CN201988981U - Adjusting structure for clearance between worm gear and worm rod of split-type double-lead worm rod - Google Patents
Adjusting structure for clearance between worm gear and worm rod of split-type double-lead worm rod Download PDFInfo
- Publication number
- CN201988981U CN201988981U CN2011200572572U CN201120057257U CN201988981U CN 201988981 U CN201988981 U CN 201988981U CN 2011200572572 U CN2011200572572 U CN 2011200572572U CN 201120057257 U CN201120057257 U CN 201120057257U CN 201988981 U CN201988981 U CN 201988981U
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- CN
- China
- Prior art keywords
- worm
- shaft
- worm rod
- rod
- gear
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- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an adjusting structure for the clearance between a worm gear and a worm rod of a split-type double-lead worm rod, which adopts a structure that the worm rod is separate from a shaft, and comprises the worm gear, a worm gear shaft, the worm rod, flat keys, a worm rod nut, a sleeve, a worm rod nut and a worm rod shaft, wherein, the worm gear and the worm rod are engaged into a whole; the worm gear and the worm gear shaft are connected through the common flat key; the worm rod and the worm rod shaft are connected through the flat key; the sleeve is connected with one end of the worm rod through threads so as to be positioned on the worm rod shaft and end at a boss on the shaft; the worm rod nut is arranged on the worm rod before the sleeve; and the worm rod shaft nut is arranged on the worm rod shaft behind the sleeve. Due to the adoption of the split-type structure that the integral worm rod is separated into the worm rod and the shaft, the clearance between the worm gear and the worm rod can be adjusted easily by simply adjusting the position of the sleeve to drive the worm rod to move axially by rotating a spanner, the adjusting operation is simple and intuitive. By adjusting the axial displacement of the worm rod, the defects such as transmission inaccuracy and the like due to the clearance during the movement of the double-lead worm gear and worm rod can be avoided.
Description
Technical field
The utility model relates to part, parts or the annex of lathe, is meant a kind of worm and gear gap adjusting structure that is applied to split type pair of helical pitch worm screw of screw milling machine especially.
Background technology
There is different lead two helical pitch worm and gears left and right side, and the helical pitch of the same side equates, thereby the transverse tooth thickness of worm screw thickening from an end line.Contact between the worm and wormwheel is the line contact.At present generally be to utilize the method that moves axially worm screw, the back lash of eliminating worm and wormwheel.But long-term the use often easily caused wearing and tearing, produces the gap; And only move axially the worm screw adjusting play, could keep precision.In the process of adjusting play, often be subjected to the restriction of structure, degree of amplitude modulation is also little, can't thoroughly eliminate the gap, thereby influence transmission accuracy, does not satisfy the necessary requirement of machining.
Summary of the invention
Technical problem to be solved in the utility model just is the problem that exists at worm and gear gap adjusting structure in the existing lathe, provides a kind of employing the monoblock type worm screw to be separated into the worm and gear gap adjusting structure of worm screw and split type pair of helical pitch worm screw of the split-type structural of axle.
The worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the present utility model adopts worm screw and axle split-type structural, form by worm gear, worm-wheel shaft, worm screw, flat key, worm screw nut, cover, worm shaft nut, worm shaft, worm gear and worm screw are connected as a single entity by engagement, worm gear is connected by general flat key with worm-wheel shaft, worm screw is connected by flat key with worm shaft, cover is connected with the end of worm screw by screw thread and places on the worm shaft and terminate in a convex platform place, the worm screw nut is loaded on the worm screw before being positioned at cover, and the worm shaft nut is loaded on the worm shaft after being positioned at cover.Worm shaft nut wherein adopts two and cap.
The worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the present utility model is divided into worm screw and axle two parts with former monoblock type worm screw, thereby the position by worm screw nut and worm shaft nut regulating sleeve utilizes screw thread rotation drive worm screw to move axially, and has reached the effect of adjusting worm gear and worm screw gap.When long-term use worm and gear wearing and tearing, when producing the gap, as long as unclamp worm screw nut and worm shaft nut, readjust the position of cover, make worm shaft to moving into place, screw worm shaft nut fixed cover behind to be adjusted the finishing, screw fixedly worm screw of worm screw nut then, can finish the adjustment work in worm and gear gap easily.
Advantage of the present utility model just is owing to adopt the split-type structural that the monoblock type worm screw is separated into worm screw and axle, drive worm shaft to moving as long as pass through the position of the rotation adjustment cover of spanner when adjusting the worm and gear gap, just can finish the adjustment work in worm and gear gap easily, the adjusting operation is simple, intuitive is stronger.By regulating the axial displacement of worm screw, can avoid in two helical pitch worm and gear motion processes because defective such as the transmission that bring in the gap is inaccurate.The worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the present utility model have adjust accurate, durable in use, operability is good, reliability is stable than advantages such as height.And since the utility model possessed adjust accurate, simple to operate, stability is higher, has also improved the positioning accuracy of main shaft, prolongs worm and gear service life, production cost also reduces greatly virtually.Thereby the worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the present utility model has broad prospect for its application.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further;
Fig. 1 is the cross-sectional schematic of the worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the utility model.
With reference to accompanying drawing, as figure: 1, worm gear, 2, worm-wheel shaft, 3, worm screw, 4, flat key, 5, the worm screw nut, 6, cover, 7, the worm shaft nut, 8, worm shaft.
The specific embodiment
Below be embodiment of the present utility model, the actual use of the present utility model is not limited to embodiment.
Embodiment 1, the worm and gear gap adjusting structure of split type pair of helical pitch worm screw
Adopt the worm and gear gap adjusting structure of split type pair of helical pitch worm screw of the utility model structure.Consult accompanying drawing, the worm and gear gap adjusting structure of split type pair of helical pitch worm screw is made up of worm gear 1, worm-wheel shaft 2, worm screw 3, flat key 4, worm screw nut 5, cover 6, worm shaft nut 7, worm shaft 8, worm gear 1 and worm screw 3 are connected as a single entity by engagement, worm gear 1 and worm-wheel shaft 2 are connected by general flat key, worm screw 3 is connected by flat key 4 with worm shaft 8, cover 6 is connected with the end of worm screw 3 by screw thread and places on the worm shaft 8 and terminate in a convex platform place, worm screw nut 5 is loaded on the worm screw 3 before being positioned at cover 6, and worm shaft nut 7 is loaded on the worm shaft 8 after being positioned at cover 6.Worm shaft nut wherein adopts two and cap.
The worm and gear gap adjusting structure of split type pair of helical pitch worm screw is applied to the Worm and worm-wheel gearing in the headstock of CNCL series profiled screw milling machine, worm and gear nominal modulus m is 8, nominal lead t=25.133, former monoblock type worm screw is divided into worm screw and axle two parts, thereby the position by worm screw nut and worm shaft nut regulating sleeve utilizes screw thread rotation drive worm screw to move axially, and has reached the effect of adjusting worm gear and worm screw gap.When long-term use worm and gear wearing and tearing, when producing the gap, as long as unclamp worm screw nut and worm shaft nut, readjust the position of cover, make worm shaft to moving into place, screw worm shaft nut fixed cover behind to be adjusted the finishing, screw fixedly worm screw of worm screw nut then, can finish the adjustment work in worm and gear gap easily.
Originally adopt the drive mechanism of monoblock type worm and wormwheel, the mode of adjusting play is directly to move whole worm screw, owing to be subjected to the restriction of structure stroke, adjusts undesirablely, has influenced transmission accuracy.By adopting worm screw and axle split-type structural, changed the adjustment mode of the back lash of two helical pitch worm and gears, solve the problem of the restriction that is subjected to the structure stroke, thereby transmitted moment of torsion accurately, satisfy different cutting requirements.
Result of use is good.
Claims (2)
1. the worm and gear gap adjusting structure of a split type pair of helical pitch worm screw, it is characterized in that adopting worm screw and axle split-type structural, form by worm gear, worm-wheel shaft, worm screw, flat key, worm screw nut, cover, worm shaft nut, worm shaft, worm gear and worm screw are connected as a single entity by engagement, worm gear is connected by flat key with worm-wheel shaft, worm screw is connected by flat key with worm shaft, cover is connected with the end of worm screw by screw thread and places on the worm shaft and terminate in a convex platform place, the worm screw nut is loaded on the worm screw before being positioned at cover, and the worm shaft nut is loaded on the worm shaft after being positioned at cover.
2. the worm and gear gap adjusting structure of split type pair of helical pitch worm screw according to claim 1 is characterized in that worm shaft nut wherein adopts two and cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200572572U CN201988981U (en) | 2011-03-07 | 2011-03-07 | Adjusting structure for clearance between worm gear and worm rod of split-type double-lead worm rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200572572U CN201988981U (en) | 2011-03-07 | 2011-03-07 | Adjusting structure for clearance between worm gear and worm rod of split-type double-lead worm rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988981U true CN201988981U (en) | 2011-09-28 |
Family
ID=44665484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200572572U Expired - Fee Related CN201988981U (en) | 2011-03-07 | 2011-03-07 | Adjusting structure for clearance between worm gear and worm rod of split-type double-lead worm rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088967A (en) * | 2014-06-26 | 2014-10-08 | 徐州恒辉编织机械有限公司 | Worm gear and worm reducer transmission device |
| CN112024979A (en) * | 2020-08-18 | 2020-12-04 | 德州普利森机床有限公司 | Clamping and rotating device for thin-wall workpiece |
-
2011
- 2011-03-07 CN CN2011200572572U patent/CN201988981U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088967A (en) * | 2014-06-26 | 2014-10-08 | 徐州恒辉编织机械有限公司 | Worm gear and worm reducer transmission device |
| CN112024979A (en) * | 2020-08-18 | 2020-12-04 | 德州普利森机床有限公司 | Clamping and rotating device for thin-wall workpiece |
| CN112024979B (en) * | 2020-08-18 | 2022-05-17 | 德州普利森机床有限公司 | Clamping and rotating device for thin-wall workpiece |
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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: 20110928 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |