CN211727175U - Novel structure designed by combining poor punching conditions with requirements of punching process - Google Patents

Abstract

The utility model belongs to the technical field of cold stamping, and relates to a new design structure combining poor punching conditions with stamping process requirements, in particular to a design structure form that the position of a hole on a stamping part is very close to a contour, and the product design needs to be combined with the process requirements when part defect risks and production risks are caused; at one side close to the outline of the part, the outline of the part and the outline of the hole are combined into a whole; the utility model discloses on stamping die, the deburring function that the utilization needs the conventionality to set up has replaced the process of punching a hole, has saved cut-out press, saves the cost, gets rid of part facet characteristic, avoids appearing the weak design position of mould, avoids pressing the material area not enough, produces the quality defect that the hole warp. On the premise of improving the quality of parts and improving the production stability, the cost of the die is reduced.

Description

Novel structure designed by combining poor punching conditions with requirements of punching process

Technical Field

The utility model belongs to the technical field of cold stamping, a new bad punching condition combines punching press technology demand project organization is related to, and the position in hole is very close the profile on the concretely relates to stamping workpiece, when causing part defect risk and production risk, the product design need combine the design structural style of technology demand.

Background

When a conventional automobile stamping part is designed, a certain plane distance is required to be reserved from the edge profile of a hole, and the distance has a certain difference according to the material thickness and the material, for example, for a thin plate material with the material thickness smaller than 1mm, the process requirement avoiding distance is larger than 5-8 mm, and for a plate material with thicker thickness and higher strength, the value is reasonably increased. However, in the actual design requirement, often due to the structural limitation, the requirement cannot be met, and if the design is performed according to the conventional stamping process, the following risks occur: the pressing width is small, so that the pressing force is insufficient, and the hole is deformed; the mould structure is weak, very easily damages. Adversely affecting the production stability, the quality of the parts and the dimensional accuracy of the body in white.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at is just in order to structural design limitation, compromises the actual difficulty of product functional demand and stamping process, in synchronous engineering work, optimizes product local detail, gets rid of the connection face between hole and the profile, and part profile and hole combine together, realize the functional in hole with the outline, provide a new bad condition of punching a hole and combine stamping process demand project organization.

In order to solve the above technical problem, the present invention adopts the following technical solution, which is described below with reference to the accompanying drawings:

the new bad punching condition combines the punching process requirement to design a structure, and the outline of the part and the outline of the hole are integrated at one side close to the outline of the part.

The part is a common sheet stamping part, and the material thickness is not more than 4 mm.

The distance between the outline edge of the hole and the outline edge of the part is less than 8mm or less than 4 times of the thickness of the material.

In the stamping process, the trimming and punching are integrated, the easily damaged risk of a die is avoided on the basis of not influencing the use function of the hole, and the deformation risk of the hole is eliminated in the design stage.

Compared with the prior art, the beneficial effects of the utility model are that:

on a stamping die, a trimming function which needs to be conventionally set is utilized to replace a punching process, so that the punching die is saved, the cost is saved, the small plane characteristics of parts are removed, the weak design part of the die is avoided, and the quality defect that the material pressing area is insufficient and the hole is deformed is avoided. On the premise of improving the quality of parts and improving the production stability, the cost of the die is reduced.

Drawings

The invention will be further described with reference to the accompanying drawings:

FIG. 1 is a schematic illustration of a stamping with difficult to achieve hole features;

FIG. 2 is a fragmentary view at A of FIG. 1 showing trimming and punching, respectively;

FIG. 3 is a partial schematic view showing the deburring and punching combination integrating the outer profile of the part with the profile of the hole;

FIG. 4 is a schematic view of the minimum distance between the edge of the measuring hole and the outer contour of the part;

in the figure: 1. punching a contour line; 2. trimming the contour line during independent punching; 3. trimming the contour line when the outer contour of the part and the contour of the hole are integrated; 4. the minimum distance between the edge of the hole and the outer contour of the part is;

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

referring to fig. 1 and 2, the state that the small plane exists and trimming and punching of the stamping part are respectively performed is shown, the process is difficult to implement, and the quality of the part is poor.

The trimming contour line is a contour line generated by adopting a separation mode of cutting off a waste part in a stamping process, and is a product contour line under the condition of no further forming.

Referring to fig. 3, in order to combine the stamping requirement and avoid the structural design form of the defect risk, the punching requirement is combined in the stamping design, trimming and punching are combined, the outer contour of the part and the contour of the hole are combined into a whole, the weakness of the die structure and the deformation of the hole are avoided, the production stability is improved, the quality is improved, the die structure is simplified, and the die cost is reduced.

Referring to fig. 4, the distance from the edge of the hole to the edge of the profile is measured, and after the measurement, whether the hole is cancelled is determined, and whether the requirement of the stamping process can be met is judged by combining the material type, the strength and the material thickness. If the hole edge is too close to the outline, the strength of the corresponding position of the stamping die is weak, production risks and part defect risks occur, the function of the hole is further judged, whether special positioning requirements exist on one side close to the outline of the part, if the function of the hole is realized by utilizing the special-shaped outline, the functional requirements can be met, the outline and the outline of the hole can be integrated, and the trimming process is directly adopted during the design of the stamping process.

Claims (1)

1. A new bad punching condition combines punching press technology demand project organization, its characterized in that: at one side close to the outline of the part, the outline of the part and the outline of the hole are combined into a whole; the parts are common sheet stamping parts, and the material thickness is not more than 4 mm; the distance between the outline edge of the hole and the outline edge of the part is less than 8mm or less than 4 times of the thickness of the material.

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