CN106694700A - Machining die for arc-shaped workpiece and machining method thereof - Google Patents

Machining die for arc-shaped workpiece and machining method thereof Download PDF

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Publication number
CN106694700A
CN106694700A CN201611179635.8A CN201611179635A CN106694700A CN 106694700 A CN106694700 A CN 106694700A CN 201611179635 A CN201611179635 A CN 201611179635A CN 106694700 A CN106694700 A CN 106694700A
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CN
China
Prior art keywords
arc
punch
pin
cavity plate
segmental arc
Prior art date
Application number
CN201611179635.8A
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Chinese (zh)
Inventor
顾朝上
Original Assignee
云南南天电子信息产业股份有限公司
云南南天信息设备有限公司
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Priority to CN201611179635.8A priority Critical patent/CN106694700A/en
Publication of CN106694700A publication Critical patent/CN106694700A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/02Die constructions enabling assembly of the die parts in different ways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/20Making tools by operations not covered by a single other subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves

Abstract

The invention provides a machining die for an arc-shaped workpiece and a machining method thereof. The machining die comprises a male die and a female die, and is characterized in that the male die is formed by stacking a plurality of male die pieces of which the lower ends are convex-arc-shaped and the upper ends serve as die shanks, and the female die is formed by stacking a plurality of female die pieces of which the upper ends are concave-arc-shaped and the lower ends serve as die seats. Not only are time and materials saved, but also the plurality of well machined male die pieces and female die pieces can be conveniently mounted in corresponding die shanks and grooves of a bending machine one by one, and fastened via bolts and nuts after being aligned and stacked, so that the male die and the female die can be easily mounted on the bending machine without a large-scale hoisting machine. The number of the male die pieces and the female die pieces can be increased or reduced according to the widths of workpieces to be machined, the convex arc shapes of the convex die pieces and the concave arc shapes of the concave die pieces are divided into basic arc-shaped segments, spring-back arc-shaped segments on two sides and straight segments on the outer sides, the radii of the basic arc-shaped segments are larger than those of the spring-back arc-shaped segments, and the spring-back angles at the tangent parts between the spring-back arc-shaped segments and the straight segments are controlled to be 0-5 degrees, so that after spring-back of the machined arc-shaped workpieces, the precise arc sizes cannot be changed, and follow-up installation is facilitated.

Description

A kind of arc-shaped workpiece processing mold and its processing method

Technical field

The present invention relates to a kind of mould, more particularly to a kind of arc-shaped workpiece processing mold and its processing method, belong to mould Design and processing technique field.

Background technology

All it is by lower cavity die and band with arc groove generally when the thin arc-shaped products such as arc clamshell or workpiece is processed The upper male mould of arc bump is completed, so that straight sheet metal is placed between punch and matrix, then coordinate forcing press by its Compacting camber, so as to as the clamshell of various equipment.Existing punch and matrix is respectively one integral piece, i.e., with block or column gold Category blank, processes one integral piece cavity plate, punch-pin, it is clear that this one integral piece cavity plate, convex respectively by machining equipments such as lathe, milling machines Mould, especially big part one integral piece cavity plate, punch-pin, not only processing difficulties, the expense that wastes time and energy material, and process one integral piece cavity plate, Punch-pin can be difficult to be sent to Working position, weight weight big because of volume, it is necessary to could be completed using special lifting appliance, while making When being processed with one integral piece cavity plate, punch-pin, arc-shaped product is easily set to produce arc to offset because of resilience after completion of processing, it is difficult to Accurately accurate measurement is obtained, the influence later stage installs or assembles.Therefore, it is necessary to be improved prior art.

The content of the invention

Easily processed it is an object of the invention to provide one kind, and arcuate structure is entirely capable of meeting arc-shaped product or workpiece Process technology requirement, is easily installed the arc-shaped workpiece die for processing on forcing press.

The present invention also provides the preparation method of above-mentioned arc-shaped workpiece die for processing.

First purpose of the invention is completed by following technical proposal:A kind of arc-shaped workpiece processing mold, including punch-pin And cavity plate, it is characterised in that some punch-pin pieces that punch-pin is convex by lower end, upper end is die shank are stacked and form, and cavity plate is by upper end For arcs of recesses, lower end form for some cavity plate pieces at mould bottom are stacked.

The convex of the punch-pin piece is divided into:The base segmental arc at middle part, positioned at the resilience segmental arc of base segmental arc both sides, position Straight section on the outside of resilience segmental arc;Wherein:The arc radius of base segmental arc are more than the arc radius of resilience segmental arc, to add The accurate measurement required for keeping is remained to after work arc-shaped workpiece resilience out.

Arc radius 0.5-6mm of the arc radius of the base segmental arc more than resilience segmental arc.

The punch-pin piece is provided with multiple through holes, after some punch-pin pieces are stacked, by the bolt and nut that are placed in through hole Some punch-pin pieces are fastened for a punch-pin entirety.

The segment length of the straight section is 10-20mm, and length is too small to influence formed precision, and length crosses conference and causes mould material Material is wasted, and increases mold weight.

The resilience segmental arc forms springback angle with straight section the tangent, and the angle of the springback angle is 0-5 °.

The arcs of recesses of the cavity plate piece is divided into:The base segmental arc at middle part, positioned at the resilience segmental arc of base segmental arc both sides, position Straight section on the outside of resilience segmental arc;Wherein:The arc radius of base segmental arc are more than the arc radius of resilience segmental arc, so as to The accurate measurement required for keeping is remained to after the arc-shaped workpiece resilience for processing.

Arc radius 0.5-6mm of the arc radius of the base segmental arc more than resilience segmental arc.

Multiple through holes are set on the cavity plate piece, it is tight by the bolt and nut that are placed in through hole after some cavity plate pieces are stacked Gu some cavity plate pieces are a cavity plate entirety.

The segment length of the straight section is 10-20mm, and length is too small to influence formed precision, and length crosses conference and causes mould material Material is wasted, and increases mold weight.

The resilience segmental arc forms springback angle with straight section the tangent, and the angle of the springback angle is 0-5 °.

Second object of the present invention is completed by following technical proposal:A kind of preparation side of arc-shaped workpiece processing mold Method, it is characterised in that comprise the following steps:

A, the base segmental arc that punch-pin convex and cavity plate arcs of recesses are set to middle part, positioned at the resilience arc of base segmental arc both sides Shape section, the straight section on the outside of resilience segmental arc, and resilience segmental arc and straight section the tangent are defined as springback angle, the springback angle Angle be 0-5 °, the length of straight section is set to 10-20mm;

B, the base segmental arc half that punch-pin convex, cavity plate arcs of recesses are determined according to the arc radius R workpiece of arc-shaped workpiece to be processed Footpath R mould bases, specifically by following determination:

As R workpiece > 80mm:R moulds base=R workpiece/1.25;

As R workpiece≤80mm:R moulds base=R workpiece;

The radius of base segmental arc is R mould bases, then the arc radius R moulds bullet=R moulds -0.5-6mm of resilience segmental arc;

C, punch-pin die shank size is determined according to compressor size, and cavity plate mould bottom size;

D, according to punch-pin, cavity plate size, number of openings and size are set;

E, the size determined according to step A-D, corresponding some punch-pin pieces and cavity plate piece are cut out with sheet metal;

When F, processing arc-shaped workpiece, some punch-pin pieces are stacked on the corresponding die shank of bender, while some cavity plate pieces are folded Put in the corresponding groove of bender, wherein:The stacked thickness of punch-pin, cavity plate is adapted with the width of arc-shaped workpiece to be processed;Will Some punch-pin, cavity plate are adjacent to after aligning integrally respectively, corresponding logical through stacked integral punch-pin, cavity plate with bolt respectively Kong Zhong, and with nut fasten after, metal sheet to be processed is put between punch-pin, cavity plate, routinely operate bender, that is, obtain Required arc-shaped workpiece.

The cutting of the step E is cut with conventional cleaver, preferably laser cutting machine cutting.

