CN206083857U - Produce neodymium iron boron mould of specific magnetic declination requirement - Google Patents

Abstract

The utility model relates to a produce neodymium iron boron mould of specific magnetic declination requirement, including die and briquetting, the die cavity that has a parallelogram on the die, there is a boss on the briquetting, the boss adopts clearance fit with lower die cavity, the utility model has the advantages of it is following: it is evenly good to save raw and other materials, reduction in production cost, product magnetic property.

Description

A kind of neodymium-iron-boron die for producing specific magnetic declination requirement

Technical field：

The utility model is related to neodymium iron boron powder field shaping technique, is especially a kind of to produce specific magnetic declination requirement Neodymium-iron-boron die.

Background technology：

Sintered neodymium iron boron material has Japan assistant river true man to invent in nineteen eighty-three, opens simultaneously Japanese, Chinese, American-European within 1985 Beginning industrialization, the course for experiencing 33 years altogether till now.This 33 years neodymium iron boron industries flourish, and global yield was at 1985 69 tons, be 71.5 ten thousand tons to global yield when 2009；Application constantly expands, common in hard disk drive, nuclear-magnetism at present Shake and be widely used in imager, electric motor car, wind-power electricity generation, industrial magneto field；Shape of product traditional square piece, The product of different shapes such as sector, cylindrical shape, irregularly shaped is increased on the basis of cylinder, shoe.With the expansion of application The big increase with shape of product, has new requirement to the magnetic declination of product, and certain fields require the product of specific magnetic declination.

At present sintered NdFeB industry powder compacting operation generally suppresses square billet, circle or special-shaped product, N during product magnetizing The N poles S in magnetic field is extremely parallel when pole, S poles are suppressed with press, i.e., product magnetizing direction is parallel with blank easy magnetizing axis.Production is had The product of specific magnetic declination angle requirement has the following disadvantages：1st, need to be processed using machining process on the basis of existing blank Go out magnetic declination, the position of processing is difficult to hold with angle；2nd, it is more for processed finished products waste powder, increase production cost.

Utility model content：

The purpose of this utility model is to overcome the shortcomings of above-mentioned prior art, there is provided a kind of to produce specific magnetic declination requirement Neodymium-iron-boron die；Mainly solve Working position present in existing production to be difficult to hold with angle, waste that powder is more and production The problems such as cost.

The technical solution of the utility model is：A kind of neodymium-iron-boron die for producing specific magnetic declination requirement, including die, its It is characterized in that there is the die cavity of on described die, the section of die cavity is parallelogram；Described die is upper and lower Upper holder block and lower lock block being set respectively, there is a boss on upper holder block and lower lock block, boss coordinates with die cavity gap；Described upper pressure Block and lower lock block are fixed as one respectively with upper connecting rod and lower pull bar.

Further, the diagonal of a parallelogram intersection point in described die cavity section is located on the center line of die, parallel Quadrangle sideline is at an angle of with die sideline.

Further, described die cavity corner be round-corner transition, R≤4mm at fillet；Die cavity band pattern draft, draft angle Less than or equal to 3 °.

Compared with the prior art a kind of neodymium-iron-boron die for producing specific magnetic declination requirement described in the utility model has Following good effect, 1, easily held with angle using mould Working position of the present utility model, can significantly save powder, Jing reality Production contrast powder can save 10 ~ 20%, reduce production cost, and product magnetic property is uniformly good；2nd, simple structure, processing is used It is convenient.

Description of the drawings：

Fig. 1 is the structural representation that the utility model is implemented.

In figure：1st, upper connecting rod, 2, upper holder block, 3, die cavity, 4, die, 5, lower lock block, 6, lower pull bar.

Specific embodiment：

To describe technology contents of the present utility model, construction features, the purpose realized and effect in detail, below in conjunction with reality Apply mode and figure to describe in detail by taking 50 ° of magnetic declination as an example.

Design of Dies：By product design blank dimension, draw die cavity make product N poles S poles and magnetizing direction N poles S poles into It is 50 °, respectively different to shrinkage factor according to powder, die cavity is designed, it is square to make after parallelogram blank sintering.

Embodiment 1, referring to Fig. 1, according to design requirement upper connecting rod 1 and upper holder block 2, die 4, the and of lower lock block 5 is processed into Lower pull bar 6, upper connecting rod 1 and upper holder block 2 are processed as one, and lower lock block 5 and lower pull bar 6 are processed as one；Die 4 is an overall material Material, there is die cavity 3 on die 3, the section of die cavity 3 is a parallelogram, and the diagonal intersection point of parallelogram is located at die 4 Be a rectangle after parallelogram sintering according to NdFeB material anisotropy on center line, parallelogram sideline with it is recessed The sideline of mould 4 is at an angle of, generally 45-55 °；3 four jiaos of die cavity is round-corner transition, R≤4mm at fillet, die cavity 3 with pattern draft, Draft angle is less than or equal to 3 °；Upper holder block 2 and lower lock block 5 are corresponded with the die cavity 3 of die 4, on upper holder block 2 and lower lock block 5 There is a boss, boss coordinates with the gap of die cavity 3.

A kind of neodymium-iron-boron die for producing specific magnetic declination requirement described in the utility model, during compacting, lower lock block 5 is located at In die cavity 3, upper holder block 2 is located at the upper end of die cavity 3, and into die cavity 3 a number of powder is inserted, and then magnetizes, suppresses, compacting side Formula obtains the blank of parallelogram using compacting or two-way compacting, the demoulding of floating；Blank outward appearance is good；After sintered contraction Obtain rectangle square billet.Jing actual productions contrast can significantly save powder using the mould, and powder saves 10 ~ 20%.

Claims (3)

1. a kind of neodymium-iron-boron die for producing specific magnetic declination requirement, including die（4）, it is characterised in that described die（4） On have the die cavity of（3）, die cavity（3）Section be parallelogram；Described die（4）It is upper and lower to set upper holder block respectively（2） And lower lock block（5）, upper holder block（2）And lower lock block（5）On have a boss, boss and die cavity（3）Gap coordinates；Described upper pressure Block（2）And lower lock block（5）Respectively with upper connecting rod（1）With lower pull bar（6）It is fixed as one.

2. a kind of neodymium-iron-boron die for producing specific magnetic declination requirement according to claim 1, it is characterised in that described Die cavity（3）The diagonal of a parallelogram intersection point in section is located at die（4）Center line on, parallelogram sideline and die （4）Sideline is at an angle of.

3. a kind of neodymium-iron-boron die for producing specific magnetic declination requirement according to claim 1 and 2, it is characterised in that institute The die cavity stated（3）Corner is round-corner transition, R≤4mm at fillet；Die cavity（3）Band pattern draft, draft angle is less than or equal to 3 °.