GB1414437A – Torch height control for flame cutting machines
– Google Patents
GB1414437A – Torch height control for flame cutting machines
– Google Patents
Torch height control for flame cutting machines
Info
Publication number
GB1414437A
GB1414437A
GB5572273A
GB5572273A
GB1414437A
GB 1414437 A
GB1414437 A
GB 1414437A
GB 5572273 A
GB5572273 A
GB 5572273A
GB 5572273 A
GB5572273 A
GB 5572273A
GB 1414437 A
GB1414437 A
GB 1414437A
Authority
GB
United Kingdom
Prior art keywords
cutting
flame
torch
torches
potentiometer
Prior art date
1972-12-01
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
GB5572273A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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.)
1972-12-01
Filing date
1973-11-30
Publication date
1975-11-19
1973-11-30
Application filed by Caterpillar Tractor Co
filed
Critical
Caterpillar Tractor Co
1975-11-19
Publication of GB1414437A
publication
Critical
patent/GB1414437A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
B23K7/10—Auxiliary devices, e.g. for guiding or supporting the torch
B23K7/102—Auxiliary devices, e.g. for guiding or supporting the torch for controlling the spacial relationship between the workpieces and the gas torch
Abstract
1414437 Automatic control of position CATERPILLAR TRACTOR CO 30 Nov 1973 [1 Dec 1972] 55722/73 Heading G3R [Also in Division B3] The distance from a workpiece of a flame cutting torch is controlled in accordance with sensed variations in the effective resistance of the flame. As described, a series of cutting torches 12A, 12B are moved parallel to respective workpieces 13A, 13B in response to signals from a template scanner (21), Fig. 1 (not shown). The vertical positions of the torches are controlled by servomotors (23A, 23B) connected to respective control circuits (51A, 51B) and a master regulating circuit 53. Each cutting flame 14 is connected in series with a fixed resistor 61 across a regulated D.C. voltage supplied by circuit 53, and the junction point of the resistor 61 and the torch 12A is connected to a summing junction 68 along with a reference voltage from circuit 53 and an individual bias voltage from a potentiometer 73. The junction 68 is connected to one input of an operational amplifier 77 producing an output signal, limited by Zener diode 82, for energizing either one of two relay coils 87, 89 causing the torch to be driven down or up respectively. Any discontinuity in the workpiece causes a high output from amplifier 77 which breaks down Zener diode 91 turning on a warning light-emitting diode 98 and a transistor 94 which earths the amplifier output, thus preventing torch drive. Individual torches can be driven manually using a switch 103, and all torches can be driven simultaneously be operating a switch 99. In use, an initial high pre-heat stage using propane and low pressure oxygen supplies, Fig. 1 (not shown), is followed by a normal pre-heat stage with reduced propane and oxygen flow. For actual cutting, high pressure oxygen is also supplied to make the flame hotter. Different reference voltages for the pre-heat and cutting stages are provided by the master height regulating circuit 53, the action of turning on the high-pressure oxygen supply also switching contacts 69, 72 so that a potentiometer 67 provides the reference in place of potentiometer 66.
GB5572273A
1972-12-01
1973-11-30
Torch height control for flame cutting machines
Expired
GB1414437A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US00311330A
US3823928A
(en)
1972-12-01
1972-12-01
Torch height control for flame cutting machines
Publications (1)
Publication Number
Publication Date
GB1414437A
true
GB1414437A
(en)
1975-11-19
Family
ID=23206410
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5572273A
Expired
GB1414437A
(en)
1972-12-01
1973-11-30
Torch height control for flame cutting machines
Country Status (5)
Country
Link
US
(1)
US3823928A
(en)
JP
(1)
JPS596742B2
(en)
BE
(1)
BE807964A
(en)
FR
(1)
FR2211321B1
(en)
GB
(1)
GB1414437A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0199937A1
(en)
*
1985-04-02
1986-11-05
Messer Griesheim Gmbh
Method of automatically controlling the starting height of a burner
EP0268803A1
(en)
*
1986-11-06
1988-06-01
Messer Griesheim Gmbh
Cross carriage-oxygen cutting machine
EP0306688A1
(en)
*
1987-09-10
1989-03-15
Cleveland Machine Controls, Inc.
Device for controlling the working gap of a torch, and method for its use
US4854551A
(en)
*
1987-09-10
1989-08-08
Cleveland Machine Controls, Inc.
Device for controlling operating gap of cutting head and method of using same
Families Citing this family (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5142051A
(en)
*
1974-10-09
1976-04-09
Chiyoda Seiki Kk
GASUSETSUDANKINIOKERU YODANKAISHIHOHO
US4147333A
(en)
*
1977-04-26
1979-04-03
Heath Engineering Company
Programmed pressure regulator for controlling the supply of gas pressure to a load device
US4328049A
(en)
*
1979-03-20
1982-05-04
Caterpillar Tractor Co.
Torch height sensing apparatus
JPS6051948B2
(en)
*
1979-03-20
1985-11-16
キヤタピラ− トラツクタ− カンパニイ
Torch height detection device and detection method
WO1980002002A1
(en)
*
1979-03-20
1980-10-02
Caterpillar Tractor Co
Cutting torch height control apparatus
KR100307584B1
(en)
*
1998-02-27
2001-12-12
윤종용
Apparatus for supplying ink for liquid electrographic printer
US6379214B1
(en)
1999-08-25
2002-04-30
Flow International Corporation
Apparatus and methods for z-axis control and collision detection and recovery for waterjet cutting systems
US6540586B2
(en)
1999-08-25
2003-04-01
Flow International Corporation
Apparatus and methods for collision detection and recovery for waterjet cutting systems
EP2969345B1
(en)
*
2013-03-15
2021-10-20
The Esab Group, Inc.
Process parameter detection using flame electrical characteristics in oxy-fuel thermal processing
US11684989B2
(en)
*
2021-07-06
2023-06-27
Iht Automation Gmbh & Co. Kg
Method for monitoring a flame cutting process
Family Cites Families (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2364645A
(en)
*
1942-03-31
1944-12-12
Nat Cylinder Gas Co
Torch device
US3054924A
(en)
*
1958-03-28
1962-09-18
Siemens Ag
Position control apparatus
US2949391A
(en)
*
1958-04-30
1960-08-16
Air Reduction
Method and apparatus for automatic torch positioning
US3233076A
(en)
*
1964-09-21
1966-02-01
Welding Research Inc
Welding control system
GB1093816A
(en)
*
1964-11-13
1967-12-06
Hancock And Co Engineering Ltd
Automatic burner height control circuit
US3596892A
(en)
*
1968-12-13
1971-08-03
Tanaka Seisakusho Kk
Automatic gas cutting device
US3746326A
(en)
*
1971-07-22
1973-07-17
Cro Eng Co Inc
Flame cutting torch control
1972
1972-12-01
US
US00311330A
patent/US3823928A/en
not_active
Expired – Lifetime
1973
1973-11-29
BE
BE138298A
patent/BE807964A/en
not_active
IP Right Cessation
1973-11-30
FR
FR7342871A
patent/FR2211321B1/fr
not_active
Expired
1973-11-30
GB
GB5572273A
patent/GB1414437A/en
not_active
Expired
1973-12-01
JP
JP48136429A
patent/JPS596742B2/en
not_active
Expired
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0199937A1
(en)
*
1985-04-02
1986-11-05
Messer Griesheim Gmbh
Method of automatically controlling the starting height of a burner
EP0268803A1
(en)
*
1986-11-06
1988-06-01
Messer Griesheim Gmbh
Cross carriage-oxygen cutting machine
EP0306688A1
(en)
*
1987-09-10
1989-03-15
Cleveland Machine Controls, Inc.
Device for controlling the working gap of a torch, and method for its use
US4854551A
(en)
*
1987-09-10
1989-08-08
Cleveland Machine Controls, Inc.
Device for controlling operating gap of cutting head and method of using same
Also Published As
Publication number
Publication date
FR2211321B1
(en)
1980-03-28
JPS4996952A
(en)
1974-09-13
JPS596742B2
(en)
1984-02-14
FR2211321A1
(en)
1974-07-19
BE807964A
(en)
1974-05-29
US3823928A
(en)
1974-07-16
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Legal Events
Date
Code
Title
Description
1976-03-31
PS
Patent sealed [section 19, patents act 1949]
1986-08-06
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1988-07-20
PCNP
Patent ceased through non-payment of renewal fee
