CN104815923A - Stamping process of an automobile sealing cover - Google Patents

Abstract

The invention discloses a stamping process of an automobile sealing cover, which comprises the following steps: A. blanking, and punching a round metal sheet of a standard shape on the metal plate. B. And stretching, namely stretching the metal sheet by using a punch press, and stretching the middle part of the metal sheet to form a round convex top so that the metal sheet is in a hat shape. C. And (4) punching, namely punching the round convex top position of the metal sheet. D. And flanging, namely punching a hole at the position of the round convex top and forming a bending edge, and flanging the bending edge to ensure that the bending edge is vertical and the round convex top forms an annular pier wall. E. And (4) punching a stepped step on the inner wall of the annular pier wall by using a punch. F. And the oil flushing groove is used for flushing an oil groove on the inner wall of the annular pier wall by utilizing the punch, and the oil groove is communicated with the upper surface of the pier wall and the lower surface of the metal sheet. G. And punching the cover hole, and uniformly punching a plurality of through holes on the peripheral surface of the outer ring of the metal sheet. The scheme has the advantages of simple processing, low cost, less time consumption and the like.

Description

Stamping process of an automobile sealing cover

【Technical field】

The invention relates to a stamping process of an automobile sealing cover.

【Background technique】

At present, automobile sealing caps are generally punched out of some specified shapes by a punching machine, and then used for finishing, but many shapes of these sealing caps need to be taken to a lathe or milling machine for finishing operations, so that the processing cost will be higher. , takes longer and wastes more manpower.

【Content of invention】

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a stamping process of an automobile sealing cover with simple processing, low cost and less time-consuming.

For above-mentioned purpose, the present invention adopts following technical scheme:

A stamping process for an automobile sealing cover, characterized in that it comprises the following steps:

A. Blanking, punching out standard circular metal sheets on the metal plate;

B. Stretching, use a punch to stretch the metal sheet, and stretch the middle of the metal sheet to form a round convex top, so that the metal sheet forms a hat shape;

C. Punching, punching the convex top position of the metal sheet;

D. Flanging, after punching a hole at the position of the domed top, there is still a bent edge, and the bent edge is flanged to make the bent edge vertical, so that the domed top forms a circular pier wall ;

E, the inner step of the pier, use a punch to punch out a stepped step from the inner wall of the annular pier wall;

F. Punch the oil groove, use a punch to punch out another oil groove on the inner wall of the annular pier wall, and the oil groove connects the upper surface of the pier wall and the lower surface of the metal sheet;

G. Punching cover hole, evenly punch out multiple through holes on the surface around the outer ring of the metal sheet.

The stamping process of the automobile sealing cover as described above is characterized in that there is a shaping step between the above-mentioned D step and E step, and the pier thickness of the annular pier wall is extruded and thickened, and then the thickness of the annular pier wall is increased. The height is raised, so that the pier thickness is correspondingly thinned.

The stamping process of the automobile sealing cover as described above is characterized in that in the step B, the stretching is divided into three steps for stretching, so that the metal shape process is stable.

The stamping process of the automobile sealing cover as described above is characterized in that in the step G, after the holes of the cover are punched, the holes of the cover are reshaped and chamfered.

The beneficial effects of the present invention have:

The present invention utilizes a punching machine to sequentially punch metal sheets into a prescribed shape, especially the oil flushing groove in stamping step F. This step has never appeared before, and the oil flushing groove is stamped and formed in one step, which saves a lot of time for milling the oil groove with a milling machine. Time and cost are greatly reduced.

In general, this case has the advantages of simple processing, low cost, and less time-consuming.

【Description of drawings】

Figure 1 is a schematic diagram of a stamped metal sheet.

Figures 2-4 are schematic illustrations of the sheet metal stretching stages.

Fig. 5 is a schematic diagram of the metal sheet punching stage.

Fig. 6 is a schematic diagram of the flanging stage of the metal sheet.

Figures 7-9 are schematic diagrams of sheet metal shaping and inner steps of the pier.

Fig. 10 is a schematic diagram of the oil flushing groove of the metal sheet.

Figures 11-12 are schematic diagrams of sheet metal punching method to cover holes.

Figure 13 is a schematic diagram of a mold assembly.

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

As shown in the figure, a stamping process of an automobile sealing cover includes the following steps:

A. Blanking, punch out a standard circular metal sheet on the metal plate; the diameter of the metal sheet can be set according to the needs, and one of the stamping dies is used to stamp the metal plate. As shown in Figure 1.

