CN208487196U - A kind of device that can dynamically control gear backlash - Google Patents
A kind of device that can dynamically control gear backlash Download PDFInfo
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- CN208487196U CN208487196U CN201820987064.9U CN201820987064U CN208487196U CN 208487196 U CN208487196 U CN 208487196U CN 201820987064 U CN201820987064 U CN 201820987064U CN 208487196 U CN208487196 U CN 208487196U
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Abstract
The application proposes a kind of device that can dynamically control gear backlash.Chamber 1 and chamber 2 are equipped in device, for the installation of end cap end face there are two pipe fitting, high pressure oil can enter chamber 1 and chamber 2 by two pipe fittings respectively；When shaft is rotated clockwise by main motion, when chamber 1 fills high pressure oil, with increasing for oil liquid, successively pushing bearing holder (housing, cover), swivel nut and bearing and gear, shaft, small distance is mobile to the right, to make the engagement of main shaft gear wheel without sideshake；When shaft rotates counterclockwise, chamber 2 fills high pressure oil, with increasing for oil liquid, successively pushing bearing holder (housing, cover), swivel nut and bearing and gear, main shaft, small distance is moved to the left, so that gear wheel on shaft be made to engage without sideshake.Positioning accuracy and repetitive positioning accuracy when the application improves shaft positive and negative rotation；Gap-eliminating structure is reliable, realizes dynamic control without sideshake, adjusts simply, can be in important equipment；It is at low cost, material is used without special, is simple to manufacture simultaneously.
Description
Technical field
This application involves anti-backlash mechanism fields, and in particular to one kind can dynamically control the device of gear backlash.
Background technique
In engineering practice, the feed system of lathe need to be started often, stopped, reversely being exited, it is desirable that and movement is steady,
Accurate positioning, fast response characteristic is good, and in the normal state, all there is sideshake in gear pair engagement, directly make feeding and pass
Dynamic use can bring bigger opposite clearance error, lose the accuracy of feeding transmission, therefore to the links of transmission chain,
Especially gear pair should be using the structural measure for eliminating sideshake.
It is moved currently, the method that state's internal gear pair eliminates sideshake can be mainly summarized as center away from change null method and axial position
Dynamic null method.The former can reach elimination gear-pair backlash mesh such as excentric sleeve adjusting method, the latter's such as taper gear adjusting method
's.The common disadvantage of the two is the abrasion with the flank of tooth in the process of running, and gear-pair backlash becomes larger, and causes operating system precision
It reduces, fast reaction characteristic difference etc. drawback can not achieve dynamic control.
There is an urgent need to a kind of anti-backlash mechanisms in market: first is that reliable and stable；Second is that easy to adjust；Three, which can be achieved on dynamic, controls
System.
Summary of the invention
The application proposes a kind of device that can dynamically control gear backlash, by hydraulic cylinder by two oppositely oriented helical gears
The extraneous pressure for applying a different directions, make gear teeth face positive and negative rotation all can intimate contact, in transmission eliminate gear nibble
Gap is closed, guarantees the running precision of shaft.
The application proposes a kind of device that can dynamically control gear backlash, is made of two drive lines, and right side is main transmission,
It is responsible for the torque of the entire transmission system of transmitting；Left side is reverse anti-backlash transmission, does not transmit torque；
Chamber 1 and chamber 2 are equipped in described device, the chamber 1 and chamber 2 are covered by final quotaion to be formed with end cap, bearing holder (housing, cover)；The end cap
There are two pipe fitting, high pressure oil can enter chamber 1 and chamber 2 by two pipe fittings respectively for end face installation；
It,, will successively with increasing for oil liquid when chamber 1 fills high pressure oil when shaft is rotated clockwise by main motion
Pushing bearing holder (housing, cover), swivel nut and bearing and gear, shaft, small distance is mobile to the right, to make the engagement of main shaft gear wheel without sideshake；
When chamber 2 fills high pressure oil when shaft rotates counterclockwise, with increasing for oil liquid, bearing will be successively pushed
Small distance moves to the left for set, swivel nut and bearing and gear, main shaft, so that gear wheel on shaft be made to engage without sideshake.
