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GB1450078A - Method of and a device for reducing the influence of backlash in the drive of a machine tool - Google Patents

Method of and a device for reducing the influence of backlash in the drive of a machine tool

Info

Publication number
GB1450078A
GB1450078A GB6029573A GB6029573A GB1450078A GB 1450078 A GB1450078 A GB 1450078A GB 6029573 A GB6029573 A GB 6029573A GB 6029573 A GB6029573 A GB 6029573A GB 1450078 A GB1450078 A GB 1450078A
Authority
GB
United Kingdom
Prior art keywords
speed
motors
motor
machine tool
torque
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
GB6029573A
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.)
LUCHERINI G
Original Assignee
LUCHERINI G
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 LUCHERINI G filed Critical LUCHERINI G
Publication of GB1450078A publication Critical patent/GB1450078A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/68—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more DC dynamo-electric motors
    • H02P5/69—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more DC dynamo-electric motors mechanically coupled by gearing
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing backlash

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1450078 Automatic control of speed G LUCHERINI 31 Dec 1973 [29 Dec 1972] 60295/73 Heading G3R In a system wherein a machine tool is driven by two motors each with a feedback speed control using a tachometric dynamo. When the detected torque on one motor approaches zero, speed control of both motors is maintained using the dynamo associated with the other motor. Each speed feedback includes a bias so that the two motors do not approach zero torque simultaneously, and the system is said to eliminate backlash in the machine tool drive. As shown, motors 1, 2 with stabilized field currents, have associated dynamos 6, 7 and circuits 15, 16 that calculate the torque on each motor from the sensed motor speed and armature current. A bi-stable circuit 14 switches the speed control to one dynamo when the calculated torque on the other motor approaches zero. The output of the bi-stable switch is compared with a speed reference 19 to control the armature currents in the motors using amplifier 12.
GB6029573A 1972-12-29 1973-12-31 Method of and a device for reducing the influence of backlash in the drive of a machine tool Expired GB1450078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7112372A IT976217B (en) 1972-12-29 1972-12-29 PROCEDURE AND DEVICE TO ELIMINATE THE INFLUENCE OF GAMES IN THE CONTROL OF THE AXES OF THE MACHINE TOOLS

Publications (1)

Publication Number Publication Date
GB1450078A true GB1450078A (en) 1976-09-22

Family

ID=11314658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6029573A Expired GB1450078A (en) 1972-12-29 1973-12-31 Method of and a device for reducing the influence of backlash in the drive of a machine tool

Country Status (4)

Country Link
DE (1) DE2345711A1 (en)
FR (1) FR2212215B1 (en)
GB (1) GB1450078A (en)
IT (1) IT976217B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027702A1 (en) * 1979-10-18 1981-04-29 John Stephen Nitschke Conveyor drive system for a glass sheet manufacturing system
EP1270143A1 (en) * 2001-06-22 2003-01-02 Kitamura Machinery Co., Ltd. NC machine tool with means for preventing backlash in the rack and pinion drive mechanisms

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2043251B1 (en) * 2007-09-27 2010-05-19 Baumüller Nürnberg Gmbh Regulated electric motor assembly for a tensing mechanism
DE102015122638A1 (en) * 2015-12-22 2017-06-22 Schneider Electric Industries Sas Electric motor drive and method for operating an engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434025A (en) * 1966-08-23 1969-03-18 Northern Electric Co Drive system employing dual motors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027702A1 (en) * 1979-10-18 1981-04-29 John Stephen Nitschke Conveyor drive system for a glass sheet manufacturing system
EP1270143A1 (en) * 2001-06-22 2003-01-02 Kitamura Machinery Co., Ltd. NC machine tool with means for preventing backlash in the rack and pinion drive mechanisms

Also Published As

Publication number Publication date
FR2212215A1 (en) 1974-07-26
FR2212215B1 (en) 1978-03-24
IT976217B (en) 1974-08-20
DE2345711A1 (en) 1974-07-04

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Legal Events

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