EP0133952A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Manually operated tool for flaring tubes
Assignee: Rothenberger & Co Werkzeuge-Maschinen KG GmbH
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Filing: 1984-07-25
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Granted: —
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Expires: 2004-07-25
Abstract
Abstract A flaring or swaging tool system having a main body (10) in which a threaded shaft (54) includes a die-supporting end (64) terminating in a head portion (65) and having a circumferential groove (66) adjacent the head portion (65), the head portion having a lower bearing surface (68), and a plurality of dies (12, 12A, 12B, 12C, 12D, 12E, 12F, 12G) each die having a recess (80, 80F) sized to receive the head portion therein and having a mating bearing surface (90, 90G, 90F) which abuts the bearing surface (68) of the head portion (65) to transmit therethrough the compressive forces generated during a forming operation. In a preferred embodiment, the recess (80) includes a pair of opposing shoulders (82, 84) located opposite a swaging surface (72, 72A, 72B, 72D, 72E) of the die and forming a slot (88) therebetween for slidably receiving the groove (66) such that the die may be retained on the die supporting end (64) of the shaft (54) by engagement of the head portion (65) with the shoulders (82, 84). The main body (10) is of the type having a pair of clamping members (14, 16) for grasping a workpiece (94, 94A, 94B, 94D, 94E) therebetween and a strap member (42) spaced from the clamping members; the shaft (54) is threaded into the strap member (42) for movement outward and away from the clamping members (14, 16). In an alternate embodiment, each die (12G) includes a cam spring (118) and pin (122) which can be actuated to lock the die (12G) on the shaft (54). The tool system also includes dies (12A, 12B) for performing a double-flaring operation and gauges (97, 98C) for determining the proper positioning of a tubular workpiece (94E) to the main body (10).
Inventors
- 👤 Wayne B. Wolcott
- 👤 Howard R. Otto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:59
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/16; B21D41/00; B21D41/02; B21D41/021
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
228 words
A tool system of the type having a main body (10) with a pair of clamping members (14, 16) for grasping a workpiece (94, 94A, 94B, 94E) therebetween, a strap member (42) spaced from said clamping members (14, 16), a shaft (54) threaded into said strap member (42) for movement toward and away from said clamping members (14, 16) and having a die-supporting end (64) adjacent said clamping members (14, 16), and a plurality of dies (12, 12A, 12B, 12C, 12D, 12E, 12E, 12G), each of said dies having a working surface (72, 72A, 72B, 72D, 72E) for forming a workpiece grasped by said clamping members upon movement of said shaft (54) toward said clamping members, the improvements comprising: - said die-supporting end (64) terminating in a connection portion with a bearing surface (68) facing said clamping members (14, 16); - each of said dies (12, 12A, 12B, 12C, 12D, 12E, 12F, 12G) having a member mating said connection portion therein; - a circumferential groove (66) in either the connection portion or the member mating the connection portion; - and including means (82, 84; 122) for engaging said groove (66) and thereby retaining said die at said die-supporting end (64); and - said die having a mating bearing surface (90, 90G, 90F) positioned to abut said bearing surface (68) of said connection portion (65) under a compressive force.
Claim 2
Dependent Claim
228 words
A tool system of the type having a main body (10) with a pair of clamping members (14, 16) for grasping a workpiece (94, 94A, 94B, 94E) therebetween, a strap member (42) spaced from said clamping members (14, 16), a shaft (54) threaded into said strap member (42) for movement toward and away from said clamping members (14, 16) and having a die-supporting end (64) adjacent said clamping members (14, 16), and a plurality of dies (12, 12A, 12B, 12C, 12D, 12E, 12E, 12G), each of said dies having a working surface (72, 72A, 72B, 72D, 72E) for forming a workpiece grasped by said clamping members upon movement of said shaft (54) toward said clamping members, the improvements comprising: - said die-supporting end (64) terminating in a connection portion with a bearing surface (68) facing said clamping members (14, 16); - each of said dies (12, 12A, 12B, 12C, 12D, 12E, 12F, 12G) having a member mating said connection portion therein; - a circumferential groove (66) in either the connection portion or the member mating the connection portion; - and including means (82, 84; 122) for engaging said groove (66) and thereby retaining said die at said die-supporting end (64); and - said die having a mating bearing surface (90, 90G, 90F) positioned to abut said bearing surface (68) of said connection portion (65) under a compressive force.
Claim 3
Dependent Claim
170 words
A tool system of claim 1, wherein said die-supporting end (64) terminating in a head portion (65) and having a circumferential groove (66) adjacent said head portion (65) and a bearing surface (68) at an end thereof facing said clamping members (14, 16); each of said dies (12, 12A, 12B, 12C, 12D, 12E, 12F, 12G) having a recess (80, 80F, 80G) sized to receive said head portion (65) therein and including means (82, 84; 122) for engaging said groove (66) and thereby retaining said head portion (65) within said recess (80, 80F, 80G); and said die recess (80, 80F, 80G) having a mating bearing surface (90, 90G, 90F) at an inner portion thereof positioned to abut said bearing surface (68) of said head portion (65) when said head portion is located within said recess (80, 80F, 80G) such that compressive forces are transmitted from said bearing surface (68) to said mating bearing surface (90, 90G, 90F) as said working surface forms a workpiece grasped by said clamping members (14, 16).
Claim 4
Dependent Claim
156 words
A tool system of claim 1, wherein each of said dies (12, 12A, 12B, 12C, 12D, 12E, 12F, 12G) terminating in a head portion (65) and having a circumferential groove (66) adjacent said head portion (65) and a mating bearing surface (90) at an end thereof facing said connection portion (64), said die-supporting end (64) having a recess (80) sized to receive said head portion (65) therein and including means (82, 84) for engaging said groove (66) and thereby retaining said head portion (65) within said recess (80); and said recess (80) having a bearing surface (68) at an inner portion thereof positioned to abut said mating bearing surface (90) of said head portion (65) when said head portion is located within said recess (80) such that compressive forces are transmitted from said bearing surface (68) to said mating bearing surface (90) as said working surface forms a workpiece grasped by said clamping members (14, 16).
Claim 5
Dependent Claim
88 words
The tool system of claim 1, wherein said groove engaging means (82, 84; 122) includes: an annular cam spring (118) rotatbly mounted on said die (12G) about said recess (80G) and including a convexity (120) thereon; a locking pin (122) slidably attached to said die (12G) and extending radially inwardly into said recess (80G) such that an inner end of said pin (122) may engage said circumferential groove (66) when displaced radially inwardly, and said pin (122) having a radially outward end slidably engaging said cam spring (118).
Claim 6
Dependent Claim
89 words
The tool system of claim 1 wherein said groove engaging means (82, 84; 122) includes: said recess (80, 80F) having sideward opening sized to receive said head portion (65) therethrough and shoulder means (82, 84) forming a slot (88, 88F) therebetween for slidably receiving said circumferential groove (66) such that said die is retaining on said die-supporting end (64) by engagement of said head portion (65) with said shoulder means (82, 84); and means (70, 92, 104) for releasably retaining said head portion (65) within said recess (80, 80F).
Claim 7
Dependent Claim
44 words
The tool system of claim 5 wherein said retaining means (70, 92) comprises a spring-loaded detent means (70) positioned in said bearing surface (68) on said head portion (65); and a detent recess (92) formed in said mating bearing surface (90) of said die.
Claim 8
Dependent Claim
92 words
lhetool system of claim 5 wherein said retaining means comprises a cap (104) rotatably mounted to said die (12F) and having slot means (110) positioned thereon such that said cap (104) can be rotated either to place said slot means (110) in registry with said slot (88F) on said die (12F) to allow said head portion (65) to enter said recess (80F) or to place said slot means (110) out of registry with said slot (88F) on said die (12F) such that said head portion (65) is captured within said recess (80F).
Claim 9
Dependent Claim
37 words
The tool system of claim 1 wherein at least one of said dies (12G) includes gauge means (98C) formed thereon for setting an optimum distance a tubular workpiece (94E) should protrude from said clamping members (14, 16).
Claim 10
Dependent Claim
46 words
The tool system of claim 8 wherein said gauge means (98C) includes an annular notch formed on said die, said notch having a depth corresponding to said optimum distance, and a width not less than the outside diameter of a tubular workpiece (94E) to be swaged.
Claim 11
Dependent Claim
126 words
The tool system of claim 1 wherein said shaft (54) of said main body (10) comprises: a housing (57) at an end opposite said die-supporting end (64) and having a hole (61) extending transversely therethrough; a handle (58) slidably positioned in said hole (61) and having a frusto-conical necked portion (62) adjacent an end thereof and a stop (63) positioned between said necked portion (62) and said adjacent end; and spring-loaded detent means (59) located in said housing (57) and contacting said handle (58) such that said handle end can be inserted through said hole (61), whereby said detent means (59) engages said frusto-conical necked portion (62) but contact between said detent and said stop (63) prevents withdrawal of said handle (58) from said hole (61).
Claim 12
Dependent Claim
39 words
The tool system of claim 1 wherein at least one of said dies (12A, 12D) includes a working surface (72A, 72D) having a flat, annular shape and oriented in a plane normal to a longitudinal axis of said die.
Claim 13
Dependent Claim
31 words
The tool system of claim 1 wherein said working surface (72A) comprises a generally cylindrical pilot portion (74A) and a generally concave annular portion (96) concentric with said pilot portion (74A).
Claim 14
Dependent Claim
32 words
The tool system of claim 1 wherein said working surface (72) comprises a generally frusto-conical portion (76), and a pilot portion (74) concentric with and extending outwardly from said frusto-conical portion (76).
Claim 15
Dependent Claim
17 words
The tool system of claim 1, wherein said working surface f72B, 72E) is substantially conical in shape.
Claim 16
Dependent Claim
42 words
The tool system of claim 1 wherein said working surface (72) of said die (12) includes a pilot portion (74), a frusto-conical portion (76) located inwardly of said pilot portion (74), and a cylindrical sizing portion located inwardly of said frusto-conical portion.
References Cited (Backward Citations)
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