UNIVERSAL MILLING MACHINE

Universal Milling Machine

Univesal processing machine having a table fitted with all movements and a partitioning head with switch gears so it can play out a processing activity. 

Processing of helical. vertical. level surfaces. grooves. gaps. points activity can be performed utilizing the general processing machine

Working Principle of Milling Machine

Metal removal takes place due to the cutting action of a revolving milling cutter when workpiece is fed on it Cutter is held on a spindle or arbore Operation is performed on milling machine.

Parts of milling machine

Base

Hefty projecting and give at the lower part of the machine . Goes about as a heap taking part for any remaining pieces of the machine and a repository for the coolant.

Column

On the section numerous parts and controls are fitted Vertical equal guide ways are vided on front face of the segment in which knee slides all over

Knee

Knee is an inflexible projecting With the development of the knee the table stature or distance between the shaper and workpiece can be changed By working the screw jack with the assistance of hand wheel or force feed the table tallness can be changed.

Table

Made of CI with its top surface accurately machined To accommodate the la ping bolts for Kthe workpiece the top surface of the table carries longitudinal T - slots.

Saddle

Transitional part between the table and knee which goes about as a help for the table To give cross feed to the table the seat can be changed transversely along the guide ways gave on the highest point of the knee.

Overarm

.Hefty help gave on the highest point of the processing machine To help the projecting arbor it can slide on a level plane forward and in reverse and changed at required position.

Arbor

Utilized for holding the processing cutters during the activities It is a typical technique for mounting the cutters in spite of the fact that they are mounted on the machine axle straightforwardly as well.

The arbors are mainly of two type i.e. standard or stab arbor..  Stndard arbor is provided with set of spacing collar which help in adjusting the cutter position The slot are provided on the flange of the arbor to engage the driving dogs of the spindle Stub arbours are used to hold face and side milling cutters which do not need a large overhang .

Milling Machine Operations.

1. Plain or slab milling 

2. Face milling 

3. Angular milling 

4. Form milling 

5. Straddle milling 

6. Gang milling 

7. End milling 

8. T - slot milling 

9. Dove - tail milling 

10. Saw milling 

11. Involute gear cutting

Universal Milling Machine operations explained 

1) Plain Milling.

It is a Process of processing level surfaces keeping the pivot of the shaper corresponding to the surface being processed. It is likewise called surface processing or chunk processing. A plain processing shaper is utilized for the plain processing.

2) Face Milling.

This activity makes level surfaces at do the essence of work plece . This machining activity is done on the surfaces which are opposite to the hub of the shaper The operation is performed by the face milling cutter mounted on stub arbor of the machine.

3) Angular Milling.

It is a cycle of processing level surfaces which are neither Parallel nor opposite to the pivot of the processing shaper. It is additionally called as point processing. A solitary point processing shaper is utilized to play out this activity.

4) Form Milling.

This willing cycle is utilized for machining those surfaces which are of unpredictable shapes. The structure processing shaper utilized has the state of its slicing teeth adjusting to the profile of the surfaces to be created

5) Straddle Milling.

It is a process in which two side milling cutter are used to machined two opposite sides of a work piece simultaneously

6) Gang Milling.

It is the machining cycle in which at least two processing cutters are utilized together to perform diverse processing activity all the while. In pack processing the cutters are mounted on the arbor .

7) End Milling.

It is the way toward delivering level surfaces which might be even , vertical and at any point accepting werktable as a kind of perspective . End processing cutters are utilized to achieve this activity..

8) T - slot milling.

In this milling operation first a plain slo59 is cut on the work piece by a side and face milling cutter. the tslot cutter is fed from end of workpiece..

9) Dove - tail milling.

The end of cutter is shape to required dove tail angle. The cutter is passed from one end of the work piece to the other end .

10)  Saw Milling.

It is machining measure which is utilized to create thin scores or openings on the workpiece .

11)  Involute gear cutting.

Stuff processing activity , frequently alluded as stuff cutting includes cutting of various kinds of pinion wheels on a millling machine . For this , either an end factory shaper or a structure mitigated shaper is utilized , which conveys the profile on its slicing teeth comparing to the necessary profile of the hole between gear teeth.