Integrated Nozzle Ball Spline Vertical Slider
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Solution Overview
Problem
Vertical sliders with built-in movable coil linear motors face challenges in achieving high thrust power, accuracy, and durability while being compact and lightweight, with issues related to air leakage and difficulty in adjusting the nozzle alignment, leading to reduced reliability and increased power consumption.
Innovation Solution
The design incorporates a ball spline shaft with seamless through-holes for the foremost and rearmost nozzles, supported by outer shells and brackets, allowing for easy assembly and alignment, and a compact bed structure with elongated magnet yokes and armature coils for improved stability and accuracy, ensuring no air leakage and efficient power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the through-hole in the movable table is connected to separate foremost and rearmost nozzles made of different members, then the linear motion guide unit and stroke rotary bushing can be provided, but air leaks out from clearance between connecting parts and alignment adjustment becomes very difficult
Solution Approach 1:
The patent combines the foremost nozzle and rearmost nozzle into a single integrated nozzle component that forms a continuous through-hole. This merging eliminates the clearance between separate connecting parts, preventing air leakage while simplifying the structure. The integrated nozzle maintains both guidance functionality and air tightness by removing the interface between separate members.
2Ease of operation
If the through-hole is made with separate connecting parts for nozzles, then linear motion guidance is provided, but it becomes very difficult to adjust the degree of parallel between center location of foremost nozzle and reference surface
Solution Approach 1:
By integrating the foremost and rearmost nozzles into a single piece, the patent eliminates the need for complex alignment adjustments between separate components. The continuous through-hole provides inherent alignment reference, making it easy to establish the degree of parallel between the nozzle center location and reference surface while maintaining guidance capability.
3Ease of manufacture
If separate members are used for foremost and rearmost nozzles, then connection to through-hole is possible, but air leakage occurs from clearance between opposite connecting parts
Solution Approach 1:
The patent resolves the air leakage issue by merging the separate nozzle members into a single integrated component with a continuous through-hole. This eliminates the clearance between connecting parts that causes air leakage, while the integrated design remains easy to manufacture and assemble as a single piece.
4Manufacturing precision
If it is difficult to meet required accuracy of distance between mounting surface and center of foremost nozzle, then positioning precision deteriorates, but using separate nozzles complicates the structure
Solution Approach 1:
The integrated nozzle design simplifies the structure by eliminating multiple separate nozzle components and their complex connections. The single continuous through-hole provides a built-in reference for positioning, making it easier to meet the required accuracy of distance between the mounting surface and center of the foremost nozzle without increasing structural complexity.
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 solution provides a lightweight, compact, and highly accurate vertical slider with reduced power consumption, enhanced durability, and improved reliability by preventing air leakage and ensuring precise alignment, while maintaining high thrust power and ease of handling.
Implementation Method 1
a hollow ball-spline shaft having a through-hole to make the ball-spline extends through a lengthwise through-hole for the ball spline and the ball spline shaft is supported for sliding movement by means of a first outer shell having balls and fastened to the underneath of the bed and the second outer shell having balls and fastened to an upper portion of the bed
Implementation Method 2
a movable coil linear motor having an armature assembly lying in the gap between the field magnets and having sore than one armature coils is arranged on a coil substrate fastened to the movable table to move in a reciprocating manner relatively to the bed under the electromagnetic mutual relation between a current flow in the armature assembly and the magnetic flux in the field magnet
Data Source
AI summary
A ball spline shaft integral with a foremost and rearmost nozzle fits into a movable table for an actuator to make sure of high accuracy and high tact operation. A movable table is constituted with a movable table in which a ball spline shaft to provide a ball spline is inserted into a table body. The ball spline shaft having a through-hole has a foremost nozzle at the lower portion thereof and a rearmost nozzle at the top thereof. An outer shell is fastened to the opposite ends of the bed and the ball spline shaft is supported by a pair of the outer shells for reciprocating movement.