DML Exam 1 Part 3 Questions And Answers 2022/2023

What are the two basic kinds of milling cutters based on their tooth shape? - Profile-sharpened cutters and form-relieved cutters What is the difference between a light- and a heavy-duty plain milling center? - Light-duty plain milling cutters have many teeth. They are used for finishing operations. Heavy-duty plain mills have few but coarse teeth, designed for heavy cuts Why are plain milling cutters not used to mill steps or grooves? - They do not have side cutting teeth. This would cause extreme rubbing if used to mill steps or grooves What kind of cutter is used to mill grooves? - Side milling cutters How does the cutting action of a straight-tooth side milling cutter differ from that of a staggered-tooth side milling cutter? - Straight-tooth side ills are used only to mill shallow grooves because of the limited chip space between the teeth and their tendency to chatter. Staggered-tooth mills have a smoother cutting action because of the alternate helical teeth; more chip clearance allows deeper cuts Give an example of an application of half side milling cutters - straddle milling When are metal slitting saws used? - slotting or cutoff operations Give two examples of form-relieved milling cutters. - gear tooth cutters and corner rounding cutters When are angular milling cutters used? - To mill V-notches, dovetails, or chamfers. When facing the spindle, in which direction should the right-hand cutter be rotated to cut? - Counterclockwise when viewed from the outside end In relation to the workpiece, where should the clamping bolt be located? - A clamping bolt should be close to the workpiece and a greater distance away from the support block What precautions should be taken when clamping on a finished surface? - Finished surfaces should be protected with shims from being marked by clamps or rough vise jaws When are screw jacks used? - to support workpieces or to support the end of a clamp What is the reason to clamp a stopblock to the table? - counters the cutting forces to keep the workpiece from slipping