CN102049446A - Variable-procedure stamping die for positive and negative stretching of parts - Google Patents
Variable-procedure stamping die for positive and negative stretching of parts Download PDFInfo
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- CN102049446A CN102049446A CN 201010548532 CN201010548532A CN102049446A CN 102049446 A CN102049446 A CN 102049446A CN 201010548532 CN201010548532 CN 201010548532 CN 201010548532 A CN201010548532 A CN 201010548532A CN 102049446 A CN102049446 A CN 102049446A
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Abstract
A variable-procedure stamping die for the positive and negative stretching of parts belongs to the technical field of forming and dies in mechanical engineering, and consists of a hydraulic system and a die part. The hydraulic system comprises an adjustable one-way throttle valve, a three-position four-way directional valve and a piston rod; and the die part comprises an inner/outer stretching punch-die fixed on a lower die holder, as well as an outer stretching female die and an inner stretching male die which are fixed on an upper die holder, wherein the movement of the outer stretching female die is controlled by the piston rod; the moving direction and speed of the piston rod are controlled by the three-position four-way directional valve and the adjustable one-way throttle valve; sheets can be stretched into different depths to achieve different procedures of stamping through adjustment of initial relative positions of both the outer stretching female die and the inner stretching male die in the height direction and the replacement of a limited block; and the precedence of inner stretching and outer stretching of the sheets can be changed through controlling the up-and-down movement direction of the outer stretching female die. The variable-procedure stamping die provided by the invention overcomes the shortcomings in the prior art that a plurality of stamping dies are required to complete the stamping, has a lower cost and improves the economic benefit.
Description
Technical field
The present invention relates to a kind of mechanical and hydraulic linkage that is used for positive and negative drawing product preface composite punching die of exchanging work, belong to shaping and technical field of mold in the mechanical engineering.
Background technology
Sheet metal stretching is as a kind of important sheet-metal press working processing method, its stretching quality depends primarily on the correctness and the reasonability of drawing process and mould, in various sheet-metal press working processing methods, the shared status that stretches is most important, the shaping difficulty is also maximum, but does not see as yet that up to now the integrated of drawing process and mould structure arranged; At present the designer is when determining various drawing process scheme, still generally utilize experience, constantly revise process program and mould structure by debugging mould repeatedly, its significant disadvantages is exactly that forming quality is poor, number of molds is many, processing and debugging cycle are very long, and the production cost height can not adapt to the fierce competitive market environment.
In the sheet-metal press working process, only follow the basic law of sheet metal forming, just can produce high-quality punching press product, inside and outside stretching and punching processing for light sheet, owing to be subjected to the restriction of the material deformation limit, produce with experiment in need to adopt different forming process contents and change in the imaging order of out-draw.
Box part stretch forming is one of typical manufacturing process.The present invention relates to a kind of preface composite punching die of exchanging work of mechanical and hydraulic linkage, the variation that the in-process of both can having realized being shaped holds, also can realize the same processes content but the variation of differing formed order, optimize strain paths, reduce number of molds, easy to operate, save and install and debug man-hour, guarantee element precision, raise labour productivity, thereby increase economic efficiency.
Summary of the invention
The object of the present invention is to provide a kind of mechanical and hydraulic linkage that can on single-lift hydraulic press, use preface composite die of exchanging work, it can realize the be shaped variation of in-process appearance and the variation of imaging order, optimize strain paths, improve the forming property of forming speed sensitiveness plate, process the product of different depth demand, solve the deficiency that just can finish this punching press originally with several secondary diels, easy to operate, realize automated production, save and install and debug man-hour, save the mould manufacturing expense, guarantee element precision, raise labour productivity.
