CN105414995A - Transmission device, driving system adopting same as well as rotating table - Google Patents

Transmission device, driving system adopting same as well as rotating table Download PDF

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Publication number
CN105414995A
CN105414995A CN201511024393.0A CN201511024393A CN105414995A CN 105414995 A CN105414995 A CN 105414995A CN 201511024393 A CN201511024393 A CN 201511024393A CN 105414995 A CN105414995 A CN 105414995A
Authority
CN
China
Prior art keywords
gear
worm
worm shaft
housing
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201511024393.0A
Other languages
Chinese (zh)
Inventor
李坤
李建刚
金正�
杨树生
叶文俊
刘�东
何刘平
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenji Group Kunming Machine Tool Co Ltd filed Critical Shenji Group Kunming Machine Tool Co Ltd
Priority to CN201511024393.0A priority Critical patent/CN105414995A/en
Publication of CN105414995A publication Critical patent/CN105414995A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25Movable or adjustable work or tool supports
    • B23Q1/26Movable 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor

Abstract

The invention provides a transmission device used for a rotating table of a numerical control machine tool. The rotating table comprises a gear ring; the transmission device comprises a casing, a worm shaft, a first worm, a second worm, a first worm gear, a second worm gear, a first gear and a second gear, wherein the worm shaft is arranged in the casing and can move in the axial direction; the first worm is located in the casing and fixedly arranged on the worm shaft in a sleeving manner; the second worm is located in the casing and arranged on the worm shaft in a sleeving manner, can slide along the worm shaft and can rotate with the worm shaft. Besides, the invention further provides a driving device and the rotating table. The transmission device, the driving device and the rotating table are simple in structure; the worm shaft moves only under extrusion during operation, back clearance between the gears can be rapidly and conveniently eliminated through one-time clockwise rotation and one-time counterclockwise rotation of the table, the device is not required to be wholly dismounted, and time and labor are saved.

Description

Transmission device and adopt drive system and the rotary table of this transmission device
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.
Drive load-bearing mainly to comprise the two reductor of bi-motor in the mode of the medium-sized work table rotation of 5 ~ 20 tons to drive and the driving of single motor Double-gear reduction box.When using the two reductor of bi-motor to drive, need configuration two to overlap motor and corresponding electric power driving module, the high-accuracy low back clearance reductor of two covers, cost is higher.When using single motor Double-gear reduction box to drive, in order to amplify Motor torque, these needs of its transmission are enough large, can drive work table rotation.Therefore, Double-gear reduction box needs to adopt multiple stage gear reduction, and cause its complex structure, driving-chain is also relatively long.
Summary of the invention
In view of problems of the prior art, the invention provides a kind of transmission device of the rotary table for Digit Control Machine Tool, described rotary table has gear ring, and described transmission device comprises housing; Be arranged at the worm shaft in described housing, described worm shaft can along its axially-movable; Be positioned at described housing and be sheathed on the first worm screw of described worm shaft regularly; Be positioned at second worm screw being sheathed on described worm shaft of described housing, described second worm screw can slide along described worm shaft, and can in company with described worm shaft; To be fixedly arranged in described housing by the first axle and first worm gear that can mate with described first worm screw and being fixedly arranged in described housing and second worm gear that can mate with described second worm screw by the second axle; Be fixedly arranged at the first gear mated with described gear ring on described first axle and be fixedly arranged at and described second axle mates the second gear with described gear ring.
In certain embodiments of the present invention, described enclosure interior is formed for limiting the first spacing space of described second worm screw relative to described shell position, and described second worm screw is positioned at described first spacing space.
In the comparatively simple embodiment of one, the inwall of housing can form the first spacing space, and this kind of method to set up is comparatively simple, does not need other parts to be assisted.But the first spacing space requirement coupling that the second worm screw and inner walls are formed, need to change different housings for the second different worm screws, namely the shape of housing and the second worm screw is one to one.
In certain embodiments of the present invention, the transmission device of the described rotary table for Digit Control Machine Tool, comprises and is fixedly arranged at the first positioning sleeve in described housing, and described first positioning sleeve has the centre bore corresponding to the diameter of described worm shaft; Be fixedly arranged at the second positioning sleeve in described housing, described second positioning sleeve has the centre bore corresponding to the diameter of described worm shaft; Described first positioning sleeve and described second positioning sleeve coaxially arrange and have gap therebetween, to form the first spacing space; Described second worm screw is positioned at described first spacing space.
One comparatively preferred embodiment in, the inwall of housing no longer forms the first spacing space, but by arranging the first independent positioning sleeve and the second positioning sleeve forms the first spacing space.The advantage of this setup is, when adopting the second worm screw of different size, and can be according to specific needs, change the first positioning sleeve and the second positioning sleeve that match, whole housing need not be changed, only make the adjustment of local, can configuration needs be met, simple, cost-saving.
In certain embodiments of the present invention, the first end of described worm shaft is provided with flexible member.Described enclosure interior has the second spacing space for holding described first end.
In certain embodiments of the present invention, the second end of described worm shaft stretches out described housing; Also comprise: the stripper plate being arranged at described second end, described stripper plate has near the primary importance of outer wall of described housing and the second place of the outer wall away from described housing: when described stripper plate is positioned at primary importance, the flexible member being arranged at the first end of described worm shaft is in compressive state; When described stripper plate is positioned at the second place, the flexible member being arranged at the first end of described worm shaft is in relaxed state.
In order to make the first end of worm shaft in the second spacing space, small displacement can occur, be provided with flexible member in the front portion of first end.Flexible member to be in the second spacing space and to be resisted against on the inwall of housing.When needing the position of adjustment first gear, the second gear and gear ring, promoting by stripper plate the flexible member that worm shaft extrudes its end, just can eliminate the back clearance between gear.
In certain embodiments of the present invention, described second internal fixtion ground, spacing space arranges and has the disc spring with the diameter same apertures of the first end of described worm shaft.
