CN2166013Y - Large-radius arc plotting instrument - Google Patents
Large-radius arc plotting instrument Download PDFInfo
- Publication number
- CN2166013Y CN2166013Y CN 93243772 CN93243772U CN2166013Y CN 2166013 Y CN2166013 Y CN 2166013Y CN 93243772 CN93243772 CN 93243772 CN 93243772 U CN93243772 U CN 93243772U CN 2166013 Y CN2166013 Y CN 2166013Y
- Authority
- CN
- China
- Prior art keywords
- digital
- fixed
- graphometric square
- analogue
- plotting
- 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
Images
Abstract
The utility model relates to a large-radius arc plotting instrument belonging to the class of circular curve plotting instruments. The large-radius arc plotting instrument is mainly composed of a plotting ruler whose both ends can rotate, a digital-to-analog control device which prevents the plotting ruler form being deformed in a bow shape, a driving device, an indicating device and a locking device. The plotting ruler can move horizontally, and the cross sections of the plotting ruler are equal. The large-radius arc plotting instrument can be used for a large-radius arc whose plotting radius is from 600m/m to 1000m/m when the appearance and the structure of an industrial product are designed. The instrument has the advantages of small volume, light weight, and convenient usage. The utility model has dual functions for measurement and drawing. The utility model also has an intelligent auxiliary function and can help a designer to design.
Description
The utility model belongs to circular curve plotter class, particularly be the large radius arc surveying instrument.Anatomize and study the outward appearance of various industrial products, from commodity, household electrical appliance to communication, the vehicles, various process equipment, Industry Control and testing arrangement ..., be not difficult to find that curve and curved surface are moulded important component parts of product.This not only satisfies functional requirement, has also strengthened the appearance of product with natural and tripping lines, has improved the value of product.
In the appearance design, the radius of curvature of the face of cylinder, sphere is generally very big, and the hundreds of millimeter of being everlasting is to more than thousands of millimeters, different sensations such as look product function, volume has different choice, gives smoothness, and is serious, luxurious.Strengthen appearance, improve the competitiveness.
In the general plotter, compasses are drawn radius and are no more than 300m/m after inserting extension bar.When needs are drawn the way of long radius camber line below adopting often:
A. make stock and plan, R is big more, and bar is long more, and a people can not independent operation, and because of being subjected to spatial constraints, the center is not difficult to find, operating difficulties;
B. earlier on thin plate, draw circular arc by the way of A, make model then, draw with model at last;
C. with the way of calculating, mark some in the circular arc, be linked to be level and smooth curve with spline then.
Above-mentioned the whole bag of tricks, all inconvenient, efficient is low, is subjected to spatial constraints, operating difficulties sometimes.
The purpose of this utility model be to provide a kind of volume little, in light weight, carry, operate all drawing instrument very easily, in order to measure the circular arc line of drawing long radius.
The purpose of this utility model is achieved in that the large radius arc surveying instrument mainly comprises graphometric square, digital-to-analogue control device, transmission device, indicating device and locking device.The two ends that are fixed on the guide plate 11 on the substrate 13 are fixed with limiting plate 18, slide block 15 is housed in the hole slot of limiting plate 18, the axle at uiform section straight-bar graphometric square 2 two ends is fixed in the axis hole of slide block 15, several control points are set on the graphometric square 2, the digital-to-analogue control device that the gag lever post assembly 7 that passes guide plate 11 and digital-to-analogue projection 8 constitute is equipped with at place, each control point, digital-to-analogue projection 8 is fixedlyed connected with the slide block 9 in both sides up and down are contained in slide guide strip 10, and slide guide strip 10 is fixed on the substrate 13; End at graphometric square 2 is provided with the transmission device that drives slide block 9 horizontal movements, the dial plate wheel 4 and the driving member 12 that drive dial plate 16 rotations are housed on transmission device axle 14, one end of axle 14 is fixed on the substrate 13, the other end is equipped with clip 19, side at transmission device is equipped with the locking device 6 that makes the transmission device stop motion, and it mainly is made up of lock-button 5, tapered wedges 20, depression bar 21, and depression bar 21 heads are pressed close to transmission device, bar portion is with spring, afterbody and tapered wedges 20 CONTACT WITH FRICTION; Power transmission shaft 14, locking device 6 all are fixed on the substrate 13, and substrate 13 is fixed on the panel 1.The structure of digital-to-analogue control device is as follows:
The slide bar 74 of limit pull rod assembly 7 is passing on the guide plate 11 behind the fixed block, be contained in the groove at graphometric square 2 control points, upper pressure wheel 73 is equipped with on its top, on the slide bar 74 below guide plate 11 spring 77 is housed, the lower end of slide bar 74 is inserted in down in the counterbore of fixed block 76, fixed block 78 up and down, 76 and slide bar 74 fixing in aggregates by both sides clamping plate 71, between the lower surface of graphometric square and the last fixed block 78, two of slide bar 74 is surveyed top wheel 72 is housed, its axle one end is supported by clamping plate 71, the other end is supported by last fixed block 78, pulley 75 is housed below the following fixed block 76, and its axle is surveyed clamping plate 71 by two and is supported the race of pulley 75 and digital-to-analogue projection 8 frictional fit.
The long relation of the least radius value of graphometric square and chi should be able to satisfy formula Rmin 〉=2L, and L is a graphometric square length, Rmin graphometric square least radius value.
The number of digital-to-analogue projection equates with the gag lever post component count, satisfies formula 2n-1 relation, n=1,2,3 ...
The initial least radius Rmin of long radius surveying instrument chooses like this.China population average height male sex is 1.58M for 1.68M women's height.Relying on the human body self effect, even without specific purpose tool, is not difficult using the very little line of distortion, bar to draw radius at the circular arc under the 1000m/mm.For this reason, the surveying instrument Rmin=600m/m that uses of Graphing of Engineering.Metaller, mould worker use surveying instrument Rmin=1000m/m.
The utility model is made with following principle, and an end is the other end flexible straight-bar of uiform section freely fixedly, is arc deformation under external force.If it is deformation is very for a short time to be thought when chord length is approximately equal to arc length, then close with arc circular arc around curve.
The utility model is done graphometric square with the uiform section straight-bar, and it is very little to make chord length and arc length compare variation when deformation takes place.Deformation when taking place in graphometric square, and it is arc that projection is, but the center can not be moved by the level string by the gag lever post constraint.And two ends can micro-ly in the horizontal direction be moved, and assign them as free end.
The utility model compared with prior art has the following advantages:
1. draw large radius arc and broken through traditional way, need not special use plan,, need not make model, improved operating efficiency greatly without spline;
2. adjustable continuously because of the chi value of circular arc, mapping is convenient, its existing survey with paint dual-use function, have intelligent miscellaneous function again, can assist the designer to conceive.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
Fig. 1 panel layout of the present utility model;
Fig. 2 transmission diagram of the present utility model;
The assembly structure figure of Fig. 3 gag lever post assembly 7;
Fig. 4 transmission device sectional drawing;
Fig. 5 graphometric square two ends mounting structure figure.
For plumber, the mould worker least radius with graphometric square: Rmin=1000m/m is that example is introduced the large radius arc surveying instrument.The length of determining a uiform section straight-bar graphometric square 2 according to the Rmin value should be able to satisfy formula Rmin 〉=2L, L: graphometric square length; Rmin graphometric square least radius value.By following formula as can be known: L=Rmin/2; L=500m/m.
The large radius arc surveying instrument mainly comprises graphometric square, digital-to-analogue control device, transmission device, indicating device and locking device.As Fig. 2～shown in Figure 5, the two ends that are fixed on the guide plate 11 on the substrate 13 are fixed with limiting plate 18, and slide block 15 is housed in the hole slot of limiting plate 18.Length is that the axle at uiform section straight-bar graphometric square 2 two ends of 500m/m is fixed in the axis hole of slide block 15, graphometric square 2 two ends can be rotated and move left and right in the horizontal direction, but amount of movement is very little, and when R was minimum of a value, the displacement of every end left and right directions was no more than 1m/m.5 control points are set on the graphometric square 2, and the digital-to-analogue control device that the gag lever post assembly 7 that passes guide plate 11 and digital-to-analogue projection 8 constitute is equipped with at place, each control point, and digital-to-analogue projection 8 and gag lever post assembly 7 numbers equate, 5 controls are just counted, and satisfy the relation of formula 2n-1, n=1,2,3 ...Digital-to-analogue projection 8 is fixedlyed connected with the slide block 9 in both sides up and down are contained in slide guide strip 10, and slide guide strip 10 usefulness nuts are fixed on the substrate 13.As shown in Figure 4, end at graphometric square 2 is provided with the gear drive that drives slide block 9 horizontal movements, the dial plate wheel 4 and the gear 12 that drive dial plate 16 rotations are equipped with in this also available nut screw transmission of device or rack-and-pinion transmission or worm gear, worm-drive or the transmission of awl tooth on power transmission shaft 14.One end of axle 14 is fixed on the substrate 13 with nut 17, and the other end is fixing with clip 19.Side at transmission device is equipped with the wedge friction lock devices 6 that makes the gear stop motion, and it mainly is made up of lock-button 5, tapered wedges 20, depression bar 21, and depression bar 21 heads are pressed close to transmission device, and bar portion is with the compression spring, afterbody and tapered wedges 20 CONTACT WITH FRICTION.Axle 14, locking device 6 all are fixed on the substrate 13, and substrate 13 is fixed on the panel 1.Also can adopt feed screw nut to make locking device.
