Elastic Grinding Wheel Dry Processing Axial Workpieces
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Solution Overview
Problem
Existing methods for grinding axial workpieces with oil seal fit portions struggle to remove turning lead portions without using grinding fluids, leading to potential oil leakage and environmental and cost issues due to fluid scattering and treatment requirements.
Innovation Solution
A method and apparatus utilizing an elastic grinding stone wheel, movable radially and rotatably attached to a lathe, which employs abrasive grains mixed with non-rigid plastic granules to perform dry grinding, reducing stress and heat generation, and allowing for the removal of turning lead portions without cooling fluids or dust adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grinding fluid is used to prevent burning during grinding, then the reliability of the grinding process is improved, but the environmental harm and operational complexity worsen due to fluid scattering and treatment requirements
Solution Approach 1:
The invention extracts and removes the grinding fluid from the grinding system, achieving dry grinding through the use of an elastic grinding wheel that generates minimal heat and stress. This eliminates the harmful environmental effects of grinding fluid scattering and treatment while maintaining reliable grinding of the oil seal fit portion.
Solution Approach 2:
The invention changes the physical parameters of the grinding wheel from rigid to elastic, which fundamentally alters the grinding mechanism. The elastic wheel deforms under load, reducing stress concentration and heat generation, thereby enabling reliable dry grinding without requiring cooling fluids.
2Manufacturing precision
If conventional rigid grinding wheels are used for grinding axial workpieces, then the manufacturing precision is improved, but the heat generation and stress concentration worsen causing burning and requiring grinding fluid
Solution Approach 1:
The invention changes the material parameter of the grinding wheel from rigid to elastic. The elastic wheel compresses and deforms during grinding, distributing the load over a larger area and reducing stress concentration. This significantly reduces heat generation and prevents burning while maintaining the manufacturing precision required for the oil seal fit portion.
Solution Approach 2:
The elastic grinding wheel is made from composite elastic material that combines flexibility with abrasive properties. This composite structure allows the wheel to conform to the workpiece surface while providing effective material removal, achieving both precision and reduced heat generation in dry grinding conditions.
3Object-affected harmful factors
If dry grinding is attempted with rigid grinding wheels, then the environmental impact is reduced, but the grinding effectiveness worsens due to heat generation and inability to remove turning lead portions
Solution Approach 1:
The invention changes the elastic modulus parameter of the grinding wheel, making it flexible rather than rigid. This allows the wheel to adapt to the workpiece surface and maintain continuous contact during dry grinding, ensuring effective removal of turning lead portions and achieving productivity comparable to conventional wet grinding without environmental harm.
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
Enables effective dry grinding of axial workpieces, reducing dust and fluid-related issues, lowering manufacturing costs, and maintaining a clean work environment while achieving high-quality surface finishes comparable to conventional grinding.
Implementation Method 1
an elastic grinding wheel for finishing the oil seal fit portion
Implementation Method 2
an elastic grinding wheel for finishing the oil seal fit portion, the wheel being disposed to be movable radially back and forth
Data Source
AI summary
A method and an apparatus for grinding an axial workpiece are capable of removing a turning lead portion of an axial workpiece having an oil seal fit portion on its outer circumferential surface by grinding without any grinding fluid. The apparatus includes a headstock of a lathe for rotatably supporting an axial workpiece about its axis, the workpiece having an oil seal fit portion on its outer circumferential surface, and a slide mount disposed so as to be radially movable with respect to a tool turret of the lathe. The apparatus also includes an air cylinder for moving the slide mount back and forth in alignment with the axis of the headstock, an elastic grinding stone wheel rotatably attached to the slide mount to be movable radially back and forth with respect to the oil seal fit portion by the slide mount being moved, and a brushless motor for rotating the elastic grinding stone wheel.