Method for measuring the multi-plane levelness of a press column

Abstract

The present application relates to the technical field of press column flatness adjustment, and discloses a kind of measurement method of press column multi-plane level, a reference line is drawn at the same height of adjacent two columns on the same side, and the reference line does not contact the column;First, the distance from the first guide plate surface outside the adjacent two columns to the reference line is adjusted to be consistent by using a measuring element, which is the first distance, and is set to zero, then the distance from the second guide plate surface of the middle two places to the reference line is measured, which is the second distance, and according to the positive and negative of the second distance minus the first distance, it is judged whether the corresponding position of the column is convex or concave;The reference line is set according to the principle of multiple horizontal and multiple vertical, and the distance is measured on both sides of any adjacent two columns, and the column level is judged according to the distance, and then the large column with deviation is fine-tuned;The distance from the different positions of the column to the reference line is measured by using the measuring line, the data is processed and compared, and the adjusted column meets the standard, and the problems such as the jamming of the movable cross beam do not occur.

Description

Technical Field

[0001] This invention relates to the field of press support flatness adjustment technology, and in particular to a method for measuring the multi-plane levelness of a press support. Background Technology

[0002] As a core forming equipment in metallurgy, machinery manufacturing, and automotive parts processing, presses are widely used in heavy-duty processing scenarios such as large-tonnage sheet metal stamping, forging, and powder metallurgy pressing due to their advantages of high load-bearing capacity, uniform force distribution, and high processing precision. The core working principle of this type of press is to achieve pressure forming of the workpiece through the reciprocating motion of the movable crossbeam along the support column. The support column, as the main guiding carrier of the movable crossbeam, directly determines the operational stability and processing quality of the press.

[0003] To ensure the straightness and positioning accuracy of the moving crossbeam, each support column of existing large presses is equipped with a high-precision guide plate. Through the sliding fit between the guide plate and the moving crossbeam, the moving crossbeam is kept horizontal during pressurization, avoiding deviations in workpiece machining accuracy due to force offset. However, in actual installation, commissioning, and long-term operation, the horizontality calibration of the support columns remains a key technical bottleneck restricting the reliability of press operation.

[0004] The supports of large presses are usually heavy components. Each support is heavy and has a wide installation span. When there is a level deviation between the supports, the guide plates on the supports will form a non-parallel guide trajectory. This causes the gap between the movable crossbeam and the guide plates of the four supports to be unevenly distributed during the up and down movement of the crossbeam. If the gap is too small, it will generate excessive frictional resistance. If the gap is too large, it cannot provide effective guidance and positioning. This will lead to the movable crossbeam moving stuck, making abnormal noises, and in severe cases, it may even jam, directly interrupting production. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method for measuring the levelness of multiple planes of a press support. This method utilizes measuring lines to measure the distance from different positions of the support to a baseline, processes and compares the data to determine the levelness of the support, and then fine-tunes the supports with large deviations to achieve the measurement and adjustment of the support levelness. The adjusted support meets the standards and will not cause problems such as the moving crossbeam getting stuck.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: A method for measuring the levelness of multiple planes of a press support includes the following steps: S1: After the support pillars are installed, a baseline is drawn at the same height on the same side of two adjacent support pillars, and the baseline does not touch the support pillars. S2: First, use the measuring device to adjust the distance from the first guide plate surface on the outer side of the two adjacent pillars to the baseline to be consistent. This is the first distance, and it is set as the zero point. Then, measure the distance from the second guide plate surface on the two middle points to the baseline. This is the second distance. Based on the positive or negative result of subtracting the first distance from the second distance, determine whether the corresponding position of the pillar is convex or concave. S3: The baseline is set on both sides of any two adjacent pillars according to the principle of multiple horizontal and vertical lines. The distance is measured and the levelness of the pillar is judged based on the distance. Then, the pillar with the larger deviation is fine-tuned.

[0007] As a further implementation, in S1, support rods are vertically welded to the opposite sides of two adjacent pillars, the baseline rests on the support rods, and counterweights are suspended at both ends of the baseline to keep it taut.

