CN201791982U - Static-pressure bracket main spindle box - Google Patents
Static-pressure bracket main spindle box Download PDFInfo
- Publication number
- CN201791982U CN201791982U CN2010202571796U CN201020257179U CN201791982U CN 201791982 U CN201791982 U CN 201791982U CN 2010202571796 U CN2010202571796 U CN 2010202571796U CN 201020257179 U CN201020257179 U CN 201020257179U CN 201791982 U CN201791982 U CN 201791982U
- Authority
- CN
- China
- Prior art keywords
- main spindle
- spindle box
- static pressure
- static
- journal bearing
- 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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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a heavy horizontal lathe main spindle box with static-pressure unloading brackets. In the static-pressure bracket main spindle box, one or more static-pressure brackets are arranged between a front radial bearing and a flower disk of the main spindle box; a main spindle and the flower disk are fixedly arranged together; the front radial bearing, a rear radial bearing and the static-pressure brackets are fixedly arranged on the box body of the main spindle box respectively; and an axial bearing is arranged at the rear end of the main spindle. According to the structure of the main spindle box of the utility model, most weight of the flower disk and a workpiece can be unloaded, so that high-precision rotation of the main spindle is guaranteed. According to detection, when the static-pressure bracket main spindle box of the utility model is applied to a numerical control heavy horizontal lathe capable of bearing 500 tons of objects, the radial runout of the main spindle can reach 0.006 millimeter.
Description
Affiliated field
The utility model relates to the main spindle box device of heavy horizontal lathe, particularly is provided with the main spindle box of static pressure off-load carriage.
Background technology
The heavy horizontal lathe main spindle box is carried on below 200 tons at present, and what generally adopt is the two point supporting construction that preceding journal bearing and back journal bearing are formed.Along with the development of heavy horizontal lathe, particularly CNC heavy-duty horizontal lathe, load-bearing has met or exceeded 500 tons, and this just requires lathe headstock that bigger bearing capacity and the rotating accuracy of Geng Gao are arranged.In the real work, heavy horizontal lathe workpiece weight and the deadweight floral disc end that concentrates on over half of main shaft floral disc, therefore original two point supporting construction can not satisfy the requirement of lathe carrying and precision.
Summary of the invention
The purpose of this utility model is at deficiency of the prior art with in order to satisfy the development need of modern CNC heavy-duty horizontal lathe, and a kind of main spindle box device that makes main shaft still can guarantee high-precision rotary under big carrying is provided.
The technical solution that the said static pressure holder of the utility model main spindle box adopts is: before main spindle box between journal bearing and the floral disc, be provided with one or more static pressure holder, be used for shedding most of weight of floral disc and workpiece, to guarantee the high-precision rotary of main shaft.Its formation comprises main shaft, floral disc, main spindle box casing, preceding journal bearing, back journal bearing, static pressure holder, cod.Main shaft and floral disc are solidly installed, and turn round in preceding journal bearing, back journal bearing and static pressure holder.Preceding journal bearing, back journal bearing and static pressure holder are packed in respectively on the main spindle box casing, and preceding journal bearing, back journal bearing and static pressure holder have higher axiality requirement in processing and installation process.Cod is installed in rear-end of spindle, is used for bearing the main shaft axial load.
Through check, the said static pressure holder of the utility model main spindle box has been applied on the CNC heavy-duty horizontal lathe of 500 tons of carryings, and the main shaft circular runout can reach 0.006 millimeter.
Description of drawings
Fig. 1, heavy horizontal lathe main spindle box structural representation sketch;
Fig. 2, whole static pressure carrier structure simplified schematic diagram;
Fig. 3, split static pressure carrier structure simplified schematic diagram;
Fig. 4, three static pressure carrier structure simplified schematic diagram;
Fig. 5, six static pressure carrier structure simplified schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the structure and the principle of static pressure holder main spindle box described in the utility model is further described and illustrates.
