Hardinge Accuslide Gang Tool Lathe Acorn Conversion

All things related to the Centroid Acorn CNC Controller

Moderator: cnckeith

slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

DMM AC servos arrived today. I did a lot of measuring prior to ordering. I knew they were close. They are! The original servos had 3/8” shafts. I found a 1/4 coupler of the same style. Worked great with the DMM’s 1/4” shaft. I had to turn down the heads of the socket head cap screws so they would go in to the bracket straight.

The X axis bracket is going to have to have about 0.4” milled off so the coupler will engage. I’m thinking I can modify the existing part. Not sure about extending the existing threaded mounting holes further in.. I may have to make a new bracket.

Image

Line scratched showing where motor would mount up:
Image

Image

The Z axis coupler has a much smaller gap. I think it will need to be closed up, too.

Image

Image
martyscncgarage
Posts: 9810
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
CNC Control System Serial Number: none
Location: Mesa, AZ

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by martyscncgarage »

NEMA 23 or 34? 400W?
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

DMM NEMA 23. The little guy. Yes, 400W.
martyscncgarage
Posts: 9810
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
CNC Control System Serial Number: none
Location: Mesa, AZ

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by martyscncgarage »

slodat wrote: Sat Aug 01, 2020 10:57 am DMM NEMA 23. The little guy. Yes, 400W.
Should do quite well. What power supply are you using? I used a 57VDC from Antekinc.com
Encoder on the spindle already?
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

It has a spindle encoder. I’m using DYN4 with 120vac supply.
slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

Got the X axis motor mount modeled.

Image

All I have on hand is some 3.5” round stock. This is definitely the most complicated (feature rich?) part I’ve made. I’m sure the first will be a test part.

Image
I ordered a 3 x 3.5” x 12” bar from Xometry. Hopefully I’ll only use a 3” chunk of it for the final part and have plenty left for the Z motor mount.
carbuthn
Posts: 178
Joined: Tue Jan 15, 2019 11:40 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by carbuthn »

Slodat,
I don't know which software you are using (maybe Fusion 360), but I am in the process of using Fusion 360 to draw some parts for a steam engine. I have done the frame and crosshead brace so far, in any case a few things that I have learned so far.
1. Pick tools that are big enough to take some abuse without breaking (1/4" is a good start)
2. Layout the part to make machining the easiest, how are you going to hold it? Bore through it, tap the holes etc.
3. Filet the corners, in you part the inside has sharp corners, end mills are round, a radius slightly bigger than the end mill 0.30" for 1/4" end mill makes clean corners.
4. Through hole are easier to tap, but penetrating into an edge can break the drill bit.
5. If thread milling the holes and you break the cutter you can sometimes get the broken end to fall out.
6. Make sure mill is calibrated for turns per inch if dimension is critical, it is easier than having to rebore to correct size, in Fusion 360 for stock to leave you can set it for a negative number. For example I had a hole that was 0.875" in diameter, but the bearing was 0.875" (tight press fit), I set the stock to leave to 0.0015" for a push fit.

Hope this helps some, if not maybe it will help someone else,
Chuck
slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

Thanks Chuck! Learned a couple things. I appreciate it! I don’t fuss with drawing edge chamfers in the model, just grab the geometry and use a chamfer tool path. Seems easier to me.

I believe this ends up being a four sided part.. That’s how I’m seeing it thus far. Previous post didn’t show these two counterbored holes.
07581F4E-4B7D-4807-894C-20EFBF97AC56.png
slodat
Posts: 699
Joined: Thu Apr 12, 2018 11:16 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by slodat »

Starting to get the components laid out. I’d like to get everything in the existing two enclosures.

Spindle drive and AC components:

Image

Control and servo drives in the control panel enclosure:
Image

Image
martyscncgarage
Posts: 9810
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
CNC Control System Serial Number: none
Location: Mesa, AZ

Re: Hardinge Accuslide Gang Tool Lathe Acorn Conversion

Post by martyscncgarage »

Hmm, looks like an accessibility problem?
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
Post Reply