Group 36 - Ryobi Contractor's Saw

Executive Summary

This section is much like an abstract and summarizes the entire report

Introduction

This section should include an introduction of the product and a brief description of group members (i.e. who was responsible for which sections or tasks)

Before Disassembly Section

This circular saw is primarily used for cutting wood. It runs on an AC current, and contains a 2.3 hp motor, turning electrical energy into mechanical energy. At the beginning of the project, it was new, so the group assumed that its initial operation was correct. The saw is operated by engaging a safety switch, and then a power switch. It was very loud, and even without the torque of the blade, kicked back when it was initially operated. This demonstrated the physical power of the motor. The group estimated that the saw would contain about 40 components, and predicted that those components would be made of plastic, steel, aluminum and copper.

Disassembly Procedure

• Document each step to disassemble the product
• How difficult was each disassembly step?
• What types of tools were required to perform this step?
• Include a picture of each disassembly step

After Disassembly

Component List

Part #	Component Name	Number of Parts of This Type	Material(s)	Manufacturing Process	Image
1	Motor Housing	1	Plastic, Brass, Galvanized Steel	Injection Molded, Die Cast and Machined, Stamped	PUT PICTURE HERE
2	Stator	1	Plastic, Copper, Magnetic Alloy	Injection Molded, Extruded, Stamped and Soldered	PUT PICTURE HERE
3	Trigger and Safety Switch	1	Plastic, Aluminum	Injection Molded, Extruded and Machined	PUT PICTURE HERE
4	Power Cord	1	Copper, Plastic	Both Extruded	PUT PICTURE HERE
5	Upper Guard	1	Aluminum, Brass	Die Cast and Machined, Machined	PUT PICTURE HERE
6	Reduction Gear	1	Steel	Extruded and Machined. Also dipped in an anti-corrosion coating.	PUT PICTURE HERE
7	Central Washer	2	Steel	Die Cast	PUT PICTURE HERE
8	Depth Adjustment Lever	1	Plastic	Injection Molded	PUT PICTURE HERE
9	Rubber Stopper	1	Rubber	Injection Molded and Vulcanized	PUT PICTURE HERE
10	Handle	2	Plastic	Injection Molded	PUT PICTURE HERE
11	Rotor	1	Steel, Copper, Plastic	Stamped, Extruded and Machined, Extruded, and Injection Molded	PUT PICTURE HERE
12	Vent Cover	1	Plastic	Injection Molded	PUT PICTURE HERE
13	Lower Guard	1	Aluminum	Die Cast	PUT PICTURE HERE
14	Carbon Brush	2	Plastic, Copper, Carbon, Brass	Injection Molded, Extruded, Machined, Stamped	PUT PICTURE HERE
15	Lower Guard Lift Lever	1	Plastic	Injection Molded	PUT PICTURE HERE
16	Long Screw	6	Steel	Extruded and Machined	PUT PICTURE HERE
17	Medium Screws	8	Steel	Extruded and Machined	PUT PICTURE HERE
18	Short Screws	4	Steel	Extruded and Machined	PUT PICTURE HERE
19	Central Bolt	1	Steel	Extruded and Machined	PUT PICTURE HERE
20	Long Spring	1	Steel	Extruded	PUT PICTURE HERE
21	O-Spring	1	Steel	Extruded	PUT PICTURE HERE
21	C-Clip	1	Steel	Stamped	PUT PICTURE HERE
22	Large Gauge Screw	1	Steel	Extruded and Machined	PUT PICTURE HERE

• Part number
• Part name
• Number of parts of this type
• Part material
• Part manufacturing process
• Image of the part
• CAD file for selected parts

Assembly

• Document each step to reassemble the product
• How difficult was each assembly step?
• What types of tools were required to perform this step?

After Assembly

Upon reassembling the saw, the group successfully tested it. It ran almost exactly as it had before, but once the switch was disengaged, the motor continued to spin from its momentum. The group surmised that the broken copper wiring in the carbon brushes must have had something to do with the braking of the motor. This problem could be quite dangerous if the lower guard malfunctioned.

References

APA Style You must use this format (It's easier than MLA, so don't worry).

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