CN201511143U - Extrusion blade - Google Patents

Abstract

The utility model relates to an extrusion blade, which is in a diamond shape. The minimum diamond angles relative to the center of the diamond shape along the length direction are symmetric and are both 35 degrees, the maximum diamond angles relative to the center of the diamond shape along the width direction are symmetric and are both 145 degrees, the middle part of the blade (1) is provided with a mounting hole used for fixing the blade, a cutting edge zone (2) of the blade are 0.15mm wide, and a secondary clearance formed by the cutting edge zone of the blade is minus 3 degree. The utility model can form the extrusion cutting edge zone during cutting, and the cutting blade has certain passivation effect. When the utility model is used for cutting the aluminum alloy casting blank at a high speed, the surface of the aluminum alloy casting blank can be rapidly extruded and deformed, thereby repairing the casting defects and making the appearance of the casting blank glossy. Moreover, the utility model can improve the quality of the surface appearance of the machined product and reduce the production cost.

Description

A kind of pressing blade

Technical field

The utility model belongs to the alloy knife technical field, relates to a kind of pressing blade in the carbide cutter tool.

Background technology

At present, the general carbide cutter tool that adopts in aluminium alloy turning processing, this alloy knife primary clearance parameter is chosen as :+7 ° or+11 °, cutting edge bandwidth are the version of 0mm, to improve the sharpness of blade.

Because the influence of aluminum alloy casting technique; casting flaws such as some coarse grains, point-like pin hole appear in product surface after the machining through regular meeting; have a strong impact on its presentation quality even some defective can cause product rejection, therefore before extruding, need improve yield rate by machining to the aluminium alloy strand.And above-mentioned carbide cutter tool can not effectively push machined surface when machining, to eliminate existing defective.

Summary of the invention

For addressing the above problem, the utility model has designed a kind of pressing blade, and this pressing blade can effectively push aluminium alloy strand machined surface when cutting, thereby eliminate casting flaws such as coarse grain, point-like pin hole by structural change.

For achieving the above object, the utility model adopts following technical scheme:

Described a kind of pressing blade shape that assumes diamond in shape, 35 ° each other of the minimum water caltrop symmetries at the relative rhombus of length direction center, 145 ° each other of the maximum water caltrop symmetries at the relative rhombus of width center, in the middle of blade, be provided with the installing hole that is used for fixing blade, the cutting edge bandwidth of blade is 0.15mm, and the cutting land front clearance of blade is-3 °.

Because adopt aforesaid technical scheme, the utility model produces following good effect:

1, the utility model is by the change of structural parameters, make to form an extruding cutting land when cutting, and make cutting edge have certain passivation effect, the aluminium alloy strand is surface extrusion rapidly by high-speed cutting the time, make casting flaw repaired, outward appearance presents brightness effect.

2, the utility model can improve machinofacture appearance quality under the prerequisite of not losing machined efficient, reduces production costs.

Description of drawings

Fig. 1 is a main cutaway view of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the I portion enlarged diagram of Fig. 1

Among the above-mentioned figure: the 1-blade; 2-cuts land.

The specific embodiment

In conjunction with Fig. 1,2 and 3, a kind of pressing blade of the present utility model shape that assumes diamond in shape, 35 ° each other of the minimum water caltrop symmetries at the relative rhombus of length direction center, 145 ° each other of the maximum water caltrop symmetries at the relative rhombus of width center, in the middle of blade 1, be provided with the installing hole that is used for fixing blade, cutting land 2 width of blade 1 are 0.15mm, and cutting land 2 front clearances of blade 1 are-3 °.

Cutting land 2 width are designed to 0.15mm has obvious difference with general carbide cutter tool cutting edge bandwidth 0mm, and the squeezing effect in the time of can increasing machined like this makes the surface extrusion rapidly by high-speed cutting time of aluminium alloy strand.

To cut land 2 front clearances and be designed to-3 °, and can make the cutting land have certain passivation, improve machinofacture appearance quality, reduce production costs.

Blade 1 is designed to diamond shaped, make it at the water caltrop of width 145 ° of symmetry each other, at the water caltrop of length direction 35 ° of symmetry each other, and the width design of cutting land 2 and front clearance design all on the length direction of blade 1 symmetry embody, promptly locate embodiment at 35 °.Blade 1 is fixed on the knife rest by installing hole, after blunt knives take place the cutting land 2 of an end, with the cutting land 2 of the other end strand that cuts aluminum alloy, has greatly improved machined efficient behind 180 ° of the reversible cutting inserts.

Claims (1)

1. pressing blade, it is characterized in that: this blade (1) shape that assumes diamond in shape, 35 ° each other of the minimum water caltrop symmetries at the relative rhombus of length direction center, 145 ° each other of the maximum water caltrop symmetries at the relative rhombus of width center, in the middle of blade (1), be provided with the installing hole that is used for fixing blade, cutting land (2) width of blade (1) is 0.15mm, and cutting land (2) front clearance of blade (1) is-3 °.

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