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Piston Project: Machining Basics

Piston Project: Machining Basics. SAAST 2005 Robotics University of Pennsylvania Dave Cappelleri. Machining Overview - Handle. Rough Cut Stock to Length – Band Saw Face Right Surface – Lathe Face Left Surface /Make Part Desired Length – Lathe Turn Outer Surface – Lathe

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Piston Project: Machining Basics

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  1. Piston Project:Machining Basics SAAST 2005 Robotics University of Pennsylvania Dave Cappelleri

  2. Machining Overview - Handle • Rough Cut Stock to Length – Band Saw • Face Right Surface – Lathe • Face Left Surface /Make Part Desired Length – Lathe • Turn Outer Surface – Lathe • Drill Hole – Lathe • Tap Hole – Lathe/Hand Ø1/2 4 0.75 10-24 2 3 5 6 1.5

  3. Machining Overview - Piston • Face the Right/Left Surface – Lathe • Turn the Outer Surface – Lathe • Cut Part in Half – Horizontal Saw • Machine to Length – Lathe • Mill Flat Surface – Milling Machine • Drill Hole – Milling Machine • Counter Bore Hole – Milling Machine • Tap Hole - Hand 3 10-24 0.62 4 7 Ø1.5 1 2 1.25 1 5 0.75 0.81 6

  4. Machining Overview – Cam Wheel • Face Upper/Lower Surface – Lathe • Drill Hole in Center – Lathe • Counter Bore Hole in Center – Lathe • Drill Second Hole – Milling Machine • Counter Bore Second Hole – Milling Machine 0.75 Ø3/8 Ø 2 Ø3/8 A A 4 2 Ø1/4 3 AA 1 0.25 1 0.19 0.32 5 Ø1/4

  5. Machining Overview – Body • Face the Right Surface – Milling Machine • Face the Left Surface – Milling Machine • Machine Rest of Body – CNC Machine 2 3 1 5.25 Machining Overview – Connection Arm • Draw Connection Arm in AutoCAD • Laser cut with X-660 Laser Cutter

  6. Machining Basics • http://www.seas.upenn.edu/~robo2005/machineTut.htm • Primary Machining for Piston Project: • Lathe • Milling Machine • CNC Machine • Primary Machining for Final Project: • Laser Cutter

  7. Lathe Basics • Purpose: To rotate a part against a tool whose position it controls • Useful for fabricating parts and/or features that have a circular cross section

  8. Lathe Basics Lathe Chuck • Spindle: Part of lathe that rotates • Workholding attachments held in spindle - three jaw chucks, collets, and centers Spindle Spindle Rotation Forward/Reverse Main Power On/Off Spindle Speed

  9. Lathe Basics • Tailstock: supports end of the workpiece, or hold tools for drilling, reaming, threading, or cutting tapers. • Carriage: controls and supports the cutting tool • Saddle: mates with and slides along the ways. • Cross slide: controls transverse motion of the tool • A tool compound that allows angular tool movement. Quick Change Tool Holder y (Axis of rotation) x Tailstock Move the SADDLE along the y-axis Move the CROSS SLIDE along the X-axis

  10. Lathe Basics QUICK CHANGE TOOL HOLDER LOCK HANDLE POWER FEED ON/OFF TOOL SADDLE POWER FEED ON/OFF UP-ON, DOWN-OFF CROSS SLIDE POWER FEED ON/OFF

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