A kind of electronics ellipsograph
Technical field
The present invention relates to electronic stationery apparatus fields, and in particular to a kind of electronics ellipsograph.
Background technology
Ellipse is a kind of common geometric figure, not only in teaching, and also it is also more in the application of industry-by-industry.So
And due to elliptical particularity, it is a very troublesome thing to draw ellipse, although there is a kind of ellipsograph now, and
And it is theoretically feasible, but practical operation get up it is but very inconvenient.
At present, draw oval most easy method be " four-arcs method " it be suitable for positive wait of circle and survey the technique of painting, i.e., with four sections
Circular arc approx replaces elliptic arc, and this technique of painting drafting is cumbersome, and efficiency is low, and in teaching, teacher draws ellipse on blackboard to disappear
The a large amount of time is consumed, reduces the time for really teaching knowledge, student does topic picture ellipse, the speed done and inscribed can be also reduced, in work
Using upper, designer Ruo Yin draws oval and stops over a large amount of time industry, can substantially reduce working efficiency, from entire industry,
It is reduction of the development speed of entire industry.Therefore, no matter in teaching or in commercial Application, it is oval to be all badly in need of a kind of picture
Simple and rapid device, with the raising for the efficiency that gives an impulse to education and industrial expansion.
Invention content
It is an object of the invention to overcome problem above of the existing technology, provide it is a kind of draw it is oval easily and fast
Electronics oval scale.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme:
A kind of electronics ellipsograph, including housing, knob, clump weight, computing control system, visual slot, mobile rotation focus,
Straight-bar, focus track groove, center, it is characterised in that:The knob, computing control system, visual slot, center are located at housing
Front;The clump weight is located at enclosure interior and positioned at knob side;The mobile rotation focus, straight-bar, focus rail
Road slot is located inside housing bottom surface;The mobile rotation focus, straight-bar are by computing control system controlled motion;The operation
Control system includes digital display screen, input small keyboard, power port, arithmetic unit, rotary motion controller, focus linear motion control
Device processed, straight-bar linear motion controller;The electronics ellipsograph operates operation by following step:
S1)To the heart, center is aligned with drawn coordinate axis origin;
S2)Dead axle, the visual slot are slotted equipped with dead axle, using center as center of circle rotating electron ellipsograph, make coordinate
Axis X-axis negative direction is overlapped with dead axle fluting and is aligned;
S3)Open electronics ellipsograph, digital display screen display input standard ellipse EQUATION x ^2/a^2+y^2/b^2=1, (a>
b>0) a, b value in are inputted by input small keyboard and by the arithmetic unit in computing control system according to wherein a^2-c^2=b^2
Elliptical left focus needed for calculating(- c, 0), the mobile rotation focus of focus linear motion controller driving is in focus track groove
Move to left focus(- c, 0)Position;
S4)It is defined according to oval polar equation, ellipse is with left focus(- c, 0)For pole, elliptical arbitrary point P(ρ, θ)
All meet ρ=ep/(1-ecosθ), wherein e=c/a, p=b^2/c;The straight-bar is equipped with nib, and ρ is mobile rotation focus
To the length of nib, θ is straight-bar and X-axis forward direction angle, is changed to 360 ° from 0 ° and is driven by rotary motion controller, is driven at center
Straight-bar is rotated centered on mobile rotation focus, while straight-bar linear motion controller driving straight-bar movement, moment keep ρ=ep/
(1-ecos θ), the track that nib is drawn are required oval.
Further, the clump weight is located at knob both sides with computing control system respectively, balances left and right weight.
Further, equipped with accumulator or more piece dry cell or external power interface in the power port.
Further, the nib is detachable, is convenient for changing.
Further, left focus in step S3, S4(- c, 0)It can be replaced right focus(C, 0), oval polar coordinates
Equation is also accordingly replaced with right focus(C, 0)Polar equation for pole;The focus track groove is using left focus
(- c, 0)With minus half overlapping of axles of X-axis during as pole, right focus is being used(C, 0)It is overlapped during as pole with X-axis positive axis.
The beneficial effects of the invention are as follows:The present invention provides a kind of simple and accurate for elliptical fast and accurately drawing
Electronics ellipsograph, operating personnel pass through simply to a, b value in the heart, dead axle, the oval normal equation of input, you can fast automatic
Draw out required ellipse.The present invention is defined with elliptical polar coordinates, and drafting obtains accurate ellipse, breaches previous use
Circular arc is simulated or the method for manual drawing.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after attached drawing is coordinated to be described in detail such as.
The specific embodiment of the present invention is shown in detail by following embodiment and its attached drawing.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 is a kind of electronics ellipsograph front schematic view of the present invention;
Fig. 2 is a kind of electronics ellipsograph close-up schematic view of the present invention;
Fig. 3 is a kind of electronics ellipsograph bottom schematic view of the present invention;
Fig. 4 is a kind of electronics ellipsograph bottom movement schematic diagram of the present invention;
Figure label explanation:Housing 1, knob 2, clump weight 3, computing control system 4, visual slot 5, mobile rotation focus 6,
Straight-bar 7, focus track groove 8, center 9, knob mounting hole 21, digital display screen 41, input small keyboard 42, power port 43, dead axle
Fluting 51, nib 71, to axis fluting 72.
Specific embodiment
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
With reference to shown in Fig. 1-4, a kind of electronics ellipsograph, including housing 1, knob 2, clump weight 3, computing control system 4, can
Depending on slot 5, mobile rotation focus 6, straight-bar 7, focus track groove 8, center 9, it is characterised in that:The knob 2, operation control
System 4, visual slot 5, center 9 are located at the front of housing 1;The clump weight 3 is located at 1 inside of housing and positioned at 2 side of knob;
The mobile rotation focus 6, straight-bar 7, focus track groove 8 are located inside 1 bottom surface of housing;It is the mobile rotation focus 6, straight
Bar 7 is by 4 controlled motion of computing control system;The computing control system 4 include digital display screen 41, input small keyboard 42,
Power port 43, arithmetic unit, rotary motion controller, focus linear motion controller, straight-bar linear motion controller;The electricity
Sub- ellipsograph operates operation by following step:
S1)To the heart, center 9 is aligned with drawn coordinate axis origin;
S2)Dead axle, the visual slot 5 are equipped with dead axle fluting 51, with center 9 for center of circle rotating electron ellipsograph, make
Reference axis X-axis negative direction is overlapped with dead axle fluting 51 and is aligned;
S3)Electronics ellipsograph is opened, the display of digital display screen 41 inputs standard ellipse EQUATION x ^2/a^2+y^2/b^2=1,
(a>b>0)In a, b value, inputted by input small keyboard 42 and by the arithmetic unit in computing control system 4 according to wherein a^2-c
^2=b^2 calculates required elliptical left focus(- c, 0), the mobile rotation focus 6 of focus linear motion controller driving is in focus
Left focus is moved in track groove 8(- c, 0)Position;
S4)It is defined according to oval polar equation, ellipse is with left focus(- c, 0)For pole, elliptical arbitrary point P(ρ, θ)
All meet ρ=ep/(1-ecosθ), wherein e=c/a, p=b^2/c;It is mobile rotary coke that the straight-bar 7, which is equipped with 71, ρ of nib,
To the length of nib 71, θ is straight-bar 7 and X-axis forward direction angle, is changed to 360 ° from 0 ° and is driven by rotary motion controller at point 6 centers
It is dynamic, straight-bar 7 is driven to be rotated centered on mobile rotation focus 6, while straight-bar linear motion controller driving straight-bar 7 moves, when
It carves and keeps ρ=ep/(1-ecosθ), the track that nib 71 is drawn is required oval.
Further, the clump weight 3 is located at 2 both sides of knob with computing control system 4 respectively, balances left and right weight.
Further, equipped with accumulator or more piece dry cell or external power interface in the power port 43.
Further, the nib 71 is detachable, is convenient for changing.
Further, left focus in step S3, S4(- c, 0)It can be replaced right focus(C, 0), oval polar coordinates
Equation is also accordingly replaced with right focus(C, 0)Polar equation for pole;The focus track groove 8 is using left focus
(- c, 0)With minus half overlapping of axles of X-axis during as pole, right focus is being used(C, 0)It is overlapped during as pole with X-axis positive axis.
The present invention provides a kind of simple and accurate electronics ellipsograph for elliptical fast and accurately drawing, and operating personnel are led to
It crosses simply to a, b value in the heart, dead axle, the oval normal equation of input, you can fast automatic to draw out required ellipse.This hair
Bright to be defined with elliptical polar coordinates, drafting obtains accurate ellipse, breaches previous using circular arc simulation or manual drawing
Method.
The foregoing is only a preferred embodiment of the present invention, not makees limitation in any form to the present invention;It is all
The those of ordinary skill of the industry can be shown in by specification attached drawing and described above and swimmingly implement the present invention;It is but all
Those skilled in the art without departing from the scope of the present invention, are done using disclosed above technology contents
The equivalent variations of a little variation, modification and evolution gone out are the equivalent embodiment of the present invention;Meanwhile it is all according to the present invention
Variation, modification and evolution of any equivalent variations that substantial technological makees above example etc. still fall within the skill of the present invention
Within the protection domain of art scheme.