CN2461779Y - Pascal scroll wire gauge - Google Patents
Pascal scroll wire gauge Download PDFInfo
- Publication number
- CN2461779Y CN2461779Y CN 01216170 CN01216170U CN2461779Y CN 2461779 Y CN2461779 Y CN 2461779Y CN 01216170 CN01216170 CN 01216170 CN 01216170 U CN01216170 U CN 01216170U CN 2461779 Y CN2461779 Y CN 2461779Y
- Authority
- CN
- China
- Prior art keywords
- pascal
- wheel
- fixed
- secondary sheave
- major trough
- 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
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Abstract
The utility model relates to an instrument for drawing the pascal helical lines, which is composed of a supporting rod, a guide rod, a pin shaft, a fixed shaft, a main grooved wheel, an auxiliary grooved pulley, and drawn lines, wherein, the upper end of the pin shaft is fixed with the auxiliary grooved pulley, and the bottom is fixed with a branched needle. The middle is hinged with one end of the supporting rod, and the upper end of the fixed shaft is fixed with the main grooved wheel. The middle is hinged with the other end of the supporting rod, and the bottom is fixed with one end of the guide rod. The other end of the guide rod is provided with a pen loading hole, and the auxiliary grooved wheel and the main grooved wheel are connected via the crossing drawn line. The utility model has the advantages of simple structure, quick drawing, and labor saving and draw different pascal helical lines according to requirements. The utility model can be used for teaching field, the field of engineering drawing, etc.
Description
The utility model belongs to the drawing instrument field, relates to a kind of on-circular-curve-drawing instrument.
There is not to draw specially the drawing instrument of pascal vortex line (being cardioid) at present in the teaching, several dismountable instrument combination modes of many employings are drawn, though these instruments are except that drawing pascal vortex line, can also draw other curve, but complex structure, inconvenience is slowly required great effort, used to the mapping process, preferably the requirement of adapt teaching and engineering drawing.
The utility model overcomes above-mentioned technical deficiency, provides a kind of being exclusively used in to draw pascal vortex line and simple in structure, the quick labour-saving pascal vortex line rule of mapping.
For achieving the above object, the utility model adopts following technical scheme: design a kind of Pascal scroll wire gauge, formed by support bar, guide post, bearing pin, dead axle, major trough wheel, secondary sheave and draught line, bearing pin upper end fixed joint sheave, fixedly jag acupuncture treatment of bottom, the middle part is hinged with an end of support bar, the dead axle upper end is the major trough wheel fixedly, the middle part is hinged with the other end of support bar, one end of bottom fixed guide pole, a hole is carried in the other end setting of guide post, and secondary sheave connects by the draught line that intersects with the major trough wheel.
Support bar of the present utility model is made up of threaded rod and two connection quarter butts, and machining internal threads respectively in two connection quarter butts, its two sections internal thread rotations are on the contrary, and described connection quarter butt is connected by threaded rod.Guide post by threaded rod, connect quarter butt and carry a penholder and form, connect quarter butt and carry in the penholder respectively machining internal thread, its two sections internal thread rotations are on the contrary, connect quarter butt and carry a penholder to be connected by threaded rod.Draught line is and intersect arranges, and an end of draught line is fixed on the major trough wheel, the other end intersect walk around major trough wheel and each two circle of secondary sheave after, pass towards the wheel end face through the upper taper of secondary sheave.Line length control flexure strip is set on the wheel end face of secondary sheave, and an end of flexure strip is fixed on the secondary sheave, and the other end is pressed on the draught line.
Draught line of the present utility model is and intersect arranges, and an end of draught line is fixed on the major trough wheel, the other end intersect walk around major trough wheel and each two circle of secondary sheave after, pass to the wheel end face along the upper inclined surface of secondary sheave.Line length control flexure strip is set on the wheel end face of secondary sheave, and an end of flexure strip is fixed on the secondary sheave, and the other end is pressed on the draught line.
The utility model is simple in structure, and mapping is quick laborsaving, and the different pascal vortex line of rendering parameter can be widely used in fields such as teaching, engineering drawing as requested.
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is that the A of Fig. 1 is to structural representation;
Fig. 3 is the draw bail schematic diagram that draught line connects major trough wheel, secondary sheave;
Fig. 4 is that the B of Fig. 3 is to structural representation.
As shown in the figure: the upper end fixed joint sheave 1 of bearing pin 9, middle part and quarter butt 3 are hinged, and quarter butt 3 can rotate around bearing pin 9, rotates in order to prevent secondary sheave 1, in the fixedly jag acupuncture treatment 2 of the bottom of bearing pin 9.Dead axle 8 upper ends are major trough wheel 7 fixedly, and the lower end is quarter butt 12 fixedly, and middle part and quarter butt 6 are hinged, and quarter butt 6 can rotate around dead axle 8.Draught line 4 connects major trough wheel 7 and secondary sheave 1.In order to guarantee that support bar (comprising quarter butt 3, threaded rod 5 and quarter butt 6) and guide rod (comprise quarter butt 12, threaded rod 11 and carry a penholder 10) make equidirectional, same angular turn, draught line 4 is to intersect and is provided with, and major trough wheel 7 is isometrical setting with secondary sheave 1.In order to prevent that draught line 4 from skidding at major trough wheel 7 and secondary sheave 1, an end of draught line 4 is fixed on the major trough wheel 7, the other end intersect walk around major trough wheel 7 and secondary sheave 1 each two circle after, pass towards the wheel end face through the upper taper of secondary sheave 1.Line length control flexure strip 13 is set on the wheel end face of secondary sheave 1, and an end of flexure strip 13 is fixed on the secondary sheave 1, and the other end is pressed on the draught line 4.When adjusting support bar length,
When drawing pascal vortex line (being cardioid), according to pascal vortex line equation ρ=acos θ+b, rotate threaded rod 5, adjust the length of support bar, making its length overall is a; Simultaneously the operating flexibility sheet 13, according to the length of the length adjustment draught line 4 of support bar.Rotate threaded rod 11, adjust the length of guide rod, making its length overall is b.Jag acupuncture treatment 2 is located, and stirs to carry a penholder 10, and quarter butt 12 drive major troughs wheels 7 are done to turn to together, same angular turn, under the pulling of draught line 4, support bar and guide rod are done to turn to together, same angular turn, are arranged on the pen that carries on the penholder 10 and move into a track, and trajectory is pascal vortex line.
Claims (5)
1. Pascal scroll wire gauge, it is characterized in that described scroll wire gauge is made up of support bar, guide post, bearing pin, dead axle, major trough wheel, secondary sheave and draught line, bearing pin upper end fixed joint sheave, fixedly jag acupuncture treatment of bottom, an end of middle part and support bar is hinged, and the dead axle upper end is the major trough wheel fixedly, the middle part is hinged with the other end of support bar, one end of bottom fixed guide pole, a hole is carried in the other end setting of guide post, and secondary sheave connects by the draught line that intersects with the major trough wheel.
2. Pascal scroll wire gauge according to claim 1 is characterized in that support bar is made up of threaded rod and two connection quarter butts, and machining internal threads respectively in two connection quarter butts, its two sections internal thread rotations are on the contrary, and described connection quarter butt is connected by threaded rod.
3. Pascal scroll wire gauge according to claim 1, it is characterized in that guide post by threaded rod, connection quarter butt and carry a penholder forming, connect quarter butt and carry in the penholder respectively machining internal thread, its two sections internal thread rotations are on the contrary, connect quarter butt and carry a penholder to be connected by threaded rod.
4. Pascal scroll wire gauge according to claim 1, it is characterized in that draught line is intersection setting, one end of draught line is fixed on the major trough wheel, the other end intersect walk around major trough wheel and each two circle of secondary sheave after, pass towards the wheel end face through the upper taper of secondary sheave.
5. according to claim 1 or 4 described Pascal scroll wire gauges, it is characterized in that on the wheel end face of secondary sheave line length control flexure strip being set, an end of flexure strip is fixed on the secondary sheave, and the other end is pressed on the draught line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01216170 CN2461779Y (en) | 2001-01-21 | 2001-01-21 | Pascal scroll wire gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01216170 CN2461779Y (en) | 2001-01-21 | 2001-01-21 | Pascal scroll wire gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2461779Y true CN2461779Y (en) | 2001-11-28 |
Family
ID=33634627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01216170 Expired - Fee Related CN2461779Y (en) | 2001-01-21 | 2001-01-21 | Pascal scroll wire gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2461779Y (en) |
-
2001
- 2001-01-21 CN CN 01216170 patent/CN2461779Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |