GB687620A - Improvements relating to the production of twist drills - Google Patents

Improvements relating to the production of twist drills

Info

Publication number
GB687620A
GB687620A GB2701/51A GB270151A GB687620A GB 687620 A GB687620 A GB 687620A GB 2701/51 A GB2701/51 A GB 2701/51A GB 270151 A GB270151 A GB 270151A GB 687620 A GB687620 A GB 687620A
Authority
GB
United Kingdom
Prior art keywords
sleeve
chuck
drill
production
spindle
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
GB2701/51A
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.)
WEDEVAGS BRUKS AB
Original Assignee
WEDEVAGS BRUKS AB
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 WEDEVAGS BRUKS AB filed Critical WEDEVAGS BRUKS AB
Publication of GB687620A publication Critical patent/GB687620A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/04—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for fluting drill shanks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Abstract

687,620. Chucks. WEDEVAGS BRUKS AKTIEBOLAG. Feb. 2, 1951 [March 1, 1950], No. 2701/51. Class 83 (iii). [Also in Group XXIII] The lower end of the sleeve 4 of a drillgrinding machine contains a drill chuck 7 urged downwardly by a spring 8, downward movement being limited by an end-piece 9 on the lower end of the spindle 1. The chuck 7 has a conical portion co-operating with a conical portion of the sleeve 4, so that the chuck is normally closed on the bar stock which is introduced through the spindle and sleeve. After the completion of one drill, the sleeve 4 is pushed upwards by the spring 8, whereby the chuck 7 is opened. The drill blank is then pushed forward to the required extent in order to produce a fresh drill.
GB2701/51A 1950-03-01 1951-02-02 Improvements relating to the production of twist drills Expired GB687620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE687620X 1950-03-01

Publications (1)

Publication Number Publication Date
GB687620A true GB687620A (en) 1953-02-18

Family

ID=20315094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2701/51A Expired GB687620A (en) 1950-03-01 1951-02-02 Improvements relating to the production of twist drills

Country Status (1)

Country Link
GB (1) GB687620A (en)

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