公开(公告)号：WO1996005012A1

公开(公告)日：1996-02-22

申请号：PCT/US1995007413

申请日：1995-06-09

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  LEWIS, David, L. ,  WIGGINS, Keith

IPC: B23B31/20

CPC classification number: B23B31/201 ,  Y10T279/17512 ,  Y10T279/17581 ,  Y10T279/3493

Abstract: A collet chuck (1) having a chuck body (3), a collet (11) disposed in the body (3), a nose ring (23) for radially compressing the collet (11), and a locknut (30) for axially moving the nose ring (23) into compressive engagement with the collet (11) is provided with a bearing assembly (45) disposed between the nose ring (23) and the collet (11) which loads compressive forces in a direction which is advantageously parallel to the axis of rotation (A) of the chuck. Both the locknut (30) and the nose ring (23) include flange portions (27, 43) that confront each other with opposing surfaces (47, 49) that are complementary in shape to the spherical profile of the ball bearings (50) and which traverse a line (L) parallel to the axis of rotation (A) of the chuck. The collet chuck (1) further includes O-rings (61, 65) disposed between the nose ring (23) and the locknut (30) both in front of and behind the ball bearings (50) for sealing the bearing assembly (45) against dust and debris and retaining lubricant. Finally, the portion of the nose ring (23) which wedgingly engages the collet (11) to compress it inwardly is undercut with a groove (72) in order to enhance the compliance between the nose ring (23) and the collet (11), thus providing a more uniform radial compressive force around the collet (11) which in turn results in improved gripping characteristics.

Abstract translation: 具有卡盘主体（3），设置在主体（3）中的夹头（11））的夹头卡盘（1），用于径向压缩夹头（11）的鼻环（23）和用于轴向 将鼻环（23）移动成与夹头（11）压缩接合时设置有设置在鼻环（23）和夹头（11）之间的轴承组件（45），该轴承组件（45）在有利地平行的方向上承载压缩力 相对于卡盘的旋转轴线（A）。 锁紧螺母（30）和鼻环（23）都包括凸缘部分（27,43），所述凸缘部分彼此面对相对的表面（47,49），所述相对表面的形状与球轴承（50）的球形形状互补， 其横过与卡盘的旋转轴线（A）平行的线（L）。 所述夹头卡盘（1）还包括在所述滚珠轴承（50）的前方和后方设置在所述前环（23）和所述锁紧螺母（30）之间的O形环（61,65），用于密封所述轴承组件（45） 防止灰尘和碎屑，并保留润滑剂。 最后，为了增强鼻环（23）和夹头（11）之间的顺应性，将凹入部（72）与凹槽（72）底切，使套筒（11）楔紧地接合夹头（11）的部分鼻环（23） ，从而提供围绕夹头（11）的更均匀的径向压缩力，这又导致改进的夹持特性。

公开(公告)号：EP0775034A1

公开(公告)日：1997-05-28

申请号：EP95922296.0

申请日：1995-06-09

Applicant: KENNAMETAL INC.

Inventor： LEWIS, David, L. ,  WIGGINS, Keith

IPC: B23B31

CPC classification number: B23B31/201 ,  Y10T279/17512 ,  Y10T279/17581 ,  Y10T279/3493

Abstract: A collet chuck (1) having a chuck body (3), a collet (11) disposed in the body (3), a nose ring (23) for radially compressing the collet (11), and a locknut (30) for axially moving the nose ring (23) into compressive engagement with the collet (11) is provided with a bearing assembly (45) disposed between the nose ring (23) and the collet (11) which loads compressive forces in a direction which is advantageously parallel to the axis of rotation (A) of the chuck. Both the locknut (30) and the nose ring (23) include flange portions (27, 43) that confront each other with opposing surfaces (47, 49) that are complementary in shape to the spherical profile of the ball bearings (50) and which traverse a line (L) parallel to the axis of rotation (A) of the chuck. The collet chuck (1) further includes O-rings (61, 65) disposed between the nose ring (23) and the locknut (30) both in front of and behind the ball bearings (50) for sealing the bearing assembly (45) against dust and debris and retaining lubricant. Finally, the portion of the nose ring (23) which wedgingly engages the collet (11) to compress it inwardly is undercut with a groove (72) in order to enhance the compliance between the nose ring (23) and the collet (11), thus providing a more uniform radial compressive force around the collet (11) which in turn results in improved gripping characteristics.

公开(公告)号：EP1853401B1

公开(公告)日：2012-05-30

申请号：EP06736355.6

申请日：2006-02-27

Applicant: Kennametal, Inc.

Inventor： OSHNOCK, Robert, E. ,  MCCORMICK, Michael, R. ,  ERICKSON, Robert, A. ,  WIGGINS, Keith

IPC: B23B31/20

CPC classification number: B23B31/20 ,  B23B2231/201 ,  Y10T29/49876 ,  Y10T29/53704 ,  Y10T279/17 ,  Y10T279/17299 ,  Y10T279/17504 ,  Y10T279/17538

Abstract: A collet and lock nut assembly (10) includes a collet (12) for receiving a cutting tool shank (16) and a lock nut (14) for creating a gripping force between the collet (12) and the shank (16). The collet (12) has a nose portion (24) and a body portion (26) separated by an annular groove (28). The lock nut (14) has a concentric bore (48) with a plurality of retention tabs (72) and a corresponding number of clear portions (74). The collet and lock nut assembly (10) can be easily assembled by inserting at least one retention tab (72) within the groove (28) of the collet (12), and then applying pressure to the collet (12) such that the remaining retention tabs (72) of the lock nut (14) are received within the groove (28) of the collet (12) to place the assembly (10) in a locked position. The collet (12) and cutting tool shank (16) can be drawn from the tool holder (18) by applying rotational torque to the lock nut (14). The collet (12) is easily removed from the lock nut (14) by applying pressure in any circumferential, lateral direction against the collet (12).

公开(公告)号：EP0775034B1

公开(公告)日：2000-03-15

申请号：EP95922296.9

申请日：1995-06-09

Applicant: KENNAMETAL INC.

Inventor： LEWIS, David, L. ,  WIGGINS, Keith

IPC: B23B31/20

CPC classification number: B23B31/201 ,  Y10T279/17512 ,  Y10T279/17581 ,  Y10T279/3493

Abstract: A collet chuck (1) having a chuck body (3), a collet (11) disposed in the body (3), a nose ring (23) for radially compressing the collet (11), and a locknut (30) for axially moving the nose ring (23) into compressive engagement with the collet (11) is provided with a bearing assembly (45) disposed between the nose ring (23) and the collet (11) which loads compressive forces in a direction which is advantageously parallel to the axis of rotation (A) of the chuck. Both the locknut (30) and the nose ring (23) include flange portions (27, 43) that confront each other with opposing surfaces (47, 49) that are complementary in shape to the spherical profile of the ball bearings (50) and which traverse a line (L) parallel to the axis of rotation (A) of the chuck. The collet chuck (1) further includes O-rings (61, 65) disposed between the nose ring (23) and the locknut (30) both in front of and behind the ball bearings (50) for sealing the bearing assembly (45) against dust and debris and retaining lubricant. Finally, the portion of the nose ring (23) which wedgingly engages the collet (11) to compress it inwardly is undercut with a groove (72) in order to enhance the compliance between the nose ring (23) and the collet (11), thus providing a more uniform radial compressive force around the collet (11) which in turn results in improved gripping characteristics.