CN103394713A - Main shaft device of machining machine tool - Google Patents
Main shaft device of machining machine tool Download PDFInfo
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- CN103394713A CN103394713A CN2013103461325A CN201310346132A CN103394713A CN 103394713 A CN103394713 A CN 103394713A CN 2013103461325 A CN2013103461325 A CN 2013103461325A CN 201310346132 A CN201310346132 A CN 201310346132A CN 103394713 A CN103394713 A CN 103394713A
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- main shaft
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Abstract
The invention discloses a main shaft device of a machining machine tool. The main shaft device comprises a main shaft located in an outer shell. One end of the main shaft stretches out of the outer shell, a tool chuck is detachably fixed at a stretching-out end of the main shaft, a first bearing component is arranged between the front end of the main shaft and the outer shell, and a second bearing component is arranged between the rear end of the main shaft and the outer shell; the first bearing component comprises a centering compensation unit; the second bearing component comprises a detection face and a detection portion, and flatness detection is carried out on the detection face through the detection portion. The main shaft device has a good lubrication effect, abnormal temperature rising of bearings is avoided, centering auxiliary performance is provided, feedback and compensation can be conducted when the main shaft deviates, and smoothness and precision of machining are guaranteed.
Description
Technical field
The present invention relates to the spindle technology of machining tool, relate in particular to that a kind of precision is high, the main shaft device of the machining tool of anti-leak.
Background technology
Lathe commonly used all is provided with fixed bearing and instrument and carry out rotating main shaft,, by the axis direction front end at machine tool chief axis, is installed on respectively the multiple types of tools of tool holder, can carry out multiple machining.
In existing lathe, tool holder has for the movable clamping unit of clamping tool handle releasedly and makes movable clamping unit mobile motor unit between handle off-position and the tight position of spindle clamp, is contained in the axis direction through hole of main shaft.The motor unit of instrument maintaining body is driven by the driving mechanism (for example hydraulic cylinder mechanism) of spindle head device outside, along with self the axis direction in the main shaft through hole moves, movable clamping unit is moved.
In recent years, for highly-efficient processing, the bearing that uses on spindle device for machine tool has advanced the high speed of main shaft, and existing cylinder roller bearing has: the outer ring that has outer ring raceway on inner peripheral surface; The inner ring that has inner ring raceway on outer peripheral face; Rolling is arranged at a plurality of rollers between outer ring raceway and inner ring raceway freely; And has a retainer be used to a plurality of pockets hole that keeps a plurality of rollers.
In such bearing, easily cause the discharge variation of lubricant, cause the cylinder roller bearing mid-winter; When being lubricated grease lubrication, after with grease filled bearing, in order to make the lubricating grease of enclosing, in bearing inside, scatter equably, perhaps for residue lubricating grease is moved along the bearing periphery, so-called trial run is indispensable.Thereby easily cause the discharge variation of lubricant, and the trial run spended time is long.And under hot conditions, bearing centering variation, reduce machining accuracy.
Thus, the problem of the required solution of prior art is in the situation that lubricant is too much, and the easy abnormal of rolling bearing heats up, and needs the centering that keeps good in high-speed motion.
For this reason, designer of the present invention, by concentrating on studies and designing, comprehensively is engaged in for a long time experience and the achievement of related industry for many years, and 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, it is simple in structure, high lubricating effect, avoided the mid-winter of bearing, and the centering ilities is provided, can has fed back and compensate when skew occur main shaft, guaranteed the smooth and easy and precision of processing.
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 that is positioned at shell, an end of described main shaft stretches out from shell, the dismountable external part that is fixed in described main shaft of a cutter chuck,
Be provided with the clutch shaft bearing parts between the front end of described main shaft and shell, be provided with the second parts of bearings between the rear end of main shaft and shell;
These clutch shaft bearing parts comprise front ball bearing, rear ball bearing and the pushing portion between front ball bearing and rear ball bearing, contact site at described pushing portion and front ball bearing and rear ball bearing is provided with respectively groove, is provided with the Centering compensation unit in described groove;
This second parts of bearings comprises interior ring, outer shroud and a plurality of rollers between interior ring outer shroud, be provided with interior locating ring in the described interior ring outside, described interior locating 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 be formed with a detection faces on interior locating ring, described outer positioning ring is provided with detection faces is carried out the test section that flatness detects.
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 supplying lubricating oil by the lubricating fluid pipeline;
Described shell also is provided with the vacuum passing away, and an end of described vacuum passing away is communicated with described clutch shaft bearing parts, and the other end connects a vacuum generating unit, thereby removal of lubricant has fast guaranteed the unimpeded of lubricating fluid, the intensification while further having avoided high speed.
Wherein: be provided with the stator of drive shaft rotation between described main shaft and described shell and be fixed in rotor on described main shaft, described stator is connected in control module.
Wherein: be provided with air ring between described stator and shell, have a plurality of cooling baths on described air ring, be provided with Temperature Detector in described shell.
By said structure, the main shaft device of machining tool of the present invention has been realized following technique effect:
1, high lubricating effect, the mid-winter while having avoided high speed, guaranteed the temperature stabilization in the manufacture process;
2, have detecting unit and centering accessory, main shaft is carried out Real-Time Monitoring, can in time compensate while skew occurring, small centrifugal while having avoided bearing to heat up, realized 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 stability preferably.
The present invention will be further described in detail by the following specific embodiments, and further combined with the description of the drawings, will be more apparent and obvious to understand.
Description of drawings
Fig. 1 has shown the structural representation of the main shaft device of machining tool of the present invention.
Fig. 2 has shown the structural representation of clutch shaft bearing parts of the present invention.
Fig. 3 has shown the enlarged diagram of the present invention's the second parts of bearings.
Fig. 4 has shown that main shaft device of the present invention is applied to the 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: the clutch shaft bearing parts; 20: the second parts of bearings; 21: the lubricating fluid supply unit; 22: the vacuum generating unit; 23: front ball bearing; 24: rear ball bearing; 25: pushing portion; 26: retainer; 27: groove; 28: the Centering compensation unit; 29: the vacuum passing away; 30: interior ring; 31: outer shroud; 32: roller; 33: retainer; 34: interior locating 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 section; 107: processing head; 108: spindle unit; 109: cutter.
The specific embodiment
, referring to Fig. 1, shown the main shaft device of machining tool of the present invention.
Described main shaft device comprises the main shaft 11 that is positioned at shell 12, one end of described main shaft 11 stretches out from shell 12, the one dismountable external part that is fixed in described main shaft 11 of cutter chuck 15, one cutter shaft 16 is dismountable to be held in described cutter chuck 15, as shown in the figure as can be known, described cutter chuck 15 can be fixed in by the ball groove structure external part of described main shaft 11, and the bare terminal end of described cutter chuck 15 is taper.
Be provided with the stator 13 of drive shaft 11 rotation between described main shaft 11 and described shell 12 and be fixed in rotor on described main shaft 11, described stator 13 is connected in control module,, when the stator energising, generates an electromagnetic field, drive rotor, rotor drives described main shaft 11 and carries out High Rotation Speed.
For lowering the temperature, be provided with air ring 14 between described stator 13 and shell 12, have a plurality of cooling baths on described air ring 14,, for avoiding high temperature, be provided with Temperature Detector 18 in described shell 12, in time to detect, described Temperature Detector 18 is connected to control module, upload in real time and record temperature,, in time to report to the police, avoid security incident.
Be provided with clutch shaft bearing parts 19 between the front end of described main shaft 11 and shell 12, be provided with the second parts of bearings 20 between the rear end of main shaft 11 and shell 12, one lubricating fluid supply unit 21 is described clutch shaft bearing parts 19 and the second parts of bearings 20 supplying lubricating oils by the lubricating fluid pipeline, optionally, described lubricating fluid supply unit 21 comprises oil pump, magnetic valve and grease-box, solenoid control is supplied with the switch of oil circuit, oil pump is responsible for extracting lubricating oil in grease-box and is supplied with, can mid-winter while having guaranteed high speed.
Optionally, the front outer of described shell 12 is provided with a plurality of annular cooling baths 17, and described annular cooling bath 17 is surrounded by a covering section, to improve the cooling effect of shell 12 front ends.
For realizing the smooth discharge of lubricating oil, described shell 12 also is provided with the 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, setting by vacuum generating unit 22, removal of lubricant, guaranteed the unimpeded of lubricating fluid fast, the intensification while further having avoided high speed.
As shown in the figure, described clutch shaft bearing parts 19 can be ball bearing, and described the 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 module, in time described clutch shaft bearing parts 19 and the second parts of bearings 20 are carried out temperature detection.
referring to Fig. 2, the concrete structure that has shown 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 and keeps the retainer 26 of ball in interior rolling, contact site at described pushing portion 25 and front ball bearing 23 and rear ball bearing 24 is provided with respectively groove 27, be provided with Centering compensation unit 28 in described groove 27, described Centering compensation unit 28 can be to front, rear ball bearing provides respectively a thrust, provide an eccentric force to order about bearing to main shaft, compensate the eccentric rotary of main shaft, described Centering compensation unit 28 is connected in control module, preferably, described Centering compensation unit 28 comprises a micromachine and screw rod retractor device.
Referring to Fig. 2, described vacuum passing away 29 is communicated between described front ball bearing 23 and rear ball bearing 24 equally,, 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.
Referring to Fig. 3, shown the concrete structure of the second parts of bearings 20, this second parts of bearings 20 comprises interior ring 30, outer shroud 31 and a plurality of rollers 32 between interior ring outer shroud, and one keeps described a plurality of rollers rotatable retainer 33 between interior ring outer shroud.
Be provided with interior locating ring 34 in described interior ring 30 outsides, described interior locating 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 be formed with a detection faces 37 on interior locating ring 34, described outer positioning ring 35 is provided with detection faces 37 is carried out the test section 36 that flatness detects, 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 in control module.
Thus, described test section 36 is by the real-time detection to detection faces 37, but the degree of eccentricity of Real Time Monitoring main shaft, in case occur that the degree of eccentricity surpasses early warning range, control Centering compensation unit 28 and carry out bias adjustment,, owing in Centering compensation unit 28, being arranged at respectively both direction,, therefore no matter how eccentric main shaft is, all can realize real-time eccentricity compensation.
Referring to Fig. 4, shown the machining tool that main shaft device of the present invention arranges, described machining tool comprise board 101 and can be on board 101 before and after the workbench 102 that slides, the both sides, rear end of described board 101 are respectively equipped with column 103, one vertical moving part 104 movably is arranged on described column 103, one driver part (not shown) can drive described vertical moving part 104 and vertically move on described column 103, and optionally, described vertical sliding dynamic component 104 is a spreader.
Described vertical sliding dynamic component 104 is provided with the section that moves left and right 106 that can move left and right, the described section 106 that moves left and right is provided with and can drives its power part that moves 105, thus, by the workbench that can move forward and backward, vertically moving vertical moving part, the section that moves left and right that can move left and right, realized any action on the three-dimensional.
But the described lower end that moves left and right section 106 is provided with the processing head 107 of a swing, described processing head 107 comprises a spindle unit 108 and the cutter 109 of spindle unit 108 driven rotary is arranged, optionally, described cutter 109 can be drill bit, milling cutter, the first-class cutting tool of grinding.
By foregoing description as can be known, the main shaft device of machining tool of the present invention has following advantage:
1, high lubricating effect, the mid-winter while having avoided high speed, guaranteed the temperature stabilization in the manufacture process;
2, have detecting unit and centering accessory, main shaft is carried out Real-Time Monitoring, can in time compensate while skew occurring, small centrifugal while having avoided bearing to heat up, realized 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 stability preferably.
It is evident that, above description and record are only for example rather than 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 optimal mode that the present invention does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present to be to implement the specific examples of instruction of the present invention, and scope of the present invention will comprise any embodiment of the specification that falls into front and appended claim.
Claims (5)
1. the main shaft device of a machining tool, is characterized in that comprising the main shaft that is positioned at shell, and an end of described main shaft stretches out from shell, the dismountable external part that is fixed in described main shaft of a cutter chuck,
Be provided with the clutch shaft bearing parts between the front end of described main shaft and shell, be provided with the second parts of bearings between the rear end of main shaft and shell;
These clutch shaft bearing parts comprise front ball bearing, rear ball bearing and the pushing portion between front ball bearing and rear ball bearing, contact site at described pushing portion and front ball bearing and rear ball bearing is provided with respectively groove, is provided with the Centering compensation unit in described groove;
This second parts of bearings comprises interior ring, outer shroud and a plurality of rollers between interior ring outer shroud, be provided with interior locating ring in the described interior ring outside, described interior locating 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 be formed with a detection faces on interior locating ring, described outer positioning ring is provided with detection faces is carried out the test section that flatness detects.
2. the main shaft device of machining tool as claimed in claim 1, it 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, it is characterized in that: a lubricating fluid supply unit is described clutch shaft bearing parts and the second parts of bearings supplying lubricating oil by the lubricating fluid pipeline;
Described shell also is provided with the vacuum passing away, and an end of described vacuum passing away is communicated with described clutch shaft bearing parts, and the other end connects a vacuum generating unit, thereby removal of lubricant has fast guaranteed the unimpeded of lubricating fluid, the intensification while further having avoided high speed.
4. the main shaft device of machining tool as claimed in claim 1 is characterized in that: be provided with the stator of drive shaft rotation between described main shaft and described shell and be fixed in rotor on described main shaft, described stator is connected in control module.
5. the main shaft device of machining tool as claimed in claim 4, is characterized in that: be provided with air ring between described stator and shell, have a plurality of cooling baths on described air ring, 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 |
|---|---|
| CN103394713A true CN103394713A (en) | 2013-11-20 |
| CN103394713B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181532A (en) * | 2015-04-29 | 2016-12-07 | 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 |
| CN109848445A (en) * | 2019-04-01 | 2019-06-07 | 湖南广播电视大学 | A kind of lathe main axis 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181532A (en) * | 2015-04-29 | 2016-12-07 | 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 |
| 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 |
| CN109848445A (en) * | 2019-04-01 | 2019-06-07 | 湖南广播电视大学 | A kind of lathe main axis device |
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| Publication number | Publication date |
|---|---|
| CN103394713B (en) | 2015-09-02 |
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