CN108043952A - A kind of design method of heavy punch piece progressive die - Google Patents

A kind of design method of heavy punch piece progressive die Download PDF

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Publication number
CN108043952A
CN108043952A CN201711470743.5A CN201711470743A CN108043952A CN 108043952 A CN108043952 A CN 108043952A CN 201711470743 A CN201711470743 A CN 201711470743A CN 108043952 A CN108043952 A CN 108043952A
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punch
mold
pin
die
design
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赵富祥
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赵富祥
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    • 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
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001Shaping combined with punching, e.g. stamping and perforating
    • 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
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • 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
    • B21D37/01Selection of materials
    • 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
    • B21D37/08Dies with different parts for several steps in a process
    • 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

Abstract

A kind of design method of heavy punch piece progressive die, Design of progressive die for metal is into single nine work step, that is, rushing fabrication hole → correcting → trimming → circular hole of jet-bedding → punching three, → one step of sky → rushes burr → coining → and falls shape;Working part employs quick-changing type and is decorated structure, convenient for the processing, adjustment and replacement of insert;Because part yield is big, mould and die accuracy is high, and to prevent mold from deforming in use, the upper and lower mould seat board of mold uses 45 steel modifier treatment;Concave template uses Cr12MoV mould steel, and quenching hardness is up to 56 60HRC;Other punch fixing plates, stripper and backing plate are using CrWMn mould steel, and quenching hardness is up to 56 58HRC;Punch and die plate insert are using wear-resisting and good toughness gate-in mold system steel DC53, and quenching hardness is up to 60 63HRC.Advantages of the present invention:Create huge economic value.Product Precision is improved, improves production efficiency, guarantee is provided to the increased quality of end product.

Description

A kind of design method of heavy punch piece progressive die
Technical field
The present invention relates to mold design field, a kind of more particularly to design method of heavy punch piece progressive die.
Background technology
The original mold of heavy punch piece is using common compound die, the punch process on 40 tons of punching machines, due to efficiency in production Low, the number of molds for forcing input is more, and labor strength is big, and accessory size uniformity is poor, and mold management trouble is replaced Also frequent with repairing, production efficiency is low, can not meet production requirement.
The content of the invention
The purpose of the invention is to improve production efficiency, a kind of design method of heavy punch piece progressive die has been provided.
The present invention provides a kind of design methods of heavy punch piece progressive die, it is characterised in that:Design of progressive die for metal is into single nine Work step, that is, rushing fabrication hole → correcting → trimming → circular hole of jet-bedding → punching three, → one step of sky → rushes burr → coining → and falls shape; Working part employs quick-changing type and is decorated structure, convenient for the processing, adjustment and replacement of insert;
Because part yield is big, mould and die accuracy is high, and to prevent mold from deforming in use, the upper and lower mould seat board of mold uses 45 steel modifier treatment;Concave template uses Cr12MoV mould steel, and quenching hardness reaches 56-60HRC;Other punch fixing plates, stripper And backing plate, using CrWMn mould steel, quenching hardness reaches 56-58HRC;Punch and die plate insert are using wear-resisting and good toughness Gate-in mold system steel DC53, quenching hardness reach 60-63HRC.
By the calculating to each work step blanking pressure of heavy punch piece, blanking pressure is 23 tons, and die shape size is 400*300, The punching production of progressive die is realized with 80 tons of automatic punching machines and automatic feeding;
Mold parts layout design:
Each step design of progressive die is carried out first, is then carried out mold general assembly G- Design, is then carried out each work step part again Design and mould parts material the standard components such as selection, mold clamp, guide part and spring selection;
The processing technology of progressive die:
Processing punch-pin, die plate insert and punch-pin and female die embedding are combined using slow feeding linear cutting bed and optical contour grinder The fixed plate of block;
Flash removed structure design:The sharpening number of cutting edge is reduced, extends the service life of mold.
Correcting nail via lower end design discharge groove on die plate insert:Ensureing the effectively high correcting degree in correcting hole, Sky knife is made into the lower part in hole, and the via for all correctings being followed closely in concave template lower end penetrates through, begin to rehearse hopper, convenient for every time again The waste material generated during feeding at correcting nail excludes, so as to protect mold without damage.
Grading die stamping operating principle:
Coiled strip is lifted on rack, is flattened the strip of feeding by evener, subsequently into roller automatic feed mechanism, The step pitch of roller automatic feed mechanism is adjusted to 36.05mm before this;Start by hand to send strip to the guiding of mold In mandril, until the head of strip covers 3 correcting pin hole cutting edge of die, 3 correcting pin holes of punching for the first time, Ran Houjin are at this moment carried out Row second, third time punching shape waste material, the 4th time to rush elongated slot, the 5th punching, the 6th room rushes hair the 7th time Thorn, the 8th this coining, the 9th cut-out, punching press terminate carrier and are separated with product, and cut-off carrier is leaked out from cavity plate slug hole, Product is blown part pin and is blown into Sheng part case, and auto-feeder is adjusted to automatic state at this time and enters continuous punching.
Design of progressive die for metal uses single nine station, that is, rushes two correcting holes → 1 → trimming of trimming 2 → and rush elongated slot → punching four Circular hole → room → rushes burr → coining → cut-out;
1st station:Correcting pin hole, i.e. fabrication hole are rushed, this hole correcting billot of follow-up each station;
2nd, 3 stations:Two leftover bits and pieces of material of product is washed away respectively, and product shape shapes substantially;
4th station:Go out the elongated slot at product center;
5th station:3.25 holes of 3- and 4.5 holes on product are gone out, hole site requirement is stringent on product, therefore to be arranged in same work It is rushed out in position;
6th station:Room;
7th station:Rush burr;
8th station:Coining;It is imprinted in carrier connecting portion, plays the role of this part burr;
9th station:Cut-out obtains product.
The design of heavy punch piece progressive die structure illustrates:
Feeding Mechanism Design:Feed mechanism uses roller self-feeding, in order to reduce strip in feeding to molding surface Friction, and burr mechanism is rushed higher than cavity plate face, feeding must be suspended in the progress of cavity plate plane certain altitude, and mold uses Strip is lifted transmission by floating guiding stock pin guide, and two fabrication holes, each work step pilot pin are designed in the both sides that strip is sent into Fine positioning transmits the processes such as punching and blanking between each station;
Die main body structure design:In order to ensure the precision of product, this mold using four groups of 32mm precise ball guide sleeve and lead Column is oriented to, and has the interference volume of 0.01-0.02mm between guide post and guide sleeve;Upper and lower die holder using carbon structural steels 45#, is adjusted Matter hardness is 24-28HRC, to enhance the rigidity of mold and stability;
Guiding mechanism designs:It is very high to the guiding accuracy requirement of mold since mold is used for fine-edge blanking, therefore in mold Portion is separately provided with the precise ball guide sleeve of four sets of outer diameter 20mm and guide post carries out auxiliary guiding, and guiding role is played to stripper, The blade clearance of each punch-pin, cavity plate is effectively guaranteed, so as to play certain protective effect to punch-pin;
The design of stripper:Stripper use spring-loaded stripping device, not only act as binder and discharging effect, and play punch-pin, The guiding role of pilot pin, therefore the material selection Japan cold work die steel SKD11 of stripper, heat treatment hardness 58- 62HRC.This material belongs to high-wearing feature cold work tool steel, and this steel has very high hardness, wearability and compression strength, quenches Permeability, heat treatment deformation is small.
Punch-pin and Die Design:In order to improve the production efficiency of mold and be conveniently replaceable vulnerable part, this mold is using fast Formula punch-pin is changed, fixes special-shaped punch-pin by pressing plate and screw, the fit clearance of punch-pin and punch retainer is less than 0.03mm, this Mode is conducive to punch-pin and imports naturally in stripper, when dismantling or replacing punch-pin, unclamps screw, punch-pin easily takes out, punch-pin Material uses DC53 cold work die steels, and heat treatment hardness reaches 60-62HRC, and the wearability and machinability of this material are more superior, It is suitble to the punch-pin for doing high speed blanking, in addition, being to prevent scrap rising, high pressure venthole is also provided on the punch-pin of this mold, Ensure that sweeping away the waste material come falls into cavity plate, and discharge in time, for the ease of manufacturing and repairing, the cavity plate of this mold all uses Formula structure is mutually spelled, i.e., cavity plate mold insert is fixed on die block, easy to repair and sharpening.Material also uses DC53 cold-working moulds Has steel, heat treatment hardness reaches 61-63HRC;
Punch retainer and die block design:It to regularly replace and repair in view of punch, pilot pin and die plate insert, Gu Fixed board selects high chrome alloy steel Cr12MoV, and heat treatment hardness for 56-60HRC. Cr12MoV have higher wearability, Quenching degree, hardenability, obdurability, thermal stability, compression strength and Light deformation, high comprehensive performance and extensive adaptability.
Punch retainer backing plate, stripper backing plate, the selection of die block backing material:Since mold is pressed through in high-speed punching Cheng Zhong, backing plate subject impact force and compression repeatedly, and material used will have good impact resistance, intensity and hardness, So the material selection Cr12 of backing plate, heat treatment hardness 53-55HRC, this material has very high toughness, meets Requirement;
Blade clearance and fit clearance design:Product material is 1.5mm Q235 steel plates, and punch and matrix blade clearance is two-sided 0.16mm;The fit clearance of punch-pin and fixed plate is two-sided 0.03mm;The fit clearance of punch-pin and stripper is two-sided 0.02mm; The fit clearance of cavity plate and fixed plate is two-sided 0.01mm;The fit clearance of pilot pin and stripper is two-sided 0.01mm;It is oriented to The fit clearance of mandril and die block is two-sided 0.03mm;
Other structures part designs:The design of spring-loaded stripping device, spring-loaded stripping device include stripper, unloading bolt and discharging Spring.This mold unloading bolt is symmetrical, and position arrangement is reasonable;Using the shape that casing and soket head cap screw are combined Formula, this structure can ensure that all casing length sizes are consistent, controlled by being ground, not only can guarantee stripper and upper and lower mould The depth of parallelism requirement of plate, and position-limiting action is played to stripper.Meanwhile after punch-pin sharpening, reconditioning casing size makes to unload Certain relative position is kept between flitch and punch-pin, furthermore, as long as such structure screws out plug screw, spring can be out of die holder It takes out, spring-loaded stripper can not move freely therewith, in the case where not removing stripper, can also sharpen convex Mould;
Mandril design is oriented to, this mold is equipped with 8 groups of guiding mandrils altogether, ensures that billot is sent into steady, unobstructed and ground and is continuously fed to, Material is using alloy tool steel CrWMn;
/V post design:This device protects cutting edge, loaded between upper and lower template, the minimum of mold is controlled to close for molding /V Close height.Control compresses strip limited post, and 5 groups of limited posts are installed on concave template, it is small to be higher by cavity plate face size ratio material thickness 0.05mm so can keep stripper not only to flatten strip but also avoid damaging by pressure strip;
Rush burr process step design:Progressive die is secondary or so in 50,000 mould of punching press, and the cutting edge of punch and matrix has certain abrasion, product Burr can be generated in punching face, in order to improve mold production efficiency and reduce mold sharpening and the number replaced, is increased in mold Rush burr process.Its operation principle is that shear surface oral area is pressed into 0.1X45 ° of chamfering, can burr be effectively pressed into work Part, and workpiece appearance and use are not influenced.
Advantages of the present invention:
The design method of heavy punch piece progressive die of the present invention, creates huge economic value.Product Precision is improved, is carried High production efficiency, guarantee is provided to the increased quality of end product.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail:
Fig. 1 is front view;
Fig. 2 is left view;
Fig. 3 is top view;
Fig. 4 is bottom view;
Fig. 5 is die stock layout figure.
Specific embodiment
Embodiment 1
Present embodiments provide a kind of design method of heavy punch piece progressive die, it is characterised in that:Design of progressive die for metal is into single nine work Step, that is, rushing fabrication hole → correcting → trimming → circular hole of jet-bedding → punching three, → one step of sky → rushes burr → coining → and falls shape;Work Quick-changing type is employed as part and is decorated structure, convenient for the processing, adjustment and replacement of insert;
Because part yield is big, mould and die accuracy is high, and to prevent mold from deforming in use, the upper and lower mould seat board of mold uses 45 steel modifier treatment;Concave template uses Cr12MoV mould steel, and quenching hardness reaches 56-60HRC;Other punch fixing plates, stripper And backing plate, using CrWMn mould steel, quenching hardness reaches 56-58HRC;Punch and die plate insert are using wear-resisting and good toughness Gate-in mold system steel DC53, quenching hardness reach 60-63HRC.
By the calculating to each work step blanking pressure of heavy punch piece, blanking pressure is 23 tons, and die shape size is 400*300, The punching production of progressive die is realized with 80 tons of automatic punching machines and automatic feeding;
Mold parts layout design:
Each step design of progressive die is carried out first, is then carried out mold general assembly G- Design, is then carried out each work step part again Design and mould parts material the standard components such as selection, mold clamp, guide part and spring selection;
The processing technology of progressive die:
Processing punch-pin, die plate insert and punch-pin and female die embedding are combined using slow feeding linear cutting bed and optical contour grinder The fixed plate of block;
Flash removed structure design:The sharpening number of cutting edge is reduced, extends the service life of mold.
Correcting nail via lower end design discharge groove on die plate insert:Ensureing the effectively high correcting degree in correcting hole, Sky knife is made into the lower part in hole, and the via for all correctings being followed closely in concave template lower end penetrates through, begin to rehearse hopper, convenient for every time again The waste material generated during feeding at correcting nail excludes, so as to protect mold without damage.
Grading die stamping operating principle:
Coiled strip is lifted on rack, is flattened the strip of feeding by evener, subsequently into roller automatic feed mechanism, The step pitch of roller automatic feed mechanism is adjusted to 36.05mm before this;Start by hand to send strip to the guiding of mold In mandril, until the head of strip covers 3 correcting pin hole cutting edge of die, 3 correcting pin holes of punching for the first time, Ran Houjin are at this moment carried out Row second, third time punching shape waste material, the 4th time to rush elongated slot, the 5th punching, the 6th room rushes hair the 7th time Thorn, the 8th this coining, the 9th cut-out, punching press terminate carrier and are separated with product, and cut-off carrier is leaked out from cavity plate slug hole, Product is blown part pin and is blown into Sheng part case, and auto-feeder is adjusted to automatic state at this time and enters continuous punching.
Design of progressive die for metal uses single nine station, that is, rushes two correcting holes → 1 → trimming of trimming 2 → and rush elongated slot → punching four Circular hole → room → rushes burr → coining → cut-out;
1st station:Correcting pin hole, i.e. fabrication hole are rushed, this hole correcting billot of follow-up each station;
2nd, 3 stations:Two leftover bits and pieces of material of product is washed away respectively, and product shape shapes substantially;
4th station:Go out the elongated slot at product center;
5th station:3.25 holes of 3- and 4.5 holes on product are gone out, hole site requirement is stringent on product, therefore to be arranged in same work It is rushed out in position;
6th station:Room;
7th station:Rush burr;
8th station:Coining;It is imprinted in carrier connecting portion, plays the role of this part burr;
9th station:Cut-out obtains product.
The design of heavy punch piece progressive die structure illustrates:
Feeding Mechanism Design:Feed mechanism uses roller self-feeding, in order to reduce strip in feeding to molding surface Friction, and burr mechanism is rushed higher than cavity plate face, feeding must be suspended in the progress of cavity plate plane certain altitude, and mold uses Strip is lifted transmission by floating guiding stock pin guide, and two fabrication holes, each work step pilot pin are designed in the both sides that strip is sent into Fine positioning transmits the processes such as punching and blanking between each station;
Die main body structure design:In order to ensure the precision of product, this mold using four groups of 32mm precise ball guide sleeve and lead Column is oriented to, and has the interference volume of 0.01-0.02mm between guide post and guide sleeve;Upper and lower die holder using carbon structural steels 45#, is adjusted Matter hardness is 24-28HRC, to enhance the rigidity of mold and stability;
Guiding mechanism designs:It is very high to the guiding accuracy requirement of mold since mold is used for fine-edge blanking, therefore in mold Portion is separately provided with the precise ball guide sleeve of four sets of outer diameter 20mm and guide post carries out auxiliary guiding, and guiding role is played to stripper, The blade clearance of each punch-pin, cavity plate is effectively guaranteed, so as to play certain protective effect to punch-pin;
The design of stripper:Stripper use spring-loaded stripping device, not only act as binder and discharging effect, and play punch-pin, The guiding role of pilot pin, therefore the material selection Japan cold work die steel SKD11 of stripper, heat treatment hardness 58- 62HRC.This material belongs to high-wearing feature cold work tool steel, and this steel has very high hardness, wearability and compression strength, quenches Permeability, heat treatment deformation is small.
Punch-pin and Die Design:In order to improve the production efficiency of mold and be conveniently replaceable vulnerable part, this mold is using fast Formula punch-pin is changed, fixes special-shaped punch-pin by pressing plate and screw, the fit clearance of punch-pin and punch retainer is less than 0.03mm, this Mode is conducive to punch-pin and imports naturally in stripper, when dismantling or replacing punch-pin, unclamps screw, punch-pin easily takes out, punch-pin Material uses DC53 cold work die steels, and heat treatment hardness reaches 60-62HRC, and the wearability and machinability of this material are more superior, It is suitble to the punch-pin for doing high speed blanking, in addition, being to prevent scrap rising, high pressure venthole is also provided on the punch-pin of this mold, Ensure that sweeping away the waste material come falls into cavity plate, and discharge in time, for the ease of manufacturing and repairing, the cavity plate of this mold all uses Formula structure is mutually spelled, i.e., cavity plate mold insert is fixed on die block, easy to repair and sharpening.Material also uses DC53 cold-working moulds Has steel, heat treatment hardness reaches 61-63HRC;
Punch retainer and die block design:It to regularly replace and repair in view of punch, pilot pin and die plate insert, Gu Fixed board selects high chrome alloy steel Cr12MoV, and heat treatment hardness for 56-60HRC. Cr12MoV have higher wearability, Quenching degree, hardenability, obdurability, thermal stability, compression strength and Light deformation, high comprehensive performance and extensive adaptability.
Punch retainer backing plate, stripper backing plate, the selection of die block backing material:Since mold is pressed through in high-speed punching Cheng Zhong, backing plate subject impact force and compression repeatedly, and material used will have good impact resistance, intensity and hardness, So the material selection Cr12 of backing plate, heat treatment hardness 53-55HRC, this material has very high toughness, meets Requirement;
Blade clearance and fit clearance design:Product material is 1.5mm Q235 steel plates, and punch and matrix blade clearance is two-sided 0.16mm;The fit clearance of punch-pin and fixed plate is two-sided 0.03mm;The fit clearance of punch-pin and stripper is two-sided 0.02mm; The fit clearance of cavity plate and fixed plate is two-sided 0.01mm;The fit clearance of pilot pin and stripper is two-sided 0.01mm;It is oriented to The fit clearance of mandril and die block is two-sided 0.03mm;
Other structures part designs:The design of spring-loaded stripping device, spring-loaded stripping device include stripper, unloading bolt and discharging Spring.This mold unloading bolt is symmetrical, and position arrangement is reasonable;Using the shape that casing and soket head cap screw are combined Formula, this structure can ensure that all casing length sizes are consistent, controlled by being ground, not only can guarantee stripper and upper and lower mould The depth of parallelism requirement of plate, and position-limiting action is played to stripper.Meanwhile after punch-pin sharpening, reconditioning casing size makes to unload Certain relative position is kept between flitch and punch-pin, furthermore, as long as such structure screws out plug screw, spring can be out of die holder It takes out, spring-loaded stripper can not move freely therewith, in the case where not removing stripper, can also sharpen convex Mould;
Mandril design is oriented to, this mold is equipped with 8 groups of guiding mandrils altogether, ensures that billot is sent into steady, unobstructed and ground and is continuously fed to, Material is using alloy tool steel CrWMn;
/V post design:This device protects cutting edge, loaded between upper and lower template, the minimum of mold is controlled to close for molding /V Close height.Control compresses strip limited post, and 5 groups of limited posts are installed on concave template, it is small to be higher by cavity plate face size ratio material thickness 0.05mm so can keep stripper not only to flatten strip but also avoid damaging by pressure strip;
Rush burr process step design:Progressive die is secondary or so in 50,000 mould of punching press, and the cutting edge of punch and matrix has certain abrasion, product Burr can be generated in punching face, in order to improve mold production efficiency and reduce mold sharpening and the number replaced, is increased in mold Rush burr process.Its operation principle is that shear surface oral area is pressed into 0.1X45 ° of chamfering, can burr be effectively pressed into work Part, and workpiece appearance and use are not influenced.
Embodiment 2
Present embodiments provide a kind of design method of heavy punch piece progressive die, it is characterised in that:Design of progressive die for metal is into single nine work Step, that is, rushing fabrication hole → correcting → trimming → circular hole of jet-bedding → punching three, → one step of sky → rushes burr → coining → and falls shape;Work Quick-changing type is employed as part and is decorated structure, convenient for the processing, adjustment and replacement of insert;
Because part yield is big, mould and die accuracy is high, and to prevent mold from deforming in use, the upper and lower mould seat board of mold uses 45 steel modifier treatment;Concave template uses Cr12MoV mould steel, and quenching hardness reaches 56-60HRC;Other punch fixing plates, stripper And backing plate, using CrWMn mould steel, quenching hardness reaches 56-58HRC;Punch and die plate insert are using wear-resisting and good toughness Gate-in mold system steel DC53, quenching hardness reach 60-63HRC.
By the calculating to each work step blanking pressure of heavy punch piece, blanking pressure is 23 tons, and die shape size is 400*300, The punching production of progressive die is realized with 80 tons of automatic punching machines and automatic feeding;
Mold parts layout design:
Each step design of progressive die is carried out first, is then carried out mold general assembly G- Design, is then carried out each work step part again Design and mould parts material the standard components such as selection, mold clamp, guide part and spring selection;
The processing technology of progressive die:
Processing punch-pin, die plate insert and punch-pin and female die embedding are combined using slow feeding linear cutting bed and optical contour grinder The fixed plate of block;
Flash removed structure design:The sharpening number of cutting edge is reduced, extends the service life of mold.
Correcting nail via lower end design discharge groove on die plate insert:Ensureing the effectively high correcting degree in correcting hole, Sky knife is made into the lower part in hole, and the via for all correctings being followed closely in concave template lower end penetrates through, begin to rehearse hopper, convenient for every time again The waste material generated during feeding at correcting nail excludes, so as to protect mold without damage.
Grading die stamping operating principle:
Coiled strip is lifted on rack, is flattened the strip of feeding by evener, subsequently into roller automatic feed mechanism, The step pitch of roller automatic feed mechanism is adjusted to 36.05mm before this;Start by hand to send strip to the guiding of mold In mandril, until the head of strip covers 3 correcting pin hole cutting edge of die, 3 correcting pin holes of punching for the first time, Ran Houjin are at this moment carried out Row second, third time punching shape waste material, the 4th time to rush elongated slot, the 5th punching, the 6th room rushes hair the 7th time Thorn, the 8th this coining, the 9th cut-out, punching press terminate carrier and are separated with product, and cut-off carrier is leaked out from cavity plate slug hole, Product is blown part pin and is blown into Sheng part case, and auto-feeder is adjusted to automatic state at this time and enters continuous punching.
Design of progressive die for metal uses single nine station, that is, rushes two correcting holes → 1 → trimming of trimming 2 → and rush elongated slot → punching four Circular hole → room → rushes burr → coining → cut-out;
1st station:Correcting pin hole, i.e. fabrication hole are rushed, this hole correcting billot of follow-up each station;
2nd, 3 stations:Two leftover bits and pieces of material of product is washed away respectively, and product shape shapes substantially;
4th station:Go out the elongated slot at product center;
5th station:3.25 holes of 3- and 4.5 holes on product are gone out, hole site requirement is stringent on product, therefore to be arranged in same work It is rushed out in position;
6th station:Room;
7th station:Rush burr;
8th station:Coining;It is imprinted in carrier connecting portion, plays the role of this part burr;
9th station:Cut-out obtains product.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.
In addition, there is omitted herein the description to known features and technology, to avoid idea of the invention is unnecessarily obscured.

Claims (6)

1. a kind of design method of heavy punch piece progressive die, it is characterised in that:Design of progressive die for metal rushes fabrication hole into single nine work step → correcting → trimming → circular hole of jet-bedding → punching three → → rush burr → coining → and fall shape by one step of sky;Working part employs soon The formula of changing is decorated structure, convenient for the processing, adjustment and replacement of insert;
Because part yield is big, mould and die accuracy is high, and to prevent mold from deforming in use, the upper and lower mould seat board of mold uses 45 steel modifier treatment;Concave template uses Cr12MoV mould steel, and quenching hardness reaches 56-60HRC;Other punch fixing plates, stripper And backing plate, using CrWMn mould steel, quenching hardness reaches 56-58HRC;Punch and die plate insert are using wear-resisting and good toughness Gate-in mold system steel DC53, quenching hardness reach 60-63HRC.
2. the design method of heavy punch piece progressive die described in accordance with the claim 1, it is characterised in that:By to each work of heavy punch piece Walk blanking pressure calculating, blanking pressure be 23 tons, die shape size be 400*300, automatic punching machine and self-feeding with 80 tons Device realizes the punching production of progressive die;
Mold parts layout design:
Each step design of progressive die is carried out first, is then carried out mold general assembly G- Design, is then carried out each work step part again Design and mould parts material the standard components such as selection, mold clamp, guide part and spring selection;
The processing technology of progressive die:
Processing punch-pin, die plate insert and punch-pin and female die embedding are combined using slow feeding linear cutting bed and optical contour grinder The fixed plate of block.
3. the design method of heavy punch piece progressive die described in accordance with the claim 1, it is characterised in that:
Flash removed structure design:The sharpening number of cutting edge is reduced, extends the service life of mold;
Correcting nail via lower end design discharge groove on die plate insert:Ensureing the effectively high correcting degree in correcting hole, by hole Lower part make sky knife, and the via for following closely all correctings in concave template lower end penetrates through, and begin to rehearse hopper, convenient for feeding again every time When at correcting nail generate waste material exclude, so as to protect mold without damage.
4. the design method of heavy punch piece progressive die described in accordance with the claim 1, it is characterised in that:Grading die stamping action is former Reason:
Coiled strip is lifted on rack, is flattened the strip of feeding by evener, subsequently into roller automatic feed mechanism, The step pitch of roller automatic feed mechanism is adjusted to 36.05mm before this;Start by hand to send strip to the guiding of mold In mandril, until the head of strip covers 3 correcting pin hole cutting edge of die, 3 correcting pin holes of punching for the first time, Ran Houjin are at this moment carried out Row second, third time punching shape waste material, the 4th time to rush elongated slot, the 5th punching, the 6th room rushes hair the 7th time Thorn, the 8th this coining, the 9th cut-out, punching press terminate carrier and are separated with product, and cut-off carrier is leaked out from cavity plate slug hole, Product is blown part pin and is blown into Sheng part case, and auto-feeder is adjusted to automatic state at this time and enters continuous punching.
5. the design method of heavy punch piece progressive die described in accordance with the claim 1, it is characterised in that:Design of progressive die for metal is using single Nine stations, that is, rush two correcting holes → 1 → trimming of trimming 2 → rush four circular holes of elongated slot → punching → room → rush burr → coining → Cut-out;
1st station:Correcting pin hole, i.e. fabrication hole are rushed, this hole correcting billot of follow-up each station;
2nd, 3 stations:Two leftover bits and pieces of material of product is washed away respectively, and product shape shapes substantially;
4th station:Go out the elongated slot at product center;
5th station:3.25 holes of 3- and 4.5 holes on product are gone out, hole site requirement is stringent on product, therefore to be arranged in same work It is rushed out in position;
6th station:Room;
7th station:Rush burr;
8th station:Coining;It is imprinted in carrier connecting portion, plays the role of this part burr;
9th station:Cut-out obtains product.
6. the design method of heavy punch piece progressive die described in accordance with the claim 1, it is characterised in that:
The design of heavy punch piece progressive die structure illustrates:
Feeding Mechanism Design:Feed mechanism uses roller self-feeding, in order to reduce strip in feeding to molding surface Friction, and burr mechanism is rushed higher than cavity plate face, feeding must be suspended in the progress of cavity plate plane certain altitude, and mold uses Strip is lifted transmission by floating guiding stock pin guide, and two fabrication holes, each work step pilot pin are designed in the both sides that strip is sent into Fine positioning transmits the processes such as punching and blanking between each station;
Die main body structure design:In order to ensure the precision of product, this mold using four groups of 32mm precise ball guide sleeve and lead Column is oriented to, and has the interference volume of 0.01-0.02mm between guide post and guide sleeve;Upper and lower die holder using carbon structural steels 45#, is adjusted Matter hardness is 24-28HRC, to enhance the rigidity of mold and stability;
Guiding mechanism designs:It is very high to the guiding accuracy requirement of mold since mold is used for fine-edge blanking, therefore in mold Portion is separately provided with the precise ball guide sleeve of four sets of outer diameter 20mm and guide post carries out auxiliary guiding, and guiding role is played to stripper, The blade clearance of each punch-pin, cavity plate is effectively guaranteed, so as to play certain protective effect to punch-pin;
The design of stripper:Stripper use spring-loaded stripping device, not only act as binder and discharging effect, and play punch-pin, The guiding role of pilot pin;
Punch-pin and Die Design:In order to improve the production efficiency of mold and be conveniently replaceable vulnerable part, this mold uses quick-changing type Punch-pin fixes special-shaped punch-pin by pressing plate and screw, and the fit clearance of punch-pin and punch retainer is less than 0.03mm, this mode Be conducive to punch-pin to import in stripper naturally, when dismantling or replacing punch-pin, unclamp screw, punch-pin easily takes out, punch-pin material Using DC53 cold work die steels, heat treatment hardness reaches 60-62HRC, and the wearability and machinability of this material are more superior, is suitble to The punch-pin of high speed blanking is made, in addition, to prevent scrap rising, high pressure venthole is also provided on the punch-pin of this mold, is ensured It sweeps away the waste material come and falls into cavity plate, and discharge in time, for the ease of manufacturing and repairing, the cavity plate of this mold is all using mutually spelling Formula structure is fixed on cavity plate mold insert on die block, easy to repair and sharpening, material also uses DC53 cold-working molds Steel, heat treatment hardness reach 61-63HRC;
Punch retainer and die block design:It to regularly replace and repair in view of punch, pilot pin and die plate insert, Gu Fixed board selects high chrome alloy steel Cr12MoV, and heat treatment hardness for 56-60HRC. Cr12MoV have higher wearability, Quenching degree, hardenability, obdurability, thermal stability, compression strength and Light deformation, high comprehensive performance and extensive adaptability;
Punch retainer backing plate, stripper backing plate, the selection of die block backing material:Since mold is in high speed stamping process In, backing plate subjects impact force and compression repeatedly, and material used will have good impact resistance, intensity and hardness, institute With the material selection Cr12 of backing plate, heat treatment hardness 53-55HRC, this material has very high toughness, and meeting makes With requiring;
Blade clearance and fit clearance design:Product material is 1.5mm Q235 steel plates, and punch and matrix blade clearance is two-sided 0.16mm;The fit clearance of punch-pin and fixed plate is two-sided 0.03mm;The fit clearance of punch-pin and stripper is two-sided 0.02mm; The fit clearance of cavity plate and fixed plate is two-sided 0.01mm;The fit clearance of pilot pin and stripper is two-sided 0.01mm;It is oriented to The fit clearance of mandril and die block is two-sided 0.03mm;
Other structures part designs:The design of spring-loaded stripping device, spring-loaded stripping device include stripper, unloading bolt and discharging Spring;This mold unloading bolt is symmetrical, and position arrangement is reasonable;Using the shape that casing and soket head cap screw are combined Formula, this structure can ensure that all casing length sizes are consistent, controlled by being ground, not only can guarantee stripper and upper and lower mould The depth of parallelism requirement of plate, and position-limiting action is played to stripper;Meanwhile after punch-pin sharpening, reconditioning casing size makes to unload Certain relative position is kept between flitch and punch-pin, furthermore, as long as such structure screws out plug screw, spring can be out of die holder It takes out, spring-loaded stripper can not move freely therewith, in the case where not removing stripper, can also sharpen convex Mould;
Mandril design is oriented to, this mold is equipped with 8 groups of guiding mandrils altogether, ensures that billot is sent into steady, unobstructed and ground and is continuously fed to, Material is using alloy tool steel CrWMn;
/V post design:This device protects cutting edge, loaded between upper and lower template, the minimum of mold is controlled to close for molding /V Close height;Control compresses strip limited post, and 5 groups of limited posts are installed on concave template, it is small to be higher by cavity plate face size ratio material thickness 0.05mm so can keep stripper not only to flatten strip but also avoid damaging by pressure strip;
Rush burr process step design:Progressive die is secondary or so in 50,000 mould of punching press, and the cutting edge of punch and matrix has certain abrasion, product Burr can be generated in punching face, in order to improve mold production efficiency and reduce mold sharpening and the number replaced, is increased in mold Rush burr process;Its operation principle is that shear surface oral area is pressed into 0.1X45 ° of chamfering, can burr be effectively pressed into work Part, and workpiece appearance and use are not influenced.
CN201711470743.5A 2017-12-29 2017-12-29 A kind of design method of heavy punch piece progressive die Pending CN108043952A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109719202A (en) * 2019-02-23 2019-05-07 宁波昌扬机械工业有限公司 Skylight guide rail sequential punching mold
CN110434228A (en) * 2019-08-16 2019-11-12 安徽晶赛科技股份有限公司 One kind 3225 can cut down ring manufacture mold
CN110586724A (en) * 2019-08-17 2019-12-20 徐州远航模具有限公司 Stamping equipment suitable for production hammer
CN112588959A (en) * 2020-11-24 2021-04-02 青岛科技大学 Progressive die design of clamp part

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109719202A (en) * 2019-02-23 2019-05-07 宁波昌扬机械工业有限公司 Skylight guide rail sequential punching mold
CN110434228A (en) * 2019-08-16 2019-11-12 安徽晶赛科技股份有限公司 One kind 3225 can cut down ring manufacture mold
CN110586724A (en) * 2019-08-17 2019-12-20 徐州远航模具有限公司 Stamping equipment suitable for production hammer
CN112588959A (en) * 2020-11-24 2021-04-02 青岛科技大学 Progressive die design of clamp part

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Application publication date: 20180518