Milling Machine Parts

Parts of Milling Machine:

There are mostly two sorts of miller utilized in mechanical industries. First one is horizontal miller and other one is vertical miller. The basic parts of these machines described as follow.

 Base:

It is the inspiration a part of a miller. All other parts are jointed on it. It carries the whole load so it should have high compressive strength so it's made by forged iron. It also works as reservoir of cutting fluid.

     Column:

Column is another foundation part of milling machine. It is mountain vertically on the base. It supports the knee, table etc. Work as housing for the all the opposite driving member. It is a hollow member which contains driving gears and sometimes motor for spindle and therefore the table.

           Knee:

Knee is that the first moving a part of miller. If is mounted on the column and moves along the slideways situated over the column. It is made by forged iron and moves vertically on slideways. It moves up and down on sideways which change the space between tool and workpiece it's driven by mechanically or hydraulically.

       Saddle:

It is placed between table and therefore the knee and work as intermediate part between them. It can moves transversally to the column face. It slides over the guide ways provided situated on the knee which is perpendicular to the column face. The main function of it's to supply motion in horizontal direction to figure piece. It is also made by cast iron.

      Indexing Head:

Indexing head is the most important part of the milling machine. It helps to cutting gear, Square, helical and many other things. It is the most important part to do the indexing. It contains many other things like;

•   Worm shaft
•   Worm gear
•   Sector arm
•    Index Plate
•    Crank Pin

       Table:

Table is situated over the knee. It is the a part of machine which holds the work piece while machining. It is made by forged iron and has T-slot cut over it. The work piece clamp over it by using clamping bolts. The one end of clamping bolt fix into this slot and other is fix to figure piece which hold the work piece. It can provide three degree of freedom to figure piece. It provides vertical motion by moving the knee up and down. It provides horizontal motion by the feed screw and it also provides horizontal (transverse) motion by moving the saddle.

       Over arm:

It is situated over the column on horizontal miller. It is overhang over the column surface and other end supports the arbor. It is made by cast iron.

       Spindle:

Spindle is that the main a part of the machine which hold tool at right place in vertical miller and hold arbor in horizontal miller. It is a moving part which is in rotation. It is motor driven and drives the tool. It has a slot on the front end of it. The cutting tool fix in that slot.

        Arbor:

It is a mechanical part on which is employed as extension a part of the spindle in horizontal miller. It is fitted on the spindle whenever required. It holds the tool and moves it in correct direction.

        Arbor Supports:

This are used to support arbor at right place. One end of this support is jointed at the overhanging arm and another is jointed with arbor.

       Milling head:

It is upper section of vertical milling machine. It consist spindle, driving motor and other controlling mechanism.

        Ram:

Ram is figure as overhanging arm in vertical miller. One end of the arm is attached to the column and other end to the milling head.