US3890862A - Apparatus for shearing the edges of a sheet of metal - Google Patents

Apparatus for shearing the edges of a sheet of metal Download PDF

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Publication number
US3890862A
US3890862A US403022A US40302273A US3890862A US 3890862 A US3890862 A US 3890862A US 403022 A US403022 A US 403022A US 40302273 A US40302273 A US 40302273A US 3890862 A US3890862 A US 3890862A
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United States
Prior art keywords
sheet
edge
cutting line
carriage
shears
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Expired - Lifetime
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US403022A
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English (en)
Inventor
Bernard Lhenry
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Creusot Loire SA
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Creusot Loire SA
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    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material
    • 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
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B23D31/04—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines for trimming stock combined with devices for shredding scrap
    • 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
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/10—Stops for positioning work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • Y10T83/051—Relative to same tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/145—Including means to monitor product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/162—With control means responsive to replaceable or selectable information program
    • Y10T83/173—Arithmetically determined program
    • Y10T83/175—With condition sensor
    • Y10T83/178—Responsive to work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/531—With plural work-sensing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/536—Movement of work controlled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y10T83/6545—With means to guide work-carrier in nonrectilinear path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6579—With means to press work to work-carrier

Definitions

  • ABSTRACT A method of and apparatus for shearing the edges of a sheet of metal in which a sheet is positioned with its longitudinal axis effectively parallel to the cutting line of shears, the sheet is moved towards the cutting line, that edge of the sheet adjacent the shears is cut, the sheet is rotated through 180 about an axis parallel to the cutting line and the other edge of the sheet is moved towards and cut by the shears, wherein the sheet is initially positioned relative to the shears in dependence on the deviation of the edges to be cut from linearity, the deviations being calculated using detectors which detect the positions of the edges adjacent and remote from the cutting line as the sheet is moved towards the shears.
  • the present invention relates to a method of and apparatus for automatic shearing of the edges of a sheet, particularly of metal, for providing a sheet with parallel edges.
  • a method of shearing the edges of a sheet of comprising:
  • a method of shearing the edges of sheet comprising:
  • edge adjacent the cutting line passes inter mediate references situated at a distance r from the cutting line and to one side of the intermediate point, measuring, with respect to the reference line, the distance of the extreme points e and e,
  • apparatus for shearing the edges of a sheet comprising:
  • the apparatus comprises:
  • detectors for detecting the passage of the edge of a sheet adjacent the cutting line, situated equidistantly from the cutting line in the direction of motion of a carrier
  • detectors mounted on the gripping means and operable by that edge of a sheet remote from the cutting line for controlling advance of the carriers
  • a numerical control unit for controlling positioning of the carriers according to signals from the coders and detectors, and the desired width of the sheet.
  • the method and apparatus may, for example, be used for cutting off the edges of a metallic sheet with rough edges, after laminating and heat treatment. They may also be used for cutting off a part of any material.
  • FIG. I is a plan view of an apparatus according to the invention.
  • FIG. 2 is a section on the line A-A of FIG. 1;
  • FIG. 3 is a section on the line B-B of FIG. 1;
  • FIG. 4 is a section on the line CC of FIG. 1;
  • FIGS. 5 to 9 illustrate different stages of operation of the apparatus of FIG. 1;
  • FIG. 10 illustrates diagramatically a first method in accordance with the invention
  • FIG. 11 illustrates diagramatically a second method in accordance with the invention.
  • FIG. 12 shows a simplified diagram of the control assembly of the apparatus of FIG. 1.
  • the apparatus comprises a sheet metal support table 8 formed by rollers 81 arranged with their axes horizontal, and a shearer 7 arranged laterally with respect to the table 8.
  • the shearer for cutting the edge of a sheet, comprises a cutter 71 which is movable along cutting line 72, and a pressure plate 73 which presses the sheet to be cut against table 74.
  • the roller table 8, which the sheet parallel to the cutting line 72, can be connected with a feed table with rollers on the supply side and with a removal table with rollers on the output side.
  • the rollers 81 are driven by motors 82.
  • the sheet can be displaced perpendicularly to the cutting line 72 by positioning assemblies 1, 2, 3 and 4.
  • the positioning assemblies 1, 2, 3 and 4 each comprise a carrier 11, 21, 31, 41 movable along and guided by a slider extending parallel to the rollers 81, and gripping means or spike 12, 22, 32, 42 extending towards the shearer 7.
  • the positioning assemblies 1, 2, 3, 4 each include a driving motor 161, 261, 361 and 461, which ensure movement parallel to the rollers 81.
  • Each of the motors 161, 261, 361, 461 drive a respective carrier through a pinion 18, 28, 38, 48 engaging with a transverse rack 15, 25, 35, 45, fixed to the framework of the table 8 (FIG. 5).
  • the motors drive coders 17, 27, 37, 47 respectively which mark or indicate the position of the respective assembly with respect to the cutting line 72.
