公开(公告)号：US09839965B2

公开(公告)日：2017-12-12

申请号：US14826457

申请日：2015-08-14

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Kjell Englund

IPC: B23B29/04 ,  B23B31/40 ,  B23B31/26

CPC classification number: B23B31/4006 ,  B23B29/046 ,  B23B31/265 ,  B23B2231/0208 ,  B23B2231/24 ,  B23B2250/12 ,  B23B2260/02 ,  B23B2270/20 ,  Y10T409/309352 ,  Y10T409/309408 ,  Y10T409/30952

Abstract: A clamping device for releasably holding a tool holder shank is formed with an engagement bore in a rear end. The clamping device includes a housing having a mounting bore for receiving the tool holder shank; a drawbar being mounted reciprocally movable inside the housing and which in a forward end is provided with an engagement segment which is arranged to engage with an engagement formation inside the engagement bore of the tool holder shank, wherein the drawbar is in a rear portion formed with a drawbar aperture extending through the drawbar, and a cam shaft extending through the drawbar aperture and comprising a cam formation. The cam shaft is rotatably journalled in the housing and arranged to impart an axial displacement to the drawbar in relation to the housing by the cam formation when rotating the cam shaft. The cam shaft includes two identical cam formations, which are spaced apart by a recess, and the drawbar is on the inside of the aperture formed with a ridge on each side of the aperture which each fits in the recess of the cam shaft when rotating the same.

公开(公告)号：US09839963B2

公开(公告)日：2017-12-12

申请号：US14826450

申请日：2015-08-14

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Kjell Englund

IPC: B23B31/26 ,  B23B29/04 ,  B23B31/40 ,  B23B31/20

CPC classification number: B23B31/265 ,  B23B29/046 ,  B23B31/207 ,  B23B31/4006 ,  B23B31/4033 ,  B23B2231/24 ,  B23B2260/02 ,  B23B2260/034 ,  B23B2260/12 ,  Y10T279/1037 ,  Y10T279/17111 ,  Y10T409/309464

Abstract: A clamping device for releasably holding a tool holder shank is formed with an engagement bore in a rear end, and includes a housing having a bore in a forward end for receiving the tool holder shank, a drawbar reciprocally movable inside the housing and which in a forward end is provided with engagement means arranged to engage with an engagement formation inside the engagement bore of the tool holder shank, and which is formed with a drawbar aperture extending through the drawbar in a transverse direction of the same, and a cam shaft extending through the drawbar aperture. The cam shaft includes three cam formations and more precisely first and second spaced apart cam formations, which are journalled in seating apertures in the housing on opposite sides of the drawbar, and an intermediate third cam formation located between the first and second cam formations and positioned within the aperture of the drawbar. The drawbar is insertable into the bore from the forward end.