CN103879205A

CN103879205A - Multifunctional polar coordinate instrument

Info

Publication number: CN103879205A
Application number: CN201410147801.0A
Authority: CN
Inventors: 张松吉; 李则怡; 吉星; 张莽原
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-08
Filing date: 2014-04-08
Publication date: 2014-06-25
Anticipated expiration: 2034-04-08
Also published as: CN103879205B

Abstract

The invention relates to a multifunctional polar coordinate instrument for potting a polar coordinate. The multifunctional polar coordinate instrument is composed of a semicircle colorless and transparent plastic dial and a white nontransparent plastic ruler, the dial and the ruler are combined together through a shaft in the circle center of the back face of the dial and a circular hole in the ruler, and the ruler can perform 180-degree rotation below the dial. A reticule is formed by the diameter of the dial and the radius corresponding to the 90-degree scale on the upper surface of the shaft. A side wall perpendicular to the dial is arranged at the arc-shaped edge of the back face of the dial, the side wall and the shaft are equal in height, and the height is slightly larger than the thickness of the ruler. The zero graduation end of the ruler is in an arc shape, the right middle, close to the arc-shaped end, of the ruler is provided with a cylindrical circular hole, and the diameter of the circular hole is slightly larger than the diameter of the shaft on the dial. An indicating line pointing to the circle center of the upper bottom face on the circular hole is arranged at the arc-shaped end. A cuboid-shaped groove hole is formed form the circular hole to the other end of the ruler, one long edge of the upper bottom face on the groove hole, the indicating line and the circle center of the upper bottom face of the circular hole are in the same straight line, length scales are arranged on the long edge, and a zero point is located on an axis of the circular hole.

Description

Multi-functional polar coordinates instrument

Technical field

The present invention relates to a kind of point and paint polar instrument, the multi-functional polar coordinates instrument especially being formed by scale and ruler.

Background technology

Polar coordinate system is planar to use the coordinate system that represents position a little apart from walk-off angle.At present, in working and learning, for point on drawing is painted the polar coordinates of certain point, first need use amount hornwork, aim at limit with the center of circle of protractor, zero degree line is overlapped with pole axis, equal in the scale value of protractor to put a point on the position of polar angle, to determine the position on the whole limit of polar angle; And then utilize that ruler crosses on the whole limit of limit and polar angle that do a ray, then on ray, from limit, measure one section of line segment that equals utmost point footpath, line segment is the polar coordinates of this point away from the end points place of limit so.

Can find out from the some process of painting above, to paint the polar coordinates of a point in order putting and just need to change different instruments, and protractor need to be aimed at a limit and determine a point on the whole limit of polar angle one time, ruler not only also needs to aim at a limit but also need to aim at that point on the whole limit of polar angle simultaneously, it is very inconvenient not only to do, and also there will be error to a certain degree through aligning repeatedly.If main points are painted multiple points or the moving some polar coordinates at diverse location, just need to constantly change instrument, just do trouble more.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of instrument easy and simple to handle, and quick and precisely the polar coordinates of certain point are painted in place.

For solving the problems of the technologies described above, the present invention is mainly made up of scale and ruler.Have a columniform axle at the circle centre position of scale reverse side, the axis of axle is by the center of circle of scale.On ruler, have a circular hole, in axle is inserted into circular hole time, ruler can do 180 degree rotations around axle below scale.

Described scale is semicircle, is made up of colourless transparent plastic, is carved with the scale of the number of degrees, and indicates respectively two row words of 0-180 degree and 180-0 degree at the edge of scale front circular arc from one end to the other end of diameter.In the time that ruler rotates to the position of 180 degree, at the reverse side of scale, the arc edge not overlapping with ruler has the abutment wall perpendicular to scale, abutment wall and axle are contour and be slightly larger than the thickness of ruler, like this, and in the time that scale is placed on drawing, pressing scale by hand appropriateness, scale can be stable on drawing by axle and abutment wall, and now, ruler can do 180 degree rotations below scale.The radius that the diameter of scale and 90 degree are corresponding forms a crosshair at the upper surface of axle, as aiming at certain fixing point.

Described ruler, is made up of White-opalescent plastics, and its zero mark end is circular-arc.There is a columniform circular hole ruler middle near arc end, the diameter of the slightly larger in diameter of circular hole axle on scale.In the middle of circular-arc end surfaces, there is an index line that points to the circular hole upper bottom surface center of circle, utilize this index line to can read the number of degrees of ruler rotation.Have a cuboid slotted eye from circular hole to the other end of ruler, and long limit of slotted eye upper bottom surface and the center of circle of index line and circular hole upper bottom surface are point-blank, also have the numerical value of length scale and sign on this length limit, be positioned on the axis of circular hole its zero point.

When point is painted polar coordinates, axle on scale is inserted in the circular hole on ruler, aim at polar limit with the central point of crosshair on axle, and the straight flange on scale is overlapped with pole axis, and now ruler, below scale, rotates ruler, the index line of ruler arc end is overlapped with corresponding angle index, now the indicated number of degrees of index line are polar polar angle, then utilize the scale on slotted eye limit, equal utmost point footpath place point and draw polar coordinates by the straight scale value that is connected on.So like this, rotate the polar coordinates that ruler can Quick-Point be painted multiple points.

If when the number of degrees at an angle of amount, with the summit of the accurate alignment angle of central point of crosshair, and the straight flange on scale is overlapped with the one side at angle, rotate ruler, in the time that the graduated limit of slotted eye overlaps with the another side at angle, the number of degrees of index line indication are the number of degrees of institute's angle measurement.

If index line is aimed to the graduation mark of 90 degree, between the long limit of ruler and the straight flange of scale, become right angle, state now becomes a square, can utilize so the vertical line of this instrument picture right angle and straight line etc.

In addition, utilize this instrument, also can draw azimuth of target and direction line.

The scale of this instrument both can separate with ruler, the different ruler combination of length that also can be supporting from other.

Compared with prior art, this beneficial effect of the invention is: rational in infrastructure, accurate positioning, low cost of manufacture, easy to use, be convenient for carrying, multi-use, when work quick and precisely.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

Fig. 1 is the top view of the multi-functional polar coordinates instrument of the present invention.

Fig. 2 is the top view of scale in multi-functional polar coordinates instrument.

Fig. 3 is the right view of scale in multi-functional polar coordinates instrument.

Fig. 4 is the front view of ruler in multi-functional polar coordinates instrument.

Fig. 5 is the top view of ruler in multi-functional polar coordinates instrument.

The specific embodiment

Fig. 1 is the top view of the multi-functional polar coordinates instrument of the present invention.Scale 1 and ruler 7 combine by the circular hole 9 on axle 2 and ruler 7 on scale 1, and ruler 7 is below scale 1, and ruler 7 can do 180 degree rotations around axle 2.

Fig. 2 is the top view of scale 1 in this instrument.This scale 1 is semicircle, is made up of colourless transparent plastic.Edge at scale 1 front circular arc is carved with number of degrees scale from one end to the other end of diameter 5, and indicates two row's number of degrees values of 0-180 degree and 180-0 degree.At the circle centre position of scale 1 reverse side, there is a columniform axle 2 perpendicular to scale 1, the front of the upper surface of axle 2 and scale 1 is in same plane, and the axis of axle 2 is by the center of circle of scale 1.The radius 6 corresponding to diameter 5 and 90 degree of scale 1 forms a crosshair 3 at the upper surface of scale axle 2, and the crosspoint of crosshair 3 overlaps with the center of circle, and crosshair 3 is as certain fixing point of aiming on drawing.If Fig. 1 is to Fig. 4, in the time that ruler 7 rotates to the position of 180 degree, at the reverse side of scale 1, the arc edge not overlapping with ruler 7 has one section of abutment wall 4 perpendicular to scale 1, and abutment wall 4 is contour and be slightly larger than the thickness of ruler 7 with axle 2.

In Fig. 2 and Fig. 5, ruler 7 is made up of White-opalescent plastics, and the zero mark end of ruler 7 is circular-arc, has a columniform circular hole 9 near ruler 7 middles of arc end, the diameter of the slightly larger in diameter of circular hole 9 axle 2 on scale 1, and ruler 7 can freely rotate around axle 2.In the middle of circular-arc end surfaces, there is an index line 10 that points to the circular hole 9 upper bottom surface centers of circle, utilize index line 10 to can read the number of degrees that ruler 7 rotates.There is a cuboid slotted eye 8 from circular hole 9 to the other end of ruler 7, and the center of circle of the long limit 11 of of slotted eye 8 upper bottom surfaces and index line 10 and circular hole 9 upper bottom surfaces point-blank, also the numerical value that has length scale and sign on this length limit 11, be positioned on the axis of circular hole 9 its zero point.

Claims

1. a multi-functional polar coordinates instrument, mainly comprise a scale and a ruler, scale is semicircle, made by colourless transparent plastic, be carved with the scale of the number of degrees from one end to the other end of diameter at the edge of scale front circular arc, and indicate two row's number of degrees values of 0-180 degree and 180-0 degree, the radius that the diameter of scale and 90 degree are corresponding forms a crosshair at the upper surface of axle, the crosspoint of crosshair overlaps with the center of circle, ruler is made up of White-opalescent plastics, it is characterized in that: scale (1) and ruler (7) combine by the circular hole (9) on axle (2) and ruler (7) on scale (1), ruler (7) can do 180 degree rotations around axle (2) below scale (1).

2. according to multi-functional polar coordinates instrument claimed in claim 1, it is characterized in that: described scale (1), have a columniform axle (2) perpendicular to scale (1) at the circle centre position of its reverse side, the axis of axle (2) is by the center of circle of scale (1).

3. according to multi-functional polar coordinates instrument claimed in claim 1, it is characterized in that: described scale (1), in the time that ruler (7) rotates to the position of 180 degree, at the reverse side of scale (1), the arc edge not overlapping with ruler (7) has the abutment wall (4) perpendicular to scale (1), and abutment wall (4) and axle (2) are contour and be slightly larger than the thickness of ruler (7).

4. according to multi-functional polar coordinates instrument claimed in claim 1, it is characterized in that: described ruler (7), its zero mark end is circular-arc, there is a columniform circular hole (9) ruler (7) middle near arc end, and the slightly larger in diameter of circular hole (9) is in the diameter of the upper axle (2) of scale (1).

5. according to multi-functional polar coordinates instrument claimed in claim 1, it is characterized in that: described ruler (7), circular hole (9) from arc end has a cuboid slotted eye (8) to the other end of ruler (7), in the middle of the circular-arc end surfaces of ruler (7), there is an index line (10) that points to circular hole (9) the upper base center of circle, and the center of circle of a long limit (11) of slotted eye (8) upper bottom surface and index line (10) and circular hole (9) upper bottom surface point-blank, on this length limit (11), there is the numerical value of length scale and sign, be positioned on the axis of circular hole (9) its zero point.