b) The end of a large tubular work part is faced on a vertical boring mill....
02: A bar of 60 mm diameter and length of 3 meter is used to produce 500 pieces on a center lathe having the following characteristics: . Maximum rotational speed .Minimum rotational speed .Number of speeds Lathe overall efficiency The turning process is performed at 40 m/min cutting velocity. 0.5 mm/rev longitudinal feed, 0.25 mm/rev transverse feed and 2 mm depth of cut REQUIRED 1. Calculate the TWELVE rotational speeds in rpm. 2. What rotational speed would you choose? 3....
ion is performed on a steel part using a 12.7-mm-diameter twist drill mmirev. Determine (a) cutting time of the operation and (b) max metal removal 2. (10 pts) A drilling operat with point angle 118. The hole is a blind hole with a depth 60 mm. Cutting speed 15 m/min and feed- 0.2 rate.
1115 LU ULJU III 18.3 A tapered surface is turned on an automatic lathe. The workpiece is 550 mm long with mini- mum and maximum diameters of 100 mm and 200 mm at opposite ends. Automatic controls on the lathe permit the surface speed to be maintained at a constant value of 200 m/min by adjusting the rotational speed as a function of workpiece diameter. Feed = 0.25 mm/rev, and depth of cut = 3.0 mm. The rough geom- etry...
answer a) is 1.35 and b) 7.16 i want the answer for c Problem #4 A slab milling operation is performed on the top surface of a steel rectangular workpiece 12.0 in fong by 2.5 in wide. The helical milling cutter, which has a 3.0 in diameter and ten teeth, is set up to overhang the width of the part on both sides. Cutting speed is 125 ft/min, feed is 0.006 in/tooth, and depth of cut - 0.300 in.? Determine...
You are required to write a part program that will make an end
mill cut the curved slot shown below. The end mill should enter the
slot at point (x,y) = (5 in, 0 in), cut with a depth of cut = 0.1
in until point (x,y) = (-5 in, 0 in), and cut with a depth of cut =
0.1 in back to (x,y) = (5 in, 0 in). The feed = 20 in/min and the
spindle speed =...
Total Point 6 Problem-2 and maximum diameters of 100 mm and 200 mm at opposite ends. Automatic controls on the lathe A tap permit the surface speed to be maintained at a constant value of 200 m/min by adjusting the rotational speed as a function of workpiece diameter. Feed - 0.25 mm/rev, and depth of cut 3.0 mm. The rough geometry of the piece has already been formed, and this operation will be the final cut. Determine (a) the time...
A 3.00 inch diameter workpiece that is 25 in long is to be turned down to n2.384 inches. Process Specifications: a) Cutting Speed (V) = 300 ft/min, b) Feed (f) = 0.015 in/rev c) Depth of cut (d) = 0.044 in The bar will be held in a chuck and supported on the opposite end in a live center. With this work-holding setup, one end (15 inches) must be turned to diameter; then the bar must be reversed to turn...
Question 1 A turning operation is carried out on aluminum. Based on the specific energy values in Table 20.2, determine material removal rate and cutting power in the operation under the following sets of cutting conditions: (a) Cutting speed 5.6 m/s, feed 0.25 mm/rev, and depth of cut 2.0 mm; and (b) cutting speed- 1.3 m/s, feed 0.75 mm/rev, and depth 4.0 mm. Question 2 Consider a turning operation performed on steel whose hardness 225 HB at a cutting speed...