CN203266379U - Suspension polishing device based on permanent magnet rings - Google Patents

Abstract

A suspension polishing device based on a permanent magnetic ring, including a machine base, a suspension base disc and a grinding disc, the suspension base disc is connected with a pressurized assembly, the grinding disc rotates around a fixed central axis through a main drive, and the suspension base The opposite surface of the disc and the grinding disc is provided with a wedge-shaped groove and a processing station for placing the workpiece to be processed along the circumferential direction. The wedge-shaped groove is filled with grinding liquid, and the wedge-shaped groove and the processing station are arranged at intervals. U-shaped grinding disc, the suspension polishing device also includes a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is set on the outer surface of the suspension base plate, and the second permanent magnet ring is set on the U-shaped The inner surface of the grinding disc, the suspension base disc is set in the U-shaped grinding disc and has a gap with the inner wall of the U-shaped grinding disc, and the outer ring of the first permanent magnet ring and the inner ring of the second permanent magnet ring have the same magnetic properties. The utility model adopts non-contact connection to eliminate friction and collision, smooth grinding, small surface damage and high quality.

Description

A suspension polishing device based on a permanent magnetic ring

technical field

The utility model relates to a polishing device, in particular to a suspension polishing device.

Background technique

Fluid polishing has become one of the important means to obtain ultra-smooth surfaces. Compared with rigid contact polishing, the contact state between abrasive grains and workpiece surface is soft contact, which can be obtained by improving the contour of abrasive grain processing. The ultra-smooth surface with roughness can also improve the contact state between the abrasive grains and the workpiece surface to obtain less damage-free processing effect. For example, the patent application number 201210140631.4 "Actively Driven Suspension Base Polishing Device" discloses an actively driven suspension base plate polishing device that can reduce the thickness of the processed metamorphic layer and obtain higher surface quality at the same time. , the device is based on the patent application No. 200910153716.4 "Correction Ring Drive Mechanism for Actively Driven Grinding Device", adopts the design of a wedge-shaped groove on the circumference of the suspension base plate, and uses the hydrodynamic phenomenon and powder action to make the polishing particles Soft contact with the workpiece surface. However, tests have shown that the device has the following problems:

The device drives the correction ring through the active drive device, and the suspension base plate is stuck in the correction ring. Since there is only friction constraint between the suspension base plate and the correction ring, the high-speed rotating suspension base plate will not rotate smoothly, which will cause collision and jamming. , Tilt and other phenomena, thus affecting the surface quality of polishing.

Contents of the invention

In order to overcome the shortcomings of unstable grinding and low surface quality in the existing suspension grinding and polishing equipment, the utility model provides a non-contact connection to eliminate friction and collision, smooth grinding, small surface damage and high quality. Suspension polishing device for rings.

The technical scheme that the utility model solves its technical problem adopts is:

A suspension polishing device based on a permanent magnetic ring, including a machine base, a suspension base disc and a grinding disc, the suspension base disc is connected with a pressurized assembly, the grinding disc rotates around a fixed central axis through a main drive, and the suspension base The opposite surface of the disc and the grinding disc is provided with a wedge-shaped groove and a processing station for placing the workpiece to be processed along the circumferential direction. The wedge-shaped groove is filled with grinding liquid, and the wedge-shaped groove and the processing station are arranged at intervals. U-shaped grinding disc, the suspension polishing device also includes a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is set on the outer surface of the suspension base plate, and the second permanent magnet ring is set on the U-shaped The inner surface of the grinding disc, the suspension base disc is set in the U-shaped grinding disc and has a gap with the inner wall of the U-shaped grinding disc, and the outer ring of the first permanent magnet ring and the inner ring of the second permanent magnet ring have the same magnetic properties.

Further, the pressurizing component is a weight, and the weight is pressurized on the suspension base plate. Other pressurized components are also available.

Furthermore, a polishing cloth is laid on the bottom surface of the inner wall of the U-shaped grinding disc.

The technical idea of the utility model is: using the principle of electromagnetic opposites attracting the same and repelling the same, a permanent magnetic ring is installed on the outer ring of the suspension base plate and the inner ring of the retaining ring, so that the suspension base plate and the retaining ring do not contact each other, avoiding Collision, stuck and other phenomena.

The opposite surface of the suspension base plate and the grinding plate is provided with a plurality of wedge-shaped grooves along the circumferential direction, and the gap between the suspension base plate and the grinding plate is filled with polishing liquid, that is, the wedge-shaped grooves are filled with polishing liquid, and the processed workpiece is attached to the suspension base plate with a wedge-shaped The U-shaped grinding disc rotates with the spindle, and the bottom surface of the inner wall of the U-shaped grinding disc is covered with polishing cloth. There is relative motion between the suspended base plate and the U-shaped grinding disc, and the hydrodynamic pressure generated by the wedge-shaped groove The substrate is raised to a height H, so that the particles in the polishing liquid do not have strong rigid contact but become soft collisions of polishing particles when polishing the workpiece, thereby reducing the damage to the workpiece.

The beneficial effects of the utility model are mainly manifested in that non-contact connection is adopted to eliminate friction and collision, smooth grinding, small surface damage and high quality.

Description of drawings

Fig. 1 is a schematic diagram of a suspension polishing device based on a permanent magnetic ring.

Fig. 2 is a sectional view A-A of a suspension polishing device based on a permanent magnetic ring.

Fig. 3 is a schematic diagram of a permanent magnet ring.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figures 1 to 3, a suspension polishing device based on a permanent magnet ring includes a suspension base plate 5, a U-shaped grinding disc 1 and a main drive 9, the first permanent magnet ring 4 is set on the outer surface of the suspension base plate 5, and the second Two permanent magnetic rings 6 are set on the inner surface of the U-shaped grinding disc 1, and the suspension base plate 5 is set in the U-shaped grinding disc 1 and has a certain gap with the inner wall of the U-shaped grinding disc 1. The first permanent magnetic ring 4 The outer ring and the inner ring of the second permanent magnet ring 6 have the same magnetic properties, the weight 7 is pressed on the suspension base plate 5, the inner wall bottom surface of the U-shaped grinding disc 1 is covered with a polishing cloth 2, and the U-shaped grinding disc 1 is ground. It is rotated around a fixed central axis by the main drive 9 .

The opposite surface of the suspension base plate 5 and the U-shaped grinding disc 1 is provided with a plurality of wedge-shaped grooves 10 along the circumferential direction, and the bottom surface of the suspension base plate 5 and the U-shaped grinding disc 1 are filled with a polishing liquid 3. Stick on the plane with the wedge-shaped groove of the suspension base plate 5 without affecting the wedge-shaped groove.

The pressurizing component is a weight 7, and the weight 7 is pressurized on the suspension base plate. Other pressurized components are also available.

Claims (3)

1. A suspension polishing device based on a permanent magnetic ring, comprising a base, a suspension base plate and a grinding disc, the suspension base plate is connected with a pressurized assembly, and the grinding disc rotates around a fixed central axis through a main drive, the The opposite surface of the suspension base plate and the grinding disc is provided with a wedge-shaped groove and a processing station for placing the workpiece to be processed along the circumferential direction. The wedge-shaped groove is filled with grinding liquid, and the wedge-shaped groove and the processing station are arranged at intervals. : the grinding disc is a U-shaped grinding disc, the suspension polishing device also includes a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is set on the outer surface of the suspension base disc, and the second permanent magnet ring The magnetic ring is set on the inner surface of the U-shaped grinding disc, the suspension base disc is set in the U-shaped grinding disc and has a gap with the inner wall of the U-shaped grinding disc, the outer ring of the first permanent magnet ring and the inner ring of the second permanent magnet ring The magnetism is the same. 2 . The suspension polishing device based on a permanent magnetic ring according to claim 1 , wherein the pressurizing component is a weight, and the weight presses on the suspension base plate. 3 . 3. The suspension polishing device based on a permanent magnetic ring according to claim 1 or 2, characterized in that: the bottom surface of the inner wall of the U-shaped grinding disc is covered with a polishing cloth.

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