Disclosed is high-speed electric spindle gas sealing structure for numerically controlled lathe
The utility model provides a high-speed electric spindle gas sealing structure for a numerically controlled lathe. Main shaft box body, a bearing seat is arranged in the spindle box body; a main shaftis supported in the bearing seat through a bearing; the front shaft shoulder end surface of the main...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
10.09.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The utility model provides a high-speed electric spindle gas sealing structure for a numerically controlled lathe. Main shaft box body, a bearing seat is arranged in the spindle box body; a main shaftis supported in the bearing seat through a bearing; the front shaft shoulder end surface of the main shaft is separated from the bearing inner ring through a main shaft spacer bush; a front flange issleeved outside the main shaft spacer bush; a sealing ring is sleeved outside a front shaft shoulder of the main shaft; the front end of the spindle is connected with a hydraulic chuck; a waterproofcover is arranged between the hydraulic chuck and the spindle box body; a primary air pressure rotary sealing structure is arranged between the inner circle of the front end of the waterproof cover and the outer circle of the hydraulic chuck; a two-stage air pressure rotary sealing structure is arranged between the sealing ring and a front shaft shoulder of the main shaft, a three-stage air pressure rotary sealing structure |
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Bibliography: | Application Number: CN201821918623U |