CN202591382U - Stretching mould for disclike workpiece - Google Patents

Abstract

The utility model relates to a disclike workpiece stretching mould, in particular to a disclike workpiece stretching mould for processing a cover plate of an air cylinder on a right angle valve. The disclike workpiece stretching mould comprises a mould plate, a pressure plate and a punch. The mould plate is provided with a recess, and a flat pit for placing a panel is formed in the upper surface of the mould plate in a position above the recess. The pressure plate is provided with a circular hole which corresponds to the flat pit and the recess in the mould plate in position. The punch is divided into an upper section and a lower section. The upper section is cylindrical, and the diameter of the upper section is equal to that of the circular hole in the pressure plate. The lower section is a trapezoidal cylinder, and the shape of the lower section corresponds to that of the recess in the mould plate. The diameter of the lower end of the lower section of the punch plus two times of thickness of the panel is equal to the diameter of the bottom of the recess in the mould plate. The diameter of the upper end of the lower section of the punch plus two times of thickness of the panel is equal to the diameter of the top of the recess in the mould plate. The disclike workpiece stretching mould is less in energy consumption and low in production cost. The disclike workpiece produced by the disclike workpiece stretching mould is good in quality and low in rejection ratio.

Description

Disc-shaped workpiece drawing die

technical field

The utility model relates to a disc-shaped workpiece stamping die. Specifically, it is a drawing die for a disc-shaped workpiece used to process a cylinder head plate on a right-angle valve. the

Background technique

At present, in the machining industry, the method used to process disc-shaped workpieces is mainly the casting method, that is, using the disc-shaped lower mold and the columnar upper mold, while pouring the molten metal into the disc-shaped lower mold, the columnar upper mold enters the In the disc-shaped lower mold, the molten metal is hydraulically cast into a disc-shaped workpiece blank. Then, the metal blank is cut to make the required disc-shaped workpiece. Since the casting method needs to be equipped with a melting furnace to smelt the metal, the energy consumption is high and the production cost is high. And because the casting method requires the impurity content of the molten metal to be particularly low, otherwise, air bubbles are likely to appear in the cast workpiece. Therefore, the quality of the disc-shaped workpiece produced by the casting method is relatively poor, and the reject rate is high. the

Utility model content

The problem to be solved by the utility model is to provide a drawing die for a disc-shaped workpiece. The disc-shaped workpiece stretching die has less energy consumption and low production cost. The disc-shaped workpiece produced by this mold has good quality and low scrap rate. the

In order to solve the above problems, the utility model takes the following technical solutions:

The drawing die of the disc-shaped workpiece of the utility model is characterized in that it comprises a template, a pressing plate and a punch. There is a pit on the template, and the upper end of the pit is trumpet-shaped. The upper surface of the formwork has a flat pit for placing the plate above the pit, and the depth of the flat pit is equal to the thickness of the plate. There are circular holes on the pressing plate, which correspond to the positions of the flat-bottomed pits and pits on the template. The punch is divided into an upper section and a lower section. The upper section is cylindrical and its diameter is equal to the diameter of the round hole on the pressing plate. The lower section is a trapezoidal cylinder whose shape corresponds to the shape of the pit on the template. equal in diameter. The diameter of the lower end of the lower section of the punch + twice the thickness of the sheet = the diameter of the bottom of the pit on the template, the diameter of the upper end of the lower section of the punch + twice the thickness of the sheet = the diameter of the top of the pit on the template.

Wherein, the round hole on the pressing plate, the pit on the template and the punch are all concentric with the flat bottom pit. the

Adopting the above scheme has the following advantages:

It can be seen from the above scheme that the metal plate can be stamped into a disc-shaped workpiece only by using the disc-shaped workpiece drawing die of the utility model in conjunction with the punching machine. Compared with the traditional casting method, no furnace is required and energy consumption is reduced. Less, can reduce production cost. The quality of the disc-shaped workpiece stamped by the disc-shaped workpiece stretching die of the present utility model depends entirely on the quality of the metal sheet. As long as a better sheet such as a stainless steel sheet is selected, the quality of the workpiece can be guaranteed. . Therefore, compared with the background technology, the occurrence of air bubbles in the workpiece can be avoided, the quality of the workpiece can be ensured, and the rejection rate of the workpiece can be greatly reduced.

