JPH11160003A - Lever type dial gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent read errors and enable alignment or correcting of parallelism of a chuck of a workpiece, by making only a zero point on a dial of a gauge body limiting rotation of a pointer to a range smaller than one turn. SOLUTION: A scale 3 of only a zero point is displayed on a dial 2 of a gauge body 1. A measuring element 4 is set at a leading end of the gauge body 1 by a rotary shaft 5. A primary lever 6 is fixed to the rotary shaft 5 inside the gauge body 1. A rack at a leading end of the lever is adapted to rotate a pointer shaft of the dial 2 by less than one rotation in association with a small gear of the pointer shaft. Accordingly, rotation of a pointer 7 is limited to a range of less than one rotation. When the measuring element 4 is brought in touch with a workpiece, the pointer 7 can be agreed with the zero point immediately because the pointer 7 does not make one rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever type dial gauge in which a novel idea is conceived.

[0002]

2. Description of the Related Art A conventional lever-type dial gauge has a drawback that when the length of a stylus is changed, an enlargement ratio is changed, resulting in a deviation in accuracy.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to accurately and accurately align a workpiece with a chuck or to perform parallel alignment without misreading. It is an object of the present invention to provide a lever type dial gauge capable of measurement.

[0004]

The means of the present invention are as follows.

A lever type dial gauge in which the dial of the gauge body in which the rotation of the hands is limited to less than one rotation is provided with a scale of only one zero point.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a gauge body,
A scale 3 with only zeros is displayed on the dial 2. 4 is a rotating shaft 5
The probe is attached to the tip of the main body 1 by means of a main lever 6 fixed to the rotary shaft 5 inside the main body 1 (not shown).
And the rack at the tip is attached to the pointer shaft 8 of the dial 2.
And the pointer shaft is rotated by less than one rotation. That is, the rotation of the pointer 7 is limited to less than one rotation.

[0007]

When the tracing stylus is brought into contact with the tip of the workpiece A shown in FIGS. 2 and 3, the pointer 7 does not make one rotation, so that the pointer can be immediately adjusted to the zero point, and there is no mistake in reading. Also, as shown in FIG. 4, which is difficult to measure with a conventional lever-type dial gauge, when the depth of the tracing stylus does not reach or when the tip of the tracing stylus cannot be brought into contact with the measuring section (FIG. 4), By changing it to a longer one, the magnification can be measured without change.

[0008]

According to the present invention, since the pointer 7 does not make one rotation and the dial has only one zero point, even if the measuring element is made longer or the shape is freely changed according to the object to be measured. Unlike the conventional case, the enlargement ratio does not change, reading errors are prevented, and accuracy is not lost.

[Brief description of the drawings]

FIG. 1 is a plan view.

FIG. 2 is a perspective view showing a measurement state.

FIG. 3

FIG. 4 is a side view showing a measurement state.

[Explanation of symbols]

 1 Gauge body 2 Dial 3 Scale 4 Contact point 5 Rotary axis 6 Main lever 7 Pointer

Claims (1)

[Claims] 1. A lever type dial gauge in which the dial of the gauge body, in which the rotation of the hands is limited to less than one rotation, is provided with a scale of only one zero point.