CN102967244A - Angle detection tool and detection method thereof - Google Patents

Abstract

The invention discloses an angle detection tool and a detection method thereof and belongs to the technical field of angle detection. The angle detection tool is simple and convenient to operate and low in cost. Components are irregular in shape and need measuring continuously in narrow and small space, and rotation angles of two components are measured in specific conditions of rotation around a fixed shaft and the like. The angle detection tool comprises a fixing device, and one end of the fixing device is connected with a screw through threads. The detection method using the angle detection tool includes that the fixing device is fixed on a fixing part of a measured component, so that the screw at one end of the fixing device is vertical to the upper surface of the fixing part of the measured component; the screw is rotated, so that the end portion of the screw is contacted with the rotating part of the measured component; the stretched length of the screw and the distance between the screw and a rotation shaft are read; and an included angle between the rotating part and the fixing part is determined according to an arc-tangent function.

Description

A kind of angle test measuring device and detection method thereof

Technical field

The invention belongs to the measurement of angle technical field, particularly relate to a kind of angle test measuring device and detection method thereof.

Background technology

In Engine Industry, the structure relative complex of part, assembling is also difficult, for the operation that needs to measure in assembling process sizable difficulty is arranged also.Arrive together for two Assembly of the parts, rotate around stationary shaft, the method for the rotational angle between two parts of continuous coverage has a lot, can use angle tracking measurement instrument, bevel protractor etc., it is large that but want in the space that needs, and the surface configuration of part is also had certain requirement.

Complicated for design of part, measurement space is narrow and small, and the part outside is blocked, the continuous coverage angle that part rotates around stationary shaft that is connected; Two parts are zero degree when fitting, and turn to α (angle code name) degree, in α degree scope, carry out one-shot measurement every certain angle from zero degree, need the number of times of measurement more, and need to begin to measure continuously from zero degree.Owing to be subjected to the restriction of space and continuous coverage requirement, can't measure angle value with existing measurement means.

Summary of the invention

For the problem that prior art exists, the invention provides a kind of easy and simple to handle, angle test measuring device and detection method thereof that cost is low.It is in small space, and External Shape is irregular, needs continuous coverage, and measures the angle that two parts rotate under the specified conditions such as stationary shaft rotation.

To achieve these goals, the present invention adopts following technical scheme, and a kind of angle test measuring device comprises stationary installation, and an end of described stationary installation is connected with screw rod by screw thread.

The length of stretching out for the ease of reading screw rod is provided with scale at described screw rod.

Adopt the detection method of described angle test measuring device, comprise the steps:

Step 1: stationary installation is fixed on the fixed part of tested part, makes the screw rod of stationary installation one end vertical with the upper surface of the fixed part of tested part;

Step 2: rotary screw makes the end of screw rod contact with the rotary part of tested part;

Step 3: read length that screw rod stretches out and screw rod apart from the distance of turning axle;

Step 4: determine angle between rotary part and the fixed part according to arctan function.

Principle of work of the present invention:

The present invention utilizes the trigonometric function principle, and the angle the measured arctan function by right-angle triangle is converted into length value, converts measurement of angle to measurement of length.

Beneficial effect of the present invention:

The invention solves the problem of small space continuous coverage angle, remedied the survey instruments such as angle tracking measurement instrument and bevel protractor and be subjected to space and design of part to limit immeasurable problem.It is simple in structure, and is easily manufactured, easy to operate, and development cost is lower.

Through evidence: the present invention can satisfy the requirement of measurement fully, realizes the conversion of angle and length, and its application has very high economic worth and practical value.

Description of drawings

Fig. 1 is the structural representation of casing and valve;

Fig. 2 is the structural representation that angle test measuring device of the present invention uses state;

Fig. 3 is that the A of Fig. 2 is to view;

Among the figure, 1-tested part, 2-turning axle, 3-rotary part, 4-fixed part, 5-stationary installation, 6-screw rod, 7-screw, 8-scale, 9-casing, 10-valve, N1-valve open mode, N2-valve closed condition.

Embodiment

Now be applied to measure valve opens in casing and the valve structure angle as example take the present invention, the present invention is described in further detail.

As shown in Figure 1, tested part is comprised of fixed part and rotary part, and rotary part is fixed on the fixed part by turning axle; That is: tested part is casing and valve structure, and fixed part is casing, and rotary part is valve, and valve is fixed on the casing by turning axle.During work, valve 10 is opened to the N1 open mode by the N2 closed condition around turning axle 2, needs measurer to measure valve 10 by 0 °, 3 °, 6 ° of the angles of N2 closed condition ... angle when the N1 open mode.

Such as Fig. 2, shown in Figure 3, a kind of angle test measuring device comprises stationary installation 5, and an end of described stationary installation 5 is connected with screw rod 6 by screw thread.The length of stretching out for the ease of reading screw rod 6 is provided with scale 8 at described screw rod 6.

Adopt the detection method of described angle test measuring device, comprise the steps:

Step 1: stationary installation 5 is fixed on the fixed part 4 of tested part 1 by screw 7, makes the screw rod 6 of stationary installation 5 one ends vertical with the upper surface of the fixed part 4 of tested part 1;

Step 2: rotary screw 6 makes the end of screw rod 6 contact with the rotary part 3 of tested part 1;

Step 3: read length that screw rod 6 stretches out and screw rod 6 apart from the distance of turning axle 2;

Step 4: determine angle between rotary part 3 and the fixed part 4 according to arctan function,

$\arctan =\frac{y}{x}=\mathrm{\α}$ ,

In the formula, y is the length that screw rod stretches out, x be screw rod apart from the distance of turning axle, α is the angle between rotary part and the fixed part.

The angle that the length transition that the present invention stretches out screw rod 6 becomes valve 10 to open, rotation along with valve 10, in the scope of 0～α degree, record at any time the length y that screw rod 6 stretches out, screw rod 6 is fixed value apart from turning axle 2 apart from x, thus according to the arctan function angle α between rotary part 3 and the fixed part 4 as can be known.

Claims (3)

1. an angle test measuring device is characterized in that comprising stationary installation, and an end of described stationary installation is connected with screw rod by screw thread.

2. a kind of angle test measuring device according to claim 1 is characterized in that being provided with scale at described screw rod.

3. adopt the detection method of angle test measuring device claimed in claim 1, it is characterized in that, comprise the steps:

Step 1: stationary installation is fixed on the fixed part of tested part, makes the screw rod of stationary installation one end vertical with the upper surface of the fixed part of tested part;

Step 2: rotary screw makes the end of screw rod contact with the rotary part of tested part;

Step 3: read length that screw rod stretches out and screw rod apart from the distance of turning axle;

Step 4: determine angle between rotary part and the fixed part according to arctan function.

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