CN204639151U - A kind of Dynamic-static pressure main shaft device - Google Patents
A kind of Dynamic-static pressure main shaft device Download PDFInfo
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- CN204639151U CN204639151U CN201520163678.1U CN201520163678U CN204639151U CN 204639151 U CN204639151 U CN 204639151U CN 201520163678 U CN201520163678 U CN 201520163678U CN 204639151 U CN204639151 U CN 204639151U
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- static pressure
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Abstract
A kind of Dynamic-static pressure main shaft device, belongs to the working-spindle technical field of lathe, comprises main shaft, front thrust lid, front support cover, sleeve, rear support cover and rear thrust lid; Before and after described main shaft, both sides are arranged with front support cover and rear support cover respectively; Described front support cover and rear support cover concentric are arranged; Described front support cover and rear support cover are arranged with sleeve; Described sleeve rear and front end is equipped with front thrust lid and rear thrust lid respectively.Before and after dynamic and static pressure main shaft, support section only carrys out supporting spindle with copper sheathing, without bearing, reduces the friction of main shaft and miscellaneous part, effectively make use of the working method of liquid oil dynamic and static pressure, ensure that the stable operation of main shaft.
Description
Technical field
The utility model belongs to the working-spindle technical field of lathe, is particularly related to a kind of Dynamic-static pressure main shaft device.
Background technology
Digit Control Machine Tool is just towards ultra-high speed and ultraprecise future development, and machine tool chief axis determines the performance level of lathe as the core component of Digit Control Machine Tool.Dynamic and static pressure main shaft, because of advantages such as its excellent high speed performance, high damping, high rotating accuracy, high rigidity, little damping and long-lives, is widely used in high-speed precise machine tool field.The mixing of dynamic and static pressure main shaft make use of hydrostatic effects and dynamic pressure effect.The dynamic pressure cavity acting in conjunction relying on static-pressure oil chamber and main shaft and bearing to be formed when starting and work carries outer lotus, and oil film has high stiffness.
The main shaft device of prior art comprises main shaft, bearing, bearing block, fore bearing gland and rear bearing gland.Owing to employing bearing, during startup, main shaft and bearing easily produce contact wear, dynamic pressure effect still slightly aobvious shortcoming during work.
The hydrostatic spindle of prior art comprises main shaft, fore bearing, rear bearing, fore bearing gland, rear bearing gland, bearing inner wall offers several uniform oil pockets, bearing also offers oil-feed aperture, fueller is by oil-feed aperture directly to fuel feeding in oil pocket, and the oil in bearing is back in fuel tank by the gap at bearing two ends.Hydrostatic spindle is no matter stopping or oil pressure under duty in its main shaft is certain, and the carrying of main shaft is lower.And owing to employing front and back gland, in order to prevent fluid from flowing to sleeve two ends, need gland to install oil sealing or sealing ring additional before and after main shaft, its circuit after oil return is full of in sleeve, produces back pressure force fluid to flow out drain tap.On the one hand, oil sealing or sealing ring under the erosion of liquid oil, and are subject to the impact of high temperature, friction etc., and its life-span obviously shortens, and easily loses efficacy; On the other hand, oil sealing or sealing ring, when main shaft works, under being in the effect of high pressure, its sealing effectiveness is difficult to ensure, easy leakage of oil.
Utility model content
The purpose of this utility model is to overcome the above-mentioned defect mentioned and deficiency, and provides a kind of Dynamic-static pressure main shaft device.
The technical scheme that the utility model realizes the employing of its object is as follows.
A kind of Dynamic-static pressure main shaft device, comprises main shaft, front thrust lid, front support cover, sleeve, rear support cover and rear thrust lid; Before and after described main shaft, both sides are arranged with front support cover and rear support cover respectively; Described front support cover and rear support cover concentric are arranged; Described front support cover and rear support cover are arranged with sleeve; Described sleeve rear and front end is equipped with front thrust lid and rear thrust lid respectively.
Described sleeve offers oil-in, in-line, oil return line and oil return opening; Described oil-in is connected with in-line; The end of described in-line overlaps with front support and is connected with rear support cover; Described oil return line is connected with oil return opening; The front end of described oil return line is overlapped with front support and is connected with rear support cover.
Described front-end of spindle is provided with protruding prelocalization ring; Overlap phase mutual connection with front support inside described prelocalization ring to face, arranged outside has front gasket ring; Described foremast ring set is located at main shaft, and between front thrust lid and prelocalization ring; Described prelocalization ring set is provided with radial adjustment pad; Described radial direction adjustment pad is between prelocalization ring and front thrust lid; Described in-line is connected with the outside of prelocalization ring with after front gasket ring through radial adjustment pad.
Described oil return line is connected with the outside of prelocalization ring with front gasket ring through radial adjustment pad.
Described front-end of spindle is provided with protruding draining ring, and described draining ring is positioned at the outside of prelocalization ring; The outside sheathed front thrust lid of described draining ring, described front thrust covers the discharge outlet being provided with and adapting with draining ring.
This Dynamic-static pressure main shaft device has following beneficial effect:
1. before and after dynamic and static pressure main shaft, support section only carrys out supporting spindle with copper sheathing, without bearing, reduces the friction of main shaft and miscellaneous part, effectively make use of the working method of liquid oil dynamic and static pressure, ensure that the stable operation of main shaft;
2. dynamic and static pressure main shaft is provided with specific Hui Youlu, and oil return just flows out oil return opening naturally without the need to being full of in sleeve.Therefore, effectively can prevent the liquid oil at main shaft two ends from leaking, meanwhile, also facilitate the dynamic pressure of adjustment main shaft.
figure of description
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is main axle structure schematic diagram of the present utility model;
In figure: thrust lid after thrust lid, 201-discharge outlet, 300-front support cover, 400-sleeve, 401-oil-in, 402-in-line, 403-oil return line, 404-oil return opening, 500-rear support cover, 600-before 100-main shaft, 101-draining ring, 102-prelocalization ring, 200-,
Gasket ring, 800-radial direction adjustment pad before 700-.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of Dynamic-static pressure main shaft device, comprises main shaft 100, front thrust lid 200, front support cover 300, sleeve 400, rear support cover 500, rear thrust lid 600.
Before and after main shaft 100, both sides are arranged with front support cover 300 and rear support cover 500 respectively.Described front support cover 300 and rear support are overlapped 500 concentrics and are arranged.
Sleeve 400 is provided with outside described front support cover 300 and rear support cover 500.Described sleeve 400 rear and front end is equipped with front thrust lid 200 and rear thrust lid 600 respectively.
Described sleeve 400 offers oil-in 401, in-line 402, oil return line 403 and oil return opening 404.
Described oil-in 401 is connected with in-line 402.End and the front support of described in-line 402 are overlapped 300 and are overlapped 500 with rear support and be connected.Described oil return line 403 is connected with oil return opening 404.Front end and the front support of described oil return line 403 are overlapped 300 and are overlapped 500 with rear support and be connected.
When pressure oil is full of main shaft 100 and sleeve 400 two ends, main shaft 100 is suspended in the center of sleeve 400 by the oil film that pressure oil produces, and the pressure oil of main shaft 100 surrounding is static pressure to the pressure of main shaft.When driven by motor main shaft 100 rotates, pressure oil is with the motion of main shaft 100 direction of rotation, and oil pocket inner fluid pressure increases, and main shaft 100 rotates faster, and oily cavity pressure is larger, and the pressure of pressure oil to main shaft 100 of main shaft 100 surrounding is larger, and it is dynamic pressure.
Described main shaft 100 front end is provided with protruding prelocalization ring 102.Overlap 300 phase mutual connections inside described prelocalization ring 102 to face with front support, arranged outside has front gasket ring 700.Described front gasket ring 700 is sheathed on main shaft 100, and between front thrust lid 200 and prelocalization ring 102.Described prelocalization ring 102 is arranged with radial adjustment pad 800.Described radial direction adjustment pad 800 is between prelocalization ring 102 and front thrust lid 200.Described in-line 402 is connected with the outside of prelocalization ring 102 with front gasket ring 700 is rear through radial adjustment pad 800.Like this, prelocalization ring 102 both sides are all subject to the effect of hydraulic oil, balanced main shaft 100 stressed.Described oil return line 403 is connected with the outside of prelocalization ring 102 with front gasket ring 700 through radial adjustment pad 800.The hydraulic oil of main shaft 100 front end through oil return line 403 oil return to oil return opening 404.Therefore, this main shaft device, achieves from backflow.
Described main shaft 100 front end is provided with protruding draining ring 101, and described draining ring 101 is positioned at the outside of prelocalization ring 102.The outside sheathed front thrust lid 200 of described draining ring 101, described front thrust lid 200 is provided with the discharge outlet 201 adapted with draining ring 101.Draining ring 101 plays the effect of blocking cooling water, prevents cooling water from entering main shaft 100 inner.Draining ring 101 outside diameter is greater than inside diameter, is conducive to water dumping, cuts off water inlet.Through the cooling water that draining ring 101 blocks, discharge from discharge outlet 201.
The utility model is illustrated according to embodiment, and under the prerequisite not departing from present principles, this device can also make some distortion and improvement.It should be pointed out that and all drop on the technical scheme that all employings are equal to replacement or the mode such as equivalent transformation and obtain in protection domain of the present utility model.
Claims (5)
1. a Dynamic-static pressure main shaft device, is characterized in that, comprises main shaft (100), front thrust lid (200), front support cover (300), sleeve (400), rear support cover (500) and rear thrust lid (600); Before and after described main shaft (100), both sides are arranged with front support cover (300) and rear support cover (500) respectively; Described front support cover (300) and rear support cover (500) concentric are arranged; Described front support cover (300) and rear support cover (500) are arranged with sleeve (400); Described sleeve (400) rear and front end is equipped with front thrust lid (200) and rear thrust lid (600) respectively.
2. a kind of Dynamic-static pressure main shaft device as claimed in claim 1, is characterized in that, described sleeve (400) offers oil-in (401), in-line (402), oil return line (403) and oil return opening (404); Described oil-in (401) is connected with in-line (402); The end of described in-line (402) is connected with rear support cover (500) with front support cover (300); Described oil return line (403) is connected with oil return opening (404); The front end of described oil return line (403) is connected with rear support cover (500) with front support cover (300).
3. a kind of Dynamic-static pressure main shaft device as claimed in claim 2, is characterized in that, described main shaft (100) front end is provided with protruding prelocalization ring (102); Described prelocalization ring (102) inner side is faced with front support cover (300) phase mutual connection, and arranged outside has front gasket ring (700); Described front gasket ring (700) is sheathed on main shaft (100), and is positioned between front thrust lid (200) and prelocalization ring (102); Described prelocalization ring (102) is arranged with radial adjustment pad (800); Described radial direction adjustment pad (800) is positioned between prelocalization ring (102) and front thrust lid (200); Described in-line (402) is connected with the outside of prelocalization ring (102) with front gasket ring (700) afterwards through radial adjustment pad (800).
4. a kind of Dynamic-static pressure main shaft device as claimed in claim 3, is characterized in that, described oil return line (403) is connected with the outside of prelocalization ring (102) with front gasket ring (700) through radial adjustment pad (800).
5. a kind of Dynamic-static pressure main shaft device as claimed in claim 2, is characterized in that, described main shaft (100) front end is provided with protruding draining ring (101), and described draining ring (101) is positioned at the outside of prelocalization ring (102); The outside sheathed front thrust lid (200) of described draining ring (101), described front thrust lid (200) is provided with the discharge outlet (201) adapted with draining ring (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163678.1U CN204639151U (en) | 2015-03-23 | 2015-03-23 | A kind of Dynamic-static pressure main shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163678.1U CN204639151U (en) | 2015-03-23 | 2015-03-23 | A kind of Dynamic-static pressure main shaft device |
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| Publication Number | Publication Date |
|---|---|
| CN204639151U true CN204639151U (en) | 2015-09-16 |
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ID=54091930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520163678.1U Active CN204639151U (en) | 2015-03-23 | 2015-03-23 | A kind of Dynamic-static pressure main shaft device |
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| Country | Link |
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| CN (1) | CN204639151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826864A (en) * | 2019-03-26 | 2019-05-31 | 威海奥威尔精密部件有限公司 | A kind of long-lived static main shaft |
| CN111707386A (en) * | 2020-06-28 | 2020-09-25 | 上海理工大学 | Dynamic and static pressure main shaft bearing temperature and dynamic pressure testing structure device |
-
2015
- 2015-03-23 CN CN201520163678.1U patent/CN204639151U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826864A (en) * | 2019-03-26 | 2019-05-31 | 威海奥威尔精密部件有限公司 | A kind of long-lived static main shaft |
| CN109826864B (en) * | 2019-03-26 | 2021-08-31 | 威海奥威尔精密部件有限公司 | Durable static main shaft |
| CN111707386A (en) * | 2020-06-28 | 2020-09-25 | 上海理工大学 | Dynamic and static pressure main shaft bearing temperature and dynamic pressure testing structure device |
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