Over Heating
Moderators: al wolford, sbk, Bob, Kayvon
Over Heating
I have a CNC Shark HD and was wondering if any of you ever have any concerns about the machine overheating when doing a project that takes 3 or more hours? Mine seems to get hot but I have not have any problems yet.
Re: Over Heating
I have done 13 hour cuts never had a problem. Motors and controller get hot no mater outside temp. If it is 95 or above I just use a box fan and blow on machine.
Re: Over Heating
Kevin - Thanks for the reply. I haven't had any problems, but was worried because the motor seems to get pretty hot. I guess if you can do a 13 hour project, I shouldn't have to worry about a 3 - 4 hour project.
Re: Over Heating
First thing I found out after my first cut, the servo motors were very hot. In my world, heat kills. So I set up a water cooling system for the motors. I got water cooled heat sinks and clamped 2 on each motor. I have a water cooled spindle and did not want to use its pump for cooling. I got another pump and it runs just for the motor cooling. They never get warmer than room temp now. The motors may be able to take the heat but I did not want to chance it. I also make some long cuts. just nice knowing they are not cooking.
Re: Over Heating
Would you please post an address for your heat sink source, and which ones you used?
Thanks,
Bob
Thanks,
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)
Antonie Van Leeuwenhoek (Developer of the microscope.)
Re: Over Heating
I got them off EBAY. I used the router to drill and cut the 1/8" aluminum plates that clamp the heat sinks on each side of the motors and used #8 screws with nylon insert lock nuts to clamp them together. I did not use any heat sink paste. Just snug the screws enough to stay put and not damage the heat sinks. I used clear tubing and no clamps were needed on the push on fittings on the heat sinks. Pump is in a 5 gal bucket.
If I knew how to post a pic I would post photos.
This should be the same site.
http://www.ebay.com/itm/400763781920?_t ... 1336773249
If I knew how to post a pic I would post photos.
This should be the same site.
http://www.ebay.com/itm/400763781920?_t ... 1336773249
Re: Over Heating
Spy
I had the same problem worrying about heat in the stepper motors. My steppers were reaching 130 degrees plus at times so I did the following. I attached computer fan motors (4) so that they would force air across the surface of the motors. I have cut / carved several projects and my temps stay in the high 80 to mid 90 degrees. I have attached a photo should you need more info let me know. Sorry for not seeing this sooner, I hope this helps. The best part of this was the cost $0.00 dollars as I used salvaged parts.
Bob
I had the same problem worrying about heat in the stepper motors. My steppers were reaching 130 degrees plus at times so I did the following. I attached computer fan motors (4) so that they would force air across the surface of the motors. I have cut / carved several projects and my temps stay in the high 80 to mid 90 degrees. I have attached a photo should you need more info let me know. Sorry for not seeing this sooner, I hope this helps. The best part of this was the cost $0.00 dollars as I used salvaged parts.
Bob
Re: Over Heating
Bob
Thanks for the post.
What is the power source for the motors?
Bob
Thanks for the post.
What is the power source for the motors?
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)
Antonie Van Leeuwenhoek (Developer of the microscope.)
- NewAgent45
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- Location: Edgewater, Florida, USA
Re: Over Heating
Interesting! I have noticed hot stepper motors even on a cool day in Florida. I have been running the machine for over three years now even on hot days in Florida. Nothing but a fan in my shop. The good news is I haven't had any problems with the motors, controller or Dell XPS laptop I run the machine with. Guess I'm lucky. I agree heat could be an issue.
Thanks for posting the issue.
Have a great day!
..... Rod
Thanks for posting the issue.
Have a great day!
..... Rod
Re: Over Heating
I used a 12 volt 120 m amp power supply. I think it was from an old telephone unit for the house. It runs 4 computer fans with no problems. I may install a switch so that I can turn the fans off without having to shut off the power bar.
Pictures attached.
Bob