In certain embodiments of the present invention, described first gear and described second gear all have taper hole, and are individually fixed in described first axle and described second axle by taper pin.
In certain embodiments of the present invention, described first axle and described second axle are stretched out by described housing; Described first gear and described second gear are positioned at the outside of described housing.
Those skilled in the art should understand, when adjusting the back clearance of the first gear, the second gear and gear ring respectively, whether closely fit for the ease of observing the right flank of tooth of the second gear and the left surface of the tooth of gear ring in operating process, and first gear the left surface of tooth and the right flank of the tooth of gear ring whether closely fit, thus the first gear and the second gear are arranged at the outside of housing, can provide convenience for operator.In addition, also maintenance maintenance is beneficial to.
In addition, present invention also offers a kind of drive system of the rotary table for Digit Control Machine Tool, it is characterized in that, comprising: foregoing transmission device; And the drive unit to associate with the worm shaft of described transmission device.
Moreover, present invention also offers a kind of rotary table for Digit Control Machine Tool, it is characterized in that, comprising: foregoing drive system; And there is the workbench of the gear ring matched with described first gear and the second gear.
Transmission device provided by the invention, adopt the transmission structures of the drive system of this transmission device and rotary table simple.Make it be moved only by extruding worm shaft during operation, and workbench is once turned clockwise and is once rotated counterclockwise the back clearance just can eliminated fast, easily between gear.In the process eliminating back clearance, operator can pass through the dynamics of the first gear, the second gear and gear ring clamping, judges whether it fits enough tight, does not need whole device to disassemble, time saving and energy saving.
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 structural representation of the drive system of an embodiment of the present invention;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the structural representation of A-A hatching in Fig. 2;
Fig. 4 show schematically show the matching relationship of gear ring, the first gear, the second gear.
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.
Shown in seeing figures.1.and.2, present embodiments provide a kind of transmission device of the rotary table for Digit Control Machine Tool, it comprises housing 1, worm shaft 2, first worm screw 3, second worm screw 4, the first worm gear 6 and the first gear 7 be arranged on the first axle 5, is arranged at the second worm gear 9 and the second gear 10 on the second axle 8.
The first end of worm shaft 2 is arranged at housing 1 inside, and the second end is stretched out by housing 1.First worm screw 3 can be sleeved on worm shaft 2, and fixes relative to worm shaft 2, and its fixed form can adopt pin to connect.Second worm screw 4 can be sleeved on worm shaft 2, and it can slide within the specific limits along the axis of worm shaft 2, and can rotate along with worm shaft 2.The fixed form of the second worm screw 4 can adopt flat key to connect, and namely worm shaft 2 arranges projection, and the outer wall of the second worm screw 4 offers the groove mated with projection.Or worm shaft 2 is provided with groove, the outer wall of the second worm screw 4 is arranged the projection with described matching grooves.Flat key coordinates and belongs to conventional means, not shown in figures.
Therefore, when worm shaft 2 moves along the left and right directions in Fig. 2, if the second worm screw 4 is fixed relative to the position of housing 1, so the second worm screw 4 still can be moved on worm shaft 2 by the mode of sliding.First worm screw 3 is different from the second worm screw 4, and it can be followed worm shaft 2 and move in the same way.
Specifically, the first spacing space 1-1 for limiting the second worm screw 4 side-to-side movement and the second spacing space 1-2 for the end that holds worm shaft 2 can be formed in the inside of housing 1.
First spacing space 1-1 and the second spacing space 1-2 extends to form by the inwall of housing 1.One end that worm shaft 2 enters the second spacing space 1-2 is provided with flexible member 15, such as spring.Therefore, when the other end of worm shaft 2 is squeezed, worm shaft 2 is to left movement.Now, the first worm screw 3 is with worm shaft 2 to left movement, and the second worm screw 4 is under the restriction of the first spacing space 1-1, relative to the invariant position of housing 1, to have slided a segment distance relative to worm shaft 2.
In another kind of embodiment, the first spacing space 1-1 can be arranged at the first positioning sleeve 12 of housing 1 inside by compartment of terrain and the second positioning sleeve 13 is formed.First positioning sleeve 12 and the second positioning sleeve 13 are fixedly arranged at the inwall of housing 1, and the first positioning sleeve 12 and the second positioning sleeve 13 all have the centre bore matched with the diameter of worm shaft 2.First positioning sleeve 12, second positioning sleeve 13 is coaxially arranged, and is in sustained height with the second spacing space 1-2.
