GB1175992A - Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools. - Google Patents

Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools.

Info

Publication number
GB1175992A
GB1175992A GB991367A GB991367A GB1175992A GB 1175992 A GB1175992 A GB 1175992A GB 991367 A GB991367 A GB 991367A GB 991367 A GB991367 A GB 991367A GB 1175992 A GB1175992 A GB 1175992A
Authority
GB
United Kingdom
Prior art keywords
mark
stage
counter
turn
detected
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
GB991367A
Inventor
Rudolf Poppe
Claus Lieberwirth
Helmut Kessner
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.)
Steinmeyer Mechatronik GmbH
Original Assignee
Feinmess Dresden GmbH
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 Feinmess Dresden GmbH filed Critical Feinmess Dresden GmbH
Priority to GB991367A priority Critical patent/GB1175992A/en
Publication of GB1175992A publication Critical patent/GB1175992A/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
    • G05B19/27—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 absolute digital measuring device
    • G05B19/29—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 absolute digital measuring device for point-to-point control
    • G05B19/291—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 absolute digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • 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
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43194—Speed steps, switch over as function of position
    • 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
    • G05B2219/50047—Positioning, indexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

1,175,992. Digital positioning systems. FEINMESS DRESDEN VEB. 2 March, 1967, No. 9913/67. Heading G4H. [Also in Division G1]. A system for positioning a member comprises a mark carrier with a main mark and one or two pairs of auxiliary marks symmetrically arranged about the main mark, a photoelectric device to detect the presence of the marks in a given position and produce a corresponding pulse, a counter connected to receive the pulses and relays connected to the counter stages to reduce speed of the member when the auxiliary marks are detected and stop it when the main mark is detected. A machine tool turn-table is coarsely positioned by selectible limit switches and then finely positioned by a system according to the invention. The mark carrier 4, Fig. 2, carries a main mark and two auxiliary marks 9 and is viewed by a photoelectric head 13 which comprises two photocells 12 which are positioned so as to give a pulse at a predetermined position relative to the mark when the mark is approached from either direction. The output of the photocells 12 is connected to an OR gate 16 to give an output indicating the detection of a mark. The output pulse is fed to the first stage of a counter 17 and when the next mark is detected the corresponding pulse sets the second stage of the counter 18. When the first stage is set a relay 21 operates to reduce the speed of the turn-table and when the second stage sets a relay 22 stops the turn-table altogether. An extra pair of auxiliary marks may be provided so that the turn-table may be slowed down in stages.
GB991367A 1967-03-02 1967-03-02 Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools. Expired GB1175992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB991367A GB1175992A (en) 1967-03-02 1967-03-02 Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB991367A GB1175992A (en) 1967-03-02 1967-03-02 Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools.

Publications (1)

Publication Number Publication Date
GB1175992A true GB1175992A (en) 1970-01-01

Family

ID=9881099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB991367A Expired GB1175992A (en) 1967-03-02 1967-03-02 Improvements in or relating to Photoelectric Devices for the Automatic Positioning of Carriages or Turntables of Machine Tools.

Country Status (1)

Country Link
GB (1) GB1175992A (en)

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