JP3116106U - Sawing jig - Google Patents

Abstract

An object of the present invention is to provide a saw jig capable of easily and accurately cutting wood at a desired cutting angle.
A saw jig 18 includes an L-shaped base 3 in which a flat upper plate 1 and a side plate 2 share one side and form a right angle, and an end of the base 3 And a turntable 4 slidably installed on the surface of the upper plate 1 and having a fixed guide portion 5 suspended thereon. The fixed guide portion 5 has a movable guide portion 6 movable in the direction indicated by L. In addition to being installed, a sliding portion 7 that is movable in the direction indicated by M is installed, the rotary plate 4 and the side plate 2 are provided with scales 9a and 9b, and the back surface of the upper plate 1 and the side plate 2 is A friction body 17 is attached.
[Selection] Figure 1

Description

  The present invention relates to a jig used when cutting wood such as square wood and log wood using a saw, and in particular, it is easy to perform cutting processing in which the cut surface forms a desired angle with respect to the length direction of the wood. The present invention also relates to a saw jig that can be accurately and accurately performed.

When a wood product is manufactured by combining a plurality of wood such as square wood and log wood, it is necessary to perform processing so that the angle of the cut surface with respect to the length direction of the wood (hereinafter referred to as the cutting angle) becomes a desired value. . For this reason, in general, the saw blade is placed along the marking line drawn on the wood, or a piece of wood is placed on the upper surface of the wood as a brace, and the side of the saw is brought into contact with the brace. A method for preventing the saw from being displaced is known. However, since the saw is not supported in the method using the scribe line, it is not easy to stabilize the posture of the saw during the cutting process. Further, in the case of an unskilled worker, it is difficult to cut wood at a desired cutting angle even when using a patch.
Therefore, conventionally, even a general worker who is not skilled in cutting wood has developed a technology that can cut wood accurately and easily at a desired cutting angle. Is disclosed.

  For example, Patent Document 1 discloses a saw with a name “saw guide” that prevents irregular swinging of the saw when cutting wood with a hand-sawed saw and enables accurate cutting at a specified angle. A device related to a guide is disclosed.

Hereinafter, the idea disclosed in Patent Document 1 will be described with reference to FIG.
FIG. 4 is a perspective view of a conventional saw guide.
As shown in FIG. 4, the device according to the prior art uses an L-shaped base 51 that abuts on the upper surface and side surfaces of the wood 62, and an axial screw 59 and a butterfly screw 60 at one end of the L-shaped base 51. And a guide plate 54 provided with a smooth plate 55 which is erected on the slide piece 53 and holds a magnet. The wood 62 of the L-type base 51 is provided. An anti-slip 52 is mounted on the abutting surface, an alignment point (A) 56 is engraved on the sliding piece 53, and an alignment point (B) 57 and an alignment point (C) 58 are marked on the L-shaped base 51. Is imprinted.
In the “saw guide” having the above structure, the sliding point 53 is fixed by matching the matching point (A) 56 with the matching point (B) 57 or the matching point (C) 58 and tightening the hinge 60. The guide plate 54 is fixed at an angle of 90 degrees and 45 degrees with respect to the length direction of the wood 62, respectively. Thereby, according to these set angles, it becomes possible to cut | disconnect the wood 62 correctly. In addition, the magnet attracts the saw 61 to prevent lateral swing, and the non-slip 52 increases the degree of fixing of the L-type base 51 to the wood 62, so that the cutting operation can be performed stably.

Further, Patent Document 2 discloses a device regarding a ruler for enabling accurate sawing with respect to a columnar material such as a square member, a ceiling plate, a long press, and a flooring member, with the name “sawing ruler”. Yes.
The device disclosed in Patent Document 2 is a ruler body attached to a columnar member by a ruler body attachment device, a guide plate fixed to the ruler body at a desired inclination angle by a fixing nut, and attached to the guide plate. The magnetic attraction reference member includes a permanent magnet disposed in the magnetic attraction reference member.
In the “sawing ruler” having the above structure, since the saw is attracted to the magnetic attraction reference member, the columnar material can be accurately cut. Further, the columnar material can be cut at a desired angle by fixing the guide plate to the scale of the ruler body. Furthermore, since the ruler body is securely fixed to the square bar by the ruler body mounting device, the ruler body is not displaced during the cutting operation.

Further, Patent Document 3 discloses an invention relating to a jig for allowing a wood to be accurately cut into various angles by a hand saw with the name “saw cutting jig”.
The invention disclosed in Patent Document 3 is composed of a base applied to wood, a saw blade guide having a gap for inserting a saw blade, and a support that fixes the saw blade guide to the base. The angle between the support and the angle between the support and the base can be changed.
In the “saw cutting jig” having the above structure, the wood can be cut at a desired angle by changing the angle of the support with respect to the base. Also, by fixing the saw blade guide not only to the front side but also to the front side, it is possible to work continuously without turning the workpiece over even if the tilt direction is different. Is possible.

Utility Model Registration No. 3083469 Japanese Utility Model Publication No. 5-24304 JP 2001-38701 A

  However, in the device disclosed in Patent Document 1 which is the above-described prior art, neither the L-type base 51 nor the sliding piece 53 is provided with a scale indicating the rotation angle. There is a problem that an angle that is not shown in the matching point (C) 58 cannot be set accurately. Further, although the L-type base 51 is provided with the anti-skid 52 on the back surface, the L-type base 51 does not have a mechanism for holding the wood 62, so that the position of the L-type base 51 may be shifted during the cutting operation. Furthermore, since the guide plate 54 is not disposed near the side surface of the wood 62 where the tip of the saw 61 is located during the cutting operation, the contact area between the saw 61 and the guide plate 54 decreases as the wood 62 is cut, As a result, there is a problem that the saw 61 is not sufficiently guided by the guide plate 54. Then, although the saw 61 is attracted by the magnet, the horizontal movement is prevented, but since a large frictional force acts between the saw 61 and the guide plate 54, the operation of the saw 61 requires a lot of labor. there were.

  In the device disclosed in Patent Document 2, since the guide plate is not disposed near the side surface of the square member where the tip of the saw is positioned during the cutting operation, the contact between the saw and the guide plate as the cutting of the square member proceeds. As a result, there is a problem that the guide function of the saw by the guide plate is not fully exhibited. In addition, although the saw is attracted to the magnetic attraction reference member and the square material can be cut accurately, the frictional force between the saw and the guide plate increases, so that there is a problem that much labor is required for the cutting work. It was.

  Moreover, in the invention disclosed in Patent Document 3, there is a problem in that an accurate angle setting cannot be performed because the base or the support does not have a scale indicating a rotation angle. Moreover, since the base is not provided with a slip prevention or holding mechanism, there is a high possibility that the position is shifted during the cutting operation. Furthermore, since the saw blade guide is not disposed near the side surface of the workpiece where the tip of the saw is located during the cutting operation, the contact area between the saw and the saw blade guide decreases as the cutting depth of the workpiece increases. . As a result, there is a problem that the guide of the saw by the saw blade guide becomes insufficient.

  The present invention has been made in view of such a conventional situation, and an object thereof is to provide a saw jig that can easily and accurately cut wood at a desired cutting angle.

To achieve the above object, a saw jig according to claim 1 is an L-shaped base having a flat upper plate and a side plate that are formed so that they share one side and form a right angle. A rotating plate that is pivotally supported by the end of the base and slides on the surface of the upper plate, a fixed guide portion that has a flat first guide surface and is suspended from the rotating plate, and a flat plate A movable guide portion that has a second guide surface and is installed on one side surface of the fixed guide portion so as to be movable with respect to the axial direction of the rotating disk. The first guide surface and the second guide surface are substantially the same. They are formed on the same surface.
In the saw jig having such a configuration, when the turntable is rotated with the base installed on the upper surface of the material to be cut such as wood, the first guide surface with respect to the length direction of the material to be cut And the second guide surface is arranged at a desired angle. Further, by moving the movement guide portion with respect to the axial direction of the rotating disk, the position of the second guide surface with respect to the axial direction of the rotating disk is changed.

The invention described in claim 2 is characterized in that, in the saw jig according to claim 1, the rotating disk includes a first scale indicating a rotation angle.
In the saw jig having such a configuration, the angle of the first guide surface with respect to the length direction of the material to be cut is set more accurately than the idea of the first aspect.

The invention described in claim 3 is the saw jig according to claim 1 or 2, wherein at least one of the upper plate and the side plate is larger than the upper plate and the side plate on the contact surface with the workpiece. A friction body having a friction coefficient is attached.
In the saw jig having such a configuration, in addition to the operation of the device described in claim 1 or 2, the operation of the base is difficult to shift with respect to the workpiece.

According to a fourth aspect of the present invention, in the saw jig according to any one of the first to third aspects, the side plate includes a second scale indicating a position in the length direction of the workpiece. It is characterized by.
In the saw jig having such a configuration, in addition to the operation of the device described in any one of claims 1 to 3, the length direction of the workpiece to be cut by the second scale Has the effect that the position relative to is shown.

The invention described in claim 5 is the saw jig according to any one of claims 1 to 4, and can be expanded and contracted from the other side surface of the fixed guide portion in substantially the same plane as the first guide surface. The sliding part is provided with a holding part for holding the object to be cut together with the side plate.
In the saw jig having such a configuration, in addition to the operation of the device described in any one of the first to fourth aspects, the sliding portion is substantially flush with the first guide surface. By moving the position, the distance between the side plate and the holding portion with respect to the width direction of the workpiece is changed.

The invention according to claim 6 is the saw jig according to claim 5, wherein the sliding portion includes a flat plate-like third guide surface, and the third guide surface includes the first guide surface and the first guide surface. The second guide surface is formed on substantially the same plane.
According to the saw jig having such a configuration, in addition to the function of the device described in claim 5, the position of the sliding portion is moved in substantially the same plane as the first guide surface. It has the effect | action that the position of the 3rd guide surface with respect to the width direction of a cut material is changed.

  As described above, in the saw jig according to the first aspect of the present invention, when the base is installed on the upper surface of the workpiece such as wood, the side surface of the saw is the first guide surface and the second guide surface. By cutting the workpiece while making contact with the guide surface, it is possible to easily cut the workpiece. Further, by moving the position of the moving guide portion, the second guide surface can be arranged in the vicinity of the side surface of the workpiece where the tip of the saw is located. Therefore, even when the cutting operation has progressed, the second guide The saw can be reliably guided by the surface.

  In the saw jig according to claim 2 of the present invention, in addition to the effect of the device according to claim 1, it is possible to accurately cut the workpiece at a desired cutting angle.

  In the saw jig according to claim 3 of the present invention, in addition to the effect of the idea described in claim 1 or claim 2, the base is not easily displaced from the workpiece during the cutting operation. Safety is improved.

  In the saw jig according to claim 4 of the present invention, in addition to the effect of the device described in any one of claims 1 to 3, the object to be cut is previously marked. Thus, even when the base is displaced in the length direction of the workpiece during the cutting operation, it can be easily returned to the original position. Further, by using the second scale, it is possible to perform the cutting operation by shifting the base by a desired length in the length direction of the workpiece.

  In the saw jig according to claim 5 of the present invention, in addition to the effect of the device described in any one of claims 1 to 4, the side plate and the holding jig are held according to the width of the object to be cut. Since the distance to the part can be adjusted, the base can be securely fixed to the workpiece.

  In the saw jig according to claim 6 of the present invention, in addition to the effect of the idea described in claim 5, even when the width of the object to be cut is wide by moving the position of the sliding portion. The saw can be reliably guided by the third guide surface.

  Hereinafter, examples of the saw jig according to the best mode of the present invention will be described with reference to FIGS. 1 to 3.

1 (a) and (b) and FIGS. 2 (a) and (b) are a perspective view, a front view, a right side view, and a left side view, respectively, of a saw jig according to an embodiment of the present invention. FIG.1 (c) is the figure which removed the movement guide part in Fig.1 (a). FIG. 3A is a plan view of the saw jig according to the embodiment of the present invention, and FIG. 3B is a diagram showing a state in which the angle of the rotating disk is changed from the state of FIG. is there.
As shown in FIGS. 1 and 2, the saw jig 18 of the present embodiment has a base 3 having an L-shaped cross section so that the flat plate-like upper plate 1 and side plate 2 share one side and form a right angle. A rotating disk 4 is attached to the end of the base 3 so as to be slidable on the surface of the upper plate 1, and a fixed guide part 5 having a guide surface 16 a is suspended from the rotating disk 4. .
The protrusion 5a formed on one side surface of the fixed guide portion 5 is fitted with a movable guide portion 6 that can move in the direction indicated by the direction L. From the other side surface of the fixed guide portion 5, the guide surface 16a is substantially omitted. A sliding portion 7 that extends and contracts in the direction indicated by the direction M in the same plane is extended.
The moving guide portion 6 includes a flat guide surface 16b formed substantially on the same surface as the guide surface 16a, and the lower end thereof extends to a position below the upper surface of the workpiece 19 with which the side plate 2 abuts. ing. In addition, the position of the movement guide portion 6 is maintained by tightening a thumbscrew 12b screwed into a screw hole 13b formed in the projection portion 5a through a long hole 11b formed long in a direction indicated by a direction L. It has a structure.
The sliding portion 7 includes a holding portion 8 that extends to a position below the upper surface of the workpiece 19 at a lower portion thereof. The holding portion 8 holds the workpiece 19 together with the side plate 2. The sliding portion 7 includes a flat guide surface 16 c formed substantially on the same surface as the guide surface 16 a including the holding portion 8, and is screwed into a screw hole 13 c formed in the fixed guide portion 5. By tightening the inserted thumbscrew 12c, the position is maintained in the direction indicated by the symbol M in FIG.

The turntable 4 is pivotally supported on the surface of the upper plate 1 by screws 14 inserted through through holes 15a and 15b formed in the turntable 4 and the upper plate 1 and screwed into nuts (not shown). A scale 9a indicating a plurality of rotation angles in the range of 30 to 90 degrees is provided radially on the upper surface of the turntable 4 around the through hole 15a. Further, the rotary disk 4 is formed with an arc-shaped long hole 11a centering on the through hole 15a, and the thumbscrew 12a screwed into the screw hole 13a formed in the upper plate 1 is inserted into the long hole 11a. The position is held by tightening through.
On the contact surfaces of the upper plate 1 and the side plates 2 with the workpiece 19, a synthetic resin film having minute irregularities is mounted as a friction body 17 having a large friction coefficient. Further, the side plate 2 is provided with a scale 9 b with respect to the length direction of the workpiece 19.
The base 3, the rotating disk 4, the fixed guide part 5, the moving guide part 6 and the sliding part 7 of this embodiment are made of synthetic resin, but are not limited to this. For example, they are made of metal. May be. However, the material of the guide surfaces 16a to 16c is preferably a hard synthetic resin such as acrylic having a small friction coefficient. Accordingly, the guide surfaces 16a to 16c are not formed integrally with the fixed guide portion 5, the moving guide portion 6 and the sliding portion 7, but are separated from each other, and the guide surfaces 16a to 16c are made of hard synthetic resin such as acrylic and fixed. A material other than the hard synthetic resin may be used for the guide portion 5, the moving guide portion 6 and the sliding portion 7.

In the saw jig 18 having the above-described configuration, the friction body 17 has an effect that the friction coefficient between the upper plate 1 and the side plate 2 and the workpiece 19 is increased, and the base 3 is not easily displaced. Further, the scale 9b has an effect that the position of the saw jig 18 with respect to the length direction of the workpiece 19 is indicated.
Furthermore, as shown in FIG. 2B, by cutting the workpiece 19 while the side surface of the saw 20 is in contact with the guide surfaces 16 a to 16 c, the saw 20 has an effect of suppressing the lateral shake of the saw 20. Since the guide surfaces 16b and 16c exist on any side surface of the workpiece 19 with the guide surface 16a as a center, as shown in FIG. In addition, even if the saw 20 is operated with the tip side facing up, there is always a guide surface in the traveling direction of the blade of the saw 20, and the saw 20 is easily guided. .
In addition, by changing the position of the movement guide portion 6, the position of the guide surface 16 b is moved in the direction indicated by the direction L. Then, by changing the position of the sliding portion 7, the position of the guide surface 16 c is moved in the direction indicated by the direction M.
In addition, the thumbscrew 12a is loosened and the turntable 4 is rotated around the through-hole 15a from the state shown in FIG. 3A, and a desired angle, for example, 60 degrees, as shown in FIG. By aligning the indicated scale 9 a with the reference position 10 and tightening the thumbscrew 12 a again, the guide surfaces 16 a to 16 c are fixed at an angle of 60 degrees with respect to the length direction of the workpiece 19. It has the action.

  As described above, in the saw jig 18 according to the present embodiment, the side surfaces of the saw 20 are guided by the guide surfaces 16a to 16c. It is possible to accurately cut the workpiece 19 at a desired cutting angle without raising it. In addition, since the distance between the side plate 2 and the holding portion 8 can be adjusted according to the width of the workpiece 19, the base 3 is securely fixed to the workpiece 19. Furthermore, since the positions of the guide surfaces 16b and 16c can be adjusted, the contact area between the side surface of the saw 20 and the guide surfaces 16b and 16c can be kept large even when the cutting operation proceeds. In addition, since the base 3 is hardly displaced from the workpiece 19 during the cutting operation, the safety of the operation is improved. In addition, by marking the workpiece 19 in advance, even if the base 3 is displaced in the length direction of the workpiece 19 during the cutting operation, the original state can be easily restored. Note that when the workpiece 19 is continuously cut a plurality of times, the base 3 may be shifted by a desired length using the scale 9b.

The saw jig 18 of the present invention is not limited to the configuration shown in this embodiment, and can be variously modified. For example, instead of the long holes 11a and 11b, a plurality of through holes may be formed at corresponding positions of the rotating disk 4 and the movement guide portion 6. Then, the positions of the rotary disk 4 and the movement guide portion 6 may be fixed by inserting pins instead of the butterfly screws 12a and 12b in the through holes. The scales 9a and 9b may be printed or stamped on the surface of the rotary disk 4 or the side plate 2, or a commercially available ruler with scales of angles and lengths may be attached. Furthermore, the friction body 17 is not limited to a synthetic resin film, and may be a material having a larger friction coefficient than the material of the base 3. Further, instead of attaching the friction body 17 to the contact surfaces of the upper plate 1 and the side plate 2 with the workpiece 19, minute irregularities may be formed.
In the present embodiment, the holding portion 8 of the sliding portion 7 is integrally fixed in the vertical direction, but may be movable similarly to the movement guide portion 6. In that case, it is preferable that a long hole is provided in the sliding portion 7 as with the movement guide portion 6 and fastened with a thumbscrew. If the holding portion 8 is movable in the vertical direction with respect to the sliding portion 7 in this way, the workpiece 19 can be easily clamped when it is a large material, and the guide function with respect to the progress of the operation of the saw 20 is prevented. It is also possible to do.

  As described above, the present invention described in claims 1 to 6 can be applied to a case where an object to be cut such as a square bar or a bar is cut at a desired cutting angle using a manual saw. The cut object is not limited to wood. For example, the present invention can be applied to cutting of a synthetic resin pipe or the like.

(A) And (b) is the perspective view and front view of the saw jig which concern on embodiment of this invention, respectively, (c) is the figure which removed the movement guide part in Fig.1 (a). (A) And (b) is the right view and left view of the saw jig which concern on embodiment of this invention, respectively. (A) is a top view of the jig | tool for saws concerning embodiment of this invention, (b) is a figure which shows the state which changed the angle of the rotary disk from the state of Fig.3 (a). It is a perspective view of the saw guide tool based on a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Upper plate 2 ... Side plate 3 ... Base 4 ... Rotating disk 5 ... Fixed guide part 5a ... Projection part 6 ... Movement guide part 7 ... Sliding part 8 ... Holding part 9a, 9b ... Scale 10 ... Reference position 11a, 11b ... Long holes 12a to 12c ... Thumb screws 13a and 13b ... Screw holes 14 ... Screws 15a and 15b ... Through holes 16a to 16c ... Guide surface 17 ... Friction body 18 ... Saw jig 19 ... Material to be cut 20 ... Saw 51 ... L-type base 52 ... Slip prevention 53 ... Sliding piece 54 ... Guide plate 55 ... Smooth plate 56 ... Aligning point (A) 57 ... Aligning point (B) 58 ... Aligning point (C) 59 ... Shaft screw 60 ... Bow screw 61 ... saw 62 ... wood L, M ... direction

Claims (6)

  A flat top plate and a side plate share one side and form a right angle with a base having an L-shaped cross section, and are pivotally supported by the end of the base and slide on the surface of the top plate A rotating disk, a fixed guide portion that has a flat first guide surface and is suspended from the rotating disk, and has a flat second guide surface and moves with respect to the axial direction of the rotating disk. And a movable guide portion that is freely installed on one side surface of the fixed guide portion, and the first guide surface and the second guide surface are formed on substantially the same surface. jig.   The saw jig according to claim 1, wherein the turntable includes a first scale indicating a rotation angle.   The at least one of the upper plate and the side plate is equipped with a friction body having a friction coefficient larger than that of the upper plate and the side plate on a contact surface with the workpiece. The saw jig according to claim 2.   The saw jig according to any one of claims 1 to 3, wherein the side plate includes a second scale indicating a position in a length direction of the workpiece.   A sliding portion extending from the other side surface of the fixed guide portion so as to extend and contract in substantially the same plane as the first guide surface, and the sliding portion holds the workpiece together with the side plate; The saw jig according to any one of claims 1 to 4, further comprising a portion.   The sliding portion includes a flat plate-like third guide surface, and the third guide surface is formed on substantially the same plane as the first guide surface and the second guide surface. The saw jig according to claim 5.