RC15DriveModule - Revision history

Cwehmeyer3 at 01:36, 14 June 2018

2018-06-14T01:36:09Z

Cwehmeyer3 at 01:35, 14 June 2018

2018-06-14T01:35:37Z

EJones at 00:53, 4 March 2015

2015-03-04T00:53:48Z

EJones: EJones moved page RC14DriveModule to RC15DriveModule

2015-03-04T00:52:17Z

EJones moved page RC14DriveModule to RC15DriveModule

EJones at 00:50, 4 March 2015

2015-03-04T00:50:28Z

EJones at 01:01, 22 December 2014

2014-12-22T01:01:32Z

EJones: EJones moved page RoboCup 2015 Drive Module to RC14DriveModule

2014-12-21T19:45:50Z

EJones moved page RoboCup 2015 Drive Module to RC14DriveModule

EJones: Created page with "The drive module consists of 3 integral components: 1) A drivetrain plate/mount 2) Motor 3) Omnidirectional wheel (omni wheel) == Background == The 2008 fleet of robots u..."

2014-12-18T16:35:06Z

Created page with "The drive module consists of 3 integral components: 1) A drivetrain plate/mount 2) Motor 3) Omnidirectional wheel (omni wheel) == Background == The 2008 fleet of robots u..."

New page

The drive module consists of 3 integral components:

1) A drivetrain plate/mount

2) Motor

3) Omnidirectional wheel (omni wheel)

== Background ==

The 2008 fleet of robots utilize a bull and pinion gear to transmit power to the omnidirectional wheels. Because of this arrangement

Pros:

Cons:

The 2011 fleet of robots utilize an internal ring gear and a spur gear to transmit power to the omnidirectional wheels. A standoff was also welded onto the drive module

Pros:

Cons:

== Requirements ==

== Prototypes ==

=== Rationale ===

=== Analysis/Performance ===

← Older revision		Revision as of 01:36, 14 June 2018
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	[[Category: 2014-2015]]		[[Category: 2014-2015]]
−	[[Category: ~~Robocup~~]]	+	[[Category: RoboCup]]

← Older revision		Revision as of 01:35, 14 June 2018
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	Prototype Notes:		Prototype Notes:
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		+	[[Category: 2014-2015]]
		+	[[Category: Robocup]]

← Older revision		Revision as of 00:53, 4 March 2015
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	Estimated shrink rate: 3.3%		Estimated shrink rate: 3.3%
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		+	Plastic Processing Information:
		+
		+	From http://www.tangram.co.uk/TI-Polymer-POM.html:
		+
		+	<font face="Arial">'''Injection moulding'''</font>
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		+	Pre-drying is not necessary but can be carried out at 110<font face="Arial" size="2"><sup>o</sup></font>C for 2 hours if the material has become moist or if the uniformity of the material needs to be improved<font face="Arial" size="2">.</font>
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		+	Injection pressures of 1200 to 1500 bar are used depending on the viscosity of the melt, the flow to wall thickness ratio and the type of sprue. Processing temperature is 180 to 220<font face="Arial" size="2"><sup>o</sup></font>C and up to 230<font face="Arial" size="2"><sup>o</sup></font>C in the event of deep flow and thin walls. The best processing temperature is around 205<font face="Arial" size="2"><sup>o</sup></font>C<font face="Arial" size="2">.</font> Thermal damage may occur above 230<font face="Arial" size="2"><sup>o</sup></font>C unless the residence time in the cylinder is kept short.
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		+	At a mould temperature of 120<font face="Arial" size="2"><sup>o</sup></font>C the mouldings are tougher and have greater rigidity and the general range is 50 to 120<font face="Arial" size="2"><sup>o</sup></font>C. The material is partially crystalline thermoplastics and the mechanical properties are determined by the degree of crystallisation which increases with the mould temperature. Mould tempering is important in the production of high surface quality parts with low distortion and care needs to be taken in this area. Mouldings produced at 90<font face="Arial" size="2"><sup>o</sup></font>C have less post-shrinkage than mouldings produced at lower temperatures<font face="Arial" size="2">. </font>Mould shrinkage is about 2% but is greatly dependent on the processing conditions. The glass fibre reinforced materials types have lower shrinkage but distortion can occur if the shrinkage is not uniform. Moulded parts with a high accuracy in gauge or parts used at high temperatures can be tempered for 24 hours at 110 to 140<font face="Arial" size="2"><sup>o</sup></font>C in order to allow for post-shrinkage.
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		+	As with all crystalline polymers the follow-up pressure can be influential on the shrinkage of the part and a longer hold time is preferred to reduce shrinkage.
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		+	High thermal stress during processing will result in the formation of formaldehyde.

	=== Rationale ===		=== Rationale ===

← Older revision		Revision as of 01:01, 22 December 2014
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	=== Analysis/Performance ===		=== Analysis/Performance ===
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		+	Prototype Notes:

← Older revision	Revision as of 00:52, 4 March 2015
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 == Prototypes ==
 === Rationale ===
 === Analysis/Performance ===
 Prototype Notes:

← Older revision	Revision as of 19:45, 21 December 2014
(No difference)