CN107497905A

CN107497905A - Variable curvature part flange experimental provision

Info

Publication number: CN107497905A
Application number: CN201710713315.4A
Authority: CN
Inventors: 赵亦希; 詹杨; 朱宝行
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2017-12-22
Anticipated expiration: 2037-08-18
Also published as: CN107497905B

Abstract

A kind of variable curvature part flange experimental provision, including：Guide pillar, guide pin bushing, the upper connector set gradually, upper mould, flanging block, lower mould and lower connector, wherein：The upper surface of lower mould is provided with the guide pillar being arranged symmetrically, and the lower surface of upper mould is provided with guide pin bushing, and guide pin bushing is engaged with guide pillar makes upper mould and lower mould matched moulds, and drives upper mould to move up and down；The blank is located between flanging block and lower mould, and applies variable pressure-pad-force from flanging block to blank；Upper mould includes the cope plate and upper module being vertically connected with, and upper module is provided with upper mould insert；Lower mould includes the lower module being vertically connected with and lower template, lower module are provided with lower mould insert；One end of lower mould insert is fixed on lower module by three angular fixed parts, and the both sides of the other end are respectively equipped with blank fixed block, and blank is fixed between lower mould insert and flanging block；The present invention is reasonable in design, small volume, with strong points, simple to operate.

Description

Variable curvature part flange experimental provision

Technical field

The present invention relates to a kind of technology in flange experiment mould field, specifically a kind of variable curvature part flange experiment Device.

Background technology

Variable curvature sheet part part flanging process difficulty is big, is also easy to produce defect, therefore actually carrying out producing it in batches Before, it usually needs design mould is to flanging process parameter, mold shape is debugged, experimental verification, meets Forming Quality demand.

The content of the invention

The present invention is excessively complicated for prior art construction, the defects of being unsuitable for the processing of variable curvature part hemmer, A kind of variable curvature part flange experimental provision is proposed, by setting three angular fixed parts and blank to position between upper die and lower die Block, the blank positioning required in flange pilot scale study, control clearance between punch and die, pressure-pad-force, stamping press, drawing velocity can be realized Deng functions such as technological parameters, and mainly tested on tensile testing machine, it is not necessary to the support of large press, there is volume The advantages that small, with strong points, simple to operate.

The present invention is achieved by the following technical solutions：

The present invention includes：Guide pillar, guide pin bushing, the upper connector set gradually, upper mould, flanging block, lower mould and lower connector, its In：The upper surface of lower mould is provided with the guide pillar being arranged symmetrically, and the lower surface of upper mould is provided with guide pin bushing, and guide pin bushing is engaged with guide pillar makes upper mould With lower mould matched moulds, and upper mould is driven to move up and down；The blank is located between flanging block and lower mould, and applied from flanging block to blank Add variable pressure-pad-force.

Described upper mould includes：Upper mould insert, the cope plate and upper module being vertically connected with, wherein：Upper module is T-shaped knot Structure, horizontal component are fixedly connected with cope plate, and vertical portion is provided with secure fit face, and secure fit face is used to install mould edge Block.

The pad for adjusting clearance between punch and die is preferably provided between described secure fit face and upper mould insert.

Described lower mould includes：Lower mould insert, the lower module being vertically connected with and lower template, wherein：Lower module is convex shape Structure, lower mould insert are located at the center of top of lower module.

Described upper connector includes upper contiguous block and fixed thread annulus, wherein：Upper contiguous block connects with cope plate screw thread Connect, and fixed by fixed thread annulus.

Some pads are provided between described upper mould insert and secure fit face, to adjust upper module vertical portion with The gap of module upper surface.

One end of described lower mould insert is fixed on lower module by three angular fixed parts, and the both sides of the other end are respectively equipped with Blank locating piece.

Described blank is fixed between lower mould insert and flanging block, and diaphragm pressure is provided between blank and flanging block and is sensed Device.

Described upper mould insert and the edge of the non-working surface of lower mould insert are machined with chamfering, convenient for assembly.

