aarongough/haas_investigation.md

## haas_investigation.md

      
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    HAAS Acceleration Calculations

VF3


Y AXIS: Mits 900W Servo, 1500 Rated RPM, 3000 Max RPM, 5.39NM
Ballscrew: 40MM DIA 8MM Pitch
Max load: 3500 lb (1588 kg)
Max thrust: 2550 lbf (11343 N)
Advertised max feedrate: 1000 ipm
Calculated max feedrate (max rpm * pitch): 944 ipm
Max cceleration with rated load (+ 800lb saddle/table): 11343 / (1588 + 362) = 5.81 m/s2 (0.59 G)
Acceleration with VF3SS max load (+ 800lb saddle/table): 11343 / (794 + 362) = 9.81 m/s2 (1.00G)
Acceleation with 500lb (227kg) load (+ 800lb saddle/table): 11343 / (227 + 362) = 19.25 m/s2 (1.96G)

VF3SS


Y AXIS: Mits 1.3KW Servo, 1500 Rated RPM, 3000 Max RPM, 8.34NM
Ballscrew: 40MM DIA 12MM Pitch
Max load: 1750 lb (794 kg)
Max thrust: 3085 lbf (13723 N)
Advertised max feedrate: 1400 ipm
Calculated max feedrate (max rpm * pitch): 1417 ipm
Acceleration with max load (+ 800lb saddle/table): 13723 / (794 + 362) = 11.87 m/s2 (1.21G)
Acceleation with 500lb (227kg) load (+ 800lb saddle/table): 13723 / (227 + 362) = 23.29 m/s2 (2.37G)

VM3


Y AXIS: Yaskawa 1.3KW Servo, 1500 Rated RPM, 3000 Max RPM, 8.34NM
Ballscrew: 40MM DIA 6MM Pitch
Max load: 4000 lb (1814 kg)
Max thrust: 4100 lbf (18238 N)
Advertised max feedrate: 710 ipm
Calculated max feedrate (max rpm * pitch): 708 ipm
Acceleration with max load (+ 800lb saddle/table): 18238 / (1814 + 362) = 8.38 m/s2 (0.84G)
Acceleration with VF3SS max load (+ 800lb saddle/table): 18238 / (794 + 362) = 15.78 m/s2 (1.60G)
Acceleation with 500lb (227kg) load (+ 800lb saddle/table): 18238 / (227 + 362) = 30.96 m/s2 (3.16G)

References:


VF3SS/VM3 Service Manual: https://diy.haascnc.com/sites/default/files/Locked/2/VF3_YT_SS_40_50_VF5_XT_SS_BASE_ASSEMBLY_APR_2013.PDF
VF3 Service Manual: https://diy.haascnc.com/sites/default/files/Locked/2/VF3_BASE_ASSY_APR_2013.pdf
Yaskawa 1.3KW Servo Motor: https://parts.haascnc.com/haasparts/en/USD/Find-Replacement-Parts/Axis-Motion/Y-Axis/Motors/MOTOR%2C-SERVO-SIGMA-1-YASKAWA-13/p/93-0347
Yaskawa 900W Servo Motor: https://parts.haascnc.com/haasparts/en/USD/Find-Replacement-Parts/Axis-Motion/Y-Axis/Motors/MOTOR%2C-SERVO-SIGMA-1-YASKAWA-09-%28SHORT%29/p/93-0346
Yaskawa .85KW Servo Datasheet: https://www.motortong.com/models/163046/SGMG-09A2AB.html
Yaskawa 1.3KW Servo Datasheet: https://www.motortong.com/models/163048/SGMG-13A2AB.html