Gear Tooth Flank Grinding Coolant Routing at the Meshing Portion
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Solution Overview
Problem
The existing coolant supply method for gear grinding machines, where coolant is supplied from above in the axial direction, results in most coolant being scattered around the gear workpiece, leading to insufficient lubrication and cooling, which can cause overheating and affect grinding accuracy, necessitating a larger machine size to accommodate increased coolant usage.
Innovation Solution
The coolant is supplied from the trailing side in the rotation direction of the gear workpiece through a space between the gear workpiece and the grindstone tool, using a discharge port located on the meshing start side, allowing the coolant to be effectively drawn into the meshing portion by the rotation of the gear workpiece and grindstone tool, reducing waste and ensuring sufficient lubrication and cooling with a smaller coolant supply mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If coolant is supplied from above in the axial direction of the gear workpiece, then the coolant supply mechanism is simpler in structure, but most of the coolant is scattered around the gear workpiece resulting in insufficient lubrication and cooling at the meshing portion
Solution Approach 1:
The coolant supply direction is changed from the axial direction to the radial direction, specifically from the trailing side of the gear workpiece toward the meshing portion. This dimensional change in coolant delivery allows the coolant to reach the meshing area effectively without requiring complex supply mechanisms, resolving the contradiction between structural simplicity and grinding accuracy.
2Manufacturing precision
If a relatively large amount of coolant is supplied to ensure sufficient lubrication at the meshing portion, then grinding accuracy is maintained, but the coolant supply mechanism increases in size and requires larger installation area
Solution Approach 1:
The gear workpiece itself serves as the delivery mechanism for the coolant. By supplying coolant from the trailing side, the rotation of the gear workpiece naturally transports the coolant to the meshing portion, eliminating the need for large-scale coolant supply mechanisms and reducing the required installation area while maintaining adequate lubrication.
3Volume of stationary object
If coolant is supplied from above in the axial direction, then the coolant supply system occupies less space, but the amount of coolant reaching the meshing portion decreases leading to overheating
Solution Approach 1:
Instead of supplying coolant from the leading side or axially from above, the coolant is supplied from the trailing side of the gear workpiece. This inverted approach allows the coolant to be carried by the rotation of the gear workpiece directly to the meshing portion, ensuring effective cooling and lubrication while maintaining a compact coolant supply mechanism.
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 reduces coolant waste, decreases the size of the gear grinding machine, and lowers power consumption by using less coolant, resulting in a more compact and energy-efficient machine that occupies less space, while maintaining high grinding accuracy and efficiency.
Implementation Method 1
the coolant is drawn into the meshing portion by the rotation of the gear workpiece and the movement of the thread in the axial direction of the grindstone tool, which is caused by the rotation of the grindstone tool
Data Source
AI summary
A gear grinding machine uses a grindstone tool, having an outer circumference that includes a thread, to grind a tooth surface of a gear workpiece. In this case, coolant is supplied toward the tooth surface from a trailing side in a rotation direction of the gear workpiece through a space between the grindstone tool and the gear workpiece. The coolant is drawn into the meshing portion between the grindstone tool and the gear workpiece by the rotation of the gear workpiece and the movement of the thread of the grinding tool.