Apparatus and method for forming three-dimensional objects using linear solidification and a vacuum blade

• US 9,902,112 B2
• Filed: 04/07/2015
• Issued: 02/27/2018
• Est. Priority Date: 04/07/2015
• Status: Active Grant

• Current Assignee: Gulf Filtration Systems Inc. (Desktop Metal, Inc.)
• Original Assignee: Gulf Filtration Systems Inc. (Desktop Metal, Inc.)
• Inventors: El-Siblani, Ali, Shkolnik, Alexandr
• Primary Examiner(s): Daniels, Matthew
• Assistant Examiner(s): Hohenbrink, Jr., Lawrence D
• Application Number:
  US14/680,484
• Publication Number:
  US 20160297141A1
• Time in Patent Office: 1,057 Days
• Field of Search: 4251744, 425375, 264401, 264494
• CPC Class Codes: B29C 64/135 the energy source being concentrated, e.g. scanning lasers or focused light sources
• CPC Class Codes: B33Y 30/00 Apparatus for additive manufacturing; Details thereof or accessories therefor
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing

Abstract

An apparatus and method for making a three-dimensional object from a solidifiable material using a linear solidification device with a vacuum blade is shown and described. In certain examples, the vacuum blade travels at a fixed distance relative to the linear solidification device as the linear solidification device travels along a travel axis. In other examples, the linear solidification device and the vacuum blade travel along the travel axis independently of one another.

Claims

1. A method of making a three-dimensional object from a solidifiable material, comprising:

first traversing a linear solidification device and a blade along a first travel direction along a travel axis while the linear solidification device scans solidification energy onto an exposed surface of the solidifiable material along a scanning axis, wherein during the first traversing step, the blade remains spaced apart from the linear solidification device by a fixed distance in a first blade spacing direction along the travel axis;

second traversing the linear solidification device and the blade along a second travel direction along the travel axis, wherein during the second traversing step, the blade remains fixed apart from the linear solidification device by the fixed distance in a second blade spacing direction along the travel axis, wherein the second blade spacing direction is opposite the first blade spacing direction; and

traversing the linear solidification device along the travel axis relative to the blade.

2. The method of claim 1, wherein the first blade spacing direction is in the first travel direction, and the second blade spacing direction is in the second travel direction.

3. The method of claim 1, wherein the first blade spacing direction is in the second travel direction, and the second blade spacing direction is in the first travel direction.

4. The method of claim 1, further comprising engaging the blade or a blade support member with an engagement surface.

5. The method of claim 4, wherein the step of engaging the blade or the blade support member with an engagement surface is performed after the first traversing step and before the second traversing step.

6. The method of claim 1, wherein the step of traversing the linear solidification device along the travel axis relative to the blade comprises traversing the linear solidification device in the second travel direction while exerting a releasable locking force in the first travel direction against the blade or a blade support member until the linear solidification device is spaced apart from the blade by the fixed distance in the second travel direction along the travel axis.

7. The method of claim 1, wherein the step of traversing the linear solidification device along the travel axis relative to the blade comprises adjusting a flow of hydraulic or pneumatic actuator fluid.

8. The method of claim 1, wherein the step of traversing the linear solidification device along the travel axis relative to the blade comprises energizing a solenoid.

9. The method of claim 1, further comprising adjusting a position of a level compensator in the solidifiable material along a build axis to control a height of the exposed surface of the solidifiable material along the build axis.

10. The method of claim 1, further comprising adjusting a position of a level compensator in the solidifiable material along a build axis to control a distance between the exposed surface of the solidifiable material and the blade along the build axis.