CN114434323B - High-rigidity numerical control grinding wheel dressing motorized spindle - Google Patents
High-rigidity numerical control grinding wheel dressing motorized spindle Download PDFInfo
- Publication number
- CN114434323B CN114434323B CN202111674834.7A CN202111674834A CN114434323B CN 114434323 B CN114434323 B CN 114434323B CN 202111674834 A CN202111674834 A CN 202111674834A CN 114434323 B CN114434323 B CN 114434323B
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- Prior art keywords
- spindle
- box body
- main shaft
- grinding wheel
- motor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/017—Devices or means for dressing, cleaning or otherwise conditioning lapping tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The application discloses a high-rigidity numerical control grinding wheel finishing motorized spindle, wherein the whole motorized spindle is arranged in a box body and a motor sleeve, a layer of heat insulation plate is arranged in the box body and the motor sleeve, the spindle is arranged in the box body through four angular contact ball bearings at the front end, an inner spacer bush, an outer spacer bush and a tight nut, a sealing structure is arranged, the front end of the spindle is connected with a diamond roller through a flange, a rotor is arranged at the rear end of the spindle and is matched with a stator arranged in the motor sleeve, the stator comprises a stator iron core and a stator coil, and the motor is sleeved at the rear side of a machine case. According to the application, the head of the main shaft is arranged in the box body by using four bearings, so that the rigidity of the main shaft is improved, the motor is arranged at the rear end of the main shaft, the heat insulation plate and the appearance of the motor box reduce the influence of heat expansion and cold contraction, and the rigidity of the main shaft is further improved.
Description
Technical Field
The application belongs to the field of machining, and particularly relates to a high-rigidity numerical control grinding wheel dressing motorized spindle.
Background
In the field of machining, a diamond wheel is utilized to trim a grinding wheel to enable the grinding wheel to be molded, and the quality of the grinding wheel trimming directly influences the quality of machined parts. The transmission mode of the diamond wheel rotating shaft is that a small motor drives a mechanical main shaft through a belt at present, and the mode is driven by the belt, so that the defect is that the vibration is large, the precision is low, and the belt is easy to slip and lose rotation. Although the patent CN 203045508U has been improved on the general transmission mode, the front and rear ends of the motorized spindle are respectively fixed by two bearings, but the ratio of the width of the two bearings at the front end of the spindle to the width of the diamond roller to the bearing is very small, so that the rigidity is insufficient, the motor rotor and the stator are in the middle, and the influence of heat on the spindle is also very large.
Disclosure of Invention
The application aims to solve the problems in the prior art and provide an electric spindle which has higher rigidity, can be flexibly controlled and can improve the processing precision.
The technical solution for realizing the purpose of the application is as follows: the high rigidity numerical control grinding wheel dressing motorized spindle has the whole spindle in a box body and a motor sleeve, the spindle motor is wrapped by the motor sleeve, the other part of the spindle motor is arranged in the box body, and the box body and the motor sleeve are separated by a heat insulating plate.
Further, the front end of the main shaft is arranged in the box body through an angular contact ball bearing, an inner spacer bush, an outer spacer bush and a tight nut, and the rear end of the main shaft is provided with a rotor which is matched with a stator in the motor sleeve.
Further, an inner spacer bush is arranged on the side face of the front end of the main shaft, an outer spacer bush is arranged on the periphery of the inner spacer bush, two opposite angle contact ball bearings are respectively arranged on two sides of the inner spacer bush and the outer spacer bush, and the outer spacer bush is fixed on the box body so as to limit the axial position of the main shaft.
Further, the inner spacer bush, the outer spacer bush and the angular contact ball bearing are fixed through a tight nut.
Further, the outer spacer bush is fixed on the box body through a pin.
Further, key grooves are formed in two sides of the rear end of the main shaft, a flat key is arranged in the key grooves, a rotor is arranged on the flat key, a motor sleeve with a stator inside is sleeved at the rear end of the main shaft, the stator is matched with the rotor, and the motor sleeve is fixed on the box body.
Further, a gland is arranged on the end face of the rear end of the main shaft and used for pressing the main shaft.
Further, an end cover is arranged on the end face of the motor sleeve, which is positioned at one side of the rear end of the main shaft.
Further, a quick hose connector is arranged on the end cover.
Further, the motor sleeve and the box body are provided with heat dissipation grooves.
Compared with the prior art, the application has the remarkable advantages that:
1) Compared with the structure of two front bearings and one rear bearing of the traditional electric spindle, the front end of the electric spindle is provided with the first second bearing, the two bearings are provided with the inner spacer bush and the outer spacer bush, and the third bearing and the fourth bearing are arranged, so that the whole stress bearing area is increased, and the rigidity of the spindle is improved;
2) The motor part arranged at the rear end of the main shaft is separated from the front box body through the heat insulation plate, and the heat dissipation groove is arranged on the motor sleeve, so that the influence of heat expansion and cold contraction is reduced, and the rigidity of the main shaft is further improved;
3) The front end of the structure is used for installing the position of the diamond roller, the distance from the front bearing is smaller, and meanwhile, the bearing span is larger relative to the stress position of the roller, so that the actual geometric precision of the front end of the whole motorized spindle is higher, and the higher grinding wheel dressing precision is achieved.
The application is described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic cross-sectional structure of an electric spindle in one embodiment.
Fig. 2 is a schematic cross-sectional structure of an electric spindle in one embodiment.
In the figure, the reference numeral 1 is a box body, 2 is an inner spacer bush, 3 is an outer spacer bush, 4 is a precise nut, 5-1, 5-2, 5-3, 5-4 are angular contact ball bearings, 6 is a motor sleeve, 7 is a pin, 8 is an end cover, 9 is a quick hose connector, 13 is a main shaft, 14 is a gland, 20 is a stator, 21 is a rotor, 22-1, 22-2 are flat keys, and 23 is a heat insulation layer.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It should be noted that, in the embodiment of the present application, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In one embodiment, in combination with fig. 1-2, a high-rigidity numerical control grinding wheel dressing motorized spindle is provided, the whole spindle 13 is arranged in a box body 1 and a motor sleeve 6, the spindle motor is wrapped by the motor sleeve 6, the other part of the spindle motor is arranged in the box body 1, and the box body 1 and the motor sleeve 6 are separated by a heat insulation plate 23. The front end of the main shaft 13 is arranged in the box body 1 through four angular contact ball bearings, an inner spacer bush, an outer spacer bush and a tight nut, a sealing structure is arranged, the front end of the main shaft is connected with a diamond roller through a flange, a rotor is arranged at the rear end of the main shaft and is matched with a stator in a motor sleeve, and the stator comprises a stator core and a stator coil.
Further, in one embodiment, the front end side of the spindle 13 is provided with an inner spacer 2, the periphery of the inner spacer 2 is provided with an outer spacer 3, two opposite angle contact ball bearings (5-1, 5-2, 5-3, 5-4) are respectively arranged on two sides of the inner spacer and the outer spacer 3, and the outer spacer 3 is fixed on the box 1 to limit the axial position of the spindle.
Further, in one of the embodiments, the inner spacer 2, the outer spacer 3 and the angular contact ball bearing are fixed by a close nut 4.
Further, in one of the embodiments, the outer spacer 3 is fixed to the case 1 by a pin 7.
Further, in one embodiment, two sides of the rear end of the main shaft are provided with key grooves, two flat keys (22-1, 22-2) are installed in the key grooves, a rotor 21 is installed on the flat keys, a motor sleeve 6 with a stator 20 inside is sleeved at the rear end of the main shaft, the rotor is matched with the stator, and the motor sleeve 6 is fixed on the box body 1.
Further, in one embodiment, a gland 14 is provided on the end face of the rear end of the spindle, for pressing the spindle.
Further, in one embodiment, an end cover 8 is provided on the end face of the motor sleeve 6 located at the rear end side of the spindle.
Further, in one of the embodiments, the end cap 8 is provided with a quick hose connector 9 for introducing and removing electrical wires.
The foregoing has outlined and described the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims.
Claims (7)
1. The high-rigidity numerical control grinding wheel dressing motorized spindle is characterized in that the whole spindle is arranged in a box body and a motor sleeve, the spindle motor is wrapped by the motor sleeve, the other part of the spindle motor is arranged in the box body, and the box body and the motor sleeve are separated by a heat insulation plate;
the front end of the main shaft is arranged in the box body through an angular contact ball bearing, an inner spacer bush, an outer spacer bush and a tight nut, and the rear end of the main shaft is provided with a rotor which is matched with a stator in the motor sleeve;
an inner spacer bush is arranged on the side surface of the front end of the main shaft, an outer spacer bush is arranged on the periphery of the inner spacer bush, two opposite angle contact ball bearings are respectively arranged on two sides of the inner spacer bush and the outer spacer bush, and the outer spacer bush is fixed on the box body so as to limit the axial position of the main shaft;
the motor sleeve with the stator inside is sleeved at the rear end of the main shaft, the stator of the motor sleeve is matched with the rotor, and the motor sleeve is fixed on the box body.
2. The high stiffness numerically controlled grinding wheel truing motorized spindle of claim 1, wherein the inner spacer, outer spacer, and angular contact ball bearing are secured by a close nut.
3. The high stiffness numerically controlled grinding wheel truing motorized spindle of claim 1, wherein the outer spacer is secured to the housing by pins.
4. The high-rigidity numerical control grinding wheel dressing motorized spindle according to claim 1, wherein a gland is provided on the end face of the rear end of the spindle for pressing the spindle.
5. The high-rigidity numerical control grinding wheel dressing motorized spindle according to claim 4, wherein an end cover is arranged on the end face of the motor sleeve on one side of the rear end of the spindle.
6. The high stiffness numerically controlled grinding wheel truing motorized spindle of claim 5, wherein the end cap is provided with a quick hose connector.
7. The high-rigidity numerical control grinding wheel dressing motorized spindle according to claim 1, wherein the motor sleeve and the box body are provided with heat dissipation grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674834.7A CN114434323B (en) | 2021-12-31 | 2021-12-31 | High-rigidity numerical control grinding wheel dressing motorized spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674834.7A CN114434323B (en) | 2021-12-31 | 2021-12-31 | High-rigidity numerical control grinding wheel dressing motorized spindle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114434323A CN114434323A (en) | 2022-05-06 |
| CN114434323B true CN114434323B (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111674834.7A Active CN114434323B (en) | 2021-12-31 | 2021-12-31 | High-rigidity numerical control grinding wheel dressing motorized spindle |
Country Status (1)
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| CN (1) | CN114434323B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697435A (en) * | 2009-10-28 | 2010-04-21 | 沈阳建筑大学 | High-speed electric main shaft for mixed use of outer ring of steel bearing and inner ring of ceramic bearing |
| CN201537703U (en) * | 2009-10-28 | 2010-08-04 | 沈阳建筑大学 | Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft |
| CN102126030A (en) * | 2011-03-04 | 2011-07-20 | 昆山森力玛电机有限公司 | Direct-drive motorized spindle of lathe |
| CN201940618U (en) * | 2011-03-04 | 2011-08-24 | 昆山森力玛电机有限公司 | Direct-driving electric spindle of lathe |
| RU2011120555A (en) * | 2011-05-20 | 2012-11-27 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Дальневосточный Федеральный Университет" (Двфу) | ELECTRIC SPINDLE |
| JP2014059060A (en) * | 2013-10-17 | 2014-04-03 | Nsk Ltd | Multi-row combination angular contact ball bearing |
| CN204431056U (en) * | 2015-04-20 | 2015-07-01 | 恽孝震 | A kind of emery wheel trimming device |
| WO2016063691A1 (en) * | 2014-10-23 | 2016-04-28 | 日本精工株式会社 | Combination ball bearing and main shaft device for machine tool |
| CN106984836A (en) * | 2017-04-21 | 2017-07-28 | 东华大学 | A kind of built-in dynamic/static piezoelectric main shaft of high-speed, high precision |
| CN107225509A (en) * | 2017-06-09 | 2017-10-03 | 上海理工大学 | Emery wheel dresser |
| CN209239074U (en) * | 2018-11-21 | 2019-08-13 | 上海机床厂有限公司 | The high rotating accuracy static pressure electric main shaft of high rigidity |
| CN110666194A (en) * | 2019-11-15 | 2020-01-10 | 厦门欣同翔数控科技有限公司 | Electric spindle |
| CN211135551U (en) * | 2019-11-15 | 2020-07-31 | 厦门欣同翔数控科技有限公司 | Electricity main shaft heat insulation structure |
-
2021
- 2021-12-31 CN CN202111674834.7A patent/CN114434323B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201537703U (en) * | 2009-10-28 | 2010-08-04 | 沈阳建筑大学 | Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft |
| CN101697435A (en) * | 2009-10-28 | 2010-04-21 | 沈阳建筑大学 | High-speed electric main shaft for mixed use of outer ring of steel bearing and inner ring of ceramic bearing |
| CN102126030A (en) * | 2011-03-04 | 2011-07-20 | 昆山森力玛电机有限公司 | Direct-drive motorized spindle of lathe |
| CN201940618U (en) * | 2011-03-04 | 2011-08-24 | 昆山森力玛电机有限公司 | Direct-driving electric spindle of lathe |
| RU2011120555A (en) * | 2011-05-20 | 2012-11-27 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Дальневосточный Федеральный Университет" (Двфу) | ELECTRIC SPINDLE |
| JP2014059060A (en) * | 2013-10-17 | 2014-04-03 | Nsk Ltd | Multi-row combination angular contact ball bearing |
| WO2016063691A1 (en) * | 2014-10-23 | 2016-04-28 | 日本精工株式会社 | Combination ball bearing and main shaft device for machine tool |
| CN204431056U (en) * | 2015-04-20 | 2015-07-01 | 恽孝震 | A kind of emery wheel trimming device |
| CN106984836A (en) * | 2017-04-21 | 2017-07-28 | 东华大学 | A kind of built-in dynamic/static piezoelectric main shaft of high-speed, high precision |
| CN107225509A (en) * | 2017-06-09 | 2017-10-03 | 上海理工大学 | Emery wheel dresser |
| CN209239074U (en) * | 2018-11-21 | 2019-08-13 | 上海机床厂有限公司 | The high rotating accuracy static pressure electric main shaft of high rigidity |
| CN110666194A (en) * | 2019-11-15 | 2020-01-10 | 厦门欣同翔数控科技有限公司 | Electric spindle |
| CN211135551U (en) * | 2019-11-15 | 2020-07-31 | 厦门欣同翔数控科技有限公司 | Electricity main shaft heat insulation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114434323A (en) | 2022-05-06 |
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