CN203780147U - Ellipsograph with steplessly adjustable long and short axis radii - Google Patents
Ellipsograph with steplessly adjustable long and short axis radii Download PDFInfo
- Publication number
- CN203780147U CN203780147U CN201420168940.7U CN201420168940U CN203780147U CN 203780147 U CN203780147 U CN 203780147U CN 201420168940 U CN201420168940 U CN 201420168940U CN 203780147 U CN203780147 U CN 203780147U
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- CN
- China
- Prior art keywords
- bevel gear
- ellipsograph
- rotating shaft
- fixed
- major
- 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.)
- Expired - Fee Related
Links
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
An ellipsograph with steplessly adjustable long and short axis radii comprises a rotary arm and is characterized in that a main shaft vertical to the rotary arm is inserted in the front end of the rotary arm in a penetrating way, a bevel gear A sleeves the main shaft and is meshed with a bevel gear B at one side, the bevel gear B is fixed to one end of a transverse rotating shaft, a bevel gear D sleeves the rear end of the rotating shaft and is meshed with a vertical bevel gear C, the interior of the bevel gear C is fixedly provided with a rotary shaft which synchronically moves with the bevel gear C and extends downwards, the middle of the rotary shaft is fixedly provided with a cross shaft forming a 90-degree angle with the rotary shaft, and the cross shaft is fixedly provided with a brush which is the same as the rotary shaft in direction. The ellipsograph has the characteristics of reasonable design, simple structure, convenience in carrying, easiness in operation and steplessly adjustable long and short axis radii, can be used for drawing ellipses according to different requirements, can be widely applied to engineering or study practice, and has wide application prospect.
Description
Technical field
The utility model belongs to elliptical drawing tool, relates to the stepless adjustable ellipsograph of a kind of major and minor axis radius.
Background technology
The oval method of existing drafting has a lot, and conventional have trace-point method, a construction with ruler and compasses etc.But the ellipse that these methods are drawn is not the operating process complexity of the oval and drafting of standard.Also have a variety of and draw specially oval instrument-ellipsograph.As: crosshead shoe ellipsograph
[1], planetary ellipsograph
[2], connecting rod slider-type ellipsograph
[3], but their most complicated operations, complex structure, carries inconvenience, adjusting major and minor axis length that can not be stepless.Yet there are no one not only can step-less adjustment but also simply and easily ellipsograph be applied in the middle of actual production life.
Utility model content
In order to overcome the above-mentioned shortcoming of prior art
,the utility model provides a kind of stepless adjustable ellipsograph of major and minor axis radius simple to operate, simple in structure, easy to carry, can step-less adjustment major and minor axis length of drawing
.
The utility model solves the technical scheme that its technical problem adopts: the stepless adjustable ellipsograph of a kind of major and minor axis radius, comprise a pivoted arm, be interspersed with a main shaft vertical with pivoted arm at pivoted arm front end, on main shaft, be set with a bevel gear A, bevel gear A engages with the bevel gear B of a side, bevel gear B is fixed on horizontal gyroaxis one end, be set with a bevel gear D in gyroaxis rear end, the bevel gear D bevel gear C longitudinal with is meshed, in bevel gear C, being fixed with one is synchronized with the movement to the rotating shaft of downward-extension with bevel gear C, the centre position place of rotating shaft is fixed with one and is the transverse axis at 90 ° of angles with rotating shaft, on transverse axis, be fixed with one with rotating shaft paintbrush in the same way.
Described gyroaxis is fixed on pivoted arm by the back-up block that lays respectively at two groups of bevel gear rear sides that engage.
Described L-type slide block is locked by lock-screw.
Described bevel gear C and bevel gear D are separately fixed on two limits of same L-type slide block.
Described L-type slide block can before and after slippage, thereby change the length of transverse.
