CN102240969B - Electric spindle structure suitable for longhole inner circle processing - Google Patents
Electric spindle structure suitable for longhole inner circle processing Download PDFInfo
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- CN102240969B CN102240969B CN 201110218032 CN201110218032A CN102240969B CN 102240969 B CN102240969 B CN 102240969B CN 201110218032 CN201110218032 CN 201110218032 CN 201110218032 A CN201110218032 A CN 201110218032A CN 102240969 B CN102240969 B CN 102240969B
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Abstract
The invention relates to an electric spindle structure suitable for longhole inner circle processing. The electric spindle structure comprises a motor shell (13), a motor rotor (9), a motor stator (8), a motor spindle (7), and a motor front bearing (6) and a motor front bearing seat (12) which are used for supporting the motor spindle (7), a motor rear bearing (10) and a motor rear bearing seat (11), a grinding spindle shell (3), a grinding spindle (2), a grinding wheel front bearing (1) and a grinding wheel rear bearing (2) which are used for supporting the grinding spindle (2), and a coupler (5) which is connected with the grinding spindle (2) and the motor spindle (7); and the electric spindle structure is characterized in that: the motor stator (8) is arranged in the motor shell (13); and the motor spindle (7) is arranged at the axial line position in the motor shell (3). The processing accuracy and assembly accuracy of the spindle structure can be guaranteed.
Description
Technical field
The present invention relates to the machining equipment, be a kind of electric main axle structure that is used for circle processing (boring, grinding) in the deep hole.
Background technology
The circle machining of electric main shaft is a kind of cutter to be goed deep into endoporus in the deep hole, to the workpiece internal circular surfaces cut, the electric main axle structure of grinding.Circle machining of electric main shaft in the current deep hole is because cutter need go deep into the processing of workpiece endoporus, and main shaft all adopts the single supporting of cantilevered, and it is longer to overhang, and causes spindle end rigidity low, under the cutting force effect, is prone to produce flexural deformation, influences the cutting quality of main shaft.Owing to receive the restriction in workpiece to be machined aperture, the main shaft diameter is unsuitable excessive, and main shaft needs built-in motor; This causes main axle structure too elongated; Main shaft adds and is difficult to the required precision that reaches enough man-hour, and the spindle mounted process is also very loaded down with trivial details, centre position bearing replacing difficulty; Under the cycling alternating load effect, reduced the service life of main shaft bearing.
Summary of the invention
Technical problem:Technical problem to be solved by this invention is a kind of electric main axle structure that is used for the processing of deep hole internal circular surfaces to be provided, the machining accuracy and the assembly precision of assurance main axle structure; Prolong main shaft bearing service life; The dynamic rate of spindle end cutting point when improving deep hole machining.
Technical scheme:For solving the problems of the technologies described above; The present invention provides a kind of electric main axle structure that is applicable to circle processing in the deep hole; This electricity main axle structure comprises: motor housing, rotor, motor stator, electric machine main shaft and the motor fore bearing and motor front-end bearing pedestal, motor rear bearing and the motor rear bearing block that are used for the supporting motor main shaft, are connected the shaft coupling of grinding wheel spindle and electric machine main shaft at the emery wheel fore bearing of grinding wheel spindle shell, grinding wheel spindle, supporting grinding wheel spindle and emery wheel rear bearing;
Motor stator is housed in the motor housing; On the motor housing inner shaft line position electric machine main shaft is housed; Rotor is equipped with in electric machine main shaft middle part interference; Electric machine main shaft supports through motor fore bearing and the motor rear bearing that is installed in its two ends, and the motor fore bearing is installed in the motor front-end bearing pedestal, and the motor rear bearing is installed in the motor rear bearing block;
The grinding wheel spindle shell is installed on motor front-end bearing pedestal front end; The grinding wheel spindle housing axis is equipped with grinding wheel spindle on the position; Grinding wheel spindle supports through grinding wheel spindle fore bearing and the grinding wheel spindle rear bearing that is installed in its two ends, and grinding wheel spindle fore bearing and grinding wheel spindle rear bearing are installed in the grinding wheel spindle shell;
The front end of shaft coupling is installed on the grinding wheel spindle of grinding wheel spindle rear bearing rear end, on the electric machine main shaft of the motor fore bearing front end that install the rear end of shaft coupling.
Preferably, grinding wheel spindle shell cross section is the off-centre operation annular.
