JPH03125901A - Measuring jig for warp of strip material - Google Patents

Abstract

PURPOSE:To enable improvement of precision and execution of quick measurement by providing iron pins at two points of reference positions of a base for measurement and by embedding a scale for reading a numerical value in the central part of a straight line connecting the two points of reference positions. CONSTITUTION:A iron scale 6 for reading a numerical value is embedded in a slender base 2 for measurement made of a polyvinyl chloride resin plate, while iron pins 5 for setting bases are disposed at two points of reference positions in the opposite ends of the base 2, and the scale 6 is so disposed as to be vertical to a straight line connecting the two pins 5, at the center of this straight line. The opposite ends of a strip material 1 to be measured are pressed on the pins 5, the division of the scale 6 on the straight line connecting the two points of the reference positions is taken as a reference position, and the division of the scale at a point whereat the strip material 1 intersects the scale 6 is measured by using a magnifier 7. According to this constitution, the amount of warp can be measured precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a jig for measuring bending occurring in a strip.

(Prior art) As shown in Fig. 3, bending of a strip means that the strip 1 is bent only in one direction relative to the rolling direction and in the plane direction (width direction) with the side end of the strip as a reference. In the case of a zero-strip material, which curves in a straight line, such bending is likely to occur during slitting processing or stamping processing.

Various jigs for measuring the bending of strips have been proposed in the past. For example, in the measurement jig shown in FIG.
, press the measuring strip 1 against the thin plate 3, and press the thin plate 3.
The gap t between the strip material 1 and the strip material 1 is measured using a numerical reading scale 4. This gap t is measured as the amount of bending. According to this method, the amount of bending can be easily and accurately measured by pressing the object to be measured against a thin iron plate.

(Problems to be Solved by the Invention) However, according to the measurement jig of the known technology as described above, the dimensional accuracy is poor because the thin iron plate is long and thin.
Due to warpage of the thin plate, a gap may be created between the base of the enbi plate and the thin steel plate, and the object to be measured may be caught between them.
In practice, there were various problems.

The present invention aims to solve these problems of the prior art.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a jig for measuring the bending of surplus materials, which includes a measurement base made of a long and narrow embedded board, and a step on the measurement base. A squared iron school for reading numbers, reference pins installed at the first and second reference positions located at both ends of the measurement base, and a magnifying glass to enlarge the scale of the scale for reading numbers. The numerical reading scale is embedded in the measurement base in a direction perpendicular to the straight line at the center of the straight line connecting the first reference position and the second reference position, and The surface of the scale for reading numerical values was made to be on the same surface.

(Function) In the strip bending measuring jig according to the present invention, a straight line connecting the first and second reference positions arranged at both ends of the measurement base serves as a reference line, and a line perpendicular to this reference line The deviation becomes the reading value.

Therefore, in the strip bending measuring jig according to the present invention,
Since the numerical reading scale is placed perpendicularly to the straight line connecting the first and second reference positions, the scale of the numerical reading scale on the straight line connecting the first and second reference positions is set as the reference position. The amount of bending can be measured using the scale at the point where the strip of the non-measurable object intersects the numerical reading scale.

In addition, since the numerical value reading scale is placed at the center of the straight line connecting the first reference position and the second reference position, the scale for reading the numerical values is placed at the center of the strip of the object to be measured with both ends pressed against the reference pin. The maximum distance from the reference line can be measured.

Furthermore, in the strip bending measuring jig according to the present invention, since the numerical value reading scale is embedded in the measuring base, the non-measurable strip can be smoothly placed on the measuring base and the numerical reading scale. Can be moved.

Additionally, since the graduations of the numerical reading scale are measured with a magnifying glass, the measurement accuracy is increased.

Thus, with the strip bending measuring jig according to the present invention, the dimensional accuracy of the measurement reference position is improved, there is little error in setting the reference due to pressing of the object to be measured, and rapid and accurate measurement is always possible.

In addition, in the strip bending measuring jig according to the present invention, an iron scale with graduations carved on only one side is used for the numerical reading scale, and the reason for this is that the iron scale has higher heat resistance than plastic etc. This is because the scale is difficult to lose due to oil, etc., so accuracy can be maintained.

(Example) An example of a jig for measuring bending of a strip according to the present invention will be described with reference to the drawings.

FIG. 1a is a perspective view showing a jig for measuring bending of a strip according to an embodiment of the present invention.

The bending measurement jig for a strip in this embodiment includes a measurement base 2 made of a long and narrow engraving plate, a numerical reading scale 6 made of iron installed on the measurement base 2, and scales 6 placed on both ends of the measurement base 2. It is comprised of iron reference pins 5 installed at first and second reference positions, respectively, and a magnifying glass 7 for enlarging the graduations of a numerical reading scale 6.

The numerical value reading scale 6 is embedded in the measurement base 2 in a direction perpendicular to the straight line at the center of the straight line connecting the first reference position and the second reference position. The scale 6 is installed at the center of a straight line connecting the two reference pins 5 in a direction perpendicular to the straight line. Therefore, the surface of the measurement base 2 and the surface of the numerical reading scale 6 are on the same surface.

FIG. 1b is a plan view showing a place where a strip 1 to be measured cut into a sheet shape is placed in a strip bending measuring jig according to an embodiment of the present invention.

Both ends of the strip 1 are pressed against the reference pins 5, respectively. Since the reference pins 5 are located at the first and second reference positions arranged at both ends of the measurement base 2, both ends of the strip 1 pressed there serve as measurement references. Since the distance between these two reference pins 5, that is, the interval between the first and second reference positions, is set at 1 m,
The bending of the strip 1 will be done in measurements per meter.

After the strip 1 is arranged as shown in FIG. 1b, the numerical difference from the standard value can be measured through a magnifying glass 7 using an iron numerical reading scale 6 as the amount of bending. That is, since the numerical value reading scale 6 is arranged perpendicularly to the straight line connecting the first and second reference positions, the numerical value reading scale 6 is placed on the straight line connecting the first and second reference positions. Using the scale 6 as a reference position, the scale at the point where the strip 1 of the non-measurable object intersects the numerical reading scale 6 can be measured as the amount of bending.

By setting the magnification of the magnifying glass 7 to 10 times, it is possible to perform measurements with higher precision than in the past.

(Effects of the Invention) According to the jig for measuring bending of a strip according to the present invention, iron pins are installed at each of the reference positions located at both ends of the measurement base made of a long and narrow engraving plate, and the reference position is Set a steel numerical reading scale in the center of a straight line connecting two points in a direction perpendicular to the straight line, embedding it in the measuring base so that it is flush with the surface of the measuring base, Because it is equipped with a magnifying glass to enlarge it,
It has become possible to improve measurement accuracy and perform measurements quickly, which has made it possible to improve detection accuracy and reduce inspection work man-hours. Therefore, according to the present invention, it has become possible to supply an excellent strip material with high reliability and low product cost.

[Brief explanation of the drawing]

FIG. 1a is a perspective view of a jig for measuring bending of a strip according to the present invention. FIG. ib is a plan view showing a strip of the object to be measured placed on the bending measuring jig shown in FIG. 1a. FIG. 2 is a perspective view of a conventional strip bending measuring jig. FIG. 3 is a plan view illustrating the bent state of the strip. In the figure, reference numbers indicate the following elements. 1... Strip material 2... Measurement base 3... Thin plate for reference setting 4... Scale for reading numerical values 5... Pin for reference setting 6... Scale for reading numerical values... Magnifying glass

Claims (1)

[Claims] A bending measuring jig for measuring the bending of a strip includes a measuring base made of a long and narrow plate, a steel numerical reading scale installed on top of the measuring base, and first and second scales placed at both ends of the measuring base. It is equipped with a reference pin installed at each of the second reference positions and a magnifying glass for enlarging the scale of the numerical reading scale, and at the center of the straight line connecting the first reference position and the second reference position, Measurement of bending of a strip, characterized in that the numerical reading scale is embedded in a measuring base in a direction perpendicular to the straight line, so that the surface of the measuring base and the surface of the numerical reading scale are flush with each other. jig.