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US3371569A - Shear machine or the like - Google Patents

Shear machine or the like Download PDF

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Publication number
US3371569A
US3371569A US46721065A US3371569A US 3371569 A US3371569 A US 3371569A US 46721065 A US46721065 A US 46721065A US 3371569 A US3371569 A US 3371569A
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US
United States
Prior art keywords
ram
assembly
shearing
machine
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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English (en)
Inventor
Eugene W Pearson
Rolland A Richardson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pacific Press and Shear Corp
Original Assignee
Pacific Press and Shear Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pacific Press and Shear Corp filed Critical Pacific Press and Shear Corp
Priority to US46721065 priority Critical patent/US3371569A/en
Priority to GB5182465A priority patent/GB1105060A/en
Priority to FR42778A priority patent/FR1464251A/fr
Priority to BE673980D priority patent/BE673980A/xx
Priority to DE1502917A priority patent/DE1502917C3/de
Priority to DE19651777461 priority patent/DE1777461A1/de
Priority to NL6600896A priority patent/NL149728B/nl
Priority to JP2381266A priority patent/JPS517874B1/ja
Priority to SE764766A priority patent/SE336079B/xx
Priority to SE764866A priority patent/SE337155B/xx
Priority to SE764666A priority patent/SE335658B/xx
Application granted granted Critical
Publication of US3371569A publication Critical patent/US3371569A/en
Priority to JP3562975A priority patent/JPS5738400B1/ja
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
    • 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
    • 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
    • B23D15/08—Sheet shears with a blade moved in one plane, e.g. perpendicular to the surface of the sheet
    • 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
    • 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
    • Y10T83/8841—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
    • Y10T83/8858—Fluid pressure actuated
    • Y10T83/8864—Plural cylinders
    • 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

Definitions

  • FIGURE 1 is a front view in elevation of a shear machine embodying the present invention
  • FIGURE 2 is an end view in elevation of the machine of FIGURE 1;
  • FIGURE 3 is a plan view of the machine of FIGURE
  • FIGURE 4 is a view in section taken in the plane 4-4 of FIGURE 3;
  • FIGURE 5 is a view in section taken through a piston drive assembly of a machine of FIGURE 1;
  • FIGURES 6, 7 and 8 are views depicting ram backing roller details
  • FIGURE 9 is a schematic diagram of the basic hydraulic drive system involved in the machine of FIG- URE 1.
  • the same comprises a pair of side housings 3, 5, each having an upper recessed front edge 7, and a lower sloping front edge 9 to receive the mount one end of a work supporting assembly 11.
  • the work supporting assembly includes a front plate 13 spanning the side housings, and a table 15 welded along the upper edge of the front plate and braced by a plurality of gussets 17 welded into place between the table and the front plate.
  • Means are provided for supporting the lower blade 21 of the machine, adjacent the rear edge of the work support table 15, and this is accomplished by forming a blade receiving notch in the upper edge of the front plate 13 to receive the blade, the blade being bolted to the front plate, with the bolts made accessible through notches 25 formed in the work support table.
  • a ram assembly 29 for carrying the upper blade 31 of the machine at a rake angle for cooperation With the lower blade in the shearing of material.
  • This ram assembly includes a ram 33 having rearward 3,371,569 Patented Mar. 5, 1968 extensions 35 terminating in substantially vertical bearing surfaces 37 provided by slides 39 bolted to the edges of the extensions, the ram 33 being disposed at an angle to such surfaces and in a plane which will substantially intersect the line of cut between blades during a shearing stroke.
  • each side housing Mounted on the inner side of each side housing are bearing engagement means 41 for engaging the substan: tially vertical bearing surfaces 37 associated with the ram, whereby to guide the ram in its vertical movements.
  • Such bearing engaging means takes the form of a pair of vertically spaced roller brackets 45, each bolted to the side housing and notched to carry a roller 49 on a shaft 51, 53 respectively.
  • Structurally such spring means may take the form of a bracket 61 on the side housing, a rod 63 extending through a hole in the bracket and pivotally connected at one end to a point on the ram assembly. Its opposite end portion carries a spring 65 under compression between a spherical washer 67 adjacent the bracket, and a washer 69 carried on the free end of the rod.
  • the ram is powered by a pair of hydraulically actuated piston drive assemblies 75, 77 so disposed as to be capable of applying a vertical component of force to the ram assembly, of sufficient magnitude to produce shearing, and a simultaneous forward horizontal component of force of a magnitude approaching the spreading forces developed between blades during shearing.
  • Each of the piston drive assemblies comprises a pivotal anchor assembly 79 at an end of the ram, including a mounting sleeve or tube 81 afiixed to the ram, with its axis in substantially the plane of the rain, a pressure ring 83 at each end of the mounting sleeve, having a convex spherical surface, and a pressure disc 85 adjacent each of the pressure rings and formed with a concave surface complementary to the convex surface of its associated pressure ring.
  • a similar pivotal anchor assembly 89 is located at a lower fixed location on the machine, in substantial alignment with the pivotal anchor assembly 79 above.
  • a cylinder 91 which is provided with an attached rod 93 for this purpose, such rod extending through the pivotal assembly 89 and carrying at its exposed end, a clamping nut 95.
  • the cylinder 91 carries a drive piston 97 having a piston rod 99 extending through the opposite end of the cylinder, such piston rod connecting to the upper one of the pivotal anchor assemblies by passing therethrough and carrying at its exposed end'a holding nut 101.
  • Hydraulic fittings 103 at each end of the cylinder provide for flow of liquid into and out of the cylinder for drive purposes.
  • the piston drive assembly at each end of the machine When thus installed, the piston drive assembly at each end of the machine will be found to lie essentially in the plane of the ram 33, and inasmuch as the plane of the ram Wi-ll intersect substantially the cutting line of the blades during shearing, it follows that the forces exerted on the ram by the piston drive assemblies will be in the plane of the ram, and by reason of the fact that the direction of application of the drive forces to the ram thus lie in the plane of the ram and consequently at an angle to the vertical, the drive piston assemblies as previously indicated, are in position to develop both a vertical force for shearing, and simultaneously therewith, a forward horizontal component of force to resist or diminish any loading placed on the side housings in the opposite direction, namely rearwardly in the horizontal direction.
  • the piston drive assemblies In analyzing the movement of the ram with respect to the piston drive assemblies which power the same, it will be noted that as the ram descends, the piston drive assemblies will shorten up slightly and will swing rearwardly to a very slight angle about the lower fixed pivot assemblies. Accordingly, if at the start of a shearing operation, the application of driving force to the ram is such as will intersect the line of cut, then by the time the ram reaches the end of its shearing stroke, the piston drive assemblies may be slightly off, perhaps an eighth of an inch or so, with respect to the line of cut.
  • the shearing load will be gradually taken over by this offset piston drive assembly, and being that it is trailing the first piston drive assembly in the matter of angular swing toward the rear as the ram descends, it follows that toward the completion of the shearing operation, the force applied to the ram by the offset piston drive assembly will more nearly intersect the line of cut than would otherwise be the case were this piston drive assembly not so offset.
  • the ram may exercise a slight tendency to move laterally in its own plane.
  • such lateral movement is precluded in a manner utilizing roller friction, thereby minimizing friction loss to a negligible minimum.
  • a slideway 111 is bolted or otherwise afiixed to the inner surface of each side housing, in line with the rear edge of the proximate rearward extension 35 of the ram assembly, and aroller 113 is mounted on such rearward extension for rolling engagement with such slideway.
  • an opening is provided through the rearward extension and a hole drilled into the edge of such extension at that point, to support a roller shaft 117, on the exposed end of which is mounted the roller in rolling contact with the proximate slideway.
  • the machine may be provided with conventional type hold-down means for clamping work to the work table in anticipation of a shearing operation, or as we have illustrated in the drawings, the machine may be provided with hold-down means embodying the features of an invention for Hold-Down Means for a Shear Machine or the Like, Ser. No. 373,152, filed June 8, 1964, now Patent No. 3,345,897, in the name of Eugene W. Pearson, wherein the hold-down means may take the form of an inflatable tube 121 afiixed along the lower edge of a back-up member 123 supported above the work table in front of the shearing blades.
  • the back-up member is formed of plate material, and along its lower tube mounting edge, it is provided with a reverse bend 125 to create a horizontal surface to which the hold-down tube may be affixed as with a suitable adhesive, the reverse bend, at each end, also providing means with the aid of a spacer block 127, for bolting the back-up member to the work table, to thus support the back-up member.
  • the back-up member is provided with a series of windows or openings 129, through which an operator may view the shearing blades and thus afford him the opportunity to adjust the work properly in preparation for shearing.
  • a guard may be affixed to enclose the proximate piston rod 99 and upper pivotal assembly 79 with respect to the operator.
  • the eccentric shaft is caused to extend outwardly beyond the proximate side housing and on the exposed end of such shaft is mounted a manually shiftable index lever 157 carrying a spring biased pin 159 at its end, for selectively engaging any one of a series of index holes 161 provided in the side housing.
  • each side housing is recessed, as previously described, this being permitted by the fact that no shearing load is transmitted to this portion of the side housing, and such recessed edge in turn permitting of the angular disposition of the proximate piston drive assembly, whereby the entire shearing load may be transmitted to the pivotal location of anchorage at the lower front edge of the side housing, while at the same time causing such drive assembly to develop the forwardly directed horizontal component tending to neutralize the spreading forces developed between the shear blades during shearing.
  • the side housings of the machine of the present invention in effect become more or less mere supporting members for the other components of the machine, as distinguished from stress absorbing members, such as in a conventional type machine.
  • the piston drive assemblies may be alike and supplied with hydraulic fluid in parallel, though we prefer to connect them in series relationship, whereby the first drive piston assembly 77 becomes the master drive assembly, while the remaining one 75 becomes the slave drive assembly.
  • the area of the lower side of the master piston should equal the area of the upper side of the slave piston, in accordance with known practice, to assure in the absence of leakage and temperature differences, normal flow rates to the cylinders such as will produce equal rates of travel at each end of the ram.
  • Hydraulic fluid is pumped from a tank 165 by means of a pump 167 through a check valve 169 to the piston drive assemblies in series, the pump being coupled to a drive motor 171.
  • a control valve assembly involving a central section 177 and adjacent end sections 179, 181, under control of solenoids, 183, respectively, one at each end and adapted to produce shift of the valve assembly in one direction or the other from a neutral or central position, depending on which of the solenoids is energized.
  • the pump output beyond the check valve is connected by a line 189, directly to the upper end of the master cylinder, while a branch line 191 terminates at the main valve assembly 175 and through the center section connects with a return line 195 to tank.
  • the lower end of the master cylinder is flow connected by an interconnecting line 197 to the upper end of the slave cylinder, while the lower end of the slave cylinder is flow connected by a line 199 to the main valve assembly.
  • the branch line 191 is connected to tank, while the return line 199 from the slave cylinder is blocked off at this valve assembly.
  • the drive piston assemblies are shorted by the return line 195 to the tank and the machine is without power.
  • Each rake angle control valve assembly involves two sections, one 215 to open a circuit and one 217 to close it.
  • One such valve assembly' is flow coupled between the interconnecting line joining the two cylinders and the tank, whereby in one position, it will drain hack to the tank, hydraulic fluid which would otherwise go to the slave piston to drive the same. Under such conditions, the master piston will drive the proximate end of the ram downwardly to effect an increase in the rake angle of the ram.
  • the other rake angle control valve assembly is coupled between the interconnecting flow line and the pressure side of the pump, whereby when adjusted to complete the flow line from the pump to the connecting line between the cylinders, hydraulic fluid will be pumped into the connecting line instead of being drained therefrom.
  • hydraulic fluid Being that the pressure built up thereby in the lower portion of the master cylinder will be slightly higher than that of the fluid reaching the upper side of this cylinder, due to the slight pressure drop across the check valve 169, and with the greater piston surface exposed to the higher pressure, the associated piston will rise to lift that end of the ram, to thereby decrease the prevailing rake angle.
