EP0722794A1 - Tool for altering the diameter, shape or configuration of a tube - Google Patents
Tool for altering the diameter, shape or configuration of a tube Download PDFInfo
- Publication number
- EP0722794A1 EP0722794A1 EP96300276A EP96300276A EP0722794A1 EP 0722794 A1 EP0722794 A1 EP 0722794A1 EP 96300276 A EP96300276 A EP 96300276A EP 96300276 A EP96300276 A EP 96300276A EP 0722794 A1 EP0722794 A1 EP 0722794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- die
- die block
- configuration
- tool according
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/021—Enlarging by means of tube-flaring hand tools
Definitions
- This invention is concerned with improvements in and relating to tools, such as those used for flaring and particularly, though not exclusively, those used for expanding the ends of brake pipe fittings.
- a tool for use in altering the diameter, shape or configuration of an article including a die for controlling the shape to which the article deforms and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the die is provided in a die block which is removable from the tool.
- the die can readily be replaced whether for repair or to insert a die block containing a die of different size.
- the tool may be provided with two or more dies, preferably one die is provided at one end of a passage provided in the tool and another die is provided at the other end of the passage.
- the tool has a longer life as two dies will last longer than one before becoming unusable due to damage.
- a tool for use in altering the diameter, shape or configuration of an article including means for controlling the deformation of the article and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the deformation controlling means comprises one or more passages through the tool, one or more of the passages being provided with a die portion at one end and a further die portion at the other end.
- the dies may be provided within a die block which is removable from the tool. In this way replacement of the die is made easier and cheaper as complete replacement of the tool is not required.
- One or more of the dies provided may be of different sizes and/or be of different configuration to one or more of the other dies. In this way a tool is provided which is far more versatile as different sizes of flaring or different types of flaring can be effected without the need to change tool or die block.
- the tool may include two body components having a closed and released state, the components cooperating in the closed state to retain the releasable die block in the tool, and in the released state permitting the removal of the die block.
- the body components are pivotally connected so as to provide an easily and accurately reproducable transition from the closed to released state and vice versa.
- pivotal connection is provided at an end of the tool, ideally at the end opposed to a handle portion used for supporting the tool, for ease of handling.
- the die block is preferably accommodated in an aperture in the tool.
- the aperture is defined in part by one of the tool body components and in part by another. In this way easy access can be obtained in the released state.
- the body components are held in the closed state by retaining means which engage with the body components. This ensures the die block is firmly held in place during flaring and no undesirable separation of the body components occurs.
- the retaining means comprise a threaded member.
- the threaded member may be pivotally attached to one of the body components and cooperate with a notch on the other. Additional restraining force may be applied by tightening an additional member on the threaded member so as to abut with the second body component.
- a kit comprising a tool according to the first aspect of the invention and/or a tool according to the second aspect, with a removable die block, wherein the kit includes one or more additional die blocks.
- the kit includes die blocks which provide a range of sizes of dies and/or dies for a range of flaring applications.
- the kit thus provided represents a versatile and readily-to-hand set of apparatus.
- a die block having one or more through passages, one or more of the passages being provided with a die at one end and a further die at the other end.
- the dies are of different sizes and/or configurations.
- Sets of two or more such die blocks may be provided.
- a tool for use in altering the diameter, shape or configuration of a tubular article including a die for controlling the deformation of the article and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the pressure is applied by hydraulically activated means.
- the tool is hand held, easing its use and location of use.
- the tool may be provided with a clamping member which cooperates with the pressure applying means.
- the pressure applying means may cooperate with the clamping member by means of a threaded engagement.
- the clamping member may be releasable from the tool.
- the clamping member may engage the tool by means of threaded connectors.
- notches in the clamping member may cooperate with ridges on the tool, or vice versa, to position the clamping member relative to the tool.
- the tool 1 comprises a handle member 2 and housing member 3 pivotally mounted relative to each other at their respective ends 4, 5 by a pin 6.
- Each member 2, 3 has a channel 7, 8 extending over their full width, which channels oppose each other in the closed position, when surface 9 abuts surface 10.
- the channels 7, 8 accommodate a removable die block 11 (shown in Figure 3). In the closed position the die block 11 is restrained within the channels 7, 8.
- the handle member 2 also has a hand-held portion 12 by means of which the operator controls and positions the tool.
- a threaded member 13 is pivotally mounted between two projections 14 from the handle member 2 base by means of a pin 15. With the housing member 3 in the closed position the threaded member 13 can be swung so as to pass between opposing projections 16 on the housing member 3. The nut 17 can then be screwed down until it abuts surface 18 on housing member 3. The members 2, 3 are thus retained in the closed formation.
- the die block 11 comprises a rectangular block with a central axially aligned passage 19 having enlarged end portions 20, 21.
- the transition surface 22 between the passage 19 and enlarged portion 20 onto the right end is radial, so providing for DIN type flaring.
- the left end provides an axially inclined radiating surface 23, so providing for SAE type flaring.
- the tool 1 is opened and the die block 11 having the desired size passage 19 is inserted in the channel 7, 8.
- the die block 11 is inserted so that the desired transition surface configuration is on the desired side of the tool 1.
- the tool 1 is then closed and the handle and die housing members 2, 3 respectively are restrained relative to one another by the threaded member 13 as previously discussed.
- FIG. 4 This provides for a tool assembly having a configuration as seen end-on in Figure 4.
- Each of the housing and handle members 2, 3 are provided with a rib 28 raised relative to the member.
- the rib 20 runs along each side of each member.
- An hydraulic mounting member 25 can then be slid over the end of the tool 1 and run along the ribs 28.
- the hydraulic mounting member is provided with notches 26 which cooperate with the ribs to resist direct movement away from the members 2, 3.
- the hydraulic mounting member 25 is provided with a threaded aperture 27 into which the hydraulically operated stamp can be screwed.
- the stamp is consequently held in position relative to the members 2, 3 during the flaring operation.
- Flaring is effected by applying hydraulic pressure to the stamp so forcing the cone into the pipe and expanding it to the die configuration.
- the flared pipe is extracted by removing the hydraulic stamp, hydraulic mounting member, threaded member and opening the members 2, 3 in the reverse of the aforementioned procedure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Prostheses (AREA)
Abstract
Description
- This invention is concerned with improvements in and relating to tools, such as those used for flaring and particularly, though not exclusively, those used for expanding the ends of brake pipe fittings.
- A significant number of flaring tools already exist which in basic terms comprise a die for restraining the pipe to be flared and a punch which enters the pipe and expands it to the shape of the die end.
- A wide variety of techniques for mounting the die and bringing the flaring cone and pipe into contact are known, such as rotating the flaring tool to advance it into contact with the pipe. Existing tools face a number of problems in terms of their working life, ease of use, accuracy and reproducibility of results, as well as cost.
- It is the aim of the present invention to provide a versatile tool which is easy to use and for which those components most prone to wear or damage can easily be replaced.
- According to a first aspect of the invention we provide a tool for use in altering the diameter, shape or configuration of an article, the tool including a die for controlling the shape to which the article deforms and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the die is provided in a die block which is removable from the tool.
- In this way the die can readily be replaced whether for repair or to insert a die block containing a die of different size.
- The tool may be provided with two or more dies, preferably one die is provided at one end of a passage provided in the tool and another die is provided at the other end of the passage.
- In this way the tool has a longer life as two dies will last longer than one before becoming unusable due to damage.
- According to a second aspect of the invention we provide a tool for use in altering the diameter, shape or configuration of an article, the tool including means for controlling the deformation of the article and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the deformation controlling means comprises one or more passages through the tool, one or more of the passages being provided with a die portion at one end and a further die portion at the other end.
- In this way more than one die is provided in a given tool so as to provide for a longer active life than can be achieved by a single die.
- The dies may be provided within a die block which is removable from the tool. In this way replacement of the die is made easier and cheaper as complete replacement of the tool is not required.
- Other possible features for a tool according to the first and/or the second aspect of the invention include the following:-
- One or more of the dies provided may be of different sizes and/or be of different configuration to one or more of the other dies. In this way a tool is provided which is far more versatile as different sizes of flaring or different types of flaring can be effected without the need to change tool or die block.
- The tool may include two body components having a closed and released state, the components cooperating in the closed state to retain the releasable die block in the tool, and in the released state permitting the removal of the die block.
- Preferably the body components are pivotally connected so as to provide an easily and accurately reproducable transition from the closed to released state and vice versa.
- Most preferably the pivotal connection is provided at an end of the tool, ideally at the end opposed to a handle portion used for supporting the tool, for ease of handling.
- The die block is preferably accommodated in an aperture in the tool. Most preferably the aperture is defined in part by one of the tool body components and in part by another. In this way easy access can be obtained in the released state.
- Preferably the body components are held in the closed state by retaining means which engage with the body components. This ensures the die block is firmly held in place during flaring and no undesirable separation of the body components occurs.
- Most preferably the retaining means comprise a threaded member. The threaded member may be pivotally attached to one of the body components and cooperate with a notch on the other. Additional restraining force may be applied by tightening an additional member on the threaded member so as to abut with the second body component.
- According to a third aspect of the invention we provide a kit comprising a tool according to the first aspect of the invention and/or a tool according to the second aspect, with a removable die block, wherein the kit includes one or more additional die blocks.
- Preferably the kit includes die blocks which provide a range of sizes of dies and/or dies for a range of flaring applications. The kit thus provided represents a versatile and readily-to-hand set of apparatus.
- According to a fourth aspect of the invention we provide a die block having one or more through passages, one or more of the passages being provided with a die at one end and a further die at the other end.
- Preferably the dies are of different sizes and/or configurations.
- Sets of two or more such die blocks may be provided.
- According to a fifth aspect of the invention we provide a tool for use in altering the diameter, shape or configuration of a tubular article, the tool including a die for controlling the deformation of the article and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the pressure is applied by hydraulically activated means.
- In this way readily reproducible force applying conditions are obtained quickly and with minimum effort.
- Preferably the tool is hand held, easing its use and location of use.
- The tool may be provided with a clamping member which cooperates with the pressure applying means.
- The pressure applying means may cooperate with the clamping member by means of a threaded engagement.
- The clamping member may be releasable from the tool.
- The clamping member may engage the tool by means of threaded connectors.
- Alternatively, notches in the clamping member may cooperate with ridges on the tool, or vice versa, to position the clamping member relative to the tool.
- A number of embodiments of the invention will now be described, by way of example only, in which:-
- Figure 1
- is a cross-section along the longitudinal axis of a tool in open configuration;
- Figure 2
- is a plane view from below of the handle member of Figure 1;
- Figure 3
- shows an enlarged partial cross-section of a die block for use in the present invention;
- Figure 4
- shows a view in the direction of arrow A in Figure 1 with the tool in closed configuration and the cross-sectioned hydraulic clamp attachment in place; and
- Figure 5
- shows a view of the clamp attachment in the direction of arrow B of Figure 4.
- The
tool 1 comprises ahandle member 2 andhousing member 3 pivotally mounted relative to each other at theirrespective ends 4, 5 by apin 6. - Each
member channel surface 9abuts surface 10. Thechannels channels - The
handle member 2 also has a hand-heldportion 12 by means of which the operator controls and positions the tool. - A threaded
member 13 is pivotally mounted between twoprojections 14 from thehandle member 2 base by means of apin 15. With thehousing member 3 in the closed position the threadedmember 13 can be swung so as to pass betweenopposing projections 16 on thehousing member 3. Thenut 17 can then be screwed down until it abutssurface 18 onhousing member 3. Themembers - As illustrated in Figure 3 the die block 11 comprises a rectangular block with a central axially aligned
passage 19 having enlargedend portions transition surface 22 between thepassage 19 and enlargedportion 20 onto the right end is radial, so providing for DIN type flaring. The left end provides an axially inclined radiatingsurface 23, so providing for SAE type flaring. - In use the
tool 1 is opened and the die block 11 having the desiredsize passage 19 is inserted in thechannel tool 1. - The
tool 1 is then closed and the handle and diehousing members member 13 as previously discussed. - This provides for a tool assembly having a configuration as seen end-on in Figure 4. Each of the housing and handle
members rib 28 raised relative to the member. Therib 20 runs along each side of each member. - An hydraulic mounting
member 25 can then be slid over the end of thetool 1 and run along theribs 28. The hydraulic mounting member is provided withnotches 26 which cooperate with the ribs to resist direct movement away from themembers - The hydraulic mounting
member 25 is provided with a threadedaperture 27 into which the hydraulically operated stamp can be screwed. The stamp is consequently held in position relative to themembers - Flaring is effected by applying hydraulic pressure to the stamp so forcing the cone into the pipe and expanding it to the die configuration.
- The flared pipe is extracted by removing the hydraulic stamp, hydraulic mounting member, threaded member and opening the
members
Claims (10)
- A tool for use in altering the diameter, shape or configuration of a pipe or tube, the tool including a die for controlling the shape to which the article deforms and the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the die is provided in a die block which is removable from the tool.
- A tool according to claim 1 in which one die is provided at one end of a passage provided in the tool and another die is provided at the other end of the passage.
- A tool according to claim 1 or claim 2 the tool being adapted to cooperate with means for applying pressure to deform the article, wherein the pressure is applied by hydraulically activated means.
- A tool according to any of claims 1 to 3 in which one or more of the dies are of different sizes and/or of different configuration to one or more of the other dies.
- A tool according to any preceding claim wherein the tool includes two body components having a closed and released state, the components cooperating in the closed state to retain the releasable die block in the tool, and in the released state permitting the removal of the die block.
- A tool according to claim 5 wherein the die block is accommodated in an aperture in the tool.
- A tool according to any preceding claim wherein the tool is hand held.
- A tool according to any of claims 3 to 7 wherein the tool is provided with a clamping member which cooperates with the pressure applying means.
- A die block having one or more through passages, one or more of the passages being provided with a die at one end and a further die at the other end.
- A tool substantially as herein described with reference to the drawings.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9500862 | 1995-01-17 | ||
GBGB9500862.9A GB9500862D0 (en) | 1995-01-17 | 1995-01-17 | Improvements in and relating to tools |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0722794A1 true EP0722794A1 (en) | 1996-07-24 |
EP0722794B1 EP0722794B1 (en) | 2001-03-14 |
Family
ID=10768132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960300276 Expired - Lifetime EP0722794B1 (en) | 1995-01-17 | 1996-01-15 | Tool for altering the diameter, shape or configuration of a tube |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0722794B1 (en) |
DE (1) | DE69612023T2 (en) |
ES (1) | ES2154787T3 (en) |
GB (1) | GB9500862D0 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6619099B2 (en) | 2000-10-16 | 2003-09-16 | Mastercool, Inc. | Hydraulically powered flaring hand tool |
CN103567310A (en) * | 2012-07-26 | 2014-02-12 | 珠海格力电器股份有限公司 | Clamping die for pipe fitting flared mouth |
US10226810B2 (en) | 2016-06-07 | 2019-03-12 | Uniweld Products, Inc. | Expanding tool and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2241091A (en) * | 1939-06-08 | 1941-05-06 | Hood Josa Allen | Tube-end expander |
FR1028057A (en) * | 1950-09-28 | 1953-05-19 | Thomas Et Bordenave P | Device for shaping pipes |
US2737225A (en) * | 1951-09-20 | 1956-03-06 | Mathew S Jasinski | Pipe flaring device |
US3913364A (en) * | 1974-07-11 | 1975-10-21 | Imp Eastman Corp | Flaring tool |
EP0501928A1 (en) * | 1991-02-22 | 1992-09-02 | REFI AUTOMAZIONI OLEODINAMICHE S.r.l. | Apparatus for flaring fitting pipes |
-
1995
- 1995-01-17 GB GBGB9500862.9A patent/GB9500862D0/en active Pending
-
1996
- 1996-01-15 DE DE1996612023 patent/DE69612023T2/en not_active Expired - Lifetime
- 1996-01-15 ES ES96300276T patent/ES2154787T3/en not_active Expired - Lifetime
- 1996-01-15 EP EP19960300276 patent/EP0722794B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2241091A (en) * | 1939-06-08 | 1941-05-06 | Hood Josa Allen | Tube-end expander |
FR1028057A (en) * | 1950-09-28 | 1953-05-19 | Thomas Et Bordenave P | Device for shaping pipes |
US2737225A (en) * | 1951-09-20 | 1956-03-06 | Mathew S Jasinski | Pipe flaring device |
US3913364A (en) * | 1974-07-11 | 1975-10-21 | Imp Eastman Corp | Flaring tool |
EP0501928A1 (en) * | 1991-02-22 | 1992-09-02 | REFI AUTOMAZIONI OLEODINAMICHE S.r.l. | Apparatus for flaring fitting pipes |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6619099B2 (en) | 2000-10-16 | 2003-09-16 | Mastercool, Inc. | Hydraulically powered flaring hand tool |
CN103567310A (en) * | 2012-07-26 | 2014-02-12 | 珠海格力电器股份有限公司 | Clamping die for pipe fitting flared mouth |
US10226810B2 (en) | 2016-06-07 | 2019-03-12 | Uniweld Products, Inc. | Expanding tool and method |
US11389856B2 (en) | 2016-06-07 | 2022-07-19 | Uniweld Products, Inc. | Expanding tool and method |
Also Published As
Publication number | Publication date |
---|---|
ES2154787T3 (en) | 2001-04-16 |
DE69612023D1 (en) | 2001-04-19 |
EP0722794B1 (en) | 2001-03-14 |
DE69612023T2 (en) | 2001-07-19 |
GB9500862D0 (en) | 1995-03-08 |
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