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tests.py
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#!/usr/bin/env python
import numpy as np
import pylab
import pymachining as pm
Q_ = pm.getQ()
def test_drill1(stock_material):
cutter_diameter = Q_(12.7, 'mm')
drill = pm.DrillHSS(cutter_diameter)
drill_op = pm.DrillOp(drill, stock_material)
feed_per_revolution = drill.feed_rate(stock_material)
sfm = stock_material.sfm()
spindle_rpm = drill_op.rrpm(sfm)
P = drill_op.net_power(feed_per_revolution, spindle_rpm)
print(feed_per_revolution, spindle_rpm, P, sep='\n')
def test_drill2(m, stock_material):
cutter_diameter = Q_(12.7, 'mm')
drill = pm.DrillHSS(cutter_diameter)
drill_op = pm.DrillOp(drill, stock_material)
feed_per_revolution = drill.feed_rate(stock_material)
sfm = stock_material.sfm()
spindle_rpm = drill_op.rrpm(sfm)
P = drill_op.net_power(feed_per_revolution, spindle_rpm)
print(feed_per_revolution, spindle_rpm, P, sep='\n')
m.plot_torque_speed_curve(highlight_power=P, highlight_rpm=spindle_rpm)
pm.DrillHSS.plot_feedrate(stock_material)
pm.DrillHSS.plot_thrust(stock_material, highlight=m.max_feed_force)
def test_drill3(m, stock_material):
do_once = True
x = []
y1 = []
y2 = []
ax = []
ay1 = []
ay2 = []
ay3 = []
ay4 = []
for diam in np.linspace(1 / 64., 1., 100):
cutter_diameter = Q_(diam, 'inch')
drill = pm.DrillHSS(cutter_diameter)
drill_op = pm.DrillOp(drill, stock_material)
sfm = stock_material.sfm() * 1
feed_per_revolution = drill.feed_rate(stock_material)
spindle_rpm_r = drill_op.rrpm(sfm)
spindle_rpm, _ = m.clamp_speed(spindle_rpm_r)
t_c = m.torque_continuous(spindle_rpm)
t_i = m.torque_intermittent(spindle_rpm)
p_c = m.power_continuous(spindle_rpm).to('watt')
p_i = m.power_intermittent(spindle_rpm).to('watt')
P = drill_op.net_power(feed_per_revolution, spindle_rpm).to('watt')
t = drill.thrust(stock_material)
row = [cutter_diameter, sfm, feed_per_revolution, spindle_rpm_r, spindle_rpm, t_c, t_i, p_c, p_i, P, t]
if do_once:
header = '[cutter_diameter, sfm, feed_per_revolution, spindle_rpm_r, spindle_rpm, t_c, t_i, p_c, p_i, P, feed_force]'
print(header)
print(' '.join(f'[{x.units}]' for x in row))
do_once = False
print(' '.join(f'{x.magnitude:.4f}' for x in row))
ax += [diam]
ay1 += [spindle_rpm.magnitude]
ay2 += [feed_per_revolution.magnitude]
ay3 += [P.magnitude]
ay4 += [p_c.magnitude]
pylab.plot(ax, ay3, label='Requested power')
pylab.plot(ax, ay4, label='Available power')
pylab.title('Drilling Power Demands')
pylab.xlabel('Drill diameter [inch]')
pylab.ylabel('Power [watt]')
pylab.legend()
pylab.show()
fig, ax1 = pylab.subplots()
ax1.set_title('Drilling Speeds-Feeds-Power Demands', fontsize=16.)
