CN110355312A - Interior hexagonal cold-forging forming mold and technique in a kind of cup shell - Google Patents

Interior hexagonal cold-forging forming mold and technique in a kind of cup shell Download PDF

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Publication number
CN110355312A
CN110355312A CN201910629965.XA CN201910629965A CN110355312A CN 110355312 A CN110355312 A CN 110355312A CN 201910629965 A CN201910629965 A CN 201910629965A CN 110355312 A CN110355312 A CN 110355312A
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CN
China
Prior art keywords
punch
blank
cavity
hexagon
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910629965.XA
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Chinese (zh)
Inventor
张花根
季微微
宗和敬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU CHUANGYI PRECISION FORGING CO Ltd
Original Assignee
JIANGSU CHUANGYI PRECISION FORGING CO Ltd
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
Publication date
Application filed by JIANGSU CHUANGYI PRECISION FORGING CO Ltd filed Critical JIANGSU CHUANGYI PRECISION FORGING CO Ltd
Priority to CN201910629965.XA priority Critical patent/CN110355312A/en
Publication of CN110355312A publication Critical patent/CN110355312A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools
    • B21J13/14Ejecting devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • B21J5/025Closed die forging

Abstract

The present invention provides a kind of molds of hexagonal interior in cup shell forming, including upper die component and lower mold assemblies, top mold holder component includes that top mold holder and the upper punch being installed in top mold holder and annular punch, upper punch are threaded through in annular punch, and the end sections of upper punch, which protrude from, changes shape formed punch;Lower mold holder component includes lower mold holder, the cavity plate and inter-hexagon punch that are installed on lower mold holder, cavity plate is located at the top of inter-hexagon punch, cavity plate is equipped with the die cavity matched with upper punch, upper punch and cavity plate mutual cooperation extrusion billet form the side wall and cavity of workpiece, and upper punch and inter-hexagon punch match the interior hexagonal that extrusion billet forms workpiece.The present invention also provides a kind of techniques using above-mentioned mold.The present invention shape in hexagonal when need to reach the region of certain degree of hardness and be enclosed in that type is intracavitary, using the extruding force of formed punch to the region imposed deformation, make up to the hardness of needs.

Description

Interior hexagonal cold-forging forming mold and technique in a kind of cup shell
Technical field
The invention belongs to cold-forging technique and mold, be more particularly in a kind of cup shell interior hexagonal cold-forging forming technique and its Mold.
Background technique
Shape cannot be sufficient, with the indeformable association area of interior hexagonal in forming process for hexagonal forging in existing cup shell Hardness is beaten less than requiring, and workpiece cannot be heat-treated adjustment hardness.
Summary of the invention
Interior hexagonal configuration abundance, associated region hardness on forging can be made to reach requirement the object of the present invention is to provide a kind of Interior hexagonal cold-forging forming technique and its mold in cup shell.
According to an aspect of the invention, there is provided the mold that interior hexagonal shapes in a kind of cup shell, including upper die component And lower mold assemblies,
The top mold holder component includes top mold holder and the upper punch that is installed in the top mold holder and annular punch, it is described on Formed punch is threaded through in the annular punch, and the end sections of the upper punch, which protrude from, described changes shape formed punch;
The lower mold holder component includes lower mold holder, the cavity plate and inter-hexagon punch that are installed on the lower mold holder, described recessed Mould is located at the top of the inter-hexagon punch, and the cavity plate is equipped with the die cavity matched with the upper punch, the upper punch and The cavity plate mutual cooperation extrusion billet forms the side wall and cavity of workpiece, and the upper punch and the inter-hexagon punch match The interior hexagonal of extrusion billet formation workpiece.
In some embodiments, the upper die component further include:
Upper Die-sleeve, the vertical direction that its side wall is prolonged in end are outward extended with fixed ring, and the fixed ring is solid by screw It is scheduled in the top mold holder;
Formed punch set is set in outside the annular punch with the fixation annular punch, and the formed punch set is pre- by simultaneously cap Tightly on the Upper Die-sleeve.
In some embodiments, the lower mold assemblies further include:
Lower die-sleeve is bolted to connection on the lower mold holder;
Guide sleeve is set on the cavity plate with the fixation cavity plate, and the guide sleeve and the cavity plate pass through seam allowance Connection, the guide sleeve are arranged with pressing plate outside, and the pressing plate is connect by bolt with the lower die-sleeve;
Inter-hexagon punch fixing seat is mounted on the lower mold holder, is set on the inter-hexagon punch to fix State inter-hexagon punch.
In some embodiments, the lower mold assemblies further include bottom knockout bar, stripping attachment fixing seat, fill block, the upper material returned Device and lower stripping attachment,
The upper stripping attachment is mounted in the inter-hexagon punch fixing seat, and the upper stripping attachment is located at the interior hexagonal stamping Between head fixing seat and the bottom of the blank, the end of the upper stripping attachment and the bottom of workpiece offset;
The through-hole that the bottom knockout bar passes through the lower mold holder is connect with the fill block, the fill block and the lower stripping attachment Connection, the stripping attachment fixing seat are mounted in lower die-sleeve, in the lower stripping attachment installation stripping attachment fixing seat, the lower material returned The end of device and the bottom of workpiece offset.
According to another aspect of the present invention, interior hexagonal cold-forging forming technique in a kind of cup shell is provided, use is above-mentioned Interior hexagonal cold-forging forming mold is by blank cold-forging forming in cup shell, as the upper die component is gradually moved to the lower mold assemblies It is dynamic:
The upper punch and the cavity plate cooperate, and extrusion billet forms the cavity and side wall of workpiece;
Under the action of the formed punch and the inter-hexagon punch, by the bottom on blank squeeze into the upper punch hexagonal at Shape is intracavitary, and as forming carries out, hexagonal forming cavity is full of blank in the upper punch, forms the hexagon socket head cap screw of workpiece;
When workpiece and upper stripping attachment touch, the upper punch, the cavity plate and the inter-hexagon punch form first Hemi-closure space, the annular punch, cavity plate and upper punch form the second hemi-closure space, are equipped between two hemi-closure spaces Blank accommodation space, under the action of two hemi-closure spaces, extruding force can allow hexagonal forming cavity in the upper punch to squeeze foot, more Remaining material is squeezed along the semiclosed mouth of two hemi-closure spaces to blank accommodation space, until squeezing terminates.
In some embodiments, further include shaping preceding pretreatment before forming technology, before the forming pretreatment include:
High annealing removes blank internal stress, controls the Oxygen potential of blank, improve deformed hardness;
The shape of needs is made in blank by base, controls the weight and surface roughness of blank;
Ball blast, to blank surface Shot Blasting in order to the attachment of phosphorus, saponification layer;
Pre-treatment, blank surface covers phosphorus, saponification layer is convenient for cold-forging forming.
In some embodiments, the bottom of the blank before hexagon socket head cap screw forming is equipped with to its cavity The boss of inner recess flows the loss to be formed to non-close region when making up the forming of interior hexagonal.
In some embodiments, the small boss of blank upper bottom portion is squeezed into the upper punch in hexagonal forming cavity, with Forming carry out, hexagonal forming cavity is full of blank in the upper punch, forms the hexagon socket head cap screw of workpiece.
It has the advantage that: the present invention shape in hexagonal when need to reach region intracavitary, the benefit that is enclosed in type of certain degree of hardness With the extruding force of formed punch to the region imposed deformation, the hardness of needs is made up to;
The present invention by interior hexagonal shape before blank special shape is made, the shape can make up interior hexagonal forming when to Flow the loss to be formed in non-close region;
Interior hexagonal of the oral area of workpiece made of the present invention with chamfering is to forge, full appearance;Cup shell ground warp Extruding, inside and outside smooth is crossed, R is angular to meet the requirements;At the angle R, interior hexagonal, baseplane pass through forging extruding, hardness meets the requirements.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of interior hexagonal cold-forging forming mold in a kind of cup shell of an embodiment of the present invention;
Fig. 2 is that the first hemi-closure space, the second hemi-closure space and the blank of the mold and blank formation in Fig. 1 accommodate sky Between structural schematic diagram;
Fig. 3 is the knot of workpiece obtained by interior hexagonal cold-forging forming technique in a kind of cup shell of an embodiment of the present invention Structure schematic diagram;
Fig. 4 is the knot of blank used in interior hexagonal cold-forging forming technique in a kind of cup shell of an embodiment of the present invention Structure schematic diagram.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Fig. 1 and Fig. 2 schematically shows interior hexagonal cold-forging forming mold in the cup shell of one embodiment of the present invention. As depicted in figs. 1 and 2, interior hexagonal cold-forging forming mold in the cup shell, including upper die component and lower mold assemblies.
Top mold holder component includes top mold holder and the upper punch being installed in top mold holder 6 and annular punch 5.Annular punch set 4 set outside upper punch 6, and the end of upper punch 6 protrudes from annular punch 5, form workpiece with extrusion billet.Top mold holder component further includes Upper Die-sleeve 2,2 pressure block 1 of Upper Die-sleeve, formed punch cover 4 and simultaneously cap 3.The vertical direction that its side wall is prolonged in the end of Upper Die-sleeve 2 extends outwardly There is fixed ring, fixed ring is fixed by screws in top mold holder.The fixation of 2 pressure block 1 of Upper Die-sleeve is threaded through in Upper Die-sleeve 2, thereon Surface and the bottom of top mold holder fit.Annular punch 5 is mounted in formed punch set 4.The top of formed punch set 4 and 2 pressure of Upper Die-sleeve The bottom of block 1 offsets.And cap 3, it is ring body shape, the vertical direction that its side wall is prolonged in bottom extends internally and has snap ring;Formed punch set 4 is logical It crosses and cap 3 pre-tightens on Upper Die-sleeve 2.
Lower mold holder component includes that lower mold holder, the cavity plate being installed on lower mold holder 7 and 10 cavity plate 7 of inter-hexagon punch are located at interior six The top of angle formed punch 10.Cavity plate 7 is equipped with the die cavity matched with upper punch 6,7 mutual cooperation extrusion billet of upper punch 6 and cavity plate The side wall and cavity of workpiece are formed, upper punch 6 and inter-hexagon punch 10 match the interior hexagonal that extrusion billet forms workpiece.Lower die Component further includes guide sleeve, pressing plate 8, inter-hexagon punch fixing seat 11, lower die-sleeve 12,12 pressure block of lower die-sleeve, locating ring 16, fills out Block 17, upper stripping attachment 9, lower stripping attachment 14, stripping attachment fixing seat 13 and bottom knockout bar 18.Guide sleeve is set in outside cavity plate 7, guiding Set and cavity plate 7 are through the joint of the seam allowance.The lateral wall of guide sleeve is equipped with step, and pressing plate 8 is ring body shape, is arranged with pressing plate at step 8.Pressing plate 8 is connect by hexagon socket head cap screw with lower die-sleeve 12.The both ends of lower die-sleeve 12 be equipped with prolong the vertical direction of its side wall to The connection ring of the connection ring of outer extension, 12 one end of lower die-sleeve is connect by bolt with pressing plate 8, the connection of the other end of lower die-sleeve 12 Ring is connect by bolt with lower mold holder.Inter-hexagon punch 10 is mounted in inter-hexagon punch fixing seat 11, with fixed interior hexagonal stamping First 10.The end of inter-hexagon punch 10 protrudes from inter-hexagon punch fixing seat 11, to match to form interior hexagonal with upper punch 6. Inter-hexagon punch fixing seat 11 is mounted in lower die-sleeve 12.Lower mold holder is equipped with through-hole.Bottom knockout bar 18 passes through the through-hole of lower mold holder It is connect with fill block 17.Fill block 17 is mounted in 12 pressure block of lower die-sleeve.It is fixed to be equipped between 12 pressure block of lower die-sleeve and lower die-sleeve 12 Position circle 16.Fill block 17 is connect with lower stripping attachment 14.Upper stripping attachment 9 is mounted in inter-hexagon punch fixing seat 11.Upper stripping attachment 9 Between inter-hexagon punch fixing seat 11 and the bottom of blank, for resisting the bottom of workpiece.Lower stripping attachment 14 is mounted on the material returned In device fixing seat 13.The end of lower stripping attachment 14 and the bottom of workpiece offset, for ejecting the workpiece of forming.Stripping attachment fixing seat 13 upper surface and the lower end surface of inter-hexagon punch fixing seat 11 fit.It is equipped with down between stripping attachment fixing seat 13 and lower mold holder 12 pressure block of die sleeve.One end of 12 pressure block of lower die-sleeve offsets with stripping attachment fixing seat 13, the other end of 12 pressure block of lower die-sleeve It offsets with lower mold holder.
Interior hexagonal cold-forging forming technique in a kind of cup shell, using hexagonal cold-forging forming mold interior in above-mentioned cup shell by base Expect cold-forging forming, as membrane module is mobile gradually downward for upper die component: upper punch 6 and cavity plate 7 cooperate, and extrusion billet is formed The cavity and side wall of workpiece;Under the action of formed punch and inter-hexagon punch 10, by the bottom on blank squeeze into upper punch 6 hexagonal at Shape is intracavitary, and as forming carries out, hexagonal forming cavity is full of blank in upper punch 6, forms the interior hexagonal of workpiece;When workpiece and above move back When glassware 9 touches, upper punch 6, cavity plate 7 and inter-hexagon punch 10 form the first hemi-closure space 201, annular punch 5, cavity plate 7 and upper punch 6 form the second hemi-closure space 202, blank accommodation space 203 is equipped between two hemi-closure spaces, blank The small―gap suture being equipped between side wall and the inner wall of cavity plate 7 is blank accommodation space 203.Under the action of two hemi-closure spaces, Extruding force can allow in upper punch 6 hexagonal forming cavity to squeeze foot, and extra material is along the semiclosed mouth of two hemi-closure spaces to blank Accommodation space squeezes, until squeezing terminates, it is as shown in Figure 3 to squeeze resulting workpiece.As shown in figure 4, six in workpiece bottom The bottom of blank before the forming of angle is equipped with the boss 19 being recessed to its inside cavity, to non-close when making up the forming of interior hexagonal Flow the loss to be formed in region.The small boss 19 of blank upper bottom portion is squeezed into upper punch 6 in hexagonal forming cavity, with shape into It goes, hexagonal forming cavity is full of blank in upper punch 6, forms the interior hexagonal of workpiece.The side wall of the workpiece of forming and the connection of bottom Place is rounded corner R, after forging the angle R, at interior hexagonal, the hardness of baseplane meet the requirements, hardness >=80HRB.
It further include shaping preceding pretreatment before forming technology, pretreatment includes: high annealing before shaping, and removes and answers in blank Power controls the Oxygen potential of blank, improves deformed hardness;The shape of needs is made in blank by base, controls the weight of blank And surface roughness;Ball blast, to blank surface Shot Blasting in order to the attachment of phosphorus, saponification layer;Pre-treatment, blank surface covering Phosphorus, saponification layer are convenient for cold-forging forming.
Above-described is only some embodiments of the present invention, for those of ordinary skill in the art, is not being taken off Under the premise of from the invention design, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.

Claims (8)

1. interior hexagonal cold-forging forming mold in a kind of cup shell, which is characterized in that including upper die component and lower mold assemblies,
The top mold holder component includes top mold holder and the upper punch being installed in the top mold holder and annular punch, the upper punch It is threaded through in the annular punch, the end sections of the upper punch, which protrude from, described changes shape formed punch;
The lower mold holder component includes lower mold holder, the cavity plate and inter-hexagon punch that are installed on the lower mold holder, the cavity plate position In the top of the inter-hexagon punch, the cavity plate is equipped with the die cavity that matches with the upper punch, the upper punch and described Cavity plate mutual cooperation extrusion billet forms the side wall and cavity of workpiece, and the upper punch and the inter-hexagon punch match extruding The interior hexagonal of blank formation workpiece.
2. interior hexagonal cold-forging forming mold in cup shell according to claim 1, which is characterized in that the upper die component is also Include:
Upper Die-sleeve, the vertical direction that its side wall is prolonged in end are outward extended with fixed ring, and the fixed ring is fixed by screws in In the top mold holder;
Formed punch set is set in outside the annular punch with the fixation annular punch, and the formed punch set is pre-tightened by simultaneously cap to exist On the Upper Die-sleeve.
3. interior hexagonal cold-forging forming mold in cup shell according to claim 1, which is characterized in that the lower mold assemblies are also Include:
Lower die-sleeve is bolted to connection on the lower mold holder;
Guide sleeve is set on the cavity plate with the fixation cavity plate, the guide sleeve and the cavity plate through the joint of the seam allowance, Pressing plate is arranged with outside the guide sleeve, the pressing plate is connect by bolt with the lower die-sleeve;
Inter-hexagon punch fixing seat is mounted on the lower mold holder, is set on the inter-hexagon punch described interior with fixation Hexagonal punch pin.
4. interior hexagonal cold-forging forming mold in cup shell according to claim 1, which is characterized in that the lower mold assemblies are also Including bottom knockout bar, stripping attachment fixing seat, fill block, upper stripping attachment and lower stripping attachment,
The upper stripping attachment is mounted in the inter-hexagon punch fixing seat, and it is solid that the upper stripping attachment is located at the inter-hexagon punch Between reservation and the bottom of the blank, the end of the upper stripping attachment and the bottom of workpiece offset;
The through-hole that the bottom knockout bar passes through the lower mold holder is connect with the fill block, and the fill block and the lower stripping attachment connect It connecing, the stripping attachment fixing seat is mounted in lower die-sleeve, in the lower stripping attachment installation stripping attachment fixing seat, the lower stripping attachment End and the bottom of workpiece offset.
5. interior hexagonal cold-forging forming technique in a kind of cup shell, which is characterized in that use cup described in any one of claims 1-6 Physically interior hexagonal cold-forging forming mold is by blank cold-forging forming, as the upper die component is gradually moved to the lower mold assemblies It is dynamic:
The upper punch and the cavity plate cooperate, and extrusion billet forms the cavity and side wall of workpiece;
Under the action of the formed punch and the inter-hexagon punch, hexagonal forming cavity in the upper punch is squeezed into the bottom on blank Interior, as forming carries out, hexagonal forming cavity is full of blank in the upper punch, forms the hexagon socket head cap screw of workpiece;
When workpiece and upper stripping attachment touch, the upper punch, the cavity plate and the inter-hexagon punch form the first half envelopes Space is closed, the annular punch, cavity plate and upper punch form the second hemi-closure space, be equipped with blank between two hemi-closure spaces Accommodation space, under the action of two hemi-closure spaces, extruding force can allow hexagonal forming cavity in the upper punch to squeeze foot, extra Material is squeezed along the semiclosed mouth of two hemi-closure spaces to blank accommodation space, until squeezing terminates.
6. interior hexagonal cold-forging forming technique in cup shell according to claim 5, which is characterized in that before forming technology also Including pre-processing before shaping, pretreatment includes: before the forming
High annealing removes blank internal stress, controls the Oxygen potential of blank, improve deformed hardness;
The shape of needs is made in blank by base, controls the weight and surface roughness of blank;
Ball blast, to blank surface Shot Blasting in order to the attachment of phosphorus, saponification layer;
Pre-treatment, blank surface covers phosphorus, saponification layer is convenient for cold-forging forming.
7. interior hexagonal cold-forging forming technique in cup shell according to claim 6, which is characterized in that in the interior hexagonal spiral shell The bottom of the blank before bolt forming is equipped with the boss being recessed to its inside cavity, to make up interior hexagonal forming Shi Xiangfei envelope Closed region flows the loss to be formed.
8. interior hexagonal cold-forging forming technique in cup shell according to claim 7, which is characterized in that by blank upper bottom portion Small boss is squeezed into the upper punch in hexagonal forming cavity, and as forming carries out, hexagonal forming cavity is full of base in the upper punch Material, forms the hexagon socket head cap screw of workpiece.
CN201910629965.XA 2019-07-12 2019-07-12 Interior hexagonal cold-forging forming mold and technique in a kind of cup shell Pending CN110355312A (en)

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Application Number Priority Date Filing Date Title
CN201910629965.XA CN110355312A (en) 2019-07-12 2019-07-12 Interior hexagonal cold-forging forming mold and technique in a kind of cup shell

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299489A (en) * 2020-03-13 2020-06-19 张巧 Semi-closed forging die for forge pieces
CN116475258A (en) * 2023-06-15 2023-07-25 陕西长羽航空装备股份有限公司 Large titanium alloy deep cylinder back extrusion forging equipment and method for aviation aircraft

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CN108145054A (en) * 2017-11-20 2018-06-12 江苏森威集团飞达股份有限公司 A kind of external screw thread double bond slot forging piece molding die and moulding process
CN211071631U (en) * 2019-07-12 2020-07-24 江苏创一精锻有限公司 Cold forging forming die for upper inner hexagon of cup-shaped body

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Publication number Priority date Publication date Assignee Title
CN1864915A (en) * 2006-06-13 2006-11-22 中北大学 A labor-saving automobile hub forming method and device
KR20150117763A (en) * 2014-04-10 2015-10-21 주식회사 세림티앤디 Push Rod Producing Method for Vehcle
CN104588426A (en) * 2015-01-14 2015-05-06 江苏创一精锻有限公司 Energy accumulator tank forging forming process and extrusion die
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299489A (en) * 2020-03-13 2020-06-19 张巧 Semi-closed forging die for forge pieces
CN116475258A (en) * 2023-06-15 2023-07-25 陕西长羽航空装备股份有限公司 Large titanium alloy deep cylinder back extrusion forging equipment and method for aviation aircraft
CN116475258B (en) * 2023-06-15 2023-09-01 陕西长羽航空装备股份有限公司 Large titanium alloy deep cylinder back extrusion forging equipment and method for aviation aircraft

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