Lathe Eccentricity Adjustment via Mechanical Guide
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Solution Overview
Problem
Conventional eccentricity adjustment mechanisms in lathes require electrical components and slip rings, which are prone to deterioration due to coolant exposure, leading to instability and complexity in achieving precise eccentricity adjustments during high-speed rotation.
Innovation Solution
The design incorporates an axial-direction-movement part and a linear motion guide unit that moves the turntable radially by generating a radial pressing force, eliminating the need for electrical components and slip rings, allowing for safe and stable eccentricity adjustments through vertical movement of the center shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional eccentricity adjustment mechanisms are used with electrical components and slip rings, then eccentricity adjustment capability is achieved, but reliability deteriorates due to coolant exposure and slip ring deterioration
Solution Approach 1:
The patent removes electrical components and slip rings from the rotating turntable assembly, extracting the problematic elements that caused reliability issues. The eccentricity adjustment is achieved purely through mechanical means - specifically, a movable support that can shift the turntable center position relative to the spindle axis, eliminating the need for electrical connections during rotation.
Solution Approach 2:
The patent replaces the electrical control system (servo motors, ball screws, slip rings) with a pure mechanical adjustment system. The movable support structure with guide rails and positioning mechanisms provides mechanical eccentricity adjustment without requiring any electrical components on the rotating part, thus substituting electrical systems with mechanical ones.
2Duration of action of stationary object
If slip rings are used for signal and power transmission during high-speed rotation, then eccentricity adjustment is enabled, but durability deteriorates due to slip ring deterioration
Solution Approach 1:
The patent completely extracts slip rings from the system by using a pure mechanical adjustment approach. The eccentricity is adjusted by physically repositioning the turntable center through the movable support structure, which does not require continuous rotation or electrical connections, thereby eliminating slip rings and improving durability.
Solution Approach 2:
The eccentricity adjustment is performed in advance before the machining operation begins. The movable support allows the turntable center to be positioned at the desired eccentric location statically, and then the workpiece can be machined without any moving or rotating adjustment components, eliminating the need for slip rings during high-speed rotation.
3Manufacturing precision
If electrical components are placed on the turntable for eccentricity adjustment, then adjustment precision is improved, but stability deteriorates due to coolant water effects
Solution Approach 1:
The patent extracts all electrical components from the rotating turntable assembly and places them on the stationary base. The eccentricity adjustment is achieved through mechanical repositioning of the turntable center using guide rails and movable supports, which are not affected by coolant water, thereby eliminating the harmful effects of coolant on electrical components.
Solution Approach 2:
The patent replaces electrical positioning systems with mechanical positioning systems. The movable support structure with guide rails provides precise mechanical adjustment of the turntable center position without using any electrical sensors or actuators on the rotating part, making the system immune to coolant water effects.
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
This configuration simplifies the eccentricity adjustment mechanism, enhances durability by removing sensitive components, and enables precise, stable adjustment of workpiece eccentricity without signal or power transmission issues, resulting in a more reliable and efficient lathe operation.
Implementation Method 1
due to the axial-direction-movement part 5A of the center shaft 5 being moved in the axial direction, the turntable 1 moving in the radial direction by the radial pressing force generated by the linear motion guide unit 6 being inclined
Data Source
AI summary
The present invention provides a lathe that is provided with an eccentricity adjustment mechanism that makes it possible for electrical components that are readily affected by the environment to be eliminated from the turntable; for slip rings in particular, which exhibit problems in terms of the durability of signal transmission during high-speed rotation, to be eliminated as well, and for safe and stable adjustment of workpiece eccentricity to be easily achieved. A lathe provided with an eccentricity adjustment mechanism, in which a linear motion guide unit (6) is provided in an inclined state in an engaging part of the center part of a turntable (1) and an axial-direction-movement part (5A) of a center shaft (5); and, due to the center shaft (5) being moved, the turntable (1) moves in the radial direction by the radial pressing force generated by the linear motion guide unit (6) being inclined, and the eccentricity of the workpiece (3) is adjusted.