CN105458747A - Transmission device as well as drive system adopting transmission device and rotary workbench - Google Patents
Transmission device as well as drive system adopting transmission device and rotary workbench Download PDFInfo
- Publication number
- CN105458747A CN105458747A CN201610021225.4A CN201610021225A CN105458747A CN 105458747 A CN105458747 A CN 105458747A CN 201610021225 A CN201610021225 A CN 201610021225A CN 105458747 A CN105458747 A CN 105458747A
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- Prior art keywords
- gear
- transmission device
- worm screw
- worm
- rotary table
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 41
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 22
- 238000001125 extrusion Methods 0.000 claims description 11
- 230000004308 accommodation Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 210000004907 gland Anatomy 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
- B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
Abstract
The invention provides a transmission device for a rotary workbench. The workbench is provided with a gear ring, and comprises a housing, a gear shaft arranged on the housing, a worm wheel fixedly arranged on a shaft part of the gear shaft and a worm arranged in the housing, wherein the gear shaft comprises a gear part and the shaft part; the gear part is matched with the gear ring; the worm can axially move; the worm is provided with a plurality of teeth with different thicknesses; and at least one tooth is matched with the worm wheel. Besides, the invention further provides a drive system adopting the transmission device, and the rotary workbench. According to the transmission device, the drive system adopting the transmission device and the rotary workbench provided by the invention, teeth with different thicknesses are arranged on the worm. By moving the worm, the tooth with the optimal thickness on the worm is engaged with the worm wheel, so that zero-clearance transmission between the worm and the worm wheel is realized; and the transmission device is simple in structure, and is easy to process and manufacture, and the transmission precision is remarkably improved.
Description
Technical field
The present invention relates to the transmission field in machining, particularly a kind of rotary table for Digit Control Machine Tool transmission device and adopt the drive unit of this transmission device.
Background technology
At present, the rotary table of Digit Control Machine Tool must adopt to close and arrange, and therefore, the mechanical driving device for rotary table is had higher requirement.If the precision of the whole transmission device of rotary table is not high or there is back clearance between gear, so by very difficult guarantee rotary table precision operationally and reliability.Whenever needing the precision of the transmission device adjusting rotary table, all need the external shell of closed rotary table to remove, operation inconvenience, wastes time and energy.
For the small-sized rotary table of load-bearing below 5 tons, type of drive mainly comprises that torque motor directly drives, large worm gear and worm speed-down driving, gear reduction box driving etc.The cost that torque motor directly drives is higher, is applicable to high-end lathe, is not easy to popularize.The turbine diameter that large worm gear and worm speed-down drive is comparatively large, is not easy to processing and manufacturing, and the material price manufacturing worm gear is higher, worm gear serious wear.Gear reduction box drives the gear reduction box complex structure adopted, and is unfavorable for being applied on small-sized rotary table.
Summary of the invention
In view of problems of the prior art, the invention provides a kind of transmission device for rotary table, described workbench has gear ring, comprising: housing; Be arranged at the gear shaft on described housing, described gear shaft comprises gear part and axle portion, and described gear part is mated with described gear ring; Be fixedly arranged at the worm gear in the axle portion of described gear shaft; Be arranged at the worm screw in described housing, described worm screw can along its axially-movable, and described worm screw has the different tooth of multiple thickness, and tooth described at least one mates with described worm gear.
In certain embodiments of the present invention, described multiple tooth along the axially-aligned of described worm screw, and the thickness of described multiple tooth by one end to other end progressive additive or thinning.
This setup is comparatively simple.The thickness progressive additive of multiple tooth be arranged in order or thinning comparison are easy to processing, reduce manufacturing cost.In addition, when worm screw is when enclosure interior is along self axially-movable, also more easily makes worm gear choose the tooth be arranged on worm screw matched with it, thus complete tight mesh.
In certain embodiments of the present invention, the inwall of described housing is formed with chamber; The first end of described worm screw is arranged in described chamber, and second end of described worm screw is provided with positioning sleeve regularly, and described positioning sleeve is connected by the inwall of tightening member with described housing; Described worm screw and described housing are configured to: when rotating described tightening member, described worm screw can along its axially-movable in described housing.
