Automatic Machine

• Automatic Machine Or simply automats are machines In which the series of operations all The operations Required To Finish Off The Work Piece Are Done Automatically Without The Attention Of An Operator.
• All movements of cutting tools, their sequence of application, raw material feeding, parting off and unloading of finished work piece are all done by the machine itself.
• The purpose of the operator is to only set the sequence of machining operations and in some cases alignment of tools is also done by the operator. Apart from this calibration of tools is also done by the operator
• The automatic machine performs the entire set of operations in proper sequence and produces the desired product in desired quantities.
• In automats the operating cycles are automated by a definite control system like mechanical, electrical, hydraulic or pneumatic or a combination of those systems.

Advantages of Automats

1. Mass Production of identical parts.

2. High Accuracy is Maintained

3. Time of Production is minimized

4. The Bar stock is fed automatically.

Automats

1. Classification according to the type of stock material used

• Bar stock machine : the machines which are designed to produce various components using bar or pipe stock are called as bar automatics
• Chucking machine: they are used for machining separate blanks like castings, forgings, etc.
• Classification according to the number of spindles
• Single spindle automats: they machine single component at a time includes common machines such as automatic cutting off machines, swiss type automatic screw machine, etc.
• Multi spindle automats: they have 2 to 8 spindles. The spindles are arranged in a carrier, which is periodically indexed from position to position.
• Classification according of the direction axis of machine spindles
• Horizontal spindle type: they have their spindle in horizontal direction and are used for machining long workpieces of small diameters.
• Vertical spindle type: they have their spindles in vertical direction and are used for machining workpieces of larger diameter but shorter in length
• Classification according to the feed control
• Single cam shaft rotating at constant speed
• Single cam shaft with two speeds
• Two cam shaft
• Classification according to the use
• Single purpose machine
• General purpose machine

The cam draws power from main spindle

The cam draws the power from the main spindle through a set of gears called cyclic time change gears.

The tools used in turret of single spindle automatic lathes

Form tools, turning tools and, drilling tools

The other names spindle automatic lathes

Screw cutting machines

The types of single spindle automatic lathes

1. Automatic cutting off machine
2. Automatic screw cutting machine
3. Swiss type automatic lathe machine