Numerically Controlled Machine Tool Post Member Guide Configuration
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Solution Overview
Problem
Conventional numerically controlled machine tools face challenges in accurately controlling the position of machining members due to uneven load distribution and imbalance during sliding, leading to smooth sliding issues and position inaccuracies.
Innovation Solution
The design includes a first driving part with a driving motor and screw positioned between horizontal rails, and a second post member with vertical rails for balanced support, ensuring stable sliding by distributing load evenly and minimizing run-out errors through the use of additional horizontal and vertical rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only the back surface of the post member is supported by guides, then the structure is simple, but load concentrates forward causing uneven distribution and interrupting smooth sliding
Solution Approach 1:
The single back-surface support is segmented into multiple support points: two guides supporting the back surface and one additional guide supporting the front surface. This segmentation distributes the load across multiple contact points, preventing concentration at the front surface and ensuring smooth sliding throughout the entire post member length.
Solution Approach 2:
The support system transitions from one-dimensional (back surface only) to three-dimensional spatial distribution by adding front surface support. The guides are positioned at different locations along the post member's length, creating a distributed support structure that balances loads in multiple directions and prevents uneven stress concentration.
2Device complexity
If only the back surface of the post member is supported by guides, then fewer guides are needed, but position control accuracy of the machining member deteriorates
Solution Approach 1:
The positioning system is segmented into multiple guide elements distributed along the post member. By dividing the support function across two back guides and one front guide, the system achieves higher position control accuracy through distributed constraint, preventing both the post member and machining member from deviating from their intended positions during operation.
3Area of stationary object
If guides are lengthily installed in one direction, then support coverage is increased, but load concentrates in that direction causing sliding interruption
Solution Approach 1:
Rather than uniformly distributing guides along the entire length, the invention applies local quality by strategically positioning guides at specific locations: two guides at the back surface and one guide at the front surface. This localized placement optimizes support coverage where it is most needed while preventing load concentration, ensuring smooth sliding through targeted structural reinforcement.
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 stabilizes the sliding of the post member, allowing for accurate control of the machining member's position by balancing forces and minimizing displacement and run-out errors, resulting in precise machining operations.
Implementation Method 1
a first driving part comprising a first driving motor and a first driving screw to slide the first post member along the first and second horizontal rails in the left/right direction
Data Source
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AI summary
The present invention relates to a numerically controlled machine tool and, more particularly, to a numerically controlled machine tool which can accurately control a position of a fabrication member for fabricating a workpiece. The numerically controlled machine tool of the present invention comprises: a first post member installed in a body slidingly in the lateral direction; and first, second and third horizontal rails installed in the body elongatedly in the lateral direction and respectively coupled to two points of the rear part and one point of the front part of the first post member for guiding sliding of the first post member.