Powder metallurgy product forming die

Abstract

The utility model discloses a powder metallurgy product forming die which is characterized in that an axial upper cavity and a lower cavity are formed in a forming female die, a step is formed at the bottom of the axial upper cavity, and the upper cavity and the lower cavity are separated by the step; a through axial first through hole is formed in the forming female die, and the axial first through hole passes through the step; the forming upper punch is provided with an upper insertion part capable of being inserted into the upper cavity of the forming female die, and an arc-shaped groove is formed in the end of the upper insertion part in the radial direction; the forming upper punch forms an axial second through hole corresponding to the axial first through hole, and the axial second through hole penetrates through the upper insertion part; the forming lower punch insert is provided with a lower insertion part capable of being inserted into a lower cavity of the forming female die, an axial third through hole corresponding to the axial first through hole is formed in the forming lower punch, and the axial third through hole penetrates through the forming lower punch; the forming core rod can be sequentially inserted into the third axial through hole, the first axial through hole and the second axial through hole. According to the utility model, the processing procedures of powder metallurgy products can be reduced, the production efficiency is improved, and the hole size precision can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of moulds, in particular to a powder metallurgy product forming mould. Background Art

[0002] As Figure 1 shown, in the related art, the powder metallurgy product is integrally cylindrical, and a U-shaped groove is radially pressed on the outer side wall of the powder metallurgy product.

[0003] In the prior art, when pressing the powder metallurgy product, the powder metallurgy product is formed in the inner cavity of the forming middle die, in cooperation with the forming upper punch and the forming lower punch. As Figure 2 shown, after the powder metallurgy product is press-formed, a center hole needs to be machined at the bottom of the U-shaped groove of the powder metallurgy product in the subsequent process, which makes the processing procedure cumbersome and difficult to control the hole position accuracy. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the above technologies to some extent. For this purpose, an object of the utility model is to provide a powder metallurgy product forming mould, so as to reduce the processing procedures of the powder metallurgy product, improve the production efficiency, and ensure the hole position dimension accuracy.

[0005] To achieve the above object, an embodiment of the utility model provides a powder metallurgy product forming mould, including:

[0006] A forming female die, the forming female die forms an upper cavity and a lower cavity in the axial direction, a step matching the shape of the U-shaped groove of the powder metallurgy product is formed at the bottom of the upper cavity in the axial direction, and the step separates the upper cavity and the lower cavity; the forming female die forms a through axial first through hole, and the axial first through hole passes through the step;

[0007] A forming upper punch, the forming upper punch has an upper insertion part capable of inserting into the upper cavity of the forming female die, and an arc-shaped groove is formed along the radial direction at the end of the upper insertion part; the forming upper punch forms an axial second through hole corresponding to the axial first through hole, and the axial second through hole passes through the upper insertion part;

[0008] A forming lower punch, the forming lower punch has a lower insertion part capable of inserting into the lower cavity of the forming female die, the forming lower punch forms an axial third through hole corresponding to the axial first through hole, and the axial third through hole penetrates through the forming lower punch;

[0009] A forming core rod, the forming core rod can be sequentially inserted into the axial third through hole, the axial first through hole and the axial second through hole.

[0010] A powder metallurgy product forming die according to an embodiment of the present utility model. Since the forming female die forms an upper cavity and a lower cavity in the axial direction, a step matching the U-shaped groove shape of the powder metallurgy product is formed at the bottom of the upper cavity in the axial direction; the forming upper punch has an upper insertion portion that can be inserted into the upper cavity of the forming female die, and an arc-shaped groove is formed along the radial direction at the end of the upper insertion portion; the forming lower punch has a lower insertion portion that can be inserted into the lower cavity of the forming female die; the forming core rod can be sequentially inserted into the axial third through hole, the axial first through hole, and the axial second through hole; so that the central hole at the bottom of the U-shaped groove of the powder metallurgy product can be directly formed by the cooperation of the forming upper punch, the forming female die, the forming lower punch, and the forming core rod, thereby reducing the processing procedures of the powder metallurgy product, improving production efficiency, and ensuring the hole position dimension accuracy.

[0011] In addition, a powder metallurgy product forming die according to the above embodiment of the present utility model may further have the following additional technical features:

[0012] Optionally, the forming female die is fixed on the female die fixing plate; the forming upper punch is installed on the forming upper punch fixing plate, the forming upper punch fixing plate is slidably sleeved on the die frame guiding column, and the die frame guiding column is fixed on the female die fixing plate; the forming lower punch is installed on the forming lower punch fixing plate, the forming lower punch fixing plate is slidably sleeved on the die frame guiding column; the forming core rod is fixed on the floating core rod cylinder.

[0013] Optionally, the lower insertion portion of the forming lower punch includes a first insertion post and a second insertion post arranged oppositely; the lower cavity of the forming female die is correspondingly arranged as a first lower cavity for inserting the first insertion post and a second lower cavity for inserting the second insertion post. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a prior art powder metallurgy product;

[0015] Figure 2 It is a schematic structural diagram of another prior art powder metallurgy product;

[0016] Figure 3 It is a three-dimensional exploded view of an embodiment of the present utility model;

[0017] Figure 4 It is a three-dimensional exploded view from another angle of an embodiment of the present utility model;

[0018] Figure 5 It is a side view of an embodiment of the present utility model;

[0019] Figure 6 It is for Figure 5 a cross-sectional view in the A-A direction of

[0020] Figure 7It is the other side view of the embodiment of the present utility model;

[0021] Figure 8 It is Figure 7 the sectional view taken along the B - B direction of

[0022] Figure 9 It is the structural schematic diagram of the forming female die of the embodiment of the present utility model;

[0023] Figure 10 It is the assembly schematic diagram of the embodiment of the present utility model.

[0024] Label description

[0025] Forming female die 1, upper cavity 11, lower cavity 12, first lower cavity 121, second lower cavity 122, step 13, first through - hole 14, female die fixing plate 15, forming upper punch 2, upper insertion part 21, arc groove 22, second through - hole 23, forming upper punch fixing plate 24, forming lower punch 3, lower insertion part 31, first insertion post 311, second insertion post 312, third through - hole 32, forming lower punch fixing plate 33, forming core rod 4, core rod cylinder 41, powder metallurgy product 5, U - shaped groove 51, central hole 52, die - set guiding column 6. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0027] In order to better understand the above - mentioned technical solutions, the exemplary embodiments of the present utility model will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be fully conveyed to those skilled in the art.

[0028] As Figures 3 to 10 shown, a powder metallurgy product forming die of the embodiment of the present utility model includes a forming female die 1, a forming upper punch 2, a forming lower punch 3 and a forming core rod 4.

[0029] The forming female die 1 forms an upper cavity 11 and a lower cavity 12 axially. A step 13 matching the shape of the U-shaped groove 51 of the powder metallurgy product 5 is formed at the bottom of the upper cavity 11 axially. The step 13 separates the upper cavity 11 and the lower cavity 12. The forming female die 1 forms a through axial first through hole 14, and the axial first through hole 14 passes through the step 13.

[0030] The forming upper punch 2 has an upper insertion part 21 that can be inserted into the upper cavity 11 of the forming female die 1. An arc-shaped groove 22 is formed radially at the end of the upper insertion part 21. The arc-shaped groove 22 matches the outer circumference of the powder metallurgy product 5. The forming upper punch 2 forms an axial second through hole 23 corresponding to the axial first through hole 14, and the axial second through hole 23 passes through the upper insertion part 21.

[0031] The forming lower punch 3 has a lower insertion part 31 that can be inserted into the lower cavity 12 of the forming female die 1. The forming lower punch 3 forms an axial third through hole 32 corresponding to the axial first through hole 14, and the axial third through hole 32 penetrates the forming lower punch 3. Optionally, the lower insertion part 31 of the forming lower punch 3 includes a first insertion post 311 and a second insertion post 312 arranged oppositely. The lower cavity 12 of the forming female die 1 is correspondingly arranged as a first lower cavity 121 for inserting the first insertion post 311 and a second lower cavity 122 for inserting the second insertion post 312.

