GB757101A - Improvements in or relating to the manufacture of workpieces having a polygonal head and a shank - Google Patents

Improvements in or relating to the manufacture of workpieces having a polygonal head and a shank

Info

Publication number
GB757101A
GB757101A GB28867/53A GB2886753A GB757101A GB 757101 A GB757101 A GB 757101A GB 28867/53 A GB28867/53 A GB 28867/53A GB 2886753 A GB2886753 A GB 2886753A GB 757101 A GB757101 A GB 757101A
Authority
GB
United Kingdom
Prior art keywords
head
die
ejector
blank
punch
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
GB28867/53A
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.)
FRTTZ BERNHARN HATEBUR
Original Assignee
FRTTZ BERNHARN HATEBUR
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 FRTTZ BERNHARN HATEBUR filed Critical FRTTZ BERNHARN HATEBUR
Publication of GB757101A publication Critical patent/GB757101A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/18—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of limited length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • 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
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads

Landscapes

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

Abstract

757,101. Making bolts. HATEBUR, F. 13. Oct. 20, 1953 [Oct. 25, 1952], No. 28867/53. Classes 83 (2) and 83 (4). Forging; extruding.-A workpiece having a polygonal head and a shank, particularly a hexagon head bolt, is made by cold working a blank cut off from round stock, comprising upsetting one end of the blank to form a preliminary polygonal head 3, Fig. 6, having a cross-section smaller than that of the desired finished head, further upsetting the head to form a tapered intermediate stage polygonal head 6, Fig. 7, and finish upsetting the head to final shape 11, Fig. 8. The operations are performed in a progressive heading machine. The initial rod is covered with lubricant, for example a phosphate layer, and is sheared into individual blanks 1, Fig. 5 (not shown), which are transferred to the first forging die 20<SP>1</SP>, Fig. 6. The head 3 is upset by a hexagon-shaped punch 191 and simultaneously a tapered end 5 is formed by an adjacent die 20<SP>11</SP> which carries an ejector 22. During its ejection the block is gripped by jaws 17 and conveyed to the second die 25<SP>1</SP>, Fig. 7, within which the end portion 9 is formed by extrusion to the thread diameter of the bolt and the head is further upset by a punch 29. The block is ejected from the die by an ejector 27 and from the punch by an ejector 28. Jaws 32 then convey the blank to the third die 331, Fig. 8, where a tapered end 12 is provided by an adjacent die 33<SP>11</SP> and the head is upset to final shape by a punch comprising an outer part 37 carrying a die 38 and an inner part 39 which also acts as an ejector for removing the blank from the die 38. An ejector 36 is provided to remove the blank from the die 33<SP>1</SP> if necessary. The portion 9 is subsequently threaded by a thread rolling operation. The workpiece may be annealed or tempered before or after the thread rolling.
GB28867/53A 1952-10-25 1953-10-20 Improvements in or relating to the manufacture of workpieces having a polygonal head and a shank Expired GB757101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE757101X 1952-10-25

Publications (1)

Publication Number Publication Date
GB757101A true GB757101A (en) 1956-09-12

Family

ID=6659973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28867/53A Expired GB757101A (en) 1952-10-25 1953-10-20 Improvements in or relating to the manufacture of workpieces having a polygonal head and a shank

Country Status (1)

Country Link
GB (1) GB757101A (en)

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