  • Each of the spikes 12, 22, 32, 42 is provided with a contact 131, 231, 331, 431 respectively, which on making contact in the open position with the sheet metal, controls the pressure and grasp of the edges of the sheet by a jack not shown.
  • each of these feed assemblies is provided through a guide cable such as 28'.
  • the displacement in a transverse direction of the sheet metal by the feed assemblies is facilitated by roller elements 83 which are arranged with their axes parallel to the cutting line and are vertically movable under the action of hydraulic jacks controlled by electric valves, the roller elements lifting the sheet metal above the rollers 81.
  • Each spike is vertically movable with respect to its carriage so as to come to the level of the roller element 83.
  • the sheet is turned through 180 by turning means 14 comprising open ended ducts 144 connected to a vacuum pump and carried on beams 143 which are pivotable through 180 about a horizontal axis under the action of a rotary jack.
  • the pivotable beams 143 are mounted at the end of horizontal arms 142 fixed on a cross-piece 145 extending parallel to the cutting line 72 and fixed to two lateral carriers 141 adjustable vertically along two lateral columns 146. Pivoting of the beams 143 is effected when the arms 142 ofthe assembly are in a raised position at a height H above the table 8 which is at least equal to half the maximum width of a sheet of metal.
  • the operator energises the motors 82 of the roller table 8 and of the associated table on the feed side to feed a sheet P on to the table 8.
  • the feed side table stops and table 8 goes into reverse, the sheet metal returning towards the stop.
  • table 8 stops.
  • the sheet P is then correctly positioned for entry under the shears of the shearer.
  • the operator selects, depending on the length of the sheet P, which of the spikes 22, 32 or 42 to use to grip the sheet, spike 11 on the feed side always being used.
  • the required width of metal to be obtained is then introduced into the numerical control and the operator starts the automatic operating cycle.
  • the roller elements 83 rise and lift the sheet metal above the rollers 81 of the table 8.
  • the electric control valves of control jacks for the spikes are adjusted and the spikes rise accordingly.
  • Spike l2 and the selected spike advance towards the sheet P, slow down as they approach and engage the edge of the sheet, spikes l2 and spike 42 engaging the sheet at the points e and e of the edge II remote from the cutting line 72.
  • the two spikes then take up position parallel to the cutting line 72 at a distance therefrom equal to the desired width, increased by a guard distance.
  • Spikes 22 and 32 then return to their initial positions.
  • the extreme spikes l2 and 42 then move the sheet forward, and sheet edge I actuates in passing, in the position shown by the full lines in FIG. 6, detectors l9 and 49 which serve as reference for the calculation of the dimensions.
  • the values given by the coders 17 and 47, E and H respectively, are retained in the memory.
  • Sheet P continues to advance and, if the edge is concave, it actuates detectors 29 and 29 in the position shown by the dotted lines in FIG. 6. At this time, the values of the codes 17 and 47 with respect to the cutting line 72 are F and G respectively.
  • the widths of the uncut sheet to the right of the two extreme points e and e are first calculated. These true widths L and L, to the left of the extreme contact points e and e, are determined by subtracting the value r (distance between the cutting line and the detectors) from the distances E and H respectively.
  • the edge differences are defined to the right of the intermediate spikes. They are shown in FIG. 10 and in Table l below.
  • the roller elements 83 and the end spikes 12 and'42 rise again.
  • the selected spikes l2 and 42 again advance towards the sheet P and close (FIG. 8). They move the sheet P forward until the cut edge I ispositioned at a distance equal to the final width T from the cutting line 72.
  • the roller elements 83 drop downwards and edge ll is cut in the same way as edge 1.
  • the roller elements 83 raise the sheet which is then drawn back by spikes 12 and 42, in such a manner as to be released from the shears and to be positioned for removal.
  • Spikes l2 and 42 then open and move backwards at the end of the return stroke.
  • Roller elements 83 retract to rest the sheet on the roller table 8. The sheet can then be removed.
  • the spikes l2 and 42 draw back so that the axis of the'sheet coincides with the axis of the turner l4 (FlGfSl.
  • the extent of withdrawal of spikes 12, 42, calculated by, the numerical control, is equal to the distance d between the axis of the turner and the cutting line 72, less half the final width of the sheet.
  • the distance (I must be sufficiently larger than the value of half the maximum width in order to release thesheet from the shears.
  • spikes l2 and 42 open to release the sheet and withdraw at th'eend of the return stroke.
  • the roller elements 83 drop down again and rest the sheet on the rollers of table 8. The return cycle is carried out whilst the treme spikes l2 and 22 when edge I passes over the detectors 19 and 29.
  • the edge differences are de fined to the right of the intermediate spikes.
  • the edge differences can be defined with reference to the medium axis between the displacement axes of the extreme spikes.
  • the extreme spikes are positioned parallel to the cutting line (FIG. 5) and the intermediate spikes come into contact with edge II.
  • the differences at the middle of edge [I can then be calculated starting from the determined distances A, B, C, D, of the coders and distances between carrier axes given on H0. 11.
  • the sheet then moves forward to determine the distances E, H, on passing by the extreme detectors 19 and 49, and F, G, on passing by the intermediate detectors 29, 39. Table ll below gives the values of the differences at the middle of the sides.
  • the control head of the apparatus is shown in summary form in H6. 12. It comprises an automation unit 6 with a programmer ensuring operation in correct sequence of the motors of the apparatus, and a numerical control unit which ensures positioning of the spikes, in accordance with one of the above methods, as a function of the dimensions of the original sheet, the edge differences and the desired width of the sheet.
  • the automatic cycle is effected by a step-by-step programmer 9.
  • a housing carrying cams moves by successive steps in front of a series of contacts which control either the electric valves controlling the different jacks, or a series of contacts 52 each one controlling a positioning sequence by the numerical control 5.
  • the housing is caused to pass from one position to the next by closure of the position contacts of the automation unit which establishes the end of the sequence in question or by a signal of completed positioning given by the numerical control.
  • the cycle is started by operation of a switch 61, the automation 6 introducing into the numerical controls the necessary orders via contacts 53.
  • contacts 132, 232, 332 and 432 are adjusted and commence the slowing down of the spikes by contacts 541, 551, 561, 571.
  • contacts 131, 231, 331, 431, are pushed in.
  • Contacts 542, 552, 562, 572 are adjusted and control the stopping of the oscillators.
  • Variable frequency impulses are transmitted in an automatic cycle from the numerical control towards the inputs of the translators 162, 262, 362, 462 which control the hydro-electric motors 161, 261, 361, 461.
  • the translators ensure the automatic operation of the hydro-electric motors by interpreting the impulses emitted by the oscillators of the numerical control. They also permit control of the motors under manual operation, starting from the impulses emitted from their internal oscillators.
  • the numerical control unit For each positioning sequence, the numerical control unit, using the desired width introduced by printer 51, the values provided by the codes 17, 27, 37, 47 and the signals coming from the detectors 19, 29, 39, 49, calculates a position to be reached.
  • the impulses transmitted to the inputs before or after the control transla- 6 tors of the motors of the extreme carriages are provided gy a multi-stage frequency oscillator. Knowing the position to be reached and the coder position at any instant, the numerical control determines the instant distance to go and compares it with a range of speeds which are predetermined and introduced into the memory. When the distance to go is greater than all of this range, the oscillator operates at the highest frequency corresponding to the highest motor speed. When the distance to go becomes less than the first level, the oscillator operates at a lower frequency, etc.
  • the impulses are cut down at 1 mm from the position to be reached so as to allow for the lag of the hydro-electric motor.
  • the above described method and apparatus enable a user to obtain a sheet with opposite edges parallel, with a predetermined width; it is possible to effect automatic shearing of a piece of sheet metal with sides altered over a great length in either a concave or convex manner.
  • Apparatus for shearing the edges of a sheet comprising:
  • At least one carriage guided for movement in a direction perpendicular to the cutting line, means for gripping an edge of a sheet, the gripping means being mounted at an extremity of at least one carriage on that side adjacent the shears,
  • detectors for detecting the passage of the edge of a sheet adjacent the cutting line each situated at an equal direction from the cutting line in the direction of displacement of a carriage, detectors mounted at the end nearest to the shears of each carriage operably by the edge of a sheet remote from the cutting line for controlling the advance of the carriage in relation to the said edge,
  • the rotating means comprises a plurality of horizontal arms fixed to a member which is vertically movable and each provided at its extremity with a pivotable sheet gripping means.
  • the table comprises roller elements for displacement of the sheet perpendicularly to the cutting line, motor means for vertical moving of said roller elements between a low position under the table and a raised position above the table, and motor means for vertical moving of said gripping means.
  • the table comprises roller elements for displacement of the sheet in a direction parallel to the cutting line, motor driving means for said roller elements, and means to control said motor driving means as a function of the position of the sheet in said direction.
  • Apparatus in accordance with claim 3, comprising:
  • a numerical control unit for positioning each carriage as a function of the signals from at least one coder and of the final width of the sheet and for causing the change of sequence of the sequential automated control.
  • Apparatus in accordance with claim 1, comprising:
  • a numerical control unit for positioning each carriage as a function of the signals from at least one coder and of the final width of the sheet.
  • Apparatus in accordance with claim 1, comprising:
  • a numerical control unit for positioning each carriage as a function of the signals from at least one coder and of the final width of the sheet and for causing a change of sequence of the sequential automated control.
  • the numerical control unit comprises means for calculating at least a value of the departure from linearity of the edge of the sheet adjacent the cutting line and at least a value of the departure from linearityy of the edge of the sheet remote from the cutting line.
  • Apparatus in accordance with claim 7, wherein the sequential automated control comprises means for selecting the number of gripping means in operation according to the length of the sheet.
  • the sequential automated control comprises means for driving the advanced of the two extreme carriages selected and for driving the gripping means of the said carriages and means for driving the advance of each intermediate carriage as far as the edge, remote from the cutting line.
  • the numerical control unit comprises means to calculate the width at each extremity of the sheet as a function of the signal of each extreme coder when a signal is given by an extreme detector for detecting the passage of the edge of a sheet adjacent the cutting line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Shearing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)
US403022A 1972-10-26 1973-10-03 Apparatus for shearing the edges of a sheet of metal Expired - Lifetime US3890862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7238005A FR2204986A5 (ja) 1972-10-26 1972-10-26

Publications (1)

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US3890862A true US3890862A (en) 1975-06-24

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US403022A Expired - Lifetime US3890862A (en) 1972-10-26 1973-10-03 Apparatus for shearing the edges of a sheet of metal

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US (1) US3890862A (ja)
JP (1) JPS504687A (ja)
AT (1) AT344484B (ja)
BE (1) BE806577A (ja)
DE (1) DE2352648A1 (ja)
FR (1) FR2204986A5 (ja)
GB (1) GB1447688A (ja)
IT (1) IT996846B (ja)
SE (1) SE402411B (ja)
ZA (1) ZA738024B (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400406A1 (fr) * 1977-07-20 1979-03-16 Haemmerle Ag Procede pour positionner des pieces en forme de plaques par rapport a un poste de travail, et dispositif pour la mise en oeuvre du procede
US4186310A (en) * 1978-06-19 1980-01-29 Maxey Carl W Automatic wane detector
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4628578A (en) * 1983-08-19 1986-12-16 Kabushiki Kaisha Komatsu Seisakusho Method and apparatus for automatic punching
US5117717A (en) * 1990-12-18 1992-06-02 Oscar Mayer Foods Corporation On-weight slicing system
US5381342A (en) * 1992-02-15 1995-01-10 Bwg Bergwerk- Und Walzwerk- Maschinenbau Gmbh System for trimming a continuously moving metal strip
US6546834B1 (en) * 1997-12-24 2003-04-15 Giben Impianti S.P.A. Method and machine for sawing panels with laterally movable pusher
US20120234144A1 (en) * 2011-03-17 2012-09-20 Tormoen Craig C Methods for sheet registration and shearing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005801A1 (en) * 1978-05-25 1979-12-12 Hitachi Metals, Ltd. Microwave ferrite component
DE3021826A1 (de) * 1980-06-11 1981-12-17 Schloemann-Siemag AG, 4000 Düsseldorf Ausricht- und messvorrichtung fuer walzbleche
FR2670419B1 (fr) * 1990-12-18 1997-04-30 Gts Ind Procede et dispositif de positionnement d'une tole dans une installation de traitement en ligne.
CN110369783B (zh) * 2019-07-05 2023-08-18 江苏扬力数控机床有限公司 一种全自动割管机
CN110369782B (zh) * 2019-07-05 2023-08-18 江苏扬力数控机床有限公司 一种防弯曲割管装置
CN114311168A (zh) * 2021-12-21 2022-04-12 唐山市宝珠家具有限公司 一种用于家具产品的全自动加工***及其加工方法

Citations (8)

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Publication number Priority date Publication date Assignee Title
US1685539A (en) * 1925-03-19 1928-09-25 Charles L Huston Electromagnetic carrier system for heavy plates
US2207024A (en) * 1938-08-18 1940-07-09 Prince Senior Abram Trimming device
US2837159A (en) * 1954-05-21 1958-06-03 Herr Equipment Corp Methods of and apparatus for cutting strip material
US3154991A (en) * 1963-06-07 1964-11-03 William J Durtschi Disc trimming machines
US3297173A (en) * 1964-10-09 1967-01-10 Houdaille Industries Inc Workpiece positioning mechanism for a machine tool
US3592095A (en) * 1968-04-17 1971-07-13 B R G Rue Pasteur Devil Soc Shears and the like apparatus for cutting sheet material
US3768101A (en) * 1972-02-18 1973-10-30 Vulcan Corp Trimming apparatus
US3788174A (en) * 1972-12-15 1974-01-29 Kemlite Corp Machine for trimming the edges of panels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685539A (en) * 1925-03-19 1928-09-25 Charles L Huston Electromagnetic carrier system for heavy plates
US2207024A (en) * 1938-08-18 1940-07-09 Prince Senior Abram Trimming device
US2837159A (en) * 1954-05-21 1958-06-03 Herr Equipment Corp Methods of and apparatus for cutting strip material
US3154991A (en) * 1963-06-07 1964-11-03 William J Durtschi Disc trimming machines
US3297173A (en) * 1964-10-09 1967-01-10 Houdaille Industries Inc Workpiece positioning mechanism for a machine tool
US3592095A (en) * 1968-04-17 1971-07-13 B R G Rue Pasteur Devil Soc Shears and the like apparatus for cutting sheet material
US3768101A (en) * 1972-02-18 1973-10-30 Vulcan Corp Trimming apparatus
US3788174A (en) * 1972-12-15 1974-01-29 Kemlite Corp Machine for trimming the edges of panels

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400406A1 (fr) * 1977-07-20 1979-03-16 Haemmerle Ag Procede pour positionner des pieces en forme de plaques par rapport a un poste de travail, et dispositif pour la mise en oeuvre du procede
US4235139A (en) * 1977-07-20 1980-11-25 Haemmerle A.G. Automatic shearing apparatus
US4186310A (en) * 1978-06-19 1980-01-29 Maxey Carl W Automatic wane detector
US4196648A (en) * 1978-08-07 1980-04-08 Seneca Sawmill Company, Inc. Automatic sawmill apparatus
US4628578A (en) * 1983-08-19 1986-12-16 Kabushiki Kaisha Komatsu Seisakusho Method and apparatus for automatic punching
US5117717A (en) * 1990-12-18 1992-06-02 Oscar Mayer Foods Corporation On-weight slicing system
US5381342A (en) * 1992-02-15 1995-01-10 Bwg Bergwerk- Und Walzwerk- Maschinenbau Gmbh System for trimming a continuously moving metal strip
US6546834B1 (en) * 1997-12-24 2003-04-15 Giben Impianti S.P.A. Method and machine for sawing panels with laterally movable pusher
US8151677B1 (en) * 1997-12-24 2012-04-10 Giben International S.P.A. Method and machine for sawing panels with laterally movable pusher
US20120234144A1 (en) * 2011-03-17 2012-09-20 Tormoen Craig C Methods for sheet registration and shearing

Also Published As

Publication number Publication date
FR2204986A5 (ja) 1974-05-24
JPS504687A (ja) 1975-01-18
IT996846B (it) 1975-12-10
DE2352648A1 (de) 1974-05-02
BE806577A (fr) 1974-04-26
GB1447688A (en) 1976-08-25
AT344484B (de) 1978-07-25
ZA738024B (en) 1975-02-26
SE402411B (sv) 1978-07-03
ATA904673A (de) 1977-11-15

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