CN108080509B - Drop hammer die cavity plate backing plate and application method - Google Patents
Drop hammer die cavity plate backing plate and application method Download PDFInfo
- Publication number
- CN108080509B CN108080509B CN201711290479.7A CN201711290479A CN108080509B CN 108080509 B CN108080509 B CN 108080509B CN 201711290479 A CN201711290479 A CN 201711290479A CN 108080509 B CN108080509 B CN 108080509B
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- China
- Prior art keywords
- plate
- cavity plate
- cavity
- backing plate
- top edge
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Classifications
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- 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
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
Abstract
The invention discloses a kind of drop hammer die cavity plate backing plates and processing technology, it is arranged between punch-pin and cavity plate, for shaping the radome fairing of depth depth, the cavity plate is equipped with the recess being embedded in for punch-pin, the recess top edge rounding angular radius r, including plate body, the plate body is bonded with the matching of cavity plate upper surface, the recess that the plate body corresponds to cavity plate is equipped with opening, the opening shape and recess top edge are always, and opening size is 1mm-2mm bigger than cavity plate top edge size, the top edge rounding angular radius R of the opening, radius of corner R > the r, the plate body side is equipped with the limited block for positioning it on cavity plate.Forming fillet R can be increased to the technological parameter size of needs by the cavity plate backing plate according to part forming technique, and when entering in concave die cavity, the tensile stress in forming process reduces material, walked material and be easy, part is not easy drawing crack, and qualification rate greatly improves.
Description
Technical field
The present invention relates to a kind of cavity plate backing plate more particularly to a kind of drop hammer die cavity plate backing plates.
Background technique
Radome fairing is common part in Aeronautics and Astronautics field, general using the contour forming that drops hammer.Some radome fairing Forming depths
Relatively deep, flange root r fillet is smaller, using drop hammer contour forming when, it is difficult that material walks material, it is not easy to enter in concave die cavity,
Part drawing crack is caused, qualification rate is very low.
Summary of the invention
It solves the above problems the object of the invention is that providing one kind, material is walked material and is easy, and concave die cavity is easily accessible
It is interior, part drawing crack, qualification rate high drop hammer die cavity plate backing plate and application method are not easily caused.
To achieve the goals above, the technical solution adopted by the present invention is that it is such: a kind of drop hammer die cavity plate backing plate, if
It sets between punch-pin and cavity plate, for shaping the radome fairing part of depth depth, the cavity plate is recessed equipped with being embedded in for punch-pin
It falls into, and the top edge rounding angular radius r that is recessed, including plate body, the plate body are bonded with the matching of cavity plate upper surface, the plate body is corresponding
The recess of cavity plate is equipped with opening, and always, and opening size is than cavity plate top edge size for the opening shape and recess top edge
Big 1mm-2mm, the top edge rounding angular radius R of the opening, the radius of corner R > r, the plate body side be equipped with by its
The limited block positioned on cavity plate.
As preferred: the limited block is 2 pieces, in plate body side and symmetrical.
A kind of drop hammer die application method of cavity plate backing plate, includes the following steps,
(1) according to the value for being processed into rounding angular radius r in the plate thickness t and cavity plate of radome fairing part, selection is suitable
Cavity plate backing plate；Wherein, plate thickness t is 0.8mm-3mm, rounding angular radius R=(8-12) t in cavity plate backing plate, when plate thickness
When degree is 3mm, R=8t, and as plate thickness reduces, the value of (8-12) increases, when plate thickness is 0.8mm, R=
12t；
Compare the value of R and r:
If (0.6~0.8) R < r < R, one piece of cavity plate backing plate is only selected；
If r < (0.6-0.8) R, muti-piece cavity plate backing plate transition is selected, respectively the 1st piece is arrived nth block, corresponding rounded corner half
The value of diameter R is R1-RN, the quantity and the specific rounding angular radius value of each cavity plate backing plate of required cavity plate backing plate are calculated according to the following formula
R1=(8-12) t,
RN=(0.6-0.8) RN-1
R=(0.6-0.8) RN；
(2) preform is carried out to part using punch-pin and cavity plate backing plate；
If one piece, the cavity plate backing plate of rounding angular radius R is placed on the cavity plate of drop hammer die, according still further to drop hammer die at
Shape process carries out gradually drop forming to part；
If N block, by rounding angular radius RNCavity plate backing plate be placed on the cavity plate of drop hammer die, according still further to drop hammer die at
Shape process carries out gradually drop forming to part, and replaces rounding angular radius RN-1Cavity plate backing plate repeat the above steps, directly
To having replaced all cavity plate backing plates；
(3) it takes cavity plate backing plate away, by part forming is final size using punch-pin and cavity plate.
