CN104826921B - Recycling mold and punching head and reuse method - Google Patents

Recycling mold and punching head and reuse method Download PDF

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Publication number
CN104826921B
CN104826921B CN201410854639.6A CN201410854639A CN104826921B CN 104826921 B CN104826921 B CN 104826921B CN 201410854639 A CN201410854639 A CN 201410854639A CN 104826921 B CN104826921 B CN 104826921B
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CN
China
Prior art keywords
sleeve pipe
drift
adjusting sleeve
detent
hole
Prior art date
Application number
CN201410854639.6A
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Chinese (zh)
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CN104826921A (en
Inventor
吴根龙
李泽东
安聪慧
冯擎峰
Original Assignee
浙江吉利汽车有限公司
浙江吉润汽车有限公司
浙江吉利控股集团有限公司
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by 浙江吉利汽车有限公司, 浙江吉润汽车有限公司, 浙江吉利控股集团有限公司 filed Critical 浙江吉利汽车有限公司
Priority to CN201410854639.6A priority Critical patent/CN104826921B/en
Publication of CN104826921A publication Critical patent/CN104826921A/en
Application granted granted Critical
Publication of CN104826921B publication Critical patent/CN104826921B/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
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/246Selection of punches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects

Abstract

The invention discloses a kind of recycling mold and punching head and reuse method, it is intended to solving existing mold and punching head can not utilize by secondary, can only scrap, cause waste, add the deficiency of cost of stamping after abrasion or fracture occurs in drift front portion.This invention includes drift body, drift body rear end is fixing connects drift base, drift base is provided with some said spacer mounting bores, drift base trailing flank is provided with quantitative slot, quantifying board it is movably installed with in quantitative slot, on drift body, movable sleeve is connected to promote sleeve pipe, promote and uniform connection have some push rods between sleeve pipe rear end and quantifying board, promote and be provided with return spring between sleeve pipe rear end and drift base, promote and be socketed with adjusting sleeve pipe between sleeve pipe front end and drift body, adjusting sleeve pipe outer wall is provided with detent mechanism, promote and on sleeve pipe, be axially arranged with several and the hole, location of detent mechanism adaptation, when detent mechanism connects the hole, location being positioned at foremost, adjusting sleeve pipe front end is concordant with drift body front end.

Description

Recycling mold and punching head and reuse method

Technical field

The present invention relates to a kind of mold and punching head, more specifically, it relates to a kind of can the mold and punching head that utilizes of secondary.

Background technology

Drift is a kind of parts used on cold punching die, and for workpiece is carried out perforating by punching operation, its material is very hard, and intensity is high, does manual work and wants fine, the most expensive.In machinery industry, the use of mold and punching head is very universal, but the anterior easily abrasion of drift drift in use for some time is even ruptured, thus causes drift to scrap, and causes waste, and these drift price comparisons are expensive, directly scrap and considerably increase cost of stamping.

Chinese patent publication No. CN103464575A, discloses a kind of Wear-resistant die punch, and including drift, die, cone with lead position set, drift cooperates with die, and cone is arranged in drift bottom center, leads position and overlaps and be arranged in die.Reduced by the friction of the drift during use of leading position set, thus reduce drift abrasion, extend drift service life.But drift can not utilize by secondary, can only scrap after abrasion or fracture occurs in drift front portion, cause waste, add cost of stamping.

Summary of the invention

Instant invention overcomes existing mold and punching head can not utilize by secondary, can only scrap after abrasion or fracture occurs in drift front portion, cause waste, adding the deficiency of cost of stamping, it is provided that a kind of recycling mold and punching head and reuse method, mold and punching head energy secondary utilizes, can also utilize 2-3 time after abrasion or fracture occurs in drift front portion, do not result in waste, greatly reduce cost of stamping, more economic benefit can be brought to enterprise.

nullIn order to solve above-mentioned technical problem,The present invention is by the following technical solutions: a kind of recycling mold and punching head,Including drift body,Drift body rear end is fixing connects drift base,Drift base is provided with several said spacer mounting bores,Drift base trailing flank is provided with quantitative slot,Quantifying board it is movably installed with in quantitative slot,Quantifying board thickness is not more than the quantitative slot degree of depth,On drift body, movable sleeve is connected to promote sleeve pipe,Promote and uniform connection have some push rods between sleeve pipe rear end and quantifying board,Push rod activity runs through drift base,Promote and be provided with return spring between sleeve pipe rear end and drift base,Promote and be socketed with adjusting sleeve pipe between sleeve pipe front end and drift body,Adjusting sleeve pipe outer wall is provided with detent mechanism,Promote and on sleeve pipe, be axially arranged with several and the hole, location of detent mechanism adaptation,When detent mechanism connects the hole, location being positioned at foremost, adjusting sleeve pipe front end is concordant with drift body front end.

When using for the first time, the detent mechanism on adjusting sleeve pipe is connected close in the hole, location of rear end, makes drift body front end expose, is used by drift floor installation on die setting base.When abrasion or fracture damage occurs in drift body front end, cut off the front end face after drift body nose wear or the part of fracture damage, and drift body shearing of polishing, it is ensured that drift body front end face is vertical with axis;Next step moves forward adjusting sleeve pipe, the detent mechanism on adjusting sleeve pipe is made to connect on the hole, location being positioned at foremost, promote adjusting sleeve pipe the most backward, adjusting sleeve pipe drives and promotes sleeve pipe, push rod, quantifying board to be moved rearwards by, until adjusting sleeve pipe front end is concordant with drift body front end, certain gap occurs between quantifying board leading flank and quantitative slot bottom surface;Choose the pad of suitable thickness again to be placed in the gap between quantifying board and quantitative slot and carry out thickness contrast, until choosing the equidistant pad between thickness and quantifying board leading flank and quantitative slot bottom surface;Under return spring effect, quantifying board front end face is fitted again and is abutted on quantitative slot bottom surface afterwards, then selected pad is connected on the trailing flank of drift base, is moved rearwards by adjusting sleeve pipe and makes the front end of drift body be completely exposed detent mechanism and the adaptation connection of hole, location.After connecting Upper gasket, the length of whole plunger chip die is consistent with the length of original plunger chip die, can be again mounted to drift base on die setting base use, a general mold and punching head can be reused 2-3 time, do not result in waste, greatly reduce cost of stamping, more economic benefit can be brought to enterprise.And adjusting sleeve pipe is socketed on drift body, when during adjusting sleeve pipe moves axially by drift body stuck and immovable time, now may determine that drift body axis offsets, drift body has bent, it is impossible to use.Adjusting sleeve pipe can be used to judge whether drift body can use, and uses easy to operate.

As preferably, push rod outer wall being provided with external screw thread near quantifying board end, quantifying board leading flank is provided with push rod link position the locating slot of a ring shape, is provided with locating piece in locating slot, locating piece is threaded on push rod.Adjusting sleeve pipe promote quantifying board move to adjusting sleeve pipe front end concordant with the front end of drift body after shearing after, rotate the locating piece being arranged in locating slot, the front end laminating making locating piece is connected on quantitative slot bottom surface, thus quantifying board is positioned, prevent quantifying board self-return under the effect of return spring, carry out thickness contrast in facilitating follow-up pad gap between quantifying board and quantitative slot and choose.

As preferably, detent mechanism includes spacing head, back-moving spring, adjusting sleeve pipe rear end face is provided with mounting groove, adjusting sleeve pipe is provided with the jack connected with mounting groove near rear end outer wall, spacing head upper end is ball coronal structure, the nearly lower end outer wall of spacing head rest is provided with positive stop lug boss, back-moving spring is socketed on the spacing head below positive stop lug boss, back-moving spring upper end is connected on positive stop lug boss, back-moving spring lower end is connected on mounting groove inwall, the grafting jack successively of the spacing head part above positive stop lug boss and hole, location.When adjusting sleeve pipe and the telescopic joint location of promotion, spacing head is ejected into outside hole, location under the effect of back-moving spring, when adjusting sleeve pipe needs mobile regulation, press inward against spacing head, spacing head is made to be connected to promote on internal surface of sleeve pipe, thus shed the position-limiting action of spacing head, facilitate the movement of adjusting sleeve pipe.

