US20070240474A1 - Crimping Tool - Google Patents
Crimping Tool Download PDFInfo
- Publication number
- US20070240474A1 US20070240474A1 US11/660,324 US66032405A US2007240474A1 US 20070240474 A1 US20070240474 A1 US 20070240474A1 US 66032405 A US66032405 A US 66032405A US 2007240474 A1 US2007240474 A1 US 2007240474A1
- Authority
- US
- United States
- Prior art keywords
- wheel
- crimping tool
- margin
- crimping
- folded
- 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.)
- Abandoned
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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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
Definitions
- the present invention relates to a crimping tool for fastening a first part and a second part by pinching a folded margin on the first part against a margin of the second part.
- Such a tool generally comprises a body having a wheel secured thereto so as to be free to rotate about an axis.
- the body is secured to one end of a robot arm so as to be pressed against the folded margin of the first part.
- the parts are resting on a crimping anvil in such a manner that the folded margin extends parallel to a portion of the anvil that serves to guide the tool.
- a crimping tool for crimping a first part to a second part by pinching a folded margin of the first part against a margin of the second part, the tool comprising a body to which a wheel is secured free to rotate about an axis and to move in translation parallel to the axis of rotation, the tool including an alignment element for aligning the wheel on an outer surface of the folded margin.
- the alignment element that serves to keep the wheel in alignment on the folded edge by co-operating with an outer surface thereof.
- FIG. 1 is a diagrammatic elevation view of a crimping tool in accordance with a first embodiment of the invention
- FIG. 2 is a view analogous to that of FIG. 1 , showing the tool while it is crimping;
- FIG. 3 is a diagrammatic view partially in section of a crimping tool in accordance with a second embodiment
- FIG. 4 is a view analogous to that of FIG. 1 showing a crimping tool in accordance with a variant of the second embodiment of the invention.
- the crimping tool 1 is designed to enable a part 4 to be secured relative to a part 5 by pressing a folded margin 6 of the part 4 on a flat margin 7 of the part 5 .
- the parts 4 and 5 in this example are steel sheets.
- the margin 6 is folded in conventional manner by progressively pressing the margin 6 against the margin 7 .
- the crimping tool 1 comprises a body 10 having a wheel 11 pivotally mounted thereon.
- the wheel 11 has an outer groove 12 axially divided into a section 13 for shaping the folded margin 6 into a bead, and a section 14 for pressing against an outer surface 8 of the fold of the folded margin 6 .
- the three embodiments differ by the way in which the wheel 11 is mounted on the body 10 .
- the wheel 11 is mounted to pivot on a pin 15 having one end secured to the body 10 .
- the wheel 11 also mounted on the pin 15 to slide between a first position in which the wheel 11 presses against an adjacent shoulder 16 of the body 10 , and a second position in which the wheel is spaced apart from the shoulder 16 .
- the wheel 11 is urged resiliently towards the first position by a spring 17 , likewise mounted on the pin 15 .
- the spring 17 is situated beside the section 14 of the groove 12 , while the shoulder 16 is situated beside the section 13 .
- the crimping tool is brought up to the folded margin 6 .
- the shoulder 16 against which the wheel 11 is held in abutment, constitutes a stationary reference surface enabling the position of the wheel 11 relative to the robot to be known.
- the wheel 11 in its first position is brought up to the folded margin 6 at an angle (see FIG. 1 ) so as to cause its section 14 to press against the outer surface 8 of the folded margin 6 and press the folded margin 6 against the top surface 9 of the margin 7 of the part 5 .
- the wheel 11 is then in an intermediate position between its first and second positions.
- the crimping tool 1 is then moved along the general direction of the folded margin 6 .
- the wheel 11 is free to move along the pin 15 between its first and second positions in such a manner that the section 14 remains in contact with the outer surface 8 , which thus serves to guide the wheel 11 .
- the co-operation between the section 14 and the outer surface 8 thus ensures accurate alignment of the wheel 11 on the folded margin 6 .
