公开(公告)号：EP0682585A1

公开(公告)日：1995-11-22

申请号：EP93923760.0

申请日：1993-10-01

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D. ,  PRESBY, Thomas, J.

IPC: B23C9 ,  B23B31 ,  B23Q11 ,  F16F15 ,  G01M1

CPC classification number: B23B31/201 ,  B23Q11/0035 ,  F16F15/322 ,  G01M1/36 ,  Y10T408/76 ,  Y10T409/303752 ,  Y10T409/304312 ,  Y10T464/50

Abstract: An apparatus and method for balancing a high speed rotary tool assembly (1) is provided. The apparatus includes a rotary tool holder (3) having an axis of rotation (11), a cutting tool retainer (13) in the rotary tool holder (3) having a lockring (23) that circumscribes the axis of rotation (11) of the holder (3), and a pair of axially spaced balancing rings (35a, 35b) for balancing the entire rotary tool assembly (1) which are rotatably mounted around bearing surfaces (37) circumscribing the lockring (23) so as to be angularly positionable around the axis of rotation (11) of the tool holder (3). In the method of the invention, the unbalance of the tool holder (3) and cutting tool (17) is determined, and then the rings (35a, 35b) are rotatably adjusted about the bearing surface (11) on lockring (23) to create an unbalance which cancels out the determined unbalance of the tool holder (3) assembly.

公开(公告)号：EP0643634A1

公开(公告)日：1995-03-22

申请号：EP93911221.0

申请日：1993-05-10

Applicant: KENNAMETAL INC.

Inventor： PRESBY, Thomas, J. ,  MOGILNICKI, Victor, D.

IPC: B23B31

CPC classification number: B23B31/202 ,  B23B2231/2005 ,  Y10S279/90 ,  Y10T279/17299 ,  Y10T408/957 ,  Y10T409/30952

Abstract: The present invention is a tool holder for receiving an endmill or similar tool. The tool holder includes a shank portion (14) adapted to fit into the spindle of a machine, and a closed end collet (16) integrally formed with the shank portion. The collet includes an axial bore (30) for receiving the tool and a plurality of resilient collet segments (34) for gripping the tool. The collet segments are separated by a plurality of axially extending slots (32) which terminate inwardly from the forward end of a collet. A continuous tie ring (36) extends around the forward end of a collet and joins the plurality of collet segments together. The continuous tie ring provides for increased radial stiffness at the forward end of the collet which improves accuracy and repeatability of tool location. A lock nut (40) threads onto the collet to collapse the collet segments radially inwardly to grip the tool.

公开(公告)号：EP0674564B1

公开(公告)日：2001-10-10

申请号：EP94902296.6

申请日：1993-11-18

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D. ,  MEACHUM, Donald, E.

IPC: B23Q5/22 ,  B23G1/46 ,  B23B31/08

CPC classification number: B23B31/086 ,  Y10T408/73

Abstract: A rotary tool connecting assembly (1) comprises an adapter receiver (15) for receiving and securing a tap (4), a chuck body (2) having one end which is detachably connectable to the spindle (3), and an opposing end having an axially aligned recess (9) for slidably receiving the adapter receiver (15), and a mechanism for transmitting torque from the chuck body (2) to the adapter receiver (15) while allowing the receiver (15) to freely axially slide within the recess (9) of the chuck body (2) that includes a plurality of linear roller bearings (107 a, b, c) disposed between a single flat wall (99) present on the side of the receiver (15) and a flat bearing wall (101) that defines a portion of the recess (9) in the chuck body (2).

公开(公告)号：EP0682585B1

公开(公告)日：1999-07-21

申请号：EP93923760.8

申请日：1993-10-01

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D. ,  PRESBY, Thomas, J.

IPC: B23C9/00 ,  B23B31/20 ,  B23Q11/00 ,  F16F15/32

CPC classification number: B23B31/201 ,  B23Q11/0035 ,  F16F15/322 ,  G01M1/36 ,  Y10T408/76 ,  Y10T409/303752 ,  Y10T409/304312 ,  Y10T464/50

Abstract: An apparatus and method for balancing a high speed rotary tool assembly (1) is provided. The apparatus includes a rotary tool holder (3) having an axis of rotation (11), a cutting tool retainer (13) in the rotary tool holder (3) having a lockring (23) that circumscribes the axis of rotation (11) of the holder (3), and a pair of axially spaced balancing rings (35a, 35b) for balancing the entire rotary tool assembly (1) which are rotatably mounted around bearing surfaces (37) circumscribing the lockring (23) so as to be angularly positionable around the axis of rotation (11) of the tool holder (3). In the method of the invention, the unbalance of the tool holder (3) and cutting tool (17) is determined, and then the rings (35a, 35b) are rotatably adjusted about the bearing surface (11) on lockring (23) to create an unbalance which cancels out the determined unbalance of the tool holder (3) assembly.

公开(公告)号：EP0742742B1

公开(公告)日：1998-09-30

申请号：EP95908562.2

申请日：1995-01-17

Applicant: KENNAMETAL INC.

Inventor： LEWIS, David, L. ,  MOGILNICKI, Victor, D. ,  PRESBY, Thomas, J.

IPC: B23B31/20 ,  B23B31/00

CPC classification number: B23B31/202 ,  B23B31/001 ,  B23B2231/2005 ,  B23B2250/12 ,  Y10T279/17299 ,  Y10T279/17504 ,  Y10T279/17581 ,  Y10T409/30952

Abstract: A toolholder (1) of the type including a collet (5) integrally formed with a shank (3) is provided with an interface between a locknut (7) and collet (13) which substantially reduces the torque required to turn the locknut (7) into a position which radially collapses the collet segments (17). In this interface, one of either the inner locknut surface (23) or the outer surfaces of the collet segments (17) includes an engaging portion (56) for wedgingly flexing the collet segments (17) inwardly when the locknut is turned, and a non-engaging portion (58) disposed between the engaging portion (56) and the shank mounted ends of the collet segments (17). The non-engaging portion (58) reduces the torque required to turn the locknut (7) by reducing the binding forces that would otherwise occur between the ends of the collet segments (17) and the inner locknut surface (23). To further reduce torque, the collet portion interconnecting the collet segments (17) with the shank (3) of the toolholder is rendered thinner by the provision of circumferential grooves (72, 76) that make the collet segments (17) more flexible. Sealing rings (66, 74, 81) are seated in grooves (68, 72, 76) present in the interior defined by the collet segments (17) in order to prevent errant flows of coolant or debris from collecting between the collet segments (17) and the tool shank (9) gripped thereby.

公开(公告)号：EP0712342B1

公开(公告)日：1997-04-16

申请号：EP94921495.1

申请日：1994-07-11

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D.

IPC: B23B31/20

CPC classification number: B23B31/202 ,  B23B2231/54 ,  Y10T279/17435 ,  Y10T279/17512

Abstract: A collet (10) is designed for a tool (200) having a cylindrical shank (202) and a square drive (204) at the rearward end of the cylindrical shank. The collet inludes a collet body (12) having a plurality of radially compressible collet segments (30). An axial bore (20) is formed in the collet body (12) for receiving the cylindrical shank (202) of the tool (200). The tool (200) is secured in the axial bore (20) by collapsing the collet segments (30) around the cylindrical shank (202) of the tool (200). A grip-forming slot (40) extends through a midsection (24) of the collet body (12) and communicates with the axial bore (20) so as to receive the square drive (204) of the tool (200) when the tool (200) is inserted into the axial bore (20). A pair of gripping surfaces (42) are formed on respective collet segments (30) on opposite sides of the grip-forming slot (40) for gripping opposed surfaces of the square drive (204) when the collet segments (30) are radially collapsed to prevent radial movement of the tool (200).

公开(公告)号：EP0712342A1

公开(公告)日：1996-05-22

申请号：EP94921495.0

申请日：1994-07-11

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D.

IPC: B23B31

CPC classification number: B23B31/202 ,  B23B2231/54 ,  Y10T279/17435 ,  Y10T279/17512

Abstract: A collet (10) is designed for a tool (200) having a cylindrical shank (202) and a square drive (204) at the rearward end of the cylindrical shank. The collet inludes a collet body (12) having a plurality of radially compressible collet segments (30). An axial bore (20) is formed in the collet body (12) for receiving the cylindrical shank (202) of the tool (200). The tool (200) is secured in the axial bore (20) by collapsing the collet segments (30) around the cylindrical shank (202) of the tool (200). A grip-forming slot (40) extends through a midsection (24) of the collet body (12) and communicates with the axial bore (20) so as to receive the square drive (204) of the tool (200) when the tool (200) is inserted into the axial bore (20). A pair of gripping surfaces (42) are formed on respective collet segments (30) on opposite sides of the grip-forming slot (40) for gripping opposed surfaces of the square drive (204) when the collet segments (30) are radially collapsed to prevent radial movement of the tool (200).

公开(公告)号：EP0674564A1

公开(公告)日：1995-10-04

申请号：EP94902296.0

申请日：1993-11-18

Applicant: KENNAMETAL INC.

Inventor： MOGILNICKI, Victor, D. ,  MEACHUM, Donald, E.

IPC: B23G1 ,  B23B31

CPC classification number: B23B31/086 ,  Y10T408/73

Abstract: A rotary tool connecting assembly (1) comprises an adapter receiver (15) for receiving and securing a tap (4), a chuck body (2) having one end which is detachably connectable to the spindle (3), and an opposing end having an axially aligned recess (9) for slidably receiving the adapter receiver (15), and a mechanism for transmitting torque from the chuck body (2) to the adapter receiver (15) while allowing the receiver (15) to freely axially slide within the recess (9) of the chuck body (2) that includes a plurality of linear roller bearings (107 a, b, c) disposed between a single flat wall (99) present on the side of the receiver (15) and a flat bearing wall (101) that defines a portion of the recess (9) in the chuck body (2).