Apparatus and method for generative production of a component

Patent metadata

Field	Value
Publication number	US-9943907-B2
Application number	US-201514628402-A
Country	US
Kind code	B2
Filing date	Feb 23, 2015
Priority date	Feb 28, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

An apparatus and method for the generative production of a component includes a movably dispensing structure for the disposal of a starting material layer; a bonding device, such as a laser, for the local bonding of this starting material layer to a cross section of the component being produced; a platform for supporting the component being produced, which can be displaced counter to a direction of layer buildup in a motor-driven manner; a position sensing device for sensing a position or change in position, such as vibration, of the platform in the direction of layer buildup with the capability of sensing interference as to whether the movement of the dispensing structure is not free of interference on the basis of the sensed position or change in position.

First claim

What is claimed is:

1. A method for the generative production of a component, comprising the steps of:
disposal of a material layer by movement of a dispensing device;
local bonding of the material layer to a cross section of the component being produced; and
displacement of a platform supporting the component being produced counter to a direction of layer buildup;
sensing the position and change in position of the platform by scanning the position of the platform over time in the direction of layer build up;
determining whether the movement of the dispensing device is not free of interference with the component being produced based on the sensed position or change in position of the platform in the direction of layer buildup; and
triggering a response based on the determination of whether the movement of the dispensing device is not free of interference.

2. The method according to claim 1 , wherein the position or change in position during the movement of the dispensing device is sensed.

3. The method according to claim 1 , wherein the position or change in position is sensed at a scanning frequency of at least 0.5 kHz.

4. The method according to claim 1 , wherein the position or change in position is sensed optically or electrically.

5. The method according to claim 1 , wherein any interference in the movement of the dispensing device is sensed when it is sensed that a parameter that depends on the sensed position or change in position, is outside of an admissible range that can be specified and/or determined empirically beforehand.

6. The method according to claim 1 , wherein a response is triggered when any interference in the movement of the dispensing device is sensed, the response selected from the group consisting of an interruption or slowing of the movement of the platform, a displacement of the platform, and an emitting of an alarm signal.

7. The method according to claim 1 , wherein the displacement of the platform counter to the direction of layer buildup is regulated and/or controlled, on the basis of the sensed position or change in position.

8. An apparatus for the generative production of a component, comprising:
a movable dispensing device configured for the disposal of a starting material layer;
a bonding device configured for the local bonding of this starting material layer to a cross section of the component being produced;
a platform configured for supporting the component being produced, which can be displaced counter to a direction of layer buildup;
a position sensing device configured for sensing a position and change in position of the platform by scanning the position of the platform over time in the direction of layer buildup; and
an interference sensing device configured for sensing whether the movement of the dispensing device is not free of interference with the component being produced on the basis of the sensed position or change in position of the platform, the interference sensing device configured and arranged to trigger a response based on the determination of whether the movement of the dispensing device is not free of interference.

9. The apparatus according to claim 8 , wherein the position sensing device is configured for sensing the change in position during the movement of the dispensing device.

10. The apparatus according to claim 8 , wherein the position sensing device configured for sensing the position or change in position is configured with a scanning frequency of at least 0.5 kHz.

11. The apparatus according to claim 8 , wherein the position sensing device is configured for optical or electrical sensing of the position or change in position of the platform.

12. The apparatus according to claim 8 , wherein the interference sensing device is configured to sense an interference of the movement of the dispensing device when it is sensed that a parameter that depends on the sensed position or change in position, lying outside of an admissible range that can be specified and/or determined empirically beforehand.

13. The apparatus according to claim 8 , wherein the interference sensing device is configured to trigger a response of an interruption or slowing of movement, a displacement of the platform, and/or an emitting of an alarm signal when any interference in the movement of the dispensing device is sensed.

14. The apparatus according to claim 8 , wherein the position sensing device has a control device for regulating and/or controlling, the displacement of the platform counter to the direction of layer buildup on the basis of the sensed position or change in position.

15. The apparatus of claim 8 , wherein the bonding device is a laser.

Assignees

• MTU Aero Engines AG

Inventors

• Hess Thomas
• Ladewig Alexander
• Liebl Christian
• Schlothauer Steffen
• Jakimov Andreas
• Schlick Georg

Classifications

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• B29C64/165

  using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber · CPC title

• B22F12/90

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