CN2571602Y

CN2571602Y - Dial compasses

Info

Publication number: CN2571602Y
Application number: CN 02259863
Authority: CN
Inventors: 万方勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2003-09-10
Anticipated expiration: 2012-09-30

Abstract

The utility model discloses dial compasses which comprise a drawing needle, compass legs, sleeves of the compass legs, a cover of a connecting screw, a support bracket of a screw rod, a cutting sleeve, an adjusting nut of the screw rod, etc., wherein, a dial is arranged on the cutting sleeve. A circular arc bisector for equally dividing a circular arc is respectively arranged on the compass legs. The utility model can be used for rapidly and accurately adjusting a radius of a drawing circle and equally dividing the circular arc, and is especially suitable for asymmetrically and equally dividing the circular arc, such as 7 equal division circular arc, and 9 equal division circular arc; when a circle is drawn by adjusting the radius of the circle, no ruler or other accessories are needed, and the work efficiency and accuracy rate of entity scribing on site are enhanced.

Description

Dial compasses

Technical field: the utility model relates to a kind of divider calipers, particularly a kind of Dial compasses with scale.

Background technology: draw bowlder with compasses or divider calipers in mechanical drawing and pincers worker line, all be to draw circle again after reserving radius of a circle with chi earlier, but this picture circle method error is bigger, when particularly diameter of a circle is odd number, drawn circular diameter error is then bigger, in addition when the five equilibrium circular arc, generally all be to use geometrograph, the divider calipers that does not have not only to draw circle but also can conveniently wait the branch circular arc, as China Patent No. is Z199258020.X " conic section divider calipers automatically ", it comprises support, micromachine, penholder, locating rack etc., it has mainly solved divider calipers and has drawn the different shape circle, oval, problems such as curve, can not effectively solve can accurately draw to justify to wait the problem of branch circular arc as 7 five equilibriums again, 9 Equal round camber lines etc., its structure are also complicated, the production cost height.

The utility model content: the utility model will provide a kind of exactly can accurately draw circle, can wait the branch circular arc again, and structure is extremely simple, manufactures conveniently the Dial compasses that cost is low.

The technical solution of the utility model is such: it comprises the picture pin, the divider calipers pin, the divider calipers footmuff, lock-screw, connect silk braid, the screw mandrel support, cutting ferrule, screw mandrel, adjusting nut etc., the divider calipers footmuff is in the divider calipers footmuff, and fix by lock-screw, connecting silk braid is connected the divider calipers footmuff with cutting ferrule, screw mandrel props up and is erected on the cutting ferrule, adjusting nut is sleeved on the screw mandrel, screw mandrel then is contained on the two screw mandrel supports, on a cutting ferrule of Dial compasses, the top of phase transverse direction screw mandrel support is provided with scale, then fixedly be located on another cutting ferrule with the matching used vernier of scale, but on two divider calipers pin, be respectively equipped with the circular arc bisector of five equilibrium circular arc.

On scale, adjusting nut, be respectively equipped with scale line, scale is designed to circular arc.

But on the divider calipers pin, be provided with the Equal round camber line of 3～12 five equilibrium circular arcs.

Between picture pin and divider calipers pin, be provided with the adjustment pad.

The utility model is owing to adopt technique scheme, it is had quick and precisely adjust picture radius of circle and five equilibrium circular arc, simple to operate, easy to use, during especially for on-the-spot picture circle in kind of pincers worker and five equilibrium circular arc, need only on Dial compasses, do suitably to adjust, do not need with chi or other aid, both can draw circle and five equilibrium circular arc, again easily and fast, accurately, its structure is extremely simple, reequips on existing compasses and can use.

Description of drawings: Fig. 1 is the utility model structural representation.

Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.

Among the figure: 1, draw pin, 2, adjust pad, 3, divider calipers pin, 4, divider calipers footmuff, 5, lock-screw, 6 connects silk braid, 7, screw mandrel support, 8, scale, 9, screw, 10, cutting ferrule, 11, turn, 12, handle, 13, locator card, 14, vernier, 15, adjusting nut, 16, screw mandrel, 17, scale line, 18, circular arc bisector.

The specific embodiment: as Fig. 1, shown in 2, the utility model can be divided into radius adjustment member and five equilibrium circular arc portion by function, the radius adjustment member is mainly by scale 8, vernier 14, adjusting nut 15, compositions such as screw mandrel 16 and screw mandrel support 7, on scale and adjusting nut 15, be carved with scale line 17 respectively, at vernier 14 with by the corresponding datum line that all is carved with on the screw mandrel support 7 of adjusting nut 15, it is 10 millimeters that scale line 17 on the scale 8 is designed to every lattice equivalent circle diameter, adjust scale line 17 every lattice 1 millimeter of the equivalent circle diameter then on the nut 15, also can be designed as random length, that is the adjusting range of adjusting nut 15 is 1～9 millimeter, the moving circle of adjusting nut 15 revolutions, the scale line 17 of scale 8 just moves lattice, draw bowlder, rotation adjusting nut 15 makes the scale line 17 on the datum line alignment scale 8 of vernier 14 and equals to draw the integer of circular diameter more than 10 millimeters, and then adjustment adjusting nut 15, make by the scale line 17 on the aligning of the datum line on its screw mandrel support 7 adjusting nut 15, and equal to draw the integer of circular diameter below 10 millimeters, can draw circle by desired size.

And the five equilibrium circular arc portion is mainly by divider calipers footmuff 4, divider calipers pin 3 is drawn pin 1, adjust compositions such as pad 2 and lock-screw 5, divider calipers pin 3 is enclosed within the divider calipers footmuff 4, and be connected silk braid 6 and connect, fixing by lock-screw 5, unclamp lock-screw 5, rotation divider calipers pin 3, it is retractable just, is carved with 3～12 circular arc bisectors 18 on two divider calipers pin 3 respectively, article one, circular arc bisector 18 is represented a kind of five equilibrium circular arc, as design liaison 3 five equilibriums, 5 five equilibriums, 7 five equilibriums, 9 Equal round camber lines etc. generally are designed to 3～12 five equilibriums, during the five equilibrium circular arc, aperture with two divider calipers pin 3 is adjusted to the five equilibrium diameter of a circle of wanting earlier, unscrew lock-screw 5 then, rotate the bisector that divider calipers pin 3 makes the datum line aligning five equilibrium of wanting of divider calipers footmuff 4 again, tighten lock-screw 5 at last, after two divider calipers pin 3 are done same the adjustment, just can be on circular arc the Equal round arc, keeping can being divided into required five equilibrium to circular arc under the constant situation of compasses bipod angle by the length of adjusting the compasses bipod like this; Be provided with between picture pin 1 and divider calipers pin 3 and adjust pad 2, to adjust the length between divider calipers pin 3 bipods, make divider calipers have higher precision, it is simple in structure, and is easy for operation, is specially adapted to factory's pincers worker and produces use.

Claims

1, a kind of Dial compasses, comprise picture pin (1), divider calipers pin (3), divider calipers footmuff (4), lock-screw (5), connect silk braid (6), screw mandrel support (7), cutting ferrule (10), screw mandrel (16), adjusting nut (15) etc., divider calipers pin (3) is enclosed within the divider calipers footmuff (4), and it is fixing by lock-screw (5), connecting silk braid (6) is connected divider calipers footmuff (4) with cutting ferrule (10), screw mandrel support (7) is located on the cutting ferrule (10), adjusting nut (15) is enclosed within on the screw mandrel (10), screw mandrel (10) then is contained on the two screw mandrel supports (7), it is characterized in that: on a cutting ferrule (10) of Dial compasses, the top of phase transverse direction screw mandrel support (7) is provided with scale (8), with the matching used vernier of scale (8) (14), then fixedly be located on another cutting ferrule (10), at two divider calipers pin (3) but on be respectively equipped with the circular arc bisector (18) of five equilibrium circular arc.

2, a kind of Dial compasses according to claim 1 is characterized in that: be respectively equipped with scale line (17) on scale (8), adjusting nut (15), scale (8) is designed to circular arc.

3, a kind of Dial compasses according to claim 1 is characterized in that: at divider calipers pin (3) but on be provided with the Equal round camber line (18) of 3～12 five equilibrium circular arcs.

4, Dial compasses according to claim 1 is characterized in that: be provided with between picture pin (1) and divider calipers pin (3) and adjust pad (2).