Tool post spanner For making adjustments to the tools Chuck key Used for tightening or loosening the bolts on the chuck Parting tool To remove finished parts. Procedure •We took a mild steel round 25*80 mm long piece and set it in the chuck with the required length by the use of chuck key. •Then marked the job as per given measurements with the help of steel rule and calipers. •Did the steps and cut edges with the help of side cutting tool. •Repeated the procedure 1 to 4 for mild steel round 25*50mm •Went to drilling process, and made 10 mm of diameter for mild steel 25*80. Did the free and plane operations and finish the job as per given sketch. Calculations required The calculations are for both turning and drilling. turning N = speed in revolutions/minute (RPM) k = speed (V) and part diameter (Di ) V = needed cutting speed D1= is largest part diameter drilling Drill speed k is a Constant D is Diameter of the drill V is the cutting speed ? Pictures: Discussion Majorly the two processes that were involved in our experiment were turning and drilling. The machine used was a manual lathe machine.
Overheating of the tool and the work piece proved to be the basis of many errors seen within the finished work piece. other problems during the processes were creating of long chips which had to be cut in order for the experiment to go on further. Breaking of the tool was also experienced. Conclusion The machine used was a manual lathe machine in which most of the processes had to be worked out and supervised by a trained professional . the major errors in this experiment are caused by the mistakes of the handler.
The rotation of the work piece, which is handled by the supervisor, must be precise and constant; otherwise the problems which arrive are the breaking of the tool and the creation of long chips. to rectify this error the use of automated lathe machine can be done. In this day and age automated lathe machines are the way to go because manual lathe needs hours and hours of supervision and in the end the product is not even as accurate as a product that can be used by a consumer. A better coolant and a cooling method can also be used to reduce the heat which can lead to inaccuracy.