first side beam, and place a protective plate between the end plate at one end of the first side beam and the side top bolt of the tooling. Use the adjustment rod to pass through the through hole of the side top bolt of the tooling, and drive the side top bolt of the tooling to rotate, so that one end of the center line of the first end on the first side beam is aligned with the tip of the aligner, and then manually tighten the side top bolt of the side beam. The adjustment method of the other end of the center line of the first end is the same; S3Y2. Check the center line of the second end of the second side beam supported by the third supporting pick, attach the front side of the aligner to the Y-direction reference plane of the tooling at one end of the second side beam, and check whether one end of the center line of the second end is aligned with the tip of the aligner. The checking method for the other end of the center line of the second end is similar.

7. The frame processing and clamping method according to claim 6, characterized in that: S3Y2 includes the following cases: S3Y2a. If |L-L1|≤0.2 or |L-L2|≤0.2, proceed to the next step, where L is the theoretical value of the vertical distance between the center line of the first end and the center line of the second end, L1 is the actual value of the vertical distance between the center line of the first end on the left and the center line of the second end, and L2 is the actual value of the vertical distance between the center line of the first end and the center line of the second end on the right; S3Y2b. If |L-L1|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam so that the difference between the distance between the tip of the finder and the center line of the first end is L3=|L-L1| / 2; when |L-L2|≥0.2, adjust the top bolts of the tooling side at both ends of the first side beam so that the difference between the distance between the tip of the finder and the center line of the first end is L3=|L-L2| / 2; check the center line of the second end, and the method for adjusting the distance difference between the two ends of the center line of the second end and the tip of the finder is similar; S3Y2c. If |L-L1|>1 or |L-L2|>1, return to the frame marking process.

8. The frame processing and clamping method according to claim 1, characterized in that: X-direction alignment in S3 includes: S3X1. Place the X-direction reference device in the T-slot in the middle of the workbench, and make the positioning key of the X-direction reference device enter the T-slot. The X-direction reference device is 70mm away from the side beam of the frame in the Y direction. Rotate the magnetic seat switch to make the X-direction reference device generate magnetism and adsorb on the workbench. Gently push the X-direction reference device along the Y direction. Use the front of the aligner to stick on the reference surface of the X-direction reference device, so that the aligner tip is aligned with the X-center line of the side beam. Put the protective plate between the end of the side beam top bolt and the frame. Adjust the side beam top bolts at both ends of the first side beam supported by the first support pick and the second support pick to align the X-center line of the frame with the aligner tip. Then rotate the X-direction reference device 180 degrees to confirm that the X-center line of the frame is aligned with the aligner tip. S3X2. Check the X-centerline of the beam, place the X-reference device corresponding to the beam position of the frame in the T-slot in the middle of the workbench, and make the positioning key of the X-reference device enter the T-slot. The X-reference device is 70mm away from the inner wall of the frame beam in the Y direction. Rotate the magnetic seat switch to make the X-reference device magnetic and adsorbed on the workbench. Use the front of the aligner to stick to the reference surface of the X-reference device, align the aligner tip with the X-centerline of the beam, and check whether the error is within 0.2mm. Then rotate the X-reference device 180 degrees to ensure that the error between the X-centerline of the beam and the aligner tip is equal to the error between the aligner tip and the X-centerline of the beam before the X-reference device is rotated.

9. The frame processing and clamping method according to claim 8, characterized in that: S3X2 includes the following cases: S3X2a. If the error between the X centerline of the side beam and the X centerline of the cross beam is within 0.2mm, proceed to the next process; S3X2b. If the error between the side beam X-centerline and the cross beam X-centerline is between 0.2 and 0.8 mm, set the error value to L4, and adjust the side top bolt again so that one side of the finder tip is at the position of the positive direction error L4 / 2 of the side beam X-centerline, and one side is at the position of the negative direction error L4 / 2 of the side beam X-centerline, and one side of the finder tip is at the position of the positive direction error L4 / 2 of the cross beam X-centerline, and one side is at the position of the negative direction error L4 / 2 of the cross beam X-centerline; S3X2c. If the error between the X-centerline of the side beam and the X-centerline of the cross beam exceeds 0.8mm, return to the frame marking process.

10. The frame processing and clamping method according to claim 1, characterized in that: S5 includes: S51. First, use two sets of pressing plates to press the first side beam supported by the first supporting pick and the second supporting pick. Add a gasket between one end of the lower end surface of the pressing plate and the first side beam, and the two gaskets are coaxial with the first supporting pick and the second supporting pick, respectively. The other end of the lower end surface of the pressing plate is supported by the rear supporting pick, and the supporting height of the rear supporting pick is flush with the gasket. The pressing plate is set away from the processing position, and the fastening nut on the pressing plate is tightened to fix the pressing plate. The rear supporting pick and the pressing plate cannot exceed the position of the T-slot on the workbench; S52. Press the dial gauges under both ends of the second side beam supported by the third supporting pick, adjust the two dial gauge pointers to zero, raise the fourth supporting pick and the fifth supporting pick so that the dial gauge pointers are at the designed positions, use a pressing plate to press the second side beam, add a gasket between the pressing plate and the second side beam, and press the fastening nut on the pressing plate to return the dial gauge pointer to zero; S53. Tighten the side beam side top bolts at the first side beam end in X direction, the first side beam end in Y direction, the second side beam end in X direction and the second side beam end in Y direction to prevent the guard plate from loosening and all auxiliary support mechanisms from lifting the frame in Z direction by no more than 0.1mm.

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