K1203784
Metrology Report
Engineering Applications EG1089
Contents:
Aim: To become familiar with various measuring equipment and accessories and how they are applied in production/manufacturing industry.
Objective: Use various measuring instruments to measure engineering components with respect to engineering drawings. Understand the safety rules in the lab. Identify the accuracy of measuring tools and the importance of metrology in industry and manufacturing as well as preparing inspection planning sheets for quality control.
Apparatus: Vernier Caliper (Digital/Manual):
This device is used to measure lengths and the diameter of a component, giving precise readings. It has a pair of external and internal jaws that are used to measure the dimensions of an object; this is done by having one movable jaw and one fixed. Measurements are read from a graduated bar. [3] Accuracy: + 0.02mm
Slip gauges:
Slip gauges are metallic or ceramic blocks with two opposing faces that are ground precisely flat and parallel, at a precise distance apart. Accuracy of the slip gauges depends on the various grades, with higher grades being of higher accuracy and precision. [1]
Angle Dekkor:
This measuring tool uses the principle of auto collimation to measure small angles of components. It can also be used as a measure of perpendicularity (squareness). [2]
Optical flat testing machine:
This device is used as a reference to compare the flatness of an object with the use of optical flats, which are precisely polished flat surfaces. When placed on the surface of a component, dark and light bands will form under monochromatic light. The shape of these bands gives a visual representation of the flatness of the object being tested.
Dial test indicator (DTI):
Taper Measuring Machine:
Shadow Graph:
OMT Roundness testing machine:
Mechanical comparator:
This is a gauging