Machine Shop Productions

Manufacturing in Motion

Team members Jose and Ryan with their work of art.

This week, manufacturing for several components were started:

• Digger brake
• drilling of digger plate
• Spindle
• material was cut
• Mounting bracket
• drilled
• mounted (as shown in picture)

To be done:

Tap upright and thread front axle to have spindle ready for welding.

Receive remaining material and begin prep work for welding.

Steering design Completed

Steering for the cart has been completed, allowing integration of the rest of the cart's components to be possible.

To-do:
Use the updated bill of materials to purchase materials for:

• Steering 
• Suspension
• Top frame

Spindle Static Analysis

Static Analysis of 500 lbs

Static Analysis of 600 lbs

Static Analysis of 700 lbs

Moving forward

This week was very informative as we conducted analysis on our spindle/axel set up. Further test will be done to confirm our results.

As we move forward, completion of the rear wheel assembly is needed in order to finish welding the base of our frame. 

Below is an image of a new bracket needed to complete this design.

Updated Gantt Chart

Welding Setback

This week, the team was set back on welding due to design. A few of the cart's components must be redesigned in order to continue welding:

• spindle
• suspension arms (possibly)
• reinforcement of front wheel (new design)

To-do:

Finalize design for mentioned components and run through our machinists (Mike and Joe) in order to proceed with welding.

Lauren the Machinist

Today, we have a special entry, as our team member Lauren learns how to use a mill.

 

Frame Material Purchased

With a completed cut plan, material(Aluminum 6061-T6) was ordered and cutting began almost immediately.

To do:
Prepare the aluminum by Wednesday and begin welding late this week, possibly Monday (10/14/13)

Bottom Frame Static Analysis

 

With the bottom frame finalized, static analysis was done to simulate a pulling force of 500 pounds.

The analysis produced the following results.

 

 

To do:

Further analysis will be on suspension

Create caliper mounting bracket if needed.

Buy material to begin welding frame.

Spindle Assembly

With the purchase of the disc brakes and calipers, the team encountered problems with the caliper's mounting bracket. A solution was proposed that would allow the mounting bracket to be attached to the entire frame via the designed spindle assembly.

Top Frame Of Cart On The Design Table

The team brainstormed a lot about the top of the frame. Things concerning the top frame that were discussed were:

• collapsible vs. detachable
• drill patterns
• overall design. 

To-do in the coming week.

• Talk to our school machinist (Mike and Joe) about a machining plan and where to buy material. 
• New bearings needed for the wheels and the top of the frame. 

Updated A-arm Set

The Buying Process Begins!

The weekend was very productive with several critical purchases being made. The items purchased were all four wheels/tires and brake assembly. A final base frame will be designed with the following dimensions in consideration.

• Diameter of wheels ~18 in
• Width of wheels with brake assembly ~ 4 in (2.94in wheels only)
• Axel diameter - 15mm

The top portion of the frame is also in the design process with generic lengths (will change with the final dimensions of the base). See below

In the week to come, the team will research the cost of material needed for the entire frame based on our design. 

Solid Model of A-Arms

CAD designs and drawings have been made for the A-arms. (subject to change with the addition of final dimensions)

Updated Gantt Chart

Click here to view Gantt Chart.

Updated PDS

Critical decisions

This week the team made a few critical decisions. With an updated gantt chart, the team realized they're were behind schedule therefore the following decisions were made.

1. Round tuning was thrown out and square tubing was chosen
   
   1.5 x 2 inch
2. Created a buying list for the following items:

• Wheels
• Brakes
• Tires
• Shock absorber
• Tie-rods

For the coming week, the teams plans to have items on the buying list on order by no later than Monday (Sept 16, 2013)

First Meeting of the 2nd Semester

The team met to discuss future plans on the mushing cart's construction as well as revisited the work that was done before the summer. With each individual teammate having a different schedule during the summer, a lot of scheduled items were pushed back. Therefore the team brought up topics that needed to be completed in order to get the building process in motion.

The team decided focus on the items that need to be purchased. A few items that will be purchased are:

• Wheels & Tires*

• Disc Brakes*

• Shock Absorbers*

*Items pictured may not be used in the final product.

Action Items

	Action Items: Entire Project		5/5/2013
	Task	Status	Lead
Sketch
	dimensions configured	DONE	all
	components chosen	DONE	all
	research	NA	all
Model (Solid Works)
	brake system	21-Jun	Ashley
	shock system	21-Jun	Jose
	steering system	21-Jun	Ryan
	frame	21-Jun	Lauren, Rochelle
	entire assembly	28-Jun
Analysis
	tubing	14-Jun	Lauren, Rochelle
	frame	21-Jun	Lauren, Rochelle
	entire assembly	28-Jun
Budget
	configure budget	DONE	all
generate parts list
	brake system	12-Jul	Ashley
	shock system	12-Jul	Jose
	steering system	12-Jul	Ryan
	frame	12-Jul	Lauren, Rochelle
get quotes for material
	brake system	26-Jul	Ashley
	shock system	26-Jul	Jose
	steering system	26-Jul	Ryan
	frame	26-Jul	Lauren, Rochelle
	fundraisers	TBD	all
	distribute funds	2-Aug
	generate Pos	16-Aug
Buy All Needed Parts
	brake system	30-Aug	Ashley
	shock system	30-Aug	Jose
	steering system	30-Aug	Ryan
	frame	30-Aug	Lauren, Rochelle
Assembly
Frame
	generate a machining plan	30-Aug
	machine all necessary parts	4-Oct
	Weld all necessary components	1-Nov
Steering
	machine all necessary parts	4-Oct
	assemble components	1-Nov
	integrate into final assembly	22-Nov
Brake System
	machine all necessary parts	4-Oct
	Assemble components	1-Nov
	Integrate into final assembly	22-Nov
Shock System
	machine all necessary parts	4-Oct
	assemble components	1-Nov
	integrate into final assembly	22-Nov
Final Assembly
	integrate all components together	22-Nov
	integrate collapsibility	22-Nov
	check for safety measures	22-Nov
Assembly Testing and Analysis
	define testing procedures	22-Nov
	run tests	6-Dec
	analyze test results	13-Dec
Final Report
	generate report	20-Dec	Rochelle
	generate presentation	20-Dec	Rochelle