The working principle of the permanent magnet chuck: the magnetic force line comes out from the N pole of the magnet, passes through the yoke, passes through the ferromagnetic workpiece, and then returns to the yoke to enter the S pole of the magnet. In this way, the permanent magnet chuck can firmly suck the workpiece on the working pole of the permanent magnet chuck. If the magnetic field line of the permanent magnet chuck is less than the working pole surface of the permanent magnet chuck, the closed circuit of the magnetic circuit is formed inside the permanent magnet chuck, and almost no magnetic field line comes out from the working pole surface of the permanent magnet chuck, so the workpiece will not produce suction, and it can be successfully unloaded.

Composition of permanent magnet chuck:
1. Magnetic circuit of the permanent magnet chuck

When designing a permanent magnet chuck, the magnetic circuit should first be carefully designed, and a good magnetic circuit structure can try to let more magnetic flux gather in the working surface, corresponding to the requirements of different workpieces to meet the holding processing.

2, permanent magnet sucker – magnetic grate:

At present, China’s permanent magnet chuck standard song grating should be made of copper. But most manufacturers use stainless steel, the other part of the southern manufacturers, in order to reduce costs, the use of plastic grate, but no matter what grate, its purpose is to isolate the magnetic.

According to the design of the magnetic route, the size of the magnetic steel and the internal size of the magnetic grating are not the same. Its function is that when the suction cup is opened, the magnetic grating moves to expose the magnetic steel below, the suction cup is in the working state, and after the suction cup is turned off, the grate moves to the top of the magnetic steel and blocks the magnetic force line. The permanent magnet sucker is made of stainless steel magnetic insulation panel

3, permanent magnet sucker panel:

The panel of the permanent magnet disk is generally divided into two kinds: wide set and intensive, and the poles divided into different parts of the corresponding size are also different:

Characteristics of permanent magnet chuck:
1) The permanent magnet chuck uses high-performance permanent magnet material NdFeb (Nd-Fe-B) as the core of the product, making the product smaller, stronger lifting force, and permanent magnetic force.

2) The permanent magnet suction cup has a safety factor of 3.5 times the maximum rated lifting gravity.

3) Permanent magnet chuck can be divided into: ordinary permanent magnet chuck, dense permanent magnet chuck, strong permanent magnet chuck, permanent magnet jack, supply four categories. Among them, the first three categories are divided into three sub-categories according to the shape and use of rectangular permanent magnet chuck, circular permanent magnet chuck, and Angle adjustable type. The permanent magnet jack is only different in size, but the shape is basically the same.

4) Permanent magnet suction cups can be used without electricity, saving the trouble of power supply.

5) The optimized magnetic circuit design of the permanent magnet chuck makes the remanence almost zero.

6) The professional design of the permanent magnet suction cup makes the product more beautiful.

Use of permanent magnet chuck:
The workpiece is placed ON the permanent magnet suction cup table surface, and then the wrench is inserted into the shaft hole and rotated clockwise 180 to “ON”, then the workpiece can be sucked for processing;