Herein, in cavity plate rounding angular radius r value, actually with radome fairing part flange root rounding angular radius value phase
Together, value is different and different according to actual product, so in application process, the case where there are one pieces, muti-piece cavity plate backing plate.
Compared with the prior art, the advantages of the present invention are as follows: cavity plate backing plate can justify forming according to part forming technique
Angle R is increased to the technological parameter size of needs, and when entering in concave die cavity, the tensile stress in forming process subtracts such material
It is small, it walks material and is easy, part is not easy drawing crack.Walk to expect that sufficient preform part carries out secondary school shape again, qualification rate greatly improves.
Cavity plate backing structure is simple, and manufacture is easy, easy to use and operate reliable.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the assembling schematic diagram in use process of the present invention.
In figure: 1, punch-pin；2, cavity plate backing plate；3, cavity plate；4, limited block.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Embodiment 1: referring to Fig. 1 and Fig. 2, a kind of drop hammer die cavity plate backing plate 2 is arranged between punch-pin 1 and cavity plate 3, is used for
The radome fairing part of depth depth is shaped, the cavity plate 3 is equipped with the recess being embedded in for punch-pin 1, and the recess top edge is led
Radius of corner r, including plate body, the plate body are bonded with the matching of 3 upper surface of cavity plate, and the recess that the plate body corresponds to cavity plate 3 is set
There is an opening, always, and opening size is 1mm-2mm bigger than 3 top edge size of cavity plate for the opening shape and recess top edge, described
The top edge rounding angular radius R of opening, the radius of corner R > r, the plate body side are equipped with the limit for positioning it on cavity plate 3
Position block 4.
In the present embodiment: the limited block 4 is 2 pieces, in plate body side and symmetrical.
A kind of drop hammer die application method of cavity plate backing plate 2, includes the following steps,
(1) according to the value for being processed into rounding angular radius r in the plate thickness t and cavity plate 3 of radome fairing part, selection is closed
Suitable cavity plate backing plate 2；Wherein, plate thickness t is 0.8mm-3mm, and rounding angular radius R=(8-12) t in cavity plate backing plate 2 works as plate
When material is with a thickness of 3mm, R=8t, and as plate thickness reduces, the value of (8-12) increases, when plate thickness is 0.8mm, R
=12t；
Compare the value of R and r:
If (0.6~0.8) R < r < R, one piece of cavity plate backing plate 2 is only selected；
If r < (0.6-0.8) R, 2 transition of muti-piece cavity plate backing plate is selected, respectively the 1st piece is arrived nth block, corresponding rounded corner
The value of radius R is R1-RN, quantity and the specific rounding angle of each cavity plate backing plate 2 half of required cavity plate backing plate 2 are calculated according to the following formula
Diameter value
R1=(8-12) t,
RN=(0.6-0.8) RN-1
R=(0.6-0.8) RN；
(2) preform is carried out to part using punch-pin 1 and cavity plate backing plate 2；
If one piece, the cavity plate backing plate 2 of rounding angular radius R is placed on the cavity plate 3 of drop hammer die, according still further to drop hammer die
Forming process carries out gradually drop forming to part；
If N block, by rounding angular radius RNCavity plate backing plate 2 be placed on the cavity plate 3 of drop hammer die, according still further to drop hammer die
Forming process carries out gradually drop forming to part, and replaces rounding angular radius RN-1Cavity plate backing plate 2 repeat above-mentioned step
Suddenly, until having replaced all cavity plate backing plates 2；
(3) it takes cavity plate backing plate 2 away, by part forming is final size using punch-pin 1 and cavity plate 3.
Embodiment 2:
Assuming that plate thickness t is 0.8mm, rounding angular radius R=12t=9.6mm in cavity plate backing plate 2, radome fairing zero at this time
The value of part flange root rounding angular radius be 6.5m, still select r for 6.5m, be computed, r=(0.6-0.8) R is then only selected
With one piece of cavity plate backing plate 2；
Embodiment 3:
If r=5mm at this time, r < (0.6-0.8) R then selects 2 transition of muti-piece cavity plate backing plate, according to public affairs
Formula RN=(0.6-0.8) RN-1
R=(0.6-0.8) RN；
It is found that 2 pieces of cavity plate backing plates 2, respectively R1 and R2 need to be at least selected,
R1=12t=9.6mm；
R2=(0.6-0.8) * R1=(5.76-7.86)；
R=(0.6-0.8) * R2=5mm.
