Parts used in Milling Machines
The different parts of the milling machine are:
Column and base – The column and base of a milling machine support the other components.
Knee – A vertical positioning screw, often known as an elevating screw, supports and adjusts the knee.
Saddle and Swivel Table – The saddle is on the knee and supports the table, while the Swivel table is attached to the saddle, which swivels (revolves) horizontally in both directions.
Power Feed Mechanism – The power feed mechanism is located in the knee. The longitudinal (left and right), transverse (in and out), and vertical (up and down) feeds are all controlled by it.
Table – On the top of the saddle, there is a rectangular casting called a table.
Spindle – The spindle of a milling machine is the shaft that holds and drives the cutting tools.
Over Arm / Overhanging Arm – This is a horizontal beam that runs the column’s top face length. It could be a single casting that slides along the dovetail channels on the column’s top face.
Arbor Support – An arbor support is a casting with a bearing that supports the arbor’s outer edge. It also aids in aligning the arbor’s outer end with the spindle.
RAM – The vertical machine’s overhanging arm is known as the ram.
Different types of milling machine
● Vertical Milling Machines
The vertical mill rotates by staying on the same axis and features a vertically positioned spindle axis. The spindle can also be extended to accomplish drilling and cutting operations. There are two types of vertical mills: turret mill and bed mill.
The turret mill uses a table that moves perpendicularly and parallel to the spindle axis to cut the material. The spindle, on the other hand, remains immobile. Two cutting methods are possible by shifting the knee and lowering or lifting the quill.
On the other hand, the bed mill has a table that travels perpendicular to the spindle’s axis and a spindle that moves parallel to its axis.
● Horizontal Milling Machines
The horizontal mill is a cutter that is identical to the vertical mill, except it is mounted on a horizontal arbor. Many horizontal mills use rotary tables for milling at different angles. These are referred to as universal tables. Aside from that, all of the tools used in a vertical mill can be utilized in a horizontal mill as well.