KraftTech Power Sander - Revision history

ChristopherShake at 15:37, 7 February 2008

2008-02-07T15:37:48Z

2008-02-07T15:11:01Z

2008-02-07T07:14:47Z

Links

2008-02-07T07:13:42Z

2008-02-07T07:12:44Z

2008-02-07T07:12:23Z

2008-02-07T07:11:21Z

2008-02-07T07:06:36Z

Details on Modeled Parts

2008-02-07T07:06:01Z

Details on Modeled Parts

2008-02-07T06:29:19Z

Details on Modeled Parts

← Older revision		Revision as of 15:37, 7 February 2008
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−	[~~http://gicl.cs.drexel.edu/wiki/~~Bucknell_Mechanical_Design ''Bucknell Mechanical Design'']	+	[[Bucknell_Mechanical_Design\|''Bucknell Mechanical Design'']]

@@ Line 125: / Line 125: @@
 | [[Image:legs.jpg|center|thumb|50px]]
 | [[Image:FlexLegsModel.jpg|center|thumb|50px]]
 |-
 ! 11

@@ Line 242: / Line 242: @@
 =Links=
-[[''Bucknell Mechanical Design'']]
+[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design ''Bucknell Mechanical Design'']
 [http://www.krafttechpowertools.com/products/product.aspx?ID=17 ''KraftTech Power Tools Website'']
 [[Media:palmsanderusermanualeng.pdf|Palm Sander User Manual]]

@@ Line 1: / Line 1: @@
-[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design 'Bucknell Mechanical Design']
+[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design ''Bucknell Mechanical Design'']
@@ Line 242: / Line 242: @@
 =Links=
-[[Bucknell Mechanical Design]]
+[[''Bucknell Mechanical Design'']]
 [http://www.krafttechpowertools.com/products/product.aspx?ID=17 ''KraftTech Power Tools Website'']
 [[Media:palmsanderusermanualeng.pdf|Palm Sander User Manual]]

← Older revision		Revision as of 07:12, 7 February 2008
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−	[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design ''Bucknell Mechanical Design'']	+	[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design 'Bucknell Mechanical Design']

← Older revision		Revision as of 07:11, 7 February 2008
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		+	[http://gicl.cs.drexel.edu/wiki/Bucknell_Mechanical_Design\| Bucknell Mechanical Design]
		+
		+
	[[Image:powersander.jpg\|right\|thumb\|300px\|Figure 1: KraftTech Power Sander]]		[[Image:powersander.jpg\|right\|thumb\|300px\|Figure 1: KraftTech Power Sander]]

@@ Line 232: / Line 232: @@
 | align="center"|What kind of loading do we expect to be on the component?
 | align="center"|This part ultimately receives the applied force and distributes it to the sanding pad.  There are two sets of the flexible legs, totaling four contact points to transfer the load primarily along the axis of the legs' cylinders.  The motion of the sander along the surface also creates a lateral force, though of a lesser value.  In addition, these ABS plastic legs must be capable of adequately supporting the sanding pad while undergoing the constant vibration.
 ! 4
 | align="center"|What measures can we use to evaluate performance?

@@ Line 231: / Line 231: @@
 ! 3
 | align="center"|What kind of loading do we expect to be on the component?
-| align="center"|info
+| align="center"|This part ultimately receives the applied force and distributes it to the sanding pad.  There are two sets of the flexible legs, totaling four contact points to transfer the load primarily along the axis of the legs' cylinders.  The motion of the sander along the surface also creates a lateral force, though of a lesser value.  In addition, these ABS plastic legs must be capable of adequately supporting the sanding pad while undergoing the constant vibration.
-|-
 ! 4
 | align="center"|What measures can we use to evaluate performance?
-| align="center"|info
+| align="center"|Due to the inexpensive nature of the flexible legs, it is worthwhile to experimentally test the strength of the legs under "normal" conditions, assisting in measuring the device's probable lifetime.  Due to a variance in the user base and thus the user's applied force, a maximum downward force can be applied to acquire the yield strength.  The balance of strength, rigidity, and vibrational dampening could also be measured by analyzing the change in vibration between the surface and the user's hand.  In all, a failed or collapsed leg would reflect failure and poor performance of the flexible legs.
 |}

@@ Line 223: / Line 223: @@
 ! 1
 | align="center"|What Decisions were made in the design of this component/module?
-| align="center"|info
+| align="center"|Due to the nature of the legs and their function within the sander, the strength of the material and rigidity of the design were primary decisions for the design.  The weight and cost of the material entered the decision-making process because of the sander's purpose and desired cost.
 |-
 ! 2
 | align="center"|What are the critical features and dimensions?
-| align="center"|info
+| align="center"|The size of the "legs" is ultimately constrained to the requirement that the device fit in one hand.  The most critical features of the legs is that each can withstand the continuous vibration, the stress due to the force applied through the tool against the surface, and the balance between structural support and stability, and its allowance and absorption of small movement and vibration.  The legs are required to meet dimensional specification such that they are the appropriate length to attach the sanding platform to the device and are the correct width to allow for proper fitting within the plastic casing of the sander.
 |-
 ! 3