Interchangeable Deburring Tool with Integrated High-Pressure Pump
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Solution Overview
Problem
Conventional machine tools are unable to generate the high pressures required for high-pressure deburring, as their tool spindles are not suited for pressures above 150 bar, limiting the effectiveness of deburring processes and posing risks to workpieces due to imprecise nozzle positioning.
Innovation Solution
An interchangeable deburring tool with a high-pressure generating device is integrated into the tool spindle, capable of increasing coolant pressure from 70 bar to 300-800 bar, allowing precise nozzle positioning and eliminating the need for specialized machines, with options including radial piston pumps, hydraulic pressure boosters, and turbine systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If conventional tool spindles are used with standard coolant supply pressure, then the machine tool can operate with standard components, but the pressure is insufficient for effective high-pressure deburring
Solution Approach 1:
The patent combines the coolant supply system and high-pressure generation into a single integrated deburring tool. The high-pressure pump is built into the tool body, merging the functions of coolant delivery and pressure generation, eliminating the need for separate pressure generation equipment while achieving the required 300-800 bar pressure for effective deburring.
Solution Approach 2:
The deburring tool generates its own high pressure using an integrated pump system that draws coolant from the machine's standard coolant supply and pressurizes it internally. The tool serves itself by containing both the low-pressure inlet and high-pressure outlet systems within its structure, making the pressure generation self-contained.
2Stress or pressure
If a separate high-pressure deburring machine is used, then sufficient pressure can be achieved, but additional equipment investment and space requirements increase
Solution Approach 1:
The patent creates a universal tool that can perform both standard machining operations and high-pressure deburring using the same tool spindle interface. The interchangeable tool design allows the machine tool to serve multiple functions - cutting/milling with standard tools and deburring with the specialized tool - eliminating the need for separate dedicated deburring equipment.
Solution Approach 2:
The high-pressure generation system is nested within the deburring tool structure. The pump, coolant channels, and nozzle system are all contained within the single tool body, which then interfaces with the standard tool spindle. This nested arrangement packs the complex pressure generation system into a compact form that fits within existing machine tool capabilities.
3Measurement precision
If the deburring nozzle is positioned by separate high-pressure deburring machinery, then pressure can be maintained, but positioning precision relative to the workpiece decreases
Solution Approach 1:
The patent merges the positioning system and pressure delivery system into a single integrated tool. Since the tool is mounted on the machine tool's precise positioning system (CNC-controlled spindle), the nozzle position is automatically and precisely positioned relative to the workpiece while maintaining high pressure, eliminating the positioning errors that occur with separate deburring machines.
4Device complexity
If standard coolant supply systems are used, then the machine tool structure remains simple, but the pressure cannot be increased to required levels
Solution Approach 1:
The patent extracts the pressure generation function from the standard coolant supply system and places it within the deburring tool itself. The machine tool's coolant supply remains simple and unchanged, providing low-pressure coolant to the tool, while the tool contains the high-pressure pump that extracts and pressurizes the coolant to the required 300-800 bar levels.
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 solution enables precise and effective high-pressure deburring without the need for additional machinery, reducing workpiece damage and operational costs, while ensuring safety by containing any leaks within the machine's working space.
Implementation Method 1
the high-pressure generation device (23) increases the coolant (9) supplied via the internal coolant supply (8) at approx. 70 bar to the high pressure of 300 to 800 bar required for high-pressure deburring
Implementation Method 2
via which a deburring liquid is directed under high pressure onto the workpiece (5) to be deburred
Data Source
Figure 1
Figure 2
AI summary
The deburring tool (20) has a deburring nozzle (22), over which a deburring liquid is directed on the workpiece to be deburred. The deburring tool is formed as a changeover tool for a tool spindle (3) of a machine tool. The tool spindle has a cooling liquid supply (8). The deburring tool has a high-pressure generator (23) that increases the cooling liquid (9) on a high pressure, where the cooling liquid is supplied over the tool spindle.