CN103920786A - Method for forming plates on basis of vibration by aid of flexible male die - Google Patents
Method for forming plates on basis of vibration by aid of flexible male die Download PDFInfo
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- CN103920786A CN103920786A CN201410135376.3A CN201410135376A CN103920786A CN 103920786 A CN103920786 A CN 103920786A CN 201410135376 A CN201410135376 A CN 201410135376A CN 103920786 A CN103920786 A CN 103920786A
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Abstract
The invention discloses a method for forming plates on the basis of vibration by the aid of a flexible male die. Machining equipment for implementing the method mainly comprises a lower die holder, a female die, a blank holder, granular media, a blank holder force applying device, a vibration device, a punch, an upper die holder, guide columns, guide sleeves and the like. The method includes placing a metal plate between the female die and the blank holder when the metal plate is about to be machined and formed, enabling the blank holder to apply blank holder force, then adding the granular media into a barrel formed by the blank holder and the metal plate, enabling a pressure head to compress the media under the effect of pressure, applying the pressure to the plate and performing deep drawing forming on the plate by the aid of the flexible male die; enabling the vibration device to apply vibration on the punch, the blank holder and the female die individually or jointly. The method has the advantages that friction and deformation resistance among the plate and the dies can be reduced under the effect of vibration excitation, the flowability and the force transfer property of the granular media can be promoted, plate forming limit can be upgraded, and the method is favorable for machining and forming components in complicated shapes; the granular media can be reused, accordingly, the die machining cost and energy consumption can be reduced, and the method is favorable for environmental protection.
Description
Technical field
The present invention relates to a kind of manufacturing process of sheet metal.
Background technology
Along with the fast-developing and energy-saving and cost-reducing requirement of the industries such as China's automobile, Aero-Space, military project, increasing to the demand of some high accuracy, complex-shaped alloy in lightweight or high-strength alloy sheet metal component.But these materials are shaped difficult with conventional deformation method, become the bottleneck that it shapes.So the Technology of Plastic Processing of the difficult moulding material of this class has become study hotspot.In order to solve the processing problems of the difficult moulding material of this class, current processing method exists the problems such as processing passage is various, former is complicated, input cost is higher.
Summary of the invention
The invention reside in provides a kind of and can cut down finished cost and energy resource consumption, be conducive to the soft punch manufacturing process of sheet material based on vibration that complicated form part shapes.
Technical scheme of the present invention is as follows:
Former of the present invention is mainly comprised of die shoe, die, blank holder, granule medium, pressure-pad-force bringing device, vibrating device, drift, upper bolster, guide pillar and guide pin bushing etc.Pressure head, guide pillar, pressure-pad-force bringing device and upper bolster form upper die component, and die, guide pin bushing and die shoe form lower membrane module, and guide pillar and guide pin bushing form guidance system.Concave die cavity sidewall shape is determined according to the shape of drip molding.Upper bolster and die shoe are individually fixed on the upper table and lower table of press-forming machine.Upper bolster is all fixed in one end of pressure head, guide pillar and pressure-pad-force bringing device; Die and guide pin bushing are fixed on die shoe, and the other end of above-mentioned pressure-pad-force bringing device is fixed on blank holder, and this device can be distributed on blank holder by force application apparatus such as a plurality of hydraulic cylinders, pneumatic cylinder or springs.The other end of above-mentioned guide pillar is that free end inserts in guide pin bushing, and this guide pillar can move up and down smoothly in guide pin bushing, thereby guarantees the accurate positioning of each moving component in whole mould drawing process.Vibrating device adopts screw thread or alternate manner to be connected on drift, blank holder or die, can apply separately or combine at drift, blank holder and die to apply vibrational excitation.
Described vibrating device adopts ultrasonic vibration, electric and magnetic oscillation, mechanical oscillation or liquid (gas) to press the forms such as vibration, and this vibrating device can be concentrated excitation for single-point, can be also circumferential multi-point equispaced excitation.
Manufacturing process of the present invention is as follows:
(1) upper and lower die holder is individually fixed on the upper table and lower table of press-forming machine, sheet metal is placed between die and blank holder;
(2) pressure-pad-force bringing device applies initial pressure-pad-force by blank holder to sheet material, and sheet metal blank is compacted, and blank holder and sheet metal have formed a tubular, as barrel; It is wrinkling that pressure-pad-force sheet metal being applied by blank holder can suppress flange sheet material, guarantees that pull and stretch carries out smoothly;
(3) in casing drum, pour appropriate granule medium into, work loading height is 1～3 times of barrel diameter;
(4) Vibration on Start-up device, implements vibrational excitation to corresponding driver unit (blank holder, pressure head or die);
(5) pressure head is under the effect of guidance system, descending insertion barrel, and the granule medium that gradually reduces exerts pressure and carries out drawing and forming sheet material, meanwhile, pressure-pad-force is along with shaping is carried out constantly automatically controlling and adjusting;
(6) pull and stretch finishes, and stops vibration, and upper die component moves to initial position under the effect of die cutting press, takes out workpiece, shapes end.
Described granule medium can be that 0.05～0.8mm solid particle forms by particle diameter, this particle can be stainless steel ball, ceramic particle, SiC particle, SiO2 particle, natural fine sand etc., and the employing of concrete medium is according to conditional decisions such as the temperature of sheet material forming, interior pressures.
The present invention compared with prior art tool has the following advantages:
Vibrational excitation effect can effectively reduce frictional force between sheet metal and mould, and when applying dither excitation, can make sheet deformation drag reduce, suppress crackle and produce and develop; Vibrational excitation also promotes granule medium mobility and transmission force property simultaneously, thereby effectively improve For The Forming Limit of Sheet Metals, be conducive to shaping of complicated shape part, and granule medium can be reused, reduce cost and the energy resource consumption of Mould Machining, be conducive to environmental protection.
Accompanying drawing explanation
Fig. 1 is that former of the present invention is analysed and observe simplified schematic diagram.
Fig. 2 is that simplified schematic diagram is analysed and observe in forming process blank holder of the present invention vibrational excitation.
Fig. 3 is that simplified schematic diagram is analysed and observe in forming process pressure head of the present invention vibrational excitation.
The specific embodiment
In the soft punch former of the sheet material schematic diagram based on vibration shown in Fig. 1, upper bolster 6 and die shoe 11 are individually fixed on the upper table and lower table of press-forming machine.Upper bolster is all fixed in one end of pressure head 4, guide pillar 9 and pressure-pad-force bringing device 7; Die 1 and guide pin bushing 10 are fixed on die shoe, and the other end of above-mentioned pressure-pad-force bringing device is fixed on blank holder 3, and this device is distributed on blank holder by four pneumatic cylinder force application apparatus.The other end of above-mentioned guide pillar is that free end inserts in guide pin bushing, and this guide pillar can move up and down smoothly in guide pin bushing, thereby guarantees the accurate positioning of each moving component in whole mould drawing process.Vibrating device 5 adopts and is threadedly connected on blank holder, at blank holder, applies separately vibrational excitation.Sheet metal 5 is placed between die and blank holder, and granule medium 8 is placed in the barrel of blank holder and sheet metal formation.
