CN2133463Y - Multipurpose fast drawing board - Google Patents

Abstract

The multipurpose fast drawing board consists of protractor notch, main ruler board and auxiliary ruler, and features that the protractor notch is a three-quarter circular protractor, the vertical sides and the scale center are used as the edge scale lines and vertical cross points of the main ruler board and the auxiliary ruler, and the main ruler board also has roughness symbol guide slot 9 for fast reading and drawing 0-360 deg. angle, fast drawing different sides, different polygons, different sides squares, rectangles, rectangular coordinate system, roughness symbol, etc.

Description

Multi-purpose quick drawing plate

The utility model belongs to drafting instrument, particularly belongs to the rapid drafting plates of using more.

In the prior art, though some has fast fast reading amount simultaneously drafting instrument, draw the effect of angle, straight line, curve, circle, ellipse, but for the amount of reading of 180-360 ° of angle with draw, the different length of sides, the polygon of different angles and rectangular coordinate system and roughness symbol etc. drawn fast and can not be realized, cause time-consuming, bothersome, inconvenience for overcoming these defectives, is improved it.

The purpose of this utility model provides the fast fast reading amount of a kind of energy and the 0-360 ° of angle of drawing, the different length of sides of drawing fast, the polygon of different angles, the rapid drafting plates of using such as rectangular coordinate system, roughness symbol more.

The utility model is to be lacked, the main scale plate, paid a chi and constitute by protractor.It is 3/4ths circular protractors that protractor lacks, and is carved with the graduation mark of 0-270 ° and 270-0 ° on it simultaneously, with its vertical both sides and scale center respectively as main scale plate, the edge graduation mark of paying chi and main scale plate, pay the square crossing point of chi.Main scale plate and the edge of paying chi can be delineated the graduation mark of appropriate length as required, and the main scale plate is rectangular slab, are provided with the round guide hole of various models on it as required, oval guide hole, curve guide groove, prismatic guide hole, grid guide hole, roughness guide groove etc.

Fig. 1 is a structure chart of the present utility model.

In the accompanying drawings, the 1-protractor lacks, 2-main scale plate, and 3-pays chi, 4-circle guide hole, the oval guide hole of 5-, 6,6 '-curve guide groove, 7-prismatic guide hole, 8-grid guide hole, 9-roughness symbol guide groove.

Embodiment of the present utility model:

1. the amount of reading and 0-360 ° the angle of drawing apace:

Earlier overlap (or the straight line that draws) with the one side of reading angulation with main scale plate 2, then main scale plate 2 is overlapped with square crossing point and the angle point (or end points of straight line) of paying chi 3, rotate this draughting board, make protractor lack 1 the amount of reading number graduation mark and the another side coincidence (or identical with angle value to be painted) of reading angulation, angle is readable amount (or drawing).

2. the different length of sides of drawing apace, the polygon of different angles:

In the time of the angle of drawing fast as stated above, with main scale plate 2, the number of division of paying chi 3 measures the length of side different length of sides of can drawing, the polygon of different angles.

3. the rectangular coordinate system of drawing apace:

From main scale plate 2, the crosspoint of paying chi 3 begins to draw respectively straight line, and according to main scale plate 2, the graduation mark of paying chi 3 marks the spacing on the longitudinal and transverse axle respectively, and with its crosspoint as origin of coordinate.

4. circle, ellipse, curve, prismatic, grid, roughness symbol apace draw:

As required, respectively with the round guide hole 4 on the main scale plate 2, oval guide hole 5, curve guide groove 6,6 ', prismatic guide hole 7, grid guide hole 8, roughness symbol guide groove 9 can draw one by one.

5. square, the rectangle of the different length of sides of drawing apace:

From the main scale plate 2 of this draughting board, the square crossing point of paying chi 3 straight line that draws respectively, length is respectively the length of side that needs, and then this draughting board being rotated 180 ° is available main scale plate 2, a pair chi 3 other both sides of drawing respectively

The utility model is compared the good effect that produces with prior art:

1. the rapidly amount of reading and 0-360 ° the angle of drawing.

2. the different length of sides of drawing apace, the polygon of different angles.

3. square, the rectangle of the different length of sides of drawing apace.

4. the rectangular coordinate system of drawing apace.

5. can mark roughness symbol etc. apace.

Claims (1)

1, a kind ofly lacks 1, main scale plate 2, pays the rapid drafting plates of using that chi 3 constitutes more by protractor, it is characterized in that it is 3/4ths circular protractors that said protractor lacks 1, roughness symbol guide groove 9 as the square crossing point of main scale plate 2, the edge graduation mark of paying chi 3 and main scale plate 2, pair chi 3, is contained respectively in its vertical both sides and scale center in the said main scale plate 2.

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