EP0418915B1 - Schneidapparat - Google Patents

Schneidapparat Download PDF

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Publication number
EP0418915B1
EP0418915B1 EP90118185A EP90118185A EP0418915B1 EP 0418915 B1 EP0418915 B1 EP 0418915B1 EP 90118185 A EP90118185 A EP 90118185A EP 90118185 A EP90118185 A EP 90118185A EP 0418915 B1 EP0418915 B1 EP 0418915B1
Authority
EP
European Patent Office
Prior art keywords
flap
cutting
flaps
pair
chain body
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
Application number
EP90118185A
Other languages
English (en)
French (fr)
Other versions
EP0418915A2 (de
EP0418915A3 (en
Inventor
Katsumi C/O Shoohin Kaihatsu Center Mogi
Hiro C/O Shoohin Kaihatsu Center Ohzeki
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials 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
Priority claimed from JP1247674A external-priority patent/JP2701478B2/ja
Priority claimed from JP29883589A external-priority patent/JPH03161215A/ja
Priority claimed from JP1322237A external-priority patent/JP2727711B2/ja
Priority claimed from JP12256290A external-priority patent/JPH03205111A/ja
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to EP94109553A priority Critical patent/EP0623437B1/de
Publication of EP0418915A2 publication Critical patent/EP0418915A2/de
Publication of EP0418915A3 publication Critical patent/EP0418915A3/en
Application granted granted Critical
Publication of EP0418915B1 publication Critical patent/EP0418915B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/145—Cutter elements having plural teeth on a single link
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/144—Cutter elements having cutting inserts or exchangeable cutting teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/148—Saw chains with means permitting replacement of cutter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/082—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • B28D1/125—Saw chains; rod-like saw blades; saw cables with exchangeable cutter bits or cutter segments

