Cordless drill
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Contents |
Cordless Drill
Group II
Ming Huo
Scott Miller
Vishesh Nandedkar
Mark Rockwell
Product Dissection
Before doing anything else, we dissected our drill to take a look at each part up close and understand how the drill works from a technical standpoint.
This is our entire drill, before dissection.
Parts List
| Part | Description | Qty | Function | Photo |
|---|---|---|---|---|
| 001 | Battery | 1 | Provide electricity | 
|
| 002 | Support Handle | 1 | Provide support for non-dominant hand | 
|
| 003 | Supp. Handle Screw | 1 | Secure Support Handle | |
| 004 | Nut | 1 | Secure Support Handle Screw | |
| 005 | Screw | 4 | Secure Case | |
| 006 | Screw | 1 | Secure Case | |
| 007 | Screw | 7 | Secure Case | |
| 008 | Casing Part | 1 | Hold in parts | |
| 009 | Casing Part | 1 | Hold in parts | |
| 010 | Strap | 1 | Helps to provide a secure grip | |
| 011 | Plastic Plate | 1 | Provide drill information | |
| 012 | Large Case R | 1 | Hold in parts | 
|
| 013 | Large Case L | 1 | Hold in parts | 
|
| 014 | Clutch Trigger | 1 | Move clutch | 
|
| 015 | Screw | 3 | Hold motor to chuck | |
| 016 | Motor | 1 | Provide torque | 
|
| 017 | Spacer | 1 | Provides support for motor and gear housing | |
| 018 | Ball Bearings | 14 | Minimize friction of moving parts | |
| 019 | Screw | 2 | Secure Spacer to Motor | |
| 020 | Heat Sink | 1 | Dissipate Heat into the air | 
|
| 021 | Battery Terminal | 1 | Connect Battery to Motor | 
|
| 022 | Trigger | 1 | switches motor on and off | 
|
| 023 | Secondary Clutch Trigger | 1 | Translates movement from Clutch Trigger to Clutch | 
|
| 024 | Clutch/Switch | 1 | Allowes Motor to be engaged, selects direction of rotation | |
| 025 | Clutch Selector | 1 | Selects stopping torque | |
| 026 | Collar | 1 | Covers Chuck | |
| 027 | Chuck Assembly | 1 | Secures bit and translates torque from motor to bit | 
|
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:
(scenario where putting screw in wall)
- Charge Battery
- Remove battery from charger
- Slide battery into drill
- Select bit/tool
- Loosen Chuck
- insert bit and tighten chuck
- select "cut-off" torque
- engage drive or gear
- Place head of screw on bit.
- Hold head of screw to bit (with hand).
- Place Tip of screw to desired object
- Partially squeeze trigger to provide low rotation-speed at first. All this while pushing axially.
- once screw's thread catch the wood, pull trigger to increase torque/omega.
- consistantly adjust to make sure bit is in line with screw.
- 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
- no hands
- 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
