Design and Manufacture of Tunnel Checking Machine

The basic aim of the machine is to ensure that the buts are present at the part at their positions. This is typically done by with the help of sensors or physically, sensors are quite expensive so the method we use is that with electrical conductivity. Electrical conductivity in sense of positive and negative terminals with the circuit and indicating lights. The machine is fully automatic as it checks the presence of buts by self and shows it. Until the operator fix the part on stand after that the machine operate itself. It is basic combination assembly of Pneumatics, circuit board, mechanical frame, metallic and non metallic material; basically it is combination and made up with them. For automatic working of machine it has Delta PLC DI-DO-25 25 programmed. For checking the job positive supply is given to the backlite plate and negative is taken from Tunnel, 24V DC supply is given to the circuit as it is sufficient and safe to operating. The job is mounted on not metallic hubs and clamped with the pneumatics. The backlite plate made up of Nylon has Silver plated Copper bushes as the overall plate will not conducted and definite part will conducted. Tunnel has 21 buts on it welded the aim of the is to check whether they are present or not. To show they are present or not there is 22 LED lights on electric panel. If the buts are all presents all LED lights will be green, if some buts are absent the definite numbered light will Red. The part is OK and all buts are present the machine will stamp it OK mark and unlocks the fixture. If the part is. NOT OK in this case operator will turn the panel on.