CN111761423A

CN111761423A - High-precision magnetorheological polishing device

Info

Publication number: CN111761423A
Application number: CN202010713643.6A
Authority: CN
Inventors: 吴克钱; 毕成; 王鸿云; 姜宇新; 丁世杰; 刘强
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-10-13

Abstract

The invention discloses a high-precision magnetorheological polishing device which comprises a vessel, magnetorheological polishing liquid, at least one group of thin-wall rotating assemblies and at least two groups of magnetic field generating assemblies, wherein a polishing cavity is formed in the vessel, and the magnetorheological polishing liquid is placed in the polishing cavity; the thin-wall rotating assembly comprises a thin-wall pipe and a first motor, the thin-wall pipe is rotatably arranged in the polishing cavity, and the first motor is fixed on the outer wall of the vessel and drives the thin-wall pipe to rotate along the axis of the thin-wall pipe; and a group of magnetic field generating assemblies are arranged right below each group of thin-wall rotating assemblies and the side wall of the vessel and between adjacent thin-wall rotating assemblies, each magnetic field generating assembly comprises a magnetic field generator and a horizontal moving device, the magnetic field generators are fixed on the horizontal moving devices, and the horizontal moving devices move along the axial direction of the thin-wall pipe. The invention has the advantages that: the magnetorheological fluid is converted into the solid magnetic beam brush through the movable magnetic field generator component, the solid magnetic beam brush is continuously contacted with the part to be polished for polishing, the part to be polished can be polished in batches, and the polishing efficiency is greatly improved.

Description

High-precision magnetorheological polishing device

Technical Field

The invention relates to a high-precision magnetorheological polishing device.

Background

Some high-precision parts also have higher requirements on surface roughness, but because the size of the parts is smaller, the polishing effect is difficult to achieve by using common polishing equipment, so that the product yield is low, the polishing difficulty is large and the polishing time is long, and the part cost is greatly increased.

Disclosure of Invention

The invention aims to provide a high-precision magnetorheological polishing device, which can effectively solve the problems that the existing tiny parts are low in polishing precision and difficult to meet the polishing requirement.

In order to solve the technical problems, the invention is realized by the following technical scheme: the high-precision magnetorheological polishing device comprises a vessel, magnetorheological polishing liquid, at least one group of thin-wall rotating assemblies and at least two groups of magnetic field generating assemblies, wherein a polishing cavity is formed in the vessel, and the magnetorheological polishing liquid is placed in the polishing cavity;

the thin-wall rotating assembly comprises a thin-wall pipe and a first motor, the thin-wall pipe is rotatably arranged in the polishing cavity, and the first motor is fixed on the outer wall of the vessel and drives the thin-wall pipe to rotate along the axis of the thin-wall pipe;

and a group of magnetic field generating assemblies are arranged right below each group of thin-wall rotating assemblies and the side wall of the vessel and between adjacent thin-wall rotating assemblies, each magnetic field generating assembly comprises a magnetic field generator and a horizontal moving device, the magnetic field generators are fixed on the horizontal moving devices, and the horizontal moving devices move along the axis direction of the thin-wall pipe.

Preferably, thin wall rotating assembly still includes rotation axis, rotary disk, presss from both sides tight dish, sleeve and fixation nut, rotary disk and the tight dish of clamp set up respectively at the both ends of thin wall pipe, the motor shaft and the rotary disk fixed connection of first motor, rotation axis and tight dish fixed connection of clamp, the outer periphery of rotation axis is equipped with the screw thread, it has the through-hole to open on the lateral wall of household utensils, the sleeve sets up in the through-hole, the rotation axis passes the sleeve, all be equipped with on the rotation axis of sleeve both sides fixation nut, through the screw thread and the fixation nut cooperation of the outer periphery of rotation axis, the interval between tight dish and the rotary disk is pressed from both sides in the regulation, presss from both sides the elasticity of tight thin wall pipe, is convenient for maintain the thin wall.

Preferably, the magnetic field generating assembly further comprises a U-shaped frame and a second motor, the second motor is fixed on the horizontal moving device, the U-shaped frame is fixedly connected with a motor shaft of the second motor, the magnetic field generator is fixed at the top end of the U-shaped frame, the U-shaped frame is driven to rotate through the second motor, and the magnetic field generating assembly can be contacted with a part to be polished through a rotating mode while moving horizontally, so that the polishing efficiency is improved.

Preferably, the magnetorheological polishing solution comprises magnetorheological fluid, polishing particles and polishing needles, the magnetorheological fluid, the polishing particles and the polishing needles are uniformly mixed, the magnetorheological fluid is converted into a solid state under the action of a magnetic field, and the polishing particles and the polishing needles are mixed in the magnetorheological fluid, so that the surface of the mold is polished better, and a better polishing effect is achieved.

Compared with the prior art, the invention has the advantages that: the thin-walled tube is rotated to drive the part to be polished and the magnetorheological polishing solution to be disturbed, the magnetorheological polishing solution is converted into a solid magnetic beam brush through the movable magnetic field generator component and is continuously contacted with the part to be polished for polishing, and the magnetorheological polishing solution is continuously converted from a liquid state into a solid state and can be attached to the tiny surface of the part to be polished in the liquid state and then is converted into the solid state by a magnetic field for polishing, so that the tiny surface of the part to be polished can be polished to the proper position, the specified polishing effect is achieved, the parts to be polished can be polished in batches by the method, and the polishing efficiency is greatly improved.

Drawings

FIG. 1 is a front view of a high precision magnetorheological finishing device of the present invention in a non-operational state;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a front view of the working state of the high precision magnetorheological finishing device of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 and fig. 2, the high-precision magnetorheological polishing apparatus according to an embodiment of the present invention includes a vessel 4, magnetorheological polishing liquid 1, at least one thin-wall rotating assembly, and at least two sets of magnetic field generating assemblies, wherein a polishing cavity is formed in the vessel 4, and the magnetorheological polishing liquid 1 is placed in the polishing cavity;

the thin-wall rotating assembly comprises a thin-wall pipe 100 and a first motor 3, the thin-wall pipe 100 is rotatably arranged in the polishing cavity, and the first motor 3 is fixed on the outer wall of the vessel 4 and drives the thin-wall pipe 100 to rotate along the axis of the thin-wall pipe;

the magnetic field generating assembly comprises a magnetic field generator 21 and a horizontal moving device, the magnetic field generator 21 is fixed on the horizontal moving device, the horizontal moving device moves along the axis direction of the thin-walled tube 100, the horizontal moving device can refer to a tool rest moving mechanism on a lathe, for example, a screw rod and a guide rod are combined, a workbench is arranged on the motor driving screw rod, the workbench is driven to horizontally move through the screw rod, the moving direction of the workbench can be controlled by controlling the rotating direction of the motor, and the magnetic field generator is fixed on the workbench.

The thin-walled tube 100 is rotated to drive the part to be polished and the magnetorheological polishing solution 1 to be disturbed, the magnetorheological fluid 13 is converted into a solid magnetic beam brush through the movable magnetic field generator 21 assembly and is continuously contacted with the part to be polished for polishing, the magnetorheological polishing solution 1 is continuously converted from a liquid state into a solid state and can be attached to the tiny surface of the part to be polished in the liquid state and then is converted into the solid state by a magnetic field for polishing, so that the tiny surface of the part to be polished can be polished to the proper position, the specified polishing effect is achieved, the method can be used for polishing the part to be polished in batches, and the polishing efficiency is greatly improved.

Further, in order to ensure that the thin-wall rotating assembly normally operates, the thin-wall rotating assembly further comprises a rotating shaft 64, a rotating disc 5, a clamping disc 61, a sleeve 63 and a fixing nut 62, the rotating disc 5 and the clamping disc 61 are respectively arranged at two ends of the thin-wall pipe 100, a motor shaft of the first motor 3 is fixedly connected with the rotating disc 5, the rotating shaft 64 is fixedly connected with the clamping disc 61, threads are arranged on the outer circumferential surface of the rotating shaft 64, a through hole is formed in the side wall of the vessel 4, the sleeve 63 is arranged in the through hole, the rotating shaft 64 penetrates through the sleeve 63, the fixing nut 62 is arranged on the rotating shaft 64 on two sides of the sleeve 63, and thus the thin-wall pipe 100 is driven by the first motor 3 to rotate quickly.

In addition, in order to improve the polishing efficiency, the magnetic field generating assembly further comprises a U-shaped frame 22 and a second motor 23, the second motor 23 is fixed on the horizontal moving device, a motor shaft of the U-shaped frame 22 is fixedly connected with the second motor 23, the magnetic field generator 21 is fixed at the top end of the U-shaped frame 22, and the second motor 23 can drive the magnetic field generator 21 to rotate while the horizontal moving device drives the magnetic field generator 21 to move horizontally, so that the polishing efficiency is further improved.

The magnetorheological polishing solution 1 generally comprises magnetorheological fluid 13, polishing particles 12 and polishing needles 11, the specifications of the polishing particles 12 and the polishing needles 11 are adjusted according to the requirements of the surface roughness of a mold to be polished, and the proportions of the polishing particles 12, the polishing needles 11 and the magnetorheological fluid 13 can be determined after accounting according to the processing cost.

As shown in fig. 3, when the polishing tool is used, a part to be polished and magnetorheological polishing solution 1 are placed in a polishing cavity of a vessel 4, then a horizontal moving device, a second motor 23 and a first motor 3 are started, the first motor 3 drives a thin-walled tube 100 to rotate around the axis of the thin-walled tube, the horizontal moving device drives a magnetic field generator 21 to do linear reciprocating motion, the second motor 23 drives the magnetic field generator 21 to rotate along the axis of a U-shaped frame 22, and the magnetorheological polishing solution 1 is changed into a solid magnetic beam brush under the action of the magnetic field generator 21, so that the part to be polished in the polishing cavity is polished in an all-directional manner.

The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.

Claims

1. High accuracy magnetic current becomes burnishing device, its characterized in that: the magnetorheological polishing device comprises a vessel (4), magnetorheological polishing liquid (1), at least one group of thin-wall rotating assemblies and at least two groups of magnetic field generating assemblies, wherein a polishing cavity is formed in the vessel (4), and the magnetorheological polishing liquid (1) is placed in the polishing cavity;

the thin-wall rotating assembly comprises a thin-wall pipe (100) and a first motor (3), the thin-wall pipe (100) is rotatably arranged in the polishing cavity, and the first motor (3) is fixed on the outer wall of the vessel (4) and drives the thin-wall pipe (100) to rotate along the axis of the thin-wall pipe;

a set of magnetic field generation assembly is arranged between each set of thin-wall rotating assembly and the side wall of the vessel (4) and right below the adjacent thin-wall rotating assemblies, each magnetic field generation assembly comprises a magnetic field generator (21) and a horizontal moving device, the magnetic field generators (21) are fixed on the horizontal moving devices, and the horizontal moving devices move along the axis direction of the thin-wall tube (100).

2. The high accuracy magnetorheological finishing device of claim 1, wherein: thin wall rotating assembly still includes rotation axis (64), rotary disk (5), presss from both sides tight dish (61), sleeve (63) and fixation nut (62), rotary disk (5) and clamp tight dish (61) set up respectively at the both ends of thin wall pipe (100), the motor shaft and rotary disk (5) fixed connection of first motor (3), rotation axis (64) and clamp tight dish (61) fixed connection, the outer periphery of rotation axis (64) is equipped with the screw thread, it has the through-hole to open on the lateral wall of household utensils (4), sleeve (63) set up in the through-hole, sleeve (63) are passed to rotation axis (64), all be equipped with on rotation axis (64) of sleeve (63) both sides fixation nut (62).

3. The high accuracy magnetorheological finishing device of claim 1, wherein: the magnetic field generating assembly further comprises a U-shaped frame (22) and a second motor (23), the second motor (23) is fixed on the horizontal moving device, the U-shaped frame (22) is fixedly connected with a motor shaft of the second motor (23), and the magnetic field generator (21) is fixed at the top end of the U-shaped frame (22).

4. The high accuracy magnetorheological finishing device of claim 1, wherein: the magnetorheological polishing solution (1) comprises magnetorheological fluid (13), polishing particles (12) and a polishing needle (11), and the magnetorheological fluid (13), the polishing particles (12) and the polishing needle (11) are uniformly mixed.