CN214023520U - High-precision rotating lathe center - Google Patents
High-precision rotating lathe center Download PDFInfo
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- CN214023520U CN214023520U CN202022390178.5U CN202022390178U CN214023520U CN 214023520 U CN214023520 U CN 214023520U CN 202022390178 U CN202022390178 U CN 202022390178U CN 214023520 U CN214023520 U CN 214023520U
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- center
- cavity
- core rod
- bearings
- deep groove
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Abstract
The utility model discloses a high-precision rotary lathe center, which comprises a center sleeve, a core rod, a mandril and a center, wherein the inner cavity of the center sleeve is divided into a front cavity, a middle cavity and a back cavity, the mandril is arranged in the back cavity, the core rod is arranged in the front cavity, two thrust bearings are arranged in the front cavity, the two thrust bearings are assembled back to back, two deep groove ball bearings are arranged in the middle cavity, the deep groove ball bearings arranged in the middle cavity are all assembled back to back, one end of the core rod is connected with the mandril, and the other end is fixed with the center, the utility model discloses in the actual operation process, two thrust bearings and two deep groove ball bearings are specially arranged in the center sleeve, and the two bearings are assembled back to back, so that the center can stably operate at high speed in the center sleeve, and the four bearings arranged in the front cavity and the middle cavity can ensure that the core rod can not deflect in the high-speed operation process, the operation precision of the center is ensured.
Description
Technical Field
The utility model relates to a lathe top processing technology field, in particular to high accuracy rotary lathe is top.
Background
The center is a machine tool part in machining and comprises a fixed center and a movable center. The center is used on a lathe to center and bear the weight and cutting force of the workpiece. The lathe center can be directly arranged in a taper hole of a lathe spindle, and the lathe center and the workpiece rotate together to center the workpiece. The center needs to be matched with the high-speed rotation of the center, the existing center cannot rotate at a high speed, and swinging is easy to occur in the rotating process, so that poor machining of workpieces is caused.
The utility model provides a high accuracy rotary lathe is top solves above-mentioned technical problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high accuracy rotary lathe is top to solve above-mentioned technical problem.
The utility model provides a high accuracy rotating lathe is top which characterized in that: the center-pressing type multi-functional combined type oil pumping unit comprises a center sleeve, a core rod, a top rod and a center, wherein an inner cavity of the center sleeve is divided into a front cavity, a middle cavity and a rear cavity, the top rod is installed in the rear cavity, the core rod is arranged in the front cavity, two thrust bearings are arranged in the front cavity and assembled back to back, two deep groove ball bearings are arranged in the middle cavity, the deep groove ball bearings arranged in the middle cavity are all assembled back to back, one end of the core rod is connected with the top rod, the other end of the core rod is fixed with the center, a sealing cover is arranged at the front end of the front cavity, and a sealing ring is arranged at the rear end of the middle cavity.
Furthermore, a spacer bush is arranged between the core rod and the ejector rod.
Further, a shaft sleeve is arranged between the two thrust bearings, and a shaft sleeve is arranged between the two deep groove ball bearings.
Compared with the prior art, the utility model has the advantages that: the center sleeve is characterized in that two thrust bearings and two deep groove ball bearings are specially arranged in the center sleeve, the two bearings are assembled back to back, the center can be stably and high-speed operated in the center sleeve, the four bearings arranged in the front cavity and the middle cavity can ensure that the core rod cannot deviate in the high-speed operation process, the operation precision of the center is ensured, the center adopts wear-resistant carburization 20Cr, the wear resistance of the center is improved, and the service life of the center is further prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural view of a high-precision rotary lathe center provided in an embodiment of the present invention;
in the drawings: 1. a tip sleeve; 2. a core bar; 3. a top rod 4 and a tip; 5. a front cavity; 6. a middle cavity; 7. a rear cavity; 8. a spacer sleeve; 9. a thrust bearing; 10. a deep groove ball bearing; 11. a sealing cover; 12. a seal ring; 13. and a shaft sleeve.
