My Report (ian Sorry Karun Pako Naka Send).docx

First slide Amplification and magnification of error - As dimension changes become too small for easy measurement, it is necessary to amplify or magnify them prior to measurement. This can be performed mechanically, electronically, pneumatically, or optically using a variety of tools {ikaw lang bahala sa design unxaon nimo pag char2 ana ian} 2nd slide

3rd side DIAL INDICATORS •

The dial indicator is perhaps the most widely used instrument for precise measurement. Basically it consists of a probe, rack, pinion, pointer, dial and case.

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The graduated dial is calibrated for direct reading of variation from the nominal dimension

4th slide or e sumpay ra nimo sa 3rd slide kay kuyog ramn ni ian •

Dial indicators are commercially available from a great number of sources. Standard models offered vary greatly in size, amplification ratio, mounting facilities and precision.

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An indicator gage has one primary advantage over a fixed gage, in that it shows how much a work piece is oversize or undersize.

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Extremely precise dial indicators are part of the standard inspection equipment found in a gage crib, together with surface plates, parallels, V blocks, and vernier height gages

5th slide (kuyog rapud ni sa slide 3 ian) •

In checking squareness or concentricity, the indicator is zeroed with the probe bearing on the workpiece.

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Dial indicators are often used with or as an integral part of commercial available plug and snap gages.

6th slide (kuyog Rpud ni sa 3 ian) •

Indicator type plug gages, together with a gage for measuring large interior diameters.

7th slide •

Typical indicator type snap gage, together with special tooling for the measurement of threads, gears, or splines.

8th slide Pneumatic Amplification Gages

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There are two general types of air gages. 1. actuated by varying air pressure 2. operated by varying air velocity at constant speed

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Compressed air is filtered and reduced to a regulated pressure before it enters the measuring circuit.

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This type of gage can also be used for checking external dimensions by replacing the plug gage with either a ring gage or a probe.

9th slide ELECTRICAL AMPLIFICATION GAGES  - Electronic digital readout tools reduce interpretation errors that may occur when a graduated scale or a dial indicator is read, it provide instantaneous readings; they can be zeroed out at any point; provide out-of-tolerance alerts, and can be used for data collection and analysis for statistical process control (SPC).

Reed-type electrical gage

10TH SLIDE OPTICAL PROJECTION GAGING - Optical projection is a method of measurement and gaging employing a precision instrument known as an optical projector or comparator. Optical gaging is gaging by sight rather than feel or pressure