CN109015360B - A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in - Google Patents
A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in Download PDFInfo
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- CN109015360B CN109015360B CN201811030085.2A CN201811030085A CN109015360B CN 109015360 B CN109015360 B CN 109015360B CN 201811030085 A CN201811030085 A CN 201811030085A CN 109015360 B CN109015360 B CN 109015360B
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- Prior art keywords
- grinding wheel
- main shaft
- high speed
- bearing
- wheel spindle
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Abstract
The invention discloses a kind of high speed direct connection accurate grinding grinding wheel spindle systems of electric machine built-in, belong to technical field of mechanical design.The axis system mainly includes main shaft (1), the rotor (2) being integrated is press-fitted with main shaft (1), the motor stator (3) being arranged on the outside of rotor (2), with the grinding wheel spindle (12) of main shaft (1) direct connection, the grinding wheel mounting base (13) being arranged on grinding wheel spindle (12), grinding wheel fastens end plate (14), it is arranged in the intermediate grinding wheel (12) of grinding wheel mounting base (13) grinding wheel fastening end plate (14) and supports three high speed roller bearings of shafting.A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in provided by the invention, innovatively use the technical methods such as electric machine built-in, drive shaft grinding wheel spindle direct connection, the support of three fulcrum types, have compact-sized, revolving speed is high, rigidity is big, the features such as grinding accuracy is high can meet the processing needs of high-accuracy high rigidity grinding.
Description
Technical field
The invention discloses a kind of high speed direct connection accurate grinding grinding wheel spindle systems of electric machine built-in, belong to Machine Design skill
Art field.
Background technique
Grinding spindle is the core functional components of high-accuracy equipment for grinding, and the dynamic and static state performance of principle axis shafting directly decides
The technical performance index of high-accuracy equipment for grinding is related to the final precision of manufacture processing.Traditional abrasive grinding wheel main shaft, frequently with
The mode of electric machine external, is driven by high-frequency electric machines, is driven by belt, and the grinding wheel rotation for being mounted on main shaft projecting end is driven, from
And realize grinding.This main axle structure has transmission accuracy relatively low, and overhanging leads to problems such as stiffness of spindle End insufficient, is difficult full
The grinding of sufficient high speed and precision, high rigidity needs, such as high class gear grinding.
For problem above existing for conventional grinding machine principle axis shafting, the present invention provides a kind of high speed direct connections of electric machine built-in
Accurate grinding grinding wheel spindle system innovatively proposes the skills such as built-in driving motor, grinding wheel and main shaft direct connection, the support of three fulcrum types
Art improves the transmission accuracy of wheel grinding main shaft, improves main axis stiffness.This abrasive grinding wheel axis system grinding accuracy is high,
The high rigidities grinding needs such as high-accuracy gear can be met.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of high speed direct connection accurate grinding grinding wheel main shaftings of electric machine built-in
System overcomes conventional grinding machine grinding wheel spindle shafting there are transmission accuracies lower, the problems such as grinding wheel overhangs arrangement, and grinding stiffness is less than normal,
Meet the processing needs of high-precision, high rigidity grinding.
Technical solution: a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in disclosed by the invention, this hair
It is bright the technical solution adopted is that:
The axis system is supported using bearing, is three fulcrum type supporting way, respectively in the position of shafting left, center, right three
It sets and is respectively arranged with high speed roller bearing, the outer end of main shaft is set on third high speed roller bearing, on the second high speed roller bearing
The outer end of grinding wheel spindle is set, and the first high speed roller bearing is located at centre, and main shaft and sand are arranged on the first high speed roller bearing
The connecting pin of main shaft is taken turns, which substantially increases main axis stiffness；Under working speed, stiffness of a shaft section where the grinding wheel can
It greatly improves.
The axis system mainly includes main shaft, the rotor being integrated with main shaft periphery press-fitting, is arranged in rotor
The motor stator in outside is equipped with motor coolant jacket on the outside of motor stator, main shaft shell is arranged on the outside of motor coolant jacket；Main shaft
The left side is arranged on the bearing cage of left end by third high speed roller bearing, the left end of left end bearing cage and main shaft shell
It is fixed；Third high speed roller bearing is fixed on the bearing cage of left end by left end bearing axis inner ring locking nut.
The right of main shaft is arranged in the first high speed roller bearing, and the first high speed roller bearing is arranged in middle part bearing bearing
In set, middle part bearing cage is fixed in main shaft shell the right；Main shaft right end is connected by main shaft grinding wheel axis connection hold-down mechanism
Grinding wheel spindle.
The periphery setting grinding wheel mounting base and grinding wheel of grinding wheel spindle fasten end plate, and it is high to be fixed on second on the right of grinding wheel spindle
On fast rolling bearing, the second high speed roller bearing passes through in right end bearing outer ring baffle, second bearing outer ring retaining ring, second bearing
Circle retaining ring, right end bearing bearing inner ring locking nut are fixed in grinding wheel spindle shell.
The main shaft is directly placed inside driving motor, is fixed as one by press-fitting method with rotor, and motor turns
Son directly drives main shaft high speed rotation, is not necessarily to conventional drives, compact-sized, high transmission accuracy.
The main shaft directly passes through conical surface interface with grinding wheel spindle and connect, and avoids using shaft coupling connection bring revolution
Angle, coaxiality error problem, improve transmission accuracy.
The utility model has the advantages that a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in disclosed by the invention, innovation
The technologies such as ground uses electric machine built-in, main shaft and grinding wheel direct connection, three fulcrum types support, main axle structure is compact, and limit speed is high, just
Degree is big, and grinding accuracy is high, can meet the processing needs of high-accuracy high rigidity grinding.
Detailed description of the invention
Fig. 1 is the topology layout of the high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in.
Have in figure: main shaft 1, rotor 2, motor stator 3, motor coolant jacket 4, middle part bearing inner ring locking nut 5, in
Portion's bearing cage 6, the first high speed roller bearing 7, first bearing outer ring retaining ring 8, first bearing inner ring retaining ring 9, middle part bearing
Outer ring locking nut 10, grinding wheel spindle 11, grinding wheel mounting base 12, grinding wheel 13, grinding wheel fasten end plate 14, right end bearing bearing block
15, right end bearing outer ring baffle 16, the second high speed roller bearing 17, second bearing outer ring retaining ring 18, second bearing inner ring retaining ring
19, right end bearing bearing inner ring locking nut 20, main shaft right end cap 21, bearing pre-tightened spring 22, bearing pre-tightened pressing plate 23, main shaft
Grinding wheel axis connection hold-down mechanism 24, third high speed roller bearing 25, left end bearing cage 26, left end bearing axis inner ring locking screw
Female 27, main shaft shell 28, grinding wheel spindle shell 29.
Specific embodiment
The high speed direct connection accurate grinding grinding wheel spindle system of a kind of electric machine built-in disclosed by the invention, as shown in Figure 1, the master
Axle system mainly include main shaft 1, rotor 2, motor stator 3, motor coolant jacket 4, middle part bearing inner ring locking nut 5, in
Portion's bearing cage 6, the first high speed roller bearing 7, first bearing outer ring retaining ring 8, first bearing inner ring retaining ring 9, middle part bearing
Outer ring locking nut 10, grinding wheel spindle 11, grinding wheel mounting base 12, grinding wheel 13, grinding wheel fasten end plate 14, right end bearing bearing block
15, right end bearing bearing outer ring baffle 16, the second high speed roller bearing 17, second bearing outer ring retaining ring 18, second bearing inner ring
Retaining ring 19, right end bearing bearing inner ring locking nut 20, main shaft right end cap 21, bearing pre-tightened spring 22, bearing pre-tightened pressing plate 23,
Main shaft grinding wheel axis connection hold-down mechanism 24, third high speed roller bearing 25, left end bearing cage 26, left end bearing axis inner ring lock
Tight nut 27, main shaft shell 28 and grinding wheel spindle shell 29.Wherein, the press-fitting of main shaft 1 and rotor 2 be installed as one it is whole
Body, motor stator 3 are arranged between rotor 2 and motor coolant jacket 4, and motor coolant jacket 4 is arranged inside main shaft shell 28；
First high speed roller bearing 7 is mounted between main shaft 1 and middle part bearing cage 6, is equipped with first bearing outer ring in the middle part of bearing
Retaining ring 8, first bearing inner ring retaining ring 9, bearing left end is locked by middle part bearing inner ring locking nut 5, during bearing right end passes through
Portion's bearing outer ring locking nut 10 is locked；Grinding wheel spindle 11 is connect with main shaft 1 by conical surface interface, is arranged in the middle part of grinding wheel spindle 11
There is grinding wheel mounting base 12, grinding wheel 13 is mounted in grinding wheel mounting base 12, and right end fastens end plate 14 by grinding wheel and is locked；Right end
Bearing bearing block 15 is sleeved on 11 right end of grinding wheel spindle, and the second high speed roller bearing 17 is mounted on right end bearing bearing block 15 and sand
It takes turns between main shaft shell 29, bearing left end passes through right end bearing by 16 axial limiting of right end bearing outer ring baffle, bearing right end
Inner ring locking nut 20 is locked, and bearing pre-tightened spring 22 is placed between bearing pre-tightened pressing plate 23 and main shaft right end cap 21,
Main shaft right end cap 21 is connected by bolt with shafting shell, the compression bearing preloading spring 22 mobile to the left under bolt effect,
Compressed bearing pre-tightened spring 22 pushes bearing pre-tightened pressing plate 23 to move to the left, and bearing pre-tightened pressing plate 23 passes preload pressure
It is handed on the second high speed roller bearing 17, to realize bearing pre-tightened；Main shaft grinding wheel axis connection hold-down mechanism 24 is arranged in grinding wheel
Inside main shaft, mechanism is integrally moved to the left under bolt effect, squeezes conical surface pawl mouth radial dilatation, is forced in pawl mouth and main shaft 1
Wall pressure tightly locks, to realize grinding wheel spindle 11 and 1 direct connection of main shaft；The installation of main shaft left end third high speed roller bearing 25 and master
Between axis 1 and left end bearing cage 26, left end is locked by left end bearing axis inner ring locking nut 27.
Main shaft 1 is placed on inside driving motor by electric machine built-in, is fixed with one by press-fitting method and rotor 2, electricity
Machine rotor 2 directly drives 1 high speed rotation of main shaft, and rotor is main shaft, compact-sized, is not necessarily to transmission mechanism, transmission accuracy
It is high.
Main shaft and grinding wheel spindle direct connection, main shaft 1 are directly connected to grinding wheel spindle 2 by conical surface interface, right end main shaft grinding wheel
Axis connection hold-down mechanism 24 is moved to the left under bolt effect, squeezes conical surface pawl mouth radial dilatation, and pawl mouth and 1 inner wall of main shaft compress
Locked, this direct connection structure avoids traditional shaft coupling connection bring rotational angle, axle center concentricity equal error problem, greatly
Improve transmission accuracy.
Bikini support, axis system use three fulcrum type bearing support modes, respectively shafting left, center, right three
Position is equipped with the first high speed roller bearing 7, the second high speed roller bearing 17, third high speed roller bearing 25, left and right ends axis
It holds using single pair Back-to-back installation, middle part bearing uses two pairs of series connection Back-to-back installations, further improves main shaft
Rigidity, under working speed, 13 place shaft part radial rigidity of grinding wheel is big, and grinding accuracy is high.
Claims (4)
1. a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in, which is characterized in that the axis system uses
Bearing bearing, is three fulcrum type supporting way, is respectively arranged with high speed roller bearing in the position of shafting left, center, right three respectively,
The outer end of main shaft (1) is set on third high speed roller bearing (25), and grinding wheel spindle is arranged on (17) in the second high speed roller bearing
(11) outer end, the first high speed roller bearing (7) are located at centre, and main shaft (1) and sand are arranged on the first high speed roller bearing (7)
The connecting pin of main shaft (11) is taken turns, grinding wheel (13) is between the first high speed roller bearing (7) and the second high speed roller bearing (17);
The axis system mainly includes main shaft (1), the rotor (2) being integrated with the press-fitting of main shaft (1) periphery, is arranged in motor
Motor stator (3) on the outside of rotor (2) is equipped with motor coolant jacket (4) on the outside of motor stator (3), on the outside of motor coolant jacket (4)
It is arranged main shaft shell (28)；The left side of main shaft (1) is arranged by third high speed roller bearing (25) in left end bearing cage
(26) on, left end bearing cage (26) and the left end of main shaft shell (28) are fixed；Left end bearing axis inner ring locking nut (27)
Third high speed roller bearing (25) is fixed on left end bearing cage (26)；
In the first high speed roller bearing (7), the first high speed roller bearing (7) is arranged in middle part axis for right section of setting of main shaft (1)
It holds in bearing holder (housing, cover) (6), middle part bearing cage (6) is fixed in main shaft shell (28) the right；Main shaft (1) right end is by main shaft grinding wheel
Axis connection hold-down mechanism (24) connects grinding wheel spindle (11), and main shaft grinding wheel axis connection hold-down mechanism (24) is arranged in grinding wheel spindle
Portion, mechanism integrally move downward under bolt effect, squeeze conical surface pawl mouth radial dilatation, force pawl mouth and main shaft (1) interior wall pressure
It is tight locked, to realize grinding wheel spindle (11) and main shaft (1) direct connection.
2. a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in according to claim 1, feature exist
In, periphery setting grinding wheel mounting base (12) of grinding wheel spindle (11) and grinding wheel fastening end plate (14), the right of grinding wheel spindle (11)
It is fixed on the second high speed roller bearing (17), the second high speed roller bearing (17) passes through right end bearing outer ring baffle (16), the
Two bearing outer ring retaining rings (18), second bearing inner ring retaining ring (19), right end bearing bearing inner ring locking nut (20) are fixed on sand
It takes turns in main shaft shell (29).
3. a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in according to claim 1, feature exist
It is directly placed inside driving motor, is fixed as one by press-fitting method with rotor (2), motor turns in the main shaft (1)
Sub (2) directly drive main shaft (1) high speed rotation.
4. a kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in according to claim 1, feature exist
It is directly connected in the main shaft (1) right end internal taper hole and grinding wheel spindle (11) left end male cone (strobilus masculinus).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030085.2A CN109015360B (en) | 2018-09-05 | 2018-09-05 | A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030085.2A CN109015360B (en) | 2018-09-05 | 2018-09-05 | A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109015360A CN109015360A (en) | 2018-12-18 |
| CN109015360B true CN109015360B (en) | 2019-09-10 |
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ID=64623341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811030085.2A Active CN109015360B (en) | 2018-09-05 | 2018-09-05 | A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in |
Country Status (1)
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| CN (1) | CN109015360B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29922642U1 (en) * | 1999-12-24 | 2000-02-24 | Roehm Gmbh | Clamping device for a hollow shaft |
| CN102114613B (en) * | 2010-11-11 | 2012-08-22 | 东南大学 | Efficient inner-cooling electric spindle |
| CN102240969B (en) * | 2011-08-01 | 2012-12-19 | 东南大学 | Electric spindle structure suitable for longhole inner circle processing |
| CN104400017A (en) * | 2014-09-25 | 2015-03-11 | 广州市昊志机电股份有限公司 | Ultrasonic direct connecting main shaft |
| CN205674020U (en) * | 2016-06-03 | 2016-11-09 | 重庆市永川区宋颖科技有限公司 | A kind of crankshaft grinding machine |
| CN205674023U (en) * | 2016-06-12 | 2016-11-09 | 成都茵普精密机械有限公司 | A kind of mechanical main shaft mechanism based on axial workpiece cylindrical grinder |
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2018
- 2018-09-05 CN CN201811030085.2A patent/CN109015360B/en active Active
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| CN109015360A (en) | 2018-12-18 |
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