Grinding head used for accurate grinding of deflection magnetic core

Abstract

A grinding head used for accurate grinding of deflection magnetic core is characterized by comprising a grinding head body. A conical accurate grinding surface with the shape and size matching with the inner conical surface of the deflection magnetic core is arranged at the front end part of the grinding head body; carborundum is coated on the conical accurate grinding surface; a clamping head is arranged in the middle of the grinding head body; the axis part of the grinding head body is a cavity used for inletting and discharging water; a plurality of chip grooves is formed in the conical accurate grinding surface; and chip removal holes communicated with the cavity are formed in the chip grooves. As the grinding head is adopted to accurately grind the deflection magnetic core, defective percentage of products is reduced, production cost is lowered, accuracy of the surfaces of the products is improved, and steadier magnetism of the products is achieved.

Description

technical field [0001] The invention relates to a grinding tool, in particular to a grinding head for finely grinding a deflection magnetic core. Background technique [0002] In the prior art, such as Figure 1 to Figure 3 As shown, the deflection magnetic core product with a tapered sleeve structure is made by powder metallurgy technology. It is first pressed into a prototype in a mold, and then sintered. After sintering, the product has a shrinkage rate of about 1.2%. A pair of separation grooves 11 in the X-axis direction (the separation ribs on the mold correspond to the separation grooves 11 and are separated into two monomers for use) become the weak point of the entire revolving body, and the shrinkage rate of the weak point area in the X-axis direction is stronger than that in the Y-axis direction , resulting in a slight deformation of the rotating body, becoming an ellipse, and the Y direction is 50-56 wires larger than the X direction. During the sintering proces...

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Problems solved by technology

[0002] In the prior art, such as Figure 1 to Figure 3 As shown, the deflection magnetic core product with a tapered sleeve structure is made by powder metallurgy technology. It is first pressed into a prototype in a mold, and then sintered. After sintering, the product has a shrinkage rate of about 1.2%. A pair of separation grooves 11 in the X-axis direction (the separation ribs on the mold correspond to the separation grooves 11 and are separated into two monomers for use) become the weak point of the entire revolving body, and the shrinkage rate of the weak point area in the X-axis direction is stronger than that in the Y-axis direction , resulting in a slight deformation of the rotating body, becoming an ellipse, and the Y direction is 50-56 wires larger than the X direction

During the sintering process, thousands of products are sintered in a kiln at the same time. The temperature and heating time of different positions in the kiln are inconsistent. When the product is formed, the degree of dimensional deformation is different. This situation leads to the conventional Process production has a 20-30% defective rate

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