JP2510721Y2 - Positioning device for portable circular saw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a positioning device for a portable circular saw.

[Prior Art] Generally, in a positioning device for a portable circular saw of this type, as disclosed in Japanese Utility Model Publication No. 52-28294,
Provide a ruler plate with a guide member along the side end surface of the work piece on the base of the circular saw, and mark the surface of this ruler plate,
The distance from the guide member to the circular saw blade is obtained by reading the scale positioned on the side edge of the base as a reference.

[Problems to be Solved by the Invention] However, in the above-described conventional device, although the scale of the ruler plate positioned at the reference side provided on the side edge of the base can be read as it is, the reading is performed by the base. Since the reference provided on the side edge is used, it is relatively difficult to read, and when the ruler plate is used upside down, the scale cannot be used.

In view of the above-mentioned conventional drawbacks, the present invention has an object to provide a positioning device for a portable circular saw that can easily read the width of a workpiece to be cut.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a ruler plate slidably arranged in a direction orthogonal to a traveling direction such as cutting of a saw blade with respect to a base of a circular saw. And a guide plate that is provided on one end side of the ruler plate and is in contact with a side surface of the workpiece to be cut, the surface of the ruler plate being a workpiece on the guide plate. The guide end face that abuts against the scale is provided with a scale having a zero reference, and a reference portion serving as a reference for reading the scale of the ruler plate is formed on the base at a predetermined distance from the saw blade. The guide plate is mounted on the base so that the guide plate can be moved between the right side position and the left side position of the saw blade, and when the guide plate is positioned on the right side of the saw blade, the saw size is determined by the reference unit. Saw the guide plate by reducing the dimension between the blade and the reference part. When it is located on the left side of the blade, the size of the scale read by the reference part is added to the size between the saw blade and the reference part to obtain the interval width between the guide plate and the saw blade. To do.

[Operation] According to the above configuration, when the guide plate of the ruler plate along the side surface of the workpiece is positioned on the right side with respect to the cutting blade cutting direction, the guide plate is formed on the base. Read the scale size of the ruler plate that matches the standard part, and
When subtracting the size between the saw blade and the reference part from the read scale size, and when cutting on the left side, read the scale size of the ruler plate that matches the reference part formed on the base, and By adding the size between the saw blade and the reference portion to the read scale size, the width of the workpiece to be cut, that is, the distance between the saw blades from the guide end face of the guide plate in the ruler plate, can be obtained. is there.

[Embodiment] Hereinafter, an illustrated embodiment embodying the present invention will be described in detail. In the figure, a circular saw 1 is provided with a circular saw body 3 on a base 2 having a flat plate shape, and the circular saw body 3 is rotated by a motor housing 4 containing a motor (not shown) and the motor. Blade case 6 for covering the saw blade 5 and a handle 7 extended from the motor housing 3.
It consists of and.

Further, an insertion hole 8 and a fixing means 9 for mounting a ruler plate, which will be described later, are formed on the front end side of the base 2 in the traveling direction such as cutting of the saw blade 5. That is,
Standing pieces slightly raised upward on the four peripheral edges of the base 2.
2a is integrally formed, and rectangular insertion holes 8 and 8 are formed through the upright pieces 2a on the opposite left and right side edges, respectively, and the fixing means is provided on the same line as the insertion holes 8 and 8. An insertion portion 10 bent into a rectangle in 9 is formed, and a tightening screw 11 is screwed into the insertion portion 10.

The ruler plate 12 is formed in a relatively elongated flat plate shape, and one end thereof is bent in a substantially U shape and is bent downward at a substantially right angle, and a flat plate-shaped guide plate 13 is hung from the bent portion. It is installed upright. The guide plate is provided on the surface of the ruler plate 12.
With the guide end face of 13 as the zero reference, for example, 1 mm increment 1
4 is attached. Then, the ruler plate 12 is the base 2
On the other hand, in the state where the guide plate 13 is positioned on the left side (see FIG. 1) with respect to the traveling direction of the cutting of the saw blade 5 or the like, from the one insertion hole 8 of the base 2 to the other through the insertion portion 10 of the fixing means 9. The saw blade 5 is inserted into the insertion hole 8 so as to be slidable in the direction orthogonal to the traveling direction of cutting of the saw blade 5 and replaceable in the left-right direction, and is fixed by tightening the tightening screw 11 in the fixing means 9. Is configured.

On the base 2, a reference portion 15 serving as a reference for reading the scale 14 attached to the ruler plate 12 is formed by hollowing out in the shape of a substantially right-angled triangle with the apex angle on the scale 14 side of the ruler plate 12. The reference portion 15 is formed at a predetermined distance (60 mm is shown in this example) from the saw blade 5.

Subsequently, the operation of the present embodiment configured as described above will be described.

Now, with the ruler plate 12 with respect to the base 2 and the guide plate 13 thereof positioned on the left side with respect to the traveling direction of the cutting of the saw blade 5 and the like, the insertion portion from the one insertion hole 8 of the base 2 to the fixing means 9
In the state of being inserted through the other insertion hole 8 through 10 and installed in the direction orthogonal to the traveling direction such as cutting of the saw blade 5, with respect to the workpiece W having a desired width, for example, 140 mm width When cutting the workpiece W1 of, as shown in FIG.
Slide the ruler plate 12 to the left or right in the figure to match the 8 cm dimensional portion of the scale 14 with the reference portion 15 of the base 2, and set the interval between the saw blade 5 and the reference portion 15 to 60 mm in advance. Therefore, the distance between the guide end surface of the guide plate 13 of the ruler plate 12 and the saw blade 5 is 140 mm, which is the sum of 8 cm and 60 mm,
Here, the width of the workpiece W1 to be cut can be obtained. In other words, by matching the scale 14 of the dimension obtained by dividing the preset distance between the saw blade 5 and the reference portion 15 with respect to the width dimension of the workpiece W1 to be cut to the reference portion 15 of the base 2, The interval between the guide end surface of the guide plate 13 of the ruler plate 12 and the saw blade 5 can be set to be the same as the width of the workpiece W1 to be cut.

In this state, the tightening screw 11 in the fixing means 9
After the ruler plate 12 is fixedly fixed to the base 2 by tightening, the circular saw 1 is advanced while the guide end surface of the guide plate 13 is in contact with the side surface of the workpiece W, and cutting is performed by the saw blade 5. It is a thing.

Further, when the ruler plate 12 is replaced with respect to the base 2 and the guide plate 13 is located on the right side with respect to the traveling direction of the cutting of the saw blade 5, for example, with respect to the workpiece W having a desired width, , When cutting the workpiece W1 having a width of 20 mm, when the 8 cm dimensional portion of the scale 14 of the ruler plate 12 is aligned with the reference portion 15 of the base 2, the distance between the saw blade 5 and the reference portion 15 is reduced. Since it is set to 60 mm in advance, the guide plate 13 of the ruler plate 12
The distance between the guide end surface and the saw blade 5 is 20 mm obtained by dividing 8 cm to 60 mm, and the width of the workpiece W1 to be cut can be obtained here. In other words, by matching the graduation 14 of the dimension obtained by adding the preset distance between the saw blade 5 and the reference portion 15 to the width dimension of the workpiece W1 to be cut with the reference portion 15 of the base 2, The interval between the guide end surface of the guide plate 13 of the ruler plate 12 and the saw blade 5 can be set to be the same as the width of the workpiece W1 to be cut.

In this state, the tightening screw 11 in the fixing means 9
After fixing the ruler plate 12 to the base 2 by tightening, the circular saw 1 is moved forward by the saw blade 5 while the guide end surface of the guide plate 13 is in contact with the side surface of the workpiece W opposite to the above. The cutting process is performed.

In the present embodiment, the reference portion 15 for reading the scale 14 of the ruler plate 12 is formed by hollowing out in the flat portion of the base 2 into a substantially right-angled triangular hole whose apex angle is the scale 14 side. It is very easy to read the scale on the part 15.

[Advantage of the Invention] As described above, the present invention, when performing the cutting work by positioning the guide plate of the ruler plate along the side surface of the work material on the left side with respect to the traveling direction of the saw blade, etc. The scale size attached to the ruler plate that matches the standard part formed on the reading part is read, and by adding the interval size between the standard part and the saw blade from the read scale size, the work to be cut, etc. The width of the material, that is, the spacing dimension of the saw blade can be obtained from the guide end surface of the guide plate in the ruler plate.

In addition, when the guide plate of the ruler plate is located on the right side with respect to the traveling direction of saw blade cutting, etc., when performing the cutting work, read the scale size attached to the ruler plate that matches the reference part formed on the base. Then, by subtracting the distance between the reference portion and the saw blade from the read scale, the width of the workpiece to be cut, that is, the distance between the guide end surface of the guide plate and the saw blade in the ruler plate. Can be obtained.

This means that the guide plate of the ruler plate along the side surface of the work piece can be positioned on either the left side or the right side with respect to the cutting blade cutting direction to perform cutting work. In addition, the width of the workpiece to be cut at that time can be easily set by commonly using the scale attached to the ruler plate. Since the scale is read by the reference portion formed at a predetermined distance from the saw blade of the base, the scale can be read very clearly.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 4 is a cross-sectional view taken along the line B, and FIG. 4 is an explanatory view showing the dimension setting state of the ruler plate. 1: Circular saw 2: Base 5: Saw blade 12: Ruler plate 13: Guide plate 14: Scale 15: Reference part

Claims (1)

(57) [Scope of utility model registration request] 1. A ruler plate slidably arranged in a direction orthogonal to a traveling direction such as cutting of a saw blade with respect to a base of a circular saw, and an object to be cut provided on one end side of the ruler plate. A positioning device having a guide plate that comes into contact with a side surface of a processed material, wherein the surface of the ruler plate has a scale with a guide end face of the guide plate that comes into contact with the processed material as a zero reference, Is formed with a reference portion serving as a reference for reading the scale of the ruler plate at a predetermined distance from the saw blade, and the guide plates of the ruler plate with respect to the base are the right and left positions of the saw blade. When the guide plate is positioned on the right side of the saw blade, the size between the saw blade and the reference part is subtracted from the size of the scale read by the reference part. Scale read by the reference part when positioned to the left Positioning device in a portable circular saw configured as to addition of the dimension between the saw blade and the reference portion dimensioned to obtain the distance width between the guide plate and the saw blade.