JP2009269379A - Lumber cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lumber cutting device for easily performing the chamfer processing of an edge of a lumber cutting plane. <P>SOLUTION: A lumber cutting device 100 for cutting a lumber 500 to be processed by a circular saw 31 attached to a rotating circular saw shaft 3. The chamfering of the upper edge is performed by abutting a rotating upper chamfering cutter 11 along the cutting section on an upper plane of the lumber 500 cut by the circular saw 31 thereby forming a V-shape cross-sectional concave groove X, and chamfering an upper edge of a plane cut by the circular saw 31 an upper chamfering shaft 1. The chamfering of the lower edge is performed by abutting a rotating lower chamfering cutter 21 along the cutting section on a lower plane of the lumber 500 cut by the circular saw 31 thereby forming a V-shape cross-sectional concave groove Y, and chamfering a lower edge of the plane cut by the circular saw 31 with a lower chamfering shaft 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wood cutting apparatus for cutting a workpiece wood by a circular saw attached to a rotating circular saw shaft.

  Conventionally, as a device for cutting wood, a wood cutting device that rotates and cuts a circular saw is used. FIG. 13 is a side view showing an outline of a wood cutting apparatus 400 according to a conventional example, and FIG. 14 is a plan view showing an outline of the wood cutting apparatus 400.

  As shown in FIGS. 13 and 14, the wood cutting device 400 mainly includes a lower rod shaft 40, an upper rod shaft 50, a circular saw shaft 60, and a frame 70. The wood 500 is processed on the frame 70 while being fed from the right to the left in FIGS. 13 and 14 by a plurality of feed rollers (not shown). A plurality of scissors blades are fixed to the body portions of the lower scissors shaft 40 and the upper scissors shaft 50, and the lower surface and the upper surface of the wood 500 are cut while rotating respectively. The wood 500 having the lower surface and the upper surface cut is sent to the position of the circular saw shaft 60 and cut by the rotating circular saw. In general, a plurality of circular saws are attached in parallel as shown in the conventional example so that a plurality of cuts can be made at a time.

  The cut wood may be used as a building material or the like as it is, but when it is used as a base material for a flooring, for example, it is required to make the cut surface smooth. Therefore, chamfering is performed on the corners of the cut surface. This chamfering process is performed manually or by machining each piece of wood after cutting.

On the other hand, as a technique related to the chamfering processing of wood, Patent Document 1 discloses that the circular saw blade 11 to which the cutting blade 27 and the chamfering blade 30 are attached forms a “tenon” with the cutting blade 27, while the chamfering blade 30 “ An invention in which the tip of a tenon is chamfered is described.
Patent Document 2 discloses that the rotary cutting drum 10 to which the cutting blade 14 and the crease cutter 19 are attached forms a cut groove with the cutting blade 14 and prevents the crease cutter 19 from damage around the groove. The invention described above is described.
Moreover, in patent document 3, before cutting the flooring 1, the groove | channel 4 is formed in the surface of the flooring 1 with the protrusion 2a of the metal mold | die 2, and the chamfering part 4a is cut | disconnected by cut | disconnecting after that. The invention to be formed is described.
JP-A-11-99504 JP 2004-299211 A JP 2001-260107 A

However, in the case of chamfering the corners of the cut surface of the wood, the conventional method for each piece of wood after cutting has the following problems.
First, when the wood is cut, the warping starts from that moment. Therefore, at the stage of chamfering, warping has already occurred in the wood, and it has been necessary to chamfer while pressing the wood and correcting the corners to be chamfered straight.
Moreover, since the cutting process and the chamfering process are separated, a large number of processes are required.

On the other hand, the inventions described in Patent Document 1 and Patent Document 2 are used for processing of a limited portion of formation of “tenon” and “cut groove”, and the present invention has a problem of cutting wood. It cannot be applied to the chamfering of the corner of the cut surface.
In addition, the invention described in Patent Document 3 is to form a chamfered portion by pressing and deforming a floor material in which a cork layer is laminated on an upper layer by sandwiching it with a mold. It cannot be applied to chamfering of the corner of the cut surface.

  This invention solves the said conventional subject, and provides the wood cutting device which can perform the chamfering process of the corner | angular part of the cut surface of wood easily.

  A wood cutting device according to a first aspect of the present invention is a wood cutting device for cutting a workpiece wood by a circular saw attached to a rotating circular saw shaft, and cutting by the circular saw on the upper surface of the workpiece wood. A rotating top chamfering cutter is brought into contact with the surface to form a concave groove having a V-shaped cross section, a top chamfering shaft that chamfers the upper corner of the cut surface by the circular saw, and the wood to be processed A bottom surface chamfering the lower corner of the cut surface by the circular saw by forming a concave groove having a V-shaped cross section by contacting a rotating bottom surface cutting cutter along the cut portion by the circular saw on the bottom surface And a shaft.

  A wood cutting device according to a second aspect of the present invention is a wood cutting device for cutting a workpiece wood with a circular saw attached to a rotating circular saw shaft, and cutting with the circular saw on the lower surface of the workpiece wood. A rotating chamfering cutter is brought into contact with the rotary chamfer along the portion to form a concave groove having a V-shaped cross section, and has a chamfering shaft that chamfers the lower corner of the cut surface by the circular saw. To do.

  A wood cutting device according to a third aspect of the present invention is a wood cutting device for cutting a workpiece wood with a circular saw attached to a rotating circular saw shaft, and cutting with the circular saw on the upper surface of the workpiece wood. A rotating top chamfering cutter is brought into contact with each other to form a concave groove having a V-shaped cross section, and has a top chamfering shaft that chamfers the upper corner of the cut surface by the circular saw. .

  According to a fourth aspect of the present invention, in the wood cutting apparatus according to the first or second aspect, the bottom chamfering cutter is formed of two left and right members divided in the axial direction of the bottom chamfering shaft, and the round The saw is fixed so as to be sandwiched from the left and right, and the bottom chamfering shaft and the circular saw shaft are rotated by the same shaft, and the chamfering by the bottom chamfering cutter and the cutting by the circular saw are performed simultaneously. To do.

  According to a fifth aspect of the present invention, in the wood cutting apparatus according to the first or third aspect, the top chamfering cutter is formed of two left and right members divided in the axial direction of the top chamfering shaft, and the round The saw is fixed so as to sandwich the saw from the left and right, and the top chamfering shaft and the circular saw shaft are rotated by the same shaft, and the chamfering by the top chamfering cutter and the cutting by the circular saw are performed simultaneously. To do.

  The invention according to claim 6 is the wood cutting apparatus according to any one of claims 1 to 5, wherein at least one of the upper surface of the processed wood and the lower surface of the processed wood is cut. It has a shaft.

  According to the first aspect of the present invention, the rotating top chamfering cutter abuts along the cutting site by the circular saw on the top surface of the processed wood and forms a concave groove having a V-shaped cross section. The concave groove becomes a chamfered portion at the upper corner of the cut surface by the circular saw. Moreover, since the rotating bottom chamfering cutter abuts along the cutting portion by the circular saw on the lower surface of the wood to be processed and forms a concave groove having a V-shaped cross section, the formed concave groove is a cutting surface by the circular saw. It becomes a chamfered portion of the lower corner of the. Thus, chamfering of the upper and lower corners of the cut surface by a circular saw can be easily performed.

  According to the second aspect of the present invention, the rotating bottom chamfering cutter abuts along the cut portion by the circular saw on the lower surface of the work piece to form a concave groove having a V-shaped cross section. The concave groove becomes a chamfered portion of the lower corner of the cut surface by the circular saw. In this way, it is possible to easily chamfer the lower corner of the cut surface with a circular saw.

  According to the third aspect of the present invention, the rotating top chamfering cutter abuts along the cutting portion by the circular saw on the upper surface of the processed wood and forms a concave groove having a V-shaped cross section. The concave groove becomes a chamfered portion at the upper corner of the cut surface by the circular saw. Thus, the chamfering process of the upper corner portion of the cut surface by the circular saw can be easily performed.

