Rotary Guide Bush Support for Long and Small-Diameter Workpieces
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Solution Overview
Problem
Existing machine tools lack a guide bush device capable of properly supporting workpieces with small outer diameters or long lengths during machining, particularly when held by the main spindle.
Innovation Solution
A rotary guide bush device that is mounted on a tool post and can move along the main spindle's axis and intersecting directions, synchronously rotating with the spindle to guide and support the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a guide bush device is added to support workpieces with small outer diameters or long lengths, then machining precision is improved, but device complexity increases
Solution Approach 1:
The guide bush is nested within the guide bush holder, forming a compact integrated structure. The guide bush sleeve is further nested within the guide bush, creating a multi-layer nested configuration that reduces overall device complexity while maintaining support functionality for small diameter and long length workpieces
Solution Approach 2:
The guide bush device is designed with multi-functionality to handle various workpiece types (small outer diameter, long length, and standard workpieces) using a single integrated system. The adjustable guide bush can accommodate different workpiece dimensions, eliminating the need for multiple specialized devices
2Adaptability or versatility
If the guide bush device is made adjustable in multiple directions, then adaptability to different workpieces is improved, but device complexity increases
Solution Approach 1:
The guide bush device incorporates dynamic adjustability through movable components that can be positioned in multiple directions (radially and axially). The guide bush can move relative to the guide bush holder, enabling adaptation to different workpiece sizes and positions without requiring a completely different device configuration
Solution Approach 2:
The device is segmented into distinct functional components (guide bush holder, guide bush, guide bush sleeve) that can be independently adjusted and positioned. This segmentation allows each component to be optimized for specific adjustment functions while maintaining overall system simplicity
Data Source
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AI summary
Provided is a guide bush device that is easily applicable to machine tools and that can properly support a workpiece to be machined while it is held by a main spindle. A guide bush device (70) is mounted on a first turret tool post (20) to be at least movable with respect to a main spindle in a Z-axis direction along an axis of the main spindle and in an X-axis direction intersecting the axis. The guide bush device (70) is a rotary guide bush including a guide bush sleeve (72) and a guide bush (73). The guide bush sleeve (72) and the guide bush (73) of the rotary guide bush are controlled to rotate synchronously with rotation of the main spindle to guide a workpiece (W) fed from the main spindle while rotating.