CN105855360A - Micropore blanking method - Google Patents
Micropore blanking method Download PDFInfo
- Publication number
- CN105855360A CN105855360A CN201610405528.6A CN201610405528A CN105855360A CN 105855360 A CN105855360 A CN 105855360A CN 201610405528 A CN201610405528 A CN 201610405528A CN 105855360 A CN105855360 A CN 105855360A
- Authority
- CN
- China
- Prior art keywords
- blank
- blanking
- holding pad
- concave die
- blanking area
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/01—Selection of materials
Abstract
Disclosed is a micropore blanking method. The micropore blanking method includes: making a concave die cavity on the top face of a lower die according to a blanking area of a target part, wherein profile of the concave die cavity is equal to profile d of the blanking area; placing a blank on the top face of the lower die, and enabling a blanking area of the blank to be coincident with the concave die cavity; enabling the undersurface of a pressing plate to be close to the blank, and applying pressure on the pressing plate to fix the blank; filling a convex die filling cavity with macromolecule powder; inserting a blanking head into the convex die filling cavity, pushing the blanking head in the direction of the blank, and pressing the blank to the blanking area through the macromolecule powder until the blanking area of the blank sheds off from the blank. The macromolecule powder provides balanced shearing force to the blank blanking area, so that the blank blanking ares is stressed in a balanced; shearing and blanking are performed along the concave die cavity, so that the blanking area can blank using the inner side of the concave die cavity as a boundary, blanking errors are related to the concave die cavity and are not highly related to centering degree of the blanking head and the convex die filling cavity, and the blanking errors can be reduced.
Description
Technical field
The present invention relates to field of machining, be specifically related to a kind of micropore blanking method.
Background technology
Machining industry at present, on part, perforate or gap typically have three kinds of forms: hole, cut
Cut hole, stamping-out.Boring is less compliant in the edge gap of part, and drilling diameter is by process equipment
Restriction；The cut quality in cutting hole is the highest, and affects part material performance, and efficiency is low.Stamping-out by
Having saving material and the energy than traditional mechanical for processing, efficiency is high, requires operator's technology not
High and applied by various moulds and can make machining these advantages of be beyond one's reach product, because of
And its purposes is more and more extensive.
Refer to Fig. 1, in prior art, generally blank 4 is placed on the end face of lower mold 5, lower mold 5
End face make and have concave die cavity, then, blank 4 is close in the bottom surface of holding pad 2, so that blank 4
Being relatively fixed with lower mold 5, holding pad 2 has the cavity running through its upper and lower surface, this cavity is used for
Placing drift 1, drift 1 is to be intended to the shape in stamping-out hole on blank 4 for cross section, and drift 1 is from binder
The cavity of plate 2 inserts and advances to blank 4 direction, is rushed blank 4 by the bottom surface of drift 1
Cut out, complete the stamping-out operation of blank 4.Firmly contact with blank 4 owing to using the bottom surface of drift 1
Stamping-out, therefore, the high-precision stamping-out of blank 4 to be completed, do not require nothing more than drift 1 bottom transverse cross section and
The cavity cross-section error of holding pad 2 is little, and, drift 1 is required higher with the centering of holding pad 2.
Complex procedures when this makes punch press process, and it is easily caused stamping-out error.
Summary of the invention
The technical problem to be solved in the present invention is to reduce stamping-out error.
To this end, according to first aspect, the embodiment of the invention discloses a kind of micropore blanking method, including
Following steps:
Blanking area profile d according to target part and overall size D of blank, make in holding pad
As profile be more than or equal to d, punch packing cavity less than or equal to d/2+D/2 and with punch filler
The pressure head that chamber matches；Blanking area according to target part makes concave die cavity at the end face of lower mold,
The profile of concave die cavity is equal with blanking area profile d；Cutting edge is produced on the top of concave die cavity；
Blank is placed on the end face of lower mold, and the border of the blanking area of blank overlaps with the cutting edge of concave die cavity；
After punch packing cavity aligns with the dead in line of concave die cavity, holding pad closes with lower mold；The end of holding pad
Blank is close in face, holding pad is applied pressure, is fixed blank；Height is filled to punch packing cavity
Molecule powder；Drift inserts punch packing cavity and also advances to blank direction, polymeric powder to blank to
Blanking area is suppressed, until the blanking area of blank comes off from blank, completes blank blanking area
Micropore stamping-out.
Further, also include: the end face in lower mold makes and base centered by the axis of concave die cavity
The screens portion that overall size D of material matches, screens portion is positioned at the lower section of holding pad；The end of holding pad
Blank is close in face, when holding pad is applied pressure, fixes so that screens portion carries out screens to blank.
Further, by the way of screw or bolt, fix holding pad and lower mold, to realize holding pad
Apply pressure, fix so that screens portion carries out screens to blank.
Further, polymeric powder uses high molecular polymer powder, and its composition is selected from polyethylene, gathers
Propylene, polrvinyl chloride, polystyrene, ethylene-vinyl acetate copolymer or acrylonitrile-butadiene-benzene second
A kind of or combination in any in alkene.
Technical solution of the present invention, has the advantage that
The micropore blanking method that the embodiment of the present invention provides, according to the blanking area of target part in lower mold
End face make concave die cavity, the profile of concave die cavity is equal with blanking area profile, and blank is placed on
The end face of lower mold, the blanking area of blank overlaps with concave die cavity, drift insert punch packing cavity and to
Blank direction advances, and blank is suppressed by polymeric powder to blanking area, until the blanking area of blank
Come off from blank, complete stamping-out.Owing to the polymeric powder in punch packing cavity is microparticle shape,
When suppressing blank to blanking area, polymeric powder provides to blank blanking area and compares equilibrium
Shearing force so that blank blanking area stress equalization, and shear stamping-out at Yan Aomoxingqiangchu,
Make the blanking area can be with concave die cavity inboard boundary stamping-out, therefore, stamping-out error and concave die cavity
Relevant, little with the alignment degree dependency of drift and punch packing cavity, thus, it is possible to reduce stamping-out by mistake
Difference.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is blanking apparatus schematic diagram in prior art；
Fig. 2 is that in embodiment, a kind of micropore blanking method starts structural representation during stamping-out；
Fig. 3 is that in embodiment, a kind of micropore blanking method completes structural representation during stamping-out；
Fig. 4 is a kind of micropore blanking method process flow schematic diagram in embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, " left ",
The orientation of the instruction such as " right ", " vertically ", " level ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of the description present invention and simplify description rather than instruction
Hint indication device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.Additionally, term " first ", " second ", " the 3rd " only use
In describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, art
Language " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to
It is to removably connect, or is integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Permissible
It is to be joined directly together, it is also possible to be indirectly connected to by intermediary, it is also possible to be the company of two element internals
Logical, can be wireless connections, it is also possible to be wired connection.For those of ordinary skill in the art
Speech, can understand above-mentioned term concrete meaning in the present invention with concrete condition.
As long as additionally, technical characteristic involved in invention described below difference embodiment that
The conflict of not constituting between this just can be combined with each other.
The present embodiment is mainly used in the full-size micropore stamping-out molding at 5mm goal of part,
Shaping blank can be the thin plates such as copper, aluminum, steel.Refer to Fig. 2 and Fig. 3, rush for the present embodiment micropore
Cut apart with a knife or scissors and begin and the micropore blanking apparatus schematic diagram of finish time.This micropore blanking apparatus includes: pressure head 1,
Double as the holding pad 2 of blank holder, polymeric powder 3 and lower mold 5 etc., make in holding pad 2 and have and pressure
The 1 punch packing cavity 21 matched, the profile of punch packing cavity 21 is optionally for being more than or equal to
D, less than or equal to d/2+D/2, wherein, d be the blanking area profile d, D of target part be blank 4
Overall size.
Refer to Fig. 1 and Fig. 2, lower mold 5 end face makes concave die cavity 51, places at holding pad 2
Time in lower mold 5, this concave die cavity 51 is positioned at the bottom of punch packing cavity 21, this concave die cavity 51
Top produce cutting edge, and, the blanking area shape of this concave die cavity 51 and target part is mutually
Joining, specifically, concave die cavity 51 is equal with blanking area profile d, in the present embodiment, alleged wheel
Wide equal refer to the most consistent and equivalently-sized, such as, be bowlder when blanking area, concave die cavity 51
With the equal diameters of blanking area, in the present embodiment, equivalently-sized allow certain error.From
And so that the border of blank blanking area can overlap with the cutting edge of concave die cavity 51, to realize cutting edge
The blanking area of blank is cut.
Fix, in a preferred embodiment, on the top of lower mold 5 to realize blank 4 is carried out screens
Face makes the screens that overall size D with blank 4 matches centered by the axis of concave die cavity 51
Portion's (reference not shown in figure), screens portion is positioned at the lower section of holding pad 2, in the present embodiment, institute
Claiming axis can be the axis through geometric center.
In the present embodiment, polymeric powder 3 is placed in punch packing cavity 21, at specific embodiment
In, polymeric powder 3 can use high molecular polymer powder, its composition selected from polyethylene, poly-third
Alkene, polrvinyl chloride, polystyrene, ethylene-vinyl acetate copolymer or acrylonitrile-butadiene-styrene (ABS)
Middle one or combination in any.
Can fix with lower mold 5 be connected to realize holding pad 2, in a particular embodiment, holding pad 2
Upper making has through hole or a screwed hole running through its upper and lower surface, then, and can be by screw or bolt
Mode fixes holding pad 2 and lower mold 5, to realize holding pad 2 is applied pressure.Thus, preferably
In embodiment so that screens portion carries out screens to blank 4 and fixes.It should be noted that concrete real
Execute in example, realize screens portion blank 4 is carried out screens fix time, blank 4 should at least part of position
In screens portion.
In the present embodiment, refer to Fig. 4, micropore blanking process is as follows:
Step S100, is seated in the concave die cavity 51 of the end face of lower mold 5 by blank 4.The most real
Executing in example, when in lower mold 5, making has screens portion, blank 4 should be at least partially disposed at lower mold 5
In screens portion, specifically, can be that the marginal area of blank 4 is positioned in screens portion.The most real
Execute in example, the central axis of blank 4 blanking area should with the central axes of concave die cavity 51,
So that the border of the blanking area of blank 4 overlaps with the cutting edge of concave die cavity 51, it should be noted that
This registration can allow certain coincidence error to exist, specifically can rule of thumb or be actually needed
Determine this range of error.
Step S200, is seated in the end face of lower mold 5 from top to bottom by holding pad 2.At specific embodiment
In, holding pad 2 and lower mold 5 can be fixed by the mode such as screw or bolt, thus realize to blank 4
There is provided pressure-pad-force, under the effect of this pressure-pad-force so that blank 4 can be secured in a press, to prevent
Blank 4 moves relative to lower mold 5.Certainly, in a preferred embodiment, when making in lower mold 5
During screens portion, after holding pad 2 is close to blank 4, when holding pad 2 is applied pressure, so that
Screens portion carries out screens to blank and fixes, to reach more preferable fixed effect.
Step S300, fills the polymeric powder 3 of predetermined amount to punch packing cavity 21.Specifically
In embodiment, the amount of polymeric powder 3 can be empirically determined.
Step S400, inserts drift 1 in punch packing cavity 21.In the present embodiment, refer to Fig. 2,
When starting stamping-out, drift 1 should be filled out drift 1 is inserted punch on polymeric powder 3
Behind material chamber 21, drift 1 is descending, thus promotes polymeric powder 3 descending, due to polymeric powder 3
For microparticle shape, therefore, during promoting polymeric powder 3 descending, polymeric powder 3 meeting
The shearing force comparing equilibrium is provided, then, according to the shape of concave die cavity 51 to the blanking area of blank 4
Shape starts by the cutting edge with concave die cavity 51 at shear action in this region (blank 4 blanking area)
Under carry out stamping-out.Refer to Fig. 3, complete the schematic diagram after stamping-out for blanking area.It should be noted that
In a preferred embodiment, it is fixed by screens portion due to the edge of blank 4 such that it is able to base
Material 4 offer two-way tension, it may be assumed that in forming process, blank 4 gabarit size is constant.
Step S500, rollback drift 1.Refer to Fig. 3, when the blanking area of blank 4 is from blank 3
After coming off, characterize blank 4 blanking area and be complete the micropore punching with concave die cavity 51 form fit
It is cut into type, now can be with rollback drift 1.
The micropore blanking method that the present embodiment provides, according to the blanking area of target part on the top of lower mold
Face makes concave die cavity, and the profile of concave die cavity is equal with blanking area profile, and blank is placed on lower mold
End face, the blanking area of blank overlaps with concave die cavity, and drift inserts punch packing cavity to blank
Direction advances, and blank is suppressed by polymeric powder to blanking area, until the blanking area of blank is from base
Material comes off, completes stamping-out.Due to, the polymeric powder in punch packing cavity is microparticle shape,
When suppressing blank to blanking area, polymeric powder provides to blank blanking area and compares equilibrium
Shearing force so that blank blanking area stress equalization, and shear stamping-out at Yan Aomoxingqiangchu,
Make the blanking area can be with concave die cavity inboard boundary stamping-out, therefore, stamping-out error and concave die cavity
Relevant, little with the alignment degree dependency of drift and punch packing cavity, thus, it is possible to reduce stamping-out by mistake
Difference.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (4)
1. a micropore blanking method, it is characterised in that comprise the steps:
Blanking area profile d according to target part and overall size D of blank (4), at holding pad
(2) making profile in is more than or equal to d, punch packing cavity (21) less than or equal to d/2+D/2
And the pressure head (1) matched with punch packing cavity (21)；Blanking area according to target part exists
The end face of lower mold (5) makes concave die cavity (51), and the profile of described concave die cavity (51) is with described
Profile d is equal in blanking area；Cutting edge is produced on the top of concave die cavity (51)；
Blank (4) is placed on the end face of lower mold (5), and the border of the blanking area of blank (4) is with recessed
The cutting edge of model cavity (51) overlaps；Punch packing cavity (21) and the axis weight of concave die cavity (51)
After closing alignment, holding pad (2) closes with lower mold (5)；Blank (4) is close in the bottom surface of holding pad (2),
Holding pad (2) is applied pressure, so that blank (4) to be fixed；To punch packing cavity (21)
Filled high polymer powder (3)；Drift (1) inserts punch packing cavity (21) and advances to blank direction,
Blank (4) is suppressed by polymeric powder (3) to blanking area, until the blanking area of blank (4)
Come off from blank (4), complete the micropore stamping-out of blank (4) blanking area.
2. micropore blanking method as claimed in claim 1, it is characterised in that also include:
End face in lower mold (5) makes and blank (4) centered by the axis of concave die cavity (51)
The screens portion that matches of overall size D, described screens portion is positioned at the lower section of described holding pad (2)；
Blank (4) is close in the bottom surface of holding pad (2), when holding pad (2) is applied pressure, so that
Screens portion carries out screens to blank (4) and fixes.
3. micropore blanking method as claimed in claim 2, it is characterised in that by screw or spiral shell
The mode of bolt fixes holding pad (2) and lower mold (5), described to holding pad (2) applying pressure to realize
Power, fixes so that screens portion carries out screens to blank (4).
4. the micropore blanking method as described in claim 1-3 any one, it is characterised in that described
Polymeric powder (3) uses high molecular polymer powder, and its composition is selected from polyethylene, polypropylene, gathers
One in vinyl chloride, polystyrene, ethylene-vinyl acetate copolymer or acrylonitrile-butadiene-styrene (ABS)
Or combination in any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405528.6A CN105855360A (en) | 2016-06-08 | 2016-06-08 | Micropore blanking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405528.6A CN105855360A (en) | 2016-06-08 | 2016-06-08 | Micropore blanking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105855360A true CN105855360A (en) | 2016-08-17 |
Family
ID=56677446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610405528.6A Pending CN105855360A (en) | 2016-06-08 | 2016-06-08 | Micropore blanking method |
Country Status (1)
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| CN (1) | CN105855360A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238756A1 (en) * | 2020-05-28 | 2021-12-02 | 浙江三花汽车零部件有限公司 | Machining device and control method therefor, and heat exchanger |
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| WO2021238756A1 (en) * | 2020-05-28 | 2021-12-02 | 浙江三花汽车零部件有限公司 | Machining device and control method therefor, and heat exchanger |
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