| 摘要 |
FIELD: machine-tool manufacture. SUBSTANCE: internal surface of clamping ring 19 of quick-change chuck is provided with at least one more auxiliary recess 23 for interaction with cam, depth h<SB>1</SB> of which is less than depth h of radius recesses 20. Angle <EMI ID=0.38 HE=9 WI=3 TI=CHI> of its position is equal to or slightly less than angle of turn <EMI ID=0.39 HE=6 WI=3 TI=CHI> of clamping ring 19. In addition, blind surfaces 22 with profile angle of <EMI ID=0.40 HE=6 WI=3 TI=CHI> for interaction with projections 21 of clamping ring 19 are provided on shoulder 16 of cup 14. EFFECT: more effective construction. 2 cl, 3 dwge
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