sayan shee roll-13 mechanical (lathe machine).pptx
- 3. Making Of Lathe Machine Sketch Of Lathe Machine Lathe forerunner of all machine tools. First application was potter’s wheel. Rotated clay and enabled it to be formed into cylindrical shape. Very versatile(many attachments) Used for turning, tapering, form turning, screw cutting, facing, drilling, boring, spinning, grinding and polishing operations cutting tools fed either parallel or right angles.
- 4. Parts Of Lathe Machine
- 5. Parts Of Lathe Lathe Bed Headstock Quick Change Gearbox Carriage Cross-Slide Tailstock
- 6. • Mounted on top of saddle. • Provides manual or automatic cross movement for cutting tool. • Compound rest. (fitted on top of cross-slide) • Used to support cutting tool. • Swiveled to any angle for taper-turning. • Has graduated collar that ensure accurate cutting-tool settings (.001 in.) (also cross-slide) • Used to move cutting tool along lathe bed. • Consists of three main parts. • Saddle. • H-shaped casting mounted on top of lathe ways , provides means of mounting cross-slide and apron. • Cross-slide. • Apron. • Clamped on left-hand end of bed. • Headstock spindle. • Hollow cylindrical shaft supported by bearings. • Provides drive through gears to work-holding devices. • Live center, faceplate, or chuck fitted to spindle nose to hold and drive work. • Driven by stepped pulley or transmission gears. • Feed reverse lever. • Reverses rotation of feed rod and lead screw. • Contains number of different-size gears. • Provides feed rod and lead-screw with various speeds for turning and thread-cutting operations. • Feed rod advances carriage when automatic feed lever engaged. • Lead screw advances the carriage for thread-cutting operations when split-nut lever engaged. • Upper and lower tailstock castings. • Adjusted for taper or parallel turning by two screws set in base. • Tailstock clamp locks tailstock in any position along bed of lathe. • Tailstock spindle has internal taper to receive dead centre. • Provides support for right-hand end of work. Parts Of the Lathe • Heavy, rugged casting. • Made to support working parts of lathe. • On top section are machined ways. • Guide and align major parts of lathe. Lathe Bed Headstock Quick-Change Gearbox Carriage Cross-Slide Tailstock
- 7. Mechanism