Problem 3 (85 pts) 2.000 dia. 2.000 2.500 1.000 dia. 0.500 dia. through hole Dimensions in inches Workpiece material: Free machining steel 2.000 in. diameter bar stock Above figure shows part to be produced on a CNC turret lathe (assume that the workpiece is held in a universal chuck) from free machining low carbon steel with a batch of 10,000 parts. Stock bar dimensions are $2 in X 2.55in. The process plan is given as: 1. 0.05 in. of material is faced off from the end of the part 2. For 1 in diameter portion, first rough turned to 1.03in & then finish turned to 1in 3. Center drilling operation 4. Drill the through hole Consider following assumptions: The machining time for center drilling operation = 5 sec The turning tool used for operation 1 & 2 has a disposable carbide insert and the drills used for operation 3 & 4 is made from high speed steel. (a) Estimate the material cost per part. (5pts) (b) Estimate the non-productive time per part. (10pts) (c) Estimate the production time per part by filling the partially-filled DFM worksheet as shown below. The descriptions on how the worksheet was filled are not required but would help if the filled numbers were incorrect. (55pts)