Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Planetary roller lead-screw pair

A technology of planetary rollers and lead screw pairs, which is applied in the direction of belts/chains/gears, mechanical equipment, transmission devices, etc., can solve problems such as the inability to limit the inclination of rollers with high precision, achieve simple structure, strong load-bearing capacity, and improve load-carrying effect of ability

Inactive Publication Date: 2020-11-06
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a planetary roller screw pair, which has the characteristics of simple structure, high precision, strong bearing capacity, and stable movement, and solves the problem that the split cage cannot achieve high precision. Limit the problem of roller tilting, while improving the bearing capacity of the screw pair

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Planetary roller lead-screw pair
  • Planetary roller lead-screw pair
  • Planetary roller lead-screw pair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further elaborated below in conjunction with embodiment.

[0023] The invention proposes an integral cage planetary roller screw pair, which has the characteristics of simple structure, high precision, strong bearing capacity, and stable movement, and solves the problem that the split cage cannot limit the inclination of the rollers with high precision. problem, making the transmission of the screw pair more stable; at the same time, the axial limit structure of the original cage is omitted, which makes the thread load length longer under the same conditions and improves the bearing capacity of the screw pair.

[0024] In order to prevent the rollers of the planetary roller screw from inclining relative to the screw and improve the stability of the planetary motion of the rollers, a novel planetary cage structure of the planetary roller screw is designed in the present invention. It can improve the stability, precision and bearing capacity ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a planetary roller lead-screw pair, and belongs to the field of design of planetary roller lead-screw pairs. The planetary roller lead-screw pair comprises a nut, a right gearring, a holder, a lead screw, a left gear ring, n rollers and two locking bolts, wherein the lead screw is axially and horizontally arranged; the outer wall of the lead screw is sleeved with the holder; the n rollers are uniformly embedded into the holder in the circumferential direction, the n rollers are parallel to the axis of the lead screw, and the n rollers are in threaded fit with the leadscrew; the outer wall of the holder is sleeved with the nut; the left gear ring and the right gear ring are arranged on the inner wall of the nut, and the outer walls of the n rollers are sleeved with the left and right gear rings; the left gear ring is correspondingly arranged at the left ends of the rollers in the axial direction, the right gear ring is correspondingly arranged at the right ends of the rollers in the axial direction, and the left gear ring and the right gear ring are fixedly connected with the nut through the two locking bolts respectively; and n is a positive integer. Theplanetary roller lead-screw pair has the characteristics that the structure is simple, the precision is high, the bearing capacity is high, and the movement is stable. The problem that a split type holder cannot limit tilting of the rollers at a high precision is solved, and moreover, the bearing capacity of the lead-screw pair is improved.

Description

technical field [0001] The invention belongs to the design field of a planetary roller screw pair, and relates to a planetary roller screw pair. Background technique [0002] The commonly used types of planetary roller screw pairs are RV, RVI, differential, etc. There are many types, but the cage generally adopts a split floating structure at both ends. The cages are independent of each other (there is no circumferential constraint on each other), and there is inevitable mutual torsional displacement. Under the load-bearing thread force, the rollers are offset relative to the screw axis, which makes the bearing performance of the roller screw pair worse and reduces Transmission accuracy and smoothness. Contents of the invention [0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a planetary roller screw pair, which has the characteristics of simple structure, high precision, strong bearing capacity, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22
CPCF16H25/2252F16H2025/2271
Inventor 侍威郑继贵张兆晶黄玉平徐强宋洪舟
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products