ax1.set_xlabel('Drill diameter [inch]', fontsize=12)
ax1.set_ylabel("Speed [rpm]", fontsize=12)
ax1.set_xlim([ax[0], ax[-1]])
ax2 = ax1.twinx()
ax3 = ax1.twinx()
ax2.set_ylabel("Feed [ipr]", fontsize=12)
ax3.set_ylabel("Power [watt]", fontsize=12)
def make_patch_spines_invisible(ax):
ax.set_frame_on(True)
ax.patch.set_visible(False)
for sp in ax.spines.values():
sp.set_visible(False)
ax3.spines["right"].set_position(("axes", 1.2))
make_patch_spines_invisible(ax3)
ax3.spines["right"].set_visible(True)
colors = ['#ff0000ee', '#773300ee', '#00ff00ee', '#005533ee',
'#555533ee', '#22ff22ee', '#ff5533ee']
lns = []
lns += ax1.plot(ax, ay1, color=colors[0], label='Speed')
lns += ax2.plot(ax, ay2, color=colors[1], label='Feed')
lns += ax3.plot(ax, ay3, color=colors[2], label='Power requested')
lns += ax3.plot(ax, ay4, color=colors[3], label='Power available')
# ax1.yaxis.label.set_color(lns[0][0].get_color())
# ax2.yaxis.label.set_color(lns[0][0].get_color())
# ax2.yaxis.label.set_color(lns[0][0].get_color())
ax1.set_ylim(bottom=0)
ax2.set_ylim(bottom=0)
ax3.set_ylim(bottom=0)
labs = [l.get_label() for l in lns]
ax1.legend(lns, labs, loc='upper left')
fig.tight_layout()
pylab.show()
def test_drilling_range(m, stock_material):
test_drill1(stock_material)
test_drill2(m, stock_material)
test_drill3(m, stock_material)
def test_tap(m, stock_material):
title = f'Required Tap Torque in {stock_material.name}'
pm.Tap.plot_torque(stock_material, title=title, highlight=m.torque_range())
pm.Tap.plot_torque(stock_material, title=title, highlight=m.torque_range(), min_diam=0, max_diam=.75)
def raw_tests():
m = pm.MachinePM25MV_DMMServo()
# m = pm.MachinePM25MV_HS()
m.plot_torque_speed_curve()
stock_material = pm.Material('aluminum')
# stock_material = pm.Material('steel-mild')
test_drilling_range(m, stock_material)
# test_tap(m, stock_material)
def main():
raw_tests()
if __name__ == "__main__":
main()
def old_stuff():
feed_per_revolution = .2 * (ureg.mm / ureg.turn)
spindle_rpm = 1000 * ureg.tpm
P = drill_op.net_power(feed_per_revolution, spindle_rpm)
print(P)
# Each stock material will have a recommended cutting rate (sfm).
# Each tool will have a recommended feed rate (ipr) determined by its diameter and cut stock material.
# Given a tool,
exit(1)
# %%
v_c = pm.DrillOp.cutting_speed_(cutter_diameter, rpm)
print(cutter_diameter, rpm, v_c, sep='\n')
print(pm.DrillOp.speed_(cutter_diameter, rpm))
print(pm.DrillOp.sfm_(cutter_diameter, rpm))
# %%
# %%
rpm = 1000 * ureg.tpm
v_c = drill_op.cutting_speed(rpm)
print(cutter_diameter, rpm, v_c, sep='\n')
print(drill_op.speed(rpm))
print(drill_op.sfm(rpm))
print(drill_op.rrpm(drill_op.speed(rpm)))
print(drill_op.rrpm(drill_op.sfm(rpm)))
print(drill_op.rrpm(stock_material.sfm()))
# %%
cutter_diameter = 12.7 * ureg.mm
cutting_speed = 40 * ureg.m / ureg.min
n = pm.DrillOp.spindle_speed_(cutter_diameter, cutting_speed)
print(n)
print(f'{n:.2f}')
# %%
cutting_speed = 40 * ureg.m / ureg.min
n = drill_op.spindle_speed(cutting_speed)
print(n)
print(f'{n:.2f}')
# %%
# speed_per_revolution = 1 * ureg.mm / ureg.revolution
# spindle_speed = 1000 * ureg.revolutions_per_minute
# using turn instead of rev_per_min results in simplier final units, without need for to_base_units()
speed_per_revolution = 1 * ureg.mm / ureg.turn
spindle_speed = 1000 * (ureg.turn / ureg.minute)
v_f = pm.DrillOp.penetration_rate_(speed_per_revolution, spindle_speed)
print(v_f)
# print(v_f.to_compact())
# print(v_f.to_base_units())
# print(v_f.to_reduced_units())
# print(v_f.to(ureg.mm / ureg.min))
# %%
# speed_per_revolution = 1 * ureg.mm / ureg.revolution
# spindle_speed = 1000 * ureg.revolutions_per_minute
# using turn instead of rev_per_min results in simplier final units, without need for to_base_units()
speed_per_revolution = 1 * ureg.mm / ureg.turn