Detailed Description
In view of the deficiencies in the prior art, the technical solution of the present invention can be provided through long-term research and a large amount of practice. The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is the embodiment of the present invention provides a structural schematic diagram of a high-precision rotating lathe center, as shown in fig. 1, a high-precision rotating lathe center characterized in that: the center comprises a center sleeve 1, a core rod 2, a top rod 3 and a center 4, wherein the inner cavity of the center sleeve 1 is divided into a front cavity 5, a middle cavity 6 and a rear cavity 7, the top rod 4 is installed in the rear cavity 7, the core rod 2 is arranged in the front cavity 5, two thrust bearings 9 are arranged in the front cavity 5, the two thrust bearings 9 are assembled back to back, two deep groove ball bearings 10 are arranged in the middle cavity 6, the deep groove ball bearings 10 arranged in the middle cavity 6 are all assembled back to back, one end of the core rod 2 is connected with the top rod 3, the other end of the core rod is fixed with the center 4, a sealing cover 11 is arranged at the front end of the front cavity 5, a sealing ring 12 is arranged at the rear end of the middle cavity 6, the center 4 is made of 20Cr subjected to carburization, and the surface hardness of the center 4 is HRC 55-60.
Preferably, a spacer 8 is arranged between the core rod 2 and the ejector rod 3.
Preferably, a shaft sleeve 13 is arranged between the two thrust bearings 9, and a shaft sleeve 13 is arranged between the two deep groove ball bearings 10.
Compared with the prior art, the utility model has the advantages that: the center sleeve is characterized in that two thrust bearings and two deep groove ball bearings are specially arranged in the center sleeve, the two bearings are assembled back to back, the center can be stably and high-speed operated in the center sleeve, the four bearings arranged in the front cavity and the middle cavity can ensure that the core rod cannot deviate in the high-speed operation process, the operation precision of the center is ensured, the center adopts wear-resistant carburization 20Cr, the wear resistance of the center is improved, and the service life of the center is further prolonged.
The utility model provides a pair of high accuracy rotary lathe is top, it should be understood, above-mentioned embodiment is only for the explanation the utility model discloses a technical conception and characteristics, its aim at let the personage of familiar with this technique can understand the utility model discloses a content and according to in order to implement, can not restrict with this the utility model discloses a protection scope. All simple changes and replacements made by the contents of the utility model are included in the protection scope of the utility model.
Claims (3)
1. The utility model provides a high accuracy rotating lathe is top which characterized in that: the center-pressing type multi-functional combined type oil pumping unit comprises a center sleeve, a core rod, a top rod and a center, wherein an inner cavity of the center sleeve is divided into a front cavity, a middle cavity and a rear cavity, the top rod is installed in the rear cavity, the core rod is arranged in the front cavity, two thrust bearings are arranged in the front cavity and assembled back to back, two deep groove ball bearings are arranged in the middle cavity, the deep groove ball bearings arranged in the middle cavity are all assembled back to back, one end of the core rod is connected with the top rod, the other end of the core rod is fixed with the center, a sealing cover is arranged at the front end of the front cavity, and.
2. A high precision rotary lathe center as defined in claim 1, wherein: and a spacer bush is arranged between the core rod and the ejector rod.
3. A high precision rotary lathe center as defined in claim 1, wherein: and a shaft sleeve is arranged between the two thrust bearings, and a shaft sleeve is arranged between the two deep groove ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022390178.5U CN214023520U (en) | 2020-10-25 | 2020-10-25 | High-precision rotating lathe center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022390178.5U CN214023520U (en) | 2020-10-25 | 2020-10-25 | High-precision rotating lathe center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214023520U true CN214023520U (en) | 2021-08-24 |
Family
ID=77354312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022390178.5U Active CN214023520U (en) | 2020-10-25 | 2020-10-25 | High-precision rotating lathe center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214023520U (en) |
-
2020
- 2020-10-25 CN CN202022390178.5U patent/CN214023520U/en active Active
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