CN101568403A - Main spindle device, composite processing machine with the main spindle device, and method of assembling main spindle device - Google Patents
Main spindle device, composite processing machine with the main spindle device, and method of assembling main spindle device Download PDFInfo
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- CN101568403A CN101568403A CNA2007800482712A CN200780048271A CN101568403A CN 101568403 A CN101568403 A CN 101568403A CN A2007800482712 A CNA2007800482712 A CN A2007800482712A CN 200780048271 A CN200780048271 A CN 200780048271A CN 101568403 A CN101568403 A CN 101568403A
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Abstract
A main spindle device (20) has a bracket (21) swingably installed on a support arm (9) and provided with a tube section (22) substantially vertical to the swing shaft, and the main spindle device (20) also has a main spindle (30) having a rotation section (31) allowing a tool to be attached to its forward end, a housing (32) removably inserted in the tube section (22) of the bracket (23) and having an installation section (35a) facing a face of the bracket (21), and bearings (50, 51) placed between the rotation section (31) and the housing and rotatably supporting the rotation section (31) relative to the housing (32). Flow path openings (80-86) for fluid supplied to the main spindle (30) are formed in the installation surface (35a) of the housing (32).
Description
Technical field
The present invention relates to a kind of main shaft device, comprise the machining center of this main shaft device and the method that is used to assemble this main shaft device.More particularly, the present invention relates on a kind of main tapping that is installed in gantry machining center main shaft device, comprise the machining center of this main shaft device and the method that is used to assemble this main shaft device.
Background technology
Conventionally, thereby as the machining center of realizing with relative to each other mobile large-scale workpiece of three dimensional constitution and cutter such as the process operation of cutting operation and drilling operation, for example, use not only in complex way motion workpiece workbench mounted thereto point-blank, but also in X-axis, Y-axis and Z-direction control comprise the gantry machining center (portal machiningcenter) of the main shaft of cutter.
In gantry machining center, slide is installed on the cross rail by two upright supports, main tapping is installed in can be on the end of the ram that the Z axle moves with respect to slide, and, the internal motor main shaft is installed in swingably by support on two support arms of main tapping (to be seen, for example, patent documentation 1).
And, in the main shaft device in being included in machine tool, the swivel joint that is used for the fluid such as cooling agent is supplied to cutter is arranged in the main shaft, and fluid supplies on this swivel joint from the fluid supply appts that is arranged on the main shaft device outside by pipeline and (sees, for example, patent documentation 2)
Patent documentation 1: the open NO.WO96/41695 (Fig. 4) of international monopoly
Patent documentation 2: Japanese patent unexamined is looked into open JP-A-2001-287102 (Fig. 4)
Summary of the invention
The problem to be solved in the present invention
Here, the disclosed main shaft that is used for machining center in patent documentation 1 uses the fluid such as cutting fluid, lubricant, cooling agent, Compressed Gas and hydraulic operation oil, thereby need be used for supplying with or discharging the runner of these fluids respectively.Traditionally, these runners are configured to respectively be connected respectively on the main shaft by pipeline.Therefore, in the maintenance of main shaft, when to support the time, dismantling and assemble then a lot of pipelines from support dismounting main shaft or with spindle mounted, this causes safeguarding that the time of main shaft is longer.During safeguarding,, cause productivity ratio to reduce owing to must stop machine and increase downtime.
And, in the machining center of patent documentation 1, cutter main shaft mounted thereto by directly fastening and by bolting to support, so that together swing with support.For example, when and when replacing main shaft for the maintenance of each building block of carrying out this main shaft, if generation error aspect the size of the building block of main shaft, so before replacing main shaft with afterwards between the pendulum radius of cutter produce difference, thereby the probability that the machining accuracy of increase cutter may reduce.And, in order strictly to control the pendulum radius of cutter, also must strictly control the dimensional tolerance of each building block of the main shaft that cutter is installed on it, this causes increasing the manufacturing cost of product.
And, in lathe, there be not to find disclosing such as the wiring of the power line of the motor that is used for drive shaft and holding wire according to patent documentation 1.The main shaft of lathe uses under the environment that normally is exposed to cooling agent, and therefore for these wirings being arranged into the main tapping side from main shaft, must consider the water resistance of these wirings.
And, when the main shaft device with patent documentation 2 is applied to above-mentioned machining center, must in support, be provided for settling the space of pipe, these pipes are used to supply fluid to swivel joint; Yet this causes increasing the size of main shaft device.Equally, in this case, in the maintenance of main shaft,, cause increasing the time that is used to safeguard when from support dismounting main shaft or when pipe be dismantled or be assembled to spindle mounted to support the time, must.During safeguarding,, increased downtime thereby caused the productivity ratio of this main shaft to reduce owing to must stop machine.
Proposing the present invention is intended to address the above problem.Specifically, first purpose of the present invention provides a kind of main shaft device and machining center, and it can replace this main shaft in a short period of time, can reduce the downtime that is used to safeguard and high production rate can be provided.Second purpose of the present invention provides a kind of dimensional tolerance that need not strict control and regulate each building block of main shaft, can and can provide the main shaft device of high manufacturing accuracy with the low cost manufacturing; The machining center that comprises this main shaft device; And the method that is used to assemble this main shaft device.The 3rd purpose of the present invention provides a kind of main shaft device and machining center, and it can be provided with the swivel joint with cramped construction, downtime of the weak point that can be provided for safeguarding and high production rate can be provided.The 4th purpose of the present invention provides a kind of main shaft device and machining center of the water resistance that can guarantee to connect up.
The method of dealing with problems
Above-mentioned purpose of the present invention can realize by following structure.
(1) a kind of main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft comprises
Rotating part, its can be on its fore-end mounting cutter;
Housing, it is installed on the tubular portion of this support, so that be suitable for being inserted in the tubular portion of this support and from the tubular portion dismounting of this support, this housing has the surperficial relative installation surface with support; And
Bearing, it is arranged between this rotating part and the housing, and rotatably supports this rotating part with respect to housing,
Wherein, the runner opening that is used to be fed into the fluid of main shaft is arranged on the installation surface of housing.
(2) a kind of main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm;
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of this support, so that can be inserted in the tubular portion of this support and can be from the tubular portion dismounting of this support; And
Bearing, it is arranged between this rotating part and the housing, and rotatably supports this rotating part with respect to housing; And
Packing ring, it can absorb the error of the pendulum radius of cutter.
(3) main shaft device that proposes as aspect (2), its middle washer are inserted between the installation surface of the front end face of this support and flange portion, and this flange portion is arranged on the housing so that relative with the front end face of support.
(4) a kind of main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm;
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of this support, so that can be inserted in the tubular portion of this support and can be from the tubular portion dismounting of this support;
Bearing, it is arranged between this rotating part and the housing, and rotatably supports this rotating part with respect to housing; And
Swivel joint, it is installed on the rear portion of this housing, and supplies fluid to the rotating part of main shaft,
Wherein, this swivel joint comprises flange portion,
This flange portion is relative with the rear portion end face of this housing, and
The runner opening that is used to be fed into the fluid of swivel joint is arranged on this flange portion.
(5) a kind of main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft, it is installed on the tubular portion of this support, so that can be inserted in the tubular portion of this support and can be from the tubular portion dismounting of this support,
Wherein, cutter be suitable for being installed in main shaft one distolateral on, and wiring is arranged on that another of main shaft is distolateral to be gone up and from its extension, and
This support comprises:
Rack body, it has tubular portion; And
The tubular cover parts, it is installed on the rear end face of this rack body and on the outer surface of this main shaft, the wiring that this cover will extend is contained in wherein.
(6) as aspect the main shaft device that proposes in (5), wherein
Seal is separately positioned between the front end face of the rear end face of this rack body and this cover; And between the interior perimeter surface of the outer surface of this main shaft and this cover.
(7) a kind of machining center comprises the main shaft device that proposes as among aspect (1) in (6) any one.
(8) a kind of method that is used to assemble main shaft device, this main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of this support, so that can be inserted in the tubular portion of this support and can be from the tubular portion dismounting of this support; And
Bearing, it is arranged between this rotating part and the housing, and rotatably supports this rotating part with respect to housing,
The assembly method of this main shaft device comprises the following steps:
Measure the pendulum radius of cutter;
Packing ring is provided, and it can be absorbed in poor between the pendulum radius of the pendulum radius of this measurement and hope; And
Be fixed on the support by the housing of described packing ring this main shaft.
Effect of the present invention
According to the present invention, be to make the runner opening of the fluid that is used to be fed into main shaft be formed on the installation surface with the surperficial relative housing of support with the casing structure that is removably mounted on the tubular portion of support.Therefore, when main shaft when support is dismantled, the runner that fluid is used is simultaneously separated, thus main shaft can be in a short period of time from the support dismounting, and need not to decompose pipeline.And, since when spindle mounted to support the time fluid course connected simultaneously, similar with operation splitting, need not to assemble pipeline just can be in a short period of time with spindle mounted to support.In addition, if runner is with the discharge passage that acts on fluid, owing to except the surface is installed, do not have opening to be formed on the main shaft side, so can prevent entering of impurity definitely.
According to the present invention, because the housing of main shaft is fixed on the support by packing ring, so the error of cutter oscillation radius aspect can be absorbed by this packing ring.The dimensional tolerance that this does not need strict control and adjusts each building block of main shaft.Therefore, can make this main shaft device with low cost, and can improve the machining accuracy of this main shaft device.
According to the present invention, comprise flange portion owing to be used to supply fluid to the swivel joint of rotating part, the rear portion end face of this flange portion and housing is relative and be formed with the runner opening of the fluid that is used to be fed into swivel joint thereon, so do not having to supply fluid to swivel joint under the situation of pipeline, eliminated the needs in the space that in support, is provided for pipeline, thereby can make this main shaft device with compact structure.And; because when swivel joint is assembled to housing; the runner that is used to be fed into the fluid of this swivel joint is connected simultaneously; so when main shaft from support dismounting or when being assembled to support; do not need to decompose or the assembling pipeline; thereby the maintenance that can reduce main shaft device needed downtime, and can improve its production efficiency.
According to the present invention, owing to be contained in the tubular cover parts from the wiring of another distolateral extension of main shaft, these tubular cover parts are installed on the rear end face of rack body and on the rear end part outer surface of main body, wiring can be arranged on the support arm side and need not to be exposed to the outside, so can guarantee the water resistance that connects up.And,, thereby can utilize compact structure to produce main shaft device so this cover is arranged to need not extend in the axial direction whole main shaft device because this cover is installed on the rear end part outer surface of main shaft.
And, because respectively between the front end face of the rear end face of rack body and cover, and between the interior perimeter surface of the rear end part outer surface of main shaft and cover, seal is set respectively, so can further strengthens the water resistance of wiring.
Description of drawings
Fig. 1 is the schematic diagram of application according to the gantry machining center of the main shaft device of first embodiment of the invention;
Fig. 2 is the perspective view of the major part of main tapping shown in Figure 1;
Fig. 3 is the front view of main tapping;
Fig. 4 is the decomposition diagram of main shaft device;
Fig. 5 is the cutaway view of main shaft device;
Fig. 6 is the partial sectional view along the main shaft device of VI-VI line intercepting shown in Figure 7;
Fig. 7 is when when arrow VII shown in Figure 5 observes, the rearview of the main shaft of pulling down from support;
Fig. 8 is the decomposition diagram according to the main shaft device of second embodiment of the invention;
Fig. 9 is the cutaway view of main shaft device shown in Figure 8;
Figure 10 is the decomposition diagram according to the main shaft device of third embodiment of the invention;
Figure 11 is the cutaway view of the amplification of swivel joint shown in Figure 10;
Figure 12 is the front view according to the main tapping of fourth embodiment of the invention;
Figure 13 is the decomposition diagram of main shaft device; And
Figure 14 is the cutaway view of main shaft device.
Reference numeral
1: gantry machining center (machining center)
20: main shaft device
21: support
22: tubular portion
23: rack body
The 23c front end face
24: dull and stereotyped lid
25: bonnet
27: packing ring
30: main shaft
31: rotating part
32: housing
35: middle casing
35b: the surface is installed
39: exterior tube
40: preceding side body
50: the front side bearing
51: the back side bearing
70: swivel joint
71: joint shell
71a: flange portion
71b: runner opening
72: bearing
73: the rotating pipe axle
75: float plate
76: hermetic unit
80: the entrance side runner opening that is used for the cooling fluid that bearing and motor use;
81: the runner opening that is used for the hydraulic oil that clamping piston uses
82: the runner that is used for the fluid cooling fluid
83: the runner that is used for the taper air blast
84: the runner that is used for airtight air
85: the runner opening that is used to unclamp the hydraulic oil that piston uses
86: the outlet side runner opening that is used for the cooling fluid that bearing and motor use
97: power line (wiring)
98: holding wire (wiring)
110,111:O shape ring
120: cover
The specific embodiment
(first embodiment)
Now, provide respectively below with reference to the accompanying drawings according to the main shaft device of the first embodiment of the present invention with as the detailed description of the gantry machining center of machining center.
As shown in Figure 1, in gantry machining center 1, workbench 3 is supported on the lathe bed 2, so that can move in X-direction, and erects a column 4 on the both sides of lathe bed 2.On the upper end of column 4, be provided with cross rail 5, and this cross rail 5 is provided with slide 6 so that can move in Y direction.And, on slide 6, be supported with the ram 7 that can move up and down in Z-direction.In the lower end of ram 7, the main tapping 8 that is used to keep according to main shaft device 20 of the present invention is installed, make that this main tapping 8 can drive shaft device 20, just, it can and make this main shaft device 20 dislocations (index) around Y-axis and the rotation of Z axle.
Shown in Fig. 2 and 3, main tapping 8 comprises pair of support arms 9, and it is set to the support 21 of main shaft device 20 is remained between them.In the inside of support arm 9, accommodate a pair of swinging axle 10, it is respectively fixed on two side surfaces of support 21 so that by a plurality of bearings 11 rotations.And motor 12 is arranged in the swinging axle 10, thereby main shaft device 20 can be installed to this on the support arm 9, so that swing around Y-axis (swinging axle A).Here, the oscillating motion of main shaft device 20 can not be to be driven by the motor (motor) 12 that is provided with around swinging axle 10, and also can be by using gear to drive.
Shown in Figure 4 and 5, the support 21 of main shaft device 20 comprises: rack body 23, it has in Y direction and is respectively fixed to swinging axle 10 on two side table, and is included in X-axis line direction (it is the direction that is approximately perpendicular to axis of oscillation) and passes its tubular portion 22; And can be fixed to bonnet 25 on the rear end face of rack body 23 by bolt 26.The housing 32 of main shaft 30 is installed on the tubular portion 22 of rack body 23, also can dismantle from it so that can be inserted into wherein.Here, in Fig. 4, Reference numeral 23a represents that swinging axle 10 can be installed in bolt hole [MS1] wherein.
As shown in Figure 5, the main shaft 30 of internal motor comprise on its front end can mounting cutter W rotating part 31, can be installed on the tubular portion 22 of rack body 23 so that can be inserted into wherein and from the housing 32 of its dismounting, and be separately positioned on rotating part 31 and be used to support between the housing 32 of this rotating part 31 so that rotating part 31 can be with respect to the front side and the back side bearing 50,51 of housing 32 rotations.
In rotating part 31, be provided with: the rotatable rotary axle 44 that comprises rotor 43; Be installed in the rotating shaft 44 so that make it can be axially with respect to the pull bar 45 of rotating shaft 44 motions; And spring 48, it is installed in the outside of pull bar 45 so that this pull bar 45 can inwardly spur the collet segment 47 that is used for fixing cutter holder 46 at axial direction, and this spring 48 is between the large-diameter portion that is axially disposed within rotating shaft 44 and pull bar 45 is divided, so that be compressed.Here, use the dish spring as spring 48; Yet, also can use helical spring, spiral dish spring etc.
Each front side bearing 50 is formed by the angular contact ball bearing of combination, and wherein the outer ring is fixed on the preceding side body 40, and inner ring cooperates with one of rotating shaft 44 distolateral outer surface.And, since lining housing 36 be arranged on another of rotating shaft 44 distolateral on, so be equipped with bearing insert 49, it can be in the axially-movable of rotating shaft 44.And each back side bearing 51 is formed by a pair of angular contact ball bearing, and wherein the outer ring is fixed on the bearing insert 49, and inner ring cooperates with another distolateral outer surface of rotating shaft 44; And back side bearing 52 is cooperated with supporting rotating shaft 44 with front side bearing 50, so that can rotate.
On the rear end side of pull bar 45, be provided with the piston contact portion 63 that can be compressed by piston pressing section 62, this piston pressing section 62 is installed in the piston 61 of the piston mechanism 60 that is used to change cutter.Operation about piston mechanism 60, when the pressure medium such as oil, water or air is introduced in its advance side pressure introducing part 64, piston 61 moves along direction of advance, the piston pressing section 62 of piston 61 is close to piston contact portion 63, also to move described pull bar 45 in axial compression.Therefore pull bar 45 is released cutter W, (sees the position on the top of Fig. 5) thereby cutter turned in its released position.On the other hand, the pressure of introducing part 64 when the lateral pressure of advancing is released and pressure medium when being introduced into returning lateral pressure and introducing part 65 of piston mechanism 60, piston 61 moves or returns, axially returning pull bar 45, thereby cutter is turned to its clamped position (seeing the position of the bottom of Fig. 5).
On bonnet 38, be fixed with the piston 61 that is used to detect piston mechanism 60 the position position-detection sensor 66 and be used to check the cutter detecting sensor 67 that whether has cutter.In the inside of back side body 37, be provided with the encoder 68 of the rotary speed that is used to detect rotating shaft 44.
And the runner opening relative with the front end face of rack body 23 is formed on the installation surface 35b of middle casing 35.All fluids that supply to main shaft 30 are all supplied with or discharging from being formed on the runner opening of installing the surperficial 35b.As shown in Figure 7, in the 35b of the installation surface of flange portion 35, be formed with the entrance side runner opening 80 that the cold oil that is used for cooling bearing and motor is used respectively, be used for the runner opening 81 that the pressure oil of clamping piston 61 is used, be used to spray the runner opening 82 of cooling fluid, the runner opening 83 that is used for the taper air blast, the runner opening 84 that is used for airtight air, be used to unclamp the runner opening 85 that the hydraulic oil of piston 61 is used, and be used for the outlet side runner opening 86 that the cold oil of cooling bearing and motor is used.Here, the Reference numeral 32b shown in Fig. 7 represents bolt hole (in the present embodiment, six bolts hole), and it is respectively formed among the flange portion 35a of middle casing 35 and bolt 96 can insert wherein.
For example, as shown in Figure 5, the runner 94 of the pressure oil that will unclamp on being formed on bracket side is incorporated into the runner opening 85 the installation surface 35b that is formed on middle casing 35, and further guided by the runner 87 that is respectively formed in middle casing 35, lining housing 36 and the back side body 37, supply to then and return side introducing part 65.And as shown in Figure 6, the cold oil that is used for bearing and motor also is incorporated into the runner opening 80 of the installation surface 35b that is formed on middle casing 35 from bracket side runner 94.Then, the runner 88 that extends from runner opening 80 diverges middle casing 35.The part cold oil is fed into cooling tube 90 by the runner that extends later 89 to middle casing 35; And the remainder cold oil is fed into cooling segment 93 by the runner 92 in the side body 40 before being formed on.Here, all the other fluids also by be respectively formed in the housing separately they corresponding runner and supply to their desired position from middle housing 35, perhaps, they by be respectively formed in the housing separately they corresponding runner and be discharged to bracket side from middle housing 35.
On the other hand, the runner on bracket side 94 that is used for corresponding fluids is formed on rack body 23, and allow intercommunicated between opening 94a and opening 94b, opening 94a is respectively formed in the front end face of rack body 23, and opening 94b is respectively formed among the installation surface 23b relative with the flange 10a (see figure 3) of swinging axle 10.Be communicated with runner (not shown) among the flange 10a that is formed on swinging axle 10 at the runner 94 of the installation of rack body 23 surface 23b split shed, and need not pipeline.Therefore, by rack body 23 and middle casing 35, the feasible runner that is fed into the fluid of main shaft 30 can communicate with each other from the desired locations of swinging axle side up to main shaft 30.And when swinging axle 10 decomposed with rack body 23, when perhaps rack body 23 decomposed with middle casing 35, meanwhile, the fluid course between each building block can be separated from one another.And when swinging axle 10 and rack body 23 were put together, perhaps when rack body 23 and middle casing 35 were put together, meanwhile, the fluid course between each building block can be assembled.Here, in the periphery of each the runner opening between the apparent surface of these parts, be respectively arranged with O shape ring, thereby prevent that the runner opening of fluid from be formed on this apparent surface from leaking.
Therefore, main shaft device 20 according to present embodiment, because middle casing 35 is configured such that the runner opening 80 to 86 of the fluid that is used to be fed into main shaft 30 is respectively formed at the installation surface 35b relative with the front end face of rack body 23, when main shaft 30 when support 21 is pulled down, meanwhile, the runner that is used for fluid can be separated, the tubular portion 22 of rack body 23 is installed, so that can be inserted into this tubular portion 22 and can be on this middle casing 35 from 22 dismountings of this tubular portion.Therefore, can in a short period of time main shaft 30 be pulled down from support 21, and need not to decompose pipeline.And, be connected in can be when main shaft 30 is assembled to support 21 owing to be used for the runner of fluid, similar with operation splitting, need not to assemble pipeline and just main shaft 30 can be assembled on the support 21 in a short period of time.In addition, if this runner is used as the discharge passage that fluid is used, owing to except the surface is installed, there is not opening to be formed on the main shaft side, so can prevent entering of impurity etc. definitely.
(second embodiment)
Next, below with reference to Fig. 8 and Fig. 9 provide according to a second embodiment of the present invention main shaft device and as the detailed description of the gantry machining center of machining center.Therefore here, the parts identical with first embodiment are given identical mark, in this omission or simplify its description.
As Fig. 8 and shown in Figure 9, according to present embodiment, exterior tube 39 is fixed on the support 21, so that the flange portion 35a of middle casing 35 passes the front end face 23c that packing ring 27 is fastened to rack body 23 by using bolt.Therefore, by pulling down bolt 96, main shaft 30 can be towards front from support 21 be pulled out.
Because the axial line distance L1 of 23 front end face 23c is constant from axis of oscillation A to rack body, therefore be set at constant the time when summation, the swing size of cutter W can be set at the swing size of hope the axial dimension L3 of the axial dimension L2 of packing ring 27 and main shaft side.
Axial distance L3 between the 35b of the installation surface of the front end face 44a of rotating shaft 44 and flange portion 35a measures such as the measurement mechanism of dial ga(u)ge by using, and then based on this axial dimension L3, suitably determines the axial dimension L2 in space 27.Here, front end face 44a is equipped with the cutter holder 46 that is used for mounting cutter W as datum level on it.
Therefore, for example, when replacing main shaft 30 with respect to support 21 when, although the axial dimension L3 on the main shaft side changes, but by the packing ring 27 of the axial dimension L2 with hope is provided, the error between the pendulum radius of the variation of size L3 and hope can be absorbed by packing ring 27.Therefore,, can prevent that also the pendulum radius of cutter from changing, therefore, can keep the fabulous machining accuracy of cutter even when main shaft 30 is replaced.
And, similar with first embodiment, in the 35b of the installation surface of the flange portion 35a of the middle casing 35 relative, form the runner opening with the front end face 23c of rack body 23.All fluids that are fed into main shaft 30 are all installed these runner openings the surperficial 35b and are supplied with or discharge from being formed on.Therefore, the pressure oil that unclamps is incorporated into runner opening 85 the installation surface 35b that is formed on middle casing 35 by the penetration channel 27a that is formed in the packing ring 27 from the runner on bracket side 94, and can further be guided by the runner 87 that is respectively formed in middle casing 35, lining housing 36, back side body 37 and the bonnet 38, and finally supply to and return lateral pressure and introduce part 65.
Therefore, main shaft device 20 according to present embodiment, because the housing 32 of main shaft 30 is fixed on the support 21 by packing ring 27, the error of the pendulum radius R of cutter W can absorb by this packing ring 27, do not need strictly to control or adjust the dimensional tolerance of each building block of main shaft 30, and can remain on high level with the machining accuracy that low cost is made main shaft 30 and cutter W.
Particularly, because packing ring 27 is arranged between the installation surface 35b of flange portion 35a of the front end face 23c of rack body 23 and the middle casing 35 relative with this front end face 23c, therefore when being fixed to main shaft 30 on the support 21, can adjust the pendulum radius R of cutter W together, and be convenient to the adjustment operation of the pendulum radius of cutter.
The structure of other structures of present embodiment and the operation and first embodiment and class of operation are seemingly.
(the 3rd embodiment)
Next, provide the main shaft device of a third embodiment in accordance with the invention below with reference to Figure 10 and Figure 11 and as the detailed description of the gantry machining center of machining center.Therefore here, the part identical with first embodiment given identical mark, in this omission or simplify its description.
As shown in Figure 10 and Figure 11, according to present embodiment,, be provided with the swivel joint 70 that is used for cooling agent is supplied to the pull bar 45 of rotating part 31 at the rear portion of bonnet 38.As shown in figure 11, this swivel joint 70 comprises joint shell 71, and it has the flange portion 71a that will be mounted so that relative with the rear end face of bonnet 38; Via the rotating pipe axle 73 of two bearings, 72 settings, so that can rotate with respect to joint shell 71; Be installed in the float plate 75 on the connector cover 74, this connector cover 74 is fixed on the joint shell 71 so that relative with the rear end of rotating pipe axle 73; And hermetic unit 76, its have on the rear end part that is respectively installed to rotating pipe axle 73 and the fore-end of float plate 75 on sealing ring.
The extension 45b at the rear portion of the pull bar 45 that extends from the rear end of rotating shaft 44 is connected to (see figure 10) on the rotating pipe axle 73, and this rotating pipe axle 73 is with rotating shaft 74 rotations.And through hole 73a is formed on the inside of rotating pipe axle 73, and this through hole 73a is communicated with through hole (not shown) among the extension 45b that is formed on pull bar 45, thereby constitutes the rotation side runner.
In addition, the through hole 75 that is communicated with bore portion 74a in being formed on connector cover 74 is formed on the inside of float plate 75, and forms the fixation side runner.Then, make the through hole 73a of rotating pipe axle 73 be communicated with, and rotation side runner and fixation side runner link together with the through hole 75a of float plate 75.
Still in the present embodiment, similar with first embodiment, the pressure oil of clamping, the pressure oil that unclamps, cooling wet goods are fed into main shaft 30.Yet, as shown in figure 10, by the runner opening 71b among the flange portion 71a that is formed on joint shell 71, pass through the corresponding runner 77 that the taper air blast that is respectively formed at the runner 87 ' in middle casing 35, lining housing 36, back side body 37 and the bonnet 38 is fed into joint shell 71 and connector cover 74, the flange portion 71a of described joint shell 71 is installed on the rear end face of bonnet 38.And, in float plate 75 because supply pressure and by under the situation about compressing towards the downstream, hermetic unit 76 closely contacts with this float plate 75, thereby the taper air blast can be incorporated into the rotation side runner from the fixation side runner, and can supply to rotating part 31 subsequently.
Therefore, main shaft device 20 according to present embodiment, comprise joint shell 71 owing to be used to supply fluid to the swivel joint 70 of rotating part 31, and flange portion 71a is relative with the rear end face of bonnet 38, and the runner opening that is used to be fed into the fluid of swivel joint is formed on flange portion 71a, so can supply fluid to swivel joint 70 under the situation of not using any pipeline.Therefore, need in support, not be provided for the space that pipeline is used, thereby can produce main shaft device 20 by enough compact structures.
In addition, when being assembled to swivel joint 70 on the bonnet 38, meanwhile, the runner that is used to be fed into the fluid of swivel joint 70 is connected to each other.Therefore, when from support 21 assembling or dismounting main shaft 30 time, there is no need assembling or dismounting pipeline.Therefore, can shorten the downtime when safeguarding, and can boost productivity.
Other structures of present embodiment and operation are similar with first embodiment.
(the 4th embodiment)
Next, provide the main shaft device of a fourth embodiment in accordance with the invention below with reference to Figure 12-14 and as the detailed description of the gantry machining center of machining center.Therefore here, the parts identical with first embodiment are given identical mark, in this omission or simplify its description.
As Figure 13 and shown in Figure 14, according to present embodiment, the tubular cover parts 120 that the rear end face 23d that is fixed to rack body 23 is provided are as bonnet.This cover 120 comprises tubular portion 120d; And 120a is divided in the bottom that has the hole at the rear end side place.In this cover 120, the bottom divides the rear end part outer surface of the interior perimeter surface 120b of 120a and main shaft 30 to fit on, and this main shaft 30 is installed on the rack body 23 and from rear end face 23d and stretches out.And, make front end face 120c relative, and cover 120 is fixed on the rack body 23 with bolt 26 four corners with the rear end face 23d of rack body 23.Here, similar with the foregoing description in Figure 14, can be with the internal motor main shaft known as main shaft 30.
The rear end part of housing 32 formed have minor diameter, this rear end part is that another of main shaft 30 is distolateral.The holding wire 98 (wiring) that is used for the power line 97 (wiring) and being used to that power supply is sent to the stator of motor is arranged on the sensor of main shaft 30 extends back from the rear end part of housing 32, prevents that therefore them from disturbing mutually with the tubular portion 22 of rack body 23.Here, still in the present embodiment, as sensor, be provided for detecting the rotary speed of rotating shaft 31 encoder 68, be used to detect clamping piston the position position-detection sensor 66 and be used to check cutter detecting sensor 67 (see figure 5)s that whether have cutter.
The power line 97 that guides to the cover 120 from housing 32 is arranged in first space S 1 that is formed in the rack body 23.On the other hand, each holding wire 98 in cover 120 is arranged in second space S 2, and this second space S 2 is formed on respect to the central axis B of the tubular portion 22 of rack body 23 and the roughly symmetrical position of first space S 1.
It is that the O shape ring 110,111 of seal is separately positioned between the front end face 120c of the rear end face 23d of rack body 23 and cover 120 and between the interior perimeter surface 120b of the bottom 120a of the rear end part outer surface of the housing 32 of main shaft 30 and cover 120.This O shape ring 110,111 matches with rack body 23 and housing 32, with the inside from outside seal cover 120.Therefore, each space S 1 and the wiring 97 the S2 and 98 that is incorporated into rack body 23 from the housing 32 of main shaft 30 can seal by enough covers 120 definitely.
First and second space S 1 and S2 form in shape roughly the same each other.Shown in Figure 13 and 14, groove part 100 and 100 ', perforate 101 and 101 ' and inclined hole 102 and 102 ' be formed in the rack body 23.Groove part 100 and 100 ' is respectively formed on two side surfaces, these two side surfaces and the swinging axle A of rack body 23 and the central axis B vertical (in Z-direction) of tubular portion 22.Perforate 101 and 101 ' is passed groove part 100 and 100 ' from the rear end face of rack body 23 respectively.Inclined hole 102 and 102 ' is respectively installed surface opening from the basal surface of groove part 100 and 100 ' to what swinging axle 10 can be installed thereon respectively.Inclined hole 102 and 102 ' is opening partly on the interior perimeter surface of tubular portion 22 also.And, in the periphery of groove part 100 and 100 ', be formed with O shape ring (not shown) cannelure 103 mounted thereto.When pair of plates lid 24 was fixed on the rack body 23, groove part 100 and 100 ' side surface opening were sealed.
And power line 97 and holding wire 98 are arranged in first and second space S 1 and S2 of such formation; Introduce from their corresponding installation surface; Relevant periphery 10a from them takes out respectively, and this periphery 10a is respectively formed on a pair of swinging axle 10; And be introduced in main tapping side (seeing Figure 12).As shown in figure 13, power line 97 and holding wire 98 are connected in the intermediate portion by joint component 104 and 104 ' respectively, and this joint component 104 and 104 ' is for example for clamping terminal or having a pair of being used for from the connector of the coupling part that can move dismounting ground splicing ear each other.Blank area 104 and 104 ' is arranged on, when wiring 97 and 98 when the outer surfaces of housing 32 extend, with the position apart from certain distance, this extension of wiring 97 and 98, this blank area 104 and 104 ' is contained in respectively in the groove part 100 simultaneously.Here, joint component 104 and 104 ' also can be contained in the cover 120.And, joint component 104 and 104 ' shown in Figure 14 comprises male connector 104a and 104a ' and female connector 104b and 104b ' respectively, this male connector 104a and 104a ' are respectively formed at this on this wiring side of main shaft 30 extensions, and this female connector 104b and 104b ' are separately positioned on this in this wiring that exists on the main tapping side.
And O shape ring 110,111 is separately positioned between the front end face 120c of the rear end face 23d of rack body 23 and cover 120 and between the interior perimeter surface 120b of the bottom 120a of the rear end part outer surface of main shaft 30 and cover 120.Therefore, can improve the water resistance of wiring 97 and 98.
Other structures of present embodiment and operation are similar with first embodiment.
At this, the present invention is not limited to the various embodiments described above, and suitable modification, suitable improvement etc. also is possible.
According to the foregoing description, main shaft 20 is supported swingably by the pair of support arms 9 of main tapping 8.Yet this main shaft device 20 also can be configured to make it by single support arm cantilever support.
And first and second space S 1 and the S2 that are formed in the rack body 23 according to fourth embodiment of the invention also can change into arbitrary shape, as long as it can realize purpose of the present invention.
And in the 4th embodiment, the bottom of cover 120 divides the rear end part outer surface of housing 32 of the interior perimeter surface 120b of 120a and main shaft 30 to fit on.Yet this inner surface 120b can extend from the rear end face 23d of rack body 23, and can be at the axial location that can hold wiring 97 and 98 and this outer surface to fit on.That is to say that this main shaft 30 can also stretch out to the back of cover 120.
In addition, still in the 4th embodiment, supply to main shaft or the fluid such as cooling agent and cold oil of discharging from main shaft is supplied to by the runner the housing 32 that is respectively formed at rack body 23 and main shaft 30.Yet when this fluid supplied to the housing 32 of main shaft 30 by pipeline from rack body 23, this pipeline can be arranged in the cover 120, thereby also can guarantee the fire resistance characteristic of pipeline.
At this, the present invention is based on the Japanese patent application of submitting on December 27th, 2006 (patent application No.2006-351175), the Japanese patent application (patent application No.2006-351176) that on December 27th, 2006 submitted to, the Japanese patent application (patent application No.2006-351177) that on December 27th, 2006 submitted to and the Japanese patent application of submitting on December 27th, 2006 (patent application No.2006-351178), and its content combination therewith for your guidance.
Claims (8)
1. main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of described support, so that be suitable for being inserted in the tubular portion of this support and dismantle from the tubular portion of this support, this housing has the surperficial relative installation surface with described support; And
Bearing, it is inserted between described rotating part and the described housing, and rotatably supports described rotating part with respect to described housing,
Wherein, the runner opening that is used to be fed into the fluid of described main shaft is arranged on the installation surface of described housing.
2. main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm;
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of described support, so that can be inserted in the tubular portion of described support and can dismantle from the tubular portion of described support; And
Bearing, it is inserted between described rotating part and the described housing, and rotatably supports described rotating part with respect to described housing; And
Packing ring, it can absorb the error of the pendulum radius of cutter.
3. main shaft device according to claim 2, wherein said packing ring are inserted between the installation surface of the front end face of described support and flange portion, and this flange portion is arranged on the described housing so that relative with the front end face of described support.
4. main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm;
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of described support, so that can be inserted in the tubular portion of described support and can dismantle from the tubular portion of described support;
Bearing, it is inserted between described rotating part and the described housing, and rotatably supports described rotating part with respect to described housing; And
Swivel joint, it is installed on the rear portion of described housing, and supplies fluid to the rotating part of described main shaft,
Wherein, described swivel joint comprises flange portion,
Described flange portion is relative with the rear portion end face of described housing, and
The runner opening that is used to be fed into the fluid of swivel joint is arranged on described flange portion.
5. main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft, it is installed on the tubular portion of described support, so that can be inserted in the tubular portion of described support and can be from the tubular portion dismounting of described support,
Wherein, cutter be suitable for being installed in described main shaft one distolateral on, and wiring is arranged on that another of main shaft is distolateral to be gone up and from its extension, and
Described support comprises:
Rack body, it has tubular portion; And
The tubular cover parts, it is installed on the rear end face of described rack body and on the outer surface of described main shaft, the wiring that described cover will extend is contained in wherein.
6. main shaft device as claimed in claim 5, wherein
Seal is separately positioned between the front end face of the rear end face of described rack body and described cover and between the interior perimeter surface of the outer surface of described main shaft and described cover.
7. a machining center comprises as any described main shaft device in the claim 1 to 6.
8. method that is used to assemble main shaft device, this main shaft device comprises:
Support, it is installed on the support arm swingably, and comprises the tubular portion with the axis of oscillation approximate vertical of this support arm; And
Main shaft comprises
Rotating part, it can be installed in cutter on its fore-end;
Housing, it is installed on the tubular portion of described support, so that can be inserted in the tubular portion of described support and can be from the tubular portion dismounting of described support; And
Bearing, it is inserted between described rotating part and the described housing, and rotatably supports described rotating part with respect to described housing,
The assembly method of described main shaft device comprises the steps:
Measure the pendulum radius of described cutter;
Packing ring is provided, and this packing ring can be absorbed in poor between the pendulum radius of the pendulum radius of measurement like this and hope; And
Be fixed on the described support by the housing of described packing ring described main shaft.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP351175/2006 | 2006-12-27 | ||
| JP2006351178A JP5018079B2 (en) | 2006-12-27 | 2006-12-27 | Spindle device and multi-task machine tool provided with the same |
| JP2006351175A JP5309445B2 (en) | 2006-12-27 | 2006-12-27 | Spindle device and multi-task machine tool provided with the same |
| JP2006351176A JP4867650B2 (en) | 2006-12-27 | 2006-12-27 | Spindle device, combined machining machine tool having the same, and method of assembling the spindle device |
| JP2006351177A JP4984881B2 (en) | 2006-12-27 | 2006-12-27 | Spindle device and multi-task machine tool provided with the same |
| JP351176/2006 | 2006-12-27 | ||
| JP351178/2006 | 2006-12-27 | ||
| JP351177/2006 | 2006-12-27 | ||
| PCT/JP2007/071254 WO2008078454A1 (en) | 2006-12-27 | 2007-10-31 | Main spindle device, composite processing machine with the main spindle device, and method of assembling main spindle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101568403A true CN101568403A (en) | 2009-10-28 |
| CN101568403B CN101568403B (en) | 2012-06-20 |
Family
ID=39692103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800482712A Expired - Fee Related CN101568403B (en) | 2006-12-27 | 2007-10-31 | Main spindle device, composite processing machine with the main spindle device, and method of assembling main spindle device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5309445B2 (en) |
| CN (1) | CN101568403B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109843483A (en) * | 2016-10-26 | 2019-06-04 | 三菱重工工作机械株式会社 | Main axle unit and lathe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6725594B2 (en) | 2018-06-28 | 2020-07-22 | ファナック株式会社 | Spindle device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631585A (en) * | 1992-07-21 | 1994-02-08 | Mori Seiki Co Ltd | Cooling structure for main spindle device |
| JP2782324B2 (en) * | 1994-03-29 | 1998-07-30 | オークマ株式会社 | Tightening / loosening detection mechanism for swivel head spindle housing |
| CN2294801Y (en) * | 1997-09-23 | 1998-10-21 | 史景璋 | High-precision high-speed drilling-cutting pneumatic master shaft |
| JP3944365B2 (en) * | 2001-06-22 | 2007-07-11 | 東芝機械株式会社 | Machine tools, tools and tool holders |
| CN2659599Y (en) * | 2003-11-07 | 2004-12-01 | 叶横灿 | Mainshaft of processor |
| JP2006289595A (en) * | 2005-04-14 | 2006-10-26 | Nsk Ltd | Spindle device |
-
2006
- 2006-12-27 JP JP2006351175A patent/JP5309445B2/en not_active Expired - Fee Related
-
2007
- 2007-10-31 CN CN2007800482712A patent/CN101568403B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109843483A (en) * | 2016-10-26 | 2019-06-04 | 三菱重工工作机械株式会社 | Main axle unit and lathe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5309445B2 (en) | 2013-10-09 |
| CN101568403B (en) | 2012-06-20 |
| JP2008161950A (en) | 2008-07-17 |
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