from types import SimpleNamespace from cadquery import ParallelDirSelector, Workplane, Solid XY = Workplane("XY") center_xy = (True, True, False) class V(SimpleNamespace): def __add__(self, rhs): assert(set(self.__dict__.keys()) <= set(rhs.__dict__.keys())) items = [(k, v + rhs.__dict__[k]) for k,v in self.__dict__.items()] return V(**dict(items)) def __sub__(self, rhs): assert(set(self.__dict__.keys()) <= set(rhs.__dict__.keys())) items = [(k, v - rhs.__dict__[k]) for k,v in self.__dict__.items()] return V(**dict(items)) def __mul__(self, rhs): assert(isinstance(rhs, int)) items = [(k, v *rhs) for k,v in self.__dict__.items()] return V(**dict(items)) def xyz(self): return (self.x, self.y, self.z) def Ext(part, bounds): setattr(part, "bounds", bounds) return part def V3(x, y, z): return V(x=x, y=y, z=z) def V21(v): return V3(2 * v, 2 * v, v) def build_bolt(bolt, shaft, tol): height = shaft + bolt.head_height part = XY.circle(bolt.head_radius).extrude(bolt.head_height) part = part.union(XY.circle(bolt.radius).extrude(height)) bounds = XY.circle(bolt.head_radius + 2 * tol).extrude(bolt.head_height + 2 * tol).translate((0, 0, -tol)) bounds = bounds.union(XY.circle(bolt.radius - 0.1 + tol).extrude(height + 10 + 2 * tol).translate((0, 0, - 10 -tol))) transform = lambda p, h: p.rotate((0, 0, 0), (1, 0, 0), 180).translate((0, 0, h)) return Ext(transform(part, height), transform(bounds, height + tol)) def build_rod(rod, tol): part = XY.circle(rod.outer).circle(rod.inner).extrude(rod.len) bounds = XY.circle(rod.outer + tol).extrude(rod.len + 2 * tol).translate((0, 0, -tol)) return Ext(part, bounds) def build_lid(base, rod, rod_shaft, wall, bolt, bolt_depth, tol, hole_spacing): outer = base inner = base - V21(wall + tol) rod_wall = V(outer = rod.outer + tol + wall, inner = rod.outer + tol, z = rod_shaft.height) part_bolt = build_bolt(bolt, bolt_depth, tol) def gen(tol): outer_padded = outer + V3(tol, tol, tol) * 2 inner_padded = inner - V3(tol, tol, tol) * 2 part = XY.box(*outer_padded.xyz(), centered=center_xy).translate((0, 0, -tol)) part = part.cut(XY.box(*inner_padded.xyz(), centered=center_xy).translate((0, 0, -tol))) for y in range(-1, 2, 2): for x in range(-1, 2, 2): pos = V3(x * hole_spacing.x / 2, y * hole_spacing.y / 2, outer.z) head_radius = bolt.head_radius + wall + tol head_height = bolt.head_height + wall + tol offset_x = (outer.x - 2 * wall - hole_spacing.x) / 2 + tol offset_y = (outer.y - 2 * wall - hole_spacing.y) / 2 + tol part = part.union(XY.circle(head_radius).extrude(head_height) \ .translate((pos + V3(0, 0, -head_height)).xyz())) part = part.union(XY.box(offset_x, offset_y + head_radius, head_height, centered=center_xy) \ .translate((pos + V3(offset_x*x/2, y*(offset_y-(offset_y+head_radius)/2), -head_height)).xyz())) part = part.union(XY.box(offset_x + head_radius, offset_y, head_height, centered=center_xy) \ .translate((pos + V3(x*(offset_x-(offset_x+head_radius)/2), offset_y*y/2, -head_height)).xyz())) if tol != 0: part = part.union(part_bolt.bounds.translate((pos + V3(0, 0, -bolt_depth - bolt.head_height)).xyz())) else: part = part.cut(part_bolt.bounds.translate((pos + V3(0, 0, -bolt_depth - bolt.head_height)).xyz())) return part part = gen(0) part_rod_wall = XY.circle(rod_wall.outer).extrude(rod_wall.z) part = part.union(part_rod_wall.translate((rod_shaft.pos + V3(0, 0, inner.z)).xyz())) part = part.cut(build_rod(rod, tol).bounds.translate(rod_shaft.pos.xyz())) part_bounds = gen(tol) return Ext(part, part_bounds) def build_base(base, rod, rod_shaft, insert, bolt, wall, tol, lid): outer = base inner = outer - V3(2 * wall.x, 2 * wall.y, wall.z) + V21(tol) floor = wall.z - tol part = XY.box(*base.xyz(), centered=center_xy) part = part.cut(XY.box(*inner.xyz(), centered=center_xy).translate((0, 0, floor))) tower_radius = bolt.radius + wall.x + 1 tower_height = inner.z for y in range(-1, 2, 2): for x in range(-1, 2, 2): pos = V3(x * lid.hole_spacing.x / 2, y * lid.hole_spacing.y / 2, floor) offset_x = (inner.x - lid.hole_spacing.x) / 2 offset_y = (inner.y - lid.hole_spacing.y) / 2 part = part.union(XY.box(offset_x, offset_y + tower_radius, tower_height, centered=center_xy) \ .translate((pos + V3(offset_x*x/2, y*(offset_y-(offset_y+tower_radius)/2), 0)).xyz())) part = part.union(XY.box(offset_x + tower_radius, offset_y, tower_height, centered=center_xy) \ .translate((pos + V3(x*(offset_x-(offset_x+tower_radius)/2), offset_y*y/2, 0)).xyz())) part = part.union(XY.circle(tower_radius).extrude(tower_height).translate(pos.xyz())) part = part.union(XY.box(wall.x, inner.y, tower_height, centered=center_xy).translate((-20, 0, floor))) part = part.union(XY.box(wall.x, inner.y, tower_height, centered=center_xy).translate((20, 0, floor))) rod_pos = (rod_shaft.pos + V3(0, 0, floor)).xyz() part = part.union(XY.circle(rod.outer + wall.x + 2).extrude(tower_height).translate(rod_pos)) fill_y = inner.y / 2 - rod_shaft.pos.y part = part.union(XY.box(40, fill_y, tower_height, centered=center_xy).translate(rod_pos)\ .translate((0, -rod_shaft.pos.y+inner.y/2-fill_y/2, 0))) part = part.cut(XY.circle(rod.outer + tol).extrude(tower_height).translate(rod_pos)) part = part.union(XY.box(40, fill_y, 3, centered=center_xy).translate(rod_pos)\ .translate((0, -rod_shaft.pos.y+inner.y/2-fill_y/2, 0))) part = part.cut(XY.box(20, 25, 8, centered=center_xy).translate(rod_pos).translate((0, -rod.outer - wall.x/2))) part = part.cut(build_lid(**lid.__dict__).bounds.translate((0, 0, base.z - lid.base.z))) return part def main(): # TEST PRINT base = V3(80, 80, 15) rod_shaft = V(pos = V3(0, 0, 0), height = 20) tol = 0.05 rod = V(outer = 25 / 2, inner = 21 / 2, len = 500) #base = V3(120, 120, 30) #rod_shaft = V(pos = V3(0, 30, 0), height = 35) thin_wall = 2.4 thick_wall = 4 bolt = V(radius = 3 / 2, head_radius = 5.4 / 2, head_height = 3) bolt_depth = 10 + 1 lid = V3(base.x, base.y, 10) lid_hole_spacing = V3(lid.x - 15, lid.y - 15, 0) insert = V(radius=5 / 2, height=5) base_wall = V3(thick_wall, thick_wall, thin_wall) #show_object(build_rod(rod).translate((0, 0, 10))) lid_ctx = V(base=lid, rod=rod, rod_shaft=rod_shaft, wall=thin_wall, bolt=bolt, bolt_depth=bolt_depth, tol=tol, hole_spacing=lid_hole_spacing) show_object(build_lid(**lid_ctx.__dict__).translate((150, 0, 0))) base_ctx = V(base=base, rod=rod, rod_shaft=rod_shaft, bolt=bolt, wall=base_wall, tol=tol, insert=insert) show_object(build_base(**base_ctx.__dict__, lid=lid_ctx)) main()