Described lower template is provided with scotch, and scotch prevents with being in contact on the outside of the vertical portion of upper module Stress is outward-dipping when module is descending.

Described lower connector and upper contiguous block are respectively connected to tensile testing machine.

Described lower template is fixedly connected with lower connector.

Technique effect

Compared with prior art, the present invention is simple in construction, and open time is short, and expense is low, and processing, assembling, dismounting are all more It is convenient；Tested on tensile testing machine, small volume is in light weight, it is not necessary to the support of large press, limit small, security It is higher；And can accurately on the premise of modulation process parameter, using upper and lower mould insert, can conveniently change it is upper, The design of lower mould；

Brief description of the drawings

Fig. 1 is schematic structural view of the invention；

Fig. 2 is upper connector schematic diagram；

Fig. 3 is upper die structure schematic diagram；

In figure：A is stereogram；B is upward view；

Fig. 4 is lower die structure schematic diagram；

Fig. 5 is lower connector schematic diagram；

In figure：1 guide pillar, contiguous block, 3 fixed thread annulus, 4 cope plates, 5 horizontal components, 6 flanging blocks, 7 blanks, 8 on 2 Under three angular fixed parts, 9 lower modules, 10 blank locating pieces, 11 lower templates, 12 scotch, 13 guide pin bushings, 14 times mould dowel holes, 15 Mould insert, mould insert on 16,17 vertical portions, mould dowel hole, 19 times connectors, 20 pads on 18.

Embodiment

As shown in figure 1, the present embodiment includes：Guide pillar 1, guide pin bushing 13, the upper connector set gradually, upper mould, flanging block 6, Lower mould and lower connector 19, wherein：The upper surface of lower mould is provided with the guide pillar 1 being arranged symmetrically, and the lower surface of upper mould is provided with guide pin bushing 13, Guide pin bushing 13 is engaged with guide pillar 1 makes upper mould and lower mould matched moulds, and drives upper mould to move up and down；The blank 7 be located at flanging block 6 with Between lower mould, flanging block 6 is connected by hexagon socket head cap screw with lower mould, and is threaded into the distance controlling of lower mould to base by adjustment The pressure-pad-force that material 7 applies.

As shown in Figure 3 A and Figure 3 B, described upper mould includes：Upper mould insert 16, the cope plate 4 being vertically connected with and upper module, Wherein：Upper module is T-shaped structure, and horizontal component 5 is fixedly connected with cope plate 4, and vertical portion 17 is provided with secure fit face, Gu Determine mating surface to be used to install mould insert 16.

As shown in figure 4, described lower mould includes：Lower mould insert 15, the and of lower module 9 being vertically connected with by hexagon socket head cap screw Lower template 11, wherein：Lower module 9 is convex shape structure, and lower mould insert 15 is located at the center of top of lower module 9.

Described cope plate 4 and lower template 11 are rectangular configuration.

As shown in Fig. 2 described upper connector includes upper contiguous block 2 and fixed thread annulus 3, wherein：Upper contiguous block 2 with Cope plate 4 is threadedly coupled, and is fixed by fixed thread annulus 3.

The upper surface of described horizontal component 5 is provided with upper mould dowel hole 18, to be adapted to connection with cope plate 4, in guarantee Positioning between mould and cope plate 4.

Upper mould insert 16 is provided with described concave surface, upper mould insert 16 is replaceable, to test the effect for not being same as above mould design.

Described upper mould insert 16 is fixedly connected by hexagon socket head cap screw with the vertical portion 17 of upper module, upper mould insert 16 Some pads are provided between concave surface, to adjust the gap of upper module vertical portion 17 and the upper surface of lower module 9.

Described pad has plurality of specifications.

The both sides of described lower module 9 are provided with lower mould dowel hole 14, to be connected with lower template 11, ensure lower template 11 with Positioning between lower module 9.

One end of described lower mould insert 15 is fixed on lower module 9 by three angular fixed parts 8, the both sides difference of the other end Provided with blank locating piece 10, for limiting blank 7 in movement in the width direction, prevent blank 7 because of the movement in turn-up process And influence Forming Quality.