The structure of digital-to-analogue control device is as follows: as shown in Figure 3, after the slide bar of limit pull rod assembly 7 passes the guide plate of making of shaped steel or aluminium alloy 11 and last fixed block 78, be contained in the groove at graphometric square 2 control points, upper pressure wheel 73 is equipped with on its top, the height of the slide bar 74 below guide plate 11 is 30m/m, and five height equates, spring 77 is housed on it, the lower end of slide bar 74 is inserted in down in the counterbore of fixed block 76, and fixed block 78,76 and slide bar 74 are fixed into one by both sides clamping plate 71 by screw up and down.Between the lower surface of graphometric square 2 and the last fixed block 78, the both sides of slide bar 74 are equipped with top wheel 72, its axle one end is by clamping plate 71 supportings, the other end is by last fixed block 78 supportings, pulley 75 is housed below the following fixed block 76, its axle is by 71 supportings of both sides clamping plate, the race of pulley 75 and digital-to-analogue projection 8 frictional fit.
The working condition of large radius arc surveying instrument: when button handsetting 3, the slide block 9 of toothed belt moves horizontally, the digital-to-analogue projection 8 that is fixed on the slide block is synchronized with the movement, projection 8 promotes vertical limit pull rod 7 motions, because graphometric square 2 is subjected to the constraint of gag lever post, chi is identical with the gag lever post rise at each gag lever post place rise, and the gag lever post rise is again the digital-to-analogue projection amount of height of this moment.Gag lever post can only be done and move up and down, and moving direction is subjected to guide plate 11 constraints.The horizontal movement of slide block 9 is subjected to the constraint of slide guide strip 10.During slide block 9 horizontal movements, driven gear 12 rotates, so dial plate 4 rotates, scale 16 also rotates, graduation mark indication R value.
In mapping, when needs graphometric square 2 is not mobile, move lock-button 5, by tapered wedges 20 effect, the depression bar 21 of locking device 6 is withstood on the locking wheel on the dial plate wheel 4, wheel does not change, and chi is motionless.
The operating position of large radius arc surveying instrument is: when the radius on stirring panel 1 is selected button 3, graphometric square 2 projections, it is arc that the chi face is circular arc, and R is more little for arc radius, and chi face projection is high more, meanwhile, 4 rotations of dial plate wheel when the R value on the required dial plate 16 of the note of the calibration indicator sign on shell aligning, can be moved lock-button 5, dial plate no longer rotates, so that draw circular arc.When drawing large radius arc on drawing, if center line is set, the vertex position of circular arc is also set, and button handsetting 3 during drafting, after radius to occur be R arc, chi face center line is alignd with the setting summit, and the horizontal direction of chi is vertical with the center line of setting.When measuring arc radius, button handsetting 3 makes chi 2 surfaces survey circular arc line with desire and fits like a glove, and the R value on the scale 16 that this moment, cue mark was pointed out is the R value of measured circular arc.
Claims (4)
1, a kind of large radius arc surveying instrument, mainly comprise graphometric square, the digital-to-analogue control device, transmission device, indicating device and locking device, it is characterized in that: the two ends that are fixed on the guide plate 11 on the substrate 13 are fixed with limiting plate 18, slide block 15 is housed in the hole slot of limiting plate 18, the axle at uiform section straight-bar graphometric square 2 two ends is fixed in the axis hole of slide block 15, several control points are set on the graphometric square 2, the digital-to-analogue control device that the gag lever post assembly 7 that passes guide plate 11 and digital-to-analogue projection 8 constitute is equipped with at place, each control point, digital-to-analogue projection 8 is fixedlyed connected with the slide block 9 in both sides up and down are contained in slide guide strip 10, and slide guide strip 10 is fixed on the substrate 13; End at graphometric square 2 is provided with the transmission device that drives slide block 9 horizontal movements, the dial plate wheel 4 and the driving member 12 that drive dial plate 16 rotations are housed on transmission device axle 14, one end of axle 14 is fixed on the substrate 13, the other end is equipped with clip 19, side at transmission device is equipped with the locking device 6 that makes the transmission device stop motion, and it mainly is made up of lock-button 5, tapered wedges 20, depression bar 21, and depression bar 21 heads are pressed close to transmission device, bar portion is with spring, afterbody and tapered wedges 20 CONTACT WITH FRICTION; Power transmission shaft 14, locking device 6 all are fixed on the substrate 13, and substrate 13 is fixed on the panel, and the structure of digital-to-analogue control device is as follows:
The slide bar 74 of limit pull rod assembly 7 is passing on the guide plate 11 behind the fixed block, be contained in the groove at graphometric square 2 control points, upper pressure wheel 73 is equipped with on its top, on the slide bar 74 below guide plate 11 spring 77 is housed, the lower end of slide bar 74 is inserted in down in the counterbore of fixed block 76, fixed block 78 up and down, 76 and slide bar 74 to survey clamping plate 71 by two fixing in aggregates, between the lower surface of graphometric square and the last fixed block 78, two of slide bar 74 is surveyed top wheel 72 is housed, its axle one end is supported by clamping plate 71, the other end is supported by last fixed block 78, pulley 75 is housed below the following fixed block 76, and its axle is surveyed clamping plate 71 by two and is supported the race of pulley 75 and digital-to-analogue projection 8 frictional fit.
2, large radius arc surveying instrument according to claim 1 is characterized in that the least radius value of graphometric square and the relation of chi length should be able to satisfy formula Rmin 〉=2L, and L is a graphometric square length, Rmin graphometric square least radius value.
3, large radius arc surveying instrument according to claim 1 is characterized in that the number of digital-to-analogue projection equates with the gag lever post component count, satisfies formula 2n-1 relation, n=1,2,3 ...
4, large radius arc surveying instrument according to claim 1 is characterized in that the slide bar 74 in each gag lever post assembly is highly equal, and the height H=0.06L of slide bar under guide plate 11, L are the length of graphometric square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243772 CN2166013Y (en) | 1993-11-06 | 1993-11-06 | Large-radius arc plotting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243772 CN2166013Y (en) | 1993-11-06 | 1993-11-06 | Large-radius arc plotting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2166013Y true CN2166013Y (en) | 1994-05-25 |
Family
ID=33817155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93243772 Expired - Fee Related CN2166013Y (en) | 1993-11-06 | 1993-11-06 | Large-radius arc plotting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2166013Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411885C (en) * | 2006-02-16 | 2008-08-20 | 浙江建设职业技术学院 | Large scale profilogram fixing plate |
| CN108801232A (en) * | 2018-08-07 | 2018-11-13 | 河南科技大学 | A kind of construction graphometric square |
-
1993
- 1993-11-06 CN CN 93243772 patent/CN2166013Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411885C (en) * | 2006-02-16 | 2008-08-20 | 浙江建设职业技术学院 | Large scale profilogram fixing plate |
| CN108801232A (en) * | 2018-08-07 | 2018-11-13 | 河南科技大学 | A kind of construction graphometric square |
| CN108801232B (en) * | 2018-08-07 | 2023-09-29 | 河南科技大学 | Surveying and mapping ruler for building construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2166013Y (en) | Large-radius arc plotting instrument | |
| CN108414344B (en) | Stroke adjusting structure of high-low temperature rubber stretching fatigue testing machine | |
| CN2047778U (en) | Symmetry measuring instrument for keyseat on a shaft | |
| CN201607210U (en) | Cam measuring instrument | |
| CN213616246U (en) | Steel bar diameter measuring equipment for engineering supervision | |
| CN2157485Y (en) | Rail fractured surface measurer | |
| CN2784874Y (en) | Mold taper measurer for continuous casting machine | |
| CN211427650U (en) | Novel mechanics physics experimental apparatus | |
| CN2663976Y (en) | Integrated guide rail type mechanical electronic resiliometer | |
| CN215435778U (en) | Mathematics geometry drawing teaching aid | |
| CN214747723U (en) | Measuring tool convenient for architectural design | |
| CN219416051U (en) | Engineering construction is with multi-functional angle measuring apparatu | |
| CN220062874U (en) | Inside and outside diameter three-point measuring instrument | |
| CN213167524U (en) | Uniform tool convenient for angle conversion | |
| CN213812192U (en) | Detection device for precision calibration of three-coordinate measuring machine | |
| CN210242749U (en) | Edge angle detection device in sliding type cylinder | |
| CN211783225U (en) | Measuring scale for railway design | |
| CN2257600Y (en) | Digital display steel rail wear measuring apparatus | |
| CN2460322Y (en) | Multifunction teaching ruler | |
| CN2451350Y (en) | Multipurpose combined ruler | |
| CN2585625Y (en) | Calliper gauge | |
| CN2653442Y (en) | Straight line degree measuring tool | |
| CN106979834B (en) | Abbe head force measuring system of length measuring machine and control system thereof | |
| CN2108896U (en) | Clinometer | |
| CN2606683Y (en) | Line section equivalent scale |
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 |