Preferably, motor fore bearing and motor rear bearing are angular contact ball bearing.
Preferably, grinding wheel spindle fore bearing, emery wheel rear bearing are angular contact ball bearing.
Beneficial effect:
Compare with existing structure, adopt the beneficial effect of technical scheme of the present invention to be: the twin spans rotor structure can reduce single shaft length, and main shaft is easy to process, is easy to guarantee to improve machining accuracy; Two sections main shafts adopt shaft coupling to connect, and electric main shaft is convenient to assembling, is easy to guarantee assembly precision; After adopting the twin spans rotor, the alternate stress that bears during main shaft work reduces, and can reduce the wearing and tearing of intermediate bearing, improves the service life of main shaft, and part exchangings such as bearing are also comparatively convenient.After the housing cantilever adopts on-circular cross-section to strengthen, improve the bending strength of housing cantilever, improve the spindle end dynamic rate, thereby improve cutting quality.
Description of drawings
Fig. 1 is a structure cutaway view of the present invention;
Fig. 2 is the cross section of Fig. 1 medium plain emery wheel shaft housing 3.
Have among the figure: emery wheel fore bearing 1, emery wheel rear bearing 4, motor fore bearing 6, motor rear bearing 10, grinding wheel spindle 2, electric machine main shaft 7, grinding wheel spindle shell 3; Motor housing 13, shaft coupling 5, motor stator 8, rotor 9; Motor front-end bearing pedestal 12, motor rear bearing block 11.
The specific embodiment
Referring to Fig. 1, Fig. 2; A kind of electric main axle structure that is applicable to circle processing in the deep hole that the present invention relates to; The motor fore bearing 6 and motor front-end bearing pedestal 12, motor rear bearing 10 and the motor rear bearing block 11 that comprise motor housing 13, rotor 9, motor stator 8, electric machine main shaft 7 and be used for supporting motor main shaft 7, are connected the shaft coupling 5 of grinding wheel spindle 2 and electric machine main shaft 7 at the emery wheel fore bearing 1 of grinding wheel spindle shell 3, grinding wheel spindle 2, supporting grinding wheel spindle 2 and emery wheel rear bearing 4.
Grinding wheel spindle shell 3 is installed on motor front-end bearing pedestal 12 front ends; On grinding wheel spindle shell 3 axial location grinding wheel spindle 2 is housed; Grinding wheel spindle 2 supports with grinding wheel spindle rear bearing 4 through the grinding wheel spindle fore bearing 1 that is installed in its two ends, and grinding wheel spindle fore bearing 1 is installed in the grinding wheel spindle shell 3 with grinding wheel spindle rear bearing 4.
The front end of shaft coupling 5 is installed on the grinding wheel spindle 2 of grinding wheel spindle rear bearing 4 rear ends, on the electric machine main shaft 7 of motor fore bearing 6 front ends that install the rear end of shaft coupling 5.
Grinding wheel spindle shell 3 cross sections are the off-centre operation annular.
Motor fore bearing 6 is angular contact ball bearing with motor rear bearing 10.
Grinding wheel spindle fore bearing 1, emery wheel rear bearing 4 are angular contact ball bearing.
After main shaft adopts the twin spans rotor, shorten the length of single axle, improved machining accuracy.System can be divided into two parts with shell-axis system during assembling from the shaft coupling position, independent installation couples together two parts through shaft coupling at last respectively, and is easy to assembly, is prone to reach high assembly precision.After the grinding wheel spindle shell adopted on-circular cross-section to strengthen, shell cutting point one side main shaft size did not change, and does not influence the processing of workpiece internal circular surfaces, but bending strength significantly improves, thereby improved the spindle nose dynamic rate, improved the cutting ability of main shaft.
The above is merely preferred embodiments of the present invention; Protection scope of the present invention is not exceeded with above-mentioned embodiment; As long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. one kind is applicable to the round electric main axle structure of processing in the deep hole; This electricity main axle structure comprises: motor housing (13), rotor (9), motor stator (8), electric machine main shaft (7) and the motor fore bearing (6) and motor front-end bearing pedestal (12), motor rear bearing (10) and the motor rear bearing block (11) that are used for supporting motor main shaft (7), are connected the shaft coupling (5) of grinding wheel spindle (2) and electric machine main shaft (7) at the emery wheel fore bearing (1) of grinding wheel spindle shell (3), grinding wheel spindle (2), supporting grinding wheel spindle (2) and emery wheel rear bearing (4); It is characterized in that:
Motor stator (8) is housed in the motor housing (13); On motor housing (13) the inner shaft line position electric machine main shaft (7) is housed; Rotor (9) is equipped with in electric machine main shaft (7) middle part interference; Electric machine main shaft (7) supports through motor fore bearing (6) and the motor rear bearing (10) that is installed in its two ends, and motor fore bearing (6) is installed in the motor front-end bearing pedestal (12), and motor rear bearing (10) is installed in the motor rear bearing block (11);
Grinding wheel spindle shell (3) is installed on motor front-end bearing pedestal (12) front end; On grinding wheel spindle shell (3) axial location grinding wheel spindle (2) is housed; Grinding wheel spindle (2) supports through grinding wheel spindle fore bearing (1) and the grinding wheel spindle rear bearing (4) that is installed in its two ends, and grinding wheel spindle fore bearing (1) and grinding wheel spindle rear bearing (4) are installed in the grinding wheel spindle shell (3);
The front end of shaft coupling (5) is installed on the grinding wheel spindle (2) of grinding wheel spindle rear bearing (4) rear end, on the electric machine main shaft (7) of motor fore bearing (6) front end that install the rear end of shaft coupling (5).
2. the described electric main axle structure that is applicable to circle processing in the deep hole of claim 1 is characterized in that, grinding wheel spindle shell (3) cross section is the off-centre operation annular.
3. the described electric main axle structure that is applicable to circle processing in the deep hole of claim 1 is characterized in that motor fore bearing (6) and motor rear bearing (10) are angular contact ball bearing.
4. the described electric main axle structure that is applicable to circle processing in the deep hole of claim 1 is characterized in that grinding wheel spindle fore bearing (1), emery wheel rear bearing (4) are angular contact ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110218032 CN102240969B (en) | 2011-08-01 | 2011-08-01 | Electric spindle structure suitable for longhole inner circle processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110218032 CN102240969B (en) | 2011-08-01 | 2011-08-01 | Electric spindle structure suitable for longhole inner circle processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102240969A CN102240969A (en) | 2011-11-16 |
| CN102240969B true CN102240969B (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110218032 Expired - Fee Related CN102240969B (en) | 2011-08-01 | 2011-08-01 | Electric spindle structure suitable for longhole inner circle processing |
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| CN (1) | CN102240969B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441845A (en) * | 2011-12-05 | 2012-05-09 | 无锡机床股份有限公司 | High-precision deep hole grinding electric spindle structure |
| CN104493209B (en) * | 2014-12-25 | 2017-01-25 | 江南大学 | Gas-liquid hybrid-support high-speed motorized spindle device with large thrust plate |
| CN109015360B (en) * | 2018-09-05 | 2019-09-10 | 东南大学 | A kind of high speed direct connection accurate grinding grinding wheel spindle system of electric machine built-in |
| CN112872843A (en) * | 2021-01-22 | 2021-06-01 | 湖北航鹏化学动力科技有限责任公司 | Method for realizing high-speed cutting on common lathe and multifunctional machine head |
| CN117161860B (en) * | 2023-11-02 | 2024-04-05 | 南通海狮船舶机械有限公司 | Pipeline washs pump station part grinding device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073871A (en) * | 2006-05-19 | 2007-11-21 | 上海飞华汽车部件有限公司 | Method for machining flange-axis external cylindrical gear of automobile |
| EP1906040A1 (en) * | 2006-09-29 | 2008-04-02 | Jtekt Corporation | Cross groove type constant velocity joint |
| CN202185591U (en) * | 2011-08-01 | 2012-04-11 | 东南大学 | Electric main shaft structure applicable to machining inner circle of deep hole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8062094B2 (en) * | 2005-06-29 | 2011-11-22 | Deere & Company | Process of durability improvement of gear tooth flank surface |
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2011
- 2011-08-01 CN CN 201110218032 patent/CN102240969B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073871A (en) * | 2006-05-19 | 2007-11-21 | 上海飞华汽车部件有限公司 | Method for machining flange-axis external cylindrical gear of automobile |
| EP1906040A1 (en) * | 2006-09-29 | 2008-04-02 | Jtekt Corporation | Cross groove type constant velocity joint |
| CN202185591U (en) * | 2011-08-01 | 2012-04-11 | 东南大学 | Electric main shaft structure applicable to machining inner circle of deep hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102240969A (en) | 2011-11-16 |
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