CN202684111U - Rear supporting and installing structure of lathe spindle - Google Patents
Rear supporting and installing structure of lathe spindle Download PDFInfo
- Publication number
- CN202684111U CN202684111U CN2012202900699U CN201220290069U CN202684111U CN 202684111 U CN202684111 U CN 202684111U CN 2012202900699 U CN2012202900699 U CN 2012202900699U CN 201220290069 U CN201220290069 U CN 201220290069U CN 202684111 U CN202684111 U CN 202684111U
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- CN
- China
- Prior art keywords
- spindle
- lathe spindle
- main shaft
- roller bearing
- installing structure
- 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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Abstract
The utility model discloses a rear supporting and installing structure of a lathe spindle. The rear supporting and installing structure of the lathe spindle comprises a spindle, wherein a rear support seat is installed on the rear portion of the spindle, a double-row conical bore roller bearing is installed between the rear support seat and the spindle, a spacer bush is leaned against the outer side of the double-row conical bore roller bearing, and lock nuts fixed on the spindle are leaned against the outer side of the spacer bush. The rear supporting and installing structure of the lathe spindle has the advantages of adjusting to perform axial pre-tightening and locating conveniently and accurately, and being low in quantity of parts, small in accumulated error, simple in structure, and convenient to assemble and maintain. In addition, the spindle is high in rotating accuracy and good in antiknock characteristic, so that the rotating accuracy and the machining accuracy of the parts are improved greatly, and meanwhile efficiency of assembling, debugging and final inspection is improved, and cost of production and service is reduced.
Description
Technical field
The utility model relates to lathe spindle and supports the field, specifically belongs to the rear support mounting structure of lathe spindle.
Background technology
In the prior art, the rear support mounting structure of lathe spindle is forward and backward two supporting structures: the main bearing radial force of biserial conical bore roller bearing in the front support; Taper roll bearing in the rear support bears axially and radial load, and angular contact ball bearing bears axial force, and the axial location of its main shaft is at rear support one end.The adjusting of the axial fitted position of main shaft relies on division pad, division pad to adjust.Because of bearing block internal-external circle concentricity and very high with its end face squareness requirement, processing technology is complicated, the two ends depth of parallelism to baffle ring, division pad, division pad, spacer also needs to reach degree of precision, also needs facing-up is carried out in the casing left side, to guarantee the perpendicularity requirement in this end face and hole.Therefore the part of axial series is more on this main axle structure unit, so that accumulated error increases, thereby affects rotating accuracy and the shock resistance of main shaft.Circularity over tolerance when often turning occurring in the assembling and setting process, surface accuracy is overproof, the phenomenon such as large, the lathe shake of vibrations during cutting knife.Final assembly and checkability have been had a strong impact on.
The utility model content
The purpose of this utility model provides a kind of rear support mounting structure of lathe spindle, axial pretightening is carried out in adjustment and the location is accurately convenient, number of spare parts is few, accumulated error is little, and is simple in structure, assembling and easy to maintenance, spindle rotation accuracy is high, shock resistance is good, greatly improve rotating accuracy and the machining accuracy of part, also improved assembling, debugging, friendship inspection efficient simultaneously, reduced production and cost of serving.
The technical solution of the utility model is as follows:
The rear support mounting structure of lathe spindle, include main shaft, the rear portion of main shaft is installed on rear branching holder, and biserial conical bore roller bearing is installed between rear branching holder and the main shaft, the biserial conical bore roller bearing outside has leaned spacer, and the spacer outside leans the locking nut that is fixed on the main shaft.
The rear side of described rear branching holder is installed with the rear-end of spindle lid, has step in the rear-end of spindle lid, is placed with sealing ring in the step.
The utility model is divided into three-support structure, and forward and backward is main supporting, and the centre is aiding support.Front support is by the main bearing radial force of biserial conical bore roller bearing of biserial conical bore roller bearing, rear support, the radial ball bearing bearing radial force of middle supporting, and the bidirectional angular contact thrust ball bearing bears axial force, and the axial location of its main shaft is at front support one end.Axial pretightening and location are carried out in adjustment by end cap, nut, number of spare parts is few, accumulated error is little, simple in structure, assembling and easy to maintenance, spindle rotation accuracy is high, shock resistance is good, has greatly improved rotating accuracy and the machining accuracy of part, also improve simultaneously assembling, debugging, friendship inspection efficient, reduced production and cost of serving.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, the rear support mounting structure of lathe spindle, include main shaft 1, the rear portion of main shaft 1 is installed on rear branching holder 2, and biserial conical bore roller bearing 3 is installed between rear branching holder 2 and the main shaft 1, and biserial conical bore roller bearing 3 outsides have leaned spacer 4, spacer 4 outsides lean the locking nut 5 that is fixed on the main shaft, the rear side of rear branching holder 2 is installed with rear-end of spindle lid 6, has step in the rear-end of spindle lid 6, is placed with sealing ring 7 in the step.
Claims (2)
1. the rear support mounting structure of lathe spindle, include main shaft, it is characterized in that: the rear portion of main shaft is installed on rear branching holder, biserial conical bore roller bearing is installed between rear branching holder and the main shaft, the biserial conical bore roller bearing outside has leaned spacer, and the spacer outside leans the locking nut that is fixed on the main shaft.
2. the rear support mounting structure of lathe spindle according to claim 1 is characterized in that: the rear side of described rear branching holder is installed with the rear-end of spindle lid, has step in the rear-end of spindle lid, is placed with sealing ring in the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202900699U CN202684111U (en) | 2012-06-19 | 2012-06-19 | Rear supporting and installing structure of lathe spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202900699U CN202684111U (en) | 2012-06-19 | 2012-06-19 | Rear supporting and installing structure of lathe spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202684111U true CN202684111U (en) | 2013-01-23 |
Family
ID=47539782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202900699U Expired - Fee Related CN202684111U (en) | 2012-06-19 | 2012-06-19 | Rear supporting and installing structure of lathe spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202684111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312596A (en) * | 2014-07-31 | 2016-02-10 | 许保康 | Hydraulic pretightening structure for bearing |
| CN105465194A (en) * | 2016-01-28 | 2016-04-06 | 泊头巨人重工机械有限公司 | Large precise double-row ball roller bearing adjustment structure and adjustment method thereof |
-
2012
- 2012-06-19 CN CN2012202900699U patent/CN202684111U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312596A (en) * | 2014-07-31 | 2016-02-10 | 许保康 | Hydraulic pretightening structure for bearing |
| CN105465194A (en) * | 2016-01-28 | 2016-04-06 | 泊头巨人重工机械有限公司 | Large precise double-row ball roller bearing adjustment structure and adjustment method thereof |
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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: 20130123 Termination date: 20150619 |
|
| EXPY | Termination of patent right or utility model |