Cold Saw: Difference between revisions

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=Introduction=
=CAD=


Simply put, the Cold Saw cuts materials.
[[File:coldassy.jpg|500px]]


More specifically, the Cold Saw rotates a circular blade with sharp teeth to chip away at the material being cut.
See corresponding blog post for details - [https://www.opensourceecology.org/open-source-cold-saw-first-prototype-test/].


The Cold Saw is "cold" because most of the thermal energy generated during the cutting process is transferred to the chips that are cut off, instead of the blade or the remaining material. That said, the Cold Saw needs coolant to be consistently applied to the blade during operation.  
Download source CAD and supporting files: [[File:Coldsaw.zip]]. Note that all part files + overall assy are available, but only in Solidworks (old work prior to FreeCAD as OSE's standard). Useful work here would involve exporting files to FreeCAD readable STEP.


Different material compositions, shapes, dimensions all determine how fast the blade should spin (rotation speed) and how quickly the blade should move into the workpiece (feed rate). If the feed rate is too high, the blade is in danger of jamming and breaking. If the feed rate is too low, the blade's durability will not be maximized.
<html><iframe width="560" height="315" src="https://www.youtube.com/embed//oOjOKw84kAM" frameborder="0" allowfullscreen></iframe></html>


Cold Saw blades can be resharpened many times!
=Mechanical=
*[[Cold Foundation]]
*[[Cold Vise]]
*[[Cold Swivel Frame]]
*[[Cold Moving Arm]] (including Stopper,
*[[Cold Blade Mount]]
*[[Cold Blade Guard]]
*[http://www.mcmaster.com/#4190A22 Cold Saw Blade, 350mm (14") dia, 180 teeth, 32mm dia bore]


[[Image: ColdSawV1BasCpt.png|200px]]
=Motor Hydraulics=


=Latest Version: 1=
*[http://www.surpluscenter.com/item.asp?catname=&qty=1&item=9+7469 31.88 cu. in Hydraulic Motor from SurplusCenter]
*[http://www.surpluscenter.com/item.asp?item=928&catname=hydraulic 1/2" Quick Connect Pairs] x3
*[http://www.surpluscenter.com/item.asp?item=9-6314&catname=hydraulic 1/4" Quick Connect Pair] x1
*[http://www.surpluscenter.com/item.asp?item=916-1412&catname=hydraulic 1/4" NPTM x 1/4" NPTM Hose, 12" Long]
*[http://www.surpluscenter.com/item.asp?item=9-5404-8-8&catname=hydraulic 1/2" NPTM to 1/2" NPTM] x2
*[http://www.surpluscenter.com/item.asp?item=9-5406-8-4&catname=hydraulic 1/2" NPTM to 1/4" NPTF] x1
*[http://www.surpluscenter.com/item.asp?item=9-5605-8-8-8&catname=hydraulic 1/2" NPTF Tee] x1
*[http://www.surpluscenter.com/item.asp?item=9-6401-10-8&catname=hydraulic 1/2" NPTM to SAE10M] x2
*[http://www.surpluscenter.com/item.asp?item=9-6401-4-4&catname=hydraulic 1/4" NPTM to SAE4M] x1


=Index=
----


http://opensourceecology.org/wiki/Cold_Saw/Index
[[File: coldhydraulicreturn.jpg|200px]]
[[File: coldhydraulicreturn2.jpg|200px]]
[[File: coldhydraulicreturn.svg|200px]]


=Understand=
=Coolant Hydraulics=


http://opensourceecology.org/wiki/Cold_Saw/Understand
[http://www.amazon.com/Brushless-Submersible-Water-Ideal-cooling/dp/B0051HI3OM/ref=sr_1_1?s=industrial&ie=UTF8&qid=1354175640&sr=1-1&keywords=submersible+pump 3.6L/min Submersible Pump]


=Replicate=
[http://www.amazon.com/dp/B000FMWTRU/ref=biss_dp_t_asn Silicone Rubber Tube 1/4" ID, 1/2" OD]


http://opensourceecology.org/wiki/Cold_Saw/Build_Instructions
=Electronic=


=Use=
12V input suffices.


=Troubleshoot=
[[Infrared Distance Sensor Switch]]


=Temporary=
[[File: coldcoolelec.svg|200px]]


*There is only the need for understanding and replicating for new developers, with an index to ease navigation for experienced developers.
=Old=


http://opensourceecology.org/wiki/Cold_Saw/Build_Instructions/Fabricability_Review
[https://github.com/openspeed/Cold-Saw Cold Saw Github Repository]


http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale
[https://www.youtube.com/watch?v=oOjOKw84kAM&list=UUjvBN1r7UXXqmIbx_u7bIAw&index=50&feature=plpp_video Explainer Video on Youtube]


http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Files
[https://www.youtube.com/watch?v=gdZhqhhB9d4&list=UUjvBN1r7UXXqmIbx_u7bIAw&index=68&feature=plpp_video Test Cut 2 Video - blade did not loosen, but baseplate was not clamped to table so lots of vibration; fully smooth cut]
 
[https://www.youtube.com/watch?v=Bq7grqRt76o&list=UUjvBN1r7UXXqmIbx_u7bIAw&index=83&feature=plpp_video Test Cut 1 Video - blade retaining setscrews not tightened enough so blade loosened; cut halfway smooth]

Latest revision as of 23:24, 26 November 2020

CAD

Coldassy.jpg

See corresponding blog post for details - [1].

Download source CAD and supporting files: File:Coldsaw.zip. Note that all part files + overall assy are available, but only in Solidworks (old work prior to FreeCAD as OSE's standard). Useful work here would involve exporting files to FreeCAD readable STEP.

Mechanical

Motor Hydraulics

Coldhydraulicreturn.jpg Coldhydraulicreturn2.jpg Coldhydraulicreturn.svg

Coolant Hydraulics

3.6L/min Submersible Pump

Silicone Rubber Tube 1/4" ID, 1/2" OD

Electronic

12V input suffices.

Infrared Distance Sensor Switch

File:Coldcoolelec.svg

Old

Cold Saw Github Repository

Explainer Video on Youtube

Test Cut 2 Video - blade did not loosen, but baseplate was not clamped to table so lots of vibration; fully smooth cut

Test Cut 1 Video - blade retaining setscrews not tightened enough so blade loosened; cut halfway smooth

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