CN104646466B - The complex bend forming technology of non-contour cross-rib like members - Google Patents
The complex bend forming technology of non-contour cross-rib like members Download PDFInfo
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- CN104646466B CN104646466B CN201510073575.0A CN201510073575A CN104646466B CN 104646466 B CN104646466 B CN 104646466B CN 201510073575 A CN201510073575 A CN 201510073575A CN 104646466 B CN104646466 B CN 104646466B
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Abstract
The complex bend forming technology of the non-contour cross-rib like members of a kind of material forming field, by first carrying out high muscle shaping successively, then carries out short muscle shaping again, avoids cross-rib intersection region thinning by two-step process successively.The present invention utilizes different slide block, jacking block, routing motion between punch and die to shape height muscle and intersection region thereof, it is possible to effectively solving traditional plastic forming technology for the deficiency that non-contour cross-rib like members exists, and plastic force is less, die life is high.
Description
Technical field
The present invention relates to the technology in a kind of material forming field, specifically the complex bend forming technology of a kind of non-contour cross-rib like members.
Background technology
Current under structure lightened and energy-saving and cost-reducing day by day urgent demand, many parts are designed to thin web plate and with interior muscle structure in length and breadth, to alleviate quality, but do not lose the functional of part.This band muscle film member kind is more, is widely used in the high-tech areas such as aviation, boats and ships, rocket.Different field is different to the requirement of part performance, and processing method and technique are also varied, but it is seriously thinning all to require that part can not occur.
Adopt traditional casting, welding procedure, stock utilization is low, processing cost is high and product poor mechanical property, although and adopt this kind of plastic deformation mode of drawing bulging combination process can improve mechanical property, but key position particularly cross-rib intersection region easily occurs seriously thinning, residual stress is also bigger, it is difficult to avoid folding, the wrinkling and defect such as break.Therefore, for above-mentioned deficiency, in the urgent need to a kind of novel forming technology.
Through the retrieval of prior art is found, by selecting bigger radius of corner and suitable pattern draft to be used for shaping cross-rib by isothermal forging method in document " gusset part muscle portion's filling principle and Study of Defects ".But this technology is compared with the present invention, its cannot the forming thickness thin-wall part lower than 1.5mm, and the shaping of complex geometric shapes cannot be completed at cross-rib place.
Summary of the invention
The present invention is directed to the existing deficiency thinning with muscle thin-film member forming technology key position, the complex bend forming technology of a kind of non-contour cross-rib like members is proposed, different slide block, jacking block, routing motion between punch and die is utilized to shape height muscle and intersection region thereof, can effectively solve traditional plastic forming technology for deficiency that non-contour cross-rib like members exists, and plastic force is less, die life is high.
The present invention is achieved by the following technical solutions:
The present invention relates to the complex bend forming technology of a kind of non-contour cross-rib like members, first carry out high muscle shaping successively, then carry out short muscle shaping again, avoid cross-rib intersection region thinning by two-step process successively.
Described high muscle shapes and refers to: high muscle punch moves upward and makes blank bend, will be located in the slide block of the blank left and right sides simultaneously and push down blank together with the high muscle die being positioned at blank top and to intermediary movements, thus promoting the blank of both sides to form high muscle toward middle movement.
Described short muscle shapes and includes:
Step one, the blank shaped by high muscle respectively arranges a jacking block in the high muscle both sides of the cross-rib intersection region that expection shapes after positioning, and drives jacking block move toward one another to contacting with high muscle, it is achieved the preform to the high muscle flattening shape of cross-rib crossover sites；
Step 2, will be located in the punch of blank upper and lower and be positioned at slide block and the die move toward one another simultaneously of blank left and right side, promote blank toward middle mobile, to avoid the local thickness that cross-rib intersection region developed area increases, both sides feed supplement deficiency causes thinning, be finally completed cross-rib and shape.
Metal material for ensureing cross-rib crossover sites occurs without fold defect, and two jacking blocks related in step one preferably diagonally go up direction move toward one another.
The present invention relates to the mould of the high muscle shaping stage realizing above-mentioned technique, including: high muscle punch and the oriented towards one another mechanism being arranged at high muscle punch both sides, wherein: the two ends of blank to be formed are fixedly installed in the oriented towards one another mechanism of both sides respectively, high muscle punch move upward while both sides oriented towards one another mechanism level to intermediary movements realize shape.
Described oriented towards one another mechanism includes: for clamping the die of blank to be formed and corresponding slide block.
The upper end geometry of described high muscle punch is consistent with the high muscle geometry of required shaping, by the high muscle of shaping that moves upward.
