GB898946A - An electromagnetic following device - Google Patents

An electromagnetic following device

Info

Publication number
GB898946A
GB898946A GB3811358A GB3811358A GB898946A GB 898946 A GB898946 A GB 898946A GB 3811358 A GB3811358 A GB 3811358A GB 3811358 A GB3811358 A GB 3811358A GB 898946 A GB898946 A GB 898946A
Authority
GB
United Kingdom
Prior art keywords
pulses
control
phase
undisclosed
coil
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
GB3811358A
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.)
VYSKUMNY USTAV PRE MECHANIZACI
Original Assignee
VYSKUMNY USTAV PRE MECHANIZACI
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 VYSKUMNY USTAV PRE MECHANIZACI filed Critical VYSKUMNY USTAV PRE MECHANIZACI
Publication of GB898946A publication Critical patent/GB898946A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
    • B23H7/20—Electric circuits specially adapted therefor, e.g. power supply for programme-control, e.g. adaptive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/002—Machines, apparatus, or equipment for cutting plane workpieces, e.g. plates
    • B23K7/004—Seam tracking
    • 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/12—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means
    • 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/12—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means
    • B23Q35/127—Means for transforming movement of the feeler or the like into feed movement of tool or work involving electrical means using non-mechanical sensing
    • B23Q35/128—Sensing by using optical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Laser Beam Processing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Machine Tool Copy Controls (AREA)
  • Control Of Linear Motors (AREA)

Abstract

898,946. Electric copying machines. VYSKUMNY USTAV PRE MECHANIZACIU A AUTOMATIZACIU. Nov. 26, 1958 [April 25, 1958], No. 38113/58. Class 38 (6). [Also in Group XXXVI] An electro-erosive cutter is automatically guided to cut a predetermined profile by signals from a photo-cell which is scanning a drawing, and the speed of movement is controlled in accordance with the magnitude of the erosion current. An undisclosed photo-electric scanner is said to produce two sets of pulses 15, 19, phase modulated in accordance with deviations from the drawing. The pulses are applied to the grids of a double triode 11 forming a cathode follower with two inputs and a common output. The triodes are, in an undisclosed manner, biased to cut-off; but this bias is opposed by two voltages applied at 23, 24 and derived from an undisclosed source which is responsive to the magnitude of the erosion current. The output of the valve 11 thus consists of pulses modulated in phase for directional control and in amplitude for speed control. The pulses are given a sinusoidal shape by a tuned circuit 33, and are applied via a power amplifier 27 to two electromechanical discriminators 28, 29 which control hydraulic servomotors for the X and Y axis movements of the cutter. The discriminators (see Group XXXVI) consist of an E-shaped iron core carrying a coil excited from an A.C. reference source of the same frequency as the repetition frequency of the control pulses, and a coil carrying the control pulses moving axially within the air gap of the core. The axial displacement of the moving coil is thus proportional to the phase and amplitude of the pulse signal relative to the reference. By energizing the two reference coils 90 degrees out of phase, the control signals can be resolved along the X and Y axes. Reference has been directed by the Comptroller to Specification 824,001.
GB3811358A 1958-04-25 1958-11-26 An electromagnetic following device Expired GB898946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS223558 1958-04-25

Publications (1)

Publication Number Publication Date
GB898946A true GB898946A (en) 1962-06-14

Family

ID=5358879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3811358A Expired GB898946A (en) 1958-04-25 1958-11-26 An electromagnetic following device

Country Status (6)

Country Link
BE (1) BE573606A (en)
CH (1) CH368539A (en)
DE (1) DE1081112B (en)
FR (1) FR1220847A (en)
GB (1) GB898946A (en)
NL (1) NL106011C (en)

Also Published As

Publication number Publication date
CH368539A (en) 1963-04-15
NL106011C (en) 1963-09-16
FR1220847A (en) 1960-05-27
DE1081112B (en) 1960-05-05
BE573606A (en) 1959-04-01

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