Sintered Part Radial Precision via Calibration Deformation
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Solution Overview
Problem
Current methods for producing sintered parts with high radial precision often require additional machining steps like grinding, turning, or drilling, which increase production complexity and cost.
Innovation Solution
A method involving the joining of sintered parts using radial deformation elements, where these elements are deformed using a calibration tool to achieve precise radial accuracy, potentially eliminating the need for further machining by ensuring dimensional accuracy through plastic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional machining steps (grinding, turning, milling, drilling) are performed after calibration to achieve high dimensional accuracy, then manufacturing precision is improved, but device complexity and production cost increase
Solution Approach 1:
The invention applies preliminary action by performing calibration under high pressure before any machining operations to establish the base dimensional accuracy. The calibration die is designed with precision-ground reference surfaces that pre-establish the coordinate system and dimensional references, eliminating the need for subsequent reference-establishing machining steps.
Solution Approach 2:
The invention merges the calibration process with the coordinate system establishment process. By integrating the calibration die with precision-ground reference surfaces into a single fixture, the patent combines multiple functions (calibration, reference establishment, and positioning) into one unified device, thereby reducing the total number of separate machining operations required.
2Manufacturing precision
If additional machining steps are performed after calibration to achieve high dimensional accuracy, then manufacturing precision is improved, but production time increases
Solution Approach 1:
The calibration step is performed as a preliminary action before any machining operations. By establishing dimensional accuracy through calibration first, the patent eliminates the need for time-consuming post-calibration machining steps, thereby reducing total production time while maintaining high precision.
Solution Approach 2:
The invention skips the traditional sequential process of machining then calibrating by reversing the order: calibration is performed first under high pressure to establish accuracy, then machining is performed on the already-calibrated workpiece. This allows the process to rush through to final precision without requiring multiple iterative machining-calibration cycles.
3Manufacturing precision
If calibration is performed under high pressure in a calibration die to improve dimensional accuracy, then manufacturing precision is improved, but the process complexity increases
Solution Approach 1:
The calibration die is designed as a universal fixture that performs multiple functions: it provides calibration under high pressure, establishes the coordinate system through precision-ground reference surfaces, and positions the workpiece for subsequent machining operations. This multi-functionality reduces the need for separate specialized devices for each operation.
Solution Approach 2:
The calibration die acts as an intermediary device that transfers precision from its own precision-ground reference surfaces to the workpiece during calibration. This intermediary fixture mediates between the machining equipment and the workpiece, ensuring accurate dimensional transfer without requiring complex direct measurement and adjustment procedures.
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
The method enables the production of sintered parts with high radial precision, reducing the need for additional machining steps and improving production efficiency by achieving tolerances of less than +/-0.015 mm, thus enhancing the radial precision and reducing production time and material intensity.
Implementation Method 1
The deformation of the radial deformation element takes place at least substantially as a plastic deformation of the radial deformation element
Data Source
AI summary
The invention relates to a method for producing a sintered part with a high radial precision. The sintered part is made of at least one first joining part to be sintered and a second joining part to be sintered, and the method has at least the following steps: joining the first joining part with the second joining part, and bringing about the high radial precision, having a step of deforming at least one radial deformation element which is preferably positioned so as to adjoin a joint contact zone, wherein the deformation of the radial deformation element is caused at least by means of a calibration tool and is carried out at least substantially as a plastic deformation of the radial deformation element. The invention further relates to a set of parts for joining the joining parts to be sintered into a sintered part with a high radial precision.