CN104729408A - Thin and long part assembling method - Google Patents

Abstract

The invention relates to a thin and long part assembling method. The thin and long part assembling method comprises the following steps of 1 forming position measuring holes TB4, TB5 and TB6 of a sample plate, 2 drilling three holes in a frame and using the three holes as reference holes TB1, TB2 and TB3 for establishing a reference coordinate system, 3 arranging tool balls on the holes TB1, TB2, TB3, TB4, TB5 and TB6, 4 actually measuring values of the tool balls to obtain the positions of the holes TB1, TB2 and TB3, utilizing laser tracker software to perform fitting on theoretical tool ball values and actually-measured values to obtain tool balls TB1, TB2 and TB3 and establishing a three-dimensional coordinate system with the tool balls TB1, TB2 and TB3 as references, 5 reading the actual positions of the measuring holes TB4, TB5 and TB6 through the tool balls and comparing the actual positions with theoretical positions after the coordinate system is established, adjusting the assembling position of the sample plate according to obtained difference values and finally meeting the assembling accuracy requirement. By means of the thin and long part assembling method, assembling accuracy can be improved, an assembling period can be shortened, manpower is decreased, and accordingly company's benefit is improved.

Description

A kind of assembly method of thin, thin, elongated workpieces

Technical field

The present invention relates to a kind of assembly method of thin, thin, elongated workpieces, belong to a kind of part locating method.

Background technology

The manufacturing theory worked in advance makes analog quantity transmit manufacture method, the method feature is that its efficiency of assembling is low, low precision, the two class assembly tools needed are more, the instruments such as such as one-level mounting plate, level meter, bent plate, dial gauge, thousand piecemeals, height gauge, square chest, need the quality of operating personnel higher, can skillfully use these instruments.Such as, in Fig. 1 and Fig. 2, the difficult point of the assembling of cramp for verifying and checking is as follows: 1) part to be positioned belongs to thin elongated part, is characterized in that pliability is relatively good, but its ratio of rigidity is poor, is easily out of shape, and needs to carry out intensity reinforcement to it; 2) assembly method traditionally goes to perform, and the assembly precision that the cycle of needs is very long and final is difficult to ensure.Follow-uply use equipment there are differences due to reviewer and assembly crewman, frock may being caused overproof when handing over inspection, just needing again to improve assembly precision to eliminate above-mentioned reason.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of assembly method of thin, thin, elongated workpieces, and the method not only can improve assembly precision, shortens assembly period, reduces labour, thus improves company's benefit.

For overcoming the above problems, concrete technical scheme of the present invention is as follows: a kind of assembly method of thin, thin, elongated workpieces, comprises the following steps:

1) utilize original 2 holes of model as datum hole and increase the position measurement hole of 1 hole as model newly, and being set to TB4, TB5 and TB6 respectively;

2) three on framework different positions drill three holes as setting up frame of reference datum hole by numerical control, and are set to TB1, TB2 and TB3 respectively;

3) lining is set on the hole of TB1-TB6, in lining, is provided with the instrument ball of laser tracker;

4) under theory state, TB1-TB6 is in the same coordinate system, and theoretical position relation is one to one, and is input in the processor of laser tracker by its theoretical position; Value simultaneously by measuring actual tool ball obtains the position of TB1-TB3, utilizes laser tracker software theoretical tool ball value and actual measurement to be obtained instrument ball TB1-TB3 and carries out matching, and foundation take TB1-TB3 as the three-dimensional system of coordinate of benchmark;

5) after the coordinate system set up, read the physical location of measured hole TB4-TB6 by instrument ball and be input in the processor of laser tracker, then physical location and theoretical position are compared, by the difference drawn, model rigging position is adjusted, finally reach and meet assembly precision.

This is thin, thin, the assembly method of elongated workpieces by increasing some auxiliary instrument measurement points, make turning of whole frock join precision and spatial relation presents in the form of data, reduce assembly difficulty, improve the assembly precision of frock, improve work efficiency.

Accompanying drawing explanation

Fig. 1 is the frock front view of assembling of original thin, thin, elongated workpieces.

Fig. 2 is the frock side view of assembling of original thin, thin, elongated workpieces

Fig. 3 is the front view of the assembling of thin, thin, elongated workpieces after improving.

Fig. 4 is the wiring layout in lining and instrument ball and hole.

Wherein 1-framework, 2-model, 3-bearing, 4-lining, 5-instrument ball.

Embodiment

As shown in Figure 3, a kind of assembly method of thin, thin, elongated workpieces, comprises the following steps:

1) utilize original 2 holes of model as datum hole and increase the position measurement hole of 1 hole as model newly, the hole of model and framework have relative position size 200 ± 0.1,118 ± 0.1,164.95 ± 0.1, and are set to TB4, TB5 and TB6 respectively;

2) three on framework different positions drill three holes as setting up frame of reference datum hole by numerical control, and are set to TB1, TB2 and TB3 respectively;

3) lining is set on the hole of TB1-TB6, in lining, is provided with the instrument ball of laser tracker, fitted by the ground of lining and the upper surface in hole, as shown in Figure 4, thus the upper surface at right angle setting in when ensure that instrument ball is installed and hole;

4) under theory state, TB1-TB6 is in the same coordinate system, and theoretical position relation is one to one, and is input in the processor of laser tracker by its theoretical position; Value simultaneously by measuring actual tool ball obtains the position of TB1-TB3, utilizes laser tracker software theoretical tool ball value and actual measurement to be obtained instrument ball TB1-TB3 and carries out matching, and foundation take TB1-TB3 as the three-dimensional system of coordinate of benchmark;

5) after the coordinate system set up, read the physical location of measured hole TB4-TB6 by instrument ball and be input in the processor of laser tracker, then physical location and theoretical position are compared, by the difference drawn, model rigging position is adjusted, finally reach and meet assembly precision.

The assembly method of thin, thin, the elongated workpieces of the application compared with prior art, has the following advantages:

1) the manufacturing accuracy portion changing rear frock by this kind of method dress originally improve ± 0.02mm, improve assembly precision;

2) original manufacturing cycle is about 15 days, and uses now new method only to need the time of 5 days, saves the manufacturing cycle of 2/3, greatly meets the demand that company's science and technology is produced;

3) human resources needed are few, save human cost, are 1/2 of method in advance;

In sum, this method can be applied to work part tooling needing temporarily add work minority drill jig hole, pilot hole and needs line.

Claims (1)

1. an assembly method for thin, thin, elongated workpieces, is characterized in that comprising the following steps:

1) utilize original 2 holes of model as datum hole and increase the position measurement hole of 1 hole as model newly, and being set to TB4, TB5 and TB6 respectively;

2) three on framework different positions drill three holes as setting up frame of reference datum hole by numerical control, and are set to TB1, TB2 and TB3 respectively;

3) lining is set on the hole of TB1-TB6, in lining, is provided with the instrument ball of laser tracker;

4) under theory state, TB1-TB6 is in the same coordinate system, and theoretical position relation is one to one, and is input in the processor of laser tracker by its theoretical position; Value simultaneously by measuring actual tool ball obtains the position of TB1-TB3, utilizes laser tracker software theoretical tool ball value and actual measurement to be obtained instrument ball TB1-TB3 and carries out matching, and foundation take TB1-TB3 as the three-dimensional system of coordinate of benchmark;

5) after the coordinate system set up, read the physical location of measured hole TB4-TB6 by instrument ball and be input in the processor of laser tracker, then physical location and theoretical position are compared, by the difference drawn, model rigging position is adjusted, finally reach and meet assembly precision.