GB1412208A - Machine tool eg spark erosion machine having means for controlling the positioning of the workpiece carrier thereof - Google Patents

Machine tool eg spark erosion machine having means for controlling the positioning of the workpiece carrier thereof

Info

Publication number
GB1412208A
GB1412208A GB1410073A GB1410073A GB1412208A GB 1412208 A GB1412208 A GB 1412208A GB 1410073 A GB1410073 A GB 1410073A GB 1410073 A GB1410073 A GB 1410073A GB 1412208 A GB1412208 A GB 1412208A
Authority
GB
United Kingdom
Prior art keywords
tool
signal
control device
count
motor
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
GB1410073A
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.)
AKO Werke GmbH and Co KG
SMS Elotherm GmbH
Original Assignee
AEG Elotherm GmbH
AKO Werke GmbH and Co KG
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 AEG Elotherm GmbH, AKO Werke GmbH and Co KG filed Critical AEG Elotherm GmbH
Publication of GB1412208A publication Critical patent/GB1412208A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/23—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
    • 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
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41081—Approach position from same direction
    • 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
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41091—Alignment, zeroing, nulling, set parallel to axis
    • 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
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50031—Zero setting, go to reference with gauge

Abstract

1412208 Automatic control of machine tools AEG-ELOTHERM GmbH and AKO-WERKE GmbH 23 March 1973 [30 March 1972] 14100/73 Heading G3N [Also in Division B3] In a machine tool the position of a workpiece 6 on work-table 5 relative to a tool 4, e.g. a drill or an electrode is a spark erosion machine, is controllable in that the table is fed in a "positive" direction 25 normal to the tool feed path 9 by a servomotor 11 and feed screw 10 until a flat reference surface 27 on the workpiece contacts the tool to complete an electrical circuit including a D.C. source 16 and a signal passes along line 26 to a control device 15 whence it is transmitted to a servo unit 13 to stop the motor 11. The tool is now in the X-co-ordinate "setting-up" position 4' Fig. 2. A signal from the control device passes through line 28, direct control means 7 and feed unit 8 and retracts the tool and a signal is applied to input 29 to pre-set a pulse counter 21 to a count corresponding to the distance between the setting- up position and a desired reference position. A further starting signal to the control device causes unit 13 to again operate motor 11 in the positive direction 25 and pulses generated by device 12 linked to the feed screw cause pulse counter 21 to count-down from its pre-set value. The traverse may be rapid at first then reduced in speed when the count-down reaches a given figure at which the counter 21 generates an appropriate signal. When the count reaches zero it generates another signal to stop the motor 11. The tool is now in reference position 4 . This may be repeated for the Y- co-ordinate. Any desired working position may now be reached from this reference position by setting the particular pulse counters in the conventional manner. In order to exclude the effects of backlash in the feed screw a subsidiary circuit 30 Fig. 3 in the control device 15 may be provided and includes an erasable store 31, a comparator 33, a pair of bi-stable multi-vibrators 35, 42 and an AND-gate, which ensures that on returning to the reference position in the negative direction the motor 11 is reversed and changed to creep speed as the worktable passes the position and the table stops at that position while traversing in the positive direction.
GB1410073A 1972-03-30 1973-03-23 Machine tool eg spark erosion machine having means for controlling the positioning of the workpiece carrier thereof Expired GB1412208A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722215569 DE2215569A1 (en) 1972-03-30 1972-03-30 POSITIONING CONTROL FOR THE WORKPIECE CARRIER ON MACHINE TOOLS AS WELL AS MACHINE TOOL EQUIPPED WITH THIS POSITIONING CONTROLLER

Publications (1)

Publication Number Publication Date
GB1412208A true GB1412208A (en) 1975-10-29

Family

ID=5840643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1410073A Expired GB1412208A (en) 1972-03-30 1973-03-23 Machine tool eg spark erosion machine having means for controlling the positioning of the workpiece carrier thereof

Country Status (3)

Country Link
DE (1) DE2215569A1 (en)
FR (1) FR2178161B1 (en)
GB (1) GB1412208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675490A (en) * 1981-06-25 1987-06-23 Fanuc Limited Method and apparatus for controlling electrode position in an electric discharge machine by counting feedback pulses and repeatedly adding the count

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404485C3 (en) * 1974-01-31 1981-09-24 Trumpf Maschinen AG, Zug Electrical control device for the step-by-step automatic feed of the workpiece carrier of a nibbling machine or the like.
DE2508968C2 (en) * 1975-03-01 1986-09-04 Robert Bosch Gmbh, 7000 Stuttgart Numerically controlled handling system
US4213733A (en) * 1976-09-07 1980-07-22 Houdaille Industries, Inc. Automatic side gauge for machine tool workpiece control and method
DE2906135C2 (en) * 1979-02-17 1985-07-11 Olympia Werke Ag, 2940 Wilhelmshaven Printing unit for the production of a typeface with even character spacing
JPS5776607A (en) * 1980-10-30 1982-05-13 Fanuc Ltd Numeric control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675490A (en) * 1981-06-25 1987-06-23 Fanuc Limited Method and apparatus for controlling electrode position in an electric discharge machine by counting feedback pulses and repeatedly adding the count

Also Published As

Publication number Publication date
FR2178161B1 (en) 1977-12-30
DE2215569A1 (en) 1973-10-11
FR2178161A1 (en) 1973-11-09

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees