Rapid and accurate multipurpose drawing instrument

Abstract

A rapid and accurate multipurpose drawing instrument comprises a fixed straight ruler and a protractor. The rapid and accurate multipurpose drawing instrument is characterized in that the rapid and accurate multipurpose drawing instrument is further provided with a parallel line four-bar mechanism, a vertical line mechanism, an arc sliding block mechanism and a scale pointer which are connected with the fixed straight ruler and the protractor into a whole; the scale pointer is connected with the center of the fixed straight ruler and rotates by 360 degrees with the connecting point as the center; and the arc sliding block mechanism is arranged on the back face of the vertical line mechanism, and the parallel line four-bar mechanism is connected with the bottom of the vertical line mechanism and the bottom of the arc sliding block mechanism and connected with the vertical line mechanism and the arc sliding block mechanism into a whole in a folding manner. The rapid and accurate multipurpose drawing instrument has the beneficial effects that due to the fact that the straight ruler, the protractor, a set square, a T square, compasses and the three newly-designed mechanisms are combined into a whole, carrying is convenient, and through function combining, parallel lines, vertical lines, arcs, halving lines and the like can be rapidly and accurately drawn according to the given size; and conversion of different tools during drawing is reduced, and the drawing efficiency is improved.

Description

technical field [0001] The invention relates to a drawing tool, in particular to a fast and accurate multipurpose plotter. Background technique [0002] With the popularity of computer drawing software, some people mistakenly believe that computer-aided drawing can replace hand drawing. Moreover, with the development of multimedia teaching equipment, many courses use multimedia teaching, which greatly improves the teaching effect of some courses. However, the application results of these teaching methods in geometry, descriptive geometry, mechanical drawing, etc. Teachers teach and demonstrate stroke by stroke in the classroom. Therefore, when people study geometry, drawing, industrial design and other courses, they lack the training of hand drawing, and their understanding and mastery of the concept of drawing knowledge is not high. Therefore, in recent years, the teaching of these courses has paid more and more attention to the teaching of teachers' classroom hand drawing...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of low accuracy in drawing parallel lines, vertical lines, circles and arcs, cumbersome operation steps and low efficiency when using existing drawing tools, the present invention prov

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