The beneficial effects of the utility model are: move in a circle by pivoted arm, the engagement of bevel gear A and bevel gear B simultaneously makes gyroaxis rotation, then, by the engaged transmission of bevel gear C and bevel gear D, makes paintbrush along with transverse axis rotates around rotating shaft; Whole mechanism is by the engaged transmission of two pairs of bevel gears, make pivoted arm contrary with paintbrush gyratory directions, paintbrush movement locus is an ellipse, realize oval drafting, there is reasonable in design, simple in structure, easy to carry, easy and simple to handle, the stepless adjustable feature of major and minor axis radius, can draw the different ellipses that require, can be widely used in engineering or study reality, have broad application prospects.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model top view;
Fig. 3 is the utility model design principle figure.
In figure: 1-pivoted arm, 2-bevel gear A, 3-bevel gear B, 4-bevel gear C, 5-bevel gear D, 6-L type slide block, 7-main shaft, 8-gyroaxis, 9-back-up block, 10-rotating shaft, 11-paintbrush, 12-transverse axis.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Referring to Fig. 1 and Fig. 2, the stepless adjustable ellipsograph of a kind of major and minor axis radius, comprise a pivoted arm 1, be interspersed with a main shaft 7 vertical with pivoted arm 1 at pivoted arm 1 front end, on main shaft 7, be set with a bevel gear A2, bevel gear A2 engages with the bevel gear B3 of a side, bevel gear B3 is fixed on horizontal gyroaxis 108 one end, gyroaxis 108 is fixed on pivoted arm 1 by the back-up block 9 that lays respectively at two groups of bevel gear rear sides that engage, be set with a bevel gear D5 in gyroaxis 108 rear ends, the bevel gear D5 bevel gear C4 longitudinal with is meshed, bevel gear C4 and bevel gear D5 are separately fixed on two limits of same L-type slide block 6, L-type slide block 6 is locked by lock-screw, L-type slide block 6 can before and after slippage, thereby change the radius of transverse, in bevel gear C4, being fixed with one is synchronized with the movement to the rotating shaft 10 of downward-extension with bevel gear C4, the centre position place of rotating shaft 10 is fixed with one and is the transverse axis 12 at 90 ° of angles with rotating shaft 10, on transverse axis 12, be fixed with one with rotating shaft 10 paintbrush 11 in the same way.
Referring to Fig. 3, the stepless adjustable method for designing of above-mentioned major and minor axis radius, comprises the steps: to set up rectangular coordinate system taking the intersection of main shaft 7 and pivoted arm 1 as origin of coordinates O, and using rotating shaft 10 with the intersection point of pivoted arm 1 as A
1, using in paintbrush 11 motion processes with gyroaxis 108 overlappings as B, establish OA
1=(a+b)/2, A
1b=(a-b)/2, wherein a, b is respectively the radius of major axis, minor axis, A
1b is around A
1point dextrorotation turns over 2 θ angles, obtains B
1thereby, form line segment A
1b
1, extend A
1b
1, build OAA such as ⊿ such as Xing such as lumbar triangle such as Deng
1,
∠A
1OA=∠OAA
1=θ
∠BA
1B
1=2θ
（1）
Put B
1ordinate
（2）
And
（3）
B
1abscissa is
（4）
So B
1coordinate be (acos θ, bsin θ),
（5）
Formula (5) is the parametric equation of an ellipse, that is to say B
1movement locus be an ellipse;
Due to a=OB, b=OA
1-A
1b, OA
1=(a+b)/2, A
1b=(a-b)/2.Pivoted arm 1 is marked with scale, can change OA by slippage L-type slide block 6
1length with stepless change major axis radius a, transverse axis 12 subscripts also have scale, change A by mobile L-type slide block 6
1the length of B is with stepless change minor axis radius b, because when pivoted arm 1 rotates 1 week, paintbrush 11 rotates 2 weeks, so draw when oval, pivoted arm 1 and paintbrush 11 have and are positioned at same plumbous plane for four times, now, nib lays respectively at four end points of major and minor axis, therefore, only need stir pivoted arm 1 and rotate a circle, can complete the drafting of a standard ellipse.
Move in a circle by pivoted arm 1, the engagement of bevel gear A2 and bevel gear B3 is simultaneously rotated gyroaxis 108, then, by the engaged transmission of bevel gear C4 and bevel gear D5, makes paintbrush 11 along with transverse axis 12 rotates around rotating shaft 10; Whole mechanism, by the engaged transmission of two pairs of bevel gears, makes pivoted arm 1 contrary with paintbrush 11 gyratory directions, and makes OA
1when at rotation the θ angle, A
1b rotates 2 θ angles, i.e. ∠ A
1oA=∠ OAA
1when=θ, ∠ BA
1a=2 θ, thus make B
1track be an ellipse, realize oval drafting, there is reasonable in design, simple in structure, easy to carry, easy and simple to handle, the stepless adjustable feature of major and minor axis radius, can draw the different ellipses that require, can be widely used in engineering or study reality, have broad application prospects.
Claims (5)
1. the stepless adjustable ellipsograph of major and minor axis radius, comprise a pivoted arm, it is characterized in that: be interspersed with a main shaft vertical with pivoted arm at pivoted arm front end, on main shaft, be set with a bevel gear A, bevel gear A engages with the bevel gear B of a side, bevel gear B is fixed on horizontal gyroaxis one end, be set with a bevel gear D in gyroaxis rear end, the bevel gear D bevel gear C longitudinal with is meshed, in bevel gear C, being fixed with one is synchronized with the movement to the rotating shaft of downward-extension with bevel gear C, the centre position place of rotating shaft is fixed with one and is the transverse axis at 90 ° of angles with rotating shaft, on transverse axis, be fixed with one with rotating shaft paintbrush in the same way.
2. the stepless adjustable ellipsograph of major and minor axis radius as claimed in claim 1, is characterized in that: the back-up block of the bevel gear rear sides of described gyroaxis by laying respectively at two groups of engagements is fixed on pivoted arm.
3. the stepless adjustable ellipsograph of major and minor axis radius as claimed in claim 1, is characterized in that: described L-type slide block is locked by lock-screw.
4. the stepless adjustable ellipsograph of major and minor axis radius as claimed in claim 1, is characterized in that: described bevel gear C and bevel gear D are separately fixed on two limits of same L-type slide block.
5. the stepless adjustable ellipsograph of major and minor axis radius as claimed in claim 1, is characterized in that: described L-type slide block can before and after slippage, thereby change the length of transverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168940.7U CN203780147U (en) | 2014-04-09 | 2014-04-09 | Ellipsograph with steplessly adjustable long and short axis radii |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168940.7U CN203780147U (en) | 2014-04-09 | 2014-04-09 | Ellipsograph with steplessly adjustable long and short axis radii |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203780147U true CN203780147U (en) | 2014-08-20 |
Family
ID=51316365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420168940.7U Expired - Fee Related CN203780147U (en) | 2014-04-09 | 2014-04-09 | Ellipsograph with steplessly adjustable long and short axis radii |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203780147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494339A (en) * | 2014-12-19 | 2015-04-08 | 柳州职业技术学院 | Mechanical ellipsometer |
| CN107116935A (en) * | 2017-05-25 | 2017-09-01 | 钦州学院 | Involute and oval Combined drawing device |
-
2014
- 2014-04-09 CN CN201420168940.7U patent/CN203780147U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494339A (en) * | 2014-12-19 | 2015-04-08 | 柳州职业技术学院 | Mechanical ellipsometer |
| CN104494339B (en) * | 2014-12-19 | 2016-04-06 | 柳州职业技术学院 | A kind of mechanical type ellipsograph |
| CN107116935A (en) * | 2017-05-25 | 2017-09-01 | 钦州学院 | Involute and oval Combined drawing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 |