To perform the plain milling in a horizontal milling Machine

Aim

To perform the plain milling in a horizontal milling Machine on the given work piece for the given dimensions.

Material RequiredMild steel Plate of Length 50x50 mm

Tools Requiremed

1. Steel rule,
2. Flat file (rough and smooth),
3. Try square

Procedure

1. The work piece was fitted in the vice and filed to the required dimensions.
2. The squareness of the work piece was checked.
3. Drawing punches were made for milling operations.
4. The job was fitted on the radial drilling machine.
5. Milling operation is made for entire work piece to attain required dimensions.

All dimensions are in mm

Materials Supplied: Mild steel:

Tool Material: High Speed Steel (H.S.S)

Viva Questions

How do you classify milling cutters?

They are classified based on following factors (i) According to the shape of the teeth. (ii) According to the type of operation (iii) According to the way of mounting on the machine.

What is cam milling?

Cam milling is operation of producing cams in the milling machine by the use universal dividing head &a vertical milling attachment.

What is meant by up milling and down milling?

In up milling, cutter rotates opposite to the direction of feed of the work piece whereas in down milling, the cutter rotates in the same direction of travel of the work piece.

What is a shell mill?

A shell mill is a large type of face or end mill, rather than having an integral shank. Typically there is a hollow or recess in the centre of the shell mill for mounting hardware on to a separate arbor.

What is meant by up-milling and down milling?

In up milling, cutters rotates opposites to the direction of a feed of the work piece whereas in down milling, the cutter rotates in the same direction of travel of the workpiece.

What is thread milling?

A thread milling has no chamfer. The mill is inserted into the hole along the axis of the spindle, deep enough to produce full thread depth required.