Fabricability Checklist - Revision history

Marcin: /* Lean Analysis */

2013-08-09T03:18:50Z

Lean Analysis

← Older revision		Revision as of 03:18, 9 August 2013
Line 5:		Line 5:
	:*Parts count minimization		:*Parts count minimization
	:*80% of function in 20% effort		:*80% of function in 20% effort
	*Perform Product Ecology Review		*Perform Product Ecology Review - efficiency occurs because parts and modules are interchangeable

	==Sourcing==		==Sourcing==
	*All metal should in stock sizes if possible. IE. use 1”x4” instead of 1”x3.75”. This makes it easier to obtain for fabricators. Check material availability at a local shop.		*All metal should in stock sizes if possible. IE. use 1”x4” instead of 1”x3.75”. This makes it easier to obtain for fabricators. Check material availability at a local shop.

Marcin: /* Parts Size */

2013-08-09T03:13:26Z

Parts Size

← Older revision		Revision as of 03:13, 9 August 2013
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	*Individual parts should be reasonably simple, and consist of very few welded items, so if any parts break they’re easy to fix.		*Individual parts should be reasonably simple, and consist of very few welded items, so if any parts break they’re easy to fix.
	*Are there any parts which are too big (>80 lbs, or awkward dimensions) for an average fabricator to easily handle? Can the size of these parts be reduced, without lowering function?		*Are there any parts which are too big (>80 lbs, or awkward dimensions) for an average fabricator to easily handle? Can the size of these parts be reduced, without lowering function?

			==Geometry and Parts Fit==
			*Are there bolts that can not be put in because of spatial conflicts?
			*Will cylinders fit throughout their full range of motion?
			*Will hoses or wires get stretched or broken if parts motion is involved?

	=Metals=		=Metals=
	==Welds==		==Welds==

Marcin: /* Hole sizing and placement */

2013-08-09T03:10:18Z

Hole sizing and placement

← Older revision		Revision as of 03:10, 9 August 2013
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	:*Torch:		:*Torch:
	::*Will torch be precise enough? Or will further machining ( such as reaming or boring) be necessary?		::*Will torch be precise enough? Or will further machining ( such as reaming or boring) be necessary?
	:*Machining		==Machining==
	::*Is all machining necessary, or can precision be achieved thru other methods (IE match drilling)?		*Is all machining necessary, or can precision be achieved thru other methods (IE match drilling)?
	::*What is the expected amount of time reqiured for machining?		*What is the expected amount of time reqiured for machining?

	==Precision==		==Precision==
	*How will necessary precision (for things like shafting) be achieved? Is it possible?		*How will necessary precision (for things like shafting) be achieved? Is it possible?
	*What is the alignment procedure for achieving desired precision?		*What is the alignment procedure for achieving desired precision?
	*What is the estimated precision that will be achieved?		*What is the estimated precision that will be achieved?

Marcin: Created page with "This step should happen prior to the build. =General= ==Lean Analysis== Justice technique :Parts count minimization :80% of function in 20% effort Perform Product Ecology ..."

2013-08-09T03:09:40Z

Created page with "This step should happen prior to the build. =General= ==Lean Analysis== *Justice technique :*Parts count minimization :*80% of function in 20% effort *Perform Product Ecology ..."

New page

This step should happen prior to the build.
=General=
==Lean Analysis==
*Justice technique
:*Parts count minimization
:*80% of function in 20% effort
*Perform Product Ecology Review
==Sourcing==
*All metal should in stock sizes if possible. IE. use 1”x4” instead of 1”x3.75”. This makes it easier to obtain for fabricators. Check material availability at a local shop.
*All metal should be common alloys if possible.
:*Steel: A-36, 4130 Chromoly, 1018...
:*Aluminum: 6061, 3003
*Materials should be accessible through common suppliers (McMaster Carr, Surplus Center, Grainger)
==Parts Size==
*Individual parts should be reasonably simple, and consist of very few welded items, so if any parts break they’re easy to fix.
*Are there any parts which are too big (>80 lbs, or awkward dimensions) for an average fabricator to easily handle? Can the size of these parts be reduced, without lowering function?
=Metals=
==Welds==
*Are all welds accessible to the welder?
*Is the weld % correct?
*Will welds cause warping? Will this cause issues?
*Are all welds necessary?
*Will welds adversely affect hardness?
==Torching==
*Will torching adversely affect hardness?
*Will torching warp the metal?

==Hole sizing and placement==
*Tolerance all holes to be drilled, to insure there won’t be interferences. Factors include:
:*human error ( usually 1/32” - 1/16”)
:*Equipment error (depends on method of making holes- torching (>1/16”), Drilling (not much)
*Are all holes accessible to drill or torch?
*How will holes over 1” Diameter be made? Torch? Mag-Drill?
:*Mag-Drill:
::*Consider the cost of bits, and the possible drill depth of mag-drills.
::*If surface is recessed, will bit be able to reach?
::*Keep in mind that by drilling a center hole, you can magdrill 2x as thick material.
:*Torch:
::*Will torch be precise enough? Or will further machining ( such as reaming or boring) be necessary?
:*Machining
::*Is all machining necessary, or can precision be achieved thru other methods (IE match drilling)?
::*What is the expected amount of time reqiured for machining?
==Precision==
*How will necessary precision (for things like shafting) be achieved? Is it possible?
*What is the alignment procedure for achieving desired precision?
*What is the estimated precision that will be achieved?

Fabricability Checklist - Revision history

Marcin: /* Lean Analysis */

Marcin: /* Parts Size */

Marcin: /* Hole sizing and placement */

Marcin: Created page with "This step should happen prior to the build. =General= ==Lean Analysis== *Justice technique :*Parts count minimization :*80% of function in 20% effort *Perform Product Ecology ..."

Marcin: Created page with "This step should happen prior to the build. =General= ==Lean Analysis== Justice technique :Parts count minimization :80% of function in 20% effort Perform Product Ecology ..."