CN88200707U - Grinding wheel main-shaft supporting structure for surface grinding machine - Google Patents
Grinding wheel main-shaft supporting structure for surface grinding machine Download PDFInfo
- Publication number
- CN88200707U CN88200707U CN 88200707 CN88200707U CN88200707U CN 88200707 U CN88200707 U CN 88200707U CN 88200707 CN88200707 CN 88200707 CN 88200707 U CN88200707 U CN 88200707U CN 88200707 U CN88200707 U CN 88200707U
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- main shaft
- supporting structure
- shaft supporting
- grinding
- grinding machine
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Abstract
The utility model discloses a grinding wheel main-shaft supporting structure for a surface grinding machine of a hollow preload cylindrical roller bearing, realizing the high-speed precision grinding processing in the mechanical engineering field for the rotation and the transmission of the dynamic force. The utility model improves the rotary precision and the rigidity of an original dynamic pressure bearing and enhances the smoothness degree of grinding and the production efficiency of the surface grinding machine.
Description
The utility model relates to the roller bearings grinding machine spindle and realize high speed and precision grinding field.
Be a watt formula hydraulic bearing at present at surface grinding machine upper support main shaft, in this bearing in order to form hydrodynamic pressure with balanced load, must leave the certain clearance amount between main shaft and the bearing shell, the existence of gap value makes main axis stiffness very low, thereby make main shaft when bearing grinding force, be easy to be lifted and produce certain rolling momentum, the rotating accuracy of main shaft also descends thereupon, so the workpiece degree of finish difference that grinds and with chatter mark.When grinding depth strengthens, higher or the gap value adjustment of rotating speed hour, hydraulic bearing bearing shell Chang Yin bears that heat that the excessive or oily temperature temperature rise of pressure produces can not in time distribute and with the axle locking, this has not only shortened working life, and increased maintenance expenses and time, productivity is descended.
The purpose of this utility model is to adopt the hollow cylindrical roller bearing supporting plane grinding machine spindle of the full dress preload of no retainer, utilize roller between inside and outside raceway, to bear the circular runout that preload reduces main shaft, thereby make main shaft have highi degree of accuracy, high rigidity and long-life, fully satisfy at a high speed, powerful precision grinding processing needs, and overcomes the deficiency of hydraulic bearing grinding wheel spindle system in the above-mentioned surface grinding machine.
Formation of the present utility model is seen illustrated in figures 1 and 2, the grinding wheel spindle of surface grinding machine supports for the preload hollow cylindrical roller bearing, also the outer shroud and the bearing saddle bore of preload hollow cylindrical roller bearing can be integral simultaneously, perhaps interior ring and the main shaft with its bearing is integral, finish grinding by drive unit rotation transmission, lubricating system is thin oil circulating lubrication or oil-immersed type circulating lubrication.
Description of drawings: Fig. 1 is being preload hollow cylindrical roller bearing 11 supporting spindles 6 that biserial does not have retainer near emery wheel 1 one ends, paired angular contact ball bearing 14 axially locating of the other end, and the rotor 13 of drive unit and stator 7 place in the casing 12.Adopt thin oil circulating lubrication, lubricated by hollow cylindrical roller bearing 11 oilhole and the oil supply gallery on the bearing support 3 etc. finish.Fig. 2 is three row hollow cylindrical roller bearings, 16 supports main shaft 18, and drive unit is connected with main shaft 18 by key 21 outside casing 19, adopts oil-immersed type circulating lubrication, lubricatedly realizes by 17, the 20 relative oil suctions of two Oil Guides covers.
Fig. 1 is described below in conjunction with instantiation:
Surface grinding machine grinding wheel spindle among Fig. 1 is by casing 12, emery wheel 1, grinding wheel chuck 10, main shaft 6, bearing support 3, hollow cylindrical roller bearing 11, stator 7, rotor 13, paired angular contact ball bearing 14, end cap 15 compositions such as grade are fixed on bearing support 3 and end cap 15 on the casing 12, and its endoporus time processing forms to determine good coaxality.The outer shroud 4 of hollow roller bearing with should make the distortion of outer race 4 after preload as much as possible little cooperating of bearing support 3 endoporus.The interior ring 5 of hollow cylindrical roller bearing with main shaft 6 interference fit of rotor 13 are housed, and make that raceway and rotor surface time processing form in the bearing, to guarantee their coaxality, help the transient equiliblium of main shaft simultaneously.Angular contact ball bearing 14 is made axially locating on main shaft 6 in pairs, front and back bearings is fixing with flange 2,8 respectively, and on the conical surface 9 of front-end of spindle, grinding wheel chuck 10 is housed and clamps emery wheel 1, after stator 7 energisings of drive unit, rotor 13 drives main shaft 6 rotations, makes 1 pair of workpiece of emery wheel carry out high-precision processing.
Claims (4)
1, a kind of main shaft supporting structure of surface grinding machine emery wheel, by casing 12, main shaft 6, bearing support 3, grinding wheel chuck 10 and drive unit are formed, and it is characterized in that main shaft is the preload hollow cylindrical roller bearing support of no retainer.
2, main shaft supporting structure according to claim 1 is characterized in that the outer shroud 4 of hollow cylindrical roller bearing is integral with bearing support 3.
3, main shaft supporting structure according to claim 1 is characterized in that the interior ring 5 of hollow roller bearing is integral with main shaft 6.
4, according to claim 1---3 described main shaft supporting structures is characterized in that the hollow roller in the hollow cylindrical roller bearing is two row, three row and four row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200707 CN88200707U (en) | 1988-01-29 | 1988-01-29 | Grinding wheel main-shaft supporting structure for surface grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200707 CN88200707U (en) | 1988-01-29 | 1988-01-29 | Grinding wheel main-shaft supporting structure for surface grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88200707U true CN88200707U (en) | 1988-10-19 |
Family
ID=4836079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200707 Withdrawn CN88200707U (en) | 1988-01-29 | 1988-01-29 | Grinding wheel main-shaft supporting structure for surface grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88200707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108642A (en) * | 2015-09-21 | 2015-12-02 | 玉林市玉博机械有限公司 | Grinding head spindle structure |
-
1988
- 1988-01-29 CN CN 88200707 patent/CN88200707U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108642A (en) * | 2015-09-21 | 2015-12-02 | 玉林市玉博机械有限公司 | Grinding head spindle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |