WO2002076683A1 - Appareil portable de decoupe de pieces multiparois - Google Patents

Appareil portable de decoupe de pieces multiparois Download PDF

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Publication number
WO2002076683A1
WO2002076683A1 PCT/US2002/009023 US0209023W WO02076683A1 WO 2002076683 A1 WO2002076683 A1 WO 2002076683A1 US 0209023 W US0209023 W US 0209023W WO 02076683 A1 WO02076683 A1 WO 02076683A1
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WO
WIPO (PCT)
Prior art keywords
workpiece
assembly
recited
cutting
housing
Prior art date
Application number
PCT/US2002/009023
Other languages
English (en)
Inventor
Wayne C. Fasske
Original Assignee
Shear, Llc
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 Shear, Llc filed Critical Shear, Llc
Publication of WO2002076683A1 publication Critical patent/WO2002076683A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D23/00—Machines or devices for shearing or cutting profiled stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
    • B25H3/006—Storage means specially adapted for one specific hand apparatus, e.g. an electric drill

Definitions

  • the present invention relates to a portable apparatus for cutting sheet-like material, and more particularly, to an apparatus for shearing workpieces which can be easily and safely transported, assembled, and disassembled.
  • Metal framing studs are used in the building industry, and particularly the commercial building industry, for constructing framework and mounting thereto wallboards formed of sheet rock and other types of materials. Although framing studs may be formed in a variety of different shapes and configurations, a common type of stud is formed of metal, and defines a back wall and two parallel side walls forming a generally U-shaped cross section.
  • studs are supplied in standard lengths, and therefore if a non-standard length is required, a standard stud must be trimmed to the desired length. Stud trimming is often performed at job sites by employing a chop saw having an abrasive wheel, disk or like rotatably-driven blade, which is pivotally mounted on a base for movement into and out of engagement with a workpiece.
  • the chop saw blades can wear relatively quickly, particularly when used to cut heavy-gauge workpieces.
  • many chop saws cannot cut through relatively large- width studs with a single cutting stroke, but rather require the stud to be flipped over after cutting through one side, and then cut again in order to cut through its entire width.
  • a typical such machine employs a guillotine-like cutting blade slideably received within a blade gap, and a pair of die plates mounted on opposite sides of the guillotine relative to each other for slideably receiving and supporting the workpiece during a cutting operation.
  • Each die plate defines an aperture which is shaped to conform to the shape of a respective type and size of workpiece for conformably engaging the workpiece.
  • an apparatus for shearing workpieces includes a housing defining an interior and a work surface.
  • a cutting assembly is pivotally coupled to the housing, and pivotable between a storage position located within the interior for storage of the cutting assembly and transport of the apparatus, and a shearing position wherein the cutting assembly is adjacent to and substantially perpendicular to the work surface.
  • the apparatus includes a housing defining an interior and a cutting assembly attached to the housing.
  • the cutting assembly has a first support defining an elongated edge and being engageable with a first side of the workpiece for contacting and supporting the first side of the workpiece along a line defined by the first elongated edge wherein a first section of the first elongated edge adjacent to the workpiece is angled with respect to the line.
  • the cutting assembly also has a second support defining an elongated edge and being engageable with a second side of the workpiece for contacting and supporting the second side of the workpiece, the second support being spaced apart from and facing the first support and defining a channel therebetween for receiving the workpiece, wherein a first section of the first elongated edge adjacent to the workpiece is angled with respect to the line.
  • a blade is slideably received within a gap formed adjacent to the elongated edges of the first and second supports and being movable between a first position spaced away from the workpiece within the channel and a second position in engagement with the workpiece for shearing the workpiece along a line of contact and a base support defines a support surface extending between the elongated edges and being engageable with a third side of the workpiece.
  • An actuator is operatively connected between the cutting assembly and the housing for fixedly moving the cutting assembly between a transport position and a shearing position and a plurality of wheels depending from the housing for transporting the apparatus.
  • FIG. 1 is a perspective view of an apparatus embodying the present invention illustrating the housing in the transport position in accordance with the subject disclosure.
  • FIG. 2 is a perspective view of the apparatus of FIG. 1 illustrating the housing in the open position in accordance with the subject disclosure.
  • FIG. 3 is a perspective view of the apparatus of FIG. 1 illustrating the erection of the cutting head assembly in accordance with the subject disclosure.
  • FIG. 4 is a perspective view of the apparatus of FIG. 1 illustrating the cutting head assembly oriented in the cutting position in accordance with the subject disclosure.
  • FIG. 5 is a perspective view of the apparatus of FIG. 1 illustrating the cover in the closed position and defining the workpiece supporting surface, and illustrating the cutting head assembly in the upstanding cutting position in accordance with the subject disclosure.
  • FIG. 6 is a perspective view of the cutting head assembly in accordance with the subject disclosure.
  • FIG. 7 is a partial cross-sectional view taken along line 7-7 of FIG. 6 with parts removed for clarity in accordance with the subject disclosure.
  • FIG. 8 is a side elevational view with the right support of the frame removed for clarity in accordance with the subject disclosure.
  • FIG. 9 is a partial, front elevational view of another embodiment of the present invention including angled blade supports that are laterally movable in accordance with the subject disclosure.
  • FIG. 10 is a partial, front elevational view of the apparatus of FIG. 9 illustrating in further detail the lubricating components in accordance with the subject disclosure.
  • FIG. 11 is a plan view of the support illustrating the channel for receiving lubricating fluid and an angled surface in accordance with the subject disclosure.
  • FIG. 12 is a front elevational view of another embodiment of a blade wherein the blade includes ejection hooks in accordance with the subject disclosure.
  • FIG. 13 is a side view of an adjustable material stop in accordance with the subject disclosure.
  • an apparatus embodying the present invention is indicated generally by the reference numeral 10.
  • the apparatus 10 comprises a housing 12 including a base 14 and a top 16 pivotally mounted to the base 14.
  • the housing 12 includes a lock 15 for securing the top 16 during transport.
  • a plurality of wheels 18 depend from the base 14 for portability. Additionally, the apparatus can be moved by forklift or boom truck. In the transport position, the closed housing 12 allows employing the apparatus 10 at a job location without excessive difficulty or manpower.
  • the apparatus 10 includes a cutting head assembly 20 pivotally mounted at hinges or pivot joints 22 within an interior 24 of the housing 12.
  • the head assembly 20 comprises a frame 26 including a pair of vertical or upstanding supports 28 spaced laterally relative to each other and pivotally connected to the base 14 by respective hinge supports 30. As can be seen, each hinge support 30 is pivotally mounted to the base 14 by a respective hinge or pivot joint 22.
  • the frame 26 further includes a first laterally- extending or horizontal support 32 extending between the upper portions of the upstanding supports 28 and fixedly secured thereto.
  • a second laterally-extending or horizontal support 34 is spaced below the first support 32 and also extends between and is fixedly secured to the upstanding supports 28.
  • a cutting base assembly 36 is spaced below the second laterally- extending support 34 and is fixedly secured to the lower portions of the upstanding supports 28.
  • a typical cutting head assembly 20 may weigh 300 pounds.
  • An actuator 38 is drivingly connected between the frame 26 and the base 14. As shown in FIGS. 2 through 5, the actuator 38 is actuated to pivotally move the cutting head assembly 20 between a storage position and a cutting position for easy set up. As shown in FIGS. 1 and 2, the cutting head assembly 20 is located in the storage position contained within the interior 24 of the base 14. Then, upon opening the cover 16 into the position shown in FIG. 2, the actuator 38 may be actuated to drive the cutting head assembly 20 upwardly, as indicated by the arrow A in FIGS. 2, 3 and 4, into the cutting position of FIG. 5.
  • springs are attached to the cutting head assembly 20 to counterbalance the weight and allow manual rotation of the head assembly 20 between the storage and operating positions.
  • the base 14 defines a stop surface 41 that engages the supports 30 to erect the cutting head assembly 20 in an upstanding cutting position.
  • the cover 16 Upon moving the cutting head assembly 20 into the upstanding cutting position of FIG. 5, the cover 16 is closed, and the upper surface 40 of the cover 16 defines a planar work-supporting surface for supporting the workpieces (not shown) to be fed, or being fed through the cutting head assembly 20.
  • a sheet 42 of suitable material such as steel, is fixedly secured, such as by screws or other fasteners, to the top side of the cover 16 to form a durable, replaceable workpiece supporting surface.
  • the sheet 42 is heavy gauge diamond plate aluminum.
  • the sheet 42 includes ruled marks for allowing the user to measure the workpieces. Referring now to Figure 13, preferably an adjustable material stop 180 is provided.
  • the adjustable material stop 180 includes a pipe 182 for securing a linear member 184 a desired distance from the cutting head assembly 20.
  • the linear member 184 provides a reference surface for allowing repeated cuts of workpieces to the desired length.
  • the pipe removably engages the cutting head assembly 20 to allow for removal during transport.
  • the components of the adjustable material stop 180 are securely stored within the housing 18 during transport but it will be appreciated by those skilled in the art that the pipe 182 may be of any desired length.
  • the pipe extends along the top 16 parallel to the elongated workpiece.
  • the linear member 184 slidingly attaches to the pipe 182 at any desired location.
  • a V-shaped cradle 186 couples the linear member 184 to the pipe 182.
  • the N- shaped cradle 186 forms a triangle with an end of the linear member 184 and the pipe 182 easily slides through such triangle.
  • a locking bolt 188 passes through a threaded hole 190 in the linear member to frictionally engage the pipe 182 and fix the adjustable material stop 180 thereto.
  • a blade actuator 43 is located slightly under the housing 12 to insure against accidental activation and remote from the cutting head assembly 20 in the cutting position to insure the operator is at a safe distance during operation.
  • the blade actuator 43 is a foot stirrup design.
  • the blade actuator 43 is a remote control which activates the cutting head assembly 20 by infra-red signal as would be known to those skilled in the pertinent art.
  • the blade actuator 43 is a push-button switch connected to the apparatus 10 by an electrical cable.
  • a console 47 contains an emergency off push-button switch.
  • the console 47 also includes a keyed ignition for starting the motor assembly 44, an automatic cut counter and warning lights for the oil pressure, alternator and the like.
  • the console 47 also includes an hour meter for tracking the hours of operation to notify the user that a portable energy source, such as a battery recharge, may be required.
  • a portable energy source such as a battery recharge
  • the portable energy source may be gasoline, a solar cell and the like as would be appreciated by those of ordinary skill in the pertinent art upon review of the subject disclosure.
  • FIG. A and the actuator 38 is operated to pivotally drive the cutting head assembly 20 back into the enclosure of the base 14, as illustrated in FIGS. 2 through 4. Then, upon moving the cutting head assembly 20 into the storage position of FIG.2, the cover 16 is moved into the closed position of FIG. 1, and the apparatus 10 may then be moved for storage or transported to another j ob site .
  • the actuator 38 is in the form of a hydraulic cylinder.
  • the actuator may take the form of any of numerous different actuating mechanisms that are currently or later become known for performing the functions of the actuator described herein, such as a pneumatic cylinder, an electric motor or other type of motor, with or without a suitable gear train or linkage mechanism.
  • the base 14 includes a motor housing 44 containing a motor (not shown) for driving a pump for the hydraulic components or otherwise for driving the various components of the apparatus 10.
  • the motor is gasoline powered to allow the apparatus to be operated at job sites without electricity.
  • any of numerous different types of drive sources that are currently or later become known for performing the functions of the motor may be equally employed, such as an electric motor.
  • the base assembly 36 of the cutting head assembly 20 includes a first base support 46 and a second base support 48, each of which define an elongated edge separated by, as shown in FIG. 8, a blade gap 50. As shown in FIG.
  • a first support 52 is movably mounted on one side of the first and second base supports 46 and 48, respectively, and a second support 54 is movably mounted on the opposite side of the first and second base supports.
  • the support 52 defines two first support surfaces 56 for engaging a first side of a workpiece (not shown), and the second support 54 defines two second support surfaces 58 for engaging a second side of the workpiece.