spindle_speed = 1000 * (ureg.turn / ureg.minute)
v_f = drill_op.penetration_rate_(speed_per_revolution, spindle_speed)
print(v_f)
# print(v_f.to_compact())
# print(v_f.to_base_units())
# print(v_f.to_reduced_units())
# print(v_f.to(ureg.mm / ureg.min))
# %%
penetration_rate = 1000 * ureg.mm / ureg.min
spindle_speed = 1000 * (ureg.turn / ureg.min)
f_n = pm.DrillOp.feed_per_revolution_(penetration_rate, spindle_speed)
print(f_n)
# %%
penetration_rate = 1000 * ureg.mm / ureg.min
spindle_speed = 1000 * (ureg.turn / ureg.min)
f_n = drill_op.feed_per_revolution(penetration_rate, spindle_speed)
print(f_n)
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = 1 * ureg.mm / ureg.turn
# spindle_speed = 1000 * ureg.revolutions_per_minute
cutting_speed = 1000 * ureg.mm / ureg.min
Q = pm.DrillOp.metal_removal_rate_(cutter_diameter, feed_per_revolution, spindle_speed)
print(Q)
print(Q.to('cm^3 / min'))
# %%
feed_per_revolution = 1 * ureg.mm / ureg.turn
# spindle_speed = 1000 * ureg.revolutions_per_minute
cutting_speed = 1000 * ureg.mm / ureg.min
Q = drill_op.metal_removal_rate(feed_per_revolution, spindle_speed)
print(Q)
print(Q.to('cm^3 / min'))
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = 1 * ureg.mm / ureg.turn
# spindle_speed = 1000 * ureg.revolutions_per_minute
spindle_speed = 1000 * (ureg.turn / ureg.minute)
Q = pm.DrillOp.metal_removal_rate_(cutter_diameter, feed_per_revolution, spindle_speed)
print(Q)
print(Q.to('cm^3 / min'))
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = 1 * ureg.mm / ureg.turn
# spindle_speed = 1000 * ureg.revolutions_per_minute
spindle_speed = 1000 * (ureg.turn / ureg.minute)
Q = drill_op.metal_removal_rate(feed_per_revolution, spindle_speed)
print(Q)
print(Q.to('cm^3 / min'))
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = .2 * (ureg.mm / ureg.turn)
cutting_speed = 75 * (ureg.m / ureg.min)
cutting_speed = 75 * 1000 * (ureg.mm / ureg.min)
specific_cutting_force = 350 * (ureg.newton / ureg.mm ** 2)
# specific_cutting_force.to('kilowatt / cm**3 / min')
print(specific_cutting_force.to_base_units())
P = pm.DrillOp.net_power__(cutter_diameter, feed_per_revolution, cutting_speed, specific_cutting_force)
# print(P)
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = .2 * (ureg.mm / ureg.turn)
cutting_speed = 75 * (ureg.m / ureg.min)
cutting_speed = 75 * 1000 * (ureg.mm / ureg.min)
specific_cutting_force = 350 * (ureg.newton / ureg.mm ** 2)
# specific_cutting_force.to('kilowatt / cm**3 / min')
print(specific_cutting_force.to_base_units())
P = drill_op.net_power2(feed_per_revolution, cutting_speed, specific_cutting_force)
# print(P)
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = .2 * (ureg.mm / ureg.turn)
feed_per_revolution = .01 * .75 * (ureg.inch / ureg.turn)
spindle_rpm = 1000 * (ureg.turn / ureg.min)
# Be careful with expressing units, the way they are written in text may not be the way they should be written in code
# specific_cutting_energy = .065 * (ureg.kilowatt / ureg.cm**3 / ureg.min)
# print(specific_cutting_energy)
specific_cutting_energy = .065 * (ureg.kilowatt / (ureg.cm ** 3 / ureg.min))
# print(specific_cutting_energy)
P = pm.DrillOp.net_power_(cutter_diameter, feed_per_revolution, spindle_rpm, specific_cutting_energy)
print(P)
# %%
cutter_diameter = 12.7 * ureg.mm
feed_per_revolution = .2 * (ureg.mm / ureg.turn)
spindle_rpm = 1000 * (ureg.turn / ureg.min)
# Be careful with expressing units, the way they are written in text may not be the way they should be written in code
# specific_cutting_energy = .065 * (ureg.kilowatt / ureg.cm**3 / ureg.min)
# print(specific_cutting_energy)
specific_cutting_energy = .065 * (ureg.kilowatt / (ureg.cm ** 3 / ureg.min))
# print(specific_cutting_energy)
P = drill_op.net_power(feed_per_revolution, spindle_rpm, specific_cutting_energy)
print(P)