CN201992029U - Gear rack anti-backlash adjusting mechanism - Google Patents
Gear rack anti-backlash adjusting mechanism Download PDFInfo
- Publication number
- CN201992029U CN201992029U CN2011201430812U CN201120143081U CN201992029U CN 201992029 U CN201992029 U CN 201992029U CN 2011201430812 U CN2011201430812 U CN 2011201430812U CN 201120143081 U CN201120143081 U CN 201120143081U CN 201992029 U CN201992029 U CN 201992029U
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- China
- Prior art keywords
- eccentric sleeve
- eccentric bushing
- eccentric
- planetary gear
- gear box
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Abstract
A gear rack anti-backlash adjusting mechanism is mounted on a sliding seat arranged on one side of a machine tool beam, and comprises an eccentric sleeve, a planetary gear box, a planetary gear box positioning spigot and a gear. An eccentric positioning inner hole is arranged on the eccentric sleeve; eccentricity is reserved between the eccentric positioning inner hole and an outer circle of the eccentric sleeve; a plurality of kidney-shaped adjusting slots are evenly arranged along the periphery of the eccentric sleeve; the eccentric sleeve is fixed onto the sliding seat by a plurality of adjusting screws penetrating through the kidney-shaped adjusting slots; the planetary gear box is of a hollow flange shaft output type; an input end of the planetary gear box is connected with a servo motor; the planetary gear box positioning spigot is positioned in the positioning inner hole of the eccentric sleeve and connected with the eccentric sleeve by the aid of screws; and the gear is connected with an output flange end face of the planetary gear box and meshed with a rack arranged on one side of the beam. By the aid of the eccentric sleeve with the kidney-shaped adjusting slots, the planetary gear box arranged on the eccentric sleeve is matched with the gear, and micro-adjustment of the gear rack center distance is realized so that gear rack transmission is stable and precise.
Description
Technical field
The utility model relates to machine tool, particularly a kind of gear rack crack regulating mechanism that disappears.
Background technique
The gear rack transmission is used very extensive in the transmission device of lathe, and its effect mainly contains: change moving direction, deceleration, increase moment of torsion etc.For kinematic accuracy and the stable working that guarantees NC machine tool feed system, also must eliminate the drive gap between the gear rack as far as possible.But there are certain error in gear rack and corresponding fixed pedestal in reality processing and assembly process, directly clamping can not reach desired gear rack centre distance.In addition, because factors such as the service wear of gear rack and working environment variation also can cause the gear rack back lash to change.
At present, some gear rack transmission system adds spring mechanism and realizes the automatic adjustment in gear rack gap, but its stability and reliability are lower.
As end as described in the Chinese patent 200710300313.9 the eccentric outer shroud of bearing or the outer eccentric bushing structure of bearing of tooth embedding are arranged, it is level and smooth inadequately to the gear clearance adjustment, can not realize trace adjustment.The described elastic transmission wheel construction of Chinese patent 02263181.x, though the employing spring mechanism can be realized gear backlash and adjust automatically, but its pressure to gear (drawing) dynamics can be influenced behind the long-time pressurized of spring (drawing), so its reliability to gear backlash is not high.Place elastic element mechanism in the Chinese patent 200920353428.9 tooth bar adjustment holes, its complex structure, the manufacturing difficulty is big.
Summary of the invention
The purpose of this utility model is to design a kind of gear rack crack regulating mechanism that disappears, and can realize the trace adjustment of gear rack centre distance, and adjustment range is big; And the gear rack stable drive is accurate.
For achieving the above object, the technical solution of the utility model is:
A kind of gear rack crack regulating mechanism that disappears, be installed on the slide of being located at lathe crossbeam one side, it comprises, eccentric bushing, offer a location endoporus on it, the location endoporus is set for the eccentric, and has offset with the eccentric bushing cylindrical, evenly offer several waist shape regulating tanks along the eccentric bushing circumference, and pass waist shape regulating tank by some adjusting screw eccentric bushing is fixed on the described slide; Epicyclic gearbox, it is a flange hollow shaft output form, input end connects actuating motor; The epicyclic gearbox positioning spigot is positioned at the location endoporus of described eccentric bushing, and is connected with eccentric bushing by screw; Gear connects with the output flange end face of epicyclic gearbox, and meshes with the tooth bar that is located at crossbeam one side.
Further, establish 12 waist shape regulating tanks and corresponding adjusting screw on the described eccentric bushing.
Advantage of the present utility model is:
1) the utility model waist type regulating tank has certain-length, can realize the trace adjustment of gear rack centre distance, and adjustment range is big.
2) eccentric bushing is simple in structure, is fixed on the slide by a plurality of screws, and the reliability height makes the gear rack stable drive accurate.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Fig. 2 is for removing the assembling schematic representation of gear, eccentric bushing and epicyclic gearbox behind crossbeam and the slide among the utility model embodiment.
Fig. 3 is the schematic representation of eccentric bushing among the utility model embodiment.
Fig. 4 is the A-A sectional view of Fig. 3.
Embodiment
Referring to Fig. 1 ~ Fig. 4, the gear rack of the present utility model crack regulating mechanism that disappears, be installed on the slide 2 that is slidedly arranged on lathe crossbeam 1 one sides, it comprises, eccentric bushing 3 is offered a location endoporus 31 on it, the location endoporus is set for the eccentric, there is offset with the eccentric bushing cylindrical, evenly offers several waist shape regulating tanks 32, and pass waist shape regulating tank 32 by some adjusting screw 4 eccentric bushing 3 is fixed on the described slide 2 along the eccentric bushing circumference; Epicyclic gearbox 5, it is a flange hollow shaft output form, input end connects actuating motor 6; Epicyclic gearbox 5 positioning spigots are positioned at the location endoporus 31 of described eccentric bushing 3, and are connected with eccentric bushing 3 by screw 7; Gear 8 connects with the output flange end face of epicyclic gearbox, and meshes with the tooth bar 9 that is located at crossbeam 1 one sides.
