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Fastener height spacing

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This commit is contained in:
Christian Colglazier 2022-05-22 20:42:31 -04:00
parent 9462e22b3c
commit 48b61652da
1 changed files with 31 additions and 29 deletions
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60
follow_focus.py
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@ -7,45 +7,47 @@ from shapely.geometry import LineString
from shapely.geometry import Point
# M3 screws for attaching lid
m3_tap=2.5
m3_head_diameter=6
m3_head_depth=3
m3_passthrough=3.5
m3_tap= 2.5
m3_head_diameter= 6
m3_head_depth= 3
m3_passthrough= 3.5
# Fastener dimensions
fastener_width = 11
fastener_height = 3.5
fastener_length = 20
fastener_width= 11
fastener_height= 3.5
fastener_length= 20
fastener_h_spacing= .2
# NEMA 17 stepper motor
stepper_motor_size=42.0
stepper_hole_width=31.0
stepper_motor_size= 42.0
stepper_hole_width= 31.0
# Case
part_thinkness=20
outer_fillets=2.5
slant_degree=15.0
wall_width=1.6
loop_width=wall_width
loop_angle=40
rod_diameter=15.2
offset=9
tab_height=6
tab_width=25
part_thinkness= 20
outer_fillets= 2.5
slant_degree= 15.0
wall_width= 1.6
loop_width= wall_width
loop_angle= 40
rod_diameter= 15.2
offset= 9
tab_height= 6
tab_width= 25
# Gears
mod=0.8
gear_gap=0.2
gear_offset=0.5
large_gear_diameter=8.5
gear_thinkness=10
sg_teeth=11
mod= 0.8
gear_gap= 0.2
gear_offset= 0.5
large_gear_diameter= 8.5
gear_thinkness= 10
sg_teeth= 11
# Other
mount_gap=2
support_radius=11/2
mount_gap= 2
support_radius= 11/2
# Calculated values
fastener_hole_depth = tab_height-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))
width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90)))
@ -170,8 +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)
# Fastener
base = base.faces('<<Y[-1]').workplane().circle((fastener_width+1)/2).cutBlind(-4)
fastener = base.faces('<<Y[-4]').workplane().circle(fastener_width/2).extrude(4.5+fastener_height, combine=False)
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).extrude(fastener_hole_depth+fastener_h_spacing+fastener_height, combine=False)
fastener = fastener.faces('<<Y[-1]').workplane().center(-fastener_length,0)\
.line(20,-fastener_width/2)\
.vLine(fastener_width)\