Oak Control, Yaskawa Servos, on Brand New Rigid Head Bed Mill with ATC
Posted: Tue Oct 01, 2019 9:47 pm
I am starting a thread here about setting up the Centroid Oak Control on a brand new bed mill that I recently acquired.
The mill is a Taiwanese CNC ready frame (basically a mill lacking a control and servos) and was imported and purchased from HS&S Machine Tool in San Jose CA. I am very happy with the appearance of the machine it definitely has that Taiwanese niceness and not the dreaded Chinese cheapness.
machine specs:
It is a box way machine. Box ways on the Y and Z at least, and dovetail ways on the X axis. The table measures 14" x 50". Travels are: X = 32", Y = 16", Z = 17" and the head is counter-weighted. Spindle to column distance = 16", Spindle to table distance = 4" - 20". I got an upgrade 8000 RPM BT40 spindle with an oil chiller, and a 16 position umbrella ATC. The spindle motor is 7.5 HP with a 1024 count/turn quadrature line driver encoder (A,B, and Z) where the Z pulse is 1/rev for tool change indexing and starting rigid tapping cycles. The motor is geared to the spindle 1:1 with a genuine Gates PowerGrip (GT3) 8mm pitch 30mm wide belt. The machine also comes equip with the draw bar pneumatic actuator, lube pump, limit switches, air solenoids, coolant pump/sump, work light, metal way covers, and metal splash shields. The ball screws are 0.2" / rev pitch, C3 grade, double nut.
One of the main reasons I liked this machine was because it has the smallest overall size I could find for something with a work envelope this big. So that made it easy to get into my San Francisco garage! Also building the control will allow me to locate the electronics cabinet alongside the mill on the wall rather than on the back of the mill. this will allow me to put the back of the mill against the wall to save space. The footprint of the mill is: X = 73" wide (with table centered, 103" for full X travel), Y = 60" (front to back), and Z = 94" (with head full up). Advertised weight = 6000 pounds.
Centroid Control:
I have acquired: oak board, PLC add 1616 (for ATC control), Centroid Nuc CNC PC with CNC 12 software, DP4 probe, TT1 tool setter, Centroid wireless MPG, options: rigid tapping and unlimited G code file size.
Servos, Servo Drives, and VFD
X, Y, Z servos are Yaskawa Sigma 5, 1 kw AC, with 20 bit encoders (SGMGV-09ADA61), and corresponding Yaskawa Drivers (SGDV-7R6A01A). The spindle motor VFD is a Yaskawa GA700, 200V, 3P, 7.5 kW (CIPR-GA70T2042ABAA-CAAAAA), with a Yaskawa PB-X3 encoder feedback expansion card for operation in closed loop vector mode.
The mill is a Taiwanese CNC ready frame (basically a mill lacking a control and servos) and was imported and purchased from HS&S Machine Tool in San Jose CA. I am very happy with the appearance of the machine it definitely has that Taiwanese niceness and not the dreaded Chinese cheapness.
machine specs:
It is a box way machine. Box ways on the Y and Z at least, and dovetail ways on the X axis. The table measures 14" x 50". Travels are: X = 32", Y = 16", Z = 17" and the head is counter-weighted. Spindle to column distance = 16", Spindle to table distance = 4" - 20". I got an upgrade 8000 RPM BT40 spindle with an oil chiller, and a 16 position umbrella ATC. The spindle motor is 7.5 HP with a 1024 count/turn quadrature line driver encoder (A,B, and Z) where the Z pulse is 1/rev for tool change indexing and starting rigid tapping cycles. The motor is geared to the spindle 1:1 with a genuine Gates PowerGrip (GT3) 8mm pitch 30mm wide belt. The machine also comes equip with the draw bar pneumatic actuator, lube pump, limit switches, air solenoids, coolant pump/sump, work light, metal way covers, and metal splash shields. The ball screws are 0.2" / rev pitch, C3 grade, double nut.
One of the main reasons I liked this machine was because it has the smallest overall size I could find for something with a work envelope this big. So that made it easy to get into my San Francisco garage! Also building the control will allow me to locate the electronics cabinet alongside the mill on the wall rather than on the back of the mill. this will allow me to put the back of the mill against the wall to save space. The footprint of the mill is: X = 73" wide (with table centered, 103" for full X travel), Y = 60" (front to back), and Z = 94" (with head full up). Advertised weight = 6000 pounds.
Centroid Control:
I have acquired: oak board, PLC add 1616 (for ATC control), Centroid Nuc CNC PC with CNC 12 software, DP4 probe, TT1 tool setter, Centroid wireless MPG, options: rigid tapping and unlimited G code file size.
Servos, Servo Drives, and VFD
X, Y, Z servos are Yaskawa Sigma 5, 1 kw AC, with 20 bit encoders (SGMGV-09ADA61), and corresponding Yaskawa Drivers (SGDV-7R6A01A). The spindle motor VFD is a Yaskawa GA700, 200V, 3P, 7.5 kW (CIPR-GA70T2042ABAA-CAAAAA), with a Yaskawa PB-X3 encoder feedback expansion card for operation in closed loop vector mode.