GB1387113A - Speed control system for grinding machines - Google Patents

Speed control system for grinding machines

Info

Publication number
GB1387113A
GB1387113A GB4660570A GB4660570A GB1387113A GB 1387113 A GB1387113 A GB 1387113A GB 4660570 A GB4660570 A GB 4660570A GB 4660570 A GB4660570 A GB 4660570A GB 1387113 A GB1387113 A GB 1387113A
Authority
GB
United Kingdom
Prior art keywords
speed
signal
grinding wheel
workpiece
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
GB4660570A
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.)
Cranfield Institute of Technology
Original Assignee
Cranfield Institute of Technology
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 Cranfield Institute of Technology filed Critical Cranfield Institute of Technology
Priority to GB4660570A priority Critical patent/GB1387113A/en
Publication of GB1387113A publication Critical patent/GB1387113A/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
    • 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
    • B23Q15/08—Control or regulation of cutting velocity
    • B23Q15/10—Control or regulation of cutting velocity to maintain constant cutting velocity between tool and workpiece

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

1387113 Grinding CRANFIELD INSTITUTE OF TECHNOLOGY 29 March 1972 [30 March 1971] 46605/70 Heading B3D [Also in Division G3] The surface speed of a cam profile workpiece under a grinding wheel is kept constant by altering the angular velocity of the workpiece. The instantaneous shortest distance between the centre of the workpiece and the axis of the grinding wheel is sensed and the rate of change of this distance derived to give two signals which can be used to provide a desired angular velocity signal which is then used in a retroactive system to adjust the speed of the workpiece. In the embodiment shown the camshaft is mounted on a pivot and its position relative to the grinding wheel (controlled by a master cam and follower arrangement), is sensed by a potentiometer 9 provided in the pivot. The potentiometer output is fed to differentiating circuit 19 whose output is combined in circuit 17 with the position signal to provide a signal representative of a desired grinding speed which is used in oscillator 20 to provide a pulse train with a repetition rate proportional to the input signal. The speed of rotation of the camshaft is measured by the optical arrangement of a disc 12 having a radial grating which co-operates with transducers 13 to produce from logic 14 a pulse train whose repetition rate represents the speed of cam shaft 3. The pulse trains are compared in counter 15 and the resulting signal used to control the speed of motor 10. The desired mean speed is set using the manually adjustable controller 18. A velocity transducer may be used to determine the velocity in space of the contact point and thus replace differentiating circuit 19. In the case where the grinding wheel position alters, this movement is used to provide the distance signal.
GB4660570A 1971-03-30 1971-03-30 Speed control system for grinding machines Expired GB1387113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4660570A GB1387113A (en) 1971-03-30 1971-03-30 Speed control system for grinding machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4660570A GB1387113A (en) 1971-03-30 1971-03-30 Speed control system for grinding machines

Publications (1)

Publication Number Publication Date
GB1387113A true GB1387113A (en) 1975-03-12

Family

ID=10441908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4660570A Expired GB1387113A (en) 1971-03-30 1971-03-30 Speed control system for grinding machines

Country Status (1)

Country Link
GB (1) GB1387113A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102082A (en) * 1977-02-22 1978-07-25 Mitsubishi Jukogyo Kabushiki Kaisha Cam grinding apparatus with means to maintain the grinding speed constant
US4178720A (en) * 1977-01-27 1979-12-18 Nippon Kogaku K. K. Device for fabricating axially symmetric aspherics
US4197679A (en) * 1977-04-15 1980-04-15 Ito & Okamoto, Esq. Method for controlling the rotational speed of a rotary body
US4262454A (en) * 1978-06-20 1981-04-21 Toyoda-Koki Kabushiki-Kaisha Workpiece rotational speed controller for cam grinding machine
US4519167A (en) * 1982-01-20 1985-05-28 Saint-Gobain Vitrage Process and apparatus for the automatic control of movement of an edge grinding machine
US4528780A (en) * 1982-01-20 1985-07-16 Saint-Gobain Vitrage Process and apparatus for the control of position of a tool of an edge-processing machine for glass panes
US4648210A (en) * 1984-06-30 1987-03-10 Saint-Gobain Vitrage Apparatus for controlling position of grinding tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178720A (en) * 1977-01-27 1979-12-18 Nippon Kogaku K. K. Device for fabricating axially symmetric aspherics
US4102082A (en) * 1977-02-22 1978-07-25 Mitsubishi Jukogyo Kabushiki Kaisha Cam grinding apparatus with means to maintain the grinding speed constant
US4197679A (en) * 1977-04-15 1980-04-15 Ito & Okamoto, Esq. Method for controlling the rotational speed of a rotary body
US4262454A (en) * 1978-06-20 1981-04-21 Toyoda-Koki Kabushiki-Kaisha Workpiece rotational speed controller for cam grinding machine
US4519167A (en) * 1982-01-20 1985-05-28 Saint-Gobain Vitrage Process and apparatus for the automatic control of movement of an edge grinding machine
US4528780A (en) * 1982-01-20 1985-07-16 Saint-Gobain Vitrage Process and apparatus for the control of position of a tool of an edge-processing machine for glass panes
US4648210A (en) * 1984-06-30 1987-03-10 Saint-Gobain Vitrage Apparatus for controlling position of grinding tool

Similar Documents

Publication Publication Date Title
GB1319107A (en) Surface speed control of spindle-related numerical control system
GB1526487A (en) Velocity command signal generating apparatus
GB1502956A (en) Rotary wheel printing apparatus
GB1402019A (en) Apparatus for expressing writing fluid from a plotting pen
GB1387113A (en) Speed control system for grinding machines
GB1526253A (en) Apparatus for controlling a beam of radiant energy such as a measuring beam or a light beam in motor vehicles
GB1431451A (en) Apparatus for measuring the torque on a shaft
GB1400732A (en) Machine tool
GB1252640A (en)
GB1317167A (en) Method and apparatus for feed rate control of spindle-related
GB1382807A (en) Measuring and counting systems
ES332583A1 (en) Mechanism of control of the speed of a vehicle. (Machine-translation by Google Translate, not legally binding)
GB1276603A (en) Interferometer motion and velocity control
ES410846A1 (en) Method of and apparatus for producing a vehicle movement control signal in response to sensing the direction of travel of a vehicle
US3358201A (en) Apparatus for compensating machine feed driveservomechanisms
US3450865A (en) Methods and devices for generating a curve
US3300696A (en) Tracer control apparatus with means to correct position error
SU542637A1 (en) The method of editing shaped grinding wheel on a curve close to the arc of a circle
US2832894A (en) Automatic machine
GB1070839A (en) Improvements in or relating to apparatus for sensing or controlling the speed of a body
JPS57201163A (en) Disk abrasive device
GB1229373A (en)
GB1363114A (en) Lappling machine for the lapping of two meshing gear wheels
JPS55106702A (en) Face plate having tool position detecting device
GB1264434A (en)

Legal Events

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