  In a fourth aspect of the invention, the bottom chamfering cutter is formed of two left and right members divided in the axial direction of the bottom chamfering shaft, and is fixed so as to sandwich the circular saw from the left and right. Then, the bottom chamfering shaft and the circular saw shaft rotate on the same axis. Accordingly, the lower corner portion is chamfered by the rotation of the bottom chamfering cutter, and at the same time, the cutting by the rotation of the circular saw is performed. Thereby, since the number of rotating shafts decreases, the total length of the apparatus can be shortened. Moreover, since it processes simultaneously, the processing precision of a cut surface and a chamfering part can be raised.

  In the invention described in claim 5, the top chamfering cutter is formed of two left and right members divided in the axial direction of the top chamfering shaft, and is fixed so as to sandwich the circular saw from the left and right. Then, the top chamfering shaft and the circular saw shaft rotate on the same axis. Therefore, the upper corner is chamfered by the rotation of the top chamfering cutter, and at the same time, the cutting by the rotation of the circular saw is performed. Thereby, since the number of rotating shafts decreases, the total length of the apparatus can be shortened. Moreover, since it processes simultaneously, the processing precision of a cut surface and a chamfering part can be raised.

  In the invention according to claim 6, a saddle shaft for cutting at least one of the upper surface of the workpiece wood and the lower surface of the workpiece wood is provided. Therefore, the unevenness of the wood to be processed can be eliminated, and the chamfering processing accuracy can be increased.

  As mentioned above, according to this invention, the chamfering process of the corner | angular part of the cut surface of wood can be performed easily.

  Next, with reference to FIG. 1 thru | or FIG. 10, the wood cutting device which concerns on Embodiment 1 of this invention is demonstrated. First, with reference to FIG. 1 thru | or FIG. 6, the structure of the wood cutting device 100 which concerns on Embodiment 1 is demonstrated. FIG. 1 is a side view showing an outline of a wood cutting device 100 according to the first embodiment, and FIG. 2 is a plan view showing an outline of the wood cutting device 100.

  As shown in FIGS. 1 and 2, the wood cutting device 100 mainly includes a top chamfering shaft 1, a bottom chamfering shaft 2, a circular saw shaft 3, a lower rod shaft 40, an upper rod shaft 50, and a frame 70. The wood 500 is processed on the frame 70 while being fed from the right to the left in FIGS. 1 and 2 by a plurality of feed rollers (not shown). In addition, the top and bottom chamfering shafts 1 and 2, the circular saw shaft 3, the lower rod shaft 40, and the upper rod shaft 50 can be adjusted in the vertical direction.

  The upper chamfering shaft 1 is configured to form a concave groove X having a V-shaped cross section along a cutting portion by a circular saw on the upper surface of the wood 500 while rotating. Further, the lower surface chamfering shaft 2 is configured to form a concave groove Y having a V-shaped cross section along a cutting portion by a circular saw on the lower surface of the wood 500 while rotating. The circular saw shaft 3 is configured to cut the wood 500 into a predetermined width while rotating.

  Further, a plurality of scissors blades are fixed to the body portions of the lower scissor shaft 40 and the upper scissor shaft 50, and the lower surface and the upper surface of the wood 500 are cut while rotating respectively. Note that the lower heel shaft 40 and the lower heel shaft 50 are not necessarily required, and it is also possible to use wood that has been cut in advance. Further, any one of the lower eyelid shaft 40 and the lower eyelid shaft 50 may be provided.

Next, with reference to FIG.3 and FIG.4, the top surface taking shaft 1 is demonstrated in detail. FIG. 3 is a perspective view showing the top chamfered shaft 1, and FIG. 4 is a cross-sectional view showing the tip portion of the top chamfered shaft 1.
As shown in FIG. 3, the top chamfering shaft 1 is composed of a body portion 10 and four top surface cutting cutters 11 fixed around the body portion 10. And the top surface removal cutter 11 rotates by rotating the trunk | drum 10 with motive power, such as a motor. Note that the number of the top-cutting cutters 11 can be appropriately determined according to how many pieces of the wood 500 are cut.

  As shown in FIG. 4, a sharpened blade edge 12 is attached to the tip of the top surface cutter 11, and the blade edge 12 of the top surface cutter 11 contacts the top surface of the wood 500 while rotating. Then, a concave groove X having a V-shaped cross section is formed.

Next, the bottom chamfering shaft 2 and the circular saw shaft 3 will be described with reference to FIGS. In the present embodiment, the bottom chamfering shaft 2 and the circular saw shaft 3 are configured to rotate integrally by the same shaft. FIG. 5 is a perspective view showing the bottom chamfering shaft 2 and the circular saw shaft 3, and FIG. 6 is a cross-sectional view showing tip portions of the bottom chamfering shaft 2 and the circular saw shaft 3.
As shown in FIG. 5, the bottom chamfering shaft 2 and the circular saw shaft 3 are composed of a common barrel portion 20, 30, and four bottom chamfering cutters 21 and four pieces fixed around the barrel portion 20, 30. It consists of a circular saw 31. And the bottom face cutter 21 and the circular saw 31 rotate by rotating the trunk | drum 20 and 30 with motive power, such as a motor. Note that the number of the bottom surface cutter 21 and the circular saw 31 can be appropriately determined according to how many pieces of the wood 500 are cut.

  As shown in FIG. 6, the bottom chamfering cutter 21 is divided into left and right parts along the axial direction of the bottom chamfering shaft 2 (Z direction in FIG. 6). The divided two left and right members are fixed by a plurality of screws 80 so as to sandwich the circular saw 31 from the left and right. Further, pointed cutting edges 22 and 22 are attached to the tip portions of the two left and right members of the bottom chamfering cutter 21, and a cutting edge 32 is attached to the tip portion of the circular saw 31. Then, the cutting edge 22 of the lower surface cutting cutter 21 rotates while coming into contact with the lower surface of the wood 500 to form a concave groove Y having a V-shaped cross section, and at the same time, the cutting edge 32 of the circular saw 31 is rotated while rotating the wood 500. It is designed to cut.

  Next, with reference to FIG. 7 thru | or FIG. 10, the process by the wood cutting device 100 which concerns on Embodiment 1 is demonstrated. FIG. 7 is a perspective view showing a processing state of the wood cutting device 100, and FIG. 8 is a cross-sectional view showing the wood after being cut by the wood cutting device 100. FIG. 9 is a cross-sectional view showing a machining state by the top chamfering shaft 1, and FIG. 10 is a cross-sectional view showing a machining state by the bottom chamfering shaft 2 and the circular saw shaft 3. In FIG. 7, the description of the front side portion and the rear side portion of the wood 500 is omitted for the sake of explanation.

  When the wood 500 cut by the lower heel shaft 40 and the upper heel shaft 50 is fed in the direction of the arrow as shown in FIG. 7, first, a concave groove having a V-shaped cross section is formed on the upper surface of the wood 500 by the upper surface shaft 1. X is formed. At this time, as shown in the cross-sectional view of FIG. 9, the cutting edge 12 of the top chamfering cutter 11 of the top chamfering shaft 1 contacts and cuts the top surface of the wood 500 while rotating. Thereby, the slopes on both sides of the cutting edge 12 form chamfered portions on both sides of the cut surface of the wood 500, and the upper corners of the cut surface by the circular saw 31 can be chamfered.

  Next, a concave groove Y having a V-shaped cross section is formed on the lower surface of the wood 500 by the lower surface taking shaft 2, and at the same time, the wood 500 is cut by the circular saw shaft 3. At this time, as shown in the cross-sectional view of FIG. 10, the cutting edge 22 of the bottom chamfering cutter 21 of the bottom chamfering shaft 2 contacts and cuts the bottom surface of the wood 500 while rotating. Thereby, the slopes on both sides of the cutting edge 22 form chamfered portions on both sides of the cut surface of the wood 500, and the lower corners of the cut surface by the circular saw 31 can be chamfered.

Here, the concave groove X is formed along a cutting site by the circular saw 31. More specifically, the cut surface of the circular saw 31 coincides with the deepest portion in the V-shaped cross section of the groove X. Similarly, the concave groove Y is also formed along the cut surface by the circular saw 31, and the cut surface of the circular saw 31 coincides with the deepest portion in the V-shaped cross section of the concave groove Y. Therefore, “the deepest portion of the groove X”, “the deepest portion of the groove Y”, and “the cut surface of the circular saw 31” are located on the same vertical line. In this way, the cut wood 501, 502, and 503 are processed as shown in FIG. 8, and the upper and lower corners of the cut surfaces of the cut wood 501, 502, and 503 are chamfered.
In addition, by adjusting the vertical position of the top chamfering shaft 1 and the bottom chamfering shaft 2, the depth of the concave groove X and the concave groove Y can be changed, and the size of the chamfered portion can be changed.

  According to the wood cutting apparatus 100 according to the first embodiment, the rotating top-cutting cutter 11 abuts along the cutting site by the circular saw 31 on the top surface of the wood to be processed 500 to form the concave groove X having a V-shaped cross section. Therefore, the formed concave groove X becomes a chamfered portion at the upper corner of the cut surface by the circular saw 31. Moreover, since the rotating lower surface cutting cutter 21 abuts along the cutting part by the circular saw 31 on the lower surface of the wood 500 to be processed and forms the concave groove Y having a V-shaped cross section, the formed concave groove Y is It becomes a chamfered portion at the lower corner of the cut surface by the circular saw 31. Thus, the chamfering process of the upper and lower corners of the cut surface by the circular saw 31 can be easily performed.

  Further, the bottom chamfering cutter 21 is formed of two left and right members divided in the axial direction of the bottom chamfering shaft 2, and is fixed so as to sandwich the circular saw 31 from the left and right. The bottom chamfering shaft 2 and the circular saw shaft 3 are rotated by the same axis. Therefore, the lower corner portion is chamfered by the rotation of the bottom chamfering cutter 21, and at the same time, the cutting by the rotation of the circular saw 31 is performed. Thereby, since the number of rotating shafts decreases, the total length of the apparatus can be shortened. Moreover, since it processes simultaneously, the processing precision of a cut surface and a chamfering part can be raised.

  Further, an upper rod shaft 40 and a lower rod shaft 50 for cutting the upper surface of the workpiece wood 500 and the lower surface of the workpiece wood 500 are provided. Therefore, the unevenness of the workpiece wood 500 can be eliminated and the chamfering processing accuracy can be increased.

Next, a wood cutting device according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 11 is a side view illustrating an outline of the wood cutting device 200 according to the second embodiment.
As shown in FIG. 11, the wood cutting device 200 mainly includes a bottom chamfering shaft 4, a top chamfering shaft 5, a circular saw shaft 6, a lower rod shaft 40, an upper rod shaft 50, and a frame 70. In addition, the same code | symbol is attached | subjected to the part same as Embodiment 1, and description is abbreviate | omitted.

  The wood cutting device 200 according to the second embodiment has substantially the same configuration as the wood cutting device 100 according to the first embodiment shown in FIG. 1, but the circular saw shaft 6 is disposed on the upper side, and the top chamfering shaft 5 and the round cutting shaft 200 are rounded. The difference is that the saw shaft 6 is rotated by the same shaft. Therefore, similarly to the relationship between the bottom chamfering shaft 2 and the circular saw shaft 3 in the first embodiment, in the second embodiment, the top chamfering cutter of the top chamfering shaft 5 is divided into the left and right sides divided in the axial direction of the top chamfering shaft 5. It is formed of two members, and is fixed so as to sandwich the circular saw of the circular saw shaft 6 from the left and right.

  According to the wood cutting apparatus 200 according to the second embodiment, the rotating bottom chamfering cutter abuts along the cutting site by the circular saw on the lower surface of the processed wood 500 and forms a groove having a V-shaped cross section. The formed concave groove becomes a chamfered portion at the lower corner of the cut surface by the circular saw. In addition, the rotating top-cutting cutter abuts along the cutting portion by the circular saw on the top surface of the wood to be processed 500 to form a concave groove having a V-shaped cross section, so that the formed concave groove is cut by the circular saw. It becomes a chamfered portion at the upper corner of the surface. Thus, chamfering of the upper and lower corners of the cut surface by a circular saw can be easily performed.

  Further, the top chamfering cutter is formed of two left and right members divided in the axial direction of the top chamfering shaft 5, and is fixed so as to sandwich the circular saw from the left and right. Then, the top chamfering shaft 5 and the circular saw shaft 6 rotate on the same axis. Therefore, the upper corner is chamfered by the rotation of the top chamfering cutter, and at the same time, the cutting by the rotation of the circular saw is performed. Thereby, since the number of rotating shafts decreases, the total length of the apparatus can be shortened. Moreover, since it processes simultaneously, the processing precision of a cut surface and a chamfering part can be raised.

Next, a wood cutting device according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 12 is a side view illustrating an outline of a wood cutting device 300 according to the third embodiment.
As shown in FIG. 12, the wood cutting apparatus 300 mainly includes a top chamfer 7, a bottom chamfer 8, a circular saw shaft 9, a lower rod shaft 40, an upper rod shaft 50, and a frame 70. In addition, the same code | symbol is attached | subjected to the part same as Embodiment 1, and description is abbreviate | omitted.

  The wood cutting device 300 according to the third embodiment has substantially the same configuration as the wood cutting device 100 according to the first embodiment shown in FIG. 1, but rotates the bottom chamfering shaft 8 and the circular saw shaft 9 by separate shafts. It is different in that it is made to let you. Therefore, the top chamfer 7 and the bottom chamfer 8 have the same shape. Then, the lower chamfering process and the cutting of the wood 500 are performed separately. In FIG. 12, the circular saw shaft 9 is arranged on the lower side, but it may be arranged on the upper side.

  According to the wood cutting device 300 according to the third embodiment, the rotating bottom chamfering cutter abuts along the cutting portion by the circular saw on the lower surface of the processed wood 500 and forms a groove having a V-shaped cross section. The formed concave groove becomes a chamfered portion at the lower corner of the cut surface by the circular saw. In addition, the rotating top-cutting cutter abuts along the cutting portion by the circular saw on the top surface of the wood to be processed 500 to form a concave groove having a V-shaped cross section, so that the formed concave groove is cut by the circular saw. It becomes a chamfered portion at the upper corner of the surface. Thus, chamfering of the upper and lower corners of the cut surface by a circular saw can be easily performed.

As described above, the wood cutting device according to the embodiment of the present invention has been described. However, in the case where chamfering of the workpiece wood is required only on either the upper side or the lower side of the cut surface, the configuration of only the top chamfering cutter or It is also possible to adopt a configuration with only a bottom chamfering cutter.
For example, in the case of having only the top chamfering cutter, the rotating top chamfering cutter abuts along the cutting site by the circular saw on the top surface of the processed wood and forms a concave groove having a V-shaped cross section. The concave groove becomes a chamfered portion at the upper corner portion of the cut surface by the circular saw, and the chamfering processing at the upper corner portion of the cut surface by the circular saw can be easily performed.
Similarly, in the case of having only a bottom chamfering cutter, the rotating bottom chamfering cutter abuts along the cut portion by the circular saw on the lower surface of the workpiece to form a concave groove having a V-shaped cross section. The recessed groove thus formed becomes a chamfered portion at the lower corner of the cut surface by the circular saw, and the lower corner of the cut surface by the circular saw can be easily chamfered.

  Moreover, in the said embodiment, although the circular saw shaft was arrange | positioned in the most downstream of an apparatus, it is good also as a structure which arrange | positions a circular saw shaft in an upstream and performs chamfering after the cutting | disconnection by a circular saw.

  As mentioned above, according to the wood cutting device which concerns on the said embodiment, the chamfering process of the corner | angular part of the cut surface of wood can be performed easily.

It is a side view which shows the outline | summary of the wood cutting device which concerns on Embodiment 1. FIG. It is a top view which shows the outline | summary of the wood cutting device which concerns on Embodiment 1. FIG. It is a perspective view which shows an upper surface chamfering shaft. It is sectional drawing which shows the front-end | tip part of a top chamfering shaft. It is a perspective view which shows a lower surface chamfering shaft and a circular saw shaft. It is sectional drawing which shows the front-end | tip part of a lower surface chamfering shaft and a circular saw shaft. It is a perspective view which shows the processing state of a wood cutting device. It is sectional drawing which shows the timber after a cutting | disconnection with a timber cutting device. It is sectional drawing which shows the processing state by a top chamfering shaft. It is sectional drawing which shows the processing state by a bottom chamfering shaft and a circular saw shaft. It is a side view which shows the outline | summary of the wood cutting device which concerns on Embodiment 2. FIG. It is a side view which shows the outline | summary of the wood cutting device which concerns on Embodiment 3. FIG. It is a side view which shows the outline | summary of the wood cutting device which concerns on a prior art example. It is a top view which shows the outline | summary of the wood cutting device which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top surface chamfer 2 Bottom surface chamfer 3 Circular saw shaft 4 Bottom surface shaft 5 Top surface shaft 6 Round saw shaft 7 Top surface shaft 8 Bottom surface shaft 9 Circular saw shaft 10 Body 11 Top surface cutter 12 Cutting edge 20 Body 21 Bottom surface Cutting cutter 22 Cutting edge 30 Body 31 Circular saw 32 Cutting edge 40 Lower rod shaft 50 Upper rod shaft 60 Circular saw shaft 70 Frame 80 Screw 100 Wood cutting device 200 Wood cutting device 300 Wood cutting device 400 Wood cutting device 500 Wood 501 Wood after cutting 502 Wood after cutting 503 Wood after cutting X groove D groove Y

Claims (6)

A wood cutting device for cutting a workpiece wood by a circular saw attached to a rotating circular saw shaft,
A rotating top chamfering cutter is brought into contact with a cutting portion of the upper surface of the workpiece wood by the circular saw to form a V-shaped concave groove, and an upper corner portion of the cutting surface by the circular saw is formed. A top chamfer shaft to be chamfered;
A rotating bottom chamfering cutter is brought into contact with the cutting surface by the circular saw on the lower surface of the wood to be processed to form a concave groove having a V-shaped cross section, and the lower corner of the cutting surface by the circular saw A wood cutting device comprising a bottom chamfering shaft for chamfering the steel. A wood cutting device for cutting a workpiece wood by a circular saw attached to a rotating circular saw shaft,
A rotating bottom chamfering cutter is brought into contact with the cutting surface by the circular saw on the lower surface of the wood to be processed to form a concave groove having a V-shaped cross section, and the lower corner of the cutting surface by the circular saw A wood cutting device having a bottom chamfering shaft for chamfering. A wood cutting device for cutting a workpiece wood by a circular saw attached to a rotating circular saw shaft,
A rotating top chamfering cutter is brought into contact with a cutting portion of the upper surface of the workpiece wood by the circular saw to form a V-shaped concave groove, and an upper corner portion of the cutting surface by the circular saw is formed. A wood cutting device comprising a chamfering shaft for chamfering. The bottom chamfering cutter is formed from two left and right members divided in the axial direction of the bottom chamfering shaft, and is fixed so as to sandwich the circular saw from the left and right,
The wood according to claim 1 or 2, wherein the chamfering by the chamfering cutter and the cutting by the circular saw are simultaneously performed by rotating the chamfering shaft and the circular saw shaft by the same axis. Cutting device. The top chamfering cutter is formed of two left and right members divided in the axial direction of the top chamfering shaft, and is fixed so as to sandwich the circular saw from the left and right,
The wood according to claim 1 or 3, wherein the chamfering by the top chamfering cutter and the cutting by the circular saw are simultaneously performed by rotating the top chamfering shaft and the circular saw shaft by the same axis. Cutting device. The wood cutting apparatus according to any one of claims 1 to 5, further comprising a saddle shaft that cuts at least one of an upper surface of the workpiece wood and a lower surface of the workpiece wood.

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