JPS56163807A - Chuck for machine tool - Google Patents

Chuck for machine tool

Info

Publication number
JPS56163807A
JPS56163807A JP6562880A JP6562880A JPS56163807A JP S56163807 A JPS56163807 A JP S56163807A JP 6562880 A JP6562880 A JP 6562880A JP 6562880 A JP6562880 A JP 6562880A JP S56163807 A JPS56163807 A JP S56163807A
Authority
JP
Japan
Prior art keywords
chuck
wedge block
chucking
centrifugal force
master jaw
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
JP6562880A
Other languages
Japanese (ja)
Inventor
Akimitsu Nagae
Minoru Tashiro
Kunio Ono
Kunitoshi Gotanda
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.)
Yamazaki Mazak Corp
Original Assignee
Yamazaki Mazak Corp
Yamazaki Machinery Works Ltd
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 Yamazaki Mazak Corp, Yamazaki Machinery Works Ltd filed Critical Yamazaki Mazak Corp
Priority to JP6562880A priority Critical patent/JPS56163807A/en
Publication of JPS56163807A publication Critical patent/JPS56163807A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/16045—Jaws movement actuated by screws and nuts or oblique racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/14—Chucks with simultaneously-acting jaws, whether or not also individually adjustable involving the use of centrifugal force
    • B23B31/141—To counterbalance the jaws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

PURPOSE: To prevent the reduction in the chucking force due to the centrifugal force working on the jaws through the utilization of centrifugal force which works on the parts of the chucking mechanism of the chuck in a chuck for setting a round work on a machine tool.
CONSTITUTION: The centrifugal force working on the master jaw 1 acts in a direction A to reduce the chucking strength. However, when the center of gravity of a wedge block 2 is positioned at G which is separated in the direction of the wedge block 2 from the center axis of the chuck perpendicular to the axis of movement of the wedge block 2, a centrifugal force works on the wedge block 2 in a direction B which is deviated from the direction A by an angle of θ. This centrifugal force working in the direction B applies a component force thereof to the wedge block 2 to move the wedge block 2 in a direction C. This component force is increased by a wedge engaged with the master jaw 1 and works on the master jaw 1 so as to urge the master jaw 1 in a direction D (chucking direction) thus preventing the decrease in the chucking strength of the chuck.
COPYRIGHT: (C)1981,JPO&Japio
JP6562880A 1980-05-16 1980-05-16 Chuck for machine tool Pending JPS56163807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6562880A JPS56163807A (en) 1980-05-16 1980-05-16 Chuck for machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6562880A JPS56163807A (en) 1980-05-16 1980-05-16 Chuck for machine tool

Publications (1)

Publication Number Publication Date
JPS56163807A true JPS56163807A (en) 1981-12-16

Family

ID=13292466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6562880A Pending JPS56163807A (en) 1980-05-16 1980-05-16 Chuck for machine tool

Country Status (1)

Country Link
JP (1) JPS56163807A (en)

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