CN202591385U - Drawing die for trumpet-shaped cup-shaped workpiece - Google Patents

Abstract

The utility model relates to a drawing die for a trumpet-shaped cup-shaped workpiece, in particular to a drawing die for machining the trumpet-shaped cup-shaped workpiece of a connector on a right angle valve. The drawing die is characterized by comprising a die plate, a pressing plate and a punch; the die plate and the pressing plate are both provided with circular holes, and the circular holes of the die plate and the pressing plate correspond to each other; the circular hole on the die plate comprises an upper section and a lower section, the upper section has a shape of a trumpet with a large upper part and a small lower part, and the lower section is cylindrical; the diameter of the upper section is equal to that of the lower section; a flat bottom pit into which a plate is placed is formed on the upper surface of the die plate and above the circular hole; the depth of the flat bottom pit is equal to the thickness of the plate; the punch is cylindrical, and the diameter of the punch is equal to that of the circular hole of the pressing plate; and the diameter of the lower section of the circular hole on the die plate is the sum of the diameter of the punch and the double thickness of the plate. The drawing die for the trumpet-shaped cup-shaped workpiece is low in energy consumption and production cost. The trumpet-shaped cup-shaped workpiece produced by using the drawing die is high in quality and low in rejection rate.

Description

Trumpet-shaped cup-shaped workpiece drawing die

technical field

The utility model relates to a stamping die for a cylindrical workpiece. Specifically, it is a drawing die used to process the trumpet-shaped cup-shaped workpiece of the upper connecting body of a right-angle valve. the

Background technique

At present, in the machining industry, the method used to process trumpet-shaped cup-shaped workpieces is mainly the casting method, that is, using a trumpet-shaped cup-shaped lower mold and a columnar upper mold, while pouring molten metal into the lower mold, the upper mold Enter the lower mold, so that the molten metal is hydraulically cast into a trumpet-shaped cup-shaped workpiece blank. Then, the metal blank is cut to make the required trumpet-shaped cup-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 horn-shaped cup-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 trumpet-shaped cup-shaped workpiece stretching die. The drawing die consumes less energy and has low production cost. The trumpet-shaped cup-shaped workpiece produced by this mold has good quality and low reject rate. the

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

The feature of the trumpet-shaped cup-shaped workpiece stretching die of the utility model is to include a template, a pressing plate and a punch, and the template and the pressing plate all have circular holes and the circular holes on the two correspond. The circular hole on the formwork is divided into an upper section and a lower section, the upper section is trumpet-shaped with a large upper part and a smaller lower section, the lower section is cylindrical, and the diameter of the lower end of the upper section is equal to that of the lower section. The upper surface of the formwork has a flat-bottomed pit above the circular hole for placing the plate, and the depth of the flat-bottomed pit is equal to the thickness of the plate. The punch is cylindrical, and its diameter is equal to the diameter of the round hole on the pressing plate. The diameter of the punch+twice the thickness of the plate=the diameter of the lower section of the round hole on the template.

Wherein, the round hole on the pressing plate, the round hole on the template and the punch are all concentric with the flat 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 trumpet-shaped cup-shaped workpiece only by using the trumpet-shaped cup-shaped workpiece drawing die of the utility model in conjunction with the punching machine. Furnace is needed, energy consumption is less, and production cost can be reduced. Again owing to adopting the horn-shaped cup-shaped workpiece stamped by the horn-shaped cup-shaped workpiece stretching die of the present utility model, its quality depends entirely on the quality of the metal plate, as long as select better plate such as stainless steel plate, just can Ensure the quality of the workpiece. 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 trumpet-shaped cup-shaped workpiece stretching die of the present utility model;

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

Detailed ways

As shown in Figures 1 and 2, the trumpet-shaped cup-shaped workpiece drawing die of the present utility model includes a template 6, a pressing plate 3 and a punch 2, and there are round holes on the template 6 and the pressing plate 3, and the round holes on the two correspond to each other. ; The circular hole on the template 6 is divided into upper section 4 and lower section 5, upper section 4 is a trumpet shape with a large upper part and a lower section, and the lower section 5 is cylindrical, and the diameter of the lower end of the upper section 4 is equal to the diameter of the lower section 5; the upper surface of the template 6 is in the There is a flat-bottomed pit 1 for placing the plate above the round hole, and the depth of the flat-bottomed pit 1 is equal to the thickness of the plate; the punch 2 is cylindrical, and its diameter is equal to the diameter of the round hole on the pressing plate 3. + Twice the thickness of the plate = the diameter of the lower section 5 of the circular hole on the template. The round hole on the pressing plate 3 , the round hole on the template 6 and the punch 3 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 3 tightly on the upper surface of the template 6, so that The metal plate is clamped between the template 6 and the pressure plate 3, and finally, the punch 2 is quickly entered into the round hole on the pressure plate 3 and the round hole on the template 6 by a punching machine, and the metal plate is punched into a trumpet-shaped cup-shaped workpiece . the

Claims (2)

1. tubaeform cup-shaped workpiece drawing die is characterized in that comprising template (6), pressing plate (3) and drift (2), all has circular hole and the circular hole on the two corresponding on template (6) and the pressing plate (3); Circular hole on the template (6) is divided into epimere (4) and hypomere (5), and epimere (4) is up big and down small tubaeform, and hypomere (5) is cylindrical, the diameter of epimere (4) lower end and the equal diameters of hypomere (5); The upper surface of template (6) is useful on the flat hole (1) of placing sheet material above circular hole, the degree of depth of flat hole (1) equates with the thickness of sheet material; Said drift (2) is cylindrical, and its diameter equates with Circularhole diameter on the pressing plate (3), the diameter of circular hole hypomere (5) on sheet metal thickness=template of diameter+two of drift (2) times.

2. tubaeform cup-shaped workpiece drawing die according to claim 1 is characterized in that circular hole, the circular hole on the template (6) and the drift (2) on the said pressing plate (3) is all concentric with flat hole (1).

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