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Fabrication of Pneumatic Punching and Riveting Machine Report Download
In our Project work “FABRICATION OF PNEUMATIC CONTROLLED RIVETTING AND PUNCHING MACHINE” we used principles of Pneumatic control system in developing this project work., In our project we are having two control switches, when first switch is pressed it works as a Riveting machine and when the second switch is pressed it works as Punching machine. The vibrating mechanism is a chieved by reciprocating the double acting cylinders, which controlled by solenoid operated 5/2 way DC valve which is actuated through the control system.
The operating pressure required for this system is 5 to 6 bar. The maintenance required for this system is less than the other systems.
For punching operation, a counter weight is added to the pneumatic cylinder force in order to make the punching operation effectively, and also for punching operation a separate Punching tool is fitted and the job is placed on the die, For riveting operation a riveting head
The press is the punching and riveting machine tool designed to punch letter or rivet metal by applying mechanical force or pressure. The metal is punched or riveted to the desired requirement. The presses are exclusively intended for mass production and they represent the fastest and more efficient way to form a metal into a finished punched or riveted product.
Press tools are used to form and cut thin metals. Press tools operation can be simplified to a few simple operations involving a punch a die. There are Nemours types of presses in engineering field, which are used to fulfil the requirements. We are interested to introduce pneumatic system in presses. The main function of pneumatic press is to form or cut thin sheet metals or non metals using pneumatic power. In this project we have used to punching process and riveting process for simple application.
Compressed air from a compressor is used to press the work by means of the piston and piston rod, cylinder through a lever. The high pressurized air striking against the piston tends to push it upwards. This force is transmitted to a punch by means of a lever by its
mechanical advantage. The punch forced downward pierces the work material. This is the main principle of the unit.
The compressed air from the compressor at the pressure of 5 to 7 bar is passed through a pipe connected to the Solenoid valve with one input. The Solenoid Valve is actuated with Control Timing Unit. The Solenoid valve has two outputs and one input. The air entering into
the input goes out through the two outputs when the timing control unit is actuated. Due to the high air pressure at the bottom of the piston, the air pressure below the piston is more than the pressure above the piston. So these moves the piston rod upwards which move up the
effort are, which is pivoted by control unit. This force acting is passed on to punch which also moves downwards.
The punch is guided by a punch guide who is fixed such that the punch is clearly guided to the die. The materials are in between the punch and die. So as the punch comes down the materials are sheared to the required profile of the punch and the blank is moved downwards
through the die clearance. Pneumatic systems require air to operate successfully. As a result of air being extremely abundant, and free, it is easy to restock the system. Safety: As a result of pneumatic systems running on air, safety hazards are significantly reduced. There are
limited occurrences of fires because air is non-flammable, and leakages in the system do not negatively effect the outside environment.
TOOLS USED IN PROJECT:
The pneumatic punching and riveting has been successfully completed with fullest satisfaction. We are optimistic based on the revolution, the machine is going to make in the pressing field. This project may be further developed into a unit with an automatic material
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