Stamp for hot die forging

 

(57) Abstract:

The invention relates to the processing of metals by pressure and can be used in the manufacture of disk drives automotive wheels. The technical result of the claimed invention is the elimination of distortions stamping due to the impossibility of shifting sections of the matrix during deformation. Stamp for hot die forging contains the power holder, the punch, the ejector with a stove. In the power clip posted by the matrix in contact with the ejector on the inclined plane, the angle of 25-35. Closed up the ejector plate and the matrix are connected using interlocking connection. Each of the four sections of the matrix is arranged to move inside the power holder in the direction perpendicular to the plane of the contact plate of the ejector. 6 Il.

The invention relates to the processing of metals by pressure, namely, to designs of dies for hot forming processes, mainly products drive type automobile wheels.

Famous stamp for massive forming, containing power clip, punch, placed in the tip seat holder detachable matrix section to the J 13/02, published in 1977).

In the specified stamp ejection of the finished product occurs together with the disclosure sections of the matrix by simultaneous translational and rotational move them around the axis of the hinges.

However, a significant disadvantage of this stamp is the impossibility of pushing products drive type automobile wheels because of their possible jamming in the punch.

The closest to the technical nature of the present device is a stamp for forming processes containing power clip, punch, placed in the tip seat holder detachable matrix and the ejector with the plate in contact with the matrix, and it is equipped with rods to move the sections of the matrix perpendicular to the longitudinal axis of the punch and the ejector plate is placed with the surface coverage sections of the matrix in close their position and without freedom of movement when filled engraving and extracted the punch (see RF patent N 2057613, B 21 J 13/02, published in 1996).

However, a significant disadvantage of this stamp is that as you scale up the efforts of the deformation due to the resulting horizontal component of the possible connector m the PA is only possible on the vertical hydraulic presses, equipped with side hydraulic cylinders to move the sections of the matrices in the horizontal direction.

The technical result obtained by carrying out the present invention is the removal of distortions stamping due to the impossibility of shifting sections of the matrix in any direction in the deformation process, and consequently obtaining stamping with minimal machining tolerances of the final product.

The technical result is achieved by the fact that the stamp for hot die forging products drive type automotive wheels containing power clip, punch, placed in a power cage split the matrix, the ejector with the plate in contact with the matrix on an inclined plane, closed up the ejector plate and the matrix are connected using interlocking connection, the angle of the plane of contact of the ejector plate and the plates to the horizontal plane of the 25-35oand each of the four sections of the matrix is arranged to move inside the power holder in the direction perpendicular to the plane of the contact plate of the ejector and the matrix.

Casestudy ejector and matrix closed up using interlocking connection;

- select the value of the angle of inclination of the plane of contact of the ejector plate and the plates to the horizontal plane within 25-35o;

- each of the four sections of the matrix can travel inside the power holder in the direction perpendicular to the plane of the contact plate of the ejector and the matrix.

Thus, the claimed technical solution meets the eligibility criterion of "novelty."

The connection of the ejector plate and the plates closed up using a scarf joint excludes travel sections of the matrix during deformation due to high specific load working on the engraving plate ejector. Force per square engraving plate ejector, much more efforts aimed at lifting sections of the matrix.

Performing a tilt angle of the plane of the contact plate ejector and matrices 25 - 35ois the most optimal.

At an angle of inclination less than the 25othe conditions of increasing effort, acting on the guide of the power holder, rigidly fixed to the latter, which may cause damage to the stamp.

At an inclination of more than 35s each of the four sections of the matrix can travel inside the power cage in the direction perpendicular to the plane of the contact plate of the ejector and the matrix, provides free disclosure sections of the matrix after the deformation, which also helps to prevent the distortion of the geometry of the stamping.

Therefore, based on the above, we can conclude that due to the action of essential features that distinguish the claimed technical solution to the prototype, is achieved technical result of the invention.

Famous stamps for stamping products with separable matrices. However, the disclosure sections of the matrices is done by using additional devices (for example, rods, see ed. St. USSR N 349460).

Additional analysis of the sources of patent and scientific literature did not reveal technical solutions containing the features distinguishing the claimed technical solution to the prototype. Therefore, the claimed technical solution meets the eligibility criterion of "significant differences".

The invention is illustrated by drawings. In Fig.1 shows a General view of the stamp, axial section, Fig. 2 - stamp before deformation, Fig. 3 stamp at the end of the deformation, Fig. 4 - MW-b of Fig. 2.

Stamp for hot die forging products drive type automotive wheel consists of the power casing 1, within which are four sections of the split matrix 2. The stamp is provided with a piston 3 which are rigidly connected with the plate 4 of the ejector, which made working engraving. Plate 4 ejector is in contact with the matrix on the inclined plane 5, the angle of slope to the horizontal plane of the 25-35o. Closed up the ejector plate and the matrix form between a locking connection 6. Each section of the matrix is provided with T-shaped groove 7, in which is placed the T-shaped guide 8, is rigidly fixed in a power cage at an angle perpendicular to the plane of the contact matrix and the ejector plate.

The stamp is provided with a plug 9. Positions 10 and 11 are designated, respectively, after forming the preliminary and final deformation.

Stamp works as follows.

Stamping 10 obtained after pre-deformation, heated and placed in a stamp for the final deformation. Section matrix 2 are closed up. Using a punch 9 produce the deformation. Blagovne, without distortion, the design of the geometry of the stamping.

Next, the punch 9 is returned to its original position. The ejector 3 plate 4 upwards. Thus due to the contact plate of the ejector and the matrix section last begin to slide along the guides 8, forming a free space to remove the stamping 11.

After removal of the stamping 11, the deformation process is repeated again.

Technical appraisal and economic benefits of the proposed solution in comparison with the prototype is subject to receipt of forgings with minimum allowance for final machining.

Stamp for hot die forging products drive type automotive wheels containing power clip, punch, placed in a power cage split the matrix, the ejector with the plate in contact with the matrix on an inclined plane, characterized in that closed up the ejector plate and the matrix are connected using interlocking connection, the angle of the plane of contact of the ejector plate and the plates to the horizontal plane is 25 - 35oand each of the four sections of the matrix is arranged to move inside the silo is

 

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