GB1516995A - Method and apparatus for grinding a workpiece - Google Patents

Method and apparatus for grinding a workpiece

Info

Publication number
GB1516995A
GB1516995A GB3610975A GB3610975A GB1516995A GB 1516995 A GB1516995 A GB 1516995A GB 3610975 A GB3610975 A GB 3610975A GB 3610975 A GB3610975 A GB 3610975A GB 1516995 A GB1516995 A GB 1516995A
Authority
GB
United Kingdom
Prior art keywords
grinding
wheel
workpiece
detector
circuit
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
GB3610975A
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.)
Seiko Seiki KK
Original Assignee
Seiko Seiki KK
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 JP49101241A external-priority patent/JPS5830110B2/en
Priority claimed from JP12380174A external-priority patent/JPS5150081A/en
Priority claimed from JP12412974A external-priority patent/JPS5150082A/en
Application filed by Seiko Seiki KK filed Critical Seiko Seiki KK
Publication of GB1516995A publication Critical patent/GB1516995A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23Q17/0952—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 during machining
    • B23Q17/0961—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 during machining by measuring power, current or torque of a motor
    • 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/12—Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
    • 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
    • G05B2219/37345—Dimension of workpiece, diameter
    • 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
    • G05B2219/37348—Power, wattmeter voltage times current
    • 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
    • G05B2219/37536—Rate of change, derivative

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

1516995 Grinding machine control SEIKO SEIKI KK 2 Sept 1975 [3 Sept 1974 25 Oct 1974 28 Oct 1974] 36109/75 Heading G3N [Also in Division B3] A grinding machine, e.g. a centerless internal grinder 1, effects a comparison between the actual rate at which a grinding wheel 4a removes material from the workpiece W and a predetermined material removal rate. The difference controls the relative infeeding movement of the workpiece and wheel to reduce the difference to zero using servomotor 7. Detector 8 continuously measures the inner diameter of workpiece W while it is being ground and clock pulses from generator 11 are used so that one signal from the size detector 8 at a first clock pulse is subtracted from another signal from detector 8 at a second clock pulse to give a signal related to material removal rate, which is compared with a rate set in circuit 14 in differential amplifier 12 and the result fed to servo-controller 15 which controls motor 7. Schmidt trigger 16 generates outputs P 1 , P 2 when respective predetermined workpiece diameters are detected to stop or reverse table feed or to start finishing grinding. Detector 17 measures wheel spindle power consumption which is proportional to tangential grinding force and this is compared with pre-set values 18 in circuit 19. The wheel grinding ability decreases with each cycle so that, when power consumption reaches a certain value, a circuit passes a signal via circuit 13 to cause the differential amplifier to reduce the predetermined material removal rate. After a certain reduction, the wheel must be dressed. Other embodiments Figs. 3 - 6 (not shown) are concerned with the changeover between rough, fine and finish grinding.
GB3610975A 1974-09-03 1975-09-02 Method and apparatus for grinding a workpiece Expired GB1516995A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP49101241A JPS5830110B2 (en) 1974-09-03 1974-09-03 Kensaku Kakoseigyosouchi
JP12380174A JPS5150081A (en) 1974-10-25 1974-10-25 Kensakukakono kirikomiseigyohoho
JP12412974A JPS5150082A (en) 1974-10-28 1974-10-28 Kensakukako niokeru kirikomi seigyohoshiki

Publications (1)

Publication Number Publication Date
GB1516995A true GB1516995A (en) 1978-07-05

Family

ID=27309415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3610975A Expired GB1516995A (en) 1974-09-03 1975-09-02 Method and apparatus for grinding a workpiece

Country Status (3)

Country Link
DD (1) DD119733A1 (en)
DE (1) DE2537630C2 (en)
GB (1) GB1516995A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120404A (en) * 1982-04-27 1983-11-30 Csepel Muvek Szerszamgepgyarak Electronically controlled automatic thread grinding machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911320A1 (en) * 1979-03-22 1980-10-02 Fortuna Werke Maschf Ag METHOD FOR CONTROLLING, ERROR CORRECTION AND DETERMINING CHANGING SIZES IN GRINDING MACHINES FOR GRINDING WORKPIECES AND MEANS FOR IMPLEMENTING THE METHOD
DE3311861A1 (en) * 1983-03-31 1984-10-04 Werkzeugmaschinenbau Präzisions-Technik GmbH Wertheim, 6980 Wertheim METHOD FOR MONITORING THE OPERATING BEHAVIOR OF PROJECTION-MOLD GRINDING MACHINES
DE3728390A1 (en) * 1987-08-26 1989-03-09 Lach Spezial Werkzeuge Gmbh METHOD FOR CONTROLLING THE INPUT AND TOUCH MOTION OF A GRINDING WHEEL
CN1055652C (en) * 1993-03-12 2000-08-23 胡强 Time-controlled grinding method and apparatus
AT403895B (en) * 1994-08-01 1998-06-25 Weber Gisela Method of producing a component mounted in a rotatable and/or slidable manner
DE102004019931B4 (en) * 2004-04-21 2012-01-05 Schneider Gmbh & Co. Kg Correction procedure for cutting machines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504581A (en) * 1967-04-24 1970-04-07 Gen Electric Apparatus for early detection of tool chatter in machining operations
US3589077A (en) * 1968-06-05 1971-06-29 Cincinnati Milacron Inc Control for cutting tool
US3634974A (en) * 1968-12-25 1972-01-18 Toyoda Machine Works Ltd Automatic control device for a grinding machine
US3694969A (en) * 1970-05-22 1972-10-03 Heald Machine Co Automatic grinding machine
DE2044083A1 (en) * 1970-09-05 1972-03-30 Fortuna Werke Maschf Ag Control device for a grinding machine
GB1349563A (en) * 1971-03-01 1974-04-03 Werkzeugmasch Okt Veb Control systems for gear cutting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120404A (en) * 1982-04-27 1983-11-30 Csepel Muvek Szerszamgepgyarak Electronically controlled automatic thread grinding machine

Also Published As

Publication number Publication date
DE2537630A1 (en) 1976-03-11
DE2537630C2 (en) 1986-06-26
DD119733A1 (en) 1976-05-12

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950901