[0032] The forming core rod 4 can be sequentially inserted into the axial third through hole 32, the axial first through hole 14, and the axial second through hole 23. The forming core rod 4 correspondingly forms the central hole 52 of the powder metallurgy product 5.

[0033] Optionally, the forming female die 1 is fixed on the female die fixing plate 15. The forming upper punch 2 is installed on the forming upper punch fixing plate 24, and the forming upper punch fixing plate 24 is slidably sleeved on the die frame guiding column 6. The die frame guiding column 6 is fixed on the female die fixing plate 15. The forming lower punch 3 is installed on the forming lower punch fixing plate 33, and the forming lower punch fixing plate 33 is slidably sleeved on the die frame guiding column 6. The forming core rod 4 is fixed on the floating core rod cylinder 41.

[0034] Since the forming female die 1 forms an axial cavity 11 and a lower cavity 12, a step 13 matching the shape of the U-shaped groove 51 of the powder metallurgy product 5 is formed at the bottom of the axial cavity 11; the forming upper punch 2 has an upper insertion part 21 that can be inserted into the upper cavity 11 of the forming female die 1, and an arc-shaped groove 22 is formed along the radial direction at the end of the upper insertion part 21, and the arc-shaped groove 22 matches the outer circumference of the powder metallurgy product 5; the forming lower punch 3 has a lower insertion part 31 that can be inserted into the lower cavity 12 of the forming female die 1; the forming mandrel 4 can be sequentially inserted into the axial third through hole 32, the axial first through hole 14 and the axial second through hole 23, and the forming mandrel 4 corresponds to the central hole 52 of the powder metallurgy product 5; so that the central hole 52 at the bottom of the U-shaped groove 51 of the powder metallurgy product 5 can be directly formed by the cooperation of the forming upper punch 2, the forming female die 1, the forming lower punch 3 and the forming mandrel 4, thereby reducing the processing procedures of the powder metallurgy product, improving the production efficiency, and ensuring the hole position dimension accuracy.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0037] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0040] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A powder metallurgy product forming die, characterized in that Comprising: A forming female die, the forming female die forms an upper cavity and a lower cavity in the axial direction, a step matching the shape of the U-shaped groove of the powder metallurgy product is formed at the bottom of the upper cavity in the axial direction, and the step separates the upper cavity and the lower cavity; the forming female die forms a through axial first through hole, and the axial first through hole passes through the step; A forming upper punch, the forming upper punch has an upper insertion part that can be inserted into the upper cavity of the forming female die, and an arc-shaped groove is formed in the radial direction at the end of the upper insertion part; the forming upper punch forms an axial second through hole corresponding to the axial first through hole, and the axial second through hole passes through the upper insertion part; A forming lower punch, the forming lower punch has a lower insertion part that can be inserted into the lower cavity of the forming female die, and the forming lower punch forms an axial third through hole corresponding to the axial first through hole, and the axial third through hole penetrates through the forming lower punch; A forming mandrel, the forming mandrel can be sequentially inserted into the axial third through hole, the axial first through hole and the axial second through hole.

2. The powder metallurgy product forming die according to claim 1, wherein The forming female die is fixed on the female die fixing plate; the forming upper punch is installed on the forming upper punch fixing plate, the forming upper punch fixing plate is slidably sleeved on the die frame guiding column, and the die frame guiding column is fixed on the female die fixing plate; the forming lower punch is installed on the forming lower punch fixing plate, and the forming lower punch fixing plate is slidably sleeved on the die frame guiding column; the forming mandrel is fixed on the floating mandrel cylinder.

3. A powder metallurgy product forming die as claimed in claim 1, wherein, The lower insertion part of the forming lower punch includes a first insertion post and a second insertion post arranged oppositely; the lower cavity of the forming female die is correspondingly arranged as a first lower cavity for inserting the first insertion post and a second lower cavity for inserting the second insertion post.

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