WO2023053850A1 - 工作機械 - Google Patents
工作機械 Download PDFInfo
- Publication number
- WO2023053850A1 WO2023053850A1 PCT/JP2022/033217 JP2022033217W WO2023053850A1 WO 2023053850 A1 WO2023053850 A1 WO 2023053850A1 JP 2022033217 W JP2022033217 W JP 2022033217W WO 2023053850 A1 WO2023053850 A1 WO 2023053850A1
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- WIPO (PCT)
- Prior art keywords
- unit
- turning
- tool
- rotary tool
- swivel
- Prior art date
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- 239000002826 coolant Substances 0.000 claims description 161
- 238000003754 machining Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 49
- 230000007246 mechanism Effects 0.000 description 33
- 238000000034 method Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000470 constituent Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
- B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
- B23Q39/025—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder
- B23Q39/026—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder simultaneous working of toolheads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
-
- 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
- B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
- B23B3/22—Turning-machines or devices with rotary tool heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
- B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q2039/008—Machines of the lathe type
Definitions
- the present invention relates to a machine tool equipped with a spindle capable of gripping and rotating a workpiece, and a tool post.
- a machine tool that includes a spindle that can rotate about a spindle centerline and a tool post on which a tool for machining a workpiece gripped by the spindle is mounted (see, for example, Patent Document 1, etc.).
- the tool post of the machine tool described in this Patent Document 1 has a turning unit to which a tool for machining a work is mounted.
- the turning unit turns about a turning axis extending in the Y-axis direction perpendicular to the center line of the spindle. According to the machine tool described in Patent Literature 1, by providing the turning unit, it is possible to adjust the orientation of the tool with respect to the workpiece and perform machining, thereby enabling various kinds of machining.
- the turning unit of the machine tool described in Patent Document 1 includes a plurality of tool holders to which tools are attached.
- the machine tool described in Patent Literature 1 processes a workpiece using a plurality of tools that can be attached to and detached from the plurality of tool holders.
- the present invention has been made in view of the above-mentioned problems, and aims to provide a machine tool that facilitates tool changing work.
- a machine tool of the present invention for solving the above problems is a machine tool comprising a spindle capable of gripping a workpiece and rotatable around the spindle center line, and a tool rest,
- the tool post is equipped with a first tool for machining the workpiece, and is capable of rotating around a first rotating axis extending in a first axial direction perpendicular to the center line of the spindle; a swivel base to which a swivel unit is attached;
- the first turning unit is detachable from the turning base.
- the first turning unit may be a cartridge type unit. Further, the first turning unit may be mountable with a plurality of the first tools. Further, the first turning unit may be attached to the turning base by a screw, and the screw head may be exposed inside the cutting chamber. In addition, the screw may fasten the first pivoting unit and the pivoting base to be operable by a tool when the first pivoting unit is attached to the pivoting base.
- the swivel base may be interchangeable with a plurality of the first swivel units of different types.
- the tool rest has a first swivel mounting portion for swiveling the attached first swivel unit, and the first swivel unit is detachable from the first swivel mount portion.
- the tool post may be movable in the first axial direction. Further, the tool post may be movable in a second axial direction perpendicular to the direction of the spindle center line and perpendicular to the first axial direction.
- the second axial direction may be a direction in which the first tool approaches and separates from the workpiece.
- At least two of a rotating tool unit, a thread whirling unit, a hobbing unit, and a high-speed spindle unit, to which a rotating tool is attached can be interchangeably attached to the rotating base as the first rotating unit.
- the rotary base may be interchangeable between the rotary tool unit to which the rotary tool is mounted and the thread whirling unit.
- the swivel base has a first flow path through which coolant passes
- the first turning unit includes a second flow path connected to the first flow path in a state where the first turning unit is attached to the turning base and supplied with a coolant liquid that has passed through the first flow path, and the second flow path. It may have a coolant nozzle that discharges the coolant liquid that has passed through.
- the coolant nozzle is swirled by the swirl of the first swivel unit, so the coolant can be discharged in a desired direction regardless of the swirl angle of the first swivel unit.
- the desired direction may be the direction toward the cutting edge of the first tool.
- the swivel base has a fitted portion
- the first turning unit has a fitting portion that fits into the fitted portion, and the mounting position with respect to the turning base is determined by fitting the fitting portion into the fitted portion.
- the fitted portion is connected to the first flow path,
- the fitting portion may be connected to the second flow path.
- the first turning unit has an upper end portion attached to the turning base
- the tool post may include a lower end support portion that supports a lower end portion of the first turning unit.
- both ends of the first turning unit are supported by the turning base and the lower end support, the first turning unit is less likely to bend. As a result, it is possible to prevent the machining accuracy of the first tool from deteriorating due to the deflection.
- the tool post has a second turning unit on which a second tool for machining the workpiece is mounted and which can turn around a second turning axis along the first axial direction. and
- the second turning unit may be detachable from the turning base.
- first turning unit and the second turning unit can be attached to the tool rest, more diverse processing becomes possible.
- the second turning axis may be positioned apart from the first turning axis in the second axial direction. Further, the second turning unit may be arranged at a position facing the first turning unit with the work sandwiched therebetween.
- the tool post may have a second swivel mounting portion to which the second swivel unit is attached and which swivels the second swivel unit.
- the first swivel mounting portion may also be mountable with the second swivel unit
- the second swivel mount portion may be mountable with the first swivel unit. That is, the first swivel mounting portion and the second swivel mounting portion may have the same configuration.
- FIG. 3 is a cross-sectional view of the tool rest shown in FIG. 2 taken along the line AA.
- (a) is a plan view of the swivel base shown in FIG. 2
- (b) is a cross-sectional view taken along line BB of (a)
- (c) is shown in (a) of the same figure.
- (a) is a plan view of the quadruple rotary tool unit shown in FIG.
- FIG. 2 is a sectional view taken along line CC of (a), and (c) is a view of (a).
- 1 is a left side view of the quadruple rotary tool unit shown in FIG. (a) is a plan view of the triple rotary tool unit shown in FIG. 2, (b) is a cross-sectional view taken along line DD of (a), and (c) is a view of (a).
- 1 is a left side view of the triple rotary tool unit shown in FIG.
- FIG. 3 is a schematic cross-sectional view showing the internal configurations of the swivel base shown in FIG.
- FIG. 3 is a plan view simply showing the orientation of a tool when the quadruple rotary tool unit and the triple rotary tool unit shown in FIG. 2 are turned;
- FIG. FIG. 3 is a front view of the tool post similar to FIG. 2 showing a first replacement example;
- (a) is a plan view of the thread whirling unit shown in FIG. 9,
- (b) is a cross-sectional view taken along line EE of (a), and
- (c) is shown in FIG.
- FIG. 3D is a left side view of the thread whirling unit shown in FIG. 4A, and FIG. It is a front view of the tool post similar to FIG.
- FIG. 2 which shows the 2nd example of replacement.
- (a) is a left side view of the hobbing unit shown in FIG. 11, and (b) is a cross-sectional view taken along line FF of FIG. 11 (a).
- (a) is a front view of a high-speed spindle unit that can be attached to a swivel base in place of the quadruple rotary tool unit and triple rotary tool unit shown in FIG. 2;
- Fig. 3 is a right side view of the high speed spindle unit shown; It is a front view of the same tool post as FIG. 2 which shows the modification of a tool post.
- FIG. 1 is a plan view simply showing the internal configuration of the NC lathe according to this embodiment.
- the NC lathe 1 includes a control device 2, a headstock 3, a guide bush 4, a tool post 5, and an opposing headstock 6.
- the range of the cutting chamber 11 is indicated by a thin double-dashed line rectangle.
- This NC lathe 1 corresponds to an example of a machine tool.
- the control device 2 stores an NC program and operation information according to various commands used in the NC program.
- the control device 2 is a computer that numerically controls the headstock 3, the tool post 5, and the opposing headstock 6 according to an NC program.
- the control device 2 also controls the rotation of the main shaft 31 and the opposing main shaft 61 .
- the control device 2 also controls the rotation of the tool.
- a spindle 31 is mounted on the headstock 3 .
- the headstock 3 is movable in the Z1-axis direction together with the spindle 31 .
- the Z1-axis direction is the horizontal direction, which is the left-right direction in FIG.
- the main shaft 31 has a gripping portion such as a collet chuck.
- the main shaft 31 releasably grips the long rod-shaped work W inserted therein by the gripping portion.
- the main shaft 31 can grip the workpiece W and rotate about the main shaft center line CL1.
- the direction of the spindle centerline CL1 coincides with the Z1-axis direction.
- the main shaft 31 is provided with a spindle motor (not shown) such as a built-in motor. By driving the spindle motor, the main shaft 31 rotates about the main shaft center line CL1. As a result, the workpiece W gripped by the spindle 31 rotates about the spindle centerline CL1.
- the guide bush 4 is fixed to the leg, which is the base of the NC lathe 1, via a guide bush support 41.
- the end face of the guide bush 4 opposite to the side where the main shaft 31 is arranged is exposed inside the cutting chamber 11 .
- the guide bush 4 supports the tip side portion of the workpiece W gripped by the main shaft 31 so as to be slidable in the Z1-axis direction.
- a portion of the guide bush 4 that supports the workpiece W is rotatable about the main shaft center line CL1 in synchronism with the main shaft 31. As shown in FIG. That is, the spindle center line CL1 is also the rotation center line of the portion of the work W supported by the guide bush 4 . Since the guide bush 4 suppresses the deflection of the work W during machining, it is possible to machine a particularly elongated work W with high precision.
- the tool rest 5 can move in the X1-axis direction perpendicular to the spindle center line CL1 and in the horizontal direction, and in the Y1-axis direction perpendicular to the spindle center line CL1 and perpendicular to the X1-axis direction.
- the vertical direction is the X1-axis direction
- the direction orthogonal to the paper surface is the Y1-axis direction.
- the Y1 axis direction corresponds to an example of the first axis direction.
- the X1 axis direction corresponds to an example of the second axis direction.
- the tool post 5 includes a moving table 51 , a swivel base 52 , a quadruple rotary tool unit 53 , and a triple rotary tool unit 54 .
- the quadruple rotary tool unit 53 corresponds to an example of the first turning unit, and also corresponds to an example of the rotary tool unit.
- the triple rotary tool unit 54 corresponds to an example of the second turning unit, and also corresponds to an example of the rotary tool unit.
- the tool post 5 also includes a first lower end support member 56, a first comb-shaped blade holder 57, and a second comb-shaped blade holder 58 shown in FIG.
- the swivel base 52 , the quadruple rotary tool unit 53 , the triple rotary tool unit 54 , the first lower end support member 56 , the first comb-shaped blade holder 57 and the second comb-shaped blade holder 58 are arranged in the cutting chamber 11 .
- the configuration of the tool post 5 will be detailed later.
- the opposed headstock 6 is arranged inside the cutting chamber 11 .
- An opposed spindle 61 is mounted on the opposed headstock 6 .
- the opposed headstock 6 is movable along with the opposed spindle 61 in the X2-axis direction and the Z2-axis direction.
- the X2-axis direction is the same direction as the X1-axis direction described above
- the Z2-axis direction is the same direction as the Z1-axis direction described above.
- FIG. 1 shows the facing main shaft 61 at a position facing the main shaft 31 with the guide bush 4 interposed therebetween. At this position, the opposing main shaft center line CL2, which is the center of rotation of the second main shaft, is arranged on the same line as the main shaft center line CL1.
- the direction of the opposing main shaft center line CL2 coincides with the Z2-axis direction.
- a cut work W ⁇ b>1 that has been cut after the machining using the main shaft 31 is completed is delivered to the opposing main shaft 61 .
- the opposing main shaft 61 has a gripping portion such as a collet chuck.
- the opposed headstock 6 is provided with a spindle motor such as a built-in motor. By driving the spindle motor, the opposing main shaft 61 rotates around the opposing main shaft center line CL2. As a result, the cut workpiece W1 gripped by the opposing main shaft 61 rotates around the opposing main shaft center line CL2.
- FIG. 2 is a view of the tool post of the NC lathe shown in Fig. 1, viewed from the opposite headstock side. 2 shows a state in which the triple rotary tool unit 54 is turned 180 degrees with respect to FIG. FIG. 2 also shows the guide bush 4, the guide bush support 41, the workpiece W, and the spindle centerline CL1. The workpiece W and the spindle centerline CL1 extend in a direction orthogonal to the plane of FIG. In addition, in FIG. 2, a cross section is partially shown, and the portion is hatched.
- FIG. 3 is a cross-sectional view of the tool rest shown in FIG. 2 along the line AA. In FIG.
- FIG. 3 a cross-sectional portion excluding a lower end support bearing 563 and a screw 564, which will be described later, is hatched.
- a front view of the facing headstock 6 (see FIG. 1) will be described below.
- the tool post 5 includes the moving table 51, the swivel base 52, the quadruple rotary tool unit 53, the triple rotary tool unit 54, the first lower end support member 56, and the first comb-shaped blade holder. 57 and a second comb blade holder 58 .
- the moving table 51 is movable in the X1-axis direction and the Y1-axis direction. As shown in FIG. 2, the moving table 51 has a rectangular shape with an opening 51a formed in the center.
- the moving table 51 moves in the X1-axis direction and the Y1-axis direction within the range where the guide bush 4 is positioned within the opening 51a.
- the moving table 51 is moved in the X1-axis direction and the Y1-axis direction by an X1-axis motor and a Y1-axis motor (not shown) controlled by the control device 2 (see FIG. 1).
- the swivel base 52 includes a base body 521 , a tool rotating motor 522 and a swiveling motor 523 .
- the swivel base 52 also includes a rotational drive transmission mechanism 7 and a swivel drive transmission mechanism 8 shown in FIG. 4(b).
- the base body 521 is fixed to the moving table 51 with four screws 5211 .
- the tool rotation motor 522 and the turning motor 523 are fixed to the base body 521 .
- the tool rotating motor 522 and turning motor 523 are servo motors controlled by the control device 2 (see FIG. 1).
- a reduction gear 5231 is provided in the turning motor 523 .
- the quadruple rotary tool unit 53 has a first swivel holder 530 and four first rotary tool modules 93 . Each of the four first rotary tool modules 93 is fixed to the first swivel holder 530 .
- the first swivel holder 530 extends in the vertical direction and has a substantially U-shape.
- a first bearing case 5300 is formed at the upper end portion of the first turning holder 530 . This first bearing case 5300 is inserted into the base body 521 .
- the first swivel holder 530 is detachably attached to the base body 521 at its upper end portion.
- a support shaft 534 is attached to the lower end portion of the first swivel holder 530 .
- This support shaft 534 can be removed from the first swivel holder 530 by loosening the screw 535 .
- the quadruple rotary tool unit 53 turns a maximum of 180 degrees around the first turning axis B1.
- the first turning axis B1 is orthogonal to the main shaft centerline CL1 (see FIG. 1) and extends along the Y1 axis direction.
- Four first rotary tool modules 93 are fixed to the first swivel holder 530 .
- the number of first rotary tool modules 93 fixed to the first swivel holder 530 may be one to three, or may be five or more.
- the four first rotary tool modules 93 are fixed in a row in the Y1-axis direction.
- FIG. 2 shows four first rotary tool modules 93 each having a one-side rotary tool 93a protruding to one side and another side rotary tool 93b protruding to the other side.
- the one-side rotary tool 93a corresponds to an example of a first tool.
- FIG. 2 shows the quadruple rotary tool unit 53 at a non-swiveling reference swivel angle. At this reference turning angle, the one-side rotary tool 93a and the other-side rotary tool 93b protrude in the X1-axis direction.
- the first swivel holder 530 has a first coolant inflow pin 531 , a second flow path 532 and eight first coolant nozzles 533 . These first coolant inflow pin 531, second flow path 532 and eight first coolant nozzles 533 direct the coolant supplied from the swivel base 52 toward the tips of the one side rotary tool 93a and the other side rotary tool 93b. It is a configuration for ejecting.
- the first coolant inflow pin 531 is fixed to the upper end portion of the first swivel holder 530, and the upper portion protrudes upward. This first coolant inflow pin 531 corresponds to an example of a fitting portion.
- the first coolant inflow pin 531 has a cylindrical shape with a hollow inside through which the coolant liquid passes.
- An O-ring is attached to each of the upper end portion and the lower end portion of the first coolant inflow pin 531 .
- the quadruple rotary tool unit 53 is attached to the swivel base 52 as shown in FIG. 2, the upper portion of the first coolant inflow pin 531 is located at the first fitting formed in the first swivel cylinder 81 shown in FIG. It fits in the hole 81b.
- the second flow path 532 is connected to the lower end of the first coolant inflow pin 531 and extends to eight first coolant nozzles 533 .
- the second flow path 532 branches into eight on the way and is connected to each of the eight first coolant nozzles 533 .
- the eight first coolant nozzles 533 protrude toward protruding ends of the one-side rotary tool 93a and the other-side rotary tool 93b attached to the quadruple rotary tool unit 53, respectively.
- a discharge port is formed at the tip of each first coolant nozzle 533 .
- the coolant liquid that has passed through the first coolant inflow pin 531 and the second flow path 532 is discharged from the discharge ports of the first coolant nozzles 533 in the projecting direction of the one-side rotary tool 93a and the other-side rotary tool 93b. .
- the first lower end support member 56 is formed with a supporting through-hole 561 penetrating in the Y1-axis direction and two screw through-holes 562 penetrating in the Z1-axis direction as shown in FIG.
- the first lower end support member 56 corresponds to an example of a lower end support portion.
- a lower end support bearing 563 is fitted in the support through hole 561 .
- the support shaft 534 is inserted into the lower end support bearing 563 so that the lower end portion of the quadruple rotary tool unit 53 is rotatably supported by the first lower end support member 56 . .
- the lower end portion of the quadruple rotary tool unit 53 is restricted from moving sideways.
- the quadruple rotary tool unit 53 is less likely to bend, resulting in an increase in machining accuracy.
- the first lower end support member 56 may be omitted if the quadruple rotary tool unit 53 is difficult to bend.
- the moving table 51 has two screw holes 511 formed therein.
- the first lower end support member 56 is detachably fixed to the moving table 51 by two screws 564 passing through the screw through holes 562 and screwed into the screw holes 511 .
- the first lower end support member 56 can be removed from the moving table 51 by removing two screws 564 .
- the moving table 51 is formed with three positioning pins 512 used for accurately attaching the first lower end support member 56 to a predetermined position of the moving table 51 . These positioning pins 512 protrude toward the front side of the paper surface of FIG.
- the triple rotary tool unit 54 has a second swivel holder 540 and three second rotary tool modules 94 . Each of the three second rotary tool modules 94 is secured to a second pivot holder 540 .
- the second swivel holder 540 extends vertically.
- a second bearing case 5400 is formed at the upper end portion of the second swivel holder 540 . This second bearing case 5400 is inserted into the base body 521 .
- the second swivel holder 540 is detachably attached to the base body 521 at its upper end portion.
- the second turning axis B2 is parallel to the first turning axis B1 at a position separated from the first turning axis B1 in the X1-axis direction. That is, the second turning axis B2 is along the Y1 axis direction.
- Three second rotary tool modules 94 are fixed to the second swivel holder 540 .
- the number of second rotary tool modules 94 fixed to the second swivel holder 540 may be one, two, or four or more.
- the three second rotary tool modules 94 are fixed in a row in the Y1-axis direction.
- FIG. 2 shows three second rotary tool modules 94 with rotary tools 94a protruding to one side.
- This rotary tool 94a corresponds to an example of a second tool.
- FIG. 2 shows the triple rotary tool unit 54 at a non-swiveled reference swivel angle. At this reference turning angle, the second rotary tool module 94 protrudes in the X1-axis direction.
- the second swivel holder 540 has a second coolant inflow pin 541 , a fourth flow path 542 and three second coolant nozzles 543 . These second coolant inflow pin 541, fourth flow path 542 and three second coolant nozzles 543 are configured to discharge the coolant liquid supplied from the turning base 52 toward the tip of the rotary tool 94a.
- the second coolant inflow pin 541 is fixed to the upper end portion of the second swivel holder 540, and the upper portion protrudes upward.
- the second coolant inflow pin 541 has the same shape as the first coolant inflow pin 531, and has a tubular shape with a hollow inside through which the coolant liquid passes.
- the upper portion of the second coolant inflow pin 541 is located at the second fitting formed in the second swivel cylinder 82 shown in FIG. It fits in the hole 82b.
- the fourth flow path 542 is connected to the lower end of the second coolant inflow pin 541 and extends to three second coolant nozzles 543 .
- This fourth flow path 542 branches into three on the way and is connected to each of the three second coolant nozzles 543 .
- the three second coolant nozzles 543 protrude toward the protruding ends of the rotary tools 94a attached to the triple rotary tool unit 54, respectively.
- a discharge port is formed at the tip of each second coolant nozzle 543 .
- the coolant liquid that has passed through the second coolant inflow pin 541 and the fourth flow path 542 is discharged from the discharge ports of the second coolant nozzles 543 in the projecting direction of the rotary tool 94a.
- a large amount of the coolant liquid enters the holes and grooves being machined in the workpiece W (see FIG. 1) being machined by the rotary tool 94a.
- machining resistance can be reduced, and chips can be easily discharged from the holes and grooves, increasing machining accuracy.
- the first comb-shaped blade holder 57 is a tool holder to which a plurality of first tools BT1 are detachably attached.
- the first comb-shaped blade holder 57 is arranged immediately below the first lower end support member 56 and fixed to the moving table 51 .
- the first comb-shaped blade holder 57 is formed with four first bit mounting portions for detachably mounting the first bit BT1. Note that the number of the first bite mounting portions may be 1 to 3, or may be 5 or more.
- the four first bite mounting portions are arranged in a row in the Y1-axis direction.
- FIG. 2 shows a state in which four first cutting tools BT1 are attached to the first comb-shaped blade holder 57. As shown in FIG.
- the second comb-shaped blade holder 58 is a tool holder to which a plurality of second tools BT2 are detachably attached.
- the second comb-shaped blade holder 58 is arranged to face the first comb-shaped blade holder 57 with the guide bush 4 interposed therebetween, and is fixed to the moving table 51 .
- the second comb-shaped blade holder 58 is formed with four second bite mounting portions for detachably mounting the second bite BT2.
- the number of the second bite mounting portions may be one to three, or may be five or more.
- the four second bite mounting portions are formed in a row in the Y1-axis direction.
- FIG. 2 shows a state in which four second cutting tools BT2 are attached to the second comb-shaped blade holder 58. As shown in FIG.
- FIG. 4(a) is a plan view of the turning base shown in FIG. 2
- FIG. 4(b) is a cross-sectional view along line BB of FIG. 4(a)
- FIG. It is a bottom view of the turning base shown in (a).
- the tool rotating motor 522, turning motor 523 and speed reducer 5231 are drawn without cutting.
- a rotation drive transmission mechanism 7 for transmitting the driving force of the tool rotation motor 522 and a driving force from the turning motor 523 to transmit the driving force of the rotary drive motor 523.
- a turning drive transmission mechanism 8 for turning the rotary tool unit 53 and the triple rotary tool unit 54 is arranged.
- a first flow path 5212 and a third flow path 5213 are formed in the housing of the base body 521 .
- the rotation drive transmission mechanism 7 has a coupling 71 , a drive gear 72 , a first driven gear 73 and a second driven gear 74 .
- the coupling 71 connects the output shaft of the tool rotating motor 522 and the shaft to which the driving gear 72 is fixed.
- the first driven gear 73 and the second driven gear 74 have the same configuration. Also, the first driven gear 73 and the second driven gear 74 mesh with the driving gear 72 respectively. A portion of the first driven gear 73 enters the first turning cylinder 81 through a notch 81a formed in the first turning cylinder 81, which will be described later. Similarly, part of the second driven gear 74 enters the second turning cylinder 82 through a notch 82a formed in the second turning cylinder 82, which will be described later.
- the coupling 71, the drive gear 72, the first driven gear 73 and the second driven gear 74 rotate.
- the turning drive transmission mechanism 8 has a first turning cylinder 81 , a second turning cylinder 82 , a first pulley 83 , a second pulley 84 and a transmission belt 85 .
- the first turning cylinder 81, the second turning cylinder 82, the first pulley 83, and the second pulley 84 are rotated by driving the turning motor 523. In FIG. It is hatched.
- the first turning cylinder 81 has a solid shaft shape on the upper side and a hollow cylindrical shape on the lower side. This first swivel cylinder 81 corresponds to an example of a first swivel mounting portion.
- Both the axial center of the shaft-shaped portion and the cylinder center of the cylindrical portion of the first turning cylinder 81 are coaxial with the first turning axis B1.
- the cylindrical portion of the first turning cylinder 81 has an inner diameter slightly larger than the outer diameter of the first bearing case 5300 (see FIG. 2).
- a notch 81 a into which the first driven gear 73 is inserted is formed in the cylindrical portion of the first turning cylinder 81 .
- the notch 81a is formed in an angle range in which the first driven gear 73 does not come into contact with the first turning cylinder 81 when it rotates.
- the upper end of the first turning cylinder 81 is connected to the output shaft of the speed reducer 5231 .
- a first pulley 83 is fixed to the upper portion of the first turning cylinder 81 .
- the first swivel cylinder 81 is rotatably held by the housing of the base body 521 via bearings.
- the lower end of the first turning cylinder 81 is slightly thickened like a flange.
- a first fitting hole 81b having an opening downward is formed in the flange-like portion.
- the first fitting hole 81b corresponds to an example of a fitted portion.
- the first fitting hole 81b has an inner diameter slightly larger than the outer diameter of the first coolant inflow pin 531 (see FIG. 2). That is, the first fitting hole 81b has an inner diameter larger than the outer diameter of the first coolant inflow pin 531 by the fitting tolerance.
- the first fitting hole 81b is provided with a first coolant receiving hole 81c that continues to the opening of the side surface of the flange-like portion.
- a first ring-shaped groove 5212a is formed at the downstream end of the first flow path 5212 so as to surround the flange-shaped portion of the first turning cylinder 81 .
- the first annular groove 5212a is connected to the first coolant receiving hole 81c.
- the coolant flowing through the first flow path 5212 flows into the first coolant receiving hole 81c from the first annular groove 5212a and enters the first fitting hole 81b regardless of the rotation angle of the first swivel cylinder 81.
- flow into Two O-rings OR1 are arranged between the housing of the base body 521 and the flange-like portion of the first turning cylinder 81 so as to sandwich the first annular groove 5212a.
- the O-ring OR1 prevents the coolant liquid flowing from the first annular groove 5212a of the base body 521 into the first coolant receiving hole 81c of the first turning cylinder 81 from leaking out from between the base body 521 and the first turning cylinder 81. It has become. Further, as shown in FIG. 4(c), the flange-like portion of the first turning cylinder 81 is formed with four screw holes 81d.
- the second swivel barrel 82 has the same shape as the first swivel barrel 81 except for the position of the notch 82a.
- This second swivel cylinder 82 corresponds to an example of a second swivel mounting portion.
- the notch 82a is formed in an angular range that does not contact the second driven gear 74 even when the second turning cylinder 82 rotates.
- Both the axial center of the shaft-shaped portion and the cylinder center of the cylindrical portion of the second turning cylinder 82 are coaxial with the second turning axis B2.
- the cylindrical portion of the second turning cylinder 82 has an inner diameter slightly larger than the outer diameters of the first bearing case 5300 (see FIG. 2) and the second bearing case 5400 (see FIG. 2).
- a second pulley 84 is fixed to the upper portion of the second turning cylinder 82 .
- the second swivel cylinder 82 is rotatably held by the housing of the base body 521 via bearings.
- a second fitting hole 82b having an opening downward is formed in the flange-like portion of the second turning cylinder 82.
- the second fitting hole 82b has an inner diameter slightly larger than the outer diameters of the first coolant inflow pin 531 (see FIG. 2) and the second coolant inflow pin 541 (see FIG. 2). That is, the second fitting hole 82b has an inner diameter larger than the outer diameter of the first coolant inflow pin 531 and the outer diameter of the second coolant inflow pin 541 by the fitting tolerance.
- the second fitting hole 82b is provided with a second coolant receiving hole 82c that continues to the opening of the side surface of the flange-like portion.
- a second annular groove 5213a is formed at the downstream end of the third flow path 5213 formed inside the base body 521 so as to surround the flange-like portion at the lower end of the second swivel cylinder 82 .
- the second annular groove 5213a is connected to the second coolant receiving hole 82c.
- the coolant liquid flowing through the third flow path 5213 flows into the second coolant receiving hole 82c from the second annular groove 5213a and enters the second fitting hole 82b regardless of the rotation angle of the second swivel cylinder 82.
- flow into Two O-rings OR2 are arranged between the flange-like portion of the base body 521 and the second swivel cylinder 82 so as to sandwich the second annular groove 5213a.
- the O-ring OR2 prevents coolant from leaking out from between the base body 521 and the second swivel cylinder 82.
- the flange-like portion of the second swivel cylinder 82 is formed with four screw holes 82d.
- the first pulley 83 and the second pulley 84 have the same diameter and the same shape.
- the transmission belt 85 is stretched between the first pulley 83 and the second pulley 84 . Rotation of the first turning cylinder 81 is transmitted to the second turning cylinder 82 by the transmission belt 85 . Therefore, when the turning motor 523 is driven, the first turning barrel 81 and the second turning barrel 82 are synchronously turned at the same angle.
- the first turning cylinder 81 and the second turning cylinder 82 may be connected by gears, and the first turning cylinder 81 and the second turning cylinder 82 may be synchronously rotated.
- an electric clutch may be provided between the second turning cylinder 82 and the second pulley 84 to selectively transmit the drive of the turning motor 523 to the second turning cylinder 82 .
- an encoder may be attached to the second turning barrel 82 so that the rotation angle of the second turning barrel 82 can be obtained.
- the electric clutch is disconnected when the rotary tool unit 54 (see FIG. 2) is rotated to a desired rotation angle, and the brake mechanism The triple rotary tool unit 54 may be held at that rotation angle.
- FIG. 5(a) is a plan view of the quadruple rotary tool unit shown in FIG. 2
- FIG. 5(b) is a sectional view taken along line CC of FIG. 5(a)
- FIG. 3 is a left side view of the quadruple rotary tool unit shown in FIG.
- the block-shaped member in which part of the second flow path 532 is formed and the first coolant nozzle 533 are omitted from the illustration.
- a flange 5301 is formed at the base of the first bearing case 5300 of the quadruple rotary tool unit 53.
- the flange 5301 is formed with four through holes 5301a.
- screws 536 for attaching the quadruple rotary tool unit 53 to the swivel base 52 pass through the through holes 5301a.
- Four screws 536 passing through the four through-holes 5301a are respectively screwed into four screw holes 81d formed in the flange-like portion of the first turning cylinder 81 shown in FIG.
- a continuous rotary tool unit 53 is detachably attached to the swivel base 52 .
- a rotary drive transmission mechanism 7 (see FIG. 4B) is connected to the inner side of the first turning holder 530 to transmit the driving force transmitted from the rotary drive transmission mechanism 7 to the first rotary tool module 93 .
- a one-tool rotation mechanism 91 is provided.
- the first tool rotating mechanism 91 has a first connection shaft 911 and a first transmission shaft 912 .
- the first connection shaft 911 extends in the Y1-axis direction inside the first bearing case 5300 .
- the first connecting shaft 911 is rotatably supported by two bearings arranged inside the first bearing case 5300 .
- a first connection gear 9111 is fixed to the upper end of the first connection shaft 911 .
- the first connection gear 9111 meshes with the first driven gear 73 shown in FIG. 4(b) when the quadruple rotary tool unit 53 is attached to the turning base 52 (see FIG. 2).
- a bevel gear 9112 is fixed to the lower end of the first connection shaft 911 .
- FIG. 5(b) shows the quadruple rotary tool unit 53 at the reference turning angle.
- the first transmission shaft 912 extends in the X1-axis direction.
- the first transmission shaft 912 is rotatably supported by two bearings arranged in the housing of the first swivel holder 530 .
- a bevel gear 9121 is fixed to one end of the first transmission shaft 912 .
- This bevel gear 9121 meshes with the bevel gear 9112 of the first connection shaft 911 .
- a spur gear 9122 is fixed to the other end of the first transmission shaft 912 .
- the first rotating tool module 93 has a first rotating shaft 930 .
- the one-side rotary tool 93a and the other-side rotary tool 93b are held by collet chucks provided at both end portions of the first rotary shaft 930, respectively. By loosening this collet chuck, the one-side rotary tool 93 a and the other-side rotary tool 93 b can be extracted from the first rotary shaft 930 .
- the first rotary shaft 930 is rotatably supported by the first swivel holder 530 by four bearings.
- a spur gear 930 a is fixed to the other end of the first rotating shaft 930 .
- the spur gears 930a of the adjacent first rotary tool modules 93 mesh with each other.
- the spur gear 930 a of the first rotary tool module 93 attached at the top is in mesh with the spur gear 9122 of the first transmission shaft 912 .
- the rotational drive transmission mechanism 7 (see FIG. 4B), the first tool rotating mechanism 91, and the spur gear 9122 of the first rotating tool module 93 described above generate the driving force of the tool rotating motor 522 (see FIG. 2). It is transmitted to each first rotating shaft 930 to rotate the one side rotating tool 93a and the other side rotating tool 93b.
- FIG. 6(a) is a plan view of the triple rotary tool unit shown in FIG. 2
- FIG. 6(b) is a cross-sectional view taken along line DD of FIG. 6(a)
- FIG. 3 is a left side view of the triple rotary tool unit shown in FIG.
- the block-shaped member in which part of the fourth flow path 542 is formed and the second coolant nozzle 543 are omitted from the illustration.
- the second bearing case 5400, the flange 5401, the second connection shaft 921 and the second transmission shaft 922 are connected to the first bearing case shown in FIG. 5(b).
- 5300 , flange 5301 , first connection shaft 911 and first transmission shaft 912 have the same shape.
- a through hole 5401a formed in the flange 5401 is penetrated by a screw 546 for attaching the triple rotary tool unit 54 to the swivel base 52 (see FIG. 2).
- Four screws 546 passing through the four through-holes 5401a are respectively screwed into four screw holes 82d formed in the flange-like portion of the second turning cylinder 82 shown in FIG.
- a continuous rotary tool unit 54 is detachably attached to the swivel base 52 .
- a second tool rotating mechanism 92 is provided that communicates with a second rotating tool module 94 .
