GB1147255A - Control system for grinding machines - Google Patents

Control system for grinding machines

Info

Publication number
GB1147255A
GB1147255A GB36175/67A GB3617567A GB1147255A GB 1147255 A GB1147255 A GB 1147255A GB 36175/67 A GB36175/67 A GB 36175/67A GB 3617567 A GB3617567 A GB 3617567A GB 1147255 A GB1147255 A GB 1147255A
Authority
GB
United Kingdom
Prior art keywords
abrasive belt
roll
reference signal
motor
workpiece
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
GB36175/67A
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.)
Unifrax 1 LLC
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Publication of GB1147255A publication Critical patent/GB1147255A/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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load

Abstract

1,147,255. Grinding. CARBORUNDUM CO. 7 Aug., 1967 [9 Aug., 1966], No. 36175/67. Heading B3D. [Also in Division G3] A control system for a grinding machine having (i) an abrasive belt, (ii) an electric motor for driving said abrasive belt, and (iii) an infeed roller engageable with and rotatable by a workpiece as it advances thereby, comprises (a) means for generating a signal responsive to current drawn by said motor, (b) means for generating a reference signal, (c) means controlled by said infeed roller for modifying said reference signal to compensate for wear of said abrasive belt, (d) means for comparing said signals, and (e) means responsive to said comparing means for adjusting the grinding pressure of said abrasive belt on the workpiece. An abrasive belt 18 is driven by an electric motor 12. The workpiece W in the form of a continuous strip of stock is advanced from a pay off roll 22 through a tensioning means, over an infeed roll 24, under a guide roll 26, the belt 18 and a guide roll 28, over an outfeed roll 30 to a take-up roll 32. A back up roller 34 is actuated by an hydraulic cylinder 40, the depth of metal removed from the surface of a workpiece depending primarily on the force imposed by the roller. The flow of hydraulic fluid in conduits 42, 44 connected to the cylinder is controlled by an hydraulic servo control valve 46 controlled by a control circuit 48 responsive to the current in the motor 12. The control circuit is similar to that described in Specification 1,142,566, a signal responsive to current drawn by the motor 12 being applied to a control winding 78 of a servo valve control unit 80 and a reference signal being supplied to a control winding 82 of the unit 80. To effect automatic variation of the reference signal to compensate for wear of the belt 18, a program control unit 180 is included in the reference signal circuit. The unit 180 comprises a variable resistor 182 having a movable contact 196 operated by a cam 188 driven by a self synchronous motor 186 driven by a selfsynchronous generator 185 driven, through a variable speed transmission 184, by the infeed roller 24. The cam 188 makes one revolution during the life of an abrasive belt and is shaped to establish an initial low grinding pressure which is rapidly increased at the outset and then increased, by gradually decreasing amounts.
GB36175/67A 1966-08-09 1967-08-07 Control system for grinding machines Expired GB1147255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57127166A 1966-08-09 1966-08-09

Publications (1)

Publication Number Publication Date
GB1147255A true GB1147255A (en) 1969-04-02

Family

ID=24283010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36175/67A Expired GB1147255A (en) 1966-08-09 1967-08-07 Control system for grinding machines

Country Status (6)

Country Link
US (1) US3524285A (en)
DE (1) DE1652010A1 (en)
FR (1) FR1533805A (en)
GB (1) GB1147255A (en)
NO (1) NO125308B (en)
SE (1) SE328213B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440472A (en) * 2014-11-19 2015-03-25 德清德沃装饰材料有限公司 Roller type wood veneer sanding machine
CN105598796A (en) * 2016-03-17 2016-05-25 余晓娜 Wiredrawing, polishing and grinding system for metal plates

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840863B1 (en) * 1970-10-02 1973-12-03
JPS5016551B1 (en) * 1970-12-19 1975-06-13
AU461290B2 (en) * 1970-12-29 1975-05-22 Toshiba Machine Co. Ltd. Method and apparatus for in-feed control for improving the accuracy of machining of a workpiece
US3736704A (en) * 1971-05-17 1973-06-05 Cincinnati Milacron Heald Grinding machine
US3913277A (en) * 1972-09-01 1975-10-21 Cincinnati Milacron Heald Grinding machine
JPS5216837B2 (en) * 1973-07-17 1977-05-11
JPS5222471B2 (en) * 1973-10-05 1977-06-17
US4014142A (en) * 1974-01-16 1977-03-29 Norton Company Method and apparatus for grinding at a constant metal removal rate
DE2517001A1 (en) * 1975-04-17 1976-10-21 Buderus Eisenwerk METHOD AND DEVICE FOR CONTROLLING THE FEED OF A GRINDING WHEEL
DE3103874A1 (en) * 1981-02-05 1982-09-09 Basf Ag, 6700 Ludwigshafen METHOD AND DEVICE FOR PROCESSING THE SURFACE OF MAGNETIC RECORDING CARRIERS
JPS59156507A (en) * 1983-02-25 1984-09-05 Ishikawajima Harima Heavy Ind Co Ltd Grinding device of rolling roll
US4488382A (en) * 1983-04-29 1984-12-18 Allis-Chalmers Corporation Kiln ring grinding apparatus
US4779384A (en) * 1986-02-13 1988-10-25 Harsco Corporation Rail grinder
US5441437A (en) * 1993-02-18 1995-08-15 Hulstedt; Bryan A. Compliant constant-force follower device for surface finishing tool
CN102426394A (en) * 2011-08-17 2012-04-25 公安部第一研究所 CT security inspection instrument delivery system
GB201417861D0 (en) * 2014-10-09 2014-11-26 Rolls Royce Plc Abrasive processing method
US10300574B2 (en) * 2014-10-24 2019-05-28 Velasa Sports, Inc. Skate blade sharpening system
IT201800007999A1 (en) * 2018-08-09 2020-02-09 Viet Italia Srl SANDING MACHINE FOR SANDING / SATIN FINISHING OF WOOD, METAL OR SIMILAR PANELS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168596A (en) * 1935-09-12 1939-08-08 Gardner Machine Co Control apparatus for grinding machines
US2333978A (en) * 1940-06-27 1943-11-09 Gen Electric Control system
US2648176A (en) * 1951-03-27 1953-08-11 Houdaille Hershey Corp Apparatus for polishing
US3271909A (en) * 1964-03-13 1966-09-13 Carborundum Co Grinding apparatus
US3415017A (en) * 1965-05-13 1968-12-10 Zech Murray Corp Apparatus for finishing workpieces under controlled pressures
US3394501A (en) * 1965-06-17 1968-07-30 Carborundum Co System for controlling grinding pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104440472A (en) * 2014-11-19 2015-03-25 德清德沃装饰材料有限公司 Roller type wood veneer sanding machine
CN105598796A (en) * 2016-03-17 2016-05-25 余晓娜 Wiredrawing, polishing and grinding system for metal plates

Also Published As

Publication number Publication date
DE1652010A1 (en) 1971-02-11
NO125308B (en) 1972-08-21
US3524285A (en) 1970-08-18
FR1533805A (en) 1968-07-19
SE328213B (en) 1970-09-07

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