Special machining tool for sheet parts

Abstract

The utility model belongs to the technical field of part machining, and particularly relates to a special machining tool for sheet parts, which comprises an upper die holder and a lower die holder, and both the upper die holder and the lower die holder are provided with cavities for accommodating sheet materials. A forming female die is arranged on the edge of a cavity of the upper die base, a punch fixing base is arranged on the lower die base, a punch is installed on the punch fixing base, and the punch can abut against a plate to stretch into the forming female die to enable a part to be in a flanging shape. When the die works, the blank holder is firstly ejected out, a plate is placed on the blank holder, the upper die base moves downwards and continues to move downwards after being closed with the blank holder, and when the upper die base moves to 10-15 mm, the male die starts to make contact with the plate, the blank holder and the upper die base continue to move downwards; in the machining process, due to the fact that only one part of the punch is matched with the outer edge of the thin plate part, four arc-shaped crescent-shaped positioning holes are formed in the edge of the part, positioning pins can be positioned in the positioning holes in the subsequent punching machining process, and the function of accurate positioning is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of part processing, specifically relates to a special processing frock of sheet metal part. BACKGROUND

[0002] Sheet metal parts are widely used in automobiles, aerospace, household appliances and metal clamps, and in recent years, the quality and precision requirements of sheet metal parts are higher and higher, leading to difficult production and processing.

[0003] Sheet metal parts still need to be punched after initial forming, and because the thickness of sheet metal parts is small, the processing is prone to deformation, so accurate positioning of sheet metal parts is needed before processing, and the parts processed by existing equipment do not have positioning reference, which is not conducive to the positioning of subsequent punching processing, therefore, a special processing frock for sheet metal parts is improved and designed. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a special processing frock for sheet metal parts to solve the problems in the background art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A special processing frock for sheet metal parts, comprising an upper die holder and a lower die holder, the upper die holder and the lower die holder are both provided with a cavity for accommodating a plate, the edge of the cavity of the upper die holder is provided with a forming concave die, the lower die holder is provided with a punch holder, the punch holder is installed on the punch holder, and the punch can be inserted into the forming concave die, so that the outer edge of the sheet metal part forms a positioning reference hole.

[0007] By adopting the above structure, the special processing frock for sheet metal parts comprises an upper die holder and a lower die holder, the forming concave die is fixed on the upper die holder, and the punch is fixed on the lower die holder by the punch holder. The plate is placed in the cavity of the lower die holder, and when the mold works, the upper die holder moves downward, and as the upper die holder continues to move downward, the forming concave die and the punch begin to contact the plate from both sides and extrude the plate, so that the plate is inserted into the forming concave die, the sheet metal part forms a positioning reference hole, which can be used as a positioning reference for subsequent punching processing, and plays a role in accurate positioning.

[0008] Further, the cavity is divided into a part forming area and a non-part forming area, and the forming concave die and the punch are both arranged in the non-part forming area.

[0009] Further, the forming concave die and the punch are both circular, and part of the punch contacts the edge of the sheet metal part, so that the punched hole of the edge of the sheet metal part is in the shape of a crescent.

[0010] Further, the number of the forming concave die and punch is four, so that the outer edge of the part product forms a half-moon positioning hole, which plays a function of accurate positioning in the subsequent part production. The edge ring is first ejected, the sheet is placed on the edge ring, the upper die seat moves downward, and after the edge ring is closed, the edge ring and the upper die seat continue to move downward, when the movement is 10-15 mm, the punch starts to contact the sheet, the edge ring and the upper die seat continue to move downward, and after the work of the concave die and the punch, the part edge forms four arc-shaped crescent positioning holes due to the fact that only a part of the punch contacts the outer edge of the sheet part in the machining process, so that the positioning pin can be positioned on the positioning hole in the subsequent punching process, and the function of accurate positioning is played.

[0011] Further, the upper die seat and the lower die seat are respectively provided with an upper die seat forming insert and a lower die seat forming insert on the cavity.

[0012] Further, the lower die seat is provided with an elastic edge ring outside the cavity.

[0013] Compared with the prior art, the special machining tool for the sheet part has the following beneficial effects: the special machining tool for the sheet part comprises an upper die seat and a lower die seat, the forming concave die is fixed on the upper die seat, and the punch is fixed on the lower die seat by a punch fixing seat. The sheet is placed in the cavity of the lower die seat, the upper die seat moves downward during the work of the die, the forming concave die and the punch start to contact and extrude the sheet from both sides as the upper die seat continuously moves downward, the sheet is inserted into the forming concave die, the outer edge of the sheet part forms a positioning reference hole, which can be used as a positioning reference for subsequent punching and plays a function of accurate positioning. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of an embodiment of the special machining tool for the sheet part.

[0015] Figure 2 It is a structure schematic view of an embodiment of the special machining tool for the sheet part. Figure 1 It is a sectional view of A-A.

[0016] Figure 3 It is a structure schematic view of the lower die seat in the embodiment of the special machining tool for the sheet part.

[0017] Figure 4 It is an enlarged view of A. Figure 3

[0018] The reference signs in the drawings of the specification include:

[0019] The upper die seat (1), the forming concave die (11), the upper die seat forming insert (12), the lower die seat (2), the punch fixing seat (21), the punch (22), the lower die seat forming insert (23), and the edge ring (3). DETAILED DESCRIPTION​

[0020] In order for those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in conjunction with the drawings and examples.

[0021] Among them, the drawings are only used for example, the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the patent; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0022] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the positional relationship described in the drawings is only used for example, and cannot be understood as a limitation of the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0023] In the description of the present application, unless otherwise explicitly specified and limited, if the term "connection" and the like appear to indicate the connection relationship between the components, the term should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific situation.

[0024] Example one:

[0025] As Figures 1-2As shown, the utility model discloses a special machining tool for sheet metal parts. Specifically, the special machining tool for sheet metal parts comprises an upper die holder 1 and a lower die holder 2. The upper die holder 1 and the lower die holder 2 are both provided with a cavity for accommodating sheet metal. The cavity of the upper die holder 1 is provided with a forming die 11. The lower die holder 2 is provided with a punch holder 21. The punch holder 21 is provided with a punch 22. The outer edge of the sheet metal part is formed with a positioning reference hole. Through the above structure, the special machining tool for sheet metal parts comprises the upper die holder 1 and the lower die holder 2. The forming die 11 is fixed on the upper die holder 1. The punch 22 is fixed on the lower die holder 2 by the punch holder 21. When the die works, the edge ring is first ejected. The sheet metal is placed on the edge ring. The upper die holder moves downward. After the upper die holder and the edge ring are closed, they continue to move downward. When the movement is 10-15 mm, the punch starts to contact the sheet metal. The edge ring and the upper die continue to move downward. After the forming die and the punch work, the edge of the part is formed with four arc-shaped crescent positioning holes in the machining process because only a part of the punch contacts the outer edge of the sheet metal part. In the subsequent punching process, the positioning pin can be positioned in the positioning hole, thereby achieving accurate positioning.

[0026] In the embodiment, the cavity is divided into a part forming area and a non-part forming area. The forming die 11 and the punch 22 are both arranged in the non-part forming area. The forming die 11 and the punch 22 are both circular. A part of the punch 22 contacts the edge of the sheet metal part, so that the punched hole of the sheet metal part is arc-shaped crescent. The number of the forming die 11 and the punch 22 is four. The outer edge of the part product is formed with four half-moon-shaped flange shapes. In the subsequent part production process, accurate positioning is achieved.

[0027] The cavity of the upper die holder 1 and the lower die holder 2 is respectively provided with an upper die holder forming insert 12 and a lower die holder forming insert 23. The cavity of the lower die holder 2 is provided with an elastic edge ring 3.

[0028] Working principle: the edge ring is first ejected. The sheet metal is placed on the edge ring. The upper die holder moves downward. After the upper die holder and the edge ring are closed, they continue to move downward. When the movement is 10-15 mm, the punch starts to contact the sheet metal. The edge ring and the upper die continue to move downward. After the forming die and the punch work, the edge of the part is formed with four arc-shaped crescent positioning holes in the machining process because only a part of the punch contacts the outer edge of the sheet metal part. In the subsequent punching process, the positioning pin can be positioned in the positioning hole, thereby achieving accurate positioning.

[0029] The above is only an embodiment of the present application, and the circuit, electronic components and modules involved are all prior art, which can be implemented by those skilled in the art without further description. The content protected by the present application does not involve improvement of software and methods. The common knowledge of specific structures and characteristics in the scheme is not described in detail here. Those skilled in the art know all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and have the ability to apply conventional experimental means before that date. Those skilled in the art can improve and implement the present scheme based on their own ability under the guidance of the present application. Some typical known structures or methods should not be an obstacle for those skilled in the art to implement the present application. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. These will not affect the effect and practicality of the present application.

Claims

1. A special machining tool for sheet metal parts, comprising an upper die holder (1) and a lower die holder (2), each provided with a cavity for accommodating a sheet metal, characterized in that: The cavity outer edge of the upper die holder (1) is provided with a forming die (11), the lower die holder (2) is provided with a punch fixing seat (21), the punch fixing seat (21) is installed with a punch (22) matched with the forming die (11), and the punch (22) can enter the forming die (11) to make the outer edge of the sheet metal part form a positioning reference hole when stamping; The cavity is divided into a part forming area and a non-part forming area, and the forming die (11) and the punch (22) are arranged in the non-part forming area; The forming die (11) and the punch (22) are both circular, and part of the punch (22) is in contact with the edge of the sheet metal part, so that the edge of the sheet metal part is punched into a crescent shape; The number of the forming die (11) and the punch (22) is four, so that the outer edge of the part product forms a 4-semi-crescent flange shape, and the function of accurate positioning is achieved in the subsequent part production process; The cavity of the upper die holder (1) and the lower die holder (2) is respectively provided with an upper die holder forming insert (12) and a lower die holder forming insert (23).

2. The machining tool for sheet metal parts as claimed in claim 1, characterized in that: The cavity of the lower die holder (2) is provided with an elastic edge ring (3).

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