  • Each base support 46 and 48 similarly defines a third support surface 60 extending between the first and second support surfaces 56 and 58, respectively, for engaging and supporting a third side of the workpiece.
  • the first support surfaces 56 are spaced apart from and face the second support surfaces 58, thus defining a channel 62 therebetween for receiving the workpiece.
  • At least one of the first and second support surfaces 56 and 58, respectively, is movable relative to the support surface on the opposite side of the channel 62 for adjusting the width "A" of the channel to thereby engage with each support surface the respective sides of workpieces of different widths.
  • the first support 52 may be composed of a suitable metal and comprises a pair of upstanding members 64 that are interconnected or secured together via fasteners 66.
  • the upstanding members 64 are disposed about a shim 68 which, as shown in FIG. 7, defines a thickness (t) of a blade gap 50. It will be appreciated that the thickness (t) of the shim may be varied depending on the size of a shearing means or blade 70.
  • the shim 68 may be formed from a piece of metallic flat stock having a generally rectangular outer configuration and may comprise apertures (not shown) wherethrough the fasteners 66 may extend. As shown in FIGS. 6 and 8, the shim 68 terminates in a locking device 72 which may include a threaded rod 74 connected thereto by suitable means, such as welding. A nut 76 may be employed for securing the first support 52 into engagement with the first and second base supports 46 and 48. As further shown in FIG. 8, each locking device 72 defines a slot 80 for receiving therein the lower end of the shim 68 fixedly secured to the threaded rod 74. The slot 80 is generally an elongated rectangular channel.
  • a pair of coupling members 82 and 84 are employed that may be connected via fasteners 86 to the base supports 46 and 48.
  • a pair of second base members 88 and 90 are disposed on the base members 46 and 48, respectively, and together comprise the third support surface 60.
  • the base members 88 and 90 are secured to the shim 68 via, e.g., set screws 92, each located on a respective coupling member 82 and 84, to thereby define the width of the blade gap 50 extending through the third support surface 60 and to secure the base members in place. As shown typically in FIG.
  • a portion 94 of the first support surface 56 may be angled at an acute angle, preferably approximately 45°, relative to the plane defined by the blade 70 in order to provide for angular cuts as described in the above-mentioned co-pending patent application.
  • the second support surface 58 preferably comprises another angled portion 94 located diagonally opposite from that of the corresponding angled portion 94 on the first support surface, such that a workpiece may be accommodated for an angular cut.
  • the portions 94 may be angled at any particular angle in order to accommodate a variety of workpiece shapes and to permit a predetermined range of angular cuts to be made. It also will be recognized that four angular surface portions, rather than two, may be employed.
  • a segment 96 of the each support 52 and 54 may be separately movable therefrom.
  • a slot 98 is formed in the segment wherethrough the respective fastener 66 is disposed.
  • each segment 96 may be moved laterally relative to the remainder of the support 52 or 54 and then locked in a selected position by adjusting the respective fastener 66..
  • the blade 70 comprises a support flange 100 affixed by, e.g., fasteners 102, to the blade.
  • the blade 70 includes detents (not shown) corresponding in position to each of the fasteners 102 to locate the position of the blade in the support flange.
  • the blade defines a recess 103 (FIG. 10) in its upper edge, and a locating pin 104 extending through the flange is received within the recess in the upper edge of the blade to further locate the blade in the flange.
  • the blade 70 is generally planar and has a transverse axis that is generally parallel to the longitudinal axis of the support flange 100.
  • the blade 70 includes a cutting edge 106 that comprises multiple planar surfaces 108, 110, 112, and 114 each of which comprises cutting side edges on the front and back sides of the blade.
  • the surfaces 108, 110, 112, and 114 are illustrated as planar, although, it will be appreciated that a serration or relatively small teeth may be disposed on the surface.
  • Each surface is separated by cutting tips 116, 118 and 120. It will be recognized that while three cutting tips are preferable, additional cutting tips such as five or seven may be employed.
  • the multiple surface and cutting tip configuration of this embodiment of the cutting blade functions to apply additional pressure adjacent to each of the cutting tips 116, 118 and 120 beyond that of the surfaces 108, 110, 112, and 114 for puncturing, cutting and/or creating multiple fractures through a workpiece.
  • cutting tips 116 and 120 are advantageously located such that they may act to puncture and shear the outer flanges of a workpiece (not shown).
  • This multi-tip structure has been found to be particularly advantageous since the outer flanges are supported at only one end and thus may tend to bend rather than be cut when less than three cutting tips are employed.
  • Each of the tips 116, 118 and 120 is formed by the intersection of planes defined by surfaces 108, 110, 112, and 114, respectively.
  • the intersection of such planes defines angles A, B, C, and D as shown in Figure 9.
  • the secondary angles C and D are preferably substantially the same and are greater than the primary angles A and B, and may be within the range of between approximately 45° and approximately 75°, and in the illustrated embodiment, are approximately 60°.
  • the primary angles A and B may be within the range of approximately 15° and approximately 45°, and in the illustrated embodiment is approximately 30°.
  • the greater the secondary angles the less cutting force (or hydraulic pressure) required to cut the workpieces.
  • One advantage of the compound cutting blade 70 of the present disclosure is that it permits a more compact head assembly 20 in comparison to one employing only two cutting edges, and thereby allows a shorter cutting stroke of the blade 70.
  • a blade drive 122 is mounted between the first and second laterally-extending supports 32 and 34, respectively, and is drivingly connected to the support flange 100 of the blade 70 to drive the blade upwardly and downwardly through the blade gap 50 to cut the workpieces.
  • the blade drive 122 is in the form of a hydraulic cylinder.
  • the actuator may take the form of any of numerous different actuating mechanisms that are currently or later become known for performing the functions of the actuator described herein, such as a pneumatic cylinder, an electric motor or other type of motor, with or without a suitable gear train or linkage mechanism.
  • An upper mounting plate 124 secures the upper end of the actuator 122 to the first laterally-extending support 32.
  • a pair of jack bolts 126 (only one shown) are mounted on the upper side of the mounted plate 124 such that the free ends of the bolts 126 engage the adjacent wall of the laterally-extending support 32. As indicated by the arrows in FIG. 6, the jack bolts 126 are adjusted to, in turn, adjust the position of the actuator 122 and thereby move the blade 70 forward or backwards for alignment of the blade.
  • a plurality of secondary jack bolts 128 are each mounted on a respective side at the base of the actuator 122 for engaging the adjacent face of a base plate 130 of the actuator.
  • the secondary jack bolts 128 are adjusted to, in turn, adjust the final position of the actuator and thus of the blade within the blade gap.
  • a shaft 123 of the cylinder 122 is secured to the support flange 100 to drivingly connect the blade to the actuator.
  • the shaft 123 is rotatable within the cylinder thus converting the pivotal adjustment of the jack bolts in the forward and backward movement of the blade within the blade gap.
  • each support surface 56 and 58 are angled inwardly at an acute angle "E".
  • the base portions 132 is provided to allow the workpiece to flex outwardly upon cutting the workpiece with the blade 70.
  • the cutting position of the blade 70 shifts laterally along the cutting edge of the blade 70 as the blade 70 moves downwardly through the workpiece and the sides of the workpiece flex outwardly toward the base portion 132.
  • a significant advantage of base portions 132 is to allow for significantly improved blade life since a greater surface area of the blade 70 is being used to cut, for example, the upstanding flanges on metal building studs or like workpieces.
  • base portions 132 Another advantage of the base portions 132 is to allow for a smoother finish on the cut surfaces of the workpieces. Yet another advantage of the base portions 132 is that it provides a wider channel 62 in the vicinity of the workpiece, and thereby facilitates insertion of the workpieces into the apparatus 10 and removal of the workpieces therefrom.
  • the angle E is determined to provide inward travel of a distance 133 for each vertical displacement distance 135 of the blade 70.
  • the inward travel distance 133 is approximately 1/4 inch, the vertical displacement 135 would be approximately 3 inches.
  • the angle E may be any of numerous different angles depending, for example, on the shape and/or size of the workpieces, or the material from which the workpieces are made.
  • the space between the adjacent sides of the workpiece and the base portion 132 is preferably within the range of flexibility of the workpiece without causing permanent deformation of the workpiece.
  • the cutting head assembly 20 comprises a gravity feed oiling system including a pair of oil reservoirs 134 (only one shown), each mounted on the second laterally-extending support 34 over a respective support 52 or 56 and filled with a suitable lubricating oil or other liquid for lubricating the respective side of the blade 70.
  • each support 64 defines a respective elongated channel 136 thereby forming a fluid conduit extending between the oil reservoir 134 and the portion of the blade gap formed between the respective supports 64.
  • An inlet hole 138 is also formed in the opposing surfaces of the supports 64 to thereby define an inlet conduit connected in fluid communication between the oil reservoir 134 and channel 138.
  • a second reservoir 140 is formed at the junction of the inlet channel 138 and elongated channel 136 and may be formed by a round hole in each support 64.
  • the oil is released by gravity from the reservoir 134 into the inlet channel 138 and second reservoir 140, and in turn flows by capillary action through the elongated channel 136 and onto the surfaces of the blade 70 received within the portion of the blade gap 50 formed between the opposing plates 64.
  • the oil effectively lubricates the marginal portions "E" of the blade 70 and thereby ensures adequate lubrication of the cutting surfaces of the blade 70 (i.e., the surfaces cutting the upstanding flanges of the metal framing studs or like workpieces).
  • the surface 132 may define a chamfer 142 to prevent chipping.
  • the workpiece is located in the channel 62 and the first and second supports 56 and 58 may be moved into engagement therewith after loosening of nuts 76.
  • threaded rods 144 with adjustment wheels 146 may extend through the upstanding supports 28 and engage the supports 56 and 58 to laterally adjust the supports by rotation of the wheels and rods.
  • the blade 70 driven by the drive actuator 122, may then puncture and shear the workpiece by driving the blade downwardly through the workpiece and then returning the blade to the non- cutting position, as shown in FIG. 6.
  • the lower fasteners 66 in FIG. 9 may be loosened and segment 96 may be moved laterally to engage a side of the workpiece.
  • the shims 68 located between the upstanding members 64 may be replaced, e.g. depending upon a thickness ( ) of the blade 70 as described above, via removal of the fasteners 66 and nut 76 and loosening of set screws 92 of the base members 88 and 90.
  • the base assembly 36 may be provided with indicia indicating the width of the channel 62 and the locking members 72 likewise may be provided with pointers for aligning the locking members with the desired measured indicia to thereby precisely set the width A of the channel.
  • another preferred blade 230 of the cutting head assembly 20 is generally planar and has a transverse axis that is generally parallel to the longitudinal axis of the support flange 234.
  • the blade 230 includes a cutting surface 260 that comprises multiple planar segments 262, 264, 266 and 268.
  • the segments 262, 264, 266 and 268 are illustrated as planar, although, it will be appreciated that a serration or teeth may be disposed on the surface thereof.
  • the segments 262, 264, 266 and 268 are separated by cutting tips 270, 272 and 274. It will be recognized that while three cutting tips are preferable, additional cutting tips such as five or seven may be employed by creating additional segments.
  • the blade 230 shears a workpiece (not shown)
  • a portion or slug approximately the width of the blade 230 is removed from the workpiece.
  • the slug remains in the blade gap 50.
  • the slugs may collect in the blade gap 50 to prevent further operation of the cutting head assembly 20.
  • Each ejection hook 280 forms a cavity 282 defined by a linear portion 284, a rounded portion 286 and a point 288.
  • the points 288 of the ejection hooks 280 are rounded.
  • the rounded portions 286 of the ejection hooks 280 are a flat line. Such a flat line portion may be parallel to the transverse axis or at an angle as would be appreciated by those of ordinary skill in the art upon review of the subject disclosure.
  • the ejection hooks 280 force the slugs out of the cutting path, thereby preventing interference during subsequent shearing action.
  • the cutting head assembly may include a blade with ejection hooks, supports with angled base portions, a fluid conduit and combinations thereof.
  • the housing may include handles, locking casters, low friction pads, a combination thereof and the like to facilitate movement.
  • the apparatus may contain a drill press, miter box, or nay like power equipment for storage within the housing and use with a work surface defined by the housing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)

