Motor-Driven Surface Processing With Eccentric Polishing Assembly
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Solution Overview
Problem
Pneumatic-powered surface processing devices, such as abrasive discs, suffer from unstable rotary frequency, noise, and maintenance challenges, leading to surface imperfections and operational difficulties.
Innovation Solution
A surface processing device with a machining mechanism driven by a motor through a first transmission shaft, eccentrically coupled with a sealing component and a clutch assembly, which includes a motor, clutch, and oil seals to stabilize rotation, reduce noise, and enhance control, allowing for precise polishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pneumatic-powered abrasive discs are used for surface processing, then the device can operate and perform polishing, but the rotary frequency becomes unstable causing surface imperfections
Solution Approach 1:
The patent replaces the pneumatic-powered system with a motor-driven system. The motor provides stable rotational speed control through electrical means, eliminating the unstable rotary frequency inherent in pneumatic systems. This substitution directly resolves the contradiction by providing both operational reliability and surface polishing precision simultaneously.
2Ease of manufacture
If pneumatic-powered machining devices are used, then the device can perform surface processing, but the device generates very noise during operation
Solution Approach 1:
The patent substitutes the pneumatic power source with an electric motor. Electric motors operate significantly quieter than pneumatic systems, which generate noise through compressed air discharge and mechanical impact. This substitution maintains full operational capability while dramatically reducing noise pollution.
3Ease of manufacture
If pneumatic-powered surface processing devices are used, then the device can perform machining, but the device is difficult to maintain
Solution Approach 1:
The patent replaces the complex pneumatic system with a simpler electric motor-driven system. Pneumatic systems require air supply infrastructure, filters, regulators, and lubrication systems that are difficult to maintain. The electric motor system eliminates these requirements, making the device easier to maintain while preserving machining capability.
4Ease of operation
If pneumatic-powered abrasive discs are used, then the device can operate, but the sandpapers jump causing lines and rough areas on the workpiece
Solution Approach 1:
The patent replaces the pneumatic drive with a motor-driven system that provides smooth, consistent rotation. The unstable pulsating motion of pneumatic systems causes abrasive discs to jump and create surface defects. The motor-driven system delivers steady rotational speed, eliminating disc jumping and ensuring uniform surface finish quality.
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 solution provides stable and controlled rotation, reduces noise, and improves the quality of surface polishing by minimizing jumping and tilting of the abrasive elements, enhancing the overall machining process.
Implementation Method 1
a motor, the motor is connected to a second end of the first transmission shaft to transmit power
Implementation Method 2
the first transmission shaft extends through the connecting body and is eccentrically coupled with the machining assembly at a first end thereof
Implementation Method 3
the sealing component is arranged between the first transmission shaft and the connecting body
Data Source
AI summary
A surface processing device includes a machining mechanism and a driving mechanism driving the machining mechanism to polish a workpiece. The machining mechanism includes a machining assembly and a first transmission shaft eccentrically coupled with the machining assembly at a first end. The first transmission shaft rotates to bring the machining assembly into revolving around the first transmission shaft. The driving mechanism includes a motor connected to a second end of the first transmission shaft for outputting power to the machining mechanism. The surface processing device provides smooth machining without the noise of a pneumatically-powered tool.