CN210164871U - Transmission device with pretightening force and planetary roller screw rod as electric cylinder - Google Patents
Transmission device with pretightening force and planetary roller screw rod as electric cylinder Download PDFInfo
- Publication number
- CN210164871U CN210164871U CN201920629803.1U CN201920629803U CN210164871U CN 210164871 U CN210164871 U CN 210164871U CN 201920629803 U CN201920629803 U CN 201920629803U CN 210164871 U CN210164871 U CN 210164871U
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- China
- Prior art keywords
- planetary roller
- screw rod
- roller screw
- bearing
- transmission shaft
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of electric cylinders, and discloses a planetary roller screw rod with pretightening force as a transmission device of an electric cylinder; is provided with a base; the right end of the base is clamped with a bearing, a transmission shaft is sleeved in the bearing, the left end of the transmission shaft is provided with a spiral thread, and the transmission shaft is connected with a planetary roller screw rod through the spiral thread; the planetary roller screw rod is internally embedded with a screw rod through a bearing, an oil cavity is arranged at the right end of the planetary roller screw rod, and the oil cavity is in clearance connection with the screw rod through an oil outlet. The utility model discloses a be provided with planet roller screw to inside inlays through the bearing and is equipped with the hob, can provide the rated dynamic load and the static load that are higher than ball, and the screw thread roller replaces the ball and will make the load evenly release through numerous contact wires, thereby can have higher shock resistance. Meanwhile, the bearing device can bear higher rotating speed and higher acceleration, so that the whole bearing device has higher rigidity and impact resistance.
Description
Technical Field
The utility model belongs to the technical field of electronic jar, especially, relate to a take planet roller lead screw of pretightning force as the transmission of electronic jar.
Background
At present, with the higher and higher requirements of factory automation, the electric cylinder is produced at the same time. Most of the electric cylinder servo motors used in the present factories are driven by mechanical transmission means such as: the gear, the synchronous belt, the connecting bearing and the like drive the ball screw to rotate, balls are distributed between the screw and the sliding block in a arraying manner, and roll along a screw thread groove and drive the sliding block to complete linear motion, so that the push-pull action of the push rod is realized. In order to meet different requirements, the electric cylinder needs not to be improved. Not only the existing planetary roller screw rod with pretightening force as the transmission device of the electric cylinder can not bear larger rated dynamic load and static load. And the existing planet roller screw rod with pretightening force as the transmission device of the electric cylinder can not continuously add lubricating oil, and simultaneously, the added lubricating oil can not fully lubricate the roller screw rod, thereby wasting a large amount of lubricating oil.
In summary, the problems of the prior art are as follows:
(1) the existing planetary roller screw rod with pretightening force as a transmission device of an electric cylinder cannot bear larger rated dynamic load and static load.
(2) The existing planetary roller screw with pretightening force as a transmission device of an electric cylinder can not continuously add lubricating oil, and simultaneously, the added lubricating oil can not fully lubricate the roller screw, so that a large amount of lubricating oil is wasted.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a take planet roller lead screw of pretightning force as the transmission of electronic jar.
The utility model discloses a realize like this, a take planet roller lead screw of pretightning force is provided with as the transmission of electronic jar:
a base;
the right end of the base is clamped with a bearing, a transmission shaft is sleeved in the bearing, the left end of the transmission shaft is provided with a spiral thread, and the transmission shaft is connected with a planetary roller screw rod through the spiral thread;
the planetary roller screw rod is internally embedded with a screw rod through a bearing, an oil cavity is arranged at the right end of the planetary roller screw rod, and the oil cavity is in clearance connection with the screw rod through an oil outlet.
The utility model discloses a be provided with planet roller screw to inside inlays through the bearing and is equipped with the hob, can provide the rated dynamic load and the static load that are higher than ball, and the screw thread roller replaces the ball and will make the load evenly release through numerous contact wires, thereby can have higher shock resistance. Meanwhile, the bearing device can bear higher rotating speed and higher acceleration, so that the whole bearing device has higher rigidity and impact resistance; be provided with the oil pocket through being provided with planet roller lead screw right-hand member, lubricating oil can drip the hob clearance through the oil outlet, transmits the front end with oil by the motion of hob, practices thrift lubricating oil.
Further, a motor cover is fixed at the upper end of the base through a bolt, and a motor is fixed inside the motor cover through a bolt;
the motor output shaft end is connected with a gear in a clamping mode, the right end of the transmission shaft is connected with the gear in a clamping mode, and the motor output shaft gear is in line contact with the transmission shaft gear.
The motor cover is fixed on the upper end of the base, so that the occupied space can be reduced; the motor is arranged inside the device and is used for providing motive power of the device.
Furthermore, the planetary roller screw is welded with the thrust rod, and the left end of the thrust rod is sleeved with a front end connector.
The utility model discloses a be provided with the front end connector, when can avoiding rotating, the terminal surface takes place the contact with the assembly position.
Furthermore, the thrust rod is welded with a driving rod, the driving rod is connected with a transmission disc through spiral threads, and the transmission disc is connected with the fixed support through a rotating shaft.
The utility model discloses a be provided with the actuating lever and be connected with the transmission disc, turn into the rotary motion of transmission disc with the axis motion.
Drawings
Fig. 1 is a schematic structural view of a transmission device with a planetary roller screw rod with a pretightening force as an electric cylinder provided by the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a transmission shaft and a circular housing provided by an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a planetary roller screw housing according to an embodiment of the present invention.
In the figure: 1. a base; 2. a bearing; 3. a motor cover; 4. a drive shaft; 5. a planetary roller screw; 6. a thrust rod; 7. a front end fitting; 8. a drive rod; 9. a transmission disc; 10. a fixed support; 11. a circular housing; 12. an oil chamber; 13. a screw rod; 14. an oil outlet.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-3, the planetary roller screw with pretightening force is provided with a base 1 as a transmission device of an electric cylinder; the upper end of the base 1 is fixed with a motor cover 3 through bolts, a motor is fixed inside the motor cover 3 through bolts, a gear is connected to the end of a motor output shaft in a clamped mode, a gear is connected to the right end of the transmission shaft 4 in a clamped mode, and the gear of the motor output shaft is in line contact with the gear of the transmission shaft 4.
The right end of the base 1 is clamped with a bearing 2, a transmission shaft 4 is sleeved in the bearing 2, spiral threads are formed in the left end of the transmission shaft 4, the transmission shaft 4 is connected with a planetary roller screw 5 through the spiral threads, a spiral rod 13 is embedded in the planetary roller screw 5 through the bearing, an oil cavity 12 is formed in the right end of the planetary roller screw 5, and the oil cavity 12 is in clearance connection with the spiral rod 13 through an oil outlet 14;
the planetary roller screw 5 is welded with the thrust rod 6, and the left end of the thrust rod 6 is sleeved with a front end connector 7; the thrust rod 6 is welded with a driving rod 8, and the driving rod 8 is connected with a transmission disc 9 through a spiral thread; the transmission disc 9 is connected with the fixed support 10 through a rotating shaft.
The utility model discloses a theory of operation:
an electric cylinder servo motor drives a transmission shaft 4 to rotate through gear engagement, and the transmission shaft 4 is connected with a planetary roller screw 5 through spiral threads to convert the rotation motion into axial motion; the planetary roller screw 5 drives the thrust rod 6 to rotate and move leftwards, and the driving rod 8 drives the transmission disc 9 to rotate.
The utility model discloses a be provided with planet roller 5 to inside inlays through the bearing and is equipped with hob 13, can provide the rated dynamic load and the static load that are higher than ball, and the screw thread roller replaces the ball and will make the load evenly release through numerous contact lines, thereby can have higher shock resistance. Meanwhile, the bearing device can bear higher rotating speed and higher acceleration, so that the whole bearing device has higher rigidity and impact resistance; through being provided with planet roller lead screw 5 right-hand member and being provided with oil pocket 12, lubricating oil can drip 13 clearances of hob through the oil outlet, transmits oil to the front end by the motion of hob 13, practices thrift lubricating oil.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a take planet roller lead screw of pretightning force as transmission of electronic jar which characterized in that, the planet roller lead screw of taking the pretightning force be provided with as transmission of electronic jar:
a base;
the right end of the base is clamped with a bearing, a transmission shaft is sleeved in the bearing, the left end of the transmission shaft is provided with a spiral thread, and the transmission shaft is connected with a planetary roller screw rod through the spiral thread;
the planetary roller screw rod is internally embedded with a screw rod through a bearing, an oil cavity is arranged at the right end of the planetary roller screw rod, and the oil cavity is in clearance connection with the screw rod through an oil outlet.
2. The transmission device with the pretightening force of the planetary roller screw as the electric cylinder as claimed in claim 1, wherein a motor cover is fixed at the upper end of the base through a bolt, and a motor is fixed inside the motor cover through a bolt;
the motor output shaft end is connected with a gear in a clamping mode, the right end of the transmission shaft is connected with the gear in a clamping mode, and the motor output shaft gear is in line contact with the transmission shaft gear.
3. The pre-tensioned planetary roller screw as claimed in claim 1, wherein the planetary roller screw is welded to a thrust rod, and a front end connector is sleeved on the left end of the thrust rod.
4. The pre-tensioned planetary roller screw as claimed in claim 3, wherein the thrust rod is welded with a drive rod, the drive rod is connected with a drive disk by a helical thread, and the drive disk is connected with the fixed support by a rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920629803.1U CN210164871U (en) | 2019-05-06 | 2019-05-06 | Transmission device with pretightening force and planetary roller screw rod as electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920629803.1U CN210164871U (en) | 2019-05-06 | 2019-05-06 | Transmission device with pretightening force and planetary roller screw rod as electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164871U true CN210164871U (en) | 2020-03-20 |
Family
ID=69790618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920629803.1U Expired - Fee Related CN210164871U (en) | 2019-05-06 | 2019-05-06 | Transmission device with pretightening force and planetary roller screw rod as electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164871U (en) |
-
2019
- 2019-05-06 CN CN201920629803.1U patent/CN210164871U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200320 Termination date: 20210506 |