JPS6111602Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an R gauge for measuring the R surface of an object to be measured.

Conventionally, as shown in FIG. 4, the gauge surface B of the generally used R gauge A has a constant arc length (R angle), so for example, as shown in the same figure,
When both ends of the R surface Wa of the object to be measured W are continuous with two linear surfaces having a predetermined angle, this R
Surface Wa cannot be measured. That is, the object to be measured W
Even if the radius of curvature of the gauge surface B is the same as that of the R surface Wa, if the length of the arc is different, the R surface Wa may not be able to be measured, or the measurement accuracy may be lacking. Therefore, in order to accurately measure multiple (many) R surfaces with different arc lengths,
A corresponding number of R gauges must be manufactured, and when measuring the R surface, one must search for an R gauge with a gauge surface corresponding to the R surface from among multiple (many) R gauges. There was a drawback that the R surface had to be measured by pulling it out.

In view of the above reasons, the purpose of this invention is to use one R gauge to create multiple R gauges with different arc lengths.
An object of the present invention is to provide an R gauge that can easily and accurately measure surfaces.

The feature of this invention is that gauge surfaces with the same radius of curvature and different arc lengths are formed at the tips of multiple blades formed radially around the outer circumference of the gauge plate and at the bottom between adjacent blades. It is in the place where each is formed.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

A plurality of (five in FIG. 1) blades 1a to 1e are radially formed at predetermined intervals on the outer periphery of a gauge plate 1 having a predetermined thickness. The blade angles θ1 to 5 of each of these blades 1a to 1e are formed at different angles, for example, 30°, 45°, 60°, 75°, and 90°, and the tips of each of the blades 1a to 1e are A plurality of first gauge surfaces 2a to 2e having the same radius of curvature and different arc lengths (R angles) are formed on the surface. In this embodiment, the center points of the arcs of the first gauge surfaces 2a to 2e are located at the same circumferential peak.

A plurality of second gauge surfaces 3a to 3e having the same radius of curvature as the first gauge surfaces 2a to 2e and necessarily different arc lengths are formed at the bottom between each of the adjacent blades, respectively. , these second gauge surfaces 3a~
Both ends of the arc of e are continuous with the straight line surfaces of the adjacent wing pieces.

In the above configuration, as shown in FIG. By means of the plurality of first gauge surfaces 2a to 2e formed at the tips of the pieces 1a to 1e, it is possible to easily and accurately measure the R surface of each portion from the upper end to the lower end of the measurement surface Wa.

Furthermore, as shown in FIG. 3, when defining an R surface Wa on the object W to be measured whose both ends are continuous with two linear surfaces having a predetermined angle, the space between adjacent blades of the gauge plate 1 is One gauge surface 3 among the plurality of second gauge surfaces 3a to 3e formed at the bottom of the
By selecting c, the R plane Wa can be easily and accurately measured.

In other words, this invention makes it possible to easily and accurately measure multiple (many) R surfaces with different arc lengths by forming gauge surfaces at the tips and bottoms of each blade of the gauge plate. This makes it possible to improve the R-plane measurement work.

[Brief explanation of the drawing]

Figures 1 to 3 of the drawings show an embodiment of this invention, and Figure 1 is a front view showing an R gauge;
FIGS. 2 and 3 are explanatory diagrams showing the usage state of the R gauge, respectively, and FIG. 4 is a front view showing the conventional R gauge. 1... Gauge plate, 1a-e... Wing piece, 2
a to e: first gauge surface, 3a to e: second gauge surface, W: object to be measured, Wa: R surface.

Claims (1)

[Scope of utility model registration request] A plurality of blades are formed radially around the outer circumference of the gauge plate, and gauge surfaces with the same radius of curvature and different arc lengths are formed at the tips of these blades and the bottom between adjacent blades. R gauge featuring.