JPH01105701A - Distribution rafter working method and device in desk circular saw - Google Patents

Abstract

PURPOSE: To accurately and easily perform the working by mounting a work timber supporting face which oscillates a work timber side face in a vertical direction, on a bench circular saw comprising the angle cutting function. CONSTITUTION: A fence 11 is standed on a rear part of an upper face of a base 1 with which a turn table 2 is rotatably engaged to be used as a supporting face of a work timber 17. An attachment main body frame 12 having the L- shaped section is mounted on a rectangular part formed by the fence 11 and the base 1 upper face, further a support 16 comprising a rectangular work timber supporting face is mounted, the support 16 is oscillatable in the vertical direction on a shaft 13 mounted in parallel with the support 16, and an oscillating angle of the support 16 can be adjusted by moving an angle adjustment screw 18 in the vertical direction. The bracing rafter of a specific size can be easily obtained by the co-operation of this adjustment operation and the positioning operation of the angle of the circular saw 10 by rotating the turn table 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for machining a distributed saw on a tabletop circular saw.

[Background of the invention]

As shown in FIG. 3, the frame of the roof of a wooden building has a corner board 20 and a rafter 19 that is combined with the corner board 20. As shown in FIG. 4, the cut end of the part of the distributed rafter 19 that is joined to the corner board 20 (section B in FIG. 3) has an inclined portion with respect to the vertical plane in both the plan view and the front view. Such cuts can be made using a conventional tabletop circular saw, which is equipped with a turntable that is rotatably supported on a base, and a circular saw that rotates integrally with the turntable is placed above the turntable. Although the tabletop circular trowel that cuts the workpiece by lowering the circular saw to the workpiece positioned below the saw has an inclined surface at an angle α shown in the fourth national diagram, Since the angle θ shown in the front view could not be set, it was impossible to process the distributed canopy 19.

For this reason, it has conventionally been common practice to use a hand saw to cut the workpiece along ink lines that have been marked in advance on the workpiece, and time is wasted in the machining work of the distributed logs.

[Purpose of the invention]

The purpose of the present invention is to enable the machining of a distributed saw that requires an accurate slanted cut using a conventionally well-known tabletop circular saw, and to expand the use of the tabletop circular saw. The purpose is to enable processing to be performed accurately and extremely easily.

[Summary of the invention]

The present invention includes a turntable that is rotatably supported by a base, a circular saw that rotates integrally with the turntable is placed above the turntable, and a workpiece that is placed below the circular saw. On the other hand, in a tabletop circular saw that cuts the workpiece by lowering the circular saw, a workpiece support surface is formed on a base portion adjacent to the turntable, and this workpiece support surface is connected to the support surface of the workpiece. We focused on the fact that if the machine is configured to be able to swing up and down using a shaft horizontally installed parallel to the plane as a fulcrum, the workpiece can be processed into a predetermined size arrangement by adjusting the swinging of the workpiece support surface. It is a tabletop circular saw with an angle cutting function, and the relationship between the cut surface of the distributed saw and the cutting surface has been devised.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

1 is the base. A turntable 2 is rotatably fitted into the base 1, and a hinge 4 is fixed to the lower part of the turntable 2 with bolts 3. Therefore, when the hinge 4 rotates in the horizontal direction, the turntable 2 also rotates.

A fence 11 is erected at the rear of the top surface of the base 1.
It is used as a support surface for the workpiece 17.

At the rear end of the hinge 4, a mold section 7 is provided which swings up and down about the hinge shaft 6 as a fulcrum, and a circular saw 10 that is rotatably driven is disposed in the mold section 7.

In addition, numeral 5 in the figure indicates a handle for rotationally positioning the turntable 2, and by pressing the tip of the handle 5 against the base 1, the rotation of the turntable 2 is locked. Reference numeral 8 denotes an operation handle for swinging the model portion 7;
is a saw cover that protects the circular saw 10.

The desk circular saw described above is well known in the art, and has the functions of right angle cutting and angle cutting as shown in FIG. When the circular saw 10 is set in the right-angle cut position and the workpiece 17 (the workpiece is described as a square material) is cut, a right-angle cut is obtained in both the plan view and the front view, as shown in FIG. It will be done.

Furthermore, when the workpiece 17 is cut by setting the circular saw 10 at an arbitrary cutting angle (α), a material having an inclined part of α in the plan view as shown in FIG. 6 is obtained. It will be done.

In addition to the materials obtained by the above-mentioned right-angle cutting and angle cutting, the present invention also provides a distributed rafter used as a frame for the roof of a wooden building, that is, as shown in FIG. The material is machined in a shape, and the support surface for the workpiece is swingable up and down using a shaft horizontally installed parallel to the support surface as a fulcrum, and the swing adjustment of the support surface and the circular saw By adjusting the rotational position, the workpiece is processed into a predetermined distribution of dimensions.

Hereinafter, a case will be explained in which the structure of the workpiece support surface section is configured as an attachment type that can be freely attached and detached from the tabletop circular saw body.

At the orthogonal portion formed by the fence 11 and the upper surface of the base 1, an attachment body frame 12 having an angular cross section is provided so as to be detachable from the orthogonal portion. A support 16 having an orthogonal workpiece support surface is further arranged on the attachment body frame 12, and the support 16 can freely swing up and down about a shaft 13 horizontally installed parallel to the workpiece support surface. is supported by the attachment body frame 12.

14 is a plate provided on the attachment body frame 12, and the plate 14 is provided with an arcuate hole 14a for guiding the swinging of the support 16, and a knob ↓5 for positioning the support 16 is engaged with the arcuate hole 14a. are doing. Reference numeral 18 denotes an angle adjustment screw, and by moving this screw 18 up and down, the swing angle of the support 16 can be adjusted.

In the above configuration, when machining the distributed saw 19, the turntable 2 is rotated to position the circular saw 10 at the angle α in the same manner as in the case of angle cutting, and the orthogonal workpiece support surface is and positioning the supports 16 with the formed structure by swinging them to the inclination angle θ of the distributed rafters.
By placing the workpiece 17 on the support 16 and lowering the circular saw 1o, the cutters 19 with predetermined dimensions can be easily obtained.

In addition, in the above embodiment, a case was explained in which the workpiece support surface is configured as an attachment that can be detached from the main body of the tabletop circular saw, but if you do not consider making use of the conventional tabletop circular saw, It is also possible to obtain a similar effect by directly constructing the support part from the fence and the upper surface of the base.

That is, the present invention provides a tabletop circular saw with an angle cutting function,
By providing a workpiece support surface that swings the workpiece side surface (FIG. 1 178) up and down, the purpose is to enable the processing of the distributed raft.

〔Effect of the invention〕

According to the present invention, the workpiece support surface of a tabletop circular saw with an angle cutting function is configured to be able to swing up and down, and by adjusting the swing of the workpiece support surface and adjusting the rotational position of the circular saw, Since the material to be processed can be machined into slats with predetermined dimensions, it is possible to provide slats using a tabletop circular saw, which was previously considered impossible.

In addition, by providing a workpiece support surface as an attachment and making it detachable from the two bodies of the tabletop circular saw, a new use of rafter processing can be added to the tabletop circular saw, which has the well-known angle cutting function. This method has a practical effect in that it is possible to carry out Daruki processing accurately and extremely easily with a compact device.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side view showing an embodiment of a table-top circular saw according to the present invention, Fig. 2 is a plan view of the main part seen from direction A in Fig. 1, and Fig.
The figure is a plan view showing the frame structure of the roof, Figure 4 is an explanatory diagram of the shape of the distributed rafters, Figure 5 is an explanatory diagram of the shape of the processed material cut at right angles, and Figure 6 is the explanatory diagram of the processed material cut at an angle. It is a shape explanatory diagram. In the figure, 1 is a base, 2 is a turntable, 10 is a circular saw, 12 is an attachment body frame, 13 is a shaft, 16
is the support, 17 is the processed material, 17s is the processed material side, 19
20 indicates a handout, and 20 indicates a corner tree. Figure 1

Claims (1)

[Claims] 1. A turntable rotatably supported by a base is provided, a circular saw that rotates integrally with the turntable is disposed above the turntable, and a circular saw is positioned below the circular saw. In the tabletop circular saw that cuts the workpiece by lowering the circular saw, a workpiece support surface for supporting a columnar workpiece is provided on a base portion adjacent to the turntable. A tabletop circular saw, characterized in that the workpiece is cut by a vertical cutting surface of the circular saw that makes a certain acute angle with respect to the axis of the workpiece when the workpiece support surface is inclined. Distributed tartar processing method. 2. A turntable is rotatably supported by the base, a circular saw that rotates integrally with the turntable is placed above the turntable, and the workpiece placed below the circular saw is In a tabletop circular saw that cuts the workpiece by lowering the circular saw, a workpiece support surface for supporting a columnar workpiece is formed on a base portion adjacent to the turntable, and the workpiece is cut by lowering the circular saw. 1. A distributed sawing processing device for a tabletop circular saw, characterized in that a support surface is provided to be tiltable and movable about a shaft supported laterally parallel to the support surface as a fulcrum. 3. The distributed sawing device for a tabletop circular saw according to claim 2, wherein the workpiece support surface is configured as an attachment that can be freely attached to and detached from the tabletop circular saw body.