Assembly demo 1 (解释待完善) 

  1 import cadquery as cq
  2 
  3 # Parameters
  4 H = 400
  5 W = 200
  6 D = 350
  7 
  8 PROFILE = cq.importers.importDXF("vslot-2020_1.dxf").wires()
  9 
 10 SLOT_D = 6
 11 PANEL_T = 3
 12 
 13 HANDLE_D = 20
 14 HANDLE_L = 50
 15 HANDLE_W = 4
 16 
 17 
 18 def make_vslot(l):
 19     return PROFILE.toPending().extrude(l)
 20 
 21 
 22 def make_connector():
 23     rv = (
 24         cq.Workplane()
 25         .box(20, 20, 20)
 26         .faces("<X")
 27         .workplane()
 28         .cboreHole(6, 15, 18)
 29         .faces("<Z")
 30         .workplane(centerOption="CenterOfMass")
 31         .cboreHole(6, 15, 18)
 32     )
 33 
 34     # tag mating faces
 35     rv.faces(">X").tag("X").end()
 36     rv.faces(">Z").tag("Z").end()
 37 
 38     return rv
 39 
 40 
 41 def make_panel(w, h, t, cutout):
 42     rv = (
 43         cq.Workplane("XZ")
 44         .rect(w, h)
 45         .extrude(t)
 46         .faces(">Y")
 47         .vertices()
 48         .rect(2 * cutout, 2 * cutout)
 49         .cutThruAll()
 50         .faces("<Y")
 51         .workplane()
 52         .pushPoints([(-w / 3, HANDLE_L / 2), (-w / 3, -HANDLE_L / 2)])
 53         .hole(3)
 54     )
 55 
 56     # tag mating edges
 57     rv.faces(">Y").edges("%CIRCLE").edges(">Z").tag("hole1")
 58     rv.faces(">Y").edges("%CIRCLE").edges("<Z").tag("hole2")
 59 
 60     return rv
 61 
 62 
 63 def make_handle(w, h, r):
 64     pts = ((0, 0), (w, 0), (w, h), (0, h))
 65 
 66     path = cq.Workplane().polyline(pts)
 67 
 68     rv = (
 69         cq.Workplane("YZ")
 70         .rect(r, r)
 71         .sweep(path, transition="round")
 72         .tag("solid")
 73         .faces("<X")
 74         .workplane()
 75         .faces("<X", tag="solid")
 76         .hole(r / 1.5)
 77     )
 78 
 79     # tag mating faces
 80     rv.faces("<X").faces(">Y").tag("mate1")
 81     rv.faces("<X").faces("<Y").tag("mate2")
 82 
 83     return rv
 84 
 85 
 86 # define the elements
 87 door = (
 88     cq.Assembly()
 89     .add(make_vslot(H), name="left")
 90     .add(make_vslot(H), name="right")
 91     .add(make_vslot(W), name="top")
 92     .add(make_vslot(W), name="bottom")
 93     .add(make_connector(), name="con_tl", color=cq.Color("black"))
 94     .add(make_connector(), name="con_tr", color=cq.Color("black"))
 95     .add(make_connector(), name="con_bl", color=cq.Color("black"))
 96     .add(make_connector(), name="con_br", color=cq.Color("black"))
 97     .add(
 98         make_panel(W + 2 * SLOT_D, H + 2 * SLOT_D, PANEL_T, SLOT_D),
 99         name="panel",
100         color=cq.Color(0, 0, 1, 0.2),
101     )
102     .add(
103         make_handle(HANDLE_D, HANDLE_L, HANDLE_W),
104         name="handle",
105         color=cq.Color("yellow"),
106     )
107 )
108 
109 # define the constraints
110 (
111     door
112     # left profile
113     .constrain("left@faces@<Z", "con_bl?Z", "Plane")
114     .constrain("left@faces@<X", "con_bl?X", "Axis")
115     .constrain("left@faces@>Z", "con_tl?Z", "Plane")
116     .constrain("left@faces@<X", "con_tl?X", "Axis")
117     # top
118     .constrain("top@faces@<Z", "con_tl?X", "Plane")
119     .constrain("top@faces@<Y", "con_tl@faces@>Y", "Axis")
120     # bottom
121     .constrain("bottom@faces@<Y", "con_bl@faces@>Y", "Axis")
122     .constrain("bottom@faces@>Z", "con_bl?X", "Plane")
123     # right connectors
124     .constrain("top@faces@>Z", "con_tr@faces@>X", "Plane")
125     .constrain("bottom@faces@<Z", "con_br@faces@>X", "Plane")
126     .constrain("left@faces@>Z", "con_tr?Z", "Axis")
127     .constrain("left@faces@<Z", "con_br?Z", "Axis")
128     # right profile
129     .constrain("right@faces@>Z", "con_tr@faces@>Z", "Plane")
130     .constrain("right@faces@<X", "left@faces@<X", "Axis")
131     # panel
132     .constrain("left@faces@>X[-4]", "panel@faces@<X", "Plane")
133     .constrain("left@faces@>Z", "panel@faces@>Z", "Axis")
134     # handle
135     .constrain("panel?hole1", "handle?mate1", "Plane")
136     .constrain("panel?hole2", "handle?mate2", "Point")
137 )
138 
139 # solve
140 door.solve()
141 
142 show_object(door, name="door")

 

posted @ 2023-10-13 00:07  Arxu  阅读(43)  评论(0)    收藏  举报