JPS5570516A - Boring tool with three or more cutting blades - Google Patents

Boring tool with three or more cutting blades

Info

Publication number
JPS5570516A
JPS5570516A JP14165278A JP14165278A JPS5570516A JP S5570516 A JPS5570516 A JP S5570516A JP 14165278 A JP14165278 A JP 14165278A JP 14165278 A JP14165278 A JP 14165278A JP S5570516 A JPS5570516 A JP S5570516A
Authority
JP
Japan
Prior art keywords
cutting blades
boring tool
hole
tool
bolts
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.)
Pending
Application number
JP14165278A
Other languages
Japanese (ja)
Inventor
Akio Yamada
Shohachi Shimizu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP14165278A priority Critical patent/JPS5570516A/en
Publication of JPS5570516A publication Critical patent/JPS5570516A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/108—Bits for countersinking having a centering drill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/004—Adjustable elements

Landscapes

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

Abstract

PURPOSE:To provide a boring tool which can easily open a preparatory hole in a panel of formed concrete or the like, by shaping the cross section of the body of the tool continuous to its shank as a polygon and mounting cutting blades on the sides of the body of the bit so that the blades can be spread. CONSTITUTION:Clamping bolts 10 for a boring tool 1 are loosened. Three cutting blades 9 are inclined at the same angle in the direction of an arrow P centering the bolts 10. The bolts are tightened so that the cutting blades 9 are firmly secured on the sides of the body 4 of the boring tool 1 at an inclination angle of theta to the axis C-C the tool. The sharp-pointed tip 5 of the body 4 is thrusted to a desired position in a workpiece W to bore a preparatory hole G. The hole is enlarged by the cutting edges 13 of the cutting blades 9. A hole H with a desired diameter of D is thus opened.
JP14165278A 1978-11-16 1978-11-16 Boring tool with three or more cutting blades Pending JPS5570516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14165278A JPS5570516A (en) 1978-11-16 1978-11-16 Boring tool with three or more cutting blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14165278A JPS5570516A (en) 1978-11-16 1978-11-16 Boring tool with three or more cutting blades

Publications (1)

Publication Number Publication Date
JPS5570516A true JPS5570516A (en) 1980-05-28

Family

ID=15297019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14165278A Pending JPS5570516A (en) 1978-11-16 1978-11-16 Boring tool with three or more cutting blades

Country Status (1)

Country Link
JP (1) JPS5570516A (en)

Similar Documents

Publication Publication Date Title
GB1463785A (en) Spade drill bit
EP0941795A3 (en) Complex cutting-blade tool and machining method using same
GB1452672A (en) Drilling tool
EP0334002A3 (en) Thread milling cutter
CA2040052A1 (en) Rock drill
GB1484111A (en) Device for connecting the bits with the cutting head of a drift advancing machine or the like
ES275758Y (en) FAST SELF-CUTTING SCREW
JPS5570516A (en) Boring tool with three or more cutting blades
GB1125054A (en) Improvements relating to radial fine adjustment of the cutting edge of a tool
GB593622A (en) Improvements in or relating to drill bits, cutting tools and the like
FR2298406A1 (en) Counterbore units for twist drill - has contoured cutters on chuck jaws to machine hole countersink
GB1029476A (en) A deep-hole drill
JPS56134112A (en) Clamp type boring tool
JPS5721212A (en) Driling tool
CN212191287U (en) Boring bar capable of preventing boring cutter tool from being damaged
GB570098A (en) Improvements in centre and like drills
JPS5554112A (en) Single-edge drill
FR2303650A1 (en) FLOWER FOR DRILLING HOLES
GB1360173A (en) Rotary cutting tools
JPS645703A (en) Tool setting holder
CN86206611U (en) Bolt-withdrawing device
GB1311652A (en) Boring tools
JPS5554111A (en) Single-edge drill
ES272975U (en) Supplementary tool for percussion boring machine.
GB602943A (en) Expansible augers or bits