CN214391881U

CN214391881U - Trimming die with thimble hole forging

Info

Publication number: CN214391881U
Application number: CN202023172702.8U
Authority: CN
Inventors: 苏丽芬; 崔亚军; 夏亚东; 惠恬静
Original assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Current assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-15
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a trimming die with thimble hole forging, the trimming die comprises a trimming female die and a trimming punch; trimming female dies: the inner shape of the die is consistent with the appearance of the forge piece and is used for supporting the forge piece, and the outer edge of the trimming female die is in contact with the root of a flash bridge part of the forge piece; trimming the punch: the trimming punch is designed with a cutting edge, the trimming punch is not contacted with the forging body, and the cutting edge is contacted with the bridge part flash of the forging; a gap of 0.1-0.3 mm is reserved between the trimming punch and the outer edge of the female die, and the included angle between the plane where the cutting edge is located and the inner side wall of the trimming punch body is 30-45 degrees; a gap of 5-10 mm is reserved between the inner part of the trimming punch cavity and the highest point of the forging piece; through the design of the new trimming die, the problems of deformation and crush damage of the forged piece with the section height ratio of more than 3 and the thimble hole during trimming are solved, the number of fire for correcting the deformed forged piece is reduced, and the phenomenon of crush damage of the trimmed edge of the forged piece is avoided.

Description

Trimming die with thimble hole forging

Technical Field

The utility model belongs to the technical field of tooling die, a side cut mould with thimble hole forging is related to, be applicable to the side cut production that the cross-sectional height is bigger and have round axle thimble hole forging.

Background

Conventional trimming die: the trimming female die supports the flashes to fix the forge piece, the inner cavity of the trimming punch is manufactured according to the shape of the forge piece, and pressure is applied to the forge piece after the trimming female die is overlapped with the forge piece body, so that the forge piece body is separated from the flashes; when the forging piece is used for a forging piece with a circular shaft thimble hole with a cross section height ratio, the circumferential surface of the forging piece thimble hole is easily crushed and deformed when the diameter of the thimble hole is less than 10mm, and the whole forging piece is deformed and warped. Therefore, one set of reasonable trimming die not only can reduce the defects of deformation, crush damage and the like of the forged piece, but also greatly reduces the correcting times of the forged piece and improves the surface quality of the forged piece.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a side cut mould with thimble hole forging to solve the forging that has the round axle thimble hole when adopting conventional side cut mould to cut edge and meet the forging thimble hole periphery that is crushed and damaged the deformation, the whole warp scheduling problem that appears of forging.

For solving the technical problem, the technical proposal of the utility model is that:

the trimming die with the thimble hole forging is characterized in that the diameter of the thimble hole is smaller than 10 mm; the trimming die comprises a trimming female die and a trimming punch;

trimming female dies: the inner shape of the die is consistent with the appearance of the forge piece, the die is used for supporting the forge piece, the periphery of the die is fixed with the die holder through bolts, and the outer edge of the trimming female die is in contact with the root of a flash bridge part of the forge piece.

Trimming the punch: the design blade of side cut drift, side cut drift and forging body contactless, blade and forging bridge portion overlap and contact.

And a gap of 0.1-0.3 mm is reserved between the trimming punch and the outer edge of the female die, and the included angle between the plane where the cutting edge is located and the inner side wall of the trimming punch body is 30-45 degrees.

And a gap of 5-10 mm is reserved between the inner part of the trimming punch cavity and the highest point of the forging.

And an ejection device is arranged at the bottom of the trimming female die.

Preferably, the trimming die material is 5 CrNiMo.

Preferably, the trimming punch material is 3Cr2W 8V.

Preferably, the ejection device is a push rod.

The utility model has the advantages that: through the design of the new trimming die, the required surface quality of the die forging after trimming is achieved, and the phenomenon of deformation of the trimming of the forging is avoided, so that the number of times of correction is reduced, and the production efficiency of the forging is improved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the examples of the present invention will be briefly explained below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic illustration of a forging;

FIG. 2 is a schematic view of a trimming punch;

FIG. 3 is a schematic view of a trimming die;

the forging die comprises a forging 1, a bridge 2, a bridge root, a trimming punch 3, a trimming female die 4, a trimming cutting edge 5, an ejector rod 6, a flash 7 and an easily deformed and crushed part 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Features of various aspects of embodiments of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples thereof. The present invention is not limited to any particular arrangement and method provided below, but covers any modification, replacement, etc. of all product structures, methods covered without departing from the spirit of the invention.