The present invention has following advantages and effect:Using such scheme, it is convenient to if punch-pin, cavity plate are arranged respectively to Dry punch-pin piece, cavity plate piece, not only easy to process, time saving material-saving, and some punch-pin pieces, the cavity plate piece that will easily can be processed Be installed to one by one in the corresponding die shank of bender, groove, and align it is stacked after tightly may be used with bolt and nut, you can will treat Processing metal sheet is put between punch-pin, cavity plate and is bent into required arc-shaped workpiece, without using Large-scale Hoisting machine can easily by Punch-pin, cavity plate are attached on bender, and can increase and decrease punch-pin piece, cavity plate piece quantity according to workpiece to be processed width, while will be convex The convex and cavity plate piece arcs of recesses of matrix be divided into middle part base segmental arc, the resilience segmental arc of both sides, the straight section in outside, and Make the arc radius of base segmental arc more than the arc radius of resilience segmental arc, while controlling resilience segmental arc with straight section the tangent Spring back angle is 0-5 °, it is ensured that after the arc-shaped workpiece resilience for processing, and will not also change its accurately accurate measurement, after convenience It is continuous to install.

Brief description of the drawings

Fig. 1 is punch-pin of the present invention, cavity die structure schematic diagram;

Fig. 2 is punch structure figure;

Fig. 3 is cavity die structure figure;

The workpiece sectional drawing that Fig. 4 is processed for prior art;

Fig. 5 is that the workpiece that the present invention is processed is broken into figure.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment is described further to the present invention.

The arc-shaped workpiece processing mold that the present invention is provided, including punch-pin 1 and cavity plate 2, its convex mould 1 are convex arc by lower end Shape, upper end form for some punch-pin pieces of die shank are stacked, some cavity plate pieces that cavity plate 2 is arcs of recesses by upper end, lower end is mould bottom It is stacked to form;The convex of the punch-pin piece is divided into:The base segmental arc 3 at middle part, positioned at the resilience segmental arc of the both sides of base segmental arc 3 4, positioned at the straight section 5 in the outside of resilience segmental arc 4;Wherein:Arc half of the arc radius of base segmental arc 3 more than resilience segmental arc 4 Footpath;Arc radius 0.5-6mm of the arc radius of the base segmental arc 3 more than resilience segmental arc 4;The punch-pin piece is provided with many Individual through hole 11, after some punch-pin pieces are stacked, some punch-pin pieces is fastened for a punch-pin by the bolt and nut 7 that are placed in through hole 1 is overall;The segment length of the straight section 5 is 10-20mm;The resilience segmental arc 4 forms springback angle 6, this time with the tangent of straight section 5 The angle for playing angle 6 is 0-5 °, as shown in Figure 1, Figure 2.

The arcs of recesses of the cavity plate piece is divided into:The base segmental arc 3 at middle part, positioned at the resilience segmental arc of the both sides of base segmental arc 3 4, positioned at the straight section 5 in the outside of resilience segmental arc 4;Wherein:Arc of the arc radius of base segmental arc 3 more than resilience segmental arc 4 Radius;Arc radius 0.5-6mm of the arc radius of the base segmental arc 3 more than resilience segmental arc 4;Set many on the cavity plate piece Individual through hole 21, is a cavity plate by the solid some cavity plate pieces of the bolt and nut tight 7 that are placed in through hole after some cavity plate pieces are stacked 2 is overall;The segment length of the straight section 5 is 10-20mm;The resilience segmental arc 4 forms springback angle 6, this time with the tangent of straight section 5 The angle for playing angle 6 is 0-5 °, such as Fig. 1, Fig. 3.

Embodiment

The preparation method of the arc-shaped workpiece processing mold that the present invention is provided, it is characterised in that comprise the following steps:

A, the base segmental arc 3 that the convex of punch-pin 1 and the arcs of recesses of cavity plate 2 are set to middle part, positioned at returning for the both sides of base segmental arc 3 Segmental arc 4 is played, positioned at the straight section 5 in the outside of resilience segmental arc 4, and resilience segmental arc 4 and the tangent of straight section 5 springback angle is defined as 6, the angle of the springback angle is 4 °, and the length of straight section 4 is set to 18mm;

B, it is 190mm according to the arc radius R workpiece of arc-shaped workpiece to be processed, determines the convex of punch-pin 1, the arcs of recesses of cavity plate 2 The radius R mould bases of base segmental arc 3, specifically by following determination:

As R workpiece > 80mm:R moulds base=R workpiece/1.25=190/1.25=152mm;The then arc of resilience segmental arc 4 half Footpath R moulds bullet=R moulds -0.5-6mm=152-3=149mm;

C, punch-pin die shank size is determined according to compressor size, and cavity plate mould bottom size;

D, according to punch-pin, cavity plate size, set number of openings be 4, size be Φ 16mm;

E, the size determined according to step A-D, if being cut out the cold-rolled steel sheet that thickness is 3.0mm with laser cutting machine corresponding Dry punch-pin piece and cavity plate piece, cutting section are smooth, such as Fig. 2, Fig. 3;

When F, processing arc-shaped workpiece, some punch-pin pieces are stacked on the corresponding die shank of bender, while some cavity plate pieces are folded Put in the corresponding groove of bender, wherein:Punch-pin 1, cavity plate 2 are stacked thickness and are adapted with the width of arc-shaped workpiece to be processed; Some punch-pin 1, cavity plate 2 are adjacent to respectively after aligning integrally, respectively with bolt 7 through stacked integral punch-pin, cavity plate pair In the through hole answered, and after being fastened with nut, by thickness to be processed for the cold-rolled steel sheet of 1.5mm is put between punch-pin 1, cavity plate 2, Bender is routinely operated, that is, obtains required arc-shaped workpiece 10, without skew, such as Fig. 5 after the resilience of arc-shaped workpiece 10.

Comparative example

By same thickness for the cold-rolled steel sheet of 1.5mm is put between conventional punch-pin, cavity plate, bender is routinely operated, i.e., Required arc-shaped workpiece 9 is obtained, design workpiece 8, such as Fig. 4 are deviate from after the resilience of arc-shaped workpiece 9.

Claims (8)

1. a kind of arc-shaped workpiece processing mold, including punch-pin and cavity plate, it is characterised in that punch-pin is that convex, upper end are by lower end Some punch-pin pieces of die shank are stacked to be formed, and some cavity plate pieces that cavity plate is arcs of recesses by upper end, lower end is mould bottom are stacked to be formed.
2. arc-shaped workpiece processing mold according to claim 1, it is characterised in that the convex of the punch-pin piece is divided into:In The base segmental arc in portion, positioned at the resilience segmental arc of base segmental arc both sides, the straight section on the outside of resilience segmental arc;Wherein:Base curve The arc radius of the arc radius more than resilience segmental arc of shape section;The arcs of recesses of the cavity plate piece is divided into:The base segmental arc at middle part, Positioned at the resilience segmental arc of base segmental arc both sides, the straight section on the outside of resilience segmental arc;Wherein:The arc of base segmental arc half Arc radius of the footpath more than resilience segmental arc.
3. arc-shaped workpiece processing mold according to claim 2, it is characterised in that the arc radius of the base segmental arc are big In the arc radius 0.5-6mm of resilience segmental arc.
4. arc-shaped workpiece processing mold according to claim 1, it is characterised in that the punch-pin piece is provided with multiple through holes, After some punch-pin pieces are stacked, it is a punch-pin entirety to fasten some punch-pin pieces by the bolt and nut that are placed in through hole;It is described Multiple through holes are set on cavity plate piece, after some cavity plate pieces are stacked, some cavity plate pieces is fastened by the bolt and nut that are placed in through hole It is a cavity plate entirety.
5. arc-shaped workpiece processing mold according to claim 2, it is characterised in that the segment length of the straight section is 10- 20mm。
6. arc-shaped workpiece processing mold according to claim 2, it is characterised in that the resilience segmental arc is tangent with straight section Place forms springback angle, and the angle of the springback angle is 0-5 °.
7. the preparation method of arc-shaped workpiece processing mold according to claim 1, it is characterised in that comprise the following steps:
A, the base segmental arc that punch-pin convex and cavity plate arcs of recesses are set to middle part, positioned at the resilience arc of base segmental arc both sides Shape section, the straight section on the outside of resilience segmental arc, and resilience segmental arc and straight section the tangent are defined as springback angle, the springback angle Angle be 0-5 °, the length of straight section is set to 10-20mm;
B, the base segmental arc half that punch-pin convex, cavity plate arcs of recesses are determined according to the arc radius R workpiece of arc-shaped workpiece to be processed Footpath R mould bases, specifically by following determination:
As R workpiece > 80mm:R moulds base=R workpiece/1.25;
As R workpiece≤80mm:R moulds base=R workpiece;
The radius of base segmental arc is R mould bases, then the arc radius R moulds bullet=R moulds -0.5-6mm of resilience segmental arc;
C, punch-pin die shank size is determined according to compressor size, and cavity plate mould bottom size;
D, according to punch-pin, cavity plate size, number of openings and size are set;
E, the size determined according to step A-D, corresponding some punch-pin pieces and cavity plate piece are cut out with sheet metal;
When F, processing arc-shaped workpiece, some punch-pin pieces are stacked on the corresponding die shank of bender, while some cavity plate pieces are folded Put in the corresponding groove of bender, wherein:The stacked thickness of punch-pin, cavity plate is adapted with the width of arc-shaped workpiece to be processed;Will Some punch-pin, cavity plate are adjacent to after aligning integrally respectively, corresponding logical through stacked integral punch-pin, cavity plate with bolt respectively Kong Zhong, and with nut fasten after, metal sheet to be processed is put between punch-pin, cavity plate, routinely operate bender, that is, obtain Required arc-shaped workpiece.
8. method according to claim 7, it is characterised in that the cutting of the step E is cut with conventional cleaver, preferably Laser cutting machine cuts.
CN201611179635.8A 2016-12-19 2016-12-19 Machining die for arc-shaped workpiece and machining method thereof CN106694700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611179635.8A CN106694700A (en) 2016-12-19 2016-12-19 Machining die for arc-shaped workpiece and machining method thereof

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Application Number Priority Date Filing Date Title
CN201611179635.8A CN106694700A (en) 2016-12-19 2016-12-19 Machining die for arc-shaped workpiece and machining method thereof

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202316765U (en) * 2011-11-08 2012-07-11 天津市福泰激光工艺加工有限公司 Plate type assembled convex-concave die
CN202845573U (en) * 2012-09-14 2013-04-03 武汉光谷机电科技有限公司 Adjustable arc-shaped die
CN103008463A (en) * 2012-12-12 2013-04-03 山西汾西重工有限责任公司 Medium-thick aluminum plate press forming mold
CN204934348U (en) * 2015-08-23 2016-01-06 内蒙古北方重工业集团有限公司 A kind of split blade type bending ram mould
CN205599711U (en) * 2016-01-25 2016-09-28 北京兰光微型机械厂 Radian clearance gauge mould that bends
US20160361744A1 (en) * 2015-06-15 2016-12-15 Toyota Boshoku Kabushiki Kaisha Press die apparatus
CN206519490U (en) * 2016-12-19 2017-09-26 云南南天电子信息产业股份有限公司 A kind of arc-shaped workpiece processing mold

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202316765U (en) * 2011-11-08 2012-07-11 天津市福泰激光工艺加工有限公司 Plate type assembled convex-concave die
CN202845573U (en) * 2012-09-14 2013-04-03 武汉光谷机电科技有限公司 Adjustable arc-shaped die
CN103008463A (en) * 2012-12-12 2013-04-03 山西汾西重工有限责任公司 Medium-thick aluminum plate press forming mold
US20160361744A1 (en) * 2015-06-15 2016-12-15 Toyota Boshoku Kabushiki Kaisha Press die apparatus
CN204934348U (en) * 2015-08-23 2016-01-06 内蒙古北方重工业集团有限公司 A kind of split blade type bending ram mould
CN205599711U (en) * 2016-01-25 2016-09-28 北京兰光微型机械厂 Radian clearance gauge mould that bends
CN206519490U (en) * 2016-12-19 2017-09-26 云南南天电子信息产业股份有限公司 A kind of arc-shaped workpiece processing mold

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