GB1362819A - Automatic-control apparatus for machine tools - Google Patents

Automatic-control apparatus for machine tools

Info

Publication number
GB1362819A
GB1362819A GB5181471A GB5181471A GB1362819A GB 1362819 A GB1362819 A GB 1362819A GB 5181471 A GB5181471 A GB 5181471A GB 5181471 A GB5181471 A GB 5181471A GB 1362819 A GB1362819 A GB 1362819A
Authority
GB
United Kingdom
Prior art keywords
head
tool
rod
cycle
nov
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
GB5181471A
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of GB1362819A publication Critical patent/GB1362819A/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
    • 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
    • G05B19/40—Open loop systems, e.g. using stepping motor
    • 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
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35481—Display, panel
    • 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
    • G05B2219/37—Measurements
    • G05B2219/37416—By measuring phase shift between voltage and current of feedmotor
    • 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
    • G05B2219/41107—Coarse by hydraulic cylinder, fine by step motor superposed on piston
    • 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
    • G05B2219/43034—Form of profile, ramp, trapezoid, S-curve, exponential
    • 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
    • G05B2219/43139—VCO variable frequency oscillator or two oscilators with different frequency
    • 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
    • G05B2219/43152—Feed in, transfer line, rapid traverse to work, grip speed
    • 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
    • G05B2219/43186—Pulses from handle, knob, hand wheel control speed
    • 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
    • G05B2219/45—Nc applications
    • G05B2219/45159—Dressing, sharpening, trueing tool
    • 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
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49397—Control of dwell time
    • 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
    • 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
    • G05B2219/50048—Jogging
    • 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
    • G05B2219/50211—Finish machining, spark out, rough out

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Numerical Control (AREA)

Abstract

1362819 Gauging ING C OLIVETTI & C SpA 8 Nov 1971 [7 Nov 1970] 51814/71 Heading B3B [Also in Division H2] An automatic control apparatus for a machine tool, having a cutter-head or work-head movable by an electric step-by-step motor, comprises a pulse counter for the step pulses which is reset to zero in any predetermined resetting position of the head. As shown, a machine tool comprises a head 3, on which a tool (not shown) is mounted, slidable on a platform 12. A double-acting hydraulic cylinder 14 is mounted on the platform 12 so that by selective electrical operation of valves EV1, EV2 a piston 20 is displaced to rapidly move the head 3 by a rod 19. The motion of the rod 19 is transmitted to the head 3 through a micrometric adjustment device comprising a nut 16 co-operating with a screwed portion 18 of the shaft 19. The screw is displaced within the nut 16 by rotating the rod 19 through a spline, by gears 22, 24 from a reduction gear 25 driven by an electrical step-by-step motor 26. Alternatively, the gear 24 can be manually driven via a shaft 26. The sequenced energization of the valves EV1, EV2 and the forwards/backwards pulse rates to the motor 26 are determined by an electronic logic arrangement responsive to manual dimension setting devices and preset working cycles. The preset working cycles comprise (a) a setup cycle whereby the starting zero position is fixed from which subsequent cycles are begun; this is attained by bringing the tool into contact with the workpiece, (b) a machining cycle in which roughing and finishing cuts occur at differing speeds determined by logic selected pulse generators; upon completion of the machining cycle the tool is maintained in contact with the workpiece without a feed occurring for a predetermined period; and (c) a cutting-in-air cycle for rapid feed to a position outside the maximum tolerance on the diameter of a number of similar piece-parts. Facilities are also provided for tool regrinding and compensation of the starting zero-position for the consequent change in tool dimensions.
GB5181471A 1970-11-07 1971-11-08 Automatic-control apparatus for machine tools Expired GB1362819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7070370 1970-11-07

Publications (1)

Publication Number Publication Date
GB1362819A true GB1362819A (en) 1974-08-07

Family

ID=11314252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5181471A Expired GB1362819A (en) 1970-11-07 1971-11-08 Automatic-control apparatus for machine tools

Country Status (2)

Country Link
DE (1) DE2155337A1 (en)
GB (1) GB1362819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157988A (en) * 1984-04-04 1985-11-06 Citizen Watch Co Ltd Positioning system
AT400417B (en) * 1983-05-06 1995-12-27 Amada Co Ltd METHOD AND DEVICE FOR CONTROLLING THE CUTTING SPEED OF CUTTING MACHINES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT400417B (en) * 1983-05-06 1995-12-27 Amada Co Ltd METHOD AND DEVICE FOR CONTROLLING THE CUTTING SPEED OF CUTTING MACHINES
GB2157988A (en) * 1984-04-04 1985-11-06 Citizen Watch Co Ltd Positioning system

Also Published As

Publication number Publication date
DE2155337A1 (en) 1972-05-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee