CN217512857U - Punch of powder metallurgy thin-wall forming die and die thereof - Google Patents

Punch of powder metallurgy thin-wall forming die and die thereof Download PDF

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Publication number
CN217512857U
CN217512857U CN202221162745.4U CN202221162745U CN217512857U CN 217512857 U CN217512857 U CN 217512857U CN 202221162745 U CN202221162745 U CN 202221162745U CN 217512857 U CN217512857 U CN 217512857U
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punch
wall forming
thin wall
core rod
powder metallurgy
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CN202221162745.4U
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谢志欢
刘奇文
黄辉
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Infore Material-Tech Corp
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Infore Material-Tech Corp
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Abstract

The utility model discloses a powder metallurgy thin wall forming die punch and a die thereof, which comprises a punch body and a core rod, wherein the punch body is provided with a space avoiding area and a punching area, and the space avoiding area comprises a space avoiding groove which is arranged on the punch body and is arranged along the length direction of the punch body; the core rod is arranged on the stamping area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval. The utility model discloses a mode setting the plug with integrated into one piece is on the punching press district, and let the plug with keep away the dead slot adjacent in order to be formed with thin wall shaping interval, realized from this that work piece bulge and depressed part homoenergetic are formed at a punching press in-process, thereby make thin wall between work piece bulge and the depressed part equally can form at a punching press in-process, change from this and need separately twice punching presses and cause the easy problem that ftractures of thin wall and then lead to the processingquality low when for the convenience of drawing of patterns in the past, therefore effectively improve the qualification rate of product.

