Progress Update

This post will provide the process up to now.

From MS6, we have come to conclusion to the final changes of the robot design. With these final decisions made, we produced engineering drawings, bills of materials/parts and step by step manufacturing plan for each part.

Bills of Materials:

#	Description	Use	Dimensions	Supplier	Part #
1	Aluminum plate, 1/4" thick	Linkages & Head Scoop	Excess	Kit
2	Angle Irons	Front Lip, connectors	1'' square, 1/8'' thick	http://www.mcmaster.com/#steel/=9l4n5n	8968K32
3	Flanged Sleeve Bushings	Linkage joints	1/4'' long, 3/8'' ID	http://www.mcmaster.com/#sleeve-bearings/=9l4ltm	6627K11
4	Coil Spring Pins	Linkage joints	3/4'' long, 3/8'' dia.	http://www.mcmaster.com/#pins/=9l4ldh	91598A354
5	1/4-20 Hex Bolts	Attaching angle iron	3/4'' long, 3/16'' hex	http://www.mcmaster.com/#socket-cap-screws/=9l4h9h	91251A540
6	1/4-20 Locknuts	Attaching angle iron	5/16'' height	http://www.mcmaster.com/#hex-locknuts/=9l4hue	90630A110

Step by Step Manufacturing plan:

Step	Description	Part	Machine	Parameters	References
1	Prepare CAD for waterjet (reduce hole diameters)	Linkage bars, front plate	CAD / Waterjet computer	Proper hole size reduction	Students / faculty in the lab
2	Cut out linkages	Linkage bars, front plate	Waterjet	Pressure, feed rate	Waterjet computer program
3	Drill out holes in linkage bars to proper diameter	Linkage bars, front plate	Drill press	Drill speed	Machinery handbook
4	Cut angle iron to length	Angle iron	Band saw	Speed	Handbook
5	File / finish edges	Linkage bars, front plate, angle iron	Remur, file, other finishing tools	Type of file	Bob Coury
6	Mark and centerpunch holes in angle iron	Lip of front plate, its connection to linkage	Hammer, centerpunch	Tolerance of placement	Calipers
7	Drill holes in angle iron	Lip of front plate, its connection to linkage	Drill press	Drill speed	Machinery handbook
8	Attach lip to front plate	Lip of front plate, nuts and bolts	Hex driver	How hard to tighten	Judgment call
9	Attach front plate to linkage rail	Angle iron connector, nuts n bolts	Hex driver	Tightness	Judgment
10	Fit bushings into linkage hole joints	Linkage bars	Vice if necessary	Fit	Judgment
11	Grease pins and bushings	Pins and bushings	Grease	Amount of grease	Bob Coury
12	Attach linkage arms to rail with pins	Linkage
13	Paint front plate	Front plate	Paintbrush and sheer fire	Terror factor	Fear induced

With the approved documents especially the engineering drawings, manufacturing is done. Manufacturing starts with water-jetting the stock to obtain the design of parts and later on, they are being processed in the machine shop. Here, sharp edges of the parts are filed down and the sides are smoothen with rough and fine sand papers.

Final products are shown below with engineering drawings:

 Head Scoop

Rotating Arm

Linkages

For MS7, each of the parts are submitted to GSI Davor for quality check.