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Large circular arc radius measuring instrument and measuring method

A technology of radius measurement and large arc, which is applied in the field of large arc radius measuring instrument and measurement, and can solve the problem of not being able to know the value of the arc radius

Inactive Publication Date: 2010-09-29
CHINA RAILWAY LONGCHANG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The large arc radius measurement actually used at present uses the comparison of arc templates, which can only determine whether the measured arc is within the expected range, but cannot know the value of the arc radius.

Method used

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  • Large circular arc radius measuring instrument and measuring method
  • Large circular arc radius measuring instrument and measuring method
  • Large circular arc radius measuring instrument and measuring method

Examples

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Embodiment Construction

[0018] A large arc radius measuring instrument, such as figure 2 As shown, it includes: main ruler 1, vernier ruler 2, main ruler probe 3, vernier ruler probe 4, and measuring foot 6.

[0019] The main ruler 1 is a ruler with a scale, and its head is a main ruler measuring head 3, which is spherical in shape and used to contact the surface of the measured arc.

[0020] The vernier ruler 2 is used as a vernier, and its shape is T-shaped, including a horizontal section and a vertical section. The vertical section is located on the vertical bisector of the horizontal section. At both ends of the horizontal section of the scale 2, a measuring foot 6 is vertically arranged relative to the horizontal section. The end of the measuring foot 6 is a vernier measuring head 4, which is spherical in shape and used to contact the surface of the measured arc.

[0021] In order to obtain the measurement results in time during the measurement, the vernier ruler 2 can also use the existing li...

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Abstract

The invention discloses a large circular arc radius measuring instrument and a measuring method, wherein the measuring instrument comprises a main scale; the head of the main scale is a main scale measuring head in a spherical shape; a T-shaped vernier is sleeved on the main scale, the vernier comprises a horizontal segment and a vertical segment, the vertical segment is positioned on the vertical bisector of the horizontal segment, and the vertical segment is sleeved outside the main scale and can slide relative to the main scale; and measuring feet are vertically arranged at both ends of the horizontal segment of the vernier relative to the horizontal segment, and the end part of each measuring foot is a vernier measuring head in a spherical shape. The invention has the advantages that through the sliding fit of the main scale and the vernier, the spherical measuring heads of the main scale and the vernier can well contact a measured circular arc, and the chord height of the measured circular arc is conveniently measured, thereby computing the circular arc radius according to a formula; the instrument has simple structure and easy production and manufacture, and the measuring method is simple and rapid.

Description

technical field [0001] The invention relates to a large arc radius measuring instrument and a measuring method. Background technique [0002] The large arc radius measurement actually used at present uses the arc template comparison, which can only determine whether the measured arc is within the expected range, but cannot know the arc radius value. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a large arc radius measuring instrument and a measuring method. The instrument has a simple structure, is easy to produce and manufacture, and the measuring method is simple and quick. [0004] The technical solution adopted by the present invention to solve the technical problem is: a large arc radius measuring instrument, comprising a main scale, the head of the main scale is a main scale measuring head, and the shape is spherical; the main scale is covered with T-shaped vernier ruler, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/08
Inventor 邓超云张栋
Owner CHINA RAILWAY LONGCHANG MATERIALS
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