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1 changed files with 10 additions and 12 deletions
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follow_focus.py
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@ -17,7 +17,6 @@ fastener_width= 11
fastener_height= 3.5 fastener_height= 3.5
fastener_length= 20 fastener_length= 20
fastener_h_spacing= .2 fastener_h_spacing= .2
fastener_gap= .2
# NEMA 17 stepper motor # NEMA 17 stepper motor
stepper_motor_size= 42.0 stepper_motor_size= 42.0
@ -46,19 +45,19 @@ sg_teeth= 11
# Other # Other
mount_gap= 2 mount_gap= 2
support_radius= 11/2 support_radius= 11/2
end_y= -4.3
# Calculated values # Calculated values
fastener_hole_depth = tab_height-2 fastener_hole_depth = tab_height-2
lid_thicknesss = (part_thinkness-gear_thinkness)/2 lid_thicknesss = (part_thinkness-gear_thinkness)/2
gap = stepper_motor_size * math.sin(math.radians(slant_degree)) / math.sin(math.radians(90-slant_degree)) gap = stepper_motor_size * math.sin(math.radians(slant_degree)) / math.sin(math.radians(90-slant_degree))
width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90))) width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90)))
end_x = gap+stepper_motor_size-5 end_x=gap+stepper_motor_size-5
outer_ring_diameter = rod_diameter+2*loop_width end_y=-4.3
center_x = end_x-math.cos(math.radians(loop_angle))*outer_ring_diameter/2 outer_ring_diameter=rod_diameter+2*loop_width
center_y = end_y-math.sin(math.radians(loop_angle))*outer_ring_diameter/2 center_x=end_x-math.cos(math.radians(loop_angle))*outer_ring_diameter/2
center_y=end_y-math.sin(math.radians(loop_angle))*outer_ring_diameter/2
# Stepper motor mount points # Stepper motor mount points
stepper_hole_radius = stepper_hole_width/2*math.sqrt(2) stepper_hole_radius=stepper_hole_width/2*math.sqrt(2)
stepper_center = cq.Workplane('XY').lineTo(0, offset)\ stepper_center = cq.Workplane('XY').lineTo(0, offset)\
.polarLine(stepper_motor_size/2, 90-slant_degree)\ .polarLine(stepper_motor_size/2, 90-slant_degree)\
.polarLine(stepper_motor_size/2, -slant_degree)\ .polarLine(stepper_motor_size/2, -slant_degree)\
@ -72,8 +71,8 @@ b = e[1] - slope*e[0]
support_y = end[1]-support_radius support_y = end[1]-support_radius
support_x = (support_y-b)/slope support_x = (support_y-b)/slope
lg_x = support_x-stepper_center[0] lg_x=support_x-stepper_center[0]
lg_y = support_y-stepper_center[1] lg_y=support_y-stepper_center[1]
lg_radius = (math.sqrt(lg_x**2 + lg_y**2)-sg_teeth*mod/2) lg_radius = (math.sqrt(lg_x**2 + lg_y**2)-sg_teeth*mod/2)
def findRodInter(n_x, n_y): def findRodInter(n_x, n_y):
@ -173,9 +172,8 @@ base = base.faces('<<Y[-1]').workplane().center(-5,0).circle(6.5/2).cutBlind(-su
base = base.faces('<<Y[-1]').workplane().circle(8.5/2).cutBlind(-support_radius-mount_gap) base = base.faces('<<Y[-1]').workplane().circle(8.5/2).cutBlind(-support_radius-mount_gap)
# Fastener # Fastener
base = base.faces('<<Y[-1]').workplane().circle(fastener_width/2+fastener_gap).cutBlind(-fastener_hole_depth) base = base.faces('<<Y[-1]').workplane().circle((fastener_width+1)/2).cutBlind(-fastener_hole_depth)
fastener = base.faces('<<Y[-4]').workplane().circle(fastener_width/2)\ fastener = base.faces('<<Y[-4]').workplane().circle(fastener_width/2).extrude(fastener_hole_depth+fastener_h_spacing+fastener_height, combine=False)
.extrude(fastener_hole_depth+fastener_h_spacing+fastener_height, combine=False)
fastener = fastener.faces('<<Y[-1]').workplane().center(-fastener_length,0)\ fastener = fastener.faces('<<Y[-1]').workplane().center(-fastener_length,0)\
.line(20,-fastener_width/2)\ .line(20,-fastener_width/2)\
.vLine(fastener_width)\ .vLine(fastener_width)\