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Thread: Repairs to diy router
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3rd July 2019, 05:52 PM #1SENIOR MEMBER
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Repairs to diy router
Hi, thought i would document this repair in case someone might find it useful. I was asked to "fix" a guy's cnc router, he used it initially a lot when he bought it but it had issues.
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3rd July 2019 05:52 PM # ADSGoogle Adsense Advertisement
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3rd July 2019, 06:19 PM #2SENIOR MEMBER
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So i started on the electrical, they fitted the HY drive on the machine frame just in the open air. This for me is a big no no....these drives do not have an adequate ip rating. It was filled with saw dust. Also the cable from the drive to the motor was not a mains rated cable, they used a microphone screened cable similar to what jaycar sells....around 0.25mm sq on the 2.2 Kw water cooled spindle. The spindle motor was also not earthed, needless to say he had electrical noise issues.
I made up a new control panel, at this point we might add another drive for a rotary axis....so the panel layout will most likely change. Also the hy drive will most likely go and also the 2.2Kw water cooled spindle.
The G540 will stay, a additional drive will be required for the rotary axis. The new panel have passed the noise test, however it will be changed...
IMG20190617132121.jpgpaneltest6.jpg
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6th July 2019, 08:15 PM #3SENIOR MEMBER
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Even though the water cooled spindle is now earthed we decided not to use it anymore...
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6th July 2019, 08:20 PM #4SENIOR MEMBER
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Some work done on the mechanical. All the linear bearings will be replaced. The y axis only had on ball screw this one is worn and wil be replaced plus another on added. Motor bracket cut off and new brackets to be bolted on.
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6th July 2019, 09:14 PM #5
Great repair work there Erick. Thanks for posting and especially so with detailed pictures.
Mike.(1) Our small workshop layout __ (2) Bandsaw circle cutting jig __ (3) Spindle sander modifications __ (4) Dust Sensor
(5) Router table redesigned ____ (6) DC and where it all began __ (7) Bandsaw dust extraction build
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6th July 2019, 09:27 PM #6SENIOR MEMBER
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Thanks Mike. Budget is very limited so i can't do as much as i would like
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6th July 2019, 09:29 PM #7SENIOR MEMBER
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By posting these pic's i also wanted to show how easy it is to make a machine like this...
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6th July 2019, 10:25 PM #8GOLD MEMBER
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Thanks for the report and pics, Erick. Love the 4th axis lathe, what size chuck is that on there?
KrynTo grow old is mandatory, growing up is optional.
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6th July 2019, 10:38 PM #9SENIOR MEMBER
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10th July 2019, 08:23 PM #10SENIOR MEMBER
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Some parts arrived so i replaced y axis bearings...lined up the axis and started drilling holes to mount the new ball screws.
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16th July 2019, 05:52 PM #11SENIOR MEMBER
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17th July 2019, 06:29 PM #12SENIOR MEMBER
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25th July 2019, 01:36 AM #13SENIOR MEMBER
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So the y-axis is assembled and calibrated. When i moved on to the x-axis i found the mounting plate holes were not done properly. I did not plan to redo this plate but i really don't like the misalignment.
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25th July 2019, 11:22 AM #14GOLD MEMBER
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Eric, I have found that the mounting holes on the linear rail bearings that I have are not accurately positioned and vary quite a bit. There is a video somewhere on YT discussing the positioning and the holes being not central to the axis but off to one side. This is my first rodeo with this stuff and I was very surprised to see the differences in position and Mike found the same thing but did not realise why when he drilled the holes to attach plates/mounts to the bearing blocks he was way out with the holes not matching. I had to be careful and mark a "face side" and it was still a problem even doing that.
CHRIS
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25th July 2019, 02:31 PM #15SENIOR MEMBER
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