[0008] As a further implementation, each of the pillars has four sides, and each side has a guide plate surface at its vertical edge.

[0009] As a further implementation, the baseline is made of welding wire with hooks at both ends. After the two ends of the welding wire are attached to the support rod, the hanging hooks are connected to the counterweight.

[0010] As a further implementation method, the two adjacent pillars are arranged horizontally or vertically, and the baselines on the two adjacent pillars are arranged in two horizontal or two vertical directions. The four sets of pillars are arranged in two rows and two columns, with the baseline corresponding to a layout of four horizontal and four vertical lines.

[0011] As a further implementation, the distance between the guide plate surface and the baseline is measured using an inside micrometer. Each overlapping section of the baseline corresponds to four guide plate surfaces, with the two middle ones being the second guide plate surface and the two side ones being the first guide plate surface.

[0012] As a further implementation, if the second distance minus the first distance is negative, it indicates that the corresponding guide plate surface is in a convex state, and vice versa.

[0013] As a further implementation, if the second distance at the second guide plate surface on the same opposite side of the support column minus the first distance is one positive and one negative, it means that the corresponding support column needs to be adjusted in the specified direction. If both are positive or both are negative, it needs to be measured again.

[0014] As a further implementation method, for pillars with large deviations after subtracting the first distance from the second distance, jacks are used for fine-tuning. After fine-tuning, the same method is used to measure again until the installation standards are met.

[0015] As a further implementation, the support rods on each pillar can be at the same height or staggered.

[0016] The beneficial effects of the present invention are as follows: This invention utilizes measuring lines to measure the distance from different positions of a support column to a baseline. The data is processed and compared to determine the column's levelness. Fine-tuning of columns with large deviations allows for the measurement and adjustment of the column's levelness. Adjusted columns meet standards and do not experience problems such as jamming of movable crossbeams. This invention can measure not only the levelness of press supports but also the levelness of installation columns for other large equipment. The invention uses support rods to support the baseline, and the suspension configuration of the baseline ensures its tautness, guaranteeing accuracy in distance measurement. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the structural arrangement of the four pillars of the press in an embodiment of the present invention; Figure 2 This is a schematic diagram of the arrangement of the support pillars and the baseline in an embodiment of the present invention; Figure 3 This is a top view of the support pillar in an embodiment of the present invention.

[0019] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0020] Among them: 1. First pillar, 2. Second pillar, 3. Third pillar, 4. Fourth pillar; 5. First guide plate surface, 6. Second guide plate surface; 7. Support rod, 8. Baseline, 9. Counterweight; 11. First side, 12. Second side, 13. Third side, 14. Fourth side; 81. First baseline, 82. Second baseline, 83. Third baseline, 84. Fourth baseline. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Example 1 In a typical embodiment of the present invention, reference is made to Figures 1-3 As shown, a method for measuring the multi-plane levelness of press supports is described. This method is used to measure the levelness of installed press supports and further adjust their levelness accordingly to meet the required installation levelness standards. It is understood that the number of rows of supports is generally the same. This embodiment uses a large-tonnage three-beam four-support structure as an example for illustration. Figure 1 The four pillars shown are pillar 1, pillar 2, pillar 3, and pillar 4. Each pillar has four sides, and each side has a guide plate surface at its vertical edge. Each side has a first guide plate surface 5 and a second guide plate surface 6.

[0023] Specifically, the steps include the following: S1: After the support pillars are installed, a baseline is drawn at the same height on the same side of two adjacent support pillars. The baseline should not touch the support pillars.

[0024] In S1, when setting the baseline, support rods are vertically welded to the opposite sides of adjacent pillars. This allows the baseline to be placed on the support rods. The baseline uses 0.08mm stainless steel welding wire, which is high-strength and thin, facilitating accurate measurement.

