GB1402893A - Machine tool control devices - Google Patents

Machine tool control devices

Info

Publication number
GB1402893A
GB1402893A GB3465672A GB3465672A GB1402893A GB 1402893 A GB1402893 A GB 1402893A GB 3465672 A GB3465672 A GB 3465672A GB 3465672 A GB3465672 A GB 3465672A GB 1402893 A GB1402893 A GB 1402893A
Authority
GB
United Kingdom
Prior art keywords
circuit
mean value
measured
machine tool
mean
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
GB3465672A
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.)
POSSATI M APPARECCHI ELETTRONI
Original Assignee
POSSATI M APPARECCHI ELETTRONI
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 POSSATI M APPARECCHI ELETTRONI filed Critical POSSATI M APPARECCHI ELETTRONI
Publication of GB1402893A publication Critical patent/GB1402893A/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
    • B23Q15/013—Control or regulation of feed movement
    • B23Q15/04—Control or regulation of feed movement according to the final size of the previously-machined workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
    • 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
    • G05B2219/37345—Dimension of workpiece, diameter
    • 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
    • G05B2219/37525—Mean, average values, statistical derived values
    • 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
    • G05B2219/37536—Rate of change, derivative
    • 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
    • G05B2219/37576—Post-process, measure worpiece after machining, use results for new or same
    • 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
    • G05B2219/37614—Number of workpieces, counter
    • 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
    • G05B2219/50182—Skip over pieces between machining and measuring station, on tool changing
    • 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
    • G05B2219/50276—Detect wear or defect tool, breakage and change 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
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50307—Correction by probing dimension of machined workpiece

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

1402893 Automatic control of size M POSSATI [trading as APPARECCHI ELETTRONICI MARPOSS] 25 July 1972 [30 July 1971 (2)] 34656/72 Heading G3R To produce workpieces with dimensions with pre-set limits, a machine tool is adjusted according to the mean value of the measured dimensions, the mean value being updated for each machined workpiece. As shown, circuit 19 receives signals from measuring head 12 dependent upon the maximum size of bearing rings 11 from a grinding machine, circuit 19 calculating the mean value. Using this value, the derivative of the mean and the number of workpieces between the machine tool and the measuring head, the actual size of the ring being machined is calculated and kept within pre-set limits. Circuit 24 compares the measured and mean values, and provides an indication if the tool has to be changed or dressed. After such a tool change or dressing, counter 34 blocks the signals from head 12 to circuits 19, 24 until a pre-set number of rings have been measured i.e. to allow for the distance between the machining and measuring points. The system response may be increased by adjusting circuit components. In circuits 19, 24 (also Fig. 3 not shown) which include operational amplifier, the mean value is obtained by charging a capacitor (49) through a FET (52) made conductive for each measurement by a monostable circuit (53).
GB3465672A 1971-07-30 1972-07-25 Machine tool control devices Expired GB1402893A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT348771 1971-07-30
IT349071 1971-07-30

Publications (1)

Publication Number Publication Date
GB1402893A true GB1402893A (en) 1975-08-13

Family

ID=26325409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3465672A Expired GB1402893A (en) 1971-07-30 1972-07-25 Machine tool control devices

Country Status (6)

Country Link
JP (1) JPS4970280A (en)
CH (1) CH556714A (en)
DE (1) DE2237052C2 (en)
FR (1) FR2148021B1 (en)
GB (1) GB1402893A (en)
SE (1) SE397288B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665481A2 (en) * 1994-01-31 1995-08-02 Toyota Jidosha Kabushiki Kaisha Apparatus and method for feedback adjusting machine working condition for improving dimensional accuracy of processed workpieces
WO2005119383A2 (en) * 2004-06-04 2005-12-15 Marposs Societa' Per Azioni Method and apparatus for controlling the machining of mechanical pieces

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914678A (en) * 1973-05-16 1975-10-21 Cross Co Control system for compensating for cutting machine tool wear
JPS5244668B2 (en) * 1973-09-08 1977-11-09
CH598573A5 (en) * 1975-09-01 1978-04-28 Greiner Electronic Ag
IT1070157B (en) * 1976-05-05 1985-03-29 Finike Italiana Marposs MEASUREMENT AND CONTROL EQUIPMENT FOR INTERNAL GRINDING MACHINES
DE3013378C2 (en) * 1980-04-05 1984-12-20 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Device for the adaptive control of machining processes on grinding machines, in particular on cylindrical grinding machines
DE3345936A1 (en) * 1983-12-20 1985-06-27 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf MEASURING METHOD FOR TESTING TWO-SIDED TURNED PARTS AND DEVICE FOR CARRYING OUT THE MEASURING METHOD

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT276794B (en) * 1966-09-01 1969-12-10 Heid Ag Maschf Measurement control for the production of workpieces with the same dimensions within a tolerance range

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665481A2 (en) * 1994-01-31 1995-08-02 Toyota Jidosha Kabushiki Kaisha Apparatus and method for feedback adjusting machine working condition for improving dimensional accuracy of processed workpieces
EP0665481A3 (en) * 1994-01-31 1998-05-20 Toyota Jidosha Kabushiki Kaisha Apparatus and method for feedback adjusting machine working condition for improving dimensional accuracy of processed workpieces
WO2005119383A2 (en) * 2004-06-04 2005-12-15 Marposs Societa' Per Azioni Method and apparatus for controlling the machining of mechanical pieces
WO2005119383A3 (en) * 2004-06-04 2006-03-16 Marposs Spa Method and apparatus for controlling the machining of mechanical pieces
US7437263B2 (en) 2004-06-04 2008-10-14 Marposs Societa′ per Azioni Method and apparatus for controlling the machining of mechanical pieces

Also Published As

Publication number Publication date
DE2237052A1 (en) 1973-02-08
FR2148021A1 (en) 1973-03-11
SE397288B (en) 1977-10-31
DE2237052C2 (en) 1983-01-05
CH556714A (en) 1974-12-13
JPS4970280A (en) 1974-07-08
FR2148021B1 (en) 1974-07-26

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Legal Events

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