GB1025298A - Improvements in or relating to the manufacture of toothed bolts for vehicle door locks - Google Patents

Improvements in or relating to the manufacture of toothed bolts for vehicle door locks

Info

Publication number
GB1025298A
GB1025298A GB4025464A GB4025464A GB1025298A GB 1025298 A GB1025298 A GB 1025298A GB 4025464 A GB4025464 A GB 4025464A GB 4025464 A GB4025464 A GB 4025464A GB 1025298 A GB1025298 A GB 1025298A
Authority
GB
United Kingdom
Prior art keywords
die
workpiece
punch
pressed
escape
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.)
Expired
Application number
GB4025464A
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.)
Caltexa Trust
Original Assignee
Caltexa Trust
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 Caltexa Trust filed Critical Caltexa Trust
Publication of GB1025298A publication Critical patent/GB1025298A/en
Expired legal-status Critical Current

Links

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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

1,025,298. Making toothed gears for vehilce door locks; forging; extruding. CALTEX TRUST REG. Oct. 2, 1964 [Oct. 14, 1963], No. 40254/64. Headings B3A, B3H and B3P. A toothed bolt for a vehicle door lock is made by cold pressing a disc workpiece between a punch 14 and die 9, 10, 11, the die having channels 12 for the escape of lubricant during pressing whereby sharp corners can be formed on the pressed workpiece. A starting blank cut from bar stack is first coldupset into a disc, Figs. 1, 2 (not shown) which is placed in a die 9, 10 and pressed therein by a punch 14 having a part-conical working end face. Part of the workpiece is extruded through a throat in die element 10 and is first upset by ejector 13, to provide a sharp lower edge, before removal thereby from the die. In a second die assembly 15, 16, 17, Fig. 6 (not shown), the workpiece is cold pressed by punch 23 to its final shape 4 including the formation of external teeth on the central part. An upper projection is formed by backward extrusion. Oil escape channels such as 18 are provided and the tooth-forming recesses in the die part 16 have ducts 20, Figs. 7, 8 (not shown) for the escape of air and lubricant.
GB4025464A 1963-10-14 1964-10-02 Improvements in or relating to the manufacture of toothed bolts for vehicle door locks Expired GB1025298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR950512A FR1464560A (en) 1963-10-14 1963-10-14 Motor vehicle door locks and devices for their manufacture

Publications (1)

Publication Number Publication Date
GB1025298A true GB1025298A (en) 1966-04-06

Family

ID=8814330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4025464A Expired GB1025298A (en) 1963-10-14 1964-10-02 Improvements in or relating to the manufacture of toothed bolts for vehicle door locks

Country Status (2)

Country Link
FR (1) FR1464560A (en)
GB (1) GB1025298A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015461A (en) * 1972-07-27 1977-04-05 Bayerische Leichtmetallwerk Graf Bluecher Von Wahlstatt Kg Closed drop forging die
GB2207876A (en) * 1987-07-21 1989-02-15 Seiko Epson Corp Timepiece gear member

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026908B (en) * 1978-07-31 1982-11-10 Bishop A E Method of making sterring racks
FR2540758B1 (en) * 1983-02-15 1986-03-07 Meca Ind Speciales Atel COLD FORMING TOOLS OF METAL PARTS COMPRISING OPPOSITE AXIAL ELEMENTS
CN111687370A (en) * 2020-06-22 2020-09-22 浙江明泰控股发展股份有限公司 Forming process and forming device of cap nut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015461A (en) * 1972-07-27 1977-04-05 Bayerische Leichtmetallwerk Graf Bluecher Von Wahlstatt Kg Closed drop forging die
GB2207876A (en) * 1987-07-21 1989-02-15 Seiko Epson Corp Timepiece gear member
GB2207876B (en) * 1987-07-21 1991-06-05 Seiko Epson Corp Timepiece gear member

Also Published As

Publication number Publication date
FR1464560A (en) 1967-01-06

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