  • the rake angle control valves will still function to effect adjustments of the rake angle.
  • draining of fluid from the interconnecting line to tank will cause the master piston to descend and lower its end of the ram, while the fluid emerging from the lower end of the master cylinder will by-pass the slave cylinder, thus increasing the rake angle.
  • observable means may be mounted on the ram proper to indicate rake angle control adjustments while they are being effected.
  • a pendulum supported on the ram for example, and operating in conjunction with a scale on the ram, may provide one means for accomplishing such visual indication, while a bubble glass, such as employed in a level, may constitute an additional means to provide such a visual indication.
  • an electrical control circuit may be tied in with such registering devices to automatically control the rake angle control valve assembly when a particular rake angle adjustment has been reached.
  • a relief valve assembly 225 adapted to connect the pump output back to the tank when the pump pressure exceeds a maximum safe value.
  • this relief valve assembly is tied to a relief pilot valve assembly 227 which is coupled thereto and during non-operating periods of the machine, normally shorts out the relief valve assembly hydraulically.
  • This hold-down tube is a closed ended tube having an air intake coupling at one end for connecting the same to a two section solenoid operated valve assembly 231, one section being adapted to connect a supply of air under pressure to said tube, to produce inflation thereof, while the remaining section of the valve assembly is alapted to provide for instant release of air from such tube.
  • This valve assembly like those previously described, is preferably solenoid operated.
  • control relay 235 When the machine and its various valve control systems are electrically controlled, 2.
  • the control relay and up solenoid windings are energizable through two pairs of normally closed contacts 251, 253 associated with back travel limit switches 255, 257 respectively, the contacts being in series with the normally closed contacts 259 of a three position foot switch 261, having two pairs of normally open contacts 263 and 265, representing intermediate and extreme positions respectively.
  • the back travel limit switches 255, 257 are each mounted above a different end of the ram, where at least one pair is in position to be engaged by such ram and opened, when the ram reaches the upper limit of its return stroke.
  • the opening of either pair of normally closed contacts 251, 253, will open the circuit to the control relay and up solenoid with the foot switch in its normally closed position.
  • the normally open contacts are adapted, when closed, to parallel the winding 239 of the pilot relief valve assembly with the up solenoid and control relay 235 while the normally closed contacts 271 place the pilot valve solenoid in parallel with the down solenoid winding 183, which in turn is connected through two pairs of normally closed contacts 275, 277 associated with down limit switches 281, 283, in series with the normally open lower contacts 265 of the foot switch to the other side of the power supply source. Also conncctable through these normally open contacts of the foot switch, is the solenoid 241 of the air control valve assembly 231.
  • the two pairs of down limit switch contacts 275, 277 are each located adjacent a different lower corner of the ram where at least one pair will be engaged by the proximate corner of such ram when it reaches the lower end of its stroke, to open that pair of contacts so engaged.
  • solenoid 241 of the air control valve assembly 231, associated with the hold-down means will be energized, and simultaneously therewith, the down solenoid 183. Though both will be energized simultaneously, the hold-down tube will inflate practically instantaneously and before the ram can execute a down stroke to shear any work. As the ram approaches the lower limit of its down stroke, it will engage at least one pair 275 or 277, of the down limit switch contacts, depending on the rake angle adjustment of the ram, and open the circuit to the down solenoid 183, thus removing hydraulic pressure from the ram by causing the main valve assembly to restore itself to neutral.
  • pilot relief valve solenoid will continue to be energized during the operation of the machine, which means that it will block discharge through its associated valve and permit the pump to build up pressure across the relief valve assembly 225 for operation of the machine, whereas during non-operating periods of the machine, the pump will normally discharge through the pilot relief valve assembly back to tank, which in effect means that the pump is idling.
  • Undesired deviations from a preset rake angle of the ram may be avoided through reliance on a control system, similar to that illustrated and described in Patent No. 2,906,096 to Rolland A. Richardson for Precision Control System for Press Brakes or the like wherein the control system in question was employed as a leveling means for the ram in a press brake type machine.
  • the recessed upper front edges of the side housings provide room for long pieces of work in much the same manner as the conventional throat. If it is found necessary to utilize this space for work requirements, the piston rods 99 may be formed to include a loop in the direction of the recessed cage. This can be tolerated in view of the shortness of the stroke in a machine of this type.
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearing,
  • a shear machine comprising a pair of said housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearing,
  • said means carried by said side housings for hearing engagement with said substantially vertical bearing surfaces, said means including a pair of vertically spaced roller brackets mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means including a piston drive assembly adjacent each side housing and operating in substantially the plane of said ram, with one end pivotably anchored to said ram and the other end pivotally anchored to a fixed location on said machine in substantially the plane of said ram.
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearing,
  • said means including a pair of vertically spaced roller brackets mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means for applying a rearward horizontal component of force to said ram assembly to normally hold said ram assembly in sliding engagement with said rollers, said means including a spring adjacent each side housing and anchored under stress between said ram assembly and a point on its associated side housing,
  • said means including a piston drive assembly adjacent each side housing and operating in substantially the plane of said ram, with one end pivotably anchored to said ram and the other end pivotally anchored to a fixed location on said machine in substantially the plane of said ram,
  • a shear machine comprising a pair of side housings
  • said means for supporting a lower blade adjacent the rear means carried by said side housings for bearing engagement with said substantially vertical bearing surfaces, said means including a pair of vertically spaced roller brackets mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means for applying a rearward horizontal component of force to said ram assembly to normally hold said ram assembly in sliding engagement with said rollers, said means including a spring adjacent each side housing and anchored under stress between said ram assembly and a point on its associated side housing,
  • said means including a piston drive assembly adjacent each side housing and operating in substantially the plane of said ram, with one end pivotably anchored to said ram and the other end pivctally anchored to a fixed location on said machine in substantially the plane of said ram, that one of said piston drive assemblies at the higher end of said upper blade, being slightly offset forward with respect to said other piston drive assembly,
  • a shear machine comprising pair of side housings,
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearing,
  • said means including a roller bracket mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means for adjusting clearance between such blades said means including an eccentric shaft through each of the said rollers, and means for angularly adjusting the shaft through each of said rollers,
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extension terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearing,
  • said means including a pair of vertically spaced roller brackets mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means including an eccentric shaft through each each of the lower rollers of each pair, and means for angularly adjusting the shaft through each of said lower rollers,
  • said means including a piston drive assembly adjacent each side housing and operating in substantially the plane of said ram, with one end pivotably anchored to said ram and the other end pivotably anchored to a fixed location on said machine in substantially the plane of said ram.
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearr means carried by said side housings for bearing engagement with said substantially vertical bearing surfaces,
  • each of said piston drive assemblies comprising a pivotal anchor assembly at each end of said ram, a pivotal anchor assembly at a fixed location on said machine at each end thereof and in substantial alignment with one of the other pivotal anchor assemblies, a drive cylinder between aligned pivotal anchor assemblies at each end of said machine, a piston in each said drive cylinder having a piston rod extending through one end of said drive cylinder means connecting said piston rod to one of said pivotal anchor assemblies and means connecting said drive cylinder to the other of said aligned pivotal anchor assemblies,
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearmeans carried by said side housings for bearing engagement with said substantially vertical bearingsurfaces,
  • each of said piston drive assemblies comprising a pivotal anchor assembly at each end of said ram, a similar pivotal anchor assembly at a fixed location on said machine at each end thereof and in substantial alignment with one of the other pivotal anchor assemblies, a drive cylinder between aligned pivotal anchor assemblies at each end of said machine, a piston in each said drive cylinder having a piston rod extending through one end of said drive cylinder and connected to one of said pivotal anchor assemblies, and a fixed rod extending from said drive cylinder at its opposite end and connected to the other'of said pivotal anchor assemblies,
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said rarn assembly including a ram having rearward extensions terminating in substantially vertical bearing surfaces, with said ram disposed at an angle to said surfaces and in a plane substantially intersecting the line of cut during shearmeans carried by said side housings for hearing engagement with said substantially vertical bearing surfaces,
  • each of said piston drive assemblies comprising a pivotal anchor assembly at an end of said ram including a mounting tube affixed to said ram with its axis in substantially the plane of said ram, a pressure ring at each end of said mounting tube and having a convex spherical surface, a pressure disc adjacent each of said pressure rings and having a concave surface complementary to the convex surface of its associated pressure ring, a'similar pivotal anchor assembly at a fixed location on said machine, at each end thereof and in substantial alignment with the pivotal anchor assembly above, a drive cylinder between aligned pivotal anchor assemblies at each end of said machine, a piston in each said cylinder having a piston rod extending through one end of said drive cylinder and one of said pivotal anchor assemblies and affixed to said pivotal anchor assembly, and a fixed rod connected
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having substantially vertical bearing surfaces,
  • said means including a roller bracket mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means for adjusting clearance between such blades said means including eccentric shaft means through said rollers, and means for angularly adjusting said eccentric shaft means,
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said rarn assembly including a ram having rear substantially vertical bearing surfaces,
  • said means carried by said side housings for hearing engagement with said substantially vertical bearing surfaces, said means including a roller bracket mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means including an eccentric shaft through each of said rollers, and means for angularly adjusting the shaft through each of said rollers, said means including a crank handle on said shaft and index means on the proximate side housing in association with said handle,
  • a shear machine comp-rising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rear substantially vertical bearing surfaces,
  • said means carried by said side housings for hearing engagement with said substantially vertical bearing surfaces, said means including a roller bracket mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means including an eccentric shaft through each of said rollers, and means for angularly adjusting the shaft through each of said rollers, said means including a crank handle on said shaft and an index plate afiixed to the proximate side housing in asso-- ciation with said handle,
  • said means including a roller bracket carried by said ram assembly adjacent each end thereof, and a bearing roller rotatably carried by said bracket in contact with the proximate side housing.
  • a shear machine comprising a pair of side housings
  • a ram assembly for carrying an upper blade at a rake angle for cooperation with such lower blade in the shearing of material, said ram assembly including a ram having rear substantially vertical bearing surfaces,
  • said means carried by said side housings for hearing engagement with said substantially vertical bearing surfaces, said means including a pair of vertically spaced roller brackets mounted on each side housing, and a bearing roller rotatably carried by each of said brackets for contact with said bearing surfaces,
  • said means for applying a rearward horizontal component of force to said ram assembly to normally hold said ram assembly in sliding engagement with said rollers, said means including a spring adjacent each side housing and anchored under stress between said ram assembly and a point on its associated side housing,
  • said means including an eccentric shaft through each of the lower rollers of each pair, and means for angularly adjusting the shaft through each of said lower rollers, said means including a crank handle of said shaft and an index plate afiixed to the proximate side housing in association with said handle,
  • a machine comprising a pair of side housings
  • a ram assembly extending from one side housing to the other
  • a pair of drive piston assemblies each pivotally anchored to a low frontal location in said machine and having means for drive connection to said ram assembly, said drive piston assemblies lying in a plane at a rearwardly directed angle, whereby a work load will be transmitted through said drive assemblies directly to the frontal base portion of said machine, and any forces which might normally be transmitted horizontally in the rearward direction during operation on Work, will be minimized by a forward horizontal component of force developed by said drive assemblies and attributable to said angular position thereof.
  • a machine comprising a pair of side housings
  • a ram assembly extending from one side housing to the other, and including a ram lying in a rearwardly tilted plane
  • a pair of drive piston assemblies each pivotally anchored to a low frontal location in said machine in proximity to one of said side housings and having means for drive connection to said ram assembly, said drive piston assemblies lying in substantially the plane of said ram, whereby said ram will be substantially free of distortion stresses, and a work load will be transmitted through said drive assemblies directly to the frontal base portion of said machine, and any forces which might normally be transmitted horizontally in the rearward direction during operation on work, will be minimized by a forward horizontal component of force developed by said drive assemblies and attributable to said angular position thereof.
  • a machine of the type employing a ram and a tool affixed thereto for performing operation on work, said machine comprising a ram assembly including a ram,
  • piston drive means supporting said ram assembly for reciprocal movement
  • rollers mounted behind said ram assembly for rolling engagement therewith during reciprocal movement of said ram assembly, said rollers constituting the main back support for said ram assembly and permitting freedom in the changing of the rake angle of said ram, and said ram assembly having no obstruction to angular adjustment thereof,
  • a ram assembly for a shear machine or the like comprising a ram
  • said ram having means for afiixing a tool for operation in a plane substantially parallel to the plane of said bearing surfaces.
  • a ram assembly for a shear machine or the like comprising a ram
  • said ram having means for affixing a tool for operation in a plane substantially parallel to the plane of said bearing surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Press Drives And Press Lines (AREA)
US46721065 1965-06-28 1965-06-28 Shear machine or the like Expired - Lifetime US3371569A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US46721065 US3371569A (en) 1965-06-28 1965-06-28 Shear machine or the like
GB5182465A GB1105060A (en) 1965-06-28 1965-12-07 Improvements in or relating to shear machines
FR42778A FR1464251A (fr) 1965-06-28 1965-12-17 Machine à cisailler et commande du coulisseau d'une telle machine
BE673980D BE673980A (nl) 1965-06-28 1965-12-17
DE19651777461 DE1777461A1 (de) 1965-06-28 1965-12-20 Abschermaschine
DE1502917A DE1502917C3 (de) 1965-06-28 1965-12-20 Schermaschine
NL6600896A NL149728B (nl) 1965-06-28 1966-01-24 Schaarinrichting.
JP2381266A JPS517874B1 (nl) 1965-06-28 1966-04-16
SE764766A SE336079B (nl) 1965-06-28 1966-06-03
SE764866A SE337155B (nl) 1965-06-28 1966-06-03
SE764666A SE335658B (nl) 1965-06-28 1966-06-03
JP3562975A JPS5738400B1 (nl) 1965-06-28 1975-03-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46721065 US3371569A (en) 1965-06-28 1965-06-28 Shear machine or the like

