CN106378481B - For the milling head and numerically-controlled machine tool of numerically-controlled machine tool - Google Patents

For the milling head and numerically-controlled machine tool of numerically-controlled machine tool Download PDF

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Publication number
CN106378481B
CN106378481B CN201611123087.7A CN201611123087A CN106378481B CN 106378481 B CN106378481 B CN 106378481B CN 201611123087 A CN201611123087 A CN 201611123087A CN 106378481 B CN106378481 B CN 106378481B
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CN
China
Prior art keywords
milling head
rotation axis
host
numerically
machine tool
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Expired - Fee Related
Application number
CN201611123087.7A
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Chinese (zh)
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CN106378481A (en
Inventor
杨甫
王全宝
彭梁锋
张力
赵建华
朱祥
李绍萍
余颖
武记超
代艳
王菁
蒋维
余光怀
孙志强
李军
马文俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenji Group Kunming Machine Tool Co Ltd
Original Assignee
Shenji Group Kunming Machine Tool Co Ltd
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Application filed by Shenji Group Kunming Machine Tool Co Ltd filed Critical Shenji Group Kunming Machine Tool Co Ltd
Priority to CN201611123087.7A priority Critical patent/CN106378481B/en
Publication of CN106378481A publication Critical patent/CN106378481A/en
Application granted granted Critical
Publication of CN106378481B publication Critical patent/CN106378481B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C9/00Details or accessories so far as specially adapted to milling machines or cutter
    • B23C9/005Details or accessories so far as specially adapted to milling machines or cutter milling heads

Abstract

This application discloses a kind of milling head for numerically-controlled machine tool, including having the connecting seat in the hole entered for the host main shaft;For the extended seat being fixedly connected with the connecting seat end face;The first rotation axis being arranged in the extended seat;The first gear being fixedly installed in first rotation axis;For the body of milling head being fixedly connected with the extended seat;The second rotation axis for being used to that cutter to be driven to rotate being arranged in the body of milling head, first rotation axis and second rotation axis are arranged mutual vertically;And it is fixedly installed on the second gear that in second rotation axis and described first gear is mutually matched.In addition, disclosed herein as well is a kind of numerically-controlled machine tools.Connecting seat and extended seat are designed as Split type structure by the application, and the length that can be so converted according to the size and needs of different hosts or host ram end face separately designs connecting seat and extended seat.So design reduces the complexity coefficient of component, and manufactured connecting seat and extended seat precision are more preferable.

Description

For the milling head and numerically-controlled machine tool of numerically-controlled machine tool
Technical field
The present invention relates to digit ctrol machine tool field, more particularly to a kind of strong milling head of degree of flexibility for numerically-controlled machine tool and adopt With the numerically-controlled machine tool of the milling head.
Background technology
The external shell of existing milling head is an entirety, and an end face of the housing is used for and host ram combines, should The length of housing is the extended length of milling head.Therefore, when the ram change in size of host or the geometrical extension variation of milling head When, be required for replace milling head outer housing.The degree of flexibility of this milling head is poor, and complex contour coefficient height causes to be designed and manufactured as This is higher.
In addition, during installation, milling head needs to play the host ram of sum number control lathe to just using driving, then manual rotation The main shaft of milling head combines the driving key that straight end-face key on host main shaft and milling head are transferred on disk, then manual rotation milling head Main shaft, then milling head is fixed on host ram with screw.During dismounting, milling head is also required to play using driving, and keeps sum number The host ram of lathe is controlled to just, then loosening screw manually again.Therefore, the handling of milling head rely on the technical ability and warp of worker completely Test, complete once handling need 2 it is small when or so, and due to lacking identification safety guard, often due to operation error Damage milling head or positioning, the transmission parts of host ram end face.
Although the pin hole with the detent fit on host ram is provided on existing milling head housing, due to the two Positioning accuracy request it is very high, this requires process equipment precision is very high, in turn result in processing cost raising.Moreover, one As a host can configure multiple milling heads of different size, then the pin hole on each milling head housing will be determined on ram Position pin has very high positioning accuracy, once the position of the two is not inconsistent, it is possible to milling head shell is caused in work of numerical control machine Body is scrapped.
The content of the invention
In view of defect in the prior art, one embodiment of the present invention provides a kind of milling for numerically-controlled machine tool Head, including:
The connecting seat that host or host ram shape of the end face with the numerically-controlled machine tool match, the connection seat tool There is the hole entered for the host main shaft;
For the extended seat being fixedly connected with the connecting seat other end;
Be arranged in the extended seat for the first rotation axis for being fixedly connected with the main shaft of the host;
The first gear being fixedly installed in first rotation axis;
For the body of milling head being fixedly connected with the extended seat, first rotation axis can enter the body of milling head;
Be arranged in the body of milling head for driving the second rotation axis that cutter rotates, first rotation axis and described Second rotation axis is arranged mutual vertically;And
The second gear being fixedly installed in second rotation axis, the second gear and mutual of the first gear Match somebody with somebody, so that the power of the host main shaft can be conducted via first rotation axis to the second rotation axis.
In embodiments of the present invention, connecting seat and extended seat are designed as Split type structure, it so can be according to difference Host or host ram end face the length that converts of size and needs, separately design connecting seat and extended seat.So design So that the quantity of manufacture mold is reduced, the complexity coefficient of component reduces, therefore manufactured connecting seat and extended seat precision are more preferable, Cost is lower.
In an embodiment of the invention, the milling head for numerically-controlled machine tool can also include regularly being arranged Drive plate in first rotation axis, has on the end face of the drive plate and the main shaft straight end-face key of the host is matched Keyway is additionally provided with locating slot on the drive plate;And quasi- stop device, including:It is fixedly arranged at the upper of the extended seat Housing;It is fixedly arranged in vivo first elastic element of the shell;Be arranged at the shell it is in vivo and with first bullet Property element associated telescopic element, the telescopic element have extend towards the host or the host ram direction it is described First bar of housing and the second bar for extending the housing towards the drive plate radial direction;The first elastic element tool There are relaxed state and impaction state:When first elastic element is in relaxed state, second bar is in the transmission In the locating slot of disk;When first elastic element is in impaction state, the end face of the host or host ram squeezes First bar, so that deviating from locating slot of second bar by the drive plate.
In an embodiment of the invention, the first gear and the second gear are curved-tooth bevel gear wheel set; External spline teeth is provided in first rotation axis, matched inner spline gear is provided in the endoporus of the first gear;It is described Flat key slot is symmetrically provided in second rotation axis, flat key is symmetrically provided in the endoporus of the second gear.
In an embodiment of the invention, the milling head for numerically-controlled machine tool can also include being arranged at described Expansion sleeve in first rotation axis, the expansion sleeve include:
Circumferential multiple screws;
The first tapered annulus of the section that is sheathed on the screw;
The second tapered annulus of the section that is sheathed on the screw, the narrowed end of second annulus and described first The narrowed end of annulus is oppositely arranged;
It is arranged at the section of first annulus and the second annulus lateral surface the 3rd annulus triangular in shape, described The protrusion of three annulus is filled between first annulus and second annulus;
It is arranged at the section of first annulus and the second annulus medial surface the 4th annulus triangular in shape, described The protrusion of four annulus is filled between first annulus and second annulus;
When the expansion sleeve is squeezed, the expansion end radial contraction of first annulus, the expansion of second annulus Open end radial dilatation.
In an embodiment of the invention, the milling head for numerically-controlled machine tool can also include being arranged at described Graduated ring on body of milling head periphery;The vernier being used for as body of milling head indexing being arranged on the extended seat periphery.
In an embodiment of the invention, the milling head for numerically-controlled machine tool can also include being close to described Plane where body of milling head end, the water dumping slot being circumferentially formed at below the plane in second rotation axis;It is close to institute Body of milling head end place plane is stated, side is circumferentially formed at the labyrinth seal portion in second rotation axis on this plane;Institute Stating labyrinth seal portion includes:It is formed at the ring-shaped depression on axle journal in second rotation axis;It is arranged in the ring-shaped depression The second elastic element, the periphery of second elastic element and the body of milling head be in close contact, second elastic element Gap is respectively provided with each surface of the ring-shaped depression.
In an embodiment of the invention, its axial direction is provided with reinforcing rib on the inner headed face of the extended seat.
Since the inner cavity that vertical elongated milling head will often put in part is processed, it requires that body of milling head size is small, prolong The excircle dimension of swinging seat is small.Existing milling head extended seat is using cylindrical, thick-walled structure, weight weight poor rigidity, milling head of the present invention Extended seat using cone, thin-walled and the internal structure that reinforcing rib is set, light-weight rigidity it is good.
