Linear Motor Transport Device Connection Structure
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Solution Overview
Problem
Existing linear motor type transport devices face challenges in achieving precise linear connections due to the difficulty in combining dimensional precision between dovetail grooves, connection key, and end face contact precision.
Innovation Solution
A connection structure that includes a notch concave part with a first and second concave part on the end faces of the base parts, a reference positioning part, a bottom surface support part, and a pressing member to linearly fix the rail parts, allowing for easy and precise alignment and connection of multiple linear motor type transport devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional connection methods using dovetail grooves and connection keys are used, then linear positioning is achieved, but manufacturing precision and assembly difficulty increase due to the need for high dimensional precision between multiple components
Solution Approach 1:
The connection structure is divided into modular components: a positioning member with positioning parts for each rail part, a positioning support member with support parts, and pressing members. This segmentation allows each component to be manufactured independently with standard tolerances, eliminating the need for high-precision machining of the entire connection assembly while maintaining accurate linear positioning.
Solution Approach 2:
The positioning member acts as an intermediary component that mediates between the rail parts and the base part. It provides reference positioning surfaces that guide the rail parts into correct alignment, while the positioning support member provides intermediate support. This intermediary structure simplifies the connection by decoupling the positioning function from the rigid dovetail groove structure.
2Reliability
If high contact precision between rail fixing pieces and traveling rails is required, then connection reliability improves, but assembly ease deteriorates due to difficulty in achieving precise alignment
Solution Approach 1:
The positioning member and positioning support member are installed beforehand on the base part to establish reference positions and support surfaces. This preliminary action creates a guided assembly path, allowing rail parts to be easily aligned and connected without requiring high skill or specialized tools, while ensuring reliable contact precision through the pre-established positioning features.
Solution Approach 2:
The positioning structure enables self-alignment of the rail parts with the base part. The positioning parts of the positioning member and the support parts of the positioning support member automatically guide the rail parts into correct position when brought together, eliminating the need for complex alignment procedures or specialized assembly techniques while ensuring reliable connection.
3Manufacturing precision
If end faces of traveling rails are formed with oblique inclined surfaces for linear connection, then connection precision improves, but manufacturing complexity increases
Solution Approach 1:
The positioning function is segmented from the rail part itself and transferred to separate positioning members and positioning support members. This eliminates the need to machine oblique inclined surfaces on the rail end faces, as the positioning features are provided by the modular positioning components which can be manufactured with standard tolerances and assembled to achieve precise linear connection.
Data Source
AI summary
A connection structure of first and second linear motor type transport devices each having a base part, and a rail part set on the top surface of the base part is provided, including: a notch concave part formed in the top surfaces of the base parts with both devices connected; a reference positioning part serving as a reference position of lower edges on one side in the width direction of the rail parts; a bottom surface support part disposed in the notch concave part, and set between the bottom surface of the notch concave part and the bottom surfaces of the rail parts; and a pressing member interposed between the wall part of the notch concave part and lower edges on the other side of the rail parts, and urging the lower edges on the other side of the rail parts toward the reference positioning part, thereby linearly fixing the first and second linear motor type transport devices to be connected.