In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.

A trimming die for a forge piece with a relatively large cross section height and a thimble hole is manufactured by a trimming female die according to a die parting surface and an outer contour and used for supporting the forge piece, a trimming punch is used for manufacturing a cutting edge, and the cutting edge is connected with the outer edge of the female die at a certain angle by leaving a 0.2mm gap.

The design of the mould comprises the following steps:

step 1: as shown in fig. 1, a trimming female die 4 is designed according to the shape characteristics of the forging (the section ratio of the forging is more than 3, and the diameter of a thimble hole is less than 10mm), the trimming female die is manufactured according to one outer contour of a parting surface and is used for supporting the forging, the periphery of the trimming female die is fixed with a die holder by bolts, and the outer edge of the trimming female die is contacted with the root 2 of a flash bridge part of the forging; step 2: designing a trimming punch 3 according to the outer edge of a trimming female die of the forge piece, wherein a gap of 0.2mm is reserved between a cutting edge 5 and the outer edge of the female die, the trimming cutting edge 5 is connected with a trimming punch body at an angle of 30 degrees, and a gap of 5mm is reserved between the inner part of a die cavity of the trimming punch and the highest point of the forge piece; and step 3: an ejection ejector rod 6 is arranged at the bottom of the trimming female die; and 4, step 4: aligning the center of the trimming female die and the center of the trimming punch; and 5: and placing the formed forging piece in the trimming female die, and moving the trimming punch downwards to remove burrs.

In the step 1, the appearance of the forging is the forging with the section height ratio more than 3 and the size of the circular shaft top pinhole less than 10 mm; in the step 1, the inner contour of the trimming female die cavity is manufactured according to the outer contour of one fan of the forged piece; in the step 2, a trimming punch is designed according to the outer edge of the trimming female die, a 0.2mm gap is reserved between the trimming cutting edge and the outer edge of the trimming female die, the trimming cutting edge is connected with the trimming punch body at an angle of 30 degrees, a 5mm gap is reserved between the inside of a die cavity of the trimming punch and the highest point of a forge piece, the forge piece is made of 15-5PH materials, and the trimming female die is made of: 5CrNiMo, what the side cut drift adopted is: 3Cr2W 8V.

Adopt the utility model discloses a good non-damage phenomenon of forging surface quality after the overlap is amputated to the mould, and the forging is undeformed, need not rectify again.

The utility model discloses a side cut bed die supports forging, and overlap is got rid of to side cut drift preparation blade, has improved the shape stability of forging to the at utmost.

The utility model discloses a mould use steps as follows:

step 1: and designing a trimming female die and a trimming punch according to the shape and the size of the die forging.

Step 2: and assembling the trimming die on the die holder.

And step 3: and placing the hot forging piece on the trimming female die.

And 4, step 4: and the trimming punch moves downwards to remove flash.

And 5: and ejecting the forged piece by the ejection device.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a side cut mould with thimble hole forging which characterized in that: the diameter of the thimble hole is less than 10 mm; the trimming die comprises a trimming female die and a trimming punch;

trimming female dies: the inner shape of the die is consistent with the appearance of the forge piece and is used for supporting the forge piece, and the outer edge of the trimming female die is in contact with the root of a flash bridge part of the forge piece;

2. The mold of claim 1, wherein: and a gap of 0.1-0.3 mm is reserved between the trimming punch and the outer edge of the female die, and the included angle between the plane where the cutting edge is located and the inner side wall of the trimming punch body is 30-45 degrees.

3. The mold of claim 1, wherein: and a gap of 5-10 mm is reserved between the inner part of the trimming punch cavity and the highest point of the forging.

4. The mold of claim 1, wherein: and the bottom of the trimming female die is also provided with an ejection device.

5. The mold of claim 1, wherein: the material of the trimming female die is 5 CrNiMo.

6. The mold of claim 1, wherein: the material of the trimming punch is 3Cr2W 8V.

7. The mold of claim 4, wherein: the ejection device is an ejector rod.

8. The mold of claim 1, wherein: bolt holes for fixing the trimming female die with the equipment die holder are formed in the periphery of the trimming female die.