- the second tool rotation mechanism 92 has the second connection shaft 921 and the second transmission shaft 922 described above.
- a second connection gear 9211 is fixed to the upper end of the second connection shaft 921 .
- This second connection gear 9211 meshes with the second driven gear 74 shown in FIG.
- a bevel gear 9212 is fixed to the lower end of the second connection shaft 921 .
- FIG. 6(b) shows the triple rotary tool unit 54 at the reference turning angle.
- the second transmission shaft 922 extends in the X1-axis direction.
- a bevel gear 9221 is fixed to one end of the second transmission shaft 922 .
- This bevel gear 9221 meshes with the bevel gear 9212 of the second connection shaft 921 .
- a spur gear 9222 is fixed to the other end of the second transmission shaft 922 .
- the second rotary tool module 94 has a second rotary shaft 940 .
- the rotating tool 94a is gripped by a collet chuck provided at one end of the second rotating shaft 940. As shown in FIG. By loosening this collet chuck, the rotating tool 94a can be extracted from the second rotating shaft 940.
- the second rotary shaft 940 is rotatably supported by the second swivel holder 540 by four bearings.
- a spur gear 940 a is fixed to the other end of the second rotating shaft 940 .
- the spur gears 940a of the adjacent second rotary tool modules 94 mesh with each other.
- the spur gear 940 a of the second rotary tool module 94 attached to the uppermost part meshes with the spur gear 9222 of the second transmission shaft 922 .
- the rotational drive transmission mechanism 7 (see FIG. 4B), the second tool rotating mechanism 92, and the spur gear 9222 of the second rotating tool module 94 described above generate the driving force of the tool rotating motor 522 (see FIG. 2).
- the rotary tool 94a is rotated by being transmitted to each of the second rotary shafts 940. As shown in FIG.
- FIG. 7 is a schematic cross-sectional view showing the internal configuration of the revolving base shown in FIG. 2 and the quadruple rotary tool unit and triple rotary tool unit attached to the revolving base.
- the first bearing case 5300 is fitted to the cylindrical portion of the first swivel cylinder 81.
- the first coolant inflow pin 531 is fitted in the first fitting hole 81b.
- the first flow path 5212 is connected to the second flow path 532 via the first fitting hole 81 b and the first coolant inflow pin 531 . Therefore, the coolant liquid that has passed through the first flow path 5212 is supplied to the second flow path 532 .
- the first coolant inflow pin 531 and the first fitting hole 81b have a so-called positioning structure, and since there is almost no gap between them, leakage of the coolant liquid from the gap is suppressed. . Therefore, when the pressure of the coolant liquid is low, the O-ring attached to the portion of the first coolant inflow pin 531 that fits into the first fitting hole 81b can be omitted.
- the second bearing case 5400 is fitted to the cylindrical portion of the second swivel cylinder 82 .
- the second coolant inflow pin 541 is fitted in the second fitting hole 82b.
- the quadruple rotary tool unit 53 and triple rotary tool unit 54 also rotate synchronously at the same angle. do.
- the third flow path 5213 is connected to the fourth flow path 542 via the second fitting hole 82 b and the second coolant inflow pin 541 . Therefore, the coolant liquid that has passed through the third flow path 5213 is supplied to the fourth flow path 542 .
- the second coolant inflow pin 541 and the second fitting hole 82b have a so-called positioning structure, and there is almost no gap between them. Therefore, when the pressure of the coolant liquid is low, the O-ring attached to the portion of the second coolant inflow pin 541 that fits into the second fitting hole 82b can be omitted.
- FIG. 8 is a plan view simply showing the orientation of the tools when the quadruple rotary tool unit and triple rotary tool unit shown in FIG. 2 are turned.
- the quadruple rotary tool unit 53 and the triple rotary tool unit 54 at the reference turning angle are indicated by solid lines, and the states of turning from the reference turning angle are indicated by two-dot chain lines.
- the quadruple rotary tool unit 53 and the triple rotary tool unit 54 are drawn smaller so that the one-side rotary tool 93a and the rotary tool 94a are illustrated.
- FIG. 8 also shows how the quadruple rotary tool unit 53 and the triple rotary tool unit 54 are rotated at positions separated from the spindle center line CL1 in the X1-axis direction.
- the quadruple rotary tool unit 53 turns around the first turning axis B1, and at the same time, the triple rotary tool unit 54 rotates in the second turning direction. It turns around the axis B2.
- the first turning axis B1 and the second turning axis B2 extend in a direction orthogonal to the plane of FIG. 8 .
- four states in which the quadruple rotary tool unit 53 and the triple rotary tool unit 54 are turned by 45 degrees are shown by chain double-dashed lines.
- the positions of the specified tool and the workpiece W in the Y1-axis direction are aligned by moving the tool post 5 (see FIG.
- the turning angle of the quadruple rotary tool unit 53 When the turning angle of the quadruple rotary tool unit 53 is other than 0 degree, 90 degrees, and 180 degrees and is inclined with respect to the work W, the movement of the tool post 5 in the X1-axis direction and the movement of the headstock 3 in the Z1-axis direction By synchronizing the movements, it is possible to perform oblique hole machining on the workpiece W with the one-side rotary tool 93a.
- the turning angle of the quadruple rotary tool unit 53 is 90 degrees, after the tool post 5 is moved in the X1-axis direction so that the one-side rotary tool 93a faces the work W, the headstock 3 is moved in the Z1-axis direction. By moving the rotary tool 93a, the leading end portion of the workpiece W can be drilled.
- the other side rotary tool 93b is normally used for processing the cut workpiece W1 gripped by the opposed spindle 61.
- a desired one is selected from the four other-side rotating tools 93b by moving the tool post 5 (see FIG. 1) in the Y1-axis direction. Further, by moving the opposing headstock 6 in the X2-axis direction, the cut workpiece W1 is placed at a position facing the selected other side rotary tool 93b.
- the turning angle of the quadruple rotary tool unit 53 is 90 degrees
- the cut end portion of the cut workpiece W1 is drilled with the other side rotary tool 93b. can be done.
- the turning angle of the quadruple rotary tool unit 53 is other than 0 degree, 90 degrees, and 180 degrees with respect to the cut work W1, the direction of the X1 axis of the tool post 5 or the X2 axis of the opposed headstock 6
- the direction of the X1 axis of the tool post 5 or the X2 axis of the opposed headstock 6 By synchronizing the movement in the Z2-axis direction with the movement in the Z2-axis direction of the opposed headstock 6, it is possible to machine an oblique hole in the cut workpiece W1.
- FIG. 1 When removing the quadruple rotary tool unit 53 from the swivel base 52 , the screw 535 is loosened and the support shaft 534 is pulled out from the lower end support bearing 563 . Then, the two screws 564 are removed to remove the first lower end support member 56 from the moving table 51 . Next, the four screws 536 are removed, the quadruple rotary tool unit 53 is lowered, and the first bearing case 5300 is pulled out from the first swivel cylinder 81 .
- the quadruple rotary tool unit 53 can be removed from the swivel base 52 . Further, the quadruple rotary tool unit 53 can be attached to the swivel base 52 by reversing the above procedure.
- the quadruple rotary tool unit 53 is lifted and the first bearing case 5300 is inserted into the first swivel cylinder 81, the quadruple rotary tool unit 53 is lifted so that the first coolant inflow pin 531 and the first fitting hole 81b are aligned. The angle of the turning direction of the rotary tool unit 53 is adjusted.
- the screws 564 are tightened while the first lower end support member 56 is in contact with the three positioning pins 512 . By doing so, the first lower end support member 56 is fixed to the moving table 51 at a predetermined position.
- the triple rotary tool unit 54 When removing the triple rotary tool unit 54 from the swivel base 52 , the four screws 546 are removed, the triple rotary tool unit 54 is lowered, and the second bearing case 5400 is pulled out from the second swivel cylinder 82 . During the pulling process, the second coolant inflow pin 541 is pulled out from the second fitting hole 82b. Thus, the triple rotary tool unit 54 can be removed from the swivel base 52 . Also, the triple rotary tool unit 54 can be attached to the swivel base 52 by reversing the above procedure.
- the triple rotary tool unit 54 When the triple rotary tool unit 54 is lifted and the second bearing case 5400 is inserted into the second swivel cylinder 82, the triple rotary tool unit 54 is lifted so that the second coolant inflow pin 541 and the second fitting hole 82b are aligned. The angle of the turning direction of the rotary tool unit 54 is adjusted.
- the mounting structure of the quadruple rotary tool unit 53 to the swivel base 52 and the mounting structure of the triple rotary tool unit 54 to the swivel base 52 are the same.
- the structure of the swivel cylinder 82 is also the same except for the positions of the cutouts 81a and 82a.
- the quadruple rotary tool unit 53 and the triple rotary tool unit 54 can be attached to the swivel base 52 by exchanging their positions.
- the quadruple rotary tool unit 53 corresponds to an example of the second turning unit
- the triple rotary tool unit 54 corresponds to an example of the first turning unit.
- the tool post 5 of the present embodiment can also attach a tool unit of a different type from the quadruple rotary tool unit 53 and triple rotary tool unit 54 to the swivel base 52 .
- the quadruple rotary tool unit 53 or the triple rotary tool unit 54 can be of different types such as the thread whirling unit 13 (see FIG. 10), the hobbing unit 15 (see FIG. 12) or the high speed spindle unit 18 (see FIG. 13). can be replaced with the tool unit of
- These different types of tool units can be attached to the swivel base 52 by a procedure similar to the attachment/detachment procedure described above.
- FIG. 9 is a front view of the same tool post as in FIG. 2 showing a first replacement example.
- FIG. 9 shows the quadruple rotary tool unit 53 turned 90 degrees.
- the components that have already been described may be denoted by the reference numerals used so far, and overlapping descriptions may be omitted.
- FIG. 9 shows how the thread whirling unit 13 has turned 90 degrees.
- This thread whirling unit 13 corresponds to an example of a second turning unit.
- the mounting structure of the quadruple rotary tool unit 53 to the turning base 52 and the mounting structure of the thread whirling unit 13 to the turning base 52 are the same. Therefore, the quadruple rotary tool unit 53 and the thread whirling unit 13 can be attached to the swivel base 52 by exchanging their positions.
- the thread whirling unit 13 corresponds to an example of the first turning unit when it is attached by replacing it.
- the thread whirling unit 13 has a whirling turning holder 130 .
- a third bearing case 1300 is formed at the upper end portion of the whirling swivel holder 130 . This third bearing case 1300 is inserted into the base body 521 .
- the waring swivel holder 130 is detachably attached to the base body 521 at its upper end portion.
- the whirling turning holder 130 is formed with a whirling tool mounting portion for detachably mounting the whirling tool 13a.
- FIG. 9 shows a whirling tool 13a with six insert tips 13b attached to the whirling swivel holder 130.
- FIG. This whirling tool 13a corresponds to an example of a second tool.
- the whirling tool 13a corresponds to an example of the first tool.
- the whirling tool 13a of the thread whirling unit 13 is arranged substantially on the second turning axis B2, so that the thread whirling unit 13 is less likely to vibrate or bend, and machining can be performed with high machining accuracy.
- FIG. 10(a) is a plan view of the thread whirling unit shown in FIG. 9, FIG. 10(b) is a cross-sectional view along line EE of FIG. 10(a), and FIG. FIG. 10D is a left side view of the thread whirling unit shown in FIG. 10A, and FIG. 10D is a right side view of the thread whirling unit shown in FIG. FIG. 10(a) shows the thread whirling unit 13 at the reference turning angle.
- the third bearing case 1300, the flange 1301 and the third connecting shaft 141 are the first bearing case 5300, the flange 5301 and the third connecting shaft shown in FIG. 5(b). 1 It has the same shape as the connecting shaft 911 . Further, the third transmission shaft 142 has the same shape as the first transmission shaft 912 except that the shaft length is short. As shown in FIG. 10(b), four screws 536 passing through four through holes 1301a formed in the flange 5301 are formed in the flange-like portion of the second swivel cylinder 82 shown in FIG. 4(c). The thread whirling unit 13 is detachably attached to the turning base 52 by being screwed into each of the four screw holes 82d.
- the waring swivel holder 130 has a third coolant inflow pin 131, a fifth flow path 132, and a third coolant nozzle 133.
- These third coolant inflow pin 131, fifth flow path 132 and third coolant nozzle 133 are configured to discharge the coolant liquid supplied from the swivel base 52 toward the insert tip 13b attached to the whirling tool 13a. is.
- the third coolant inflow pin 131 is fixed to the upper end portion of the waring swivel holder 130, and the upper portion protrudes upward.
- the third coolant inflow pin 131 has the same shape as the first coolant inflow pin 531 .
- the upper portion of the third coolant inflow pin 131 is fitted into the second fitting hole 82b shown in FIG.
- the fifth flow path 132 extends from the lower end of the third coolant inflow pin 131 to the third coolant nozzle 133 .
- the third coolant nozzle 133 protrudes toward the insert tip 13b of the whirling tool 13a.
- a discharge port is formed at the tip of the third coolant nozzle 133 .
- the coolant liquid that has passed through the third coolant inflow pin 131 and the fifth flow path 132 is discharged from the discharge port of the third coolant nozzle 133 toward the insert chip 13b.
- the sled rotation mechanism 14 has the above-described third connection shaft 141 , third transmission shaft 142 , and sled rotor 143 .
- a third connection gear 1411 is fixed to the upper end of the third connection shaft 141 .
- the third connecting gear 1411 meshes with the second driven gear 74 shown in FIG. 4(b).
- a bevel gear 1412 is fixed to the lower end of the third connection shaft 141 .
- FIG. 10(b) shows the thread whirling unit 13 at the reference turning angle.
- the third transmission shaft 142 extends in the X1-axis direction.
- a bevel gear 1421 is fixed to one end of the third transmission shaft 142 .
- This bevel gear 1421 meshes with the bevel gear 1412 of the third connecting shaft 141 .
- a spur gear 1422 is fixed to the other end of the third transmission shaft 142 .
- the sled rotor 143 has a trumpet-shaped cavity that expands from left to right in FIG. 10(b).
- the sled rotor 143 is rotatably supported by two bearings arranged in the housing of the waring swivel holder 130 .
- a spur gear 1431 is fixed to the other end of the sled rotor 143 .
- This spur gear 1431 meshes with the spur gear 1422 of the third transmission shaft 142 .
- a whirling tool 13a is attached to one end face of the thread rotating body 143 with three screws 13c. The whirling tool 13a can be removed from the whirling swivel holder 130 by removing these screws 13c.
- the six insert tips 13b are also attached to the base of the whirling tool 13a by screws, respectively, and can be removed from the base of the whirling tool 13a by removing the screws. Further, as shown in FIGS. 10(a) and 10(d), the third coolant nozzle 133 discharges the coolant liquid from the other end side of the thread rotating body 143 toward the one end side.
- the driving force of the tool rotating motor 522 (see FIG. 2) is transmitted to the whirling tool 13a by the rotational drive transmission mechanism 7 (see FIG. 4B) and the sled rotating mechanism 14 described above. It rotates around the sled center line CLT shown in (b).
- the third bearing case 1300 is positioned in the cylindrical portion of the second swivel cylinder 82 (see FIG. 4). is mated to Also, the third coolant inflow pin 131 is fitted in the second fitting hole 82b (see FIG. 4). These fittings determine the mounting position of the thread whirling unit 13 with respect to the turning base 52 and the mounting angle of the thread whirling unit 13 in the turning direction.
- the second turning cylinder 82 is rotated by driving the turning motor 523 (see FIG. 2), the thread whirling unit 13 synchronizes with the quadruple rotary tool unit 53 following the turning. and turn at the same angle.
- FIG. 11 is a front view of the same tool post as in FIG. 2 showing a second replacement example. 11, the first coolant nozzle 533 (see FIG. 2) and the later-described fourth coolant nozzle 153 (see FIG. 12(a)) are omitted.
- FIG. 11 shows the quadruple rotary tool unit 53 and the hobbing unit 15 at the reference turning angle.
- This hobbing unit 15 corresponds to an example of a second turning unit.
- the mounting structure of the quadruple rotary tool unit 53 to the turning base 52 and the mounting structure of the hobbing unit 15 to the turning base 52 are the same. Therefore, the quadruple rotary tool unit 53 and the hobbing unit 15 can be attached to the swivel base 52 by exchanging their positions.
- the hobbing unit 15 corresponds to an example of a first turning unit.
- the hobbing unit 15 has a hob turning holder 150 and a hob module 16. Hob module 16 is secured to hob pivot holder 150 .
- a fourth bearing case 1500 is formed at the upper end portion of the hob turning holder 150 . This fourth bearing case 1500 is inserted into the base body 521 .
- the hob turning holder 150 is detachably attached to the base body 521 at its upper end portion.
- the hobbing unit 15 is driven by the turning motor 523 (see FIG. 2) to turn a maximum of 180 degrees around the second turning axis B2.
- FIG. 11 shows a state in which the hob cutter 16a is attached to the hob module 16. As shown in FIG. This hob cutter 16a corresponds to an example of a second tool.
- the hob cutter 16a can It corresponds to an example of one tool.
- the hobbing cutter 16a of the hobbing unit 15 is arranged substantially on the second turning axis B2, so that the hobbing unit 15 is less likely to vibrate or bend, and machining can be performed with high accuracy.
