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Principles of dimensional metrology

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Reference no: EM13864346

Principles of Dimensional Metrology

1. Balls of diameters 25 mm and 20 mm were used to measure a taper ring gage.  The large ball protruded mm above the end face of ring gear while the distance of the end face from the top of the 20 mm diameter ball was 40 mm.

Determine:

A) Angle of taper and the large end diameter.

B) Assuming an error of upto 0.005 mm in measuring the distances and no errors in the ball diameter, determine the possible error in angle?

137_Principles of Dimensional Metrology.jpg

Figure above shows a method to measure taper of a cone with a 10 in sine bar as shown. If the height h of the slip blocks assembly is 2. 5321 in, determine the taper of the cone.  A ½ in ball with a slip gage stack of s = 0.1203 in is assembled as shown such that the dial gage reading over the taper and the block are identical.

Calculate the diameter of the smaller end of the cone.

3.Given the following gages and their classify then in one of the eleven categories and justify your selection

Gage Description

Application

Classification

Mahr/Federal XLI-22P=20 Portable Thickness Gage

Verify Flange thickness by an operator on assembly floor

 

Mahr Form MMQ 400-2

Small lot of engine shafts to be measured for First Article

 

Nikon XC65d(-LS) Cross Scanner on a LK V 21.12.10

Measure Sheet metal profile in stamping inspection cell

 

Renishaw Equator

Introducing gage to replace multiple hand inspections for process control

 

Zygo 7300 New View

Parts sent for measurement for a customer return.  Need improved data to complement production inspection from layout

 

Starrett 1-2" Micrometer

Small lot of engine shafts to be measured for First Article

 

Starrett 0-2" Micrometer

Verify Flange thickness by an operator on assembly floor

 

Habco Model AF1000 Digital Airflow Test Stand

Measurement of in-process inspection for part acceptance by lead man

 

MitutoyoSurftest SJ-310

Production method of inspection for shaft surface finish

 

OGP Focus

Profile measurement of ground surface by an operator

 

INTRA Variable Fixture Electronic Gage

Measurement of crankshaft journal runout

 

North Star Imaging CXMM CT System

Measurement of internal hole diameters of nozzle

 

Accent Industrial FPI System

Crack Detection of machined disks

 

GARMicrofinish Surface Comparator

Used at final inspection by operator to verify grind surface

 

Schenk PASIO50

Small Rotor Balancing per ISO specification

 

Reference no: EM13864346

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