JP5365621B2 - Work cutting device and work cutting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a workpiece cutting apparatus and a method of cutting a workpiece where a sliding state or a holding state of a plurality of piles of blockish workpieces is stabilized, and the cutting accuracy of the workpiece is improved. <P>SOLUTION: The workpiece cutting apparatus includes: a workpiece cutting part having a plurality of wires for simultaneously cutting a cluster of workpieces comprising a plurality of blockish workpieces stacked with their end surfaces pushed against one another into a plurality flaky workpieces; a workpiece positioning element having a positioning reference plate having a positioning reference plane parallel to a section of the workpiece cut by the wire cutting part and having positional relation with the wire set, and a positioning holding member for positioning the workpiece to prevent it from shifting in a direction orthogonal to the positioning reference plane while the workpieces is pushed against the positioning reference plane; and a push-out means for pushing out the workpiece in the cutting direction toward the fixedly positioned workpiece cutting part. The positioning holding member has a pressing part capable of pressing the blockish workpiece which is cut by the workpiece cutting part. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a workpiece cutting apparatus and a workpiece cutting method for simultaneously cutting a workpiece to be cut into a plurality of flaky workpieces using a multi-wire workpiece cutting section.

  Conventionally, a plurality of thin pieces are simultaneously used by using a multi-wire work cutting unit in which fine wires are arranged in multiple rows at an equal pitch on a work made of a hard and brittle material such as a semiconductor material, a glass material, a ceramic, or a magnetic material. There is a multi-wire saw that cuts into a workpiece.

  For example, a conventional multi-wire saw is bonded to a base such as a glass plate while positioning the workpiece using two adjacent orthogonal reference plates for setting a plurality of workpieces to be cut simultaneously on the wire saw. I am trying to paste it with an agent. And the workpiece fixed on the glass plate is set with respect to the multi-wire saw, and the glass plate side is moved upwardly toward the multi-wire saw side, so that the workpiece is brought together with each wire of the multi-wire saw at an equal pitch arrangement with each glass plate. It is made to cut | disconnect (for example, refer patent document 1).

  In the apparatus of Patent Document 1, even when the work is fixed while positioning using the positioning reference plate, the work fixing position is inclined or shifted depending on the amount of adhesive applied or the situation during curing. . As a result, the cutting accuracy decreases when cutting with a multi-wire saw. In particular, the cutting position accuracy cannot be obtained at both ends of the joint portion between the workpieces. For this reason, the flaky workpieces at both ends are discarded as defective products, and the workpiece material is wasted. Alternatively, the flaky workpieces at both ends may be used as a recycled material, but the flaky workpieces at both ends are returned to the raw material, which is not an efficient reuse. Further, since an adhesive is used for fixing the workpiece, an adhesive process before cutting and a peeling process after cutting are inevitably required. The bonding work time and adhesive curing time in the bonding process take a great deal of time, for example, 6 hours, and the sorting work time and peeling time in the peeling process, for example, takes about 2 hours. Yes, it is inefficient and wastes process and time. Furthermore, since the apparatus of Patent Document 1 also cuts sub-members such as an adhesive and a glass plate, these cutting wastes are used for the surface properties of the flaky workpiece (surface smoothness, surface resistance, plating film-forming properties). ) May worsen.

  Therefore, it is desired to improve the cutting accuracy by positioning and fixing the workpiece without using an adhesive. For example, Patent Document 2 describes a workpiece cutting device that does not require an adhesion process or a peeling process.

JP-A-10-128649 Japanese Patent No. 4355029

  In FIG. 2 of Patent Document 2, it is possible to down-cut by arranging a wire cutting portion on the lower side of the clamping reference plate, and cutting the workpiece by pushing it toward the lower wire by an extrusion pusher as an extrusion means from above. A simple workpiece cutting device is described. In the workpiece cutting device capable of down-cutting, a positioning press plate disposed opposite to the positioning reference plate is provided as a positioning press member, and the workpiece positioning body is constituted by the positioning reference plate. The positioning presser plate is formed, for example, in the shape of a vertically long bar, and presses and contacts the workpiece to be positioned against the positioning reference surface to position it elastically and slidably in the cutting direction (vertical direction). Here, the positioning presser plate uniformly presses the plurality of block-shaped workpieces in order to eliminate variations in the pressure applied to the workpiece assembly including the plurality of block-shaped workpieces.

  This workpiece cutting device positions and fixes a plurality of block-shaped workpieces without using an adhesive. For this reason, the block-shaped work is pushed out toward the lower wire by the push pusher and cut only by stacking the plurality of block-shaped works individually. Thereby, even if each block-shaped workpiece varies, it is within the allowable range. However, when the block-shaped workpieces are stacked in a plurality of stages, dimensional variations or positional variations are accumulated. As a result, the pressing force applied to the workpiece assembly pressed by the positioning presser plate may vary partially, and the sliding state of the block-shaped workpiece over multiple stages may not be stable, which may affect the cutting accuracy. .

  The present invention has been made in view of the above, and a workpiece cutting device in which a sliding state or a holding state of a plurality of block-shaped workpieces is stable and cutting accuracy is improved without using an adhesive, and An object is to provide a work cutting method.

  In order to solve the above-described problems and achieve the object, the workpiece cutting device includes a plurality of wires that simultaneously cut a plurality of block-shaped workpieces into a plurality of piece-shaped workpieces by pressing end surfaces of a plurality of block-shaped workpieces against each other. A workpiece cutting portion having a positioning reference plate having a positioning reference surface parallel to the wire cutting surface of the workpiece cutting portion and set in a positional relationship with the wire, and the workpiece on the positioning reference surface A workpiece holding body for positioning the workpiece so as not to deviate in a direction perpendicular to the positioning reference surface in a state of pressing, a workpiece positioning body positioned by the workpiece positioning body, and in the longitudinal direction of the wire A workpiece clamping body that clamps both ends of the workpiece located at a position, and the workpiece with respect to the workpiece cutting portion fixed in position. It includes a pushing means for pushing the cross-sectional direction, and the positioning holding member is characterized by having a pressable pressing portion against the block-shaped workpiece being cut by the work cutting portion.

  As a result, even if position variation may occur due to accumulation of dimensional variations of the block-shaped workpiece, pressure is applied to the block-shaped workpiece cut by the workpiece cutting portion, so the pressing force reduces partial variations. can do. For this reason, it is possible to reduce the possibility that the block-shaped workpiece partially falls off. As a result, the workpiece can be positioned and fixed and cut without using an adhesive. And the position where a workpiece | work is fixed becomes stable, and the precision which a workpiece | work cutting device cut | disconnects a workpiece | work can be improved. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  As a desirable mode of the present invention, it is preferable that the positioning holding member has a sliding unit that pressably contacts the positioning reference surface to position the workpiece slidably. Thereby, the sliding unit can press and hold a plurality of block-shaped works. Moreover, the attitude | position of the some block-shaped workpiece | work which a sliding unit is extruded by the extrusion means can be guided.

  As a desirable mode of the present invention, it is preferable that the holding member for positioning has the pressing portion sandwiched between the sliding units. Thereby, the positioning holding member can correct the partial position variation of the block-shaped workpiece while guiding the postures of the plurality of block-shaped workpieces pushed out by the pushing means by the sliding unit. As a result, the position where the workpiece is fixed becomes stable, and the accuracy with which the workpiece cutting device cuts the workpiece can be improved.

  As a desirable mode of the present invention, it is preferable that the positioning holding member has a plurality of pressing portions, and the plurality of pressing portions are sandwiched between a pair of sliding units. Thereby, the some press part can correct the position variation of a partial block-shaped workpiece. As a result, it is possible to improve the correction accuracy of the position variation of the block workpiece.

  As a desirable aspect of the present invention, it is preferable that the pressing member and the sliding unit are alternately arranged in the positioning holding member. Thereby, the some press part can correct the position variation of a partial block-shaped workpiece. As a result, it is possible to improve the correction accuracy of the position variation of the block workpiece.

  As a desirable mode of the present invention, it is preferable that the length of the pressing portion in the direction in which the workpiece is cut is set shorter than the length of the block-shaped workpiece in the direction in which the workpiece is cut. Thereby, the 1 or 2 block-shaped workpiece | work with which a press part is piled up can be hold | maintained.

  As a desirable mode of the present invention, it is preferable to have a second pressing portion that can be pressed against a block-shaped workpiece that is different from the block-shaped workpiece that can be pressed by the pressing portion among the block-shaped workpieces that constitute the workpiece. Thereby, the 2nd press part can hold | maintain the workpiece | work which is the aggregate | assembly which pressed and piled up the end surfaces of several block-shaped workpieces. For this reason, the 2nd press part can be hold | maintained in the press location which disperse | distributed several block-shaped workpieces. As a result, the number of a plurality of block-shaped workpieces that can be held by the workpiece cutting device can be increased.

  As a desirable mode of the present invention, it is preferable that the length of the second pressing portion in the direction in which the workpiece is cut is set shorter than the length of the block-shaped workpiece in the direction in which the workpiece is cut. Thereby, the 1 or 2 block-shaped workpiece | work with which a press part is piled up can be hold | maintained.

  In order to solve the above-described problems and achieve the object, the workpiece cutting method prepares a workpiece as an assembly in which end faces of a plurality of block-shaped workpieces are pressed against each other, and inputs the workpiece into a workpiece cutting device. Cutting by the workpiece cutting portion, including a feeding step and a cutting step of extruding the workpiece while being held against a workpiece cutting portion having a plurality of wires for simultaneously cutting the workpiece into a plurality of piece-like workpieces The position of the block-shaped workpiece to be adjusted is adjusted.

  Thereby, even when position variation may occur due to accumulation of dimensional variation of the block-shaped workpiece, a pressing force is applied to the block-shaped workpiece closest to the workpiece cutting portion among the block-shaped workpieces constituting the workpiece, This pressing force can reduce partial variations. For this reason, the position variation of the block-shaped workpiece is partially corrected, and the accuracy of the position of the block-shaped workpiece with respect to the workpiece cutting portion can be improved. As a result, the workpiece can be positioned and fixed and cut without using an adhesive. And the position where a workpiece | work is fixed becomes stable, and the precision which a workpiece | work cutting device cut | disconnects a workpiece | work can be improved. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  In the workpiece cutting apparatus and the workpiece cutting method of the present invention, the sliding state or holding state of a plurality of block-shaped workpieces is stabilized without using an adhesive, and the cutting accuracy is improved.

FIG. 1 is a schematic view of a workpiece cutting device. FIG. 2 is a schematic diagram for explaining the positioning holding member according to the present embodiment. FIG. 3 is an explanatory diagram for explaining the member relationship of the positioning holding member according to the present embodiment. FIG. 4 is an explanatory diagram for explaining the holding state of the workpiece as seen in the IV-IV cross section shown in FIG. FIG. 5 is an explanatory diagram for explaining the holding state of the workpiece as seen in the VV cross section shown in FIG. FIG. 6 is a flowchart for explaining a cutting process of the workpiece cutting apparatus according to the present embodiment. FIG. 7 is an explanatory view illustrating a cutting process of the workpiece cutting device. FIG. 8 is an explanatory diagram for explaining a cutting process of the workpiece cutting device. FIG. 9 is an explanatory diagram for explaining a cutting process of the workpiece cutting apparatus. FIG. 10 is an explanatory diagram for explaining a cutting process of the workpiece cutting apparatus. FIG. 11 is a schematic diagram illustrating a positioning holding member according to the second embodiment. FIG. 12 is a schematic diagram illustrating a positioning holding member according to the third embodiment. FIG. 13 is a schematic diagram illustrating a positioning holding member according to the fourth embodiment. FIG. 14 is a perspective view showing a specific configuration of the workpiece cutting device. FIG. 15 is a perspective view showing a specific configuration of a workpiece cutting device according to a modification. FIG. 16 is a schematic diagram showing a modification of the work assembly.

  DESCRIPTION OF EMBODIMENTS Embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. The constituent elements described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the constituent elements described below can be appropriately combined.

(Embodiment 1)
FIG. 1 is a schematic view of a workpiece cutting device. The workpiece cutting device 100 includes a workpiece cutting unit 10 including a plurality of wires 11, a positioning reference plate 21, a clamping reference plate 31, a positioning holding member 22, a clamping holding member 32, and an extrusion pusher 40. Have. Further, a space surrounded by the positioning reference plate 21, the clamping reference plate 31, the positioning holding member 22, and the clamping holding member 32 is a storage unit (work storage unit) of the workpiece assembly 1.

  The block-shaped workpieces 2 are stacked in a plurality of stages, and the block-shaped workpieces 2 gather to form a workpiece assembly 1. Moreover, the block-shaped workpieces 2 are arranged in a plurality of rows, and the block-shaped workpieces 2 are gathered to form a workpiece assembly 1. The block-shaped workpieces 2 are positioned and fixed without using an adhesive. The block-shaped workpiece 2 has a rectangular shape, for example, a rectangular parallelepiped having the same shape.

  The block-shaped workpiece 2 can be made of a hard and brittle material such as a semiconductor material, a glass material, a ceramic, and a magnetic material. The block-shaped workpiece 2 can be an expensive material, for example, a rare earth sintered magnet.

  The workpiece cutting unit 10 is a multi-wire saw system driven by a plurality of guide rollers 12a and 12b in which a plurality of wires 11 arranged at predetermined intervals and guide grooves for stably running these wires 11 are formed. It is a cutting means.

  The wire 11 is a metal wire such as carbon steel. The workpiece cutting unit 10 including the plurality of wires 11 reciprocates the plurality of wires 11 by the guide rollers 12a and 12b. The workpiece assembly 1 to be cut is simultaneously cut into a plurality of piece-like workpieces by the plurality of wires 11. Since the workpiece assembly 1 is simultaneously cut into a plurality of piece-like workpieces, the workpiece cutting device 100 is a multi-wire type cutting device. The wire 11 of the workpiece cutting unit 10 is, for example, a fixed abrasive method.

  The positioning reference plate 21 is parallel to the cutting surface of the workpiece cutting unit 10 by the wire 11 (a vertical surface formed by the wire 11 by relative movement at the time of cutting) and the positioning reference surface 21a in which the positional relationship with the wire 11 is set. Have

  The positioning holding member 22 prevents the workpiece from being displaced in a direction (front-rear direction) perpendicular to the positioning reference surface 21a in a state where the workpiece assembly 1 is pressed against the positioning reference surface 21a as shown by an arrow A during cutting. It is a member for positioning the assembly 1.

  The workpiece cutting device 100 places the positioning holding member 22 opposite to the positioning reference plate 21. The positioning holding member 22 is formed, for example, in the shape of a vertically long bar, and is elastically slidable in the cutting direction (vertical direction) by pressing the workpiece assembly 1 to be positioned against the positioning reference surface 21a. Position. For this reason, the positioning holding member 22 has a pressing means described later. Then, the positioning reference plate 21 and the positioning holding member 22 become the workpiece positioning body 20A. Here, the positioning holding member 22 is provided for each column in the left-right direction of the block-like workpieces 2 in order to eliminate variations in pressing against the workpiece assembly 1 composed of the plurality of block-like workpieces 2.

  The clamping reference plate 31 has a clamping reference surface 31a in which a positional relationship that is orthogonal to the longitudinal direction of the wire 11 of the workpiece cutting unit 10 is set. As shown in FIG. 1, the clamping reference plate 31 has comb-shaped ends in the direction in which the workpiece assembly 1 is cut, and a plurality of gaps are formed. Further, the wire 11 passes through the gap of the clamping reference plate 31.

  The holding member 32 for holding the workpiece prevents the workpiece assembly 1 from shifting in a direction (left-right direction) orthogonal to the holding reference surface 31a in a state where the workpiece assembly 1 is pressed against the holding reference surface 31a as shown by an arrow B at the time of cutting. It is a member for clamping both ends of the assembly 1.

  In the workpiece cutting device 100, the holding member 32 for clamping is arranged to face the reference plate 31 for clamping. The holding member 32 for clamping is formed, for example, in the shape of a vertically long bar, and is elastically slidable in the cutting direction (vertical direction) by pressing the workpiece assembly 1 to be clamped against the clamping reference surface 31a. Hold it. For this reason, the holding member 32 for clamping has a pressing means by a spring or the like. The clamping reference plate 31 and the clamping holding member 32 become a workpiece clamping body 30A that is positioned by the workpiece positioning body 20A and clamps both ends of the workpiece assembly 1 positioned in the wire longitudinal direction. Here, the holding member 32 for clamping is provided for each of the rows in the front-rear direction of the block-shaped workpieces 2 in order to eliminate variations in pressing against the workpiece assembly 1 including the plurality of block-shaped workpieces 2.

  The clamping reference plate 31 and the clamping holding member 32 are integrated into a guide frame shape surrounding the workpiece assembly 1 together with the positioning reference plate 21 and the positioning holding member 22 to form a storage portion for the workpiece assembly 1.

  The extrusion pusher 40 is an extrusion means that extrudes in a direction (arrow U direction) in which the workpiece assembly 1 is cut. The pusher pusher 40 preferably has an area that can uniformly press the entire upper surface of the workpiece assembly 1. The area of the pusher pusher 40 is the opening area of the storage portion of the work assembly 1 that is a space surrounded by the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping holding member 32. Or an area that is not in contact with the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping holding member 32. The direction in which the workpiece assembly 1 is cut (the direction of the arrow U) is a direction parallel to the direction in which the pushing means pushes out the workpiece assembly 1.

  Next, the positioning holding member of this embodiment will be described in detail. FIG. 2 is a schematic diagram for explaining the positioning holding member according to the present embodiment. FIG. 3 is an explanatory diagram for explaining the member relationship of the positioning holding member according to the present embodiment.

  The above-described positioning holding member 22 includes sliding units 51, 51, a holding unit 61, and a holding unit 62 as shown in FIG. The holding unit 61 and the holding unit 62 are arranged one above the other and become the holding unit 60. As shown in FIG. 2, the holding unit 60 having the holding unit 61 and the holding unit 62 is disposed between the sliding units 51 and 51. A recess 63 is formed in a space surrounded by the sliding units 51, 51, the holding unit 61, and the holding unit 62. As shown in FIG. 3, the height T1 of the sliding unit 51 is longer than the sum of the height T2 of the holding unit 61 and the height T3 of the holding unit 62. The thickness D1 of the sliding unit 51 includes a certain sliding surface 51A from the workpiece input side toward the wire 11 side. The sliding unit 51 has a tapered portion 51B on the workpiece input side.

  The holding unit 61 shown in FIG. 2 includes a pressing portion 61A, and a tapered portion 61B that increases in thickness from the workpiece input side end surface 61C of the holding unit 61 to the pressing portion 61A to form an inclined surface. The pressing portion 61A of the holding unit 61 includes a stepped portion 61D on the wire side, and includes a contact avoiding portion 61E that is lower than the pressing portion 61A by the stepped portion 61D. As shown in FIG. 3, the thickness D2 of the pressing portion 61A is the same as the thickness D1 of the sliding unit 51 or thicker than D1. FIG. 3 shows the direction in which the workpiece assembly 1 is cut (direction of arrow U). Further, the height t1, which is the length of the pressing portion 61A in the direction in which the workpiece assembly 1 is cut, is higher than the height WT, which is the length in the direction in which the workpiece assembly 1 of the block workpiece to be inserted is cut. Is also preferably set to be short. Thereby, the 1 or 2 block-shaped workpiece | work which the press part 61A piles up can be hold | maintained. The stepped portion 61D is formed so that the contact avoiding portion 61E has a thickness that does not contact the block-shaped workpiece.

  The holding unit 62 includes a pressing portion (second pressing portion) 62A shown in FIG. 2, a taper portion 62B that forms an inclined surface by increasing the thickness from the workpiece loading side end surface 62C of the holding unit 62 to the pressing portion 62A, Is included. As shown in FIG. 3, the thickness D3 of the pressing part 62A is the same as the thickness D1 of the sliding unit 51 or thicker than D1. Moreover, it is preferable that the height t2, which is the length of the pressing portion 62A in the direction in which the workpiece assembly 1 is cut, is set shorter than the height WT of the block-shaped workpiece to be inserted. Thereby, the 1 or 2 block-shaped workpiece | work which the press part 62A piles up can be hold | maintained.

  FIG. 4 is an explanatory diagram for explaining the holding state of the workpiece as seen in the IV-IV cross section shown in FIG. As shown in FIG. 4, the workpiece cutting apparatus 100 holds the workpiece assembly 1 by being sandwiched between a positioning reference plate 21 and a positioning holding member 22. The workpiece cutting device 100 includes a pressing unit 70 that presses the holding unit 61 and the holding unit 62 toward the workpiece assembly 1. The pressing means 70 includes a shaft 71 connected to the holding unit 61 or the holding unit 62, an elastic body 72 such as a spring or rubber, and a bearing 73. Each of the holding unit 61 and the holding unit 62 is preferably provided with a plurality of pressing means. As a result, the pressing portions 61A and 62A of the holding unit 61 and the holding unit 62 can be swung independently. As a result, the pressing portions 61A and 62A can apply an appropriate pressing force to the block-shaped workpiece according to the variation and mounting state of the block-shaped workpiece.

  FIG. 4 shows a state in which the work aggregate 1 includes block-shaped works 201 to 208, 211 to 218, and 221 to 228. The pressing part 61A of the holding unit 61 is above the wire 11 (on the extrusion means side). In FIG. 4, the wire 11 of the workpiece cutting device 100 is positioned below the step portion 61 </ b> D of the holding unit 61 (in the direction in which the workpiece assembly 1 is cut). Here, since the wire 11 is somewhat bent by cutting, the wire 11 swings up and down in the region C. However, it is more preferable that the height t1 of the pressing portion 61A shown in FIG. Accordingly, even when an unintended force is applied to the block-shaped workpieces 201, 211, and 221 due to the swinging of the wire, the posture of the block-shaped workpieces 201, 211, and 221 can be kept constant. As a result, the cutting accuracy of the block-shaped workpieces 201, 211, and 221 is increased.

  In FIG. 4, the pressing portion 62 </ b> A of the holding unit 62 presses the block-shaped workpieces 206, 216, and 226 in the workpiece assembly 1. Since the pressing portion 61A and the pressing portion 62A are arranged differently in the direction in which the workpiece assembly 1 is cut, the pressing portion 62A is configured such that the pressing portion 61A among the block-shaped workpieces constituting the workpiece assembly 1 is the pressing portion 61A. It becomes possible to press against the block-shaped workpieces 206, 216, 226 different from the block-shaped workpieces 201, 211, 221 that can be pressed. Accordingly, the block-shaped workpieces 206, 216, and 226 or more are mainly held by the pressing portion 62A of the holding unit 62. As a result, even if a large number of block workpieces are stacked, a part of the load applied to the pressing portion 61A is held by the pressing portion 62A, and the load can be dispersed. For this reason, the possibility that the workpiece assembly 1 may fall off due to impact or the like can be reduced. That is, the pressing part 62 </ b> A of the holding unit 62 can increase the number of stacked block-shaped works. If a plurality of pressing portions 62A are provided in the direction in which the workpiece assembly 1 is cut, the number of stacked block-like workpieces can be further increased.

  In FIG. 4, since the pressing unit 62A of the holding unit 62 is provided, even if the pressing force applied to the pressing unit 61A of the holding unit 61 is reduced, the possibility that the workpiece assembly 1 is dropped is reduced. For this reason, the operation | movement which the extrusion pusher 40 pushes out the workpiece | work aggregate | assembly 1 can be made smooth.

  FIG. 5 is an explanatory diagram for explaining the holding state of the workpiece as seen in the VV cross section shown in FIG. As shown in FIG. 5, the workpiece cutting device 100 includes the above-described pressing means 70 that presses the sliding unit 51 toward the workpiece assembly 1. Each sliding unit 51 is preferably provided with a plurality of pressing means. Thereby, the sliding surface 51A of the sliding unit 51 can be uniformly pressed against the workpiece assembly 1 and slid. As a result, the sliding surface 51A can apply an appropriate pressing force to the block-shaped workpieces 201 to 208.

  As described above, the workpiece cutting apparatus 100 according to the present embodiment includes a plurality of wires 11 that simultaneously cut the workpiece assembly 1 that is formed by pressing end surfaces of a plurality of block-shaped workpieces 2 into a plurality of piece-shaped workpieces. The cutting unit 10, a positioning reference plate 22 having a positioning reference surface 21 a parallel to the cutting surface of the workpiece cutting unit 10 by the wire 11 and set in a positional relationship with the wire 11, and a workpiece set on the positioning reference surface 21 a A workpiece positioning body having a positioning holding member 22 for positioning the workpiece assembly 1 so as not to shift in a direction orthogonal to the positioning reference surface 21a in a state in which the body 1 is pressed, and the workpiece positioning body is positioned by the workpiece positioning body. In addition, the workpiece holding body that holds both ends of the workpiece assembly 1 positioned in the longitudinal direction of the wire and the workpiece assembly 1 are fixed in position. It includes a pushing means for pushing the work cutting portion 10, a positioning holding member 22 has a depressible pressing portion 61A against the block-shaped workpiece 2 which had been cut with the workpiece cutting portion 11.

