Two-Spindle Lens Polishing Machine with Interchangeable Adapters
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Solution Overview
Problem
Existing methods for polishing spherical surfaces of lenses are costly and labor-intensive, requiring complex three-spindle machines and skilled operators for precise adjustments and dressing processes.
Innovation Solution
A two-spindle machine design that integrates a tool spindle and a workpiece spindle, allowing for interchangeable tool and base adapters, which simplifies the polishing process and eliminates the need for separate machines for dressing and lens holder machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a three-spindle machine is used for polishing lens surfaces, then machining precision can be maintained, but device complexity and costs increase significantly
Solution Approach 1:
The patent combines the functions of the polishing spindle and dressing spindle into a single tool spindle. The tool spindle can perform both polishing operations (holding a polishing tool) and dressing operations (holding a dressing tool) by interchangeable tool adapters, eliminating the need for separate spindles while maintaining machining precision through the integrated design.
Solution Approach 2:
The tool spindle is designed with universal functionality to perform multiple operations. Through interchangeable tool adapters, the same spindle can hold different tools (polishing tool, dressing tool, grinding tool) and perform corresponding operations, making the device multi-functional without requiring additional specialized spindles.
2Manufacturing precision
If separate machines are used for dressing and lens holder machining, then operational precision is maintained, but productivity decreases due to multiple setup operations
Solution Approach 1:
The patent merges the dressing function and lens holder machining function into the main polishing machine. The workpiece spindle can interchangeably hold the lens holder for machining operations or the lens for polishing operations, while the tool spindle provides the machining capability. This integration eliminates the need for separate external machines and multiple setup operations.
Solution Approach 2:
By integrating multiple functions into a single machine, the patent enables continuous production workflows. The interchangeable adapter system allows quick transition between operations without requiring transport to separate machines, maintaining production continuity and eliminating idle time between dressing, holder machining, and polishing operations.
3Manufacturing precision
If skilled specialists perform dressing operations, then operational precision is achieved, but labor costs and operational complexity increase
Solution Approach 1:
The system enables operators to perform dressing operations using the same simplified interchangeable adapter mechanism used for tool changes. The standardized workpiece adapter and tool adapter interfaces allow any operator to change between polishing tools and dressing tools without requiring specialized skills, making the dressing operation as easy as a regular tool change.
4Device complexity
If a two-spindle machine with interchangeable adapters is used, then device complexity and costs are reduced, but adaptability for different operations must be maintained
Solution Approach 1:
The interchangeable adapter system provides universal compatibility. The standard workpiece adapter interface and tool adapter interface allow different tools (polishing, dressing, grinding) and workpieces (lenses, lens holders) to be mounted on the same spindles, maintaining full operational versatility while using a simplified two-spindle structure.
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
The two-spindle machine design significantly reduces costs and labor requirements, enhances machining accuracy, and allows for efficient polishing and dressing processes within a single device, thereby streamlining the lens production process.
Implementation Method 1
Polishing occurs through a sliding relative movement between the surface of the workpiece to be processed and a polishing tool designed as a holder for a polishing agent carrier. This, in conjunction with a polishing agent, enables the polishing removal and thus the adjustment or smoothing of the workpiece surface.
Data Source
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AI summary
The invention relates to a device for polishing spherical surfaces of glass lenses, comprising a rotating tool spindle for holding a machining tool that is movable along an axis by means of a feed drive, wherein a relative movement about a transverse axis can be performed between the polishing tool and the lens. The device is designed as a two-spindle machine with a tool spindle and a workpiece spindle, and wherein a holder for the lens or a holder for a dressing tool is arranged on the workpiece spindle. The invention also relates to a method for polishing spherical surfaces of glass lenses.