CN201065013Y - Scaling ruler - Google Patents

Abstract

A scaling ruler belongs to the field of drawing tools. The utility model aims at providing a but scale of direct drawing when reducing or enlarging the pattern. The utility model discloses there is the sliding tray on two the same chi bodies, passes adjusting bolt at two sliding trays, and the cover has the nut on adjusting bolt. The utility model discloses the principle development according to the similar triangle-shaped of mathematics and coordinate forms, realizes enlargiing or dwindling through the poor multiple of two triangle-shaped sizes that form. And the utility model discloses it is extensive to draw materials, simple structure, and difficult bending deformation uses the utility model discloses enable the user to find out the accurate position and the structural feature of each object image when drawing the figure, just can draw more ideal putting the figure picture according to the mould drawing of the connection restructuring hand of a plurality of structure points.

Description

The scaling chi

Technical field:

The utility model belongs to the drawing instrument field.

Background technology:

Present drawing at industrial circle, the drawing in fine arts field or the like sometimes all needs big figure to be dwindled or little figure is amplified, the corresponding like this engineer's scale that just occurred, for example the used engineer's scale of factory is a leg-of-mutton chi, carrying out ratio by the scale above the chi dwindles or amplifies, and commonly used on the fine arts be that first drafting is dwindled or the grid of magnification ratio dwindling or amplifying before, in lattice, map then, this dual mode is a drawing tool relatively more commonly used at present, relatively trouble operates, all need to do the preparation in early stage, and preliminary preparation is relatively loaded down with trivial details, has prolonged the time when drawing drawing virtually, strengthens working strength.

Summary of the invention:

The purpose of this utility model provides a kind of scaling chi that can directly draw when dwindling or amplify pattern.

The utility model has sliding tray on two identical chi bodies, pass the adjusting bolt at two sliding trays, is with nut on the adjusting bolt.

The two ends of the utility model chi body are pointed.

The utility model develops according to the principle of mathematical similarity triangle and coordinate, and the multiple of the difference by two triangle sizes forming is realized amplifying or dwindling.And the utility model is drawn materials extensively; simple in structure; be difficult for flexural deformation, use the utility model when graphing, can make the user find out the accurate position and the structural feature of each image, according to the connection of some system points again the mould of structure hand draw and just can draw the more satisfactory shape of putting and scheme.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the side view of the utility model Fig. 1.

The specific embodiment:

The utility model has sliding tray 2 on two identical chi bodies 1, pass at two sliding trays 2 and regulate bolt 3, is with nut 4 on adjusting bolt 3.

The utility model is accurate for point-to-point sampling, is pointed with the two ends of chi body 1.

Using method:

The first step is made two orthogonal two datum lines respectively on pattern and drawing paper;

Second step, on the turnover of pattern or extrusion position, determine several system points, so that locate amplifying on the pattern, move the adjustment screw of adjusting pantograph, transfer to needed multiple, tighten then;

The 3rd step, to open pantograph and measure 2 distances on the pattern with the microcephaly, this moment, the angle of chi was constant, same 2 distance of on drawing paper, drawing and amplifying with major part, and this distance of 2 is to have amplified according to selected multiple at this moment;

The 4th step by that analogy, indicated each system point respectively, was scalable original pattern with each system point line.

Claims (2)

1. a scaling chi is characterized in that: on two identical chi bodies (1) sliding tray (2) is arranged, pass at two sliding trays (2) and regulate bolt (3), be with nut (4) on adjusting bolt (3).

2. scaling chi according to claim 1 is characterized in that: the two ends of chi body (1) are pointed.

Images