CN201279699Y - Backlash apparatus for double-rack-and-pinion drive of numerical control machine - Google Patents
Backlash apparatus for double-rack-and-pinion drive of numerical control machine Download PDFInfo
- Publication number
- CN201279699Y CN201279699Y CNU2008200275714U CN200820027571U CN201279699Y CN 201279699 Y CN201279699 Y CN 201279699Y CN U2008200275714 U CNU2008200275714 U CN U2008200275714U CN 200820027571 U CN200820027571 U CN 200820027571U CN 201279699 Y CN201279699 Y CN 201279699Y
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- Prior art keywords
- gear
- gear shaft
- sleeve
- shaft
- geared sleeve
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- Gears, Cams (AREA)
Abstract
The utility model discloses a clearance elimination device for double rack-and-pinion transmission of a numerically-controlled machine tool. The device comprises a first gear shaft with a first gear sleeve and a first expansion sleeve, a second gear shaft with a second gear sleeve and a second expansion sleeve, a third gear shaft, a forth gear shaft, a first gear and a second gear which are meshed with each other, wherein, the first gear is mounted on the second gear shaft, and the second gear is mounted on the forth gear shaft; the first gear sleeve and the first gear shaft are meshed with the outer side of the first gear; the second gear sleeve and the second gear shaft are meshed with the outer side of the second gear; and pin holes are formed on both the first gear sleeve and the second gear sleeve. The utility model can eliminate opposite clearance during the reciprocating linear movement of the machine tool, thereby ensuring operating precision of the linear movement of the machine tool. Moreover, the utility model has the advantages of simple and compact structure, reasonable use of space, stable operation and less transmission noise, and can be widely applied to various numerically-controlled machine tools adopting the method of gear-and-rack-rod transmission.
Description
(1) technical field
The utility model relates to Digit Control Machine Tool parts technical field, particularly a kind of Digit Control Machine Tool bidentate wheel tooth bar transmission backlash eliminating equipment.
(2) background technology
In the linear axis transmission of Digit Control Machine Tool, when stroke is longer, generally all adopt the transmission of bidentate wheel tooth bar.Rack-and-pinion will run well, and must guarantee certain backlash.Therefore, when gear by being rotated in the forward when being changed to reverse rotation or gear is changed to by reverse rotation and is rotated in the forward, the certain angle that must dally earlier makes when its flank of tooth contacts with the tooth bar flank of tooth, could drive the tooth bar motion, thereby realizes the linear axis transmission of lathe.Because the existence of backlash, positioning accuracy in the time of certainly will having influence on the lathe counter motion and reverse error, and then have influence on the machining accuracy of lathe.
(3) summary of the invention
The technical problems to be solved in the utility model has provided a kind of Digit Control Machine Tool bidentate wheel tooth bar transmission backlash eliminating equipment, passes through rack-and-pinion transmission, the backlass when being used for eliminating the rack-and-pinion counter motion at each linear axis of Digit Control Machine Tool.
In order to solve the problems of the technologies described above, the utility model is realized by following measure: a kind of Digit Control Machine Tool bidentate wheel tooth bar transmission backlash eliminating equipment, comprise first gear shaft that has first geared sleeve and first expansion set, second gear shaft that has second geared sleeve and second expansion set, intermeshing the 3rd gear shaft, the 4th gear shaft, first gear and second gear; Described first gear is installed on described second gear shaft; Described second gear is installed on described the 4th gear shaft; Described first geared sleeve, first gear shaft are meshing with each other with described first gear outside respectively; Described second geared sleeve, second gear shaft are meshing with each other with described second gear outside respectively; Described first geared sleeve and second geared sleeve are equipped with pin-and-hole.
The beneficial effects of the utility model:
1. by having increased gear and tooth cover, eliminate the backlass of lathe linear reciprocating motion, to guarantee the straight-line running precision of lathe, simple and compact for structure, rationally utilize the space, operate steadily, the transmission noise is low, can be widely used in the Digit Control Machine Tool of all kinds of employing rack-and-pinion transmission.
2. adopt common structures such as gear and tooth cover, easily manufactured, with low cost, suitable applying.
(4) description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is for adjusting the mesh schematic representation of backgear tooth bar through backlash eliminating equipment.
1 first geared sleeve among the figure, 2 first gear shafts, 3 first gears, 4 second geared sleeves, 5 second expansion sets, 6 cover plates, 7 second gear shafts, 8 the 3rd gear shafts, 9 the 4th gear shafts, 10 second gears, 11 gears, 12 gear shafts, 13 original gear axles, 14 original gears, 15 tooth bars, 16 first expansion sets;
A second pin-and-hole, b first pin-and-hole.
(5) specific embodiment
A kind of Digit Control Machine Tool bidentate wheel tooth bar transmission backlash eliminating equipment as shown in Figure 1, comprise first gear shaft 2 that has first geared sleeve 1 and first expansion set 16, second gear shaft 7 that has second geared sleeve 4 and second expansion set 5, intermeshing the 3rd gear shaft 8, the 4th gear shaft 9, the first gears 3 and second gear 10; Described first gear 3 is installed on described second gear shaft 7; Described the two the first gears 3 are installed on described the 4th gear shaft 7; Described first geared sleeve 1, first gear shaft 2 are meshing with each other with described first gear 3 outsides respectively; Described second geared sleeve 4, second gear shaft 7 are meshing with each other with described second gear 10 outsides respectively; Described first geared sleeve 1 and second geared sleeve 4 are equipped with pin-and-hole.
During assembling, comprise following two steps:
1) earlier that first gear shaft 2 is fixing, it can not arbitrarily be rotated, adopt a straight pin to rotate then and drive 1 rotation of first geared sleeve at the first pin-and-hole b place, make the gear of first geared sleeve 1 and first gear shaft 2 certain angle that staggers, mesh with the tooth outside of first gear 3 respectively, after mixing up, tighten the bolt of first expansion set 16, first geared sleeve 1 and first gear shaft 2 are connected one.
2) gear shaft 7 is fixing, it can not arbitrarily be rotated, adopt a straight pin to rotate then and drive 4 rotations of second geared sleeve at the second pin-and-hole a place, make the gear of second geared sleeve 4 and second gear shaft 7 certain angle that staggers, mesh with the tooth outside of second gear 10 respectively, after mixing up, tighten the bolt of second expansion set 5, second geared sleeve 4 and second gear shaft 7 are connected one, and cover plate 6 are installed in second gear shaft, 7 ends.
3) the 3rd gear shaft 8, the four gear shafts 9, the second gears 10 are installed, the gear shaft 9 and the gear 11 of Digit Control Machine Tool are meshed.
Second geared sleeve 4 reaches tooth bar 15, the second gear shafts 7 by second gear, 10-the four gear shaft 9-gear 11-gear shaft 12 with power and by second gear, 10-the three gear shaft 8-original gear, 14-original gear axle 13 power is reached tooth bar 15 during work.
As shown in Figure 2, through illustrated case occurring after the backlash eliminating equipment adjustment, mesh with tooth bar 15 respectively in the outside of gear shaft 12 and original gear axle 13.During positive movement, gear shaft 12 is a driving wheel, drives tooth bar 15 motions, and gear shaft 13 is a driven pulley; During counter motion, gear shaft 13 is a driving wheel, drives tooth bar 15 motions, and gear shaft 12 is a driven pulley.
Claims (1)
1. a Digit Control Machine Tool bidentate is taken turns tooth bar transmission backlash eliminating equipment, it is characterized in that: comprise first gear shaft (2) that has first geared sleeve (1) and first expansion set (16), second gear shaft (7) that has second geared sleeve (4) and second expansion set (5), intermeshing the 3rd gear shaft (8), the 4th gear shaft (9), first gear (3) and second gear (10); Described first gear (3) is installed on described second gear shaft (7); Described second gear (3) is installed on described the 4th gear shaft (7); Described first geared sleeve (1), first gear shaft (2) are meshing with each other with described first gear (3) outside respectively; Described second geared sleeve (4), second gear shaft (7) are meshing with each other with described second gear (10) outside respectively; Described first geared sleeve (1) and second geared sleeve (4) are equipped with pin-and-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200275714U CN201279699Y (en) | 2008-09-05 | 2008-09-05 | Backlash apparatus for double-rack-and-pinion drive of numerical control machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200275714U CN201279699Y (en) | 2008-09-05 | 2008-09-05 | Backlash apparatus for double-rack-and-pinion drive of numerical control machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201279699Y true CN201279699Y (en) | 2009-07-29 |
Family
ID=40926588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200275714U Expired - Fee Related CN201279699Y (en) | 2008-09-05 | 2008-09-05 | Backlash apparatus for double-rack-and-pinion drive of numerical control machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201279699Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8511192B2 (en) | 2010-03-29 | 2013-08-20 | Hitec Luxembourg S.A. | System and method of positional control with backlash compensation |
| CN103753333A (en) * | 2013-11-28 | 2014-04-30 | 芜湖恒升重型机床股份有限公司 | Backlash Elimination Structure of Gear Transmission Mechanism |
-
2008
- 2008-09-05 CN CNU2008200275714U patent/CN201279699Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8511192B2 (en) | 2010-03-29 | 2013-08-20 | Hitec Luxembourg S.A. | System and method of positional control with backlash compensation |
| CN103753333A (en) * | 2013-11-28 | 2014-04-30 | 芜湖恒升重型机床股份有限公司 | Backlash Elimination Structure of Gear Transmission Mechanism |
| CN105108554A (en) * | 2013-11-28 | 2015-12-02 | 芜湖恒升重型机床股份有限公司 | Backlash Elimination Structure of Gear Transmission Mechanism |
| CN103753333B (en) * | 2013-11-28 | 2016-02-24 | 芜湖恒升重型机床股份有限公司 | Backlash Elimination Structure of Gear Transmission Mechanism |
| CN105108554B (en) * | 2013-11-28 | 2017-03-29 | 芜湖恒升重型机床股份有限公司 | Backlash Elimination Structure of Gear Transmission Mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |