CN102837533A - Curve gauge - Google Patents
Curve gauge Download PDFInfo
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- CN102837533A CN102837533A CN201210335173XA CN201210335173A CN102837533A CN 102837533 A CN102837533 A CN 102837533A CN 201210335173X A CN201210335173X A CN 201210335173XA CN 201210335173 A CN201210335173 A CN 201210335173A CN 102837533 A CN102837533 A CN 102837533A
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- China
- Prior art keywords
- syringe needle
- scale band
- written
- winding
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A curve gauge can be used for drawing ellipses and hyperbolic curves. The curve gauge mainly comprises a compasses bracket, a pen a and a pen b. When the curve gauge is used for drawing an ellipse or a hyperbolic curve, the compasses bracket and the pen a (or b) are used, a scale belt is connected to a pin point a, the pen a (or b) and a pin point b and is fixed at the pin point b by a pull ring; and when the pen a (or b) moves along the scale belt, part of the ellipse or the hyperbolic curve can be drawn by the pen a (or b). In the same way, the complete ellipsoid or the hyperbolic curve can be drawn accurately.
Description
Technical field:
The present invention is that a kind of manual drawing is oval, hyp instrument.
Background technology:
At present, but do not have that a kind of instrument manual drawing is oval accurately, hyperbola.In oval, hyp relevant teaching, teachers and students can't oval, the hyp shape of direct feel, this to teachers and students' teaching, solve a problem and bring difficulty.
Summary of the invention:
Deficiency can't direct feel oval in order to overcome, hyp shape, a kind of manual drawing is oval accurately, hyp instrument but the present invention provides---bent rule.
Technical scheme of the present invention:
This bent rule are made up of a compasses support and two " pens ".
Compasses support capital equipment: compasses bracket cover, bar a, bar b, axle a, axle b, syringe needle stop a, syringe needle stop b, syringe needle a, syringe needle b, scale band and draw ring.Its king-rod a and bar b are connected with a joggle, and bar a, bar b are connected by axle a, axle b with the compasses bracket cover, and bar a, bar b only can be around axle a, axle b motions.Bar a is connected by syringe needle stop a with syringe needle a, can regulate syringe needle a by syringe needle stop a, makes syringe needle a perpendicular to the bottom surface, and is fixing then.The connection of bar b between syringe needle b be being connected in bar a and syringe needle a in like manner.Syringe needle a right side (inboard) is fixedly connected with the scale band.Wherein draw ring is made up of square frame a, draw ring connector, frame b.The needle point of syringe needle a and right side (inboard) sideline is on same vertical line, and the needle point of syringe needle b and left side (inboard) sideline is on same vertical line.Be fixedly connected between square frame a and the draw ring connector.The draw ring connector passes the frame b left side, and frame b can rotate around the draw ring connector.Syringe needle b both sides fluting, and groove is bored a hole up and down.The square frame a left side of draw ring is outside left groove, and all in right groove, square frame a goes up bottom and runs through through the hole for square frame a the right, draw ring connector and the frame b left side.The draw ring height is identical with the scale bandwidth.The scale band passes the gap between square frame a and the syringe needle b left side, and when draw ring drew to the right, square frame a just pushed down the scale band and fills up left groove, and the frame b left side just goes out syringe needle b the right (this moment, this groove size was suitable), rotating frame b, and promptly lockable scale band is on syringe needle b.
A capital equipment: written a, penholder.Nib is on the penholder center line.
B capital equipment: written b, shell, spool, winding, motor, battery, electric wire, switch.Wherein switch is made up of binding post a, binding post b, metal clips, switch slip lid, and spool is fixedly connected with motor.Connecting binding post a, battery, motor, binding post b successively by electric wire constitutes.
Among a, somewhere open semicircle groove in the middle of penholder, groove is high identical with the scale band, stays a buttress shaft in the penholder centerline, and this post has the gap between other semicircle entity, and confession scale band passes from gap location.
Among the b, the tape head place from up to down slots, and the scale band just passes from groove, and groove is high identical with scale band height.Open square opening in a b shell left side, be convenient to winding and pass.On spool, the part spool of scrolling winding is identical with the winding height, and all has metal to stretch out up and down, so that block winding and scale band, prevents that it from squinting.
The scale band is with during syringe needle a, syringe needle b, an a, a b are connected, and the following end distance bottom surface of all grooves, gap and scale band distance is all identical, makes the scale band vertical with the bottom surface, and the following plane that belongs to of scale band is parallel with the bottom surface.
When drawing ellipse, use a compasses support and an a.A given elliptic equation
calculates focal length
and adjusts to syringe needle a, syringe needle b vertical with the bottom surface; Making the distance between syringe needle a, the syringe needle b is 2 times of focal lengths, i.e. 2c.The gap that the scale band passes an a is connected with syringe needle b, and making the scale belt length between syringe needle a and the syringe needle b is definite value 2m.A slides along the scale band from left to right, keeps an a perpendicular to the bottom surface, can obtain a curve, is oval half the.In like manner, at the opposite side of compasses support second half ellipse that can draw, promptly obtain the ellipse of a complete and accurate.
When drawing hyperbola, use a compasses support and a b.A given Hyperbolic Equation
calculates focal length
and adjusts to syringe needle a and syringe needle b vertical with the bottom surface; And distance is 2c between two syringe needles, and the winding gap that the scale band passes a b is connected with syringe needle b.Syringe needle a is L to the scale belt length of winding gap location
1, the winding gap is long to the winding at syringe needle b place to be L
2, make | L
1-L
2|=2m.Push the switch slip lid of a b, i.e. close switch, motor start-up.Winding hauls the scale band and is involved in a b inside with spool.Wherein when the scale band began to get among the b, with written b contact bottom surface, written b slided with the bottom surface that is entangled in of scale band; Keep a b perpendicular to the bottom surface; Can obtain a curve, be hyp
when written b moves on syringe needle a, the syringe needle b line, push to the switch slip lid; Shell fragment is upspring; Switch breaks off, and motor stops, and promptly spool stops to involve in the scale band.Then, manually slowly pull out the scale band, in order to using next time.In a certain side of compasses support, work as L
1＞L
2The time, on the right of promptly getting
Work as L
1＜L
2The time, promptly get the left side
In like manner at the opposite side of compasses support, can obtain hyp two other
Can obtain the hyperbola of complete and accurate.
Beneficial effect:
The invention has the beneficial effects as follows that but manual drawing is oval accurately, hyperbola, satisfy numerous teachers and students' user demand, make the more convenient teaching of teacher, student more direct feel makes things convenient for learning and mastering knowledge to graphics shape.
Description of drawings:
Fig. 1 is a compasses supporting structure sketch map.
Fig. 2 is a syringe needle b part detail drawing.
Fig. 3 is the draw ring structural representation.
Fig. 4 is an a structural representation.
Fig. 5 is the partial sectional view of an a.
Fig. 6 is a b structural representation.
Fig. 7 is a b switch sections enlarged drawing.
Fig. 8 is a winding head enlarged drawing.
Fig. 9 is a b simple circuit figure.
Figure 10 is that the compasses support cooperates figure (drawing oval) with an a.
Figure 11 is that the compasses support cooperates figure (drafting hyperbola) with a b.
Among the figure:
1-compasses bracket cover 2-bar a 3-bar b 4-syringe needle stop a 5-syringe needle stop b 6-syringe needle a 7-syringe needle b
8-scale band 9-square frame a 10-frame b 11-draw ring connector 12-nib a
The 13-penholder 14-shell 15-slip lid 16-binding post a 17-metal clips 18-binding post b 19-battery that opens the light
20-motor 21-rotating shaft 22-winding 23-nib b24-axle a 25-axle b
The specific embodiment:
When drawing ellipse; A for example given target elliptic equation
can be known its major semiaxis m=5; Semi-minor axis n=4, focal length c=3.Numerical value unit is centimetre (cm) in the concrete curve plotting.
Use a compasses support and an a, syringe needle a (6), syringe needle b (7) are adjusted to vertical with the bottom surface, making the distance between syringe needle a (6), the syringe needle b (7) is 2 times of focal length 2c=6 (cm).The gap that scale band (8) passes an a is connected with syringe needle b (7), and making the scale belt length between syringe needle a (6) and the syringe needle b (7) is definite value 2m=10 (cm).Wherein the scale band (8) that is connected to of scale band (8) and syringe needle b (7) passes the gap between the square frame a (9) and syringe needle b (7) left side; Draw frame b (10) more to the right; Square frame a this moment (9) just in time pushes down scale band (8) and fills up the left groove of syringe needle b (7), and the left side of frame b (10) just goes out syringe needle b (7) the right, rotating frame b (10); Utilize syringe needle b (7) trunk to block frame b (10), promptly pin scale band (8) on syringe needle b (7).Left hand pinches compasses bracket cover (1), makes syringe needle a (6), syringe needle b (7) perpendicular to bottom surface and not mobile.The right hand pinches penholder (13), and written a (12) is slided along scale band (8) from left to right, keeps an a perpendicular to the bottom surface, can obtain a curve.Define according to ellipse: on the same plane, is the track of the point of normal value to two fixed points apart from sum.Can know that this curve is the half the of ellipse.Fixedly the compasses support is motionless; In like manner can draw second half ellipse, promptly obtain the ellipse
of a complete and accurate at the opposite side of compasses support
When drawing hyperbola; A for example given target Hyperbolic Equation
can be known its major semiaxis m=4; Semi-minor axis n=3, focal length c=5.The concrete hyperbola of drawing makes each numerical value unit be centimetre (cm).
Use a compasses support and a b, syringe needle a (6), syringe needle b (7) are adjusted to vertical with the bottom surface, the winding gap that scale band (8) passes winding (22) is connected with syringe needle b (7), and connected mode was identical when wherein syringe needle b (7) was with scale band (8) connection and drafting ellipse.Making the distance between syringe needle a (6), the syringe needle b (7) is 2 times of focal length 2c=10 (cm), specifies syringe needle a (6) to winding gap location distance L
1=14 (cm), syringe needle b (7) is to winding gap location distance L
2=6 (cm), promptly satisfy | L
1-L
2|=2m=8 (cm).
Left hand pinches compasses bracket cover (1), and control compasses support does not move, and the right hand pinches a b, a b switch slip lid (15) is pushed, i.e. and close switch, motor (20) starts.Winding (22) hauls scale band (8) and is involved in a b inside with spool (21) rotation.Wherein when scale band (8) began to get among the b, with written b (23) contact bottom surface, written b (23) slided with the bottom surface that is entangled in of scale band (8); Keep a b perpendicular to the bottom surface, when written b (23) moves on syringe needle a (6), syringe needle b (7) connecting line, push to switch slip lid (15); Metal clips (17) is upspring, and switch breaks off, and motor (20) stops; Spool (21) stops to involve in scale band (8), can obtain a curve.Define according to hyperbola: on the same plane, be the track of the point of normal value to the absolute value of the difference of the distance of two fixed points.Can know that this curve is hyp
and half the for the curve in hyperbola the right.Manually slowly pull out scale band (8) then in order to using next time.
At the opposite side of compasses support, still make L
1=14 (cm), L
2=6 (cm) keep the compasses support motionless, and the same method for using can obtain second half of this curve, promptly is combined into one on hyp the right.Keep the compasses support still fixed, when making L
1=6 (cm), L
2During=14 (cm), also satisfy | L
1-L
2|=2m=8 (cm), in like manner can draw out one on the hyperbola left side.
So far, obtain the hyperbola
of complete and accurate
Claims (5)
1. a manual drawing ellipse, hyp instrument one song are advised, and mainly are made up of compasses support, an a, a b, and it is characterized in that: use the scale band to connect syringe needle a, an a (b), syringe needle b, an a (b) moves along the scale band and draws out required curve.
2. bent rule according to claim 1 is characterized in that: fluting, perforate on syringe needle b, and the square frame a of draw ring passes syringe needle b; After the scale band passes the gap on the square frame a and the syringe needle b left side, can be through drawing frame b to the right, rotating frame b fixed when frame b went out syringe needle b the right.
3. bent rule according to claim 1, it is characterized in that: a b shell is passed in winding, and an end is fixedly connected with spool; Standard width of a room in an old-style house crack, one termination proximal border place, the scale band passes winding gap, close switch; Motor work, spool rotates, and the scale band is involved in the b with winding.
4. bent rule according to claim 1 is characterized in that: during curve plotting, the scale band is perpendicular to the bottom surface, and place, scale band base plane parallel is in the bottom surface, and syringe needle a, syringe needle b, written a, written b are perpendicular to the bottom surface.
5. bent rule according to claim 1 is characterized in that: the concentricity axis of written a and penholder, and written a and bottom contact are on central axis; The central axis of nib b is on the shell left side bearing, and written b and bottom contact are on the shell left side bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335173XA CN102837533A (en) | 2012-09-11 | 2012-09-11 | Curve gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335173XA CN102837533A (en) | 2012-09-11 | 2012-09-11 | Curve gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102837533A true CN102837533A (en) | 2012-12-26 |
Family
ID=47365364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210335173XA Pending CN102837533A (en) | 2012-09-11 | 2012-09-11 | Curve gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102837533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018076520A1 (en) * | 2016-10-26 | 2018-05-03 | 段惠中 | Conic curve drawing instrument |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB176676A (en) * | 1921-03-18 | 1922-03-16 | Joseph Manning Ford | Improvements in or relating to apparatus for mechanical construction of curves |
| JPS5344229A (en) * | 1976-10-04 | 1978-04-20 | Toyota Motor Co Ltd | Device for drawing ellipse and hyperbola |
| CN2045358U (en) * | 1989-01-01 | 1989-10-04 | 伊长虹 | Multipurpose drawing instrument capable of drawing ellipse |
| CN2055777U (en) * | 1988-08-23 | 1990-04-11 | 陈建烈 | Drawing instrument for drawing conic section |
| CN2112517U (en) * | 1991-09-27 | 1992-08-12 | 王卫东 | Dual-purpose compasses for ellipse and curve of teaching |
| CN2155311Y (en) * | 1993-07-23 | 1994-02-09 | 赵昌武 | Multi-purpose curve gauge |
| CN2187552Y (en) * | 1994-03-26 | 1995-01-18 | 杨先端 | Multi-purpose drawing compasses |
| CN201511708U (en) * | 2009-09-23 | 2010-06-23 | 徐仁华 | Universal gauge |
-
2012
- 2012-09-11 CN CN201210335173XA patent/CN102837533A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB176676A (en) * | 1921-03-18 | 1922-03-16 | Joseph Manning Ford | Improvements in or relating to apparatus for mechanical construction of curves |
| JPS5344229A (en) * | 1976-10-04 | 1978-04-20 | Toyota Motor Co Ltd | Device for drawing ellipse and hyperbola |
| CN2055777U (en) * | 1988-08-23 | 1990-04-11 | 陈建烈 | Drawing instrument for drawing conic section |
| CN2045358U (en) * | 1989-01-01 | 1989-10-04 | 伊长虹 | Multipurpose drawing instrument capable of drawing ellipse |
| CN2112517U (en) * | 1991-09-27 | 1992-08-12 | 王卫东 | Dual-purpose compasses for ellipse and curve of teaching |
| CN2155311Y (en) * | 1993-07-23 | 1994-02-09 | 赵昌武 | Multi-purpose curve gauge |
| CN2187552Y (en) * | 1994-03-26 | 1995-01-18 | 杨先端 | Multi-purpose drawing compasses |
| CN201511708U (en) * | 2009-09-23 | 2010-06-23 | 徐仁华 | Universal gauge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018076520A1 (en) * | 2016-10-26 | 2018-05-03 | 段惠中 | Conic curve drawing instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |