CN207309451U - Work-supporting means and lathe - Google Patents

Abstract

Work-supporting means and lathe are the utility model is related to, which is used to support workpiece.Work-supporting means has：Rotation axis；Housing, it houses rotation axis, which is tubular；Turntable, it is used to support workpiece；And labyrinth sealing portion, between housing and turntable, labyrinth sealing portion has for it：Raised line, it is protruded from an end face of housing towards the lower surface of turntable, and the raised line is in the annular shape with rotating shaft coaxle；And slot, it is located at the lower surface of turntable, and raised line can be inserted into the slot, which is circle, and the part opposite with the outer circumferential surface of outer circumferential surface towards the slot of raised line tilts.Work-supporting means can make the rotations such as rotation axis and host body to turntable is toppled over, with the rotation so that in the case that raised line is toppled over, raised line can suppress the outer circumferential surface that the foreign matters such as cooling agent cross raised line well.

Description

Work-supporting means and lathe

Technical field

Work-supporting means and lathe are the utility model is related to, which is used to support workpiece.

Background technology

Lathe can be by work mounting s on the table, and can carry out milling to workpiece using the cutter for being assemblied in main shaft Cut processing, screw thread process etc..Lathe has main tapping, Z axis mobile device, XY shaft moving devices and main shaft driving device.Main shaft Head by main shaft can it is rotating in a manner of support the main shaft, wherein, can be by tool assembly in main shaft.Z axis mobile device is used to make (Z-direction) moves back and forth main tapping along the vertical direction.XY shaft moving devices are used to make main tapping along the longitudinal direction and right and left Moved back and forth to (X-direction and Y direction).Main shaft driving device is used for drive shaft, is rotated main shaft.

Sometimes, work-supporting means can be used as workbench by lathe, which be able to can be rotated with workpiece Mode support the workpiece.Japanese Unexamined Patent Publication 2013-188800 publications disclose a kind of work-supporting means.Workpiece branch Bearing apparatus has the host body of rotation axis, turntable and tubular.Host body can coaxially be carried out with rotation axis with the host body Rotating mode houses the rotation axis.Turntable has bearing-surface and opposite face.Bearing-surface is used to support workpiece.Opposite face and rotation The one end of shaft is connected, and opposite with an end face of host body.Turntable is rotated by the rotation of rotation axis, So that workpiece is rotated.

Work-supporting means has labyrinth sealing portion between host body and turntable.Labyrinth sealing portion has raised line And slot.Opposite face of the raised line from an end face of host body towards turntable protrudes, and the raised line is in the circle with rotating shaft coaxle Ring-type.Slot is located at the opposite face of turntable, and raised line can be inserted into the slot, and it is rounded that this inserts grain.Labyrinth sealing portion energy Enough suppress foreign matter to enter in host body.

In order to carry out more complicated mechanical processing, for work-supporting means, except needing rotation axis to be rotated around axle center Outside, it is also necessary to the rotation such as rotation axis and host body is toppled over to making turntable.

Sometimes, in the rotation with work-supporting means so that after the raised line in labyrinth sealing portion is toppled over, cooling agent It can enter Deng foreign matter in host body.

Utility model content

The purpose of this utility model is that, there is provided work-supporting means and lathe, which can be well Suppress foreign matter enter by rotation axis can it is rotating in a manner of house the rotation axis host body in.

The work-supporting means of technical solution 1 has：Rotation axis；Host body, it can be with the host body with the rotation axis Coaxially carry out rotating mode and house the rotation axis, which is tubular；Turntable, its with bearing-surface and opposite face, The bearing-surface be used for support workpiece, the opposite face and the one end of the rotation axis are connected, and with one of the host body End face is opposite；And labyrinth sealing portion, its between the host body and turntable, wherein, labyrinth sealing portion tool Have：Raised line, its from one end face of the host body towards the opposite face of the turntable protrude, the raised line be in The annular shape of the rotating shaft coaxle；And slot, it is located at the opposite face of the turntable, can be inserted into the raised line The slot, the slot are circle, and the part opposite with the outer circumferential surface of outer circumferential surface towards the slot of the raised line tilts.

The part opposite with the outer circumferential surface of the outer circumferential surface of raised line towards slot tilts.Work-supporting means can make rotation The rotation such as axis and host body is to turntable is toppled over, with the rotation so that after raised line is toppled over, raised line can press down well The foreign matters such as cooling agent processed cross the outer circumferential surface of raised line.Therefore, work-supporting means can suppress foreign matter well into rotation Axis can rotating mode house in the host body of the rotation axis.

The work-supporting means of technical solution 2 has multiple labyrinth sealing portions.

After the outer circumferential surface entrance that the raised line in a labyrinth sealing portion is crossed in foreign matter, it can utilize and be located at than this The labyrinth sealing portion of the position of labyrinth sealing portion in the inner part enters to suppress foreign matter.Therefore, it is possible to suppress more foreign matters Entrance.

The work-supporting means of technical solution 3 has：Protuberance, in the annular shape with the rotating shaft coaxle, this is prominent for it Go out the phase for being partially toward the turntable of raised line in the inner part described in ratio of the portion from one end face of the host body Opposite protrudes；And sealing ring, it gets up closure between the opposite face and protuberance.Sealing ring can prevent from crossing labyrinth type The foreign matter that sealing is come in enters in housing.

The lathe of technical solution 4 has：Above-mentioned work-supporting means；And processing main shaft device, it is used for the workpiece The workpiece that supporting arrangement is supported is processed.

Machining etc. can be carried out using the workpiece that processing supports work-supporting means with main shaft device.Lathe energy It is enough suppress well foreign matter enter by rotation axis can it is rotating in a manner of house the rotation axis host body in.

Brief description of the drawings

Fig. 1 is the stereogram of the lathe of embodiment.

The stereogram of work-supporting means when Fig. 2 is from the positive upper right side of work-supporting means.

The stereogram of work-supporting means when Fig. 3 is from the positive upper left side of work-supporting means.

Fig. 4 is the top view of turntable and C axis drive divisions.

Fig. 5 is the sectional view obtained along after V-V line cutting in Fig. 4.

Fig. 6 is the enlarged drawing of the part shown in the reference numeral A in Fig. 5.

Fig. 7 is the explanatory drawin for the effect that the inclination of the outer circumferential surface of raised line is played.

Embodiment

In the following, the lathe based on brief description of the drawings the utility model.It is indicated by arrows in Fig. using attached in following explanation Top to bottom, left and right, front and rear.Fig. 1 is the stereogram of lathe 100.Lathe 100 is arranged on setting face F, and operator can be in lathe 100 front operates lathe 100, and workpiece is placed in lathe by operator or is taken off workpiece from lathe.

Lathe 100 has pedestal 10, XY shaft moving devices 20, column 22, Z axis mobile device 23, tool changing device 24, main shaft First 25, work-supporting means 30 etc..Work-supporting means 30 is used to support workpiece, and lathe 10 can utilize and be assemblied in main tapping 25 cutter (illustration omitted) is processed workpiece.Can be in the bottom of main tapping 25 in a manner of cutter can be loaded and unloaded Assemble cutter.Cutter can be replaced in circular tool changing device 24 using what is set around main tapping 25.Lathe 100 main tapping 25 can in X direction, Y-direction and Z-direction movement, workpiece can rotate around two axis directions.It is general next Say, when main tapping 25 moves, axis along which line direction is X-axis, and workpiece is around the axis direction rotating feelings parallel with X-axis Under condition, the rotation axis of workpiece in this case is accordingly known as A axis with X-axis, the axis along which when main tapping 25 moves Line direction is Y-axis, and workpiece is in the case of the axis direction parallel with Y-axis is rotating, with Y-axis accordingly by work in this case The rotation axis of part is known as B axle, and when main tapping 25 moves, axis along which line direction is Z axis, and workpiece is around parallel with Z axis In the case of axis direction is rotating, the rotation axis of workpiece in this case is accordingly known as C axis with Z axis.With regard to this embodiment party For the work-supporting means 30 of formula, by the rotation of described later 40 workpiece can be made to be rotated around A axis, can utilize and fix In the C axis drive division 60 (with reference to Fig. 2 and Fig. 3) of platform 40, workpiece is set to be rotated around C axis.

Pedestal 10 has rack 11, fast headstock 13, work stage 14 etc..Rack 11 is cuboid longer in the longitudinal direction The babinet of shape.Fast headstock 13 is in rectangular-shape longer in the longitudinal direction, positioned at the rear of the upper surface part 11a of rack 11 Portion, the fast headstock 13 are supported with XY shaft moving devices 20 in upside.Work stage 14 is configured in the front part of upper surface part 11a Left part and right part.Work stage 14 has the supporting station 14a of side and rearward the supporting station 14b of side on the front.Supporting station 14a, branch Cushion cap 14b is in the form of a column, and supporting station 14a and supporting station 14b are fixed with work-supporting means 30 in upper surface.Column 22 is located at XY On shaft moving device 20.XY shaft moving devices 20 have ball screw framework.Column 22 can be in the driving of ball screw framework Under along the longitudinal direction with left and right directions move.Main tapping 25 is connected by Z axis mobile device 23 with column 22.Z axis movement dress Putting 23 has ball screw framework, and main tapping 25 can be moved along the vertical direction using ball screw framework relative to column 22. By to X-direction drive motor (illustration omitted) possessed by XY shaft moving devices 20 and Y-direction drive motor (illustration omitted) And Z-direction drive motor (illustration omitted) is controlled possessed by Z axis mobile device 23, make X-direction drive motor, the Y Direction drive motor and Z-direction drive motor are driven, be driven each ball screw framework, so that main tapping 25 Along the longitudinal direction, left and right directions and above-below direction movement.Main tapping 25 is in bulk, in internal side on the front with along the vertical direction The main shaft (illustration omitted) of extension can rotating mode keep the main shaft.Main shaft be able to can be loaded and unloaded in bottom with cutter Mode keep cutter.Main shaft is connected with the spindle motor 25a fixed in the upper end of main tapping 25.Spindle motor 25a energy Enough main shaft is set to be rotated around axle center, so as to make the cutter rotation in the assembling of the bottom of main shaft.Lathe 100 can be to workpiece branch The workpiece that bearing apparatus 30 is supported carries out machining.

The stereogram of the work-supporting means 30 when Fig. 2 is from the positive upper right side of work-supporting means 30. The stereogram of the work-supporting means 30 when Fig. 3 is from the positive upper left side of work-supporting means 30.Fig. 4 is rotation The top view of platform 50 and C axis drive division 60.Work-supporting means 30 have gear-box 31, bearing housing 34, A axis motor 36, platform 40, Turntable 50, C axis drive division 60 etc..Platform 40 has positioned at the axle portion 41 in left side, the axle portion 41 positioned at right side and by each axle portion 41 The baseplate part 42 linked up.Baseplate part 42 is longer in the lateral direction, and C axis drive division 60 is fixed with below central portion. Axle portion 41 positioned at left side and the axle portion 41 positioned at right side are cylindrical, and the supporting of gear-box 31 is positioned at the axle portion 41 on right side, axis Hold axle portion 41 of the supporting of case 34 positioned at left side.Each axle portion 41 is using left and right directions as axle center, and each axle portion 41 is coaxial each other.Substrate Portion 42 has turntable 50 in the top of central portion.

Gear-box 31 house positioned at platform 40 right side axle portion 41, gear-box 31 with this be located at platform 40 right side axle portion 41 The axle portion 41 can be supported around the rotating mode of X-axis.In the following description, the central axis of axle portion 41 is labeled as A axis.A Axis is the axis direction parallel with X-axis.A axis motor 36 is installed on the front side of gear-box 31, and the rotation axis of A axis motor 36 (is omitted Diagram) it is directed toward the inside of gear-box 31.The rotation axis of A axis motor 36 can be rotated around Y-axis, so as to drive and the A axis horses The gear being connected up to the top ends of 36 rotation axis.Gear is for example with gear hobbing camshaft and cam follower, so that gear Can be by around the rotation around A axis being converted into being somebody's turn to do the rotating orthogonal around Y-axis of Y-axis.The rotation axis of A axis motor 36 links There is gear hobbing camshaft, the rotating shaft coaxle of the gear hobbing camshaft and A axis motor 36, multiple cam followers are with gear hobbing camshaft The mode that cam is meshed with cam follower is configured on the periphery of the end of axle portion 41.With regard to gear hobbing camshaft cam and Speech, can also use spherical cam, which will not only produce backlash under static state, but also under rotation status Backlash will not be produced.Gear-box 31 has mounting base 31a at four angles of lower part, and gear-box 31 is fixed on position by screw etc. Work stage 14 in right side.Bearing housing 34 houses the axle portion 41 positioned at the left side of platform 40, and bearing housing 34 is located at a left side for platform 40 with this The axle portion 41 of side can support the axle portion 41 around the rotating mode of A axis.Front and rear of the bearing housing 34 in lower part has peace Seat 34a is filled, bearing housing 34 is fixed on the work stage 14 positioned at left side by screw etc..

Fig. 5 is the sectional view obtained along after V-V line cutting in Fig. 4.Turntable 50 is in discoideus.Turntable 50 Upper surface 50a constitutes the bearing-surface for supporting workpiece.The lower surface 50b of turntable 50 is constituted and 60 phase of C axis drive division To opposite face.C axis drive division 60 has housing 61, motor 79, rotation axis 80, encoder 81 etc..Housing 61 has stem portion 62nd, bottom 63, bearing bracket stand 64, upper plate 65 etc., housing 61 is cylindrical.Stem portion 62 is cylindrical shape, has heat sink in periphery. Stem portion 62 links bottom 63 in bottom, links upper plate 65 by bearing bracket stand 64 in upper end.Housing 61 is in inside to rotate Axis 80 can coaxially carry out rotating mode with the housing 61 and house the rotation axis 80.

Bearing bracket stand 64 has cylindrical portions and flange part.Cylindrical portions maintain bearing 75.Flange part is in annular shape, flange Portion is outstanding from the bottom of the outer circumferential surface of cylindrical portions.Overall bottom 63 is in annular shape, and bearing 76 is maintained in inner peripheral surface, The outer peripheral edge portion of bottom 63 is connected with stem portion 62.By the way that bearing 75 is embedded in bearing bracket stand 64, bearing 76 is embedded in bottom 63, And rotation axis 80 is inserted into bearing 75 and bearing 76 so that housing 61 can by rotation axis 80 can around C axis it is rotating in a manner of support The rotation axis 80.Its lower surface 50b is attached at the upper end of rotation axis 80 using screw etc. by turntable 50, so that turntable 50 It can be rotated together with rotation axis 80 around C axis.C axis means the axis direction of rotation axis 80.Moreover, in general, C axis Mean the axis direction parallel with Z axis, but in the utility model, since platform 40 can rotate, according to C direction of principal axis Can because of the rotation of this 40 and changed situation is handled.

Motor 79 has stator 79a and rotor 79b.Stator 79a is fixed on the inner circumferential of stem portion 62, and rotor 79b is fixed on The above-below direction center section of the outer circumferential surface of rotation axis 80.C axis drive division 60, which has, to be used to connect supply lines (illustration omitted) Connecting portion 82 (with reference to Fig. 4), C axis drive division 60 by connecting portion 82 from supply lines by being powered, revolve rotor 79b Turn, so that rotation axis 80 rotates.Therefore, turntable 50 can be rotated around C axis.

Upper plate 65 has in centre in annular shape and supplies 80 perforative axis hole of rotation axis.The lower surface 50b of turntable 50 with It is opposite that the upper surface 65a of upper plate 65 separates a little compartment of terrain.Therefore, even if turntable 50 is rotated, the following table of turntable 50 Face 50b and the upper surface 65a of upper plate 65 will not be worn each other.The upper surface 65a of upper plate 65 constitutes an end of housing 61 Face, the lower surface 50b of turntable 50 constitute opposite face.

Fig. 6 is the enlarged drawing of the part shown in the reference numeral A in Fig. 5.Work-supporting means 30 is under turntable 50 There are oil sealing 68 (sealing ring) and two labyrinth sealing portions 66 between surface 50b and the upper surface 65a of upper plate 65.Labyrinth type is close Envelope portion 66 is the circle coaxial with rotation axis 80.Two labyrinth sealing portions 66 are along using the axle center of rotation axis 80 as the circle in the center of circle Arranged radially, another labyrinth sealing portion 66 is configured with the outside in a labyrinth sealing portion 66.Labyrinth sealing portion 66 With raised line 66a and slot 66b.Slot 66b is opposite with raised line 66a along raised line 66a.The lower surface 50b of turntable 50 has To concave first groove, 51 and second groove 52 in upside.First groove 51 and the second groove 52 are in and turntable 50 and rotation The coaxial circle of axis 80.First groove 51 is connected with the second groove 52, and the second groove 52 is located at leans on center axis than the first groove 51 Position, and 52 to the first groove of the second groove 51 is deep.Slot 66b is located at the portion of the outer side of the bottom surface of the first groove 51 Point, slot 66b is to continue up the concave groove in side from the bottom surface of the first groove 51, and slot 66b is in the ring coaxial with rotation axis 80 Shape.Slot 66b is sunken along raised line 66a, and two slot 66b are connected.In the wheel of the longitudinal section of the slot 66b of attached state Exterior feature is in letter M shapes.The slot 66b of outer side is connected with the peripheral edge portion of the first groove 51.Upper tables of the raised line 66a from upper plate 65 The lower surface 50b sides of face 65a to turntable 50 are prominent, and raised line 66a is in the annular shape coaxial with rotation axis 80.Raised line 66a is located at The part opposite with slot 66b of upper surface 65a, raised line 66a are inserted into slot 66b.Two raised line 66a are connected, in connected The profile of the longitudinal section of the raised line 66a of state is in letter M shapes.

The part in letter M shapes and the part in letter M shapes of slot 66b of raised line 66a is spaced apart a little gap (example each other Such as 0.5mm or so) it is opposite, so as to form labyrinth sealing portion 66.Positioned at the inner peripheral surface of the raised line 66a by axle center side position Bottom be located at the outside of slot 66b.The outer circumferential surface 66c of raised line 66a is tilted towards outside, i.e. outer circumferential surface 66c is with court Go to tilt to outer peripheral side to slot 66b, outer circumferential surface 66c forms the outermost periphery of toroidal.The inclination of outer circumferential surface 66c Angle r1 be in platform 40 not in the state of the rotation of A axis, outer circumferential surface 66c relative to parallel with the setting face F of lathe 100 face institute into Angle.In the present embodiment, it is convex formed in the upper surface 65a of upper plate 65 in platform 40 not in the case of A axis is rotating The face of bar 66a is parallel with setting face F.What inclination angle r1 in Fig. 6 was represented be by outer circumferential surface 66c with it is outer in the 65a of upper surface The angle that the part in week is formed.

In the present embodiment, it is assumed that the state of the normal direction of the upper surface 50a of turntable 50 upward (such as is schemed State shown in 2), i.e., platform 40 not around A axis rotation in the state of axle portion 41 angle be 0 degree, then, axle portion 41 can be around A Axis is rotated to any angle in the range of+R degree~-R degree.R is absolute value.Inclination angle r1 is less than subtracts workpiece from 180 degree Supporting arrangement 30 the value (that is, 180-R ＞ r1) that obtains after the value R of the rotating anglec of rotation.In the present embodiment, it is assumed that 90 ≤ R ＜ 180, then inclination angle r1 is acute angle.After work-supporting means 30 is rotated up to angle, the position of raised line 66a In the part of outer circumferential side still in relation to the upwardly inclination oblique r2 (=180-R-r1) parallel with the setting face F of lathe 100 Degree (with reference to Fig. 7).

Protuberance 69a is partially toward under turntable 50 from the opposite with the second groove 52 of the upper surface 65a of upper plate 65 Surface 50b sides protrude.Protuberance 69a is in the annular shape coaxial with rotation axis 80, and protuberance 69a is inserted into the second groove 52. Protuberance 69a is spaced apart opposite with gap with the second groove 52.Protuberance 69a has the first excrescence 690 and the second excrescence 691.First excrescence 690 is less than the annular shape of the width of the first excrescence 690 in width in annular shape, the second excrescence 691, Second excrescence 691 is located at the position more upper than the first excrescence 690.Oil sealing 68 is embedded in the outside of the second excrescence 691.Oil Envelope 68 has the lip 68a and lip 68b arranged up and down in outer circumferential surface, and lip 68a and lip 68b are respectively along the oil sealing 68 Outer circumferential surface extension, and rotating around the oil sealing 68 outer circumferential surface formed one circle.The lip 68a and lip 68b and second of oil sealing 68 The wall that the same lip 68a and lip 68b of groove 52 are opposite connects.Oil sealing 68 is by the lateral surface of the second excrescence 691 and Closure is got up between two grooves 52 part relative to each other, so that by the lower surface 50b of protuberance 69a and turntable 50 phases each other To part between closure get up.Formed in the part between protuberance 69a and innermost raised line 66a of upper surface 65 There is rounded space 67.Upper surface 65a is more than labyrinth sealing portion 66 with standoff distances of the lower surface 50b at space 67 The standoff distance of raised line 66a and slot 66b.

Arrestment mechanism is equipped with the lower face side of upper plate 65.Upper plate 65 has flange part and two cylindrical portions in annular shape. One cylindrical portion extends downwards from the outer rim in discoideus wall portion for forming upper surface 65a.Flange part is under cylindrical portion Hold outstanding.Another cylindrical portion extends downwards from the outer rim of flange part.Outer circumferential surface of the rotation axis 80 in upper end has Flange, brake plate 70 are fixed on flange by screw etc..Brake plate 70 has in centre supplies 80 perforative hole of rotation axis, brake plate 70 in discoideus.Brake plate 70 is opposite with the lower surface of upper plate 65.

Piston 71 is configured with the outer circumferential surface of the cylindrical portions for maintaining bearing 75 of bearing bracket stand 64.Piston 71 has cylinder Part and flange part, flange part is outstanding from the bottom of cylindrical portions, and flange part is in annular shape.The inner side of upper plate 65 is formed The cylinder being inserted into for piston 71.The upper surface of the cylindrical portion office of piston 71 is opposite with the lower surface of brake plate 70.Work mounting s Device 30 is moved up and down by piston 71, come the action for carrying out braking maneuver and releasing braking.

The bottom 63 of housing 61 has upper lateral part 63a, central portion 63b and following side 63c.Upper lateral part 63a has annular shape Main part 630, the first cylindrical portion 631 and the second cylindrical portion 632.First cylindrical portion 631 is outside the upper surface of main part 630 Peripheral part is upwardly projecting.Inner peripheral portions of second cylindrical portion 632 from the upper surface of main part 630 are upwardly projecting.First circle The upper surface of canister portion 631 connects with the lower face of stem portion 62.Second cylindrical portion 632 is connected with the inner peripheral surface of main part 630, the Two cylindrical portions 632 maintain bearing 76.Central portion 63b has cylindric main part 633 and circular flange part 634.Flange Portion 634 is protruded inwardly from the upper end of the inner peripheral surface of main part 633.The upper surface of the main part 633 of central portion 63b and flange The upper surface in portion 634 connects with the lower surface of the main part 630 of upper lateral part 63a.Following side 63c has circular main part 635th, cylindrical portion 636 and circular flange part 637.The upward pleurapophysis of outer peripheral edge portion of the cylindrical portion 636 from the upper surface of main part 635 Go out.Flange part 637 protrudes laterally from cylindrical portion 636.The upper surface of the flange part 637 of following side 63c and the master of central portion 63b The lower face in body portion 633 connects.The multiple screws circumferentially arranged run through the first cylindrical portion of upper lateral part 63a along the vertical direction 631st, the flange part of the outer peripheral edge portion of the main part 630 of upper lateral part 63a, the main part 633 of central portion 63b and following side 63c 637, so that upper lateral part 63a, central portion 63b and following side 63c be linked up.

It is linked with the lower face of rotation axis 80 in centre plectane 77 with hole.The following side 63c of bottom 63 has The annular portion 638 protruded inwardly from the Inner peripheral portions of main part 635.Plectane 77 and annular portion 638 are opposite, and plectane 77 with The part relative to each other of annular portion 638 has labyrinth sealing portion.

The inner circumferential side of the centrally located portion 63b of encoder 81.Encoder 81 is the angle detector of optical profile type or magnetic-type etc.. Encoder 81 by using by the detecting element pair configured in a manner of fixed so as to the discoid component that rotating mode configures It is detected Deng subject, to detect angle.

For work-supporting means 30, turntable 50 issues C axis drive division 60 according to by control device (illustration omitted) Control signal rotated.The rotation axis of A axis motor 36 is according to the control that A axis motor 36 is issued by control device (illustration omitted) Signal processed is rotated, so that rotary force passes to the gear being housed in gear-box 31, and then is made in gear-box 31 Axle portion 41 is rotated around A axis.The workpiece that platform 40 and turntable 50 are supported is rotated by the rotation of axle portion 41.Lathe 100 After the rotation stopping of axle portion 41 is made, pair workpiece surface faced with cutter progress machining etc..C axis drive division 60 Rotation axis 80 is rotated according to the control signal for being sent to C axis drive division 60, so that the rotation being connected with rotation axis 80 The workpiece that platform 50 and turntable 50 are supported is rotated around C axis.As long as there is no mechanically disturb, it becomes possible to which work piece configuration exists Around any angle of C axis., can be to on hemisphere by by around the rotation of C axis and the rotation combination carried out using platform 40 Any direction for normal direction workpiece surface carry out machining, the hemisphere is with the normal of the upper surface 50a of turntable 50 Direction is zenith direction.C axis drive division 60 make workpiece be carried out at high speed rotation, cutter is against on workpiece, thus to workpiece into Row turnery processing.

In the case of C axis drive division 60 to be utilized makes workpiece rotating, piston 71 is pressed downward, brake plate 70 is left upper plate 65 lower surface is braked to release, so as to allow rotation axis 80 to be rotated.In the case where workpiece to be made stops rotating, Upward push piston 71, makes the upper surface of piston 71 that brake plate 70 to be withstood on to the lower surface of upper plate 65, so as to be braked, limitation rotation The rotation of shaft 80.

, can be by being overheated to suppress workpiece and cutter toward pouring cooling agent on workpiece and cutter when being processed to workpiece. The foreign matter such as cooling agent and chip can disperse onto work-supporting means 30.There are such possibility：Since cooling agent, chip etc. are different A part for thing can also fall on the upper surface 65a of the upper plate 65 of C axis drive division 60, therefore, the one of the foreign matter such as the cooling agent, chip Gap that partly can be between upper surface 65a and turntable 50 enters in housing 61.In the present embodiment, labyrinth sealing portion 66 raised line 66a and slot 66b is spaced apart a little opposite with gap, which can prevent foreign matter from entering.Oil sealing 68 foreign matters that can prevent from crossing to come in labyrinth sealing portion 66 enter in housing 61.In cooling agent because capillary phenomenon enters labyrinth In the case of the gap of formula sealing 66, can using space 67 come suppress the cooling agent enter than space 67 more in the inner part in Portion.There are such possibility：Turntable 50 upper surface 50a upward in the case of, cooling agent can accumulate in the upper of upper plate 65 On the 65a of surface.Since raised line 66a is upwardly projecting from upper surface 65a, as long as cooling agent does not have to accumulate to raised line 66a's More than height, it becomes possible to the entrance of cooling agent is prevented using labyrinth sealing portion 66.Fig. 7 is inclining for the outer circumferential surface of raised line 66a The explanatory drawin of the effect tiltedly played.What Fig. 7 was represented is that platform 40 starts to rotate based on the state in Fig. 6 so that 80 He of rotation axis Housing 61 etc. have rotated the state after+R degree (so that side have rotated R degree forward for turntable 50 and workpiece).Labyrinth in the outer part The outer circumferential surface 66c of the raised line 66a of formula sealing 66 rolls oblique r2 (r2 upwards relative to the face f1 parallel with the setting face F of lathe =180-R-r1) degree.Upper surface 65a and face f1 angulations are R.Similarly, labyrinth sealing portion 66 in the inner part The outer circumferential surface 66c of raised line 66a rolls oblique r2 degree upwards relative to the face f2 parallel with the setting face F of lathe.Upper surface 65a and face F2 angulations are R.In the case of isoclinal by the rotation turntable 50 of platform 40 and housing 61, cooling agent etc. is different Thing is not easy to cover outer circumferential surface 66c, so as to suppress the inner side that foreign matter enters housing 61 well.

Due to there is more than two labyrinth sealing portions 66, even if the foreign matter such as cooling agent has crossed in the outer part convex Bar 66a, also can prevent the entrance of cooling agent using raised line 66a in the inner part.Therefore, work-supporting means 30 copes with There is the situation of a greater amount of foreign matters.

The number in labyrinth sealing portion 66 is not limited to two or one, can also be more than three.Can also It is that the outer circumferential surface in a part of labyrinth sealing portion 66 in multiple labyrinth sealing portions 66 tilts.Can also be two raised lines 66a is not attached to, two slot 66b be also not attached to or, two raised line 66a are set spaced by a predetermined distance, two slots 66b is set spaced by a predetermined distance.It can also replace oil sealing 68 and use other sealing rings such as O-ring seals.

As it appears from the above, in the present embodiment, the outer circumferential surface 66c of raised line 66a is towards slot 66b and outer circumferential surface 66c Opposite part tilts.Work-supporting means 30 can be by platform 40 around A axis rotation, rotate rotation axis 80 and the grade of housing 61 To turntable 50 is toppled over, in the case of raised line 66a is inclined, the foreign matters such as cooling agent can be suppressed well and cross raised line 66a Outer circumferential surface 66c.Therefore, work-supporting means 30 can suppress well foreign matter enter by rotation axis 80 can it is rotating in a manner of House in the housing 61 of the rotation axis 80.

Work-supporting means 30 has multiple labyrinth sealing portions 66, therefore, a labyrinth sealing portion can be crossed having In the case that the foreign matter of the amount of the height of 66 raised line 66a enters, it can utilize to be located at and be leaned on than a labyrinth sealing portion 66 The labyrinth sealing portion 66 of the position of inner side enters to suppress foreign matter.Therefore, work-supporting means 30 can suppress more different The entrance of thing.

Oil sealing 68 positioned at the position than labyrinth sealing portion 66 in the inner part can suppress foreign matter more well and enter shell In body 61.In the case of the platform 40 of work-supporting means 30 is not rotating, oil sealing 68, which is located at than the face formed with protuberance 69a, is The upper surface 65a of upper plate 65 leans on the position of 50 side of turntable, therefore, it is possible to suppress lip 68a and lip 68b and abnormal contact. Therefore, work-supporting means 30 can suppress the aging of oil sealing 68.Lathe can utilize main tapping 25 to work-supporting means 30 The workpiece supported carries out machining etc..

It will be appreciated that all the elements in presently disclosed embodiment are to illustrate, it is not restrictive.This practicality New scope not only includes above-mentioned content, further includes the content shown in claims, i.e., is equal with claims Content and what is carried out in the range of claims had altered.That is, the technical scope of the utility model further include by The embodiment that suitably the obtained technological means of make a change combines in scope shown in claim.

Claims (4)

1. a kind of work-supporting means, which has：Rotation axis；Host body, it can be with this with the rotation axis Host body coaxially carries out rotating mode and houses the rotation axis, which is tubular；Turntable, it is with bearing-surface and phase Opposite, the bearing-surface be used for support workpiece, the opposite face and the one end of the rotation axis are connected, and with the host body One end face is opposite；And labyrinth sealing portion, its between the host body and turntable,

The work-supporting means is characterized in that,

The labyrinth sealing portion has：

Raised line, it is protruded from one end face of the host body towards the opposite face of the turntable, which is in With the annular shape of the rotating shaft coaxle；And

Slot, it is located at the opposite face of the turntable, the raised line can be inserted into the slot, which is circle,

The part opposite with the outer circumferential surface of the outer circumferential surface of the raised line towards the slot tilts.

2. work-supporting means according to claim 1, it is characterised in that

The work-supporting means has multiple labyrinth sealing portions.

3. work-supporting means according to claim 1 or 2, it is characterised in that

The work-supporting means has：

Protuberance, it is in annular shape with the rotating shaft coaxle, and the protuberance is from one end face of the host body The opposite face than the raised line the being partially toward in the inner part turntable protrudes；And

Sealing ring, it gets up closure between the opposite face and protuberance.

4. a kind of lathe, which is characterized in that,

The lathe has：Work-supporting means according to any one of claims 1 to 3；And processing main shaft device, it is used for The workpiece supported to the work-supporting means is processed.