CN104084942A - Compasses - Google Patents
Compasses Download PDFInfo
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- CN104084942A CN104084942A CN201410367379.XA CN201410367379A CN104084942A CN 104084942 A CN104084942 A CN 104084942A CN 201410367379 A CN201410367379 A CN 201410367379A CN 104084942 A CN104084942 A CN 104084942A
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- compasses
- compass leg
- groove
- draw
- leg
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Abstract
The invention relates to compasses, in particular to multipurpose compasses which can draw circles on a hollow circular workpiece. The compasses comprise a compasses head, compasses legs and compasses points and are characterized in that a limiting and centring device is arranged on one compasses leg and arranged close to the corresponding compasses point. Due to the additional arrangement of the limiting and centring device on one compasses leg, the compasses have the use performance of common compasses and can draw concentric circles on the hollow circular workpiece and a cylindrical workpiece with the circle center protruding high, operation is easy and convenient and saves labor, and the compasses are simple in structure and scientific in design.
Description
Technical field
The present invention relates to a kind of compasses, be specifically related to a kind of can be at the Napier's compasses of open circles workpiece upper drawing circle.
Technical background
Compasses are that it is lever, is also wheel shaft, is also marking gauge for the instrument of picture circle and circular arc.Compasses make normally metal, comprise three part compasses heads, compass leg and compasses point, wherein the subtended angle of compass leg can adjust.
In bench work, sometimes need on open circles workpiece, draw concentric circles, sometimes need on the higher cylindrical work of position, center of circle projection, draw concentric circles, because the centering pin of compasses cannot be positioned on the center of circle, and cause drawing circle.The conventional compasses of pincers worker are possessing the plane upper drawing circle of solid circles only at present, need picture bowlder for the workpiece of open circles, cannot directly use, must insert core or add other Filled Dielectrics in open circles, just now can the center of circle behind the centering center of circle be fixed point, mark circumference, complex steps with compasses, lose time, use common compasses to be difficult to especially realize for draw concentric circles on the higher cylindrical work of position, center of circle projection; CN201220440551 discloses a kind of compasses, backstay is set in regulator, and backstay one end arranges positioning handle, and the other end arranges locating shaft, tap web bar is installed in cone bottom, tap web bar vertically connects scale, and alignment pin is set on scale, and alignment pin connects compass needle, can automatically realize the center of circle of hollow pipe accurately locates, save man-hour, but this kind of compasses are limited to hollow big or small fitness, and can not on the cylindrical workpiece end face of position, center of circle projection, draw concentric circles.
Summary of the invention
For the existing above-mentioned deficiency of existing compasses, the object of this invention is to provide a kind of Napier's compasses, by set up spacing centring means at compass leg, make compasses not only can there is the serviceability of common compasses but also can on any open circles workpiece and the higher cylindrical work of position, center of circle projection, draw concentric circles, simple to operation, save time, and simple in structure, design science.
The technical scheme that the present invention adopted is for achieving the above object:
A kind of compasses, it comprises compasses head, compass leg, compasses point; On a described compass leg, be provided with spacing centring means, described spacing centring means is arranged near compasses point.
Preferably, described spacing centring means comprises slide plate and the first holding screw, described slide plate middle part is provided with strip perforate, and be connected with compass leg through described strip perforate by the described tight first solid screw, described slide plate lower end is provided with breach, and described breach correspondence another compass leg.
Further, described breach comprises and is parallel to the limit of compass leg direction and the limit perpendicular to compass leg.
Further, the described limit that is parallel to compass leg has two, and these two distances that are parallel to the limit of compass leg are 0.5cm-4cm.
Preferably, described spacing centring means comprises sliding rod, cover plate, the second holding screw and the first groove, described the first groove is arranged on the outside of a described compass leg and along the setting of a described compass leg direction, described sliding rod is arranged in described the first groove, described cover plate covers described sliding rod and is welded on a described compass leg, on described cover plate, be provided with screwed hole, described the second holding screw is arranged on the described screwed hole arranging on described cover plate and after screwing can prop up described sliding rod.
Further, described sliding rod middle part is provided with the second groove.
Further, the excellent lower end of described cunning is provided with two legs, and the end of described two legs is at a distance of 0.5cm-4cm.
Further, described compasses, it also comprises the ruler with scale, the zero graduation place of described ruler is connected with a compass leg of described compasses by bearing pin, the plane parallel at the plane of described ruler and two compass leg places.
Further, be provided with the draw-in groove of protrusion on another compass leg of described compasses, described draw-in groove equals the described bearing pin distance to compasses head to the distance of compasses head, and described draw-in groove and ruler are in the same side of compasses.
Further, the compasses point on the compass leg at described compasses head, bearing pin and bearing pin place is on same straight line, and the compasses point on described compasses head draw-in groove and the compass leg at draw-in groove place is on same straight line.
After using said structure, the invention has the beneficial effects as follows: by set up spacing centring means at compass leg, make compasses can not draw concentric circles as the end face of the cylindrical work of fulcrum at open circles workpiece or the center of circle by the strong point as compasses point using the edge of workpiece, be parallel to the limit of compass leg or lower end be set the sliding rod with two legs by there are two in carriage setting, make compasses there are two fulcrums on workpiece circular arc limit in the time of work, ensure that picture bowlder radius is constant; Slide plate or sliding rod are set on spacing centring means, by regulating compasses to make compasses have common calipers function concurrently; Be provided with in addition ruler and the draw-in groove of scale at compass leg, can directly in the time of mapping, read at any time fulcrum to circular arc distance.
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is further described.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of embodiment 1 and embodiment 3 in a kind of situation of the present invention;
Fig. 2 is the overall structure schematic diagram of embodiment 1 and embodiment 3 in the another kind of situation of the present invention;
Fig. 3 is the structural representation of spacing centring means in Fig. 1;
Fig. 4 is the overall structure schematic diagram of the embodiment of the present invention 2;
Fig. 5 is the spacing centring means structural representation of Fig. 4;
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1: referring to Fig. 1～Fig. 3, a kind of compasses that the present embodiment provides, it comprises compasses head 1, compass leg 2, compasses point 3; It is characterized in that, on a described compass leg 2, be provided with spacing centring means 4, described spacing centring means 4 is arranged near compasses point 3.
Embodiment 2: described spacing centring means 4 comprises slide plate 41 and the first holding screw 42, described slide plate middle part is provided with strip perforate 43, and be connected with a described compass leg 2 through described strip perforate 43 by described the first holding screw 42, described slide plate 46 lower ends are provided with breach 44, and described breach 44 correspondences another compass leg 2.
Described breach 44 includes and is parallel to the limit 46 of compass leg direction and the limit 45 perpendicular to compass leg, and it is respectively used at workpiece end face and arc surface spacing.
The described limit that is parallel to a described compass leg 45 has two, and the distance that is parallel to the limit 45 of compass leg described in these two is 0.5cm-4cm; So can make compasses have two at workpiece circular arc face limiting foothold, ensure that two compasses point 3 and the center of circle are on same straight line, make the radius of circle that draws more accurate.
Embodiment 3: referring to Fig. 4～Fig. 5, a kind of compasses that the present embodiment provides, it comprises compasses head 1, compass leg 2, compasses point 3; On a described compass leg 2, be provided with spacing centring means 4, described spacing centring means 4 is arranged near compasses point 3.Described spacing centring means 4 comprises sliding rod 401, cover plate 402, holding screw 403 and the first groove 404, described the first groove 404 is arranged on the outside of compass leg 2 and along compass leg 2 direction settings, described sliding rod 401 is installed in the first groove 404, described cover plate 402 covers sliding rod 401 and is welded on compass leg 2, on described cover plate 402, be provided with screwed hole 405, described holding screw 403 is arranged on the described screwed hole 405 on cover plate 402 and after screwing can prop up described sliding rod 401, so design can be fixed sliding rod 401 in the time screwing holding screw 403, while unscrewing holding screw 403, regulate sliding excellent 401 positions.
Excellent 401 middle parts of described cunning are provided with the second groove 406, make sliding rod 402 can within the scope of the second groove length, slide and be difficult for skidding off disengaging compasses.
Excellent 401 lower ends of described cunning are provided with two legs 407, and two the end of leg 407 is at a distance of 0.5cm-4cm, so design is drawn bowlder at round piece end face, can be by sliding rod 401 toward gliding, with compasses point at workpiece end face upper limit, with leg, at workpiece circular arc face upper limit, two legs can limit two compasses points on radius of a circle simultaneously.
Described compasses, it also comprises the ruler 5 with scale, the zero graduation place of described ruler 5 is connected with a compass leg 2 of described compasses by bearing pin 6, the plane parallel at the plane of described ruler 5 and two compass leg 2 places.
On another compass leg of described compasses, be provided with the draw-in groove 7 of protrusion, the bearing pin 3 described in described draw-in groove equals to the distance of compasses head 1 is to the distance of compasses head 1, and described draw-in groove 7 and ruler 5 the same side at compasses.
Compasses point 3 on the compass leg 2 at described compasses head 1, bearing pin 7 and bearing pin 7 places is on same straight line, and the compasses point 3 on the compass leg 2 at described compasses head 1, draw-in groove 7 and draw-in groove 7 places is on same straight line.
So design, 3 scale L on ruler, with the ratio account form of master scale A is:
L:A＝l1/l2
In formula: l1 is the distance of compasses head 1 to compasses point 3, l2: compasses head 1 is to the distance of bearing pin 6; The scale of the ratio setting ruler 5 calculating according to above formula account form, puts into draw-in groove 7 by ruler 5 and just can directly read two distances between compasses point 3.
The bearing pin 6 of described fixing ruler 5, at the point midway of compasses head 1 and compasses point 3 lines, so designs, and the scale on ruler 5 is set to the twice of master scale.
Described compasses point 3 is metal material, can directly on workpiece, draw cut, easy to use.
Described compasses point 3 comprises pin and tip, described pin is back to described tip, described compass leg 2 ends arrange porose, described compasses point 3 inserts compass leg 2 ends hole by pin is connected with compass leg 2, so can change compasses point 2, in the time of hard workpiece upper drawing circle arc, use the compasses point 2 of metal material, in the time of paper material upper drawing circle arc, use lead for retractable pencil compasses point 2.
Described compass leg 2 has three, wherein on two legs with metal compasses point 3, on a leg with the compasses point 3 of lead for retractable pencil, spacing centring means 4 is arranged on the compass leg 2 with metal compasses point 3, so in the time of hard workpiece upper drawing circle arc, can use the compasses point 2 of two metal materials, in the time of paper material upper drawing circle arc, use the compasses point 2 of a lead for retractable pencil compasses point 2 and a metal material.
Described compasses do not arrange on the compass leg 2 of spacing centring means 4 and are provided with disk, on described disk, be provided with metal compasses point 3 and lead for retractable pencil compasses point 3, described disk is connected with compass leg by holding screw, so design can, by regulating disk to exchange compasses point 3, can make compasses adapt to more convenient in hard workpiece and paper material upper drawing circle arc.
In use, slide plate 41 or sliding excellent 401 is slided into top can be at plane picture circle in the present invention; Regulate glide available breach 44 or block with sliding excellent 401 lower ends and compasses point 3 cylindrical workpiece inner circle edge or the outer circular edge that open circles workpiece or the center of circle cannot serve as fulcrum and get final product picture concentric circles along circumferential slippage of slide plate 41 or sliding rod 401, easy to use, operate letter, singly save time.
After using said structure, the invention has the beneficial effects as follows: by set up spacing centring means 4 at compass leg 2, make compasses can not draw concentric circles as the end face of the cylindrical work of fulcrum at open circles workpiece or the center of circle using the edge of workpiece as the strong point, be parallel to the limit 45 of compass leg or lower end be set the sliding rod with two legs by thering are two in spacing centring means 4 settings, make compasses there are two fulcrums 407 on workpiece circular arc limit in the time of work, ensure that picture bowlder radius is constant; Slide plate 41 or sliding rod 401 are set on spacing centring means 4, move by regulating on slide plate 41 or sliding rod 401 conventional func that does not affect compasses; Be provided with in addition ruler 5 and the draw-in groove 7 of scale at compass leg 2, can directly in the time of mapping, read at any time fulcrum to circular arc distance.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, amendment and environment, and can, in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection domain of claims of the present invention.
Claims (10)
1. compasses, it comprises compasses head, compass leg, compasses point, it is characterized in that, on a compass leg, is provided with spacing centring means, described spacing centring means is arranged near described compasses point.
2. compasses according to claim 1, it is characterized in that, described spacing centring means comprises slide plate and the first holding screw, described slide plate middle part is provided with strip perforate, described the first holding screw is connected with a described compass leg through described strip perforate, described slide plate lower end is provided with breach, and described breach correspondence another compass leg.
3. compasses according to claim 2, is characterized in that, described breach comprises and is parallel to the limit of compass leg direction and the limit perpendicular to compass leg.
4. compasses according to claim 3, is characterized in that, described in be parallel to compass leg limit have two, and the distance that is parallel to the limit of compass leg described in two is 0.5cm-4cm.(two limits are all parallel to compass leg, and distance equates, does not have minimum distance).
5. compasses according to claim 1, it is characterized in that, described spacing centring means comprises sliding rod, cover plate, the second holding screw and the first groove, described the first groove is arranged on the outside of a described compass leg and along the setting of a described compass leg direction, described sliding rod is arranged in described the first groove, described cover plate covers described sliding rod and is welded on a described compass leg, on described cover plate, be provided with screwed hole, described the second holding screw is arranged on the described screwed hole on described cover plate and after screwing can prop up described sliding rod.
6. compasses according to claim 5, is characterized in that, described sliding rod middle part is provided with the second groove.
7. compasses according to claim 6, is characterized in that, the excellent lower end of described cunning is provided with two legs, and the end of described two legs is at a distance of 0.5cm-4cm.
8. according to the compasses described in claim 4 or 7, it is characterized in that, comprise the ruler with scale, the zero graduation place of described ruler is connected with a described compass leg of described compasses by bearing pin, the plane parallel at the plane of described ruler and two compass leg places.
9. compasses according to claim 8, it is characterized in that, on another of described compasses compass leg, be provided with the draw-in groove of protrusion, described draw-in groove equals described bearing pin to the distance of described compasses head to the distance of described compasses head, and described draw-in groove and described ruler are in the same side of told compasses.
10. compasses according to claim 9, is characterized in that, the compasses point on the compass leg at described compasses head, bearing pin and bearing pin place is on same straight line, and the compasses point on the compass leg at described compasses head draw-in groove and draw-in groove place is on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367379.XA CN104084942B (en) | 2014-07-29 | 2014-07-29 | A kind of compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410367379.XA CN104084942B (en) | 2014-07-29 | 2014-07-29 | A kind of compasses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104084942A true CN104084942A (en) | 2014-10-08 |
| CN104084942B CN104084942B (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410367379.XA Active CN104084942B (en) | 2014-07-29 | 2014-07-29 | A kind of compasses |
Country Status (1)
| Country | Link |
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| CN (1) | CN104084942B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108656090A (en) * | 2018-07-11 | 2018-10-16 | 南通理工学院 | A kind of mechanical arm assembly and the control unit for controlling the mechanical arm assembly |
| CN110405313A (en) * | 2019-08-22 | 2019-11-05 | 中船黄埔文冲船舶有限公司 | A kind of hull opens circular hole tooling |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200107U (en) * | 1987-01-08 | 1987-11-04 | 刘超 | Compass with scale |
| US4815881A (en) * | 1987-11-25 | 1989-03-28 | Chern Biing Hwang | Multi-purpose combination writing instrument |
| CN2048416U (en) * | 1988-05-14 | 1989-11-29 | 四川石油管理局川东开发公司 | Multi-funcitonal scribe compasses |
| CN2050365U (en) * | 1989-04-22 | 1990-01-03 | 罗宏 | Multi-purpose scriber with automatic centring |
| CN2061901U (en) * | 1989-12-27 | 1990-09-12 | 杨琴莲 | No positioning centre compass |
| EP0311710B1 (en) * | 1987-10-15 | 1990-09-19 | Kiefer, Klaus Jürgen | Gauge compass |
| CZ1474U1 (en) * | 1993-12-13 | 1994-02-18 | Jiří Nešuta | Device for cutting out circular holes |
| JPH1044067A (en) * | 1996-07-26 | 1998-02-17 | Tadao Usami | Marking tool |
| CN2459184Y (en) * | 2000-12-28 | 2001-11-14 | 李东峰 | Compasses with rule |
| CN202293904U (en) * | 2011-09-07 | 2012-07-04 | 刘元卿 | Safety compass |
-
2014
- 2014-07-29 CN CN201410367379.XA patent/CN104084942B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200107U (en) * | 1987-01-08 | 1987-11-04 | 刘超 | Compass with scale |
| EP0311710B1 (en) * | 1987-10-15 | 1990-09-19 | Kiefer, Klaus Jürgen | Gauge compass |
| US4815881A (en) * | 1987-11-25 | 1989-03-28 | Chern Biing Hwang | Multi-purpose combination writing instrument |
| CN2048416U (en) * | 1988-05-14 | 1989-11-29 | 四川石油管理局川东开发公司 | Multi-funcitonal scribe compasses |
| CN2050365U (en) * | 1989-04-22 | 1990-01-03 | 罗宏 | Multi-purpose scriber with automatic centring |
| CN2061901U (en) * | 1989-12-27 | 1990-09-12 | 杨琴莲 | No positioning centre compass |
| CZ1474U1 (en) * | 1993-12-13 | 1994-02-18 | Jiří Nešuta | Device for cutting out circular holes |
| JPH1044067A (en) * | 1996-07-26 | 1998-02-17 | Tadao Usami | Marking tool |
| CN2459184Y (en) * | 2000-12-28 | 2001-11-14 | 李东峰 | Compasses with rule |
| CN202293904U (en) * | 2011-09-07 | 2012-07-04 | 刘元卿 | Safety compass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108656090A (en) * | 2018-07-11 | 2018-10-16 | 南通理工学院 | A kind of mechanical arm assembly and the control unit for controlling the mechanical arm assembly |
| CN110405313A (en) * | 2019-08-22 | 2019-11-05 | 中船黄埔文冲船舶有限公司 | A kind of hull opens circular hole tooling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104084942B (en) | 2017-03-29 |
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