GB1256815A - - Google Patents

Info

Publication number
GB1256815A
GB1256815A GB1256815DA GB1256815A GB 1256815 A GB1256815 A GB 1256815A GB 1256815D A GB1256815D A GB 1256815DA GB 1256815 A GB1256815 A GB 1256815A
Authority
GB
United Kingdom
Prior art keywords
detector
output
fluid
grinding
controls
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
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 filed Critical
Publication of GB1256815A publication Critical patent/GB1256815A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

1,256,815. Grinding. RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A. 25 Feb., 1970 [4 March, 1969], No. 9019/70. Heading B3D. A speed control device for a grinding wheel advancing mechanism 14 allowing at least two speeds of advance in a grinding machine having a hydrostatically supported workpiece spindle 2 comprises detector means 9 responsive to fluid pressure variations in the hydrostatic bearing fluid, and means 10-13 for changing the advancing speed according to the detector output. The detector 9 consists of a differential manometer responsive to the relative pressure changes in fluid bearing pads 6a, 6b when the grinding wheel 1 strikes a workpiece. An electric signal output from the detector 9, amplified by a unit 10 controls a trigger 11 of adjustable threshold, which, through a power amplifier 12, controls an activator 13 for switching the speed of the mechanism 14 e.g. from initial advance to infeed. The detector output 9 may be produced by a strain gauge or a differential transformer, or in alternative arrangements the detector 9 may have a fluid pressure output signal.
GB1256815D 1969-03-04 1970-02-25 Expired GB1256815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5083869 1969-03-04

Publications (1)

Publication Number Publication Date
GB1256815A true GB1256815A (en) 1971-12-15

Family

ID=11273962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256815D Expired GB1256815A (en) 1969-03-04 1970-02-25

Country Status (4)

Country Link
US (1) US3672100A (en)
DE (1) DE2009363A1 (en)
FR (1) FR2037549A5 (en)
GB (1) GB1256815A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT959396B (en) * 1972-06-06 1973-11-10 Finike Italiana Marposs DEVICE FOR CONTROL OF THE APPROACH SPEED IN MACHINE TOOLS IN PARTICULAR GRINDING MACHINES
JPS5316949B2 (en) * 1973-09-17 1978-06-05
CH580461A5 (en) * 1974-06-06 1976-10-15 Oerlikon Buehrle Ag
US4186527A (en) * 1978-08-07 1980-02-05 Hausermann Abrading Process Company Apparatus for shaping electrodes
US4535570A (en) * 1982-05-04 1985-08-20 Tokyo Shibaura Denki Kabushiki Kaisha Machine for beveling
JPS60119777A (en) 1983-11-30 1985-06-27 Mitsubishi Electric Corp Gate turn-off thyristor
DE3424258C2 (en) * 1984-06-30 1986-12-11 VEGLA Vereinigte Glaswerke GmbH, 5100 Aachen Machine for edge grinding of glass panes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639562A (en) * 1950-02-09 1953-05-26 Landis Tool Co Precision locating device
US2802312A (en) * 1953-11-13 1957-08-13 Cincinnati Milling Machine Co Grinding machine
US2961808A (en) * 1958-03-10 1960-11-29 Machinery Electrification Inc Machine tool with load control
US2984952A (en) * 1958-04-29 1961-05-23 Landis Tool Co Pressure operated feed control for grinding machines

Also Published As

Publication number Publication date
FR2037549A5 (en) 1970-12-31
DE2009363A1 (en) 1971-01-21
US3672100A (en) 1972-06-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees