US3828639A - Shear mounting for corner shearing machine - Google Patents

Shear mounting for corner shearing machine Download PDF

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Publication number
US3828639A
US3828639A US00280248A US28024872A US3828639A US 3828639 A US3828639 A US 3828639A US 00280248 A US00280248 A US 00280248A US 28024872 A US28024872 A US 28024872A US 3828639 A US3828639 A US 3828639A
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United States
Prior art keywords
blade
pair
guide
blade means
slide
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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.)
Expired - Lifetime
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US00280248A
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English (en)
Inventor
G Roch
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Murata Wiedemann Inc
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Hurco Manufacturing Co Inc
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Filing date
Publication date
Application filed by Hurco Manufacturing Co Inc filed Critical Hurco Manufacturing Co Inc
Priority to US00280248A priority Critical patent/US3828639A/en
Priority to CA177,335A priority patent/CA994231A/en
Priority to IT51807/73A priority patent/IT990119B/it
Priority to GB3764673A priority patent/GB1446206A/en
Priority to GB783076A priority patent/GB1446207A/en
Priority to FR7329581A priority patent/FR2196217B1/fr
Priority to JP9060573A priority patent/JPS577850B2/ja
Priority to DE19732341101 priority patent/DE2341101A1/de
Priority to SE7311098A priority patent/SE415539B/sv
Priority to CH1169573A priority patent/CH576320A5/xx
Priority to US05/469,434 priority patent/US3942400A/en
Publication of US3828639A publication Critical patent/US3828639A/en
Application granted granted Critical
Priority to CA251,534A priority patent/CA1019668A/en
Priority to JP58052288A priority patent/JPS58196914A/ja
Assigned to HURCO MANUFACTURING COMPANY, INC., AN IN CORP. reassignment HURCO MANUFACTURING COMPANY, INC., AN IN CORP. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BENDIX AUTOMATION COMPANY
Assigned to WARNER & SWASEY COMPANY THE, WIEDEMANN DIVISION, 211 SUTH GULPH ROAD, KING OF PRUSSIA, PA. 19406, A CORP. OF MICHIGAN reassignment WARNER & SWASEY COMPANY THE, WIEDEMANN DIVISION, 211 SUTH GULPH ROAD, KING OF PRUSSIA, PA. 19406, A CORP. OF MICHIGAN CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: HURCO MANUFACTURING CMPANY, INC.
Assigned to WARNER & SWASEY COMPANY, THE, A MICHIGAN CORP. reassignment WARNER & SWASEY COMPANY, THE, A MICHIGAN CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HURCO COMPANIES INCORPORATED, A IN. CORP.
Assigned to HURCO COMPANIES, INC. reassignment HURCO COMPANIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: MARCH 14, 1985 Assignors: HURO MANUFACTURING COMPANY, INC.
Assigned to MURATA WIEDEMANN, A CORP OF DE reassignment MURATA WIEDEMANN, A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WARNER & SWASEY COMPANY, THE, A CORP OF MI
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/005—Adjusting the position of the cutting members
    • 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
    • B23D15/06—Sheet shears
    • 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
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5787—Clamp driven by yieldable means
    • Y10T83/5805—Fluid pressure yieldable drive 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8828—Plural tools with same drive means
    • Y10T83/8831—Plural distinct cutting edges on same support
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8853—Including details of guide for tool or tool support
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8867—With means to adjust tool position on tool holder
    • Y10T83/8868—Adjustably mounted cooperating 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable
    • Y10T83/9486—Rectilinearly

Definitions

  • ABSTRACT A comer shearing machine has two pairs of shears, the lower blade of one pair intersecting the lower blade of another at a right angle, and the upper blade of one pair intersecting the upper blade of the other pair at a right angle, the lower blades being mounted to a base and the upper blades to a reciprocable ram. Adjusting wedge assemblies, with screw drives and manually operable cranks facilitate adjustment of blade clearance,
  • Ram drive is by one or another of two hydraulic cylinders operating through a rocker shaft and linkage connected to the ram, and hydraulic clamps secure the work.
  • the present invention is directed toward convenience and reliability in establishing, selecting, and maintaining desired blade clearances.
  • a corner shearingmachine is provided with two pairs of shears and means for adjusting the clearance between the upper and lower blades of the one pair when the blades are closed, and for adjusting the-clearance between the upper and lower blades of the other pair when the blades are closed, and facilitating such adjustment.
  • Means are alsoprovided to establish and maintain zero clearance between the guide slides secured to the moving blade, and the guideway secured to the base, to avoid changes in blade clearance with changes of blade loading.
  • Full or half-stroke blade drive is provided by energization of alternate drive means therefor.
  • FIG. 1 is a perspective view of a corner shearing machine incorporating a typical embodiment of the pres- 3-3' in FIG. 2 and .viewed in the direction of the arrows, and illustrating the left-hand side of the ram frame, upper side blade drive cranks and links.
  • FIG. 4 is a top plan view of a portion of the assembly of FIGS. 2 and 3 and on the same scale as FIG. 3 and partially sectioned to show details of the ram lock and of the swivel bearings.
  • FIG. 5 is a schematic top plan view of the ram assembly andadjustment means therefor.
  • FIG. 6 is a schematic corner view as taken at line 6-6 in FIG. 5 and viewed in the direction of the arrows.
  • FIG. 7 is a top plan view on a scale larger than FIG. 2 and smaller than FIG. 4.and omitting the upper blade mounting ram and rocker shaft and linkage therefor.
  • FIG. 8 is a much enlarged section through the adjustment assembly taken at line 88 in FIG. 7 and viewed in the direction of the arrows.
  • FIG. 9 is a section taken at line 99 in FIG. 8 and viewed in the direction of the arrows.
  • FIG. 10 is a still further enlarged top plan view of the right front corner portion of the viewof FIG. 7 and including a portion of the ram assembly, particularly the front guide block thereof.
  • FIG. 11 is an elevation of the structure shown in FIG. 10 behind the line 11-11 in FIG. 10 and viewed in the direction of the arrows.
  • FIG. 12 is a section taken at line l2l2 in FIG. 10 and showing a portion of the hold-down system.
  • FIG. 13 is a hydraulicschematic diagram.
  • the machine includes a vertically reciprocable ram 11 which mounts upper front and side blades (not shown in FIG. 1) behind the front cover plate 12 and left side cover plate 13, respectively, and meeting in a corner. These blades are disposed above lower blades, likewise meeting in a corner behind the corner 14. These features are shown schematically in FIGS. 5 and 6 and described in more detail hereinafter.
  • the ram is operable by cylinder means 15 to drive the upperblades in shearing relation with the lower blades.
  • the stock to be sheared is mounted on a Y-axis table top 16 and is gripped by a set of grippers mounted on an X-axis carriage inside the housing 17.
  • a stationary table top-l8 is provided immediately in front of a stationary cover plate 19 immediately in front of the lower front blade.
  • This stationary top is slotted at 21 to accommodate an upstanding support from a bearing assembly mounted on a Y-axis guide rod in housing 22 similar to Y-axis guide rods 23 and 24 in their respectivehousings, all of which support bearings supporting a Y-axis carriage to which the table top 16 and housing 17 are affixed for movement toward the blades in the direction of arrow 26 and movement away from the blades in direction of arrow 27.
  • housing 17 supporting the X -axis carriage for movement of the grippers toward the blades in the direction of arrow 28 and away from the blades in the direction of arrow 29.
  • a conveyor assembly is provided at 31 to remove sheared corner blanks'from below the ram 11 in the direction of arrow 32.
  • FIG. 5 shows a ram 11 having affixed thereto adjacent the righthand front comer a front guide slide block 33 projecting upwardly therefrom. Adjacent the left rear corner of the ram is another block affixed thereto which will be referred to as the side guide slide block 34.
  • the upper front blade affixed to the ram is designated schematically at 36U and the lower front blade affixed to the base is designated schematically at 36L.
  • the upper side blade affixed to the ram is designated 37U and the lower side blade affixed to the base is designated 37L.
  • a comer block The blade clearance between the front blades is designated by the dimension CF and the clearance between the side bladesis designated by the dimension CS. This is the clearance measured perpendicular to the gauge faces when the blades are closed by the shear ram being down.
  • Screw operated wedges 46 and 47 engage slide guide blocks in the form of wedges 48 and 49 respectively which engage the rear faces of the side and front guide slide blocks, respectively. Operation of these wedges is effective to move the arm forward in the direction of arrow 51 to reduce the front blade clearance CF.
  • This feature is described in the aforementioned patent application and provides a rake beginning with the right-hand corner 36R of the upper blade 36U and continuing through the rear corner 37P of the side blade 37U.
  • the amount of this rake is approximately 150 thousandths of an inch per foot of length of the blade.
  • the overall length of the front blade is 66 inches, and thev overall length of the side blade is 48 inches, the blades being 1 inch thick and 3 inches high.
  • a structure which may be referred to as the ram housing serves as a stationary base in the illustrated embodiment, and includes a weldment including a left side 56, right side 57, rear cross member 58 and center support 59, and ram drive cylinder rear mounting bracket 61.
  • a drive crankshaft (tube) has its opposite ends mounted to the left and right side of the ram housing through crank bearing assemblies 63 secured to the sides 56 and 57.
  • the main drive crank 64 affixed to the crankshaft 62 has a swivel bearing therein receiving a pin connecting the crank clevis 66 thereto, this clevis being connected to the end of the piston rod 67 of hydraulic cylinder 68.
  • Another hydraulic cylinder 69 is secured to cylinder 68 in an end-to-end arrangement, and the piston rod thereof71 is pinned to bracket 61. Extension of the piston rod of either of these cylinders serves to rock the crankshaft forward in the direction of arrow 72 to drive the ram 11 downward.
  • a pair of links 73 is pinned to the crank 64 and to a bracket affixed to the ram frame 11.
  • another pair of links 74 is pinned to a bracket 76 (FIG. 3) affixed to the top of the ram frame 11, the upper ends of these links being pinned to a crank 77 affixed to the crankshaft 62.
  • Crank 77 has a link assembly comprising short link 78 and long link 79 affixed together and pinned to crank 77 at 81.
  • This pair of connecting links 78 and79 is affixed together by cross members suchas 82 and 83 (FIG. 4) and is pinned to a driven crank 84 mounted to a driven crankshaft 86 supported in bearing assemblies contained in housing 87 and 88 (FIG. 4) secured respectively to thecrank frame sides 89 and 91 which are part of a crank frame including bottom plate 90A, cross brace 90B, and back plate 90C, with side 89 and back plate 90C secured to the left side 56 and rear cross member 58 respectively of the ram housing.
  • FIG. 1 shows a link assembly comprising short link 78 and long link 79 affixed together and pinned to crank 77 at 81.
  • This pair of connecting links 78 and79 is affixed together by cross members suchas 82 and 83 (FIG. 4) and is pinned to a
  • a ram lock arrangement is provided.
  • This includes an actuator rod 96 (FIG. 4) having a shear pin mount 97 secured thereto by a lock pin 98.
  • This shear pin mount is received in a guide cylinder 99 and has a shear pin end 101 connected thereto by means of the shear pin 102 which is a part of or secured to the shear pin mount 97.
  • the shear pin end 101 is received in the aperture 103 in the rear end of the long connecting link 79 as the ram lockactuator spring 104 seated on the crank frame wall 106 bears against the shoulder of the shear pin mount 97 urging it to the left'in the direction of arrow 107.
  • a ram release cylinder 108 mounted to the crank frame wall 106 has its piston connected to the actuator rod and is capable of drivingthe pin to the right against the load of the spring 104 when hydraulic pressure is applied in the cylinder 108. It thus removes the shear pin end from the locking aperture 103 in the long connecting link 79 and enables the ram drive cylinders 68 and 69 to operate the ram.
  • a limit switch 109 senses the position of the actuator rod, and a rotary limit switch 111 senses the rotational position of the driven crank shaft.
  • the upper side blade 37U is affixed to the ram frame 1 1 by a plurality of horizontally spaced socket head bolts 112.
  • the upper front blade is secured to the ram frame in the same way, and the comer blocks may be secured in the same way, or
  • the lower side blade is secured to the ram housing side 56 by bolts in the same way and the nuts received on the outer ends thereof are apparent at 113 in FIG. 1.
  • the lower front blade 36L is secured to the lower front 1 14 of the ram housing, in the same way as shown in FIG. 3.
  • the pressure pad 116 of the hold down assembly is directly above the top surface of the lower blade 36L behind the relief groove 117 in the blade. Thus it is disposed to clamp the sheet stock or plate stock 118 directly between it and the upper edge of the blade, 36L.
  • This pressure pad is secured by dowel pin 119 to guide pin 121 received in bushing 122. It is drivable downwardly by hydraulic cylinder 123.
  • This cylinder is affixed to bracket 124 which is, in turn, affixed to plate 126 whose upper edge 128 abuttingly engages the lower'edge 127 of the upper front-wall 60 of the ram housing.
  • FIG. 12 shows one hold-down or clamp unit (and part of another) at the opposite (right-hand) end of the front cover plate 12. It illustrates that each end of a hold-down pressure pad 1 16 is connected to a guide pin in the same manner as shown in FIG. 3. For each holddown pad, there is a return spring 131 received under washer132 retained on the stud 133 by the nuts 134. The lower end of the stud is pinned to the hold-down and the lower end of the spring is seated on the bottom 136 of the counterbore in the guide pin bushing mounting bracket 137 affixed to the front frame cover plate 12.
  • the spring for each pressure pad returns the pad to a position of engagement of the upper face 138 of the pressure pad with the lower face of the guidev bushing mounting bracket 137.
  • FIGS. 7 through 10 details of the blade clearance adjusting means will bedescribed.
  • the wedges 41, 43, 47 and 49 described above with reference to FIG. 5 are shown in their actual form in FIGS. 8 and 9. Of course these are for the right front corner and the guide block wedges 43 and 49 serve to provide the guideway or gibbing for the front guide slide block 33 of the ram, so may be referred to as gib wedges.
  • Wedges 42 and 48 of FIG. 5 may likewise be referred to as gib wedges.
  • Thewedge 41 is disposed between the face 141 (FIG. 8) of a plate 142 of the guideway housing, this plate being affixed to the right side 57.
  • the tapered face of wedge 41 engages the tapered face of wedge 43, the latter being confined vertically between the way cap 143 at its upper end and the top surface 144 of the bottom plate 146 of the guideway housing, the latter ,being affixed with respect to the plate 142 thereof and the rear plate 147 thereof.
  • a wedge screw 148 is threadedly received in the wedge nut 149 received in a cavity in the wedge 41 and prevented from rotation in the cavity. whereby the wedge can be driven downwardly and upwardly upon rotation of the wedge screw 148.
  • the wedge screw shaft passes upwardly through the gear box 151 secured to the front gear box mounting plate 152 which is secured to the front guideway housing.
  • This gear box includes a gear keyed to the wedge screw shaft and driven by a worm on a shaft to which the U-joint assembly 153 is connected.
  • a gear box assembly 154 is mounted to the front gear box mounting plate to drive the wedge screw shaft 156 having the screw thread thereon threadedly receiving the nut 157 confined in a cavity in the wedge 47.
  • Wedge 47 has a vertically extending slot 158 therein receiving a screw 159.
  • the purpose of the screw 161 is to retain the spring which urges the wedge 43 in the direction of arrow 166 against wedge 41.
  • the same effect is provided as to wedge 49 by a spring around screw 159 urging wedge 49 against wedge '47.
  • the wedge 49- is confined in the same way as is wedge 43 so that it does not move vertically while wedge 47 is moved vertically.
  • a rear adjuster shaft 171 is connected through suitable couplings 172 to the worm shafts of the gear boxes 154 and 168.
  • a front adjuster shaft 173 is connected between the worm shafts of the gear boxes 151 and 169.
  • the gear box.154 there is an extension shaft 176 from the universal joint assembly 177 connected to the worm shaft of the gear box.
  • the extension shaft is carried in a support collar 178 received in an aperture in the side wall 57 and the extension shaft has a wrench adapter nut 179 affixed tothe outer end thereof.
  • This receives a matching socket of an adjusting wrench which, in the illustrated example, is the socket 181 connected to a crank 182 having a handle knob 183 thereon. Rotation of this crank by manual effort serves to simultaneously operate wedges 47 and 46.
  • extension shaft construction is provided at the universal joint. 184 for gearbox 168 and at the universal joint 153 for gearbox 151 (FIG. 7), and at the universal joint 186 for gearbox 169.
  • the adjuster shafts synchronize operation of gearboxes, which provides a choice of two locations for adjusting side blade clearance, and two locations for adjusting front blade clearance. Use of a srench at either location will provide uniform horizontal movement of both ends of the blade involved, and will provide a clearance change that is uniform throughout the length of the respective blade.
  • bushing 187 and 188 are two gauge bushings 187 and 188 in the front hold-down frame plate 12 (FIG. 1), adjacent opposite ends of the upper front blade, and two gauge bushings 189 and 191 in the cover plate 13 of the side hold-down assembly, adjacent opposite ends of the upper side blade.
  • Each of these bushings is identical to the others, and a description of one should suffice for all.
  • bushing 187 is received in plate 12 and secured in place by a set screw or other suitable means. It fittingly receives the adaptor plug 192 if a gauge unit 193 having a flange 194 locating against the outer face of the bushing 187.
  • the gauge unit includes a pin 196 whose inner end is engageable with the front face of the upper front blade 36U.
  • the gauge unit includes a dial indicator 197 mounted therein for operation by the pin 196.
  • the height of the bushing in the front frame 12 is such that the pin on the gauge unit remains in contact with the front face of the upper front blade from the ram up condition to the ram down condition.
  • the pivoting way plate is connected by a pivot pin 212 to the upper and lower arms 213 and 214, respectively (better shown in FIG. 11), of
  • the present invention enables maintenance of zero clearance between the guide slides and guide wedges, and thereby maintain a desired blade clearance constantly under all conditions.
  • a hydraulic balance of guide separating forces is achieved by gib pressure hydraulically 1 applied through the take-up blocks (or gib pressure pads).
  • gib pressure hydraulically 1 applied through the take-up blocks (or gib pressure pads).
  • Each such block may exert a force depending on the size of the associated cylinders, and pressure therein, and it is believed that between 2,000 and 4,000 pounds force for each block should suffice for most operating conditions.
  • Cylinder 68 has a stroke'twice that of-eylinder 69 and the strokes are two and one half inch and one and one quarter inch, respectively.
  • the purpose of the short stroke or half stroke cylinder 69 is to drive the ram approximately one and one quarter inch for shearing only with the front blade, considering the rake from the right hand corner of the front blade to the left hand end thereof.
  • the full stroke cylinder is used for a complete two and one half inch stroke of the ram for shearing with both the front and side blades.
  • the shearing with the front blade alone is used for a slitting operation as described in the aforementioned patent application.
  • the take-up cylinders are shown at 199, 202, 208, and 210.
  • the ram lock release cylinder is shown at 108.
  • the hold-down cylinders are also shown at 123.
  • Hydraulic supply for the system is provided by pumps 221 and 222 driven by motor 223.
  • pump 221 provides an output on line 224 at one thousand pounds per square inch.
  • Pump 222 provides an output on line 226 at two thousand pounds per square inch.
  • An adjustable unloading valve to return to sump 227 is provided at 228.
  • the pressure line 224 from the low pressure pump 221 is connected to the junction 231 from which it is delivered through the half stroke cylinder control valve SV2 to the rod end of the half stroke cylinder-69. It is also delivered through the full stroke cylinder control valve SVl to the rod end of the full stroke cylinder 68.
  • valve SV2 is shifted by the solenoid thereof to deliver hydraulic fluid from junction 231 to the head end of the piston in cylinder 69, venting the rod end to sump 227.
