GB862972A - Improvements in or relating to automatically controlled machine tools - Google Patents

Improvements in or relating to automatically controlled machine tools

Info

Publication number
GB862972A
GB862972A GB9066/56A GB906656A GB862972A GB 862972 A GB862972 A GB 862972A GB 9066/56 A GB9066/56 A GB 9066/56A GB 906656 A GB906656 A GB 906656A GB 862972 A GB862972 A GB 862972A
Authority
GB
United Kingdom
Prior art keywords
tool
workpiece
thyratron
march
relay
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
GB9066/56A
Inventor
Charles Alan Judson
Eric Kellett
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.)
Birmingham Small Arms Co Ltd
Original Assignee
Birmingham Small Arms Co 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 Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Priority to GB9066/56A priority Critical patent/GB862972A/en
Publication of GB862972A publication Critical patent/GB862972A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4065—Monitoring tool breakage, life or condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0995—Tool life management
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37252—Life of tool, service life, decay, wear estimation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37351—Detect vibration, ultrasound
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling

Abstract

862,972. Electric measuring and control systems. BIRMINGHAM SMALL ARMS CO. Ltd. March 21, 1957 [March 23, 1956], No. 9066/56. Class 40 (1). [Also in Groups XXII and XL (b)] In a machine tool such as a lathe in which the tool is controlled from a coded record, excessive wear of the tool is detected by a vibration detector resting on the cutting-tool, or by a stylus resting on the machined workpiece, or by a differential photo-cell arrangement comparing the light reflected from the machined workpiece with that from a standard workpiece. The detectors produce an increased output with tool wear, which, after amplification and rectification operates a thyratron or other relay to energize an alarm circuit, and initiate means for automatically replacing the worn tool and repositioning it relative to the workpiece. The thyratron or relay is delayed from returning to its normal condition for a predetermined time. If another fault signal is received during this delay a further alarm is operated and the machine stopped. Specifications 841,682, 860,255, 860,256 and 860,257 are referred to.
GB9066/56A 1956-03-23 1956-03-23 Improvements in or relating to automatically controlled machine tools Expired GB862972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9066/56A GB862972A (en) 1956-03-23 1956-03-23 Improvements in or relating to automatically controlled machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9066/56A GB862972A (en) 1956-03-23 1956-03-23 Improvements in or relating to automatically controlled machine tools

Publications (1)

Publication Number Publication Date
GB862972A true GB862972A (en) 1961-03-15

Family

ID=9864735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9066/56A Expired GB862972A (en) 1956-03-23 1956-03-23 Improvements in or relating to automatically controlled machine tools

Country Status (1)

Country Link
GB (1) GB862972A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143041A (en) * 1961-01-27 1964-08-04 Vectron Electro Physics Ltd Control for machine tool utilizing a vibrating crystal
GB2160320A (en) * 1984-06-12 1985-12-18 Tampella Oy Ab Optimizing percussive drilling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143041A (en) * 1961-01-27 1964-08-04 Vectron Electro Physics Ltd Control for machine tool utilizing a vibrating crystal
GB2160320A (en) * 1984-06-12 1985-12-18 Tampella Oy Ab Optimizing percussive drilling

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