a. If rough milling of mild steel is performed using High Speed Steel (HSS) side and facemilling cutter of 100 mm diameter, what rpm should be used.b. If finish turning of a shaft is done to reduce its diameter from 24 mm to 20 mm usingcarbide tool, what rpm should be used.Metric Surface Speeds in m/min (Cutting Speed)Tool MaterialAluminumDrillingCarbide90 - 115Milling - RoughCarbideMilling - FinishCarbide120 - 240TurningCarbide Rough Carbide FinishHSSHSSHSS55 - 60120 - 240150 - 27075 - 10560 - 9060 - 90135 - 180Brass40 - 4575 - 10045 - 6060 - 7590 - 210105 - 210135 - 26035 - 4555 - 7560 - 9075 - 10560 - 100Cast Iron12 - 1815 - 2525 - 3060 - 9075 - 135Mild Steel10 - 1575 - 10575 - 12018 - 2718 -3-45 - 6023 - 40100 - 145Stainless Steel8 - 1825 - 3710 - 1555 - 6712 - 2585 - 150

Since you have asked multiple questions so we will solve any one of themIf you want any specified…

a. If rough milling of mild steel is performed using High Speed Steel (HSS) side and face milling cutter of 100 mm diameter, what rpm should be used. b. If finish turning of a shaft is done to reduce its diameter from 24 mm to 20 mm using carbide tool, what rpm should be used. Metric Surface Speeds in m/min (Cutting Speed) Milling - Finish HSS 75 - 105 60 - 90 25 - 30 23 - 40 12 - 25 Turning Drilling Carbide 90 - 115 75 - 100 Milling - Rough HSS Carbide Carbide Rough Carbide Finish 150 - 270 135 - 260 Tool Material HSS 55 - 60 40 - 45 12 - 18 10 - 15 8 - 18 Aluminum Brass 135 - 180 60 - 75 Carbide 120 - 240 90 - 210 60 - 90 120 - 240 45 - 60 105 - 210 Cast Iron 35 - 45 15 - 25 55 - 75 60 - 90 60 - 90 75 - 135 18 -3- 10 - 15 75 - 105 60 - 100 Mild Steel 18 - 27 25 - 37 75 - 105 45 - 60 55 - 67 100 - 145 Stainless Steel 75 - 120 85 - 150

a. If rough milling of mild steel is performed using High Speed Steel (HSS) side and face milling cutter of 100 mm diameter, what rpm should be used. b. If finish turning of a shaft is done to reduce its diameter from 24 mm to 20 mm using carbide tool, what rpm should be used. Metric Surface Speeds in m/min (Cutting Speed) Milling - Finish HSS 75 - 105 60 - 90 25 - 30 23 - 40 12 - 25 Turning Drilling Carbide 90 - 115 75 - 100 Milling - Rough HSS Carbide Carbide Rough Carbide Finish 150 - 270 135 - 260 Tool Material HSS 55 - 60 40 - 45 12 - 18 10 - 15 8 - 18 Aluminum Brass 135 - 180 60 - 75 Carbide 120 - 240 90 - 210 60 - 90 120 - 240 45 - 60 105 - 210 Cast Iron 35 - 45 15 - 25 55 - 75 60 - 90 60 - 90 75 - 135 18 -3- 10 - 15 75 - 105 60 - 100 Mild Steel 18 - 27 25 - 37 75 - 105 45 - 60 55 - 67 100 - 145 Stainless Steel 75 - 120 85 - 150

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter5: Turning

Section5.3: Machining Operations On The Lathe

Problem 5RQ: Calculate spindle RPM and machining time for cutting a 1.5" diameter 4" long at 225 SFPM using a...

See similar textbooks

Similar questions

Abrasive machining makes use of ______ to remove material.
Calculate spindle RPM and machining time for cutting a 1.5" diameter 4" long at 225 SFPM using a feed rate of 0.004".
In CNC lathes, to maintain constant cutting speed when feeding of the tool from the circumference to the center of the workpiece, the spindle speed (n) is needed to be: a/Increased b/Decreased c/Maintained the same
To facilitate the milling (roughing) work of a cast steel material using a 1.5 inch diameter cutter choose between the two available stock. Find the speed of the cutter in rpm. – high speed steel cutter with a cutting speed of 50 fpm or – carbide tipped cutter with a cutting speed of 200 fpm.
1.To mill material having a cutting speed of 40 fpm. What should be the RPM of 1.25 inches diameter cutter. 2. Give the RPM of a 5 inches cutter. Material, cold drawn steel having A cutting speed of 100 fpm.
Using the formula (below), calculate the revolutions per minute (rpm) a drill press spindle should rotate using a Ø1⁄2 HSS twist drill if the cutting speed will be 90 surface feet per minute, SPM?N~[4xV]÷DN = _____________________________________________ RPM’s
Q1. A job of diameter 30 mm is being machined at feed of s = 1.0 mm/rev and spindle speed of n = 500 rpm, with a tool of orthogonal rake angle ? = 5° and primary cutting edge angle ? = 60°. Determine the height at which the tool tip should be set to achieve actual rake angle of 0°.
Conventional lathe and a CNC lathe are under consideration for machining a given part, data shown
In machining operation, if velocity doubled then the tool life reduced to 1/16 th of initial value find the Taylor's tool life index (n) for a machining operation.
In a drilling operation under a given condition, the tool life found to decrease from 20 mint to 5 mint due to increase in drilling speed from 200 rpm to 400 rpm. What will be the tool life of that drill under the same condition if the drill speed is 300 rpm.
A twin-spindle drill simultaneously drills one ½-in hole and one ¾" through a 1" wide work piece. Both holes are twist drill with 118° point angles. cutting speed for material is 230 ft/min. The rotation speed of each spindle can be configured individually. The feed rate of both holes must be set to the same value, since both spindles go down at the same speed. The forward speed is set in such a way that the speed total metal removal does not exceed 1.50 in3 /min. Determine: a) the velocity maximum feedrate (in/min) that can be used, b) the individual feedrates (in/rev) that result in each hole and c) the time required to drill the holes.
A single-point cutting tool with 12° rake angle is used to machine a steel work-piece. The depth of cut, i.e. uncut thickness is 0.81 mm. The chip thickness under orthogonal machining condition is 1.8 mm. What is the shear angle.