Layout – Handle

Although layout–handle and layout-face parts are in the joystick CAD assembly, they are not used in Boolean operations to produce solid models.  Layout parts record changes to profile shapes and make editing easy and fast.  Composed of reference curves, they are the only parts in the joystick assembly with geometry that can be changed without a direct impact to the assembly.

Original Design

Original iteration of layout-handle part design (illustrations 2.1.0, 2.2.0 and 2.2.1).

Illustration 2.2.0 detail view of layout-handle sketch curves. Curves for the grip, fillet and head part-profiles are featured in a single sketch. Same geometry with one-step history tree and isometric view are shown in illustration 2.2.1.  Note angle of top button boss plane.

Latest Design

Illustration 2.3.0 contains the latest layout-handle part.

The current layout-handle design divides the original one-step-part creation above, into 4 separate sketches and a coordinate system is added. This new coordinate system creates the “top button boss X-Y plane” and is located at the intersection of 2 curves as shown.  The new X-Y plane is perpendicular to vertical (Y-Z plane) with an angle of 25° around the X axis.

Note increased complexity of the part and 4 steps in the new history tree shown in illustrations below.  First node of the history tree (illustrations 2.4.0 and 2.4.1) are curves for the grip outline shape.

Results of create reference curve operation in illustration 2.4.2.

Second major node of history tree is fillet part outline sketch (illustrations 2.5.0, 2.5.1 and 2.5.2).

Reference curve results (illustration 2.5.2).

Third node of history tree is the head part vertical profile outline (illustrations 2.6.0, 2.6.1 and 2.6.2). Note 25° head angle dimension.

Resulting reference curves.

Last step of history tree is a sketch in the top button plane illustrations 2.7.0 and  2.7.1.  The parabolic reference curve is used to size perpendicular-plane elliptical cross-sections in the head part and locate side boss features.

Resulting reference curves and the completed layout–handle part.