MT: Motor taladro S1: Subir taladro S2: Bajar taladro Alimentación C1R: Cilindro recogido с 1 M A S Cargador TA: Taladro arriba Taladro TB: taladro abajo Di1 Dio с C2R: Cilindro recogido TTAR: Test arriba R1: Subir testador Testador R2: Bajar testador Evacuación Di2 PE M Rotación plato TTAB: Test abajo
JUST GIVE ME THE GRAFCET DIAGRAM!! URGENT!!!!!!
The system consists of a one-piece drilling and testing station.
• Feeding station: the piece falls by gravity in front of a cylinder (C1), which moves until the piece is placed in the receptacle where the Di0 sensor is located (when the process begins, the sensors move next to the plate) indicating that the part is in position, then the cylinder moves back to sensor C1R.
• Drilling station: the piece is held by a cylinder C3, the cylinder has a sensor C3A (not seen in the figure) that indicates when the cylinder has come out, then a signal S2 (lower drill) is activated until which is detected by TB, next step the drill rises (S1), once the drill is at the top the cylinder C3 releases the piece.
• Test station: the test process begins by sending a signal for the tester to go down to the TTAB sensor, then it begins to move back to TTAR, followed by moving cylinder 2 and evacuating the part. In the event that the tester cannot reach the end (TTAB), all processes must stop safely until the operator presses a reset button (A), at which time the processes will continue.
NOTES:
• When starting (starting) the system, the drill motor must turn on and remain that way for the entire time the system is running.
• All processes must be carried out simultaneously if there is a piece in the receptacle located in front of the process, otherwise only the processes with a piece in front are carried out (only the station or stations where there are pieces operate)
• The system starts and ends with all empty receptacles: Di0, Di1 and Di2 = 0.
• The safe condition means that the drill must have been raised (to avoid possible damage to the drill bit) and the tester must be in the upper position to facilitate the inspection of the defective part.
• The tray rotates when all the processes have finished (it is concurrent), and A motor allows 120° rotation which is sensed by a sensor M, stops the rotating plate when completing 120° just after the rotation.
• When stopping the system (button S) the processes will continue until there are no pieces in the receptacles.
It has a control button panel:
• Start button
• Button A (reset)
• Push button S (stop)
• PE button (emergency stop).
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