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Method for machining round hole of sintered samarium cobalt magnet

A samarium cobalt magnet and processing method technology, applied in metal processing equipment, manufacturing tools, bonded grinding wheels, etc., can solve the problems of high cost, waste of materials, low efficiency, etc., and achieve small loss of scraps, good appearance, separation good effect

Pending Publication Date: 2019-05-10
CHENGDU GALAXY MAGNETAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the disadvantages of high cost, low efficiency, and serious material waste in the existing technology of electric discharge drilling + wire cutting processing, and provide a method for processing circular holes in sintered samarium cobalt magnets

Method used

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  • Method for machining round hole of sintered samarium cobalt magnet
  • Method for machining round hole of sintered samarium cobalt magnet
  • Method for machining round hole of sintered samarium cobalt magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Sintered Samarium Cobalt Magnets Circular Hole Machining ( through hole)

[0051] Will The samarium-cobalt magnet blank is clamped and fixed with a fixture, and the circular cutting tool is cut and drilled at a speed of 400rpm, such as figure 1 The circular cutting tool 2 shown cuts progressively deeper into the blank 1 (magnet), the mandrel 3 remaining inside the circular cutting tool 2 . When the drilling depth reaches about 16mm, stop and withdraw the drill bit. Then, turn the product around, process the other end, control the processing drilling and the previous drilling on the same axis, continue circular cutting and drilling until the inner hole is cut and formed, take out the mandrel, and withdraw the circular cutting tool. Such as figure 2 As shown, the cutting tool is replaced with a grinding tool 4, and the inner hole of the product 1 (magnet) is ground and finished to obtain Through hole samarium cobalt magnets.

[0052] (1) The shape of the obt...

Embodiment 2

[0060] Sintered Samarium Cobalt Magnet Round Hole Machining ( through hole)

[0061] Will The samarium-cobalt magnet blank is clamped and fixed by a fixture, and the circular cutting and drilling tool and the samarium-cobalt magnet blank are used for relative movement, and the relative speed is 400rpm, so that the samarium-cobalt magnet blank is subjected to circular cutting processing, and the cutting process reaches a product thickness of 1 / Stop at 2, and withdraw the circular cutting tool. Rotate the samarium cobalt magnet blank by 180° and fix it again, continue the same circular cutting process from the back of the blank until it penetrates, take out the mandrel, and withdraw the circular cutting tool. Grinding tools are used instead, and the inner hole of the samarium cobalt magnet blank is ground and finished to obtain a samarium cobalt magnet with a circular through hole.

[0062] The resulting semi-finished product has high dimensional accuracy of the inner ...

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Abstract

The invention discloses a method for machining a round hole of a sintered samarium cobalt magnet. The method comprises the following steps that (1) a samarium cobalt magnet blank is clamped and fixed,a circular cutting tool and the samarium cobalt magnet blank do relative rotation motion, then the circular cutting tool is close in the axis direction of rotation motion and carries out cutting, circular cutting machining is achieved, operation is stopped when the cutting machining depth reaches 2 / 5-3 / 5 of the thickness of the samarium cobalt magnet blank, and the circular cutting tool and the samarium cobalt magnet blank are separated; (2) the samarium cobalt magnet blank rotates by 180 degrees, the other end of the blank carries out same circular cutting machining along the rotation motionaxis the same as that in the first step till the blank is through, the samarium cobalt magnet blank and the cutting tool are separated, and a core rod in the circular cutting tool is taken out; and (3) a grinding tool is adopted, the inner hole of the samarium cobalt magnet blank is subjected to grinding finish machining, and the samarium cobalt magnet with the round through hole is obtained. Themachining method is high in machining speed, low in cost and high in efficiency and precision, and the core rod can be recycled.

Description

technical field [0001] The invention relates to a magnet processing technology, in particular to a method for processing a circular hole of a samarium-cobalt magnet, which belongs to the technical field of magnetic materials. Background technique [0002] Samarium Cobalt magnets include SmCo 5 、Sm 2 co 17 Special rare earth magnets are widely used in aviation, aerospace, military electronics, automobiles, sensors, petrochemical, magnetic transmission and other fields. SmCo magnets have high magnetic energy product, high coercive force, high remanence, and extremely low temperature coefficient ( -0.030% / ℃), high service temperature (maximum service temperature is 550℃) and other outstanding features. Due to its excellent properties, samarium cobalt magnets are often used in special environments and harsh environments. In these use cases, higher processing precision of samarium cobalt magnets is usually required. [0003] At the same time, SmCo magnets also have high hardn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B27/06B24D5/12
Inventor 冯进王晓松包小涛朱玲旭
Owner CHENGDU GALAXY MAGNETAB