CN102615186A - Dressing die for stepped cup workpiece - Google Patents

Abstract

The invention relates to a dressing die for a stepped cup workpiece, in particular to a dressing die used for machining a stepped cup workpiece on a right angle valve. The dressing die is characterized by comprising a die plate and a punch. A round hole is reserved on the die plate. The round hole is divided into a first upper section and a first lower section, the first upper section is concentric with the first lower section and the diameter of the first upper section is larger than that of the first lower section, and a step is formed on the connection of the two. The punch is divided into a cylindrical second upper section and a cylindrical second lower section, the second upper section is concentric with the second lower section and the diameter of the second upper section is larger than that of the second lower section, and a step is formed on the connection of the two. The diameter of the first upper section equals to the diameter of the second upper section plus double thickness of a plate. The diameter of the first lower section equals to the diameter of the second lower section plus double thickness of a plate. The dressing die for the stepped cup workpiece is low in energy consumption and production cost, and the produced stepped cup workpiece is fine in quality and low in rejection rate.

Description

Cup-shaped workpiece shaping mold with steps

technical field

The invention relates to a two-stage cylindrical workpiece stamping die. Specifically, it is a plastic mold for processing rectangular cup-shaped workpieces with steps.

Background technique

At present, in the machining industry, the method used to process cup-shaped workpieces with steps is mainly the casting method, that is, using a cup-shaped lower die with steps and a columnar upper die connected in two stages, pouring the molten metal While entering the cup-shaped lower mold with steps, the two-stage connected columnar upper mold enters the cup-shaped lower mold, so that the molten metal is hydraulically cast into a cup-shaped workpiece blank with steps. Then, the metal blank is cut to make the required cup-shaped workpiece with steps. 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 cup-shaped workpiece with steps produced by the casting method is relatively poor, and the reject rate is high.

Contents of the invention

The problem to be solved by the present invention is to provide a cup-shaped workpiece shaping mold with steps. The cup-shaped workpiece shaping mold with steps has low energy consumption and low production cost. The cup-shaped workpiece with steps produced by this shaping mold has good quality and low reject rate.

In order to solve the above problems, the present invention takes the following technical solutions:

The step-shaped cup-shaped workpiece shaping mold of the present invention is characterized in that it includes a template and a punch, and the template has a round hole, which is divided into a first upper section and a first lower section. The diameter of the first upper section is larger than that of the first lower section and the two are concentric, so that a step is formed at the junction of the two, and the upper ends of the first upper section and the first lower section are both trumpet-shaped. The punch is divided into a second upper section and a second lower section, both of which are cylinders. The diameter of the second upper section is larger than that of the second lower section and the two are concentric, so that a step is formed at the junction of the two, and the lower end edges of the second upper section and the second lower section are arc-shaped. The diameter of the second upper section+double the plate thickness=the diameter of the first upper section, the diameter of the second lower section+double the plate thickness=the diameter of the first lower section.

Wherein, the length of the second upper section is not less than the length of the first upper section.

Adopting the above scheme has the following advantages:

It can be seen from the above scheme that the metal cup-shaped workpiece that has been processed in the previous process can be stamped into a stepped cup-shaped workpiece by using the stepped cup-shaped workpiece shaping die of the present invention in conjunction with a punching machine. Compared with the traditional casting method, no furnace is needed, the energy consumption is less, and the production cost can be reduced. Owing to adopting the cup-shaped workpiece shaping mold that has step of the present invention to be stamped into workpiece again, its quality depends on the quality of sheet metal, as long as select better sheet material such as stainless steel sheet for use, just can guarantee the quality of 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 cup-shaped workpiece shaping die with steps of the present invention;

Fig. 2 is an exploded schematic view of the cup-shaped workpiece shaping mold with steps of the present invention.

Detailed ways

As shown in FIGS. 1 and 2 , the stepped cup-shaped workpiece shaping mold of the present invention includes a template 5 and a punch. There is a circular hole on the template, and the circular hole is divided into a first upper section 2 and a first lower section 3 . The diameter of the first upper section 2 is larger than that of the first lower section 3 and both are concentric, so that a step is formed at the junction of the two, and the upper ends of the first upper section 2 and the first lower section 3 are both trumpet-shaped. The punch is divided into a second upper section 1 and a second lower section 4, both of which are cylinders. The diameter of the second upper section 1 is larger than that of the second lower section 4 and both are concentric, so that a step is formed at the junction of the two, and the lower end edges of the second upper section 1 and the second lower section 4 are arc-shaped. The diameter of the second upper section 1+twice the thickness of the plate=the diameter of the first upper section 2, the diameter of the second lower section 4+the double thickness of the sheet=the diameter of the first lower section 3. The length of the second upper section 1 is not less than the length of the first upper section 2 .

During work, first template 5 is fixed on the stamping machine base with fixture, then the cup-shaped workpiece punched through the previous process is put into the first upper section 2 on the template 5. At this time, the diameter of the first upper section 2 is the same as the cup The outer diameters of the cup-shaped workpieces should be the same. Then, the punches are quickly entered into the first upper section 2 and the first lower section 3 of the template 5 by a punching machine, and the cup-shaped workpieces are stamped into cup-shaped workpieces with steps.

Claims (2)

1. The cup-shaped workpiece shaping mold with steps is characterized in that it includes a template (5) and a punch. There is a round hole on the template, and the round hole is divided into the first upper section (2) and the first lower section (3); the second The diameter of an upper section (2) is larger than that of the first lower section (3) and the two are concentric, so that a step is formed at the junction of the two, and the upper ends of the first upper section (2) and the first lower section (3) are both Trumpet-shaped; the punch is divided into a second upper section (1) and a second lower section (4), both of which are cylinders; the diameter of the second upper section (1) is larger than The diameter of the second lower section (4) and the two are concentric, thereby forming a step at the junction of the two, and the lower end edges of the second upper section (1) and the second lower section (4) are arc-shaped; the second upper section (1) ) diameter+twice the plate thickness=the diameter of the first upper section (2), the diameter of the second lower section (4)+twice the sheet thickness=the diameter of the first lower section (3). 2. The stepped cup-shaped workpiece shaping mold according to claim 1, characterized in that the length of the second upper section (1) is not less than the length of the first upper section (2).

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