Multi-Tool Grinding Layout for Single-Setup Bearing Cone Machining
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Solution Overview
Problem
Current manufacturing processes for parts like bearings require multiple machining operations performed on different machines, leading to costly and time-consuming manual positioning and re-positioning, as well as the need for separate precision positioning systems and grinding wheel dressing systems for each machine.
Innovation Solution
A multi-tool precision positioning and manufacturing system that uses a single precision positioning system and a single grinding wheel dresser to perform multiple manufacturing operations on a single part, eliminating the need for manual re-positioning and reducing the number of required machines and systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate grinding machines are used to perform different grinding operations, then each machine can be optimized for its specific operation, but the capital equipment cost increases and the manufacturing process becomes more complex
Solution Approach 1:
The patent combines multiple grinding operations (ID grinding, OD grinding, rib grinding) into a single multi-functional grinding machine. The machine integrates multiple grinding wheels and tooling systems that can perform different grinding operations on a workpiece without requiring manual removal and repositioning to separate machines. This merging reduces the number of machines from three to one while maintaining the precision of each grinding operation through integrated tooling and automated positioning.
Solution Approach 2:
The grinding machine is designed with universal capability to perform multiple grinding operations on different surfaces of a workpiece. The machine includes multiple grinding wheels (ID grinding wheel, OD grinding wheel, rib grinding wheel) and a positioning system that can accommodate various tooling configurations, allowing a single machine to replace multiple specialized machines while maintaining operation-specific precision.
2Manufacturing precision
If manual positioning and re-positioning of parts between machines is performed, then each operation can be set up by a machinist, but the manufacturing time increases and labor costs increase
Solution Approach 1:
The machine incorporates pre-configured tooling and positioning systems for each grinding operation. The tooling is prepared and positioned in advance on the machine, and the automated positioning system pre-calculates and executes the precise movements required to bring the workpiece to each grinding wheel. This eliminates the need for manual setup and repositioning between operations, reducing both time and potential positioning errors.
Solution Approach 2:
The patent introduces an automated positioning system as an intermediary between the workpiece and the multiple grinding wheels. This system includes automated tooling and positioning mechanisms that handle the workpiece transfer and alignment between different grinding operations, replacing manual machinist operations and reducing both time loss and positioning variability.
3Manufacturing precision
If separate precision positioning systems and grinding wheel dressing systems are used for each machine, then each system can be optimized independently, but the capital equipment cost increases
Solution Approach 1:
The patent consolidates multiple precision positioning systems into a single integrated positioning system that controls the workpiece positioning for all grinding operations. Similarly, multiple grinding wheel dressing systems are merged into a single dressing system that can service all grinding wheels on the machine. This reduces the number of independent systems from three to one for each function while maintaining the precision required for each operation through centralized control and coordination.
4Manufacturing precision
If parts are moved across the shop floor between machines, then each operation can be performed on specialized equipment, but the transport time and costs increase
Solution Approach 1:
The patent merges multiple specialized grinding machines into a single multi-functional machine that performs ID grinding, OD grinding, and rib grinding in sequence. The workpiece remains on the machine throughout all operations, eliminating the need to move parts across the shop floor between machines. This integration maintains operation quality through specialized grinding wheels and tooling while dramatically reducing transport time and improving productivity by keeping the workpiece stationary.
Data Source
AI summary
A multi-tool positioning and manufacturing system moves a workpiece among many tools, such as grinding wheels, each of which performs a manufacturing operation on the workpiece. The system moves the workpiece automatically, quickly, repeatably, and precisely among the tools, without any manual intervention. It can perform the same manufacturing operations as many separate tools, such as grinding the inner diameter, outer diameter, and rib of a tapered roller bearing cone. Because a machinist does not have to move the workpiece between machines for different operations, the total manufacturing process can be faster and higher yield than with separate tools. The system can also move a single dresser among the tools for dressing and truing, further increasing manufacturing efficiency by eliminating the need for separate dressers for separate tools.