Determine shear
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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 lathe cross slide uses a diameter-reading micrometer collar. If the cross slide is advanced by 0.150". what depth of cut would result?What is the cutting speed of turning in the unit of m/min, when main axis spindle speed is 2,409 rpm and external diameter is 86mm ? Answer in 2 decimal points. Calculate the theoretical spindle rotational speed in rpm required to drill a 1 mm hole in copper using high speed steel drill. The recommende cutting speed is as following. The thickness of the copper plate is 24. (Leave the answer in numerical value, no need to key in 'rpm') Typical cutting speeds (m/min) High speed steel Material Tungsten carbide Aluminum 100 500 60 330 Copper Hard brass 45 230 Bronze 35 180 Mild steel 28 250 Cast iron 20 160
- Q24. 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) 0.75-1. List the operations and the tools needed to make the following shape.2. Find the speed of rotation (RPM N) of each tool during roughing andfinishing.The material of the piece is Stainless Steel (C45) with CARBIDE TOOL.The thickness of the chip in up milling is at the beginning of the cut. Select one: a. Zero b. No cutting C. Minimum d. Maximum
- QUESTION 5 Determine the spindle speed (rpm), the feed rate (in/min) and the cutting power required for turning a 1º diameter copper rod with a depth of cut of 0.1" using a cemented carbide tool. O N=287 RPM, F-25.8 in/min, P=9.7 hp ON=2866 RPM, F=258 in/min, P=97 hp ON=1146 RPM, F-25.8 in/min, P=97 hp O N= 11460 RPM, F-340 in/min, P=130 hp ON= 1146 RPM, F-34 inimin, P= 13 hp ON= 115 RPM, F-3.4 in/min, P=1.3 hp QUESTION 6 It is required to face mill an aluminum block to size it down from 2" to 1.5" thick using a 3" diameter 2-toothed carbide cutting tool. The block is 6.0" wide and 6" long. The entire tool diameter engages the workpiece during the cut. Calculate the recommended spindle speed in revolutions per minute, feed per tooth, and cutting power required. O N=1529 RPM, f= 0.026 in/rev/tooth, P = 36 hp O N-3820 RPM, f= 26 in/revitooth, P=27 hp O N-3820 RPM, f= 0.052 in/rew/tooth, P=27 hp ON-382 RPM, F= 0.026 in/revitooth, P = 0.027 hp O N-3820 RPM, f= 0.052 in/rev/tooth, P=2.7 hp…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.As the cutting speed for mild steel is 100ft/min and RPM is 1000, find the diameter of the cutting tool. If the tool is two-flute end mill. Then, also find the feed rate. Given, 0.002 in. feed per tooth.
- A 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 rpm