- Fig. 12(a) is a left side view of the hobbing unit shown in Fig. 11, and (b) is a cross-sectional view taken along line FF of Fig. 11(a).
- the fourth bearing case 1500, the flange 1501 and the fourth connecting shaft 171 are the same as the first bearing case 5300, the flange 5301 and the fourth connecting shaft shown in FIG. 5(b). 1 It has the same shape as the connecting shaft 911 . Further, the fourth transmission shaft 172 has the same shape as the first transmission shaft 912 except that the shaft length is short.
- Four through holes 1501a are formed in the flange 1501 .
- Four screws 536 passing through the through holes 1501a are respectively screwed into four screw holes 82d formed in the flange-like portion of the second turning cylinder 82 shown in FIG. 15 is detachably attached to the swivel base 52 .
- the hob turning holder 150 has a fourth coolant inflow pin 151 , a sixth flow path 152 and a fourth coolant nozzle 153 .
- These fourth coolant inflow pin 151, sixth flow path 152 and fourth coolant nozzle 153 are configured to discharge the coolant liquid supplied from the swivel base 52 toward the hob cutter 16a.
- the fourth coolant inflow pin 151 is fixed to the upper end portion of the hob turning holder 150, and the upper portion protrudes upward.
- the fourth coolant inflow pin 151 has the same shape as the first coolant inflow pin 531 .
- the upper portion of the fourth coolant inflow pin 151 is fitted into the second fitting hole 82b shown in FIG.
- the sixth flow path 152 extends from the lower end of the fourth coolant inflow pin 151 to the fourth coolant nozzle 153 .
- the fourth coolant nozzle 153 protrudes toward the hob cutter 16a.
- a discharge port is formed at the tip of the fourth coolant nozzle 153 .
- the coolant liquid that has passed through the fourth coolant inflow pin 151 and the sixth flow path 152 is discharged from the discharge port of the fourth coolant nozzle 153 toward the hob cutter 16a.
- a hob rotation mechanism 17 is provided which is connected to the rotation drive transmission mechanism 7 (see FIG. 4B) and transmits the driving force transmitted from the rotation drive transmission mechanism 7 to the hob cutter 16a. It is The hob rotation mechanism 17 has the fourth connection shaft 171 and the fourth transmission shaft 172 described above. A fourth connection gear 1711 is fixed to the upper end of the fourth connection shaft 171 . This fourth connection gear 1711 meshes with the second driven gear 74 shown in FIG. A bevel gear 1712 is fixed to the lower end of the fourth connection shaft 171 .
- FIG. 12(b) shows the hobbing unit 15 at the reference turning angle.
- the fourth transmission shaft 172 extends in the X1-axis direction.
- a bevel gear 1721 is fixed to one end of the fourth transmission shaft 172 .
- This bevel gear 1721 meshes with the bevel gear 1712 of the fourth connecting shaft 171 .
- a spur gear 1722 is fixed to the other end of the fourth transmission shaft 172 .
- the hob module 16 has a fourth rotating shaft 160.
- the hob cutter 16 a is inserted into a shaft having a key groove formed at one end of the fourth rotating shaft 160 and fixed to the fourth rotating shaft 160 with a key and nut 163 (not shown). By removing this nut 163, the hob cutter 16a can be extracted from the fourth rotary shaft 160.
- the fourth rotating shaft 160 is rotatably supported by the hob turning holder 150 by three bearings.
- a spur gear 160 a is fixed to the other end of the fourth rotating shaft 160 .
- the spur gear 160 a of the hob module 16 meshes with the spur gear 1722 of the fourth transmission shaft 172 .
- the driving force of the tool rotating motor 522 (see FIG. 2) is transmitted to the fourth rotating shaft 160 by the rotational drive transmission mechanism 7 (see FIG. 4B), the hob rotating mechanism 17 and the spur gear 1722 described above.
- the hob cutter 16a rotates.
- the fourth bearing case 1500 is positioned at the cylindrical portion of the second swivel cylinder 82 (see FIG. 4). is mated to Also, the fourth coolant inflow pin 151 is fitted in the second fitting hole 82b (see FIG. 4).
- FIG. 13(a) is a front view of a high-speed spindle unit that can be attached to a swivel base in place of the quadruple rotary tool unit or triple rotary tool unit shown in FIG. ) is a right side view of the high-speed spindle unit shown in FIG.
- a cross section is partially shown, and the portion is hatched.
- 13(b) shows a state in which the spindle module 19 is not attached to the spindle turning holder 180.
- FIG. 13(a) shows the high-speed spindle unit 18 at the reference turning angle.
- the high-speed spindle unit 18 can be attached to either the first swivel barrel 81 or the second swivel barrel 82 shown in FIG. 4(b).
- the high-speed spindle unit 18 corresponds to an example of a first turning unit when attached to the first turning cylinder 81, and corresponds to an example of a second turning unit when attached to the second turning cylinder .
- the high-speed spindle unit 18 has a spindle turning holder 180.
- This spindle swivel holder 180 is for holding the spindle module 19 .
- Two mounting holes 18a for mounting the spindle module 19 are formed in the spindle turning holder 180 side by side in the Y1 axis direction. The number of mounting holes 18a may be one, or three or more.
- a screw hole 18b for fixing the spindle module 19 is formed in the spindle turning holder 180. As shown in FIG. Three screw holes 18b are formed for each mounting hole 18a.
- the spindle module 19 is a module such as an electric spindle or an air spindle having an internal motor, and is normally used when it is desired to rotate the rotary tool at a higher speed than the tool rotating motor 522 (see FIG. 2). Used.
- the spindle module 19 is a motorized spindle.
- the spindle module 19 can be removed from the spindle swivel holder 180 by loosening the screw 192 .
- the spindle module 19 has a spindle base 190 .
- the high-speed rotary tool 19a is attached to the spindle base 190 by a collet chuck provided at one end of the spindle base 190. As shown in FIG. By loosening the collet chuck, the high-speed rotary tool 19a can be extracted from the spindle base 190. As shown in FIG. When the high-speed spindle unit 18 is attached to the first swivel barrel 81, the high-speed rotary tool 19a corresponds to an example of the first tool, and when the high-speed spindle unit 18 is attached to the second swivel barrel 82, the high-speed rotary tool 19a. corresponds to an example of the second tool.
- a power cable (not shown) is connected to the other end of the spindle base 190 .
- the motor in the spindle base 190 is driven to rotate the high-speed rotary tool 19a at high speed.
- an air cable for supplying air is connected to the other end of the spindle base 190 .
- a cylindrical protrusion 1800 is formed on the upper end portion of the spindle turning holder 180. As shown in FIG. This protrusion 1800 is a portion that is inserted into the base body 521 .
- the outer diameter of the protrusion 1800 is the same as the outer diameter of the first bearing case 5300 shown in FIG. 5(b).
- a flange 1801 is formed at the base of the protrusion 1800 .
- This flange 1801 has the same shape as the flange 5301 shown in FIG. 5(b).
- Four through holes 1501a are formed in the flange 1801 .
- Four screws 536 passing through these four through-holes 1501a are four screw holes 81d formed in the first turning cylinder 81 shown in FIG.
- the high-speed spindle unit 18 is detachably attached to the swivel base 52 by tightening it into each of the holes 82d.
- the high-speed spindle unit 18 attached to the turning base 52 is driven by a turning motor 523 (see FIG. 2) to turn a maximum of 180 degrees about the first turning axis B1 or the second turning axis B2.
- the spindle turning holder 180 has a fifth coolant inflow pin 181 , a seventh flow path 182 , a fifth coolant nozzle 183 and a sixth coolant nozzle 184 .
- These fifth coolant inflow pin 181, seventh flow path 182, fifth coolant nozzle 183, and sixth coolant nozzle 184 direct the coolant supplied from the swivel base 52 (see FIG. 2) toward the high-speed rotary tool 19a. It is a configuration for discharging.
- the fifth coolant inflow pin 181 is fixed to the upper end portion of the spindle turning holder 180, and the upper portion protrudes upward.
- the fifth coolant inflow pin 181 has the same shape as the first coolant inflow pin 531 .
- the upper portion of the fifth coolant inflow pin 181 is fitted into the first fitting hole 81b formed in the first swivel cylinder 81 shown in FIG. 4 or the second swivel cylinder. It is fitted in a second fitting hole 82b formed in 82.
- the seventh flow path 182 extends from the lower end of the fifth coolant inflow pin 181 and branches midway to connect to the fifth coolant nozzle 183 and the sixth coolant nozzle 184 .
- the fifth coolant nozzle 183 and the sixth coolant nozzle 184 protrude toward the tip of the high speed rotary tool 19a.
- Discharge ports are formed at the tips of the fifth coolant nozzle 183 and the sixth coolant nozzle 184 .
- the coolant liquid that has passed through the fifth coolant inflow pin 181 and the seventh flow path 182 is discharged from the discharge ports of the fifth coolant nozzle 183 and the sixth coolant nozzle 184 in the projecting direction of the high-speed rotary tool 19a.
- the triple rotary tool unit 54, the thread whirling unit 13, the hobbing unit 15, and the high-speed spindle unit 18 can be easily attached to and detached from the swivel base 52 simply by tightening or loosening the screws 536 or 546. can do.
- the quadruple rotary tool unit 53 can be easily attached to and detached from the swivel base 52 only by attaching and detaching the first lower end support member 56 and tightening and loosening the screws 536 .
- the quadruple rotary tool unit 53, the triple rotary tool unit 54, the thread whirling unit 13, the hobbing unit 15, and the high-speed spindle unit 18 are simply referred to as units unless distinguished from each other.
- the swivel base 52 By removing these units from the swivel base 52, it is possible to remove chips outside the cutting chamber 11 and to replace the rotating tools, the whirling tools 13a, the hob cutters 16a and the high-speed rotating tools 19a. can work. Also, maintenance work for those units is easy. Furthermore, since it is easy to select a unit suitable for the processing content and attach it to the swivel base 52, various processing can be performed.
- each unit is provided with a coolant nozzle and a flow path through which the coolant passes, and a structure is provided in which the flow path of the turning base 52 and the flow path of the unit are connected by mounting the unit, and when the unit turns, the coolant is discharged.
- the direction also follows the turning. As a result, the coolant can be discharged in a direction suitable for machining even if the turning angle of the unit changes, so machining accuracy is improved.
- the tool life is improved due to the improved discharge of chips and scraps and improved cooling performance of the tool.
- the coolant inflow pin and the fitting hole that connect the flow path of the turning base 52 and the flow path of the unit also serve as a positioning structure for the turning base 52 and the unit, the number of parts of the NC lathe 1 can be reduced.
- the coolant inflow pin and the fitting hole also serve as a positioning structure, there is almost no gap between them, so it is possible to suppress leakage of the coolant liquid from between the coolant inflow pin and the fitting hole. That is, it is possible to enhance the sealing effect of the portion of the coolant flow path that is separated by attaching and detaching the unit.
- the quadruple rotary tool unit 53 is less likely to bend. Therefore, it is possible to prevent a decrease in machining accuracy in machining using the one-side rotary tool 93 a and the other-side rotary tool 93 b attached to the lower end side of the quadruple rotary tool unit 53 .
- two units can be attached to the swivel base 52, and each attached unit can be swiveled, so that more diverse processing becomes possible.
- FIG. 14 is a front view of a tool post similar to FIG. 2 showing a modified example of the tool post.
- the tool post 5 of this modified example has a quadruple rotating tool unit 53 attached to the second swivel cylinder 82 and a second lower end support member 560. It differs from the tool post 5 shown in FIG. Also, three positioning pins 5120 and two screw holes (not shown) are formed on the left side of the moving table 51 in FIG. These three positioning pins and two screw holes are for positioning the second lower end support member 560 and attaching it to the moving table 51 .
- the second lower end support member 560 is bilaterally symmetrical with the first lower end support member 56 .
- This modification also has the same effect as the previous embodiment. Moreover, there is an effect that high-precision machining can be performed even if a tool unit long in the Y1-axis direction is attached to both the first turning cylinder 81 and the second turning cylinder 82 .
- the present invention is not limited to the above-described embodiments, and can be modified in various ways within the scope of the claims.
- an example of applying the present invention to the NC lathe 1 was shown, but the present invention may be applied to other machine tools such as machining centers.
- a separate tool rest may be provided for the opposed spindle 61 .
- a brake mechanism may be provided to maintain the rotation angle of the second swivel barrel 82 so that the second swivel barrel 82 does not rotate due to the load during machining.
- two turning motors 523 may be provided, and the first turning cylinder 81 and the second turning cylinder 82 may be turned by different motors.
- the control device 2 may separately control the two motors to cause the first turning barrel 81 and the second turning barrel 82 to perform different turning motions.
- a coolant inflow pin may be formed in the first turning cylinder 81 and the second turning cylinder 82, and a fitting hole may be formed in which the coolant inflow pin is fitted in the turning holder and the flow path is connected.
- a positioning pin for determining the positions of the first turning cylinder 81, the second turning cylinder 82, and the turning unit in the turning direction may be provided separately from the inflow pin.
- the first rotary tool module 93 may be detachably attached to the first swivel holder 530 .
- the second rotary tool module 94 may be detachably attached to the second pivot holder 540 .
- the hob module 16 may be detachably attached to the hob turning holder 150 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Machine Tool Units (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
Description
前記刃物台は、前記ワークを加工する第1工具が装着され前記主軸中心線と直交する第1軸方向に沿った第1旋回軸線を旋回中心として旋回可能な第1旋回ユニットと、該第1旋回ユニットが取り付けられた旋回ベースとを有するものであり、
前記第1旋回ユニットは、前記旋回ベースに着脱自在なものであることを特徴とする。
前記第1旋回ユニットは、前記旋回ベースに取り付けられた状態において前記第1流路に連結されて該第1流路を通過したクーラント液が供給される第2流路と、該第2流路を通過したクーラント液を吐出するクーラントノズルとを有するものであってもよい。
前記第1旋回ユニットは、前記被嵌合部に嵌合する嵌合部を有し、該嵌合部が該被嵌合部に嵌合することで前記旋回ベースに対する取付位置が決まるものであり、
前記被嵌合部は、前記第1流路が接続されたものであり、
前記嵌合部は、前記第2流路が接続されたものであってもよい。
前記刃物台は、前記第1旋回ユニットの下端部分を支持する下端支持部を備えたものであってもよい。
前記第2旋回ユニットは、前記旋回ベースに着脱自在なものであってもよい。
5 刃物台
31 主軸
52 旋回ベース
53 四連回転工具ユニット(第1旋回ユニット)
B1 第1旋回軸線
CL1 主軸中心線
93a 一方側回転工具(第1工具)
W ワーク
Claims (6)
- ワークを把持して主軸中心線を中心として回転可能な主軸と、刃物台とを備えた工作機械において、
前記刃物台は、前記ワークを加工する第1工具が装着され前記主軸中心線と直交する第1軸方向に沿った第1旋回軸線を旋回中心として旋回可能な第1旋回ユニットと、該第1旋回ユニットが取り付けられた旋回ベースとを有するものであり、
前記第1旋回ユニットは、前記旋回ベースに着脱自在なものであることを特徴とする工作機械。 - 前記旋回ベースは、前記第1旋回ユニットとして、回転工具が装着される回転工具ユニット、スレッドワーリングユニット、ホブ加工ユニットおよび高速スピンドルユニットのうち、少なくとも2つが付け替え自在なものであることを特徴とする請求項1記載の工作機械。
- 前記旋回ベースは、クーラント液が通過する第1流路を有するものであり、
前記第1旋回ユニットは、前記旋回ベースに取り付けられた状態において前記第1流路に連結されて該第1流路を通過したクーラント液が供給される第2流路と、該第2流路を通過したクーラント液を吐出するクーラントノズルとを有するものであることを特徴とする請求項1または2記載の工作機械。 - 前記旋回ベースは、被嵌合部を有するものであり、
前記第1旋回ユニットは、前記被嵌合部に嵌合する嵌合部を有し、該嵌合部が該被嵌合部に嵌合することで前記旋回ベースに対する取付位置が決まるものであり、
前記被嵌合部は、前記第1流路が接続されたものであり、
前記嵌合部は、前記第2流路が接続されたものであることを特徴とする請求項3記載の工作機械。 - 前記第1旋回ユニットは、その上端部分が前記旋回ベースに取り付けられたものであり、
前記刃物台は、前記第1旋回ユニットの下端部分を支持する下端支持部を備えたものであることを特徴とする請求項1~4のうちいずれか1項記載の工作機械。 - 前記刃物台は、前記ワークを加工する第2工具が装着され、前記第1軸方向に沿った第2旋回軸線を旋回中心として旋回可能な第2旋回ユニットを有するものであり、
前記第2旋回ユニットは、前記旋回ベースに着脱自在なものであることを特徴とする請求項1~5のうちいずれか1項記載の工作機械。
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JP2019181653A (ja) | 2018-04-17 | 2019-10-24 | 株式会社ツガミ | 工作機械 |
KR20210112744A (ko) * | 2020-03-06 | 2021-09-15 | 한화정밀기계 주식회사 | 분리교체형 공구대를 구비한 공작기계 |
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JP2003019639A (ja) * | 2001-07-06 | 2003-01-21 | Star Micronics Co Ltd | 工作機械のクーラント噴出装置と工作機械 |
JP2019181653A (ja) | 2018-04-17 | 2019-10-24 | 株式会社ツガミ | 工作機械 |
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