Messages

11

CS-Lab / Re: Index Homing

« on: December 21, 2018, 01:31:06 PM »

No, I haven’t . Where is that setting?

12

CS-Lab / Re: Index Homing

« on: December 21, 2018, 06:26:42 AM »

I load the plugin configuration, click on the y axis, then under index homing is encoder pulses/Rev, I've changed this figure but it makes no difference. Am I in the correct place?

13

CS-Lab / Re: Index Homing

« on: December 20, 2018, 06:13:33 PM »

ok, so it looks like the encoder was faulty, I've now changed the encoder and index homing is now working.....ish!

Now I have a new problem, The machine doesn't home in the middle of the Y Axis anymore. My thought is this is becuase the new encoder has a different number of pulses per revolution compared to the old one. The old one had a 1250 PPR. This is my new encoder, (which is the same as I use on my z axis, which works perfect) https://www.cui.com/product/resource/amt10.pdf

Where in the software do I change the PPR to the new figure, I assume is 2048 ppr?

14

CS-Lab / Re: Index Homing

« on: December 19, 2018, 02:55:41 PM »

I've checked all the cables, and all looks good, I've also tried moving the encoder input to another channel on the encoder, but still have the same issue. I've tried checking the output of the I channel of the encoder with a DVM, but as you say I can't see anything changing, I have a constant 3.5v.

I updated the firmware to the latest version for mach3

Is there anything else I can do??

15

CS-Lab / Re: Index Homing

« on: December 17, 2018, 10:35:50 AM »

Yes, I'm using servo's with rotary encoders on the back. I'll double check the cabling on them.

Thanks for all the info guys

16

CS-Lab / Re: Index Homing

« on: December 15, 2018, 07:03:32 PM »

I think the encoder is differential, I'll need to double check, it was a few years ago since I did the conversion.

is it likely that one channel could go down, or would it more likely be a cabling fault?

maybe this is an excuse to buy myself a cheap scope

17

CS-Lab / Index Homing

« on: December 15, 2018, 06:31:19 PM »

Hi Guys,

I'm using CSMIO IP/A on my old bridgeport milling machine for a few years now. All has been ok, but index homing has just stopped working. I've reloaded a previous config and get same issue. So I think its a hardware / sensor issue.

The machine references the z axis fine, then starts the y axis, moves the the homing switch, and reverses direction, usually then it starts slow then moves quicker, but it doesn't ever speed up, and doesn't find the index.

any ideas what to check next? If I manually turn the servo the DRO on the mach3 DRO display changes , so I guess the encoder is working?

18

Show"N"Tell ( Your Machines) / Re: Where do I start Bridgeport Interact Series 1

« on: December 09, 2014, 06:37:18 AM »

A little update, the machine has been up and running for around a year now. No issues really.I had to tune the servo driver as hood suggested to one axis but all seems good.

The next job I have is to fit the VFD. Does anyone know where I can buy some pulleys from to replace the varispeed head? While the head is apart I also plan to replace the bearings as these are getting noisy. Can I get these in the UK for reasonable money?

19

General Mach Discussion / Re: Probe-It probing wizard - 2D perimeter probing

« on: November 27, 2014, 11:09:25 AM »

I hope he is still selling it as it works amazing well, I use it often, I'd be lost without it

20

General Mach Discussion / Motor tuning Bocsh servo drives

« on: June 24, 2014, 10:06:52 AM »

I've got bosch servo dives fitted to my bridgeport interact. I'm getting a lot of chatter on my x axis, and often this trips out the breaker inside the machine. I guess this is down to motor tuning?? Does anyone know how I can use the document attached with Mach3, or is there any easier way to tune the motor?

thanks

Jim