Gear cutting – milling – or planing – Milling – With means to control temperature or lubricate
Reexamination Certificate
2011-01-25
2011-01-25
Cadugan, Erica E (Department: 3726)
Gear cutting, milling, or planing
Milling
With means to control temperature or lubricate
C409S233000, C409S231000, C285S013000, C285S098000, C137S580000
Reexamination Certificate
active
07874772
ABSTRACT:
The invention provides an improved drain structure of a cutting fluid supplied to a spindle of a milling spindle. The milling spindle100comprises a spindle20supported within a housing via a bearing16, and a drawbar24having a through coolant passage22. The cutting fluid C1passing through the rotary joint40and50is sent to the through coolant passage22, but a portion thereof is collected in a drain chamber110. When the pressure within the drain chamber rises, the drain device150pushes open the ball160resisting against the spring170, and the cutting fluid C1is discharged to the exterior.
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Ikuta Hiroki
Kimura Jojiro
Tazawa Hiroki
Cadugan Erica E
Renner , Otto, Boisselle & Sklar, LLP
Yamazaki Mazak Corporation
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