Therefore, when worm shaft 2 is successively through the first positioning sleeve 12, second positioning sleeve 13 and when entering the second spacing space 1-2, be sheathed in the second worm screw 4 on worm shaft 2 the first spacing space 1-1 just in time between the first positioning sleeve 12 and the second positioning sleeve 13.
In another kind of embodiment, in order to strengthen elastic force, the disc spring 14 with the centre bore corresponding to the diameter of described worm shaft 2 is also set in the second spacing space 1-2, during to make worm shaft 2 to left movement, the left-hand face of the first worm screw 3 can extrude disc spring 14, and disc spring 14 produces deformation under the extruding of the first worm screw 3.In the present embodiment, disc spring can produce the axial force of 20kN.
In another kind of embodiment, one end of worm shaft 2 is arranged in the second spacing space 1-2, and the other end is stretched out by housing 2.Stripper plate 16 (cover plate) is sheathed on the other end of worm shaft 2 regularly, and by screw-driving on the outer wall of housing 1.Should be appreciated that when screw be screwed into housing 1 more shallow time, stripper plate 16 is slightly away from the outer wall of described housing 1, and flexible member 15 and the disc spring 14 of worm shaft 2 end are in relaxed state.When screw be screwed into housing 1 darker time, stripper plate 16 is slightly near the outer wall of described housing 1, and flexible member 15 and the disc spring 14 of worm shaft 2 end are in compressive state.More preferred, the other end of worm shaft 2 has hierarchic structure, and sets gradually plain thrust bearing 17 and angular contact bearing 18 on its thin axle, and arranges stripper plate 16 in outermost.When tightening the screw of stripper plate 16, stripper plate 16 moves towards the direction of housing 1, and it holds out against plain thrust bearing 17 and angular contact bearing 18, and promotes worm shaft 2 to left movement by the cascaded surface of worm shaft 2.
With reference to Fig. 2 and Fig. 3, the first axle 5 is fixedly arranged in housing 1.First axle 5 is provided with the first worm gear 6 and the first gear 7 regularly.Therefore, the first worm gear 6 and the first gear 7 are coaxial setting, when the first axle 5 rotates, and the first worm gear 6 and the first gear 7 synchronous axial system.First axle 5 can be independent parts, also can be a part for the first worm gear 6, and namely the first axle 5 can be extended to form by the surface of the first worm gear 6, and now the first gear 7 is installed on the first axle 5 of the first worm gear 6 regularly.
First gear 7 and the first axle 5 can adopt the mode of taper hole and taper pin to fix.
First worm gear 6 is corresponding with the first worm screw 3 position and mutually mate.Gear ring 11 position of the first gear 7 and rotary table is corresponding and mutually mate.
Position relationship and the set-up mode of the second axle 8, second worm gear 9 and the second gear 10 are identical with above-mentioned, repeat no more.Second worm gear 9 is corresponding with the second worm screw 4 position and mutually mate.Gear ring 11 position of the second gear 10 and rotary table is corresponding and mutually mate.
Therefore, when worm shaft 2 forward (clockwise) rotates, the first worm screw 3 and the second worm screw 4 rotate forward along with worm shaft 2.First worm gear 6 and the second worm gear 9 rotate forward, and then the first gear 7 and the second gear 10 rotate forward (clockwise), finally drive rotary table oppositely (counterclockwise) rotation.
When worm shaft 2 oppositely (counterclockwise) rotation, the first worm screw 3 and the second worm screw 4 rotate backward along with worm shaft 2.First worm gear 6 and the second worm gear 9 rotate backward, and then the first gear 7 and the second gear 10 rotate backward (counterclockwise), finally drive rotary table forward (clockwise) rotation.
In another kind of embodiment, in order to better be equipped with the gear ring 11 in rotary table bottom, first axle 5 and the second axle 8 can extend to the outside of housing 1, and the first gear 7 and the second gear 10 are fixedly arranged at the first axle 5 respectively and the second axle 8 is positioned in the part outside housing 1.
With reference to Fig. 2 and 4, gear back clearance eliminated in the following manner by the transmission device of the rotary table for Digit Control Machine Tool that the present embodiment soil provides:
1, be rotated counterclockwise rotary table, now the second gear 10 turns clockwise, and the left surface of the right flank of the tooth of the second gear 10 and the tooth of gear ring 11 stops after closely fitting.
2, by screw-driving stripper plate 16, worm shaft 2 is squeezed backward left movement, now, first worm screw 3 is along with worm shaft 2 is to left movement, second worm screw 4 is subject to the restriction of the second spacing space 1-2, slide along worm shaft 2, namely the second worm screw 4 does not change relative to the position of housing 1.
3, turn clockwise rotary table, and now the first gear 9 is rotated counterclockwise, until the right flank of the tooth of the left surface of its tooth and gear ring 11 stops after closely fitting.
In addition, an embodiment of the invention additionally provide the drive system of planting for the rotary table of Digit Control Machine Tool, comprise transmission device as above and drive unit 20.Described drive unit 20 can for being fixedly arranged at the motor of described hull outside or inside, and the output shaft of described motor and the worm shaft 2 of described transmission device are associated by synchronous cog belt 19.
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 (10)

1., for a transmission device for the rotary table of Digit Control Machine Tool, described rotary table has gear ring, it is characterized in that, comprising:
Housing;
Be arranged at the worm shaft in described housing, described worm shaft can along its axially-movable;
Be positioned at described housing and be sheathed on the first worm screw of described worm shaft regularly;
Be positioned at second worm screw being sheathed on described worm shaft of described housing, described second worm screw can slide along described worm shaft, and can in company with described worm shaft;
To be fixedly arranged in described housing by the first axle and first worm gear that can mate with described first worm screw and being fixedly arranged in described housing and second worm gear that can mate with described second worm screw by the second axle;
Be fixedly arranged at the first gear mated with described gear ring on described first axle and be fixedly arranged at and described second axle mates the second gear with described gear ring.
2. the transmission device of the rotary table for Digit Control Machine Tool according to claim 1, is characterized in that:
Described enclosure interior is formed for limiting the first spacing space of described second worm screw relative to described shell position, and described second worm screw is positioned at described first spacing space.
3. the transmission device of the rotary table for Digit Control Machine Tool according to claim 1, is characterized in that, comprising:
Be fixedly arranged at the first positioning sleeve in described housing, described first positioning sleeve has the centre bore corresponding to the diameter of described worm shaft;
Be fixedly arranged at the second positioning sleeve in described housing, described second positioning sleeve has the centre bore corresponding to the diameter of described worm shaft;
Described first positioning sleeve and described second positioning sleeve coaxially arrange and have gap therebetween, to form the first spacing space;
Described second worm screw is positioned at described first spacing space.
4. the transmission device of the rotary table for Digit Control Machine Tool according to Claims 2 or 3, is characterized in that:
The first end of described worm shaft is provided with flexible member;
Described enclosure interior has the second spacing space for holding described first end.
5. the transmission device of the rotary table for Digit Control Machine Tool according to claim 4, is characterized in that, the second end of described worm shaft stretches out described housing; Also comprise:
Be arranged at the stripper plate of described second end, described stripper plate has near the primary importance of outer wall of described housing and the second place of the outer wall away from described housing:
When described stripper plate is positioned at primary importance, the flexible member being arranged at the first end of described worm shaft is in compressive state;
When described stripper plate is positioned at the second place, the flexible member being arranged at the first end of described worm shaft is in relaxed state.
6. the transmission device of the rotary table for Digit Control Machine Tool according to claim 5, is characterized in that:
Described second internal fixtion ground, spacing space is arranged has the disc spring with the diameter same apertures of the first end of described worm shaft.
7. the transmission device of the rotary table for Digit Control Machine Tool according to claim 1, is characterized in that:
Described first gear and described second gear all have taper hole, and are individually fixed in described first axle and described second axle by taper pin.
8. the transmission device of the rotary table for Digit Control Machine Tool according to claim 7, is characterized in that:
Described first axle and described second axle are stretched out by described housing;
Described first gear and described second gear are positioned at the outside of described housing.
9. for a drive system for the rotary table of Digit Control Machine Tool, it is characterized in that, comprising:
Transmission device according to any one of claim 1 ~ 8; And
The drive unit associated with the worm shaft of described transmission device.
10. for a rotary table for Digit Control Machine Tool, it is characterized in that, comprising:
Drive system as claimed in claim 9; And
There is the workbench of the gear ring matched with described first gear and the second gear.
CN201511024393.0A 2015-12-30 2015-12-30 Transmission device, driving system adopting same as well as rotating table Pending CN105414995A (en)

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Application Number Priority Date Filing Date Title
CN201511024393.0A CN105414995A (en) 2015-12-30 2015-12-30 Transmission device, driving system adopting same as well as rotating table

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CN110273977A (en) * 2019-05-14 2019-09-24 广州市昊志机电股份有限公司 A kind of twin worm is from anti-backlash mechanism

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