WO2011072024A2 - Glissière de came et appareil de poinçon - Google Patents

Glissière de came et appareil de poinçon Download PDF

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Publication number
WO2011072024A2
WO2011072024A2 PCT/US2010/059483 US2010059483W WO2011072024A2 WO 2011072024 A2 WO2011072024 A2 WO 2011072024A2 US 2010059483 W US2010059483 W US 2010059483W WO 2011072024 A2 WO2011072024 A2 WO 2011072024A2
Authority
WO
WIPO (PCT)
Prior art keywords
cam
extension member
longitudinal axis
mounting face
plane
Prior art date
Application number
PCT/US2010/059483
Other languages
English (en)
Other versions
WO2011072024A3 (fr
Inventor
Davoud Mollahassani
Masaaki Kubota
Takanori Togashi
Original Assignee
Sankyo Oilless Industry (U.S.A. ) Corp.
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.)
Filing date
Publication date
Application filed by Sankyo Oilless Industry (U.S.A. ) Corp. filed Critical Sankyo Oilless Industry (U.S.A. ) Corp.
Publication of WO2011072024A2 publication Critical patent/WO2011072024A2/fr
Publication of WO2011072024A3 publication Critical patent/WO2011072024A3/fr

Links

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape

Definitions

  • the present disclosure relates generally to the field of die tools and to cam sliders used in such die tools. More specifically, this disclosure relates to a cam slider for performing a working, cutting and/or forming operation, such as a punching operation, in a die tool apparatus.
  • Cam sliders are generally known and used in die tools in metalworking, such as in a die tool in a stamping press.
  • the cam slider has additional attachments, devices, components, and the like.
  • some cam sliders have devices for performing a punching process or some other process.
  • U.S. Patent No. 5,231 ,907 which describes an assembly comprising an upper die having an actuating cam with an inclined actuating surface, and a lower die having a passive cam with an inclined passive surface.
  • the lower die is coupled to a stationary guide stand and base plate.
  • the upper die descends towards the lower die on which the sample of material (e.g., metal sheet, etc.) sits.
  • the inclined face of the actuating cam contacts the inclined passive face of the passive cam, urging the passive cam to move along a guide stand in the direction of a blank or sample.
  • a work tool such as a punch, for instance
  • stamps stamps (shapes, contours, etc.) the blank or sample of material according to predetermined specifications and the shape of the upper and lower dies.
  • a drawback of the foregoing apparatus is the limited utility of the assembly occasioned by the work envelope defined by the configuration of the assembly. More specifically, the configuration of the cam slider apparatus of U.S. Patent No. 5,231 ,907 limits its capability to perform operations on a wide variety of blanks, material samples, etc., where the die tool is unable to reach the blank, material sample, etc.
  • the cam slider 1 includes, among other components, a cam slide 5, a lower cam 10 defining a cam driver, an upper cam 15 defining a cam holder, a cam slide guide 20, and an elongated "nose” portion 25 coupled to the cam slide 5 and having a mounting face 26 for mounting a punch device 30 or other work tool on the end.
  • Upper cam 15 includes cam slide guide 20, and both are movably mounted on the cam slide 5, while cam slide 5 is movably engageable with lower cam 10.
  • the "nose" portion 25 enables the punch feature to process (punch) a material sample (e.g., metal panel, etc.) as required by predetermined specifications and/or as desired.
  • FIGS. 3A-3D The operation of the conventional, known cam slider unit of FIGS. 1 and 2 is shown in FIGS. 3A-3D.
  • the assembly comprising the upper cam 15, cam slide guide 20, and cam slide 5 with the elongated "nose" portion 25 and punch device 30 descends downward towards the lower cam 10 (FIG. 3A) until the underside, inclined surface of the cam slide 5 contacts the top inclined surface of the lower cam 10 (FIG. 3B).
  • co-acting inclined (i.e., cam) surfaces of each of the cam slide 5 and upper cam 15, and co-acting inclined (i.e., cam) surfaces of the cam slide 5 and lower cam 10 work to drive the cam slide 5 and "nose" portion 25 progressively in the direction D towards a material sample (e.g., panel, metal sheet, etc.(not shown)) to be processed (e.g., punched, etc.), as shown in FIGS. 3C and 3D.
  • material sample e.g., panel, metal sheet, etc.(not shown)
  • the drawbacks or issues with the foregoing cam slider design are at least two-fold.
  • the relatively long mount face of the elongated "nose" portion 25 creates an overhang which makes the cam slide unstable and creates accuracy and/or precision issues when the work tool (i.e., punch device) performs the punching process on the blank being formed (e.g., the intended location of the passage to be created on the blank (e.g., metal panel, etc.) will be off the intended target location as well as any tolerances, etc.).
  • the work tool i.e., punch device
  • the intended location of the passage to be created on the blank e.g., metal panel, etc.
  • the accuracy and/or precision of the punch will further diminish.
  • the long "nose” design will not accommodate a variety of material samples (e.g., metal panel, etc.) having particular dimensions (e.g., length, width, etc.) or irregular shapes (contours).
  • material samples e.g., metal panel, etc.
  • particular dimensions e.g., length, width, etc.
  • irregular shapes e.g., contours
  • some shapes and sizes of material samples may hinder the stamping and/or punching process (e.g., the cam driver may not be able to extend due to interference from the material sample M (e.g., panel, etc.), as best shown in FIG. 1 .
  • a cam slider and punch apparatus comprising: a lower cam; an extension member comprising a main body portion having a length extending along a longitudinal axis between opposite first and second ends, the extension member being movably mountable on the lower cam proximate the first end, and terminating proximate the second end in a mounting face for supporting a work tool; and an upper cam having a length extending along a longitudinal axis between opposite first and second ends, the upper cam being movably mounted on the extension member.
  • the lower cam, upper cam and extension member comprise co-acting inclined surfaces whereby movement of the extension member is effected by relative movement between the upper cam and the lower cam.
  • the upper cam includes at least first and second guides movably mounted on the extension member proximate at least the first and second ends of the extension member, the at least first and second guides being disposed proximate at least the first and second ends of the upper cam.
  • the at least first and second guides are disposed in planes that are each oriented non-perpendicular relative to the longitudinal axis of the extension member.
  • an angle defined by the intersection between the plane of the mounting face and the longitudinal axis of the extension member is 90 degrees or less.
  • the extension member may comprise a separate cam slide and a mount, the cam slide including the main body portion of the extension member, and the mount including the mounting face for supporting a work tool, and wherein further the mount is disposed on the cam slide proximate the second end of the main body portion.
  • the mounting face is disposed in a plane that is oriented perpendicular relative to the longitudinal axis of the extension member, and the angle defined by the intersection between the plane of the mounting face and the longitudinal axis of the extension member 90 degrees.
  • the longitudinal axis of the upper cam and the longitudinal axis of the extension member may be non-parallel.
  • the lower cam defines a sliding face the plane of which may be disposed substantially perpendicular to the plane of the mounting face.
  • the mounting face is disposed in a plane that is oriented non-perpendicular relative to the longitudinal axis of the extension member, and the angle defined by the intersection between the plane of the mounting face and the longitudinal axis of the extension member is less than 90 degrees.
  • the longitudinal axis of the upper cam and the longitudinal axis of the extension member may be substantially parallel.
  • the lower cam defines a sliding face the plane of which may be disposed so as to be oriented non-perpendicular relative to the plane of the mounting face.
  • FIG. 1 is a side view of a conventional cam slider unit known in the prior art
  • FIG. 2 is a perspective view of the conventional cam slider unit of FIG. 1 ;
  • FIGS. 3A-3D are a progression of side views of the conventional cam slider unit of FIG. 1 in operation, according to an exemplary embodiment
  • FIG. 4 is a side view of a cam slider unit, according to an exemplary embodiment
  • FIG. 5 is perspective view of the cam slider unit of FIG. 4, according to an exemplary embodiment
  • FIG. 6 is an exploded perspective view of the cam slider unit of FIG. 4, according to an exemplary embodiment
  • FIGS. 7A-7D are a progression of side views of the cam slider unit of FIG. 4 in operation, according to an exemplary embodiment
  • FIGS. 8A-8D depict each of the conventional cam slider unit of FIG. 1 and various inventive cam slider units, including the exemplary cam slider unit of FIG. 4;
  • FIG. 9 is a side view of a cam slider unit according to an alternative embodiment of the present invention, wherein extension member has been lengthened as compared to the embodiment of FIG. 4; and FIG. 10 is a side view of a further alternative embodiment of a cam slider of the present invention.
  • a cam slider and punch apparatus 100 comprising: a lower cam 110; an extension member 120 comprising a main body portion 121 having a length extending along a longitudinal axis X between opposite first 122 and second 123 ends, the extension member being movably on the lower cam 110 proximate the first end 122, and terminating proximate the second end 123 in a mounting face 141 for supporting a work tool 145; and an upper cam 150 having a length extending along a longitudinal axis Z between opposite first 151 and second 152 ends, the upper cam 150 including at least first 153 and second 154 guides movably mounted on the extension member 120 proximate the first 122 and second 123 ends of the extension member 120 and the first 151 and second 152 ends of the upper cam 150, and the first 153 and second 154 guides being disposed in planes that are each oriented non- perpendicular
  • the upper cam 150 defines a cam holder having a plurality of surfaces (e.g., top surface, a first inclined surface, a second inclined surface, etc.), a plurality of grooves/channels, a plurality of apertures, first 153 and second 154 guides, and a plurality of gib plates 155.
  • the first 153 and second 154 guides define inclined, cam surfaces of the upper cam.
