Ellipsograph

Abstract

The invention provides an ellipsograph. According to the ellipsograph, drawing pencils can be replaced according to needs, and the directions and heights of the drawing pencils can also be adjusted. The ellipsograph comprises a base, a stand column, a base block, a push rod and a locating pin. The two ends of the locating pin are arranged in sliding chutes, one end of a second connecting rod is hinged to the base block, the other end of the second connecting rod is connected with a second intermediate block, a hand wheel, the second intermediate block and a second rotating shaft are connected through bolts, the second rotating shaft is connected with a second adjusting rod, and the second adjusting rod is connected with a second force transmission rod; one end of a first connecting rod is hinged to the base block, the other end of the first connecting rod is connected with a first intermediate block, a bolt sequentially penetrates through a fixing sleeve, the first intermediate block and a first rotating shaft, the first rotating shaft is connected with a first adjusting rod, the first adjusting rod is connected with a first force transmission rod, and a drawing pencil connecting piece is arranged at the position where the first force transmission rod is hinged to the second force transmission rod. The ellipsograph has the advantages of being high in operation precision, convenient to operate, high in adaptability, capable of being used for drawing a whole ellipse as well as a part of the ellipse, and convenient and fast to use.

Description

[0001] technical field [0002] The invention relates to a drawing tool, in particular to an ellipsometer. Background technique [0003] In engineering drawing, when drawing a circle or an ellipse, it is often necessary to use an ellipsometer. There are many kinds of ellipsometers, among which the invention patent with publication number CN 1076159A discloses "a kind of suspended bevel gear ellipsometer". The transmission accuracy and drawing quality of this device are relatively high, so it has been widely used. [0004] Yet this drawing device also has self shortcoming, 1. the drawing pen on this device is fixed, can't adjust, can't adapt to the needs of different occasions; 2. the position and direction of drawing pen in this device are fixed, can't according On-site needs to adjust the drawing direction and drawing height; 3. The device can only draw a complete ellipse, but not a part of the ellipse. When a partial ellipse is required, the redundant lines need to be era...

AI Technical Summary

Problems solved by technology

[0004] Yet this drawing device also has self shortcoming, 1. the drawing pen on this device is fixed, can't adjust, can't adapt to the needs of different occasions; 2. the position and direction of drawing pen in this device are fixed, can't according On-site needs to adjust the drawing direction and drawing height; 3. The device can only draw a complete ellipse, but not a part of the ellipse. When a partial ellipse is required, the redundant lines need to be erased, which is troublesome to operate; 4. You need to give the ellipsometer a downward pressure to prevent the brush from slipping

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