GB1326870A - Adjustable boring bar - Google Patents

Adjustable boring bar

Info

Publication number
GB1326870A
GB1326870A GB2029372A GB2029372A GB1326870A GB 1326870 A GB1326870 A GB 1326870A GB 2029372 A GB2029372 A GB 2029372A GB 2029372 A GB2029372 A GB 2029372A GB 1326870 A GB1326870 A GB 1326870A
Authority
GB
United Kingdom
Prior art keywords
rod
tube
fixed
boring bar
screw
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
GB2029372A
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.)
Sandvik AB
Original Assignee
Sandvik 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 Sandvik AB filed Critical Sandvik AB
Publication of GB1326870A publication Critical patent/GB1326870A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03421—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by pivoting the tool carriers or by elastic deformation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Earth Drilling (AREA)

Abstract

1326870 Boring bars SANDVIK AB 2 May 1972 [6 May 1971] 20293/72 Heading B3C A boring bar comprises a rod 10, and a surrounding tube 11, the rod being fixed in the tube at portion 12, and spaced therefrom at portion 13, setting means 15, 16 for exerting lateral pressure so as to bend the rod and tube in opposite directions in order to vary the cutting radius of a cutter bit 18. The bit holder is fixed to the tube, but in a modification it is fixed to the rod. Setting screw 15 has a graduated head 16, and a second screw (19) Fig. 4 (not shown) is provided for counteracting the cutting forces. Rod 10 may be of sintered carbide, and tube 11 of steel.
GB2029372A 1971-05-06 1972-05-02 Adjustable boring bar Expired GB1326870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE587271A SE351147B (en) 1971-05-06 1971-05-06

Publications (1)

Publication Number Publication Date
GB1326870A true GB1326870A (en) 1973-08-15

Family

ID=20267424

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2029372A Expired GB1326870A (en) 1971-05-06 1972-05-02 Adjustable boring bar

Country Status (5)

Country Link
JP (1) JPS5313981Y2 (en)
FR (1) FR2135646B1 (en)
GB (1) GB1326870A (en)
IT (1) IT953776B (en)
SE (1) SE351147B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483807A2 (en) * 1990-11-02 1992-05-06 Kiyoshi Miyashita Boring bar

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586951B1 (en) * 1985-09-09 1994-08-12 Saint Etienne Fabrique Outilla BORING APPARATUS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483807A2 (en) * 1990-11-02 1992-05-06 Kiyoshi Miyashita Boring bar
EP0483807A3 (en) * 1990-11-02 1992-09-02 Kiyoshi Miyashita Boring bar

Also Published As

Publication number Publication date
FR2135646A1 (en) 1972-12-22
JPS4734186U (en) 1972-12-16
JPS5313981Y2 (en) 1978-04-14
IT953776B (en) 1973-08-10
SE351147B (en) 1972-11-20
FR2135646B1 (en) 1973-07-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee