CN215091134U - Rotary tail top-mounted assembly - Google Patents
Rotary tail top-mounted assembly Download PDFInfo
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- CN215091134U CN215091134U CN202120826983.XU CN202120826983U CN215091134U CN 215091134 U CN215091134 U CN 215091134U CN 202120826983 U CN202120826983 U CN 202120826983U CN 215091134 U CN215091134 U CN 215091134U
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- rotating shaft
- shaft
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- sleeve
- middle rotating
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Abstract
The utility model belongs to the technical field of machining and discloses a rotary tail top-mounted assembly, which comprises a fixed shaft and a middle rotary shaft; the fixed shaft is sleeved at the left end of the outer side of the middle rotating shaft, a supporting sleeve is sleeved at the middle of the right end of the middle rotating shaft, the right end of the fixed shaft is integrally connected with a dustproof sleeve, and a needle bearing is clamped between the inner side of the dustproof sleeve and the middle rotating shaft; the left end of the fixed shaft is connected with a tail dustproof nut through threads. The utility model has simple installation and low technical requirements for the dispatching technicians, and the installation position is cleaned and installed; when the disc-shaped gear with the holes is machined by hobbing, a screw does not need to be locked to clamp a tooth blank, the machining time of single clamping is saved by 10-30 seconds, the production efficiency is obviously improved, the labor intensity of operators is reduced, and the method is suitable for batch machining of parts; the support sleeve is in taper fit with the middle rotating shaft, no gap exists when the support sleeve bears axial force, the rigidity is strong, the disassembly is convenient, and the machine adjusting time is saved.
Description
Technical Field
The utility model belongs to the technical field of machining, especially, relate to a rotatory tail top mounted body.
Background
At present: on a gear hobbing machine, a part is threaded on a mandrel and is locked by a nut when a disc-shaped gear is processed traditionally, a top point at the tail of a machine tool props against the mandrel for reprocessing, and the process of locking the nut lasts at least 15-30 seconds; like products in the market are simple in structure, all adopt ordinary bearings, are low in precision and short in service life, are not easy to replace a supporting sleeve, have high technical requirements on a machine adjusting technician during use, and are not suitable for machining high-precision parts.
Through the above analysis, the problems and defects of the prior art are as follows:
the tail jacking device of the existing gear hobbing machine is low in installation efficiency, low in precision and short in service life, the supporting sleeve is not easy to replace, and the tail jacking device is not suitable for machining high-precision parts.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides a rotatory tail top mounted body.
The utility model discloses a realize like this, a rotatory tail top-mounted assembly is provided with:
a fixed shaft and an intermediate rotating shaft;
the fixed shaft is sleeved at the left end of the outer side of the middle rotating shaft, a support sleeve is sleeved at the middle of the right end of the middle rotating shaft, a dustproof sleeve is integrally connected at the right end of the fixed shaft, and a needle bearing is clamped between the inner side of the dustproof sleeve and the middle rotating shaft;
the left end of the fixed shaft is connected with a tail dustproof nut through threads.
Furthermore, the left end of the middle rotating shaft is provided with a locking screw, and a pre-tightening nut is fixed on the locking screw and the outer side of the left end of the middle rotating shaft through threads.
Furthermore, a plane thrust ball bearing is clamped between the right side of the dustproof sleeve and the middle rotating shaft.
Furthermore, a small plane bearing and a retainer needle roller bearing are clamped between the inner side of the left end of the fixed shaft and the middle rotating shaft, and the small plane bearing is located on the left side of the retainer needle roller bearing.
Furthermore, the support sleeve and the middle rotating shaft are in taper fit, and the fit taper is 5 degrees.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:
the utility model has simple installation and low technical requirements for the dispatching technicians, and the installation position is cleaned and installed; when the disc-shaped gear with the holes is machined by hobbing, a screw does not need to be locked to clamp a tooth blank, the machining time of single clamping is saved by 10-30 seconds, the production efficiency is obviously improved, the labor intensity of operators is reduced, and the method is suitable for batch machining of parts. The support sleeve is designed according to the size of a machined part, is in taper fit with the middle rotating shaft, is free of clearance when bearing axial force, and is high in rigidity. The cooperation tapering is 5, convenient dismantlement, and it is rectified to exempt from to beat the table during in-service use, realizes fool dismantlement and changes, practices thrift the machine time of transferring.
The utility model discloses a counter shaft nut pretension back that little plane bearing can make keeps synchronous revolution.
The utility model discloses a bearing, holder bearing and plane thrust ball bearing bear axial and radial force respectively, and middle rotation axis afterbody adopts the nut pretension, and has increased stop screw and has prevented not hard up, and terminal surface and radial runout are less than or equal to 0.002mm, and the precision high rigidity is strong, injects lubricating grease in the bearing, can prevent iron fillings or the coolant liquid entering in the course of working through afterbody shield and dirt proof boot, and compact structure need not dismantle the maintenance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rotary tail top-mounted assembly provided by an embodiment of the present invention.
Fig. 2 is a schematic view of a structure of an intermediate rotating shaft according to an embodiment of the present invention.
In the figure: 1. a fixed shaft; 2. a needle bearing; 3. a cage needle bearing; 4. a planar thrust ball bearing; 5. an intermediate rotating shaft; 6. a facet bearing; 7. a tail dust-proof nut; 8. pre-tightening the nut; 9. a lock screw; 10. a dust-proof sleeve; 11. and a support sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
To the problem that prior art exists, the utility model provides a rotatory tail top mounted body, it is right to combine the figure below the utility model discloses do detailed description.
As shown in fig. 1 and fig. 2, the rotary tail top mounting assembly provided by the embodiment of the present invention comprises a fixed shaft 1 and a middle rotary shaft 5;
the fixed shaft 1 is sleeved at the left end of the outer side of the middle rotating shaft 5, the middle of the right end of the middle rotating shaft 5 is sleeved with a support sleeve 11, the right end of the fixed shaft 1 is integrally connected with a dustproof sleeve 10, and a needle bearing 4 is clamped between the inner side of the dustproof sleeve 10 and the middle rotating shaft 5; the left end of the fixed shaft 1 is connected with a tail dustproof nut 7 through threads.
The embodiment of the utility model provides an in the middle of 5 left ends of rotation axis be provided with stop screw 9, stop screw 9 and the 5 left ends outsides of middle rotation axis have pretension nut 8 through the threaded fixation.
The embodiment of the utility model provides an in between 10 right sides of dirt proof boot and the middle rotation axis 5 press from both sides and be equipped with plane thrust ball bearing 4.
The embodiment of the utility model provides an in between 1 left end inboard of fixed axle and the middle rotation axis 5 press from both sides and be equipped with facet bearing 6 and holder bearing 3, facet bearing 6 is located holder bearing 3 left sides.
The embodiment of the utility model provides an in support cover 10 be taper fit with middle rotation axis 5, the cooperation tapering is 5.
The supporting sleeve 11 is a movable supporting sleeve, a supporting position with a proper size is manufactured according to the size of an inner hole or the outer diameter of a processed part, the tail part adopts 5-degree taper to be matched with the part 5 for installation, no gap exists when the supporting sleeve bears axial force, looseness does not exist, and the precision is stable.
The fixed shaft 1, the middle rotating shaft 5 and the support sleeve 11 are all made of high-strength alloy structural steel through heat treatment to HRC55-60 and finish machining, so that high strength and high precision are guaranteed.
When the utility model is installed and used, the installation position is cleaned and installed; when the disc-shaped gear with the holes is machined by hobbing, a screw does not need to be locked to clamp a tooth blank, the machining time of single clamping is saved by 10-30 seconds, the production efficiency is obviously improved, the labor intensity of operators is reduced, and the method is suitable for batch machining of parts. The support sleeve is designed according to the size of a machined part, is in taper fit with the middle rotating shaft, is free of clearance when bearing axial force, and is high in rigidity. The cooperation tapering is 5, convenient dismantlement, and it is rectified to exempt from to beat the table during in-service use, realizes fool dismantlement and changes, practices thrift the machine time of transferring. Bear axial and radial force respectively through bearing, holder bearing and plane thrust ball bearing, middle rotation axis afterbody adopts the nut pretension, and increased stop screw and prevented becoming flexible, terminal surface and radial runout be less than or equal to 0.002mm, and the precision high rigidity is strong, injects lubricating grease in the bearing, can prevent iron fillings or the coolant liquid entering in the course of working through afterbody shield and dirt proof boot, compact structure need not dismantle the maintenance.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.
Claims (5)
1. A rotary tail top mounted ligand, characterized in that it is provided with:
a fixed shaft and an intermediate rotating shaft;
the fixed shaft is sleeved at the left end of the outer side of the middle rotating shaft, a support sleeve is sleeved at the middle of the right end of the middle rotating shaft, a dustproof sleeve is integrally connected at the right end of the fixed shaft, and a needle bearing is clamped between the inner side of the dustproof sleeve and the middle rotating shaft;
the left end of the fixed shaft is connected with a tail dustproof nut through threads.
2. The rotary tail top assembly body as claimed in claim 1, wherein a locking screw is arranged at the left end of the middle rotary shaft, and a pre-tightening nut is fixed on the locking screw and the outer side of the left end of the middle rotary shaft through threads.
3. The rotary tail top mounting body according to claim 1, wherein a plane thrust ball bearing is clamped between the right side of the dustproof sleeve and the middle rotating shaft.
4. The rotary tailstock assembly as claimed in claim 1, wherein a facet bearing and a cage needle bearing are interposed between the inner side of the left end of the stationary shaft and the intermediate rotary shaft, and the facet bearing is located on the left side of the cage needle bearing.
5. The rotary Tail cap assembly according to claim 1, wherein the support sleeve is in taper fit with the intermediate rotating shaft, and the fit taper is 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120826983.XU CN215091134U (en) | 2021-04-21 | 2021-04-21 | Rotary tail top-mounted assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120826983.XU CN215091134U (en) | 2021-04-21 | 2021-04-21 | Rotary tail top-mounted assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215091134U true CN215091134U (en) | 2021-12-10 |
Family
ID=79267491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120826983.XU Active CN215091134U (en) | 2021-04-21 | 2021-04-21 | Rotary tail top-mounted assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215091134U (en) |
-
2021
- 2021-04-21 CN CN202120826983.XU patent/CN215091134U/en active Active
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