Gear on epicyclic gearbox, guarantees that gear is concentric with epicyclic gearbox by screw, and forms meshing relation with the tooth bar that is fixed on the crossbeam.The positioning spigot of epicyclic gearbox and the endoporus of eccentric bushing are fixed on the eccentric bushing by the gear-box set screw, have a throw of eccentric a between the cylindrical gyration center of gear gyration center and eccentric bushing location like this.
Adjusting gear position during beginning guarantees that the gear rack gap is suitable, and makes adjusting screw be positioned at the regulating tank middle part as far as possible, can guarantee so no matter gear rack centre distance is excessive or too small, all can adjust.When the gear rack excesssive gap, unclamp the adjusting screw on the regulating tank this moment, and rotating eccentricity overlaps an amount of angle, and the gear gyration center changes thereupon, can realize the adjustment of gear rack back lash.
Claims (2)
1. gear rack crack regulating mechanism that disappears is installed on the slide of being located at lathe crossbeam one side, it is characterized in that, comprise,
Eccentric bushing, offer a location endoporus on it, the location endoporus is set for the eccentric, and has offset with the eccentric bushing cylindrical, evenly offer several waist shape regulating tanks along the eccentric bushing circumference, and pass waist shape regulating tank by some adjusting screw eccentric bushing is fixed on the described slide;
Epicyclic gearbox, it is a flange hollow shaft output form, input end connects actuating motor; The epicyclic gearbox positioning spigot is positioned at the location endoporus of described eccentric bushing, and is connected with eccentric bushing by screw;
Gear connects with the output flange end face of epicyclic gearbox, and meshes with the tooth bar that is located at crossbeam one side.
2. the gear rack as claimed in claim 1 crack regulating mechanism that disappears is characterized in that, establishes 12 waist shape regulating tanks and corresponding adjusting screw on the described eccentric bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201430812U CN201992029U (en) | 2011-05-09 | 2011-05-09 | Gear rack anti-backlash adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201430812U CN201992029U (en) | 2011-05-09 | 2011-05-09 | Gear rack anti-backlash adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201992029U true CN201992029U (en) | 2011-09-28 |
Family
ID=44668518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201430812U Expired - Fee Related CN201992029U (en) | 2011-05-09 | 2011-05-09 | Gear rack anti-backlash adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201992029U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425650A (en) * | 2011-11-14 | 2012-04-25 | 吴瑜华 | Gear and rack transmission device capable of eliminating wearing clearance |
| CN103307256A (en) * | 2012-03-07 | 2013-09-18 | 通快机床两合公司 | Mechanism for tooth clearance adjustment and linear actuation |
| CN103322159A (en) * | 2012-03-23 | 2013-09-25 | 邵文远 | Automatic anti-backlash gear rack transmission mechanism for numerical control engraving machine cutting machine |
| CN103939577A (en) * | 2014-04-11 | 2014-07-23 | 太原重工股份有限公司 | Backlash adjusting device and method of gear-rack transmission pair |
| CN108672952A (en) * | 2018-07-02 | 2018-10-19 | 中山市金智激光设备有限公司 | A kind of laser equipment that sheet is integrally cut with materials in the tube |
| CN108971769A (en) * | 2018-07-02 | 2018-12-11 | 中山市金智激光设备有限公司 | A kind of laser cutting device |
| CN108999954A (en) * | 2018-07-30 | 2018-12-14 | 黄炳康 | A kind of rack-and-pinion installation shell |
-
2011
- 2011-05-09 CN CN2011201430812U patent/CN201992029U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425650A (en) * | 2011-11-14 | 2012-04-25 | 吴瑜华 | Gear and rack transmission device capable of eliminating wearing clearance |
| CN102425650B (en) * | 2011-11-14 | 2014-08-13 | 吴瑜华 | Gear and rack transmission device capable of eliminating wearing clearance |
| CN103307256A (en) * | 2012-03-07 | 2013-09-18 | 通快机床两合公司 | Mechanism for tooth clearance adjustment and linear actuation |
| CN103322159A (en) * | 2012-03-23 | 2013-09-25 | 邵文远 | Automatic anti-backlash gear rack transmission mechanism for numerical control engraving machine cutting machine |
| CN103322159B (en) * | 2012-03-23 | 2016-03-09 | 邵文远 | Digital-controlled carving machine cutting machine automatic anti-backlash rack and pinion drive mechanism |
| CN103939577A (en) * | 2014-04-11 | 2014-07-23 | 太原重工股份有限公司 | Backlash adjusting device and method of gear-rack transmission pair |
| CN103939577B (en) * | 2014-04-11 | 2016-04-13 | 太原重工股份有限公司 | The lateral clearance adjusting device of rack pinion pair and method |
| CN108672952A (en) * | 2018-07-02 | 2018-10-19 | 中山市金智激光设备有限公司 | A kind of laser equipment that sheet is integrally cut with materials in the tube |
| CN108971769A (en) * | 2018-07-02 | 2018-12-11 | 中山市金智激光设备有限公司 | A kind of laser cutting device |
| CN108999954A (en) * | 2018-07-30 | 2018-12-14 | 黄炳康 | A kind of rack-and-pinion installation shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140509 |