cell_measure_robot/pneumatics/sensor_tip.step

@@ -0,0 +1,697 @@
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+ENDSEC;
+END-ISO-10303-21;

cell_measure_robot/pneumatics/tconnector.py

@@ -0,0 +1,112 @@
+
+import cadquery as cq
+from cq_warehouse.thread import (
+    IsoThread
+)
+from ocp_vscode import show, show_object
+from cadquery.occ_impl.exporters import ExportTypes
+
+MM = 1
+IN = 25.4 *MM
+
+distance = 15 *MM
+
+seal_outer_diam = 8.2 *MM
+seal_depth = 5.27 *MM
+seal_torus_diam = 1.5 *MM
+cartridge_small_diam = 7.6 *MM
+cartridge_small_depth = 6.6 *MM
+cartridge_large_diam = 8.85 *MM
+cartridge_large_depth = 3.6 *MM
+
+eps = 0.1 * MM
+
+version = "G1_8"
+# version = "M7"
+
+if version == "G1_8":
+    major_diam = 9.7 * MM  + eps*2
+    pitch=0.907 * MM
+    length=12 * MM
+    housing_factor = 2
+
+elif version == "M7":
+    major_diam = 7 * MM + eps*2
+    pitch=1 * MM
+    length=8 * MM
+    housing_factor = 1.75
+
+else:
+    raise ValueError("Invalid version")
+
+
+cartridge = cq.importers.importStep("cell_measure_robot/pneumatics/sensor_tip.step")
+
+iso_external_thread = IsoThread(
+    major_diameter=major_diam,
+    pitch=pitch,
+    length=length,
+    external=True,
+    end_finishes=("chamfer", "chamfer"),
+)
+
+iso_external_core = (
+    cq.Workplane("XY")
+    .circle(iso_external_thread.min_radius)
+    .extrude(iso_external_thread.length)
+)
+iso_external = iso_external_thread.cq_object.fuse(iso_external_core.val())
+
+housing_diameter = cartridge_large_diam * housing_factor
+housing = (
+    cq.Workplane("XY")
+    .rect(housing_diameter, housing_diameter)
+    .workplane(offset=iso_external_thread.length + distance)
+    .center(0, housing_diameter/2)
+    .rect(housing_diameter, housing_diameter * 2)
+    .workplane(offset=iso_external_thread.length)
+    .rect(housing_diameter, housing_diameter * 2)
+    .loft()
+)
+# Side A
+housing = housing.cut(iso_external)
+# Side B
+housing = housing.cut(iso_external.translate((0, 0, iso_external_thread.length + distance)))
+
+# Cartidge hole
+moved_cartridge = (
+    cartridge.rotate((0, 0, 0), (1, 0, 0), 90)
+    .translate((0, housing_diameter, iso_external_thread.length*2 + distance + 0.9))
+)
+housing = housing.cut(moved_cartridge)
+
+# straight channel
+housing = (
+    housing.faces("<Z")
+    .circle(iso_external_thread.min_radius)
+    .cutThruAll()
+)
+
+sweep = (
+    housing.faces(">Z")
+    .workplane(centerOption="CenterOfBoundBox", offset=-cartridge_small_depth)
+    .center(0, housing_diameter/2)
+    .circle(cartridge_small_diam / 2)
+    .workplane(offset=cartridge_small_diam/2-(iso_external_thread.length + distance/2))
+    .center(0, -housing_diameter)
+    .transformed(rotate=(-90, 0, 0))
+    .circle(seal_outer_diam / 2)
+    .loft(combine=False)
+)
+housing = housing.cut(sweep)
+housing = housing.faces("<Y or >Y").edges("not (>Z or <Z)").fillet(2)
+
+
+# show_object(iso_external_thread.cq_object, name="iso_external_thread")
+# show_object(iso_external_core, name="iso_external_core")
+# show_object(iso_external, name="iso_external")
+show_object(housing, name="housing")
+
+
+with open(f"t_connector_{version}.step", "w") as fp:
+   cq.exporters.exportShape(housing, ExportTypes.STEP, fp)