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Planet roller screw electric cylinder

A technology of planetary rollers and electric cylinders, applied in transmissions, belts/chains/gears, mechanical equipment, etc., can solve problems such as low precision and low power of electric cylinders, to eliminate influence, ensure transmission accuracy, and facilitate modules The effect of the design

Pending Publication Date: 2019-04-23
SEENPIN PROD ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a planetary roller screw electric cylinder to overcome the defects of low power and low precision of the electric cylinder in the prior art

Method used

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  • Planet roller screw electric cylinder
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Embodiment 1

[0056] Such as Figure 1-Figure 4As shown, this embodiment discloses a planetary roller screw electric cylinder. The planetary roller screw electric cylinder includes a motor 22 , a cylinder body 17 , a power tube 13 and a planetary roller screw auxiliary transmission mechanism.

[0057] The motor 22 outputs power to the lead screw, and the power tube 13 is fixedly connected to the nut 5 through a set screw 18 . The planetary roller screw pair transmission mechanism is arranged in the cylinder body 17 , and the power tube 13 protrudes from the cylinder body 17 .

[0058] Such as Figure 1-Figure 3 As shown, the planetary roller screw auxiliary transmission mechanism includes a nut 5 , a lead screw 1 and a planetary roller 4 .

[0059] Such as figure 1 As shown, the nut 5 is sleeved with the outer side of the lead screw 1 at intervals. The planetary rollers 4 are distributed between the nut 5 and the screw 1 along the circumferential direction of the screw 1 .

[0060] The...

Embodiment 2

[0102] The structures and principles of this embodiment are the same as those of Embodiment 1 except for the connection mode of the motor, so details will not be repeated here.

[0103] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment is a linear planetary roller screw electric cylinder structure. In this embodiment, the lead screw 1 and the motor 22 are connected through a coupling 25, and the linear electric cylinder has a compact structure.

[0104] In practical application, the linear electric cylinder of this embodiment and the reflex electric cylinder of Embodiment 1 can be selected according to different installation environments.

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Abstract

The invention discloses a planet roller screw electric cylinder. The planet roller screw electric cylinder comprises a motor, a cylinder body, a power pipe and a planet roller screw pair transmissionmechanism. The motor outputs power to a lead screw. The power pipe is fixedly connected with a nut. The planet roller screw pair transmission mechanism is arranged inside the cylinder body. The powerpipe extends out of the cylinder body. The planet roller screw electric cylinder has the active and progressive effects that a novel planet roller screw pair structure is adopted, the planet roller screw electric cylinder does not slip under the heavy-load condition, the transmission precision is guarantee, and the engineering actual requirements of high precision, high-speed heavy-load and long service life can be met; the motor is can be arranged into a returning type and also can be arranged into a linear type; moving parts are arranged inside the cylinder body, seal parts are arranged inside a left end cover and a right end cover of the two ends of the cylinder body, the moving parts are isolated from the external environment, and the influence of the external environment on the key moving parts is completely eradicated; and the planet roller screw pair structure can be dismounted and replaced as needed, and modularized design can be achieved easily.

Description

technical field [0001] The invention relates to a planetary roller screw electric cylinder. Background technique [0002] The servo electric cylinder converts the rotary motion of the servo motor into the linear motion of the actuator, and at the same time accurately controls the speed and position, and has a wide range of applications in engineering applications. Servo electric cylinders are generally composed of servo motors, synchronous conveyor belts, lead screws, cylinders, etc., and can be divided into linear and return electric cylinders. In linear electric cylinders, the servo motor is directly connected to the lead screw, and the input and output are in one line. In the switchback type electric cylinder, the servo motor is connected to the lead screw through a synchronous conveyor belt, and the overall length is short, which is suitable for occasions where the installation location is small. [0003] Among the existing electric cylinders, in addition to the modular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20F16H25/22
CPCF16H25/20F16H25/2252F16H2025/2081F16H2025/2087
Inventor 单新平严作海郑正鼎陈兵奎
Owner SEENPIN PROD ZHEJIANG
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