CN103394713B - The main shaft device of machining tool - Google Patents
The main shaft device of machining tool Download PDFInfo
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- CN103394713B CN103394713B CN201310346132.5A CN201310346132A CN103394713B CN 103394713 B CN103394713 B CN 103394713B CN 201310346132 A CN201310346132 A CN 201310346132A CN 103394713 B CN103394713 B CN 103394713B
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- main shaft
- shell
- ring
- ball bearing
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Abstract
The invention discloses a kind of main shaft device of machining tool, comprise the main shaft being positioned at shell, one end of described main shaft is stretched out from shell, the dismountable external part being fixed on described main shaft of one cutter chuck, be provided with clutch shaft bearing parts between the front end of described main shaft and shell, between the rear end of main shaft and shell, be provided with the second parts of bearings; These clutch shaft bearing parts comprise Centering compensation unit; This second parts of bearings comprises detection faces and detection faces is carried out to the test section of flatness detection, this main shaft device high lubricating effect, avoids the mid-winter of bearing, and provides centering ilities, can carry out feeding back and compensating when skew occurs main shaft, ensure that the smooth and easy of processing and precision.
Description
Technical field
The present invention relates to the spindle technology of machining tool, particularly relate to that a kind of precision is high, the main shaft device of the machining tool of anti-leak.
Background technology
Conventional lathe is all provided with fixed bearing and instrument and carry out pivotal main shaft, by the axis direction front end at machine tool chief axis, is installed on the multiple types of tools of tool holder respectively, can carries out multiple machining.
In existing lathe, tool holder have for clamping tool handle releasedly movable pinch unit and make the motor unit of movable pinch unit movement between handle off-position and handle clamped position, be contained in the axis direction through hole of main shaft.The motor unit of tool holding mechanism is driven by the driving mechanism (such as hydraulic cylinder mechanism) of spindle head device outside, along with the axis direction of self in main shaft through hole moves, movable pinch unit is moved.
In recent years, in order to highly-efficient processing, the bearing that spindle device for machine tool uses advances the high speed of main shaft, and existing cylinder roller bearing has: the outer ring on inner peripheral surface with outer ring raceway; Outer peripheral face has the inner ring of inner ring raceway; Roll the multiple rollers be arranged at freely between outer ring raceway and inner ring raceway; And there is the retainer in the multiple pocket holes for keeping multiple roller.
In such bearing, easily cause the discharge of lubricant to be deteriorated, cause cylinder roller bearing mid-winter; When carrying out grease lubrication, after by grease filled bearing, in order to make enclosed lubricating grease scatter equably at Bearing inner, or in order to make residue lubricating grease move along bearing periphery, so-called trial run is indispensable.Thus easily cause the discharge of lubricant to be deteriorated, and trial run spended time is long.And under the high temperature conditions, bearing centering is deteriorated, and makes machining accuracy reduce.
Thus, the required problem solved of prior art is that rolling bearing easily mid-winter occurs when lubricant is too much, and needs to keep good centering in high-speed motion.
For this reason, designer of the present invention is by concentrating on studies and designing, and comprehensive experience and the achievement being engaged in related industry for a long time for many years, research and design goes out a kind of main shaft device of machining tool, to overcome above-mentioned defect.
Summary of the invention
The object of the present invention is to provide a kind of main shaft device of machining tool, its structure is simple, high lubricating effect, avoid the mid-winter of bearing, and provide centering ilities, can carry out feeding back and compensating when skew occurs main shaft, ensure that the smooth and easy of processing and precision.
For achieving the above object, the invention discloses a kind of main shaft device of machining tool, it is characterized in that comprising the main shaft being positioned at shell, one end of described main shaft is stretched out from shell, the dismountable external part being fixed on described main shaft of a cutter chuck,
Be provided with clutch shaft bearing parts between the front end of described main shaft and shell, between the rear end of main shaft and shell, be provided with the second parts of bearings;
These clutch shaft bearing parts comprise front ball bearing, rear ball bearing and the pushing portion between front ball bearing and rear ball bearing, be respectively equipped with groove at the contact site of described pushing portion and front ball bearing and rear ball bearing, in described groove, be provided with Centering compensation unit;
This second parts of bearings comprises inner ring, outer shroud and the multiple rollers between inner ring outer shroud, inner position ring is provided with outside described inner ring, described inner position ring is fixed on described main shaft, the outside of described outer shroud is provided with outer positioning ring, described outer positioning ring is fixed on described shell, and inner position ring is formed with a detection faces, described outer positioning ring is provided with test section detection faces being carried out to flatness detection.