In order to not change shape and the structure of worm screw, can arrange positioning sleeve in some embodiments on worm screw, and adopt tightening member positioning sleeve to be fixed on the inwall of housing, during to make to adjust tightening member, positioning sleeve drives worm screw along its axially-movable.
In certain embodiments of the present invention, enclosure space is formed between described positioning sleeve and second end of described worm screw; Be provided with in described seal cavity and organize bearing more, when rotating to avoid worm screw and positioning sleeve main body rub.
In certain embodiments of the present invention, the transmission device of described rotary table comprises the cover plate of the axle portion end being fixedly arranged at described gear shaft; Be arranged at the adjustment packing ring between described worm gear and described inner walls.
In certain embodiments of the present invention, the transmission device of described rotary table comprises the swelling element be arranged between described worm gear and described axle portion.
Except the tooth and worm gear of selecting suitable worm screw are meshed, another key factor affecting transmission accuracy is the high and low position of worm gear in housing and the perpendicularity of the central plane of worm gear and the central shaft of worm screw.Those skilled in the art should understand, and when the correct position of worm gear in housing makes the central axis of the central plane of worm gear and worm screw, what the tooth on worm gear and worm screw will be enable to engage is more tight, thus reaches higher transmission accuracy.
Present invention also offers a kind of drive system for rotary table, comprising:
As any one transmission device as described in claim; And the drive unit had for the output shaft be connected with described worm screw.
In certain embodiments of the present invention, second end of described worm screw has the hole that can hold described output shaft; Swelling element is provided with between described output shaft and described hole.
In addition, present invention also offers a kind of rotary table, it is characterized in that, comprising:
For carrying the pedestal of workbench; And be fixed on upper any one described transmission device of described pedestal; Or any one drive system.
In certain embodiments of the present invention, be arranged at the block of cross section roughly in " ┒ " shape on described pedestal, between described block and described pedestal, form spatial accommodation; The installing plate of the strip that middle part is fixedly connected with described housing, described installing plate stiff end is fixed on described pedestal, and the free end of described installing plate is positioned at described spatial accommodation; Be arranged at the elasticity extrusion element for extruding described installing plate free end on described block, described elasticity extrusion element by controlling the position of installing plate free end, can remain engagement to make described gear ring and described gear.
In certain embodiments of the present invention, the free end of described installing plate arranges the first through hole; The vertical end of described block arranges the screwed hole be interconnected and the second through hole, and the diameter of described second through hole is greater than the diameter of described first through hole and the diameter of described screwed hole; Described extrusion element has the end of mating with described first through hole and the afterbody mated with described screwed hole; Can also comprise the end that is arranged at described extrusion element and be positioned at the butterfly spring sheet of described second through hole, the diameter of described butterfly spring sheet is suitable with the diameter of described second through hole.
In present embodiment, extrusion element can select stair-stepping screw, and when revolving extrusion element, the cascaded surface extruding butterfly spring sheet of extrusion element makes its deformation, and butterfly spring sheet promotes installing plate and moves towards the direction of pedestal.Therefore, gear and gear ring can remain good engagement.
Preferably, larger distortion is produced in order to enable installing plate, namely make the free end of installing plate can swing to a greater extent in spatial accommodation, otch can also be offered at the middle part of installing plate, to make the free end of installing plate can with this incision for the strong point swings.
Transmission device provided by the invention and adopt the drive system of this transmission device and rotary table to be provided with the tooth of different-thickness on worm screw.By mobile worm screw, tooth worm screw with optimum thickness is meshed with worm gear, realizes the zero clearance transmission of worm and worm wheel.Transmission device provided by the invention and adopt the structure of the drive system of this transmission device and rotary table simple, is easy to processing and manufacturing, improves transmission accuracy significantly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, briefly explain the accompanying drawing used in embodiment or description of the prior art below.
Fig. 1 show schematically show the rotary table structure of an embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the cooperation schematic diagram of gear and gear ring;
Fig. 4 is the partial enlarged drawing of C part in Fig. 2;
Fig. 5 is the structural representation along the A-A hatching in Fig. 2;
Fig. 6 is the structural representation along the B-B hatching in Fig. 5;
Fig. 7 is the schematic diagram of the tooth of worm screw.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Illustrate at this, obviously, be only some embodiments of the present invention shown in accompanying drawing, object enables those skilled in the art understand inner characteristic of the present invention.Those of ordinary skill in the art according to disclosed accompanying drawing and explanation thereof, can make amendment or other equivalent modification or replacement scheme.Therefore, scope of the present invention is not subject to the restriction of these accompanying drawings and explanation.
With reference to Fig. 1, the invention provides a kind of rotary table, comprise workbench (not shown), pedestal 1, gear ring 2 and drive system 3.Gear ring 2 is fixed on the lower surface of workbench.Conveniently observe and describe, in Fig. 1, eliminating workbench, only show pedestal 1, gear ring 2 and drive system 3.Drive system 3 is fixedly arranged at the side of pedestal 1.
In the present embodiment, the housing 31 of drive system 3 is connected with pedestal 1 by installing plate 4.Drive system 3 has the gear 32 stretching out its housing 31.Gear 32 and above-mentioned gear ring 2 have the tooth matched, and when therefore gear 32 rotates, it can drive gear ring 2 to rotate together.The concrete structure of drive system 3 will hereafter set forth.
See Fig. 1, Fig. 2 and Fig. 4, installing plate 4 roughly in strip, have in the middle part of it extend horizontally away curved portions 41.Installing plate 4 is fixedly connected with by screw with the housing 31 of drive system 3 by the curved portions 41 of horizontal-extending.One end of installing plate 4 is installed on pedestal 1 regularly, and the other end becomes free end unfetteredly.The free end of installing plate 4 is offered a through hole 42.Pedestal 1 is provided with block 11, its cross sectional shape roughly in " ┒ " shape, forms spatial accommodation 7 between block 11 and pedestal 1.The free end of installing plate 4 is positioned at described spatial accommodation 7.With reference to Fig. 4, the vertical portion of this block 11 is offered the through hole 111 and screwed hole 112 that are interconnected.The diameter of through hole 111 is greater than the diameter of screwed hole 112 and the diameter of through hole 42.
Screw 5 has hierarchic structure, and it comprises the less end of diameter 51 and the larger afterbody 52 of diameter, and described end 51 can via within the through hole 42 entering installing plate 4 after through hole 111, and described afterbody 52 can be threaded with the screwed hole 112 of block 11.
The sheathed disc spring film 6 in end 51 of screw 5, and butterfly spring sheet 6 is positioned at through hole 111.
According to above-mentioned setting, operator can pass through rotary screw 5 forward or backwards, thus the decrement of adjustment disc spring film 6, and then the spring force of adjustment disc spring film 6.When the transverse tooth thickness of gear ring 2 or gear 32 is less than theoretical value, disc spring film 6 discharges (free end of installing plate 4 is to left movement), close to gear ring 2 to promote gear 32.When the transverse tooth thickness of gear ring 2 or gear 32 is larger than theoretical value, disc spring film 6 is compressed (free end of installing plate 4 moves right), and gear 32 still can be kept near gear ring 2.Therefore, the tooth of gear 32 can automatically closely engage with the tooth of gear ring 2 all the time.And then the engagement degree of the gear 32 of control gear ring 2 and drive system 3.As shown in Figure 3, the two sides of the tooth of gear 32 fit with the tooth of gear ring 2 all the time, with the gear backlash eliminating manufacture, alignment error is brought, realize clearance automatic compensation, complete gapless driving.
In one embodiment of the invention, the middle part of installing plate 4 has otch D.Arranging otch D can the rigidity of reduction installing plate 4 of local, to make the free end of installing plate 4 can along the larger swingingly amplitude of left and right directions as shown in Figure 2.
Those skilled in the art should understand, and installing plate 4 is also nonessential.When the shape of the housing 31 of drive system 3 has with the shape that installing plate 4 is similar, namely housing 31 can meet installation location needs, then can housing 31 be directly installed on rotary table pedestal 1 by the way, to reach the object omitting installing plate 4.In addition, block 11 is also inessential, can by the manufacturing process of various routine, make pedestal 1 self have outward extending bending part, to play the effect identical with block 11.
With reference to Fig. 5 and Fig. 6, drive system 3 comprises housing 31, gear 32, worm gear 33, worm screw 34, drive unit 35.As mentioned above, except gear 32 is arranged at the outside of housing 31, it is inner that worm gear 33, worm screw 34 and drive unit 35 are all arranged on housing 31.
In the present embodiment, a surface of gear 32 extends to form axle 321, and the diameter of gear 32 is greater than the diameter of axle 321, and in fact gear 32 and axle 321 constitute gear shaft.Certainly, gear 32 and axle 321 also can be two independently parts.
Housing 31 is provided with the hole suitable with axle 321 diameter.During installation, gear 32 is positioned at the outside of housing 31, and 321, axle is penetrated in housing 31 by the hole on housing 31.Gear 32 engages with the gear ring 2 be positioned on rotary table pedestal 1.The axle 321 of gear 32 is equipped with bearing 322, is fixed in the dead eye of installing plate 4,4 dead eyes of installing plate are provided with shoulder block 43.By the cooperation of bearing 322 and shoulder block 43, the improper axial displacement limiting gear 32, and reduce frictional force when bearing 322 rotates.
Worm gear 33 is sheathed on axle 321 regularly, and can coordinate with the worm screw 34 being arranged on housing 31 inside.The rotation of worm screw 34 can be conducted to gear 32 by worm gear 33.The diameter of worm gear 33 is greater than the bore dia on housing 31.
Worm gear 33 is fixed on axle 321 by detent mechanism 38, and by regulating detent mechanism 38 can change the height of worm gear 33 in housing 31.Specifically, detent mechanism 38 comprises cover plate 381, screw 382, expansion sleeve 383, adjustment packing ring 384 and shoulder block 385.Cover plate 381 is fixedly connected with by screw 382 with axle 321, and worm gear 33 is pressed on axle 321 by cover plate 381 in advance, and arranges expansion sleeve 383 between worm gear 33 and axle 321.Axle 321 is provided with shoulder block 385, adjustment packing ring 384 is set between shoulder block 385 and worm gear 33.
Therefore, as long as change the thickness of adjustment packing ring 384, just can change the high and low position of worm gear 33, and then adjust the central plane of worm gear 33 and the central axis degree of worm screw 2.The thickness of adjustment packing ring 384 is adjusted by the mode of match grinding, after adjustment, and rotary screw 382, to make cover plate 381 compress worm gear 34, finally swelling expansion sleeve 383 again, thus worm gear 33 is fixed on gear 32.Arrange in the manner described above, the central plane of worm gear 33 remains vertical with the central shaft of worm screw 2, to make can better engage therebetween.
In certain embodiments of the present invention, if the inwall of housing 31 can form the shape identical with shoulder block 385, then shoulder block 385 is omissible.
With further reference to Fig. 6, housing 31 there is a chamber 311, be provided with bearing 312 this chamber 311 internal fixtion.The first end of worm screw 34 is arranged in this chamber 311, and bearing 312 can be sheathed on the first end of worm screw 34.As shown in Figure 6, under normal circumstances, the first end of worm screw 34 is not conflicted with the inwall of the shell 31 forming chamber 311, but leaves certain mobile space, to make worm screw 34 can along the axially-movable of self.Should understand, according to such setting, worm screw 34 can be rotated, and also can move along above-below direction as shown in Figure 6.
Second end of worm screw 34 is provided with positioning sleeve 36 regularly.Positioning sleeve 36 is fixedly connected with by the inwall of tightening member 37 with housing 31.Tightening member 37 can comprise screw 371 and screw 372.When trip bolt 371, lax screw 372, positioning sleeve 36 promotes worm screw 34 and is moved upward, and darker enters in chamber 311 by the first end of worm screw 34.When lax screw 371, trip bolt 372, positioning sleeve 36 drives worm screw 34 to move downwards, and the first end of worm screw 34 is positioned at return in the more shallow position of chamber 311.
In one embodiment of the invention, described positioning sleeve 36 comprises positioning sleeve main body 361, gland 362, bearing 363 and locking nut 364.Form seal cavity between positioning sleeve main body 361 and second end of described worm screw 34, load bearing 363 in sealing space, the outer ring of bearing 363 is compressed by gland 362, and by gland 362 and positioning sleeve main body 1 fixed-link.The inner ring of bearing 363 is locked by locking nut 364.Such worm screw 34 just constitutes an entirety with positioning sleeve 36, and change the axial displacement of positioning sleeve 36, worm screw 34 just moves axially thereupon, and the frictional force produced when favourable reduction worm screw 34 is rotated.
In fact, housing 31, gear 32, worm gear 33 and worm screw 34 constitute transmission device.
Second end of worm screw 34 is connected with the output shaft of drive unit 35, arranges swelling element between described output shaft and described hole.During the output shaft rotation of drive unit 35, worm screw 34 is driven.Housing 31, gear 32, worm gear 33, worm screw 34 and drive unit 35 constitute drive system 3.
With reference to shown in Fig. 7, worm screw 34 has multiple tooth 341 along its axially-aligned, and the thickness of its multiple tooth 341 is different, and it is thickening or thinning gradually to the other end by one end.Solid line in Fig. 7 represents Changeable Lead gradually thick profile of tooth, and dotted line represents standard tooth form.T is nominal axial pitch, t
1for right side axial pitch, t
2for left side axial pitch, Δ t is the difference of left side axial pitch, right side axial pitch and nominal axial pitch, then t
1=t+ Δ t, t
2=t-Δ t, therefore, t
1> t
2(right side axial pitch is greater than left side axial pitch), namely axial pitch increases from left to right gradually.
This shows, with the thickness t/2 of the some teeth in centre for standard value, then the thickness being positioned at the tooth in the left side of this tooth successively decreases successively, and the thickness being positioned at the tooth on the right side of this tooth increases progressively successively, forms a kind of transverse tooth thickness of gradual change.
When worm screw 34 is moved, the position of the tooth 341 on worm screw 34 relative to gear 2 can be adjusted, can engage with gear 2, to eliminate gap to make the tooth of optimum thickness.
In sum, the transmission device that an embodiment of the present invention provides, the drive system adopting this transmission device and rotary table by the position of engagement of the tooth on adjustment installing plate 4 and the distance (gear 32 and gear ring 2 relative position in the horizontal direction) of pedestal 1, the position of worm gear 33 in housing 31 (central plane of worm gear 33 and the perpendicularity of worm screw 34 central shaft) and worm gear 33 and worm screw 34 to eliminate gap, can reach the object improving reliability, accurate transmission.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1., for the transmission device of rotary table, described workbench has gear ring, it is characterized in that, comprising:
Housing;
Be arranged at the gear shaft on described housing, described gear shaft comprises gear part and axle portion, and described gear part is mated with described gear ring;
Be fixedly arranged at the worm gear in the axle portion of described gear shaft;
Be arranged at the worm screw in described housing, described worm screw can along its axially-movable, and described worm screw has the different tooth of multiple thickness, and tooth described at least one mates with described worm gear.
2. the transmission device for rotary table according to claim 1, is characterized in that:
Described multiple tooth along the axially-aligned of described worm screw, and the thickness of described multiple tooth by one end to other end progressive additive or thinning.
3. the transmission device of the rotary table for Digit Control Machine Tool according to claim 2, is characterized in that:
The inwall of described housing is formed with chamber;
The first end of described worm screw is arranged in described chamber, and second end of described worm screw is provided with positioning sleeve regularly, and described positioning sleeve is connected by the inwall of tightening member with described housing;
Described worm screw and described housing are configured to:
When rotating described tightening member, described worm screw can along its axially-movable in described housing.
4. the transmission device of rotary table according to claim 3, is characterized in that:
Enclosure space is formed between described positioning sleeve and second end of described worm screw;
Be provided with in described seal cavity and organize bearing more.
5. the transmission device of the rotary table according to claim 1 or 3, is characterized in that, comprising:
Be fixedly arranged at the cover plate of the axle portion end of described gear shaft;
Be arranged at the adjustment packing ring between described worm gear and described inner walls.
6. the transmission device of rotary table according to claim 5, is characterized in that, comprising:
Be arranged at the swelling element between described worm gear and described axle portion.
7. for the drive system of rotary table, it is characterized in that, comprising:
Transmission device according to any one of claim 1 ~ 6; And
There is the drive unit for the output shaft be connected with described worm screw.
8. the drive system for rotary table according to claim 7, is characterized in that:
Second end of described worm screw has the hole that can hold described output shaft;
Swelling element is provided with between described output shaft and described hole.
9. rotary table, is characterized in that, comprising:
For carrying the pedestal of workbench; And
Be fixed on the transmission device according to any one of claim 1 ~ 6 of described pedestal; Or
As claim 7 or drive system according to claim 8.
10. rotary table according to claim 9, is characterized in that, comprising:
The cross section be arranged on described pedestal is roughly
the block of shape, forms spatial accommodation between described block and described pedestal;
The installing plate of the strip that middle part is fixedly connected with described housing, described installing plate stiff end is fixed on described pedestal, and the free end of described installing plate is positioned at described spatial accommodation;
Be arranged at the elasticity extrusion element for extruding described installing plate free end on described block, described elasticity extrusion element by controlling the position of installing plate free end, can remain engagement to make described gear ring and described gear.
11. rotary tables according to claim 10, is characterized in that:
The free end of described installing plate is arranged the first through hole;
The vertical end of described block arranges the screwed hole be interconnected and the second through hole, and the diameter of described second through hole is greater than the diameter of described first through hole and the diameter of described screwed hole;
Described extrusion element has the end of mating with described first through hole and the afterbody mated with described screwed hole;
Also comprise:
Be arranged at the end of described extrusion element and be positioned at the butterfly spring sheet of described second through hole, the diameter of described butterfly spring sheet is suitable with the diameter of described second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021225.4A CN105458747B (en) | 2016-01-13 | 2016-01-13 | rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021225.4A CN105458747B (en) | 2016-01-13 | 2016-01-13 | rotary table |
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|---|---|
| CN105458747A true CN105458747A (en) | 2016-04-06 |
| CN105458747B CN105458747B (en) | 2018-03-27 |
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| CN201610021225.4A Active CN105458747B (en) | 2016-01-13 | 2016-01-13 | rotary table |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944643A (en) * | 2017-05-10 | 2017-07-14 | 苏州宝罗机械工程有限公司 | Automatic precision rig |
| CN108223697A (en) * | 2016-12-22 | 2018-06-29 | 江阴凯迈机械有限公司 | Gradual changing tooth thickness adjustable accuracy formula device for revolving and driving |
| CN111890068A (en) * | 2020-07-16 | 2020-11-06 | 沈机集团昆明机床股份有限公司 | Workbench exchange device for horizontal numerical control machine tool |
| CN112610658A (en) * | 2020-12-29 | 2021-04-06 | 齐重数控装备股份有限公司 | Method for adjusting meshing precision of precision transmission pair of large-scale double-drive static pressure rotary table |
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| CN106944643B (en) * | 2017-05-10 | 2018-11-23 | 苏州宝罗机械工程有限公司 | Automatic precision drilling machine |
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| CN112610658A (en) * | 2020-12-29 | 2021-04-06 | 齐重数控装备股份有限公司 | Method for adjusting meshing precision of precision transmission pair of large-scale double-drive static pressure rotary table |
| CN112610658B (en) * | 2020-12-29 | 2022-06-28 | 齐重数控装备股份有限公司 | Method for adjusting meshing precision of precision transmission pair of large-scale double-drive static pressure rotary table |
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