CN202053113U - Direct-drive workpiece head - Google Patents
Direct-drive workpiece head Download PDFInfo
- Publication number
- CN202053113U CN202053113U CN2011200644725U CN201120064472U CN202053113U CN 202053113 U CN202053113 U CN 202053113U CN 2011200644725 U CN2011200644725 U CN 2011200644725U CN 201120064472 U CN201120064472 U CN 201120064472U CN 202053113 U CN202053113 U CN 202053113U
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- CN
- China
- Prior art keywords
- mandrel
- workpiece head
- stator
- bearing
- workpiece
- 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.)
- Expired - Fee Related
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The utility model discloses a direct-drive workpiece head which comprises a mandrel (1), a stator (2), a bearing (5) and an outer cover (6), wherein the mandrel (1) is arranged on a center shaft of the workpiece head as a rotating part used for connecting an external tooling fixture; the stator (2) is arranged at the periphery of the mandrel (1), consists of a magnet exciting coil and a cooling inner shell and is used for driving the mandrel (1) to rotate and radiate heat; the bearing (5) is used for supporting the rotation of the mandrel (1); and the mandrel (1), the stator (2) and the bearing (5) are contained in the outer cover (6). In the utility model, the length of a main transmission chain of a machine tool is shortened to zero to realize the zero transmission, so that the error and the temperature difference deformation caused by middle mechanical transmission of a spindle of the workpiece are reduced, and the rotary positioning accuracy is high; and the direct-drive workpiece head can be used as a second spindle to be used for a grinding wheel finishing shaft in the industry of tool grinding machines.
Description
Technical field
The utility model belongs to the motor-driven field, is specifically related to a kind of workpiece head that directly drives.
Background technology
The tradition workhead is that servomotor passes through worm and gear, drives the work spindle revolution, the speed of work spindle of this workhead low (about 60rpm), and it is low that workpiece is carried out grinding surface roughness of cylinder, and the revolution positioning accuracy is not high.And used drive apparatus, and improved rate of breakdown, in the high-speed grinding that develops rapidly, be difficult to obtain simultaneously higher precision and efficient.
Summary of the invention
The purpose of this utility model is to propose a kind of workpiece head that directly drives, adopt built-in motor directly to drive, is the contraction in length of Machine Tool Main Drive chain zero, realized " zero transmission " of lathe, therefore reduced the sum of errors temperature deformation that work spindle is produced because of the intermediate mechanical transmission, revolution positioning accuracy height; Simultaneously can make second main shaft, be used for the crushing axle of cutter and tool grinding machine industry.
For realizing that the concrete technical scheme that the purpose of this utility model adopted is:
A kind of workpiece head that directly drives comprises mandrel, stator, and bearing and outer cover, described mandrel are positioned on the axis of workpiece head, as rotary part, and are used to connect outside frock clamp; Described stator is arranged on the mandrel periphery, and it is made up of magnet exciting coil and cooling inner casing, is used to drive mandrel rotation and heat radiation; Described bearing is used for the rotation of support mandrel; Described mandrel, stator and bearing are placed in the described outer cover in the lump.
This workpiece head also comprises the grating chi, is used for the accurate location of mandrel rotation.
This workpiece head also comprises temperature sensor, is used for the internal temperature of monitoring workpiece head.
This directly drives zero transmission of workpiece head and directly drives work spindle, and the revolution positioning accuracy reaches 0.002 ° of repetitive positioning accuracy and reaches 0.004 °, and main shaft circular runout and axial float are less than 0.003mm.Workpiece calibration and crushing axle unite two into one.
Description of drawings
Fig. 1 directly drives workpiece head general assembly structural representation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The workpiece head that directly drives of the present utility model comprises mandrel 1, stator 2, grating chi 3, bearing 5 and outer cover 6.
This device motor and main shaft merge, and the rotor of motor is the rotating part of main shaft, and its mandrel 1 is used for fixing rotor magnetic pole and serves as rotary part, and play the effect that connects outside frock clamp.Stator 2 is made up of magnet exciting coil and cooling inner casing, is used to drive rotary part and heat radiation.Grating chi 3 is used for the accurate location of rotary part.Circulation forced the cold torque motor mode of directly driving to connect with work spindle in workhead adopted, and can reduce the sum of errors temperature deformation of intermediate mechanical transmission, and temperature sensor 4 also is installed simultaneously, was used for monitoring workpiece headstock internal temperature situation.Dynamic balancing when bearing 5 is used to support rotary part and keeps high speed to rotate.
High-precision disk light beam encoder is housed on the work spindle of the present utility model, forms the control of full cut-off ring high accuracy.The workpiece head is inner to prevent that with the gas barrier protective device cooling fluid, abrasive dust from entering main shaft bearing.
Outer cover 6 is used for fixing parts such as stator and bearing, and serves as cooled enclosure guarantee that cooling fluid circulates, and guarantees the heat radiation of whole electric main shaft between outer cover and stator 2.
Claims (3)
1. one kind is directly driven the workpiece head, comprises mandrel (1), stator (2), and bearing (5) and outer cover (6), described mandrel (1) is positioned on the axis of workpiece head, as rotary part, and is used to connect outside frock clamp; Described stator (2) is arranged on mandrel (1) periphery, and it is made up of magnet exciting coil and cooling inner casing, is used to drive mandrel (1) rotation and heat radiation; Described bearing (5) is used for the rotation of support mandrel (1); Described mandrel (1), stator (2) and bearing (5) are placed in the described outer cover (6) in the lump.
2. the workpiece head that directly drives according to claim 1 is characterized in that this workpiece head also comprises grating chi (3), is used for the accurate location of mandrel (1) rotation.
3. the workpiece head that directly drives according to claim 1 and 2 is characterized in that this workpiece head also comprises temperature sensor (4), is used for the internal temperature of monitoring workpiece head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200644725U CN202053113U (en) | 2011-03-14 | 2011-03-14 | Direct-drive workpiece head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200644725U CN202053113U (en) | 2011-03-14 | 2011-03-14 | Direct-drive workpiece head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202053113U true CN202053113U (en) | 2011-11-30 |
Family
ID=45013100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200644725U Expired - Fee Related CN202053113U (en) | 2011-03-14 | 2011-03-14 | Direct-drive workpiece head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202053113U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518615A (en) * | 2013-10-04 | 2015-04-15 | 发那科株式会社 | Cooling pipe joint for motor cooling and motor cooling device provided with cooling pipe joint |
| CN117359131A (en) * | 2023-11-21 | 2024-01-09 | 北京瑞邦精控科技有限公司 | Direct-drive high-precision horizontal turntable |
-
2011
- 2011-03-14 CN CN2011200644725U patent/CN202053113U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518615A (en) * | 2013-10-04 | 2015-04-15 | 发那科株式会社 | Cooling pipe joint for motor cooling and motor cooling device provided with cooling pipe joint |
| CN104518615B (en) * | 2013-10-04 | 2017-10-10 | 发那科株式会社 | Motor cooling is with cooling pipe joint and with the motor cooling device for cooling down pipe joint |
| CN117359131A (en) * | 2023-11-21 | 2024-01-09 | 北京瑞邦精控科技有限公司 | Direct-drive high-precision horizontal turntable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20130314 |