CN101224479B - Bar stock pneumatic radial impact blanking method with high-efficiency and precision - Google Patents
Bar stock pneumatic radial impact blanking method with high-efficiency and precision Download PDFInfo
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- CN101224479B CN101224479B CN2008100174614A CN200810017461A CN101224479B CN 101224479 B CN101224479 B CN 101224479B CN 2008100174614 A CN2008100174614 A CN 2008100174614A CN 200810017461 A CN200810017461 A CN 200810017461A CN 101224479 B CN101224479 B CN 101224479B
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Abstract
The invention discloses a bar stock pneumatic radial impact high-efficiency precise blanking method. In the method, the bar stock is arranged on a pneumatic radial impact precise blanking device and the main working parts of the blanking device comprise a blanking sleeve, an elastic pad sleeve, a bar stock fixing sleeve, an impact cylinder, a piston and a blanking die. The impact cylinder works sequentially under the control of a control system and drives the blanking die to load the bar stock along the radial direction continuously; cracks are extended from the surface of the bar stock along the radial direction to the center of the circle by a fatigue breaking device of the bar stock, thus achieving the blanking and gaining good quality of the profile.
Description
Technical field
The invention belongs to the nearly clear height of low energy consumption and imitate the precision molding technology field, relate to a kind of baiting method, particularly a kind of bar stock pneumatic radial impact blanking method with high-efficiency and precision, this method has been utilized Pneumatic radial impact high efficiency precise blanking device, adopt the Pneumatic immpacting principle, realize that the fatigue crack of bar under the cycle radial loaded circumferentially produces, expands until fracture, finally finishes blanking.
Background technology
The blanking of metal bar material extensively is present in the procedure for preparation of cold extrusion, die forging, metal bracelet pin, rolling bearing roller, pin standard component and axle class part, and in these blanking operations, blanking enormous amount, baiting methods such as at present traditional shearing, sawing, high energy cutting exist to some extent that stock utilization is low, blanking pressure is big, energy consumption is high, production efficiency is low and problem such as blanking cross section quality difference.
Summary of the invention
, the objective of the invention is to both at home and abroad in the problem that exists aspect the efficient blanking of bar in view of at present, pneumatic radial impact blanking method with high-efficiency and precision is provided, and finished designing and developing of device tool structure member.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of bar stock pneumatic radial impact blanking method with high-efficiency and precision, it is characterized in that, this method is installed in bar on the Pneumatic radial impact precise blanking device, in the plane of bar vertical axis, evenly arrange 7 blow cylinders, have the blanking mould on each blow cylinder piston, the working profile curve of blanking mould adopts cycloid, under the control of control system, each blow cylinder is given the bar radial loaded successively, each like this have only a blanking mould in running order in, guarantee that bar only has load in one direction, can not interfere between each blanking mould, crack to realize circumferentially tired uniformly loading of bar, and impel crackle radially to expand, thereby finish blanking to the center of circle by the bar surface.
Described blow cylinder is pressed first blow cylinder according to technological requirement by control system, second blow cylinder, the 3rd blow cylinder, the 4th blow cylinder, the 5th blow cylinder, the 6th blow cylinder, the 7th blow cylinder repeats work in proper order, perhaps according to first blow cylinder, the 3rd blow cylinder, the 5th blow cylinder, the 7th blow cylinder, second blow cylinder, the 4th blow cylinder, the 6th blow cylinder repeats work in proper order, perhaps earlier by first blow cylinder, the 3rd blow cylinder, the 5th blow cylinder, the 7th blow cylinder repeats work, again by second blow cylinder, the 4th blow cylinder, the 6th blow cylinder repeats work in proper order.
Major technique characteristics of the present invention are as follows: 7 complete circumferentially circulations of blow cylinder load to bar, can realize maximum 10
4The tired blanking of Hz radial loaded; Radial stroke is adjustable, replaceable blanking mould, and controlled stroke scope 0～50mm can process the bar of different materials, different-diameter; Adopt the compressed air pressure regulating system, magnetic valve exchange system and intelligent control system efficiently can be realized the functions such as collection, optimization, control of blanking parameter can realizing diameter
10mm～
100mm, draw ratio are 0.2～10 bar blanking.Have advantages such as the range of work is wide, efficient is high, quality is good, and obtain good cross section quality.
Description of drawings
Fig. 1 is a blanking device schematic diagram of the present invention;
Fig. 2 is the blanking device side sectional view;
Fig. 3 is a workflow diagram;
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and inventor provide.
The specific embodiment
Bar stock pneumatic radial impact blanking method with high-efficiency and precision of the present invention is a fatigue fracture mechanism of utilizing bar, drives the blanking mould by cylinder and radially depresses CYCLIC LOADING along bar.Blanking mould working profile curve adopts cycloid, under the drive of cylinder piston, does the radial impact motion.The bar transfixion that is fixed adopts 7 blow cylinders evenly arranging and 7 blanking moulds of drive thereof to move according to the order of sequence, thereby constantly along bar imposed load radially, impels the fatigue crack of bar to produce and expansion, thereby finish precise blanking.For realizing bar blanking, adopt replaceable blanking mould to different-diameter.
Blanking device of the present invention as shown in Figure 1, this Pneumatic radial impact precise blanking device comprises base 9, on base 9, be respectively equipped with support 4 and frame 8, bar fixed cover 3 is installed on the support 4, radially evenly be furnished with 7 blow cylinders 5 at stand 8 upper edge bars, have piston 6 on the blow cylinder 5, blanking mould 7 is installed on the piston 6; Processed bar is fixing by bar fixed cover 3, the working profile curve of blanking mould 7 adopts cycloid, blow cylinder 5 is done the radial impact motion by the ordered pair bar under control system control, under the drive of the piston 6 of blow cylinder 5, drive blanking mould 7 and constantly radially load, thereby finish blanking to bar along bar.
For the following less bar of draw ratio, for example to seek out diameter
The bar of the long 20mm of 60mm, the shearing stress during blanking on the bar V-type channel section therefore can directly cut off bar, but this cutting mode had not both made full use of the stress concentration effect at V-type groove tip, reached the purpose by the expansion of I type crackle much larger than tension; Need very big applied force again.Can on bar bar fixed cover 3, add blanking sleeve 1, flexible cushion cover 2 in the blanking sleeve 1, to increase the draw ratio of bar, the most advanced and sophisticated suffered stress of V-type groove is based on tension when reaching blanking, and the realization crackle is pressed the purpose of I type expansion.
Each blow cylinder can be according to technological requirement by the control system sequential working, such as pressing 1# blow cylinder → 2# blow cylinder → 3# blow cylinder → 4# blow cylinder → 5# blow cylinder → 6# blow cylinder → 7# blow cylinder → 1# blow cylinder; 1# blow cylinder → 3# blow cylinder → 5# blow cylinder → 7# blow cylinder → 2# blow cylinder → 4# blow cylinder → 6# blow cylinder → 1# blow cylinder sequential working etc.
Each blow cylinder can be worked by control system as required according to technological requirement, such as repeating work in proper order by 1# blow cylinder → 3# blow cylinder → 5# blow cylinder → 7# cylinder impact earlier; And then repeat work etc. by 2# blow cylinder → 4# blow cylinder → 6# blow cylinder.
The air pressure of each blow cylinder can be regulated by control system according to technological requirement.
The operating frequency of each blow cylinder can be according to technological requirement by the control system adjustment.
Can be according to technological requirement by changing different blanking moulds to adapt to the bar of different-diameter.
