[Emc-users] Heat dissipation?
Hello! A client is asking me for a small machine that would burn their logo in wooden parts. They want to do it with a heated element that would be actuated by pneumatical cylinder. My only concern that I have not yet figured out is keeping down as much as possible the amount of heat transfered to the rod of pneumatic cylinder. I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. My current thought is to take a piece of thin-walled pipe and machine the wall in somewhat like a web (drill lots of holes or something similar). That would reduce the crossection of material and thus the amount of heat transfered to the rod of cylinder. I would like not to reinvent the wheel, so will appreciate any advices. Thanks in advance! -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
On 24 June 2013 18:40, Viesturs Lācis viesturs.la...@gmail.com wrote: I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. I have seen water-cooled blocks used for similar things. (maybe air-cooled makes more sense in this case). A lot of holes and end-plates is one way that it might be made. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
You could epoxy a piece of ceramic rod into two pieces of tube. One at both ends. One attached to the heated element and the other tube to the rod. On 2013/06/24 07:40 PM, Viesturs La-cis wrote: Hello! A client is asking me for a small machine that would burn their logo in wooden parts. They want to do it with a heated element that would be actuated by pneumatical cylinder. My only concern that I have not yet figured out is keeping down as much as possible the amount of heat transfered to the rod of pneumatic cylinder. I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. My current thought is to take a piece of thin-walled pipe and machine the wall in somewhat like a web (drill lots of holes or something similar). That would reduce the crossection of material and thus the amount of heat transfered to the rod of cylinder. I would like not to reinvent the wheel, so will appreciate any advices. Thanks in advance! -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130624-1, 2013/06/24 Tested on: 2013/06/24 07:54:53 PM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
possibility http://www.morganthermalceramics.com/products/ On Mon, Jun 24, 2013 at 12:54 PM, Marius Liebenberg mar...@mastercut.co.zawrote: You could epoxy a piece of ceramic rod into two pieces of tube. One at both ends. One attached to the heated element and the other tube to the rod. On 2013/06/24 07:40 PM, Viesturs La-cis wrote: Hello! A client is asking me for a small machine that would burn their logo in wooden parts. They want to do it with a heated element that would be actuated by pneumatical cylinder. My only concern that I have not yet figured out is keeping down as much as possible the amount of heat transfered to the rod of pneumatic cylinder. I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. My current thought is to take a piece of thin-walled pipe and machine the wall in somewhat like a web (drill lots of holes or something similar). That would reduce the crossection of material and thus the amount of heat transfered to the rod of cylinder. I would like not to reinvent the wheel, so will appreciate any advices. Thanks in advance! -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130624-1, 2013/06/24 Tested on: 2013/06/24 07:54:53 PM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
i googled automatic branding irons, like for cattleone xmpl is: http://www.durable-tech.com/marking/branding-irons/semi-automated- branding-iron/ www.youtube.com/watch?v=qCRae5mRoRE Head em up (move em up) Move em on (head em up) Rawhide tjtr33 tomp -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
On 24 June 2013 18:40, Viesturs Lācis viesturs.la...@gmail.com wrote: I would like not to reinvent the wheel, so will appreciate any advices. I think the search term would be thermal break though that is mainly finding me structural things like: http://www.farrat.com/tbn100-47.html -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
On 06/24/2013 12:47 PM, andy pugh wrote: On 24 June 2013 18:40, Viesturs Lācis viesturs.la...@gmail.com wrote: I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. I have seen water-cooled blocks used for similar things. (maybe air-cooled makes more sense in this case). A lot of holes and end-plates is one way that it might be made. old school heavy chisel point soldering iron, the handle you held onto doenst get hot so the heat dissapation is handled. like this http://tooltronic.com/products/soldering-industrial/hexacon-p300-300watt-heavy-duty-soldering-iron/ the tip could be removed ( single set screw thru side ) and a new 'tip' which is a copper Tee ( shank goes into soldering iron, perpendicular end has logo on face ) custom branding ends here: http://goo.gl/mrFYI Your automation can hold the handle end ( no heat ) the front is the branding logo. FWIW tjtr33 -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
I agree with the thin-walled tube approach. Use stainless steel. Stainless conducts 1/3 as much heat as regular steel, and 1/10 as much as aluminum. There is a table of thermal conductivities at http://www.engineersedge.com/properties_of_metals.htm There are a few materials in that list that are even lower, than stainless, but probably much harder to obtain. A lot will depend on the available space. The heat transfer is proportional to diameter times wall thickness divided by length. So you want as thin-walled as possible without buckling, just large enough diameter to handle the mechanical load, and as long possible in the available space. I would avoid putting holes in it - instead I would go for the thinnest wall I could get that can handle the required forces. Holes would just make it weaker and thus you would have to use thicker material to make up the difference. For attachment to a thin walled tube, press a lathe turned plug into it. That avoids stress concentrations from holes or other machined features, and so you don't have to oversize the tube. You want it to be just strong enough to do the job - extra metal just means more heat transfer. McMaster Carr won't be very useful in Europe, but it does give a feel for what is readily available. They have alloy 304 and 316 stainless tube with a 0.02 (0.508mm) wall in diameters up to 5/8 (15.9mm) and alloy 321 up to 2 (50.8mm). For example, part number 6622K15. Actually, you could do even better with several small tubes. Suppose the stamping tool is a 1 x 2 rectangle. You could use a 1 diameter x 0.020 wall tube, with a cross section of 0.0628 square inches. Or, you could also use four smaller tubes at the corners. McMaster sells part number 6100K221, which is 304 stainless, 1/4 diameter tube with a wall thickness of only 0.005. That reduces the cross sectional area to 0.00397 square inches per tube, 0.0157 square inches total. On Mon, Jun 24, 2013, at 01:40 PM, Viesturs Lācis wrote: Hello! A client is asking me for a small machine that would burn their logo in wooden parts. They want to do it with a heated element that would be actuated by pneumatical cylinder. My only concern that I have not yet figured out is keeping down as much as possible the amount of heat transfered to the rod of pneumatic cylinder. I would like to ask, if somebody has ever done something similar and could share some tips about best practices how to attach that heated stencil to pneumatic cylinder. My current thought is to take a piece of thin-walled pipe and machine the wall in somewhat like a web (drill lots of holes or something similar). That would reduce the crossection of material and thus the amount of heat transfered to the rod of cylinder. I would like not to reinvent the wheel, so will appreciate any advices. Thanks in advance! -- Viesturs -- John Kasunich jmkasun...@fastmail.fm -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
Certain compounds are but not all. You want a very porous one. You will get heat transfer but not a lot and it depends on how long you make the rod. Very hard compound will conduct a lot of heat. On 2013/06/24 08:17 PM, Viesturs La-cis wrote: 2013/6/24 Marius Liebenberg mar...@mastercut.co.za You could epoxy a piece of ceramic rod into two pieces of tube. One at both ends. One attached to the heated element and the other tube to the rod. Do I understand correctly that the idea is that ceramics are bad at heat conductivity? -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130624-1, 2013/06/24 Tested on: 2013/06/24 08:53:50 PM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Heat dissipation?
On 2013/06/24 07:40 PM, Viesturs La-cis wrote: Hello! A client is asking me for a small machine that would burn their logo in wooden parts. They want to do it with a heated element that would be actuated by pneumatical cylinder. In other words they want a small, electrically heated, branding iron on the end of a pneumatic cylinder. Keep it simple with an insulator made of PEEK. Should be strong enough to mount the heated part. A finned heat sink on the back of the heated part, with a solid boss in the center for the mounting, and a small fan blowing across the heat sink when retracted, should keep the heat from going to the cylinder. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
