Method and system for adjusting position of drill plate of forming tool

Abstract

The invention discloses a forming tool drill plate position adjusting method and system. The forming tool drill plate position adjusting method comprises the following steps that firstly, a drill plate is preliminarily installed and fixed to a forming tool through a positioning pin and a bolt; (2) reference elements of the forming tool are measured through a laser tracker; (3) key measured elements of the drill plate are detected under the measurement coordinate system, a position deviation value is calculated, and the adjustment direction and the adjustment amount are determined; (4) reaming the positioning pin hole of the drill plate according to the adjusting direction and the adjusting amount; (5) the drill plate is reinstalled, grease is smeared on the outer wall of the positioning pin, a lining is arranged on the outer wall of the positioning pin in a sleeving mode, the positioning pin sleeved with the lining is installed in the expanded positioning pin hole, and an adhesive is poured into a gap between the lining and the positioning hole of the drill plate; the method has the beneficial effects that a measurement coordinate system is constructed through the laser tracker, the position deviation of the drill plate is quantified in a digital space, and the vector adjustment amount is calculated.

Description

Technical Field

[0001] The invention relates to a method and system for adjusting the position of a forming tool drilling template. Background Art

[0002] With the advancement of manufacturing technology, the requirements for tooling in parts manufacturing are getting higher and higher. Before machining, process holes need to be drilled on the parts. The drilling of process holes can be divided into machine drilling and manual drilling. Compared with machine drilling, manual drilling has the characteristics of simple operation, low cost and high efficiency.

[0003] The accuracy of the drill plate is crucial to the quality of manual drilling. The drill plate determines the positioning accuracy of machined parts, and ensuring the positional accuracy of the drill plate is crucial to the machining process. Changes in the position of the drill plate affect drilling quality. Adjusting the drill plate position is crucial. To address this issue, the present invention proposes a method and system for adjusting the position of a forming tool drill plate to address this issue. Summary of the Invention

[0004] The object of the present invention is to provide a method and system for adjusting the position of a forming tool drilling template to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for adjusting the position of a forming tool drilling template comprises the following steps: (Step 1): Preliminarily install and fix the drilling template on the forming tooling using positioning pins and bolts; (Step 2): Place the forming tool for assembling the drilling template on the inspection platform, measure the forming tool reference elements using a laser tracker, match the theoretical design values, and construct a high-precision measurement coordinate system; (Step 3): Detect key measured elements of the drilling template in the measurement coordinate system, calculate the position deviation value and determine the adjustment direction and adjustment amount; (Step 4): Expand the positioning pin holes of the drilling template according to the adjustment direction and adjustment amount; (Step 5): Reinstall the drill template and fine-tune it to the theoretical tolerance range. Apply grease to the outer wall of the locating pin and install a bushing. Install the locating pin with the bushing into the expanded locating pin hole. Pour adhesive into the gap between the bushing and the locating hole of the drill template. After curing, a rubber sleeve positioning structure is formed.

[0006] As an improvement of the above technical solution, the construction tolerance of the measurement coordinate system in step 2 is controlled within ±0.05 mm, and the measurement reference elements include the theoretical reference surface and the positioning pin hole on the forming tooling.

[0007] As an improvement of the above technical solution, the key measured elements in step 3 include the center coordinates of the positioning pin hole of the drilling template and the spatial angle of the reference plane, and the position deviation value is obtained by vector difference calculation in the three-dimensional coordinate system.

[0008] As an improvement of the above technical solution, the hole expansion process in step 4 adopts reaming or boring technology, and the hole diameter tolerance after expansion is H7 level.

[0009] As an improvement of the above technical solution, the adhesive in step 5 is an epoxy resin-based structural adhesive, the curing time is ≤24 hours, and the radial positioning accuracy of the rubber sleeve after curing is ≤0.02mm.

[0010] As an improvement of the above technical solution, step 5 further includes, before pouring the adhesive, opening an annular guide groove on the outer wall of the bushing to guide the adhesive to evenly fill the gap.

[0011] As an improvement to the above technical solution, the preliminary installation and fixation in step 1 needs to ensure that the drilling template has no vibration displacement during the adjustment process, and the bolt pre-tightening torque is 80%-90% of the theoretical value.

[0012] A forming tool drilling template position adjustment system, comprising: High-precision measurement module: Contains a laser tracker and coordinate system conversion software for building a measurement coordinate system; Deviation calculation module: outputs adjustment parameters based on spatial vector analysis of measured elements and theoretical data; Hole expansion actuator: controlled by adjustment parameters to machine the positioning pin hole; Rubber sleeve curing components: including grease coating device, bushing positioning fixture and adhesive quantitative injection equipment.

