CN104858492A - Pre-indentation variable-speed shearing blanking method - Google Patents
Pre-indentation variable-speed shearing blanking method Download PDFInfo
- Publication number
- CN104858492A CN104858492A CN201510304262.1A CN201510304262A CN104858492A CN 104858492 A CN104858492 A CN 104858492A CN 201510304262 A CN201510304262 A CN 201510304262A CN 104858492 A CN104858492 A CN 104858492A
- Authority
- CN
- China
- Prior art keywords
- blank
- shearing
- gap
- bar
- cover half
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010008 shearing Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007373 indentation Methods 0.000 title abstract 4
- 238000005520 cutting process Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 6
- 208000006011 Stroke Diseases 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
Landscapes
- Shearing Machines (AREA)
Abstract
The invention relate to the metal blanking field, in particular to a pre-indentation variable-speed shearing blanking method. A blank is placed in a shearing die with an adjusted axial clearance, an adjusted radial clearance and an adjusted pre-indentation amount, a certain amount of pre-shearing is completed at a low speed, the remaining travel is completed at a high speed, and pre-indentation variable-speed shearing of the blank is achieved. Materials with various plastic properties can be sheared, and cross section quality is improved while shearing efficiency is guaranteed.
Description
Technical field
What the present invention relates to is a kind of technology of metal blanking field, specifically a kind of pre-impression speed change shearing blanking method.
Background technology
Shearing blanking technique, compared to traditional sawing and the blanking that fractures, has the feature that efficiency is high and stock utilization is high, is therefore widely applied.But the cross section quality that shearing blanking obtains exists some defects, such as section is ovality, and section is rough jagged etc.Traditional shearing blanking method is that stationary knife and moving knife are held tightly bar, then under the effect of moving knife, completes shear history.
For improving cross section quality, the new method of multiple technology for blanking is suggested, as Chinese patent literature CN1189403A and CN2322729Y all proposes combination shearing process, a kind of combined precision rod shearing machine is related in this technology, comprise combination shearing degree of depth adjustment member, clamping and cutting out section, promotion clamping and unclamp part, crank combination shearing part, be characterized in that the preshearing degree of depth is about the shearing degree of depth of 1/3 to 3/4, after preshearing terminates, slide block counter motion, thus obtain the vertical section in shearing section.But the preshearing degree of depth of 1/3 to the 3/4 shearing degree of depth, propose very high requirement to the plasticity of material, for the material that plasticity is poor, this kind of method is difficult to be suitable for.
Conventional pre-embossed V-shaped groove shearing blanking technique in production, by pre-embossed V-shaped groove, people, for causing stress concentration point, reduces shearing force, can obtain more smooth section simultaneously.Within 2010, be published in as Tang Yong etc. in the article " metal bar material precise blanking new technology and experimental study " on " China Mechanical Engineering " periodical and propose a kind of rotation and forge tired technology for blanking, this technique is divided into three steps: the first step, to get on the bus annular V shape groove processed at metal bar material, produce initial crack; Second step, determines the striking frequency of tired forging machine and hits Bit andits control curve, thus obtaining suitable load mode; 3rd step, by regulating the control of rotating speed realization to metal bar material striking frequency of frequency converter mair motor, realizing the control to hitting stroke by radial displacement governor motion and servomotor, thus reaching object metal bar material being implemented to reasonable load mode.This rotation forges tired function and carries out blanking to different-diameter different materials.But, before blanking, increase by one car annular V shape groove technique, shear efficiency reduced.
Summary of the invention
The present invention is directed to prior art above shortcomings, propose a kind of pre-impression speed change shearing blanking method, the material of various plastic properties can be sheared, while ensureing shear efficiency, promote cross section quality.
The present invention is achieved by the following technical solutions:
The present invention by by blank as axial gap, radial clearance and precompressed trace in the shearing die of adjustment, complete the shearing of preshearing amount with low speed, at a high speed to complete remaining stroke, the pre-impression speed change realizing blank is sheared.
Described blank adopts the coiled strip after bar or alignment.
Coiled strip after described bar or alignment is annealed state, and linearity is not more than 1:500.
Described shearing die, comprising: dynamic model and cover half, wherein: the relative cover half of dynamic model carries out moving up and down and realizes blank shearing, and the spacing of dynamic model and cover half is axial gap, and the gap between shearing die and blank is radial clearance.
Described axial gap, by adjustment dynamic model and the gap of cover half, make its control bar diameter 1% ?3%.
Described radial clearance, mould put into by the blank met the demands by linearity, reaches the cutting length of specifying, and then tightens up the gap between mould and blank, its monolateral gap is met: when bar diameter is greater than 20mm, monolateral gap value is less than or equal to 0.4mm; When bar diameter is less than 20mm, monolateral gap value is less than 2% of bar diameter.
Described precompressed trace, is set to the cutting stroke of 10% ~ 25%, described cutting stroke, to complete and shears the stroke that the process that is separated walks for moving knife starts action and be defined as cutting stroke to blank and bar.Before shearing, first shear one section of blank, thus determine its cutting stroke, and then according to this cutting stroke determination precompressed trace.
Described low speed refers to: 10 ~ 50mm/s; Described high speed refers to: more than 1m/s.
Technique effect
Compared with prior art, the technology of the present invention effect comprises:
1, shear the section obtained more smooth, improve cross section quality;
2, compared to traditional high speed shear baiting method, the method for pre-impression speed change shearing blanking can save energy to a certain extent.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Fig. 2 is moving knife trip map.
Fig. 3 is shearing die schematic diagram;
In figure: dynamic model 1, cover half 2, blank 3.
Schematic diagram is sheared in Fig. 4 precompressed.
Fig. 5 is the contrast schematic diagram of common shearing area figure and precompressed shearing area figure.Can find out that section euphotic belt is divided into euphotic belt and the euphotic belt in high speed shear stage in preshearing stage, and precompressed shear band section is more smooth than common shearing area figure.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 3, the shearing die that the present embodiment adopts comprises: dynamic model 1 and cover half 2, after during blank 3 is as cover half 1 and dynamic model 2, after the initial level spacing that arranges cover half 2 and dynamic model 1 and vertical interval, drive dynamic model 1 and cover half 2 to produce relative motion by hydraulic means, thus realize shearing.
The present embodiment comprises the following steps:
1, select diameter to be the 20cr bar of 15mm, condition of heat treatment is annealed state, and meets linearity and be not more than 1:500;
2, adjust the position relationship of fixed half and moving half, make mould axial gap be 0.3mm, namely bar diameter 2%;
3, bar is put into mould, regulating radial clearance, makes radial clearance be 0.3mm, namely bar diameter 2%;
4, first shear one section of blank, obtaining cutting stroke is 3mm, and determine that the preshearing degree of depth is 0.7mm, the preshearing degree of depth is about 23% of cutting stroke;
5, the shear rate of preshearing stage moving knife is 20mm/s, and remaining stroke stage shear rate is 1m/s;
6, shearing blanking is carried out according to above-mentioned moving knife stroke.
Embodiment 2
The present embodiment comprises the following steps:
1, select diameter to be No. 10 steel disk material of 20mm, condition of heat treatment is annealed state, carries out uncoiling alignment, after alignment linearity be not more than 1:500;
2, adjust the position relationship of fixed half and moving half, make mould axial gap be 0.3mm, namely bar diameter 1.5%;
3, bar is put into mould, regulating radial clearance, makes radial clearance be 0.3mm, namely bar diameter 1.5%;
4, first shear one section of blank, obtaining cutting stroke is 4mm, and determine that the preshearing degree of depth is 1mm, the preshearing degree of depth is about 25% of cutting stroke;
5, the shear rate of preshearing stage moving knife is 10mm/s, and remaining stroke stage shear rate is 1.1m/s;
6, shearing blanking is carried out according to above-mentioned moving knife stroke.
Embodiment 3
The present embodiment comprises the following steps:
1, select diameter to be No. 10 steel disk material of 20mm, condition of heat treatment is annealed state, carries out uncoiling alignment, after alignment linearity be not more than 1:500;
2, adjust the position relationship of fixed half and moving half, make mould axial gap be 0.3mm, namely bar diameter 1.5%;
3, bar is put into mould, regulating radial clearance, makes radial clearance be 0.3mm, namely bar diameter 1.5%;
4, first shear one section of blank, obtaining cutting stroke is 4mm, and determine that the preshearing degree of depth is 1mm, the preshearing degree of depth is about 25% of cutting stroke;
5, the shear rate of preshearing stage moving knife is 10mm/s, and remaining stroke stage shear rate is 1.2m/s;
6, shearing blanking is carried out according to above-mentioned moving knife stroke.
Claims (8)
1. a pre-impression speed change shearing blanking method, it is characterized in that, by blank being placed in axial gap, radial clearance and the precompressed trace shearing die through adjustment, completing the shearing of preshearing amount with low speed, to complete remaining stroke at a high speed, the pre-impression speed change realizing blank is sheared.
2. method according to claim 1, is characterized in that, described blank adopts the coiled strip after bar or alignment.
3. method according to claim 2, is characterized in that, the coiled strip after described bar or alignment is annealed state, and linearity is not more than 1:500.
4. method according to claim 1, is characterized in that, described shearing die, comprise dynamic model and cover half, wherein: the relative cover half of dynamic model carries out moving up and down and realizes blank shearing, and the spacing of dynamic model and cover half is axial gap, and the gap between cover half and blank is radial clearance.
5. the method according to claim 1 or 4, is characterized in that, described axial gap, by adjustment dynamic model and the gap of cover half, make its control bar diameter 1% ?3%.
6. the method according to claim 1 or 4, it is characterized in that, described radial clearance, mould put into by the blank met the demands by linearity, reach the cutting length of specifying, then tighten up the gap between mould and blank, its monolateral gap is met: when bar diameter is greater than 20mm, monolateral gap value is less than or equal to 0.4mm; When bar diameter is less than 20mm, monolateral gap value is less than 2% of bar diameter.
7. method according to claim 1, it is characterized in that, described precompressed trace, is set to the cutting stroke of 10% ~ 25%, described cutting stroke, to complete to blank and bar and shears the stroke that the process that is separated walks for moving knife starts action and be defined as cutting stroke.Before shearing, first shear one section of blank, thus determine its cutting stroke, and then according to this cutting stroke determination precompressed trace.
8. method according to claim 1, is characterized in that, described low speed refers to: 10 ~ 50mm/s; Described high speed refers to: more than 1m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304262.1A CN104858492B (en) | 2015-06-04 | 2015-06-04 | Pre- impression speed change shearing blanking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304262.1A CN104858492B (en) | 2015-06-04 | 2015-06-04 | Pre- impression speed change shearing blanking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104858492A true CN104858492A (en) | 2015-08-26 |
| CN104858492B CN104858492B (en) | 2017-03-01 |
Family
ID=53904900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304262.1A Active CN104858492B (en) | 2015-06-04 | 2015-06-04 | Pre- impression speed change shearing blanking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858492B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116235A (en) * | 2019-06-19 | 2019-08-13 | 郭亚亚 | A kind of intermetallic composite coating CNC shearing machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040804A (en) * | 1964-04-27 | 1966-09-01 | Nikex Nehezipari Kulkere | A process and device for cutting up metal bars and metal wires |
| CN1035971A (en) * | 1988-12-12 | 1989-10-04 | 西安交通大学 | Low stress impact shearing method |
| JPH0639623A (en) * | 1992-05-29 | 1994-02-15 | Nippon Spindle Mfg Co Ltd | Cutting blade feeding device for shearing machine |
| CN1189403A (en) * | 1997-12-26 | 1998-08-05 | 王怀章 | Combined precision rod shearing machine and its combination shearing method |
