Precision Measuring Machines- The Underlying Concepts

By Author: Jash precision
Total Articles: 8
Comment this article

World of metrics may seem a physicist world or an engineer’s world. But the amazing part is, if these would have not been there then how you could distinguish between a flat LCD and ordinary TV or say an air bus and an airplane. Size does matter and what matters along with is the shape with which they are identified with.

Metrics come with two most important terms the accuracy and precision. In lay men knowledge this both may seem one and the same but no they are not. If you talk about accuracy of certain experiment you can’t guarantee precision in it and if you say the precision is fine then the thing can’t prove its accuracy. It’s like comparing oranges with apples.

Accuracy is how close the value to the actual value and precision is number of times the experiment shows the same results. If accuracy is marked with degree of closeness in measurements then precision is marked with degree of repeatability and reproducibility that brings the same value. A measurement system is only valid when it is both. A traceable reference standard plays an important part here to achieve both. Therefore there are standard ...
... organizations both national and international for system of units.

In various areas the application of both matters, for example in psychophysics or psychometrics precision is other name of reliability, in logic simulation precision is used and measured with detail.

Well this scientific application could have been very difficult to manufactures of machines and assembling if precision measuring machines would have not been there. These machines, instruments and tools with their application in wide areas have solved the precision issues for manufacturers.

Coordinate measuring machines are the most modern types in the present time. This machine measures the geometrical characteristics of parts in three dimensional spaces. The machine has three parts; the machine body and the probing system. The verities in these machines appear with respect to its body make and type of probing system used.

The body wherein the machine incorporates within three axes is of four arrangements. Each axes is fit with linear measurement transducer. These are:

Cantilever- for small and medium sized machines

Bridge- the most popular type

Column- universal measuring machine rather than CMM

Gantry- for large components

Horizontal-for tramming operations.

Surface plate over which the arrangements move also differs in type and quality and hence affects the measurements so surface plate manufacturers provide a high quality in this.

CMM as a precision measuring machine gives efficient inspection and rapid feedback for any correction to occur before the other part of machine is made.

Jash metrology a pioneer for manufacturing of precision surface equipments and surface plate manufacturers is a reliable and dependable Engineering Group for the World markets. For best quality CMM and precision measuring machines log on to http://www.jashmetrology.com.