me_350_-_lect_7_-_ch_22___23.20090914.4aaea8dda51430.36550243

Me_350_-_lect_7_-_ch_22___23.20090914.4aaea8dda51430.36550243

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Chapter 22 - MACHINING OPERATIONS AND MACHINE TOOLS: Turning and Related Operations Drilling and Related Operations Milling Machining Centers and Turning Centers Broaching ME 350 – Lecture 7 – Chapter 22 & 23
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Turning Single point cutting tool removes material from a rotating workpiece to generate a cylinder Performed on a machine tool called a: Variations of turning performed on a lathe: Facing Contour turning Chamfering Cutoff Threading
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Cutting edge cuts an angle on the corner of the cylinder, forming a " chamfer " Tool is fed radially into rotating work at some location to cut off end of part
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Tool is fed radially: Tool follows a contour that is other than straight Pointed form tool is fed at a large feed rate, thus creating threads
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Turret Lathe Tailstock replaced by “turret” that holds up to six tools Tools rapidly brought into action by indexing the turret Tool post replaced by four‑sided turret to index four tools Applications: high production work that requires a sequence of cuts on the part
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Multiple Spindle Bar Machines More than one spindle, so multiple parts machined simultaneously by multiple tools. Example: After each machining cycle, spindles (including collets and workbars) are indexed (rotated) to next position
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Boring Difference between boring and turning: Boring is performed on the diameter of an existing hole Turning is performed on the diameter of an existing cylinder Boring machines Horizontal or vertical - refers to the orientation of the machine spindle’s:
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Enlarges hole, Provides better Improves Used to provide internal screw threads on an existing hole. Tool called a
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press designed for large parts
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This note was uploaded on 01/15/2010 for the course ME 350 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

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Me_350_-_lect_7_-_ch_22___23.20090914.4aaea8dda51430.36550243

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