Method for layered production of a component from a powdery material

Patent metadata

Field	Value
Publication number	US-11148359-B2
Application number	US-201716471631-A
Country	US
Kind code	B2
Filing date	Nov 29, 2017
Priority date	Dec 22, 2016
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

A method for the layered production of a component ( 10 ) from powdery material including loose powder particles, based on three-dimensional data of the component ( 10 ), including the method steps: the component ( 10 ) is segmented in a building direction ( 16 ) into N, N≥2 consecutive, cylindrical cross-sectional areas ( 11, 12, 13, 14, 15 ) made up of a two-dimensional cross-sectional surface and a layer thickness; N powder layers of the powdery material are applied to a building plane perpendicular to the building direction ( 16 ); the loose powder particles in the cross-sectional areas ( 11, 12, 13, 14, 15 ) of the component ( 10 ) are at least partially bonded to each other and to the underlying cross-sectional area and; loose powder particles arranged within one cross-sectional area or within multiple consecutive cross-sectional areas in the building direction ( 16 ) are at least partially removed from the component ( 10 ) during the layered production of the component ( 10 ).

First claim

The invention claimed is:

1. A method for layered production of an abrasive processing tool component from powdery material including loose powder particles, based on three-dimensional data of the component, the method comprising the steps of:
segmenting the component in a building direction into N, N≥2, consecutive, cylindrical cross-sectional areas, each cross-sectional area being formed from a two-dimensional cross-sectional surface perpendicular to the building direction and a layer thickness parallel to the building direction;
applying a first powder layer of powdery material to a building plane perpendicularly to the building direction;
at least partially bonding the loose powder particles of the first powder layer to each other in the first cross-sectional area of the component;
applying additional powder layers of the powdery material consecutively to the building plane in the building direction;
at least partially bonding the loose powder particles in the particular cross-sectional area of the component to each other and to the underlying cross-sectional area of the component in each of the additional powder layers of the powdery material;
at least partially removing the loose powder particles arranged within one cross-sectional area or within multiple consecutive cross-sectional areas in the building direction from the component during the layered production of the component, cavities for cutting elements being constructed in layers in the component; and
placing the cutting elements within the cavities during the layered production.

2. The method as recited in claim 1 wherein setting areas for cutting elements are defined in the component, and the loose powder particles of the powdery material surrounding the setting areas are bonded to each other.

3. The method as recited in claim 1 wherein material areas are defined in addition to the setting areas for the cross-sectional areas of the component including the setting areas, and further materials areas are defined for the cross-sectional areas of the component not including any of the setting areas, the loose powder particles of the powdery material in the material area and the further material areas being bonded to each other, the material areas and the further material areas delimiting the cavities for the cutting elements.

4. The method as recited in claim 1 wherein the loose powder particles of the powdery material are at least partially removed from a first cavity of the cavities when the first cavity has a necessary insert height for placing the cutting insert elements.

5. The method as recited in claim 2 wherein closed support structures for the insert elements are constructed in layers in the component, and the cutting elements are placed within the closed support structures during the layered production.

6. The method as recited in claim 5 wherein support rings are defined for the cross-sectional areas of the component including the setting areas, the support rings surrounding the setting areas.

7. The method as recited in claim 5 wherein the loose powder particles of the powdery material are at least partially removed from a first support structure of the support structures when the first support structure has a necessary insert height for placing the cutting elements.

8. The method as recited in claim 1 wherein the cutting elements include a natural material.

9. The method as recited in claim 8 wherein the natural material is diamond or corundum.

10. The method as recited in claim 9 wherein the cutting elements include a synthetic material.

11. The method as recited in claim 10 wherein the synthetic material include synthetic diamonds, high-melting carbides, borides, nitrides or silicides.

12. The method as recited in claim 1 wherein the cutting elements include metallic material.

13. The method as recited in claim 12 wherein the metallic material includes carbides, borides, nitrides and silicides of transition metals of the fourth through the sixth group of the periodic system.

14. The method as recited in claim 1 wherein the cutting elements include a non-metallic material.

15. The method as recited in claim 14 wherein the nonmetallic material includes diamond, corundum, silicon carbide or boron carbide.

16. The method as recited in claim 1 further comprising partially filling the cavities with a different material different from the powdery material, the placing of the cutting elements within the cavities including placing the cutting elements on the different material, and then completely filling the cavities with the different material to fully surround the cutting elements within the cavities.

17. The method as recited in claim 16 wherein the different material is cobalt or bronze powder.

Assignees

• Hilti Ag

Inventors

• Zivcec Maria
• Spring Robert
• Schneider Roland

Classifications

• B28B1/001 Primary

  Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material (selective deposition modelling of metallic powder B22F10/00; rapid manufacturing of 3D objects in general and in particular of plastics B29C64/00) · CPC title

• B22F10/47

  characterised by structural features · CPC title

• B22F10/10

  Formation of a green body · CPC title

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title