I want to make a project on fabrication of pneumatic quick return mechanism, so please help me.

manufacture of the pneumatic mechanism for rapid return
Abstract:
The work of liberation is the most important act to process. THES is commonly used in the machine shop.
1. to undertake work in the right position
2. release the job quickly
3. work hard
4. to prevent vibration while the job processing occurs.
There are many kinds of work of devices as machine vices swivel universal Vice, vices, pipe Vice, T-Bolt clamps ' U ', Goose neck clamp, angle plate, appliances and so on THES has all mechanical type of clamping devices. In this project the air we deal in drilling rig Vice plain. Here is quick loading and unloading. The work can be carried out more strictly.

INTRODUCTION
There are three main types of work holding devices:
1. Mechanical type
2. Hydraulic type
3. type of pneumatic
The mechanical type, screw the movable jaw alignment rod. One end is connected to the mobile sponge, and it passes through the fixed type nut. When we turn one end of the rod will rotate its screw in the Groove and, in turn, moves the moveable jaw. Here the rotary motion into reciprocating motion is converted to.
The hydraulic type at one end of the piston rod is connected to the mobile sponge and slide the piston in the cylinder. Here the hydraulic fluid drives the piston; This in turn drives the mobile sponge. Here the basic movement is only a back-and-forth motion. Pneumatic type is the same as that of the hydraulic type. Here instead of hydraulic fluid, air is used.


Advantages:

1. machine downtime is reduced.
2. compared with mechanical defects, it consumes less time for clamping and unclamping operation.
3. reduce manual labor
4. Hencse, production speed Higher
5. in this mechanism There is no backlash.
DISADVANTAGES:

1. Initial high cost.
2. may be a choice of air leakage
Stroke length 3. The cylinder is constant

APPLICATION:

1. to work hard during processing.
2. quick attachment and unclamping of the job.

PROPOSAL:

It is not only designed for drill Vice, using the large cylinder capacity and it can be used for clamping and unclamping job for most processes.