CN102039346B - Counter-tooth extrusion type fine-blanking die and fine-blanking method using the die - Google Patents
Counter-tooth extrusion type fine-blanking die and fine-blanking method using the die Download PDFInfo
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- CN102039346B CN102039346B CN201010512774.4A CN201010512774A CN102039346B CN 102039346 B CN102039346 B CN 102039346B CN 201010512774 A CN201010512774 A CN 201010512774A CN 102039346 B CN102039346 B CN 102039346B
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Abstract
The invention discloses an opposite teeth extruding type fine-blanking die and a fine-blanking method using the die. Opposite tooth-shaped plates and convex-concave dies are arranged on the upper side of an axial combining surface of the die; teeth cavity dies and anti-jacking plates are arranged on the lower side of the axial combining surface of the die; the opposite tooth-shaped plates and the teeth cavity dies are respectively provided with protruded annular gears, the section of the annular gear is of triangle tooth shape, and the contact lines of the annular gears and a blank are respectively arranged outside a blank upper workpiece outline and surround the outline of the workpiece. When a workpiece is blanked, an upper annular gear and a lower annular gear are respectively pressed into the workpiece to prevent a blank material from flowing in the horizontal direction, and the previous-period extrusion is carried out on the blank material so as to form a strong three dimension compressive stress inside the blank material, reduce the area of a tensile stress generated by the blank material in the blanking process, avoid the cracks, and eliminate sharp edges and burrs of the workpiece. By the invention, fine-blanked workpieces with good quality and high precision can be manufactured by utilizing a universal blanking device so as to promote the development of fine-blanking industry.
Description
Technical field
The present invention relates to a kind of fine blanking die, particularly a kind of subtend tooth squash type fine blanking die and adopt the precision punching method of this mould.
Background technology
Essence punching is that to utilize the mould of special construction directly on plate, to go out cross section quality good, the part that dimensional accuracy is high, be applicable to the production of the tabular part of high accuracy in enormous quantities, in industries such as clock and watch, camera, precision instrument, household electrical appliance, be used widely at present.Common fine blanking technology, adopt the powerful flanging fine blanking die of gear ring, in essence, break through in journey, at first the gear ring that section is lance tooth is pressed into blank, utilizes the mechanical stop effect of gear ring and the frictional force between blank material and die, stops the blank material along continuous straight runs to flow, make blank material in three-dimensional compressive stress state, in the situation that stretching does not appear in material, crackle does not realize that the stamping-out of blank material separates, thereby it is good to obtain cross section quality, the blanking part that dimensional accuracy is high.The powerful flanging fine blanking die of current gear ring, only the one side at mould arranges gear ring pressing plate prevention blank material bottom horizontal flow sheet, at another side, only utilize the frictional force of die and blank to stop the blank material bottom horizontal flow sheet, because frictional force is limited, therefore blank material can't produce enough large three-dimensional compression in the Pressing Deformation district, therefore blanking part cross section quality and the dimensional accuracy made are limited, especially this technique can't adapt to the stamping-out of thickness sheet material more than 10 millimeters, also be not suitable for the high strength of stamping-out strength degree more than 600 MPas, the inductile material, for example carbon 10 steel can only be no more than the sheet material of 3 millimeters by stamping-out thickness, therefore manufacture at present large thickness and high strength, the plate part of inductile material, can only be with machining, or recarburization and heat-treating methods processing after the low carbon materials Blanking Shaping, and the cost of machining is high, cycle is long, recarburization and heat-treating methods after the low carbon materials Blanking Shaping, complex process not only, cost is high, and the distortion that heat treatment causes is large, can significantly reduce the dimensional accuracy of part, therefore the powerful flanging fine blanking die of current gear ring can't adapt to the development need that essence is rushed industry.
Summary of the invention
The essence that is not suitable with heavy-gauge sheeting and high strength, inductile sheet material in order to solve the powerful flanging fine blanking die of current gear ring is rushed processing problems, the present invention proposes a kind of subtend tooth squash type fine blanking die and adopts the precision punching method of this mould, in essence, break through in journey, strengthened the three-dimensional compression in Pressing Deformation district, the essence that has solved heavy-gauge sheeting and high strength, inductile sheet material is rushed processing problems.The technical solution adopted in the present invention is as follows:
Subtend tooth squash type fine blanking die, comprise the subtend tooth plate, upside at from mould shaft to composition surface, be provided with subtend tooth plate punch-die and around the punch-die setting, and the subtend tooth plate be slidably matched with punch-die, downside at from mould shaft to composition surface, correspondence is provided with anti-top board and around anti-top board setting, and the band mark of mouth mould be slidably matched with anti-top board, the subtend tooth plate and with the mark of mouth mould respectively towards 2 surfaces of blank, and be respectively equipped with protruding subtend tooth plate gear ring and be with mark of mouth mould gear ring, the contact wire of two gear rings and blank lays respectively at the outside of workpiece profile on blank, and the profile of encirclement workpiece, and subtend tooth plate gear ring is relative with the crown with mark of mouth mould gear ring, punch-die is oppositely arranged with the end face that anti-top board contacts with workpiece.
Contact wire is workpiece stamping-out incision on blank; Two gear ring shape and size are identical and with respect to the axial engagement face symmetry of mould.
Anti-top board center is through hole, is provided with the punch axle shape, that be slidably matched with anti-top board in it, the position of punch and diameter, with position and the diameter in hole on workpiece, adapt, the punch-die center is through hole, forms the die of through hole shape, the position of die and size, adapt with punch.
Be provided with anti-plunger tip axle in die, anti-plunger tip axle and die are slidably connected.
In the various plans of establishment, the section of two gear rings is triangular tooth.
The precision punching method of subtend tooth squash type fine blanking die, subtend tooth plate and band mark of mouth mould are expressed to a certain degree in advance to blank, and punch-die moves downward and carries out essence and break through journey.
To a certain degree refer to that blank material outer shroud is expressed to plasticity exhaustion in advance, the effect of subtend tooth in addition, make that material almost can not lateral flow when die and punch-die move downward.
The technique effect that the present invention adopts technique scheme to obtain is:
Upside at from mould shaft to composition surface, be provided with punch-die and around punch-die and the subtend tooth plate that is slidably connected, downside at from mould shaft to composition surface, be provided with anti-top board and around anti-top board and the band mark of mouth mould that is slidably connected, subtend tooth plate and with the surface of mark of mouth mould, be respectively equipped with protruding subtend tooth plate gear ring and band mark of mouth mould gear ring, subtend tooth plate gear ring is relative with the crown with mark of mouth mould gear ring, can be in the process of punching press, by subtend tooth plate gear ring and with mark of mouth mould gear ring be pressed into the top of blank and below, stop the blank material in gear ring in the situation that be subject to the upper/lower die extruding, along continuous straight runs flows out the gear ring scope, thereby guarantee at the subtend tooth plate, punch-die and band mark of mouth mould, the relative extruding of anti-top board, in subtend tooth plate gear ring and situation about stopping with mark of mouth mould gear ring, the very large three-dimensional compression of the inner generation of blank material in gear ring, under the effect of powerful three-dimensional compression, the blank material of crush-zone inevitably can produce Plastic Flow, impel the numerical value of three-dimensional compression to reach unanimity, make the blank material of crush-zone in the hydrostatic pressure state, and there is maximum plastic deformation scope, the most important thing is, in essence, break through in journey, can take subtend tooth plate and band mark of mouth mould to be expressed in advance to a certain degree blank, punch-die moves downward again, guaranteed the powerful three-dimensional compressive stress state of deformed area, even blank is thicker or material plasticity is poor like this, also can essence go out high-quality product.Blank material in the extruding scope is under the hydrostatic pressure state, by the disengaging of the blank material stamping-out in workpiece profile scope blank, complete the fine-punching formation of workpiece, blank material can be produced to the region limits of tension in the scope of stamping-out incision minimum, thereby avoid cracking because of tension on the section surface of blank, affect cross section quality and the dimensional accuracy of workpiece.
Be provided with the punch of the axle shape be slidably matched in anti-top board, the position of punch and size, adapt with position and the size in hole on workpiece, be provided with the die of through hole shape in punch-die, the position of die and size, adapt with the position of punch, can in the scope of workpiece, carry out the stamping-out in hole.Punch and die synergy, blank material in the workpiece profile scope is pushed, sheared, in the situation that the blank material in the workpiece profile scope still bears the three-dimensional compression, blank material stamping-out in the profile scope in hole on workpiece is broken away to workpiece, can reduce the possibility that hole wall cracks, improve cross section quality and the dimensional accuracy in hole.
Be provided with anti-plunger tip axle in die, in punch and die break away from the process of workpiece by the blank material stamping-out in the profile scope in hole on workpiece, the end face of anti-plunger tip axle is the upper surface of the interior blank material of profile scope of extruded hole all the time, in the situation that the blank material in the profile scope in hole bears powerful, stable three-dimensional compression, blank material stamping-out in the profile scope in hole on workpiece is broken away to workpiece, can avoid hole wall to crack, improve to greatest extent cross section quality and the dimensional accuracy in hole.
Adopt subtend tooth squash type fine blanking die of the present invention and adopt the precision punching method of this mould, can use general pressing equipment, produce the essence that cross section quality is good, dimensional accuracy is high and rush workpiece, promote essence to rush the development of industry.
The accompanying drawing explanation
Accompanying drawing 1 is that subtend tooth squash type fine blanking die of the present invention is not established anti-plunger tip axle essence and broken through the structural representation of journey before starting.
Accompanying drawing 2 is that subtend tooth squash type fine blanking die of the present invention is established anti-plunger tip axle essence and broken through the structural representation of journey before starting.
Accompanying drawing 3 is that subtend tooth squash type fine blanking die essence of the present invention is broken through the structural representation of the 1st stage of journey while finishing.
Accompanying drawing 4 is that subtend tooth squash type fine blanking die essence of the present invention is broken through the structural representation of the 2nd stage of journey while finishing.
Sign implication in accompanying drawing is as follows:
1-subtend tooth plate, 11-subtend tooth plate gear ring, 2-punch-die, 21-die, 3-hole core waste material, 4-outer shroud waste material, 5-workpiece, the 51-circular arc angle of collapsing, 6-punch, 7-band mark of mouth mould, 71-band mark of mouth mould gear ring, the anti-top board of 8-, the anti-plunger tip axle of 9-, 10-blank.
The specific embodiment
Subtend tooth squash type fine blanking die of the present invention, structure as shown in Figure 1, upside at from mould shaft to composition surface, be provided with the subtend tooth plate 1 and the punch-die 2 that are slidably matched, subtend tooth plate 1 arranges around punch-die 2, downside at from mould shaft to composition surface, be provided with the band mark of mouth mould 7 and the anti-top board 8 that are slidably matched, band mark of mouth mould 7 arranges around anti-top board 8, subtend tooth plate 1 and with mark of mouth mould 7 respectively towards 2 surfaces of blank 10, and be respectively equipped with protruding subtend tooth plate gear ring 11 and be with mark of mouth mould gear ring 71, form a pair of subtend tooth, the section of 2 gear rings is triangular tooth, the crown of triangular tooth is respectively towards 2 surfaces of blank 10, the contact wire of 2 gear rings and blank 10 lays respectively at the outside of workpiece 5 profiles on blank 10, and the profile of encirclement workpiece 5, the profile of preferably being close to workpiece 5, subtend tooth plate gear ring 11 is identical with shape and size with mark of mouth mould gear ring 71 and with respect to the axial engagement face symmetry of mould, subtend tooth plate gear ring 11 is relative with the crown with mark of mouth mould gear ring 71, the shape and size of the end face that punch-die 2 contacts with blank 10 with anti-top board 8, with the shape and size of workpiece 5 profiles, adapt, punch-die 2 is oppositely arranged with the end face that workpiece 5 contacts with anti-top board 8, subtend tooth plate 1 is slidably matched with punch-die 2, band mark of mouth mould 7 is slidably matched with anti-top board 8.While processing workpiece 5 with holes, establish through hole in anti-top board 8, the punch 6 be slidably matched with anti-top board 8 inner surfaces that adds the axle shape in through hole, the position of punch 6, with the position in hole on workpiece 5, adapt, the shape and size of punch 6 sections, adapt with the shape and size of the profile in hole on workpiece 5, adds poroid die 21 in punch-die 2, the position of die 21, with the position of punch 6, adapt, the shape and size of die 21 sections, adapt with the shape and size of punch 6 sections.The essence of workpiece 5 is broken through journey and is divided into 3 stages:
The 1st stage, blank 10 is put into to the working region of mould, the relative position of subtend tooth plate 1 and punch-die 2 is fixed and is moved down, subtend tooth plate gear ring 11 and the outside at the workpiece profile of blank 10 with mark of mouth mould gear ring 71, contact and be pressed into the surface of blank 10, until gear ring all is pressed into blank, blank material in the gear ring scope is pressed into the subtend tooth plate gear ring 11 of blank and with the restriction of mark of mouth mould gear ring 71, lose the ability that certain along continuous straight runs flows out the gear ring scope, subtend tooth plate 1 continues to be displaced downwardly to subtend tooth plate 1 and is less than the thickness of blank 10 with the spacing of mark of mouth mould 7, punch-die 2 and anti-top board 8 retreat and make between subtend tooth plate 1 and punch-die 2 with respect to blank 10 respectively simultaneously, and slot milling between band mark of mouth mould 7 and anti-top board 8, blank material in the gear ring scope is subject to subtend tooth plate 1 and with the extruding of mark of mouth mould 7, in the situation that all bearing compression, three-dimensional produces plastic deformation, blank material in part gear ring scope flows in described slot milling, at the part blank material, flow in the process of described slot milling, part blank material and subtend tooth plate 1 inner surface and with mark of mouth mould 7 inner surfaces the frictional force larger because contact slide produces, under the effect of frictional force, be positioned at the blank material on top layer with subtend tooth plate 1 inner surface with the part of mark of mouth mould 7 inner surface contact slides, the speed that enters described slot milling is slack-off, make the edge of 5 two end faces of workpiece form the circular arc angle 51 of collapsing.The blank outer shroud is expressed to plasticity exhaustion in advance, the effect of subtend tooth in addition, the blank outer shroud loses the Radial Flow ability fully, makes when punch-die moves downward the blank almost can not lateral flow, just for reach powerful three-dimensional compressive stress state in deformed area, has created condition.
The 2nd stage, invariant position when subtend tooth plate 1 kept for the 1st stage finished, the downward extrusion blank 10 of punch-die 2, promote anti-top board 8 by blank material moves down simultaneously, punch-die 2, band mark of mouth mould 7 and 8 synergy of anti-top board, pushed, sheared the blank material in the gear ring scope, in the situation that the blank material in the gear ring scope still bears the three-dimensional compression, blank material stamping-out in workpiece 5 profile scopes is broken away to blank 10, complete the fine-punching formation of workpiece 5.While processing workpiece 5 with holes, punch 6 and die 21 synergy, blank material in workpiece 5 profile scopes is pushed, sheared, in the situation that the blank material in workpiece 5 profile scopes still bears the three-dimensional compression, hole core waste material 3 stamping-outs in the profile scope in hole on workpiece 5 are broken away to workpiece 5, complete the fine-punching formation in hole on workpiece 5.
The 3rd stage, subtend tooth plate 1 and punch-die 2 rising die sinkings, anti-top board 8 is released workpiece 5, takes out workpiece 5, completes essence and rushes work.
For cross section quality and the dimensional accuracy that improves hole wall on workpiece 5, die 21 is interior can add anti-plunger tip axle 9, structure as shown in Figure 2, the shape and size of anti-plunger tip axle 9 sections, with the shape and size of punch 6 sections, adapt, break through the 2nd stage of journey in essence, in punch 6 and die 21 break away from the process of workpiece 5 by the blank material stamping-out in the profile scope in hole on workpiece 5, the end face of anti-plunger tip axle 9 is the upper surface of the interior blank material of profile scope of extruded hole all the time, in the situation that the blank material in the profile scope in hole bears stable three-dimensional compression, blank material stamping-out in the profile scope in hole on workpiece 5 is broken away to workpiece, complete the fine-punching formation in hole on workpiece.
The present invention adopts and is provided with the punch 6 of axle shape and the subtend tooth squash type fine blanking die of anti-plunger tip axle 9, and the structural representation of punching course during punching press workpiece with hole 5, as shown in accompanying drawing 3 and accompanying drawing 4.
Subtend tooth squash type fine blanking die of the present invention and adopt the precision punching method of this mould, be not restricted to the described embodiments, and every principle of the present invention and structure utilized, through conversion and the formed technical scheme that replaces, all in protection scope of the present invention.
Claims (2)
1. adopt the precision punching method of subtend tooth squash type fine blanking die, it is characterized in that: subtend tooth squash type fine blanking die is set, comprise the subtend tooth plate, upside at from mould shaft to composition surface, be provided with subtend tooth plate punch-die and around the punch-die setting, and the subtend tooth plate be slidably matched with punch-die, downside at from mould shaft to composition surface, correspondence is provided with anti-top board and around anti-top board setting, and the band mark of mouth mould be slidably matched with anti-top board, the subtend tooth plate and with the mark of mouth mould respectively towards 2 surfaces of blank, and be respectively equipped with protruding subtend tooth plate gear ring and be with mark of mouth mould gear ring, the contact wire of two gear rings and blank lays respectively at the outside of workpiece profile on blank, surround the profile of workpiece and be close to the profile of workpiece, and subtend tooth plate gear ring is relative with the crown with mark of mouth mould gear ring, described two gear ring shape and size are identical and with respect to the axial engagement face symmetry of mould, the section of described two gear rings is triangular tooth, punch-die is oppositely arranged with the end face that anti-top board contacts with workpiece, when essence is rushed, subtend tooth plate and band mark of mouth mould are expressed to a certain degree in advance to blank, punch-die moves downward and carries out essence and break through journey, the essence of workpiece is broken through journey and is divided into 3 stages:
The 1st stage, blank is put into to the working region of mould, the relative position of subtend tooth plate and punch-die is fixed and is moved down, subtend tooth plate gear ring and the outside at the workpiece profile of blank with mark of mouth mould gear ring, contact and be pressed into the surface of blank, until gear ring all is pressed into blank, blank material in the gear ring scope is pressed into the subtend tooth plate gear ring of blank and with the restriction of mark of mouth mould gear ring, lose the ability that certain along continuous straight runs flows out the gear ring scope, the subtend tooth plate continues to be displaced downwardly to the subtend tooth plate and is less than the thickness of blank with the spacing of mark of mouth mould, punch-die and anti-top board retreat and make between subtend tooth plate and punch-die with respect to blank respectively simultaneously, and slot milling between band mark of mouth mould and anti-top board, blank material in the gear ring scope is subject to the subtend tooth plate and with the extruding of mark of mouth mould, in the situation that all bearing compression, three-dimensional produces plastic deformation, blank material in part gear ring scope flows in described slot milling, at the part blank material, flow in the process of described slot milling, part blank material and subtend tooth plate inner surface and with mark of mouth mould inner surface the frictional force larger because contact slide produces, under the effect of frictional force, be positioned at the blank material on top layer with subtend tooth plate inner surface with the part of mark of mouth mould inner surface contact slide, the speed that enters described slot milling is slack-off, make the edge of two end faces of workpiece form the circular arc angle of collapsing,
The 2nd stage, invariant position when the subtend tooth plate kept for the 1st stage finished, the downward extrusion blank of punch-die, promote anti-top board by blank material moves down simultaneously, punch-die, band mark of mouth mould and anti-top board synergy, pushed, sheared the blank material in the gear ring scope, in the situation that the blank material in the gear ring scope still bears the three-dimensional compression, blank material stamping-out in the workpiece profile scope is broken away to blank, complete the fine-punching formation of workpiece;
The 3rd stage, subtend tooth plate and punch-die rising die sinking, anti-top board is released workpiece, takes out workpiece, completes essence and rushes work.
2. precision punching method according to claim 1 is characterized in that: describedly to a certain degree refer to that blank material outer shroud is expressed to plasticity exhaustion in advance, the effect of subtend tooth in addition, make that material almost can not lateral flow when die and punch-die move downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512774.4A CN102039346B (en) | 2010-10-20 | 2010-10-20 | Counter-tooth extrusion type fine-blanking die and fine-blanking method using the die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512774.4A CN102039346B (en) | 2010-10-20 | 2010-10-20 | Counter-tooth extrusion type fine-blanking die and fine-blanking method using the die |
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| Publication Number | Publication Date |
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| CN102039346A CN102039346A (en) | 2011-05-04 |
| CN102039346B true CN102039346B (en) | 2014-01-01 |
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| CN201010512774.4A Expired - Fee Related CN102039346B (en) | 2010-10-20 | 2010-10-20 | Counter-tooth extrusion type fine-blanking die and fine-blanking method using the die |
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| CN102284596B (en) * | 2011-06-22 | 2014-02-26 | 重庆理工大学 | Closed Extrusion Fine Blanking Die Based on Floating Die Structure |
| CN102489604A (en) * | 2011-11-29 | 2012-06-13 | 苏州千仓精密电子有限公司 | Stamping die |
| CN102699091B (en) * | 2012-05-21 | 2014-10-01 | 中北大学 | A non-flash die for extruding aluminum alloy shell parts |
| CN102672050A (en) * | 2012-05-25 | 2012-09-19 | 武汉理工大学 | Precision stamping mold and rotary precision stamping forming method using same to process helical gears |
| US20140020534A1 (en) * | 2012-07-17 | 2014-01-23 | National Taiwan Ocean University | Fine hydro-blanking device |
| CN103212635B (en) * | 2013-04-17 | 2015-05-27 | 武汉理工大学 | Car transmission synchronizer gear ring fine blanking and deep drawing combined forming process and mold |
| TWI583456B (en) * | 2013-11-05 | 2017-05-21 | 王正平 | Trough-form fine blanking device |
| CN104001793A (en) * | 2014-06-13 | 2014-08-27 | 昆山市润苏物资有限公司 | Stamping die |
| CN105855354A (en) * | 2016-05-16 | 2016-08-17 | 常州大学 | Chain wheel blanking forming method and device |
| CN109834966B (en) * | 2019-04-08 | 2023-12-22 | 江苏扬力液压装备有限公司 | Servo pump control hydraulic fine blanking machine and hydraulic machining method thereof |
| CN111408651A (en) * | 2019-12-31 | 2020-07-14 | 江苏金鹏汽车座椅有限公司 | A single-process multi-process processing device |
| CN113305211B (en) * | 2021-05-13 | 2023-02-03 | 佛山市钜泽益精密科技有限公司 | Air conditioner sliding vane machining method |
| CN115634996A (en) * | 2022-10-21 | 2023-01-24 | 深圳市兴为实业有限公司 | Blanking method for stamping and shearing without collapsed edge |
| CN115815402B (en) * | 2022-11-30 | 2023-06-02 | 珠海菲高科技股份有限公司 | Soft metal rough and fine stamping integrated stamping die and machine tool |
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Granted publication date: 20140101 Termination date: 20181020 |