The main shaft supporting of existing milling head uses angular contact ball bearing, and gear pair uses straight bevel gear pair, poor rigidity, cutting It can force difference.The second of milling head of the present invention, which rotates, to be pivotally supported using taper roll bearing, and gear pair uses curved-tooth bevel gear wheel set, rigidity Good, cutting power is strong.
Enter in addition, cutting fluid often occurs in existing milling head in the bearing of the second rotation axis, dilution lubricating grease, corrosion axis It holds, causes the situation of bearing failure.The bearing of the second rotation axis of the present invention uses the group of water dumping slot, labyrinth seal and lubricating grease Conjunction mode, not only the size of milling head is small but also sealing effect is good.
The present invention also provides a kind of numerically-controlled machine tool, including:
Any milling head as described above;
At least two are fixedly installed on the positioning pin on the host of the numerically-controlled machine tool or host ram;
Be fixedly embedded in the connecting seat end face etc. quantity and the matched positioning sleeve of positioning pin, it is described fixed There is annular chamber between the periphery and the connecting seat of position set;
The glueing channel connected with the annular chamber and plastic emitting passage being opened on the connecting seat.
The present invention is provided with positioning sleeve on the connecting seat of milling head, and positioning pin is set on host or host ram, fixed Position set after positioning pin centering by the way of encapsulating with being accurately positioned.Such design method so that the positioning pin on host ram Pitch-row tolerance and the pitch-row tolerance of connecting seat can reduce, processing request can be met using common process equipment, therefore dropped Low processing cost.Positioning sleeve is made after can also using superior alloy steel quenching, qualitative, accurate grinding, and stable accuracy uses Long lifespan, even if replacement cost is relatively low after abrasion.
In certain embodiments of the present invention, the connecting seat is used to be embedded in the position of the positioning sleeve and is provided with and outside The venthole of portion's connection, so that when the positioning pin and the positioning sleeve combine, gas inside the positioning sleeve can be through It is discharged by the venthole.
In certain embodiments of the present invention, the numerically-controlled machine tool can also include being fixedly arranged at the numerical control Pulling claw on the host of lathe or host ram;The blind rivet being fixedly arranged on the connecting seat;The pulling claw, which has, to be drawn Tight state and relaxed state:When the pulling claw is in tension, the blind rivet is clamped by the pulling claw;At the pulling claw When relaxed state, the blind rivet can be disengaged with the pulling claw.
In certain embodiments of the present invention, the numerically-controlled machine tool can also be used for including being arranged at the connecting seat The signal shaft on end face being bonded with the host or host ram of the numerically-controlled machine tool;It is arranged at the host of the numerically-controlled machine tool Or on host ram and the matched signal supervisory instrument of signal shaft.
Numerically-controlled machine tool provided by the present invention being capable of automatic loading and unloading milling head.The milling head is equipped with quasi- stop device, lathe or machine Bed ram is equipped with signal shaft.When loading and unloading milling head, milling head positions in head storehouse or attachment trolley, by host (ram) along X and Y-direction Setting position (host main-shaft core and milling head central alignment) is moved to, pulling claw is unclamped, host is moved into setting position along Z-direction (host ram end face with milling head connecting seat end contact), tenses pulling claw, the blind rivet on pulling claw automatic tension milling head connecting seat, so It sequentially starts Y, Z, X-coordinate by setup program afterwards to complete to change head action, this process is by machine tool numerical control system automated execution, behaviour As long as making, worker presses executive button, a process is changed in monitoring, as long as loading and unloading about 5 minutes, drastically increases work effect Rate.Quasi- stop device and signal shaft constitute identification safety guard, therefore will not damage or damage milling head and host or host Ram.
Description of the drawings
Fig. 1 is the numerically-controlled machine tool for the milling head that different size is put in head storehouse;
Fig. 2 is the front view that milling head and host ram combine;
Fig. 3 is the right view of milling head;
Fig. 4 is along the sectional view of A-A hatchings in Fig. 3;
Fig. 5 is along the sectional view of F-F hatchings in Fig. 4;
Fig. 6 is the enlarged diagram of the quasi- stop device shown in Fig. 4;
Fig. 7 is the schematic diagram of the quasi- stop device of milling head;
Fig. 8 is the sectional view along the B-B hatchings in Fig. 7;
Fig. 9 is the partial enlarged view of expansion sleeve in Fig. 4;
Figure 10 is milling head internal construction details displaying figure;
Water dumping slot and the partial enlarged view of labyrinth seal (H parts) in Figure 11 Fig. 4;
Figure 12 is along the partial sectional view of C-C hatchings in Fig. 4;
Figure 13 is along the sectional view of D-D hatchings in Fig. 3;
Figure 14 is along the sectional view of E-E hatchings in Fig. 3;
Figure 15 is the schematic diagram of the signal shaft cooperation in detection switch and milling head on host or host ram.
Specific embodiment
In order to make the purpose, technical scheme and advantage of invention clearer, in the following with reference to the drawings and specific embodiments to hair It is bright to be described in further detail.Although disclosure exemplary embodiment is shown in attached drawing, it being understood, however, that can be with each Kind form realizes the present invention without should be limited by embodiments set forth here.It is to be able on the contrary, providing these embodiments The more thorough explanation present invention, and the scope of the present invention can be completely communicated to those skilled in the art.
By it is shown in FIG. 1 with the numerically-controlled machine tool of ram exemplified by, the main shaft of the host of the numerically-controlled machine tool is arranged at host cunning On pillow, ram can move to exact position according to the instruction of digital control system in the motion range in tri- directions of X, Y, Z, and then Host main shaft can be combined with different type, various sizes of attachment in head storehouse.
With reference to shown in Fig. 2~Fig. 4, one embodiment of the invention provides a kind of milling head for numerically-controlled machine tool, mainly includes For connected with host ram 1 connecting seat 2, extended seat 3, the first rotation axis 4 being arranged in extended seat 3, be arranged at first First gear 5, body of milling head 6 in rotation axis 4, the second rotation axis 7 being arranged in body of milling head 6 are arranged in the second rotation axis 7 Second gear 8.
The shape of an end face and the end surface shape of host ram 1 of connecting seat 2 match, and with for host main shaft into The hole entered.Extended seat 3 is positioned by another end face of pin and connecting seat 2, is then fixed by screw.First rotation axis 4 It is arranged in extended seat 3, its one end can be connected with host main shaft 1-1.Body of milling head 6 is fixedly installed on one end of extended seat 3, and And it has the hole entered for the first rotation axis 4.Second rotation axis 7 is arranged in body of milling head 6.Second gear 8 is fixedly disposed In in the second rotation axis 7, second gear 8 and first gear 5 match.Therefore, the power of host main shaft 1-1 can be via first Rotation axis 4 is passed to the second rotation axis 7.7 orthogonal arrangement of first rotation axis 4 and the second rotation axis.Second rotation axis 7 Lower end be used for fixed cutting tool.
In the present embodiment, host is horizontal, therefore extended seat 3 is horizontally disposed, and body of milling head 6 is vertically arranged.In others Embodiment, when host is vertical, extended seat 3 should be vertically arranged, and body of milling head 6 is then horizontally disposed with.Of course it is not excluded host is deposited In other arrangements, so that extended seat 3 and angled (non-to be mutually perpendicular to) arrangement of body of milling head 6.
With reference to Fig. 5, extended seat 3 is simple revolving body, when needing different development lengths, be may be employed various sizes of Extended seat 3, such as 500mm, 750mm, 1000mm, 1250mm etc..Connecting seat 2 is simple rectangular shape, changes its size So that it can adapt to the host ram of different cross section size, such as 450mm × 450mm, 480mm × 580mm, 500mm × 500mm、520mm×580mm.Split type extended seat 3 and connecting seat 2 manufacture it is more simple, for various sections host slide Pillow and required development length can be selected simply.For example, can simply select be suitable for cross-sectional sizes for 480mm × The connecting seat 2 and Extendible Extent of the host ram of 580mm are the extended seat 3 of 1000mm.
In an embodiment of the invention, substantially in straight mesa-shaped, center section is hammer for the left end of extended seat 3 and right end Body, the diameter of left end is less than the diameter of right end, and four reinforcing ribs are provided in the endoporus of extended seat 3.
With reference to shown in Fig. 3~4, in an embodiment of the invention, transmission is regularly arranged in the first rotation axis 4 Disk 9, has on the end face of drive plate 9 and the matched keyways 91 of straight end-face key 1-2 of host main shaft 1-1, on the periphery of drive plate 9 It is additionally provided with locating slot 92.Quasi- stop device 10 is fixedly installed on the inner headed face of extended seat 3.
Referring in particular to Fig. 6~8, quasi- stop device 10 include being fixedly arranged at housing 101 on the inner headed face of extended seat 3, The elastic element 102 that is fixedly arranged in housing 101, be arranged in housing 101 and contradict stretching on elastic element 102 Contracting element 103.
Housing 101 is fixedly mounted on by screw on extended seat 3, and there are one long and narrow chambers for tool.Elastic element 102 can To use spring, it is arranged in above-mentioned long and narrow chamber.One end of elastic element 102 is contradicted on the inner wall of housing 101.It stretches One end that contracting element 103 and elastic element 102 contact is in "] " shape.The depth at "] " end is shallower than oneself when elastic element 102 relaxes By length.Telescopic element 103 also has that there are one extend the first bar 104, Yi Jiyi of housing 101 towards 1 direction of host ram A radial direction towards drive plate 9 extends the second bar 105 of housing 101.Second bar 105 can be with the positioning of drive plate 9 Slot 92 matches.
In use, elastic element 102 has relaxed state and impaction state, when elastic element 102 is in relaxed state, Second bar 105 is in the locating slot 92 of drive plate 9.When the end face of host ram squeeze the first bar 104 when, the first bar 104 to It moves left, elastic element 102 is compressed, and the second bar 105 is moved to the left to be deviate from by the locating slot 92 of drive plate 9 simultaneously.
The advantages of this design method, is that (i.e. milling head is not selected, and is not slided with host or host when milling head leaves unused Pillow combines), by the locking of 92 and second bar 105 of locating slot of drive plate 9, so that the first rotation axis 4 does not rotate, into And the keyway 91 on drive plate 9 is horizontal forever.When milling head is selected, the straight end-face key 1-2 of host main shaft 1-1 is with regard to energy Enough be exactly into keyway 91, avoid relative position mistake between drive plate 9 and host main shaft 1-1 and caused by end It damages in face.
In an embodiment of the invention, it is arranged in the first rotation axis 4 there are one expansion sleeve 11, in the expansion sleeve 11 Expansion under, complete the connection of the first rotation axis 4 and drive plate 9.
With reference to shown in Fig. 4 and Fig. 9, specifically, which includes the first tapered annulus 111 of section, section is in Second annulus 112 of taper, section the 3rd annulus 113 triangular in shape, section the 4th annulus 114 triangular in shape and along Multiple screws 115 of circle distribution.The narrowed end of first annulus 111 and the second annulus 112 is relatively sheathed on multiple screws 115 On, therefore it is inwardly formed recess in their lateral surface and medial surface.Section the 3rd annulus 113 triangular in shape is used as outer ring The lateral surface of the first annulus 111 and the second annulus 112 is placed on, the protrusion of the 3rd annulus 113 is filled in 111 He of the first annulus In recess between second annulus 112.Section the 4th annulus 114 triangular in shape is arranged at 111 He of the first annulus as inner ring The medial surface of second annulus 112, the protrusion of the 4th annulus 114, which is filled between the first annulus 111 and the second annulus 112, to be recessed It is interior.Expansion sleeve 11 is squeezed when using multiple screws 115, the expansion end (the big one end of diameter) of the first annulus 111 first Radial contraction, expansion end (the big one end of diameter) radial dilatation of subsequent second annulus 112 squeeze the 3rd annulus 113 and the 4th Annulus 114 makes its deformation so that the periphery swelling drive plate 9 of the 3rd annulus 113 so that the inner headed face of the 4th annulus 114 is swollen Tight first rotation axis 4.It is interference fit actually between 11 and first rotation axis 4 of expansion sleeve, drive plate 9.
Figure 10 is the content phase of the schematic diagram that milling head provided by the invention is installed on host ram, Figure 10 and Fig. 4 expressions Together, it is merely for convenience that detail section is marked and described.
With reference to shown in Figure 10, the main bearing 31, bearing 32 and bearing 33 by being arranged in extended seat 3 of the first rotation axis 4 Supporting positioning.Positioning sleeve 34 and positioning sleeve 35 are installed in the endoporus of extended seat 3.Bearing 31, bearing 32 are installed on positioning sleeve 34 On, and separated by the equal outer separator 36 of thickness and inner spacing collar 37, to increase supporting rigidity.Bearing 33 is installed on positioning sleeve 35 On.
Extended seat 3 and body of milling head 6 are positioned via sleeve 12, and by four along the circumferentially distributed screw in 3 left side of extended seat With the nut fastening being arranged in 6 right side T-slot of body of milling head.It is provided between sleeve 12 and the axle journal of first gear 5 in pairs Angular contact ball bearing 36, the paired angular contact ball bearing 36 are locked nut check on the axle journal of first gear 5, and by bearing 37 axially position of lid.Paired angular contact ball bearing 36 is separated by inner spacing collar 38 and outer separator 39.
In an embodiment of the invention, the second rotation axis 7 is rolled by being arranged on the high-precision conical inside body of milling head 6 The sub- supporting of bearing 61,62 positioning, then pre-tightened by locking nut 63, adjusting washer 64 and 65.Cutter is then by being arranged on the second rotation Screw 71 in 7 end cone hole of axis tenses, and the keyway on cutter can be with 72 knot of straight end-face key of 7 end of the second rotation axis It closes, to realize the smooth transfer of power.
With reference to Fig. 4 and Figure 11, in an embodiment of the invention, the milling head for numerically-controlled machine tool further includes tightly Plane where against 6 end of body of milling head, the water dumping slot being circumferentially formed at below the plane in second rotation axis 73.And it is close to plane where 6 end of body of milling head, side is circumferentially formed at second rotation axis 7 on this plane On labyrinth seal portion.Labyrinth seal portion includes the ring-shaped depression 74 being formed in the second rotation axis 7 on axle journal and is arranged at ring The second elastic element 75 in shape recess 74.The periphery and body of milling head 6 of second elastic element 75 are in close contact, the second elasticity member Each surface of part 75 and ring-shaped depression 74 (upper, left, lower three faces in Figure 11) is respectively provided with gap.Moisten for filling in above-mentioned gap Lubricating oil fat.
During work, lubricating grease is filled between 74 and second elastic element 75 (can be spring leaf) of ring-shaped depression, is conducive to Therebetween relative motion, and can further prevent in the entrance bearing of cutting fluid.The main shaft bearing of existing milling head is adopted With clearance seal, it is impossible to obstruct cutting fluid well, cutting fluid often occur into dilution profit in the bearing 62 of the second rotation axis 7 Consistent lubricant, corrosion bearing, cause bearing failure.Present embodiment then uses the combination of water dumping slot+labyrinth seal+lubricating grease, The size of the part is not only reduced, and with better seal effect.
In an embodiment of the invention, can also spacer be set on the axle journal of first gear 5 and second gear 8 13 and spacer 14, in favor of adjustment first gear 5 and the meshing state of second gear 8.
With reference to shown in Fig. 4, in an embodiment of the invention, above-mentioned first gear 5 and second gear 8 are arc Bevel gear pair.The periphery of second rotation axis 7 is symmetrically provided with flat key slot, is provided in the endoporus of second gear 8 symmetrical Ground flat key.Join shown in Figure 12, external spline teeth is provided in the first rotation axis 4, be provided in the endoporus of first gear 5 in matched Spline tooth.
In an embodiment of the invention, the side of body of milling head 6 is also provided with processing, assembles, repairs Dismountable cover board 66 of maintenance.
In addition, the present invention also provides a kind of numerically-controlled machine tools.Since Fig. 4 and Figure 10 show milling head and machine ram phase With reference to schematic diagram, therefore herein this kind of numerically-controlled machine tool is described referring still to Fig. 4 and Figure 10.
With reference to Fig. 3, Fig. 4 and Figure 13, numerically-controlled machine tool provided by the present invention includes arbitrary embodiment as described above Milling head, and two positioning pin 1-3 are at least set on the host ram 1 of numerically-controlled machine tool, it is fixed in the end face of connecting seat 2 The quantity such as embedded and described matched positioning sleeves 21 of positioning pin 1-3.There is ring between the periphery of positioning sleeve 21 and connecting seat 2 Shape chamber 22.The glueing channel 23 connected with annular chamber 22 and plastic emitting passage 24 are offered on the connecting seat 2.Positioning glue can be from Glueing channel 23 enters, and after entire annular chamber 22, part positioning glue is discharged by plastic emitting passage 24 (to prove annular chamber 22 It is filled).After encapsulating, positioning sleeve 21 is limited in the degree of freedom of six direction.
Using this design method, the pitch-row tolerance on host ram 1 and connecting seat 2 can be loosened, with common equipment Processing request can be met, reduce processing cost.Even if host ram 1 and connecting seat 2 go out in initial positioning combination Now position deviation slightly will not be damaged because of rigid collision, and technical staff only needs to use encapsulating again after the two is combined Mode be accurately positioned.Using being made after superior alloy steel quenching, qualitative, accurate grinding, stable accuracy uses positioning sleeve Long lifespan, even if replacement cost is relatively low after abrasion.
With continued reference to Figure 13, in an embodiment of the invention, the position that connecting seat 2 is used to be embedded in positioning sleeve 21 is set The venthole 25 connected with outside is equipped with, so that when positioning pin 1-3 and positioning sleeve 21 combine, the gas energy inside positioning sleeve 21 It is enough to be discharged via venthole 25.
With reference to Fig. 3, Fig. 4 and Figure 14, in an embodiment of the invention, numerically-controlled machine tool, which further includes, to be fixedly arranged at Pulling claw 1-4 on host or host ram 1, the blind rivet 26 being fixedly arranged on institute's connecting seat 2.Pulling claw 1-4, which has, to be tensed State and relaxed state:When the pulling claw 1-4 is in tension, blind rivet 26 is clamped by pulling claw 1-4, to realize connecting seat 2 With being fixedly connected for host ram 1.When the pulling claw 1-4 is in relaxed state, blind rivet 26 can be disengaged with pulling claw 1-4, with Milling head is disassembled from host ram 1.In the embodiment shown in fig. 3, pulling claw 1-4 and blind rivet 26 it is each there are four.
With reference to shown in Fig. 4 and Figure 15, in an embodiment of the invention, in connecting seat 2 and the host of numerically-controlled machine tool Or it is provided with signal shaft 27 on the end face of the fitting of host ram 1.It is provided on the host of numerically-controlled machine tool or host ram 1 With 27 matched signal supervisory instrument 1-5 of signal shaft.
In order to expand the range of work of numerically-controlled machine tool host, several function accessories heads are needed to configure under normal circumstances.Each The power of function accessories head, torque, the axial stroke (distance of stretch out and draw back) of rotating speed and host main shaft are all different, therefore host needs Identification current state is empty driving state or attachment status, and further identification is which attachment (vertical elongated milling head, omnipotent milling Head, facing head etc.) it is installed on host.Therefore, a signal shaft 27, each attachment can be installed on each accessory head Signal shaft 27 relative position it is different.Installation detecting device 1-5 (the photoelectricity on the correspondence position of host or host ram 1 Detection switch).It defines different switches and corresponds to different signal shafts 27.For example, the corresponding vertical elongated milling head of No. 1 switch, when 1 When number switch obtains signal (signal shaft triggering photoelectric detection switch), system is just automatic to call the special sub- journey of vertical elongated milling head Sequence carries out axial stroke (distance of stretch out and draw back) limitation of power, torque, rotating speed and host main shaft, in order to avoid damage lathe or generation Security incident.
Various embodiments of the present invention are described in detail above.It it will be understood by those skilled in the art that can be not inclined In the case of from the scope of the invention (being limited by the accompanying claims), embodiment is carry out various modifications, change and is become Change.Explaining for right should be explained from whole and meet the widest range consistent with illustrating, however it is not limited to example or Implementation example in detailed description.

Claims (10)

1. the milling head of numerically-controlled machine tool is used for, including:
The connecting seat that host or host ram shape of the end face with the numerically-controlled machine tool match, the connecting seat, which has, to be supplied The hole that the host main shaft enters;
For the extended seat being fixedly connected with the connecting seat other end;
Be arranged in the extended seat for the first rotation axis for being fixedly connected with the main shaft of the host;
The first gear being fixedly installed in first rotation axis;
For the body of milling head being fixedly connected with the extended seat, first rotation axis can enter the body of milling head;
The second rotation axis for being used to that cutter to be driven to rotate being arranged in the body of milling head, first rotation axis and described second Rotation axis is arranged mutual vertically;And
The second gear being fixedly installed in second rotation axis, the second gear and the first gear are mutually matched, So that the power of the host main shaft can be conducted via first rotation axis to the second rotation axis;
The drive plate being regularly sheathed in first rotation axis, has on the end face of the drive plate and the master of the host Axial end key matched keyway is additionally provided with locating slot on the drive plate;And
Quasi- stop device, including:
It is fixedly arranged at the upper housing of the extended seat;
It is fixedly arranged in vivo first elastic element of the shell;
Be arranged at the shell it is in vivo and with the associated telescopic element of the first elastic element, the telescopic element have towards The host or the host ram direction are extended the first bar of the housing and are extended towards the drive plate radial direction Go out the second bar of the housing;
First elastic element has relaxed state and impaction state:
When first elastic element is in relaxed state, second bar is in the locating slot of the drive plate;
When first elastic element is in impaction state, the end face of the host or host ram squeezes described first Bar, so that deviating from locating slot of second bar by the drive plate.
2. the milling head according to claim 1 for numerically-controlled machine tool, wherein:
The first gear and the second gear are curved-tooth bevel gear wheel set;
External spline teeth is provided in first rotation axis, matched inner spline gear is provided in the endoporus of the first gear;
Flat key slot is symmetrically provided in second rotation axis, flat key is symmetrically provided in the endoporus of the second gear.
3. the milling head according to claim 1 for numerically-controlled machine tool, including:
The expansion sleeve being arranged in first rotation axis, the expansion sleeve include:
Circumferential multiple screws;
The first tapered annulus of the section that is sheathed on the screw;
The second tapered annulus of the section that is sheathed on the screw, the narrowed end of second annulus and first annulus Narrowed end be oppositely arranged;
It is arranged at the section of first annulus and the second annulus lateral surface the 3rd annulus triangular in shape, the 3rd circle The protrusion of ring is filled between first annulus and second annulus;
It is arranged at the section of first annulus and the second annulus medial surface the 4th annulus triangular in shape, the 4th circle The protrusion of ring is filled between first annulus and second annulus;
When the expansion sleeve is squeezed, the expansion end radial contraction of first annulus, the expansion end of second annulus Radial dilatation.
4. the milling head according to claim 1 for numerically-controlled machine tool, including:
The graduated ring being arranged on the body of milling head periphery;
The vernier being used for as body of milling head indexing being arranged on the extended seat periphery.
5. the milling head according to claim 1 for numerically-controlled machine tool, including:
Plane where being close to the body of milling head end, is circumferentially formed at getting rid of in second rotation axis below the plane Sink;
It is close to body of milling head end place plane, side is circumferentially formed at the fan in second rotation axis on this plane Palace sealing;
The labyrinth seal portion includes:
It is formed at the ring-shaped depression on axle journal in second rotation axis;
The second elastic element being arranged in the ring-shaped depression, the periphery and the body of milling head of second elastic element are tight Contiguity is touched, and each surface of second elastic element and the ring-shaped depression is respectively provided with gap.
6. the milling head according to claim 5 for numerically-controlled machine tool, wherein:
Its axial direction is provided with reinforcing rib on the inner headed face of the extended seat.
7. numerically-controlled machine tool, including:
Such as milling head according to any one of claims 1 to 6;
At least two are fixedly installed on the positioning pin on the host of the numerically-controlled machine tool or host ram;
Be fixedly embedded in the connecting seat end face etc. quantity and the matched positioning sleeve of positioning pin, the positioning sleeve Periphery and the connecting seat between have annular chamber;
The glueing channel connected with the annular chamber and plastic emitting passage being opened on the connecting seat.
8. numerically-controlled machine tool according to claim 7, including:
The position that the connecting seat is used to be embedded in the positioning sleeve is provided with the venthole connected with outside, so that the positioning When pin and the positioning sleeve combine, the gas inside the positioning sleeve can be discharged via the venthole.
9. the numerically-controlled machine tool according to claim 7 or 8, including:
The pulling claw being fixedly arranged on the host or host ram of the numerically-controlled machine tool;
The blind rivet being fixedly arranged on the connecting seat;
The pulling claw has tension and relaxed state:
When the pulling claw is in tension, the blind rivet is clamped by the pulling claw;
When the pulling claw is in relaxed state, the blind rivet can be disengaged with the pulling claw.
10. the numerically-controlled machine tool according to claim 7 or 8, including:
Be arranged at the connecting seat for and the numerically-controlled machine tool host or host ram be bonded end face on signal shaft;
It is arranged on the host or host ram of the numerically-controlled machine tool the and described matched signal supervisory instrument of signal shaft.
CN201611123087.7A 2016-12-08 2016-12-08 For the milling head and numerically-controlled machine tool of numerically-controlled machine tool Expired - Fee Related CN106378481B (en)

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Publication number Priority date Publication date Assignee Title
CN107116388B (en) * 2017-05-26 2023-03-21 山东蒂德精密机床有限公司 Automatic head changing mechanism of bridge type five-axis gantry machining center
CN112122925A (en) * 2020-08-25 2020-12-25 北京北一机床股份有限公司 Multi-shaft output drilling and milling head device with feeding function and method

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