A method for glue filling of positioning pins of flexible line with multiple worktables and multiple bases

Abstract

The present invention discloses a method for gluing positioning pins for flexible lines with multiple workbenches and multiple bases. First, the positioning accuracy is ensured by machining the positioning pin holes on the reference base, and the reference male pins are installed in the positioning pin holes with interference fit. Then, the positioning female pins of all workbenches are gluing on the reference base. Thereafter, one workbench is selected as the reference workbench, and the positioning male pins of all bases except the reference base are gluing on the reference workbench. The gluing method of the present invention is simple to operate, highly efficient, and has a wide range of applications. It can ensure the consistency of the dimensions of all workbenches and all bases in the X-axis and Y-axis directions. The consistency of the dimensions of the base and the workbench in the Z direction can be achieved by adjusting the feet of the base, and can be further ensured by the self-milling of the workbench by the machine tool. It is simple to operate and easy to implement, and can reduce the workload of installation and debugging. The gluing method of the present invention is conducive to reducing the dimensional consistency requirements for the processing of workbenches and bases, and reducing production costs.

Description

Technical Field

[0001] The invention belongs to the field of construction and installation of flexible production lines, and particularly relates to a method for gluing positioning pins of multiple workbenches and multiple bases of a flexible production line. Background Art

[0002] With the development of manufacturing industry and the advent of Industry 4.0, flexible production lines (flexible lines for short) are increasingly used in the processing industry due to their advantages such as high equipment utilization, relatively stable production capacity, high product quality, flexible operation and strong product adaptability.

[0003] Flexible lines have multiple main machines (machine tools) and multiple workbenches (movable pallets). It is necessary to ensure that any workbench placed on the base of any main machine has positioning accuracy and repeatability within a certain range. The workbench and base must be positioned with at least two pins on one side, and large workbenches may even use four pins on one side. Because multiple workbenches are interchangeable on multiple bases, ensuring the consistency of the dimensions between the locating pin holes, the form and position tolerances of the locating pin holes, and the workbench datum is difficult to achieve solely through machining. The usual practice is to attach the female pin on the workbench to the workbench through glue injection. Before glue injection, the female pin is initially fixed to the workbench with an adjustment screw. The female pin has a certain amount of position adjustment relative to the workbench. During glue injection, a glue injection fixture is set up, and the workbench is placed on the glue injection fixture. The workbench position is fine-tuned to ensure consistency in the X and Y axis dimensions. The female pin is tightened by tightening the adjustment screws, and finally, glue injection is performed. Consistency in the Z axis is ensured by the consistency of the base height dimensions and the thickness of the workbench.

[0004] When using the above-mentioned glue filling method, if there are many flexible line machine tools, the position and size of the positioning pin holes on the base of a single machine tool have higher precision requirements, and the position and size of the pin holes of all machine tool bases also have higher consistency requirements. These requirements are often difficult to take into account, and require more processing costs. At the same time, it is not economical to make a separate glue filling fixture as a tooling. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a flexible line multi-workbench and multi-base positioning pin glue pouring method with simple operation, high efficiency, low cost and wide application range, in response to the shortcomings of the existing technology. The method can ensure the consistency of the X-axis, Y-axis and Z-axis dimensions of all workbenches and all bases, which is conducive to reducing the dimensional consistency requirements for the processing of workbenches and bases.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a method for glue pouring positioning pins of a flexible line with multiple workbenches and multiple bases, the flexible line includes multiple workbenches and multiple bases, and the glue pouring method includes the following steps:

[0007] (1) Processing multiple positioning pin holes on multiple workbenches and multiple bases respectively;

[0008] (2) Select one base from the multiple bases as the reference base, install a reference male pin in each positioning pin hole on the reference base through interference fit, and then adjust the feet of all bases including the reference base to ensure that all bases are at the same height;

[0009] (3) Preliminarily fix the male positioning pin in each positioning pin hole on each base except the reference base by pulling screws, and preliminarily fix the female positioning pin in each positioning pin hole on each workbench by pulling screws;

