CN2319780Y

CN2319780Y - Spherical combined checking ware

Info

Publication number: CN2319780Y
Application number: CN 97250333
Authority: CN
Inventors: 殷亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-01
Filing date: 1997-12-01
Publication date: 1999-05-19
Anticipated expiration: 2007-12-01

Abstract

The utility model relates to a spherical combined checking device for evaluating a three-coordinate measuring machine. The utility model is characterized in that in at least four spheres, two connecting lines of the centers of spheres form a crossing shape at a space or in the same plane, and lie in horizontal positions; in addition, the connecting lines of the centers of at least three spheres form an isosceles right triangle shape. The utility model has the advantages of novel structure and simple and portable performance, and various combinations can be formed. When the utility model is used, an evaluating method of the three-coordinate measuring machine is simplified, therefore the utility model is especially convenient for the self checking of units. The utility model has the advantages of complete functions, convenient use and reliable evaluating performance, and has wide application prospect when the utility model is matched with the three-coordinate measuring machine.

Description

Spherical combined detection tool

The utility model relates to the Measuring and testing utensil that is used to evaluate three-coordinate measuring machine.

As everyone knows, along with manufacturing development, the application of three-coordinate measuring machine, more and more general in China.The thing followed has also just been put on agenda to the evaluation of three-coordinate measuring machine precision.To this, each state has all worked out corresponding regulation, such as the method that U.S. ASMEB891.12M--1990 has stipulated repeatability, linear precision and the spatial accuracy of calibrating three-coordinate measuring machine, promptly examines and determine spatial accuracy with club, examine and determine linear precision with laser, with standard ball calibrating repeatability.Evaluate linear precision and spatial accuracy and repeatability such as the VDI/VDE2617 standard code of Germany with gauge block again, regulation laser interferometer measurement linear precision.China is the performance of evaluation such as specified volume piece and laser interferometer three-coordinate measuring machine also.But all these needs expensive specialized equipment, as laser interference only, inductance amesdial, third-class gauge block or the like.And use the needed environmental baseline of these instruments, technical conditions to require all very high.This has all influenced verifies and calibrating the precision of three-coordinate measuring machine, let alone makes the operator can judge voluntarily, in time whether measuring machine is in qualified duty.For this reason, various simple spherical cubings are arisen at the historic moment, such as the club cubing of two balls of the U.S., such as the ball plate cubing of 25 balls of Germany.But the former price is high and can only check the individual event performance, though the latter covers point greatly, clamping inconvenience needs upset to use, and import price is very expensive.

The novel purpose of this use is to provide a kind of simple, light combined spherical cubing, use the people of three-coordinate measuring machine, as measuring workpieces it is measured one by one, see by data preparation whether it falls into the error amount of permission, thereby whether evaluate this three-coordinate measuring machine performance qualified.Both simplified the assessment method of three-coordinate measuring machine, and realized the on-the-spot self check of measuring machine, the performance of being convenient to different model, different country origin three-coordinate measuring machines again compares.

The purpose of this utility model reaches like this, promptly comprising that at least 5 are arranged in the have certain requirements a kind of spherical combined detection tool of spheroid and column and underframe of its circularity of space, make symmetrically arranged two ball centre of sphere lines and symmetrically arranged other two ball centre of sphere lines form right-angled intersection in the space or in same plane at least in 4 balls; Each bar centre of sphere line of above-mentioned right-angled intersection all is horizontal; This cubing has at least the centre of sphere line of 3 balls to constitute isosceles right triangle in addition.Be to guarantee above-mentioned space requirement, the simplified structure of spheroid, underframe can design and be cross-shaped and have some symmetrically arranged mounting holes on it.

Advantage of the present utility model is: select different columns, ball and underframe for use, can form many balls cubing in difformity, not isostructure space, be applicable to all kinds of height of different model, different size, the calibrating of middle precision three-coordinate measuring machine.The cubing physical dimension can supportingly be manufactured, and chooses the different size combination according to the measurement range of tested measuring machine during use.Compare with known club, ball plate cubing, the utility model is simple and light, multiple functional, easy to use, the evaluation dependable performance.Compare with the calibrating of employing specialized equipment, simplified the assessment method of performance especially, approximately can save the calibrating time of 1/3-2/3, improved calibrating efficient, the utility model is combined by spheroid, column, underframe, when forming five ball cubings, can evaluate the consistance or the like of linear precision, spatial accuracy, the repeatability of three-coordinate measuring machine, three mutual perpendicularity and three linear scale scale-up factor.When forming six balls, seven balls, eight balls, nine balls, can evaluate the performance of measuring machine more convenient, more efficiently and, for example analyze beat degree, outer corner difference or inclination of an axle or the like in order to the reason of analyzing influence measuring machine precision.When the position, center is provided with spheroid and make the three ball centre ofs sphere constitute isosceles right triangle, then more help to calculate evaluation with performance.The utility model is especially suitable to middle verification cubing, uses the reviewer of three coordinates can carry out irregularly verification of scene at any time.In a word, the utility model structure is new, cost is low, low price, can form multiple combination, and is supporting with three-coordinate measuring machine, and purposes is very considerable.

See embodiment below in conjunction with accompanying drawing.

Fig. 1 is 5 ball combined detection tool structural representations.

Fig. 2 is 6 ball combined detection tool structural representations.

Fig. 3 is 7 ball combined detection tool structural representations.

Fig. 4 is 8 ball combined detection tool structural representations.

In Fig. 1,1 is the cruciform underframe, and there are some symmetrically arranged mounting holes at its center and two ends.2 is column, can be made into several specifications by length.3 is that the dependence screw thread is screwed in the steel ball on the column, gets 23 millimeters of steel bulb diameters, circularity here less than 3/10000ths.α, β angle are all got 45 ° by shown in Figure 1 among the figure, and two high-order Places of astrosphere and both sides are in same horizontal line, and around 4 of astrosphere its, its centre of sphere line forms the right-angled intersection in space and all is horizontal.Certainly, if astrosphere is higher than this two high-order Places, then can constitute 5 ball cubings of another kind of form again.In Fig. 2, Fig. 3, Fig. 4,4 is clip, and 5 for being equipped with the club of spheroid in two.In like manner, the astrosphere position in Fig. 2, Fig. 3 and Fig. 2, Fig. 3, shown in not simultaneously, can form 6 balls, the 7 ball bolt tools of other form again.8 ball cubings among Fig. 4 if as 5 ball cubings, at the underframe center one column and spheroid are set again, just constitute 9 ball cubings.Certainly, can also form more scheme, form more characteristic point, increase evaluation and count.When only using club and two balls, can form the spatial accuracy of the club cubing of Len req again in order to the evaluation three-coordinate measuring machine, can be by the operating accuracy of German VDI/VDE--2617 useful test index plate and commentaries on classics tool.In a word, the Position Design of ball should consider correctly to reflect the duty of tested measuring machine, and promptly the realistic accuracy situation during operate as normal also will be considered rational usable range.

Claims

1, a kind of spherical combined detection tool comprises at least 5 spheroid and column and underframe that are positioned at the space, it is characterized in that:

A, at least in 4 balls symmetrically arranged two ball centre of sphere lines and symmetrically arranged other two ball centre of sphere lines in the space or right-angled intersection in same plane;

Each bar centre of sphere line of b, above-mentioned right-angled intersection all is horizontal;

The centre of sphere line of c, at least 3 balls of this cubing constitutes isosceles right triangle.

2, according to claim 1 fast spherical combined detection tool, it is characterized in that underframe is cross-shaped and has some symmetrically arranged mounting holes on it.