Grinding Machine Tool Circuit Board Repositioning for Stability
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Solution Overview
Problem
Conventional electric grinding machine tools have a high gravity center due to the placement of the circuit board at the top, leading to instability and heat issues that affect user comfort during operation.
Innovation Solution
The circuit board is repositioned to be on the side of the tool shaft, opposite the battery mount, with a non-perpendicular orientation, and ventilation holes are added for heat dissipation, along with a counterweight and fan blade to reduce the gravity center and improve heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the circuit board is arranged at the top end of the tool shaft, then the electrical connection is simplified, but the gravity center of the grip body is raised causing instability
Solution Approach 1:
The circuit board is repositioned from a vertical arrangement at the top end of the tool shaft to a horizontal arrangement at the side end of the tool shaft. This dimensional change in placement orientation reduces the height of the grip body and lowers the gravity center, improving stability while maintaining electrical connection functionality through the side-mounted configuration
2Volume of stationary object
If the circuit board is arranged at the top end of the tool shaft, then the internal structure is compact, but the heat generated affects user comfort
Solution Approach 1:
The circuit board is extracted from its conventional position near the user's hand and relocated to the side end of the tool shaft, opposite the battery mount. This extraction removes the heat source from the user contact zone, eliminating the harmful thermal effect while preserving the compact internal structure through optimized spatial arrangement
Solution Approach 2:
The circuit board is positioned between the battery mount and the user's hand, acting as an intermediary that separates the heat-generating component from the user contact area. This intermediate placement allows heat to be directed away from the user while maintaining electrical connection pathways
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 stabilizes the grip body, reduces heat transfer to the user, and enhances operational comfort and grinding quality by lowering the gravity center and improving heat dissipation.
Implementation Method 1
the grip body is formed with a plurality of ventilation holes forming a air passage passing through the circuit board
Implementation Method 2
a fan blade mounted on the counterweight body and rotating synchronously with the tool shaft
Data Source
AI summary
An electric grinding machine tool comprises a grip body, a grinding disc and a battery, the grip body is arranged with a tool shaft connected with the grinding disc, a driving component capable of rotating the tool shaft when receiving power, and a circuit board electrically connected with the driving component and the battery, and the grip body has a battery mount exposed to an outer surface. The board surface of the circuit board is not perpendicular to the tool shaft, the circuit board and the battery mount are respectively positioned on opposite sides of the tool shaft, and a line passes through the circuit board, the battery mount, and the tool shaft. By changing the position of the circuit board, the height of the grip body is reduced, so that the gravity center of the grip body is reduced to improve stability of a grinding operation.