Mumbai University > Mechanical Engineering > Sem 4 > Production Process II

Marks: 10M

Year: May 2014

Machining Centre:

A machining centre can be defined as a sophisticated CNC machine tool controlled by a computer sunning programs driven by numerical data, which can perform multiple machining operations like milling, drilling, tapping and boring operations at the same location controlled by making use of several axes and a variety of tools with Automatic tool changer unit.

The CNC machining centres can be broadly classified in two various varieties:

1) Vertical Machining Centre

2) Horizontal Machining Centre

Vertical Machining Centre:

They are mainly used for flat type of work such as plates where the majority of machining is done on only one face of the part in a single set-up. Most of these VMC’s come with three axes. However there are some versions of vertical CNC machining centre with an optional fourth axis, usually a rotary head mounted on the main table. The rotary head can be mounted either vertically or horizontally, depending on the desired results and the model type. This fourth axis can be used either for indexing or a full rotary motion. In the combination with a tailstock, the fourth axis in the vertical configuration can be used for machining long parts that need support at both ends.

Typical Specifications: