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Revision as of 18:51, 23 January 2007 (view source) Mrockwel (Talk | contribs) ← Older edit		Revision as of 18:52, 23 January 2007 (view source) Mrockwel (Talk | contribs) Newer edit →
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	===Cordless Drill===		===Cordless Drill===
-	==Group II==	+	'''Group II'''
	Ming Huo		Ming Huo
	Scott Miller		Scott Miller

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Revision as of 18:52, 23 January 2007

Contents 1 Cordless Drill 2 Product Dissection 2.1 Function/Purpose: 2.2 Inputs/Outputs: 2.3 Use and Basic operation: 2.4 Different Users / Use Scenarios

Cordless Drill

Group II Ming Huo Scott Miller Vishesh Nandedkar Mark Rockwell

Product Dissection

The following notes were taken prior to and during product dissection.

Function/Purpose:

Spin "bits" with a specified torque (variable stepping torque)

• many different types of "bits"
• Drive screws
• Drill holes
• removing stripped bits
• Mixing paint/batter/dough
• pumping water w/ drill powered pump
• impromptu dremeling
• binding things
• home construction
• alignment
• safety

Inputs/Outputs:

• INPUTS: Axial force
• INPUTS: Trigger Pull
• INPUTS: Electricity (battery)
• INPUTS: Countertorque (resist what motor implements)
• OUTPUTS: Rotational motion
• OUTPUTS: torque

Use and Basic operation:

1. Charge Battery 2. Remove battery from charger 3. Slide battery into drill 4. Select bit/tool 5. Loosen Chuck 6. insert bit and tighten chuck 7. select "cut-off" torque 8. engage drive or gear (scenario where putting screw in wall) 9. Place head of screw on bit. 10. Hold head of screw to bit (with hand). 11. Place Tip of screw to desired object 12. Partially squeeze trigger to provide low rotation-speed at first. All this while pushing axially. 13. once screw's thread catch the wood, pull trigger to increase torque/omega. 14. consistantly adjust to make sure bit is in line with screw. 14. Let go of trigger when screw at desired location.

Different Users / Use Scenarios

• weak wrist/grip
• shaky hands
• can't push hard enough
  • tightening Chuck
  • Actual drilling into material
• Dead battery
• Improper/Hard surface
• Screw stripping
• Screw alignment
• Wrong bits.
• Aligning bit correctly within chuck
• Poor eyesight
• Poor hand-eye cooridnation
• Over-torquing (too soft a surface)
• Poor lighting
• tight areas/corners (awkward shape)
• Hard time hearing maybe can't hear what's happening
  • screw stripping
  • overtorqueing
• not strong enought to switch between F/N/R