  • a pressure up to 1,000 pounds per square inch would be applied to the piston to drive the ram downwardly. If the thickness of the material or other conditions required an increase in pressure, solenoid valve,
  • SV4 can be energized to apply pressure from line 226 established in accumulator AC1 through valve SV4 to the junction 231 and thence to the head end of cylinder 69.
  • the same type of operation can be effected for the full stroke cylinder 68 but it is not intended that both cylinder piston rods be extended at the same time.
  • FIG. 13 also shows the eight pairs of hold-down cylinders 123 for the eight hold-down pressure pads above OPERATION in setting up the machine for the desired blade clearance, the procedure to be followed may begin with the ram up and the movable wedges fully up. With new blades in the machine, this should provide a blade clearance of approximately 0.060 inches. Then the ram is jogged downwardly by momentarily shifting the valve SV3 until the upper and lower blades have closed sufficiently with each other to be in registry, both at the front and at the side. Although the rake of the upper blades has been described above, and is shown in an exaggerated form in FIG.
  • each blade being approximately 3 inches is sufficient that it is possible to establish registry or a face-to-face relation between at least a portion of the upper and lower front blades and upper and lower side blades throughout the length of each.
  • shim stock of known thickness can be placed between the facing surfaces of the upper and lower blades, then the hand cranks for the wedge drive gear boxes are turned to the extent required to move the ram in the direction necessary to close up the clearance until there is a drag established on the shim stock. This may be done first with the wedges adjusting the side blade clearance, orfirst with the wedges adjusting the front blade clearance.
  • the adjuster shaft associated with the wedges for adjusting those blades can be connected initially.
  • the adjusting shaft 171 can be connected before the above described desired clearance adjustment is made.
  • the cranking at the right-hand side by use of a wrench or crank on the adaptor 179 will serve to simultaneously establish the desired clearance throughout the length of the front blades.
  • the gear ratio in the gear boxes is such that, combined with the ramp of the wedges, it requires approximately 10 turns of a crank on the extension shaft to achieve ablade clearance change of approximately 0.0010 inches. It is believed that for thicknesses of 0.080 or less hot or cold rolled mild steel, a front and side blade clearance of approximately 0.0050 inches with new blades will give satisfactory blade life.
  • the invention claimed is: 1. In a corner notch cutting shear assembly, the combination comprising:
  • first and second pairs of shears disposed for notching a corner in material, said first pair including first blade means and third blade means, said first blade means being secured to said base means, and said second pair including second blade means and fourth blade means, said second blade means being secured to said base means,
  • said third blade means being closable with said first blade means for shearing sheet material along a first line
  • said fourth blade means being closable with said second blade means for shearing said sheet material along a second line intersecting said first line
  • said slide means include a first pair of slide faces and a second pair of slide faces
  • said guide means include a first pair of guide blocks engaging and guiding said first pair of slide faces, thereby establishing a first plane of movement of said third blade means during'closure with said first blade means
  • said guide mean's include 'a second pair of guide blocks engaging and guiding said second pair of slide faces, thereby establishing a second plane of movement of said fourth blade means during closure with said second blade means, said first pair of guide blocks being movable toward and away from said first blade means to change the blade clearance of said first pair of shears, and said'second pair of guide blocks being movable toward and away from said second blade means to change the blade clearance of said second pair of shears.
  • said slide faces and guide blocks are oriented to establish said second plane perpendicular to said first plane.
  • said first and second blade means are affixed to said base means and meet in a corner
  • said third and fourth blade means are affixed toa ram and meet in a corner.
  • said adjusting means further include a first pair of rotary means associated with said first pair of guide blocks and operable upon rotation thereof to move said guide blocks of said first pair toward said first blade means, and a second pairof rotary means associated with said second pair of guide blocks andoperable upon rotation thereof to move said guide blocks of said second pair toward said second blade means.
  • wedge means engage each of said guide blocks, and
  • said rotary means include gearboxes having output screws threadedly received in said wedge means and operable upon rotation to move said wedge means against their respective guide blocks;
  • one of the rotary means of said second pair being adjacent said one rotary means of said first pair, and the other rotary means of said second pair being adjacent the other rotary means of said first pair.
  • each said rotary means of a pair is operable independently of the other rotary means of the pair.
  • pin gauge mounting means secured to said base means adjacent opposite ends of said first and second blade means and having axes perpendicular to faces of said third and fourth blade means to facilitate measurement of changes in blade clearance.
  • 1 1.
  • said slide means include a third pair of slide faces facing in a direction opposite that faced by said first pair, and a fourth pair of slide faces facing in a direction opposite that faced by said second pair,
  • said take-up means including a first pair of pressure pads engaging said third pair of slide faces and urging them toward said slide blocks of said first pair, and a second pair of pressure pads engaging said fourth pair of slide faces and urging them toward the said slide blocks of said second pair.
  • said take-up means include hydraulic cylinders driving said pressure pads against said slide faces of said third and fourth pair.
  • first and second guide means on said base means and receiving, respectively, said first and second slide members
  • each of said guide means including a guide surface and a take-up surface, with one of said slide members running between said surfaces, and means for moving said guide surface toward said one of said base mounted blade means for reducing clearance between said one of said base mounted blade means and said one of said ram mounted blade means.
  • each of said guide means include a screw operated wedge operable to drive said guide surface toward said third blade means, and biasing means urging said take-up surface in a direction away from said third blade means.
  • said biasing means include a fluid operated actuator forcing said take-up surface away from said third blade means.
  • said actuator is a hydraulic cylinder assembly.
  • each of said guide means includes a second guide surface and a second take-up surface, with one of said slide members running between them, and means for moving said second guide surface toward the other of said base mounted blade means for reducing blade clearance of the other pair of shears.
  • each of said guide means includes a second screw operated wedge operable to drive said second guide surfaces toward said fourth blade means, and sec'-.
  • said second biasing means include a fluid operated actuator having fluid pressure thereon forcing said second take-up surface away from said fourth blade means.
  • said rocker member is a shaft which has arms projecting radially outward therefrom;
  • said connector means include connector links connected to at least one of said arms and to said ram means;
  • the assembly further comprising fluid powered actuator means connected between said base means and another of said arms and operable to rock said shaft about its longitudinal axis.
  • rocker member having a pair of arms thereon and rockable on an axis parallel to and spaced from the axis of said rocker shaft
  • a synchronizing link connected between one of said arms of said rocker shaft and one of said arms of said second rocker member for rocking said second rocker member in synchronism with said rocker shaft;
  • connections between said ram means and said connector links are at the corners of a triangle, one of the corners being adjacent an intersection of said third and fourth blade means, and the other corners being adjacent the opposite ends of said third and fourth blade means.
  • connections of said arms to said connector links are swivel connections.
  • material hold-down means associated with said first and second blade means and operable, when actuated on the material to be sheared, to clamp said material against portions of said first and second blade means.
  • said first and second blade means having top surfaces thereon extending perpendicular to and away from cutting edges of said first and second blade means, said hold-down means having pressure pads immediately above said top surfaces and operable, when actuated, to clamp the said material between said pressure pads and said blade top surfaces.
  • said hold-down means have a plurality of said pres sure pads disposed in a line above the said top surfaces of said blade means, each said pressure pad having at least one hydraulically driven pad applying cylinder, and having a return spring thereon to release said pressure pad from the material.
  • a pair of shears including stationary blade means affixed to said base means, and moving blade means closable with said stationary blade means for shearing sheet material;
  • said take-up means include fluid powered and pressurized actuators.
  • said fluid powered actuators are hydraulic cylinders.
  • said slide means include a pair of spaced slide blocks having faces facing in one direction;
  • said guide means include a pair of spaced guide blocks having faces engaging said slide block faces;
  • take-up means include take-up blocks having faces engaging said slideblocks and urging them in said one direction, against said guide blocks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Details Of Cutting Devices (AREA)
US00280248A 1972-08-14 1972-08-14 Shear mounting for corner shearing machine Expired - Lifetime US3828639A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US00280248A US3828639A (en) 1972-08-14 1972-08-14 Shear mounting for corner shearing machine
CA177,335A CA994231A (en) 1972-08-14 1973-07-25 Shear mounting for corner shearing machine
IT51807/73A IT990119B (it) 1972-08-14 1973-08-02 Perfezionamento nelle macchine tran ciatrici
GB3764673A GB1446206A (en) 1972-08-14 1973-08-08 Corner notch cutting shear assembly
GB783076A GB1446207A (en) 1972-08-14 1973-08-08 Method of shearing metal or other material in sheet form
FR7329581A FR2196217B1 (de) 1972-08-14 1973-08-13
CH1169573A CH576320A5 (de) 1972-08-14 1973-08-14
DE19732341101 DE2341101A1 (de) 1972-08-14 1973-08-14 Messerhalterung fuer eckenausschneidemaschinen
JP9060573A JPS577850B2 (de) 1972-08-14 1973-08-14
SE7311098A SE415539B (sv) 1972-08-14 1973-08-14 Sett att klippa horn i metallplat eller andra skivformiga material och hornklippningsmaskin for utforande av settet
US05/469,434 US3942400A (en) 1972-08-14 1974-05-13 Shear mounting for corner shearing machine
CA251,534A CA1019668A (en) 1972-08-14 1976-04-30 Method of shearing metal or other materials in sheet form
JP58052288A JPS58196914A (ja) 1972-08-14 1983-03-28 かど切欠き剪断装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00280248A US3828639A (en) 1972-08-14 1972-08-14 Shear mounting for corner shearing machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/469,434 Division US3942400A (en) 1972-08-14 1974-05-13 Shear mounting for corner shearing machine

Publications (1)

Publication Number Publication Date
US3828639A true US3828639A (en) 1974-08-13

Family

ID=23072283

Family Applications (1)

Application Number Title Priority Date Filing Date
US00280248A Expired - Lifetime US3828639A (en) 1972-08-14 1972-08-14 Shear mounting for corner shearing machine

Country Status (9)

Country Link
US (1) US3828639A (de)
JP (2) JPS577850B2 (de)
CA (1) CA994231A (de)
CH (1) CH576320A5 (de)
DE (1) DE2341101A1 (de)
FR (1) FR2196217B1 (de)
GB (2) GB1446206A (de)
IT (1) IT990119B (de)
SE (1) SE415539B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534255A (en) * 1982-06-09 1985-08-13 Salvagnini Transferica S.P.A. Shearing machine for metal sheet having blades at right angles consisting of mutually movable segments
US4811640A (en) * 1988-03-14 1989-03-14 Rudy Fritsch Metal shearing machine
US4991480A (en) * 1988-03-14 1991-02-12 Rudy Fritsch Metal shearing machine
US5005456A (en) * 1988-09-29 1991-04-09 General Electric Company Hot shear cutting of amorphous alloy ribbon
US5125307A (en) * 1990-11-13 1992-06-30 Emhart Inc. Cropping mechanism for surface mount placement machine
WO1995006548A1 (en) * 1993-08-30 1995-03-09 Milliken Research Corporation Method and apparatus for cutting piled fabric
US5970839A (en) * 1996-10-02 1999-10-26 Murata Kikai Kabushiki Kaisha Work cutting apparatus
CN104384593A (zh) * 2014-11-14 2015-03-04 扬州固诚机床有限公司 一种剪板机刀头运行装置
US20160114415A1 (en) * 2013-05-21 2016-04-28 Nibbler Sales AB Cutting apparatus
CN106737915A (zh) * 2016-12-16 2017-05-31 滁州胜全农业开发有限公司 一种医疗用中药材双向切割装置
CN107671262A (zh) * 2017-08-10 2018-02-09 伊之密机器人自动化科技(苏州)有限公司 一种机器人自动化的油压剪装置
WO2018227283A1 (en) * 2017-06-12 2018-12-20 Mi Intégration S.E.N.C. Automated notching apparatus and method
CN109176619A (zh) * 2018-08-03 2019-01-11 安徽甬安雨具有限公司 一种雨衣生产用布料裁断装置
CN109807583A (zh) * 2019-01-25 2019-05-28 二重（德阳）重型装备有限公司 一种剪机刀片更换装置及更换方法
CN110548920A (zh) * 2019-09-29 2019-12-10 湖北鑫泰钢构工程有限公司 一种剪板机固定机构

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DE2442547C2 (de) * 1974-09-05 1986-05-28 C. Behrens Ag, 3220 Alfeld Winkelschere zum Zerteilen von Tafeln oder Platten
JPS5815066Y2 (ja) * 1979-03-24 1983-03-26 村田機械株式会社 シアリング機におけるブレ−ド間隔調節装置
JPH0239697Y2 (de) * 1981-05-26 1990-10-24
GB2098910B (en) * 1981-05-26 1986-05-14 Amada Co Ltd Shearing machine
DE8603873U1 (de) * 1986-02-13 1986-04-17 Ludwig Boschert Maschinen- Und Apparatebau Gmbh & Co Kg, 7 Ausklinkvorrichtung
DE3636445A1 (de) * 1986-10-25 1988-05-05 Fischer Maschf Karl E Winkelschere
DE4201713C2 (de) * 1992-01-23 1995-07-06 Rainer Dangel Vorrichtung zum Anbringen von lage- und formdefinierten Öffnungen in Blechwänden oder dergleichen Bauteilen
JPH0985678A (ja) * 1995-09-22 1997-03-31 U H T Kk 電子機器の切断装置
CN104741682A (zh) * 2015-04-10 2015-07-01 康凤明 一种新型液压连杆剪板机

