Determine shear plane angle.
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- The face milling cutter of D = 200 mm used to cut a block which is 200 mm H, 1=480 mm, if f- 0.7 mm/rev is used and the overrun of the cutter is 12 mm and cutting speed 320 mm/min. Calculate the machining time. CuttinA mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an initial length of 154 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 59.6 minutesA mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an initial length of 154 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 59.6 minutes (a) Find number of passes to finish the entire turning operation ( (b) The actual length of the turning operation in mm ('
- A mild steel specimen of Initial diameter of 51.5 mm is turned to final diameter of 48 mm for an initial length of 151 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.1 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 7 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 48.8 minutes (a) Find number of passes to finish the entire turning operation (b) The actual length of the turning operation in mm ( (c)The time required to complete one single turning operation in minutes (d) Spindle speed in rpmQ24. For the below figure please write its part program. The depth of the cut is 0.25 inches (Finishing operation), while the tool's diameter is 0.5 inches. Consider the speed and feed. -0.75- - - 1.0 60⁰ RO.25 (0, 0) 0.75-Exercises 4 1. A 30 mm diameter mild steel bar is being turned at a spindle speed of 8 rev/s, on a multi-tool centre lathe having eight tools in operation. The feed is 0-3 mm/rev, the specific cutting pressure/tool is 2 000N/mm and the total power consumed for the operation is 14 kW. If the depth of cut is to be kept the same for each tool, calculate the depth of cut/tool in mm.
- A mild steel specimen of Initial diameter of 32.5 mm is turned to final diameter of 25 mm for an initial length of 154 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.3 mm/rev & Depth of cut is 0.5 mm (ii)During machining the tool's approach length is 6 mm, over run length is 3mm (iii) Time required to complete one single turning operation is 2.3 minutes (a)Find number of passes to finish the entire turning operation (b) Total time required to complete the turning operation in minutes (c) Spindle speed in in rpm (d) Cutting speed in m/minutesIf a 0.050" depth of cut is taken on the diameter of a workpiece, by how much will the diameter be reduced?Exercises 4 1. A 30 mm diameter mild steel bar is being turned at a spindle speed of 8 rev/s, on a multi-tool centre lathe having eight tools in operation. The feed is 0-3 mm/rev, the specific cutting pressure/tool is 2 000N/mm2 and the total power consumed for the operation is 14 kW. If the depth of cut is to be kept the same for each tool, calculate the depth of cut/tool in mm. (Ans. 3-8 mm)
- A mild steel specimen of Initial diameter of 30.5 mm is turned to final diameter of 27 mm for an initial length of 153 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii)During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Time required to complete one single turning operation is 3.5 minutes (a)Find number of passes to finish the entire turning operation (b) Total time required to complete the turning operation in minutesA mild steel specimen of Initial diameter of 30.5 mm is turned to final diameter of 27 mm for an initial length of 153 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii)During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Time required to complete one single turning operation is 3.5 minutes (c) Spindle speed in in rpm (= (d) Cutting speed in m/minutes(=QUESTION 1 Calculate the spindle speed in RPM of a lathe turning a 96 millimeter diameter material that requires a cutting speed of 148 SMPM.