EP0414973A1 - Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube - Google Patents

Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube Download PDF

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Publication number
EP0414973A1
EP0414973A1 EP89308898A EP89308898A EP0414973A1 EP 0414973 A1 EP0414973 A1 EP 0414973A1 EP 89308898 A EP89308898 A EP 89308898A EP 89308898 A EP89308898 A EP 89308898A EP 0414973 A1 EP0414973 A1 EP 0414973A1
Authority
EP
European Patent Office
Prior art keywords
die
knife
edge
tapping screw
clamping plate
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.)
Withdrawn
Application number
EP89308898A
Other languages
English (en)
French (fr)
Inventor
Tun Li C/O Gem Machinery Ind Co. Ltd. Su
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.)
GEM MACHINERY IND CO Ltd
Original Assignee
GEM MACHINERY IND 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 GEM MACHINERY IND CO Ltd filed Critical GEM MACHINERY IND CO Ltd
Priority to EP89308898A priority Critical patent/EP0414973A1/de
Priority to AU41035/89A priority patent/AU620139B2/en
Publication of EP0414973A1 publication Critical patent/EP0414973A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/16—Pointing; with or without cutting

Definitions

  • This invention relates to a die set which utilizes a pair of reciprocating concentric positioners to fix a tapping screw in place prior to punch pressing so as to forge a knife-edge of the tapping screw.
  • tapping screws are widely used to force into the material by pressure for making permanent fastenings.
  • the knife-edge of the tapping screw is formed by milling thereby making it impossible for mass production.
  • a punch press is used to forge the knife edge of a tapping screw, but it lacks the concentric positioneis thus producing a lot of unqualified products.
  • the primary object of the present invention to provide a die set which utilizes a pair of reciprocating concentric positioners to fix a tapping screw in place prior to punch pressing so as to forge a knife-edge of the tapping screw.
  • the tapping screw mainly comprises a A die 1 and a B die 2.
  • the A die 1 is constituted by a die seat 11, a packing plate 12, a clamping plate 13, a sleeve 14, a concentric positioner 15, a knife-edge mold 16,, a guide rod 17 and a spring 18.
  • the clamping plate 13 and the packing plate 12 are locked in sequence on the die seat 11, while the knife edge mold 16 is is engaged at the center to the clamping plate 13.
  • a hole extends through the die seat 11, the packing plate 12 and the clamping plate 13 and is designed for receiving a spring 18.
  • a screw 5 is engaged with the bottom of the through hole so as to keep the spring 18 therein.
  • the positioner 15 is partially inserted into the through hole and is associated with the concentric positioner 25 of the B die 2 so as to clamp a tapping screw 3.
  • the sleeve 14 is mounted on the die seat 11 for receiving a guide rod 24 of the B die.
  • the guide rod 17 on the clamping plate 13 of A die is adapted to be received in the sleeve 27 of B die 2 thereby correctly guiding the relative motion between the A, B dies.
  • B die 2 is also constituted by a die seat 21, a packing plate 22, a clamping plate 23, a guide rod 24, a concentric positioner 25, a knife-edge mold 26, an auxiliary sleeve 27, a spring 28 and a withdrawing rod 9.
  • the arrangement of the packing plate 22, the clamping plate 23, the concentric positioner 25 and the knife-edge mold 26 are the same as those of A die 1 and will not be described here in detail.
  • the withdrawing rod 20 is disposed in a hole extending through the die seat 21, the packing plate 22 and the clamping plate 23. The lower end of the 3 withdrawing rod 20 is locaed on the spring 29. The bottom o9f the through hole is sealed by a screw 4.
  • the die set according to the present invention is composed of the A die 1 and the B die 2 and is mounted on a horizontal punch press 6 shown in Fig. 11.
  • the B die 2 is rigidly fixed not he platform of the horizontal punch press 6, while the A die 1 is mounted on a sliding block 61 is controlled by a crank shaft 63 and a link 62 so that the sliding block 61 can be moved to and fro in a horizontal plane thereby pressing the A die 1 against the B die 2.
  • Figs. 4 through 8 show how the present invention works.
  • a vibratory feeder 64 will transfer the tapping screws into preparotory positions via a feeding device 64.
  • the A die 1 is moved by the sliding block 61 towards the B die 2.
  • the two positioners 15 and 25 will clip a tapping screw 3 in a fixed position adapted to the knife-edge molds 16 and 26.
  • the two positioners 15 and 25 will automatically move backwards to compress the springs 18 and 28 further keeping the tapping screw 3 and the knife-edge mold 16 in fixed position.
  • Fig. 9 shows the tapping screw 3 having been forged by the punch pres 6. The unnecessary parts of the knife-edge will be cut off at the same time as screwing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP89308898A 1989-09-01 1989-09-01 Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube Withdrawn EP0414973A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP89308898A EP0414973A1 (de) 1989-09-01 1989-09-01 Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube
AU41035/89A AU620139B2 (en) 1989-09-01 1989-09-04 A die set for forging knife-edge of tapping screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89308898A EP0414973A1 (de) 1989-09-01 1989-09-01 Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube

Publications (1)

Publication Number Publication Date
EP0414973A1 true EP0414973A1 (de) 1991-03-06

Family

ID=8202776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89308898A Withdrawn EP0414973A1 (de) 1989-09-01 1989-09-01 Matrizenset zum schmieden der Schneidkante einer gewinneschneidenden Schraube

Country Status (2)

Country Link
EP (1) EP0414973A1 (de)
AU (1) AU620139B2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110047A (en) * 1999-08-16 2000-08-29 Lin; Tsang-Yao Mold for forming a screw with an auger tip
CN100560260C (zh) * 2008-03-25 2009-11-18 钟伟杰 一种螺丝打头机的双向交错式互动夹具
CN109175184A (zh) * 2018-10-18 2019-01-11 无锡市星达石化配件有限公司 一种便于收集废料的法兰盘锻造台

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100638A (en) * 1977-03-21 1978-07-18 Kalt Manufacturing Company Forging machine
DE2820259A1 (de) * 1977-05-09 1978-11-16 Kameo Dohi Quetsch-zuspitzmaschine
EP0136912A1 (de) * 1983-10-04 1985-04-10 W.A. Deutsher Pty. Ltd. Selbstbohrende Schraube
EP0209305A2 (de) * 1985-07-12 1987-01-21 Yugen Kaisha Shinjoseisakusho Verfahren und Vorrichtung zur Herstellung von Schrauben mit einem Bohr- und einem Räumabschnitt

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1146307A (en) * 1979-09-14 1983-05-17 Edwin J. Skierski Pointing machine for pinch pointing screw blanks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100638A (en) * 1977-03-21 1978-07-18 Kalt Manufacturing Company Forging machine
DE2820259A1 (de) * 1977-05-09 1978-11-16 Kameo Dohi Quetsch-zuspitzmaschine
EP0136912A1 (de) * 1983-10-04 1985-04-10 W.A. Deutsher Pty. Ltd. Selbstbohrende Schraube
EP0209305A2 (de) * 1985-07-12 1987-01-21 Yugen Kaisha Shinjoseisakusho Verfahren und Vorrichtung zur Herstellung von Schrauben mit einem Bohr- und einem Räumabschnitt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110047A (en) * 1999-08-16 2000-08-29 Lin; Tsang-Yao Mold for forming a screw with an auger tip
CN100560260C (zh) * 2008-03-25 2009-11-18 钟伟杰 一种螺丝打头机的双向交错式互动夹具
CN109175184A (zh) * 2018-10-18 2019-01-11 无锡市星达石化配件有限公司 一种便于收集废料的法兰盘锻造台
CN109175184B (zh) * 2018-10-18 2023-10-27 无锡市星达石化配件有限公司 一种便于收集废料的法兰盘锻造台

Also Published As

Publication number Publication date
AU620139B2 (en) 1992-02-13
AU4103589A (en) 1991-04-18

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