Method for machining tooth edges and machining station designed for this purpose
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Solution Overview
Problem
Existing methods for processing tooth edges in gear machining often result in burrs that can cause damage and safety hazards, and alternative methods like chamfering may introduce secondary burrs that complicate subsequent machining processes.
Innovation Solution
A method involving a machining tool with a skewed axis arrangement relative to the gear axis, utilizing an axis cross angle and inclination angle to create a cutting mechanism that allows for efficient removal of burrs and chamfering of tooth edges, with adjustable kinematics and cutting speeds to optimize machining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a chamfering wheel is used to plastically form the tooth edge, then the tooth edge is formed into a chamfer, but secondary burrs are created that complicate subsequent machining
Solution Approach 1:
The patent replaces the plastic forming mechanism (chamfering wheel) with a cutting mechanism (cylindrical machining tool with cutting edges). This substitution eliminates the secondary burr problem inherent in plastic forming while achieving the desired chamfer shape through material removal rather than displacement.
Solution Approach 2:
The invention extracts and removes the harmful secondary burrs through the cutting action of the machining tool. By using cutting edges that engage with the tooth edge, the tool removes material including any secondary burrs in a single operation, preventing them from interfering with subsequent hard machining processes.
2Object-generated harmful factors
If only the burr is removed without working on the tooth edge, then the burr is eliminated, but the tooth edge becomes glass hard during hardening and may break off under load
Solution Approach 1:
The patent applies preliminary action by machining the tooth edge with a chamfer before hardening. This preliminary chamfering creates a stress-relieving geometry that prevents the tooth edge from becoming glass hard during subsequent hardening processes, thereby preventing breakage under load while also removing burrs.
3Ease of operation
If the end face is used as a clamping surface, then clamping is simplified, but the planarity is disturbed by burrs
Solution Approach 1:
The invention performs preliminary chamfering of the tooth edges before the end face is used as a clamping surface. This preliminary action removes burrs that would otherwise disturb the planarity of the end face, ensuring that the clamping surface maintains its required precision while still providing ease of clamping operation.
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 effectively eliminates burrs and chamfers tooth edges with high cutting speeds, reducing the risk of damage and safety hazards while minimizing tool wear and processing time, and can be adapted for various gear shapes and sizes.
Implementation Method 1
a substantially cylindrical machining tool that has at least one cutting edge is clamped on a tool spindle. After radial infeed, a chamfer is created on the tooth edges of the toothing by machining intervention of this chamfering tool
Data Source
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AI summary
The invention relates to a method for machining the tooth edges between the end faces and the tooth flanks of a tooth gearing, wherein the machining tool is toothed and for the purpose of stock removal rotates about its tooth gearing axis and is brought into rolling engagement with the tooth gearing to be machined at a non-null crossed-axes angle between the axes of rotation of the machining tool and the tooth gearing to be machined.