Further, described device gear and shaft gear are the different helical gear of left and right rotation direction, and gear passes through interior
Engagement involute spline and splined shaft realization operate synchronously；The modulus of its middle gear is the half of shaft gear out, and the number of teeth is
2 times of the shaft gear number of teeth, guarantee that two pitch circles are identical and the axial force counteracting generated when engaging is 0.
Further, the end cap and final quotaion set faying face are equipped with O-ring, bearing holder (housing, cover) and end cap and the knot with final quotaion set
Conjunction face is equipped with oil seal without framework, and bearing holder (housing, cover) outer diameter is equipped with hole Glais ring, to prevent the leakage of high-voltage oil liquid.
Further, consider the composite factors such as gear engagement dislocation, gear liquid cylinder pressure stroke is designed as 3-5mm.
The beneficial effect that the application reaches is: (1) improving the positioning accuracy and repetitive positioning accuracy when shaft positive and negative rotation；
(2) gap-eliminating structure is reliable, realizes dynamic control without sideshake, adjusts simply, can be in important equipment；(3) at
This is low, uses material without special, is simple to manufacture simultaneously.
Detailed description of the invention
Fig. 1 is the transmission schematic diagram for the device that one kind can dynamically control gear backlash.
Fig. 2 is the main axle structure schematic diagram for the device that one kind can dynamically control gear backlash.
Wherein, 1- gear, 2- final quotaion set, 3-O type circle, 4- pipe fitting, 5- end cap, 6- bearing, 7- swivel nut, the shaft end 8- gear
Circle, 9- limit screw, the hole 10- Glais ring, 11- pipe fitting, 12- oil seal without framework, 13- bearing holder (housing, cover), 14- shaft, 15- spline
Axis.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings of the specification.
A kind of device that can dynamically control gear backlash, transmission schematic diagram is as shown in Figure 1:
Described device is made of 2 drive lines, and one, right side drive line is main transmission, is responsible for the entire transmission system of transmitting
Torque；One, left side drive line is reverse anti-backlash transmission, does not transmit torque, and II axis and III axis gear are all that transition is matched with axis
It closing, inner hole is equipped with copper sheathing, and no key etc. transmits the connection of torque, it is responsible for the gap effect that disappears of gear pair when feed system reversely exits,
The fast response characteristic of guarantee system.
In transmission system, serve the gap that disappears mainly shaft high-pressure and hydraulic cylinder structure, its working principle be by
Two oppositely oriented helical gears are applied the extraneous pressure of a different directions by hydraulic cylinder, make gear teeth face positive and negative rotation all can nothing
Gap-contact eliminates gear backlash in transmission, guarantees the running precision of shaft.
Described device gear 1 and 14 gear of shaft are the different helical gear of left and right rotation direction, and gear 1 passes through internal messing gradually
Burst at the seams spline and splined shaft 15 realization operate synchronously；The modulus of its middle gear 1 is the half of shaft gear out, and the number of teeth is shaft tooth
2 times of tooth number, guarantee that two pitch circles are identical and the axial force counteracting generated when engaging is 0.
The final quotaion set 2 forms chamber 1 and chamber 2 with end cap 5, bearing holder (housing, cover) 13；Pipe fitting 4 and 11 is mounted on 5 end face of end cap, high
Pressure oil can lead to chamber 1 and chamber 2 respectively；When shaft is rotated clockwise by main motion, when chamber 1 fills high pressure oil, with
Oil liquid increases, and successively pushing bearing holder (housing, cover) 14, swivel nut 7 and bearing 6 and gear 1, shaft 14, small distance is mobile to the right, thus
Make the engagement of main shaft gear wheel without sideshake；When shaft rotates counterclockwise, chamber 2 fills high pressure oil, with increasing for oil liquid,
Bearing holder (housing, cover) 14, swivel nut 7 and bearing 6 and gear 1, main shaft 14 will successively be pushed, and small distance moves to the left, to make big on shaft
Gear is engaged without sideshake.
The end cap 5 and final quotaion cover 2 faying faces and are equipped with O-ring, bearing holder (housing, cover) 13 and end cap 5 and the faying face with final quotaion set
Equipped with oil seal without framework 12,13 outer diameter of bearing holder (housing, cover) is equipped with hole Glais ring 10, to prevent the leakage of high-voltage oil liquid.
Consider the composite factors such as gear engagement dislocation, gear liquid cylinder pressure stroke is designed as 3-5mm.
The foregoing is merely better embodiment of the invention, protection scope of the present invention is not with above embodiment
Limit, as long as those of ordinary skill in the art's equivalent modification according to made by the utility model disclosure or variation, should all receive
Enter in the protection scope recorded in claims.
Claims (4)
1. the device that one kind can dynamically control gear backlash, it is characterised in that: described device is made of two drive lines, and right side is
The torque of the entire transmission system of transmitting is responsible in main transmission；Left side is reverse anti-backlash transmission, does not transmit torque；It is set in described device
There are chamber 1 and chamber 2, the chamber 1 and chamber 2 are covered by final quotaion to be formed with end cap, bearing holder (housing, cover)；The end cap end face installation connects there are two pipe
Head, high pressure oil can enter chamber 1 and chamber 2 by two pipe fittings respectively；When shaft is rotated clockwise by main motion, chamber
1 when filling high pressure oil, with increasing for oil liquid, will successively push bearing holder (housing, cover), swivel nut and bearing and gear, shaft narrow spacing to the right
From movement, to make the engagement of main shaft gear wheel without sideshake；When shaft rotates counterclockwise, chamber 2 fills high pressure oil, with
Oil liquid increases, and successively pushing bearing holder (housing, cover), swivel nut and bearing and gear, main shaft, small distance moves to the left, to make shaft
Upper gear wheel engagement is without sideshake.
2. the device that one kind according to claim 1 can dynamically control gear backlash, it is characterised in that: tooth in described device
Wheel and shaft gear are the different helical gear of left and right rotation direction, and gear is realized together by internal messing involute spline and splined shaft
Step operating；The modulus of its middle gear is the half of shaft gear out, and the number of teeth is 2 times of shaft number of gear teeth, guarantees two pitch circles
It is 0 that the axial force generated when identical and engagement, which is offset,.
3. the device that one kind according to claim 1 can dynamically control gear backlash, it is characterised in that: the end cap and tail
Disk covers faying face and is equipped with O-ring, bearing holder (housing, cover) and end cap and is equipped with oil seal without framework, bearing holder (housing, cover) outer diameter with the faying face of final quotaion set
It is equipped with hole Glais ring, to prevent the leakage of high-voltage oil liquid.
4. the device that one kind according to claim 1 can dynamically control gear backlash, it is characterised in that: consider gear engagement
The composite factors such as dislocation, are designed as 3-5mm for gear liquid cylinder pressure stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820987064.9U CN208487196U (en) | 2018-06-26 | 2018-06-26 | A kind of device that can dynamically control gear backlash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820987064.9U CN208487196U (en) | 2018-06-26 | 2018-06-26 | A kind of device that can dynamically control gear backlash |
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| Publication Number | Publication Date |
|---|---|
| CN208487196U true CN208487196U (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820987064.9U Active CN208487196U (en) | 2018-06-26 | 2018-06-26 | A kind of device that can dynamically control gear backlash |
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| CN (1) | CN208487196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488370A (en) * | 2018-06-26 | 2018-09-04 | 江苏国茂减速机股份有限公司 | It is a kind of can dynamic control gear backlash device |
-
2018
- 2018-06-26 CN CN201820987064.9U patent/CN208487196U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488370A (en) * | 2018-06-26 | 2018-09-04 | 江苏国茂减速机股份有限公司 | It is a kind of can dynamic control gear backlash device |
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