Embodiment 1:
(1) upper and lower die holder is individually fixed on the upper table and lower table of press-forming machine, AA1020 aluminium plate is placed between die and blank holder;
(2) pressure-pad-force bringing device is comprised of four springs, by blank holder, sheet material is applied to initial pressure-pad-force, and sheet metal blank is compacted, and blank holder and sheet metal have formed a tubular, as barrel; It is wrinkling that the pressure-pad-force by blank holder, sheet metal being applied by pressure-pad-force bringing device can suppress flange sheet material, guarantees that pull and stretch carries out smoothly;
(3) in casing drum, pour the ceramic particle that particle diameter is 0.125～0.25mm into, pouring into is highly 1.2 times of barrel diameters;
(4) the uniform vibrating device being installed on blank holder is that four electromagnetic high-frequency vibrators start simultaneously, and blank holder is implemented to axial vibration excitation;
(5) pressure head is under forcing press effect, and through the effect of guidance system, descending insertion barrel, and the granule medium that gradually reduces exerts pressure and carries out drawing and forming sheet material, meanwhile, the pressure-pad-force being produced by Compress Spring is along with shaping increases gradually;
(6) pull and stretch finishes, and stops vibration, and upper die component moves to initial position under the effect of die cutting press, takes out workpiece, shapes end.(as shown in Figure 2.）
Embodiment 2:
(1) upper and lower die holder is individually fixed on the upper table and lower table of press-forming machine, 304 stainless steel materials are placed between die and blank holder;
(2) pressure-pad-force bringing device is comprised of four hydraulic cylinders, and this hydraulic cylinder applies initial pressure-pad-force by blank holder to sheet material, and sheet metal blank is compacted, and blank holder and sheet metal have formed a tubular, as barrel; It is wrinkling that the pressure-pad-force by blank holder, sheet metal being applied by pressure-pad-force bringing device can suppress flange sheet material, guarantees that pull and stretch carries out smoothly;
(3) in casing drum, pour the shot particle that particle diameter is 0.2～0.3mm into, work loading height is 2 times of barrel diameters;
(4) the uniform vibrating device being installed on blank holder is that four pneumatic vibrators start simultaneously, and corresponding blank holder is implemented to axial vibration excitation;
(5) pressure head is under forcing press, and the effect of process guidance system, descending insertion barrel, and the granule medium that gradually reduces is exerted pressure and is carried out drawing and forming sheet material, meanwhile, the pressure-pad-force of being set by flanging pneumatic cylinder keeps a certain steady state value in forming process, and this value is as the criterion so that sheet material flange is wrinkle resistant, approaches critical value as far as possible;
(6) pull and stretch finishes, and stops vibration, and upper die component moves to initial position under the effect of die cutting press, takes out workpiece, shapes end.
Embodiment 3:
(1) upper and lower die holder is individually fixed on the upper table and lower table of press-forming machine, 6061 aluminium alloy plates are placed between die and blank holder;
(2) pressure-pad-force bringing device is comprised of four springs, by blank holder, sheet material is applied to initial pressure-pad-force, and sheet metal blank is compacted, and blank holder and sheet metal have formed a tubular, as barrel; It is wrinkling that the pressure-pad-force by blank holder, sheet metal being applied by pressure-pad-force bringing device can suppress flange sheet material, guarantees that pull and stretch carries out smoothly;
(3) in casing drum, pour the SiO2 particle 8 that particle diameter is 0.15～0.20mm into, pouring into is highly 1.5 times of barrel diameters;
(4) be installed on the ultrasonic vibrator startup on pressure head top, pressure head is implemented to axial vibration excitation;
(5) pressure head is under forcing press effect, and through the effect of guidance system, descending insertion barrel, and the granule medium that gradually reduces exerts pressure and carries out drawing and forming sheet material, meanwhile, the pressure-pad-force being produced by Compress Spring is along with shaping increases gradually;
(6) pull and stretch finishes, and stops vibration, and upper die component moves to initial position under the effect of die cutting press, takes out workpiece, shapes end.(as shown in Figure 3.）
Claims (4)
- One kind based on vibration the soft punch former of sheet material, it is mainly by die shoe, die, blank holder, granule medium, pressure-pad-force bringing device, vibrating device, drift, upper bolster, the composition such as guide pillar and guide pin bushing, pressure head, guide pillar, pressure-pad-force bringing device and upper bolster form upper die component, die, guide pin bushing and die shoe form lower membrane module, one end of guide pillar is connected in upper bolster, the other end is that free end insertion is fixed in the guide pin bushing on die shoe, concave die cavity sidewall shape is determined according to the shape of drip molding, upper bolster and die shoe are individually fixed on the upper table and lower table of press-forming machine, it is characterized in that: upper bolster is all fixed in one end of pressure head and pressure-pad-force bringing device, die is fixed on die shoe, the other end of above-mentioned pressure-pad-force bringing device is fixed on blank holder, this pressure-pad-force bringing device is distributed on blank holder by force application apparatus such as a plurality of hydraulic cylinders, pneumatic cylinder or springs, and vibrating device adopts screw thread or alternate manner to be connected on drift, blank holder or die.
- According to claim 1 based on vibration the soft punch former of sheet material, it is characterized in that: described vibrating device adopts the forms such as ultrasonic vibration, electric and magnetic oscillation, mechanical oscillation, air pressure or hydraulic vibration, this vibrating device is that single-point is concentrated excitation or circumferential multi-point equispaced excitation.
- Based on vibration the soft punch manufacturing process of sheet material, it is characterized in that:(1) upper and lower die holder is individually fixed on the upper table and lower table of press-forming machine, sheet metal is placed between die and blank holder;(2) pressure-pad-force bringing device applies initial pressure-pad-force by blank holder to sheet material, and sheet metal blank is compacted, and blank holder and sheet metal have formed a tubular, as barrel;(3) in barrel, pour appropriate granule medium into, work loading height is 1～3 times of barrel diameter;(4) Vibration on Start-up device is that blank holder, pressure head or die are implemented vibrational excitation to corresponding driver unit;(5) pressure head is under the effect of guidance system, descending insertion barrel, and the granule medium that gradually reduces exerts pressure and carries out drawing and forming sheet material, meanwhile, pressure-pad-force is along with shaping is carried out constantly automatically controlling and adjusting;(6) pull and stretch finishes, and stops vibration, and upper die component moves to initial position under the effect of die cutting press, takes out workpiece, shapes end.
- According to claim 4 based on vibration the soft punch manufacturing process of sheet material, it is characterized in that: described granule medium is that 0.05～0.8mm solid particle forms by particle diameter, and this granule medium is shot particle, ceramic particle, SiC particle, SiO2 particle, natural fine sand etc.
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| CN201410135376.3A CN103920786B (en) | 2014-04-04 | 2014-04-04 | A kind of soft punch manufacturing process of sheet material based on vibration |
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Cited By (15)
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|---|---|---|---|---|
| CN105817516A (en) * | 2016-04-22 | 2016-08-03 | 安庆师范学院 | Sheet combination micro-forming device and method based on ultrasonic vibration |
| CN107931420A (en) * | 2017-11-28 | 2018-04-20 | 哈尔滨工业大学 | Miniature thin-wall revolving body workpieces based on ultrasonic vibration auxiliary shape corrector |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
| CN109798941A (en) * | 2019-03-14 | 2019-05-24 | 上海交通大学 | CFRP die forming and CFRP/ metallic composite panel single step co-curing shape test device |
| CN110001078A (en) * | 2019-04-28 | 2019-07-12 | 燕山大学 | A kind of carbon fiber/aramid fiber fiber hybrid composite preparation facilities and method |
| CN110090892A (en) * | 2019-04-10 | 2019-08-06 | 杭州电子科技大学 | A kind of titanium alloy foil micro parts ultrasonic vibration rubber pad forming device and manufacturing process |
| CN110479832A (en) * | 2019-07-24 | 2019-11-22 | 太原理工大学 | A kind of forming of cladded type magnesium alloy Multi-layer structure member and composite preparation process and device |
| CN110773879A (en) * | 2019-11-06 | 2020-02-11 | 哈尔滨工业大学 | Metal hollow structure prefabricated vacancy forming device and method thereof |
| CN111604401A (en) * | 2020-05-26 | 2020-09-01 | 深圳大学 | Bulging device |
| CN112845782A (en) * | 2021-01-28 | 2021-05-28 | 浙江理工大学 | Solid particle medium forming method and equipment |
| CN113289837A (en) * | 2021-05-27 | 2021-08-24 | 燕山大学 | Vibration-assisted powder coating roll forming device and method |
| CN114472663A (en) * | 2022-02-22 | 2022-05-13 | 沈阳航空航天大学 | Method and device for performing warm-hot forming on light alloy sheet metal part by taking thermal expansion graphite as force transmission medium |
| CN114505395A (en) * | 2022-04-21 | 2022-05-17 | 河北工业大学 | Variable-speed liquid filling-ultrasonic-laser composite forming method and system for thin-wall component |
| CN114798824A (en) * | 2022-05-18 | 2022-07-29 | 沈阳航空航天大学 | Laser/ultrasonic composite auxiliary bending forming method and device for titanium alloy plate |
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| JP2005193293A (en) * | 2004-01-09 | 2005-07-21 | Kawasaki Heavy Ind Ltd | Die, and forming method using die |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105817516B (en) * | 2016-04-22 | 2018-01-16 | 安庆师范大学 | The compound micro-forming device of thin plate and method based on vibration of ultrasonic wave |
| CN105817516A (en) * | 2016-04-22 | 2016-08-03 | 安庆师范学院 | Sheet combination micro-forming device and method based on ultrasonic vibration |
| CN107931420A (en) * | 2017-11-28 | 2018-04-20 | 哈尔滨工业大学 | Miniature thin-wall revolving body workpieces based on ultrasonic vibration auxiliary shape corrector |
| CN107931420B (en) * | 2017-11-28 | 2019-07-02 | 哈尔滨工业大学 | Miniature thin-wall revolving body workpieces forming-straightening method based on ultrasonic vibration auxiliary |
| CN108801801A (en) * | 2018-06-15 | 2018-11-13 | 燕山大学 | A kind of assay method of sheet alloy hot forming limit curve |
| CN109798941A (en) * | 2019-03-14 | 2019-05-24 | 上海交通大学 | CFRP die forming and CFRP/ metallic composite panel single step co-curing shape test device |
| CN110090892A (en) * | 2019-04-10 | 2019-08-06 | 杭州电子科技大学 | A kind of titanium alloy foil micro parts ultrasonic vibration rubber pad forming device and manufacturing process |
| CN110001078A (en) * | 2019-04-28 | 2019-07-12 | 燕山大学 | A kind of carbon fiber/aramid fiber fiber hybrid composite preparation facilities and method |
| CN110479832A (en) * | 2019-07-24 | 2019-11-22 | 太原理工大学 | A kind of forming of cladded type magnesium alloy Multi-layer structure member and composite preparation process and device |
| CN110773879B (en) * | 2019-11-06 | 2021-12-17 | 哈尔滨工业大学 | Metal hollow structure prefabricated vacancy forming device and method thereof |
| CN110773879A (en) * | 2019-11-06 | 2020-02-11 | 哈尔滨工业大学 | Metal hollow structure prefabricated vacancy forming device and method thereof |
| CN111604401A (en) * | 2020-05-26 | 2020-09-01 | 深圳大学 | Bulging device |
| CN112845782A (en) * | 2021-01-28 | 2021-05-28 | 浙江理工大学 | Solid particle medium forming method and equipment |
| CN113289837A (en) * | 2021-05-27 | 2021-08-24 | 燕山大学 | Vibration-assisted powder coating roll forming device and method |
| CN114472663A (en) * | 2022-02-22 | 2022-05-13 | 沈阳航空航天大学 | Method and device for performing warm-hot forming on light alloy sheet metal part by taking thermal expansion graphite as force transmission medium |
| CN114505395A (en) * | 2022-04-21 | 2022-05-17 | 河北工业大学 | Variable-speed liquid filling-ultrasonic-laser composite forming method and system for thin-wall component |
| CN114505395B (en) * | 2022-04-21 | 2022-06-17 | 河北工业大学 | Variable-speed liquid-filling-ultrasonic-laser composite forming method and system for thin-wall component |
| CN114798824A (en) * | 2022-05-18 | 2022-07-29 | 沈阳航空航天大学 | Laser/ultrasonic composite auxiliary bending forming method and device for titanium alloy plate |
| CN114798824B (en) * | 2022-05-18 | 2024-05-31 | 沈阳航空航天大学 | Laser/ultrasonic composite auxiliary bending forming method and device for titanium alloy sheet |
| CN117225963A (en) * | 2023-11-13 | 2023-12-15 | 苏州利来汽车配件有限公司 | Stamping equipment for machining automobile metal parts |
| CN117225963B (en) * | 2023-11-13 | 2024-02-20 | 苏州利来汽车配件有限公司 | Stamping equipment for machining automobile metal parts |
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