Curved Contour Grinding on Roll End Faces
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Solution Overview
Problem
Existing manufacturing processes for producing curved contours on rolling elements, such as cylindrical rolls for rolling bearings, are inefficient and costly, particularly in mass production, as they often require multiple grinding tools and lack effective retention mechanisms for precise and reliable grinding of end faces.
Innovation Solution
A manufacturing apparatus comprising a grinding device and a holding device, both formed from steel alloys, where the holding device can move linearly relative to the grinding device, ensuring secure engagement and precise grinding of the roll's end faces within a grinding channel with obliquely arranged profiles, facilitating the production of curved contours on both end faces during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional grinding processes are used for curved contours on rolling elements, then multiple grinding tools are required, but this increases device complexity and reduces productivity
Solution Approach 1:
The patent combines multiple grinding functions into a single integrated grinding device that can process both the curved contour on the rolling surface and the curved contour on the end face. The grinding device includes a rolling surface grinding tool and an end face grinding tool that work together in one operation, eliminating the need for multiple separate tools and operations.
Solution Approach 2:
The grinding device is designed with multi-functionality to perform different grinding operations. It can grind the curved contour on the rolling surface using the rolling surface grinding tool and simultaneously grind the curved contour on the end face using the end face grinding tool, making a single device capable of multiple functions.
2Manufacturing precision
If conventional retention mechanisms are used for holding the rolling element, then retention reliability is insufficient, but this leads to poor grinding precision
Solution Approach 1:
The holding device features a holding surface with locally enhanced friction properties. The holding surface is designed with a friction-promoting structure or coating that increases the friction coefficient specifically at the contact area between the holding device and the rolling element, ensuring reliable retention without affecting the overall device structure.
3Adaptability or versatility
If the holding device is stationary relative to the grinding device, then the structure is simpler, but the grinding process cannot accommodate dynamic positioning requirements
Solution Approach 1:
The holding device is designed to be movable relative to the grinding device through a linear motion mechanism. This dynamic capability allows the holding device to adjust its position along the linear guide, enabling flexible positioning of the rolling element during the grinding process and accommodating different workpiece sizes and requirements.
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 efficient and cost-effective mass production of rolls with curved end faces, increasing production rates and ensuring reliable retention and grinding precision, thereby improving the overall manufacturing efficiency compared to conventional methods.
Implementation Method 1
the holding device has a holding surface, by means of which it holds the roll and presses it against the grinding device... the holding surface is provided with a coating or a layer of material or surface structuring, e.g. knurling, which increases a friction coefficient of the holding surface
Implementation Method 2
the manufacturing apparatus comprises an actuator, e.g. a linear motor, for driving the holding device in a linear fashion relative to the grinding device
Implementation Method 3
The grinding device is designed to grind the curved contour on the at least one end face of the roll
Data Source
AI summary
A manufacturing apparatus for producing a curved contour on an end face of a roll includes a grinding device and a holding device, linearly movable relative to the grinding device. The grinding device is for grinding the curved contour on the end face. The holding device is for holding the roll between the holding device and the grinding device. A method for producing the curved contour on the end face using the manufacturing apparatus is also disclosed. The method includes driving the holding device to move in a linear fashion relative to the grinding device.