GB882791A - Torque responsive control device - Google Patents

Torque responsive control device

Info

Publication number
GB882791A
GB882791A GB2981959A GB2981959A GB882791A GB 882791 A GB882791 A GB 882791A GB 2981959 A GB2981959 A GB 2981959A GB 2981959 A GB2981959 A GB 2981959A GB 882791 A GB882791 A GB 882791A
Authority
GB
United Kingdom
Prior art keywords
chuck
clutch
overload
shaft
spring
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
GB2981959A
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.)
WILLIAM CRAWFORD EDDY
Original Assignee
WILLIAM CRAWFORD EDDY
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
Priority claimed from US754595A external-priority patent/US2973067A/en
Application filed by WILLIAM CRAWFORD EDDY filed Critical WILLIAM CRAWFORD EDDY
Priority to GB2981959A priority Critical patent/GB882791A/en
Publication of GB882791A publication Critical patent/GB882791A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05GCONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00Mechanical devices for initiating a movement automatically due to a specific cause
    • G05G15/08Mechanical devices for initiating a movement automatically due to a specific cause due to the load or torque on a member, e.g. if exceeding a predetermined value thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/04Arrangements preventing overload of tools, e.g. restricting load
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/12Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion

Abstract

882,791. Clutch control. EDDY, W. C. Sept. 1, 1959, No. 29819/59. Class 80 (2). [Also in Group XXII] A torque responsive control arrangement reverses the direction of rotation of the tool of a machine tool upon overload, which is driven by a reversible pneumatic motor 12. On the occurrence of overload an electric circuit is completed to reverse a valve 132 controlling the supply and exhaust of air to the motor 12. At the same time a solenoid operated valve 72 is actuated to open the cylinder of a clutchoperating piston 60 to exhaust so that a friction clutch 30, 32 in the drive to a chuck 14 is disengaged by a spring 54. A time-delay relay subsequently opens the circuit to the valve 72 so that air pressure is applied to the piston 60 to re-engage the clutch so that the chuck is driven in reverse. The driven plate 30 of the clutch is connected by a spring 110, which yields on overload, to a shaft 34 driving the chuck. When the spring yields a contact arm 118 fast with the clutch plate 30 engages a contact 119 or 120 adjustably mounted on the shaft 34 to complete the electric circuit. Adjustment of contacts 119, 120 varies the maximum torque transmittable. As described, the mechanism is applied to a tapping machine and the shaft 34 drives the chuck through a pin-and-slot connection, allowing axial movement of the chuck so that the tapping die can feed itself on to the work. Limit switches are included in the electric circuit for reversing the motor at the ends of the stroke of the chuck.
GB2981959A 1959-09-01 1959-09-01 Torque responsive control device Expired GB882791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2981959A GB882791A (en) 1959-09-01 1959-09-01 Torque responsive control device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US754595A US2973067A (en) 1958-08-12 1958-08-12 Torque responsive control device
GB2981959A GB882791A (en) 1959-09-01 1959-09-01 Torque responsive control device

Publications (1)

Publication Number Publication Date
GB882791A true GB882791A (en) 1961-11-22

Family

ID=10297684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2981959A Expired GB882791A (en) 1959-09-01 1959-09-01 Torque responsive control device

Country Status (1)

Country Link
GB (1) GB882791A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505695A1 (en) * 1981-05-15 1982-11-19 Desoutter Ltd MOTOR TOOL FOR PLACING TAP INSERTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505695A1 (en) * 1981-05-15 1982-11-19 Desoutter Ltd MOTOR TOOL FOR PLACING TAP INSERTS

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