Workpiece ejection device and machine tool
The integration of a coaxial pressing rod and cylinder with an internal coolant passage in the spindle headstock addresses the challenge of compactly integrating workpiece discharge and coolant supply, improving spindle functionality and machining efficiency.
JP7874227B1Active Publication Date: 2026-06-15DMG MORI CO LTD
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Patent Information
- Application Number
- JP2025227251
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-06-15
- Estimated Expiration
- 2045-12-03
AI Technical Summary
Technical Problem
Existing machine tools face challenges in compactly integrating a workpiece discharge function while maintaining the functionality of the spindle headstock, particularly in terms of coolant supply and ejection efficiency.
Method used
A workpiece ejection device is integrated into the spindle headstock, featuring a coaxially arranged pressing rod and cylinder for axial operation, with an internal coolant passage to supply coolant and eject the workpiece, enhancing spindle functionality.
Benefits of technology
The solution allows for a compact spindle headstock with improved workpiece ejection and coolant supply, enhancing machining efficiency and accuracy.
✦ Generated by Eureka AI based on patent content.
Abstract
The spindle's functionality is improved while maintaining a compact design for the headstock, which also features a workpiece ejection function. [Solution] A workpiece discharge device in one embodiment comprises a pressing rod, which is coaxially arranged inside the spindle and operates in the axial direction to press the workpiece and discharge it from the spindle, and a cylinder, which is arranged inside the spindle and operates the pressing rod in the axial direction by the supply of fluid pressure. The pressing rod is formed with an internal passage through which coolant supplied from a coolant supply device flows, and is configured to supply coolant toward the workpiece held by the spindle.
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