Description

Punch of powder metallurgy thin-wall forming die and die thereof
Technical Field
The utility model relates to a powder metallurgy technical field especially relates to a powder metallurgy thin wall forming die drift and mould thereof.
Background
This section merely provides background information related to the present application so as to enable those skilled in the art to more fully and accurately understand the present application, which is not necessarily prior art.
Powder metallurgy is a process technique for manufacturing metal materials, composite materials and various types of products by using metal powder (or a mixture of metal powder and nonmetal powder) as a raw material and performing forming and sintering.
The powder metallurgy method has similar places with the production of ceramics and belongs to the powder sintering technology, therefore, a series of new powder metallurgy technologies can also be used for preparing ceramic materials. Due to the advantages of powder metallurgy technology, it has become a key to solve the problem of new materials, playing a very important role in the development of new materials.
The existing powder workpiece is generally formed by punching through a die, scattered powder is punched into a whole by using pressure, and all concave parts or convex parts of the powder workpiece are completed by separate punching procedures in the machining process, namely, each punching procedure is completed by using a punch. However, as shown in fig. 2, when a workpiece with a thin wall in the drawing needs to be produced, the thin wall is extremely easy to crack in the existing punching process and the die punch, so that the problem that the processing quality is low and the qualified rate is not up to the standard is caused.
Therefore, the existing powder thin-wall workpiece has defects in processing and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a powder metallurgy thin wall forming die drift and mould thereof effectively improves the qualification rate of product.
The utility model discloses a following technical scheme realizes: the utility model provides a powder metallurgy thin wall forming die drift, includes drift body and plug, wherein:
the punch head body is provided with a blank avoiding area and a punching area, and the blank avoiding area comprises a blank avoiding groove which is arranged on the punch head body and is formed along the length direction of the punch head body;
the core rod is arranged on the stamping area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval.
Therefore, the core rod is arranged on the stamping area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval, so that the convex part and the concave part of the workpiece can be formed in one stamping process, the thin wall between the convex part and the concave part of the workpiece can be formed in one stamping process, the problem that the thin wall is easy to crack and the machining quality is low due to the fact that two stamping processes need to be separated for demolding in the prior art is solved, and the product yield is effectively improved.
In one embodiment, the thin-wall forming pitch has a thickness of between 1mm and 5 mm. The inventor verifies through multiple tests that when the thickness of the thin wall is more than 5mm, the thin wall is relatively not easy to crack when the two punching times are separated, but when the thickness of the thin wall is less than 5mm, the cracking rate is very high, and therefore a more proper thin wall forming interval is determined. Furthermore, the thickness of the thin-wall forming interval is between 2mm and 4 mm.
In one embodiment, the mandrel is welded or integrally cast onto the stamping zone.
In one embodiment, the punch body is in a strip shape, the core rod is arranged on the center of the punch body, and the clearance groove is arranged on the side wall of the punch body. The purpose of this is to better shape the workpiece by moving the powder sideways when the core rod is in contact with the powder.
In one embodiment, the clearance grooves are provided in two groups and are arranged symmetrically to the core rod. Of course, the empty avoiding grooves may have three or four groups and the like, and the number of the empty avoiding grooves should not be limited.
In one embodiment, the punch body and the mandrel are one of metals cr12, cr12mov, or asp 23.
The utility model discloses still have a mould, including the cope match-plate pattern and with the lower bolster of cope match-plate pattern punching press fit, the cope match-plate pattern and/or be provided with on the lower bolster like foretell powder metallurgy thin wall forming die drift.
The upper die plate and/or the lower die plate are/is provided with the powder metallurgy thin-wall forming die punch, so that the core rod in the punch is arranged on the punching area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval, so that the convex part and the concave part of the workpiece can be formed in one punching process, the thin wall between the convex part and the concave part of the workpiece can be formed in one punching process, the problem that the thin wall is easy to crack and the machining quality is low due to the fact that two times of punching are needed to be separated in the conventional demolding process is solved, and the product yield is effectively improved.
Compared with the prior art, the utility model discloses following beneficial effect has: the core rod is arranged on the stamping area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval, so that the protruding part and the recessed part of the workpiece can be formed in one stamping process, the thin wall between the protruding part and the recessed part of the workpiece can be formed in one stamping process, the problem that the thin wall is easy to crack and the machining quality is low due to the fact that two stamping processes need to be separated in the prior art for demolding is solved, and the qualification rate of products is effectively improved.
Drawings
Fig. 1 is a schematic perspective view of a local structure of the punch of the powder metallurgy thin-wall forming die of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the workpiece prepared by punching the punch of the powder metallurgy thin-wall forming die of the present invention.
The reference symbols in the figures represent the following meanings: 1. a punch body; 11. an empty avoiding groove; 2. a core rod; 3. forming interval of thin wall; 4. thin wall.
Detailed Description
To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application.
In the following description, different "one embodiment" or "another embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
It should be further noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are used in the orientation or positional relationship indicated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, the utility model discloses a powder metallurgy thin wall forming die drift for install and carry out blanking punching press breaking operation in succession on stamping die, make and be processed powder material and take place plastic deformation, thereby obtain required powder finished product or semi-manufactured goods.
The punch comprises a punch body 1 and a core rod 2, wherein a blank avoiding area and a punching area are arranged on the punch body 1, the blank avoiding area comprises a blank avoiding groove 11 which is arranged on the punch body 1 and is formed along the length direction of the punch body 1, and the blank avoiding groove 11 is used for enabling powder to move into the blank avoiding groove 11 when the punch body 1 extrudes the powder, so that a protruding part of a workpiece is formed; further, the core rod 2 is provided on the punching zone in an integrally formed manner, and the core rod 2 is adjacent to the clearance groove 11 to form the thin-wall forming gap 3, and the core rod 2 is used for pressing the powder to move the powder to the periphery, thereby forming the concave portion of the workpiece.
The utility model discloses a mode setting with integrated into one piece to plug 2 is on the punching press district, and let plug 2 with keep away empty groove 11 adjacent in order to be formed with thin wall shaping interval 3, realized from this that work piece bulge and depressed part homoenergetic are formed at a punching press in-process, thereby make the thin wall between work piece bulge and the depressed part equally can form at a punching press in-process, change from this and need part two punching presses separately and cause the easy fracture of thin wall and then lead to the problem that processingquality is low when in order to facilitate the drawing of patterns in the past, therefore effectively improve the qualification rate of product.
In which, as shown in figure 2, a thin wall 4 of the workpiece is shown.
The thickness of the thin-wall forming space 3 is 1mm-5mm, and the inventor verifies through multiple tests that when the thickness of the thin wall is larger than 5mm, the thin wall is relatively not easy to crack when the thin wall is punched for two times, but when the thickness of the thin wall is smaller than 5mm, the cracking rate is very high, and therefore the more appropriate thin-wall forming space 3 is determined. Further, the thickness of the thin-wall forming space 3 is between 2mm and 4 mm.
The core rod 2 can be fixed on the punch body 1 in a threaded manner, so that the core rods 2 in different shapes can be conveniently replaced, but when the threaded manner is adopted, the threaded portion may cause the workpiece to be not smooth enough, and the quality of the workpiece is affected. Thus, the mandrel bar 2 is provided on the ram by integral molding, specifically, the mandrel bar 2 may be provided on the ram by welding or integral casting, and preferably, the mandrel bar 2 is provided on the ram by integral casting.
Wherein, drift body 1 is the bar form, and plug 2 sets up on the central point of drift body 1 puts and keep away the dead slot 11 and set up on the lateral wall of drift body 1. The purpose of this is to better shape the workpiece by moving the powder sideways when the mandrel 2 is in contact with the powder. Further, the clearance grooves 11 are provided in two sets and are arranged symmetrically to the mandrel bar 2. Of course, the number of the clearance grooves 11 may be three or four, and should not be limited by the number.
The punch body 1 and the core rod 2 are made of one of metal cr12 (alloy tool steel), cr12mov (cold-work die steel) or asp23 (chromium molybdenum vanadium powder steel).
Wherein, the in-picture is not shown, the utility model discloses still have a mould, including the cope match-plate pattern and with the cope match-plate pattern down mould of punching press fit, be provided with on cope match-plate pattern and/or the lower bolster like foretell powder metallurgy thin wall forming die drift. Namely, the upper die plate and/or the lower die plate are/is provided with the powder metallurgy thin-wall forming die punch, so that the core rod 2 in the punch is arranged on the punching area in an integrated forming mode, and the core rod 2 is adjacent to the clearance groove 11 to form the thin-wall forming space 3, so that the convex part and the concave part of the workpiece can be formed in one punching process, the thin wall between the convex part and the concave part of the workpiece can be formed in one punching process, the problem that the thin wall is easy to crack and the processing quality is low due to the fact that two times of punching are needed for demoulding in the prior art is solved, and the qualification rate of products is effectively improved.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (7)

1. The utility model provides a powder metallurgy thin wall forming die drift, its characterized in that includes drift body and plug, wherein:
the punch head body is provided with a blank avoiding area and a punching area, and the blank avoiding area comprises a blank avoiding groove which is arranged on the punch head body and is formed along the length direction of the punch head body;
the core rod is arranged on the stamping area in an integrated forming mode, and the core rod is adjacent to the clearance groove to form a thin-wall forming interval.
2. The powder metallurgy thin wall forming die punch of claim 1, wherein the thin wall forming pitch is between 1mm and 5mm thick.
3. The powder metallurgy thin wall forming die punch of claim 1, wherein the core rod is disposed on the punching zone by welding or integral casting.
4. The punch of the powder metallurgy thin wall forming die according to claim 1, wherein the punch body is in a strip shape, the core rod is disposed at a central position of the punch body, and the clearance groove is disposed on a side wall of the punch body.
5. The powder metallurgy thin wall forming die punch of claim 4, wherein the clearance grooves have two groups and are arranged symmetrically to the core rod.
6. The powder metallurgy thin wall forming die punch of claim 1, wherein the punch body and the core rod are one of metals cr12, cr12mov, or asp 23.
7. A die, which is characterized by comprising an upper die plate and a lower die plate which is in punching fit with the upper die plate, wherein the punch of the powder metallurgy thin-wall forming die is arranged on the upper die plate and/or the lower die plate, and the punch of the powder metallurgy thin-wall forming die is/are as claimed in any one of claims 1 to 6.
CN202221162745.4U 2022-05-13 2022-05-13 Punch of powder metallurgy thin-wall forming die and die thereof Active CN217512857U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221162745.4U CN217512857U (en) 2022-05-13 2022-05-13 Punch of powder metallurgy thin-wall forming die and die thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221162745.4U CN217512857U (en) 2022-05-13 2022-05-13 Punch of powder metallurgy thin-wall forming die and die thereof

Publications (1)

Publication Number Publication Date
CN217512857U true CN217512857U (en) 2022-09-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221162745.4U Active CN217512857U (en) 2022-05-13 2022-05-13 Punch of powder metallurgy thin-wall forming die and die thereof

Country Status (1)

Country Link
CN (1) CN217512857U (en)

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