milling machine
TRANSCRIPT
MILLING MACHINES
Metal cutting operation in which the operating tool is a slow revolving cutter having teeth formed on its periphery
Multipoint cutting tool
Work piece mounted on the movable work table – fed against rotating cutter
MILLING
PRINCIPLE OF MILLING
CONVENTIONAL OR UP MILLING
Workpiece is fed in the opposite direction to the cutter
Chip that removed gets progressively thicker
When making deep cuts, the cutter tend to pull the workpiece out of the vice since the cutting force is directed upward at an angle
PRINCIPLE OF MILLING
CLIMB OR DOWN MILLING
Workpiece is fed in the same direction as that of the cutter
Chip that removed gets progressively thinner
More metal can be removed for each cut than the conventional milling
PRINCIPLE OF MILLING
1.Plain/ Horizontal Milling machines
2.Vertical
3.Universal
4.Planer type
5.Profile cutting
CLASSIFICATION OF MILLING MACHINES
1. COLUMN & BASE
2. OVERARM, ARBOR, SPINDLE & MILLING CUTTER
3. KNEE & ELEVATING MECHANISMS
4. SADDLE
5. TABLE, VICE & WORKPIECE
MAJOR PARTS OF HORIZONTAL MILLING MACHINE
1. COLUMN & BASE
2. SPINDLE HEAD, SPINDLE MOTOR, MILLING CUTTER
3. KNEE & ELEVATING MECHANISMS- OPTIONAL AS THE SADDLE & TABLE ASSEMBLY CAN BE DIRECTLY MOUNTED ON THE BASE ITSELF.
4. SADDLE
5. TABLE, VICE & WORKPIECE
MAJOR PARTS OF VERTICAL MILLING MACHINE
1.PLAIN OR SLAB MILLING
2.END MILLING
3.SLOT MILLING
4.ANGULAR MILLING
5.FORM MILLING
6.STRADDLE MILLING
7.GANG MILLING
8.SLOT MILLING
9.FACE MILLING
MILLING PROCESSES/OPERATIONS
PLAIN OR SLAB MILLING
END MILLING
SLOT MILLING
FORM MILLING
STRADDLE MILLING
FACE MILLING
FACE MILLING
GANG MILLING