Abstract

L'invention concerne un appareil portable de découpe de pièces pourvu d'un logement (12) définissant un intérieur (24) destiné à loger un ensemble tête de coupe (20) lors du stockage. Lors de l'emploi, un actionneur (38) met la tête de coupe en position de fonctionnement, le couvercle (16) du logement définissant une surface de travail plane contiguë à la tête de coupe qui lui est fixée. L'appareil portable comprend un bloc d'alimentation (44) portable destiné au fonctionnement à distance.
PCT/US2002/009023 2001-03-23 2002-03-22 Appareil portable de decoupe de pieces multiparois WO2002076683A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US27809401P 2001-03-23 2001-03-23
US60/278,094 2001-03-23
US33770001P 2001-11-06 2001-11-06
US60/337,700 2001-11-06

Publications (1)

Publication Number Publication Date
WO2002076683A1 true WO2002076683A1 (fr) 2002-10-03

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Application Number Title Priority Date Filing Date
PCT/US2002/009023 WO2002076683A1 (fr) 2001-03-23 2002-03-22 Appareil portable de decoupe de pieces multiparois

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101878956A (zh) * 2010-06-21 2010-11-10 季庆 移动式小型烟支、滤棒分析切割装置
US11072029B2 (en) * 2017-11-17 2021-07-27 Greenlee Tools, Inc. Assembly for supporting and shearing a workpiece

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465114A (en) * 1982-08-27 1984-08-14 Schumacher Robert C Woodworking bench
US4827819A (en) * 1986-12-16 1989-05-09 Black & Decker Inc. Storable radial arm saw
US5437319A (en) * 1992-08-28 1995-08-01 Black & Decker Inc. Pivoting power tool with table

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465114A (en) * 1982-08-27 1984-08-14 Schumacher Robert C Woodworking bench
US4827819A (en) * 1986-12-16 1989-05-09 Black & Decker Inc. Storable radial arm saw
US5437319A (en) * 1992-08-28 1995-08-01 Black & Decker Inc. Pivoting power tool with table

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101878956A (zh) * 2010-06-21 2010-11-10 季庆 移动式小型烟支、滤棒分析切割装置
CN101878956B (zh) * 2010-06-21 2012-10-24 季庆 移动式小型烟支、滤棒分析切割装置
US11072029B2 (en) * 2017-11-17 2021-07-27 Greenlee Tools, Inc. Assembly for supporting and shearing a workpiece
USD1003957S1 (en) 2017-11-17 2023-11-07 Greenlee Tools, Inc. Die for shearing a workpiece
US12036618B2 (en) 2017-11-17 2024-07-16 Greenlee Tools, Inc. Workpiece shearing apparatus

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