A rotary joint and a timing matching fluid control method for a rotary joint
By designing a continuous through-hole and dynamic/static sealing components in the rotary joint, the problems of flow channel pressure loss and response delay in existing rotary joints are solved, enabling rapid switching of coolant and improving the adaptability of sealing components, thus meeting the coolant timing matching requirements of CNC machine tools.
Patent Information
- Application Number
- CN202610797441.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing rotary joints have throttling points and abrupt cross sections in their flow channel design, resulting in pressure loss and response delay when the coolant flows through them. The sealing components are not adaptable enough to low-pressure and high-pressure conditions, making it difficult to meet the precise control requirements of modern CNC machine tools for matching the timing of coolant supply and cutting needs.
A static housing and a rotating inner shaft assembly form a continuous through-hole for fluid flow. Combined with end face dynamic and static sealing components and bearing support components, throttling points and abrupt cross sections in the flow channel are eliminated. An elastic preload compensation component is used to adapt to fluid flow requirements across the entire pressure range, and a timing-matching fluid flow control method is used to precisely control the coolant supply.
It achieves rapid switching of cooling hydraulic pressure without delay, ensuring that pressure is quickly established during high-pressure cutting and smoothly transitioned during low-pressure holding, improving the working condition adaptability and service life of the sealing components, and meeting the precise control requirements of modern CNC machine tools for the timing matching of coolant supply and cutting needs.
Smart Images
Figure CN122401157A_ABST