The present invention designs a kind of mechanical and hydraulic linkage that is used for positive and negative drawing product preface composite punching die of exchanging work.With typical box part is example, simple box part as shown in Figure 2, flange face is the plane, the bottom is made of the anti-bulge of certain depth; The length and the width dimensions of simple box part are respectively A and B, and height dimension is H; Inner counter bulge length and width dimensions are respectively a and b, and height dimension is h.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: be made up of hydraulic system and mould part, described hydraulic system comprises adjustable one-way throttle valve, three position four-way directional control valve and piston rod; Described mould part comprises the interior out-draw punch-die that is fixed on the die shoe, is fixed on out-draw die and in-draw punch on the upper bolster, the motion of out-draw die is the piston rod control by hydraulic system, and the direction of motion of piston rod and speed are respectively by three position four-way directional control valve and the control of adjustable one-way throttle valve, by regulating out-draw die and the initial relative position of in-draw punch on short transverse, and be positioned at the different depth that the limited block of differing heights on the die shoe is realized sheet metal stretching by replacing, realize the drawing of different operation contents; The direction that moves up and down by control out-draw die changes out-draw precedence in the plate.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: described positive and negative drawing product is a box part.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: the die degree of depth in the interior out-draw punch-die equals the height h of the inner counter bulge of positive and negative drawing product.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: the degree of depth of described plate out-draw equals the height H of positive and negative drawing product.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: the length and the width of out-draw punch-die in the length A of positive and negative drawing product and width B equal respectively.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: the length a of the inner counter bulge of positive and negative drawing product and width b equal the length and the width of in-draw punch respectively.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: the direction that moves up and down by control out-draw die changes that out-draw precedence refers in the plate: the oil circuit in the hydraulic system links to each other with hydraulic cylinder in the upper bolster, the A mouth of oil circuit connects the cavity of resorption of hydraulic cylinder, the B mouth of oil circuit connects the epicoele of hydraulic cylinder, constitute the loop, change the oil-feed direction by three position four-way directional control valve, the direction that moves up and down of control out-draw die.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product, it is characterized in that: when position, a three position four-way directional control valve oil left side is connected, oil enters the cavity of resorption of hydraulic cylinder from the A mouth, the moving upward of control out-draw die, and oil is from the epicoele of hydraulic cylinder and flow back to the fuel tank of hydraulic system through the B mouth; When the right position of three position four-way directional control valve oil was connected, oil entered the epicoele of hydraulic cylinder from the B mouth, the moving downward of control out-draw die, and oil is from the cavity of resorption of hydraulic cylinder and flow back to the fuel tank of hydraulic system through the A mouth.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: when out-draw die and in-draw punch height flush, during the downward punching press of upper bolster, realize outer shape and inner counter bulge stretch forming simultaneously.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: when the out-draw die is lower than in-draw punch height, during the downward punching press of upper bolster, realize earlier outer shape being stretched, bulge stretches to inner counter then.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: when the out-draw die is higher than in-draw punch height, during the downward punching press of upper bolster, realize that bulge stretches to inner counter earlier, then outer shape is stretched.
Described a kind of preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: regulate the draw speed of out-draw die by adjustable one-way throttle valve, improve the forming property of forming speed sensitiveness plate.
The invention has the advantages that: 1) adopt the mechanical and hydraulic linkage device, initial position by piston in the control hydraulic system is regulated out-draw die and the initial relative position of in-draw punch on short transverse, thereby can realize the drawing of different operation contents; 2), can change the operation content, produce the product of different depth demand by changing the limited block of differing heights; 3) regulate the different dies of the out-draw constantly direction of motion up and down by three position four-way directional control valve, thereby can realize the same processes content but the drawing of different inside and outside imaging orders; 4) regulate the draw speed of out-draw die by adjustable one-way throttle valve, improve the forming property of forming speed sensitiveness plate; 5) this composite die is realized control automatically by stroke relay, reversal valve, overflow valve, choke valve, limited post etc., makes easy to operately, saves and installs and debugging man-hour, guarantees part precision, raises labour productivity; 6) solve the deficiency that to finish this punching press originally with several secondary diels, saved die cost, increase economic efficiency.
Description of drawings
Fig. 1 is a kind of preface diel structure chart of exchanging work that is used for the positive and negative drawing product of the present invention;
Fig. 2 is typical box part view;
Fig. 3 is the HYDRAULIC CONTROL SYSTEM sketch;
Fig. 4 is forming technology scheme one an initial position mould structure sketch, and out-draw die and in-draw punch height flush;
Fig. 5 is forming technology scheme two initial position mould structure sketches, and the out-draw die is lower than in-draw punch height;
Fig. 6 is forming technology scheme three initial position mould structure sketches, and the out-draw die is higher than in-draw punch height.
In the accompanying drawing: the adjustable one-way throttle valve 28-of blank holder 16-out-draw die 17-spring 18-screw 19-pin 20-screw rod 21-upper bolster 22-stroke relay b 23-fuel tank 24-filter 25-hydraulic pump 26-overflow valve 27-check valve 29-three position four-way directional control valve in the out-draw punch-die 11-die shoe 12-elastic device 13-stroke relay a 14-limited block 15-in the 1-screw 2-hydraulic cylinder 3-cylinder cap 4-piston rod 5-screw 6-in-draw punch 7-guide pin bushing 8-external pressure flange 9-guide pillar 10-.
The specific embodiment
Below by embodiment and contrast accompanying drawing, further specify concrete structure of the present invention and embodiment thereof.
By Fig. 4～Fig. 6 as can be known, the object of the present invention is to provide and to realize being shaped that in-process hold to change and inside and outside imaging order variation with the compound die of a cover mechanical and hydraulic linkage, reduced number of molds, easy to operate, save and install and debug man-hour, save the mould manufacturing expense, guarantee element precision, raise labour productivity.Respectively the implementation process of different inside and outside imaging order process programs is set forth below.
A kind of preface diel out-draw die 16 of exchanging work that is used for the positive and negative drawing product of the present invention links with piston rod 4, the control of employing mechanical and hydraulic linkage, regulate out-draw die 16 and the initial relative position of in-draw punch 6 on short transverse by piston rod 4 motions in the control hydraulic system, can also change differing heights limited block 14 in addition, thereby realize differing formed operation content change.
The variation of imaging order illustrates by following 3 process programs:
Process program 1: Figure 4 shows that to outer shape and inner counter bulge stretch forming simultaneously; Specific operation process is as follows: plate is put into location on the outer blank holder 8, the YA1 of three position four-way directional control valve 29 is got, position, reversal valve 29 left side is connected, the cavity of resorption oil-feed of hydraulic cylinder 2, by regulating choke valve 27 and overflow valve 26, it is concordant and keep-up pressure to make piston rod 4 upwards spur out-draw die 16 and in-draw punch 6, upper bolster 21 is descending, out-draw punch-die 10 and interior blank holder 15 in making, out-draw die 16 contacts simultaneously with outer blank holder 8, outer shape and inner counter bulge stretch simultaneously, in in-draw punch 6 arrives in the out-draw punch-die 10 bottom the die time, the pressurize shaping, this moment, profile stretched a part of, interior anti-bulge has stretched and has finished, this moment, upper bolster 21 arrival lower dead center stopped, when plate touches stroke relay b22, make the YA1 dead electricity of three position four-way directional control valve 29, YA2 gets, reversal valve 29 right positions are connected, the epicoele oil-feed of hydraulic cylinder 2, piston 4 promotes out-draw die 16 to be continued to move down, the remainder of stretching box part profile, when outer blank holder 8 moves to when contacting with limited block 14, system keep-ups pressure, and profile stretches and finishes, be that whole box part stretching is finished, outer blank holder 8 touched stroke relay a13 and made the YA2 dead electricity this moment, and YA1 gets electric, the position connections of reversal valve 29 left side, the oil-feed of hydraulic cylinder cavity of resorption, piston rod 4 pulling out-draw dies 16 are up, upper bolster 21 up backhauls, and outer blank holder 8 and interior blank holder 15 are released box part.
Process program 2: Figure 5 shows that earlier the outside H that stretches, the bulge h that stretches to inner counter then, promptly outside earlier back is inner; Specific operation process is as follows: plate is put into location on the outer blank holder 8, the YA2 of three position four-way directional control valve 29 is got, reversal valve 29 right positions are connected, the epicoele oil-feed of hydraulic cylinder 2, make piston rod 4 promote 16 motions of out-draw die downwards, that make out-draw die 16 and in-draw punch 6 apart highly is box part height of contour H, and maintenance hydraulic system pressure, upper bolster 21 is descending, out-draw die 16 is contacted with outer blank holder 8, stretching box part outer shape, when outer blank holder 8 moves to when contacting with limited block 14, system keep-ups pressure, profile stretches and finishes, outer blank holder 8 touched stroke relay a13 and made the YA2 dead electricity this moment, and YA1 gets electric, the position connections of reversal valve 29 left side, the oil-feed of hydraulic cylinder cavity of resorption, piston rod 4 pulling out-draw dies 16 are up, and upper bolster 21 continuation at this moment are descending, and out-draw punch-die 10 contacts with interior blank holder 15 in making, anti-bulge in stretching, when upper bolster 21 goes downwards to lower dead center and stops, system's pressurize shaping, at this moment anti-bulge has stretched and has finished, when contacting with stroke relay 22, plate makes the YA1 dead electricity, YA2 gets electric, upper bolster 21 up backhauls, and outer blank holder 8 and interior blank holder 15 are released box part.
Process program 3: Figure 6 shows that earlier to inner counter the bulge h that stretches, to the outside H that stretches, promptly inner earlier back is outside then; Specific operation process is as follows: plate is put into location on the outer blank holder 8, the YA1 of three position four-way directional control valve 29 is got, position, reversal valve 29 left side is connected, the cavity of resorption oil-feed of hydraulic cylinder 2, making piston rod 4 upwards spur 16 motions of out-draw die makes out-draw die 16 and in-draw punch 6 height be inner counter bump height h apart, and maintenance system pressure, upper bolster 21 is descending, out-draw die 16 is contacted with interior blank holder 15, the inner counter bulge is shaped, when upper bolster 21 goes downwards to lower dead center and stops, system keep-ups pressure, the inner counter bulge stretches and finishes, make the YA1 dead electricity when at this moment plate contacts with stroke relay 22, YA2 gets, reversal valve 29 right positions are connected, the epicoele oil-feed of hydraulic cylinder 2, it is descending that piston rod 4 drives out-draw die 16, out-draw die 16 contacts with outer blank holder 8, the stretching outer shape, when outer blank holder (8) goes downwards to when contacting with limited block 14, system keep-ups pressure, and profile stretches and finishes, be that whole box part stretching is finished, outer blank holder 8 touched stroke relays 13 and made the YA2 dead electricity this moment, and YA1 gets electric, the position connections of reversal valve 29 left side, the cavity of resorption oil-feed of hydraulic cylinder 2, piston rod 4 pulling out-draw dies 16 are up, upper bolster 21 up backhauls, and outer blank holder 8 and interior blank holder 15 are released box part.
Regulate the draw speed of out-draw die 16 by adjustable one-way throttle valve 27, improve the forming property of forming speed sensitiveness plate.
Claims (10)
1. preface diel of exchanging work that is used for the positive and negative drawing product is characterized in that: be made up of hydraulic system and mould part, described hydraulic system comprises adjustable one-way throttle valve (27), three position four-way directional control valve (29) and piston rod (4); Described mould part comprises the interior out-draw punch-die (10) that is fixed on the die shoe (11), be fixed on out-draw die (16) and (16) in-draw punch (6) on the upper bolster (21), out-draw die (16) motion is piston rod (4) control by hydraulic system, and the direction of motion of piston rod (4) and speed are respectively by three position four-way directional control valve (29) and adjustable one-way throttle valve (27) control, by regulating out-draw die (16) and the initial relative position of in-draw punch (6) on short transverse, and be positioned at die shoe (11) by replacing and go up the different depth that the limited block (14) of differing heights is realized the plate out-draw, realize the drawing of different operation contents; The direction that moves up and down by control out-draw die (16) changes out-draw precedence in the plate.
2. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: described positive and negative drawing product is a box part.
3. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: the die degree of depth in the interior out-draw punch-die (10) equals the height h of the inner counter bulge of positive and negative drawing product; The degree of depth of described plate out-draw equals the height H of positive and negative drawing product.
4. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1 is characterized in that: the length and the width of out-draw punch-die (10) in the length A of positive and negative drawing product and width B equal respectively; The length a of the inner counter bulge of positive and negative drawing product and width b equal the length and the width of in-draw punch (6) respectively.
5. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: refer to by out-draw precedence in the direction change plate that moves up and down of control out-draw die (16): the oil circuit in the hydraulic system links to each other with the hydraulic cylinder (2) of (21) in the upper bolster, the A mouth of oil circuit connects the cavity of resorption of hydraulic cylinder (2), the B mouth of oil circuit connects the epicoele of hydraulic cylinder (2), constitute the loop, change the oil-feed direction by three position four-way directional control valve (29), the direction that moves up and down of control out-draw die (16).
6. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 5, it is characterized in that: when position, three position four-way directional control valve (a 29) left side is connected, hydraulic oil enters (2) chamber under the hydraulic cylinder from the A mouth, control out-draw die (16) moves upward, and hydraulic oil is from hydraulic cylinder (2) epicoele and flow back to the fuel tank of hydraulic system through the B mouth; When the right position of three position four-way directional control valve (29) was connected, oil entered the epicoele of hydraulic cylinder (2) from the B mouth, and control out-draw die (16) moves downward, and oil is from hydraulic cylinder (2) cavity of resorption and flow back to the fuel tank of hydraulic system through the A mouth.
7. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: when out-draw die (16) and in-draw punch (6) highly flush, during upper bolster (21) punching press downwards, realize outer shape and inner counter bulge stretch forming simultaneously.
8. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: when out-draw die (16) is lower than in-draw punch (6) height, during upper bolster (21) punching press downwards, realize earlier outer shape being stretched, bulge stretches to inner counter then.
9. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: when out-draw die (16) is higher than in-draw punch (6) height, during upper bolster (21) punching press downwards, realize that bulge stretches to inner counter earlier, then outer shape is stretched.
10. a kind of preface diel of exchanging work that is used for the positive and negative drawing product as claimed in claim 1, it is characterized in that: regulate the draw speed of out-draw die (16) by adjustable one-way throttle valve (27), improve the forming property of forming speed sensitiveness plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010548532 CN102049446B (en) | 2010-11-18 | 2010-11-18 | Variable-procedure stamping die for positive and negative stretching of parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010548532 CN102049446B (en) | 2010-11-18 | 2010-11-18 | Variable-procedure stamping die for positive and negative stretching of parts |
Publications (2)
| Publication Number | Publication Date |
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| CN102049446A true CN102049446A (en) | 2011-05-11 |
| CN102049446B CN102049446B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010548532 Expired - Fee Related CN102049446B (en) | 2010-11-18 | 2010-11-18 | Variable-procedure stamping die for positive and negative stretching of parts |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240332A (en) * | 2013-04-03 | 2013-08-14 | 东莞市华世邦精密模具有限公司 | Production method of blind flange base |
| WO2017128828A1 (en) * | 2016-01-28 | 2017-08-03 | 苏州金童机械制造股份有限公司 | Molding device and molding process for implementing shearing and bending by using single power source |
| CN107073546A (en) * | 2014-10-28 | 2017-08-18 | 鲍尔公司 | For forming the apparatus and method with the cup for reshaping bottom |
| US10315242B2 (en) | 2014-10-15 | 2019-06-11 | Ball Metalpack, Llc | Apparatus and method for simultaneously forming a contoured shoulder and neck portion in a closed end of a metallic container |
| CN110076232A (en) * | 2019-04-24 | 2019-08-02 | 宁波骏腾模具科技有限公司 | A kind of stamping die with positive and negative deep-drawing structure |
| CN110834050A (en) * | 2018-12-31 | 2020-02-25 | 苏州市亿特隆科技有限公司 | Rapid stamping process of base |
| CN112170648A (en) * | 2020-09-15 | 2021-01-05 | 燕山大学 | Double-layer cylindrical part forward and backward deep drawing forming die and method |
| CN115634993A (en) * | 2022-12-23 | 2023-01-24 | 吉林大学 | Floating type blank pressing hydraulic bidirectional single-mode deep drawing forming device and forming method |
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| US3435653A (en) * | 1966-01-21 | 1969-04-01 | Nat Dairy Prod Corp | Forming method and apparatus |
| JPS5722827A (en) * | 1980-07-17 | 1982-02-05 | Hitachi Zosen Corp | One-body formation for double sink |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240332A (en) * | 2013-04-03 | 2013-08-14 | 东莞市华世邦精密模具有限公司 | Production method of blind flange base |
| CN103240332B (en) * | 2013-04-03 | 2016-08-10 | 东莞市华世邦精密模具有限公司 | The manufacture method of blind flange base |
| US10315242B2 (en) | 2014-10-15 | 2019-06-11 | Ball Metalpack, Llc | Apparatus and method for simultaneously forming a contoured shoulder and neck portion in a closed end of a metallic container |
| CN107073546A (en) * | 2014-10-28 | 2017-08-18 | 鲍尔公司 | For forming the apparatus and method with the cup for reshaping bottom |
| US10239648B2 (en) | 2014-10-28 | 2019-03-26 | Ball Metalpack, Llc | Apparatus and method for forming a cup with a reformed bottom |
| WO2017128828A1 (en) * | 2016-01-28 | 2017-08-03 | 苏州金童机械制造股份有限公司 | Molding device and molding process for implementing shearing and bending by using single power source |
| CN110834050A (en) * | 2018-12-31 | 2020-02-25 | 苏州市亿特隆科技有限公司 | Rapid stamping process of base |
| CN110076232A (en) * | 2019-04-24 | 2019-08-02 | 宁波骏腾模具科技有限公司 | A kind of stamping die with positive and negative deep-drawing structure |
| CN112170648A (en) * | 2020-09-15 | 2021-01-05 | 燕山大学 | Double-layer cylindrical part forward and backward deep drawing forming die and method |
| CN112170648B (en) * | 2020-09-15 | 2021-08-31 | 燕山大学 | Double-layer cylindrical part forward and backward deep drawing forming die and method |
| CN115634993A (en) * | 2022-12-23 | 2023-01-24 | 吉林大学 | Floating type blank pressing hydraulic bidirectional single-mode deep drawing forming device and forming method |
| CN115634993B (en) * | 2022-12-23 | 2023-03-10 | 吉林大学 | Floating type blank pressing hydraulic bidirectional single-mode deep drawing forming device and forming method |
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|---|---|
| CN102049446B (en) | 2013-01-23 |
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