Claims (2)
1. a kind of drop hammer die application method of cavity plate backing plate, the drop hammer die is arranged between punch-pin and cavity plate with cavity plate backing plate,
For shaping the radome fairing part of depth depth, the cavity plate is equipped with the recess being embedded in for punch-pin, and the top edge that is recessed is led
Radius of corner r, the drop hammer die cavity plate backing plate includes plate body, and the plate body is bonded with the matching of cavity plate upper surface, the plate body
The recess of corresponding cavity plate is equipped with opening, and the opening shape is consistent with recess top edge, and opening size is than cavity plate top edge
The big 1mm-2mm of size, the top edge rounding angular radius R of the opening, and R > r, the plate body side are equipped with it on cavity plate
The limited block of positioning, it is characterised in that: include the following steps,
(1) according to the value for being processed into rounding angular radius r in the plate thickness t and cavity plate of radome fairing part, selection is suitable recessed
Die-cushion plate；Wherein, plate thickness t is 0.8mm-3mm, rounding angular radius R=(8-12) t in cavity plate backing plate, when plate thickness is
When 3mm, R=8t, and as plate thickness reduces, the value of (8-12) increases, when plate thickness is 0.8mm, R=12t；
Compare the value of R and r:
If (0.6-0.8) R < r < R, one piece of cavity plate backing plate is only selected；
If r < (0.6-0.8) R, muti-piece cavity plate backing plate transition is selected, respectively the 1st piece is arrived nth block, the top edge of corresponding opening
The value of rounding angular radius R is R1-RN, the quantity and each specific rounding of cavity plate backing plate of required cavity plate backing plate are calculated according to the following formula
Angular radius value
R1=(8-12) t,
RN=(0.6-0.8) RN-1
R=(0.6-0.8) RN；
(2) preform is carried out to part using punch-pin and cavity plate backing plate；
If one piece, the cavity plate backing plate of the top edge rounding angular radius R of opening is placed on the cavity plate of drop hammer die, according still further to falling
The forming process for hammering mould into shape carries out gradually drop forming to part；
If N block, by rounding angular radius RNCavity plate backing plate be placed on the cavity plate of drop hammer die, according still further to the forming work of drop hammer die
Process carries out gradually drop forming to part, and replaces rounding angular radius RN-1Cavity plate backing plate repeat the above steps, Zhi Daogeng
All cavity plate backing plates are changed；
(3) it takes cavity plate backing plate away, by part forming is final size using punch-pin and cavity plate.
2. the drop hammer die according to claim 1 application method of cavity plate backing plate, it is characterised in that: the limited block is 2
Block, in plate body side and symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290479.7A CN108080509B (en) | 2017-12-08 | 2017-12-08 | Drop hammer die cavity plate backing plate and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711290479.7A CN108080509B (en) | 2017-12-08 | 2017-12-08 | Drop hammer die cavity plate backing plate and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108080509A CN108080509A (en) | 2018-05-29 |
| CN108080509B true CN108080509B (en) | 2019-07-16 |
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ID=62174372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711290479.7A Active CN108080509B (en) | 2017-12-08 | 2017-12-08 | Drop hammer die cavity plate backing plate and application method |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202479319U (en) * | 2012-02-02 | 2012-10-10 | 哈尔滨飞机工业集团有限责任公司 | Thin sheet aluminum alloy pore frame blanking molding blanking die |
| CN202438619U (en) * | 2012-02-27 | 2012-09-19 | 福建福模精密技术有限公司 | Concave die capable of preventing products from being broken at curve positions in bending |
| CN103464561B (en) * | 2013-06-13 | 2015-11-25 | 上海飞机制造有限公司 | A kind of shaping dies of skin part for airplane |
| CN106270177A (en) * | 2015-05-29 | 2017-01-04 | 荆门诺恒科技有限公司 | FT15 missile launcher front fairing drawing die |
| CN105880350B (en) * | 2016-04-01 | 2017-12-05 | 武汉理工大学 | A kind of discontinuous point type blank holder of fine blanking die and its parameters design method |
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2017
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| Publication number | Publication date |
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| CN108080509A (en) | 2018-05-29 |
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