CN109531411B - High-power grinding main shaft structure - Google Patents
High-power grinding main shaft structure Download PDFInfo
- Publication number
- CN109531411B CN109531411B CN201811627913.0A CN201811627913A CN109531411B CN 109531411 B CN109531411 B CN 109531411B CN 201811627913 A CN201811627913 A CN 201811627913A CN 109531411 B CN109531411 B CN 109531411B
- Authority
- CN
- China
- Prior art keywords
- end bearing
- main shaft
- spindle
- rear end
- spacer
- 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.)
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Links
- 230000003247 decreasing effect Effects 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention discloses a high-power grinding spindle structure, which comprises a box body with a through hole, and a front end bearing, a spindle motor and a rear end bearing which are sequentially arranged in the box body, wherein the outer circumferential diameters of the front end bearing, the spindle motor and the rear end bearing are sequentially decreased, the outer side wall of the front end bearing and the outer side wall of the spindle motor are respectively abutted against the inner side wall of the through hole, the rear end of the through hole is provided with an annular necking part, and the outer side wall of the rear end bearing is abutted against the inner circumferential surface of the necking part.
Description
Technical Field
The invention relates to the field of machine tool structures, in particular to a high-power grinding spindle structure.
Background
The existing motor center-mounted grinding spindle structure is characterized in that a spindle motor is arranged between a front end bearing and a rear end bearing and generally comprises a box body and a spindle motor, and the peripheral diameter of the spindle of the motor is larger than that of the front end bearing, so that at least one end of the box body needs to be made into a larger opening when the spindle motor is assembled, and the spindle motor and the bearing are sealed by a sleeve after being assembled. Bearings for supporting the spindle motor are mounted in the front and rear sleeves. In such a mounting manner, the front and rear sleeves and the case main body need to be separately processed, so that an assembly error is easily formed, and the main shaft body is long in length and poor in rigidity, so that the stability is insufficient during rotation.
When a machine tool processes a part, if the rigidity is insufficient, the precision of the part is poor, the reject ratio is increased, and generally, in order to ensure the processing precision, the feed amount of each time is reduced, but the processing beat is affected, so that the yield is affected.
Disclosure of Invention
The invention aims to provide a high-power grinding main shaft structure with strong stability and simple structure.
The technical scheme adopted by the invention is as follows:
the utility model provides a high-power grinding spindle structure, includes the box that possesses the through-hole and sets gradually front end bearing, spindle motor and the rear end bearing in the box, and the outer circumference diameter of front end bearing, spindle motor and rear end bearing is progressively decreased in proper order, and the inside wall of through-hole is all contradicted to the lateral wall of front end bearing and the lateral wall of spindle motor, and the rear end of through-hole is equipped with annular throat portion, and the interior periphery of the interior wall conflict throat portion of rear end bearing is contradicted to the lateral wall of rear end bearing.
Further as the improvement of the technical scheme of the invention, the spindle motor comprises a spindle body, a stator and a rotor, wherein the rotor is coaxial with the spindle body and fixedly connected with the spindle body, and one end of the stator is abutted against the inner side end face of the shrinkage part.
Further as the improvement of the technical scheme of the invention, the main shaft body is also sleeved with a front spacer bush, the front spacer bush is positioned at the inner side of the front end bearing and is abutted against the inner ring of the front end bearing, the outer side of the front end bearing is provided with a front spacer bush and a front flange for limiting, the front spacer bush is abutted against the inner ring of the front end bearing, and the front flange is abutted against the outer ring of the front end bearing.
Further as the improvement of the technical scheme of the invention, the main shaft body is also sleeved with the rear spacer bush and the rear flange, the rear spacer bush and the rear flange are both positioned at the outer side of the rear end bearing, the rear spacer bush is abutted with the inner ring of the rear end bearing, and the rear flange is abutted with the outer ring of the rear end bearing.
Further as an improvement of the technical scheme of the invention, the inner side of the rear end bearing is also provided with a rear space ring, one side of the rear end bearing is fixedly connected with the main shaft body and the rotor, and the other side of the rear space ring is abutted against the inner ring of the rear end bearing.
Further as the improvement of the technical scheme of the invention, the front end of the main shaft body is also provided with a waterproof cover, the waterproof cover is positioned at the outer side of the front flange, and a drainage structure is arranged between the waterproof cover and the main shaft body.
Further as the improvement of the technical scheme of the invention, the drainage structure comprises a plurality of annular drainage grooves arranged on the main shaft body, a plurality of drainage holes are arranged on the waterproof cover, and each drainage groove is at least communicated with one drainage hole.
Further as an improvement of the technical scheme of the invention, a framework sealing ring is arranged between the front flange and the main shaft body.
Further as an improvement of the technical scheme of the invention, the main shaft body is also sleeved with a sheath, the sheath is positioned at the outer side of the rear flange, and a framework sealing ring is arranged between the sheath and the main shaft body.
Further as the improvement of the technical scheme of the invention, the main shaft body is also sleeved with a high-precision encoder.
The invention has the beneficial effects that: the outer circumference diameters of the front end bearing, the spindle motor and the rear end bearing are sequentially decreased, so that holes for installing the front end bearing, the spindle motor and the rear end bearing are directly arranged on the box body, the holes are installed one by one, the box body is only required to be machined from one side of the box body during machining, the holes can be directly machined through one-time clamping, the machining precision of the holes is improved, the spindle is directly installed in the box body, the coaxiality of the front end bearing, the rear end bearing and the through holes in the box body can be improved, the coaxiality of the through holes in the spindle motor and the box body is improved, the rotation precision is improved, meanwhile, the structure is more compact, and the rotating stability of the spindle motor is further improved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the external structure of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a schematic diagram of the internal structure of an embodiment of the present invention;
fig. 4 is an enlarged view of the structure of the front end of the spindle according to the embodiment of the present invention;
fig. 5 is an enlarged view of the structure of the rear end of the spindle according to the embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 5, the present invention is a high-power grinding spindle structure, comprising a housing 1 having a through hole, and a front end bearing 3, a spindle motor 2 and a rear end bearing 4 sequentially disposed in the housing 1, wherein the outer circumferential diameters of the front end bearing 3, the spindle motor 2 and the rear end bearing 4 decrease in sequence, the outer side wall of the front end bearing 3 abuts against the inner side wall of the through hole, the rear end of the through hole is provided with an annular necking part 12, the outer side wall of the rear end bearing 4 abuts against the inner circumferential surface of the necking part 12, and the front end bearing 3 and the rear end bearing 4 are in transitional connection with the through hole.
The spindle motor 2 comprises a spindle body 22, a stator 5 and a rotor 51, wherein the rotor is coaxial with the spindle body 22 and fixedly connected with the spindle body, and one end of the stator 5 abuts against the inner end face of the shrinkage part.
Specifically, the shrinkage portion 12 is mainly used for limiting the position of the stator 5, and guaranteeing the stability of the stator 5. Since the outer circumferential diameters of the front end bearing 3, the spindle motor 2 and the rear end bearing 4 are sequentially decreased, holes for mounting the front end bearing 3, the spindle motor 2 and the rear end bearing 4 can be directly formed in the case 1 and can be filled one by one during mounting.
Through holes for installing the front end bearing 3, the rear end bearing 4 and the spindle motor 2 can be completely machined in one-time clamping of the box body 1, and coaxiality of all positions of the through holes is improved, so that coaxiality of the front end bearing 3, the rear end bearing 4, the spindle body 22 and the rotor 51 is improved, and stability of rotation of the spindle body 22 is improved. When the structure is used for processing the box body 1, namely the conventional box body 1 and sleeves at two ends of the conventional box body are combined into a whole, the installation of front and rear sleeves at two ends of the conventional box body 1 is omitted, the accumulated errors generated by the installation of the front and rear sleeves are avoided, the overall accuracy of the main shaft is improved, and meanwhile, the overall rigidity of the main shaft structure is greatly increased.
As a preferred embodiment of the present invention, the main shaft body 22 is further sleeved with a front spacer 6, the front spacer 6 is located at the inner side of the front end bearing 3 and is in contact with the inner ring of the front end bearing 3, a round nut for locking is further arranged at the inner side of the front spacer 6, a front spacer 7 and a front flange 8 for limiting are arranged at the outer side of the front end bearing 3, the front spacer 7 is in contact with the inner ring of the front end bearing 3, and the front flange 8 is in contact with the outer ring of the front end bearing 3. Specifically, the front spacer 6 and the front spacer 7 serve to restrict the inner ring of the front end bearing 3, and the front flange 8 serves to restrict the outer ring of the front end bearing 3. The front spacer bush 6, the front spacer ring 7 and the front flange 8 form a positioning and clamping structure of the front end bearing 3, so that the stability of the front end bearing 3 is ensured.
As a preferred embodiment of the invention, the main shaft body 22 is also sleeved with a rear spacer bush 9 and a rear flange 10, the rear spacer bush 9 and the rear flange 10 are both positioned on the outer side of the rear end bearing 4, a round nut used for locking is further arranged on the outer side of the rear flange 10, the rear spacer bush 9 is abutted against the inner ring of the rear end bearing 4, and the rear flange 10 is abutted against the outer ring of the rear end bearing 4.
As a preferred embodiment of the present invention, a rear spacer 13 is further provided on the inner side of the rear end bearing 4, and one side of the rear end bearing 4 is fixedly connected to the main shaft body 22 and the rotor 51, and the other side of the rear spacer 13 abuts against the inner ring of the rear end bearing 4.
Specifically, the rear spacer bush 9, the rear flange 10 and the rear spacer ring 13 form a positioning and clamping structure of the rear end bearing 4, so that the stability of the front end bearing 3 is ensured. The spacer 13 then also serves to fixedly connect the main shaft body 22 to the rotor 51.
In a preferred embodiment of the present invention, the front end of the main shaft body 22 is further provided with a waterproof cover 14, the waterproof cover 14 is located outside the front flange 8, and a drainage structure is provided between the waterproof cover 14 and the main shaft body 22.
As a preferred embodiment of the present invention, the drainage structure includes a plurality of annular drainage grooves 21 provided on the main shaft body 22, a plurality of drainage holes 141 are provided on the waterproof cover 14, and each drainage groove 21 is at least communicated with one drainage hole 141.
In the processing, a liquid such as a coolant needs to be sprayed to the workpiece, and the liquid may enter the case 1. A waterproof cover 14 and a drainage structure are thus provided. When the liquid enters the waterproof cover 14, the liquid is collected in the drain groove 21, and is thrown outward by centrifugal force when the main shaft body 22 rotates, and is discharged through the drain hole 141 provided on the waterproof cover 14.
As a preferred embodiment of the present invention, a skeleton seal ring 15 is further provided between the front flange 8 and the main shaft body 22.
As a preferred embodiment of the invention, the main shaft body 22 is further sleeved with a sheath 18, the sheath 18 is positioned at the outer side of the rear flange 10, a framework sealing ring 15 is further arranged between the sheath 18 and the main shaft body 22, the sheath 18 has the functions of dust prevention and water prevention, and the framework sealing ring 15 has the sealing function.
In a preferred embodiment of the present invention, the spindle body 22 is also provided with a high-precision encoder 16.
As a preferred embodiment of the present invention, the grinding wheel correction spindle 17 and its driving device are also fixedly connected to the casing 1.
The present invention is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and these equivalent modifications or substitutions are intended to be included in the scope of the present invention as defined in the claims.
Claims (8)
1. A high-power grinding main shaft structure is characterized in that: including box (1) and the setting gradually that possess the through-hole front end bearing (3), spindle motor (2) and rear end bearing (4) in box (1), the outer circumference diameter of front end bearing (3), spindle motor (2) and rear end bearing (4) is decreasing gradually, the lateral wall of front end bearing (3) and the lateral wall of spindle motor (2) all conflict the inside wall of through-hole, the rear end of through-hole is equipped with annular throat portion (12), the medial wall of rear end bearing (4) is contradicted the interior periphery of throat portion (12), spindle motor (2) include spindle body (22), stator (5) and rotor (51), rotor (51) coaxial and fixedly link to each other with spindle body (22), the one end of stator (5) is contradicted the medial surface of throat portion (12), the inboard of rear end bearing (4) still is equipped with back spacer ring (13), one side of rear end bearing (4) is contradicted with spindle body (22) and rotor (51) fixed connection, the spacer ring (13) behind the inner ring (4).
2. The high power grinding spindle structure of claim 1, wherein: the novel spindle is characterized in that a front spacer (6) is further sleeved on the spindle body (22), the front spacer (6) is located on the inner side of the front end bearing (3) and is abutted against the inner ring of the front end bearing (3), a front spacer (7) and a front flange (8) used for limiting are arranged on the outer side of the front end bearing (3), the front spacer (7) is abutted against the inner ring of the front end bearing (3), and the front flange (8) is abutted against the outer ring of the front end bearing (3).
3. The high power grinding spindle structure of claim 1, wherein: the main shaft body (22) is further sleeved with a rear spacer bush (9) and a rear flange (10), the rear spacer bush (9) and the rear flange (10) are both positioned on the outer side of the rear end bearing (4), the rear spacer bush (9) is abutted against the inner ring of the rear end bearing (4), and the rear flange (10) is abutted against the outer ring of the rear end bearing (4).
4. The high power grinding spindle structure of claim 2, wherein: the front end of the main shaft body (22) is also provided with a waterproof cover (14), the waterproof cover (14) is positioned at the outer side of the front flange (8), and a drainage structure is arranged between the waterproof cover (14) and the main shaft body (22).
5. The high power grinding spindle structure of claim 4, wherein: the water draining structure comprises a plurality of annular water draining grooves (21) arranged on a main shaft body (22), a plurality of water draining holes (141) are formed in the waterproof cover (14), and each water draining groove (21) is at least communicated with one water draining hole (141).
6. The high power grinding spindle structure of claim 2, wherein: and a framework sealing ring (15) is further arranged between the front flange (8) and the main shaft body (22).
7. A high power grinding spindle structure according to claim 3, characterized in that: the main shaft body (22) is further sleeved with a sheath (18), the sheath (18) is located on the outer side of the rear flange (10), and a framework sealing ring (15) is further arranged between the sheath (18) and the main shaft body (22).
8. The high power grinding spindle structure of claim 1, wherein: the main shaft body (22) is also sleeved with a high-precision encoder (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627913.0A CN109531411B (en) | 2018-12-28 | 2018-12-28 | High-power grinding main shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627913.0A CN109531411B (en) | 2018-12-28 | 2018-12-28 | High-power grinding main shaft structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109531411A CN109531411A (en) | 2019-03-29 |
| CN109531411B true CN109531411B (en) | 2024-03-12 |
Family
ID=65857819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811627913.0A Active CN109531411B (en) | 2018-12-28 | 2018-12-28 | High-power grinding main shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109531411B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142877A (en) * | 2019-05-21 | 2019-08-20 | 上海雄博精密仪器股份有限公司 | Small-sized main axle unit for optical mirror slip edge polisher |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011148015A (en) * | 2010-01-19 | 2011-08-04 | Nsk Ltd | Main spindle device and machine tool with the same |
| CN203599542U (en) * | 2013-11-20 | 2014-05-21 | 广州市昊志机电股份有限公司 | Shaft core assembly of high-speed electric ball spindle |
| CN105081383A (en) * | 2015-09-06 | 2015-11-25 | 烟台环球机床附件集团有限公司 | Power-off protection device for servo turret |
| CN205394123U (en) * | 2016-03-01 | 2016-07-27 | 宁波海天精工股份有限公司 | Crouch and add front -end of spindle protection machanism |
| CN106180764A (en) * | 2016-08-08 | 2016-12-07 | 纽威数控装备（苏州）有限公司 | A kind of vertical lathe spindle cellular construction |
| CN209394491U (en) * | 2018-12-28 | 2019-09-17 | 广州市威嘉机床有限公司 | A kind of high-power grinding spindle structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7036991B2 (en) * | 2004-07-20 | 2006-05-02 | Davenport Machine, Inc. | High-precision spindle assembly for a davenport automatic screw machine |
-
2018
- 2018-12-28 CN CN201811627913.0A patent/CN109531411B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011148015A (en) * | 2010-01-19 | 2011-08-04 | Nsk Ltd | Main spindle device and machine tool with the same |
| CN203599542U (en) * | 2013-11-20 | 2014-05-21 | 广州市昊志机电股份有限公司 | Shaft core assembly of high-speed electric ball spindle |
| CN105081383A (en) * | 2015-09-06 | 2015-11-25 | 烟台环球机床附件集团有限公司 | Power-off protection device for servo turret |
| CN205394123U (en) * | 2016-03-01 | 2016-07-27 | 宁波海天精工股份有限公司 | Crouch and add front -end of spindle protection machanism |
| CN106180764A (en) * | 2016-08-08 | 2016-12-07 | 纽威数控装备（苏州）有限公司 | A kind of vertical lathe spindle cellular construction |
| CN209394491U (en) * | 2018-12-28 | 2019-09-17 | 广州市威嘉机床有限公司 | A kind of high-power grinding spindle structure |
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| Publication number | Publication date |
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| CN109531411A (en) | 2019-03-29 |
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