Method for generating control data, data processing device, machine tool and program

By reversing the removal path from subtractive machining simulations to determine the tool path for nozzle movement, the method optimizes additive manufacturing processes, resulting in higher-quality products with enhanced precision and efficiency.

DE102017206456B4Active Publication Date: 2025-07-31DMG MORI CO LTD +1
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Patent Information

Application Number
DE102017206456
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2016-06-28
Filing Date
2017-04-13
Publication Date
2025-07-31
Estimated Expiration
2037-04-13

AI Technical Summary

Technical Problem

Existing additive manufacturing technologies face challenges in determining an optimal tool path for nozzle movement to achieve desired shapes, particularly in three-dimensional applications, leading to difficulties in achieving precise and efficient material deposition.

Method used

A method is developed to generate control data for additive manufacturing by determining a tool path for a nozzle that includes reversing the removal path from a subtractive machining simulation, optimizing parameters such as nozzle movement, powder supply, and laser power to ensure accurate and efficient material deposition.

Benefits of technology

This approach allows for the generation of high-quality products with improved surface roughness and dimensional accuracy by synchronizing nozzle movement, powder supply, and laser power, reducing the need for post-processing and enhancing the overall manufacturing process.

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Abstract

A method for generating control data for manufacturing a product having a specified shape using additive manufacturing technology, the control data including a path (Pn) of a nozzle for supplying a material, the method for generating the control data comprising: determining a removal path (Pt) for removing the specified shape by a tool; and determining the path (Pn) of the nozzle by reproducing the removal path (Pn) in reverse time.
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Claims

[1] A method for generating control data for manufacturing a product having a predetermined shape using an additive manufacturing technology, the control data including a path (Pn) of a nozzle for supplying a material, the method for generating the control data comprising: Determining a removal path (Pt) for removing the specified shape by a tool; and Determining the path (Pn) of the nozzle by reproducing the removal path (Pn) in reverse time. [2] A method for generating the control data according to claim 1, further comprising determining a moving speed of the nozzle and a feed amount of the material and / or a power output of the laser emitted to the material when the additive manufacturing technology is implemented along the path (Pn) of the nozzle. [3] A method for generating the control data according to claim 2, wherein determining the removal path (Pt) comprises calculating an amount of raw material that is removed from the specified shape by removal along the removal path (Pt), and the movement speed and the feed rate and / or the power output of the laser are determined based on the amount of raw material removed. [4] A method for generating the control data according to claim 2 or 3, wherein in determining the path (Pn) of the nozzle, the path (Pn) of the nozzle is determined such that a position irradiated with the laser coincides with the position of an edge of the tool in the removal path (Pt). [5] A method for generating the control data according to any one of claims 1 to 4, wherein the removal path (Pt) is generated using CAM (computer-aided manufacturing) and the path (Pn) of the nozzle is determined using a program integrated in the CAM. [6] A data processing device (11) for generating control data for manufacturing a product having a predetermined shape using an additive manufacturing technology, the control data including a path (Pn) of a nozzle for supplying a material, the data processing device (11) comprising: a first determination unit (140) configured to determine a removal path (Pt) for removing the specified shape by a tool; and a second determination unit (121) configured to determine the path (Pn) of the nozzle by reproducing the removal path (Pt) in reverse time. [7] Machine tool (1) capable of implementing an additive manufacturing technology, the machine tool (1) comprising: a control unit (120) configured to generate control data for manufacturing a product having a specified shape using the additive manufacturing technology, wherein the control data includes a path (Pn) of a nozzle for supplying a material, wherein the control unit (120) comprises a first determination unit (140) configured to determine a removal path (Pt) for removing the specified shape by a tool; and a second determination unit (121) configured to determine the path (Pn) of the nozzle by reproducing the removal path (Pt) in reverse time. [8] A program for generating control data for manufacturing a product having a predetermined shape using additive manufacturing technology, the control data including a path (Pn) of a nozzle for feeding a material, the program causing a processor of a data processing device having the program stored therein to execute: Determining a removal path (Pt) for removing the specified shape by a tool; and Determining the path (Pn) of the nozzle by reproducing the removal path (Pn) in reverse time.

Citation Information

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