Description of drawings

Fig. 1 is the structural representation of the disc-shaped workpiece stretching die of the present utility model;

Fig. 2 is an exploded schematic view of the disc-shaped workpiece stretching die of the present invention.

Detailed ways

As shown in Figures 1 and 2, the disc-shaped workpiece drawing die of the present utility model includes a template 6, a pressing plate 2 and a punch. There is a pit 5 on the template 6, and the upper end of the pit 5 is trumpet-shaped. The upper surface of the template 6 has a flat-bottomed pit 1 for placing the plate above the pit 5, and the depth of the flat-bottomed pit 1 is equal to the thickness of the plate. There is a round hole on the pressing plate 2, and the round hole corresponds to the positions of the flat-bottomed pit 1 and the pit 5 on the template. The punch is divided into an upper section 3 and a lower section 4, the upper section 3 is cylindrical, and its diameter is equal to the diameter of the round hole on the pressing plate 2, and the lower section 4 is a trapezoidal cylinder whose shape corresponds to the shape of the pit 5 on the template. The diameter of the upper end of the lower section 4 is equal to the diameter of the upper section 3 . In this embodiment, the length of the lower section 4 of the punch plus the thickness of the sheet is equal to the depth of the pit 5 . The diameter of the lower end of the lower section 4 of the punch+twice the thickness of the plate=the diameter of the bottom of the pit 5 on the template, the diameter of the upper end of the lower section 4 of the punch+twice the thickness of the sheet=the diameter of the top of the pit 5 on the template. The circular hole on the pressing plate 2, the pit 5 and the punch on the template are all concentric with the flat pit 1. the

During work, the template 6 is first fixed on the base of the punching machine with a clamp, and then the punched metal plate is put into the flat pit 1 on the template, and then the clamp is used to press the pressing plate 2 tightly on the upper surface of the template 6, so that The metal plate is clamped between the template 6 and the pressing plate 2. Finally, the punch is quickly entered into the round hole on the pressing plate 2 and the pit 5 on the template by using a punching machine, and the metal plate is stamped into a disc-shaped workpiece. the

Claims (3)

1. the plate-like workpiece drawing die is characterized in that comprising template (6), pressing plate (2) and drift, and pit (5) is arranged on the template (6), and pit (5) upper end is tubaeform; Template (6) upper surface is useful on the flat hole (1) of placing sheet material in the top of pit (5), the degree of depth of flat hole (1) equates with the thickness of sheet material; Said pressing plate has circular hole on (2), and this circular hole is corresponding with the position that template (6) goes up flat hole (1) and pit (5); Said drift is divided into epimere (3) and hypomere (4); Epimere (3) is cylindrical; Its diameter equates with Circularhole diameter on the pressing plate (2); Hypomere (4) is trapezoidal cylinder, and the shape of pit (5) is corresponding on its shape and the template, the diameter and epimere (3) equal diameters of hypomere (4) upper end; The diameter of pit (5) bottom on sheet metal thickness=template of diameter+two of drift hypomere (4) lower end times, the diameter at pit (5) top on sheet metal thickness=template of diameter+two of drift hypomere (4) upper end times.

2. plate-like workpiece drawing die according to claim 1 is characterized in that circular hole, the pit on the template (5) and the drift on the said pressing plate (2) is all concentric with flat hole (1).

3. plate-like workpiece drawing die according to claim 1 is characterized in that the length of said drift hypomere (4) adds the degree of depth that sheet material thickness equals pit (5).

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