CN111283482A

CN111283482A - Multi-head self-adaptive magnetorheological polishing device

Info

Publication number: CN111283482A
Application number: CN202010283161.1A
Authority: CN
Inventors: 毕成; 王鸿云; 周芬芬
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-06-16
Anticipated expiration: 2040-04-07
Also published as: CN111283482B

Abstract

The invention discloses a multi-head self-adaptive magnetorheological polishing device, which comprises a clamping plate and a magnetorheological polishing knife; the magnetorheological polishing knife comprises a tube body, magnetorheological polishing liquid, a polishing head and a polishing ball, wherein the magnetorheological polishing liquid is arranged in the tube body, the polishing head is detachably connected to the bottom of the tube body, the polishing head and the polishing ball are both magnetic, and a containing cavity containing the polishing ball is formed by the polishing head and the lower part of the tube body to contain the polishing ball; the magnetorheological polishing device is characterized in that the clamping plate is provided with a plurality of through holes, a magnetorheological polishing knife penetrates through each through hole, the top of each magnetorheological polishing knife is positioned on the top surface of the clamping plate, a boss is arranged on the tube body of each magnetorheological polishing knife, and a self-adaptive spring is sleeved on the tube body between each boss and the bottom surface of the clamping plate. The invention has the advantages that: each magnetorheological polishing knife is controlled to be in contact with the processing surfaces of the workpiece at different heights through the self-adaptive spring, so that the workpiece can be processed by a plurality of knives simultaneously, the polishing precision is high, and the processing efficiency is greatly improved.

Description

Multi-head self-adaptive magnetorheological polishing device

Technical Field

The invention relates to a multi-head self-adaptive magnetorheological polishing device.

Background

When some elements with higher precision requirements and complex surfaces need to be polished, the existing polishing tool cannot meet the requirements by using polishing media such as sponge sand and the like, and when the polishing surface is small or complex, the size of the polishing media attached to the base is limited, so that a small area cannot be deeply polished.

And only one polishing knife is used, so that the efficiency is low, and a plurality of polishing knives are required to be used to operate together, but if each knife is controlled independently during the operation of a plurality of knives, the cost of processing equipment is greatly increased.

Disclosure of Invention

The invention aims to provide a multi-head self-adaptive magnetorheological polishing device, which can effectively solve the problem that the existing high-precision small-size polishing is difficult.

In order to solve the technical problems, the invention is realized by the following technical scheme: the multi-head self-adaptive magnetorheological polishing device comprises a clamping plate and a magnetorheological polishing knife;

the magnetorheological polishing knife comprises a tube body, magnetorheological polishing liquid, a polishing head and a polishing ball, wherein a placing hole is formed in the tube body along the axis, the magnetorheological polishing liquid is arranged in the placing hole, the polishing head is detachably connected to the bottom of the tube body, the polishing head and the polishing ball are both magnetic, a containing cavity for containing the polishing ball is formed at the lower part of the tube body, the polishing ball can freely rotate in the containing cavity, and a gap for the magnetorheological polishing liquid to pass through is reserved between the polishing ball and the inner wall of the containing cavity;

the magnetorheological polishing device is characterized in that the clamping plate is provided with a plurality of through holes, a magnetorheological polishing knife penetrates through each through hole, the top of each magnetorheological polishing knife is positioned on the top surface of the clamping plate, a boss is arranged on the tube body of each magnetorheological polishing knife, and a self-adaptive spring is sleeved on the tube body between each boss and the bottom surface of the clamping plate.

Preferably, the top surface of body is equipped with the detachable head, the diameter of head is greater than the diameter of through-hole. The end socket has the advantages that the purpose of sealing the placing hole is achieved, the height of the magnetorheological polishing knife descending can be controlled, and the magnetorheological polishing knife is prevented from being separated from the clamping plate.

Preferably, a piston is further arranged in the placing hole, and a pressurizing spring is arranged in the placing hole between the piston and the end enclosure. The piston is pressed by the pressurizing spring, and the piston pushes the magnetorheological polishing liquid in the placing hole to extrude outwards, so that the magnetorheological polishing liquid can be extruded out to rub and polish the surface of the workpiece better.

Preferably, the lower part of the pipe body is provided with a hemispherical upper placing cavity, and the top of the upper placing cavity is communicated with the placing hole; the polishing head is internally provided with a lower placing cavity, the bottom of the lower placing cavity is communicated with the outside, and the upper placing cavity and the lower placing cavity form a containing cavity. The two hemispherical placing cavities are convenient for the installation and fixation of the polishing ball.

Preferably, at least one diversion trench is formed in the side wall of the accommodating cavity. As the size of the accommodating cavity cannot be too large than that of the polishing ball, a diversion trench is required to be formed for allowing enough magnetorheological polishing fluid to flow out.

Preferably, the bottom of the upper placing cavity and/or the top of the lower placing cavity are/is provided with an annular liquid storage cavity. The liquid storage cavity can pre-store a part of magnetorheological polishing liquid in the accommodating cavity, so that normal polishing is ensured.

Compared with the prior art, the invention has the advantages that: a plurality of magneto-rheological polishing knives can be arranged on the clamping plate, and each magneto-rheological polishing knife is controlled to be in contact with the processing surface of the workpiece at different heights through a self-adaptive spring, so that the workpiece can be processed by the plurality of knives simultaneously, and the processing efficiency is greatly improved.

The polishing precision of the magnetorheological polishing solution is finer and smoother compared with the traditional material, the magnetorheological polishing solution attached to the magnetic polishing ball can be converted into a solid-like form to polish the surface of a workpiece through the magnetic polishing ball, other adhesives are not needed for the magnetorheological polishing solution to be attached to the polishing ball, and the magnetorheological polishing solution is continuously taken out to rub the surface of the workpiece along with the rotation of the polishing ball to polish, so that the whole polishing radius can be smaller, and the magnetorheological polishing solution is suitable for complex environments.

Drawings

FIG. 1 is a schematic structural diagram of a multi-head adaptive magnetorheological polishing apparatus according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of the connection between the tube and the polishing head according to 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.

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 to 4, a multi-head adaptive magnetorheological polishing apparatus according to an embodiment of the present invention includes a clamping plate 1 and a magnetorheological polishing blade 2;

the magnetorheological polishing knife 2 comprises a tube body 3, magnetorheological polishing liquid 4, a polishing head 5 and a polishing ball 6, a placing hole 7 is formed in the tube body 3 along the axis, the magnetorheological polishing liquid 4 is arranged in the placing hole 7, the polishing head 5 is detachably connected to the bottom of the tube body 3, the polishing head 5 and the polishing ball 6 are both magnetic, a containing cavity 8 for containing the polishing ball 6 is formed at the lower part of the polishing head 5 and the tube body 3, the polishing ball 6 can freely rotate in the containing cavity 8, and a gap for the magnetorheological polishing liquid 4 to pass through is reserved between the polishing ball 6 and the inner wall of the containing cavity;

the magnetorheological polishing jig is characterized in that the clamping plate 1 is provided with a plurality of through holes, a magnetorheological polishing knife 2 penetrates through each through hole, the top of each magnetorheological polishing knife 2 is positioned on the top surface of the clamping plate 1, a boss 9 is arranged on the tube body 3 of each magnetorheological polishing knife 2, and a self-adaptive spring 10 is sleeved on the tube body 3 between each boss 9 and the bottom surface of the clamping plate 1.

A plurality of magneto-rheological polishing knives 2 can be arranged on the clamping plate 1, and each magneto-rheological polishing knife 2 is controlled to be in contact with the processing surfaces of the workpieces at different heights through a self-adaptive spring 10, so that the workpieces can be processed by the plurality of knives simultaneously, and the processing efficiency is greatly improved.

The polishing precision of the magnetorheological polishing solution 4 is finer and smoother compared with the traditional material, the magnetorheological polishing solution 4 attached to the magnetic polishing ball 6 can be converted into a solid-like form to polish the surface of a workpiece, the magnetorheological polishing solution 4 is attached to the polishing ball 6 without other adhesives, and the magnetorheological polishing solution 4 is continuously taken out along with the rotation of the polishing ball 6 to rub with the surface of the workpiece for polishing, so that the whole polishing radius can be smaller, and the magnetorheological polishing solution is suitable for complex environments.

Further, in order to provide enough downward flowing pressure for the magnetorheological polishing liquid 4 in the placing hole 7, the top of the pipe body 3 is provided with a detachable end enclosure 11, the detachable mode can be connected in a threaded connection or a buckling mode, a piston 12 is arranged in the placing hole 7, a pressurizing spring 13 is arranged in the placing hole 7 between the piston 12 and the end enclosure 11, the piston 12 is pushed to move downwards through the elasticity of the pressurizing spring 13 to provide pressure for the magnetorheological polishing liquid 4, and the diameter of the end enclosure 11 can be made to be larger than that of a through hole in order to ensure that the magnetorheological polishing knife 2 cannot be separated from the clamping plate 1 downwards, so that when the magnetorheological polishing knife 2 does not receive upward force, the end enclosure 11 can provide lifting force.

The containing cavity 8 is generally composed of an upper placing cavity 14 and a lower placing cavity 15 which are hemispherical, the upper placing cavity 14 is positioned at the lower part of the pipe body 3, the top of the upper placing cavity 14 is communicated with the placing hole 7, the lower placing cavity 15 is positioned in the polishing head 5, and the bottom of the lower placing cavity is communicated with the outside, so that the containing cavity 8 is spliced into a sphere with upper and lower openings, the polishing ball 6 can be accommodated to roll in the sphere, but the inner diameter of the containing cavity 8 is only slightly larger than the size of the polishing ball 6, the top or the bottom of the containing cavity 8 can be blocked when the polishing ball 6 is subjected to an external force, therefore, in order to ensure the flow of the magnetorheological polishing liquid 4, at least one guide groove 16 is arranged on the side wall of the containing cavity 8, the magnetorheological polishing liquid 4 in the placing hole 7 can flow out as much as possible through the guide groove 16, an annular liquid storage cavity 17 can be arranged at the bottom of the upper placing cavity 14 and/or the top of the, the storage capacity of the magnetorheological polishing solution 4 in the placing cavity is improved.

When the magnetorheological finishing tool is used, the self-adaptive spring 10 is sleeved outside the pipe body 3 of the magnetorheological finishing tool 2, then the top of the pipe body 3 penetrates through the through hole in the clamping plate 1 from the lower part of the clamping plate 1 to the upper part, and then the top of the pipe body 3 is covered with the sealing head 11, so that the assembly of the magnetorheological finishing tool 2 and the clamping plate 1 is completed. During polishing, the clamping plate 1 is lowered to a proper height, the polishing ball 6 is in rolling contact with the surface of a workpiece to be processed, the magnetorheological polishing liquid 4 is taken out, the magnetorheological polishing liquid 4 is arranged between the polishing ball 6 and the workpiece to be processed, the surface of the workpiece to be processed is polished, the magnetorheological polishing knife 2 is driven by the clamping plate 1 to move or the workpiece to be processed moves, and the height of the magnetorheological polishing knife 2 is controlled by the self-adaptive spring 10 at different positions of the surface of the workpiece. After the device is adopted, a plurality of magnetorheological polishing knives 2 can be controlled at one time to polish the surface of a workpiece, so that the polishing efficiency is greatly improved, meanwhile, due to the adoption of the magnetorheological polishing liquid 4, the polishing precision is greatly improved, the polishing of fine positions on the surface of the workpiece is more precise, and the number of dead angles is greatly reduced.

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. The multi-head self-adaptive magnetorheological polishing device is characterized in that: comprises a splint (1) and a magneto-rheological polishing knife (2);

the magnetorheological polishing knife (2) comprises a tube body (3), magnetorheological polishing liquid (4), a polishing head (5) and a polishing ball (6), a placing hole (7) is formed in the tube body (3) along the axis, the magnetorheological polishing liquid (4) is arranged in the placing hole (7), the polishing head (5) is detachably connected to the bottom of the tube body (3), the polishing head (5) and the polishing ball (6) are both magnetic, a containing cavity (8) for containing the polishing ball (6) is formed at the lower parts of the polishing head (5) and the tube body (3), the polishing ball (6) can freely rotate in the containing cavity (8), and a gap for the magnetorheological polishing liquid (4) to pass through is reserved between the polishing ball (6) and the inner wall of the containing cavity;

the magnetorheological polishing device is characterized in that a plurality of through holes are formed in the clamping plate (1), one magnetorheological polishing knife (2) penetrates through each through hole, the top of each magnetorheological polishing knife (2) is located on the top surface of the clamping plate (1), a boss (9) is arranged on the tube body (3) of each magnetorheological polishing knife (2), and a self-adaptive spring (10) is sleeved on the tube body (3) between the boss (9) and the bottom surface of the clamping plate (1).

2. The multi-head adaptive magnetorheological finishing device according to claim 1, wherein: the top surface of body (3) is equipped with detachable head (11), the diameter of head (11) is greater than the diameter of through-hole.

3. The multi-head adaptive magnetorheological finishing device according to claim 2, wherein: a piston (12) is further arranged in the placing hole (7), and a pressurizing spring (13) is arranged in the placing hole (7) between the piston (12) and the end enclosure (11).

4. The multi-head adaptive magnetorheological finishing device according to claim 1, wherein: the lower part of the pipe body (3) is provided with a hemispherical upper placing cavity (14), and the top of the upper placing cavity (14) is communicated with the placing hole (7); a lower placing cavity (15) is formed in the polishing head (5), the bottom of the lower placing cavity (15) is communicated with the outside, and the upper placing cavity (14) and the lower placing cavity (15) form a containing cavity (8).

5. The multi-head adaptive magnetorheological finishing device according to claim 4, wherein: the side wall of the accommodating cavity (8) is provided with at least one flow guide groove (16).

6. The multi-head adaptive magnetorheological finishing device according to claim 4, wherein: an annular liquid storage cavity (17) is formed at the bottom of the upper placing cavity (14) and/or the top of the lower placing cavity (15).