[0025] The welding wire has hooks at both ends, such as Figure 2 As shown, after the baseline 8 is attached to the support rod, both ends hang downwards. After the two ends of the welding wire are attached to the support rod, the hanging hooks are connected to the counterweight 9, which is preferably a 5kg weight. Figure 2 In the process, the height of the two support rods 7 must be the same, and both must be welded to the side of the first support rod 1 and the second support rod 2 that are far apart from each other. Figure 2 In the middle, the support rod 7 is perpendicular to the front side of the first pillar 1 and the second pillar 2, and the baseline 8 is parallel to the front side.

[0026] The baseline is placed on the support rod, and counterweights 9 are suspended at both ends of the baseline to keep it taut. The tautness should be such that when the welding wire is lightly pressed by hand, it should not deform significantly.

[0027] Figure 2 In the process, after the baseline is set up, it is necessary to ensure that the baseline does not contact the front side of the support, and that the distance from the baseline to the first support is equal to the distance from the second support.

[0028] S2: First, use the measuring device to adjust the distance from the first guide plate surface on the outer side of the two adjacent pillars to the baseline to be consistent. This is the first distance, and it is set as the zero point. Then, measure the distance from the second guide plate surface on the two middle points to the baseline. This is the second distance. Based on the positive or negative result of subtracting the first distance from the second distance, determine whether the corresponding position of the pillar is convex or concave.

[0029] Setting a zero point facilitates subsequent measurements. An inside micrometer is used for measurement, measuring the distance between the guide plate surface and the baseline. The overlap section of each baseline (the part between the two support rods) corresponds to four guide plate surfaces. For example... Figure 2As shown, the two middle points are the second guide plate surfaces, and the two side points are the first guide plate surfaces. The first guide plate surfaces are close to the support rods. After setting up the baseline, first use an inside micrometer to measure the shortest distance from the two first guide plate surfaces to the baseline, which is the first distance. After measuring the two first distances, adjust them so that the two first distances are the same, for example, both are 'a', and set the first distance as zero.

[0030] Then measure the distance from the second guide plate surface at the two middle points to the baseline, denoted as the second distance b. Subtract the first distance a from the second distance b. The result, whether positive or negative, indicates whether the corresponding position of the support is convex or concave.

[0031] For example, if b is positive, it means that b is greater than a at the corresponding position, which means that the second guide plate surface is farther from the baseline and the second guide plate surface is concave (inward). If b minus a is negative, it means that the corresponding guide plate surface is convex (outward).

[0032] S3: The baseline is set on both sides of any two adjacent pillars according to the principle of multiple horizontal and vertical lines. The distance is measured and the levelness of the pillar is judged based on the distance. Then, the pillar with the larger deviation is fine-tuned.

[0033] like Figure 3 As shown, the baselines on adjacent pillars are arranged horizontally or vertically, with two horizontal or two vertical lines corresponding to the arrangement of the two pillars. For the four sets of pillars arranged in two rows and two columns in this embodiment, the baselines are arranged in four horizontal and four vertical lines.

[0034] Figure 3 In this system, the first reference line 81 is positioned on the front side of the first column 1 and the second column 2, and is used to measure the levelness of the front side (second side 12) of the first column 1 and the second column 2. Correspondingly, the second reference line 82 is used to measure the levelness of the rear side (fourth side 14) of the first column 1 and the second column 2, and the third reference line 83 is used to measure the levelness of the front side of the third column 3 and the fourth column 4. The fourth reference line 84 is used to measure the levelness of the rear side of the third column 3 and the fourth column 4. In addition, four longitudinal reference lines measure the levelness of the left side (first side 11) and right side (third side 13) of the four columns, respectively.

[0035] The first distance is zero, recorded as 0. When measuring the distance between the middle second guide plate surface and the baseline, record the value of the second distance b minus the first distance a. Figure 3 The data recorded is in millimeters. Figure 3 The number 0 in the middle represents the corresponding zero point position, and the other data represents the second distance minus the first distance at the second guide plate surface at the corresponding middle position.

[0036] If the second distance minus the first distance at the second guide plate surface on the same opposite side of the support column is one positive and one negative, it means that the corresponding support column needs to be adjusted in the specified direction. For the support column with a large deviation after subtracting the first distance from the second distance, use a jack to make a fine adjustment. After fine adjustment, measure again in the same way until the installation standard is met.

