Rotating-Layering Mold Bearing Layout for Precise Motor Core Lamination
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Solution Overview
Problem
Existing rotating-layering molds are susceptible to thrust and radial loads, which reduce rotation accuracy and manufacturing efficiency for motor cores, as they are not adequately supported to prevent deformation and maintain precise alignment during high-speed punching and lamination processes.
Innovation Solution
The rotating-layering mold incorporates a squeeze ring with a holding hole, supported by first and second thrust bearings and a radial bearing, arranged between inner ring portions to maintain rotation accuracy and resist vertical and horizontal loads, with preloaded bearings and a guided pulley system to manage tension and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotating-layering mold rotates at high speed to improve manufacturing efficiency, then productivity increases, but the thrust load and radial load increase, reducing rotation accuracy and manufacturing precision
Solution Approach 1:
The bearing support system is segmented into multiple functional components: first and second thrust bearings separated to handle vertical loads from different directions, and radial bearings positioned at multiple locations to handle horizontal loads. This segmentation allows each bearing to specialize in specific load directions, maintaining rotation accuracy even at high speeds.
Solution Approach 2:
The bearing arrangement transitions from a single-plane support to a three-dimensional configuration. Thrust bearings are positioned at different vertical levels (first thrust bearing above, second thrust bearing below the radial bearings), creating a spatial distribution of support points that comprehensively handles loads from multiple dimensions simultaneously.
2Productivity
If the tension of the timing belt is increased to rotate the rotating-layering mold at high speed, then productivity increases, but the radial load increases, inclining the posture and reducing rotation accuracy
Solution Approach 1:
Radial bearings are strategically positioned at specific locations (both ends and center of the rotating-layering mold) to provide localized support against radial loads from the timing belt. This localized quality enhancement ensures that high-tension operation does not cause overall inclination, maintaining posture accuracy during high-speed rotation.
3Ease of operation
If the rolled steel plate is punched without rotation to maintain simplicity, then ease of operation is improved, but the laminated member becomes inclined, reducing manufacturing precision
Solution Approach 1:
The rotating-layering mold implements periodic rotation after each punching cycle, rotating by a predetermined angle to change the orientation of the punched plate-shaped rolled steel sheets. This periodic rotational action ensures that successive laminations are not all in the same orientation, preventing cumulative inclination and maintaining manufacturing precision while keeping the punching operation itself simple.
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 enhances the rotation accuracy of the squeeze ring, improving manufacturing accuracy for motor cores by resisting thrust and radial loads, ensuring precise lamination and alignment without deformation, thus improving manufacturing efficiency.
Implementation Method 1
a first thrust bearing, a second thrust bearing, and a radial bearing in order to support the rotation of the squeeze ring with respect to the lower mold
Implementation Method 2
a first thrust bearing, a second thrust bearing, and a radial bearing in order to support the rotation of the squeeze ring with respect to the lower mold
Implementation Method 3
with preloaded bearings and a guided pulley system to manage tension and prevent deformation
Data Source
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AI summary
The present invention provides a rotating-layering mold whereby a punched sheet is rotated according to a prescribed angle and layered by an upper mold and a lower mold working in tandem, and provides a press apparatus comprising the rotating-layering mold. A rotating-layering mold 201 comprises a squeeze ring 202 in which is provided a holding hole 203 for holding a punched sheet, the squeeze ring 202 being capable of rotating with respect to a lower mold 105 so that an upper outer circumferential surface 211 of the squeeze ring 202 lies along an inner circumferential surface 109 of the lower mold 105. The rotating-layering mold 201 further comprises a first thrust bearing, a second thrust bearing, and a radial bearing in order to support the rotation of the squeeze ring 202 with respect to the lower mold 105.