___________ occurs mainly on the rake face of cutting tool. Group of answer choices Flank wear Crater wear Nose radius wear Notch wear
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- 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) Tool Material Aluminum Drilling Carbide 90 - 115 Milling - Rough Carbide Milling - Finish Carbide 120 - 240 Turning Carbide Rough Carbide Finish HSS HSS HSS 55 - 60 120 - 240 150 - 270 75 - 105 60 - 90 60 - 90 135 - 180 Brass 40 - 45 75 - 100 45 - 60 60 - 75 90 - 210 105 - 210 135 - 260 35 - 45 55 - 75 60 - 90 75 - 105 60 - 100 Cast Iron 12 - 18 15 - 25 25 - 30 60 - 90 75 - 135 Mild Steel 10 - 15 75 - 105 75 - 120 18 - 27 18 -3- 45 - 60 23 - 40 100 - 145 Stainless Steel 8 - 18 25 - 37 10 - 15 55 - 67 12 - 25 85 - 150Single point cutting tool that has a cutting edge which is formed by grinding the end of a piece of tool steel stock is Forged tool O Bit type tool O Solid tool O Tipped type toolWhat is a tool bit ?
- Identify the machining operation Profiling Facing Face Grooving GroovingThe cutting speed of a drill depends upon the A•material of drill B•type of material to be drilled C•quality of surface finish desired D•all of theseLathe operations and processes What is a single point cutting tool? What are the angles to which the surfaces of the tool bit are grounded? Their function each. Right cut and left cut tool bit
- Tool and cutter grinders can be used to _______ existing cutting tools or to create new, customized cutting tools.Milling Which of these machining processes does not belong to Nontraditional 4point ones? Laser machining Precision grinding machining Electron beam machining O Ultrasonic machining peints Choose the right answer: Having a scratches on surface increase the fatigue strenght The lower the quality of the surface finish, the less of area of a contact will haveWhich one of the given options is Wrong? Tool life usually measured in days None Built-up edge is generated on the surface of cutting tool Strain hardening occurs due to generated high temperature and pressure between work and tool
- Which type of feature doesn't belong to form tolerances? Circularity The profile of a surface Flatness Cilindricity Which option about chief elements in metal cutting is wrong? Feed s is the tool distance moved along the axis per revolution of the workEngineenng wor ly courses / 54_EEPW1240_S4_Mechanical / 21 February - 2 Cutting tool is used to hold the workpiece. Select one: O True O False le 01 dunWrite TRUE is the statement/s is True. If the statement is false, identify the word/s that makes the sentence incorrect and write its corresponding correct answer. 1. High cutting temperature is undesirable because it reduces tool life, produces hot chips and can cause inaccuracies in tool dimension due to thermal expansion. 2. Cubic boron nitride does chemically react with iron and nickel. 3. Nose wear is usually caused by rubbing of the tool along the machined surface of the workpiece.