Definitions

  • the present invention relates to a cutting apparatus for cutting large objects of different materials, such as stone, wood and other substances according to the preamble of claim 1.
  • cutting a large stone is carried out with a cutting blade, a band saw, a wire saw and other cutting methods.
  • a cutting blade is a device containing a plurality of cutting bits in which chips of abrasive grains, such as fine diamond abrasive grains are firmly embedded.
  • the abrasive layers are bonded to an outer peripheral surface of a disc-like metal base formed by roll processing, by means of metal bond or the like at equal intervals.
  • the maximum cutting blade manufactured has a diameter of 3.5 m and a metal base thickness of 10 mm.
  • the maximum thickness of a material which can be cut is of the order of 1.5 m, and the cutting loss is of the order of 15 mm.
  • a band saw is a device having a thin strip of metal, which is wide and which is of the order of 1 mm to 6 mm in thickness, is welded to form an endless loop, and the abrasive grains and chips are firmly bonded to one side of the endless thin strip.
  • the endless thin strip is driven by a pair of rotating circular wheels, whose axes are arranged in parallel relation to each other. The wheels are rotated at high speed, thereby cutting stones or the like with the edge of any parallel sections between the rotor bodies.
  • the cutting blade has the following problem. That is, if the diameter of the cutting blade is increased, the thickness of the metal base must also be increased to provide the blade rigidity. For this reason, the cutting loss increases, and the yield from the object is diminished. Further, twist or torsion occurs at the forward edge of cutting as a result of an increase in the cutting resistance. Thus, the cutting accuracy is reduced.
  • the cutting blade has also the following problems. Since manufacturing of a metal base exceeding 3.5 meter in diameter is extremely difficult, there is a limit in thickness of the object capable of being cut, as described previously. Moreover, such large cutting blade is extremely inconvenient for handling and transporting or the like; also the noises due to vibration at cutting are severe.
  • the metal base is thin and long in length, and the cutting loss is of the order of 4 mm to 8 mm which is relatively small.
  • the yield is superior.
  • the band saw is wound around a pair of large-diameter rotating wheels, and accordingly, the cutting apparatus increases in size, and a large equipment space is required.
  • the band saw has the following problem. That is, bending stress is repeatedly applied to bent sections of the metal base wrapped around the rotating wheels and metal fatigue is apt to be accumulated in the metal base. Thus, the metal base is broken relatively prematurely, and the service life of the metal base is short.
  • the wire saw since the chips in the abrasive-grain-layer are large in diameter, the cutting allowance must be large in comparison with the size of the cutting blade or the band saw. Further, the wire saw is circular in cross-section, and has, by itself, no means for restricting the cutting direction. Accordingly, the wire saw is inferior to other cutting methods in flatness and surface roughness of the cut surface. Furthermore, in the wire saw, since large bending stress is applied to both end portions of each of the abrasive-grain-layers during cutting, the service life is short. Breakage of the wire is dangerous because the ends of the wire jump up and down like a whip.
  • a cutting apparatus for cutting a workpiece according to the preamble of claim 1 is disclosed in BE-A-518164.
  • This known cutting apparatus comprises an endless chain body, a plurality of sprockets and a rigid backplate supporting the chain body towards a workpiece. Further, a rotating means for rotating the sprocket is provided as well as a moving means for moving the workpiece or the chain body towards each other to cut said workpiece with said chain body.
  • US-A-614003 discloses a cutting apparatus comprising an endless chain body having a plurality of plate-like flaps connected to each other for angular movement in a common plane.
  • a plurality of sprockets are provided supporting said chain body in tension and a means for activating the rotational movement of the sprockets in cooperation with the chain body is further provided.
  • An object of the invention is to provide a cutting apparatus having improved performance characteristics with respect to the above discussed problems. This object is solved by a cutting apparatus according to claim 1.
  • This cutting apparatus provides cutting action by rotating the chain body equipped with cutting devices around at least a pair of sprockets to drive the chain body which is supported at the linear section of the chain body by means of a chain guide disposed on a rigid backplate.
  • the cutting is carried out by moving either the chain cutter and sprockets towards the object or the object to the chain body.
  • the depth of cut is not limited by the thickness of the cutting device of the equipment.
  • the flaps each in the shape of a plain plate, are connected to each other for angular movement in the cutting plane to form the endless chain body, it is possible to obtain sufficient tension-resisting force by using the flaps of relatively thin thickness.
  • the thickness of each of the cutting devices can be reduced, thus, the cutting cost of the object can be reduced leading to improved yield.
  • the flaps are flexibly connected to each other, stress fatigue does not occur in the curved region of the chain cutter, and it is possible to use the chain cutter with a higher applied tension force than in conventional cutting devices. Accordingly, the cutting service life is longer than in the conventional cutting tools, and it is possible to enhance cutting efficiency.
  • the chain cutter is supported at the inner straight section of the chain by a support section of the rigid backplate, it is possible to support a high load required for large cutting bite.
  • the length of the chain body can be freely increased or decreased.
  • the object capable of being cut is not restricted in size or dimension.
  • the individual flaps are small in size and the same in configuration as each other. Accordingly, the flaps can be mass produced thereby reducing the cost of the entire chain cutter.
  • the flatness and surface roughness of the cut surface are superior, and no one-sided wear occurs on the cutting devices.
  • the service efficiency of the cutting devices is high.
  • the chain cutter is in the shape of a chain, and is relatively light in weight, handling and transportation or the like are easy. Vibration due to cutting is attenuated at the connecting sections between the flaps. Thus, it is possible to reduce the noises as compared with other cutting tools.
  • Figs. 1 is a front view of the cutting apparatus.
  • Fig. 2 is a plan view of the cutting apparatus with a partial horizontal cut-away.
  • Figs. 3 and 4 are a sectional front view and a cross-sectional view taken along the line D-D, respectively, from a first preferred embodiment of the invention.
  • Figs. 5 and 6 are a front view and a left side view, respectively, of the flap from the first preferred embodiment.
  • Fig. 7 is a left side view of a modified flap from the first preferred embodiment.
  • Figs. 8 and 9 are a front view and a left side, respectively, of the flap from a second preferred embodiment.
  • Fig. 10 is a left side view of a modified flap illustrated in Figs. 8 and 9.
  • Figs. 11 and 12 are a front view and a left side view, respectively, of the flap from a third preferred embodiment.
  • Fig. 13 is a left side view of a modified flap illustrated in Figs. 11 and 12;
  • Fig. 14 is a front view showing a mounting and demounting method of a flap from an fourth preferred embodiment.
  • Figs. 15 and 16 are a front view and a left side view, respectively, of the flap from a fifth preferred embodiment.
  • Fig. 17 is a left side view of a modified flap illustrated in Figs. 15 and 16;
  • Fig. 18 is a front view showing a mounting and demounting method of the flaps according to the fifth preferred embodiment.
  • Figs. 19 and 20 are a front view and a left side view, respectively, of the flap from a sixth preferred embodiment.
  • Fig. 21 is a front view of the flap from a seventh preferred embodiment.
  • Fig. 22 is a cross-sectional view taken along the line E-E showing a mounting and demounting method for the flaps illustrated in Fig. 21.
  • Fig. 23 is a cross-sectional view of a cutting apparatus from a eighth preferred embodiment.
  • Fig. 24 is a plan view of a cutting apparatus from a ninth preferred embodiment.
  • Fig. 25 is a cross-sectional view of the sprocket and the chain cutter from a tenth preferred embodiment.
  • Fig. 26 is a cross-sectional view to illustrate the construction of the backplate from an eleventh preferred embodiment.
  • Fig. 27 is an angle view of a modified backplate shown in Fig. 26.
  • Figure 1 is a front view and Figure 2 is a plan view with a partial cut-away of the column section of a cutting apparatus for according to a first embodiment of the invention.
  • C represents a chain of cutters (hereinafter referred to as the chain cutter) and is a primary component of the cutting apparatus. The details of this component will be explained in the following.
  • the chain cutter C is comprising an endless chain body 2 in which a plurality of flaps 1, each in the shape of a plain or flat plate, is connected to each other, as shown in Fig. 3, to provide a flexible angular movement within a cutting plane (hereinafter the cutting plane is defined by the path of the chain cutter).
  • a plurality of abrasive-grain segments or cutting device 4 is firmly mounted to the outer ends of the respective flaps 1.
  • Each flap 1 is in the shape of a rectangular plate having a constant thickness, and is made of metal such as SK steel, stainless steel, SKD steel, SUP steel, SNCM steel or the like. It is desirable that the hardness of the flap 1 is brought to HRc 30 to 65 by hardening treatment or the like. If the hardness of the flap 1 is less than HRc 30, it is impossible to obtain a sufficient strength, while, if the hardness is higher than HRc 65, forming of the flap 1 becomes difficult.
  • the dimension or size of the flap 1 varies depending upon the use of the chain cutter. In a case where the flap is utilized in cutting of normal large stone, for example, it is preferable that the flap 1 has its thickness of the order of 2 mm to 6 mm, its height H of the order of 50 mm to 150 mm, and its width W of the order of 40 mm to 100 mm. If the dimension of the flap 1 is within these ranges, it is possible to cut a large stone with high efficiency using sufficient tensioning force. In this connection, the invention is not limiting to these dimensions quoted.
  • Figs. 3 and 4 show the first embodiment which is characterized in that the connecting tab 8 and the connecting cut-out 10 between each pair of adjacent flaps 1 are formed respectively into a semi-circular configuration.
  • the connecting tab 8 has its peripheral surfaces 8A and 8B at both side edges thereof which are identical in arc with each other. As shown in Fig. 5, the central angle alpha between the peripheral surfaces 8A and 8B is set equal to or larger than 120 o . If the central angle alpha is less than 120 o , the connecting strength between the flaps 1 is reduced.
  • the connecting recess 10 has a pair of peripheral surfaces 10A and 10B which corresponds respectively to the aforesaid peripheral surfaces 8A and 8B.
  • the central angle beta between a pair of opening ends 10C of the connecting cut-out 10 is formed larger than the central angle beta between the pair of constricted sections 8C of the connecting tab 8.
  • the mounting recess 18 is provided with a narrow slit 22, one end of whose opening is directed toward the outer periphery.
  • This end of the slit 22 has one end which opens to a portion of the mounting recess 18 near to the forward edge of the flap 1.
  • the slit 22 has at its terminal end a circular bore 24 for stress relieving.
  • a portion to the forward edge of the slit 22 is an elastic engaging part 26, a deflection of which in the forward direction enables mounting and demounting of the cutting device 4.
  • the cutting device 4 is composed of a metal chip support 28 having its thickness the same as that of the flap 1, and a rectangular cutting bits 30 firmly mounted to the outer end face of the chip support 28.
  • the cutting bits 30 has its thickness which is set to be 0.5 mm to 4 mm thicker than the chip support 28. If the excess thickness of the cutting bits 30 is less than 0.5 mm, a possibility exists that the chip support 28 and the flap 1 are in frictional contact with a cut surface of an object. On the other hand, if the excess thickness of the cutting bits 30 is larger than 4 mm, the cutting loss is high and the yield is reduced unnecessarily.
  • the cutting bit 30 has a metal-bonded abrasive layer containing particles of diamond, CBN or the like, and is firmly mounted to the chip support 28 by means such as soldering, unit sintering, laser welding, electron beam welding or the like.
  • the grain or particle size, the degree of concentration and the thickness of the abrasive grains should be determined according to the use of the chain cutter.
  • the chip support 28 is integrally formed with a projection 28A complementary in configuration with the mounting recess 18.
  • the projection 28A has a convex V-shaped cross-sectional configuration.
  • the projection 28A is formed so that the projection 28A can be fitted in the segment-mounting recess 18 when the slit 22 is opened, and the projection 28A is firmly engaged in the segment-mounting recess 18 when the elastic engaging part 26 returns to its original position.
  • a torsion- or twist-preventing structure for the flap 1 will next be described. Both the forward and the rear end surfaces of the flap 1, as shown in Fig. 3, are made parallel to each other. On the forward end face of the flap 1 is formed a V-shaped cross-sectional engaging groove 38 extending perpendicularly to the vertical forward end face of the flap 1.
  • an engaging projection 40 having its cross-sectional configuration complementary to the aforesaid engaging groove 38 is formed on the opposite side to the foregoing projection 38 of the flap 1.
  • Each flap 1 has, on the forward and rear corners, a pair of driving recesses 6A and 6B.
  • driving recesses 6A and 6B are curved in configuration and are disposed respectively at forward and rear corners of the inner peripheral end of each flap 1.
  • Each of the driving recesses 6A and 6B has its central angle which is of the order of 90 o .
  • Each of the driving recesses 6A and 6B (Fig. 3) has its radius of curvature which is identical with a radius of each of pins 126 firmly mounted respectively to outer peripheries of respective sprockets 88 and 112 of a cutting apparatus subsequently to be described. Further, portions extending respectively from the recesses 6A and 6B to the inner end faces of the flap 1 are rounded.
  • a distance between centers of the respective driving recesses 6A and 6B is equal to a distance between the pins 126.
  • the driving recesses 6A and 6B of the adjacent respective flaps 1 produce an identical curved surface, and the pins 126 are so arranged as to fit in the curved surface without gap.
  • each flap 1 is formed with a sliding groove 42 having in a V-shaped cross-section, which extends along the entire length of the end face of the flap 1. It is desirable that the angle of the V shaped sliding groove 42 is in a range of 60 o to 160 o . If the V-angle is smaller than 60 o , there is a fear that cracks occur in the flap 1 due to a wedging action of the back plate 118, while, if the V-angle is larger than 160 o , the twist-preventing force due to the back plate 118 in the thickness direction is reduced.
  • Figs. 1 and 2 will next be utilized to describe the cutting apparatus which uses the above-described chain cutter.
  • the descriptions such as the upper, lower, left- and right-hand side used in the following description are in reference to the orientation of the cutting apparatus as shown in Fig. 1.
  • the reference numeral 50 in the figures denote a pair of columns spaced apart suitably to provide the main support to the cutting apparatus. As shown in Fig. 2, mounted respectively to these columns 50 are a pair of rectangular bases 54A (left-hand side) and 54B (right-hand side) which permit vertical motions along the column 50, but the keys 52 extending through vertically along the column prevent the rotation of the bases about the column.
  • a top plate 56 is firmly mounted across the upper ends of the respective columns 50 horizontally.
  • An elevating motor 58 is mounted to the left-hand end of the top plate 56.
  • the motor 58 is so designed as to rotate a screw shaft 60 (Fig.2) arranged along the rear face of the left-hand column 50, through a gearbox (not shown).
  • An elevating element 62 firmly mounted to the rear face of the left-hand base 54A is mounted to the screw shaft 60.
  • a gearbox 64 (Fig. 1) is firmly mounted to the right-hand end of the top plate 56.
  • a rotor shaft 66 is laid across or extends between the gearbox 64 and the aforesaid gearbox, so that power of the motor 58 is transmitted also to the gearbox 64.
  • the gearbox 64 has its output shaft which is connected to a screw shaft 68 arranged along the rear face of the right-hand column 50.
  • An elevating element 70 which is firmly mounted to the rear face of the right-hand base 54B, is mounted to the screw shaft 68. When the elevating motor 58 is operated, both the bases 54A and 54B are moved vertically while always maintaining the same relative height.
  • a disc section 74 and a round-shaped groove 72 On the front of the left-hand base 54A, is a disc section 74 and a round-shaped groove 72 whose centers are at the center of the front-face.
  • a tilting plate 76 is arranged along the front face of the disc section 74, and a pair of pawl sections 76A formed respectively at both sides of the tilting plate 76 are fitted respectively in both sides of the round-shaped groove 72.
  • the pawl sections 76A are rotated within the round-shaped groove 72, causing the tilting plate 76 to rotate coaxially with the disc section 74.
  • the tilting plate 76 has on its front face a rectangular guide rail 78 extending in the right- and left- hand direction.
  • the arrangement is as follows. That is, mounted to the guide rail 78 is an L-shaped support plate 80 having its right-hand end bent forwardly so that the L-shaped support plate 80 is movable in the left- and right-hand directions.
  • the support plate 80 is pulled with a constant force to the left by a biasing mechanism (not shown).
  • the front face of the tilting plate 76 has a center which is formed with a shaft section 82 projecting forwardly.
  • the shaft 82 projects forwardly through an elongated bore 84 which is formed in the support plate 80 and which extends in the left- and right-hand directions.
  • Mounted to the shaft 82 for rotation is a pulley 86 and a sprocket 88 which are connected to each other in a coaxial manner.
  • a drive motor 92 is mounted to the left-hand front side face of the base 54A through an attaching plate 90 adjustable in height.
  • a pulley 94 is firmly mounted to a rotary shaft of the drive motor 92.
  • a belt 96 passes around and extends between the pulley 94 and the aforesaid pulley 86. The tension force of the belt 96 is adjustable by vertically moving the attaching plate 90.
  • a pair of curved grooves 98 extending vertically and an circular segmental plate 100 having a uniform width.
  • the pair of curved grooves 98 and the circular segmental plate 100 share the same center of arc as the center of the left-hand sprocket 88.
  • a support plate 102 is arranged at the front face of the segment section 100.
  • the segment section 100 has its both sides which are formed with a pair of pawl sections 104 inserted respectively in the curved grooves 98.
  • the support plate 102 is capable of being inclined through an angle equal to or larger than 5 o about the center of the left-hand sprocket 88 along the section 100. If the tilting angle is less than 5 o , cutting into the object W will become difficult to start.
  • the support plate 102 has on its front face a slide-rail 106 extending in the left- and right-hand direction or the lateral direction.
  • a pulley mounting plate 108 is attached to the slide-rail 106 for movement in the left-and right-hand direction.
  • At the front center of the pulley mounting plate 108 is a shaft 110 which extends forwardly and coaxially.
  • a driving sprocket 112 is rotatably mounted to the shaft 110 through a bearing.
  • a hydraulic cylinder 114 is firmly mounted to the right-hand end-face of the support plate 102 and is directed toward the left. The hydraulic cylinder 114 has its rod which is connected to the pulley mounting plate 108.
  • an operating panel 116 is firmly mounted to the right-hand end face of the right-hand base 54B, and each section is controlled by the operational panel 116.
  • the left-hand end of the support plate 102 is bent in the forward direction in the shape of a letter L.
  • a rectangular back plate 118 extends between the support plate 102 and the right-hand support plate 80 in a plane common to the sprockets 88 and 112.
  • the back plate 118 is made of a material such as SUP steel, SNCM steel, SKD steel, SK steel, stainless steel or the like.
  • the back plate 118 has its thickness which is the same as the flap 1.
  • the vertical distance of the back plate 118 is made equal to the winding diameter of the chain cutter C which is driven by the sprockets 88 and 112.
  • the upper and lower edges of the back plate 118, along its entire length, are formed respectively into a convex V-shaped cross-section complementary with the sliding groove 42 formed on the inner peripheral end of the chain cutter C.
  • the chain cutter C extends between and is wound about the sprockets 88 and 112. In the linear section of the chain, the upper and lower edges of the back plate 118 are fitted, respectively, in the sliding grooves 42 and into the flaps 1 for sliding movement.
  • the sprockets 88 and 112 are made with a pair of discs 120 and 122 bonded together to form a slit 124.
  • the slit 124 has its opening width which is slightly larger than the thickness of the flap 1.
  • the plurality of cylindrical pins 126 is firmly mounted to the interior of the slit 124 at equal intervals in the peripheral direction. An occluded angle between the pair of adjacent pins 126 defines a sprocket angle S.
  • a shallow gutter 128 at a location between the columns 50, extending in the front and rear directions.
  • a pair of guide rails 130 is mounted at the center of the gutter 128 in parallel relation to each other.
  • a work platform 134 (hereinafter referred to as table 134) having its lower surface provided with two pairs of wheels 132 rests on the pair of guide rails 130.
  • a traction wire 136 connected to a drive machine (not shown) is connected to the longitudinal ends of the table 134, so that the table 134 is movable along the guide rails 130.
  • the elevating motor 58 is operated to move the bases 54A and 54B upwardly, and the object W such as stone or the like resting on the table 134 is positioned longitudinally, i.e. along the chain cutter C.
  • the support plate 102 is moved downward along the curved plate section 100, to tilt the entirety including the chain cutter C and the back plate 118.
  • the support plate 102 is fixed at this lowered position.
  • the left-hand support plate 80 is adjusted to apply an adequate tension to the back plate 118.
  • the hydraulic cylinder 114 is operated to pull the attaching plate 108 toward the right. In this manner, the tension force of the chain cutter C is set to an adequate value.
  • the drive motor 92 is operated.
  • the elevating motor 58 is operated while rotating the chain cutter C in the direction shown by the arrows in Fig. 1, to lower the entire chain cutter C at a predetermined cutting speed.
  • the chain cutter C is cut into the object W from the lowered right-hand corner. If a certain degree of cutting depth is reached in due course, the support plate 102 is raised along the curved plate 100, and the chain cutter C is returned to its horizontal position and is locked in place. Cutting proceeds further until the operation has been completed on the object W.
  • the recesses 6A and 6B were formed, respectively, at both sides of the inner face of the flap 1 as an engaging/driving components. They can be substituted with a semi-circular recess in the center area of the inner face of the flap 1. Moreover, the arrangement may be such that a projection is formed on the inner face of the flap 1 while a recess to mesh with the projection can be formed on suitable locations of the sprocket.
  • the cutting bit may be firmly mounted to the flap so as to be incapable of being demounted, by means such as brazing or the like.
  • the cutting bit may be firmly mounted by any suitable detachable means.
  • the sliding groove 42 for the backing plate 118 was formed in the flap 1.
  • the arrangement may be such that a projection is formed on the end face of the flap 1, while a sliding groove is formed on the end face of the backing plate 118.
  • the connecting tab 8 and the connecting cut-out 10 are made in a semi-circular configuration, the quantity of projection of the connecting tab 8 and the depth of the connecting cut-out 10 can remain small, even if the size of the parts is increased. Accordingly, it is possible to decrease the width of the flap 1 in the connecting direction, and the strength of the connecting cut-out 10 can be raised to improve the connecting strength, to counter the reduction in depth of the connecting cut-out 10.
  • Fig. 7 shows a modification of the above-described first embodiment, in which each of the flap 1 and the chip support 28 is formed into a three-layer construction.
  • the chain cutter comprises a plurality of flaps 1, in each of which a pair of outer plates 1A and 1C and an inner plate 1B formed by punching process or the like are bonded to each other in three layers by means of spot welding or the like.
  • the inner plate 1B and the outer plates 1A and 1C have their respective configurations which are partially different from each other, thereby forming the engaging projection 40 and the sliding groove 42 for the back plate, as well as the groove 18A in the segment mounting recess 18, which has a C-shaped cross-sectional configuration.
  • the engaging groove 38 and the engaging projection 40 are engaged with each other against movement in the thickness direction in the case where the connecting angle between the adjacent flaps 1 is equal to or less than the sprocket angle S.
  • the connecting angle is made slightly larger than the sprocket angle S, the engaging groove 38 and the engaging projection 40 are disengaged from each other.
  • the respective configurations of the mounting recess 18 and the mounting projection 28A of the cutting device 4 are elliptical configurations elongated in the connecting direction of the flaps 1.
  • the flap 1 is made in a three-layer construction, mere punching process and spot welding of the thin plates enable the sliding groove 42, the engaging groove 38, the engaging projection 42 and the groove 18A to be formed easily and at high precision. Thus, it is possible to reduce the processing cost as compared with the construction in which they are formed by grinding processing. Further, since the depths of the respective grooves 38 and 42 and the quantity of projection of the engaging projection 40 are made large, it is possible to raise the torsion preventing effects of the flaps 1 correspondingly.
  • the chain cutter C is loosened, and a part of the chain cutter C is bent more than the sprocket angle S. By doing so, the engaging groove 38 and the engaging projection 40 are disengaged from each other, so that it is possible to freely remove the flap 1.
  • FIGs. 8 and 9 show a second embodiment of the invention, which is characterized in that a mounting recess 300 and the slit 22 are formed in the bit support 28 of the cutting device 4, while a mounting projection 304 is formed on the flap 1.
  • an engaging groove 306 is formed in the end face of the straight line section of the connecting tab 8.
  • An engaging projection 308 is formed in the end face of the connecting cut-out 10 which corresponds to the engaging groove 306.
  • the engaging projection 308 and the engaging groove 306 of each adjacent flaps 1 are engaged with each other.
  • torsion of the flaps 1 in the thickness direction is further prevented.
  • the arrangement is also possible in which the engaging projection 38 and the engaging groove 40 for prevention of torsion are omitted.
  • the flap 1 can be brought to a three-layer construction, as shown in Fig. 10.
  • Figs. 11 and 12 show a third embodiment of the invention.
  • the third embodiment is characterized as follows. That is, a pair of projections 310 and a pair of grooves 312 in the shape of a V-shaped cross-section, complementary with each other, are formed in the respective peripheral surfaces 8A, 8B, 10A and 10B of the connecting tab 8 and the connecting cut-out 10.
  • the projection 310 and the groove 312 are fitted in each other for sliding movement, but against movement in the thickness direction of the flap 1.
  • An angular-movement angle theta (Fig. 11) of the connecting tab 8 within the connecting cut-out 10 is larger than the sprocket angle S when the flaps 1 are arranged in a straight line manner.
  • An extension line of the end face 10D of the connecting cut-out 10 on the inner peripheral end thereof is set to be in contact with the end face 10C of the connecting cut-out 10 on the outer peripheral end thereof.
  • the mounting projection 28A of the bit support 28 and the mounting recess 18 in the flap 1 have their respective configurations each of which is formed into a shape in which a pair of arcs are connected to each other by a straight line.
  • the shape has such an advantage that the mounting recess 18 can easily be processed by an end mill.
  • the flaps 1 are prevented from separation in the thickness direction by engagement between the projection 310 and the groove 312, the flaps 1 are difficult to be separated from each other during cutting or transportation of the apparatus.
  • the flap 1 can be brought to a three-layer construction as shown in Fig. 13.
  • Figs. 15 and 16 show a fifth embodiment of the invention.
