FABRICATION OF PNEUMATIC MULTI PURPOSE CUTTER

ABSTARCT :

Multi tool turret head is used to make more operations like drilling, facing, turning; chamfering, grooving etc… are done sequentially. It has proved to be the most versatile method to machining works on the work piece. This machine includes a first functional portion known as the work holder which helps to hold the work piece. This system is provided with a set of heads in which machining tools are placed. This tools are arranged in sequential manner according to the operations need to be carried out on the work piece. It includes a great number of pinions and gears meshing together in order to be able to index all such movable tools and so as to furnish them with the necessary mechanical torque whilst, for the rest, enabling their relative displacement, whether this be in translation or in rotation. It can be noted that the high number of tools in such first functional portion leads, in known lathes, to a very substantial space requirement and weight. The cutting tools are generally moved about one direction called machining direction. This direction may be single axis sliding or rotational motion. The machining portion, in which are concentrated the tools and more generally the change the tool head in our job requirement.

EXISTING SYSTEM :

Pneumatic systems operate on a supply of compressed air which must be available insufficient quantity and at a pressure to suit the capacity of the system. When the pneumatic system is being adopted for the first time, however it will indeed be necessary to deal with the section of compressed air supply. The key part of any pneumatic machine is supply of compressed air is by means reciprocating compressor. A compressor is a machine that takes in air, gas at a certain pressure and delivers the air at a high pressure.

DISADVANTAGE :

. A compressor is a machine that takes in air, gas at a certain pressure and delivers it at a higher pressure. Compressor capacity is the actual quantity of air compressed and delivered. And the volume expressed is that of the air at intake conditions namely at atmosphere pressure and normal ambient temperature.

PROPOSED SYSTEM :

The pressurized oil, air enters the cylinder chamber through the ports provided. In the rod end cover plate, a wiper seal is provided to prevent the leakage of oil and entry of the contaminants into the cylinder. The combination of wiper seal, bearing and sealing ring is called as cartridge assembly. The end caps may be attached to the tube by threaded connection, welded connection or tie rod connection. The piston seal prevents metal to metal contact and wear of piston head and the tube. These seals are replaceable. End cushioning is also provided to prevent the impact with end caps.

ADVANTAGE :

• Air used in pneumatic systems can be directly exhausted in to the surrounding environment and hence the need of special reservoirs and no-leak system designs are eliminated. • Pneumatic systems are simple in design and economical. • Control of pneumatic systems is easier The disadvantages • Pneumatic systems exhibit spongy characteristics due to compressibility of air • Pneumatic pressures are quite low due to compressor design limitations (less that 250 psi)