CN103962489A - Cutting tooth forge piece forming die upper die structure - Google Patents

Cutting tooth forge piece forming die upper die structure Download PDF

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Publication number
CN103962489A
CN103962489A CN201410110925.1A CN201410110925A CN103962489A CN 103962489 A CN103962489 A CN 103962489A CN 201410110925 A CN201410110925 A CN 201410110925A CN 103962489 A CN103962489 A CN 103962489A
Authority
CN
China
Prior art keywords
upper die
circle
die structure
cutting tooth
forge piece
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
CN201410110925.1A
Other languages
Chinese (zh)
Inventor
陈泽
朱胜
殷宏
沈建华
李德山
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.)
DAFENG CITY ZHONGDE PRECISION FORGING Co Ltd
Original Assignee
DAFENG CITY ZHONGDE 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 DAFENG CITY ZHONGDE PRECISION FORGING Co Ltd filed Critical DAFENG CITY ZHONGDE PRECISION FORGING Co Ltd
Priority to CN201410110925.1A priority Critical patent/CN103962489A/en
Publication of CN103962489A publication Critical patent/CN103962489A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a cutting tooth forge piece forming die upper die structure which is long in service life. The cutting tooth forge piece forming die upper die structure comprises an outer circle, a middle circle and an inner circle, wherein the middle circle is arranged in the outer circle and matched with the outer circle, and the inner circle is arranged in the middle circle and matched with the middle circle. The middle of the inner circle is provided with a punch pin hole and a cutting tooth forge piece workpiece containing hole. The cutting tooth forge piece forming die upper die structure has the advantages that an existing two-layer combined upper die structure is improved into a three-layer combined upper die structure, a forming upper die is improved to be of a shunt forging forming structure, pre-stress of the upper die is further increased due to the improved upper die structure, the risk of radial cracking of the forming upper die is reduced, and the service life of the die is greatly prolonged.

Description

Pick forging piece molding die upper die structure
Technical field
The present invention relates to a kind of metal precision forging die, relate in particular to a kind of pick forging piece molding die upper die structure.
Background technology
Pick forging is the vitals being applied on coal mine development machine drum, umbrella shape forging, wherein the moulding of umbrella shape part is more difficult, in umbrella shape portion forming process, radially extruding force is larger, the production environment of shaping upper is more severe, the failure mode of shaping upper is cracking radially, and traditional pick forging shaping upper structure comprises: outer ring and be arranged on mutual with it inner ring is provided with bore of the punch and pick forging workpiece putting hole the outer ring in the middle part of inner ring.Traditional pick forging shaping upper structure adopts two-layer combination upper die structure, the prestressing force that increases shaping upper improves die life, the inner ring of tradition pick forging shaping upper structure can cold forging die material, outer ring adopts 40Cr material, provide prestressing force by combined die structure for inner ring, in the time carrying out cold extrusion, the suffered radial compression power of mould just in time can be offset a part with prestressing force, thereby reduce the suffered radial compression power of mould, improved the working environment of mould.
Summary of the invention
Technical problem to be solved by this invention is: the pick forging piece molding die upper die structure that a kind of high life is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: pick forging piece molding die upper die structure, comprise: outer ring and be arranged on mutual with it centre circle the outer ring in and be arranged on the interior inner ring cooperatively interacting with it of centre circle, is provided with bore of the punch and pick forging workpiece putting hole at the middle part of described inner ring.
Advantage of the present invention is: above-mentioned pick forging piece molding die upper die structure, original two-layer combination upper die structure is improved to three layers of combination upper die structure, and shaping upper is improved to shunting forging molding structure, upper die structure after improvement has further increased the prestressing force of patrix, reduce the risk that shaping upper radially ftractures, improved die life greatly.
Brief description of the drawings
Fig. 1 is the sectional structure schematic diagram of pick forging piece molding die upper die structure of the present invention.
In figure: 1, outer ring, 2, centre circle, 3, inner ring, 4, bore of the punch, 5, pick forging workpiece putting hole.
Detailed description of the invention
Describe in detail particular content of the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, pick forging piece molding die upper die structure, comprise: outer ring 1 and be arranged on centre circle 2 mutual with it in outer ring 1 and be arranged on the interior inner ring 3 cooperatively interacting with it of centre circle 2, is provided with bore of the punch 4 and pick forging workpiece putting hole 5 at the middle part of described inner ring 3.
Above-mentioned pick forging piece molding die upper die structure, original two-layer combination upper die structure is improved to three layers of combination upper die structure, and shaping upper is improved to shunting forging molding structure, upper die structure after improvement has further increased the prestressing force of patrix, reduce the risk that shaping upper radially ftractures, improved die life greatly.The material of the centre circle 2 of choose reasonable combination patrix; The magnitude of interference of appropriate design combination patrix; Centre circle is selected H13 mold materials; According to thin-walled drum theory, compared with two-layer combination patrix, the magnitude of interference of three layers of combination patrix carries out suitable reducing, outer ring 1, centre circle 2 and inner ring 3 materials by soft to hard, the magnitude of interference of centre circle is designed to 0.4%, increase the prestressing force of shaping upper, met again the requirement that is press-fitted of combination patrix.

Claims (1)

1. pick forging piece molding die upper die structure, it is characterized in that: comprising: outer ring (1) and be arranged on centre circle (2) mutual with it in outer ring (1) and be arranged on the interior inner ring (3) cooperatively interacting with it of centre circle (2), is provided with bore of the punch (4) and pick forging workpiece putting hole (5) at the middle part of described inner ring (3).
CN201410110925.1A 2014-03-24 2014-03-24 Cutting tooth forge piece forming die upper die structure Pending CN103962489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410110925.1A CN103962489A (en) 2014-03-24 2014-03-24 Cutting tooth forge piece forming die upper die structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410110925.1A CN103962489A (en) 2014-03-24 2014-03-24 Cutting tooth forge piece forming die upper die structure

Publications (1)

Publication Number Publication Date
CN103962489A true CN103962489A (en) 2014-08-06

Family

ID=51232763

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410110925.1A Pending CN103962489A (en) 2014-03-24 2014-03-24 Cutting tooth forge piece forming die upper die structure

Country Status (1)

Country Link
CN (1) CN103962489A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234330A (en) * 2015-09-02 2016-01-13 浙江铭锐金属制品有限公司 Extruder of exhaust pipe pressure device used for automobiles
CN110608611A (en) * 2019-10-31 2019-12-24 中南大学 Preparation method of boron carbide bearing with gradient grains

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10128486A (en) * 1996-10-28 1998-05-19 Aisan Ind Co Ltd Hot extruding and forging die for titanium
JP2003071536A (en) * 2001-08-31 2003-03-11 Musashi Seimitsu Ind Co Ltd Pulling-out method and apparatus of forgings
CN101284299A (en) * 2008-05-21 2008-10-15 华中科技大学 Gear-box planetary gear shaping die
CN101920442A (en) * 2010-06-20 2010-12-22 大丰市中德精锻件有限公司 Process for coldly extruding, reducing and pressing bit body and hard alloy head
CN201832943U (en) * 2010-09-10 2011-05-18 江苏威鹰机械有限公司 Forward extrusion female die for forging of pick sleeve
CN201841233U (en) * 2010-09-10 2011-05-25 江苏威鹰机械有限公司 Cone upsetting die for forging cutting pick boot
CN202752519U (en) * 2012-06-11 2013-02-27 盐城理研精密锻造有限公司 Cold forging die for cutting tooth forged piece

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10128486A (en) * 1996-10-28 1998-05-19 Aisan Ind Co Ltd Hot extruding and forging die for titanium
JP2003071536A (en) * 2001-08-31 2003-03-11 Musashi Seimitsu Ind Co Ltd Pulling-out method and apparatus of forgings
CN101284299A (en) * 2008-05-21 2008-10-15 华中科技大学 Gear-box planetary gear shaping die
CN101920442A (en) * 2010-06-20 2010-12-22 大丰市中德精锻件有限公司 Process for coldly extruding, reducing and pressing bit body and hard alloy head
CN201832943U (en) * 2010-09-10 2011-05-18 江苏威鹰机械有限公司 Forward extrusion female die for forging of pick sleeve
CN201841233U (en) * 2010-09-10 2011-05-25 江苏威鹰机械有限公司 Cone upsetting die for forging cutting pick boot
CN202752519U (en) * 2012-06-11 2013-02-27 盐城理研精密锻造有限公司 Cold forging die for cutting tooth forged piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234330A (en) * 2015-09-02 2016-01-13 浙江铭锐金属制品有限公司 Extruder of exhaust pipe pressure device used for automobiles
CN110608611A (en) * 2019-10-31 2019-12-24 中南大学 Preparation method of boron carbide bearing with gradient grains
CN110608611B (en) * 2019-10-31 2021-04-06 中南大学 Preparation method of boron carbide bearing with gradient grains

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Application publication date: 20140806