[0010] (4) Place a workbench on the reference base, so that each positioning female pin on the workbench is preliminarily matched with the conical surface of the corresponding reference male pin on the reference base, unscrew the pull screws on each positioning female pin on the workbench, and then fine-tune the position of the workbench by pulling the table, so that the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the workbench are respectively parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the host, and finally tighten each positioning female pin on the workbench by tightening the screws, so that each positioning female pin on the workbench is completely matched with the conical surface of the corresponding reference male pin on the reference base, and finally glue each positioning female pin through the preset glue injection port on the workbench;

[0011] (5) Repeat step (4) to complete the glue filling of the positioning female pins on all workbenches;

[0012] (6) Select a workbench from the workbench where the positioning female pin has been glued as the reference workbench;

[0013] (7) Place the reference workbench on a base other than the reference base, so that each positioning male pin on the base is preliminarily matched with the conical surface of the corresponding positioning female pin on the reference workbench, unscrew the pull screws on each positioning male pin on the base, and then fine-tune the position of the base by pulling the table, so that the reference surface in the X-axis direction and the reference surface in the Y-axis direction of the base are parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the host respectively, and finally tighten each positioning male pin on the base by tightening the screws respectively, so that each positioning male pin on the base is completely matched with the conical surface of the corresponding positioning female pin on the reference workbench, and finally glue each positioning male pin through the preset glue injection port on the base;

[0014] (8) Repeat step (7) to complete the glue filling of the positioning pins on all bases except the reference base.

[0015] Preferably, in step (4) and step (5), after a workbench is placed on the reference base, a gauge is used around the upper surface of the workbench to detect the Z-direction dimensions around the workbench. If there is a deviation in the Z-direction dimensions around the workbench, after each positioning female pin on the workbench is glued, the machine tool directly performs self-milling processing on the workbench placed on the reference base until the Z-direction dimensions around the workbench meet the requirements, thereby ensuring the consistency of the Z-direction dimensions of all workbenches.

[0016] If the base after glue filling is selected as the reference base, it is difficult to ensure the consistency of the dimensions of all workbenches in the X-axis and Y-axis directions due to the uncertainty of the position of the positioning male pin during the first glue filling. Therefore, the present invention sets a base with an interference fit of the male pin as the reference base, so that the male pins on the reference base are respectively in relative center positions, which can ensure the position adjustment amount of the positioning female pin on the workbench, and then ensure the consistency of the dimensions of all workbenches in the X-axis and Y-axis directions, which is beneficial to reducing the dimensional consistency requirements for workbench processing. In addition, the positioning male pins on all bases except the reference base are in the form of glue filling on the reference workbench, which can ensure the consistency of the dimensions of all bases in the X-axis and Y-axis directions, which is beneficial to reducing the dimensional consistency requirements for base processing. As for the consistency of the Z-direction dimensions of the base and the workbench, it can be achieved by adjusting the base feet, and can be further guaranteed by the self-milling of the workbench by the machine tool. It is simple to operate and easy to implement, which can reduce the workload of installation and debugging.

[0017] Compared with the prior art, the present invention has the following advantages: the method for gluing the positioning pins of the flexible line multi-workbench multi-base of the present invention first ensures the position accuracy by processing the positioning pin holes on the reference base, and then installs the reference male pins in the positioning pin holes with interference fit, and then completes the gluing of the positioning female pins on all workbenches on the reference base. Thereafter, one workbench is selected from the workbenches that have completed the gluing of the positioning female pins as the reference workbench, and the gluing of the positioning male pins on all bases except the reference base is completed on the reference workbench. The gluing method of the present invention is simple to operate, highly efficient, and has a wide range of applications. It can ensure the consistency of the dimensions of all workbenches and all bases in the X-axis and Y-axis directions, and the consistency of the Z-axis dimensions of the base and the workbench can be achieved by adjusting the feet of the base, and can be further ensured by the self-milling of the workbench by the machine tool. It is simple to operate and easy to implement, and can reduce the workload of installation and debugging. The gluing method of the present invention is conducive to reducing the dimensional consistency requirements for the processing of workbenches and bases, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the appearance of the base in the embodiment;

[0019] Figure 2 Schematic diagram of the appearance of the workbench in the embodiment;

[0020] Figure 3 Schematic diagram of the effect of placing the workbench (or reference workbench) on the reference base (or base) in the embodiment;

[0021] Figure 4 Schematic diagram of the cooperation between the positioning female pin on the workbench and the reference male pin on the reference base after the workbench is placed on the reference base in the embodiment;

[0022] Figure 5 Schematic diagram of the cooperation between the positioning male pin on the base and the positioning female pin on the reference workbench after the reference workbench is placed on a base other than the reference base in the embodiment;

[0023] The specific reference numerals in the figures are as follows:

[0024] 1-workbench, 10-reference workbench, 11-reference groove in the X-axis direction of the workbench, 12-reference groove in the Y-axis direction of the workbench, 13-preset glue filling port on the workbench, 14-support surface on the upper surface of the workbench, 2-base, 20-reference base, 21-support surface of the base, 22-reference surface in the X-axis direction of the base, 23-reference surface in the Y-axis direction of the base, 24-preset glue filling port on the base, 31-reference male pin, 32-conical surface of the reference male pin, 41-pull screw, 42-tightening screw, 51-positioning male pin, 52-positioning female pin, 53-conical surface of the positioning female pin. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] Taking a flexible line including multiple workbenches with four pins on one side and multiple bases as an example, the steps of glue pouring using the method of the present invention are as follows:

[0027] (1) machining a plurality of positioning pin holes on a plurality of workbenches 1 and a plurality of bases 2 respectively;

[0028] (2) Select one base 2 from the plurality of bases 2 as the reference base 20, install a reference male pin 31 in each positioning pin hole on the reference base 20 through interference fit, and then adjust the feet of all bases 2 including the reference base 20. During the adjustment process, at least four points around the support surface 21 of the base 2 are selected to check the consistency of the height position by pulling the table to ensure that all bases 2 are of the same height;

[0029] (3) Preliminarily fix the positioning male pin 51 in each positioning pin hole on each base 2 except the reference base 20 by means of a pull screw 41, and preliminarily fix the positioning female pin 52 in each positioning pin hole on each workbench 1 by means of a pull screw 41;

[0030] (4) Place a workbench 1 on the reference base 20 so that each positioning female pin 52 on the workbench 1 is initially matched with the tapered surface 32 of the corresponding reference male pin 31 on the reference base 20. Figure 4 As shown, unscrew the pulling screw 41 on each positioning female pin 52 on the workbench 1, and then fine-tune the position of the workbench 1 by pulling the gauge, so that the reference groove 11 in the X-axis direction and the reference groove 12 in the Y-axis direction of the workbench 1 are parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the machine tool, respectively. Finally, tighten each positioning female pin 52 on the workbench 1 by tightening the screw 42, so that each positioning female pin 52 on the workbench 1 is fully matched with the tapered surface 32 of the corresponding reference male pin 31 on the reference base 20, and finally glue is poured into each positioning female pin 52 through the preset glue pouring port 13 on the workbench 1;

[0031] (5) Repeat step (4) to complete the glue filling of the positioning female pins 52 on all workbenches 1;

[0032] (6) Select one workbench 1 from the workbench 1 on which the positioning female pin 52 has been glued as the reference workbench 10;

[0033] (7) Place the reference workbench 10 on a base 2 other than the reference base 20, so that each positioning male pin 51 on the base 2 is preliminarily matched with the tapered surface 53 of the corresponding positioning female pin 52 on the reference workbench 10, as shown in FIG. Figure 5 As shown, unscrew the pull screw 41 on each positioning male pin 51 on the base 2, and then fine-tune the position of the base 2 by using a pull gauge so that the reference surface 22 in the X-axis direction and the reference surface 23 in the Y-axis direction of the base 2 are parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the machine tool, respectively. Finally, tighten each positioning male pin 51 on the base 2 by using a tightening screw 42 so that each positioning male pin 51 on the base 2 is fully matched with the tapered surface 53 of the corresponding positioning female pin 52 on the reference workbench 10. Finally, glue is poured into each positioning male pin 51 through the preset glue pouring port 24 on the base 2.

[0034] (8) Repeat step (7) to complete the glue filling of the positioning pins 51 on all bases 2 except the reference base 20.

[0035] In step (4) and step (5) of the above-mentioned glue filling method, after a workbench 1 is placed on the reference base 20, a gauge is used to check the Z-direction dimensions around the workbench 1 on the surrounding surface 14 of the upper surface of the workbench 1. If there is a deviation in the Z-direction dimensions around the workbench 1, after glue filling is completed for each positioning female pin 52 on the workbench 1, the machine tool directly performs self-milling processing on the workbench 1 placed on the reference base 20 until the Z-direction dimensions around the workbench 1 meet the requirements.

Claims

1. A method for glue filling of positioning pins of a flexible line with multiple workbenches and multiple bases, wherein the flexible line includes multiple workbenches and multiple bases, characterized in that: The glue pouring method comprises the following steps: (1) Processing multiple positioning pin holes on multiple workbenches and multiple bases respectively; (2) Select one base from the multiple bases as the reference base, install a reference male pin in each positioning pin hole on the reference base through interference fit, and then adjust the feet of all bases including the reference base to ensure that all bases are at the same height; (3) Preliminarily fix the male positioning pin in each positioning pin hole on each base except the reference base by pulling screws, and preliminarily fix the female positioning pin in each positioning pin hole on each workbench by pulling screws; (4) Place a workbench on the reference base, so that each positioning female pin on the workbench is preliminarily matched with the conical surface of the corresponding reference male pin on the reference base, unscrew the pull screws on each positioning female pin on the workbench, and then fine-tune the position of the workbench by pulling the table, so that the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the workbench are parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the machine tool, respectively. Finally, tighten each positioning female pin on the workbench by tightening the screws, so that each positioning female pin on the workbench is fully matched with the conical surface of the corresponding reference male pin on the reference base, and finally glue each positioning female pin through the preset glue injection port on the workbench; (5) Repeat step (4) to complete the glue filling of the positioning female pins on all workbenches; (6) Select a workbench from the workbench where the positioning female pin has been glued as the reference workbench; (7) Place the reference workbench on a base other than the reference base, so that each positioning male pin on the base is preliminarily matched with the conical surface of the corresponding positioning female pin on the reference workbench, unscrew the pull screws on each positioning male pin on the base, and then fine-tune the position of the base by pulling the table, so that the reference surface in the X-axis direction and the reference surface in the Y-axis direction of the base are parallel to the reference groove in the X-axis direction and the reference groove in the Y-axis direction of the machine tool respectively, and finally tighten each positioning male pin on the base by tightening the screws respectively, so that each positioning male pin on the base is completely matched with the conical surface of the corresponding positioning female pin on the reference workbench, and finally glue each positioning male pin through the preset glue injection port on the base; (8) Repeat step (7) to complete the glue filling of the positioning pins on all bases except the reference base.

2. A method for glue pouring on positioning pins of a flexible line with multiple workbenches and multiple bases according to claim 1, characterized in that: In steps (4) and (5), after a workbench is placed on the reference base, a gauge is used to check the Z-direction dimensions of the workbench around the upper surface of the workbench. If there is a deviation in the Z-direction dimensions of the workbench around the upper surface, after each positioning female pin on the workbench is glued, the machine tool directly performs self-milling processing on the workbench placed on the reference base until the Z-direction dimensions around the workbench meet the requirements.

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