CN203770406U - Outer bearing ring structure of main shaft of machine tool - Google Patents
Outer bearing ring structure of main shaft of machine tool Download PDFInfo
- Publication number
- CN203770406U CN203770406U CN201420007281.9U CN201420007281U CN203770406U CN 203770406 U CN203770406 U CN 203770406U CN 201420007281 U CN201420007281 U CN 201420007281U CN 203770406 U CN203770406 U CN 203770406U
- Authority
- CN
- China
- Prior art keywords
- outer ring
- ring structure
- machine tool
- lock ball
- ball mouth
- Prior art date
- 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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- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to an outer bearing ring structure of a main shaft of a machine tool. The outer bearing ring structure comprises an outer ring, wherein a rolling way is arranged on the surface of the inner circumference of the outer ring; a ball locking opening for locking a steel ball is formed in one side of the rolling way; the outer bearing ring structure is characterized in that the surface of the ball locking opening is a straight cylindrical surface, and the other side of the ball locking opening is a conical inner hole with a taper; the inner diameter size of the conical inner hole is gradually increased from inside to outside; the inner end of the conical inner hole is connected with the ball locking opening through a step chamfer in a transitioning manner; and the outer end of the conical inner hole is connected with the end face of the outer ring through an arc chamfer in a transitioning manner. The outer bearing ring structure is simple and ingenious in design; due to the design of the ball locking opening structure, the inner grinding stress caused by locking opening grinding is changed, the grinding strain is alleviated, and the precision and the stability of a product are improved.
Description
Technical field
The utility model relates to a kind of construction design of journal bearings, specifically a kind of machine tool mainshaft bearing outer ring structure with brand-new lock ball mouth.
Background technique
Machine tool mainshaft bearing, is generally large model, thin-walled type bearing, and intrinsic bearing lock ball actinal surface is inclined-plane, after there is mill fore shaft for many years, produce the problem that external diameter is out of shape always, the production of puzzlement bearing, sometimes distortion is very large, and when mill fore shaft, fore shaft face is local can not grind.Distortion after this mill fore shaft can cause Product Precision to change, although the Product Precision while dispatching from the factory meets company's standard-required that dispatches from the factory, along with lengthen service time, Product Precision can change, and causes product undesirable.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of machine tool mainshaft bearing outer ring structure is provided, it is simple in structure, it is ingenious to design, grinding internal stress while having changed mill fore shaft by the design of lock ball mouth structure, reduce grinding strain, thereby improve the precision and stability of product.
The technological scheme providing according to the utility model: machine tool mainshaft bearing outer ring structure, comprise outer ring, in described outer ring, perimeter surface is provided with raceway, raceway one side is provided with the lock ball mouth for pinning steel ball, it is characterized in that: described lock ball actinal surface is straight cylindrical surfaces, lock ball mouth opposite side is the circular cone endoporus with tapering, the internal diameter size of this circular cone endoporus increases from inside to outside gradually, between circular cone endoporus the inner and lock ball mouth, be connected by the transition of a step chamfering, in circular cone, outer end of hole is connected with cycle surface transition by a circular arc chamfering.
As further improvement of the utility model, the width of described lock ball mouth is 0.5mm ~ 1.5mm.
As further improvement of the utility model, described lock ball actinal surface has allowed tapering tolerance, but can only be to be greater than the one end near raceway near one end of step chamfering.
As further improvement of the utility model, described step chamfering is the transition chamfering of 45 °.
As further improvement of the utility model, the tapering of described circular cone endoporus is 2 ~ 3 °.
As further improvement of the utility model, the inner radial dimension of described circular cone endoporus is than the large 0.2mm ~ 0.3mm of the internal diameter size of lock ball mouth.
the utility model compared with prior art, has the following advantages:the utility model is simple in structure, it is ingenious to design, by the design of lock ball mouth structure, when mill fore shaft, only grind a line at fore shaft position, therefore grinding stress is relatively very little, reduce grinding strain, circularity before mill fore shaft and after mill fore shaft does not change substantially, thereby has solved long-standing problem in technique, has improved the precision and stability of product.
Brief description of the drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in the figure: machine tool mainshaft bearing outer ring 1 structure in embodiment, comprise outer ring 1, the interior perimeter surface in described outer ring 1 is provided with raceway 2, raceway 2 one sides are provided with the lock ball mouth 3 for pinning steel ball, 3, described lock ball mouth is straight cylindrical surfaces, lock ball mouth 3 opposite sides are the circular cone endoporus 5 with tapering, the internal diameter size of this circular cone endoporus 5 increases from inside to outside gradually, between circular cone endoporus 5 the inners and lock ball mouth 3, be connected by step chamfering 4 transition, circular cone endoporus 5 outer ends are connected with outer ring 1 end face transition by a circular arc chamfering 6.
As shown in Figure 1, in the utility model embodiment, the width of described lock ball mouth 3 is preferably designed for 0.5mm ~ 1.5mm.3, described lock ball mouth has allowed tapering tolerance, but can only be to be greater than the one end near raceway 2 near one end of step chamfering 4.Described step chamfering 4 is transition chamferings of one 45 °.The tapering of described circular cone endoporus 5 is 2 ~ 3 °.The inner radial dimension of described circular cone endoporus 5 is than the large 0.2mm ~ 0.3mm of the internal diameter size of lock ball mouth 3.
Claims (6)
1. machine tool mainshaft bearing outer ring structure, comprise outer ring (1), the interior perimeter surface in described outer ring (1) is provided with raceway (2), raceway (2) one sides are provided with the lock ball mouth (3) for pinning steel ball, it is characterized in that: described lock ball mouth (3) face is straight cylindrical surfaces, lock ball mouth (3) opposite side is the circular cone endoporus (5) with tapering, the internal diameter size of this circular cone endoporus (5) increases from inside to outside gradually, between circular cone endoporus (5) the inner and lock ball mouth (3), be connected by a step chamfering (4) transition, circular cone endoporus (5) outer end is connected with outer ring (1) end face transition by a circular arc chamfering (6).
2. machine tool mainshaft bearing outer ring structure as claimed in claim 1, is characterized in that: the width of described lock ball mouth (3) is 0.5mm ~ 1.5mm.
3. machine tool mainshaft bearing outer ring structure as claimed in claim 1, is characterized in that: described lock ball mouth (3) face has allowed tapering tolerance, but can only be to be greater than the one end near raceway (2) near one end of step chamfering (4).
4. machine tool mainshaft bearing outer ring structure as claimed in claim 1, is characterized in that: described step chamfering (4) is the transition chamfering of 45 °.
5. machine tool mainshaft bearing outer ring structure as claimed in claim 1, is characterized in that: the tapering of described circular cone endoporus (5) is 2 ~ 3 °.
6. machine tool mainshaft bearing outer ring structure as claimed in claim 1, is characterized in that: the inner radial dimension of described circular cone endoporus (5) is than the large 0.2mm ~ 0.3mm of internal diameter size of lock ball mouth (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007281.9U CN203770406U (en) | 2014-01-07 | 2014-01-07 | Outer bearing ring structure of main shaft of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007281.9U CN203770406U (en) | 2014-01-07 | 2014-01-07 | Outer bearing ring structure of main shaft of machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770406U true CN203770406U (en) | 2014-08-13 |
Family
ID=51287600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420007281.9U Expired - Fee Related CN203770406U (en) | 2014-01-07 | 2014-01-07 | Outer bearing ring structure of main shaft of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775504A (en) * | 2014-01-07 | 2014-05-07 | 无锡市第二轴承有限公司 | Main shaft bearing outer ring structure of machine tool |
| CN112372037A (en) * | 2020-10-26 | 2021-02-19 | 桐乡市恒泰精密机械有限公司 | Burr prevention machining method suitable for eccentric intermittent cutting |
-
2014
- 2014-01-07 CN CN201420007281.9U patent/CN203770406U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775504A (en) * | 2014-01-07 | 2014-05-07 | 无锡市第二轴承有限公司 | Main shaft bearing outer ring structure of machine tool |
| CN112372037A (en) * | 2020-10-26 | 2021-02-19 | 桐乡市恒泰精密机械有限公司 | Burr prevention machining method suitable for eccentric intermittent cutting |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20200107 |