  Even if the size of each block-shaped workpiece varies and the size of each block-shaped workpiece is within the allowable range, if the block-shaped workpieces are stacked in multiple stages, the accumulation of dimensional variations Positional variation may occur. In the workpiece cutting device according to the present embodiment, pressure is applied to the block-shaped workpiece cut by the workpiece cutting unit, so that the pressing force can reduce partial variations. For this reason, it is possible to reduce the possibility that the block-shaped workpiece partially falls off. As a result, the workpiece cutting device 100 can position and fix and cut the workpiece without using an adhesive. And the position where a workpiece | work is fixed is stabilized, and the precision which a workpiece | work cutting device cut | disconnects a workpiece | work can be improved. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  Further, the position variation of the block workpiece is partially corrected by the pressing portion 61A, and the accuracy of the position of the block workpiece relative to the workpiece cutting portion can be improved. As a result, the workpiece can be positioned and fixed and cut without using an adhesive.

  The positioning holding member 22 preferably has a sliding unit 51 that presses and contacts the workpiece assembly 1 to the positioning reference surface 21a so as to be slidable. Thereby, the sliding unit 51 can press and hold the plurality of block-shaped workpieces 2. Moreover, the attitude | position of the some block-shaped workpiece | work 2 with which the sliding unit 51 is extruded by the extrusion means (extrusion pusher 40) can be guided.

  In the positioning holding member 22, it is preferable that the pressing portion 61 </ b> A is sandwiched between the sliding units 51. Thereby, the positioning holding member 22 can correct the partial position variation of the block-shaped workpiece 2 while guiding the postures of the plurality of block-shaped workpieces 2 pushed out by the pushing means (extrusion pusher 40). . As a result, the position where the workpiece assembly 1 is fixed is stabilized, and the accuracy with which the workpiece cutting device cuts the workpiece can be improved.

  The positioning holding member 22 has a second pressing portion 62 </ b> A capable of pressing against a block-shaped workpiece different from the block-shaped workpiece closest to the workpiece cutting portion 10 among the block-shaped workpieces 2 constituting the workpiece assembly 1. Is preferred. Thereby, the 2nd press part 62A can hold | maintain the workpiece | work aggregate | assembly 1 which piled up by pressing the end surfaces of the some block-shaped workpieces 2 against each other. For this reason, the 2nd press part 62A can hold | maintain the some block-shaped workpiece | work 2 in the press location which disperse | distributed. As a result, the number of a plurality of block-shaped workpieces that can be held by the workpiece cutting device can be increased.

  Next, the operation of the workpiece cutting device 100 will be described. FIG. 6 is a flowchart for explaining a cutting process of the workpiece cutting apparatus. 7-10 is explanatory drawing explaining the cutting process of a workpiece | work cutting device. The cutting process of the workpiece cutting apparatus 100 will be described along the flowchart of FIG.

  The workpiece cutting device 100 prepares a workpiece receiving plate 80 (step S1). For example, as shown in FIG. 7, the workpiece receiving plate 80 is positioned below the positions of the clamping reference plate 31, the clamping holding member 32, and the wire 11 (the direction in which the pushing means pushes out the workpiece assembly 1). It is installed by a lift mechanism or the like. Although not shown, the workpiece receiving plate 80 is located below the position of the end portion of the positioning reference plate 21 and the positioning holding member 22 in the direction in which the workpiece assembly 1 is cut (the pushing means is the workpiece assembly). 1 in the direction of pushing 1). The workpiece receiving plate 80 is larger than the area of the surface perpendicular to the workpiece traveling direction of the workpiece assembly 1.

  Next, the workpiece cutting device 100 puts the workpiece into the workpiece storage unit of the workpiece cutting device 100 (step S2). The workpiece assembly 1 is thrown into the workpiece storage unit as an assembly in which the end faces of a plurality of block-shaped workpieces are pressed against each other. As shown in FIG. 7, the work assembly 1 includes block-shaped works 2 </ b> A to 2 </ b> L. As shown in FIG. 1, the workpiece assembly 1 is held between the positioning reference plate 21 and the positioning holding member 22 and between the clamping reference plate 31 and the clamping holding member 32.

  Next, the workpiece cutting device 100 cuts the workpiece (step S3). In the workpiece cutting device 100 shown in FIG. 1, a plurality of wires 11 reciprocate by guide rollers 12a and 12b. The workpiece cutting device 100 positions and fixes a plurality of block-shaped workpieces 2 without using an adhesive. For this reason, the block-shaped workpiece 2 is pushed out toward the lower wire 11 by the push pusher 40 and cut only by stacking the block-shaped workpieces 2 in a plurality of stages. The pusher pusher 40 pushes out the workpiece assembly 1, and the block-like workpiece is pushed out. Here, as shown in FIG. 5, the sliding surface 51 </ b> A of the sliding unit 51 slides with respect to the block workpieces 201 to 208. The sliding surface 51A serves as a guide in the direction in which the pusher pusher 40 pushes out the workpiece assembly 1 (the direction in which the workpiece assembly 1 is cut).

  Even if the size of each block-shaped workpiece varies and the size of each block-shaped workpiece is within the allowable range, if the block-shaped workpieces are stacked in multiple stages, the position is accumulated due to the accumulation of dimensional variations. Variations may occur. In this case, the pressing force with which the sliding surface 51A of the sliding unit 51 shown in FIG. For example, when a block-shaped workpiece step that does not contact with the block-shaped workpiece step with which the sliding surface 51A abuts may occur, the block-shaped workpiece may partially fall off.

  The pressing portion 61 </ b> A of the holding unit 61 can press and hold the block-shaped workpiece on which the sliding surface 51 </ b> A of the sliding unit 51 does not come into contact due to dimensional variation or position variation of the block-shaped workpiece. The pressing portion 61 </ b> A of the holding unit 61 holds the block-shaped workpiece cut by the wire 11 or the block-shaped workpiece immediately before cutting. Thereby, until it cuts with the wire 11, the positional variation by accumulation of the dimensional variation by stacking of a block-shaped workpiece | work is permitted. And as shown in FIG. 4, 61 A of press parts can be pressed with respect to the block-shaped workpiece | work 201, 211, 221 currently cut | disconnected by the wire 11 of the workpiece | work cutting | disconnection part 10. FIG. As a result, the push-out pusher 40 can smoothly push out the workpiece assembly 1. Further, the pressing force held by the sliding surface 51A of the sliding unit 51 may be weakened, and the possibility that the workpiece assembly 1 is damaged due to sliding with the sliding unit 51 can be reduced.

  The taper portion 61B of the holding unit 61 shown in FIG. 2 guides each block-shaped workpiece to the position of the pressing portion 61A of the holding unit 61 when there is dimensional variation or position variation due to the stacked block-shaped workpieces. Thereby, the block-shaped workpiece | work cut | disconnected with the wire 11 is guided to a predetermined position. And the position of a block-shaped workpiece | work is adjusted because the press part 61A of the holding unit 61 presses. As a result, cutting accuracy is improved. In addition, when there is no dimensional variation or position variation due to the stacked block-shaped workpieces, the pressing portion 61A of the holding unit 61 may not press the block-shaped workpieces. As shown in FIG. 2, the sliding unit 51 and the holding unit 61 do not interfere with each other and press each block-like work independently. As a result, the block-shaped workpiece having dimensional variation or position variation is held by the pressing portion 61 </ b> A of the holding unit 61.

  Since the workpiece assembly 1 including the block-like workpieces 2A to 2L is not bonded, as shown in FIG. 8, when cutting is completed, the workpiece assembly 1 becomes a piece-like workpiece 2a and the like, and falls one by one in the arrow Y direction. Move up 80. Depending on the state of the wire 11, there may be a time difference in the cutting of the workpiece assemblies 1 even in the block-like workpieces 2 </ b> A, 2 </ b> B, and 2 </ b> C at the same stage on the side where the workpiece assembly 1 is cut. For example, the block-shaped workpiece 2A shown in FIG. 7 is first cut into a piece-shaped workpiece 2a shown in FIG. The piece-shaped workpiece 2a moved onto the workpiece receiving plate 80 shown in FIG. 8 is in contact with the holding member 32 for clamping and one end surface of the piece-shaped workpiece 2a, and the workpiece assembly 1 is cut at the distance of contact. A distance Z1 in the direction. 8 illustrates an example in which the piece-like workpiece 2a moved onto the workpiece receiving plate 80 is in contact with the holding member 32 for holding and one end surface of the piece-like workpiece 2a. Instead of 32, any one of the positioning reference plate 21, the positioning holding member 22, and the clamping reference plate 31 may come into contact with one surface of the end surface of the piece workpiece 2a. Further, the piece-like workpiece 2a is in contact with the block-like workpiece 2B being cut by the workpiece cutting unit 10 and one end surface of the piece-like workpiece 2a, and the contact distance is a distance in a direction in which the workpiece assembly 1 is cut. Z2. The spatial distance Z3 generated in the direction in which the workpiece assembly 1 is cut is the distance between the block-like workpieces 2B and 2C being cut by the workpiece cutting unit 10 and the workpiece receiving plate 80. The spatial distance Z3 is smaller than the height WT of the block workpiece. In addition, the space height Z4 in the direction in which the workpiece assembly 1 generated by moving the piece-like workpiece 2a onto the workpiece receiving plate 80 is cut is also smaller than the height WT of the block-like workpiece. The space height T4 is the drop height of the piece-like workpiece 2a. Thereby, the fall height of the piece-like workpiece 2a is regulated by the workpiece receiving plate 80 so as to be equal to or less than the individual height of the block-like workpieces 2A to 2L included in the workpiece assembly 1.

  The holding member 32 for clamping or the end surface of the block-shaped workpiece 2B is moved as a guide onto the workpiece receiving plate 80 by the weight of the piece-shaped workpiece 2a. While the piece-like workpiece 2a moves on the workpiece receiving plate 80, the upper and lower end surfaces are free, but the left and right and front and rear end surfaces are the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping plate. The holding member 32 for use, the piece-like work 2a are regulated by any one of the adjacent end face of the block-like work 2B that is not cut and the cut piece-like work. That is, in the cutting process, in a state where the piece-like workpiece 2a cut by the wire 11 of the workpiece cutting unit 10 is placed on the drop height regulating plate 80, one of the end faces of the piece-like workpiece 2a is a block-like workpiece 2A. In other words, it includes a state in contact with an end face of an uncut block-shaped work adjacent to the end face, for example, an end face of the block-shaped work 2B. For this reason, the posture of the falling piece-like work 2a is stabilized. Moreover, the possibility that the falling piece-like workpiece 2a affects the posture of the block-like workpiece 2B being cut is reduced. As a result, the possibility of momentary strong tension occurring in the wire 11 due to the posture of the falling piece-like workpiece 2a and the block-like workpieces 2B, 2C being cut is reduced. Since the wire 11 cuts the block-like workpieces 2B and 2C with a constant tension, the cutting accuracy of the block-like workpieces 2B and 2C is improved.

  Here, even if a time difference occurs in the cutting, the holding unit 61 can be held without changing the posture of the block-shaped workpieces 2B and 2C being cut in response to the change in the pressing force. The workpiece cutting device 100 cuts the workpiece until the extrusion pusher 40 reaches a predetermined extrusion amount for pushing out the workpiece assembly 1 (Step S4, No; Step S3).

  Next, when the extrusion pusher 40 has a predetermined extrusion amount that extrudes the workpiece assembly (step S4, Yes), the workpiece cutting device 100 stably stabilizes the one-stage block-shaped workpieces 2A and 2B as shown in FIG. 2C can be cut as piece-like works 2a, 2b, 2c. FIG. 9 shows a state where the one-stage piece-like workpieces 2a, 2b, and 2c are placed in a state of being aligned on the workpiece receiving plate 80.

  Next, the workpiece cutting device 100 carries out the workpiece (step S5). The work receiving plate 80 is pushed down by a lift mechanism or the like as shown in FIG. 10, and the piece-like works 2a, 2b, 2c can be taken out. When all the workpieces have not been cut (step S6, No), the workpiece cutting device 100 prepares a workpiece receiving plate 80 (step S7). Then, the workpiece cutting apparatus 100 performs workpiece cutting (step S3). When all the workpieces have been cut (step S6, Yes), the workpiece cutting device 100 ends the cutting process.

  As described above, the workpiece cutting method of the present embodiment prepares a workpiece assembly in which the end faces of a plurality of block-shaped workpieces are pressed against each other and prepares a workpiece assembly, and inputs the workpiece into the workpiece cutting device (step S2). And a cutting step (step S3) for extruding the workpiece while holding the workpiece against a workpiece cutting portion having a plurality of wires that simultaneously cut the workpiece into a plurality of piece-like workpieces. The position of the block-shaped workpiece cut by the section is adjusted.

  As a result, even when position variation may occur due to accumulation of dimensional variations of the block-shaped workpiece, a pressing force is applied to the block-shaped workpiece that is cut among the block-shaped workpieces constituting the workpiece. Can reduce partial variations. For this reason, the position variation of the block workpiece is partially corrected, and the accuracy of the position of the block workpiece relative to the workpiece cutting portion can also be improved. As a result, the workpiece can be positioned and fixed and cut without using an adhesive. And the position where a workpiece | work is fixed is stabilized, and the precision which a workpiece | work cutting device cut | disconnects a workpiece | work can be improved. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

(Embodiment 2)
FIG. 11 is a schematic diagram illustrating a positioning holding member according to the second embodiment. The positioning holding member according to the present embodiment is characterized in that a plurality of holding units 61 are arranged between the sliding units 51 and 51. In the following description, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted.

  As shown in FIG. 11, the positioning holding member 22 of the present embodiment includes sliding units 51, 51, a plurality of holding units 61, and a plurality of holding units 62 as viewed from the surface on the workpiece assembly 1 side. Contains. As shown in FIG. 11, the plurality of holding units 61 are arranged between the sliding units 51 and 51. The plurality of holding units 62 are disposed between the sliding units 51 and 51.

  The pressing portion 61 </ b> A of the holding unit 61 can press and hold the block-shaped workpiece on which the sliding surface 51 </ b> A of the sliding unit 51 does not come into contact due to dimensional variation or position variation of the block-shaped workpiece. The pressing portion 61 </ b> A of the holding unit 61 holds the block-shaped workpiece cut by the wire 11 or the block-shaped workpiece immediately before cutting. In the positioning holding member 22 of the present embodiment, since the plurality of holding units 61 are arranged side by side, the posture of the block-shaped workpiece can be corrected with high accuracy.

  In the positioning holding member 22 of the present embodiment, a plurality of holding units 62 are arranged side by side. In addition, since the pressing portion 61A and the pressing portion 62A are arranged differently in the direction in which the workpiece assembly 1 is cut, the pressing portion 62A is the pressing portion of the block-shaped workpieces constituting the workpiece assembly 1. 61A can be pressed against a block-shaped workpiece different from the block-shaped workpiece that can be pressed. As a result, even if a large number of block workpieces are stacked, a part of the load applied to the pressing portion 61A is held by the pressing portion 62A, and the load can be dispersed. For this reason, the possibility that the workpiece assembly 1 may fall off due to impact or the like can be reduced. Thereby, since the some holding | maintenance unit 62 is arrange | positioned side by side and there are several press parts 62A, the number which piles up a block-shaped workpiece | work can be increased.

  As described above, the positioning holding member 22 of the present embodiment has a plurality of pressing portions 61 </ b> A, and the plurality of pressing portions 61 </ b> A are sandwiched between the pair of sliding units 51 and 51. Thereby, the some press part can correct the position variation of a partial block-shaped workpiece. For example, a plurality of pressing portions 61A can be pressed in a row direction (a direction orthogonal to the direction in which the workpiece assembly 1 is cut) against one block-shaped workpiece, and the posture of the pressed block-shaped workpiece is corrected. Is done. As a result, it is possible to improve the correction accuracy of the position variation of the block workpiece.

(Embodiment 3)
FIG. 12 is a schematic diagram illustrating a positioning holding member according to the third embodiment. The positioning holding member according to this embodiment is characterized in that a plurality of holding units 60 and sliding units 51 are alternately arranged. In the following description, the same components as those described in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The positioning holding member 22 of the present embodiment includes a sliding unit 51, a plurality of holding units 61, and a plurality of holding units 62 as shown in FIG. 12 when viewed from the surface on the workpiece assembly 1 side. Yes. As shown in FIG. 12, the plurality of holding units 60 and the plurality of sliding units 51 are alternately arranged. The holding unit 61 and the holding unit 62 are disposed between the sliding units 51 and 51.

  The pressing portion 61 </ b> A of the holding unit 61 can press and hold the block-shaped workpiece on which the sliding surface 51 </ b> A of the sliding unit 51 does not come into contact due to dimensional variation or position variation of the block-shaped workpiece. The pressing portion 61 </ b> A of the holding unit 61 holds the block-shaped workpiece cut by the wire 11 or the block-shaped workpiece immediately before cutting. In the positioning holding member 22 of the present embodiment, since the plurality of holding units 61 are arranged side by side via the sliding unit 51, the posture of the block-shaped workpiece can be corrected with high accuracy.

  In the positioning holding member 22 of the present embodiment, a plurality of holding units 62 are arranged side by side through the sliding unit 51. In addition, since the pressing portion 61A and the pressing portion 62A are arranged differently in the direction in which the workpiece assembly 1 is cut, the pressing portion 62A is the pressing portion of the block-shaped workpieces constituting the workpiece assembly 1. 61A can be pressed against a block-shaped workpiece different from the block-shaped workpiece that can be pressed. As a result, even if a large number of block workpieces are stacked, a part of the load applied to the pressing portion 61A is held by the pressing portion 62A, and the load can be dispersed. For this reason, the possibility that the workpiece assembly 1 may fall off due to impact or the like can be reduced. Thereby, the plurality of holding units 62 are arranged side by side through the sliding unit 51, and the plurality of pressing portions 62A are provided, so that the number of stacked block-shaped workpieces can be increased.

  As described above, in the positioning holding member 22, it is preferable that the pressing portions 61A and the sliding units 51 are alternately arranged. While the sliding unit 51 guides the postures of the plurality of block-like workpieces pushed out by the pushing means, the pressing portions on both sides of the sliding unit 51 can correct the posture of the block-like workpiece. Thereby, the some press part can correct the position variation of a partial block-shaped workpiece. As a result, it is possible to improve the correction accuracy of the position variation of the block workpiece.