Described blank 7 is fixed between lower mould insert 15 and flanging block 6, prevents blank 7 from producing shifting in turn-up process It is dynamic.

Diaphragm pressure sensor is provided between described blank 7 and flanging block 6, it is solid with flanging block 6 to verify pressure-pad-force It is scheduled on the relation that hexagon socket head cap screw when on lower module 9 is threaded into distance.

Described upper mould insert 16 and the edge of the non-working surface of lower mould insert 15 are machined with chamfering, convenient for assembly.

Described lower template 11 is provided with scotch 12, scotch 12 and the bottom connection of the vertical portion 17 of upper module Touch, for ensureing the vertical position of upper mould, prevent mould because flange power is excessive and outward-dipping, send out the gap of mould and lower mould It is raw to change.

As shown in figure 5, described lower template 11 is fixedly connected with lower connector 19 by hexagon socket head cap screw, on only Template 4 can rotate adjustment mould direction, convenient for assembly.

In addition to upper mould dowel hole 18 and lower mould dowel hole 14, other screwed holes use different size in the present embodiment Interior corner bolt, to assemble mould.

Described lower connector 19 and upper contiguous block 2 is respectively connected to tensile testing machine.

The caused flange power in turn-up process is conllinear with upper mould for the power that described tensile testing machine applies, and reduces this reality Apply a Moment.

During operation, assemble mould as shown in Figure 1 first, upper die and lower die are then passed through into upper connector and lower connector 19 It is separately fixed on tensile testing machine, places blank 7, upper die and lower die is started press, entered by guide pillar 1 and the matched moulds of guide pin bushing 13 The corresponding flange experiment of row, replaces with mould insert 16 and corresponding pad according to experiment demand, flange, observation is carried out to blank 7 Its Forming Quality, to judge whether corresponding process parameters are reasonable.

Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference Mode local directed complete set is carried out to it, protection scope of the present invention is defined by claims and not by above-mentioned specific implementation institute Limit, each implementation in the range of it is by the constraint of the present invention.

Claims

A kind of 1. variable curvature part flange experimental provision, it is characterised in that including：Guide pillar, guide pin bushing, the upper connection set gradually Part, upper mould, flanging block, lower mould and lower connector, wherein：The upper surface of lower mould is provided with the guide pillar being arranged symmetrically, the following table of upper mould Face is provided with guide pin bushing, and guide pin bushing is engaged with guide pillar makes upper mould and lower mould matched moulds, and drives upper mould to move up and down；The blank is positioned at pressure Between side block and lower mould, and apply variable pressure-pad-force from flanging block to blank；

Described upper mould includes：Upper mould insert, the cope plate and upper module being vertically connected with, wherein：Upper module is T-shaped structure, Horizontal component is fixedly connected with cope plate, and vertical portion is provided with secure fit face, and secure fit face is used to install mould insert；

Described lower mould includes：Lower mould insert, the lower module being vertically connected with and lower template, wherein：Lower module is convex shape structure, Lower mould insert is located at the center of top of lower module.
2. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described upper connector includes upper Contiguous block and fixed thread annulus, wherein：Upper contiguous block is threadedly coupled with cope plate, and is fixed by fixed thread annulus.
3. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described upper mould insert and fixation Some pads for being used to adjust clearance between punch and die are provided between mating surface.
4. variable curvature part flange experimental provision according to claim 1, it is characterized in that, one end of described lower mould insert It is fixed on by three angular fixed parts on lower module, the both sides of the other end are respectively equipped with blank locating piece.
5. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described blank is fixed on lower mould Between insert and flanging block, diaphragm pressure sensor is provided between blank and flanging block.
6. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described lower mould insert and upper mould The edge of the non-working surface of insert is machined with chamfering.
7. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described lower template is provided with only Motion block, scotch prevent that stress is outward-dipping when upper module is descending with being in contact on the outside of the vertical portion of upper module.
8. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described lower connector and upper company Connect block and be respectively connected to tensile testing machine.
9. variable curvature part flange experimental provision according to claim 1, it is characterized in that, described lower template and lower connection Part is fixedly connected.