| CN2416988Y (en) * | 2000-03-31 | 2001-01-31 | 李荣祥 | Multi-function shearing machine |
| CN2472851Y (en) * | 2001-04-27 | 2002-01-23 | 魏庆同 | Press slot breaking machine |
| CN104174808A (en) * | 2014-08-04 | 2014-12-03 | 哈尔滨工程大学 | Automatic cold heading riveting machine |
-
2015
- 2015-06-04 CN CN201510304262.1A patent/CN104858492B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040804A (en) * | 1964-04-27 | 1966-09-01 | Nikex Nehezipari Kulkere | A process and device for cutting up metal bars and metal wires |
| CN1035971A (en) * | 1988-12-12 | 1989-10-04 | 西安交通大学 | Low stress impact shearing method |
| JPH0639623A (en) * | 1992-05-29 | 1994-02-15 | Nippon Spindle Mfg Co Ltd | Cutting blade feeding device for shearing machine |
| CN1189403A (en) * | 1997-12-26 | 1998-08-05 | 王怀章 | Combined precision rod shearing machine and its combination shearing method |
| CN2416988Y (en) * | 2000-03-31 | 2001-01-31 | 李荣祥 | Multi-function shearing machine |
| CN2472851Y (en) * | 2001-04-27 | 2002-01-23 | 魏庆同 | Press slot breaking machine |
| CN104174808A (en) * | 2014-08-04 | 2014-12-03 | 哈尔滨工程大学 | Automatic cold heading riveting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116235A (en) * | 2019-06-19 | 2019-08-13 | 郭亚亚 | A kind of intermetallic composite coating CNC shearing machine |
| CN110116235B (en) * | 2019-06-19 | 2020-04-07 | 南通达威机床有限公司 | Numerical control metal machining plate shearing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104858492B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100453204C (en) | Bars and tubes material unsymmetrical radial welding punched high performance precision blanking method | |
| CN103447774B (en) | A kind of spline housing processing technology | |
| CN204583887U (en) | A kind of reciprocating extrusion device preparing block body ultrafine grain metal material | |
| CN205032636U (en) | Panel welded nut cold -heading device | |
| CN102886413B (en) | Precise blanking process for sprocket tooth shape | |
| CN104476145B (en) | The manufacture method of pad | |
| CN203917446U (en) | Shear extrusion is prepared the device of ultrafine grain metal material repeatedly | |
| CN109434397A (en) | A kind of preparation method of superalloy annular forging expanding die | |
| CN104841792A (en) | Molding process of reverse cylinder workpiece having flange at end | |
| CN104858492B (en) | Pre- impression speed change shearing blanking method | |
| CN102513781A (en) | Hyper semiring forging process | |
| CN104889185A (en) | Semi-automatic molding machine for anchor ring | |
| CN102179464B (en) | Process for forming generator claw pole of vehicle | |
| CN103658213A (en) | Novel extrusion method for efficiently machining straight spur gear | |
| CN103691857B (en) | A kind of forging method of isotropic rectangle sectional axis forging | |
| CN102189142A (en) | Universal joint fork processing process | |
| CN103192016B (en) | Asymmetric large-diameter straight spur gear cold precision forming device | |
| CN101186000A (en) | Method for manufacturing steel strip combined oil-control ring wiper blade ring and backing ring material flat steel strip molding | |
| CN106041195B (en) | A kind of two-sided high speed shear method of the low stress of radial constraint metal bar material | |
| CN103878195A (en) | Magnesium alloy plate extrusion forming method | |
| CN103962401A (en) | Production method of low-defect high-strength steel wire | |
| CN104874665B (en) | Isothermal plasticity blanking shears material method | |
| CN103639219B (en) | A kind of once-forming method obtaining high-strength low carbon steel round head rivet | |
| CN103624313A (en) | Plate shearing machine | |
| CN103350121B (en) | Method for processing cup-shaped thin-walled member by using cold extrusion process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190227 Address after: 224100 No. 299 Nanxiang West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Province Patentee after: JIANGSU SUNWAY PRECISION FORGING Co.,Ltd. Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: Shanghai Jiao Tong University |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 224100 No. 299, Nanxiang West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Province Patentee after: Qianchao Senwei Co.,Ltd. Country or region after: China Address before: 224100 No. 299 Nanxiang West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Province Patentee before: JIANGSU SUNWAY PRECISION FORGING Co.,Ltd. Country or region before: China |