Semi -automatic chuck is used to lathe

The utility model relates to a semi -automatic chuck is used to lathe, by chuck procapsid (1), the chuck main part is formed in casing behind the chuck (2) and ante -chamber baffle (3), install at chuck procapsid (1) front end voussoir (4), jack catch (5) set up at voussoir (4) front end, set up lubricating oil passageway A (6) on voussoir (4), install in the chuck main part piston (7), piston (7) are connected with wedge dish (8), wedge dish (8) by chute and voussoir (4) sliding fit, casing (2) cooperation department sets up oil storage tank (10) behind wedge dish (8) and the chuck, the rear end of casing behind the chuck (2) sets up distribution dish (11), distribution dish (11) are gone up relative department with distribution dish bearing (12) and are set up machine oil interpolation mouthful (13), set up air inlet A (14) and air inlet B (15) on distribution dish (11). The utility model has the advantages of certainly, centering, simple structure, long -term performance is stable, and easy operation uses