WO2001047658A1 - A compensator for multi-tool boring bar - Google Patents
A compensator for multi-tool boring bar Download PDFInfo
- Publication number
- WO2001047658A1 WO2001047658A1 PCT/US2000/035415 US0035415W WO0147658A1 WO 2001047658 A1 WO2001047658 A1 WO 2001047658A1 US 0035415 W US0035415 W US 0035415W WO 0147658 A1 WO0147658 A1 WO 0147658A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive spindle
- spindle
- respect
- inner drive
- tool
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/03—Boring heads
- B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
- B23B29/03432—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing
- B23B29/03446—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing by means of inclined planes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/03—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/83—Tool-support with means to move Tool relative to tool-support
- Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/83—Tool-support with means to move Tool relative to tool-support
- Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
- Y10T408/858—Moving means including wedge, screw or cam
- Y10T408/8588—Axially slidable moving-means
- Y10T408/85892—Screw driven wedge or cam
- Y10T408/85894—Annular wedge-collar
- Y10T408/858945—Axially spaced tool-retaining collars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/10—Process of turning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/12—Radially moving rotating tool inside bore
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2531—Carriage feed
- Y10T82/2533—Control
Definitions
- This invention relates to mechanically driven tool compensation, and more particularly, to a tool compensation method and apparatus for a cutting tool having a plurality of tool cartridges or body members to be moved radially with respect to a rotating axis of the cutting tool.
- Electrically driven tool compensators are known for moving a tool between a working position and a retracted position in combination with gauging equipment which signals a predetermined increment of tool travel each time tool adjustment is needed.
- the tool is moveable radially outward and inward in response to axial movements of a draw bar.
- An electric motor with a gear reducer drives a screw nut assembly connected to the draw bar so that the draw bar is moved back and forth along the longitudinal axis of the draw bar, where the direction of movement is determined by the direction of rotation of the motor.
- the nut is formed to a cylindrical shape and has an interior cavity with a threaded opening.
- the drive nut is slidably mounted within the housing cavity and a draw bar assembly is removably affixed to the nut so that the draw bar moves axially as the nut rotates.
- a boring bar is conventionally secured to the draw bar and is operable to provide for radially inward and outward movement of a cutting tool.
- a cam on the boring bar is operated in response to axial movement of the draw bar in one direction to flex a strip member and move the tool radially outwardly toward the workpiece.
- the amount of adjustment permitted in known tool compensator configurations is less than the degree of movement desired. In particular, if additional movement could be provided more intricate profiles could be cut. Additional movement could also provide more efficient cutting operation, by allowing multiple cuts to be simultaneously performed at different radial positions at the same time. Accuracy, reliability, and repeatability of the positioning movement of the radially moveable body member is also desirable.
- the known boring bar configurations can provide radial adjustment of a single cutting tool, or simultaneous adjustment of a plurality of cutting tools. Uneven rates of wear can occur on the cutting edges of a multiple cutter machine tool. Simultaneous radial adjustment of all cutters does not accurately compensate for the differences in rates of wear between the various cutting surfaces. It would be desirable to provide an apparatus for radially adjusting the position of a plurality of tool cartridges individually and independently of one another.
- An apparatus radially adjust a position of a plurality of tool cartridges of a machine tool.
- the machine tool has rotatable, concentric, elongate, inner and outer drive spindles.
- the outer drive spindle has a plurality of pockets formed in the outer drive spindle exposing a portion of the inner drive spindle.
- a wedge is disposed in each pocket for movement relative to the longitudinal axis of the elongate drive spindle in response to relative rotation of the inner drive spindle with respect to the outer drive spindle when the inner drive spindle or boring bar is in a predetermined selectable position with respect to each pocket.
- Each wedge has either a threaded inner surface or other operable connection to the inner drive spindle, such as a groove for receiving a flange connected to a rotatable member or nut .
- the nut or rotatable member is disposed in each pocket .
- the rotatable member has either a threaded external surface operably engagable with the threaded inner surface of the corresponding wedge, or a threaded external surface operably engagable with the threaded inner surface of the outer drive spindle.
- the rotatable member is selectably operably engagable with a portion of the inner drive spindle when the inner drive spindle is in an operable longitudinal position corresponding to each pocket.
- a tool cartridge operably engages within each pocket of the outer drive spindle for radial movement relative to the longitudinal axis of the outer drive spindle in response to relative movement of the corresponding wedge.
- a ring spring is provided for urging each tool cartridge to operably engage each corresponding wedge .
- Each rotatable member has a central passage with a plurality of radially inwardly spaced splines or other suitable female coupling adapter extending along a predetermined axial length of the passage.
- the inner drive spindle is engagable through the central passage and has a plurality of longitudinally spaced, progressively staggered, gear portions or other appropriate male coupling adapter operably engagable with the corresponding female coupling adapter.
- the male or gear portions are selectively engagable with the plurality of inwardly directed splines or female portions along individual axial lengths of each rotatable member.
- Different combinations of gear portions and splines, or male portions and female portions operably align with one another at individual, discreet, predetermined longitudinal positions of the inner drive spindle as the inner drive spindle is moved axially with respect to the outer drive spindle.
- only one single combination of male and female portions are operably engagable with one another at any individual discreet predetermined longitudinal position of the inner drive spindle during axial movement between a first end limit of travel and a second end limit of travel.
- This configuration provides the ability to selectably adjust the radial position of each individual tool cartridge independent of one another through longitudinal and rotational manipulation of the inner drive spindle or boring bar with respect to the outer drive spindle.
- a method according to the present invention adjusts radial positions of a plurality of tool cartridges of a machine tool .
- the machine tool has rotatable, concentric, elongate, inner and outer drive spindles.
- the outer drive spindle has a plurality of pockets formed in the outer drive spindle exposing a portion of the inner drive spindle.
- the method includes the step of moving a wedge disposed in each pocket relative to the longitudinal axis of the elongate inner drive spindle in response to relative rotation of the inner drive spindle with respect to the outer drive spindle when the inner drive spindle is in a predetermined selectable position with respect to each pocket.
- Each wedge includes either a threaded inner surface operably engagable with a portion of the inner drive spindle through a rotatable member or nut, or other operable connection to the inner drive spindle, such as a groove for receiving a flange connected to the rotatable member or nut.
- the method also includes the step of operably engaging either a threaded external surface of a rotatable member disposed in each pocket with the threaded inner surface of the corresponding wedge, or a threaded external surface of a rotatable member disposed in each pocket with the threaded inner surface of the outer drive spindle.
- the rotatable member selectively operably engages with a portion of the inner drive spindle when the inner drive spindle is in an operable longitudinal position corresponding to that particular pocket.
- the method also includes the step of radially moving a tool cartridge operably engaged within each pocket of the inner drive spindle relative to the longitudinal axis of the spindle in response to relative movement of the corresponding wedge .
- Each tool cartridge is urged to operably engage each corresponding wedge with a ring spring, or any suitable substitute.
- the method according to the present invention can also include the step of selectively adjusting the radial position of each individual tool cartridge independently of one another through longitudinal and rotational manipulation of the inner drive spindle with respect to the outer drive spindle.
- the method can also include the step of moving the inner drive spindle longitudinally to operably engage a male coupling portion of the inner drive spindle with a corresponding complementary female coupling portion of a selected one of the rotatable members, and driving the rotatable member in rotation with the inner drive spindle through the operably engaged complementary male and female portions of the inner drive spindle and the rotatable member.