  • the arrangement is such that, as shown in Fig. 15, the size of the projection L of the connecting tab 8 does not reach the center O1.
  • Each of the curved peripheral surfaces 8A and 8B is formed with a projection 160, and each of the pair of curved peripheral surfaces 10A and 10B of the connecting cut-out 10 is formed with a groove 312 only at a portion having a predetermined length from the opening edge.
  • the flaps 1 are not disconnected from each other regardless of the connecting angle between the flaps 1, during such a period that tension is applied to the flaps 1.
  • the flap 1 may be formed into a three-layer construction, as shown in Fig. 17.
  • the connecting tab 8 has its forward end face which is set to the rear of the curved center O1, it is also possible that the forward end face is set forwardly of the center O1. In this case, the depth of the connecting cut-out 10 should be enlarged, and a room should be formed in which the connecting tab 8 can be moved forwardly within the connecting cut-out 10.
  • Figs. 19 and 20 show a sixth embodiment of the invention.
  • the peripheral surfaces 10A and 10B of the connecting cut-out 10 are so that only portions from the thickness center of the flap 1 toward the rear face thereof are made into tapered surfaces 314, while portions from the thickness center toward the front face are made respectively into vertical surfaces 316.
  • the front face of the flap 1 is formed with a pair of curved staking grooves 318 at their respective remote locations through a predetermined distance from the vertical surface of the connecting cut-out 10.
  • the connecting tab 8 is fitted in the connecting cut-out 10 from the side of the front face of the flap 1, each of the pair of staking grooves 318 is enlarged along the entire length, and a pair of projecting sections 320 on the insides of the respective staking grooves 318 are deformed inwardly, whereby the connecting tab 8 is supported by the connecting cut-out 10 for angular movement, but against separation in the thickness direction of the flap 1.
  • the connecting tab 8 can not be removed from the connecting cut-out 10, so long as the projection 320 is not deformed.
  • the sixth embodiment is suitable in the case where it is not desirable to have the connection between the flaps 1 become loose during handling.
  • Figs. 21 and 22 show a seventh embodiment of the invention, which is characterized in that the curved peripheral surfaces 8A and 8B of the connecting tab 8 and the curved peripheral surfaces 10A and 10B of the connecting cut-out 10 are formed respectively into spherical surfaces which are complementary with each other.
  • the engaging groove 40 and the engaging projection 38 of the adjacent flaps 1 are disengaged from each other, and the flap 1 is twisted as shown in Fig. 22, whereby the connecting tab 8 can easily be disengaged from the connecting cut-out 10. Accordingly, replacement of the flaps 1 and adjustment in the length of the chain can easily be done.
  • Figure 23 shows an eighth embodiment of the invention concerning the cutting apparatus.
  • both the upper and the lower edges of the back plate 118 was in contact with the upper and the inner peripheries of the cutter C.
  • only the lower edge of the backplate is in contact with the lower peripheral region of the cutter C in the linear section.
  • the vertical distance between the upper and the lower edges of the backplate 118 is smaller than the winding diameter of the chain cutter, and the lower edge of the backplate is equipped with a protrusion 118A, which is inserted into the sliding groove 42.
  • Other mechanisms remain the same as in Figure 1.
  • Fig. 24 shows a ninth embodiment of this invention.
  • the components which are the same as in Fig. 1 are not explained further in this section.
  • This embodiment is characterized in that there are four sprockets in stead of two.
  • the additional sprockets 400 and 402 are disposed in the same vertical plane as the plane joining the sprockets 88 and 112.
  • the left-hand shaft 50 has a movable base 404A which is separated some distance from the base 54A, and which can move freely vertically on the shaft 50. From the base 404A projects a shaft section 406A, upon which shaft is disposed a freely rotatable sprocket 400.
  • the right-hand shaft 50 has a movable base 404B which is separated some distance from the base 54B, and which can move freely vertically on the shaft 50. From the base 54B projects a shaft 406B, upon which shaft is disposed a freely rotatable sprocket 402.
  • the distance between the bases 54A and 404A is fixed and maintained by a spacer rod 408, and the pair of bases 54A and 404A moves vertically along the shaft while maintaining the constant separation.
  • the separation distance is adjustable with a hydraulic pressure from a hydraulic pump 410, which is located between the bases 54B and 404B.
  • the other components such as the backplate 118 located between the bases 54A and 54B, and the support plate 80 are the same as in Fig. 1.
  • the chain cutter arrangement shown in Fig. 24 enables cutting of objects of varying sizes without changing the sprockets. This is important since changing the sprocket diameter changes the relative fit of the bit groove with the sprocket teeth, and consequently, a new sprocket requires a new flap.
  • the versatility of this chain cutter permits a cost efficient operation.
  • Fig. 25 shows a tenth preferred embodiment, in which the cutters are arranged in plurality.
  • four cutters are arranged in a multi-sprockets configuration effected by stacking several plates 88A-88E forming a cylindrical rod extending in the axial direction.
  • this multi-bladed chain cutter it is possible to produce several cut sections of rocks and objects in a similar way to a gang-saw, permitting a high efficiency operation.
  • the chain cutter moves in one direction only, thus, the wear of the rear region of the cutting area does not occur. Excessive wear of the supporting region of the abrasive area is thus avoided, and there is little loss of cutting media from the abrasive bits.
  • the cutting movement is more efficient since the cutting direction is unidirectional, unlike a reciprocating gang-saw.
  • Fig. 26 is an eleventh preferred embodiment of this invention, characterized in that the provision of a pair of protrusions 500, protruding perpendicularly to the thickness direction, is made on the rear area of the backplate 118.
  • the thickness T1 of the protrusion 500 is two times the thickness of the cutting device 4.
  • the tapered protrusion extends along the back plate towards the center of the backplate 118 continuously and smoothly.
  • the protrusion when the cutting depth into the object W is deeper than the radius of the chain cutter C, the protrusion performs the function of separating the two cut surfaces so that the upper cutting edges will not interfere with said surfaces.
  • the protrusion 500 is designed to prevent the bottom edge 30a of the cutting device 4 will not interfere with the edge W1 of the cut surface of the work piece W to cause breakage of the work piece or of the bits 30.
  • the protrusion 500 it is not necessary to have the protrusion 500 extending continuously along the backplate 118, it can be disposed periodically along a suitable path.
  • Fig. 27 shows a variation of the protrusion 500 on the backplate 118.
  • the protrusions are made alternately on each side surface of the backplate 118.
  • Such protrusions 500 can be made easily from simple plate shape materials. In comparison with the shape of the protrusion shown in Fig. 26, this shape is able to lessen the impact shock, because the latter shape is more elastic than the former.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Sawing (AREA)

Claims (15)

  1. Schneidvorrichtung zum Schneiden eines Werkstückes (W), mit:
    a) einem flexiblen endlosen Kettenkörper (2) mit mehreren Schneideinrichtungen (4), die an dessen Außenkante angeordnet sind;
    b) mehreren Zahnrädern (88, 112), die den Kettenkörper (2) für eine Bewegung auf einer Endlosbahn lagern, die sich um eine gegebene Fläche in einer gemeinsamen Ebene erstreckt;
    c) einer festen Rückplatte (118), die in der gemeinsamen Ebene und in der gegebenen Fläche angeordnet ist, wobei die Rückplatte (118) den Kettenkörper (2) in Richtung des Werkstückes (W) abstützt;
    d) einer Dreheinrichtung (92, 94, 96) zum Drehen zumindest eines der Zahnräder (88, 112) und zum Antreiben des Kettenkörpers (2) entlang der Endlosbahn; und
    e) einer Bewegungseinrichtung (58, 64, 66) zum Bewegen des Werkstückes (W) oder des Kettenkörpers (2) aufeinander zu, um das Werkstück (W) mit dem Kettenkörper (2) zu schneiden;
    dadurch gekennzeichnet, daß
    f) der Kettenkörper (2) mehrere, im wesentlichen ebene Klappen (1) aufweist, die jeweils einen Verbindungsvorsprung (8) und eine Verbindungsaussparung (10) an ersten und zweiten gegenüberliegenden Enden derselben besitzen, wobei der Verbindungsvorsprung (8) eine halbkreisförmige Form besitzt und ein erstes Paar von bogenförmigen äußeren Umfangsflächen (8A, 8B) aufweist, wobei die Verbindungsaussparung (10) ein zweites Paar von inneren Umfangsflächen (10A, 10B) aufweist, deren Formen den Formen des ersten Paares der äußeren Umfangsfläche (8A, 8B) des Verbindungsvorsprungs (8) entspricht;
    g) das erste Paar der äußeren Umfangsflächen (8A, 8B) des Verbindungsvorsprunges (8) in Richtung des ersten Endes der Klappe (1) weist, an welchem der Verbindungsvorsprung (8) ausgebildet ist;
    h) das zweite Paar der inneren Umfangsflächen (10A, 10B) der Verbindungsaussparung (10) in Richtung des Mittelpunktes der Klappe (1) weist, in welcher die Verbindungsaussparung (10) ausgebildet ist;
    i) wobei der Verbindungsvorsprung (8) jeder Klappe (1) in die Verbindungsaussparung (10) einer benachbarten Klappe eingepaßt ist, wobei das erste Paar der äußeren Umfangsflächen (8A, 8B) der einen Klappe gegen das zweite Paar der inneren Umfangsflächen (10A, 10B) der benachbarten Klappe anliegt, so daß die anliegenden Umfangsflächen (8A, 8B, 10A, 10B) die auf den Kettenkörper (2) wirkende Zugspannung aufnehmen, wobei die Verbindungsvorsprünge (8) und die Verbindungsaussparungen (10) der Klappen (1) die mehreren Klappen miteinander für eine Winkelbewegung in einer gemeinsamen Ebene verbinden, und wobei zumindest bei einigen Klappen (1) die Schneideinrichtung (4) an der äußeren Kante der Klappe (1) angeordnet ist.
  2. Schneidvorrichtung nach Anspruch 1, wobei die äußeren Umfangsflächen der Zahnräder (88, 112) eine Stützeinrichtung (124) enthalten, um den Kettenkörper (2) in einer zur Achse der Zahnräder senkrechten Ebene zu halten.
  3. Schneidvorrichtung nach Anspruch 1, mit mehreren Kettenkörpern (2) und festen Rückplatten (118), wobei der Außenumfang jedes der mehreren Zahnräder (88, 112) mehrere Stützeinrichtungen (124) zum Stützen der jeweiligen Kettenkörper (2) in einer zu der Achse der Zahnräder senkrechten Ebene enthält, und wobei jeder Kettenkörper (2) mit einer festen Rückplatte (118) versehen ist.
  4. Schneidvorrichtung nach Anspruch 1, wobei die Rückplatte (118) ein Ende aufweist, das dem den Kettenkörper (2) in Richtung des Werkstückes (W) stützenden Ende gegenüberliegt, wobei jede Oberfläche der Rückplatte an dem gegenüberliegenden Ende zumindest einen Vorsprung (500) aufweist, und wobei der Abstand zwischen den Vorsprüngen (500) in der zu der Rückplatte (118) senkrechten Richtung größer ist als die Dicke der Schneideinrichtung (4).
  5. Schneidvorrichtung nach Anspruch 1, wobei die Rückplatte (118) mit einer Verlängerungseinrichtung (114) versehen ist, um die Längsspannung der Rückplatte (118) einzustellen.
  6. Schneidvorrichtung nach Anspruch 1, wobei eine Kippvorrichtung (102) vorgesehen ist, um den Kettenkörper (2) oder das Werkstück (W) unabhängig zu kippen und dadurch zumindest manche relative Schnittwinkel zwischen dem Werkstück (W) und dem Kettenkörper (2) innerhalb der gemeinsamen Schnittebene zu verändern.
  7. Schneidvorrichtung nach Anspruch 1, wobei
    - jede Klappe (1) eine Innenkante an der inneren Kante des Schneidkörpers besitzt;
    - jede Klappe (1) zwei Antriebsaussparungen (6A, 6B) an ersten und zweiten gegenüberliegenden Enden der Innenkante der Klappe (1) besitzt, die eine Eingriffseinrichtung bilden, wobei die Eingriffseinrichtung (6A, 6B) des Kettenkörpers (2) unter gleichen Abständen angeordnet ist, wenn der Kettenkörper (2) bogenförmig gekrümmt ist; und
    - mindestens eines der Zahnräder (88, 112) mehrere Antriebsvorsprünge (126) besitzt, die unter gleichen Abständen in Umfangsrichtung an dem Umfang des einen Zahnrades (88, 112) vorgesehen sind, wobei jeder Antriebsvorsprung (126) mit der entsprechenden Eingriffseinrichtung (6A, 6B) des Kettenkörpers (2) in Eingriff steht, um den Kettenkörper (2) entlang der Endlosbahn anzutreiben.
  8. Schneidvorrichtung nach Anspruch 1, wobei:
    - das erste Ende jeder Klappe eine erste Eingriffseinrichtung (38), und das zweite Ende jeder Klappe eine zweite Eingriffseinrichtung (40) aufweist; und
    - die erste Eingriffseinrichtung (38) in linear verlängerten Abschnitten des Kettenkörpers (2) mit der zweiten Eingriffseinrichtung einer zu jeder Klappe benachbarten Klappe in Eingriff steht, um ein Lösen der Klappen (1) in den verlängerten Abschnitten des Kettenkörpers (2) in einer zu der gemeinsamen Ebene senkrechten Richtung zu verhindern.
  9. Schneidvorrichtung nach Anspruch 1, wobei jede Klappe (1) aus einer Mittelplatte (1B) und zwei Seitenplatten (1A, 1C) besteht, die mit beiden Seiten der Mittelplatte (1B) verbunden sind, wobei der Verbindungsvorsprung (8) zumindest einen ersten Eingriffsabschnitt (306, 310) besitzt, der durch eine Umfangsfläche der Mittelplatte (1B) gebildet ist, und wobei die Verbindungsaussparung (10) zumindest einen zweiten Eingriffsabschnitt (308, 312) besitzt, der durch eine innere Umfangsfläche der Mittelplatte (1B) der Klappe (1) gebildet ist.
  10. Schneidvorrichtung nach Anspruch 1, wobei jede Schneideinrichtung ein abrasiver Schneideinsatz (30) ist.
  11. Schneidvorrichtung nach Anspruch 1, wobei jede Schneideinrichtung Sägezähne (250) aufweist.
  12. Schneidvorrichtung nach Anspruch 1, wobei jede Schneideinrichtung (4) einen Befestigungsvorsprung (28A) enthält, wobei die Außenkante jeder ausgewählten Klappe (1) eine Befestigungsaussparung (18) zur Aufnahme des Befestigungsvorsprunges (28A) der Schneideinrichtung (4) bildet, die mit jeder ausgewählten Klappe verbunden ist, und wobei jede Befestigungsaussparung (18) einen elastisch bewegbaren Abschnitt (26) aufweist, um selektiv den in jeder Befestigungsaussparung (18) aufgenommenen Befestigungsvorsprung (28A) in Eingriff zu nehmen oder freizugeben.
  13. Schneidvorrichtung nach Anspruch 1, wobei die Relativposition der Rückplatte (118) bezüglich des Kettenkörpers (2) durch eine Positioniereinrichtung einstellbar ist.
  14. Schneidvorrichtung nach Anspruch 1, wobei
    - der Verbindungsvorsprung (8) jeder Klappe (1) ein Paar erster Eingriffsabschnitte (310) an seinem ersten Paar von Umfangsflächen (8A, 8B) besitzt, wobei die ersten Eingriffsabschnitte (310) in Umfangsrichtung des ersten Paares von Umfangsflächen (8A, 8B) verlängert sind;
    - die Verbindungsaussparung (10) jeder Klappe (1) ein Paar zweiter Eingriffsabschnitte (312) an ihrem zweiten Paar von Umfangsflächen (10A, 10B) besitzt, wobei die zweiten Eingriffsabschnitte (312) in Umfangsrichtung des zweiten Paares von Umfangsflächen (10A, 10B) an der Verbindungsaussparung (10) verlängert sind;
    - die ersten Eingriffsabschnitte (310) des Verbindungsvorsprunges (8) jeder Klappe in einen entsprechenden zweiten Eingriffsabschnitt (312) der Verbindungsaussparung (10) einer benachbarten Klappe passen, um ein Lösen der Klappen (1) voneinander in einer zu der gemeinsamen Ebene senkrechten Richtung zu verhindern.
  15. Schneidvorrichtung nach Anspruch 14, wobei der erste Eingriffsabschnitt (310) des Verbindungsvorsprungs (8) jeder Klappe sich von dem entsprechenden zweiten Eingriffsabschnitt (312) der Verbindungsaussparung der benachbarten Klappe löst, wenn eine Verbindungslänge jeder Klappe und der benachbarten Klappe verkürzt wird, und wobei jede Klappe und die benachbarte Klappe voneinander in einer zu der gemeinsamen Ebene senkrechten Richtung voneinander lösbar werden.
EP90118185A 1989-09-22 1990-09-21 Schneidapparat Expired - Lifetime EP0418915B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94109553A EP0623437B1 (de) 1989-09-22 1990-09-21 Schneidapparat

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP247674/89 1989-09-22
JP1247674A JP2701478B2 (ja) 1989-09-22 1989-09-22 チェーンカッタ
JP27689389 1989-10-24
JP276893/89 1989-10-24
JP298835/89 1989-11-17
JP29883589A JPH03161215A (ja) 1989-11-17 1989-11-17 平板状チェーン体およびその駆動構造
JP1322237A JP2727711B2 (ja) 1989-12-12 1989-12-12 平板状チェーン体
JP322237/89 1989-12-12
JP122562/90 1990-05-11
JP12256290A JPH03205111A (ja) 1989-10-24 1990-05-11 切断装置

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP94109553A Division EP0623437B1 (de) 1989-09-22 1990-09-21 Schneidapparat
EP94109553.1 Division-Into 1994-06-21

Publications (3)

Publication Number Publication Date
EP0418915A2 EP0418915A2 (de) 1991-03-27
EP0418915A3 EP0418915A3 (en) 1991-09-25
EP0418915B1 true EP0418915B1 (de) 1994-12-28

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EP94109553A Expired - Lifetime EP0623437B1 (de) 1989-09-22 1990-09-21 Schneidapparat
EP90118185A Expired - Lifetime EP0418915B1 (de) 1989-09-22 1990-09-21 Schneidapparat

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Application Number Title Priority Date Filing Date
EP94109553A Expired - Lifetime EP0623437B1 (de) 1989-09-22 1990-09-21 Schneidapparat

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EP (2) EP0623437B1 (de)
KR (1) KR910005983A (de)
DE (2) DE69015532T2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055506A1 (en) * 1998-04-24 1999-11-04 Umberto Ferri Stone cutting apparatus using a saw wire carrying chain like cutting elements
PT1332822E (pt) * 2002-01-16 2007-11-16 Swarovski Tyrolit Schleif Serra de fita
CN107310049A (zh) * 2017-07-07 2017-11-03 厦门致力金刚石科技股份有限公司 一种金刚石链锯及成型方法
CN112518898A (zh) * 2020-12-16 2021-03-19 南京清居楼科技有限公司 一种可灵活调整木板切割宽度的切割机
CN115519051B (zh) * 2022-10-12 2023-10-13 江苏南瑞银龙电缆有限公司 一种手持式线缆切割装置
CN118123313B (zh) * 2024-05-10 2024-07-02 成都工业学院 一种管道焊接机器人

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Publication number Priority date Publication date Assignee Title
US614003A (en) * 1898-11-08 Band-saw
BE505203A (de) *
BE518164A (de) *
US1178362A (en) * 1915-05-07 1916-04-04 Rode Nicolay Wall Saw.
US1363171A (en) * 1919-01-03 1920-12-21 Cephas P Sly Chain saw
US1520422A (en) * 1922-10-13 1924-12-23 Lind Arvid Saw blade
US1559522A (en) * 1925-01-06 1925-10-27 Frunk Otto Emanuel Link saw
FR595055A (fr) * 1925-03-13 1925-09-25 Nouveau système de machine à scier tous les métaux ou autres matières à doubles coupes avec cependant une seule scie à ruban mais perforée permettant de scier simultanément automatiquement transversalement et verticalement la pièce à scier sur ses deux côtés se faisant vis-à-vis jusqu'à sectionnement complet
US2320082A (en) * 1940-12-03 1943-05-25 Kupka Edward Chain saw
US2869534A (en) * 1956-09-11 1959-01-20 Stihl Andreas Grinding chain tool
NO136485C (no) * 1972-11-29 1977-09-14 Elkem Spigerverket As Sagkjede for motorsag.
US3856358A (en) * 1973-04-27 1974-12-24 Cincinnati Mine Machinery Co Wear-resistant inserts for in surfaces of the links of cutter chains and the like to retard wear thereof
DE3416712A1 (de) * 1984-05-05 1985-11-07 Leopold 5350 Euskirchen Jägers Kreissaegeblatt mit einschiebbaren schneideinsaetzen

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Publication number Publication date
EP0418915A2 (de) 1991-03-27
EP0623437B1 (de) 2001-12-19
EP0623437A3 (de) 1995-11-15
DE69015532T2 (de) 1995-06-08
DE69033884D1 (de) 2002-01-31
EP0418915A3 (en) 1991-09-25
DE69033884T2 (de) 2002-07-18
DE69015532D1 (de) 1995-02-09
KR910005983A (ko) 1991-04-27
EP0623437A2 (de) 1994-11-09

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