High-Pressure Liquid Jet Deburring in Cleaning Bath
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Solution Overview
Problem
Existing industrial deburring methods for machined workpieces, particularly in the automotive industry, face challenges in achieving efficient and cost-effective removal of burrs on complex geometries and internal contours, with high-pressure liquid jet deburring systems often requiring costly setups and high energy consumption.
Innovation Solution
A modular high-pressure liquid jet deburring installation that submerges the workpiece and the high-pressure jet nozzle in a cleaning liquid bath, allowing for effective deburring without gas sheathing, which simplifies construction, reduces energy consumption, and enhances deburring efficiency by utilizing a stationary high-pressure jet nozzle with a wide aperture angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If high-pressure liquid jet deburring is performed in air or with gas sheathing, then jet effectiveness is maintained, but energy consumption increases and construction complexity increases
Solution Approach 1:
The patent changes the physical state parameter of the surrounding medium from gas (air or gas sheath) to liquid (water or water-gas mixture). This parameter change allows the jet to operate effectively without gas sheathing, reducing energy consumption while maintaining deburring effectiveness through the liquid medium's ability to transmit and focus jet energy.
Solution Approach 2:
The patent extracts and eliminates the gas sheathing component from the deburring system. By performing deburring directly in a liquid medium without requiring a gas envelope to protect or guide the jet, the system simplifies construction while maintaining jet effectiveness through the liquid's inherent properties.
2Ease of manufacture
If high-pressure liquid jet deburring is performed with gas sheathing, then jet protection is provided, but device complexity increases
Solution Approach 1:
The patent removes the gas sheathing subsystem entirely, replacing it with direct immersion in liquid medium. This extraction eliminates the complexity of gas supply circuits, sheathing nozzles, and control systems while the liquid medium itself provides the necessary jet support and deburring environment.
Solution Approach 2:
The patent transitions from pneumatic (gas sheathing) to hydraulic (liquid medium) principles. By using liquid instead of gas as the primary medium, the system eliminates complex pneumatic components and utilizes the simpler hydraulic properties of liquid to achieve jet stability and deburring effectiveness.
3Productivity
If high supply pressure is used for deburring, then deburring effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent changes the medium parameter from gas to liquid, which fundamentally alters the energy transmission characteristics. The liquid medium allows for more efficient energy transfer from the jet to the workpiece, achieving effective deburring at lower supply pressures compared to gas-based systems, thus reducing energy consumption while maintaining productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly improves deburring efficiency and reduces energy consumption by maintaining jet effectiveness and minimizing wear, while allowing for a more cost-effective and modular installation design suitable for complex geometries and internal contours.
Implementation Method 1
a machined workpiece, from which burr is to be removed, is subjected to high-pressure/high-speed liquid jet (e.g. at 1000bar) for deburring said workpiece by the cutting action of the liquid jet
Implementation Method 2
The deburring receptacle according to DE 10 2006 039 035 has a pulverization nozzle connected to a liquid supply circuit for creating a mist of sprayed droplets (aerosol) inside the receptacle
Implementation Method 3
high-pressure pumps (which, in known industrial installations can attain up to 500 kW)
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A method and an installation for high-pressure liquid jet deburring are proposed, in which a machined workpiece (44) is deburred by means of a high-pressure/high-speed liquid jet from a high-pressure jet nozzle (30) that is connected to a high-pressure liquid circuit (32). According to the invention, the deburring receptacle (16) has a flooding inlet (48) connected to a liquid supply circuit for flooding the deburring receptacle (16) with cleaning liquid and is configured to contain a bath (46) of cleaning liquid during operation. Prior to deburring, the deburring receptacle (16) is flooded with cleaning liquid via a flooding inlet (48) of the deburring receptacle. Further according to the invention, the machined portion (44) is deburred after flooding and by means of a liquid jet without gas sheath such that the high-pressure/high-speed liquid jet and at least the machined portion are immersed in a bath of cleaning liquid during deburring.