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US2120329A (en) * 1936-08-01 1938-06-14 Frederick C Henneke Pinking machine
US2833349A (en) * 1955-01-26 1958-05-06 Lee B Green Shear
US2939358A (en) * 1955-08-15 1960-06-07 Pacific Ind Mfg Co Ledger blade adjustment means for shear machine
US2964984A (en) * 1956-11-20 1960-12-20 George F Wales Apparatus for notching sheet material having reversible multiple cutting edge ledger blades
US2990811A (en) * 1960-05-31 1961-07-04 Mackie William Marking chalk sharpener
US3205748A (en) * 1963-05-31 1965-09-14 Pierce All Mfg Ltd Adjustable shearing tool
US3316790A (en) * 1965-09-27 1967-05-02 Frederiksen Ove Steen Cutting apparatus
US3756110A (en) * 1970-02-26 1973-09-04 Arx Paul Von Table shear with gap-adjusting means

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DE1267945B (de) * 1962-05-23 1968-05-09 Schloemann Ag Vorrichtung zum Einstellen und Nachstellen der Messer von Metallscheren, insbesondere von schweren maschinell angetriebenen Blechscheren
US3691887A (en) * 1970-06-01 1972-09-19 Hurco Mfg Co Inc Automatic shearing method and apparatus

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Publication number Priority date Publication date Assignee Title
US2120329A (en) * 1936-08-01 1938-06-14 Frederick C Henneke Pinking machine
US2833349A (en) * 1955-01-26 1958-05-06 Lee B Green Shear
US2939358A (en) * 1955-08-15 1960-06-07 Pacific Ind Mfg Co Ledger blade adjustment means for shear machine
US2964984A (en) * 1956-11-20 1960-12-20 George F Wales Apparatus for notching sheet material having reversible multiple cutting edge ledger blades
US2990811A (en) * 1960-05-31 1961-07-04 Mackie William Marking chalk sharpener
US3205748A (en) * 1963-05-31 1965-09-14 Pierce All Mfg Ltd Adjustable shearing tool
US3316790A (en) * 1965-09-27 1967-05-02 Frederiksen Ove Steen Cutting apparatus
US3756110A (en) * 1970-02-26 1973-09-04 Arx Paul Von Table shear with gap-adjusting means

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534255A (en) * 1982-06-09 1985-08-13 Salvagnini Transferica S.P.A. Shearing machine for metal sheet having blades at right angles consisting of mutually movable segments
US4811640A (en) * 1988-03-14 1989-03-14 Rudy Fritsch Metal shearing machine
US4991480A (en) * 1988-03-14 1991-02-12 Rudy Fritsch Metal shearing machine
US5005456A (en) * 1988-09-29 1991-04-09 General Electric Company Hot shear cutting of amorphous alloy ribbon
US5125307A (en) * 1990-11-13 1992-06-30 Emhart Inc. Cropping mechanism for surface mount placement machine
US5979278A (en) * 1993-08-30 1999-11-09 Warthen; William Perry Method for cutting piled fabric
WO1995006548A1 (en) * 1993-08-30 1995-03-09 Milliken Research Corporation Method and apparatus for cutting piled fabric
AU684109B2 (en) * 1993-08-30 1997-12-04 Milliken Research Corporation Method and apparatus for cutting piled fabric
US5832802A (en) * 1993-08-30 1998-11-10 Milliken Research Corporation Apparatus for cutting piled fabric
US5970839A (en) * 1996-10-02 1999-10-26 Murata Kikai Kabushiki Kaisha Work cutting apparatus
US20160114415A1 (en) * 2013-05-21 2016-04-28 Nibbler Sales AB Cutting apparatus
CN104384593A (zh) * 2014-11-14 2015-03-04 扬州固诚机床有限公司 一种剪板机刀头运行装置
CN106737915A (zh) * 2016-12-16 2017-05-31 滁州胜全农业开发有限公司 一种医疗用中药材双向切割装置
WO2018227283A1 (en) * 2017-06-12 2018-12-20 Mi Intégration S.E.N.C. Automated notching apparatus and method
CN107671262A (zh) * 2017-08-10 2018-02-09 伊之密机器人自动化科技(苏州)有限公司 一种机器人自动化的油压剪装置
CN109176619A (zh) * 2018-08-03 2019-01-11 安徽甬安雨具有限公司 一种雨衣生产用布料裁断装置
CN109807583A (zh) * 2019-01-25 2019-05-28 二重（德阳）重型装备有限公司 一种剪机刀片更换装置及更换方法
CN109807583B (zh) * 2019-01-25 2020-05-12 二重（德阳）重型装备有限公司 一种剪机刀片更换装置及更换方法
CN110548920A (zh) * 2019-09-29 2019-12-10 湖北鑫泰钢构工程有限公司 一种剪板机固定机构

Also Published As

Publication number Publication date
GB1446206A (en) 1976-08-18
CA994231A (en) 1976-08-03
GB1446207A (en) 1976-08-18
JPS577850B2 (de) 1982-02-13
JPS58196914A (ja) 1983-11-16
JPS4992687A (de) 1974-09-04
IT990119B (it) 1975-06-20
SE415539B (sv) 1980-10-13
FR2196217B1 (de) 1977-02-25
DE2341101A1 (de) 1974-03-14
FR2196217A1 (de) 1974-03-15
CH576320A5 (de) 1976-06-15

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