CN207189273U - A kind of gear rack anti-backlash structure - Google Patents
A kind of gear rack anti-backlash structure Download PDFInfo
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- CN207189273U CN207189273U CN201721133883.9U CN201721133883U CN207189273U CN 207189273 U CN207189273 U CN 207189273U CN 201721133883 U CN201721133883 U CN 201721133883U CN 207189273 U CN207189273 U CN 207189273U
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Abstract
The utility model discloses a kind of gear rack anti-backlash structure, include base and the column being arranged on base, crossbeam is provided with the top of column, it is movable on crossbeam to be provided with main spindle box slide, main spindle box is connected with main spindle box slide, for column by column lower slider and the movable connection of base, the junction of column lower slider and base is provided with double reductor Double-gear anti-backlash mechanisms.Bevel gear reducer and planetary reducer are connected by designing speed reducer connecting seat, first output gear and the second output gear are connected on two planetary reducers, the output input shaft that two bevel gear reducers are rotated by opposite direction produces a preload force, so that the first output gear and the second output gear press close to rack from opposite direction respectively, so as to largely eliminate gap, meet the requirement of high-precision machining tool, after rack-and-pinion wearing clearance becomes greatly, a preload force only need to be readjusted, gap can be eliminated again, maintenance cost is low.
Description
Technical field
Digit Control Machine Tool equipment technical field is the utility model is related to, more particularly, to a kind of gear rack anti-backlash structure.
Background technology
Electricity is with the development of science and technology, Numeric Control Technology is widely used, and technical field constantly improves, in digital control processing
The high-efficiency automatic lathe suitable for processed complex part that the heart is made up of plant equipment and digital control system.In digital control processing
The heart is current one of yield highest, most widely used Digit Control Machine Tool in the world.Its comprehensive process ability is stronger, and workpiece is once
More processing content can be completed after clamping, machining accuracy is higher, and with regard to the batch workpiece of medium difficulty of processing, its efficiency is common
5~10 times of equipment, the processing that many conventional equipments can not be completed can be completed by being particularly it, required precision more complicated to shape
High single-piece work or small batch multi-item production is more applicable.Numerical control machining center is a kind of more full digital control processing of function
Lathe.It concentrates on the functions such as milling, boring, drilling, tapping and screw cutting in one equipment, makes it have a variety of works
Skill means.Machining center is provided with tool magazine, and the various cutters or cubing of varying number are deposited in tool magazine, in process by
Program is selected and changed automatically.This is it and CNC milling machine, the main distinction of numerical control borer.Especially for frock must be used
Ensure the workpiece of product quality and efficiency with special plane equipment.When this can be the development and substantial amounts of remodeling replacement saving of new product
Between and expense so that enterprise has stronger competitiveness.Machining center is often divided into vertical by main shaft in space state in which
Formula machining center and horizontal Machining centers, the main shaft of machining center are in the referred to as vertical machining centre of plumbness in space,
Main shaft is in the referred to as horizontal Machining centers of horizontality in space.Main shaft can make what is vertically and horizontally changed, referred to as vertical and horizontal
Machining center or five face machining centers, also referred to as Compositions of metal-working machines.By the quantity point of machining center column；There are open side type and twin columns
Formula (planer-type).
The traditional machine tool table feed kind of drive all uses ball-screw nut form, however as machine tool travel and bears
The increasing of load, it is high production cost to be present in manufacture large-scale over-long type leading screw, manufacturing cycle length, the factor such as cost of transportation height.
And long lead screw can be deformed due to focusing on middle part certainly in use, lead screw transmission precision is had a strong impact on, simultaneously
Caused centrifugal force can increase deflection in the rotary course of long lead screw, and mass unbalance caused by deflection causes speed can not
It is too high.
In view of this, Chinese utility model patent Application No. 201010532398.5 discloses one in 2011.04.13 days
Kind gantry structure vertical vehicle boring-mill conversion Compositions of metal-working machines, belongs to machine tool field.Slided by rotary table, Y-axis base, Y-axis
Plate, column, fixed cross beam, revolution crossbeam, X-axis slide plate, ram, tie-beam, upper clearance elimination gear, bull gear, positional cylinder, under disappear
Gantry milling-lathe machining center that gap gear, the gap that disappears servomotor, planetary reducer, gyroaxis, bearing group are formed passes through the gap machine that disappears
Structure will turn round 90 ° of crossbeam-rotating, so that it is boring-milling center that X-axis slide plate and ram, which are also rotated by 90 ° structure changes,.In the program
A kind of anti-backlash mechanism is disclosed, mainly drives a planetary reducer to be rotated using a servomotor in the program,
Drive a upper clearance elimination gear and lower clearance elimination gear to rotate by planetary reducer, then drive bull gear to be rotated again, by
Certain gap in planetary reducer inherently be present, when being engaged along with upper clearance elimination gear and lower clearance elimination gear with bull gear
In the presence of certain gap, so or the precision of lathe can be reduced, only meet the requirement that middle precision increases lathe, and the essence of lathe
Spend, the value of one Digit Control Machine Tool of large effect, China's lathe mainly produces the lathe of some low precision and middle precision at present,
High precision machine tool by American-European-Japanese monopolization, will realize intelligence manufacture 2025 for a long time, it is therefore necessary to provide a kind of high-precision numerical control
Machining tool.
Utility model content
Problem to be solved in the utility model be to provide it is a kind of it is simple in construction, reasonable in design, stability is high, process velocity
It hurry up, operating radius is big, operating noise is low and meets the gear rack anti-backlash structure of high-precision machining tool requirement.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of gear rack anti-backlash structure, bag
Base and the column being arranged on the base are included, is provided with crossbeam at the top of the column, it is movable on the crossbeam
Main spindle box slide is provided with, main spindle box is connected with the main spindle box slide, the column passes through column lower slider and institute
State the movable connection of base, the junction of the column lower slider and the base is provided with double reductor Double-gear anti-backlash machines
Structure, double reductor Double-gear anti-backlash mechanisms include motor and the motor cabinet being connected with the motor, the electricity
Be respectively arranged with first bevel gear reductor and second bevel gear reductor on the right side of support, the first bevel gear reductor and
The direction of rotation of the second bevel gear reductor is opposite, and the output shaft of the first bevel gear reductor is connected with
First planetary reducer, the output shaft of the second bevel gear reductor are connected with the second planetary reducer, and described first
The output shaft of planetary reducer is connected with the first output gear, and the output shaft of second planetary reducer is connected with
Second output gear, oilgear, the profit are equipped between first output gear and second output gear
Slip teeth wheel has been internally embedded oilgear axle, is provided with rack on the front side outer wall of the base, the rack simultaneously with institute
The first output gear, oilgear, the second output gear is stated to be meshed.
Preferably, above-mentioned a kind of gear rack anti-backlash structure, wherein the output shaft of the motor passes through first shaft coupling
It is detachably connected with the first bevel gear reductor, the first bevel gear reductor leads to the second bevel gear reductor
Second shaft coupling is crossed to be detachably connected.
Preferably, above-mentioned a kind of gear rack anti-backlash structure, wherein the first bevel gear reductor, second bevel gear
Reductor is connected by the first speed reducer connecting seat, the second speed reducer connecting seat with reductor installing plate respectively, the reductor
Installing plate is detachably connected by bolt and the column lower slider.
Preferably, above-mentioned a kind of gear rack anti-backlash structure, wherein being provided with the front side outer wall of the base some
Individual first slide rail, several the first sliding blocks are equipped with first slide rail, first sliding block passes through to be stood described in screw
Post lower slider is detachably connected.
Preferably, above-mentioned a kind of gear rack anti-backlash structure, wherein be provided with the top of the base several second
Slide rail, is equipped with several the second sliding blocks on second slide rail, second sliding block pass through screw with the column
Slide is detachably connected.
The utility model has the advantage that is with beneficial effect：Bevel gear reducer is connected by designing speed reducer connecting seat
With planetary reducer, the first output gear and the second output gear are connected on two planetary reducers, and two planets subtract
Fast machine directly connects into an entirety by reductor installing plate, and reductor installing plate is arranged on column lower slider, passed through
Opposite direction rotates two bevel gear reducer output input shafts and produces a preload force so that the first output gear and second
Output gear presses close to rack from opposite direction respectively, so as to largely eliminate gap, meets wanting for high-precision machining tool
Ask, gear rack anti-backlash can be achieved using simple assembly method, after rack-and-pinion wearing clearance becomes greatly, it is only necessary to again
A preload force is adjusted, gap can be eliminated again, simple in construction, maintenance cost is low.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the partial enlarged drawing at A in Fig. 1；
Fig. 3 is the explosive view of double reductor Double-gear anti-backlash mechanisms in the utility model；
Fig. 4 is the partial enlarged drawing at B in Fig. 3；
Fig. 5 is the partial enlarged drawing at C in Fig. 3；
Fig. 6 is the transmission principle figure of double reductor Double-gear anti-backlash mechanisms in the utility model；
Fig. 7 is the first output gear in the utility model, the schematic diagram of the second reverse stress of output gear wheel and rack.
In figure：1st, base；2nd, main spindle box；3rd, main spindle box slide；4th, crossbeam；5th, column；6th, column lower slider；7th, double decelerations
Machine Double-gear anti-backlash mechanism；71st, motor；72nd, motor cabinet；73rd, first shaft coupling；74th, second shaft coupling；75th, first bevel gear
Reductor；76th, second bevel gear reductor；77th, the first speed reducer connecting seat；78th, the second speed reducer connecting seat；79th, reductor
Installing plate；710th, the first planetary reducer；711st, the second planetary reducer；712nd, the first output gear；713rd, the second output gear
Wheel；714th, oilgear；715th, oilgear axle；716th, the first slide rail；717th, the first sliding block；718th, rack；719th, second slide
Rail；720th, the second sliding block.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out it is clear,
It is fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, a kind of gear rack anti-backlash structure, the column 5 for including base 1 and being arranged on base 1, stands
The top of post 5 is provided with crossbeam 4, movable on crossbeam 4 to be provided with main spindle box slide 3, and master is connected with main spindle box slide 3
Axle box 2, column 5 pass through column lower slider 6 and 1 movable connection of base.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the junction of column lower slider 6 and base 1 is provided with double reductors pair
Gear clearance elimination mechanism 7, double reductor Double-gear anti-backlash mechanisms 7 include motor 71 and the motor cabinet being connected with motor 71
72, the right side of motor cabinet 72 is respectively arranged with first bevel gear reductor 75 and second bevel gear reductor 76, motor 71 it is defeated
Shaft is detachably connected by first shaft coupling 73 and first bevel gear reductor 75, and first bevel gear reductor 75 and second is bored
Gear reduction unit 76 is detachably connected by second shaft coupling 74.First bevel gear reductor 75, second bevel gear reductor 76
It is connected respectively by the first speed reducer connecting seat 77, the second speed reducer connecting seat 78 with reductor installing plate 79, reductor installation
Plate 79 is detachably connected by bolt and column lower slider 6.First bevel gear reductor 75 and second bevel gear reductor 76
Direction of rotation is opposite, and the output shaft of first bevel gear reductor 75 is connected with the first planetary reducer 710, the second cone
The output shaft of gear reduction unit 76 is connected with the second planetary reducer 711, and the output shaft of the first planetary reducer 710 coordinates
It is connected with the first output gear 712, the output shaft of the second planetary reducer 711 is connected with the second output gear 713, and first
Oilgear 714 is equipped between the output gear 713 of output gear 712 and second, oilgear 714 has been internally embedded
Oilgear axle 715, is provided with rack 718 on the front side outer wall of base 1, rack 718 simultaneously with the first output gear 712, profit
Slip teeth wheel 714, the second output gear 713 are meshed.
As shown in figure 5, being provided with several first slide rails 716 on the front side outer wall of base 1, coordinate on the first slide rail 716
Several the first sliding blocks 717 are provided with, the first sliding block 717 is detachably connected by screw column lower slider 6.The top of base 1
Several the second slide rails 719 are provided with, several second sliding blocks 720, the second sliding block 720 are equipped with the second slide rail 719
It is detachably connected by screw and column lower slider 6.
As shown in Figure 6 and Figure 7, bevel gear reducer and planetary reducer are connected by designing speed reducer connecting seat, first
The output gear 713 of output gear 712 and second is connected on two planetary reducers, and two planetary reducers directly pass through
Reductor installing plate 79 connects into an entirety, and reductor installing plate 79 is arranged on column lower slider 6, passes through opposite direction
Two bevel gear reducer output input shafts of rotation produce a preload force so that the first output gear 712 and the second output
Gear 713 presses close to rack 718 from opposite direction respectively, so as to largely eliminate gap, meets high-precision machining tool
It is required that gear rack anti-backlash can be achieved using simple assembly method, after rack-and-pinion wearing clearance becomes greatly, it is only necessary to weight
A newly preload force of adjustment, can eliminate gap again, simple in construction, maintenance cost is low.
In description of the present utility model, it is to be understood that the indicating position such as term " on ", " under ", "left", "right" or
Position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplifies description,
Rather than the device or element of instruction or hint meaning must have specific orientation and specific azimuth configuration and operation,
It is thus impossible to it is interpreted as to limitation of the present utility model.In addition, " first ", " second " are merely due to describe purpose, and be not understood that
To indicate or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Therefore, define " first ",
One or more this feature can be expressed or be implicitly included to the feature of " second ".In description of the present utility model, unless
It is otherwise noted, " multiple " are meant that two or more.
, it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " installation "
" connected " " connection " etc. should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected with by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
One embodiment of the present utility model is described in detail above, but the content is only of the present utility model
Preferred embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.It is all to be made according to present utility model application scope
Equivalent change with improve etc., all should still belong within patent covering scope of the present utility model.
Claims (5)
1. a kind of gear rack anti-backlash structure, the column (5) for including base (1) and being arranged on the base (1) is described
It is provided with crossbeam (4) at the top of column (5), it is movable on the crossbeam (4) to be provided with main spindle box slide (3), the main spindle box
Main spindle box (2) is connected with slide (3), it is characterised in that：The column (5) passes through column lower slider (6) and the bottom
The junction of seat (1) movable connection, the column lower slider (6) and the base (1) is provided with double reductor Double-gears and disappeared
Gap mechanism (7), double reductor Double-gear anti-backlash mechanisms (7) include motor (71) and coordinated with the motor (71) and connect
The motor cabinet (72) connect, first bevel gear reductor (75) and second bevel gear are respectively arranged with the right side of the motor cabinet (72)
The direction of rotation of reductor (76), the first bevel gear reductor (75) and the second bevel gear reductor (76) is opposite
, the output shaft of the first bevel gear reductor (75) is connected with the first planetary reducer (710), the second cone tooth
The output shaft of wheel reductor (76) is connected with the second planetary reducer (711), first planetary reducer (710) it is defeated
Shaft is connected with the first output gear (712), and the output shaft of second planetary reducer (711) is connected with second
Output gear (713), lubrication is equipped between first output gear (712) and second output gear (713)
Gear (714), the oilgear (714) have been internally embedded oilgear axle (715), the front side outer wall of the base (1)
On be provided with rack (718), the rack (718) at the same with first output gear (712), oilgear (714), second
Output gear (713) is meshed.
A kind of 2. gear rack anti-backlash structure according to claim 1, it is characterised in that：The output shaft of the motor (71)
It is detachably connected by first shaft coupling (73) and the first bevel gear reductor (75), the first bevel gear reductor
(75) it is detachably connected with the second bevel gear reductor (76) by second shaft coupling (74).
A kind of 3. gear rack anti-backlash structure according to claim 1, it is characterised in that：The first bevel gear reductor
(75), second bevel gear reductor (76) respectively by the first speed reducer connecting seat (77), the second speed reducer connecting seat (78) with
Reductor installing plate (79) is connected, and the reductor installing plate (79) is detachably connected by bolt and the column lower slider (6)
Connect.
A kind of 4. gear rack anti-backlash structure according to claim 1, it is characterised in that：Outside the front side of the base (1)
Several the first slide rails (716) are provided with wall, several the first sliding blocks are equipped with first slide rail (716)
(717), first sliding block (717) is detachably connected by column lower slider (6) described in screw.
A kind of 5. gear rack anti-backlash structure according to claim 1, it is characterised in that：Set at the top of the base (1)
Several the second slide rails (719) are equipped with, several second sliding blocks (720) are equipped with second slide rail (719), it is described
Second sliding block (720) is detachably connected by screw and the column lower slider (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133883.9U CN207189273U (en) | 2017-09-06 | 2017-09-06 | A kind of gear rack anti-backlash structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133883.9U CN207189273U (en) | 2017-09-06 | 2017-09-06 | A kind of gear rack anti-backlash structure |
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| Publication Number | Publication Date |
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| CN207189273U true CN207189273U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721133883.9U Active CN207189273U (en) | 2017-09-06 | 2017-09-06 | A kind of gear rack anti-backlash structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511709A (en) * | 2017-09-06 | 2017-12-26 | 佛山市盈向精密机械科技有限公司 | A kind of gear rack anti-backlash structure |
-
2017
- 2017-09-06 CN CN201721133883.9U patent/CN207189273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511709A (en) * | 2017-09-06 | 2017-12-26 | 佛山市盈向精密机械科技有限公司 | A kind of gear rack anti-backlash structure |
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Effective date of registration: 20221028 Address after: 528200 No.1, Yinhai Avenue, Nanhai National Ecological Industry Demonstration Park, Danzao Town, Nanhai District, Foshan City, Guangdong Province (Workshop 18) (application for residence) Patentee after: Foshan Tongxiang Intelligent Equipment Co.,Ltd. Address before: 528216 No. 2 Self prepared Workshop, No. 18, Ecological Road, Nanhai National Ecological Industry Demonstration Park, Danzao Town, Foshan City, Guangdong Province Patentee before: FOSHAN YINGXIANG PRECISION MACHINERY TECHNOLOGY Co.,Ltd. |