Precision Surface Finishing of Semi-Finished Parts Using Abrasive Liquid Jets

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This invention describes a process for removing material from the surface of a semi-finished product using a liquid-abrasive jet directed through a nozzle. Both the nozzle and the surface are surrounded by a liquid medium. The process enables more homogeneous and precisely controlled material removal, and allows a wider variety of surface geometries to be created. The system includes numerical control of the relative movement between the nozzle and the semi-finished product surface.

Use CasesContent extracted from patent full text and abstract with AI.

• Precision surface finishing of metal, plastic, or ceramic components in manufacturing.
• Controlled etching or shaping in aerospace or automotive part fabrication.
• Fabrication of microstructures or complex shapes on medical device surfaces.
• Cleaning or deburring of machine parts without thermal or mechanical stress.
• Surface preparation for coatings or bonding in electronics manufacturing.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables very uniform and precisely controlled material removal.
• Allows for flexible and programmable control of the process via numerical axes.
• Expands the range of possible surface geometries that can be produced.
• Reduces risk of thermal or mechanical damage to sensitive components.
• Can be integrated into automated or robotic manufacturing lines for high efficiency.

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Patent Abstract

The invention relates to a method for material removal from a semi-finished product surface, wherein a liquid-abrasive jet is directed onto the semi-finished product surface via a jet nozzle, with the jet nozzle and the semi-finished product surface being surrounded by a bearing liquid. The object of the invention is to propose a method for material removal from a surface in which more homogeneous and flexibly controllable material removal is possible. Furthermore, a broader spectrum of producible geometric shapes on the machined surface is to be enabled. This object is achieved in that a liquid-abrasive suspension is first formed in a high-pressure mixing chamber (8) from a liquid carrier medium and abrasive particles (9), and this liquid-abrasive suspension (12) is subsequently guided in a flow system to the jet nozzle (11) and accelerated at this toward the semi-finished product surface (1), and in that the jet nozzle and the semi-finished product surface (1) are moved relative to one another via at least one numerically controlled axis. Furthermore, a device for carrying out the method is proposed (Fig. 1).