Composite Grinding Wheel Finishing With Online Profile Detection

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Solution Overview

Problem

Current grinding wheel finishing technologies face limitations such as high cost, low efficiency, low precision, narrow adaptability, and low automation, particularly with metal-based diamond wheel methods, which are complex and require special equipment.

Innovation Solution

A universal automatic composite grinding wheel finisher that combines electric spark and laser roughing with mechanical finishing, utilizing a workpiece working mechanism, detecting mechanism, and motion control mechanism to achieve precise finishing of various grinding wheels with low cost, high efficiency, and high automation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If electric spark finishing method is used, then finishing speed is improved, but machining gap uniformity deteriorates and surface roughness is not ideal

Engineering Contradiction:
Improvefinishing speedVSAvoidsurface roughness
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent combines electric spark finishing with laser finishing and mechanical finishing into a composite finishing system. The electric spark finishing mechanism is integrated with laser finishing device and mechanical finishing device, allowing the strengths of each method to complement each other while mitigating their individual weaknesses.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent changes the parameters of the finishing process by introducing multiple finishing methods with different characteristics. The system can adjust between electric spark, laser, and mechanical finishing parameters to optimize both speed and surface quality for different grinding wheel types and requirements.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If diamond roller method is used, then finishing precision is improved, but efficiency deteriorates and device complexity increases

Engineering Contradiction:
Improvefinishing precisionVSAvoidfinishing efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent merges diamond roller mechanical finishing with electric spark finishing and laser finishing. The mechanical finishing device provides high precision contact finishing, while the other two methods handle material removal and surface treatment, achieving both high precision and high efficiency.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If electrolytic finishing method is used, then finishing speed is improved, but adaptability deteriorates and device complexity increases

Engineering Contradiction:
Improvefinishing speedVSAvoidadaptability to different grinding wheels
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal finishing system that can handle various types of grinding wheels (metal bond, resin bond, ceramic, superhard abrasive) through multiple finishing mechanisms. The system is designed to adapt to different grinding wheel materials and requirements, providing both high speed and wide adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines electrolytic finishing with electric spark finishing, laser finishing, and mechanical finishing to create a multi-functional system that maintains high speed while improving adaptability to different grinding wheel types through the complementary capabilities of each finishing method.

Inventive Principle:
Principle #5Merging (Combining)

4Manufacturing precision

If metal-based diamond wheel finishing method is used, then finishing precision is improved, but cost increases and adaptability deteriorates

Engineering Contradiction:
Improvefinishing precisionVSAvoidadaptability to different grinding wheel types
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent designs a universal finishing system with multiple finishing mechanisms that can process various types of grinding wheels including metal bond, resin bond, ceramic, and superhard abrasive wheels, achieving high precision without being limited to specific wheel types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent changes the finishing approach by offering multiple methods (electric spark, laser, mechanical) with different parameters and characteristics, allowing optimization for different grinding wheel materials and applications, thereby improving both precision and adaptability.

Inventive Principle:
Principle #35Parameter changes

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 finisher achieves high precision and efficiency in finishing grinding wheels with online monitoring and re-imaging detection, ensuring accurate finishing and reducing the need for special equipment, while maintaining low costs and simplicity in operation.

Implementation Method 1

through electric spark and laser roughing and mechanical finishing

Methodology Applied
Scientific EffectLaser ablation: Laser Ablation

Implementation Method 2

through electric spark and laser roughing and mechanical finishing

Methodology Applied
Scientific EffectElectrical discharge machining: Electrical Discharge Machining

Implementation Method 3

a projection monitoring device to monitor a finishing of the grinding wheel in real time

Methodology Applied
Scientific EffectOptical projection: Shadow

Implementation Method 4

the graphite plate or ceramic plate re-imaging a finishing profile of the grinding wheel

Methodology Applied
Scientific EffectRe-imaging: Reflection

Data Source

PatentEP3584035B1Universal automatic composite grinding wheel finisher
Publication Date: 2022.05.11 HUNAN UNIV
  • EP3584035B1 patent drawingFigure 1~2
  • EP3584035B1 patent drawingFigure 3~4
  • EP3584035B1 patent drawingFigure 5~6

AI summary

A universal automatic composite grinding wheel finisher comprises a workpiece working mechanism, a finishing mechanism, a detecting mechanism and a motion control mechanism; the workpiece working mechanism adjusts a grinding wheel to be finished to a desired position for finishing; the finishing mechanism comprises a finishing feed device, a spindle, a laser finishing device, an electric spark finishing device and a mechanical finishing device; the spark finishing device or the mechanical finishing device to move to a desired position by the finishing feed device, for finishing the grinding wheel; the detecting mechanism comprises a projection monitoring device and a re-imaging detection device; the projection monitoring device monitors a finishing of the grinding wheel in real time; the re-imaging detection device performs online re-imaging detection on the finishing of the grinding wheel, and transmits a detection result to the motion control mechanism.