CN108746296B

CN108746296B - A kind of production method of the net side punching press expansion woollen of threeway semicanal

Info

Publication number: CN108746296B
Application number: CN201810342768.5A
Authority: CN
Inventors: 倪兴屹; 李欢; 安红伟
Original assignee: Xian Aircraft Industry Group Co Ltd
Current assignee: Xian Aircraft Industry Group Co Ltd
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2019-08-20
Anticipated expiration: 2038-04-16
Also published as: CN108746296A

Abstract

A kind of production method of the net side punching press expansion woollen of threeway semicanal, the theoretical model of known half tube components of threeway, according to the theoretical model of half tube components of threeway, the net sideline of half tube components of threeway is marked on pressure testing part, and measures net the distance between sideline and process allowance line value on each mark line；Pressure testing, measurement, deburring are carried out to preceding pressure testing expansion woollen, until being overlapped the final pressure testing expansion sideline to form half tube components of threeway after the pressure testing expansion sideline forming of pressure testing expansion woollen with the net sideline of part；Woollen is unfolded with the net side of final pressure testing expansion sideline production threeway semicanal.

Description

A kind of production method of the net side punching press expansion woollen of threeway semicanal

Technical field

This application involves the manufacturing technology of aircraft complex metal plate sheet metal part, specifically a kind of plate threeway semicanal is accurately opened up The production method of wool opening material.

Background technique

In metal plate punching molding field, net side is stamping to be referred to and realizes that edge strikes out without surplus by predetermined expansion woollen Shape；It is widely used to containing air standard hole (HB0-14, HB0-16 etc.) production that based on plane or curved surface is relatively regular Product.For complicated three-dimensional sheet metal component due to shape of product asymmetry, caused stress and deformation distribution it is uneven, shaped Journey is difficult to overcome the problems, such as that pressure is inclined.Conventional method can only accomplish that optimised shape reduces the required woollen of forming at present, and forming process is still Need biggish trimming allowance；Especially it is bigger that woollen difficulty in computation is accurately unfolded in complicated half tube components of threeway of deformation.

The first patent ZL201410047901.6 of applicant compresses offer in the middle part of woollen using middle part roof pressing type mold Frictional force can largely alleviate the inclined problem of pressure.But still have the following deficiencies: first is that do not account for expansion woollen with The reliable location problem of mold；Second is that not accounting for the inclined influence of pressure of the pressing force size to forming；It therefore need to be there are after shaping Biggish trimming allowance.

The prior art is especially shaped by difficult cutting material to forming sheet metal part, is of large quantities, complex-shaped metal plate zero Part deburring the problem is that: first is that stereoscopic-state poor rigidity, mechanical system cutting is easily-deformable；Second is that manually cutting surplus opposite joint Precision is low, and mating interchangeability is poor, low efficiency；Third is that need the mating repair opposite joint of particular manufacturing craft that can meet welding precision requirement, Increase and develops input cost.

Summary of the invention

In order to overcome threeway semicanal because easily pressure need to shape partially with surplus, the cutting of stereoscopic-state difficulty, cutting accuracy are low after forming Difference, the defect of low efficiency etc., being designed to provide for the application are a kind of net suitable for roof pressing type mold in the middle part of threeway semicanal The production method that side shapes woollen solves the problems, such as that difficult cutting material threeway semicanal batch is quick, Accurate Shaping.

In order to give full play to the anti-bias technical advantage of middle part roof pressing type mould structure, the stamping effect in net side is realized, It is net as follows in punching press expansion woollen production implementation steps: the production method of punching press expansion woollen when a kind of threeway semicanal is net, it is known that The theoretical model of half tube components of threeway, it is characterised in that: 1) equal in three nozzle middle positions of threeway semicanal theoretical model Equipped with semicircle location hole, the process modeling of threeway semicanal is designed；2) by above-mentioned process modeling by the forming arc, right of threeway semicanal Tape edge deformation anterior-posterior length equal principle is unfolded, and theoretical expansion woollen is formed, and outer profile is theoretical expansion sideline；3) exist The outside predetermined process allowance line in theoretical expansion sideline corresponding to tape edge forms pressure testing and woollen is unfolded, and side is unfolded along theory Several mark lines vertical with process allowance line are equipped between line and process allowance line；4) above-mentioned pressure testing expansion woollen is led to Middle part roof pressing type mold is crossed to carry out stamping being threeway semicanal pressure testing part；5) according to the theoretical model of half tube components of threeway, The net sideline of half tube components of threeway is marked on pressure testing part, and is measured net between sideline and process allowance line on each mark line Distance value；6) according to this distance be worth amendment step 3) pressure testing be unfolded woollen profile, formed half tube components of threeway first time Sideline is unfolded in pressure testing；7) step 3) is repeated, reduces margin widths in the outside to tape edge corresponding first time pressure testing expansion sideline Predetermined process allowance line forms second of pressure testing and woollen is unfolded, and is unfolded between sideline and process allowance line along first time pressure testing Equipped with several mark lines vertical with process allowance line；8) step 4, step 5), step 6) are repeated by step 4) pressure parameter To a preceding pressure testing expansion woollen carry out pressure testing, measurement, deburring, until pressure testing expansion woollen pressure testing expansion sideline forming after with The net sideline of part is overlapped the final pressure testing expansion sideline to form half tube components of threeway；9) with final pressure testing expansion sideline production three Woollen is unfolded in the net side of logical semicanal.

The application beneficial effect is:

1, the application uses preresearch estimates combination die trial correction of the flank shape woollen manufacturing method, and there is no single theory calculating to ignore change Shape and friction complicated applied force factor influence pressure partially, and production applicability is high, and die trial workload is small.

2, the application is stamping using semicircle location hole and net side woollen, can alleviate to greatest extent sheet metal deformation and pull Cause to rupture, part punching yield rate and index of aging are high；Low to the requirement of plastic forming craftsmanship, machinable material is applicable in Range is wide.

Detailed description of the invention

The application is further illustrated with reference to the accompanying drawings and examples

Fig. 1 is the application theoretical model schematic diagram

Fig. 2 is the application process modeling schematic diagram

Fig. 3 is the application theory expansion woollen schematic diagram

Fig. 4 is the application pressure testing expansion woollen schematic diagram

Fig. 5 the application pressure testing part schematic diagram

Fig. 6 is the application pressure testing expansion woollen deburring schematic illustration

Explanation: 1. theoretical models, 2. process modelings, 3. theoretical expansion woollens, 4. pressure testings expansion woollen, 5. examinations are numbered in figure Casting die, 6. semicircle location holes, 7. forming arcs, 8 pairs of tape edges, 9 theoretical expansion sidelines, 10. process allowance lines, 11. mark lines, 12. Sideline is unfolded in net sideline, 13. pressure testings.

Specific embodiment

For the ease of the smooth implementation of technical scheme, it is described in detail with reference to the accompanying drawing.

Woollen design principle is unfolded in process modeling and pressure testing first

It is first equal in three nozzle middle positions of threeway semicanal theoretical model 1 referring to attached drawing 1, attached drawing 2, attached drawing 3, attached drawing 4 Equipped with semicircle location hole 6, the process modeling 2 of threeway semicanal is designed.Again by above-mentioned process modeling 2 by forming arc 7, to tape edge 8 Deformation anterior-posterior length equal principle is unfolded, and the outer profile for forming theoretical expansion woollen 3 is theoretical expansion sideline 9.Finally exist The outside predetermined process allowance line 10 in theoretical expansion sideline corresponding to tape edge 8, forms pressure testing and woollen 4 is unfolded, and along theoretical exhibition It opens and is equipped with several mark lines 11 vertical with process allowance line 10 between sideline 9 and process allowance line 10.

Secondly woollen deburring principle is unfolded in pressure testing

Referring to attached drawing 4, attached drawing 5, attached drawing 6, pressure testing expansion woollen 4 is positioned with semicircle location hole 6 first, is pressed by middle part Formula mold carries out stamping being threeway semicanal pressure testing part 5；According to the theoretical model 1 of threeway semicanal, 5 mark three on pressure testing part The net sideline 12 of logical half tube components, and measure the distance between net sideline 12 and process allowance line 10 on each mark line 11 Value.4 profile of woollen is unfolded further according to the modified pressure testing of the distance value, forms the first time pressure testing of threeway semicanal and sideline 13 is unfolded；With First time pressure testing is unfolded on the basis of sideline 13, and it is default in the outside to the corresponding pressure testing of tape edge 8 expansion sideline to reduce margin widths Process allowance line 10 forms second of pressure testing and woollen 4 is unfolded, and marks line 11 to second of pressure testing expansion woollen 4 again.Finally By the pressure parameter of first time pressure testing, preceding pressure testing expansion woollen 4 is carried out repeating pressure testing, measurement, deburring；Until pressure testing exhibition The pressure testing expansion sideline 13 of wool opening material 4 is overlapped the final pressure testing exhibition to form half tube components of threeway with the net sideline 12 of part after shaping Open sideline 13；Sideline 13 is unfolded as the net side of threeway semicanal using final pressure testing, woollen is unfolded.

Claims

1. a kind of production method of the net side punching press expansion woollen of threeway semicanal, it is known that the theoretical model of half tube components of threeway, it is special Sign is: 1) being equipped with semicircle location hole, design threeway half in three nozzle middle positions of half tube components theoretical model of threeway The process modeling of pipe；2) by above-mentioned process modeling by the forming arc of threeway semicanal, to tape edge deformation anterior-posterior length equal principle It is unfolded, forms theoretical expansion woollen, outer profile is theoretical expansion sideline；3) to the corresponding theoretical expansion sideline of tape edge Outside predetermined process allowance line, formed pressure testing be unfolded woollen, and if along theory expansion sideline and process allowance line between be equipped with The dry item mark line vertical with process allowance line；4) above-mentioned pressure testing expansion woollen is subjected to punching press by middle part roof pressing type mold It is configured to threeway semicanal pressure testing part；5) according to the theoretical model of half tube components of threeway, threeway semicanal zero is marked on pressure testing part The net sideline of part, and measure net the distance between sideline and process allowance line value on each mark line；6) it is worth according to this distance Amendment step 3) pressure testing be unfolded woollen profile, formed half tube components of threeway first time pressure testing be unfolded sideline；7) step is repeated 3) margin widths, are reduced in the outside predetermined process allowance line to tape edge corresponding first time pressure testing expansion sideline, form second Woollen is unfolded in secondary pressure testing, and is unfolded between sideline and process allowance line to hang down equipped with several with process allowance line along first time pressure testing Straight mark line；8) by step 4) pressure parameter repeat step 4), step 5), step 6), to a preceding pressure testing be unfolded woollen into Row pressure testing, measurement, deburring, until heavy with the net sideline of half tube components of threeway after the pressure testing expansion sideline forming of pressure testing expansion woollen Close the final pressure testing expansion sideline for forming half tube components of threeway；9) with the net side exhibition of final pressure testing expansion sideline production threeway semicanal Wool opening material.