Chuck
The chuck design seals slide grooves with a front cover and seal members, addressing dust and grease issues, ensuring smooth operation and reduced maintenance, suitable for clean environments.
WO2025205478A1PCT designated stage Publication Date: 2025-10-02KITAGAWA IRON WORKS CO LTD
Patent Information
- Application Number
- PCT/JP2025/011159
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-25
- Filing Date
- 2025-03-21
- Publication Date
- 2025-10-02
AI Technical Summary
Technical Problem
Existing chucks allow dust particles and abrasive powder to enter the interior, leading to malfunction of the master jaw, and expose grease to centrifugal forces causing scattering, necessitating frequent maintenance.
Method used
A chuck design featuring slide grooves sealed by a front cover and seal members, with a seal member on the outer circumferential surface and a dust seal and X-ring to prevent dust entry and grease scattering, combined with a solid lubricant coating to maintain lubricity.
Benefits of technology
Prevents dust entry and grease scattering, ensuring smooth operation and reducing maintenance needs, suitable for clean environments like semiconductor polishing.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure JP2025011159_02102025_PF_FP_ABST
Abstract
Provided is a chuck that can prevent entry of dust such as abrasive powder and can also keep grease or the like from being scattered to the outside. The present invention provides a chuck that comprises a chuck body, a plurality of master jaws, a plurality of clamp jaws, a front cover, and a seal member. Each of a plurality of slide grooves is provided on a front side of the chuck body so as to extend from a center part to an outer circumferential surface in a radial direction that is orthogonal to an axis of rotation. The master jaws are fitted into the slide grooves so as to be capable of sliding therein. The clamp jaws are connected to the master jaws and grip a workpiece. The front cover is installed so as to seal the front side of the chuck body. The seal member seals the outer circumferential surface side of the slide grooves.
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Citation Information
Patent Citations
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WO2018092879A1
JP1972009184U
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JP1999226840A
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