|
|
Line 66: |
Line 66: |
| |- | | |- |
| | | |
- | | style="text-align: center;" | C7 | + | | style="text-align: center;" | 7 |
- | | Handle bolt | + | | Inline ball joint |
- | | style="text-align: center;" | 4 | + | | style="text-align: center;" | 1 |
- | | style="text-align: center;" | 0.7 oz | + | | style="text-align: center;" | NA oz |
- | | Attaches Fiberglass handle to Connecting arm | + | | Translates rotation of lead screw to translation of central rod and connects the two parts |
| | Steel | | | Steel |
- | | Upset forging | + | | ??? |
| | [[Image:Complex_post_hole_digger_handle_bolt.jpg|100px]] | | | [[Image:Complex_post_hole_digger_handle_bolt.jpg|100px]] |
| |- | | |- |
| | | |
- | | style="text-align: center;" | C8 | + | | style="text-align: center;" | 8 |
- | | Handle washer | + | | Shovel link |
- | | style="text-align: center;" | 6 | + | | style="text-align: center;" | 2 |
- | | style="text-align: center;" | 0.2 oz | + | | style="text-align: center;" | NA oz |
- | | Increases surface area over which compressive force of Handle bolt is applied, protects Fiberglass handle from damage that would caused by tightening/rotating nut or bolt | + | | Connects central rod to shovels |
- | | Steel | + | | T 6061 Aluminum |
- | | Stamping | + | | Extrusion |
| | [[Image:Complex_post_hole_digger_fender_washer.jpg|100px]] | | | [[Image:Complex_post_hole_digger_fender_washer.jpg|100px]] |
| |- | | |- |
| | | |
- | | style="text-align: center;" | C9 | + | | style="text-align: center;" | 9 |
- | | M8 x 1.25 Lock nut with nylon insert | + | | Shovel |
- | | style="text-align: center;" | 7 | + | | style="text-align: center;" | 2 |
- | | style="text-align: center;" | 0.1 oz | + | | style="text-align: center;" | NA oz |
- | | Threads onto bolt and tightened to join parts together. Nylon insert prevents nut from loosening | + | | Contain dirt when digging |
| | Steel | | | Steel |
- | | Forging | + | | Stamping |
| | [[Image:Complex_post_hole_digger_small_locknut.jpg|100px]] | | | [[Image:Complex_post_hole_digger_small_locknut.jpg|100px]] |
| |- | | |- |
Table 4.2: Individual Components of Complex Post Hole Digger
Part Number | Name | Qty. | Weight | Function | Material | Manufacturing Process | Image
|
1
| Shaft
| 1
| NA oz
| Constrains inner parts of tool and handles physical stresses of digging, etc.
| T 6061 Aluminum
| Extrusion
|
|
2
| Guide bushing
| 2
| NA oz
| Constrains central rod to maintain linear motion within shaft
| T 6061 Aluminum
| Lathe???
|
|
3
| Central rod
| 1
| NA oz
| Transmits rotational motion of lead screw into translational motion, forcing shovels closed
| T 6061 Aluminum
| Extrusion
|
|
4
| Lead screw
| 1
| NA oz
| Transmits rotation of handle into translation of central rod
| Steel
| Automated CNC lathe/threading machine
|
|
5
| Lead screw nut
| 1
| NA oz
| Constrains lead screw
| Brass
| Automated CNC milling
|
|
6
| Lead nut bushing
| 1
| NA oz
| Constrains lead nut and locates it within shaft
| T 6061 Aluminum
| Lathe???
|
|
7
| Inline ball joint
| 1
| NA oz
| Translates rotation of lead screw to translation of central rod and connects the two parts
| Steel
| ???
|
|
8
| Shovel link
| 2
| NA oz
| Connects central rod to shovels
| T 6061 Aluminum
| Extrusion
|
|
9
| Shovel
| 2
| NA oz
| Contain dirt when digging
| Steel
| Stamping
|
|
C10
| M8 washer
| 3
| 0.05 oz
| Increases surface area over which compressive force of the tightened bolt and nut is applied, placed between nut and surface and/or bolt head and surface to prevent damage to surface when nut is tightened
| Steel
| Stamping
|
|
C11
| Bushing
| 1
| 0.7 oz
| Used to align two Connecting arms and create a low friction surface for Connecting arms to pivot about
| Brass
| Roll forming
|
|
C12
| Plastic spacer
| 1
| 0.05 oz
| Placed concentric with Bushing between two connecting arms to provide low friction surface and prevent the arms from wearing against one another
| Plastic
| Injection molding
|
|
C12
| Scissor pin bolt
| 1
| 0.3 oz
| Joins two handle assemblies together, passes though Bushing to create main joint around which handles pivot
| Steel
| Upset forging
|
|
C13
| M10 washer
| 1
| 0.1 oz
| Increases surface area over which compressive force of the tightened bolt and nut is applied, placed between nut and surface and/or bolt head and surface to prevent damage to surface when nut is tightened
| Steel
| Stamping
|
|
C14
| M10 lock nut with nylon insert
| 1
| 1.3 oz
| Threads onto scissor pin bolt and tightened to join connecting arms together. Nylon insert prevents nut from loosening
| Steel
| Forging
|
|
C15
| Digging head
| 2
| 26.3 oz
| Provides means of digging into dirt, sizing the hole, and removing dirt
| Steel
| Stamping
|
|
C16
| Digging head connecting bolt
| 2
| 0.8 oz
| Joins connecting arm to digging head, allows connecting arm and digging head to pivot
| Steel
| Upset forging
|
|
C17
| Digging head pivot bolt
| 1
| 0.8 oz
| Connects two digging heads together, creates pivot point around which digging heads open and close
| Steel
| Upset forging
|
|
C18
| Large plastic spacer
| 2
| 0.1 oz
| Placed on pivot bolt to align two digging heads and protect pivot bolt
| Plastic
| Injection molding
|
|
C19
| Small plastic spacer
| 1
| 0.05 oz
| Placed on pivot bolt to align two digging heads and protect pivot bolt
| Plastic
| Injection molding
|
|