Claims (3)
1. bar stock pneumatic radial impact blanking method with high-efficiency and precision, it is characterized in that, this method is installed in bar on the Pneumatic radial impact precise blanking device, in the plane of bar vertical axis, evenly arrange 7 blow cylinders, each blow cylinder is provided with the blanking mould, the working profile curve of blanking mould adopts cycloid, under the control of control system, each blow cylinder is given the bar radial loaded successively, each like this have only a blanking mould in running order in, guarantee that bar only has load in one direction, can not interfere between each blanking mould, crack to realize circumferentially tired uniformly loading of bar, and impel crackle radially to expand, thereby finish blanking to the center of circle by the bar surface;
Described blow cylinder is pressed first blow cylinder according to technological requirement by control system, second blow cylinder, the 3rd blow cylinder, the 4th blow cylinder, the 5th blow cylinder, the 6th blow cylinder, the 7th blow cylinder repeats work in proper order, perhaps according to first blow cylinder, the 3rd blow cylinder, the 5th blow cylinder, the 7th blow cylinder, second blow cylinder, the 4th blow cylinder, the 6th blow cylinder repeats work in proper order, perhaps earlier by first blow cylinder, the 3rd blow cylinder, the 5th blow cylinder, the 7th blow cylinder repeats work, again by second blow cylinder, the 4th blow cylinder, the 6th blow cylinder repeats work in proper order.
2. the method for claim 1 is characterized in that, the air pressure of described each blow cylinder can be regulated by control system according to technological requirement.
3. the method for claim 1 is characterized in that, the operating frequency of described each blow cylinder can be according to technological requirement by the control system adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100174614A CN101224479B (en) | 2008-01-31 | 2008-01-31 | Bar stock pneumatic radial impact blanking method with high-efficiency and precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100174614A CN101224479B (en) | 2008-01-31 | 2008-01-31 | Bar stock pneumatic radial impact blanking method with high-efficiency and precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224479A CN101224479A (en) | 2008-07-23 |
| CN101224479B true CN101224479B (en) | 2010-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100174614A Expired - Fee Related CN101224479B (en) | 2008-01-31 | 2008-01-31 | Bar stock pneumatic radial impact blanking method with high-efficiency and precision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530784A (en) * | 2018-12-10 | 2019-03-29 | 西安科技大学 | A kind of accurate separator of double sections shearing of pneumatic control |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008433B (en) * | 2012-11-29 | 2014-10-15 | 西安交通大学 | Low-stress and high-efficiency precise blanking method for medium-high frequency inductive heating of rod tube material |
| CN103286249B (en) * | 2013-06-13 | 2015-02-25 | 中国石油大学(华东) | Variable-speed circumferential low-stress bending fatigue crack precise blanking machine and blanking method thereof |
| CN104001784B (en) * | 2014-05-21 | 2015-12-09 | 西安交通大学 | The mechanical type bars and tubes material blanking machine that a kind of multiple alternating current servo motor direct drives |
| CN104307958B (en) * | 2014-09-02 | 2016-02-24 | 西安交通大学 | A kind of metal bar materials in the tube blanking device of explosive charge load mode |
| CN104607525B (en) * | 2015-01-19 | 2016-04-13 | 西安交通大学 | A kind of liquid inner high voltage of surperficial cannelure root of pipe feeding plays cracking method |
| CN110014071B (en) * | 2019-04-18 | 2020-07-31 | 中国石油大学(华东) | Pneumatic impact low-stress blanking device |
| CN110014072B (en) * | 2019-04-18 | 2020-03-24 | 中国石油大学(华东) | Efficient and precise low-stress blanking method for radial breaking |
| CN110561124A (en) * | 2019-08-28 | 2019-12-13 | 西安航空职业技术学院 | Metal bar stock blanking device and method |
-
2008
- 2008-01-31 CN CN2008100174614A patent/CN101224479B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530784A (en) * | 2018-12-10 | 2019-03-29 | 西安科技大学 | A kind of accurate separator of double sections shearing of pneumatic control |
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| CN101224479A (en) | 2008-07-23 |
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Granted publication date: 20100728 Termination date: 20130131 |