Lead-screw post hole digger

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(→'''List of Parts''')
(→'''List of Parts''')
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_grip.jpg|100px]]
+
| [[Image:Shaft_PHD.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_fiberglass_handle.jpg|100px]]
+
| [[Image:Central_Rod_PHD.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_grip.jpg|100px]]
+
| [[Image:Crank_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| Stamping
| Stamping
-
| [[Image:Complex_post_hole_digger_small_locknut.jpg|100px]]
+
| [[Image:Shovel_PHD.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_grip.jpg|100px]]
+
| [[Image:Shaft_Handle_PHD.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_small_locknut.jpg|100px]]
+
| [[Image:Shaft_Peg_PHD.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_handle_end_cap.jpg|100px]]
+
| [[Image:Guide_Bushing_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| Automated CNC lathe/threading machine
| Automated CNC lathe/threading machine
-
| [[Image:Complex_post_hole_digger_wooden_handle_insert.jpg|100px]]
+
| [[Image:Lead_Screw_PHD.jpg|100px]]
|-
|-
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| Brass
| Brass
| Automated CNC milling
| Automated CNC milling
-
| [[Image:Complex_post_hole_digger_connecting_arm.jpg|100px]]
+
| [[Image:Lead_Screw_Nut_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| ???
| ???
-
| [[Image:Complex_post_hole_digger_handle_bolt.jpg|100px]]
+
| [[Image:Lead_Screw_Nut_Bushing.jpg|100px]]
|-
|-
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| T 6061 Aluminum
| T 6061 Aluminum
| Extrusion
| Extrusion
-
| [[Image:Complex_post_hole_digger_fender_washer.jpg|100px]]
+
| [[Image:Shovel_Link_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| Upset forging
| Upset forging
-
| [[Image:Complex_post_hole_digger_connecting_bolt.jpg|100px]]
+
| [[Image:Shovel_Pivot_Bolt_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| Upset forging
| Upset forging
-
| [[Image:Complex_post_hole_digger_connecting_bolt.jpg|100px]]
+
| [[Image:Shovel_Link_Bolt_PHD.jpg|100px]]
|-
|-
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| Steel
| Steel
| Upset forging
| Upset forging
-
| [[Image:Complex_post_hole_digger_connecting_bolt.jpg|100px]]
+
| [[Image:Central_Rod_Bolt_PHD.jpg|100px]]
|-
|-
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| Plastic (PTFE)
| Plastic (PTFE)
| Injection molding
| Injection molding
-
| [[Image:Complex_post_hole_digger_bushing.jpg|100px]]
+
| [[Image:Link_Bushing_L_PHD.jpg|100px]]
|-
|-

Revision as of 20:00, 1 December 2008

List of Parts

Table *****: Individual Components of Redesigned 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 T 6061 Aluminum Extrusion
2 Central rod 1 NA oz Transmits rotational motion of lead screw into translational motion, forcing shovels closed T 6061 Aluminum Extrusion
3 Crank 1 NA oz Turned by user to close shovels T 6061 Aluminum Extrusion
4 Shovel 2 NA oz Contain dirt when digging Steel Stamping
5 Shaft handle 2 NA oz Provides gripping location for ground penetration strike and location for applying counteractive moment to shaft when turning crank to close shovels T 6061 Aluminum Extrusion
6 Shaft peg 4 NA oz Allow user to force tool into the ground using his/her foot T 6061 Aluminum Extrusion
7 Guide bushing 2 NA oz Constrains central rod to maintain linear motion within shaft T 6061 Aluminum Extrusion
8 Lead screw 1 NA oz Transmits rotation of crank into translation of central rod Steel Automated CNC lathe/threading machine
9 Lead screw nut 1 NA oz Constrains lead screw Brass Automated CNC milling
10 Lead screw nut bushing 1 NA oz Constrains lead screw nut and locates it within shaft T 6061 Aluminum Lathe???
11 Inline ball joint 1 NA oz Translates rotation of lead screw to translation of central rod and connects the two parts Steel  ???
12 Shovel link 2 NA oz Connects central rod to shovels T 6061 Aluminum Extrusion
13 Shovel pivot bolt 1 NA oz Joins center of the two shovels, allowing them to pivot about it as a central axis Steel Upset forging
14 Shovel link bolt 2 NA oz Joins each respective shovel to its shovel link Steel Upset forging
15 Central rod bolt 1 NA oz Joins central rod to the two shovel links as a loosely pinned connection Steel Upset forging
16 Link bushing L 2 NA oz Bushing for shovel link bolt to maintain correct spacing between shovel link and shovel in the large gap Plastic (PTFE) Injection molding
17 Link bushing S 2 NA oz Bushing for shovel link bolt to maintain correct spacing between shovel link and shovel in the small gap Plastic (PTFE) Injection molding
18 1/4" Nylon Lock Nut 3 NA oz Nut for both shovel link bolts and the central rod bolt Steel Upset forging
19 5/16" Nylon Lock Nut 1 NA oz Nut for shovel pivot bolt Steel Upset forging
Retrieved from "https://wiki.ece.cmu.edu/ddl/index.php/Lead-screw_post_hole_digger"
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