CN2270633Y

CN2270633Y - Multifunctional drawing instrument

Info

Publication number: CN2270633Y
Application number: CN 96216420
Authority: CN
Inventors: 朱成考
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-25
Filing date: 1996-07-25
Publication date: 1997-12-17
Anticipated expiration: 2006-07-25

Abstract

The utility model relates to a multifunctional drawing instrument which belongs to the measurement drawing tool of physical quantity. The utility model which is designed for solving the single use function of present drawing form panels is composed of a form panel body, a rotary scale and a moving scale, wherein, the left side of the form panel body is provided with a longitudinal scale, the upper edge is a transverse scale, and the middle is provided with a centimeter grid; an angle disc and the rotating shaft of the rotary scale are arranged at the zero crossover point of two coordinates, and the moving scale is arranged on the transverse scale. The multifunctional drawing instrument can be used for drawing engineering graphs, measuring topographic features or the slope in geological maps, converting true and false inclination angles, solving mathematical trigonometric function, computing elliptic curvature, etc. The utility model has the advantages of wide purposes, simple structure, easy fabrication and convenient carrying.

Description

Multi-function drawing instrument

The utility model multi-function drawing instrument belongs to the measurement drawing tool of physical quantity.

Continuous development along with modern science and technology, Graphing of Engineering, mathematics etc. are constantly proposed new higher requirement, how draw engineering drawing, how the quick difficult problem of computational mathematics correctly becomes increasing engineers and technicians, the student's of universities an middle schools an urgent demand with getting twice the result with half the effort.Also occurred in the market such as the study such as geometric templates, building template and the instrument of drawing, but weak point is a function singleness that influence is promoted the use of.

The objective of the invention is to design a kind of function plotter more complete, simple in structure, easy to carry.

The architectural feature of the utility model multi-function drawing instrument is: it is made up of template body, rotary scale, mobile scale.The template body is rectangle substantially, and engineer's scale is carved with for vertical scale in the left side, and top edge is a horizontal staff, and a centimetre grid, angle scale are established in the centre, and the right side is provided with the basic geometric figure and the curve ruler of drawing hollow out commonly used; Locate to be equipped with rotary scale at vertical scale and horizontal staff zero line intersection point " 0 "; Mobile scale is housed on the horizontal staff.

A raised line that parallels with top edge is arranged at the bottom of described template body front horizontal staff, and coupled relevant position, the mobile scale back side is fluted, can slide freely also detachably after embedding in the raised line.Height should appear in the back plane of template body, mobile scale at grade and not.

Rotary scale has rotating shaft at " 0 " some place, becomes to be rotationally connected with body, and there is aperture at the rotating shaft center, and some apertures are arranged on the rule, is convenient to the picture circle.

The plotter of structure like this, comparing with template commonly used only increases rotary scale and two parts of mobile scale, yet but widened the scope of application greatly: it can be used for the drafting of fundamental figure in the Graphing of Engineering, the mensuration that also can be used for topographic and geologic figure mesoslope degree, trajectory predictions is extended on geological boundary ground, the slope rock mass stability prediction, true and false inclination angle conversion etc.; Greater amount is used for the trigonometric function of mathematical education finds the solution elliptical curvature calculating etc.And plotter itself is simple in structure, makes easily, and is easy to carry.

Further specify structure of the present utility model and using method below in conjunction with drawings and Examples.

Fig. 1 multi-function drawing instrument overall structure figure

Fig. 2 rotary scale enlarged drawing

Fig. 3 A-A amplification profile

As can be seen from Figure 1, multi-function drawing instrument is made up of template body (1), rotary scale (2), mobile scale (3), template body (1) be rectangle substantially (the right is for being with curve circular arc slightly), the left side is the ordinate chi, selected 5,10,20 on the vertical scale, 25 4 kind of engineer's scale that design is commonly used and national topographic map is general (scale can be advanced the method increase and decrease by 10), top edge is a horizontal staff, a centimetre grid is established in the centre, angle scale, have the deep-slotted chip breaker of three hollow outs to be used for angle orientation along radial direction, horizontal direction has level trough to be used for the straight line location.The template body right side is provided with the basic geometric figure of hollow out commonly used such as triangle (equilateral, 45 °, 60 ° right angles), square, five-pointed star, hexagon, circle etc. and curve ruler.

Rotary scale (2) is contained in vertical scale and horizontal staff zero-bit intersection point " 0 " is located, shape is a band scale ruler as shown in Figure 2, and the blade top edge is a working face, (this figure select for use meet five meet ten graduation marks) has some apertures (b) in the rule optional position, is convenient to draw the circle that differs in size.Scale " 0 " point has rotating shaft to become to be rotationally connected with the template body, and there is aperture (a) at the rotating shaft center, is convenient to the centralized positioning of picture bowlder.

Fig. 3 is the amplification profile of template body (1) and mobile scale (3) type of attachment, and the raised line of (1) forms slip with the groove tight connecting of (3) as seen from the figure, and (1) should be at the favourable graphic plotting in same plane with (3) back side.

Multi-function drawing instrument can be made with transparent materials such as lucite or plastics, requires the scale on the chi face that color separation is arranged, the color contrast distinctness, angle line (clockwise scale with counterclockwise scale) for example, the engineer's scale reading can be differentiated with alternate being convenient to of red and black, and centimetre grid can be with red, and horizontal staff is a black.

Illustrate the application of multi-function drawing instrument below.

One, fundamental figure is drawn

Utilize longitudinal and transverse scale can replace the T-square of using always, set square is drawn horizontal line or vertical line, and vertical line directly draws with mobile scale (3), can draw the right angle by horizontal staff and mobile scale; Drawing horizontal line only need be with template body (1) around " 0 " axle half-twist, and promptly available Vertical surveyors' staff is drawn; Become oblique line (any inclination angle of 30 ° of inclinations with level as the need picture, method is all identical), elder generation is with the position of 30 ° of rotary scale (2) blade top edge alignment angle scales, fixing (2) chi, (1) is turned clockwise 90 °-30 °=60 ° together with (3) around " 0 ", then (2) are parallel with (3) top edge, utilize mobile scale (3) to draw.

Draw circle, roundlet can directly draw with the roundlet pattern hole, and then earlier with (a) hole in drawing pin or the pin insertion rotary scale (2), fixedly the center of circle utilizes (2) to make radius to great circle, inserts corresponding (b) hole with tip of a pencil, rotates (2) chi and can finish.

Can draw state basic figure line after, fundamental figure such as the triangle that can draw, trapezoidal, quadrangle, combination shape.

Two, ask trigonometric function

In right angled triangle, two parameters of known any acute angle and one side can be utilized this plotter, obtain other parameters and all trigonometric functions.

As known level direction acute angle A and right limit a, utilize plotter on vertical scale, to measure the length of a, make the horizontal line, rotating counterclockwise (2) chi makes top edge become the horizontal direction inclined at acute angles with horizontal line, scale (2) and parallel lines intersection point reading are the length of hypotenuse, slogan banner on centimetre grid is of a size of another right angle length of side, can be calculated the trigonometric function of ∠ A by hypotenuse, two right-angle side length.

Three, ask elliptical curvature:

Elliptical curvature control number is major axis (2a), and minor axis (2b), perspective angle (X) and focal length (2c) are as long as known wherein two numbers utilize plotter can determine other two numbers.

As known a, b, ask focal length c, x

Measure b and make vertical line on the plotter horizontal staff, measure length a on rotary scale (2), rotate (2) itself and vertical line are met at a bit, then this ordinate number is the reading of c, and (2) chi and horizontal line angle are perspective angle x.

Multi-function drawing instrument also has a lot of purposes not exemplify one by one, has found out the extensive of application from top applicating example.

Claims

1, a kind of multi-function drawing instrument is made up of graduated scale, centimetre grid, angle scale, it is characterized in that: a template body that is rectangle is substantially arranged, the left side is vertical scale, be carved with engineer's scale, top edge is a horizontal staff, locates to be equipped with rotary scale at vertical mark with slogan banner zero-bit intersection point " 0 "; Mobile scale is equipped with at template horizontal staff position.

2, according to the described multi-function drawing instrument of claim 1, it is characterized in that: establish a centimetre grid, angle scale in the middle of the template body, along being that the radial direction in the center of circle has 2～3 hollow deep-slotted chip breakers with " 0 " point, the lower horizontal direction also has the hollow straight-line groove, and the template body right side is provided with the basic geometric figure and the curve ruler of hollow out.

3, according to the described multi-function drawing instrument of claim 1, it is characterized in that: the rotary scale zero-bit has rotating shaft, and there is aperture at the rotating shaft center, has aperture some along the rule direction.

4, according to the described multi-function drawing instrument of claim 1, it is characterized in that: under the horizontal staff of template body front a raised line that parallels with top edge is arranged, coupled relevant position, the mobile scale back side is fluted, and two back planes at grade behind the embedding raised line.

5, according to claim 1,2,3 or 4 described multi-function drawing instruments, it is characterized in that: template body, rotary scale, mobile scale are that transparent material is made.