As preferably, promote and be communicated with so positioning the chute in hole on internal surface of sleeve pipe, spacing head can in chute slide anteroposterior.Adjusting sleeve pipe moves time limit potential head and slides in chute, makes the more laborsaving convenience of movement of adjusting sleeve pipe.

As preferably, promoting internal surface of sleeve pipe to be provided with helical rotation groove, hole, location connects with helical rotation groove and spacing head can slide at helical rotation groove internal coiling.Spacing head rotates in helical rotation groove thus realizes movable, even if spacing head is not connected to position in hole, adjusting sleeve pipe also will not move forward and backward automatically, optional position in the range of making adjusting sleeve pipe can be connected to helical rotation groove, and it being not only several positions being provided with hole, location, the regulation making adjusting sleeve pipe is more flexible and convenient.

As preferably, adjusting sleeve pipe inwall is provided with some cannelures.Cannelure reduces the contact area between adjusting sleeve pipe inwall and drift body outer wall, thus subtracts the frictional resistance descended in adjusting sleeve pipe moving process.

As preferably, the rounded structure of drift base, four said spacer mounting bores are uniform to be arranged on drift base, quantitative slot includes the circular trough portion of centre and uniform is arranged on circular trough portion four fan groove parts of a week, fan groove part connects with drift base outer wall, arranges a fan groove part between adjacent two said spacer mounting bores.Fan groove part connects the working place providing abundance to rotating locating blocks with drift base outer wall, and the rotation making locating piece is convenient.

A kind of reuse method of mold and punching head, the first step: after using a period of time, the mold and punching head of nose wear or fracture disassembles from mounting seat;Second step: regulation detent mechanism makes detent mechanism separate with hole, location, is then moved rearwards by adjusting sleeve pipe, makes drift body front end expose longer length, cut off drift body nose wear or the part of fracture damage;3rd step: the front end face after polishing drift body shearing, it is ensured that drift body front end face is vertical with axis;4th step: move forward adjusting sleeve pipe, the detent mechanism on adjusting sleeve pipe is made to connect the hole, location being positioned at foremost, promoting adjusting sleeve pipe the most backward, adjusting sleeve pipe drives and promotes sleeve pipe, push rod, quantifying board to be moved rearwards by, until adjusting sleeve pipe front end is concordant with drift body front end;5th step: rotate the locating piece being arranged in locating slot, makes the front end laminating of locating piece be connected on quantitative slot bottom surface;6th step: choose the pad of suitable thickness and be placed in the gap between quantifying board and quantitative slot and carry out thickness contrast, until choosing the equidistant pad between thickness and quantifying board leading flank and quantitative slot bottom surface;7th step: rotate backward locating piece, make locating piece be moved rearwards by and be moved fully in locating slot, under return spring effect, quantifying board front end face is fitted again and is abutted on quantitative slot bottom surface, then selected pad is connected on the trailing flank of drift base, is moved rearwards by adjusting sleeve pipe and makes the front end of drift body be completely exposed detent mechanism and the adaptation connection of hole, location.After connecting Upper gasket, the length of whole plunger chip die is consistent with the length of original plunger chip die, can be again mounted to drift base on die setting base use, a general mold and punching head can be reused 2-3 time, do not result in waste, greatly reduce cost of stamping, more economic benefit can be brought to enterprise.

As preferably, adjusting sleeve pipe is when promoting set in-pipe, and the spacing head of detent mechanism slide anteroposterior or spacing head in chute rotate along helical rotation groove.

Compared with prior art, the invention has the beneficial effects as follows: mold and punching head energy secondary utilizes, can also utilize 2-3 time after abrasion or fracture occurs in drift front portion, not result in waste, greatly reduce cost of stamping, more economic benefit can be brought to enterprise.

Accompanying drawing explanation

Fig. 1 is the structural representation of the drift base of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1 of the present invention;

Fig. 3 is the structural representation of the detent mechanism of the present invention;

Fig. 4 is the structural representation of the secondary utilization of the present invention;

In figure: 1, drift body, 2, drift base, 3, said spacer mounting bores, 4, quantitative slot, 5, quantifying board, 6, promote sleeve pipe, 7, push rod, 8, return spring, 9, adjusting sleeve pipe, 10, detent mechanism, 11, hole, location, 12, locating slot, 13, locating piece, 14, spacing head, 15, back-moving spring, 16, mounting groove, 17, jack, 18, positive stop lug boss, 19, chute, 20, helical rotation groove, 21, cannelure, 22, pad, 23, connect ring.

Detailed description of the invention

Below by specific embodiment, and combine accompanying drawing, technical scheme be further described specifically:

Embodiment: a kind of recycling mold and punching head (sees accompanying drawing 1, accompanying drawing 2), including drift body 1, drift body rear end is fixing connects round punch base 2, four said spacer mounting bores 3 it are laid with on drift base, drift base trailing flank is provided with quantitative slot 4, being movably installed with circular quantifying board 5 in quantitative slot, quantifying board thickness is not more than the quantitative slot degree of depth.Quantitative slot includes the circular trough portion of centre and uniform is arranged on circular trough portion four fan groove parts of a week, and fan groove part connects with drift base outer wall, arranges a fan groove part between adjacent two said spacer mounting bores.On drift body, movable sleeve is connected to promote sleeve pipe 6, promotes and uniform connection has four push rods 7 between sleeve pipe rear end and quantifying board, and respectively with four said spacer mounting bores of four push rods stagger setting.Push rod activity runs through drift base, it is provided with external screw thread near quantifying board end on push rod outer wall, quantifying board leading flank is provided with push rod link position the locating slot 12 of a ring shape, in locating slot, is provided with locating piece 13, locating piece is threaded on push rod, and locating piece thickness is less than clamping slot depth.Promoting and be provided with return spring 8 between sleeve pipe rear end and drift base, return spring is socketed on drift body, and return spring one end is connected to drift pan frontward end, and the other end is connected to promote sleeve pipe rear end.Promote and be socketed with adjusting sleeve pipe 9 between sleeve pipe front end and drift body, it is laid with two detent mechanism 10(on adjusting sleeve pipe outer wall and sees accompanying drawing 3), detent mechanism is arranged on the back-end location of adjusting sleeve pipe, promote and on sleeve pipe, be axially arranged with two rows and the hole, location 11 of detent mechanism adaptation, two registration holes are oppositely arranged, often row is provided with hole, four location, and when detent mechanism connects the hole, location being positioned at foremost, adjusting sleeve pipe front end is concordant with drift body front end.Detent mechanism includes spacing 14, back-moving spring 15, adjusting sleeve pipe rear end face is provided with mounting groove 16, adjusting sleeve pipe is provided with the jack 17 connected with mounting groove near rear end outer wall, spacing head upper end is ball coronal structure, the nearly lower end outer wall of spacing head rest is provided with positive stop lug boss 18, back-moving spring is socketed on the spacing head below positive stop lug boss, back-moving spring upper end is connected on positive stop lug boss, back-moving spring lower end is connected on mounting groove inwall, the grafting jack successively of the spacing head part above positive stop lug boss and hole, location.Adjusting sleeve pipe inwall is provided with some cannelures 21.Promoting on internal surface of sleeve pipe is communicated with so positioning the chute 19 in hole, spacing head can in chute slide anteroposterior.Promoting internal surface of sleeve pipe to be provided with helical rotation groove 20, hole, location connects with helical rotation groove and spacing head can slide at helical rotation groove internal coiling.

A kind of reuse method (seeing accompanying drawing 4) of mold and punching head, the first step: after using a period of time, the mold and punching head of nose wear or fracture disassembles from mounting seat;Second step: regulation detent mechanism makes detent mechanism separate with hole, location, is then moved rearwards by adjusting sleeve pipe, makes drift body front end expose longer length, cut off drift body nose wear or the part of fracture damage;3rd step: the front end face after polishing drift body shearing, it is ensured that drift body front end face is vertical with axis;4th step: move forward adjusting sleeve pipe, the detent mechanism on adjusting sleeve pipe is made to connect the hole, location being positioned at foremost, promoting adjusting sleeve pipe the most backward, adjusting sleeve pipe drives and promotes sleeve pipe, push rod, quantifying board to be moved rearwards by, until adjusting sleeve pipe front end is concordant with drift body front end;5th step: rotate the locating piece being arranged in locating slot, makes the front end laminating of locating piece be connected on quantitative slot bottom surface;6th step: choose the pad of suitable thickness and be placed in the gap between quantifying board and quantitative slot and carry out thickness contrast, until choosing the equidistant pad between thickness and quantifying board leading flank and quantitative slot bottom surface;7th step: rotate backward locating piece, make locating piece be moved rearwards by and be moved fully in locating slot, under return spring effect, quantifying board front end face is fitted again and is abutted on quantitative slot bottom surface, then selected pad is connected on the trailing flank of drift base, is moved rearwards by adjusting sleeve pipe and makes the front end of drift body be completely exposed detent mechanism and the adaptation connection of hole, location.On front side of drift body upper punch base, socket connects ring 23, and pad 22, drift base, connection ring three link together.After connecting Upper gasket, the length of whole plunger chip die is consistent with the length of original plunger chip die, can be again mounted to drift base on die setting base use, a general mold and punching head can be reused 2-3 time, do not result in waste, greatly reduce cost of stamping, more economic benefit can be brought to enterprise.And adjusting sleeve pipe is socketed on drift body, when during adjusting sleeve pipe moves axially by drift body stuck and immovable time, now may determine that drift body axis offsets, drift body has bent, it is impossible to use.Adjusting sleeve pipe can be used to judge whether drift body can use, and uses easy to operate.Adjusting sleeve pipe is when promoting set in-pipe, and the spacing head of detent mechanism slide anteroposterior or spacing head in chute rotate along helical rotation groove.

Embodiment described above is the one preferably scheme of the present invention, and the present invention not makees any pro forma restriction, also has other variant and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (9)

  1. null1. a recycling mold and punching head,Including drift body,It is characterized in that,Drift body rear end is fixing connects drift base,Drift base is provided with several said spacer mounting bores,Drift base trailing flank is provided with quantitative slot,Quantifying board it is movably installed with in quantitative slot,Quantifying board thickness is not more than the quantitative slot degree of depth,On drift body, movable sleeve is connected to promote sleeve pipe,Promote and uniform connection have some push rods between sleeve pipe rear end and quantifying board,Push rod activity runs through drift base,Promote and be provided with return spring between sleeve pipe rear end and drift base,Promote and be socketed with adjusting sleeve pipe between sleeve pipe front end and drift body,Adjusting sleeve pipe outer wall is provided with detent mechanism,Promote and on sleeve pipe, be axially arranged with several and the hole, location of detent mechanism adaptation,When detent mechanism connects the hole, location being positioned at foremost, adjusting sleeve pipe front end is concordant with drift body front end.
  2. Recycling mold and punching head the most according to claim 1, it is characterized in that, push rod outer wall is provided with external screw thread near quantifying board end, quantifying board leading flank is provided with push rod link position the locating slot of a ring shape, being provided with locating piece in locating slot, locating piece is threaded on push rod.
  3. Recycling mold and punching head the most according to claim 1, it is characterized in that, detent mechanism includes spacing head, back-moving spring, adjusting sleeve pipe rear end face is provided with mounting groove, adjusting sleeve pipe is provided with the jack connected with mounting groove near rear end outer wall, spacing head upper end is ball coronal structure, the nearly lower end outer wall of spacing head rest is provided with positive stop lug boss, back-moving spring is socketed on the spacing head below positive stop lug boss, back-moving spring upper end is connected on positive stop lug boss, back-moving spring lower end is connected on mounting groove inwall, spacing head part above positive stop lug boss grafting jack successively and hole, location.
  4. Recycling mold and punching head the most according to claim 3, is characterized in that, promotes on internal surface of sleeve pipe and is communicated with so positioning the chute in hole, spacing head can in chute slide anteroposterior.
  5. 5. according to the recycling mold and punching head described in claim 3 or 4, it is characterized in that, promoting internal surface of sleeve pipe to be provided with helical rotation groove, hole, location connects with helical rotation groove and spacing head can slide at helical rotation groove internal coiling.
  6. 6. according to the recycling mold and punching head described in claim 1 or 2 or 3 or 4, it is characterized in that, adjusting sleeve pipe inwall is provided with some cannelures.
  7. 7. according to the recycling mold and punching head described in claim 1 or 2 or 3 or 4, it is characterized in that, the rounded structure of drift base, four said spacer mounting bores are uniform to be arranged on drift base, quantitative slot includes the circular trough portion of centre and uniform is arranged on circular trough portion four fan groove parts of a week, fan groove part connects with drift base outer wall, arranges a fan groove part between adjacent two said spacer mounting bores.
  8. 8. a reuse method for the mold and punching head described in claim 1 to 7 any one, is characterized in that, the first step: after using a period of time, the mold and punching head of nose wear or fracture disassembles from mounting seat;Second step: regulation detent mechanism makes detent mechanism separate with hole, location, is then moved rearwards by adjusting sleeve pipe, makes drift body front end expose longer length, cut off drift body nose wear or the part of fracture damage;3rd step: the front end face after polishing drift body shearing, it is ensured that drift body front end face is vertical with axis;4th step: move forward adjusting sleeve pipe, the detent mechanism on adjusting sleeve pipe is made to connect the hole, location being positioned at foremost, promoting adjusting sleeve pipe the most backward, adjusting sleeve pipe drives and promotes sleeve pipe, push rod, quantifying board to be moved rearwards by, until adjusting sleeve pipe front end is concordant with drift body front end;5th step: rotate the locating piece being arranged in locating slot, makes the front end laminating of locating piece be connected on quantitative slot bottom surface;6th step: choose the pad of suitable thickness and be placed in the gap between quantifying board and quantitative slot and carry out thickness contrast, until choosing the equidistant pad between thickness and quantifying board leading flank and quantitative slot bottom surface;7th step: rotate backward locating piece, make locating piece be moved rearwards by and be moved fully in locating slot, under return spring effect, quantifying board front end face is fitted again and is abutted on quantitative slot bottom surface, then selected pad is connected on the trailing flank of drift base, is moved rearwards by adjusting sleeve pipe and makes the front end of drift body be completely exposed detent mechanism and the adaptation connection of hole, location.
  9. The reuse method of mold and punching head the most according to claim 8, is characterized in that, adjusting sleeve pipe is when promoting set in-pipe, and the spacing head of detent mechanism slide anteroposterior or spacing head in chute rotate along helical rotation groove.
CN201410854639.6A 2014-12-31 2014-12-31 Recycling mold and punching head and reuse method CN104826921B (en)

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CN201410854639.6A CN104826921B (en) 2014-12-31 2014-12-31 Recycling mold and punching head and reuse method

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Application Number Priority Date Filing Date Title
CN201410854639.6A CN104826921B (en) 2014-12-31 2014-12-31 Recycling mold and punching head and reuse method

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CN104826921B true CN104826921B (en) 2017-01-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106738053B (en) * 2016-12-30 2018-09-04 海宁英和金属制品有限公司 A kind of punching mechanism of press machine
CN108380732A (en) * 2017-08-29 2018-08-10 苏州东福电子科技股份有限公司 A kind of small type hole Special punching head
CN108942100A (en) * 2018-08-01 2018-12-07 冷水江天宝实业有限公司 Nut rushes the reproducing method of stick processing bolt red needle

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Publication number Priority date Publication date Assignee Title
DE10300818B4 (en) * 2003-01-10 2014-05-15 Groz-Beckert Kg Punching tool, in particular for green sheets
JP4358551B2 (en) * 2003-05-15 2009-11-04 黒田精工株式会社 Mounting structure for punching dies and punching dies
JP2005088057A (en) * 2003-09-18 2005-04-07 Amada Co Ltd Punch die
JP2006142337A (en) * 2004-11-19 2006-06-08 Amada Co Ltd Punch die
CN103537535B (en) * 2013-10-16 2016-05-18 无锡申宝汽车钢管有限公司 The punching die of replaceable fixed cover
CN203664479U (en) * 2013-12-11 2014-06-25 赣州伟嘉合金有限责任公司 Hard alloy die

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