Stratasys, Inc.

Joseph L Calderon

J Samuel Batchelder

Andrew Mason Hahn

David L Pollard

Disclosed are a method and apparatus for initializing an additive process computer-controlled three-dimensional modeling machine which builds models on a modeling platform. The method, without operator intervention, senses the top surface of a substrate or other object mounted on the platform at a variety of preselected x, y locations and records the z-axis positions of the platform corresponding to the sensing of the object. Using the recorded z-axis positions, a z-start position for the modeling platform is calculated. The platform can be automatically placed at the calculated z-start position. The recorded z-axis positions can further be used to define a plane fitted to the substrate top surface. Optionally, the model can be built in a coordinate system defined by the plane.

Autoinitialization in a three-dimensional modeling machine

A system for mounting a slab substrate in a three-dimensional modeling machine includes two parallel rails positioned on opposite sides of a modeling platform. A blade extends along each rail, each blade having an inward-facing knife edge. A slab substrate having a width which approximates the distance between the two rails and having slits in its sides is loaded in the machine by lining up the slits, respectively, with each blade and pushing the substrate towards the rear of the platform as the knife edges cut into the substrate. Preferably, the platform includes a rear stopper to stop rearward motion of the substrate. The platform preferably also includes a retaining means at its front edge that is actuated to lock the substrate into place on the platform during modeling. The substrate is removed from the platform by deactuating the retaining means, if any, grasping the substrate, and sliding the substrate towards the front of the platform.

Growing community of inventors

Carlsbad, CA, United States of America

Joseph L Calderon