CN211192048U

CN211192048U - Umbrella type movable center of lathe

Info

Publication number: CN211192048U
Application number: CN201921202083.7U
Authority: CN
Inventors: 李文玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-08-07
Anticipated expiration: 2029-07-29

Abstract

The embodiment of the utility model discloses a lathe umbrella type movable center, which comprises a shell, a rear bearing, a thrust bearing, a center stabilizing bearing and a mandrel; the shell is conical, one end of the mandrel penetrates through a rear bearing, a thrust bearing and a center stabilizing bearing which are arranged in the shell, the rear bearing, the thrust bearing and the center stabilizing bearing are located in the shell, the other end of the mandrel extends out of the shell, the rear bearing is located at the conical flared end, the center stabilizing bearing is located at the conical closed end, and the thrust bearing is located between the center stabilizing bearing and the rear bearing. The lathe umbrella-shaped live center has the advantages of good stability, high processing precision, long service life and high working efficiency.

Description

Umbrella type movable center of lathe

Technical Field

The utility model relates to a lathe field, concretely relates to lathe umbrella type live center.

Background

In the prior art, an umbrella-shaped center of a lathe generally comprises a shell, a mandrel, a bearing fixed on the mandrel and a sealing end cover used for sealing the shell, the running shell of the umbrella-shaped lathe is limited by the bearing, the rigidity is low during working, the stability is poor, the machining precision is low, the precision requirement cannot be met particularly when long pipe parts are machined, the service life is short, and the working efficiency is low.

Therefore, the lathe umbrella type movable center which is good in stability, high in machining precision, long in service life and high in working efficiency needs to be researched and developed.

The information disclosed in this background section of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lathe umbrella type live center, this lathe umbrella type live center stability is good, and the machining precision is high, long service life, and work efficiency is high.

In order to achieve the purpose, the utility model provides a lathe umbrella type movable center which comprises a shell, a rear bearing, a thrust bearing, a center stabilizing bearing and a mandrel;

the shell is conical, one end of the mandrel penetrates through a rear bearing, a thrust bearing and a center stabilizing bearing which are arranged in the shell, the rear bearing, the thrust bearing and the center stabilizing bearing are located in the shell, the other end of the mandrel extends out of the shell, the rear bearing is located at the conical flared end, the center stabilizing bearing is located at the conical closed end, and the thrust bearing is located between the center stabilizing bearing and the rear bearing.

Preferably, the housing is open at both ends.

Preferably, the opening at two ends of the shell is provided with a first sealing end cover and a second sealing end cover.

Preferably, the first end seal is a sealing ring disposed at the tapered flared end.

Preferably, the second end cap is a seal screw cap screwed on the tapered closing end.

Preferably, the shell is the inside accommodation space that forms of cavity toper, the rear bearing the thrust bearing steady heart bearing sets up in the accommodation space, the rear bearing the thrust bearing reaches steady heart bearing cup joints on the dabber, makes the dabber can for the shell rotates.

Preferably, the diameter of the end part of the mandrel extending out of the outer shell is smaller than the diameter of the intersection of the mandrel and the flaring end of the outer shell.

Preferably, the length of the mandrel extending out of the housing is 110 mm.

Has the advantages that: this application is through rear bearing, thrust bearing, steady heart bearing support mandrel, makes lathe umbrella type live center operation in-process, and the dabber supporting effect is better, and dabber stability is good, makes lathe machining precision high, long service life, and work efficiency is high.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the umbrella-shaped live center of the lathe of the present invention.

Description of reference numerals:

1. a housing; 2. a rear bearing; 3. a thrust bearing; 4. a center-stabilized bearing; 5. a mandrel; 6. sealing the screw cap; 7. and (5) sealing rings.

Detailed Description

The technical scheme of the utility model is described in detail with the accompanying drawings.

According to one aspect of the utility model, the umbrella-shaped live center of the lathe is provided, which comprises a shell, a rear bearing, a thrust bearing, a center stabilizing bearing and a mandrel;

Particularly, the mandrel is supported by the rear bearing, the thrust bearing and the center stabilizing bearing, so that in the operation process of the umbrella-shaped movable center of the lathe, the mandrel is better in supporting effect, the mandrel is good in stability and high in rigidity, the machining precision of the lathe is high, the service life is long, and the working efficiency is high.

Specifically, when in use, the rear bearing mainly plays a role of fixing the mandrel and bears load so that the mandrel can stably rotate in the shell; the thrust bearing needs to be pushed forward and tightly in use and is used for bearing the thrust of the mandrel; the center stabilizing bearing is arranged at the top end of the mandrel, so that the three bearings of load, thrust and center stabilization bear together to enable the mandrel to run more stably, the precision is higher, and the service life is longer.

Further, two ends of the shell are provided with holes.

Particularly, the installation and maintenance of the mandrel, the rear bearing, the thrust bearing and the center stabilizing bearing are facilitated by the holes formed in the two ends.

Furthermore, the opening at two ends of the shell is provided with a first sealing end cover and a second sealing end cover.

Further, the first sealing end cover is a sealing ring and is arranged at the conical flaring end.

Further, the second sealing end cover is a sealing screw cap and is screwed at the tapered closing-in end.

Further, the shell is the inside accommodation space that forms of cavity toper, the rear bearing thrust bearing the steady heart bearing sets up in the accommodation space, the rear bearing thrust bearing reaches steady heart bearing cup joints on the dabber, makes the dabber can for the shell rotates.

Further, the diameter of the end part of the mandrel extending out of the shell is smaller than the diameter of the intersection of the mandrel and the flaring end of the shell.

More preferably, the diameter of the end of the mandrel extending out of the outer shell is less than the diameter of the intersection of the mandrel and the flared end of the outer shell by 3 mm.

Specifically, the design mode ensures that the end of the mandrel extending out of the shell is conical, and the mandrel is not easy to vibrate in the running and processing process.

Further, the length of the mandrel extending out of the shell is 110 mm.

Example 1

As shown in fig. 1, the umbrella-shaped live center of the lathe comprises a shell 1, a rear bearing 2, a thrust bearing 3, a center stabilizing bearing 4 and a mandrel 5;

wherein, shell 1 is the toper, the one end of dabber 5 is passed and is set up rear bearing 2, thrust bearing 3 and steady heart bearing 4 in the shell 1 are located in the shell 1, and the other end stretches out shell 1, rear bearing 2 is in conical flaring end, steady heart bearing 4 is in conical closed end, thrust bearing 3 is located steady heart bearing 4 reaches between the rear bearing 2.

Wherein, the two ends of the shell 1 are provided with holes.

And a first sealing end cover and a second sealing end cover are arranged at the opening positions at the two ends of the shell 1.

Wherein, the first sealing end cover is a sealing ring 7 and is arranged at the conical flaring end.

The second sealing end cover is a sealing screw cap 6 screwed at the tapered closing-in end.

Wherein, shell 1 is the inside accommodation space that forms of cavity toper, rear bearing 2 thrust bearing 3 steady heart bearing 4 sets up in the accommodation space, rear bearing 2 thrust bearing 3 reaches steady heart bearing 4 cup joints on dabber 5, makes dabber 5 can for shell 1 rotates.

Wherein, the diameter of the end part of the mandrel 5 extending out of the shell 1 is smaller than the diameter of the intersection of the mandrel 5 and the flaring end of the shell 1.

Wherein, the length of the mandrel 5 extending out of the shell 1 is 110 mm.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lathe umbrella live center, its characterized in that, lathe umbrella live center includes: the device comprises a shell, a rear bearing, a thrust bearing, a center stabilizing bearing and a mandrel;

2. The lathe umbrella live center of claim 1, wherein the housing is open at both ends.

3. The lathe umbrella type live center as claimed in claim 2, wherein the opening at the two ends of the outer shell is provided with a first sealing end cover and a second sealing end cover.

4. The lathe umbrella live center of claim 3, wherein the first end seal cap is a sealing ring disposed at the tapered flared end.

5. The lathe umbrella live center of claim 3, wherein the second end seal cap is a seal screw cap screwed onto the tapered closing end.

6. The lathe umbrella type live center as claimed in claim 1, wherein the housing is hollow and tapered, an accommodating space is formed inside the housing, the rear bearing, the thrust bearing and the center stabilizing bearing are arranged in the accommodating space, and the rear bearing, the thrust bearing and the center stabilizing bearing are sleeved on the mandrel, so that the mandrel can rotate relative to the housing.

7. The lathe umbrella live center of claim 1, wherein the diameter of the end of the mandrel extending beyond the housing is smaller than the diameter of the intersection of the mandrel and the flared end of the housing.

8. The lathe umbrella live center of claim 1, wherein the length of the mandrel extending out of the housing is 110 mm.