JP5389732B2 - Bar cutting machine - Google Patents

Description

  The present invention relates to a bar cutting machine that cuts a bar to a desired length by cutting a rotating circular saw in a direction crossing a long bar, and in particular, the bar is cut by a circular saw. The present invention relates to a technique for clamping a bar.

  By rotating a circular circular saw having a plurality of outer peripheral blades connected in the circumferential direction into a long bar such as a rolled material or a drawn material while rotating the circular saw, the bar is made a predetermined length. Clamping device having a vertical vise that holds not only a horizontal vise that holds the vicinity of the end of the bar material into which the circular saw is cut in the horizontal direction, that is, the horizontal direction, but also the vertical direction, that is, the vertical direction. A bar cutting machine equipped with is known. For example, those described in Patent Documents 1 to 3. According to such a bar cutting machine, since the vicinity of the end of the bar into which the circular saw is cut is clamped from two directions by the horizontal vise and the vertical vice of the clamping device, a cutting load or vibration is applied from the circular saw. Even if cut, there is no deviation of the bar during cutting, and the product dimensional accuracy after cutting is improved.

Japanese Patent Laid-Open No. 10-230412 JP 2004-136398 A JP 2004-136399 A

  By the way, the vertical vise of the clamping device is moved by an entrance receiving member and an exit receiving member, which are fixedly positioned with a gap for allowing the circular saw to pass in the longitudinal direction of the bar, and an actuator. And a pressing member that presses and holds the bar material from above with at least the entry-side receiving member. The entry side receiving member and the exit side receiving member are related to supporting the cutting load from the circular saw and suppressing the deformation of the bar during cutting. The rod is supported so as to support the circular saw as close as possible to the circular saw as long as it does not interfere with the circular saw.

  However, as described above, when the outlet side receiving member is positioned as close as possible to the circular saw within a range where it does not interfere with the circular saw being cut, it is generated by cutting the bar with the circular saw. Since a part of the chips accumulate on the delivery receiving member, when the circular saw that is cutting the rod is pushed into the accumulated and entangled chips, for example, a circular saw made of cemented carbide is used. There has been a problem in that the outer peripheral blade is damaged by chipping and a problem of shortening the life of the circular saw occurs.

  The present invention has been made against the background described above, and an object thereof is to provide a bar cutting machine in which the life of a circular saw is not affected by accumulated chips.

To achieve this object, the gist of the invention according to claim 1 is that (a) a circular circular saw having a plurality of outer peripheral blades connected in the circumferential direction on the outer peripheral portion is rotated while the longitudinal shape is rotated. A bar cutting machine provided with a clamp device that clamps the vicinity of the tip of the bar material into which the circular saw is cut when the bar material is cut into a predetermined length by being cut into the bar material. And (b) the clamping device is configured such that the receiving member is fixed in the longitudinal direction of the bar with a predetermined gap for allowing the circular saw to pass through the longitudinal direction of the bar. And the bar member is sandwiched between the outlet side receiving member and the pressing member moved by the actuator, and (c) the outlet side receiving member is determined in advance smaller than the widthwise dimension of the bar member. It was a support surface width dimension movably in the width direction of the rod material Vignetting, and it is intended to support the rod member with the supporting surface.

According to the bar cutting machine of the invention according to claim 1, the delivery side receiving member that receives the bar from below has a support surface having a predetermined width dimension smaller than the width direction dimension of the bar. Since it is provided so as to be movable in the width direction of the bar, and the bar is supported using the support surface, chips generated from the bar by cutting with a circular saw are deposited on the delivery receiving member. Since the circular saw that is cutting the bar material is deposited on the receiving side receiving member and pushed into the tangled chips, the outer peripheral blade of the circular saw may be damaged by chipping, or the round saw The problem of shortening the life of the saw is preferably solved.

  Here, preferably, the said output side receiving member has an output side inclined surface which becomes low from the said support surface, so that it separates from the said input side receiving member. In this way, the chips that fall on the exit inclined surface that is lowered from the support surface on the bar projecting side of the exit receiving member roll off further, so that the chips generated from the rod are generated by cutting with a circular saw. Less deposition on the side receiving member.

  Preferably, the base member is fixed in position, and the movable member is guided by a guide groove provided in the base member so as to be movable in the width direction of the bar, and the output side receiving member is fixed. And a positioning actuator that is connected to the moving member and changes the position of the outlet receiving member. In this way, when cutting a plurality of types of bar materials having different width dimensions and diameter dimensions, by changing the position of the output side receiving member using the positioning actuator according to the width dimension and the diameter dimension of the bar material, It is possible to support a position corresponding to the center of the bar in the width direction and a position corresponding to the lowest point of the bar.

  Preferably, the moving member has a receiving member mounting portion in which the output side receiving member is fixed to a part of the upper end edge portion, and an upper end edge portion of the moving member that becomes lower toward the inlet side receiving member. It has the inclined surface formed in the part except the receiving member attaching part of them, It is characterized by the above-mentioned. In this way, the chips generated from the bar material by cutting with the circular saw are dropped by the inclined surface formed on the portion other than the mounting portion of the upper end edge of the moving member to which the delivery receiving member is fixed. Therefore, chips are preferably prevented from accumulating on the moving member.

  Preferably, the moving member is a plate-like member provided in close contact with a side surface of the base member on the entry side receiving member side, and the base member faces the entry side receiving member. A lower chamfered surface at the corner between the side surface and the upper surface on the receiving member side, and the inclined surface formed on the moving member is inclined following the chamfered surface. Features. In this way, chips generated from the bar material by cutting with a circular saw guide the moving member to which the delivery side receiving member is fixed. Since it is made to fall by the chamfering surface formed in the corner | angular part, it is prevented suitably that chips accumulate on the base member.

  Preferably, the chamfered surface formed at the corner between the side surface and the upper surface of the base member of the fixed position on the entry side receiving member side, and the inclined surface following the chamfered surface. In the connecting portion with the inclined surface of the moving member, the lower end of the chamfered surface protrudes by a predetermined amount from the upper end of the inclined surface toward the entry side receiving member. In this way, it is possible to suitably prevent the chips from being caught in a slight gap between the lower end of the chamfered surface of the base member and the inclined surface of the moving member and the accumulation of the chips starting from the chips.

  Preferably, the clamp device includes a laterally fixed clamp device that horizontally holds the vicinity of the tip portion of the bar material into which the circular saw is cut, and a vertical direction of the vicinity of the tip portion of the bar material. A vertical fixing clamp device is provided for clamping, and the vertical fixing clamp device presses the bar from above by a pressing member moved by the actuator and clamps it with the receiving member. . In this way, the clamping device is provided between the inlet side receiving member and the outlet side receiving member, the contact plate having a receiving surface perpendicular thereto, and the pressing member driven by the single hydraulic cylinder in the oblique direction. There is an advantage that the vicinity of the tip end portion of the bar is reliably fixed using a relatively low pressing force as compared with the type in which the bar is clamped. Moreover, when fixing the front-end | tip part of a bar, fixing position accuracy can be improved by performing fixation of a bar with a vertical direction fixed clamp device before fixation of a bar with a horizontal direction fixed clamp device.

  Preferably, the outlet side receiving member includes a position fixing base member provided with a common fixing place for removably fixing the outlet side receiving member to a predetermined fixing position using a fastening member. The receiving member has a fixing portion fixed to the fixing location and a support portion protruding upward from the fixing portion, and the first outlet side where the supporting portion is located at the first position with respect to the fixing portion. A receiving member and a second output side receiving member in which the support portion is located at a second position different from the first position with respect to the fixed portion, the first output side receiving member and the second output side receiving member Is to be fixed alternatively to the fixing position of the base member. If it does in this way, at the time of cutting of a bar, it will be possible to support a plurality of types of bars having different diameters or widths with a simple configuration.

  Preferably, the outlet side receiving member includes a fixed base member provided with a plurality of preset fixing positions for detachably fixing the outlet side receiving member using a fastening member. The base member is alternatively fixed to a plurality of fixing locations. If it does in this way, at the time of cutting of a bar, it will be possible to support a plurality of types of bars having different diameters or widths with a simple configuration.

  Also preferably, the support surface of the outlet receiving member is ½ or less of the width of the bar. If it does in this way, it will reduce suitably that the chip generated from a bar material by cutting with a circular saw accumulates on an outgoing side receiving member.

  Preferably, the support surface of the outlet receiving member is 5 to 25 mm. If it does in this way, it will reduce suitably that the chip generated from a bar material by cutting with a circular saw accumulates on an outgoing side receiving member.

It is a front view which shows the swing type bar cutting machine of one Example of this invention. It is a figure which shows the circular saw used with the bar cutting machine of FIG. 1, and the nozzle which injects cutting fluid toward a circular saw during the cutting by the circular saw. It is a figure explaining the process in which chips generate | occur | produce by cutting of the workpiece by the circular saw of FIG. It is a figure which expands and shows the principal part of FIG. 1, ie, a one part structure of the vertical direction fixed clamp apparatus. It is a perspective view explaining the structure of the base member shown by FIG. 1, FIG. It is a figure which shows the member accommodated in the guide groove which notched a part of base member, in order to demonstrate the mechanism by which the output side receiving member of the vertical direction fixed clamp apparatus of FIG. 1 is moved by the positioning actuator. It is a figure which shows the attachment structure of the entrance side receiving member and exit side receiving member of the vertical direction fixed clamp apparatus of FIG. 1 from the side surface of the workpiece mounted in them. It is a perspective view which shows the structure where the delivery side receiving member of the vertical direction fixed clamp apparatus of FIG. 1 is moved except a base member. In another Example of this invention, it is a figure explaining the clamped state of H-shaped steel. In another Example of this invention, it is a figure explaining the clamp state of channel steel. FIG. 1 shows a mounting structure of an inlet side receiving member and an outlet side receiving member of another embodiment of the longitudinal direction fixed clamp device of the first embodiment from the direction of the axis O1 of the work material placed thereon. It is a figure which expands and shows a part of structure of the vertical direction fixed clamp apparatus shown, Comprising: It is a figure corresponded in FIG. 11 is a view showing the attachment structure of the entrance receiving member and the exit receiving member of the longitudinally fixed clamp device of the embodiment of FIG. 11 from the side of the work material placed on them, and corresponds to FIG. It is. It is a figure explaining the structure of the delivery side receiving member used for the Example of FIG. It is a figure explaining the structure of the other exit side receiving member used for the Example of FIG. FIG. 1 shows a mounting structure of an inlet side receiving member and an outlet side receiving member of another embodiment of the longitudinal direction fixed clamp device of the first embodiment from the direction of the axis O1 of the work material placed thereon. It is a figure which expands and shows a part of structure of the vertical direction fixed clamp apparatus shown, Comprising: It is a figure corresponded in FIG. 4, FIG. 15 is a view showing the attachment structure of the entrance receiving member and the exit receiving member of the longitudinally fixed clamp device of the embodiment of FIG. 15 from the side of the work material placed on them, and FIG. 7 and FIG. It is an equivalent figure.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, the drawings are appropriately simplified or modified, and the dimensional ratios, shapes, and the like of the respective parts are not necessarily drawn accurately.

  FIG. 1 is a front view showing a swing-type bar cutting machine 10 according to an embodiment of the present invention. In FIG. 1, a bar cutting machine 10 cuts a workpiece 14 supplied from a feed device (not shown) arranged on the back side of the bar cutting machine 10 shown in FIG. A material sizing feeder 16 that intermittently feeds in the longitudinal direction by a predetermined dimension set in advance, that is, moves in a direction parallel to the axis O 1 of the workpiece 14, and a lower end portion is supported by a support shaft 17. A disc-shaped circular saw 20 rotatably provided around the rotation center C2 and an aqueous or oily mist shape are provided at the upper end portion of the tilting member 19 provided rotatably around the rotation center C1 by the base 18. A mist injection device 22 for injecting the cutting fluid toward the circular saw 20, a circular saw rotation drive device 24 for rotationally driving the circular saw 20, and the circular saw 20 on the metal workpiece 14 in the longitudinal direction In order to cut in the orthogonal direction, the circular saw 20 is And a circular saw moving device 26 that moves toward the workpiece 14. The material to be cut 14 of the present embodiment has a round bar shape, and is arranged so as to form a longitudinal shape in a direction perpendicular to the paper surface in FIG. And the said to-be-cut material 14 consists of metals, such as general steel, such as carbon steel, alloy steel, stainless steel, an aluminum alloy, a copper alloy, for example, and is a metal bar with a circular cross section in a present Example.

  The material sizing feeder 16 includes an entrance receiving member 27 arranged with a predetermined gap S for allowing the circular saw 20 to pass therethrough in the longitudinal direction of the workpiece 14, that is, in the direction of the axis O <b> 1. A shaft for clamping the intermediate portion or the rear end portion of the workpiece 14 on which the front end portion is placed on the delivery-side receiving member 28 and feeding the workpiece 14 by a predetermined size in synchronization with the cutting cycle. The movable clamp device (not shown) that is driven to reciprocate in a direction parallel to the center O1 and the position of the tip of the workpiece 14 on the entry side receiving member 27 and the exit side receiving member 28 are fixed from the lateral direction, that is, the horizontal direction. A horizontal direction fixed clamp device 30 and a vertical direction fixed clamp device 32 for fixing from the vertical direction, that is, the vertical direction are provided. The entry-side receiving member 27 is a member having a support surface with a width dimension equal to or larger than the width dimension of the workpiece 14 and is fixed to the machine frame 39. The outlet receiving member 28 is a member having a support surface 28a having a width dimension sufficiently smaller than the width dimension of the workpiece 14 and is attached to the moving member 84, as will be described later.

  Prior to the cutting of the workpiece 14 by the circular saw 20 in the cutting cycle, the horizontal fixed clamp device 30 and the vertical fixed clamp device 32 fix the tip of the workpiece 14 so that the circular saw 20 The fixed state is maintained until the cutting of the cutting material 14 is completed. The movable clamp device is to be cut in a section where the distal end portion of the workpiece 14 is not fixed by the horizontal fixed clamp device 30 and the vertical fixed clamp device 32 and the circular saw 20 is returned to the original position. A movable clamp for moving a predetermined dimension set in advance by a hydraulic cylinder, for example, in a direction parallel to the axis O1 while gripping the material 14, and a drive device for driving the clamp are provided.

  The laterally fixed clamping device 30 is in a horizontal direction perpendicular to the axis O1 of the workpiece 14 and parallel to the upper surfaces (work support surfaces) of the inlet side receiving member 27 and the outlet side receiving member 28, that is, in the direction of arrow a in FIG. A hydraulic cylinder 31 having a piston capable of reciprocating in the vertical direction, and a clamp pad 36 connected to the piston rod of the hydraulic cylinder 31 and fixed to the tip of the moving member 34 movable in the direction of arrow a. The laterally fixed clamping device 30 fixes the material to be cut 14 between the clamp pad 36 and the contact plate 38 by advancing the clamp pad 36 toward the material 14 by the hydraulic cylinder 31. . The abutting plate 38 is a plate material provided in a fixed position directly or indirectly on a machine frame (frame) 39 on the base 12 in a state of facing the clamp pad 36 of the workpiece 14. The abutting plate 38 and the clamp pad 36 are each composed of two members spaced by a predetermined interval for allowing the circular saw 20 to cut the workpiece 14 sandwiched therebetween.

  The vertical direction fixing clamp device 32 sandwiches the workpiece 14 and is opposite to the inlet side receiving member 27 and the outlet side receiving member 28 and is orthogonal to the axis O1 of the workpiece 14 and the inlet side receiving member. 27 and a hydraulic cylinder 40 having a piston rod capable of reciprocating in the direction perpendicular to the upper surface (the surface on which the non-cutting material is placed), that is, the direction of the arrow b in FIG. And a clamp pad 42 fixed to the tip of the rod. This vertical direction fixed clamp device 32 advances the clamp pad 42 toward the workpiece 14 by the hydraulic cylinder 40, so that the workpiece 14 is moved to the clamp pad 42, the inlet side receiving member 27, and the outlet side receiving member 28. And fix between. Note that the horizontal direction fixed clamp device 30 and the vertical direction fixed clamp device 32 release the fixation of the material to be cut 14 when the material to be cut 14 is sent in the direction of the axis O1 by the movable clamp device. Preferably, when the workpiece 14 is fixed, the workpiece 14 is fixed by the vertical fixing clamp device 32 before the workpiece 14 is fixed by the horizontal fixing clamp device 30.

  FIG. 2 is an enlarged view showing a part of the circular saw 20 shown in FIG. As shown in FIG. 2, the circular saw 20 is connected to the base metal 44 by a disc-like base metal 44 and at a constant interval in the circumferential direction on the outer periphery of the base metal 44, for example, by brazing or the like. A plurality of outer peripheral blades, that is, carbide tips 46 are provided. As shown in FIG. 1, the base metal 44 is integrally fixed to the rotating shaft 47, and supported by the tilting member 19 through the rotating shaft 47 so as to be rotatable around the rotation center C <b> 2. In FIG. 1, the cover member 48 of the circular saw 20 is partially cut away.

  The cemented carbide tip 46 is a tip using a cemented carbide alloy made of a sintered body mainly composed of tungsten carbide, for example, and corresponds to the blade portion of the present invention. As shown in FIG. 3, the cemented carbide tip 46 of the present embodiment includes a cutting edge 49 and a rake face 58 formed on the front side in the rotational direction of the circular saw 20 with respect to the cutting edge 49. FIG. 3 is a view showing a state in which the outer peripheral portion of the material to be cut 14 is cut by cutting the rotationally driven circular saw 20 into the material to be cut 14 from the side surface side of the carbide tip 46. . When the cemented carbide tip 46 that is rotationally driven in the direction of the arrow c is pressed against the workpiece 14, a part of the outer peripheral portion is removed along the circumferential direction by the cutting action of the cutting blade 49 of the cemented carbide tip 46. . The removed chips or chips K are discharged while sliding against the cutting edge 49, the rake face 58 and the concave face 60. The chip K is deformed into a curved shape by the concave surface 60 and is broken into small pieces, so that discharge is promoted.

  Returning to FIG. 1, the circular saw rotation driving device 24 includes a rotary shaft 47 that supports the circular saw 20 so as to be rotatable about the rotation center C <b> 2, and a circular saw driving motor as a power source that rotationally drives the circular saw 20. 62 and a transmission member (not shown) such as a pulley and a belt for transmitting the rotation of the output shaft of the electric motor 62 for driving the circular saw to the rotary shaft 47. The circular saw driving motor 62 is fixed to the tilting member 19. The circular saw rotation driving device 24 drives the circular saw 20 in the direction of arrow c by operating the circular saw driving motor 62 and transmitting the rotation of the output shaft to the rotary shaft 47 through the transmission member. To do.

  The circular saw moving device 26 is configured to move the circular saw 20 toward the workpiece 14 or to the opposite side of the workpiece 14. A first support member 66 fixed to the upper surface of the machine base 64 integrated with the machine frame 39 provided with the receiving member 28 and the contact plate 38, and a second support member fixed to the upper part of the tilting member 19 that supports the circular saw 20. The support members 68 are driven so as to approach and separate from each other. Specifically, the circular saw moving device 26 includes a hollow cylindrical support member 70 supported by a first support member 66 so as to be rotatable around a rotation center C3, and substantially concentric with the axis of the support member 70. And an electrically driven servo motor 72 fixed to the end of the support member 70 opposite to the second support member 68, and one end of the ball screw rotation output shaft. Is supported by the inner peripheral surface of the support member 70 so as to be movable in the axial direction and non-rotatable around the axial center, and the other end portion is supported by the second support member 68 on the rotation center C3. And a cylindrical axial movement member 74 supported so as to be rotatable about a parallel rotation center C4. The circular saw moving device 26 operates a servo motor 72 to move an axial moving member 74 connected to the upper portion of the tilting member 19 via a second support member 68 in the axial direction, that is, in the direction of arrow d in FIG. The tilting member 19 is tilted in the direction of arrow e in FIG.

  For example, the mist injection device 22 is a mist cutting fluid supply source (not shown) arranged on the back side of the tilting member 19 shown in FIG. 1 and a mist cutting fluid supplied from the mist cutting fluid supply source. As shown in FIG. 2, the direction of the circular saw 20 in the direction of the arrow f, that is, the tangent to the rotation locus L of the carbide tip 46 from the position facing the rake face 58 of the carbide tip 46 toward the rake face 58. A first nozzle 76 that injects in the direction, and a second nozzle 78 that injects the mist-like cutting fluid in the direction of arrow g in FIG. 2 toward the back of the cemented carbide tip 46 just before cutting into the workpiece 14. Yes.

  4 to 8 are diagrams for explaining the configuration of the vertical direction fixed clamp device 32 in detail. FIG. 4 shows an enlarged part of the longitudinal fixed clamping device 32 of FIG. In FIG. 4, the vertical fixing clamp device 32 has a guide groove 80 that is provided in the shape of a long hole penetrating in the thickness direction, that is, the direction of the axis O <b> 1, and protrudes directly or indirectly to the machine frame 39. A base member 82 fixed to the base member 82, and a moving member 84 guided by the guide groove 80 of the base member 82 so as to be movable in the width direction, that is, the horizontal direction of the workpiece 14 and to which the delivery receiving member 28 is fixed. And an electric positioning actuator 86 that is connected to the moving member 84 and changes the position of the outlet receiving member 28.

  As shown in the perspective view of FIG. 5, the base member 82 is composed of a plate material having a stepped portion 82d having a step slightly larger than the plate thickness at the center in the longitudinal direction. Also, the positioning actuator 86 is fixed to the side away from the material to be cut 14, and the guide groove 80 is formed penetrating in the thickness direction on the material to be cut 14 side than the stepped portion 82 d, and the guide groove 80. An accommodation groove 88 formed in the longitudinal direction of the base member 82 is formed so as to communicate and accommodate the output rod 86 a of the positioning actuator 86. A pair of sliding plates 90 and 92 made hard by quenching or the like are attached to the upper wall surface and the lower wall surface of the guide groove 80, respectively, and the distance between the opposing surfaces of the pair of sliding plates 90 and 92 is fixed. Is the same as the interval between the accommodation grooves 88.

  As shown in FIGS. 6 to 8, the moving member 84 is provided so as to close the opening on the inlet side receiving member 27 side of the guide groove 80 while being in close contact with the side surface of the base member 82 on the inlet side receiving member 27 side. A receiving member mounting portion 84a in which the outlet receiving member 28 is fixed to a part of the upper end edge portion, and the upper end edge portion of the upper end edge portion so as to become lower toward the inlet receiving member 27. And an inclined surface 84b formed in a portion excluding the receiving member mounting portion 84a. In addition, the base member 82 has a chamfered surface 82 a that becomes lower toward the entrance-side receiving member 27 at the corner between the side surface on the entrance-side receiving member 27 side and the upper surface, and the entrance-side receiving member 27. The chamfered surface 82b, which becomes lower as the distance from the first receiving member 27 increases, is provided at the corner portion between the side surface on the opposite side (front side) to the inlet side receiving member 27 and the upper surface.

  An inclined surface 84b formed on the moving member 84 is inclined following the chamfered surface 82a. Then, as shown in FIG. 7, following the chamfered surface 82 a, a chamfered surface 82 a formed at a corner between the side surface and the upper surface of the base member 82 on the side of the entrance side receiving member 27. In order to prevent the chips K from being caught at the connection portion of the inclined moving member 84 with the inclined surface 84b, the lower end of the chamfered surface 82a is slightly closer to the input side receiving member 27 side than the upper end of the inclined surface 84b. Protrudes by a predetermined amount T.

  The output side receiving member 28 is configured so as to form a predetermined gap S with the input side receiving member 27 for allowing the circular saw 20 to pass in the longitudinal direction of the workpiece 14, that is, in the direction of the axis O <b> 1. The receiving member mounting portion 84 a of the moving member 84 is fixed with bolts 94. The delivery receiving member 28 is a support surface formed to have a predetermined width dimension that is ½ or less than the width direction dimension of the workpiece 14, that is, about 5 to 25 mm. 28a and an output side inclined surface 28b that becomes lower from the support surface 28a as the distance from the input side receiving member 27 increases. Then, the chamfered surface 82 b of the base member 82 is inclined following the output side inclined surface 28 b formed on the output side receiving member 28. As shown in FIG. 7, a step D is provided at the connecting portion between the outlet side inclined surface 28 b of the outlet side receiving member 28 and the subsequent chamfered surface 82 b of the base member 82 to prevent the chips K from being caught. It has been.

  The output rod 86a of the positioning actuator 86 includes four horizontal rollers 96 and a lower slide for guiding in a horizontal direction between a pair of sliding plates 90 and 92 fixed to the inner wall surface of the guide groove 80. A guide member 104 having a pair of vertical rollers 98 for guiding the moving plate 92 in the longitudinal direction of the base member 82 by sandwiching the moving plate 92 with the moving member 84, and being fixed to the moving member 84 by bolts 100 and 102. It is connected to.

  Prior to cutting the workpiece 14, the longitudinally fixed clamping device 32 configured as described above lowers the clamp pad 42 from above toward the workpiece 14 by the hydraulic cylinder 40, thereby cutting the workpiece. 14 is sandwiched and fixed between the clamp pad 42 and the inlet side receiving member 27 and the outlet side receiving member 28. When the width dimensions of the material to be cut 14 are different, for example, the center of the width direction of the output side receiving member 28 and the width of the material to be cut 14 are positioned so that the output side receiving member 28 is located directly below the material to be cut 14. The output side receiving member 28 is moved by the positioning actuator 86 so that the center of the direction coincides. The positioning actuator 86 is operated in accordance with a manual switch operation, or is moved by an electronic control device in response to the type of the material 14 to be cut set and input in advance.

  In the bar cutting machine 10 configured as described above, first, for example, the positioning actuator 86 is used so that the center in the width direction of the delivery receiving member 28 and the center in the width direction of the workpiece 14 are aligned. The side receiving member 28 is moved. Next, the end of the material to be cut 14 is supplied from the material supply device (not shown) onto the entry side receiving member 27 and the exit side receiving member 28 by the material sizing feeder 16. Next, the material 14 to be cut is clamped and fixed by the lateral fixing clamp device 30 and the vertical fixing clamp device 32. Next, the circular saw 20 rotated by the circular saw rotation driving device 24 is moved toward the workpiece 14 by the circular saw moving device 26. Then, the mist-like cutting fluid is ejected from the first nozzle 76 and the second nozzle 78 of the mist injection device 22 toward the circular saw 20, and the circular saw 20 is set according to a preset cutting speed (moving speed). Cut into the workpiece 14. During the cutting by the circular saw 20, a large amount of chips K from the workpiece 14 are generated and dropped downward. This chip K has a curled complex shape and flash, is easily caught on a small surface or gap, and is easily entangled and accumulated. When the circular saw 20 is pushed into the accumulated chips K, it is damaged and its life is shortened.

  However, according to the bar cutting machine 10 of the present embodiment, as described above, the delivery-side receiving member 28 that receives the end portion of the workpiece 14 from below is smaller than the width dimension W of the workpiece 14. Since the material to be cut 14 is supported by using the support surface 28a having a small predetermined width dimension, the chips K generated from the material to be cut 14 by cutting with the circular saw 20 are formed on the delivery receiving member 28. Since the circular saw 20 that is cutting the workpiece 14 is deposited on the delivery receiving member 28 and pushed into the chips K entangled with each other, the outer peripheral edge of the circular saw 20, i.e., super Problems such as chipping damage to the hard tip 46 and shortening of the life of the circular saw 20 are preferably solved.

  Further, according to the bar cutting machine 10 of the present embodiment, the outlet receiving member 28 has the outlet inclined surface 28b that becomes lower from the support surface 28a as the distance from the inlet receiving member 27 increases. Since the chips K that have fallen on the outgoing inclined surface 28b that is lowered from the support surface 28a on the protruding side of the workpiece 14 of the receiving member 28 roll down, the chips K generated from the workpiece 14 by cutting with the circular saw 20. Is less deposited on the outlet receiving member 28.

  Further, according to the bar cutting machine 10 of the present embodiment, the base member 82 is fixed in position, and is guided by the guide groove 80 provided in the base member 82 so as to be movable in the width direction of the workpiece 14. And a positioning member 86 that is connected to the moving member 84 and changes the position of the outlet side receiving member 28. When cutting a plurality of types of workpieces 14 having different dimensions, the position of the delivery-side receiving member 28 is changed using the positioning actuator 86 in accordance with the width and the diameter of the workpiece 14 in the width direction of the workpiece 14. The position corresponding to the center and the position corresponding to the lowest point of the workpiece 14 can be supported.

  Further, according to the bar cutting machine 10 of the present embodiment, the moving member 84 is directed to the receiving member mounting portion 84a in which the output side receiving member 28 is fixed to a part of the upper end edge portion, and the incoming side receiving member 27. Since it has the inclined surface 84b formed in the part except the receiving member attachment part 84a of the upper end edge so that it may become so low, the chip K which generate | occur | produces from the to-be-cut material 14 by the cutting by the circular saw 20 Is dropped by the inclined surface 84b formed on the upper end edge of the moving member 84 to which the outlet receiving member 28 is fixed, except for the receiving member mounting portion 84a. Chip accumulation is preferably prevented.

  Further, according to the bar cutting machine 10 of the present embodiment, the moving member 84 is a plate-like member provided in close contact with the side surface of the base member 82 on the inlet side receiving member 28 side, and the base member 82 has a chamfered surface 82 a that becomes lower toward the entry side receiving member 27 at the corner between the side surface and the upper surface on the entry side receiving member 27 side, and an inclined surface 84 b formed on the moving member 84. Is inclined following the chamfered surface 82a, so that the chips K generated from the workpiece 14 by cutting with the circular saw 20 guide the moving member 84 to which the delivery receiving member 28 is fixed. The base member 82 is dropped by the chamfered surface 82a formed at the corner between the side surface on the inlet side receiving member 27 side and the upper surface, so that it is preferable that the chips accumulate on the base member 82. Is prevented.

  Further, according to the bar cutting machine 10 of the present embodiment, the chamfered surface 82a formed at the corner between the side surface and the upper surface of the base member 82 at the fixed position on the inlet side receiving member 27 side, and its surface In a connecting portion of the moving member 84 that is inclined following the chamfered surface 82a with the inclined surface 84b, the lower end of the chamfered surface 82a is slightly smaller than the upper end of the inclined surface 84b toward the entry side receiving member 27 by a predetermined amount. Since it protrudes by T, the chip K is caught in a slight gap between the lower end of the chamfered surface 82a of the base member 82 and the inclined surface 84b of the moving member 84, and the accumulation of chips starting from the chip K. Is preferably prevented.

  Further, the bar cutting machine 10 of the present embodiment includes a lateral fixing clamp device 30 that horizontally clamps the vicinity of the tip of the workpiece 14 into which the circular saw 20 is cut, and the tip of the workpiece 14. A vertical fixing clamp device 32 that holds the vicinity in the vertical direction is provided, and the vertical fixing clamp device 32 presses the workpiece 14 from above by a pressing member 42 that is moved by an actuator 40 to enter the receiving member 27. Is sandwiched between. For this reason, the clamping device includes an inlet receiving member 27 and an outlet receiving member 28, a backing plate 38 having a receiving surface perpendicular to these receiving surfaces, and a pressing member driven by a single hydraulic cylinder in an oblique direction. There is an advantage that the vicinity of the front end portion of the material to be cut 14 is reliably fixed by using a relatively low pressing force as compared with the type in which the material to be cut is sandwiched between them. Further, when fixing the distal end portion of the workpiece 14, the fixing of the workpiece 14 by the vertical fixing clamp device 32 is performed before fixing the workpiece 14 by the horizontal fixing clamp device 30, thereby fixing position accuracy. Can be increased.

  Next, another embodiment of the present invention will be described. In the following description, parts common to the embodiments are denoted by the same reference numerals and description thereof is omitted.

  FIG. 9 shows a main part when the bar cutting machine 10 cuts a material to be cut 110 which is a bar having an H-shaped cross section such as H-shaped steel. In the present embodiment, the material to be cut 110 is supported at two locations of the support member 112 and the delivery receiving member 28 that are directly or indirectly fixed to the machine frame 39 in close contact with the backing plate 38. The support surface which is the upper end surface of the support member 112 is set to the same height as the support surface 28 a of the output side receiving member 28. By using the positioning actuator 86 to move the position of the delivery-side receiving member 28 to a position indicated by, for example, a two-dot chain line, the workpiece 110 having an H-shaped cross section with a different size is preferably clamped. According to the present embodiment, the same effect as the above-described embodiment can be obtained.

  FIG. 10 shows a main part when the bar cutting machine 10 cuts a material to be cut 114 which is a bar having a U-shaped cross section such as channel steel or channel material. In the present embodiment, the material to be cut 114 is supported at two locations of the support member 112 and the delivery receiving member 28 that are fixed directly or indirectly to the machine frame 39 in close contact with the backing plate 38. The support surface which is the upper end surface of the support member 112 is set to the same height as the support surface 28 a of the output side receiving member 28. By using the positioning actuator 86 to move the position of the delivery receiving member 28 to, for example, a position indicated by a two-dot chain line, the workpiece 114 having a U-shaped cross section having a different size can be suitably clamped. According to the present embodiment, the same effect as the above-described embodiment can be obtained.

  11 and 12, the mounting structure of the base member 120 of another embodiment used in the longitudinal direction fixing clamp device 32 of the bar cutting machine 10 and the outlet receiving member 128 fixed thereto is mounted thereon. A direction of the axis O1 of the workpiece 14 and a direction perpendicular to the axis O1 are shown. In the present embodiment, a plurality of types of outlet receiving members corresponding to the diameter of the material to be cut 14 are prepared, represented by the first outlet receiving member 128 of FIG. 13 and the second outlet receiving member 130 of FIG. ing.

  The base member 120 is not formed with the guide groove 80 and the chamfered surface 82a as compared with the base member 82 of the above-described embodiment, and is a thin plate material, but the same surface as the chamfered surface 82b. A chamfered surface 120b is formed. The base member 120 is formed with a pair of through-holes for selectively attaching the first outlet-side receiving member 128 or the second outlet-side receiving member 130 to a common fixing place. A pair of bolts 134, which are fastening members, are screwed into a pair of female screw holes 132 formed in the first outgoing side receiving member 128 or the second outgoing side receiving member 130, whereby the first outgoing side receiving member 128 or the second The delivery side receiving member 130 is detachably fixed to the base member 120. In FIG. 11, the position where the bolt 134 of the base member 120 is mounted corresponds to the fixing place of the first outlet side receiving member 128 or the second outlet side receiving member 130.

  The first delivery-side receiving member 128 has a longitudinal plate-like fixing portion 128a in which a pair of female screw holes 132 are formed at both ends, and a first position of the fixing portion 128a so as to support the large-diameter workpiece 14. In other words, it includes a support portion 128b protruding upward from the central portion in the longitudinal direction. An inclined surface 128c that goes downward as it goes toward the entry side receiving member 27 is formed on the entry side receiving member 27 side of the fixed portion 128a, and the support portion 128b contacts the lower side of the material 14 to be cut. A support surface 128d for supporting the support surface 128d, and an output side inclined surface 128e that lowers from the support surface 128d as the distance from the input side receiving member 27 increases, following the support surface 128d.

  The second delivery-side receiving member 130 has a longitudinal fixing portion 130a in which a pair of female screw holes 132 are formed at both ends, and a second position of the fixing portion 130a, that is, a longitudinal direction so as to support the small-diameter workpiece 14. And a support portion 130b that protrudes upward from the end portion on the contact plate 38 side. An inclined surface is formed on the entrance side receiving member 27 side of the fixed portion 130a so as to go downward as it goes toward the entrance side receiving member 27. The support portion 130b contacts the lower side of the material 14 to be cut. A support surface 130d for supporting the support surface 130d and an output side inclined surface 130e that is lower from the support surface 130d as the distance from the input side receiving member 27 increases, following the support surface 130d.

  In FIG. 11, when the large-diameter workpiece 14 indicated by the solid line is cut, the first outlet receiving member 128 indicated by the solid line is fixed to the base member 120 by the bolt 134 and indicated by the two-dot chain line. When the small-diameter workpiece 14 is cut, the second delivery-side receiving member 130 indicated by a two-dot chain line is fixed to the base member 120 by the bolt 134. According to this embodiment, in addition to the same effects as those of the above-described embodiment, there is an advantage that the positioning actuator 86 and the movable mechanism driven by the positioning actuator 86 are not necessary.

  15 and 16 show a mounting structure of a base member 138 of another embodiment used in the longitudinal direction fixing clamp device 32 of the bar cutting machine 10 and an output side receiving member 140 fixed thereto. A direction of the axis O1 of the workpiece 14 and a direction perpendicular to the axis O1 are shown. The base member 138 of the present embodiment is a plate material on which a chamfered surface 138b having the same shape as the base member 120 described above is formed, but a through hole 142 for fixing the output side receiving member 140 at a plurality of positions is formed. The common outlet receiving member 140 is selectively fixed to any one of a plurality of fixing positions provided at a plurality of locations on the base member 138 according to the workpiece 14 having different diameters. Yes.

  In the base member 138 of this embodiment, a plurality of pairs of upper and lower through holes 142 for fixing the delivery receiving member 140 are formed at a plurality of locations (seven locations in this embodiment). The pair of bolts 134 that are passed through are screwed onto the delivery receiving member 140 so that the delivery receiving member 140 is fixed at a predetermined position of the base member 138 according to the diameter of the material to be cut 14. Yes. In the base member 138, a pair of upper and lower through holes 142 correspond to the fixing place of the outlet receiving member 140.

  The output side receiving member 140 is a prismatic member that is longitudinally long, and supports a support surface 140d for abutting and supporting the lower side of the material 14 to be cut, and the support surface 140d. A pair of female screw holes are formed in the lower part of the lower side of the support member 140d so as to be separated from the side receiving member 27.

  In FIG. 15, when the large-diameter workpiece 14 indicated by the solid line is cut, the delivery receiving member 140 indicated by the solid line is fixed to the base member 138 by the bolt 134 and has a small diameter indicated by the two-dot chain line. When the workpiece 14 is cut, the output side receiving member 140 indicated by a two-dot chain line is fixed to the base member 138 by the bolt 134. According to this embodiment, in addition to the same effects as those of the above-described embodiment, there is an advantage that the positioning actuator 86 and the movable mechanism driven by the positioning actuator 86 are not necessary.

  As mentioned above, although one Example of this invention was described in detail with reference to drawings, this invention is not limited to this Example, It can implement in another aspect.

  For example, in the above-described embodiment, the entry-side receiving member 27 has the same width dimension as the exit-side receiving member 28, and can be moved in the same manner in synchronization with the movement of the exit-side receiving member 28. Also good.

  Moreover, although the entrance side receiving member 27 of the above-mentioned Example was moved according to the magnitude | size of the to-be-cut materials 14,110,114, when the to-be-cut materials 14,110,114 are a single kind May not necessarily be movable, and may be fixed in the width direction thereof.

  In the above-described embodiment, the workpieces 14, 110, 114 are round steel bars, H-shaped steels, and groove-shaped steels. A bar having a cross-sectional shape may be used.

  Further, in the above-described embodiment, the bar cutting machine 10 is of a swing type, but is not limited thereto, and may be, for example, a horizontal slide type or a vertical slide type.

  In the above-described embodiments, vegetable oil is used as the cutting fluid to be misted. However, the present invention is not limited thereto, and for example, animal oil, mineral oil, synthetic oil, or a mixed oil thereof is used. May be.

  It should be noted that the above description is merely an embodiment, and other examples are not illustrated. However, the present invention is implemented in variously modified and improved modes based on the knowledge of those skilled in the art without departing from the gist of the present invention. Can do.

10: Bar cutting machine 14, 110, 114: Material to be cut 20: Circular saw 27: Entrance side receiving member 28: Exit side receiving member 28a: Support surface 28b: Exit side inclined surface 30: Lateral fixed clamp device 32: Longitudinal fixed clamp device (clamp device)
38: Contact plate 40: Hydraulic cylinder (actuator)
42: Clamp pad (pressing member)
46: Carbide tip (peripheral blade)
82, 120, 138: base member 82a: chamfered surface 84: moving member 84a: receiving member mounting portion 84b: inclined surface 86: positioning actuator 128: first output side receiving member 130: second output side receiving members 128d, 130d : Support surface 128e, 130e: Outlet inclined surface 128a, 130a: Fixing portion 128b, 130b: Support portion 128c: Inclined surface 132: Female screw hole 134: Bolt (fastening member)
140: Outlet receiving member 142: Through hole (fixed place)
K: Chip

Claims (9)

When cutting the bar material into a predetermined length by rotating the disk-shaped circular saw having a plurality of outer peripheral blades continuous in the circumferential direction into the long bar material while rotating it, A bar cutting machine provided with a clamp device that clamps the vicinity of the tip of the bar into which the circular saw is cut,
The clamping device includes an entrance receiving member and an exit receiving member fixed in the longitudinal direction of the bar with a predetermined gap for allowing the circular saw to pass through the longitudinal direction of the bar. , Sandwiching the bar between the pressing member moved by the actuator,
The delivery side receiving member has a support surface having a predetermined width dimension smaller than the width direction dimension of the bar material, and is provided so as to be movable in the width direction of the bar material. A bar cutting machine characterized by supporting a bar.   2. The bar cutting machine according to claim 1, wherein the output side receiving member has an output side inclined surface that becomes lower from the support surface as it is separated from the input side receiving member. A fixed base member;
A moving member that is guided by a guide groove provided in the base member so as to be movable in the width direction of the bar, and in which the outlet receiving member is fixed;
The bar cutting machine according to claim 1, further comprising a positioning actuator connected to the moving member to change the position of the delivery receiving member.   The moving member has a receiving member mounting portion in which the output side receiving member is fixed to a part of the upper end edge portion, and the receiving member mounting portion of the upper end edge portion so as to become lower toward the inlet side receiving member. The bar cutting machine according to claim 3, further comprising an inclined surface formed in a portion excluding the portion. The moving member is a plate-like member provided in close contact with the side surface of the base member on the entry side receiving member side,
The base member has a chamfered surface that becomes lower toward the entry side receiving member at a corner between the side face and the upper surface on the entry side receiving member side,
The bar cutting machine according to claim 3 or 4, wherein the inclined surface formed on the moving member is inclined following the chamfered surface.   The chamfered surface formed at a corner between the side surface and the upper surface of the position-fixed base member on the entry side receiving member side, and the inclined surface of the moving member that is inclined following the chamfered surface 6. The bar cutting machine according to claim 5, wherein a lower end of the chamfered surface projects a predetermined amount toward the entry side receiving member than an upper end of the inclined surface. The clamp device includes a laterally fixed clamp device that laterally clamps the vicinity of the tip portion of the bar material into which the circular saw is cut, and a vertical direction fixed clamp that clamps the vicinity of the distal end portion of the bar material in the vertical direction. Equipped with equipment,
2. The bar cutting machine according to claim 1, wherein the vertical fixing clamp device presses the bar from above by a pressing member moved by the actuator and clamps the bar with the entry side receiving member. A position fixing base member provided with a common fixing place for removably fixing the outlet receiving member to a predetermined fixing position using a fastening member;
The delivery-side receiving member has a fixing part fixed to the fixing place and a support part protruding upward from the fixing part, and the support part is located at a first position with respect to the fixing part. A first output side receiving member and a second output side receiving member in which the support portion is located at a second position different from the first position with respect to the fixed portion;
The bar cutting machine according to claim 1 or 2, wherein the first outlet side receiving member and the second outlet side receiving member are selectively fixed to a fixing place of the base member. A position fixing base member provided with a plurality of preset fixing places for fixing the delivery receiving member detachably using a fastening member;
The bar cutting machine according to claim 1 or 2, wherein the outlet receiving member is selectively fixed to a plurality of fixing locations of the base member.

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