(Embodiment 4)
FIG. 13 is a schematic diagram illustrating a positioning holding member according to the fourth embodiment. The positioning holding member 22 according to this embodiment has a plurality of holding units 60 but is characterized in that the sliding unit 51 is omitted. In the following description, the same components as those described in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The positioning holding member 22 of the present embodiment includes a plurality of holding units 61 and a plurality of holding units 62 as shown in FIG. 13 when viewed from the surface on the workpiece assembly 1 side. As shown in FIG. 13, the holding units 60 are arranged side by side at a predetermined interval. In addition, since the pressing portion 61A and the pressing portion 62A are arranged differently in the direction in which the workpiece assembly 1 is cut, the pressing portion 62A is the pressing portion of the block-shaped workpieces constituting the workpiece assembly 1. 61A can be pressed against a block-shaped workpiece different from the block-shaped workpiece that can be pressed. As a result, even if a large number of block workpieces are stacked, a part of the load applied to the pressing portion 61A is held by the pressing portion 62A, and the load can be dispersed. For this reason, the possibility that the workpiece assembly 1 may fall off due to impact or the like can be reduced. Thereby, the plurality of holding units 62 are arranged side by side through the sliding unit 51, and the plurality of pressing portions 62A are provided, so that the number of stacked block-shaped workpieces can be increased. Further, the positioning holding member 22 of the present embodiment has a plurality of holding units 60, but the sliding unit 51 is omitted. For this reason, since the predetermined interval between the holding units 60 is reduced, it is possible to cope with a small block-shaped workpiece. Further, the predetermined intervals between the holding units 60 may be eliminated, and the holding units 60 may be arranged so as to be continuously arranged.

  The holding member 32 for clamping can have the same configuration as that of the positioning holding member 22 of the present embodiment. For example, as shown in FIG. 13, a plurality of holding units 60 are provided, but the sliding unit 51 is omitted. For this reason, the block 11 can be held by the holding unit 60 by passing the wire 11 indicated by a broken line at a predetermined interval between the holding units 60. Each pressed part 61A can hold each cut piece-like workpiece.

  As described above, in the positioning holding member 22, the holding units 60 are arranged side by side at a predetermined interval. It is preferable that a plurality of pressing portions 61A are arranged side by side at a predetermined interval. Thereby, the some press part can correct the position variation of a partial block-shaped workpiece. As a result, it is possible to improve the correction accuracy of the position variation of the block-shaped workpiece.

(Modification)
FIG. 14 is a perspective view showing a specific configuration of the workpiece cutting device. In the workpiece cutting apparatus 100 according to the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment described above, the positioning reference plate 21 and the sandwiching reference plate 31 are arranged on one side with the positioning reference surface 21a and the sandwiching reference surface 31a. It is said. FIG. 15 is a perspective view showing a specific configuration of a workpiece cutting device according to a modification. In the workpiece cutting device 101 in FIG. 15, the positioning reference plate 21 and the clamping reference plate 31 have a positioning reference surface 21a and a clamping reference surface 31a on both sides. For example, a cross-shaped partition plate 90 is provided, and the partition plate 90 is used as the positioning reference plate 21 and the clamping reference plate 31, and the work storage portions for four places are provided, thereby storing the work aggregate 1. Can be increased. The pusher pusher 40 has push parts 40a to 40d for each work storage part. FIG. 16 is a schematic diagram showing a modification of the work assembly 1. The workpiece assembly 1 is not limited to a block-shaped workpiece having a rectangular parallelepiped shape. For example, a tile-shaped workpiece 300 as illustrated in FIG. 16 may be stacked in multiple stages. The present invention can be applied in the same manner as long as it is formed to have a length that is an integral multiple of the thickness required for the cut piece-shaped workpiece and the end faces at both ends thereof are parallel in a vertical state.

  The positioning holding member 22 of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment described above is any one of the positioning holding member 22 of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment. Can be used in combination.

DESCRIPTION OF SYMBOLS 1 Work assembly 2, 2A-2L, 201-208, 211-218, 221-228 Block-shaped work 2a, 2b, 2c Single-piece work 10 Work cutting part 11 Wire 12a, 12b Guide roller 21 Positioning reference plate 21a Positioning Reference surface 22 Positioning holding member 31 Holding reference plate 31a Holding reference surface 32 Holding member 40 Pushing pusher 60, 61, 62 Holding unit 61A Pressing portion 62A Pressing portion (second pressing portion)
70 Pressing means

Claims (7)

A workpiece cutting unit having a plurality of wires that simultaneously cut a plurality of block-shaped workpieces into a plurality of piece-shaped workpieces by pressing the end faces of a plurality of block-shaped workpieces together;
A positioning reference plate having a positioning reference surface parallel to the wire cutting surface of the workpiece cutting portion and set in a positional relationship with the wire, and the positioning in a state in which the workpiece is pressed against the positioning reference surface A positioning member for positioning the workpiece so as not to deviate in a direction perpendicular to the reference plane, and a workpiece positioning body having
A workpiece clamping body that is positioned by the workpiece positioning body and clamps both ends of the workpiece positioned in the wire longitudinal direction;
Extrusion means for extruding the workpiece against the workpiece cutting section fixed in position,
The positioning holding member includes a pressing portion that can be pressed against the block-shaped workpiece cut by the workpiece cutting portion, and a slide that slidably positions the workpiece by pressing and contacting the positioning reference surface. A workpiece cutting device , wherein the pressing portion is sandwiched between the sliding units . 2. The workpiece cutting apparatus according to claim 1 , wherein the positioning holding member includes a plurality of pressing portions, and the plurality of pressing portions are sandwiched between a pair of the sliding units. The positioning holding member, the work cutting apparatus according to claim 1 or 2, wherein the sliding unit and the pressing portion are alternately arranged. The workpiece according to any one of claims 1 to 3 , wherein a length of the pressing portion in a direction in which the workpiece is cut is set shorter than a length of the block-shaped workpiece in a direction in which the workpiece is cut. Cutting device. The positioning holding member 4 from claim 1 having a second pressing portion capable pressing the pressing portion against the pressable block-shaped workpieces with different block-shaped workpieces out of the block-shaped workpieces constituting the workpiece The workpiece cutting device according to any one of the above. The workpiece cutting device according to claim 5 , wherein a length of the second pressing portion in a direction in which the workpiece is cut is set shorter than a length of the block-shaped workpiece in a direction in which the workpiece is cut. Preparing a workpiece as an assembly in which the end surfaces of a plurality of block-shaped workpieces are pressed against each other and preparing the workpiece, and feeding the workpiece into the workpiece cutting device according to any one of claims 1 to 6 ,
A cutting step of extruding the workpiece in a state where the workpiece is held, with respect to a workpiece cutting portion having a plurality of wires that simultaneously cut the workpiece into a plurality of piece-like workpieces,
A work cutting method, wherein a position of a block-shaped work to be cut by the work cutting unit is adjusted.

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