- Figures 1A, IB, 1C, and ID are detailed cross- sectional views of an apparatus according to the present invention for radially adjusting the positions of a plurality of tool cartridges individually and independently of one another;
- Figure 2 is a simplified schematic view of a plurality of position sensors, where one sensor is provided for each tool cartridge for generating at least one signal to a controller for controlling the relative rotation and longitudinal movement of the inner drive spindle with respect to the outer drive spindle in response to at least one input signal;
- Figure 3 is a detailed cross-sectional view of an apparatus according to the present invention for radially adjusting the position of at least one tool cartridge individually and independently of other tool cartridges;
- Figure 4 is a cross-sectional view taken as shown in Fig. 3.
- Figure 5 is an exploded perspective view of the apparatus illustrated in Figs. 3 and 4.
- An apparatus 10 radially adjusts the position of a plurality of tool cartridges 12a, 12b, 12c, 12d of a machine tool 14.
- the machine tool 14 has rotatable, concentric, elongate, inner and outer drive spindles 16, 18 respectively.
- the outer drive spindle 18 includes a plurality of pockets 20a, 20b, 20c, 20d formed in the outer drive spindle 18 exposing a portion of the boring bar or inner drive spindle 16.
- a wedge 22a, 22b, 22c, 22d is disposed in each corresponding pocket 20a, 20b, 20c, 20d for movement relative to the longitudinal axis of the elongate inner drive spindle 16 in response to relative rotation of the inner drive spindle 16 with respect to the outer drive spindle 18 when the inner drive spindle 16 is in a predetermined selectable position with respect to each pocket 20a, 20b, 20c, 20d.
- Each wedge 22a, 22b, 22c, 22d has either a threaded inner surface 24a, 24b, 24c, 24d respectively, or other operable connection to the inner drive spindle, such as a groove for receiving an annular flange connected to the rotatable member or nut 26a, 26b, 26c, 26d.
- the nut or rotatable member 26a, 26b, 26c, 26d is disposed in each corresponding pocket 20a, 20b, 20c, 20d.
- Each rotatable member 26a, 26b, 26c, 26d has a threaded external surface 28a, 28b, 28c, 28d operably engagable with either the corresponding threaded inner surface 24a, 24b, 24c, 24d of the corresponding wedge 22a, 22b, 22c, 22d, or a corresponding threaded inner surface of the outer drive spindle 18.
- Each rotatable member 26a, 26b, 26c, 26d is selectively, operably engagable with a portion 30a, 30b, 30c, 30d of the inner drive spindle 16, when the inner drive spindle 16 is in an operable distinct longitudinal position corresponding to each individual pocket 20a, 20b, 20c, 20d.
- Each nut or rotatable member 26a, 26b, 26c, 26d has a central passage 32a, 32b, 32c, 32d allowing passage of the boring bar or inner drive spindle 16.
- Each central passage 32a, 32b, 32c, 32d includes a female coupling portion or a plurality of radially inwardly directed splines 34a, 34b, 34c, 34d respectively extending along a predetermined axial length of the central passage.
- the boring bar or inner drive spindle 16 is engagable through the coaxially aligned central passages 32a, 32b, 32c, 32d of the rotatable members 26a, 26b, 26c, 26d.
- the inner drive spindle 16 includes a plurality of longitudinally spaced, progressively staggered, male coupling portions or gear portions 36a, 36b, 36c, 36d selectively individually engagable with the female coupling portion or the plurality of corresponding inwardly directed splines 34a, 34b, 34c, 34d, respectively, along individual axial lengths of each rotatable member 26a, 26b, 26c, 26d.
- male and female coupling portions such as gear portions 36a, 36b, 36c, 36d and splines 34a, 34b, 34c, 34d, operably align with one another at individual, discreet, predetermined longitudinal positions 38a, 38b, 38c, 38d of the inner drive spindle 16, as the inner drive spindle 16 is moved axially with respect to the outer drive spindle 18.
- the first gear portion 36a is operably engaged with the first spline portion 34a, while the remaining gear portions are longitudinally offset from the corresponding spline portions by varying longitudinal distances.
- the rotatable member or nut 26a is rotated to adjust the tool cartridge 12a by movement of the corresponding wedge 22a.
- the first gear portion 36a and corresponding spline portion 34a move out of engagement with one another to the position illustrated in phantom as 38b.
- the second gear portion 36b comes into operable contact with the spline portion 34b of the rotatable member or nut
- the remaining gear portions 36a, 36b, 36d and spline portions 34a, 34b, 34d are inoperable with respect to one another when the inner drive spindle is in the longitudinal position 38c.
- the male portion or gear portion 36d operably engages with the female portion or spline portion 34d to drive the rotatable member or nut 26d in rotation in response to rotation of the inner drive spindle 16.
- Each tool cartridge 12a, 12b, 12c, 12d is operably engaged within each corresponding pocket 20a, 20b, 20c, 20d of the outer drive spindle 18 for radial movement relative to the longitudinal axis of the outer drive spindle 18 in response to relative movement of the corresponding wedge 22a, 22b, 22c, 22d.
- a corresponding ring spring 40a, 40b, 40c, 40d, or suitable substitute, is provided for urging each tool cartridge 12a, 12b, 12c, 12d to operably engage with each corresponding wedge 22a, 22b, 22c, 22d.
- only one single combination of male and female coupling portions such as gear portion 36a, 36b, 36c, 36d and corresponding spline portion 34a, 34b, 34c, 34d, operably engage with one another at any individual discreet predetermined longitudinal position 38a, 38b, 38c, 38d of the inner drive spindle 16 during axial movement between a first end limit of movement and a second end limit of movement.
- the relative position of the male coupling portions or gear portions and corresponding female coupling portions or spline portions can be provided to permit simultaneous adjustment of the radial position of two or more individual tool cartridges .
- Each rotatable member or nut 26a, 26b, 26c, 26d is held in a longitudinally fixed position relative to the outer drive spindle 18.
- the inner drive spindle 16 is engagable through the central passage 32a, 32b, 32c, 32d, and allows for relative rotational movement and longitudinal movement of the inner drive spindle 16 with respect to the corresponding rotatable members 26a, 26b, 26c, 26d.
- the apparatus 10 can include a first drive 42 for rotating the inner drive spindle 16, a second drive 44 for rotating the outer drive spindle 18, and a third drive 46 for moving the inner drive spindle 16 longitudinally with respect to the outer drive spindle 18.
- a controller 48 controls the relative rotation and longitudinal movement of the inner drive spindle 16 and the outer drive spindle 18 in response to at least one input signal.
- the input signal can be obtained from a user input device, such as a keyboard 50.
- the input signal can include one or more sensors, such as a rotational speed sensor 52 to monitor the rotation of the outer drive spindle 18, and/or a rotational speed sensor 54 for monitoring the rotation of the inner drive spindle 16, and/or a longitudinal position sensor 56 for monitoring the longitudinal position of the inner drive spindle 16, and/or at least one radial position sensor 58a, 58b, 58c, 58d for monitoring the radial position of at least one tool cartridge 12a, 12b, 12c, 12d, or the tools attached thereto.
- Input signals can also be provided from the first drive 42, and/or second drive 44, and/or third drive 46 to the controller 48.
- One or more output signals can also be provided from the controller 48.
- the output signals can include a signal to control the first drive 42, and/or the second drive 44, and/or the third drive 46.
- an output signal can be provided from the controller 48 to a data output device 60, such as a storage unit, printer, display, network connection, or the like.
- the controller 48 can include a central processing unit for receiving at least one electronic input signal and for generating at least one processed electronic output signal in accordance with a control program stored in memory.
- the controller 48 can be programmed to compensate for wear of a tool connected to each tool cartridge 12a, 12b, 12c, 12d with relative rotational movement and longitudinal movement of the inner drive spindle 16 with respect to the outer drive spindle 18.
- the controller 48 can be programmed to adjustably position each tool cartridge 12a, 12b, 12c, 12d with respect to the outer drive spindle 18 during a machining operation in response to an input signal or during a calibration operation performed between machining operations.
- control of the cutter or other tool can provide the capability for forming more intricate machined profiles, and/or provide more efficient machining operations, and/or allow simultaneous machining operations to be performed at different radial positions at the same time, and/or to calibrate and adjust each cutting edge individually independent of the other cutting edges to more accurately compensate for variances in the rates of wear on multiple cutting edged tools.
- the structure of the present invention can be precisely formed to provide the desired accuracy, reliability, and repeatability of the positioning movement of each radially movable body member or tool cartridge 12a, 12b, 12c, 12d.
- the present invention is illustrated in Figs.
- each tool cartridge 12a, 12b, 12c, 12d can receive a corresponding cutter 62a, 62b, 62c, 62d that is indexable with respect to the corresponding tool cartridge 12a, 12b, 12c, 12d.
- any other tool required for a particular machining operation to be performed by the apparatus 10 can be mounted to the appropriate tool cartridge 12a, 12b, 12c, 12d, according to the present invention.
- Figs. 3-5 the preferred embodiment of an apparatus 110 according to the present invention radially adjusts the position of a plurality of tool cartridges 112 of a machine tool 114. For purposes of clarity, only one of a plurality of tool cartridges is shown.
- the machine tool 114 has rotatable, concentric, elongate, inner and outer drive spindles 116, 118 respectively.
- the outer drive spindle 118 includes a plurality of pockets 120 formed in the outer drive spindle 118 exposing a portion of the boring bar or inner drive spindle 116.
- a wedge 122 is disposed in each corresponding pocket 120 for movement relative to the longitudinal axis of the elongate inner drive spindle 116 in response to relative rotation of the inner drive spindle 116 with respect to the outer drive spindle 118 when the inner drive spindle 116 is in a predetermined selectable position with respect to each pocket 120.
- Each wedge 122 has either a threaded inner surface or other operable connection to the inner drive spindle 116, such as a groove 124 for receiving an annular flange 170 connected to the rotatable member or nut 126.
- the nut or rotatable member 126 is disposed in each corresponding pocket 120.
- Each rotatable member 126 has a threaded external surface 128 operably engagable with either the corresponding threaded inner surface of the corresponding wedge 122, or the corresponding threaded inner surface 172 of the outer drive spindle 118.
- Each rotatable member 126 is selectively, operably engagable with a portion 130 of the inner drive spindle 116, when the inner drive spindle 116 is in an operable distinct longitudinal position corresponding to each individual pocket 120.
- Each nut or rotatable member 126 has a central passage 132 allowing passage of the boring bar or inner drive spindle 116.
- Each central passage 132 includes a female coupling portion or a plurality of radially inwardly directed splines 134 extending along a predetermined axial length of the central passage.
- the boring bar or inner drive spindle 116 is engagable through the coaxial aligned central apertures 132 of the rotatable members 126.
- the inner drive spindle 116 includes a plurality of longitudinally spaced, progressively staggered, male coupling portions or gear portions 136 selectively individually engagable with the female coupling portion or the plurality of corresponding inwardly directed splines 134 along individual axial lengths of each rotatable member 126.
- the different combinations of male and female coupling portions, such as gear portions 136 and splines 134 operably engage with one another at individual, discreet, predetermined longitudinal positions 138 of the inner drive spindle
- only one single combination of male and female coupling portions such as gear portion 136 and corresponding spline portion 134 operably engage with one another at any individual discreet predetermined longitudinal position 138 of the inner drive spindle 116 during axial movement between a first end limit of movement and a second end limit of movement.
- Relative rotation of the inner drive spindle 116 with respect to the outer drive spindle 118 when the gear portion 136 and corresponding spline portion 134 are operably engaged with one another causes the rotatable member or nut 126 to rotate with the inner drive spindle 116.
- the differential rate of rotation between the nut 126 and the outer drive spindle 118 causes the threaded external surface 128 to operably engage with the inner threaded surface 170 of the outer drive spindle 118 to cause the nut or rotatable member 126 to move longitudinally.
- the corresponding wedge 122 is driven longitudinally in response to movement of the nut 126 through operable engagement of the flange 172 within groove 124. Longitudinal movement of the wedge 122 causes corresponding radial movement of the tool cartridge 112, since the tool cartridge 112 is held in operable engagement with the wedge 122 by ring spring 140.
- a cutter 162 can be connected to the tool cartridge 112.
- the present invention also encompasses a method for radially adjusting individual positions of a plurality of tool cartridges 12a, 12b, 12c, 12d of a machine tool 14.
- the machine tool 14 includes rotatable, concentric, elongate, inner and outer drive spindles 16, 18 respectively.
- the outer drive spindle 18 includes a plurality of pockets 20a, 20b, 20c, 20d, exposing corresponding portions of the inner drive spindle 16.
- the method further includes the steps of moving the wedges 22a, 22b, 22c, 22d longitudinally within the corresponding pockets 20a, 20b, 20c, 20d relative to the axis of the elongate inner drive spindle 16 in response to relative rotation of the inner drive spindle 16 with respect to the outer drive spindle 18, when the inner drive spindle 16 is in operable engagement with the corresponding nut or rotatable member 26a, 26b, 26c, 26d.
- This can best be seen by comparing the relative positions of the male portion or gear portions 36a, 36b, 36c, 36d of the inner drive spindle 16 in the longitudinal positions identified as 38a, 38b, 38c, 38d in Figs. 1A, IB, 1C, and ID.
- Each wedge is capable of moving from a first end limit of travel to a second end limit of travel and is provided with either a threaded inner surface operably engagable with the outer threaded surface of the nut or rotatable member, or other operable connection to the inner drive spindle, such as a groove for receiving an annular flange connected to the rotatable member or nut .
- the body member or tool cartridge 12a, 12b, 12c, 12d is operably engaged within the pocket 20 of the outer drive spindle 18 for radial movement relative to the longitudinal axis of the outer drive spindle 18 in response to relative movement of the corresponding wedge 22a, 22b, 22c, 22d respectively.
- the ring spring 40a, 40b, 40c, 40d is provided for urging the corresponding tool cartridge 12a, 12b, 12c, 12d into operable engagement with the corresponding wedge 22a, 22b, 22c, 22d.
- the spring 40a, 40b, 40c, 40d preferably is selected with sufficient strength to maintain operable engagement between the body member or tool cartridge 12a, 12b, 12c, 12d, corresponding wedge 22a, 22b, 22c, 22d, and corresponding nut or rotatable member 26a, 26b, 26c, 26d while rotating at the maximum operational speed of the machine tool 1 .
- the method according to the present invention also includes the steps of rotating the inner drive spindle 16 with a first drive 42, rotating the outer drive spindle 18 with a second drive 44, moving the inner drive spindle 16 longitudinally with respect to the outer drive spindle 18, and controlling the relative rotation and longitudinal movement of the inner drive spindle 16 and the outer drive spindle 18 in response to at least one input signal with a controller 48.
- the longitudinal movement of the inner drive spindle 16 with respect to the outer drive spindle 18 can be accomplished with a third drive 46.
- the one or more input signals can be generated by one or more devices selected from a group including a keyboard or data input device 50, speed sensor 52, 54, longitudinal position sensor 56, drive feedback signal 42, 44, 46, and/or at least one radial position sensor 58a, 58b, 58c, 58d.
- the method can also include the step of receiving at least one electronic input signal with a central processing unit, and generating at least one processed electronic output signal in accordance with a control program stored in memory.
