Scale calibration method and drawing ruler capable of adjusting any proportion

An arbitrary scale and calibration method technology, applied in the field of scale, can solve the problems that affect the accuracy and intuition of graphics, take up too much time for the grid, time-consuming and labor-intensive, etc., and achieve the effect of easy measurement and use, clear correspondence, and improved drawing efficiency

Pending Publication Date: 2022-01-11
UNIV OF SHANGHAI FOR SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When drawing some graphics with strong three-dimensional sense such as axonometric diagrams or bird's-eye views, the drawing angle makes the sides of the graphics and the original length show various proportions of expansion and contraction. It is estimated that the drawing will affect the accuracy and intuitiveness of the graphics.
However, if each length is calculated proportionally, the more complex the graph, the larger the specification, the greater the amount of calculation, and it will take time and effort
At present, the commonly used methods for converting a plan view into a bird's-eye view are the grid method and the glass sheet copy method. The former takes too much time to draw the grid, and the latter requires more materials.

Method used

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  • Scale calibration method and drawing ruler capable of adjusting any proportion
  • Scale calibration method and drawing ruler capable of adjusting any proportion
  • Scale calibration method and drawing ruler capable of adjusting any proportion

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0024] Such as figure 1 Shown, be the similar triangle principle that the present invention is based on: when DE is parallel to BC, then have DE / BC=AE / AC;

[0025] In this principle, we can think that if BC is the standard unit length, then DE is the specified multiple of the standard unit length. This multiple can be changed arbitrarily with the distance between the DE line segment and point A. If DE is between A and BC , it is a reduction ratio. If DE is on the extension from A to BC, it is an enlargement ratio. Based on this theory, the present invention proposes a scale calibration method, such as figure 2 As shown in , multiple scale lines are drawn on the scale band 5; a scale scale is marked on the 0 scale line, and the scale scale is 1.0 as the standard scale; multiple scale lines a...

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Abstract

The invention provides a scale calibration method and a drawing ruler capable of adjusting any proportion. A plurality of scale lines are drawn on a proportion map based on the principle of similar triangles; a proportion scale is marked on the 0 scale line, and the proportion scale is 1.0 and serves as a standard proportion; the plurality of scale lines are arranged at equal intervals at any proportion; the distance between the adjacent scale lines is enlarged or reduced from the standard proportion position to the two ends according to the numerical value of the proportion scale; and the ratio of the distance between the two adjacent scale lines at the scale of any proportion to the distance at the standard proportion is the numerical value of the scale of the corresponding proportion; The continuous proportion transformation of the drawing ruler is achieved, the calculation link is omitted when a drawing is drawn, lines are drawn directly according to original size data, and the drawing efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of scales, in particular to a scale calibration method and a drawing scale with adjustable arbitrary scale. Background technique [0002] Most of the traditional measuring rulers are measuring rulers with a millimeter scale, and the scale scale cannot be adjusted. When drawing various design drawings, drawing to scale is a widely used method. When drawing some graphics with a strong three-dimensional effect such as axonometric drawings or bird's-eye views, the drawing angle makes the sides of the graphics and the original length show various proportions of expansion and contraction. It is estimated that the drawing will affect the accuracy and intuitiveness of the graphics. However, if the length of each line is calculated proportionally, the more complex the graphics and the larger the specifications, the greater the amount of calculation, which is time-consuming and labor-intensive. At present, the commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L13/10
CPCB43L13/10
Inventor 欧宝山张凯蓉王山山朱思征
Owner UNIV OF SHANGHAI FOR SCI & TECH
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