ITI Bangla

Vice     A bench vice is made of - cast iron or cast steel and it is used to hold work for filing, sawing, threading   etc.    Parts of a bench vice - Sl. Name of parts Material i Fixed Jaw          Grey cast iron ii Movable jaw Grey cast iron iii Jaw plates Tool steel iv Spindle Mild steel v Handle Mild steel vi Box Nut Phosphorous Bronze   The size of vice indicated by the – width of the jaw. Vice Clamps or soft jaw is made of – Aluminium. The vice clamps are used to – Protect the finish surfaces of the job. A bench vice is fixed at at a height of – Elbow Position . A bench vice is fixed at at a height of – 106 cm . The bench vice is called as Parallel jaw vice because – It’s movable jaw moves parallel to the fixed jaw. Types of vice Quick

According to Shape Files are seven types. Their are –   sl Name sl                Name I Flat File V Square file Ii Hand file Vi Triangular file Iii Half Round file vii Knife edge file iv Round file                                                    Flat file   These files are of rectangular cross section. The edges along the width of these files are parallel up two-thirds of the length, and then they taper towards the point. The faces are double cut and the edges single cut . These files are used for general purposes work .                                       Hand file These files are similar to the flat files in their cross-section. The edges along the width are parallel throughout length . The faces are double cut. One edge is a single cut whereas the other is a safe edge . Because

  FILE   https://youtu.be/9SqKnA4Cqzo     File is used for removing excess material this method is known as filing . Parts of file -             Files are made of – High carbon steel or high grade cast steel. Ø       Files are Specified according to there – Length , grade, cut and shape. Ø      What is the length of a file – The length of a file is the distance from tip to the heel . Ø      What is the grade of a file – The grade of a file is spacing of the teeth.                                      *Files are many types according there Grade, Cut and Shape.   According to Grade -  five types of file    SL.     Name                                      Uses       I.              (i) Rough file Rough file is used for Removing rapidly a larger quantity of metal .    II.              (ii) Bastard file Bastard file is used where heavy reduction of material III.