- the step of compensating for tool wear with relative longitudinal and rotational movement or manipulation of the inner drive spindle 16 with respect to the outer drive spindle 18 can also be included in the method of the present invention.
- the step of adjustably positioning each individual tool cartridge independent of one another with respect to the outer drive spindle 18 during a machining operation in response to an input signal with the controller 48 can be included in the method of the present invention.
- the present method includes connecting a cutter 62a, 62b, 62c, 62d to the corresponding tool cartridge or body member 12a, 12b, 12c, 12d. Removing and replacing the cutter 62a, 62b, 62c, 62d with respect to the corresponding tool cartridge 12a, 12b, 12c, 12d is also envisioned in the steps of the present method.
- the method also encompasses indexing of the cutter 62a, 62b, 62c, 62d with respect to the body member or tool cartridge 12a, 12b, 12c, 12d.
- first drive 42 for the inner drive spindle 16 a second drive 44 for the outer drive spindle 18 and a third drive 46 for the longitudinal movement of the inner drive spindle 18. It is envisioned that a single drive could be provided for rotation of the inner drive spindle 16 and the outer drive spindle 18, while incremental, differential movement of the inner drive spindle 16 with respect to the outer drive spindle 18 could be provided with a second drive. Further, it is envisioned that the present invention can include an automatic tool compensation sequence between machining operations on the workpieces .
- At least one radial position sensor 58a, 58b, 58c, 58d can provide a feedback signal to the controller 48, or central processing unit, to enable accurate adjustment of one or more corresponding cutters 62a, 62b, 62c, 62d respectively and individually position each cutter independently prior to the start of the next machining operation.
- the compensating adjustment step can occur during idle time of the machining tool 14 while a workpiece or part is removed from the workstation and a new workpiece or part is delivered.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Automatic Control Of Machine Tools (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001548237A JP2003518442A (en) | 1999-12-28 | 2000-12-28 | Correction device for multiple tool boring bars |
EP00988391A EP1165280A4 (en) | 1999-12-28 | 2000-12-28 | A compensator for multi-tool boring bar |
AU24604/01A AU2460401A (en) | 1999-12-28 | 2000-12-28 | A compensator for multi-tool boring bar |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/473,437 US6331093B1 (en) | 1999-12-28 | 1999-12-28 | Compensator for multi-tool boring bar |
US09/473,437 | 1999-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001047658A1 true WO2001047658A1 (en) | 2001-07-05 |
Family
ID=23879523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/035415 WO2001047658A1 (en) | 1999-12-28 | 2000-12-28 | A compensator for multi-tool boring bar |
Country Status (5)
Country | Link |
---|---|
US (1) | US6331093B1 (en) |
EP (1) | EP1165280A4 (en) |
JP (1) | JP2003518442A (en) |
AU (1) | AU2460401A (en) |
WO (1) | WO2001047658A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130167695A1 (en) * | 2010-09-24 | 2013-07-04 | Rudolf Wiest | Tool head for use in machine tools |
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DE102005024708A1 (en) * | 2005-05-30 | 2006-12-07 | Robert Bosch Gmbh | Housing part, in particular pump housing part |
EP2164664B1 (en) * | 2007-07-05 | 2014-10-08 | Sandvik, Inc. | Actuated material removal tool |
US8388277B2 (en) * | 2008-05-09 | 2013-03-05 | The Boeing Company | Internal chamfering device and method |
