Revision as of 17:46, 3 June 2019

2" Axis

From the BOM, we have -

Axes - 32' total (8 rods of 3', 4 rods of 2' for z) - $640
Frame - ~~1/2"x6"x6" angle -$20/ft; 4x4x1/2 tube - $30/ft - 36 ' - $720 or $1080~~. Use flts to make 6-sided space frame per OSE industry standards
Oil-impregnated 2" bushing - 8000 lb+ lateral force capacity- $9.41 - [1]. $240. 24 needed, 18 minimum. 2" is huge and weighs about 1 lb each if naval bronze acc to Metal Weight Calculator.
Belts - see GT2_Belts#Belt_Drive_Cost - $12/foot x6 = under $100.
Motors - 6 Geared Down Stepper Motors at $30 each -

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 =2" Axis=
+From the BOM, we have -
+=BOM=
+*Axes - 32' total (8 rods of 3', 4 rods of 2' for z) - $640
+*Frame - <strike>1/2"x6"x6" angle -$20/ft; 4x4x1/2 tube - $30/ft - 36 ' - $720 or $1080</strike>. Use flts to make 6-sided space frame per OSE industry standards
+*Oil-impregnated 2" bushing - 8000 lb+ lateral force capacity- $9.41 - [https://www.mcmaster.com/#6391k465/=19bdsz1]. $240. 24 needed, 18 minimum. 2" is huge and weighs about 1 lb each if naval bronze acc to [[Metal Weight Calculator]].
+*Belts - see [[GT2_Belts#Belt_Drive_Cost]] - $12/foot x6 = under $100.
+*Motors - 6 [[Geared Down Stepper Motors]] at $30 each -
+==Precision Drive==
+*3D printed belt for low cost precision - needs development
+*Multiple 15 mm [[GT2 Belts]]
+*$25/meter for ball screw only -
+*1" ball screw set - $200/2 meter with complete set - [http://www.vxb.com/Ballscrews-s/369.htm?searching=Y&sort=13&cat=369&search=25+mm%2025MM&show=15&page=1]
+:*'''$25/foot'''
+*.6" ball screw complete set, 2 foot travel - $50/foot
+*$5/foot for 1" acme screw - [https://www.ebay.com/itm/304070-1-5-x-72-inch-6-foot-1-start-Acme-threaded-rod-for-lead-screw-CNC/131883587821?epid=705605541&hash=item1eb4dfd8ed:g:iIEAAMXQl99Q6JWl]
 ==Links==
 *[[2 Inch Universal Axis]]
+*[[2" Universal Axis#Design]]
 =1" Axis=