JP3109178U - Angle adjustable saw blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a saw blade for wood capable of adjusting an angle by attaching a circular saw machine having different specifications to the saw blade to cope with different thicknesses of wood.
An adjustment member 2 and a measurement member 3 are provided on a table surface 11 of a saw table 1. The guide surface 11 is provided with a guide groove, a positioning hole and a guide rail groove 14 are provided on both sides, and two pairs of connection blocks 2B of the adjusting member 2 are positioned. The adjustment member 2 includes a set of long rails 2A and two pairs of connection blocks 2B. The measuring member 3 includes a rotating arm 3 </ b> A having a rapid disassembly hole and a tooth set, and the rapid disassembly hole faces an arcuate hole 16 provided in the base surface 11. In the vicinity of the arc-shaped hole 16, there is a dimension mark 17 for adjusting the angle of the rotating arm 3A. A circular saw machine having different specifications can be attached to the saw blade by the adjusting member 2 to cut wood having different widths and thicknesses, and the measuring member 3 measures an angle with respect to the wood.
[Selection] Figure 1A

Description

  The present invention relates to a saw blade for wood whose angle can be adjusted.

  At present, the most important tool in exterior construction is a saw blade for wood to be installed on the site, and the wood saw blade cuts various sizes of wood necessary for exterior construction. The conventional saw blade for wood is constructed by assembling two horizontal plates and two vertical plates, and a fitting groove is provided on it, and one base surface is fixed on the fitting groove to become a saw blade. A single circular saw machine is fixed under the base.

  The above-mentioned fitting type wood saw table has a fitting groove on it, and one base surface is fixed on the fitting groove to form a saw base, and one circular saw machine is below the base surface. Is fixed. In actual exterior construction, when cutting timber of each size, the necessary size of the timber is measured by man-made or the geometric angle is calculated, then the mark is attached to the timber and the timber is placed on the saw blade. Cut the wood along the mark made by.

  However, since the conventional saw blade for wood does not include any measurement tool, it is inevitable that the above operation is performed by a person. This is extremely inconvenient, has low accuracy, and the work efficiency of exterior construction is poor.

  Therefore, the object of the present invention is to install a circular saw machine having different specifications depending on the adjusting member, which is composed of an adjusting member and a measuring member, which are installed on the surface of the saw blade, and having different width and thickness. The measuring member can measure the angle with respect to the timber, and the mark made by measuring the angle of the timber by man-made and marking it with a circular saw machine as before. An object of the present invention is to provide a saw blade for wood that can be adjusted in angle without cutting the wood along the edge.

In order to achieve the above-mentioned object, an angle-adjustable wood saw blade according to the claims of the present invention is an angle-adjustable structure composed of an adjustment member and a measurement member, which are installed on the surface of the saw blade. A saw blade for wood.
The adjustment member is installed on one side of the base surface, and is composed of a set of long rails and two pairs of connection blocks, and the pair of connection blocks is formed by two screws on one side of the base surface by screws and wing nuts. Fastened and fixed to stereotaxic holes in the corners. In the same way, the other pair of connection blocks are fastened and fixed to the guide rail groove inside the base by screws and butterfly nuts, and the butterfly nuts quickly loosen the connection blocks in the guide rail grooves. It is possible to freely reciprocate the connection block along the guide rail groove. A pair of long guide rails straddle the two pairs of connection blocks supported on the table surface. The volume of the connection block is the same as the volume of the storage chamber at both ends of the long guide rail, the connection block fits tightly in the storage chamber of the long guide rail, and screws are installed on both sides of the storage chamber and the connection block. A hole and a multistage adjustment hole are respectively opened, and a screw and a butterfly nut can be inserted and fastened. Thus, a set of the long guide rails can be fastened and united over two pairs of connection blocks.

  The measuring member is composed of a rotating arm and a tooth set, and one protrusion is provided on the lower surface of the fixed end of the rotating arm. The protrusion is inserted into the shaft hole on the base surface and pivotally attached to the lower surface of the base plate, and a rapid disassembly hole is provided on the arm surface close to the free end, and the rapid disassembly hole is formed on the base surface. Opposed to the opened arc-shaped holes, they are inserted and locked by the rapid disassembling member. Thereby, the rotation and orientation of the rotating arm are controlled, and the angle adjustment is convenient. In the vicinity of the arc-shaped hole provided on the base surface, a dimension mark used for adjusting the angle of the rotating arm is attached.