Wherein: described Centering compensation unit comprises a micromachine and screw rod retractor device.
Wherein: a lubricating fluid supply unit is described clutch shaft bearing parts and the second parts of bearings supply lubricating oil by lubricating fluid pipeline;
Described shell is also provided with vacuum passing away, and one end of described vacuum passing away is communicated with described clutch shaft bearing parts, and the other end connects a vacuum generating unit, thus can removal of lubricant fast, ensure that the unimpeded of lubricating fluid, further avoid intensification during high speed.
Wherein: be provided with the stator that drive shaft rotates and the rotor be fixed on described main shaft between described main shaft and described shell, described stator is connected to control unit.
Wherein: between described stator and shell, be provided with air ring, described air ring has multiple cooling bath, in described shell, be provided with temperature detector.
By said structure, the main shaft device of machining tool of the present invention achieves following technique effect:
1, high lubricating effect, avoids mid-winter during high speed, ensure that the temperature stabilization in manufacture process;
2, there is detecting unit and centering accessory, Real-Time Monitoring carried out to main shaft, occur skew time can compensate in time, avoid bearing heat up time small centrifugal, achieve better centring property;
3, main shaft spin stabilization, centring property is good, and the cylinder roller bearing of rear end and the ball bearing of front end can provide good stability.
The present invention will be further described in detail by the following specific embodiments, and will be more apparent and obvious to understand further combined with the description of the drawings.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the main shaft device of machining tool of the present invention.
Fig. 2 shows the structural representation of clutch shaft bearing parts of the present invention.
Fig. 3 shows the enlarged diagram of the present invention second parts of bearings.
Fig. 4 shows main shaft device of the present invention and is applied to schematic diagram on lathe.
Reference numeral:
11: main shaft; 12: shell; 13: stator; 14: air ring; 15: cutter chuck; 16: cutter shaft; 17: cooling bath; 18: temperature detector; 19: clutch shaft bearing parts; 20: the second parts of bearings; 21: lubricating fluid supply unit; 22: vacuum generating unit; 23: front ball bearing; 24: rear ball bearing; 25: pushing portion; 26: retainer; 27: groove; 28: Centering compensation unit; 29: vacuum passing away; 30: inner ring; 31: outer shroud; 32: roller; 33: retainer; 34: inner position ring; 35: outer positioning ring; 36: test section; 37: detection faces; 101: board; 102: workbench; 103: column; 104: vertical moving part; 105: power part; 106: move left and right portion; 107: processing head; 108: spindle unit; 109: cutter.
Detailed description of the invention
See Fig. 1, show the main shaft device of machining tool of the present invention.
Described main shaft device comprises the main shaft 11 being positioned at shell 12, one end of described main shaft 11 is stretched out from shell 12, the dismountable external part being fixed on described main shaft 11 of one cutter chuck 15, one cutter shaft 16 is dismountable to be held in described cutter chuck 15, known as shown in the figure, described cutter chuck 15 is fixed on the external part of described main shaft 11 by ball groove structure, and the bare terminal end of described cutter chuck 15 is taper.
The stator 13 that drive shaft 11 rotates and the rotor be fixed on described main shaft 11 is provided with between described main shaft 11 and described shell 12, described stator 13 is connected to control unit, when stator energising, generates an electromagnetic field, driving rotor rotates, and rotor then drives described main shaft 11 to carry out High Rotation Speed.
For lowering the temperature, air ring 14 is provided with between described stator 13 and shell 12, described air ring 14 has multiple cooling bath, for avoiding high temperature, be provided with temperature detector 18 in described shell 12, to detect in time, described temperature detector 18 is connected to control unit, upload in real time and record temperature, to report to the police in time, avoid security incident.
Clutch shaft bearing parts 19 are provided with between the front end of described main shaft 11 and shell 12, the second parts of bearings 20 is provided with between the rear end of main shaft 11 and shell 12, one lubricating fluid supply unit 21 is that described clutch shaft bearing parts 19 and the second parts of bearings 20 supply lubricating oil by lubricating fluid pipeline, optionally, described lubricating fluid supply unit 21 comprises oil pump, magnetic valve and grease-box, the switch of solenoid control supply oil circuit, oil pump is responsible in grease-box, extracting lubricating oil supplying, can not mid-winter when ensure that high speed.
