Search

CN-224209469-U - Radial flexible force control device

CN224209469UCN 224209469 UCN224209469 UCN 224209469UCN-224209469-U

Abstract

The utility model discloses a radial flexible force control device which comprises a tool, a main shaft, a clamp, a sealing element, a rotating shaft, a universal joint, a plurality of pistons and a cylinder body, wherein the universal joint and the clamp are respectively arranged in the cylinder body, the clamp is fixedly connected with the universal joint through bolts, the clamp is arranged on the periphery of the main shaft and used for clamping and fixing the main shaft, the main shaft penetrates through the cylinder body, the sealing element is arranged at the joint of the cylinder body and the main shaft, the universal joint is rotationally connected with the cylinder body through the rotating shaft, a plurality of piston mounting holes are uniformly distributed on the inner wall of the cylinder body along the circumferential direction, one end of each piston is slidably arranged in each piston mounting hole, the other end of each piston abuts against the bottom of the universal joint, the cylinder body is provided with a compressed air inlet and a compressed air outlet, and the piston is driven by compressed air. According to the utility model, the contact force is regulated by air pressure, so that the polishing tool is quickly and automatically aligned, the polishing tool is controlled to be timely regulated along with the relative size difference of the surface, the force of the contact surface with a polished product is kept constant, and the consistency and stability of polishing quality are ensured.

Inventors

  • GU HAILIN
  • Liu Kuanshan

Assignees

  • 江苏新控智能机器科技有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (7)

  1. 1. The radial flexible force control device is characterized by comprising a tool (2), a main shaft (1-2), a holding clamp (1-3), a sealing piece (1-4), a rotating shaft (1-5), a universal joint (1-6), a plurality of pistons (1-7) and a cylinder body (1-8); The universal joint (1-6) and the holding clamp (1-3) are respectively arranged in the cylinder body (1-8), the holding clamp (1-3) is fixedly connected with the universal joint (1-6) through bolts, the holding clamp is arranged on the periphery of the main shaft (1-2) and used for clamping and fixing the main shaft (1-2), the main shaft (1-2) penetrates through the cylinder body (1-8), a sealing piece (1-4) is arranged at the joint of the cylinder body (1-8) and the main shaft (1-2), the universal joint (1-6) is rotationally connected with the cylinder body (1-8) through a rotating shaft (1-5), a plurality of piston (1-7) mounting holes are uniformly distributed on the inner wall of the cylinder body (1-8) along the circumferential direction, one end of each piston (1-7) is slidably arranged in each piston mounting hole, the other end of each piston abuts against the bottom of the universal joint (1-6), the cylinder body (1-8) is provided with a compressed air inlet and a compressed air outlet, and each piston (1-7) is driven by compressed air.
  2. 2. A radially flexible force control device according to claim 1, characterized in that the axis of the rotating shaft (1-5) is arranged eccentrically to the axis of the universal joint (1-6) forming an eccentricity, the rotating shaft (1-5) is rotatably connected to the cylinder (1-8) by means of a bearing, the universal joint (1-6) being oscillated about the axis of the rotating shaft (1-5).
  3. 3. A radially flexible force control device according to claim 1, characterized in that the number of the pistons (1-7) is 3-6, the pistons are uniformly distributed along the circumferential direction of the inner wall of the cylinder (1-8), an air pressure cavity is formed between each piston (1-7) and the cylinder (1-8), the compressed air inlet is communicated with the air pressure cavity, and the abutting force of the pistons (1-7) on the universal joint (1-6) is regulated through the air pressure.
  4. 4. The radial flexible force control device according to claim 1, wherein the sealing element (1-4) is of an annular corrugated sleeve structure and sleeved on the outer side of the main shaft (1-2), and two ends of the sealing element are fixedly connected with the outer wall of the cylinder body (1-8) and the outer part of the main shaft respectively and used for isolating the inner part of the cylinder body (1-8) from the external environment.
  5. 5. The radial flexible force control device according to claim 1 is characterized by further comprising a mounting structure plate (5), wherein the cylinder body (1-8) is fixed on a tail end flange of the robot (6) or a CNC machine tool workbench through the mounting structure plate (5), and the spindle (1-2) is provided with an electric spindle (4), a pneumatic spindle or a pneumatic file machine.
  6. 6. The radially flexible force control device according to claim 1, characterized in that the tool (2) is connected to the spindle (1-2) by means of a quick change mechanism.
  7. 7. The radial flexible force control device according to claim 1, wherein the bottom of the universal joint (1-6) is provided with an abutting plane matched with the piston (1-7), and the abutting plane is in contact with a spherical structure at the end part of the piston (1-7) to realize full-attitude force transmission.

Description

Radial flexible force control device Technical Field The utility model relates to the field of machining automation, in particular to a radial flexible force control device for grinding and deburring. Background With the popularization of robot polishing and the improvement of the requirements of manpower on working environments, the surface deburring operation of various casting parts (such as automobile engine shells), plastic parts and machining parts (such as gears) is increasingly carried out by adopting robots to install various polishing tools (electric spindles and pneumatic spindles) instead of manual polishing. The traditional mode is that the robot directly clamps the polishing tool, and the running track of the robot is edited according to the surface characteristics of the product. However, the method has a plurality of defects that the editing process is complicated, the editing process is in rigid contact with the polished product, and when the dimensional tolerance of the surface of the polished product is slightly large or the relative position of the polished product after workpiece replacement is slightly deviated, obvious difference can occur in polishing effect. In addition, when the polishing head is frequently replaced, all track points of the robot need to be recalibrated, and time and labor are wasted. Especially when large-scale complicated work piece, like automobile engine shell, glass fiber goods, large-scale sheet metal component and foundry goods and injection molding surface burring, the condition that can appear touching, not laminating or contact excessively can appear, lead to instrument or work piece damage, can't realize automatic burring in batches. Accordingly, there is a need for a radially flexible force control device that addresses the above-described issues. Disclosure of utility model The utility model aims to solve the technical problem of providing a radial flexible force control device, which can realize the rapid automatic centering of a polishing tool by adjusting the contact force through air pressure, control the timely adjustment of the polishing tool along with the relative size difference of the surface, keep the constant force of the contact surface with the polished product and ensure the consistency and stability of the polishing quality. In order to solve the technical problems, the utility model adopts the following technical scheme that the radial flexible force control device comprises a tool, a main shaft, a holding clamp, a sealing element, a rotating shaft, a universal joint, a plurality of pistons and a cylinder body; The universal joint and the holding clamp are respectively arranged in the cylinder body, the holding clamp is fixedly connected with the universal joint through bolts, the holding clamp is arranged on the periphery of the main shaft and used for clamping and fixing the main shaft, the main shaft penetrates through the cylinder body, a sealing piece is arranged at the joint of the cylinder body and the main shaft, the universal joint is rotationally connected with the cylinder body through a rotating shaft, a plurality of piston mounting holes are uniformly distributed on the inner wall of the cylinder body along the circumferential direction, one end of each piston is slidably arranged in each piston mounting hole, the other end of each piston abuts against the bottom of the universal joint, a compressed air inlet and a compressed air outlet are formed in the cylinder body, and the piston is driven by compressed air. Further, the axis of the rotating shaft and the axis of the universal joint are eccentrically arranged to form eccentricity, the rotating shaft is rotationally connected with the cylinder body through a bearing, and the universal joint swings around the axis of the rotating shaft. Further, the number of the pistons is 3-6, the pistons are uniformly distributed along the circumferential direction of the inner wall of the cylinder body, an air pressure cavity is formed between each piston and the cylinder body, the compressed air inlet is communicated with the air pressure cavity, and the abutting force of the pistons on the universal joint is regulated through air pressure. Further, the sealing piece is of an annular corrugated sleeve structure and sleeved on the outer side of the main shaft, and two ends of the sealing piece are fixedly connected with the outer wall of the cylinder body and the outer portion of the main shaft respectively and used for isolating the inner portion of the cylinder body from the external environment. The cylinder body is fixed on a flange at the tail end of the robot or a CNC machine tool workbench through the mounting structure plate, and the spindle is provided with an electric spindle, a pneumatic spindle or a pneumatic file machine. Further, the tool is connected with the spindle through a quick change mechanism. Further, the bottom of the universal joint is provided with an abutti