Auxiliary Fixing Device for DC Motor Long Screw Assembly
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Solution Overview
Problem
The manual assembly of direct current motors is labor-intensive and inefficient due to the difficulty in firmly fixing the front and rear end covers and housing using a long screw, requiring multiple attempts and increasing operator labor intensity.
Innovation Solution
An auxiliary fixing device with a base, vertically arranged support frame, lifting driving mechanism, and positioning plates with grooves and guides facilitates the alignment and compression of the motor components, allowing for precise positioning and efficient screwing of the long screw without manual strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual compression is used to fix the front end cover, housing and rear end cover, then the device complexity is reduced, but the reliability of fixation is insufficient requiring multiple screwing attempts
Solution Approach 1:
A compression device is introduced as an intermediary tool between the operator and the motor components. The compression device includes a compression plate that contacts the rear end cover and a compression rod that transmits force to compress the corrugated gasket, providing reliable fixation without requiring multiple screwing attempts
2Reliability
If multiple screwing attempts are made to complete the assembly, then the fixation reliability is improved, but the productivity decreases due to increased labor intensity and time consumption
Solution Approach 1:
The compression device performs preliminary compression of the corrugated gasket before the long screw is fully installed. The compression plate and compression rod pre-compress the sealing structure, ensuring proper fixation is achieved in advance, eliminating the need for repeated screwing attempts and improving assembly efficiency
3Ease of operation
If the motor components are not firmly fixed during assembly, then the ease of operation is improved, but the manufacturing precision deteriorates due to misalignment of the long screw
Solution Approach 1:
The compression device acts as a mediator that maintains proper alignment between the front end cover, housing, and rear end cover during compression. The compression plate and compression rod transmit force along the central axis, preventing lateral displacement and ensuring the long screw remains properly aligned throughout the assembly process
Data Source
AI summary
An auxiliary fixing device for mounting a long screw of a direct current motor comprises a base and a vertically arranged support frame, the base is provided with a motor front end cover positioning plate, and a lower end of the support frame is fixed with a rear side of the base; the support frame is fixed with a lifting driving mechanism, and the lifting driving mechanism is fixed with a motor rear end cover compressing plate; the motor rear end cover compressing plate is provided with a number of long screw abdicating grooves corresponding to long screw through holes on the motor rear end cover; the base is provided with a front output shaft groove through which a motor front output shaft can pass, and the motor front end cover positioning plate is provided with a bearing chamber positioning groove which is matched with a motor front bearing chamber; and the motor rear compressing plate is provided with an outgoing line guide groove which is configured to accommodate a motor rear end cover outgoing line.