The present invention relates to the mould of the short muscle shaping stage realizing above-mentioned technique, including: upper and lower short muscle punch, the oriented towards one another mechanism being positioned at both sides being oppositely arranged and be arranged at the left and right jacking block within upper short muscle punch, wherein: the two ends of the blank that high muscle shapes are fixedly installed in the oriented towards one another mechanism of both sides respectively, upper and lower short muscle punch oriented towards one another mechanism level of both sides while vertical direction move toward one another realizes shaping to intermediary movements.
Under described, the upper end geometry of short muscle punch is consistent with the short muscle geometry of required shaping, by the short muscle of shaping that moves upward.
The lower end geometry of described upper short muscle punch is reverse V-shaped structure and both sides chamfering, and described left and right jacking block is arranged in v-shaped cavity.
Described upper short muscle punch moves downward, and under cooperation, short muscle punch moves upward so that high muscle and short muscle shape required form at infall.
Described oriented towards one another mechanism includes: for clamping the die of blank to be formed and corresponding slide block, wherein: the upper end profile of die is consistent with the upper profile of the blank that high muscle shapes, the lower profile of slide block is consistent with the lower profile of the blank that high muscle shapes, and thereby may be ensured that blank moves inward under the die common pressuring action with slide block.
Technique effect
Compared with prior art, the present invention utilizes the action between slide block, jacking block, punch and die to coordinate, and makes blank do material flowing to the region that local large deformation occurs and supplements, seriously thinning to avoid plate local thickness to occur.From the first stage height muscle thickness after forming field distribution that Fig. 4 provides, there is not obvious thickness thinning phenomenon in high muscle shaped region.The second stage step one provided respectively by Fig. 7 and Fig. 8 and step 2 complete after thickness field it can be seen that be all absent from the serious thinning phenomenon in significantly local, and the geometry of the cross-rib crossover sites after shaping is basically identical with target part.Therefore, the present invention can effectively solve traditional plastic forming technology for the deficiency that non-contour cross-rib like members exists, and plastic force is less, and die life is high.
Accompanying drawing explanation
Fig. 1 is the front signal of non-contour cross rib.
Fig. 2 is the reverse side signal of non-contour cross rib.
Fig. 3 is the mould structure schematic diagram of high muscle shaping stage.
Fig. 4 is the thickness field distribution after high muscle has shaped.
Fig. 5 is the mould structure schematic diagram of short muscle shaping stage.
Fig. 6 is the schematic diagram after short muscle shaping stage removes punch and matrix and slide block
Fig. 7 is the thickness field distribution after short muscle shaping stage step one completes.
Fig. 8 is the thickness field distribution after short muscle shaping stage step 2 completes.
Detailed description of the invention
Below embodiments of the invention being elaborated, the present embodiment is carried out under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Implement as it is shown in figure 1, the present embodiment includes two stages:
1) first, the blank 4 that thickness is 1.2mm is placed in the high muscle shaping dies shown in Fig. 3, and adopts left high muscle slide block 1, right high muscle slide block 2 to be compressed by blank 4 together with the first and second high muscle dies 3 and 6.Subsequently, high muscle punch 5 moves up, left high muscle slide block 1 and the first high muscle die 3 move right simultaneously, right high muscle slide block 2 and the second high muscle die 6 are moved to the left, moving towards the metal material making blank 4 both sides toward zone line feeding by both, high muscle avoids the high muscle punch 5 local sheet thickness caused when carrying out blank bending that moves up thinning while having shaped.
The displacement sum of described left high muscle slide block 1 and right high muscle slide block 2 is equal to the difference of high muscle cross section profile line length with its projected length.
2) blank 4 step 1 obtained is placed in the short muscle shaping dies shown in Fig. 5, utilizes left short muscle slide block 7, right short muscle slide block the 8, first and second short muscle die 9 and 10 to be compressed.Shown in Fig. 6, left short top rib block 14 and the right side short top rib block 15 are made move toward one another and are contacted with high muscle, and the high muscle of preform cross-rib crossover sites flattens shape.Subsequently, upper short muscle punch 11 moves down, and moves up with short muscle punch 12 at present, move right with left short muscle slide block 7 and the first short muscle die 9, right short muscle slide block 8 and the second short muscle die 10 are moved to the left, and promote the metal material of blank 4 both sides toward intermediate flow, make blank 4 produce flexural deformation.
The displacement sum of a described left side short muscle slide block 7 and the right side short muscle slide block 8 is precisely the difference of short muscle cross section profile line length and its projected length.
As shown in Figure 6, due to upper short muscle punch 11 move down and under the process moved on short muscle punch 12 can make the metal material of middle part outflow, therefore the short top rib block 15 of left short top rib block 14 and the right side still needs to move along direction shown in Fig. 6, keeping contacting with blank 4, the high muscle to form cross-rib crossover sites flattens shape；The work surface inclination angle of this jacking block may be configured as 10-20 °.
Claims (8)
1. the complex bend forming technology of a non-contour cross-rib like members, it is characterised in that first carry out high muscle shaping successively, then carries out short muscle shaping again, avoids cross-rib intersection region thinning by two-step process successively；
Described high muscle shapes and refers to: high muscle punch moves upward and makes blank bend, will be located in the slide block of the blank left and right sides simultaneously and push down blank together with the high muscle die being positioned at blank top and to intermediary movements, thus promoting the blank of both sides to form high muscle toward middle movement；
Described short muscle shapes and includes:
Step one, the blank shaped by high muscle respectively arranges a jacking block in the high muscle both sides of the cross-rib intersection region that expection shapes after positioning, and drives jacking block move toward one another to contacting with high muscle, it is achieved the preform to the high muscle flattening shape of cross-rib crossover sites；
Step 2, will be located in the punch of blank upper and lower and be positioned at slide block and the die move toward one another simultaneously of blank left and right side, promote blank toward middle mobile, to avoid the local thickness that cross-rib intersection region developed area increases, both sides feed supplement deficiency causes thinning, be finally completed cross-rib and shape.
2. complex bend forming technology according to claim 1, is characterized in that, two jacking blocks related in step one diagonally go up direction move toward one another.
3. the mould of the high muscle shaping stage realizing technique described in claim 1 or 2, it is characterized in that, including: high muscle punch and the oriented towards one another mechanism being arranged at high muscle punch both sides, wherein: the two ends of blank to be formed are fixedly installed in the oriented towards one another mechanism of both sides respectively, high muscle punch move upward while both sides oriented towards one another mechanism level to intermediary movements realize shape.
4. mould according to claim 3, is characterized in that, described oriented towards one another mechanism includes: for clamping the die of blank to be formed and corresponding slide block.
5. the mould of the short muscle shaping stage realizing technique described in claim 1 or 2, it is characterized in that, including: upper and lower short muscle punch, the oriented towards one another mechanism being positioned at both sides being oppositely arranged and be arranged at the left and right jacking block within upper short muscle punch, wherein: the two ends of the blank that high muscle shapes are fixedly installed in the oriented towards one another mechanism of both sides respectively, upper and lower short muscle punch oriented towards one another mechanism level of both sides while vertical direction move toward one another realizes shaping to intermediary movements.
6. mould according to claim 5, is characterized in that, the lower end geometry of described upper short muscle punch is reverse V-shaped structure and both sides chamfering, and described left and right jacking block is arranged in v-shaped cavity.
7. mould according to claim 5, it is characterized in that, described oriented towards one another mechanism includes: for clamping the die of the blank that high muscle shapes and corresponding slide block, wherein: the upper end profile of die is consistent with the upper profile of the blank that high muscle shapes, the lower profile of slide block is consistent with the lower profile of the blank that high muscle shapes, and thereby may be ensured that blank moves inward under the die common pressuring action with slide block.
8. the mould according to claim 5 or 6, is characterized in that, described left jacking block and the work surface inclination angle of right jacking block are set to 10-20 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073575.0A CN104646466B (en) | 2015-02-11 | 2015-02-11 | The complex bend forming technology of non-contour cross-rib like members |
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| CN201510073575.0A CN104646466B (en) | 2015-02-11 | 2015-02-11 | The complex bend forming technology of non-contour cross-rib like members |
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| CN104646466A CN104646466A (en) | 2015-05-27 |
| CN104646466B true CN104646466B (en) | 2016-07-06 |
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| CN112222271B (en) * | 2020-09-24 | 2023-03-24 | 中国航发贵州黎阳航空动力有限公司 | Hot stretch forming method of shunt shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL169276C (en) * | 1968-12-31 | 1982-07-01 | Fournier Gilbert | DEVICE FOR APPLYING EXPANSION WAVES IN A TWO-SQUARE CURVED PLATE MADE OF METAL. |
| US3824664A (en) * | 1972-03-29 | 1974-07-23 | M Seeff | Cladding sheets |
| GB2120142B (en) * | 1982-05-10 | 1986-01-02 | Daifuku Machinery Works | Forming metal plates |
| CN201036795Y (en) * | 2006-12-28 | 2008-03-19 | 中国南车集团武昌车辆厂 | Sheet point pressing die lacing wire machine |
| CN201519718U (en) * | 2009-10-16 | 2010-07-07 | 内蒙古第一机械制造（集团）有限公司 | Universal ribbing mold for back punching plastic forming |
| CN203265395U (en) * | 2013-04-15 | 2013-11-06 | 苏州富士特金属薄板制品有限公司 | Fast bending and forming reinforcing rib die |
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