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Application-oriented classification and performance analysis of precision linear feed mechanisms for machine tools.

Jinglei Zhou¹, Hanwen Yu¹, Mingxuan He¹

¹School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, People's Republic of China.

Science Progress

|January 29, 2026

Summary

This study introduces a systematic framework to classify linear feed mechanisms for precision machine tools. It guides engineers in selecting optimal mechanisms based on accuracy, stiffness, and load capacity for improved machining system design.

Keywords:

Review direct-drive technology exhibitable institutions linear feed mechanism precision transmission

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Area of Science:

Mechanical Engineering
Manufacturing Technology
Precision Engineering

Background:

The selection of linear feed mechanisms in precision machine tools lacks a systematic framework, leading to performance mismatches with application requirements.
This mismatch hinders the optimization of high-performance machining systems regarding accuracy, stiffness, and load capacity.

Purpose of the Study:

To establish a systematic classification system for linear feed mechanisms.
To define quantified performance boundaries for existing technologies.
To guide optimal mechanism selection and future innovation in precision motion systems.

Main Methods:

A structured classification system was developed, categorizing mechanisms into four types: typical linear drive, linear linkage, high-precision feed, and novel linear mechanisms.
Analysis of working principles based on positioning accuracy, structural stiffness, and load capacity.
Quantification of performance boundaries and identification of applications for each category.

Main Results:

Typical linear feed mechanisms are widely used but exhibit low accuracy.
Linear linkage mechanisms offer structural benefits but may lack high accuracy.
High-precision feed mechanisms achieve micrometer-level accuracy for demanding applications.
Novel linear mechanisms represent the future direction for technological development.

Conclusions:

The developed performance-oriented classification framework effectively addresses the selection challenges for precision linear feed mechanisms.
The study provides a systematic performance spectrum and a decision-making tool for engineers.
It illuminates pathways for future innovation in precision motion systems.