Centroid Community CNC Support Forum

Posted: **Tue Sep 08, 2020 2:15 pm**

Follow along as I do an informal video series on the conversion of an Emco PC5 CNC Lathe (NO TURRET on this one).

Google Photo Album: https://photos.app.goo.gl/jbVWaHxtJvgm4XY87

Material/Parts list provided below. USE AT YOUR OWN RISK (I will add to/edit this list as I go along):

Centroid CNC Acorn for motion control system with Pro Lathe License:
https://www.centroidcnc.com/centroid_di ... oller.html

Direct 3 phase replacement motor from TVT America (B14 frame):
https://www.tvtamerica.net/collections/ ... /tn63c2-na

VFD to be a 1/2hp TD200 Series, 120V single phase input, 230VAC Output Sensorless Vector Drive from Factorymation.com:
https://www.factorymation.com/TD200-10P5-1PH

VFD cable(HIGHLY RECOMMENDED!):
https://www.automationdirect.com/adc/sh ... dc-16-4b-1

Leadshine Hybrid stepper drives/motors, interface boards from WWW.CNC4PC.COM:

2 Ea: 2.3 N.m (326 Oz-In) NEMA 23 Stepper Motor with 1000-Line Encoder; 6.35mm (0.25-inch) Shaft
SKU: CS-M22323-S

2 Ea: 2-Phase Closed Loop Stepper Drives. 20-50 VDC Supply Voltage, Max 8A Output Current
SKU: CS-D508

2 Ea: 3-meter high-flex encoder extension cable
SKU: CableH-BM3M0

2 Ea: 3-meter high-flex power extension cable
SKU: CableH-RZ3M0

2 Ea: C34 FOR HYBRID SERVO DRIVE
SKU: C34HS

2 Ea: CAT5-1 FT Booted Cat5e Network Patch Cable - Orange
SKU: CAT5-1

1 Ea: C86 Connector Board for the Acorn Controller
SKU: C86ACORN

Spindle Encoder and bracket from Automationdirect.com:
8mm medium duty, 1000 line, line driver/differential encoder:
https://www.automationdirect.com/adc/sh ... 1000-rzvwd

Right angle bracket for the encoder:
https://www.automationdirect.com/adc/sh ... es/jt-035d

12VDC Ice Cube Control Relay for VFD fault circuit (GS1 has minimal outputs)
Relay:
https://www.automationdirect.com/adc/sh ... 781-1c-12d
Socket:
https://www.automationdirect.com/adc/sh ... 781-1c-skt

Meanwell Power supplies:
AMAZON:
Axis motor power supply. Meanwell NDR24--24:
https://amzn.to/4bNc7cO

24VDC Logic Power Supply:
Mean Well MDR-40-24 Power Supply, DIN-Rail, 24 Volt, 1.7 Amp, 40.8 Watt, 3.9" x 1.6" x 3.5" Size
https://amzn.to/4bSqX1M

Ethernet Shielded Bulkhead connector:
InstallerParts CAT6 RJ45 Shielded Industrial Panel Mount Bulkhead Female/Female Feed Thru Coupler - Network Connectors - IP67 Waterproof/Dust
https://amzn.to/49yGZfx

Ethernet 3' Shielded Cable:
Monoprice 111339 Cat6A Ethernet Patch Cable - 3 feet - Blue | Zeroboot, RJ45, Stranded, 550Mhz, STP, Pure Bare Copper Wire, 10G, 26AWG - Entegrade Series
https://amzn.to/3IhMYtj

Logitech K400 Plus Keyboard
https://amzn.to/3uRVSKY

Leze - Ultra Thin Silicone Laptop Keyboard Cover Skin Protector for Logitech K400 plus
https://amzn.to/4bSgzXT

HQ 10-Pin 5.08mm Screw Terminal Block:
https://www.mdfly.com/products/hq-10-pi ... mount.html

Control Cabinet. :
https://amzn.to/3TduujQ

Centroid Cable Management System with integrated Strain Relief:
https://www.centroidcnc.com/centroid_di ... nents.html
https://www.centroidcnc.com/centroid_di ... f_1080.jpg

8MM XB.BB.191 8mm NPN NO Hall Effect Sensor and 6mmx1mm magnet
I purchase on ebay. Be careful, end of sensor must be flush tip, not protruding.

Estop Contactor Moeller DILM9-10 24VDC Coil (Can be found new various suppliers)

Panelmount fuse holder 15A/120V Jameco:
https://www.jameco.com/z/FH55B-LKG-Indu ... 79649.html

Timing Pulleys and belts from Stock Drive Products
Timing belt MXL Kevelar belt from motor to ballscrew (2) A 6B16-061037
https://shop.sdp-si.com/catalog/product ... B16-061037
.375" 20T MXL Pulley for motor (2):
https://shop.sdp-si.com/catalog/product ... -020DF3708

Timing belt MXL from encoder to spindle. (1)
https://shop.sdp-si.com/catalog/product ... Z16-171037
Encoder pulley 60T MXL .375" wide, with flange, must be bored from .25" to 8mm to fit
Spindle Pulley, must be bored to fit spindle, drilled and tapped for setscrew:
https://shop.sdp-si.com/catalog/product ... -060NF3708

ON/OFF Two Position Switch. Amazon:
APIELE (Pack of 2)22mm 2 Position Selector Switch Maintained 1NO XB2-10X/21 (2 Position Maintained)
by API Electric
https://amzn.to/3V3x8u5

Estop button, 22MM (I like these because the frame is metal, not plastic, uses standard contact blocks:
mxuteuk 1 NC 22mm Red Mushroom Emergency Stop Push Button Switch AC 660V 10A ，1 Year Warranty HB2-BS542
by mxuteuk
https://amzn.to/49OzEbB

120MM 120VAC Cabinet Cooling Fan Assembly. Amazon:
GDSTIME EC Cooling Fan, 120mm Fan, 120mm 38mm AC 110V 115V 120V 220V 240V, Dual Ball Bearing
https://amzn.to/48BoCFN

120MM Fan Filter assembly:
ELUTENG 120mm Fan Filter 2 Pack IP40 Dustproof Blower Guard ABS Computer Ventilator Grill 12cm Fan Mesh Cover Tool-Free Fan Strainer Compatible for 120x120 Case Fan USB Cooling Fan
https://amzn.to/49Pjcb6

9' 14/3 Heavy Duty Cord:
https://www.homedepot.com/p/Husky-9-ft- ... /303679849

Posted: **Tue Sep 08, 2020 2:19 pm**

Part 1: Stripping the machine and removing the existing control cabinet
Will NOT be reusing the existing stepper motors OR the MXL pulleys.
Only the spindle motor mount will be kept. All other electronics are removed.

This video shows mostly how to remove the cabinet. There is a bead of silicone that helps adhere the cabinet to the back of the machine.
There are the two obvious screws on each side but there are two sheet metal screws under the operator panel that need to be removed.
Carefully insert a wide blade screw driver in between the cabinet and the machine and gently twist the screw driver. You will hear the silicon let loose...

Marty

Posted: **Tue Sep 08, 2020 2:51 pm**

This ought to be fun - Thanks Marty!

Posted: **Thu Sep 10, 2020 2:22 pm**

Looks like a good donor machine!

Why don't you go for the Leadshine "integrated easy servo" drives/motors? They are the same basic parts but they eliminate the need for messy encoder and motor cables. Just provide the DC supply and the step/dir signal direct to the motor. They would also save that valuable cabinet space you mention.
http://leadshine.com/productdetail.aspx ... l=iES-2320

Posted: **Thu Sep 10, 2020 2:39 pm**

Muzzer wrote: ↑Thu Sep 10, 2020 2:22 pm Looks like a good donor machine!

Why don't you go for the Leadshine "integrated easy servo" drives/motors? They are the same basic parts but they eliminate the need for messy encoder and motor cables. Just provide the DC supply and the step/dir signal direct to the motor. They would also save that valuable cabinet space you mention.
http://leadshine.com/productdetail.aspx ... l=iES-2320

Because the customer has several machines, we opted to be consistent with all and use the same motor drive combination.

Already have the cabinet and those with a cover rather than a door are substantially less expensive. I put a .0625" closed cell foam gasket on the cover flange.

So many people fight trying to reuse existing cabinets, or buy used. Not worth the time and aggravation. Buy the right size that works with room to do what is needed.
Zoro.com ships for $5....and if you sign up, they frequently have 15% discounts....

Posted: **Thu Sep 10, 2020 8:55 pm**

This video goes over the hall effect sensors used to home the machine and machining a 60 tooth encoder pulley for use on the spindle. Waiting for parts...