CN2046618U - Multi-purpose self-centering graduator - Google Patents

Abstract

The utility model belongs to a centering graduation instrument, in particular to a multi-purpose self-centering graduator of mechanical process, comprising a main scale and auxiliary scales. The utility model adopts the redesigned structure which is provided with the main scale and two auxiliary scales; at the same time, a centering graduation groove scale whose both ends are provided with a chute is arranged on the main scale, and a cylindrical positioning slide block is arranged on the auxiliary scale. Consequently, the multi-purpose self-centering graduator is capable of replacing various measuring tools, such as a caliper, a depth gauge, an angle measuring scale, a radian scale, etc. The utility model has the advantages of simple structure, convenient operation, little error, and wide purpose.

Description

Multi-purpose self-centering graduator

The utility model belongs to the self-centering calibration instrument of using in centering calibration quasi-instrument, the especially machining more.

As everyone knows, industry all departments usually run into the center of circle and the situations such as diameter and calibration that need to measure round piece, as measuring the center of circle of hollow closed circle workpiece in the machining, six equidistant holes on path length and the annular section, present measuring method is: at first will place compaction material in the open circles of this hollow round piece, make it suitable with home position, place on the platform then and be close to square chest, make it vertical with platform, after measuring diameter with height gauge, reserve radius again, mobile height gauge is rule on workpiece (being the compaction material place), rules once more behind the turning of work piece to locate to stamp towards point at the intersection point (being the center of circle) of two lines and obtains the center of circle.At this moment can serve as that axle is drawn circle with planing with this center of circle by required size, again with calibration pincers (or other instrument) calibration on this circle, the intersection point of its radiant rays and circular arc line be exactly required boring point at last.Chinese patent CN87206374 number a kind of heart caliper of asking is disclosed in the recent period.This instrument outward appearance is the T font, left-right symmetric, the back side that is characterized in horizontal seat has the cylindrical little recessed number of symmetry to keep off, can insert the cylinder pin of different-diameter, the cylinder pin protrudes horizontal seat tool back plane, forms multiple span, under survey central authorities slot arranged, and have the screw mandrel of adjusting to drive slide calliper rule, and the middle apex of the heart is arranged on its transverse arm, scale is arranged on the blade; The vertical ditch seam of having taken, there is the groove that moves for the slide calliper rule blade on its right side, and its left side has the screw mandrel of adjusting to drive the pectination card, and each measurement face that blocks arm crosses ditch seam and slide calliper rule blade and vertical with them.This instrument is compared with preceding method and is improved to some extent, but still need compaction material in the open circles of hollow round piece, select the little recessed retaining distance in the horizontal seat back side then, insert the cylinder pin, the arc wall will be leaned in the two cylinder pin, at this moment rule on compaction material with scriber, move this instrument and use with the standardized again line of quadrat method, the intersection point of two lines is the center of circle.The middle apex of the heart of observing transverse arm by the oblong aperture arc wall that reclines, rotate and regulate screw mandrel drive pectination card, make the measurement face of its a certain card arm just pass through the above-mentioned center of circle, the scale of this Ka Bi this moment on the slide calliper rule blade has two numeral left sides long for the radius of workpiece, and the right side is that the diameter of workpiece is long.Thereafter the process in six holes on the measure annular section is still identical with first kind of classic method.Therefore the measurement of this instrument still needs to be provided with compaction material and just can measure the center of circle and diameter, and six holes on the annular section still need adopt traditional old way to carry out, and process is loaded down with trivial details like this, and error is big.

The utility model improves at problems of the prior art, provide a kind of without platform, square chest, height gauge, slide calliper rule and plan and measurement many that compaction material can be realized hollow round piece with self-centering calibration instrument, its have simple in structure, error is little, characteristics such as easy to use.

The utility model is achieved by following manner: a kind of many with self-centering calibration instrument, comprise main scale, secondary chi, one end of the utility model main scale is made sphenocephaly, its center is provided with semicircle bevel protractor, also can adopt circular bevel protractor (0～360 °), main scale is marked with scale in addition, secondary chi adopts two two ends of making the T font and being installed in main scale by groove respectively, it can reciprocatingly slide and tighten up by screw along main scale, its horizontal edge and longitudinal edge are marked with scale, simultaneously, the centering indexing trough chi that two ends have chute is set on main scale, can be one, can be two also, and it is marked with scale, two symmetrical cylindrical positioning sliding blocks are set respectively on two secondary chis, come to four, constitute four summits of square or rectangle, be arranged in the chute that cylindrical positioning sliding block on cornerwise two summits places centering indexing trough chi respectively.If adopt a centering indexing trough chi, cylindrical positioning sliding block on optional one of them cornerwise two summit places the chute of centering indexing trough chi respectively, if adopt two centering indexing trough chis, cylindrical positioning sliding block on two cornerwise four summits can be placed the chute of two centering indexing trough chis respectively, wherein the latter's measuring accuracy doubles than the former.

Said centering indexing trough chi, the center is provided with circular bevel protractor, it is marked with 0～360 ° scale, be provided with scriber in its chute, the center of circle semicircle or circular bevel protractor in the center of circle of this circle bevel protractor and the main scale overlaps and is connected by pad and central shaft, and scriber is installed in the chute by movable slider.

The a certain end of said two secondary chis is made the rhombus section, is convenient to accurately measure various sizes.

The utility model is according to general geometrical principle design, when it uses, as the center of circle of still measuring aforesaid hollow closed circle workpiece, path length, and annular section on six equidistant holes, as long as reserving scriber by needed radius is close to reference field (cylindrical or interior circle) at workpiece with four cylindrical positioning sliding blocks and can determines that the center of circle draws circle (promptly feel relieved and draw to justify and once finish), rotate centering indexing trough chi then, can determine the boring point of six equidistant holes by slide the respectively scriber on the movable slider in the chute of required angle.

The utility model is compared with prior art, has characteristics such as simple in structure, easy to use, that error is little.

Fig. 1 is a front view of the present utility model;

Fig. 2 is a right view of the present utility model.

Among the figure: 1 main scale, 2 secondary chis, 3 rhombus sections, 4 cylindrical positioning sliding blocks, 5 screws, 6 centering indexing trough chis, 7 movable sliders, 8 scribers, 9 chutes, 10 sphenocephalies, 11 central shafts, 12 circular bevel protractors, 13 semicircles or circular bevel protractor (dotted portion is circular among Fig. 1), 14 pads.

Most preferred embodiment of the present utility model, as shown in Figure 1 and Figure 2.A kind of many with self-centering calibration instrument, an end that comprises main scale 1, secondary chi 2, the utility model main scale 1 is made sphenocephaly 10, its center is provided with semicircle or circular bevel protractor 13, as dotted portion among Fig. 1 is circular bevel protractor, solid line partly is semicircle bevel protractor, here can adopt semicircle bevel protractor, also can adopt circular bevel protractor, corresponding angular range is 0～180 ° or 0～360 °, and main scale 1 is marked with scale in addition; Secondary chi 2 adopts two two ends of making the T font and being installed in main scale 1 by groove respectively, it can reciprocatingly slide along main scale 1 and also can tighten up by screw 5, its horizontal edge and longitudinal edge are marked with scale, simultaneously, the centering indexing trough chi 6 that two ends have chute 9 is set on main scale 1, it can be one, also can be two, it is marked with scale, two symmetrical cylindrical positioning sliding blocks 4 are set respectively on two secondary chis 2, come to four, just constitute four summits of square or rectangle in the design according to geometrical principle, and the centering indexing trough is the diagonal line of above-mentioned square or rectangle, be arranged in the chute 9 that cylindrical positioning sliding block 4 on cornerwise two summits places centering indexing trough chi 6 respectively, if adopt a centering indexing trough chi 6, cylindrical positioning sliding block 4 on optional one of them cornerwise two summit places the chute 9 of centering indexing trough chi 6 respectively, if adopt two centering indexing trough chis 6, cylindrical positioning sliding block 4 on two cornerwise four summits can be placed the chute 9 of two centering indexing trough chis 6 respectively, wherein the latter's measuring accuracy doubles than the former.

Said centering indexing trough chi 6, the center is provided with circular bevel protractor 12, it is marked with 0～360 ° scale, be provided with scriber 8 in its chute 9, the center of circle semicircle or circular bevel protractor 13 in the center of circle of this circle bevel protractor 12 and the main scale 1 overlaps and is connected by pad 14 and central shaft 11, and scriber 8 is installed in the chute 9 by movable slider 7.

The a certain end face of said two secondary chis 2 is made rhombus section 3, is convenient to accurately measure various sizes.

It is very easy when it uses, as measure hollow closed circle workpiece the center of circle, path length, and annular section on six equidistant holes, as long as reserving scriber 8 by needed radius is close to reference field (as excircle of workpiece or interior circle) at workpiece with four cylindrical positioning sliding blocks 4 and can determines that the center of circle draws circle (promptly feel relieved and draw to justify and once finish), rotate centering indexing trough chi 6 then, can determine the boring point of six equidistant holes by slide the respectively scriber 8 on the movable sliders 7 in the chute 9 of required angle.

In addition, the utility model also can be measured the size that other needs specific purpose tool to measure, and as measuring the length and width equidimension, the blade of the rhombus section 3 of available two secondary chis 2 is measured, and is equivalent to the measurement of slide calliper rule this moment; Such as the need size that fathoms, the sphenocephaly 10 of main scale 1 can be inserted in the hole of workpiece, be close to the secondary chi 2 of this end and can read depth dimensions, be equivalent to depth gauge rule this moment; Measure radian such as need and can prop up dome with the sphenocephaly 10 of main scale 1, and should hold secondary chi 2 to lean against on the camber line, can read chord length and action, thereby calculate radian; Use separately main scale 1 and one of them secondary chi 2 can replace square; Use separately main scale 1 and centering indexing trough chi can replace bevel protractor. Therefore, the utlity model has the characteristics such as function is many, simple in structure, easy to use.

The utility model can be made large, medium and small various sizes according to actual needs, to adapt to different needs, satisfies the instructions for use of all trades and professions.

Claims (3)

1, a kind of many with self-centering calibration instrument, comprise main scale, secondary chi, feature of the present utility model is that an end of main scale is made sphenocephaly, wherein scheming has semicircle or circular bevel protractor, secondary chi adopts two two ends of making the T font and being installed in main scale by groove respectively, it can reciprocatingly slide and tighten up by screw along main scale, simultaneously, the centering indexing trough chi that two ends have chute is set on main scale, two symmetrical cylindrical positioning sliding blocks are set respectively on two secondary chis, come to 4, constitute four summits of square or rectangle, be arranged in the chute that cylindrical fixedly slide block on cornerwise two summits places centering indexing trough chi respectively.

2, as claimed in claim 1 many with self-centering calibration instrument, it is characterized in that said centering indexing trough chi, the center is provided with circular bevel protractor, be provided with scriber in its chute, the center of circle of the semicircle bevel protractor in the center of circle of this circle bevel protractor and the main scale overlaps and is connected by pad and central shaft, and scriber is installed in the chute by movable slider.

3, as claimed in claim 1 or 2 many with self-centering calibration instrument, it is characterized in that a certain end of said secondary chi is made the rhombus section.