GB710517A - Improvements in or relating to broaching machines - Google Patents

Improvements in or relating to broaching machines

Info

Publication number
GB710517A
GB710517A GB24655/51A GB2465551A GB710517A GB 710517 A GB710517 A GB 710517A GB 24655/51 A GB24655/51 A GB 24655/51A GB 2465551 A GB2465551 A GB 2465551A GB 710517 A GB710517 A GB 710517A
Authority
GB
United Kingdom
Prior art keywords
links
cutters
slot
cutter
slots
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
GB24655/51A
Inventor
John Sewell Smith
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.)
RICHARD GARRETT ENGINEERING WO
Original Assignee
RICHARD GARRETT ENGINEERING WO
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 RICHARD GARRETT ENGINEERING WO filed Critical RICHARD GARRETT ENGINEERING WO
Priority to GB24655/51A priority Critical patent/GB710517A/en
Publication of GB710517A publication Critical patent/GB710517A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D37/00—Broaching machines or broaching devices
    • B23D37/18—Broaching machines with working tools mounted on an endless chain or belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D37/00—Broaching machines or broaching devices
    • B23D37/02—Broaching machines with horizontally-arranged working tools
    • B23D37/06—Broaching machines with horizontally-arranged working tools for broaching outer surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Abstract

710,517. Broaching. GARRETT ENGINEERING WORKS, Ltd., R. Oct. 22, 1952 [Oct. 22, 1951], No. 24655/51. Class 83 (3) A broaching machine, particularly for torming the arms of T-slots, comprising a number of cutters 4 of progressively increasing size mounted on the links 7 of an endless chain. Two or more chains may cut slots of different sizes, each being driven by a separate motor 15 through reduction gearing and the chains may be horizontal, vertical or inclined. Five cutters 4 are secured in each cutting link 7 by wedges 14 held down by screws and the pivot pins 8 have rollers 9 which engage in notches in the sprockets 5, 6 and also between a pair of guide plates 10, 11 adjacent the work table 3. A vertical gap in both plates 10, 11 provides sideways guidance for the links. The work 1, which already has a straight-sided slot 2, is located on the work table with the sides of the slots engaging closely with the protruding part 7a of two links which are not fitted with cutters and the chain is then set in motion so that successive cutters gradually form the undercut portion of the slot. The first two links may, as shown in Fig. 2, have no protruding portion and be followed by a locating link having a protruding portion 7b. The protruding parts 7a of the cutter links engage the sides of the slots closely so that they also constitute locating links but they may alternatively be narrower than the slot, in which case the cutters keep the work correctly positioned. Where a link acts as a locating link, its leading sides are tapered so that it will enter the slot easily and the front side is bevelled so that, if it cannot enter the slot, it will push the work away. If all the links are formed as cutter links, the size of slot cut can be maintained as the cutters wear by removing the first cutter of the series and placing a cutter of maximum size in a vacant space at the end of the series. Automatic means, such as an air blast, may be provided for removing swarf. The Provisional Specification describes also a common drive for the chains.
GB24655/51A 1951-10-22 1951-10-22 Improvements in or relating to broaching machines Expired GB710517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24655/51A GB710517A (en) 1951-10-22 1951-10-22 Improvements in or relating to broaching machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24655/51A GB710517A (en) 1951-10-22 1951-10-22 Improvements in or relating to broaching machines

Publications (1)

Publication Number Publication Date
GB710517A true GB710517A (en) 1954-06-16

Family

ID=10215146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24655/51A Expired GB710517A (en) 1951-10-22 1951-10-22 Improvements in or relating to broaching machines

Country Status (1)

Country Link
GB (1) GB710517A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198647B (en) * 1960-09-23 1965-08-12 Klink Karl Chain clearing machine
GB2274414A (en) * 1993-01-26 1994-07-27 Marbaix Lapointe Ltd Broaching tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198647B (en) * 1960-09-23 1965-08-12 Klink Karl Chain clearing machine
GB2274414A (en) * 1993-01-26 1994-07-27 Marbaix Lapointe Ltd Broaching tool

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