[0037] It should be noted that if both measurements are positive or both are negative, the measurement must be repeated. Figure 3 The data circled at the first support 1 and the second support 2 are abnormal. Assuming there are no issues with the dimensions of the supports themselves, the measurement may have been incorrect. Remeasurement is needed to resolve the issue of the same positive or negative sign.

[0038] It is understandable that the support rods on each pillar can be at the same height or staggered. In this embodiment, staggered support rods are preferred to prevent interference.

[0039] Taking into account the levelness of the four supports, supports with large deviations should be fine-tuned to ensure that the supports do not deflect, thereby affecting the installation accuracy of the equipment. The levelness of the adjusted supports should meet the installation standards.

[0040] The measurement method in this embodiment can not only measure the levelness of the press support column, but also the levelness of the installation columns of other large equipment.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for measuring the levelness of multiple planes of a press support, characterized in that, Includes the following steps: S1: After the support pillars are installed, a baseline is drawn at the same height on the same side of two adjacent support pillars, and the baseline does not touch the support pillars. S2: First, use the measuring device to adjust the distance from the first guide plate surface on the outer side of the two adjacent pillars to the baseline to be consistent. This is the first distance, and it is set as the zero point. Then, measure the distance from the second guide plate surface on the two middle points to the baseline. This is the second distance. Based on the positive or negative result of subtracting the first distance from the second distance, determine whether the corresponding position of the pillar is convex or concave. S3: The baseline is set on both sides of any two adjacent pillars according to the principle of multiple horizontal and vertical lines. The distance is measured and the levelness of the pillar is judged based on the distance. Then, the pillar with the larger deviation is fine-tuned.

2. The method for measuring the multi-plane levelness of a press support according to claim 1, characterized in that, In S1, support rods are vertically welded to the opposite sides of two adjacent pillars. The baseline rests on the support rods, and counterweights are suspended at both ends of the baseline to keep it taut.

3. The method for measuring the multi-plane levelness of a press support according to claim 1, characterized in that, Each of the pillars has four sides, and each side has a guide plate surface at its vertical edge.

4. The method for measuring the multi-plane levelness of a press support according to claim 2, characterized in that, The baseline is made of welding wire, with hooks at both ends. After the two ends of the welding wire are attached to the support rod, the hanging hooks are connected to the counterweight.

5. The method for measuring the multi-plane levelness of a press support according to claim 2, characterized in that, The arrangement of the baselines on the adjacent two pillars is either horizontal or vertical, and the corresponding arrangement is two horizontal or two vertical lines. The four sets of pillars are arranged in two rows and two columns, with the baseline corresponding to a layout of four horizontal and four vertical lines.

6. The method for measuring the multi-plane levelness of a press support according to claim 4, characterized in that, Use an inside micrometer to measure the distance between the guide plate surface and the baseline. Each overlap of the baseline corresponds to four guide plate surfaces, with the two in the middle being the second guide plate surface and the two on the sides being the first guide plate surface.

7. The method for measuring the multi-plane levelness of a press support according to claim 6, characterized in that, If the difference between the second distance and the first distance is negative, it indicates that the corresponding guide plate surface is in a raised state; otherwise, it is in a recessed state.

8. The method for measuring the multi-plane levelness of a press support according to claim 7, characterized in that, If the second distance minus the first distance at the second guide plate surface on the same opposite side of the support pillar is one positive and one negative, it means that the corresponding support pillar needs to be adjusted in the specified direction. If both are positive or both are negative, it needs to be measured again.

9. A method for measuring the multi-plane levelness of a press support according to claim 8, characterized in that, For supports with large deviations after subtracting the first distance from the second distance, use jacks for fine-tuning. After fine-tuning, measure again in the same way until the installation standard is met.

10. A method for measuring the multi-plane levelness of a press support according to claim 5, characterized in that, The support rods on each pillar can be at the same height or staggered.

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