03-07-2012, 12:28 PM
PROJECT ON PNEUMATIC AUTO FEED DRILLING MACHINE
PNEUMATIC AUTO FEED DRILLING MACHINE.doc (Size: 51.5 KB / Downloads: 346)
INTRODUCTION
The main objective of our project is to perform various machining operations using “Auto feed mechanism” in drilling machine with the help of pneumatic sources. For a developing industry the operation performed and the parts (or) components produced should have it minimum possible production cost, then only industry runs profitability. In small-scale industry and automobile maintenance shops, there are frequent needs of tightening and loosening of screws, drilling, boring, grinding. Further for every operation separate machine is required. This increases the initial cost required, large area requirements and large number of machines is required. In our project the above complicated are rectified.
SELECTION OF PNEUMATICS
Mechanization is broadly defined as the replacement of manual effort by mechanical power. Pneumatic is an attractive medium for low cost mechanization particularly for sequential (or) repetitive operations.
Many factories and plants already have a compressed air system, which is capable of providing the power (or) energy requirements and the control system (although equally pneumatic control systems may be economic and can be advantageously applied to other forms of power).
WORKING PRINCIPLE
The compressed air from the compressor is used as the force medium for this operation. There are two pneumatic cylinder used. One is used for auto feeding mechanism and another one cylinder for workpiece clamping. The pneumatic double acting cylinder is used for feeding mechanism .The air from the compressor enters to the four way junction. From four way junctions one way of air enters to the barrel unit. In side the barrel having vane arrangement is welled. The other way of air enters to the 5/2 solenoid valve. The function of solenoid valves all of air correct time interval. From solenoid valve air enters to the pneumatic double acting cylinder through flow control valve.
From 4-way junction, the air also enters to the Single acting solenoid valve. This valve is used to automatic workpiece clamping Operation. The air is from single acting solenoid valve to single acting pneumatic cylinder.