GB1251089A - - Google Patents

Info

Publication number
GB1251089A
GB1251089A GB1251089DA GB1251089A GB 1251089 A GB1251089 A GB 1251089A GB 1251089D A GB1251089D A GB 1251089DA GB 1251089 A GB1251089 A GB 1251089A
Authority
GB
United Kingdom
Prior art keywords
force
slide
spindle
signal
grinding
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 GB1251089A publication Critical patent/GB1251089A/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

1,251,089. Automatic force control. HEALD MACHINE CO. Feb. 28, 1969 [March 4, 1968], No. 10893/69. Heading G3R. The transverse force on a rotary spindle carrying an abrasive grinding wheel is measured and compared with a desired force in an electrical system controlling a hydraulic actuator which automatically corrects deviations from the desired force. In Fig. 1, an abrasive wheel 21 mounted on a cross-slide 14 is rotated to grind internally a workpiece 13 which is mounted on a head 12 for rotation and axial movement. The bending force on grinding wheel spindle 19 is measured by an electrical inductive proximity transducer in a bridge circuit detecting lateral movement of a bronze collar on the spindle. The signal from the gauge is compared with a signal representing the desired force so that any error is effective through a hydraulic servosystem 25, 15 to control the transverse position of cross-slide 14 and thereby restore to the force to the desired value. Movement of the slide is damped by a dashpot 22. The desired value signal may be varied according to a programme determined by a punched card associated with a digital computer. This signal is also applied to control a motor 23 adjusting the position of spindle 19 above a pivot 17 so that the axis of wheel 21 is maintained parallel to the axis of the workpiece despite variations of force on the grinding wheel. A relay is operated to terminate grinding by a predetermined voltage from an inductive transducer 16 detecting the transverse position of the cross-slide. This voltage is modified by the voltage from the proximity gauge so that the finished size is independent of the grinding force.
GB1251089D 1968-03-04 1969-02-28 Expired GB1251089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71036368A 1968-03-04 1968-03-04

Publications (1)

Publication Number Publication Date
GB1251089A true GB1251089A (en) 1971-10-27

Family

ID=24853730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1251089D Expired GB1251089A (en) 1968-03-04 1969-02-28

Country Status (3)

Country Link
US (1) US3555741A (en)
DE (1) DE1910690A1 (en)
GB (1) GB1251089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207623A (en) * 1987-07-25 1989-02-08 Francis Malcolm John Nickols Boring head for machine tools and related machining method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840860B1 (en) * 1970-08-28 1973-12-03
US4653235A (en) * 1985-11-20 1987-03-31 Ex-Cell-O Corporation Superabrasive grinding with variable spark-out and wheel dressing intervals
US4628643A (en) * 1985-11-27 1986-12-16 Ex-Cell-O Corporation Grinding wheel infeed control method
AT390494B (en) * 1987-12-11 1990-05-10 Vaillant Gmbh EXHAUST GAS GUIDE FOR AT LEAST TWO ADJUSTING BURNER-HEATED DEVICES
US5044125A (en) * 1988-09-02 1991-09-03 Cincinnati Milacron-Heald Corp. Method and apparatus for controlling grinding processes
US5025594A (en) * 1988-09-02 1991-06-25 Cincinnati Milacron-Heald Corp. Method and apparatus for controlling grinding processes
US5042206A (en) * 1988-09-02 1991-08-27 Cincinnati Milacron-Heald Corp. Method and apparatus for controlling grinding processes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207623A (en) * 1987-07-25 1989-02-08 Francis Malcolm John Nickols Boring head for machine tools and related machining method
US5035554A (en) * 1987-07-25 1991-07-30 Nickols Francis M J Method for determining the radius described by a tool

Also Published As

Publication number Publication date
US3555741A (en) 1971-01-19
DE1910690A1 (en) 1969-10-02

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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