Three-dimensional laminating and shaping apparatus, control method of three-dimensional laminating and shaping apparatus, and control program of three-dimensional laminating and shaping apparatus

Patent metadata

Field	Value
Publication number	US-10456983-B2
Application number	US-201615125499-A
Country	US
Kind code	B2
Filing date	Mar 25, 2016
Priority date	Mar 25, 2016
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A three-dimensional laminating and shaping apparatus capable of measuring the quality of a three-dimensional laminated and shaped object in real time during shaping of the three-dimensional laminated and shaped object includes a material ejector that ejects the material of the three-dimensional laminated and shaped object onto a shaping table on which the three-dimensional laminated and shaped object is shaped, a light beam irradiator that irradiates the ejected material with a light beam, a data acquirer that acquires monitoring data used to monitor a shaping state of the three-dimensional laminated and shaped object during shaping of the three-dimensional laminated and shaped object, and a shaping quality estimator that estimates shaping quality of the three-dimensional laminated and shaped object based on the monitoring data.

First claim

The invention claimed is:

1. A three-dimensional laminating and shaping apparatus comprising:
a material ejector that ejects a material of a three-dimensional laminated and shaped object onto a shaping table on which the three-dimensional laminated and shaped object is shaped;
a light beam irradiator that irradiates the ejected material with a light beam;
a data acquirer that acquires monitoring data used to monitor a shaping state of the three-dimensional laminated and shaped object during shaping of the three-dimensional laminated and shaped object; and
a shaping quality estimator that estimates shaping quality of the three-dimensional laminated and shaped object based on the monitoring data,
wherein said monitoring data includes a diameter of a molten pool and a property data of a light from the molten pool,
wherein said shaping quality estimator estimates a decreasing of the shaping quality of the three-dimensional laminated and shaped object from a combination of whether the diameter of the molten pool has been changed or not and whether the property data of the light from the molten pool has been changed or not, when at least one of the diameter of the molten pool and the property data of the light from the molten pool has been changed.

2. The three-dimensional laminating and shaping apparatus according to claim 1 , further comprising a shaping parameter estimator that estimates a shaping parameter necessary for the shaping of the three-dimensional laminated and shaped object based on the monitoring data,
wherein said shaping parameter estimator estimates the shaping parameter necessary for the shaping of the three-dimensional laminated and shaped object from the combination of the change of the diameter of the molten pool and the change of the property data of the light from the molten pool.

3. The three-dimensional laminating and shaping apparatus according to claim 1 , further comprising a shaping parameter controller that controls the shaping parameter necessary for the shaping of the three-dimensional laminated and shaped object based on a change of the shaping quality of the three-dimensional laminated and shaped object estimated by said shaping quality estimator.

4. The three-dimensional laminating and shaping apparatus according to claim 3 , wherein said shaping parameter controller controls the shaping parameter necessary for the shaping of the three-dimensional laminated and shaped object based on the monitoring data acquired by said data acquirer.

5. The three-dimensional laminating and shaping apparatus according to claim 1 , wherein the monitoring data includes at least one of, a reflected light level and a plasma light wavelength, as the property data of the light from the molten pool.

6. The three-dimensional laminating and shaping apparatus according to claim 2 , wherein the shaping parameter includes at least one of a material supply amount, a shield gas supply amount, a light beam output, and a material purity.

7. The three-dimensional laminating and shaping apparatus according to claim 1 , wherein the shaping quality includes at least one of a layer height of the three-dimensional laminated and shaped object, a layer width of the three-dimensional laminated and shaped object, and a material composition of the three-dimensional laminated and shaped object.

Assignees

• Tech Res Association Future Additive Manufacturing

Inventors

• Niitani Haruhiko

Classifications

• B22F12/90

  Means for process control, e.g. cameras or sensors · CPC title

• B22F10/30

  Process control · CPC title

• B22F10/25

  Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title

• B23K26/342

  Build-up welding · CPC title

• B29C64/393 Primary

  for controlling or regulating additive manufacturing processes · CPC title