US9517511B1 (en) | 2008-05-09 | 2016-12-13 | The Boeing Company | Internal chamfering device and method |
RU2424877C2 (en) * | 2009-08-20 | 2011-07-27 | Михаил Владимирович Ведель | Boring or reboring device |
US8561509B2 (en) | 2010-06-15 | 2013-10-22 | Kennametal Inc. | Mechanical-activated ID grooving tool |
US8408849B2 (en) * | 2010-06-15 | 2013-04-02 | Kennametal Inc. | Pressure-activated ID grooving tool |
US8573904B2 (en) | 2011-06-14 | 2013-11-05 | Kennametal Inc. | Grooving insert |
JP5905465B2 (en) * | 2011-07-28 | 2016-04-20 | 東芝機械株式会社 | Boring machine |
CN102615300B (en) * | 2012-03-26 | 2013-07-24 | 华中科技大学 | Elastic boring bar capable of realizing automatic adjustment for radial direction of boring cutter |
EP3222375B1 (en) * | 2016-03-24 | 2021-08-18 | Sandvik Intellectual Property AB | A boring tool |
KR102360161B1 (en) | 2017-05-29 | 2022-02-09 | 현대자동차주식회사 | Spindle apparatus and method for operating the same |
RU2754218C1 (en) * | 2017-11-14 | 2021-08-30 | Четокорпорейшн, С.А. | Apparatus for machine processing of internal channels and corresponding method for machine processing |
US11110525B2 (en) * | 2019-05-24 | 2021-09-07 | The Boeing Company | Active-pressure hole finishing tool |
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US1861928A (en) * | 1930-01-30 | 1932-06-07 | Leo J Loeffelman | Expansion cutter |
US2136350A (en) * | 1937-02-15 | 1938-11-08 | Zim Mfg Company | Cylinder ridge reamer |
DE853987C (en) * | 1943-02-02 | 1952-10-30 | Hans Still | Fresh water or circulation cooling for stationary internal combustion engines |
FR2033145A5 (en) * | 1969-03-04 | 1970-11-27 | Olivetti & Co Spa | |
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JPS6135365Y2 (en) * | 1980-04-30 | 1986-10-15 | ||
JPS5761407A (en) | 1980-07-10 | 1982-04-13 | Toyoda Mach Works Ltd | Boring quill |
US4615652A (en) | 1984-12-31 | 1986-10-07 | Gte Valeron Corporation | Cutting tool compensator for rotary machine tool |
JP2879151B2 (en) | 1989-07-04 | 1999-04-05 | 富士精工株式会社 | Cutting equipment with adjustable blade position |
US5832797A (en) | 1996-08-30 | 1998-11-10 | Programmable Tracing Incorporated | Rotary machine tool |
US6312200B1 (en) * | 1999-12-01 | 2001-11-06 | Ex-Cello Machine Tools, Inc. | Method and apparatus for adjusting a tool cartridge, such as a cutter body |
-
1999
- 1999-12-28 US US09/473,437 patent/US6331093B1/en not_active Expired - Fee Related
-
2000
- 2000-12-28 JP JP2001548237A patent/JP2003518442A/en active Pending
- 2000-12-28 WO PCT/US2000/035415 patent/WO2001047658A1/en not_active Application Discontinuation
- 2000-12-28 EP EP00988391A patent/EP1165280A4/en not_active Withdrawn
- 2000-12-28 AU AU24604/01A patent/AU2460401A/en not_active Abandoned
Patent Citations (2)
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US2660242A (en) * | 1951-12-12 | 1953-11-24 | United States Steel Corp | Knife-adjusting means for rotary shears |
US3343243A (en) * | 1964-11-13 | 1967-09-26 | Fischer Ag Georg | Adjusting arrangement for machine tools |
Non-Patent Citations (1)
Title |
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See also references of EP1165280A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130167695A1 (en) * | 2010-09-24 | 2013-07-04 | Rudolf Wiest | Tool head for use in machine tools |
US9162291B2 (en) * | 2010-09-24 | 2015-10-20 | Komet Group Gmbh | Tool head for use in machine tools |
Also Published As
Publication number | Publication date |
---|---|
AU2460401A (en) | 2001-07-09 |
US6331093B1 (en) | 2001-12-18 |
EP1165280A1 (en) | 2002-01-02 |
JP2003518442A (en) | 2003-06-10 |
EP1165280A4 (en) | 2003-03-26 |
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