Stepping Motor Bracket Guide Grooves Reduce Friction
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Solution Overview
Problem
Stepping motors face challenges in precise control due to external shocks and require manual assembly, which decreases productivity and increases frictional forces, making it difficult to maintain precise concentricity between components.
Innovation Solution
A stepping motor design featuring a bracket with protruding lines and guide grooves that minimize friction and allow for automatic assembly, where the moving member slides on these lines to reduce vibrations and facilitate precise movement, with specific width configurations to optimize sliding and prevent malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a supporting rod is inserted into the transfer nut to restrain vibrations, then vibration resistance is improved, but manufacturing complexity increases due to the need for precise concentricity adjustment between through-holes
Solution Approach 1:
The bracket is divided into multiple components (housing, supporter, first connecting bar, second connecting bar) with guide grooves formed on each. This segmentation eliminates the need for precise concentricity adjustment between through-holes, as each component can be independently manufactured and assembled. The guide grooves in each bar provide vibration restraint without requiring complex alignment procedures.
Solution Approach 2:
Guide grooves are introduced as intermediary structures between the lead screw and the moving member. These grooves facilitate smooth movement and vibration damping without requiring direct contact or precise alignment between the lead screw through-hole and supporting rod through-hole, thus reducing manufacturing complexity while maintaining vibration resistance.
2Manufacturing precision
If manual insertion of the lead screw into the bracket is required, then assembly precision can be controlled, but productivity decreases
Solution Approach 1:
The bracket is segmented into multiple independently manufacturable components (housing, supporter, connecting bars with guide grooves). This allows each component to be manufactured separately with standard tolerances and then assembled together, eliminating the need for manual insertion and complex alignment procedures, thereby improving productivity without sacrificing assembly precision.
Solution Approach 2:
The guide grooves are designed to automatically guide the lead screw and moving member into proper alignment during assembly. This self-aligning feature eliminates the need for manual insertion and precision adjustment operations, enabling automatic assembly while maintaining manufacturing precision.
3Device complexity
If the transfer nut is coupled only with the lead screw, then structural simplicity is maintained, but the transfer nut easily moves due to external shocks making precise control difficult
Solution Approach 1:
The guide grooves in the connecting bars are merged with the structural design of the bracket components. This integration provides additional support and vibration damping for the moving member without adding separate supporting structures, thus maintaining structural simplicity while improving control precision under external shocks.
Solution Approach 2:
The connecting bars serve multiple functions: they structurally connect the housing and supporter, provide guide grooves for the moving member, and damp vibrations from external shocks. This multi-functionality maintains structural simplicity while enhancing control precision, eliminating the need for separate supporting components.
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 design reduces frictional forces, minimizes vibrations, and enables automatic assembly, improving the precision and reliability of stepping motor operations while preventing malfunctions due to external shocks.
Implementation Method 1
The present invention provides a stepping motor capable of reducing a frictional force between a bracket and a moving member
Implementation Method 2
The present invention also provides a stepping motor capable of being automatically assembled by modifying shapes of a bracket and a nut
Data Source
AI summary
A stepping motors includes a bracket including a first protruding line and a second protruding line formed on both sides, a stator and a rotor disposed on the bracket, a lead screw coupled with the rotor, and a moving member which moves back and forth according to a rotation of the lead screw, in which the moving member includes a first guide groove which slides on the first protruding line and a second guide groove which slides on the second protruding line, and the first guide groove and the second guide groove include first sections which have widths corresponding to the first protruding line and the second protruding line, respectively, and second sections which have greater widths than the first sections.