- the wheel 11 is mounted to rotate on a pin 20 secured to a support 21 that is mounted to slide on the body 10 parallel to the axis 20 between a first position in which the support 21 bears against a reference surface 22 of the body 10 , and a second position in which the support 21 is spaced apart from the reference surface 22 .
- the support 21 is mounted to slide on the body 10 , e.g. by means of a slideway or a ball-type linear bearing.
- a spring 23 is interposed between the body 10 and the support 21 to press the support 21 against the reference surface 22 .
- the wheel 11 in this embodiment is made up of three portions, namely a ring 24 having one end shaped to constitute the section 13 , a ring 25 , and a washer 26 mounted between the rings 24 and 25 , and having one end facing the ring 24 that is shaped to constitute the section 14 .
- the washer 26 and the rings 24 and 25 are interconnected in this embodiment by axial screws 27 .
- the rings 24 and 25 are made of steel, while the washer 26 is made of a material that is softer than that of the rings and than that of the part 4 , e.g. out of bronze or of plastics material. In a variant, the material of the rings may be softer than that of the part 4 , and/or than that of the washer 26 . In certain applications, the washer 26 may be at least as hard as the part 4 .
- the reference surface 22 of the support 21 bearing against the body 10 when the support 21 is in its first position is constituted by the terminal surface of a screw 28 engaged in the support 21 .
- the screw 28 serves to adjust the position of the wheel 11 when the support 21 is in its first position.
- the wheel 11 may be made as a single piece or as a plurality of pieces.
- the wheel 11 may also have other shapes, and for example it may include an outer groove presenting a section that is rectangular.
- the wheel 11 could be smooth and the alignment element of the wheel 11 could be constituted by a disk fixed on the support 21 in front of the wheel 11 for the purpose of bearing against the outer surface 8 .
Abstract
A tool for crimping a first part (4) to a second part (5) by pinching a folded margin (6) of the first part against a margin (7) of the second part, the tool including a body (10) to which a wheel (11) is secured to rotate freely about an axis and to move in translation parallel to the axis of rotation, the tool including an alignment element (14) for aligning the wheel on an outer surface (8) of the folded margin.
Description
- The present invention relates to a crimping tool for fastening a first part and a second part by pinching a folded margin on the first part against a margin of the second part.
- Such a tool generally comprises a body having a wheel secured thereto so as to be free to rotate about an axis. The body is secured to one end of a robot arm so as to be pressed against the folded margin of the first part. The parts are resting on a crimping anvil in such a manner that the folded margin extends parallel to a portion of the anvil that serves to guide the tool.
- That requires the parts to be positioned accurately on the crimping anvil. Unfortunately, given the tolerances with which parts are positioned on crimping anvils, it can happen that the folded margin of the part is not accurately aligned with the guide portion of the crimping anvil, so that the crimping tool does not follow exactly the folded margin of the first part. This leads to a defect, which is more particularly inconvenient when the purpose of the crimping is to shape the folded edge into a cord or bead shape of regularity that depends on the displacement direction of the wheel being aligned with the folded margin.
- It will therefore be advantageous to have means available for aligning the wheel accurately with the folded margin.
- To this end, according to the invention, there is provided a crimping tool for crimping a first part to a second part by pinching a folded margin of the first part against a margin of the second part, the tool comprising a body to which a wheel is secured free to rotate about an axis and to move in translation parallel to the axis of rotation, the tool including an alignment element for aligning the wheel on an outer surface of the folded margin.
- Thus, the final positioning of the wheel is provided by the alignment element that serves to keep the wheel in alignment on the folded edge by co-operating with an outer surface thereof.
- Other characteristics and advantages of the invention appear on reading the following description of particular, non-limiting embodiments of the invention.
- Reference is made to the accompanying drawings, in which:
-
FIG. 1 is a diagrammatic elevation view of a crimping tool in accordance with a first embodiment of the invention; -
FIG. 2 is a view analogous to that ofFIG. 1 , showing the tool while it is crimping; -
FIG. 3 is a diagrammatic view partially in section of a crimping tool in accordance with a second embodiment; and -
FIG. 4 is a view analogous to that ofFIG. 1 showing a crimping tool in accordance with a variant of the second embodiment of the invention. - With reference to the figures, the invention is described herein concerning a crimping tool given
overall reference 1, that is secured to oneend 2 of a conventional robot arm 3. Thecrimping tool 1 is designed to enable apart 4 to be secured relative to apart 5 by pressing a foldedmargin 6 of thepart 4 on aflat margin 7 of thepart 5. Theparts margin 6 is folded in conventional manner by progressively pressing themargin 6 against themargin 7. - The
crimping tool 1 comprises abody 10 having awheel 11 pivotally mounted thereon. - The
wheel 11 has anouter groove 12 axially divided into asection 13 for shaping the foldedmargin 6 into a bead, and asection 14 for pressing against anouter surface 8 of the fold of the foldedmargin 6. - The three embodiments differ by the way in which the
wheel 11 is mounted on thebody 10. - With reference to
FIGS. 1 and 2 , in the first embodiment, thewheel 11 is mounted to pivot on apin 15 having one end secured to thebody 10. Thewheel 11 also mounted on thepin 15 to slide between a first position in which thewheel 11 presses against anadjacent shoulder 16 of thebody 10, and a second position in which the wheel is spaced apart from theshoulder 16. Thewheel 11 is urged resiliently towards the first position by aspring 17, likewise mounted on thepin 15. Thespring 17 is situated beside thesection 14 of thegroove 12, while theshoulder 16 is situated beside thesection 13. - To begin crimping, the crimping tool is brought up to the folded
margin 6. During an approach stage, theshoulder 16, against which thewheel 11 is held in abutment, constitutes a stationary reference surface enabling the position of thewheel 11 relative to the robot to be known. Thewheel 11 in its first position is brought up to the foldedmargin 6 at an angle (seeFIG. 1 ) so as to cause itssection 14 to press against theouter surface 8 of the foldedmargin 6 and press the foldedmargin 6 against the top surface 9 of themargin 7 of thepart 5. Thewheel 11 is then in an intermediate position between its first and second positions. - The
crimping tool 1 is then moved along the general direction of the foldedmargin 6. During the displacement of thecrimping tool 1 along the foldedmargin 6, thewheel 11 is free to move along thepin 15 between its first and second positions in such a manner that thesection 14 remains in contact with theouter surface 8, which thus serves to guide thewheel 11. The co-operation between thesection 14 and theouter surface 8 thus ensures accurate alignment of thewheel 11 on the foldedmargin 6. - With reference to
FIG. 3 , and in accordance with the second embodiment, thewheel 11 is mounted to rotate on apin 20 secured to asupport 21 that is mounted to slide on thebody 10 parallel to theaxis 20 between a first position in which thesupport 21 bears against areference surface 22 of thebody 10, and a second position in which thesupport 21 is spaced apart from thereference surface 22. Thesupport 21 is mounted to slide on thebody 10, e.g. by means of a slideway or a ball-type linear bearing. Aspring 23 is interposed between thebody 10 and thesupport 21 to press thesupport 21 against thereference surface 22. - The
wheel 11 in this embodiment is made up of three portions, namely aring 24 having one end shaped to constitute thesection 13, aring 25, and awasher 26 mounted between therings ring 24 that is shaped to constitute thesection 14. Thewasher 26 and therings axial screws 27. Therings washer 26 is made of a material that is softer than that of the rings and than that of thepart 4, e.g. out of bronze or of plastics material. In a variant, the material of the rings may be softer than that of thepart 4, and/or than that of thewasher 26. In certain applications, thewasher 26 may be at least as hard as thepart 4. - In the variant of
FIG. 4 , thereference surface 22 of thesupport 21 bearing against thebody 10 when thesupport 21 is in its first position is constituted by the terminal surface of ascrew 28 engaged in thesupport 21. Thescrew 28 serves to adjust the position of thewheel 11 when thesupport 21 is in its first position. - Naturally, the invention is not limited to the embodiments described, and variants can be applied thereto without going beyond the ambit of the invention as defined by the claims.
- In particular, the
wheel 11 may be made as a single piece or as a plurality of pieces. Thewheel 11 may also have other shapes, and for example it may include an outer groove presenting a section that is rectangular. - In the second embodiment, for example, the
wheel 11 could be smooth and the alignment element of thewheel 11 could be constituted by a disk fixed on thesupport 21 in front of thewheel 11 for the purpose of bearing against theouter surface 8.
Claims (8)
1-7. (canceled)
8. A crimping tool for crimping a first part (4) to a second part (5) by pinching a folded margin (6) of the first part against a margin (7) of the second part, the tool comprising a body (10) to which a wheel (11) is secured free to rotate about an axis, wherein the wheel is secured to the body so as to be free also to move in translation parallel to the axis of rotation, and wherein the tool includes an alignment element (14) for aligning the wheel on an outer surface (8) of the folded margin.
9. A crimping tool according to claim 8 , wherein the wheel (11) is mounted to slide between two extreme positions, one of which is defined by an abutment (16, 22) having the same orientation as the outer surface, the wheel being urged resiliently towards said position.
10. A crimping tool according to claim 8 , wherein the wheel (11) is mounted to move freely in translation along its axis of rotation (15).
11. A crimping tool according to claim 8 , wherein the axis of rotation (20) of the wheel (11) is secured to a support (21) mounted to move freely in translation relative to the body (10).
12. A crimping tool according to claim 8 , wherein the alignment element comprises a portion (14) of the wheel (11) designed to come into contact with the outer surface (8) of the folded margin (6).
13. A crimping tool according to claim 9 , wherein said portion (14) of the wheel (11) is made of a material that is softer than the remainder of the wheel.
14. A crimping tool according to claim 9 , wherein said portion (14) of the wheel (11) is made of a material that is softer than that of the first part.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2005/001723 WO2006027432A1 (en) | 2004-08-16 | 2005-07-05 | Crimping tool |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070240474A1 true US20070240474A1 (en) | 2007-10-18 |
Family
ID=38603559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/660,324 Abandoned US20070240474A1 (en) | 2005-07-05 | 2005-07-05 | Crimping Tool |
Country Status (1)
Country | Link |
---|---|
US (1) | US20070240474A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048825A (en) * | 1975-12-29 | 1977-09-20 | John Burke Dastrup | Coil re-bar straightener and cutter |
US5245848A (en) * | 1992-08-14 | 1993-09-21 | Reynolds Metals Company | Spin flow necking cam ring |
US6425277B2 (en) * | 1999-12-30 | 2002-07-30 | Unova Ip Corp. | Sheet metal hemming method and apparatus |
US20030209048A1 (en) * | 2002-05-10 | 2003-11-13 | Ford Motor Company | Compressed-radius hem-forming process and tool |
US6694793B1 (en) * | 1999-04-19 | 2004-02-24 | Abb Ab | Process in joining |
US20040035172A1 (en) * | 2001-10-31 | 2004-02-26 | Masazumi Sawa | Device and method for hemming processing |
-
2005
- 2005-07-05 US US11/660,324 patent/US20070240474A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048825A (en) * | 1975-12-29 | 1977-09-20 | John Burke Dastrup | Coil re-bar straightener and cutter |
US5245848A (en) * | 1992-08-14 | 1993-09-21 | Reynolds Metals Company | Spin flow necking cam ring |
US6694793B1 (en) * | 1999-04-19 | 2004-02-24 | Abb Ab | Process in joining |
US6425277B2 (en) * | 1999-12-30 | 2002-07-30 | Unova Ip Corp. | Sheet metal hemming method and apparatus |
US20040035172A1 (en) * | 2001-10-31 | 2004-02-26 | Masazumi Sawa | Device and method for hemming processing |
US20030209048A1 (en) * | 2002-05-10 | 2003-11-13 | Ford Motor Company | Compressed-radius hem-forming process and tool |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ABB FRANCE, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MALATIER, FRANCOIS;OHLSSON, ARNE;REEL/FRAME:018949/0975 Effective date: 20070122 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |