Group 16 - DeWalt 4 1/2 in Angle Grinder Gate 1 - Revision history

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:32:05Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:31:33Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:21:54Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:20:16Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:19:58Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:18:18Z

Energy Profile

MAE 277 2012 - Group 16: /* Energy Profile */

2012-12-13T23:17:07Z

Energy Profile

MAE 277 2012 - Group 16: /* Alternative Product Profile */

2012-12-09T23:37:46Z

Alternative Product Profile

MAE 277 2012 - Group 16: /* Maintenance */

2012-12-09T22:30:48Z

Maintenance

MAE 277 2012 - Group 16: /* Maintenance */

2012-12-09T22:30:32Z

Maintenance

@@ Line 215: / Line 215: @@
 (All information for this section taken from Thefamilyhandyman.com)
-[[File:functional model gate 5.jpg|700px|thumb|center|'''Figure 2''': Energy Profile]]
+[[File:functional model gate 5.jpg|700px|thumb|center|'''Figure 2:''' Energy Profile]]
 ==Complexity Profile==

← Older revision		Revision as of 23:31, 13 December 2012
Line 215:		Line 215:

	(All information for this section taken from Thefamilyhandyman.com)		(All information for this section taken from Thefamilyhandyman.com)
		+	[[File:functional model gate 5.jpg\|700px\|thumb\|center\|'''Figure 2''': Energy Profile]]

	==Complexity Profile==		==Complexity Profile==

@@ Line 213: / Line 213: @@
 ==Energy Profile==
 The product uses AC electrical energy and rotational kinetic energy, which changes direction at the grinder head. Electricity is the only energy imported into the system, which is done by connecting the plug to any standard U.S. AC outlet. The electrical energy imported into the system is then transformed into rotational kinetic energy by an AC motor in the bottom of the tool. This motor drives the main shaft which in turn rotates a gear. This gear redirects the rotational kinetic energy by turning the axis of rotation 90º at the head of the grinder, which in turn delivers its rotational kinetic energy to the grinder’s disk and the object the tool is being used on. This flow of energy is summarized below in Figure 2.
 (All information for this section taken from Thefamilyhandyman.com)
 ==Complexity Profile==

@@ Line 212: / Line 212: @@
 ==Energy Profile==
 The product uses AC electrical energy and rotational kinetic energy, which changes direction at the grinder head. Electricity is the only energy imported into the system, which is done by connecting the plug to any standard U.S. AC outlet. The electrical energy imported into the system is then transformed into rotational kinetic energy by an AC motor in the bottom of the tool. This motor drives the main shaft which in turn rotates a gear. This gear redirects the rotational kinetic energy by turning the axis of rotation 90º at the head of the grinder, which in turn delivers its rotational kinetic energy to the grinder’s disk and the object the tool is being used on. This flow of energy is summarized below in Figure 2.
 (All information for this section taken from Thefamilyhandyman.com)

@@ Line 212: / Line 212: @@
 ==Energy Profile==
-[[File:functional model gate 5.jpg|500px|thumb|right|Figure 2 Energy Profile]]
+[[File:functional model gate 5.jpg|500px|thumb|center|'''Figure 2''': Energy Profile]]
-The product uses AC electrical energy and rotational kinetic energy, which changes direction at the grinder head. Electricity is the only energy imported into the system, which is done by connecting the plug to any standard U.S. AC outlet. The electrical energy imported into the system is then transformed into rotational kinetic energy by an AC motor in the bottom of the tool. This motor drives the main shaft which in turn rotates a gear. This gear redirects the rotational kinetic energy by turning the axis of rotation 90º at the head of the grinder, which in turn delivers its rotational kinetic energy to the grinder’s disk and the object the tool is being used on. This flow of energy is summarized in Figure 2 at right.
+The product uses AC electrical energy and rotational kinetic energy, which changes direction at the grinder head. Electricity is the only energy imported into the system, which is done by connecting the plug to any standard U.S. AC outlet. The electrical energy imported into the system is then transformed into rotational kinetic energy by an AC motor in the bottom of the tool. This motor drives the main shaft which in turn rotates a gear. This gear redirects the rotational kinetic energy by turning the axis of rotation 90º at the head of the grinder, which in turn delivers its rotational kinetic energy to the grinder’s disk and the object the tool is being used on. This flow of energy is summarized below in Figure 2.
 (All information for this section taken from Thefamilyhandyman.com)
 ==Complexity Profile==

@@ Line 340: / Line 340: @@
 ==Alternative Product Profile==
+When comparing our angle grinder to alternative products that could perform the same jobs we considered several categories that were important to the overall ease of use and effectiveness of each product. In Table 4 our group provides a comparison of the DeWalt 4 1/2 in angle grinder and two other angle grinders that are about the same price and size.
-''What product alternatives exist?''
-−
-====Alternative 1: Milwaukee 11 Amp 5 in AC small angle Grinder with Trigger Grip====
-''What are the advantages?''
+<table border=1>
-•	5 years limited warranty, comparing to DeWalt's 3 year limited warranty
+As can be seen from Table 4, the DeWalt Angle Grinder is very average in terms of cost, power, and durability. However, it is the lightest of the angle grinders considered by a significant margin. This would be one of the major qualities to consider during dissection because our product most likely contains a high amount of plastic where other grinders would use heavier metals.
-−
-•	Variable speed available
-−
-•	Bigger size of wheel: 5 in comparing to 4.5 in
-−
-•	CSA listed ( meaning product complies with national and international standards)
-−
-•	1400 MWO motor that powers through tougher jobs
-−
-''What are the disadvantages?''
-−
-•	It is heavier than DeWalt (6.88lb and 4.6 lb)
-−
-•	Uses more electricity (11 A vs. 10 A)
-−
-•	10 dollars more expensive than DeWalt
-−
-''How does this alternative compare?''
-−
-•	Both with maximum speed of 11000 rpm
-−
-•	Both are 90 days returnable
-−
-•	Both have an AC motor designed for maximum performance
-−
-•	The DeWalt uses less electricity during operation
-−
-•	The DeWalt does not have as much power as the Milwaukee
-−
-•	The DeWalt does not allow for speed adjustments
-−
-''What are the differences in the cost?''
-−
-•	DeWalt costs about $89, which is $10 cheaper than Milwaukee's angle grinder ($99).
-−
-====Alternative 2: Black & Decker G950 4-1/2-Inch Small Angle Grinder====
-−
-''What are the advantages of this product?''
-−
-•	3-position side extended handle and contoured body with rubber grip for added comfort and control in a variety of applications.
-−
-•	Metal gear case for added durability and extended life.
-−
-•	Trigger switch allows for ease of use, even when wearing gloves.
-−
-•	Spindle Size: 5/8 to 11 inches
-−
-•	Two year limited warranty
-−
-•	Spindle lock which provides easy accessory changes
-−
-•	Included with angle grinder: metal grinding wheel, spanner wrench, and side hand.
-−
-''What are the disadvantages of this product?''
-−
-•	2.4 lb heavier than DeWalts (DeWalt's 4.6 lb vs. 7.0 lb)
-−
-•	After sale service is one year less than DeWalt’s.
-−
-•	Limited warranty is one year less than DeWalt’s.
-−
-•	1,000 RPM less than DeWalt’s.
-−
-•	No Dust Ejection System.
-−
-•	No auto-off brushes system which avoid tool damage.
-−
-''Similarities of the products''
-−
-•	Both are 90 days returnable
-−
-•	Quick-Change system, allows tool free wheel removal without need for a wrench.
-−
-•	Equal Spindle Size ( 5/8 to 11 inches)
-−
-•	Side rubber handle for better control
 =References=

@@ Line 327: / Line 327: @@
 ===Maintenance===
-[[File:Brush_Maintenance.jpg|275px|thumb|right]]
+[[File:Brush_Maintenance.jpg|250px|thumb|right]]
 The primary form of maintenance the user will face is replacing the attachable heads, which is simply a matter of unscrewing the wheel nut, removing the old disk, putting the new one in, and replacing the wheel nut.