In Fig. 1, floral disc 5 and main shaft 3 are solidly installed, before main spindle box between journal bearing 4 and the floral disc 5, be provided with one or more static pressure holder 6, static pressure holder 6 is packed on the main spindle box casing, when lathe is worked, the deadweight of the weight of workpiece and floral disc 5 all acts on an end of the close floral disc of main shaft, preceding journal bearing 4 and back journal bearing 1 are packed on the main spindle box casing, preceding journal bearing 4 and back journal bearing 1 can be that rolling bearing also can be a hydrostatic bearing, because static pressure holder 6 sheds most of weight of workpiece and floral disc 5, can guarantee the high-precision rotary of main shaft 3 and floral disc 5.In main shaft 3 rear ends, back journal bearing 1 both sides can be provided with one group of cod 2, are used for bearing the main shaft axial load.
Because static pressure holder 6 sheds most of weight of workpiece and floral disc 5, according to the workpiece of Different Weight with because of out-of-shape produces eccentric workpiece, and the different speed of gyration of main shaft 3 and floral disc 5, can change the number and the structure of static pressure holder 6 according to actual conditions.Be that example is made related description only now with the structure of Fig. 2, Fig. 3, Fig. 4, several static pressure holders 6 shown in Figure 5.
Fig. 2 is whole static pressure holder structure schematic diagram, and its structural rigidity is good, is used in processing weight big (can reach 500 tons or more than) and off-centre and is not on the too serious workpiece.
Fig. 3 is a split static pressure holder structure schematic diagram, is made up of jointly the static pressure holder 6 of two separation, and it is easy for installation, is used in processing weight big (being no more than 200 tons) and off-centre and is not on the too serious workpiece.
Fig. 4 is three static pressure holder structure schematic diagrames, on the basis of whole static pressure holder structure, increases by two supplemental support in addition with static pressure holder 6 on the periphery of main shaft, can be used on processing weight big (can reach 500 tons or more than) and the eccentric more serious workpiece.
Fig. 5 is six static pressure holder structure schematic diagrames, the main shaft periphery six static pressure holders 6 are set up and down, when requiring spindle rotation accuracy higher, can adopt this structure.
In a word, utilize the said static pressure holder of the utility model main spindle box, can adopt whole static pressure holder as required, perhaps on the basis of split static pressure holder structure, on the periphery of main shaft, increase the static pressure holder of several supplemental support.Though not statement one by one is the object that the utility model is protected in this manual.
Claims (5)
1. static pressure holder main spindle box, its formation comprises main shaft, floral disc, main spindle box casing, preceding journal bearing, back journal bearing, static pressure holder, cod, it is characterized in that, before main spindle box between journal bearing and the floral disc, be provided with one or more static pressure holder, main shaft and floral disc are solidly installed, and preceding journal bearing, back journal bearing and static pressure holder are packed in respectively on the main spindle box casing.
2. according to the said static pressure holder of claim 1 main spindle box, it is characterized in that said cod is installed in rear-end of spindle.
3. according to the said static pressure holder of claim 1 main spindle box, it is characterized in that said cod is arranged on journal bearing both sides, back.
4. according to the said static pressure holder of claim 1 main spindle box, it is characterized in that said preceding journal bearing and back journal bearing are rolling bearings.
5. according to the said static pressure holder of claim 1 main spindle box, it is characterized in that said preceding journal bearing and back journal bearing are hydrostatic bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202571796U CN201791982U (en) | 2010-07-14 | 2010-07-14 | Static-pressure bracket main spindle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202571796U CN201791982U (en) | 2010-07-14 | 2010-07-14 | Static-pressure bracket main spindle box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201791982U true CN201791982U (en) | 2011-04-13 |
Family
ID=43846904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202571796U Expired - Fee Related CN201791982U (en) | 2010-07-14 | 2010-07-14 | Static-pressure bracket main spindle box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201791982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972858A (en) * | 2010-07-14 | 2011-02-16 | 武汉重型机床集团有限公司 | Hydrostatic support spindle box |
-
2010
- 2010-07-14 CN CN2010202571796U patent/CN201791982U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972858A (en) * | 2010-07-14 | 2011-02-16 | 武汉重型机床集团有限公司 | Hydrostatic support spindle box |
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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: 20110413 Termination date: 20170714 |