Optionally, the front outer of described shell 12 is provided with multiple annular cooling bath 17, and described annular cooling bath 17 is surrounded by a covering part, to improve the cooling effect of shell 12 front end.
For realizing the smooth discharge of lubricating oil, described shell 12 is also provided with vacuum passing away, one end of described vacuum passing away is communicated with described clutch shaft bearing parts 19, the other end connects a vacuum generating unit 22, and optionally, described vacuum generating unit 22 is a vavuum pump, by the setting of vacuum generating unit 22, can removal of lubricant fast, ensure that the unimpeded of lubricating fluid, further avoid intensification during high speed.
As shown in the figure, described clutch shaft bearing parts 19 can be ball bearing, and described second parts of bearings 20 can be cylinder roller bearing.
Optionally, described clutch shaft bearing parts 19 and the second parts of bearings 20 are equipped with temperature detecting unit, and described temperature detecting unit is connected to control unit, to carry out temperature detection to described clutch shaft bearing parts 19 and the second parts of bearings 20 in time.
See Fig. 2, show the concrete structure of clutch shaft bearing parts 19, these clutch shaft bearing parts 19 comprise front ball bearing 23, rear ball bearing 24 and the pushing portion 25 between front ball bearing 23 and rear ball bearing 24, each ball bearing is equipped with the retainer 26 keeping ball in interior rolling, groove 27 is respectively equipped with at the contact site of described pushing portion 25 and front ball bearing 23 and rear ball bearing 24, Centering compensation unit 28 is provided with in described groove 27, described Centering compensation unit 28 can to front, rear ball bearing provides a thrust respectively, an eccentric force is provided to main shaft to order about bearing, compensate the eccentric rotary of main shaft, described Centering compensation unit 28 is connected to control unit, preferably, described Centering compensation unit 28 comprises a micromachine and screw rod retractor device.
See also Fig. 2, described vacuum passing away 29 is communicated between described front ball bearing 23 and rear ball bearing 24, with when needed, provides a vacuum adsorption force of front ball bearing 23 and rear ball bearing 24, accelerates the velocity of discharge of lubricating fluid.
See Fig. 3, show the concrete structure of the second parts of bearings 20, this second parts of bearings 20 comprises inner ring 30, outer shroud 31 and the multiple rollers 32 between inner ring outer shroud, and one keeps described multiple roller rotatable retainer 33 between inner ring outer shroud.
Inner position ring 34 is provided with outside described inner ring 30, described inner position ring 34 is fixed on described main shaft 11, the outside of described outer shroud 31 is provided with outer positioning ring 35, described outer positioning ring 35 is fixed on described shell 12, and inner position ring 34 is formed with a detection faces 37, described outer positioning ring 35 is provided with the test section 36 detection faces 37 being carried out to flatness detection, optionally, described test section 36 is infrared detector, described test section 36 is aligned with described detection faces 37, and described test section 36 is connected to control unit.
Thus, described test section 36 is by the real-time detection to detection faces 37, the degree of eccentricity of main shaft can be monitored in real time, once occur that the degree of eccentricity exceedes early warning range, then control Centering compensation unit 28 and carry out bias adjustment, owing to being arranged at both direction respectively at Centering compensation unit 28, therefore no matter how eccentric main shaft is, all can realize real-time eccentricity compensation.
See Fig. 4, show the machining tool that main shaft device of the present invention is arranged, described machining tool comprise board 101 and can on board 101 workbench 102 of slide anteroposterior, the both sides, rear end of described board 101 are respectively equipped with column 103, one vertical moving part 104 is movably arranged on described column 103, one driver part (not shown) can drive the vertically movement on described column 103 of described vertical moving part 104, and optionally, described vertical movement component 104 is a spreader.
Described vertical movement component 104 is provided with the portion that moves left and right 106 that can move left and right, the described portion 106 that moves left and right is provided with the power part 105 that it can be driven to carry out movement, thus, by the workbench that can move forward and backward, vertically moving vertical moving part, what can move left and right moves left and right portion, achieves any action in three-dimensional.
The described lower end moving left and right portion 106 is provided with one can the processing head 107 of swing, described processing head 107 comprises a spindle unit 108 and has the cutter 109 of spindle unit 108 driven rotary, optionally, described cutter 109 can be drill bit, milling cutter, the first-class cutting tool of grinding.
Known by foregoing description, the main shaft device tool of machining tool of the present invention has the following advantages:
1, high lubricating effect, avoids mid-winter during high speed, ensure that the temperature stabilization in manufacture process;
2, there is detecting unit and centering accessory, Real-Time Monitoring carried out to main shaft, occur skew time can compensate in time, avoid bearing heat up time small centrifugal, achieve better centring property;
3, main shaft spin stabilization, centring property is good, and the cylinder roller bearing of rear end and the ball bearing of front end can provide good stability.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the present invention do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present invention, scope of the present invention will comprise any embodiment of description and the appended claim fallen into above.
Claims (4)
1. the main shaft device of a machining tool, it is characterized in that comprising the main shaft being positioned at shell, one end of described main shaft is stretched out from shell, the dismountable external part being fixed on described main shaft of one cutter chuck, be provided with clutch shaft bearing parts between the front end of described main shaft and shell, between the rear end of main shaft and shell, be provided with the second parts of bearings; These clutch shaft bearing parts comprise front ball bearing, rear ball bearing and the pushing portion between front ball bearing and rear ball bearing, be respectively equipped with groove at the contact site of described pushing portion and front ball bearing and rear ball bearing, in described groove, be provided with Centering compensation unit; This second parts of bearings comprises inner ring, outer shroud and the multiple rollers between inner ring outer shroud, inner position ring is provided with outside described inner ring, described inner position ring is fixed on described main shaft, the outside of described outer shroud is provided with outer positioning ring, described outer positioning ring is fixed on described shell, and inner position ring is formed with a detection faces, described outer positioning ring is provided with test section detection faces being carried out to flatness detection.
2. the main shaft device of machining tool as claimed in claim 1, is characterized in that: described Centering compensation unit comprises a micromachine and screw rod retractor device.
3. the main shaft device of machining tool as claimed in claim 1, is characterized in that: be provided with the stator that drive shaft rotates and the rotor be fixed on described main shaft between described main shaft and described shell, described stator is connected to control unit.
4. the main shaft device of machining tool as claimed in claim 3, is characterized in that: be provided with air ring between described stator and shell, described air ring has multiple cooling bath, be provided with temperature detector in described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346132.5A CN103394713B (en) | 2013-08-10 | 2013-08-10 | The main shaft device of machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346132.5A CN103394713B (en) | 2013-08-10 | 2013-08-10 | The main shaft device of machining tool |
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| Publication Number | Publication Date |
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| CN103394713A CN103394713A (en) | 2013-11-20 |
| CN103394713B true CN103394713B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310346132.5A Active CN103394713B (en) | 2013-08-10 | 2013-08-10 | The main shaft device of machining tool |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181532B (en) * | 2015-04-29 | 2018-11-09 | 无锡博华机电有限公司 | Central water outlet automatic tool changing electrical spindle negative pressure dehumidifier protection against leakage structure |
| CN109848445B (en) * | 2019-04-01 | 2020-11-03 | 湖南广播电视大学 | Machine tool spindle device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11289713A (en) * | 1998-03-31 | 1999-10-19 | Ntn Corp | Static pressure pneumatic bearing spindle device |
| EP0875685B1 (en) * | 1997-04-28 | 2004-11-03 | Ntn Corporation | Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same |
| CN101185975A (en) * | 2003-03-31 | 2008-05-28 | 日本精工株式会社 | Main shaft device and machine tool with the same |
| CN101596605A (en) * | 2009-05-06 | 2009-12-09 | 北京北超伺服技术有限公司 | Electric spindle of lathe |
-
2013
- 2013-08-10 CN CN201310346132.5A patent/CN103394713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0875685B1 (en) * | 1997-04-28 | 2004-11-03 | Ntn Corporation | Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same |
| JPH11289713A (en) * | 1998-03-31 | 1999-10-19 | Ntn Corp | Static pressure pneumatic bearing spindle device |
| CN101185975A (en) * | 2003-03-31 | 2008-05-28 | 日本精工株式会社 | Main shaft device and machine tool with the same |
| CN101596605A (en) * | 2009-05-06 | 2009-12-09 | 北京北超伺服技术有限公司 | Electric spindle of lathe |
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| CN103394713A (en) | 2013-11-20 |
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