CN103162598A - Method and device for measuring curvature radius - Google Patents

Abstract

The invention is applicable to the technical field of measuring instruments and provides a method and a device for measuring a curvature radius. The method for measuring the curvature radius includes the steps: opening a measuring appliance; pressing a steel ruler close to an arc of an object to be measured; and reading the included angle between a first plumbing bar and a telescopic rope to obtain the curvature radius. By the aid of the elastic steel ruler, the included angle between the first plumbing bar and the telescopic rope is read, and the curvature radius is calculated according to a formula. In addition, the device is simple in structure, convenient to use and light in weight, and effectively solves the problems that the curvature radius of the arc of the object to be measured is inaccurately measured, and a measuring appliance is inconvenient to use in the prior art. Besides, the device is convenient to operate, low in manufacturing cost, accurate in measuring result and fine in practical application value.

Description

A kind of measuring method of radius-of-curvature and measurement mechanism

Technical field

The invention belongs to the surveying instrument technical field, relate in particular to a kind of measuring method and measurement mechanism of radius-of-curvature.

Background technology

At present, for the radius of curvature measurement of measuring thing band radian, adopt and measure diameter, draw radian by the method for calculating, or measure by some simple utensils, but the result of existing measurement approach is inaccurate, for production has brought inconvenience, the quality that is unfavorable for product improves, and existing measuring appliance uses inconvenience in addition, has affected people's use.

Summary of the invention

The purpose of the embodiment of the present invention is to provide a kind of measuring method and device of radius-of-curvature, is intended to solve existing to the inaccurate and awkward problem of measuring appliance with the radian radius of curvature measurement of measuring thing.

The embodiment of the present invention is achieved in that a kind of measuring method of radius-of-curvature, and the measuring method of described radius-of-curvature comprises the following steps:

Measuring appliance is opened;

Steel ruler is pressed close to the bent arc of required measurement thing;

Read the first plumbing bar and the flexible angle number of degrees of restricting, draw radius-of-curvature.

Further, the measuring method of described radius-of-curvature also comprises external radius measuring method and inside radius measuring method.

The step that further, described external radius measuring method is concrete is:

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar and flexible rope angle angular readings α (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(90-\mathrm{\α})}.$

The step that further, described inside radius measuring method is concrete is

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar and flexible rope angle angular readings β (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(\mathrm{\β}-90)}.$

Another purpose of the present invention is to provide a kind of measurement mechanism of radius-of-curvature, and the measurement mechanism of described radius-of-curvature comprises: steel ruler, the first plumbing bar, the first hinge, the second plumbing bar, the second hinge, protractor, flexible rope; Described steel ruler is arranged on the bottom of described measurement mechanism, and described the first plumbing bar and the second plumbing bar are arranged on the both sides of described steel ruler, and described protractor is arranged on described the first plumbing bar, and described the first plumbing bar connects described the second plumbing bar.

Further, described the first plumbing bar is arranged on steel ruler by the first hinge.

Further, described the second plumbing bar is arranged on steel ruler by the second hinge.

Further, described the first plumbing bar connects the second plumbing bar by flexible rope.

Further, described steel ruler is for being with flexible stainless steel.

Description of drawings

Fig. 1 is the realization flow figure of the measuring method of the radius-of-curvature that provides of the embodiment of the present invention;

Fig. 2 is the structural representation of the measurement mechanism of the radius-of-curvature that provides of the embodiment of the present invention.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.

As shown in Figure 1, the measuring method of the radius-of-curvature of the embodiment of the present invention comprises the following steps:

S101: measuring appliance is opened;

S102: the bent arc of steel ruler being pressed close to required measurement thing;

S103: read the first plumbing bar and the flexible angle number of degrees of restricting, draw radius-of-curvature;

The concrete measuring method of the embodiment of the present invention is:

1, external radius measuring method, step is as follows:

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar 2 and flexible rope 5 angle angular readings α (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(90-\mathrm{\α})};$

2, inside radius measuring method, step is as follows:

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar 2 and flexible rope 5 angle angular readings β (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(\mathrm{\β}-90)};$

As shown in Figure 2, the measurement mechanism of the radius-of-curvature of the embodiment of the present invention mainly is comprised of: steel ruler 1, the first plumbing bar 2, the first hinge 21, the second plumbing bar 3, the second hinge 31, protractor 4, flexible rope 5, steel ruler 1 material of the present invention: elastic stainless steel, thickness: 1-3mm, length can be made as required; The first plumbing bar 2 and the second plumbing bar 3 materials adopt batten or unit of plastic to make, length: 200mm-L/2; 0.1 ° of protractor 4 precision, scope: 0-180 °; The first plumbing bar 2 and the second plumbing bar 3 can rotate by the first hinge 21 and the second hinge 31, the receipts superimposition of implementation tool launches, when instrument launches, the first plumbing bar 2 is vertical with steel ruler 1 with the second plumbing bar 3, the first plumbing bar 2 and the second plumbing bar 3 are in bending radially when steel ruler 1 is crooked, in use, the first plumbing bar 2 and the second plumbing bar 3 are holded up, steel ruler 1 is attached to be needed to measure on the arc of thing, then read the angle number of degrees of the first plumbing bar 2 and flexible rope 5, calculate radius-of-curvature according to formula and get final product.

The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.

Claims (9)

1. the measuring method of a radius-of-curvature, is characterized in that, the measuring method of described radius-of-curvature comprises the following steps:

Measuring appliance is opened;

Steel ruler is pressed close to the bent arc of required measurement thing;

Read the first plumbing bar and the flexible angle number of degrees of restricting, draw radius-of-curvature.

2. the measuring method of radius-of-curvature as claimed in claim 1, is characterized in that, the measuring method of described radius-of-curvature also comprises external radius measuring method and inside radius measuring method.

3. the measuring method of radius-of-curvature as claimed in claim 2, is characterized in that, the step that described external radius measuring method is concrete is:

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar and flexible rope angle angular readings α (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(90-\mathrm{\α})}.$

4. the measuring method of radius-of-curvature as claimed in claim 2, is characterized in that, the step that described inside radius measuring method is concrete is:

Step 1: instrument is launched;

Step 2: steel ruler is close to measured object along the bent arc of required measurement;

Step 3: read the first plumbing bar and flexible rope angle angular readings β (°);

Step 4: computation and measurement radius-of-curvature

$R=\frac{90L}{\mathrm{\π}(\mathrm{\β}-90)}.$

5. the measurement mechanism of a radius-of-curvature, is characterized in that, the measurement mechanism of described radius-of-curvature comprises: steel ruler, the first plumbing bar, the first hinge, the second plumbing bar, the second hinge, protractor, flexible rope;

Described steel ruler is arranged on the bottom of described measurement mechanism, and described the first plumbing bar and the second plumbing bar are arranged on the both sides of described steel ruler, and described protractor is arranged on described the first plumbing bar, and described the first plumbing bar connects described the second plumbing bar.

6. the measurement mechanism of radius-of-curvature as claimed in claim 5, is characterized in that, described the first plumbing bar is arranged on steel ruler by the first hinge.

7. the measurement mechanism of radius-of-curvature as claimed in claim 5, is characterized in that, described the second plumbing bar is arranged on steel ruler by the second hinge.

8. the measurement mechanism of radius-of-curvature as claimed in claim 5, is characterized in that, described the first plumbing bar connects the second plumbing bar by flexible rope.

9. the measurement mechanism of radius-of-curvature as claimed in claim 5, is characterized in that, described steel ruler is for being with flexible stainless steel.

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