Automatic Balancer Radial Layout for Compact Wireless Power Transfer
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Solution Overview
Problem
Conventional automatic balancers for rotating bodies, such as grinding stones, require a significant installation space due to their length in the axial direction of the rotation axis, necessitating modifications to the housing case of the grinding machine.
Innovation Solution
The automatic balancer design includes a balance head with a balance correction mechanism, a stator configured in a ring shape along the circumferential direction of the outer peripheral surface, and a rotor part also in a ring shape, allowing for wireless communication and a non-contact transmission of drive power and commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the balance head and stator are arranged in series along the axial direction with the balance head and stator overlapping in thickness direction, then wireless power transmission and control are achieved, but the length of the automatic balancer in the axial direction becomes long requiring significant installation space
Solution Approach 1:
The patent transitions from a conventional axial arrangement to a radial arrangement where the stator is positioned on the outer peripheral surface of the balance head case and the rotor part is positioned on the inner peripheral surface facing the stator. This dimensional change from axial to radial positioning enables wireless power transmission while significantly reducing the length in the axial direction, as the stator and rotor part are now arranged circumferentially rather than axially.
2Adaptability or versatility
If the balance head and stator are arranged in series along the axial direction, then non-contact type balance head configuration is achieved, but modifications to the housing case are required to install the automatic balancer
Solution Approach 1:
The patent positions the stator on the outer peripheral surface and the rotor part on the inner peripheral surface in a radial arrangement, which allows the automatic balancer to be installed in standard housing cases without modifications. This radial configuration fits within the existing cylindrical space of conventional grinding machines, eliminating the need to modify the housing case while maintaining the non-contact type configuration.
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
This configuration reduces the overall length of the automatic balancer in the axial direction, minimizing the required installation space and eliminating the need for modifications to the grinding machine's housing case.
Implementation Method 1
the stator and the rotor part are configured to perform wireless communication therebetween
Implementation Method 2
The stator disclosed in Patent Literature 2 includes a transmitter and a stator coil which can wirelessly transmit drive power and drive command
Data Source
AI summary
An automatic balancer comprising: a balance head configured to rotate integrally with a rotating body around a rotation axis of the rotating body, the balance head including a balance correction mechanism configured to correct imbalance of the rotating body, and a case having a cylindrical outer peripheral surface parallel to the rotation axis and configured to house the balance correction mechanism; a stator provided separately from the balance head and having a shape which is along a circumferential direction of the outer peripheral surface with a clearance from the outer peripheral surface; and a rotor part provided at a position where the rotor part faces the stator on the outer peripheral surface, configured to rotate integrally with the balance head, the rotor part having a shape along the circumferential direction of the outer peripheral surface, wherein the stator and the rotor part are configured to perform wireless communication therebetween.