multifunction ellipsometer

Abstract

The invention discloses a multifunctional ellipsograph which comprises a main locating seat, a four-rod mechanism, a cylindrical gear planetary transmission mechanism, an involute offset guide rail and a pen holding mechanism. A plurality of suction discs are arranged at the bottom of the main locating seat, the cylindrical gear planetary transmission mechanism comprises an ellipse control gear set and an involute control gear set, and the pen holding mechanism comprises a rack and a drawing pen installing hole which is arranged at one end of the rack and perpendicular to the side face of the rack. By means of combination of the cylindrical gear planetary transmission mechanism and the four-parallel-rod mechanism and stability of the four-parallel-rod mechanism, the phenomenon that an ellipsograph is easily clamped or unstable in dead point transition in the ellipse drawing process is avoided; the multifunctional ellipsograph can freely stretch out and draw back, is small in size and convenient to carry, and can be used for drawing high-precision ellipses of different sizes; more drawing functions can be achieved if the pen holding mechanism is installed at different places; chalk can be automatically supplemented in an elastic pressing mode by adopting a chalk elastic pressing automatic supplementation device, and using convenience of the multifunctional ellipsograph is greatly improved.

Description

technical field [0001] The invention relates to a drawing tool, in particular to a multifunctional ellipsometer which integrates drawing ellipses, drawing involutes and dynamically demonstrating a four-bar mechanism. Background technique [0002] An ellipse is a geometric figure that is often encountered in drawing. The drawing of an ellipse is more complicated. When encountering more ellipses in a drawing, it often takes a lot of working time for the drawing staff. Therefore, people hope to have a simple, convenient and accurate way to draw an ellipse. instrument. Currently, there are two types of instruments of this type on the market: the cross-recessed sliding rod type ellipse gauge and the bevel gear planetary drive type ellipse gauge. When drawing graphics, it mainly has the following defects: 1. Because the movement process of the cross-recessed sliding link type ellipse gauge is relatively complicated, there are still many dead point transitions that are easy to get...

AI Technical Summary

Problems solved by technology

When drawing graphics, it mainly has the following defects: 1. Because the movement process of the cross-recessed sliding link type ellipse gauge is relatively complicated, there are still many dead point transitions that are easy to get stuck and unstable during the process of drawing an ellipse. It is difficult to draw a small-sized ellipse, and it is impossible to directly control and read the size of an ellipse that can be drawn; 2. Since the bevel gear planetary drive ellipsometer is driven by a bevel gear, the meshing gap is large, and there is an impact during the drawing process. When the force is different, it is easy to cause a large change in the parallelism difference between the surface of revolution and the ellipse track surface, resulting in low accuracy of the drawn ellipse track; 3. The existing ellipsometer has a single function and can only draw ellipses; 4. The existing ellipse The structure of the instrument is complex, bulky, unable to shrink freely, and inconvenient to carry

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