B. Stretching: Use a punch to stretch the metal sheet, and stretch the middle of the metal sheet to form a round convex top, so that the metal sheet forms a hat shape. This is to achieve a better and smoother stretching. In this step, the stretching is divided into three processes for stretching, so that the metal shape process is stable and the stamping effect is better. As shown in Figure 2-4.

C, punching, punching the convex top position of the metal sheet, the hole diameter of the punching hole is smaller than the outer diameter of the convex top. As shown in Figure 5.

D, flanging, after punching a hole at the position of the dome, since the hole diameter of the punching hole is smaller than the outer diameter of the dome, there is still a bending edge, which is flanged to make the bend The sides are vertical, so that the round convex top forms an annular pier wall. As shown in Figure 6.

E, the inner step of the pier, use a punch to punch out a stepped step from the inner wall of the annular pier wall. As shown in Figure 7-9.

F, punching oil groove, use punching machine to punch out another oil groove on the inner wall of the annular pier wall, this oil groove connects the upper surface of the pier wall and the lower surface of the metal sheet; because the existing oil grooves are all milled out by milling machine, This processing method has high cost and long processing time. However, the stamping method is now used to process the oil tank, which can still meet the precision requirements, and the cost is low, the processing time is shortened, and manpower is saved. As shown in Figure 10.

G. Punching cover hole, evenly punch out multiple through holes on the surface around the outer ring of the metal sheet. Generally speaking, after the hole of the French cover is punched, the hole of the French cover is shaped and chamfered. As shown in Figure 11-12.

Between the above steps D and E, there is also a shaping step, which is to extrude and thicken the pier thickness of the annular pier wall, and then increase the height of the annular pier wall so that the pier thickness is correspondingly thinned. The above is the processing process of the entire automobile sealing cover on the punching machine.

In addition, this case also provides the mold components for processing the automobile sealing cover, the details are as follows:

The mold assembly for processing the automobile sealing cover includes an upper template 1 and a lower template 2, and multiple groups of lower molds 3 are arranged in sequence on the lower template 2. Each of the lower molds 3 has a different mold cavity 4, and multiple groups of upper molds 5 matched with the lower molds 3 are sequentially arranged on the lower surface of the upper template 1, and each upper mold 5 has a different die head. The upper mold plate 1 is connected with a driving member to drive it to move downward and make the die heads of each upper mold 5 enter the mold cavity 4 of the lower mold 3 so as to realize the processing of the sealing cap. The biggest feature of this mold assembly is that multiple stamping dies are installed on one template, and the upper template is driven uniformly by the driver, so that the multiple upper molds 5 of the upper template move uniformly to the lower mold 3 on the lower template, while different The mold has different mold cavities 4 and die heads, so that simultaneous stamping of multiple processes can be realized, and stamping of multiple processes can be completed in one action, with very high efficiency, low cost, and time saving. In this embodiment, the molds formed by combining the lower mold 3 and the upper mold 5 are respectively stamping sheet metal molds, stretching molds, punching molds, flanging molds, pier inner step molds, oil tank molds, punching covers Hole molds, plastic molds, etc. As shown in Figure 13.

Generally speaking, the number of the lower mold 3 and the upper mold 5 is 8-12. It can be set according to the needs of the processing procedure.

Claims (4)

1. A stamping process of an automobile sealing cap, characterized in that it may further comprise the steps: A. Blanking, punching out standard circular metal sheets on the metal plate; B. Stretching, use a punch to stretch the metal sheet, and stretch the middle of the metal sheet to form a round convex top, so that the metal sheet forms a hat shape; C. Punching, punching the convex top position of the metal sheet; D. Flanging, after punching a hole at the position of the domed top, there is still a bent edge, and the bent edge is flanged to make the bent edge vertical, so that the domed top forms a circular pier wall ; E, the inner step of the pier, use a punch to punch out a stepped step from the inner wall of the annular pier wall; F. Punch the oil groove, use a punch to punch out another oil groove on the inner wall of the annular pier wall, and the oil groove connects the upper surface of the pier wall and the lower surface of the metal sheet; G. Punching cover hole, evenly punch out multiple through holes on the surface around the outer ring of the metal sheet. 2. The stamping process of a kind of automobile sealing cover according to claim 1, characterized in that between the above-mentioned D step and the E step, there is also a shaping step, and the pier thickness of the annular pier wall is extruded and thickened, and then The height of the annular pier wall is raised so that the pier thickness is correspondingly thinned. 3. The stamping process of a kind of automobile sealing cover according to claim 2, characterized in that in the B step, the stretching is divided into three operations for stretching, so that the metal shape process is stable. 4. The stamping process of a kind of automobile sealing cover according to claim 1, 2 or 3, characterized in that in the G step, after punching the hole of the cover, the hole of the cover is reshaped and chamfered.