Publications (1)

Publication Number Publication Date
US3371569A true US3371569A (en) 1968-03-05

Family

ID=23854824

Family Applications (1)

Application Number Title Priority Date Filing Date
US46721065 Expired - Lifetime US3371569A (en) 1965-06-28 1965-06-28 Shear machine or the like

Country Status (8)

Country Link
US (1) US3371569A (nl)
JP (2) JPS517874B1 (nl)
BE (1) BE673980A (nl)
DE (2) DE1777461A1 (nl)
FR (1) FR1464251A (nl)
GB (1) GB1105060A (nl)
NL (1) NL149728B (nl)
SE (3) SE337155B (nl)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495489A (en) * 1967-01-14 1970-02-17 Steel Construction & Eng Co No Guillotines
US3756110A (en) * 1970-02-26 1973-09-04 Arx Paul Von Table shear with gap-adjusting means
US3760669A (en) * 1972-02-23 1973-09-25 Rosenthal Manuf Co Sheet material feeding and cutting apparatus and control system therefor
US3892155A (en) * 1973-10-29 1975-07-01 Summit Metal Fabricating Inc Adjustable metal shearing machine
US3915044A (en) * 1974-11-18 1975-10-28 Erich Bley Hydraulically operated bench-mounted press unit
US3942400A (en) * 1972-08-14 1976-03-09 Hurco Manufacturing Company Inc. Shear mounting for corner shearing machine
US3968714A (en) * 1974-01-11 1976-07-13 Charles Kuchyt Heavy duty shear
US4182186A (en) * 1978-03-28 1980-01-08 Hirsch Louis W Notching mechanism
US4252041A (en) * 1978-08-04 1981-02-24 Promecam Sisson-Lehmann Guillotine shearing machine
US4331020A (en) * 1979-07-05 1982-05-25 Promecam Sisson-Lehmann Dimension indicator for sheet-metal folding or shearing machine tools
US4625605A (en) * 1982-12-06 1986-12-02 John R. Buta Automatic knife alignment for shear
US4679473A (en) * 1983-11-09 1987-07-14 Amada Company, Limited Shearing machine
US4798115A (en) * 1986-06-12 1989-01-17 Kraemer & Grebe Gmbh & Co. Kg Maschinenfabrik Pneumatic drive for punching, cutting and stamping devices
WO1992003910A1 (en) * 1990-08-23 1992-03-19 Harvesting Systems Ltd. Harvesting apparatus and method
US5394782A (en) * 1993-06-07 1995-03-07 Peddinghaus Corporation Shearing apparatus
CN103878848A (zh) * 2012-12-20 2014-06-25 王斌 板材剪切机
CN104028825A (zh) * 2014-05-22 2014-09-10 武汉钢铁(集团)公司 外伸双缸液压下切式切分剪
US20150321270A1 (en) * 2012-12-28 2015-11-12 Sms Siemag Aktiengesellschaft Co-moving hydraulic shears without stand
CN106180861A (zh) * 2016-08-31 2016-12-07 安徽省华夏机床制造有限公司 一种闸式剪板机液压系统
CN108213545A (zh) * 2018-03-19 2018-06-29 安徽省星河重工科技有限公司 一种专用于流水线生产的薄板剪切机及其方法
CN111531219A (zh) * 2020-05-11 2020-08-14 朱佳琦 一种液压剪切机床的液压自动控制系统
CN116117884A (zh) * 2023-04-14 2023-05-16 济南正恒聚氨酯材料有限公司 一种聚氨酯板生产切割装置
CN116251990A (zh) * 2023-03-24 2023-06-13 湖北鑫威机床股份有限公司 一种可精准自动切割的钢板剪切设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58205998A (ja) * 1982-05-26 1983-12-01 Fujitsu Ltd アクセス例外処理方式
CH665372A5 (de) * 1983-11-09 1988-05-13 Amada Co Ltd Blechschere.
FR2564346B1 (fr) * 1984-05-17 1987-11-13 Promecan Sisson Lehmann Cisaille hydraulique
JPS6120160A (ja) * 1984-07-09 1986-01-28 Hitachi Ltd アドレツシング例外検出方式
JPS6195464A (ja) * 1984-10-16 1986-05-14 Nippon Telegr & Teleph Corp <Ntt> デ−タ保護方式
SE463962B (sv) * 1985-05-08 1991-02-18 Amada Co Ltd Styranordning foer en plaatbearbetningsanordning
JPS62126448A (ja) * 1985-11-27 1987-06-08 Fuji Electric Co Ltd メモリの管理・保護方式
GB8629804D0 (en) * 1986-12-12 1987-01-21 Greenwood Electronic Ltd W Guillotines
GB2405118B (en) * 2003-08-18 2006-02-15 Vai Ind Compact shear
JP2011088235A (ja) * 2009-10-21 2011-05-06 Kurimoto Ltd 押切プレス
CN109520866B (zh) * 2019-01-25 2023-12-12 河南交通职业技术学院 一种压剪试验装置
CN112621235B (zh) * 2020-11-12 2021-12-10 埃锡尔(山东)智能设备有限公司 一种数控开平剪板一体机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE459241C (de) * 1927-02-25 1928-04-30 Weingarten Vorm Hch Schatz A G Schutzvorrichtung an Scheren
GB467952A (en) * 1936-01-17 1937-06-25 Renault Louis Improvements in devices for clamping a workpiece on a support
US3100414A (en) * 1961-06-26 1963-08-13 Watkins Ellwood Oscillating wire cutter
US3129625A (en) * 1963-01-07 1964-04-21 Niagara Machine & Tool Works Level and slope control for reciprocating machines
US3131589A (en) * 1961-02-06 1964-05-05 Cincinnati Shaper Co Leveling and rake control for hydraulic shear
US3207019A (en) * 1961-03-11 1965-09-21 Pirelli Machine for shearing sheet material
US3242786A (en) * 1962-01-19 1966-03-29 Giordano Roger Francois Shearing machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE459241C (de) * 1927-02-25 1928-04-30 Weingarten Vorm Hch Schatz A G Schutzvorrichtung an Scheren
GB467952A (en) * 1936-01-17 1937-06-25 Renault Louis Improvements in devices for clamping a workpiece on a support
US3131589A (en) * 1961-02-06 1964-05-05 Cincinnati Shaper Co Leveling and rake control for hydraulic shear
US3207019A (en) * 1961-03-11 1965-09-21 Pirelli Machine for shearing sheet material
US3100414A (en) * 1961-06-26 1963-08-13 Watkins Ellwood Oscillating wire cutter
US3242786A (en) * 1962-01-19 1966-03-29 Giordano Roger Francois Shearing machine
US3129625A (en) * 1963-01-07 1964-04-21 Niagara Machine & Tool Works Level and slope control for reciprocating machines

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495489A (en) * 1967-01-14 1970-02-17 Steel Construction & Eng Co No Guillotines
US3756110A (en) * 1970-02-26 1973-09-04 Arx Paul Von Table shear with gap-adjusting means
US3760669A (en) * 1972-02-23 1973-09-25 Rosenthal Manuf Co Sheet material feeding and cutting apparatus and control system therefor
US3942400A (en) * 1972-08-14 1976-03-09 Hurco Manufacturing Company Inc. Shear mounting for corner shearing machine
US3892155A (en) * 1973-10-29 1975-07-01 Summit Metal Fabricating Inc Adjustable metal shearing machine
US3968714A (en) * 1974-01-11 1976-07-13 Charles Kuchyt Heavy duty shear
US3915044A (en) * 1974-11-18 1975-10-28 Erich Bley Hydraulically operated bench-mounted press unit
US4182186A (en) * 1978-03-28 1980-01-08 Hirsch Louis W Notching mechanism
US4252041A (en) * 1978-08-04 1981-02-24 Promecam Sisson-Lehmann Guillotine shearing machine
US4331020A (en) * 1979-07-05 1982-05-25 Promecam Sisson-Lehmann Dimension indicator for sheet-metal folding or shearing machine tools
US4625605A (en) * 1982-12-06 1986-12-02 John R. Buta Automatic knife alignment for shear
US4679473A (en) * 1983-11-09 1987-07-14 Amada Company, Limited Shearing machine
US4798115A (en) * 1986-06-12 1989-01-17 Kraemer & Grebe Gmbh & Co. Kg Maschinenfabrik Pneumatic drive for punching, cutting and stamping devices
WO1992003910A1 (en) * 1990-08-23 1992-03-19 Harvesting Systems Ltd. Harvesting apparatus and method
US5394782A (en) * 1993-06-07 1995-03-07 Peddinghaus Corporation Shearing apparatus
CN103878848A (zh) * 2012-12-20 2014-06-25 王斌 板材剪切机
US20150321270A1 (en) * 2012-12-28 2015-11-12 Sms Siemag Aktiengesellschaft Co-moving hydraulic shears without stand
CN104028825A (zh) * 2014-05-22 2014-09-10 武汉钢铁(集团)公司 外伸双缸液压下切式切分剪
CN106180861A (zh) * 2016-08-31 2016-12-07 安徽省华夏机床制造有限公司 一种闸式剪板机液压系统
CN108213545A (zh) * 2018-03-19 2018-06-29 安徽省星河重工科技有限公司 一种专用于流水线生产的薄板剪切机及其方法
CN108213545B (zh) * 2018-03-19 2024-02-23 安徽省星河重工科技有限公司 一种专用于流水线生产的薄板剪切机及其方法
CN111531219A (zh) * 2020-05-11 2020-08-14 朱佳琦 一种液压剪切机床的液压自动控制系统
CN116251990A (zh) * 2023-03-24 2023-06-13 湖北鑫威机床股份有限公司 一种可精准自动切割的钢板剪切设备
CN116251990B (zh) * 2023-03-24 2023-09-08 湖北鑫威机床股份有限公司 一种可精准自动切割的钢板剪切设备
CN116117884A (zh) * 2023-04-14 2023-05-16 济南正恒聚氨酯材料有限公司 一种聚氨酯板生产切割装置

Also Published As

Publication number Publication date
DE1502917C3 (de) 1979-07-26
NL149728B (nl) 1976-06-15
JPS5738400B1 (nl) 1982-08-14
BE673980A (nl) 1966-04-15
SE336079B (nl) 1971-06-21
DE1502917A1 (de) 1970-10-08
FR1464251A (fr) 1966-12-30
JPS517874B1 (nl) 1976-03-11
DE1777461A1 (de) 1976-07-29
SE337155B (nl) 1971-07-26
GB1105060A (en) 1968-03-06
DE1502917B2 (de) 1978-11-16
SE335658B (nl) 1971-06-01
NL6600896A (nl) 1966-12-29

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