Design Modification in Special Purpose Machine by Introducing Poka-Yoke Techniques

This paper mainly comprises of design and fabrication of torque value check by using pneumatics as a base concept. The machines which detect the play of the wheel end which is placed in the steering column for converting the rotational motion to angular motion of the tyres. The torque meter which displays the play of the wheel end through a digital output. Since the customers prefer their own specification there is a chance of misplacement in the batch production. The steering column manufacturing unit faces a serious crisis. In order to overcome this Japanese technique called Poka Yoke (error proof) has been infused with this design. The Programmable Logical Circuits (PLC) controlled unit which plays the vital role in the sequencing the pneumatic cylinders according to operations planned. The sensors placed in the proper orientation helps the worker to detect the error in the work piece. With this an additional printer device is installed which automatically prints the label code for the product. The sensor allows the operator to paste the label in the correct position. If the label is positioned in the wrong place the led emits red light to glow or the green light glows which indicates the part is correct.