Medical Instrument Deburring Surface Milling for Precision Production
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Solution Overview
Problem
The production of medical instruments is hindered by shape and dimensional fluctuations due to hand-guided machining processes, and the undefined heat input from traditional belt grinding methods used to remove burrs, leading to inconsistencies in the deburring process.
Innovation Solution
The implementation of machine milling with a deburring surface oriented perpendicular to the processing plane, allowing for precise and reproducible deburring, eliminating process fluctuations and excessive heating, and enabling clear visibility of the deburring surface post-processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hand-operated belt sanding is used to remove burrs, then the deburring process can be performed, but shape and dimensional variations occur and undefined heat input is introduced
Solution Approach 1:
The patent replaces the manual mechanical belt sanding process with an automated milling process. The milling process uses a rotating cutting tool to remove burrs with precise control, eliminating the shape and dimensional variations introduced by hand-operated sanding while reducing undefined heat input through controlled material removal.
Solution Approach 2:
The patent changes the machining parameters by transitioning from belt sanding to milling with specific orientations. The deburring surface is oriented perpendicular to the instrument axis, and the machining plane is parallel to the instrument axis, creating reproducible geometric relationships that improve manufacturing precision while maintaining ease of manufacture through automated processes.
2Ease of manufacture
If hand-operated belt sanding is used to remove burrs, then the deburring process can be performed, but excessive heating of the instrument body blank occurs
Solution Approach 1:
The patent replaces the friction-based belt sanding process with a controlled milling process. The milling process removes material through controlled cutting action rather than friction, significantly reducing excessive heat generation while maintaining effective burr removal capability.
3Manufacturing precision
If machine milling is implemented with defined orientation, then manufacturing precision and reproducibility improve, but process complexity increases
Solution Approach 1:
The patent establishes specific parameter relationships: the deburring surface is oriented perpendicular to the instrument axis, and the machining plane is parallel to the instrument axis. These defined geometric parameters simplify the overall process by creating reproducible reference relationships, even though automated milling equipment is required.
Solution Approach 2:
The patent performs preliminary forming of the instrument body blank to create the basic shape with burrs, then applies the milling process to remove burrs and create the deburring surface with defined orientation. This sequential approach allows the complex milling operation to build upon a pre-formed base, managing overall process complexity.
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 method results in high-quality medical instruments with improved reproducibility and a clearly defined deburring surface, distinguishing them from those produced by hand-guided processes, while ensuring precise alignment and stability through computer-controlled milling.
Implementation Method 1
a deburring surface, created by milling, in particular by machine milling
Data Source
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AI summary
To improve the production of a medical instrument having at least one instrument body part, the at least one instrument body part being made by shaping an instrument body part blank, the invention proposes that the at least one instrument body part has at least one deburring surface formed by milling, in particular by machine milling; the at least one deburring surface comprises one or more sections; each section of the at least one deburring surface extends perpendicular to a common machining plane; a normal to the machining plane defines a deburring longitudinal axis; and the at least one deburring surface extends parallel to the deburring longitudinal axis. The invention further relates to an improved method for producing a medical instrument.