JPS5822081Y2 - square ruler - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a right angle ruler.

Generally, when chamfering a workpiece, it is necessary to set the chamfer angle in advance, but in this case, conventionally the angle was set using a protractor, which made the work difficult and It was inefficient.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In Figures 1 to 4, the right angle ruler is the side leg 2 that forms a right angle.
and a vertical part 3, both of which are integrally molded.

According to the illustrated example, the outer part of the lateral leg part 2 (the left part in FIG. 4)
An inclined surface 4 having a predetermined angle θ is formed on the surface.

That is, the inclined surface 4 has an inclination angle θ of 30°, for example.
, 45°, etc., and this angle determines the chamfering angle of the workpiece by positioning the end face of the workpiece on this inclined surface.

A suitable scale 5 is attached to the edge of the inclined surface 4, and serves as a scale for measuring the length and thickness of the workpiece.

Note that the vertical portion 3 may also have the same configuration as the horizontal leg portion 2.

In addition, as shown in Figures 1.4, 5, and 6, the bottom side of the horizontal leg portion 2 is thinner in areas other than the width of the vertical portion 3, so the width of the vertical portion is thinner. The thick part protrudes and the thin part becomes a cutout part 6, and the ruler can be set at a predetermined position by a part of the corner with the thick part.

Next, how to use the square ruler 1 will be explained.

In FIGS. 7A to 7C, the base 11a of the vise 10 is
and 11b, lightly hold the workpiece 12, and then set the notch 6 on the ferrules 11a and 11b while aligning the inclined surface 4 of the right angle ruler 1 with the side end surface of the workpiece plate. The vertical part 3 is placed along the cap 11a as shown in FIG. 7C.

At this time, the right angle ruler 1
is stably positioned on b.

Thereafter, the processing plate 12 is tilted as appropriate, and the handle 13 is turned to firmly fix the processing plate with the side end surface of the plate 12 in a joined position on the inclined surface 4 as shown in FIG. 7A.

Then, as shown in FIG. 7A, the cutting machine 14 is
The corner portion 12a of the processing plate 12 is chamfered using the tip operating portion thereof.

At this time, the chamfer angle θ1 of the processed plate 12 matches the inclination angle θ of the inclined surface 4.

Therefore, by simply applying the side end surface of the processing plate 12 to the inclined surface 4, a predetermined chamfering angle can be easily set, and the chamfering work is also facilitated.

Note that during the chamfering work, the thickness of the processed plate 12 can be measured using the scale 5 on the inclined surface 4 of the square ruler 1.

If the workpiece is bent at a right angle, the square ruler 1 can also be used to measure the accuracy of the right angle.

That is, in FIG. 8A t 88, the vertical part 15a of the processed plate 15 bent at a right angle is inserted into the base 11a of the vise 10,
11b and fix the scaler 1 to the caps 11a and 1i.
b, and align the horizontal leg portion 2 with the horizontal portion 15b.

At this time, as shown in FIG. 8A, if the horizontal leg part 2 of the skater 1 matches the side end surface 15c of the horizontal part 15b of the processed plate 15, the horizontal part and the vertical part 15a of the processed plate are correctly bent. It can be seen that

However, when the lateral leg portion 2 is not joined to the side end surface 15c of the horizontal portion 15b and a gap is created, it can be seen that the horizontal portion and the vertical portion 15a are bent in a twisted state.

In this case, the processed plate 15 becomes an unsuitable product.

As explained above, according to the present invention, it is possible to easily perform chamfering work on a workpiece with a simple configuration, and to improve the efficiency of the chamfering work.

In addition, the accuracy of the bending angle of the workpiece can be easily determined, and the ruler can be set accurately at a predetermined position by using the notch in the thin part of the top part and part of the corner of the thick part. The practical effects are significant.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line ■■ in FIG. IV line sectional view, Figure 5 is Figure 3 V-
v-line sectional view, Figure 6 is the 1st VI-VI sectional view, 7th
7A is a front view, FIG. 7B is a plan view, FIG. 7C is a sectional view taken along line 7A and 8A. FIG. 8B is a drawing showing another example of use, in which FIG. 8A is a plan view and FIG. 8B is a sectional view taken along the line ■--■ in FIG. 8A. 2... Lateral foot part, 3... Longitudinal part, 4...
... Slanted surface for chamfering, 5 ... Scale, 6 ...
...Positioning notch, 12.15...Workpiece, θ...Inclination angle of inclined surface.

Claims (1)

[Claims for Utility Model Registration] l) A transverse foot portion and a vertical portion forming a right angle are integrally formed, and an inclined surface for chamfering at a predetermined angle is formed on the outer side of at least one foot portion; Make one of the feet or the vertical part thicker, and make the other foot thinner in areas other than the width of this one foot, and place a ruler at the bottom of the other foot. A right angle ruler characterized by having a notch formed therein for setting. 2) Utility model registration Claim 1) The right angle ruler characterized in that the inclined surface is provided with a scale.