  The pelvic set is composed of a large pelvis having a predetermined gear ratio (1: 2), a medium pelvis, and a small pelvis. The large tooth disk is installed in the shaft hole on the lower surface of the base surface, and the shaft hole in the center of the large tooth disk is fitted with the protrusion of the rotating arm. Screws fitted with washers screw the rotating arm, shaft hole, and large tooth disc into a single unit. The middle tooth board and the small tooth board are fastened to the lower surface of the base surface in order by screws, and the small tooth board is located between the large tooth board and the middle tooth board, so that these tooth boards become an interlocking body.

  The middle tooth disk has a semicircular shape, and the surface having no tooth portion has a flat surface, which makes it convenient to install a ruler whose length is longer than the base surface. It is possible to turn the turning arm directly after leaving the ruler for measuring the angle.

  The pelvic set may be configured by combining a large pelvis having a predetermined gear ratio (1: 2), a medium pelvis, and a drive belt. The large tooth pelvis is installed in the shaft hole on the lower surface of the base surface, and the driving belt is fitted between the large tooth pelvis and the middle tooth pelvis so that they become an interlocking body. A rotating arm which is fastened by a screw fitted with a large tooth disk and fitted with a washer is rotated to a predetermined angle in accordance with the rotation of the interlocking body. On the underside of the base surface, there is one push-up rod on each side of the drive belt provided between the large tooth disc and the middle tooth disc, and the rod head of the push-up rod presses the drive belt by pressing the outer surface of the drive belt. To do.

  The base surface is provided with a guide groove having a bottom surface that is recessed from the base surface to a predetermined area. The guide groove is fitted to a long plate having the same dimension, and a plurality of screws are screwed into the long plate from the lower surface of the table to fix the long plate on the table. When the circular saw machine cuts wood, the long plate body is cut instead of the base surface. Therefore, the base surface is not damaged, and if the long plate body is damaged to some extent, it is easy to replace it.

The angle-adjustable wood saw blade according to the present invention allows a circular saw machine with different specifications depending on the adjustment member to be mounted on the saw blade to cut wood of different widths and thicknesses. It is possible to measure the angle relative to the wood. It is possible to omit the cutting of the wood along the mark made by the circular saw machine by measuring the angle of the wood artificially and attaching the mark as in the past.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1A to 3B, the angle-adjustable wood saw table according to the embodiment of the present invention includes an adjustment member 2 and a measurement member 3 which are installed on a table surface 11 of the saw table 1. Is.

  The guide surface 12 is provided with a guide groove 12 having a bottom surface that is recessed in a predetermined area, and the guide groove 12 is fitted to a long plate 1A having the same dimensions. Further, by screwing a plurality of screws 1B upward from the lower surface of the base surface 11 into the long plate body 1A, the long plate body 1A is fixed on the base surface 11, and when the circular saw machine 4 cuts the plate material 4A, Instead, since the long plate 1A is cut, the base surface 11 is not damaged. If the long plate 1A is damaged to some extent, it can be easily replaced. A positioning hole 13 and a guide rail groove 14 are respectively provided on both sides of the guide groove 12, and two pairs of connection blocks 2B of the adjusting member 2 are connected to and positioned. A shaft hole 15 penetrating the base surface 11 is provided on the side of the guide groove 12 where the guide rail groove 14 is provided.

  The adjustment member 2 is installed on one side of the base surface 11 and includes a set of long rails 2A and two pairs of connection blocks 2B. A pair of connection blocks 2B are fastened and fixed to a stereotaxic hole 13 at one of the two corners on the surface 11 by screws 1B and a butterfly nut 1C, and the other connection blocks 2B are screwed in the same manner. 1B and the butterfly nut 1C are fastened and fixed to the guide rail groove 14 inside the base surface 11. The butterfly nut 1 </ b> C allows the connection block 2 </ b> B provided in the guide rail groove 14 to loosen quickly and allows the connection block 2 </ b> B to slide back and forth along the guide rail groove 14. A pair of long guide rails 2 </ b> A straddle the two pairs of connection blocks 2 </ b> B supported on the base surface 11. The volume of the connection block 2B is the same as the volume of the storage chamber 2A1 at both ends of the long guide rail 2A. The connection block 2B is tightly fitted into the storage chamber 2A1 of the long guide rail 2A, and screw holes 2A2 and multistage adjustment holes 2B1 are provided on both sides of the storage chamber 2A1 and the connection block 2B, respectively. The butterfly nut 1C can be inserted and fastened. Thereby, the set of long guide rails 2A can be fastened and united over the two pairs of connection blocks 2B.

  The measuring member 3 includes a rotating arm 3A and a tooth set, and one protrusion 3A1 is provided on the lower surface of the fixed end of the rotating arm 3A. The protrusion 3 </ b> A <b> 1 is inserted through the shaft hole 15 in the base surface 11 and pivotally attached to the tooth set on the lower surface of the base surface 11. A rapid decomposition hole 3A3 and a magnifying glass 3C are installed on the arm surface 3A2 close to the free end, and the rapid decomposition hole 3A3 faces the arcuate hole 16 provided on the base surface 11. They are inserted and locked by the rapid disassembly member 3D. Thereby, the rotation and orientation of the rotation arm 3A are controlled, and the angle adjustment is convenient. In the vicinity of the arc-shaped hole 16 in the base surface 11, a dimension mark 17 used for adjusting the angle of the rotating arm 3A is attached. The magnifying glass 3C provided on the arm surface 3A2 of the rotating arm 3A makes it easy to observe the dimension mark 17. The tooth set is composed of a large tooth plate 3E, a medium tooth plate 3F, and a small tooth plate 3G having a predetermined gear ratio (1: 2). The large tooth disk 3E is installed in the shaft hole 3E1 on the lower surface of the base surface 11, and the shaft hole 3E1 in the center of the large tooth disk 3E is fitted with the protrusion 3A1 of the rotating arm 3A. The screw 3H fitted with the washer screws the rotating arm 3A, the shaft hole 15, and the large tooth disc 3E, so that they are integrated. The middle tooth disk 3F and the small tooth disk 3G are fastened to the lower surface of the base surface 11 in order by screws 1B. The small pelvis 3G is positioned between the large pelvis 3E and the middle pelvis 3F, so that the pelvis become an interlocking body. The middle tooth plate 3F has a semicircular shape, and a surface having no tooth portion has a flat surface. Accordingly, it is convenient to install the ruler 3F1 having a length longer than the base surface 11, and the rotating arm 3A can be directly rotated after leaving the ruler 5 for measuring the angle.

  One circular saw machine 4 is provided between the long guide rails 2A of the adjusting member 2 according to the embodiment of the present invention, and the circular saw machine 4 can reciprocate between the long guide rails 2A. Is possible. The long guide rail 2A makes the circular saw machine 4 move stably and smoothly, thereby improving the efficiency of cutting the plate material and adjusting the long guide rail 2A of the adjusting member 2 and the two pairs of connection blocks 2B. By doing so, it becomes possible to attach the circular saw machine 4 having different specifications to the saw table 1. As a result, the plate material 4A having a different width and thickness can be cut, which is very convenient.

  As shown in FIGS. 4A to 4I, in this embodiment, when adjusting the long guide rail 2A, the volume of the connection block 2B is the same as the volume of the storage chamber 2A1 at both ends of the long guide rail 2A. The connection block 2B is tightly fitted in the housing chamber 2A1 of the long guide rail 2A. A screw hole 2A2 and a multistage adjustment hole 2B1 are provided on both sides of the storage chamber 2A1 and the connection block 2B, respectively, and the screw 1B and the butterfly nut 1C can be inserted and fastened. Thereby, a set of long guide rails 2A can be fastened and united over two pairs of connection blocks 2B, and a pair of connection blocks 2B located on the guide rail groove 14 of the base surface 11 The screw 1B and the butterfly nut 1C can be quickly loosened or fastened. The connection block 2B can reciprocate on the guide rail groove 14, and the long guide rail 2A can reciprocate synchronously. Therefore, by making it possible to adjust the width between the long guide rails 2A, it becomes possible to attach the circular saw machine 4 having different specifications to the saw base 1, and thereby, the plate material 4A having different width and thickness. It is very convenient.

  When adjusting the two pairs of connection blocks 2B, the two pairs of connection blocks 2B are loosened or fastened quickly by the screws 1B and the butterfly nuts 1C for fastening the long guide rail 2A and the connection block 2B. Is possible. Thus, both ends of the long guide rail 2A can reciprocate up and down with respect to the connection block 2B. The circular saw machine 4 straddling between the long guide rails 2 </ b> A can also move up and down in a reciprocating manner, and the circular saw machine 4 having different specifications can be attached to the saw table 1. When cutting the plate material 4A of different width and thickness, if the screw 1B and the butterfly nut 1C are fastened and fixed, the vertical height of the circular saw machine 4 can be adjusted, and the circular saw machine 4 is different. The plate material 4A having a thickness can be cut.

  By adjusting the relative position between the long guide rail 2A of the adjusting member 2 and the connection block 2B, a circular saw machine 4 having a different specification can be attached to the saw table 1. Accordingly, it is possible to cut the plate material 4A having different width and thickness, which is very convenient. When it is necessary to cut the plate material 4A at different angles, the plate material 4A is adjusted to a predetermined angle by the circular saw machine 4 by directly adjusting the plate material 4A to a predetermined angle by the measuring member 3 installed on the base surface 11. It is possible to cut into After the plate material 4A is artificially measured and the angle is calculated and the mark is attached to the plate material 4A, the work of placing the plate material 4A on the base surface 11 of the saw table 1 and cutting along the mark by the circular saw machine 4 can be omitted. Work becomes convenient.

  In the measurement method according to the present embodiment, first, a sample of the plate material 4A is measured with the ruler 5 for measuring the angle, and then one end of the ruler 5 is left on the saw blade as shown in FIGS. 5A to 7B. The middle tooth board 3F is rotated until the ruler 3F1 provided on the other surface having no tooth portion and protruding the tooth board comes into contact with the other end of the ruler 5 in parallel. The small tooth pelvis 3G and the large pelvis 3E are interlocked by the middle tooth pelvis 3F, and the rotating arm 3A which is fastened by the screw 3H fitted with the large pelvis 3E and fitted with a washer is interlocked with the large tooth pelvis 3E. It rotates to a predetermined angle as the body rotates. Thereafter, when the rapid disassembling hole 3A3 provided in the rotating arm 3A and the arc-shaped hole 16 opened in the base surface 11 are fastened by the rapid disassembling member 3D, the rotating arm 3A is localized at a predetermined angle. . At this time, the plate material 4A to be cut is placed on the base surface 11, brought into contact with the predetermined peripheral surface of the rotating arm 3A, and cut by the circular saw machine 4 installed between the long guide rails 2A. 4A can be cut at a predetermined angle.

  It is also possible to enlarge the dimension mark 17 with a magnifying glass 3C installed on the arm surface 3A2 of the rotating arm 3A and view the measurement result. The rotating arm 3A is turned to a predetermined angle, and the loosened quick disassembly member 3D is fastened. At this time, the plate material 4A to be cut is placed on the base surface 11, brought into contact with the predetermined peripheral surface of the rotating arm 3A, and cut by the circular saw machine 4 installed between the long guide rails 2A. 4A can be cut at a predetermined angle.

  When the plate material 4A is cut to a predetermined geometric angle by the saw table 1 according to the present embodiment, the plate material 4A is artificially measured, the angle is calculated and a mark is attached to the plate material 4A, and then the plate material 4A is attached to the surface 11 of the saw table 1. It is possible to omit the work of cutting along the mark by the circular saw machine 4. The method of use of this embodiment is that a sample of the plate 4A is measured with a ruler 5 for measuring the angle, and then one end of the ruler 5 is left on the saw stand and provided on the other surface having no tooth portion. When the middle tooth disc 3F is rotated until the ruler 3F1 protruding from the ruler 5 abuts against the other end of the ruler 5 in parallel, the turning arm 3A is adjusted to a predetermined angle and is installed between the long guide rails 2A. If it cuts with the takanoko machine 4, the board | plate material 4A can be cut at a predetermined angle.

  As shown in FIG. 8, the tooth set according to the embodiment of the present invention can be configured by combining a large tooth plate 3E, a medium tooth plate 3F and a driving belt 3J having a predetermined gear ratio (1: 2). is there. The large tooth disk 3E is installed in the shaft hole 15 on the lower surface of the base surface 11, the shaft hole 3E1 at the center of the large tooth disk 3E is fitted to the protrusion of the rotating arm 3A, and the screw 3H fitted with the washer is the rotating arm 3A. And the shaft hole 15 and the large tooth disk 3E are screwed together. The middle tooth board 3F is fastened to the lower surface of the base surface 11 with screws 1B, and the drive belt 3J is fitted between the large tooth board 3E and the middle tooth board 3F to become an interlocking body, which is fitted with the large tooth board 3E and isher. The rotating arm 3A, which is fastened by the screw 3H fitted with the screw and integrated with the large tooth disc 3E, rotates to a predetermined angle according to the rotation of the interlocking body. On the lower surface of the base surface 11, one push-up rod 3I is provided on each side of the drive belt 3J provided between the large tooth disc 3E and the middle tooth plate 3F, and the rod head 3I1 of the push-up rod 3I is the outer surface of the drive belt 3J. By pushing, the drive belt 3J is tightened, and thus it is possible to prevent the drive belt 3J from falling off.

  As shown in FIG. 9, when a large plate material 4A is mounted on the table surface 11 of the saw table 1 according to the embodiment of the present invention, or when the plate material 4A is 90 degrees, the rotating arm 3A of the measurement member 3 is a table surface. 11, the space for leaving the plate material 4 </ b> A on the base surface 11 is insufficient. At this time, by removing the rotating arm 3A of the measuring member 3 installed on the table surface 11, the space on the table surface 11 becomes sufficient, and as a result, the large plate material 4A can be mounted on the plate surface 4A. Can be cut at 90 degrees.

  Thus, although described with reference to particular examples of the present invention, those examples are for illustrative purposes only, and are not intended to limit the invention and have ordinary knowledge in the art. Those skilled in the art will recognize that changes, additions, or deletions may be made to the embodiments disclosed herein without departing from the spirit and scope of the present invention.

It is a perspective view which shows the combined state of the saw blade for woods which can adjust an angle by the Example of this invention. 1 is an exploded perspective view showing an angle adjustable wood saw blade according to an embodiment of the present invention. 1 is a bottom view of a base surface of a saw blade for wood according to an embodiment of the present invention capable of adjusting an angle; It is a perspective view which shows the connection block of the adjustment member of the saw blade for wood which can adjust an angle by the Example of this invention. It is sectional drawing which shows the connection block of the adjustment member of the saw blade for wood which can be angle-adjusted by the Example of this invention. It is the perspective view seen from the upper side of the long rail of the adjustment member of the saw blade for wood according to the embodiment of the present invention. It is the perspective view seen from the long rail of the adjustment member of the saw blade for wood saws which can adjust an angle by the example of the present invention. FIG. 5 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 3 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a side cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a front cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a front cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a front cross-sectional view showing that an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention adjusts thickness and width. FIG. 5 is a schematic view illustrating a state in which an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention is not measured by a ruler. FIG. 5 is a schematic view illustrating a state in which an angle-adjustable wood saw blade adjusting member according to an embodiment of the present invention is not measured by a ruler. It is the schematic which shows measuring an angle with the ruler of the saw blade for wood which can adjust an angle by the Example of this invention. FIG. 6 is a schematic view illustrating adjusting a rotating arm and a circular saw after measuring an angle with a ruler of a saw blade for wood according to an embodiment of the present invention. FIG. 6 is a schematic view illustrating adjusting a rotating arm and a circular saw after measuring an angle with a ruler of a saw blade for wood according to an embodiment of the present invention. It is the schematic which shows measuring another angle with the ruler of the saw blade for wood which can adjust an angle by the Example of this invention. FIG. 6 is a schematic view illustrating adjusting a rotating arm and a circular saw after measuring other angles with a ruler of a saw blade for wood according to an embodiment of the present invention. It is the schematic which shows cutting a board | plate material with the circular saw machine of the suitable Example of this invention. It is the schematic which shows having mounted the tooth base by another Example of this invention to the bottom face of a saw blade.

Explanation of symbols

  1 saw blade, 1A long plate, 1B screw, 1C butterfly nut, 2 adjustment member, 2A long guide rail, 2A1 storage chamber, 2A2 screw hole, 2B connection block, 2B1 adjustment hole, 3 measurement member, 3A times Moving arm, 3A1 protrusion, 3A2 arm surface, 3A3 rapid disassembly hole, 3C magnifying glass, 3D member for rapid disassembly, 3E large tooth disc, 3E1 shaft hole, 3F medium tooth plate, 3F1 ruler, 3G small tooth disc, 3H screw 3J drive belt, 4 circular saw machine, 4A plate material, 5 ruler, 11 base surface, 12 guide groove, 13 positioning hole, 14 guide rail groove, 15 shaft hole, 16 arc-shaped hole, 17 dimension mark, 31 push-up Rod, 311 Rod head

Claims (5)

An angle-adjustable wood saw blade that is installed on the surface of the saw blade and is composed of an adjustment member and a measurement member,
The adjusting member is installed on one side of the base surface, and is composed of a set of long rails and two pairs of connection blocks, and the pair of connection blocks is provided on one side of the base surface by screws and wing nuts. The other connection block is similarly fastened and fixed to the guide rail groove inside the base surface by screws and a butterfly nut, and the guide rail is fixed by the butterfly nut. The connection block provided in the groove for use can be loosened quickly, and the connection block can slide back and forth along the groove for the guide rail, and there are two pairs of connection blocks supported on the base surface. A set of long guide rails straddles each other, and the volume of the connection block is the same as the volume of the storage chamber at both ends of the long guide rail, and the connection block is tightly placed in the storage chamber of the long guide rail. Mating The screw holes and the multi-stage adjustment holes are opened on both sides of the storage chamber and the connection block, respectively, so that the screw and the butterfly nut can be inserted and fastened. The elongate guide rail can be constructed integrally by fastening over two pairs of connection blocks,
The measuring member is composed of a rotating arm and a tooth set, and a protrusion is provided on the lower surface of the fixed end of the rotating arm, and the protrusion is inserted into a shaft hole on the surface of the surface. A fast disassembly hole is installed in the arm surface close to the free end, and the rapid disassembly hole is opposed to the arc-shaped hole formed in the base surface, and they are disassembled rapidly. It is inserted and locked by the member, and thereby the rotation and orientation of the rotating arm are controlled, and the angle adjustment becomes convenient. In the vicinity of the arc-shaped hole on the base surface, the rotating arm is Dimensional marks used when adjusting the angle are attached, and the pelvic set is composed of a large pelvis having a predetermined gear ratio (1: 2), a medium pelvis and a small pelvis. The large tooth disc is installed in the shaft hole on the lower surface of the base surface, and the shaft hole in the center of the large tooth plate is a rotating arm. Screws fitted with the projections and with washers screw the rotating arm, shaft hole, and large toothboard into one, and the middle toothboard and the small toothboard are placed on the base surface in order by the screws. An angle-adjustable wood saw bed, characterized in that it is fastened to the lower surface and the small tooth disk is located between the large tooth board and the middle tooth board so that the tooth boards can be interlocked.   The angle-adjustable wood saw blade according to claim 1, wherein one magnifying glass is provided on the arm surface of the rotating arm, the dimension mark is enlarged, and observation is convenient.   The middle pelvis has a semicircular shape, the surface without the tooth portion is a flat surface, and it is convenient to install a ruler whose length is longer than the base surface. The saw blade for wood according to claim 1, wherein the movable arm can be directly rotated.   The pelvic set is configured by combining a large pelvis having a predetermined gear ratio (1: 2), a medium pelvis, and a drive belt, and the large pelvis is installed in a shaft hole on the lower surface of the base surface and is large. By fitting the drive belt between the pelvis and the middle pelvis, they become an interlocking body, and the rotating arm integrated with the large pelvis is fastened with screws fitted with the large pelvis and fitted with washers. According to the rotation of the interlocking body, it is rotated at a predetermined angle, and on the lower surface of the base surface, one push-up rod is provided on each side of the drive belt provided between the large tooth disk and the middle tooth disk, The saw blade for wood according to claim 1, wherein the rod head presses the outer surface of the drive belt to tighten the drive belt.   The base surface is provided with a guide groove having a bottom surface that is recessed from the base surface to a predetermined area, and the guide groove is fitted with a long plate having the same dimension, and a plurality of screws are provided upward from the bottom surface of the base surface. By screwing into the long plate body, the long plate body is fixed on the base surface, and when the circular saw machine cuts the wood, the long plate body is cut instead of the base surface, and the base surface is not damaged, The angle-adjustable wood saw blade according to claim 1, wherein when the long plate member is damaged to some extent, it can be easily replaced.

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