  • the lower cam 110 defines a cam driver having a base 111 and an inclined, cam surface 112.
  • the extension member 120 includes a main body portion 121 , first 124 and second 125 inclined surfaces, a plurality of grooves/channels, a plurality of apertures, a plurality of side plates 126, a plurality of bottom plates 127, a positive return member 128, a plurality of cam slide return springs 129, and a mounting face 131 for mounting a device/work tool 140 (e.g., punch, pierce, etc.) on the end.
  • First 124 and second 125 inclined surfaces define inclined cam surfaces of the extension member which co-act with guide surfaces 153, 154 of the upper cam 150 as hereafter described.
  • the extension member 120 is movably mountable to the lower cam/cam driver 110 and enables the punch feature to process (punch) a material sample (e.g., metal panel, etc.) as required by predetermined specifications and/or as desired.
  • a material sample e.g., metal panel, etc.
  • the drawbacks of prior art cam sliders are addressed by extending the length of the upper cam/cam holder 150 in order to provide at least first 153 and second 154 guides being disposed proximate the first 122 and second 123 ends of the extension member 120 and the first 151 and second 152 ends of the upper cam 150, while also providing complementary co-acting first 124 and second 125 inclined surfaces proximate the first and second ends of the extension member.
  • the extended "nose” portion thus becomes integral with the cam slide of the prior art cam slider, thus reducing “overhang” and increasing cam slide accuracy and, therefore, the stamping and/or punching process.
  • extension member 120 may be monolithic or, as in the illustrated embodiment, may be unitary, being comprised, for instance of a separate cam slider in the form of the main body portion 121 and work tool mount 140, the mount being disposed on the main body portion 121 of the cam slide proximate the second end 123.
  • the mounting face 141 is defined on the mount 140.
  • the accuracy and/or precision of the die cam and the work tool e.g., punch device
  • performing the work e.g., punching
  • the blank material sample e.g., the intended location of the punch to be created on the material sample (e.g., metal panel, etc.)
  • improved manufacturing efficiency and/or reduction of manufacturing costs e.g., diminishes or eliminates wasted materials due to inaccurate/imprecise punching, etc.
  • the improved cam slider and work tool design will also accommodate material samples (e.g., metal panel, etc.) having a greater variety of dimensions (e.g., length, width, etc.) or irregular shapes (contours) thereby further enhancing manufacturing efficiency, improving quality, and/or reducing manufacturing costs.
  • material samples e.g., metal panel, etc.
  • a greater variety of dimensions e.g., length, width, etc.
  • irregular shapes e.g., a greater variety of dimensions (e.g., length, width, etc.) or irregular shapes (contours) thereby further enhancing manufacturing efficiency, improving quality, and/or reducing manufacturing costs.
  • FIGS. 7A-7D a progression of side views of the cam slider of the present disclosure in operation is shown. Except as otherwise noted, operation is, in principle, the same as that of the prior art cam slider described in relation to FIGS. 1 -3D.
  • the assembly comprising the upper cam 150 and extension member 120 with work tool 145 descends downward towards the lower cam 110 (FIG. 7A) until the underside, inclined surface of the extension member 150 contacts the top inclined surface 112 of the lower cam 110 (FIG. 7B).
  • co-acting inclined (i.e., cam) first 124,153 and second 125, 154 surfaces of each of the extension member 120 and upper cam 150, respectively, and co-acting inclined (i.e., cam) surfaces 130, 112 of the extension member 120 and lower cam 110, respectively, work to drive the extension member 120 progressively in the direction Di towards a material sample (e.g., panel, metal sheet, etc.) to be processed (e.g., punched, etc.(not shown)), as shown in FIGS. 7C and 7D.
  • a material sample e.g., panel, metal sheet, etc.
  • FIGS. 8A-8D the cam slider unit of FIGS. 1 -3D is shown (FIG. 8A) in comparison with various inventive cam sliders, including that of FIGS. 4-7D (FIG. 8D), so that the relative advantages of the present invention might be better understood.
  • the conventional cam slider unit (FIG. 8A) has a guide and work edge (pierce) distance W that is relatively long, resulting in the previously described, undesirable "overhang.”
  • FIG. 8B the co-acting, inclined cam surface S-i, S 2 of the cam slider and upper cam are extended to further support the cam slide, and the guide and work edge (pierce/punch) distance W, is decreased (shortened).
  • the lower cam/cam driver 10 is extended at 10a' to further support the extend "nose" portion 25'.
  • the extended lower cam 10a' may become obstructed by certain material samples (e.g., panels, etc.) and not extend properly to process (e.g., pierce, punch, etc.) the material sample.
  • the cam slider of the present invention FIG.
  • FIG. 8D includes at least first and second adjacent guides to support the extension member 120 and the guide and work edge (pierce/punch) distance W 4 is shortened, as best show in FIG. 8D.
  • This design decreases the overall height H 4 of the cam slider unit 100, decreases (shortens) the guide and work edge (pierce) distance, as noted, and further eliminate the drawbacks of having a lengthened lower cam 110, as in the case of the embodiment of FIG. 8C.
  • This provides for a more compact and efficient die cam and long nose pierce unit that is more accurate than the traditional, known unit, but will still function within the same packaging envelope of the die tool.
  • FIGS. 9 and 10 there are shown further embodiments of the present invention wherein the overall length of the upper cam and extension member are extended to increase the distance between the lower cam, at one end, and the device/work tool (e.g., punch, pierce, etc.) mounted at the mounting face at the other end.
  • the device/work tool e.g., punch, pierce, etc.
  • such "extended-nose" variants of the present invention may be desirable/necessary where the pierce/punch device or other work tool must necessarily or desirably be disposed a greater distance from the cam driver such as, for instance, to accommodate physical constraints in the operational envelope of the apparatus.
  • each embodiment includes each of an upper cam 150', 150", extension member 120', 120" and lower cam 110', 110" wherein, as heretofore described, at least first 153', 153" and second 154', 154" guides of the upper cam 150', 150" are positioned proximate at least opposite ends of the extension member 120', 120" (i.e., proximate the mounting face and the lower cam) in order to better support the extension member.
  • the "long nose" or “nose-extended” apparatus is characterized by the perpendicular orientation of the mounting face 141 ' and the longitudinal axis X of the extension member 120' (as well as the inclined surface 112' of the lower cam 110', the plane Yi of which is desirably, though not necessarily, oriented perpendicular to the plane of mounting face 141 ').
  • an angle Ai defined by the intersection between the plane of the mounting face 141 ' and the longitudinal axis Xi of the extension member 120' is 90 degrees.
  • This embodiment of the inventive cam slider therefore constitutes, in essence, a straightforward lengthening of the extension member the embodiment of FIGS. 4-7D and, correspondingly, a straightforward lengthening of the upper cam of that embodiment so as to provide the second guide proximate the mounting face end of the extension member, all as shown in FIG. 9.
  • the overall height H 5 of the cam slider unit proximate the mounting face will increase constantly as the length of each of the extension member and upper cam member increases (since, even though the height of the upper cam member does not increase according to the embodiment of FIG. 9, the distance between the upper surface of the upper cam member and lower edge of the mounting face necessarily increases due to the perpendicular orientation of the mounting face relative the longitudinal axis Xi of the extension member). This may be undesirable in circumstances where the physical constraints of the cam slider unit's operating envelope do not provide sufficient space to accommodate the increased height.
  • the "nose- extended" cam slider unit of this embodiment addresses the potential drawbacks of the embodiment of FIG. 9 by orienting the mounting face 141 " so as to be non-perpendicular relative to the longitudinal axis X 2 of the extension member 120".
  • the mounting face 141 " is oriented at the desired angle for accomplishing the desired operation (e.g., punch, pierce, etc.) on the work piece (as shown in FIGS.
  • the orientations of the mounting faces in each embodiment are the same, with the desired perpendicular relationship between the mounting face and the lower cam sliding face Y-i , Y 2 being preserved), while the longitudinal axis X 2 of extension member 120" is oriented along a different axis so that, proximate the mounting face 141 ", the height H 6 measured as the distance between the upper surface of the upper cam member 150" and lower edge of the mounting face 141 " is decreased over the same overall length of the cam slider unit as for the embodiment of FIG. 9.
  • the longitudinal axis X 2 of extension member 120" is oriented at least approximately parallel to the longitudinal axis Z 2 of the upper cam member 150".
  • the term “coupled” means the joining of two components (mechanical and/or electrical) directly or indirectly to one another unless expressly stated otherwise. Such joining may be stationary in nature or movable in nature unless expressly stated otherwise. Such joining may be achieved with the components (electrical or mechanical) and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components or the two components and any additional member being attached to one another unless expressly stated otherwise. Such joining may be permanent in nature or alternatively may be removable of releasable in nature unless expressly stated otherwise.
  • elements shown as integrally formed may be constructed of multiple parts or elements show as multiple elements may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length of width of the structures and/or members or connector or other elements of the system may be varied.
  • the elements and/or assemblies of the system may be constructed from any of a wide variety of material that provide sufficient strength or durability, in any of a wide variety of colors, textures and combinations. Accordingly, all such modifications are intended to be included within the scope of the present innovations. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the preferred and other exemplary embodiments without departing from the spirit of the present innovations.

Abstract

La présente invention a trait à une glissière de came et à un appareil de poinçon, comprenant : une came inférieure ; un élément de prolongement comprenant une partie de corps principal ayant une longueur s'étendant le long d'un axe longitudinal entre des première et seconde extrémités opposées, l'élément de prolongement pouvant être monté de façon mobile sur la came inférieure à proximité de la première extrémité, et se terminant à proximité de la seconde extrémité dans une face de montage afin de supporter un outil de travail ; et une came supérieure ayant une longueur s'étendant le long d'un axe longitudinal entre des première et seconde extrémités opposées, la came supérieure pouvant être montée de façon mobile sur l'élément de prolongement. La came inférieure, la came supérieure et l'élément de prolongement comprennent des surfaces inclinées en coopération les unes avec les autres permettant d'obtenir un mouvement de l'élément de prolongement grâce au mouvement relatif entre la came supérieure et la came inférieure. La came supérieure inclut au moins des premier et second guides montés de façon mobile sur l'élément de prolongement à proximité au moins des première et seconde extrémités de l'élément de prolongement, les premier et second guides, ou plus, étant disposés à proximité au moins des première et seconde extrémités de la came supérieure. Les premier et second guides, ou plus, sont disposés sur des plans qui sont chacun orientés de façon non perpendiculaire par rapport à l'axe longitudinal de l'élément de prolongement.
PCT/US2010/059483 2009-12-08 2010-12-08 Glissière de came et appareil de poinçon WO2011072024A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US26769109P 2009-12-08 2009-12-08
US61/267,691 2009-12-08
US31520710P 2010-03-18 2010-03-18
US61/315,207 2010-03-18

Publications (2)

Publication Number Publication Date
WO2011072024A2 true WO2011072024A2 (fr) 2011-06-16
WO2011072024A3 WO2011072024A3 (fr) 2011-09-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104801596A (zh) * 2015-05-20 2015-07-29 安徽江淮汽车股份有限公司 一种冲孔模具及其斜楔机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099708A (en) * 1991-05-10 1992-03-31 Chung Ming Chin Adjustable rolling cam slider
US20040025561A1 (en) * 2000-10-13 2004-02-12 Harald Weigelt V-belt drive
US20040163440A1 (en) * 2003-02-21 2004-08-26 Masahiro Higuchi Module cam and method for aligning and fastening tool
JP2005103565A (ja) * 2003-09-29 2005-04-21 Sankyo Oilless Industry Inc モジュールカム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099708A (en) * 1991-05-10 1992-03-31 Chung Ming Chin Adjustable rolling cam slider
US20040025561A1 (en) * 2000-10-13 2004-02-12 Harald Weigelt V-belt drive
US20040163440A1 (en) * 2003-02-21 2004-08-26 Masahiro Higuchi Module cam and method for aligning and fastening tool
JP2005103565A (ja) * 2003-09-29 2005-04-21 Sankyo Oilless Industry Inc モジュールカム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104801596A (zh) * 2015-05-20 2015-07-29 安徽江淮汽车股份有限公司 一种冲孔模具及其斜楔机构

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