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CN-224223927-U - Compact roller screw rod of multi-degree-of-freedom robot joint

CN224223927UCN 224223927 UCN224223927 UCN 224223927UCN-224223927-U

Abstract

The utility model relates to the technical field of roller screw rods, in particular to a compact roller screw rod of a multi-degree-of-freedom robot joint, which comprises a driving screw rod and a transmission seat in threaded connection with the outer side of the driving screw rod, wherein one side of the transmission seat is provided with a lubricating oil filling hole communicated with the inner side of the transmission seat, and one side of the lubricating oil filling hole is provided with a filling pipe fixedly connected with the outer side of the transmission seat.

Inventors

  • XU YANG
  • LIANG YONGHUA
  • ZHANG JINGJING
  • HUANG XINHUA
  • XU GENLIN

Assignees

  • 深圳市诺仕机器人有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (7)

  1. 1. The compact roller screw rod of the multi-degree-of-freedom robot joint comprises a driving screw rod (1) and a transmission seat (2) which is in threaded connection with the outer side of the driving screw rod (1), and is characterized in that a lubricating oil filling hole (3) which is communicated with the inner side of the transmission seat (2) is formed in one side of the transmission seat (2), a filling pipe (4) which is fixedly connected with the outer side of the transmission seat (2) is arranged on one side of the lubricating oil filling hole (3), a thread groove (5) is formed in the top of the inner side of the filling pipe (4), a thread block (6) is in threaded connection with the inner side of the thread groove (5), an air inlet component (7) is internally mounted in the thread block (6), a piston (8) is mounted at the bottom end of the air inlet component (7), a compression spring (9) is fixedly connected to the top end of the piston (8), and a limiter (10) is mounted on the outer side of the air inlet component (7).
  2. 2. The compact roller screw rod of the multi-degree-of-freedom robot joint of claim 1, wherein the piston (8) is arranged on the inner side of the filling pipe (4) and is tightly attached to the inner side of the filling pipe (4), and the top end of the compression spring (9) is fixedly connected with the bottom end of the threaded block (6).
  3. 3. The compact roller screw rod of the multi-degree-of-freedom robot joint of claim 1, wherein the air inlet assembly (7) comprises an air pipe (71) vertically arranged inside the threaded block (6) and penetrating through the threaded block (6), an air hole (72) penetrating through the air pipe (71) is formed in the outer side of the bottom of the air pipe (71), a mounting frame (73) penetrating through the air pipe (71) is fixedly connected to the top end of the air pipe (71), and a filter block (74) is arranged on the inner side of the mounting frame (73).
  4. 4. The compact roller screw of the multi-degree-of-freedom robot joint of claim 3 wherein the connection between the air pipe (71) and the threaded block (6) is a sliding connection, and the connection between the filter block (74) and the mounting frame (73) is a clamping connection.
  5. 5. The compact roller screw of the multi-degree of freedom robot joint of claim 4 wherein the plurality of air holes (72) are provided, and the air holes (72) are distributed in polar axis outside the air pipe (71).
  6. 6. The compact roller screw of the multi-degree-of-freedom robot joint of claim 5, wherein the limiter (10) comprises half-open tubes (101) symmetrically arranged on the outer sides of the air tubes (71), the half-open tubes (101) are hinged through spring hinges (102), and handles (103) are fixedly connected to the outer sides of the half-open tubes (101).
  7. 7. The compact roller screw of the multi-degree-of-freedom robot joint of claim 6, wherein the inner side of the half-open tube (101) is tightly attached to the outer side of the air pipe (71), the top end of the half-open tube (101) is tightly attached to the bottom end of the mounting frame (73), and the bottom end of the half-open tube (101) is tightly attached to the top end of the threaded block (6).

Description

Compact roller screw rod of multi-degree-of-freedom robot joint Technical Field The utility model relates to the technical field of roller screw rods, in particular to a compact roller screw rod of a multi-degree-of-freedom robot joint. Background The compact roller screw rod of the multi-degree-of-freedom robot joint is usually referred to as a planetary roller screw rod, is a high-end precise transmission part, plays a key role in the field of robots, has a plurality of advantages, is particularly suitable for occasions requiring precise control and high thrust output, has obvious advantages in miniaturization, and has a structural design so that the high thrust output can be realized in a smaller volume, which is particularly important for the multi-degree-of-freedom robot joint with limited space, and is beneficial to a robot designer to integrate more functions in a limited space and improve the overall performance of the robot. The prior compact roller screw rod has wide application, but when the prior device uses lubricating oil for lubrication, the lubricating oil can only be smeared on the outer side of the screw rod for lubrication, and the rollers in the transmission seat can not be smeared on the lubricating oil and can not be fully lubricated, so the prior device provides the compact roller screw rod of the multi-degree-of-freedom robot joint. Disclosure of utility model The utility model aims to provide a compact roller screw of a multi-degree-of-freedom robot joint, which solves the problem that rollers in an existing transmission seat proposed in the background art cannot be sufficiently lubricated. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a compact roller lead screw of multi freedom robot joint, includes drive lead screw and threaded connection in the drive seat in the drive lead screw outside, lubricating oil filling hole that link up with the drive seat is seted up to drive seat one side, lubricating oil filling hole one side is equipped with the filling pipe of fixed connection in the drive seat outside, the screw thread groove has been seted up at the inboard top of filling pipe, screw thread groove inboard threaded connection has the screw thread piece, screw thread piece internally mounted has the subassembly that admits air, the piston is installed to the subassembly bottom that admits air, piston top fixedly connected with hold-down spring, the stopper is installed in the subassembly outside of admitting air. Preferably, the piston is arranged on the inner side of the filling pipe and is tightly attached to the inner side of the filling pipe, and the top end of the compression spring is fixedly connected with the bottom end of the thread block. Preferably, the air inlet assembly comprises an air pipe vertically arranged inside the threaded block and penetrating through the threaded block, an air hole penetrating through the air pipe is formed in the outer side of the bottom of the air pipe, a mounting frame penetrating through the air pipe is fixedly connected to the top end of the air pipe, and a filter block is arranged on the inner side of the mounting frame. Preferably, the connection mode between the air pipe and the threaded block is sliding connection, and the connection mode between the filter block and the mounting frame is clamping connection. Preferably, a plurality of air holes are formed, and the air holes are distributed on the outer side of the air pipe in a polar axis mode. Preferably, the limiter comprises half-open pipes symmetrically arranged on the outer side of the air pipe, the half-open pipes are hinged through spring hinges, and handles are fixedly connected on the outer sides of the half-open pipes. Preferably, the inner side of the half open pipe is tightly attached to the outer side of the air pipe, the top end of the half open pipe is tightly attached to the bottom end of the mounting frame, and the bottom end of the half open pipe is tightly attached to the top end of the threaded block. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, through the arranged lubricating oil filling hole, the filling pipe, the thread groove, the thread block, the air inlet component, the piston and the compression spring, when the device is used, the thread block is screwed out, after a proper amount of lubricating oil is added into the inner side of the filling pipe, the installation frame is pulled and the thread block is screwed into the inner side of the thread groove, then the installation frame is loosened, and at the moment, the compression spring continuously resets to press the lubricating oil into the inner side of the transmission seat, the design can enable the rollers in the transmission seat to be filled with the lubricating oil, so that the lubrication is more sufficient, and dust can be prevented fro