JPH0734325Y2 - Right angle measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a right angle measuring device which is placed on a smooth surface to measure a right angle surface of a work.

2. Description of the Related Art An example of a conventional right-angle measuring device will be described with reference to FIGS. 8 and 9. This measuring device consists of a reference block 1 mounted on a base and a contact block 2 which is brought into contact with the measurement surface of a work.
Is integrally fixed. The reference surface with respect to the base, which is the bottom surface of the reference block 1, and the reference surface 3 with respect to the measurement surface, which is the side surface of the contact block 2, are smooth surfaces. Further, they are assembled so that their reference planes form a right angle.

On the other hand, at the time of measuring the work, the right angle measuring device and the work 5 are placed on the base 4 having a smooth surface, and the measurement surface of the work 5 and the reference surface 3 are brought into contact with each other. The squareness of the measurement surface is measured by visually measuring the state. That is, the measurement surface of the work 5 and the reference surface 3
The squareness of the measurement surface is measured by visually observing the degree of the gap formed between and.

Problems to be Solved by the Invention As described above, all right angle measurements are performed by eye. However, as described above, the size of the gap is extremely small, and it is difficult to accurately measure the size of the gap. Therefore, not only the skill is required for the measurement, but even if a skilled person performs the measurement, it is impossible to quantify the squareness of the measurement surface and know it. On the other hand, for the skilled person, the structure shown in FIGS. 8 and 9 of the related art is not inconvenient, and rather the handling is easy.

Means for Solving the Problems An L-shaped block having a reference side having a smooth reference surface and a measurement side orthogonal to the reference side is provided, and a smooth surface positioned in a plane perpendicular to the reference surface is provided. And a recess formed by leaving a smooth contact surface located in a plane perpendicular to the reference surface at the top close to the reference surface. Are provided in parallel with each other along the longitudinal direction of the measurement side, a filler is projected in the recess, and a dial gauge is attached to the measurement side.

By using only the measurement ridges on the measurement side, it is possible to use exactly the same simple operation as a conventional right-angle measuring instrument, and it is easy for an expert to use. It is possible to know the squareness numerically with a dial gauge, so that even an unskilled person can accurately calculate the squareness, and it is necessary to know numerically whether it is enough to know the degree of the squareness. There are two functions that can be selected arbitrarily.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 7. The right angle measuring instrument in this embodiment is provided with an L-shaped block 8 having a reference side 6 and a measuring side 7, and the measuring side 7 is divided into a measuring ridge 9 and a concave portion 10 in the longitudinal direction. They are formed in parallel, and the dial gauge 11 is provided in the recess 10.
Is attached.

The reference side 6 has a smooth reference surface 12, and the measurement ridge 9 of the measurement side 7 is provided orthogonal to the reference surface 12. The measuring ridge 9 has a smooth contact surface 13 orthogonal to the reference surface 12. Further, the measuring side 7 is provided with a mounting hole 14 for mounting the dial gauge 11 on its side surface, and a pressing hole 15 for fixing the dial gauge 11 after mounting is connected to the mounting hole 14 on the front side. It is provided in. The two types of holes are provided in the vertical direction so that the filler 16 of the dial gauge 11 is attached to the contact surface 13 at a right angle.

The L-shaped block 8 formed as described above has a second
The dial gauge 11 is mounted as shown in FIGS. This dial gauge 11 has an optional mounting hole.
It is fixed after being attached to 14. That is, the filler 16 and the stem 17 are inserted into the arbitrary mounting holes 14 in the direction of the contact surface 13. Then, a push screw 18 is screwed into the push hole 15 communicating with the selected mounting hole 14, and the push screw 18 is tightened to tighten the stem.
The dial gauge 11 is fixed by pressing the dial 17.

As shown in FIGS. 4 and 5, the push screw 18 has a bottomed hole 19 and a claw 20 formed at one end, and a knob 27 formed at the other end. The pressing body 22 is inserted through the ball 21, the claw 20 is deformed, and the pressing body 22 is rotatably pressed. Therefore, the set screw
Even when tightening 18 and pressing the stem 17, the pressing body 22 does not rotate, so that the dial gauge 11 can be fixed without damaging the stem 17.

In such an arrangement, to make a right angle measurement, one of the mounting holes 14 is selected and the dial gauge 11 to be mounted in this mounting hole 14 is adjusted. That is, the mounting hole 14 is selected so that the filler 16 contacts the highest position of the work. After this, however, as shown in FIG. 6, the abutting surface 13 is joined to the base 23 and the measuring instrument is placed on the base 23 having a smooth surface, and the filler 16 is slightly attached to the base 23. Fix the dial gauge 11 in the pressed state. At this time, since the filler 16 is pressed against the base 23,
The needle 24 of the dial gauge 11 is in a rotated state. In order to correct this, the dial gauge 11 is adjusted by matching the 0 position of the scale 25 with the position of the needle 24 by utilizing the rotation of the scale 25. At this time, since the contact surface 13 is smooth, it is possible to determine whether or not dust or the like is present between the contact surface 13 and the base 23 in a ringing state with the base 23. The dial gauge 11 is not adjusted in a perfect state.

Then, in order to measure a right angle, as shown in FIG. 7, the reference surface 12 and the base 23 are joined to each other on the base 23, and the measuring instrument is placed on the base. The measurement surface of 26 is brought into contact with the workpiece 26 and the workpiece 26 is positioned at the position of the recess 10. That is, the dial gauge 11 adjusted to display 0 when the contact surface 13 and the filler 16 are in the same plane,
The movement amount of the filler 16 that changes according to the squareness of the measurement surface is displayed as a numerically measured value. Of course, if the entire contact surface 13 is used, it can be used in the same manner as a normal square.

When measuring a work having a height higher than that of the measurement ridge 9, the fact that the width of the measurement ridge 9 is narrow is used to avoid the measurement ridge 9 and to lower the measurement surface of the work. The contact surface 13 is brought into contact. Also, when measured in this way,
The measured value displayed on the dial gauge 11 is corrected and read. That is, when the workpiece and the filler 16 have the same height, the squareness of the measurement surface and the measurement value of the dial gauge 11 correspond to each other in a 1: 1 relationship. So, for example, base 2
In the case of measuring a work having a double height from 3 to the filler 16, double the measured value displayed on the dial gauge 11 is a value indicating the actual squareness. By making such a correction, the squareness of works of various heights can be easily known as a numerically measured value.

Effect of the Invention As described above, the present invention is provided with an L-shaped block having a reference side having a smooth reference surface and a measurement side orthogonal to the reference side, and is provided in a plane perpendicular to the reference surface. A strip of measurement ridge having a smooth abutment surface located and a smooth abutment surface located in a plane perpendicular to the reference plane partially left on the top close to the reference plane. Since the concave portion and the concave portion are provided in parallel with each other along the longitudinal direction of the measuring side and the filler is projected into the concave portion and the dial gauge is attached to the measuring side, only the measuring ridge on the measuring side can be used. It can be used in exactly the same simple way as the right-angle measuring device of, and can be used easily by a skilled person, and if the concave side of the measurement side is used, the squareness can be known numerically with a dial gauge. This makes you skilled The effect is that even a person who does not have this can accurately calculate the squareness, and whether two functions can be arbitrarily selected depending on whether it is necessary to know the degree of the squareness or whether it is necessary to know it numerically. Have.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of an L-shaped block as seen from the bottom, FIG. 2 is an exploded perspective view, and FIG. 3 is a sectional view of a part of a dial gauge mounting portion. FIG. 4 is a plan view, FIG. 4 is an exploded sectional view of the push screw, FIG. 5 is a side view in which a part of the push screw is shown in cross section, FIG. 6 is a front view showing a dial gauge adjusting method, and FIG. FIG. 8 is a perspective view showing a conventional example, and FIG. 9 is a front view showing its usage state. 6 ... Reference side, 7 ... Measuring side, 8 ... L-shaped block,
9 ... Measuring ridge, 10 ... Recess, 11 ... Dial gauge,
12 …… reference surface, 13 …… contact surface, 16 …… filler

Claims (1)

[Scope of utility model registration request] 1. An L-shaped block comprising a reference side having a smooth reference surface and a measurement side orthogonal to the reference side, and a smooth contact located in a plane perpendicular to the reference surface. The measurement of a single measurement ridge having a surface and a recess formed by partially leaving a smooth contact surface located in a plane perpendicular to the reference surface at the top close to the reference surface A right angle measuring instrument, characterized in that they are provided parallel to each other along a longitudinal direction of a side, a filler is projected in the concave portion, and a dial gauge is attached to the measuring side.