[0013] As an improvement to the above technical solution, the deviation calculation module is integrated into the industrial control computer and has a built-in tolerance adaptive algorithm, which can dynamically optimize the adjustment amount.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A laser tracker is used to construct a measurement coordinate system, quantify the position deviation of the drill template in a digital space, and calculate the vector adjustment amount. This solves the technical bottleneck of the traditional trial-and-error adjustment method, which is inefficient and relies on operator experience, and achieves micron-level precision and controllable adjustment. At the same time, a coordinated solution of reaming the positioning pin hole and composite positioning of the bushing and adhesive is adopted. The reaming provides adjustment allowance and eliminates the cumulative error of machining. The rubber sleeve positioning structure formed by the curing of the adhesive breaks through the inherent limitation of rigid positioning that cannot be adjusted. While maintaining the radial positioning accuracy, it gives the tooling the ability to be repeatedly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle; Figure 3 It is a structural schematic diagram of the molding tool of the present invention; Figure 4 A comparative schematic diagram of the drilling template and hole enlargement of the present invention; Figure 5 Schematic diagram for comparing the adjustment of the drilling template of the present invention.

[0016] In the figure: 10, forming tool; 20, drilling template; 21, positioning pin hole; 30, bolt; 40, positioning pin; 50, bushing; 60, adhesive. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0018] Example: like Figure 1-5 As shown, this embodiment proposes a method for adjusting the position of a forming tool drilling template, comprising the following steps: (Step 1): Preliminarily install and fix the drilling template 20 on the forming tool 10 using the positioning pins 40 and bolts 30; (Step 2): Place the forming tool 10 assembled with the drilling template 20 on the inspection platform, measure the reference elements of the forming tool 10 using a laser tracker, match the theoretical design values, and construct a high-precision measurement coordinate system; (Step 3): Detect key measured elements of the drilling template 20 in the measurement coordinate system, calculate the position deviation value and determine the adjustment direction and adjustment amount; (Step 4): Expand the positioning pin hole 21 of the drilling template 20 according to the adjustment direction and adjustment amount; (Step 5): Reinstall the drilling template 20 and fine-tune it to the theoretical tolerance range. Apply grease to the outer wall of the locating pin 40 and install the bushing 50. Install the locating pin 40 with the bushing 50 into the expanded locating pin hole 21. Pour adhesive 60 into the gap between the bushing 50 and the locating hole of the drilling template 20. After curing, the adhesive sleeve positioning structure is formed.

[0019] In this embodiment, a measurement coordinate system is constructed by a laser tracker, and the position deviation of the drilling template 20 is quantified in a digital space and the vector adjustment amount is calculated. This solves the technical bottleneck of the traditional trial-and-error adjustment method, which is low in efficiency and relies on operator experience, and achieves micron-level precision and controllable adjustment. At the same time, a coordinated solution of hole enlargement processing of the positioning pin hole 21 and composite positioning of the bushing 50 and adhesive 60 is adopted. The hole enlargement provides adjustment margin and eliminates the cumulative error of machining. The rubber sleeve positioning structure formed by the curing of the adhesive 60 breaks through the inherent limitation of rigid positioning that is non-adjustable. While maintaining the radial positioning accuracy, it gives the tooling the ability to be repeatedly adjusted.

[0020] Specifically, the construction tolerance of the measurement coordinate system in step 2 is controlled within ±0.05 mm, and the measurement reference elements include the theoretical reference surface and the positioning pin hole 21 on the forming tool 10 .

[0021] In this embodiment, by strictly controlling the construction tolerance of the measurement coordinate system within ±0.05mm and simultaneously selecting the theoretical reference plane and the positioning pin hole 21 on the forming tool 10 as composite reference elements, a breakthrough solution is achieved to the technical bottleneck of the accumulation of errors in the transfer of large tooling references.

[0022] Specifically, the key measured elements in step 3 include the center coordinates of the positioning pin hole 21 of the drilling template 20 and the reference plane space angle, and the position deviation value is obtained by vector difference calculation in a three-dimensional coordinate system.

[0023] In this embodiment, by synchronously measuring the center coordinates of the positioning hole and the spatial angle of the reference plane, and using a three-dimensional vector difference algorithm to calculate the position deviation value, the spatial six-degree-of-freedom deviation is creatively quantified into an executable adjustment parameter.

[0024] Specifically, the hole enlarging process in step 4 adopts reaming or boring technology, and the hole diameter tolerance after hole enlarging is H7 level.

[0025] Specifically, the adhesive 60 in step 5 is an epoxy resin-based structural adhesive, the curing time is ≤24 hours, and the radial positioning accuracy of the rubber sleeve after curing is ≤0.02 mm.

[0026] Specifically, the step 5 further includes, before pouring the adhesive 60 , forming an annular guide groove on the outer wall of the bushing 50 to guide the adhesive 60 to evenly fill the gap.

[0027] In this embodiment, the provided annular guide groove can facilitate the adhesive 60 to be fully filled in the gap, thereby improving the positioning accuracy of the rubber sleeve positioning structure.

[0028] Specifically, the preliminary installation and fixation in step 1 must ensure that the drilling template 20 has no vibration displacement during the adjustment process, and the pre-tightening torque of the bolt 30 is 80%-90% of the theoretical value.

[0029] A forming tool drilling template position adjustment system, comprising: High-precision measurement module: Contains a laser tracker and coordinate system conversion software for building a measurement coordinate system; Deviation calculation module: outputs adjustment parameters based on spatial vector analysis of measured elements and theoretical data; Hole expansion actuator: controlled by adjustment parameters to perform machining on the positioning pin hole 21; Rubber sleeve curing components: including grease coating device, bushing 50 positioning fixture and adhesive 60 quantitative injection equipment.

[0030] Specifically, the deviation calculation module is integrated into an industrial control computer and has a built-in tolerance adaptive algorithm, which can dynamically optimize the adjustment amount.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for adjusting the position of a forming tool drilling template, characterized in that: The following steps are involved: (Step 1): Preliminarily install and fix the drilling template (20) on the forming tool (10) through the positioning pins (40) and bolts (30); (Step 2): placing the forming tool (10) assembled with the drilling template (20) on the detection platform, measuring the reference elements of the forming tool (10) by a laser tracker, matching the theoretical design values ​​and constructing a high-precision measurement coordinate system; (Step 3): Detect key measured elements of the drilling template (20) in the measurement coordinate system, calculate the position deviation value and determine the adjustment direction and adjustment amount; (Step 4): Expand the positioning pin hole (21) of the drilling template (20) according to the adjustment direction and adjustment amount; (Step 5): Reinstall the drilling template (20), fine-tune it to the theoretical tolerance range, apply grease to the outer wall of the positioning pin (40) and install the bushing (50), install the positioning pin (40) with the bushing (50) into the expanded positioning pin hole (21), and pour adhesive (60) into the gap between the bushing (50) and the positioning hole of the drilling template (20). After curing, the adhesive sleeve positioning structure is formed.

2. A method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The construction tolerance of the measurement coordinate system in step 2 is controlled within ±0.05 mm, and the measurement reference elements include the theoretical reference surface and the positioning pin hole (21) on the forming tool (10).

3. The method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The key measured elements of step 3 include the center coordinates of the positioning pin hole (21) of the drilling template (20) and the reference plane space angle, and the position deviation value is obtained by vector difference calculation in the three-dimensional coordinate system.

4. A method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The hole enlarging process in step 4 adopts reaming or boring technology, and the hole diameter tolerance after enlarging is H7 level.

5. The method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The adhesive (60) in step 5 is an epoxy resin-based structural adhesive, the curing time is ≤24 hours, and the radial positioning accuracy of the rubber sleeve after curing is ≤0.02 mm.

6. A method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The step 5 further includes, before pouring the adhesive (60), opening an annular guide groove on the outer wall of the bushing (50) to guide the adhesive (60) to evenly fill the gap.

7. The method for adjusting the position of a forming tool drilling template according to claim 1, characterized in that: The preliminary installation and fixation in step 1 must ensure that the drilling template (20) has no vibration displacement during the adjustment process, and the pre-tightening torque of the bolt (30) is 80%-90% of the theoretical value.

8. A forming tool drilling template position adjustment system, applied to a forming tool drilling template position adjustment method according to any one of claims 1 to 7, characterized in that: include: High-precision measurement module: Contains a laser tracker and coordinate system conversion software for building a measurement coordinate system; Deviation calculation module: outputs adjustment parameters based on spatial vector analysis of measured elements and theoretical data; Hole enlarging actuator: controlled by adjustment parameters to perform machining on the positioning pin hole (21); Rubber sleeve curing assembly: including a grease coating device, a bushing (50) positioning fixture and an adhesive (60) quantitative injection device.

9. A forming tool drilling template position adjustment system according to claim 8, characterized in that: The deviation calculation module is integrated into the industrial control computer and has a built-in tolerance adaptive algorithm, which can dynamically optimize the adjustment amount.

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