1. 1
Prepared by,
Mr. S. B. Kamble
Department of Mechanical Engineering
Sharad Institute of Technology, College of Engineering, Yadrav
Autocollimator
Subject – Metrology and Quality Control
6. Equipments used in Autocollimator
Lamp
Diffuser
Crossline Graticule
Beam Splitter
Eyepiece
View
Point
Objective
Reflector
Focal
Plane
Collimating lens
7. Working Process of Autocollimator
Lamp
Diffuser
Crossline Graticule
Beam Splitter
Eyepiece
View
Point
Objective
Reflector
Focal
Plane
Collimating lens
Reflector is perpendicular to ray of light
8. Working Process of Autocollimator
Lamp
Diffuser
Crossline Graticule
Beam Splitter
Eyepiece
View
Point
Objective
Reflector
Focal
Plane
Collimating lens
Reflector is tilted at some angle
Ɵ
2Ɵ
9. Checking small linear displacements.
Applications of Autocollimator
Checking straightness of machine tool slideways.
Measuring very small angles.
Checking parallelism.
Checking squareness of column to base.
Checking flatness of bed plates and surface tables.
Measuring very small displacements.
10. Wide range of accessories and levels available.
Merits of Autocollimator
It has very high accuracy.
It can measure wide range angle.
It is very easy to set up and operate.
Calibration traceable to international standards.
It Can be used to see the result visually or electronically i.e in a computer screen.
11. It requires sample cutting and processing for tracing by the detector.
Demerits of Autocollimator
Maintenance is required regularly.
It is time consuming.