Method, data processing device, and machine tool for generating dimensional tool paths and control signals for material dispositioning

Patent metadata

Field	Value
Publication number	US-10889098-B2
Application number	US-201715484382-A
Country	US
Kind code	B2
Filing date	Apr 11, 2017
Priority date	Apr 15, 2016
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A method for generating control data is a method for generating control data for manufacturing a product having a designated shape using an additive manufacturing technology. The control data includes a path of a nozzle for supplying a material. The method for generating the control data includes: determining a cutting path for cutting the designated shape by a tool; and determining the path of the nozzle by reproducing the cutting path temporally reversely.

First claim

What is claimed is:

1. A method for generating control data for manufacturing a product having a designated shape using an additive manufacturing technology, the control data including a path of a nozzle for supplying a material,
the method for generating the control data comprising:
generating shape data of the designated shape to form a virtual stock corresponding to the product;
determining a cutting path for a virtual cutting of the virtual stock having the designated shape by a tool until the virtual stock is finally formed into only chips;
calculating an amount of the chips removed from the virtual stock by the virtual cutting along the cutting path by determining an amount of an overlapped range between the tool and the virtual stock;
determining the path of the nozzle for implementing the additive manufacturing technology along the path of the nozzle based on the cutting path by temporally reversely reproducing the cutting path; and
determining at least one of a motion speed of the nozzle, an amount of supply of the material, and an output of laser emitted to the material based on the amount of the chips removed from the virtual stock.

2. The method for generating the control data according to claim 1 , wherein in determining the path of the nozzle, the path of the nozzle is determined such that a position irradiated with the laser coincides with a position of an edge of the tool in the cutting path.

3. The method for generating the control data according to claim 1 , wherein
the cutting path is generated using CAM (Computer Aided Manufacturing), and
the path of the nozzle is determined using a program incorporated in the CAM.

4. The method for generating the control data according to claim 1 , wherein the designated shape is columnar.

5. An data processing device for generating control data for manufacturing a product having a designated shape using an additive manufacturing technology, the control data including a path of a nozzle for supplying a material,
the data processing device comprising:
a generating unit configured to generate shape data of the designated shape to form a virtual stock corresponding to the product;
a first determination unit configured to determine a cutting path for a virtual cutting of the virtual stock having the designated shape by a tool until the virtual stock is finally formed into only chips;
a calculating unit configured to calculate an amount of the chips removed from the virtual stock by the virtual cutting along the cutting path by determining an amount of an overlapped range between the tool and the virtual stock;
a second determination unit configured to determine the path of the nozzle for implementing the additive manufacturing technology along the path of the nozzle based on the cutting path by temporally reversely reproducing the cutting path; and
a third determination unit configured to determine at least one of a motion speed of the nozzle, an amount of supply of the material, and an output of laser emitted to the material based on the amount of the chips removed from the virtual stock.

6. The data processing device according to claim 5 , wherein the second determination unit is configured to determine the path of the nozzle such that a position irradiated with the laser coincides with a position of an edge of the tool in the cutting path.

7. The data processing device according to claim 5 , wherein
the data processing device is configured to generate the cutting path using CAM (Computer Aided Manufacturing), and
the second determination unit is configured to determine the path of the nozzle using a program incorporated in the CAM.

8. A machine tool capable of implementing an additive manufacturing technology, the machine tool comprising:
a control unit configured to generate control data for manufacturing a product having a designated shape using the additive manufacturing technology, the control data including a path of a nozzle for supplying a material, the control unit including:
a generating unit configured to generate shape data of the designated shape to form a virtual stock corresponding to the product;
a first determination unit configured to determine a cutting path for a virtual cutting of the virtual stock having the designated shape by a tool until the virtual stock is finally formed into only chips;
a calculating unit configured to calculate an amount of the chips removed from the virtual stock by the virtual cutting along the cutting path by determining an amount of an overlapped range between the tool and the virtual stock;
a second determination unit configured to determine the path of the nozzle for implementing the additive manufacturing technology along the path of the nozzle based on the cutting path by temporally reversely reproducing the cutting path; and
a third determination unit configured to determine at least one of a motion speed of the nozzle, an amount of supply of the material, and an output of laser emitted to the material based on the amount of the chips removed from the virtual stock.

9. The machine tool according to claim 8 , wherein the second determination unit is configured to determine the path of the nozzle such that a position irradiated with the laser coincides with a position of an edge of the tool in the cutting path.

10. The machine tool according to claim 8 , wherein
the machine tool is configured to generate the cutting path using CAM (Computer Aided Manufacturing), and
the second determination unit is configured to determine the path of the nozzle using a program incorporated in the CAM.

Assignees

• Machine Tool Tech Research Foundation
• Dmg Mori Co Ltd

Inventors

• Yamazaki Kazuo
• Carter David
• Fujishima Makoto
• Oda Yohei

Classifications

• B29C64/153 Primary

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

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• Y02P90/02

  Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] · CPC title

• G05B19/4099

  Surface or curve machining, making three-dimensional [3D] objects, e.g. desktop manufacturing · CPC title

• B29C64/188

  involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control (surface shaping B29C59/00; after-treatment of articles without altering their shape B29C71/00) · CPC title