GB1381147A – Method of and apparatus for friction welding
– Google Patents
GB1381147A – Method of and apparatus for friction welding
– Google Patents
Method of and apparatus for friction welding
Info
Publication number
GB1381147A
GB1381147A
GB2293472A
GB2293472A
GB1381147A
GB 1381147 A
GB1381147 A
GB 1381147A
GB 2293472 A
GB2293472 A
GB 2293472A
GB 2293472 A
GB2293472 A
GB 2293472A
GB 1381147 A
GB1381147 A
GB 1381147A
Authority
GB
United Kingdom
Prior art keywords
workpieces
heads
spindle
burn
workpiece
Prior art date
1972-05-16
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
GB2293472A
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.)
Clarke Chapman Group Ltd
Original Assignee
Clarke Chapman Group Ltd
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.)
1972-05-16
Filing date
1972-05-16
Publication date
1975-01-22
1972-05-16
Application filed by Clarke Chapman Group Ltd
filed
Critical
Clarke Chapman Group Ltd
1972-05-16
Priority to GB2293472A
priority
Critical
patent/GB1381147A/en
1975-01-22
Publication of GB1381147A
publication
Critical
patent/GB1381147A/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
B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
Abstract
1381147 Welding by pressure CLARKE CHAPMAN Ltd 4 April 1973 [16 May 1972] 22934/72 Heading B3R In friction welding first and second outer workpieces to an intermediate workpiece the completion of predetermined minimum amounts of burn-off is determined by initiating, in response to the contacting of the intermediate. workpiece by both outer workpieces, two relative movements, one being between a first operator member and first mechanism which is operable in response to a predetermined amount of said one relative movement, the other being between a second operator member and second mechanism which is operable in response to a predetermined amount of said other relative movement, the relative movements being indicative, respectively, of the burn-off produced by rubbing between the first and intermediate workpieces and between the second and intermediate workpieces and by deriving from the operation of the mechanisms indication of completion of the predetermined amounts of burn-off. In an embodiment a double-ended friction welding machine comprises opposed heads 10, 12 which may be advanced towards one another by hydraulic rams and which carry power driven chucks for holding the two outer workpieces. The intermediate workpiece is held non- rotatably but free for axial movement between the heads 10, 12. On the head 10 a microswitch 14 is mounted having an operating plunger carrying a roller 18 and slidable in a bracket on the head is a spindle 26 having a cam face 42 for engaging the roller 18. A spring 46 is arranged between the spindle and the bracket. A similar microswitch 16, spindle 28 and spring 48 are provided on the head 12. The heads 10, 12 are slidable on a base 49, Fig. 2, on which is mounted a clamp mechanism comprising a body 50 supporting an hydraulic piston and cylinder 52 operable to move a clamp plate 54 towards or away from the body 50. Two rods 56, 58 are slidable in the body 50 against springs 60, 62 and can be clamped by the plate 54. An end 38 on spindle 26 engages a striker head 64 on the rod 56 and an end 40 on the spindle 28 engages a striker head 66 on the rod 58. In operation workpieces are secured in the heads 10, 12 and an intermediate workpiece is positioned between them. The heads 10, 12 are moved together while their workpieces are rotated and the spindle end 38 will push the rod 56 to the right, the spring 26 being stronger than the spring 60 and the spindle end 40 will push the rod 58 to the left. When the outer workpieces both abut the intermediate workpiece a rise in the pressure of the hydraulic system operating the rams causes the piston and cylinder device 52 to clamp the rods 56, 58 against the body 50. Further movement together of the heads causes burn off and movement of the heads relatively to the spindles 26, 28 occurs for a predetermined distance until the plungers of the microswitches are operated by the cam faces 42, 44 to light pilot lights. The ram pressure is then increased and rotation of the outer workpiece is stopped. After welding the parts return to their initial positions, micro switches possibly monitoring the return of the spindles 26, 28 and rods 56, 58 to their start positions. In a modification a timer could be started when all three workpieces abut so that if a predetermined time has not elapsed before the minimum burn-off movements have been indicated the welds are rejected as faulty.
GB2293472A
1972-05-16
1972-05-16
Method of and apparatus for friction welding
Expired
GB1381147A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB2293472A
GB1381147A
(en)
1972-05-16
1972-05-16
Method of and apparatus for friction welding
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB2293472A
GB1381147A
(en)
1972-05-16
1972-05-16
Method of and apparatus for friction welding
Publications (1)
Publication Number
Publication Date
GB1381147A
true
GB1381147A
(en)
1975-01-22
Family
ID=10187432
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2293472A
Expired
GB1381147A
(en)
1972-05-16
1972-05-16
Method of and apparatus for friction welding
Country Status (1)
Country
Link
GB
(1)
GB1381147A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO1995021040A2
(en)
*
1994-02-04
1995-08-10
The Safe Seal Company, Inc.
Friction welding apparatus
1972
1972-05-16
GB
GB2293472A
patent/GB1381147A/en
not_active
Expired
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO1995021040A2
(en)
*
1994-02-04
1995-08-10
The Safe Seal Company, Inc.
Friction welding apparatus
WO1995021040A3
(en)
*
1994-02-04
1995-10-26
Safe Seal Company Inc
Friction welding apparatus
US5558265A
(en)
*
1994-02-04
1996-09-24
The Safe Seal Company, Inc.
Friction welding apparatus
US5735447A
(en)
*
1994-02-04
1998-04-07
The Safe Seal Company, Inc.
Friction welding apparatus
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Legal Events
Date
Code
Title
Description
1975-06-04
PS
Patent sealed
1979-05-16
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1980-11-12
PCNP
Patent ceased through non-payment of renewal fee
