CN117161211A - Forming assembly and forming method - Google Patents

Abstract

The application provides a molding assembly and a molding method. The molding assembly includes: a forming die including a forming surface, the forming surface being matched with the shape of the part, the sheet being capable of being pressed against the forming surface to form the shape of the part; and the supporting piece is fixedly connected with the forming die and is used for supporting the forming die. According to the molding assembly, the molding die is arranged, so that an accurate molding surface and structural support are provided in the progressive molding process, accurate molding of complex structural features is realized, and the manufacturing precision and efficiency of parts are improved.

Description

Forming assembly and forming method

Technical Field

The application relates to the field of sheet metal part machining, in particular to a forming assembly and further relates to a forming method.

Background

The progressive forming technology combines the traditional plastic forming technology with the rapid prototyping technology, introduces the idea of layered manufacturing in the rapid prototyping technology, disperses a complex three-dimensional digital model into contour lines along the height direction, generates processing tracks on each broken surface layer, and enables a forming device to move along the processing tracks under the control of a computer so as to gradually and locally form the sheet instead of integrally deforming, and finally forms the sheet into a target product.

However, at present, the progressive forming adopts simple support or no mould support, so the forming precision is lower and the dimensional deviation of parts is larger. And the sheet metal parts, in particular to sheet metal parts on automobiles, are high-precision thin-wall parts with complex characteristics, and have large molding difficulty and high precision requirements. The existing incremental forming supporting structure is difficult to meet the requirements of trial-manufacturing precision and efficiency of automobile precise sheet metal parts.

Disclosure of Invention

The present application aims to provide a molding assembly and a molding method to solve or alleviate at least part of the problems mentioned in the background art.

To achieve one of the foregoing objects, according to one aspect of the present application, there is provided a molding assembly for progressively molding a sheet into a part, the molding assembly comprising: a forming die including a forming surface, the forming surface being matched with the shape of the part, the sheet being capable of being pressed against the forming surface to form the shape of the part; and the supporting piece is fixedly connected with the forming die and is used for supporting the forming die.

In addition to or as an alternative to one or more of the above features, in a further embodiment, the forming die is provided with a wire groove, the wire groove having an extension shape matching the contour of the part.

In addition to or as an alternative to one or more of the features described above, in further embodiments the support comprises: the connecting plate is fixedly connected with the forming die; a base fixed at a machining position; and the support column is fixedly connected between the connecting plate and the base.

In addition to or as an alternative to one or more of the above features, in a further embodiment the forming die comprises a first connection face in contact with the connection plate, the connection plate comprising a second connection face in contact with the forming die, the first connection face covering the second connection face.

In addition to or as an alternative to one or more of the above features, in a further embodiment the first connection face and the second connection face have the same profile run.

In addition to, or as an alternative to, one or more of the above features, in further embodiments the shaping mold is made of a wood substitute material.

To achieve one of the foregoing objects, according to another aspect of the present application, there is provided a molding method for progressively molding a sheet into a part, the method comprising: step S1: machining a molding surface of a molding die and machining a supporting piece according to the shape of the part; step S2: fixedly connecting the forming die with the supporting piece; step S3: paving the plate on the molding surface, and pressing the plate against the molding surface to mold the shape of the part; step S4: cutting the edges of the formed sheet material to obtain the part.

In addition to one or more of the above features, or as an alternative, in a further embodiment, the step S1 further comprises machining a wire chase on the forming mold such that an extended shape of the wire chase matches a contour of the part.

In addition to, or as an alternative to, one or more of the features described above, in further embodiments the method further comprises: step S5: and placing the part on the forming die, and detecting the forming precision of the part according to the wire slot.

In addition to, or as an alternative to, one or more of the features described above, in further embodiments the method further comprises: step S7: judging whether the size deviation exists in the part, if so, executing a step S8; step S8: and (5) manually shaping the part by using the forming die.

According to the molding assembly and the molding method, the molding die is arranged, so that an accurate molding surface and structural support are provided in the progressive molding process, the accurate molding of complex structural features is realized, and the manufacturing precision and efficiency of parts are improved.

Drawings

The present disclosure will become more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the application. In the figure:

FIG. 1 is a schematic view of a molding assembly according to one embodiment of the present application;

FIG. 2 shows a schematic view of the support of FIG. 1;

FIG. 3 shows a schematic view of the forming die of FIG. 1;

fig. 4 shows a schematic view of a part placed on a forming die.

Detailed Description

The application will be described in detail hereinafter with reference to exemplary embodiments in the accompanying drawings. It should be understood, however, that this application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art.

Furthermore, to any single feature described or implied in the embodiments mentioned herein, or any single feature shown or implied in the figures, it is easy for a person skilled in the art to proceed with appropriate combination or deletion of these features (or equivalents thereof), thereby obtaining still further embodiments of the application that may not be directly mentioned herein, without departing from the scope of the application.

Fig. 1 is a schematic view of a forming assembly 100 according to one embodiment of the application, the forming assembly 100 being used in a progressive forming process. It can be seen that the molding assembly 100 includes a molding die 110 and a support 120 for supporting the molding die 110. The forming die 110 includes a forming surface 111, and the forming surface 111 has a shape matching that of the target part 200 (e.g., a sheet metal part shown in fig. 4). In progressive forming, the original plate is placed on the forming die 110, and then the pressing device presses one side of the plate facing away from the forming die 110, so that the plate is attached to the forming die 110 to be formed successively. The forming die 110 can be formed by processing a wood substitute material, and the wood substitute material is easy to cut, so that the forming die is quickly manufactured, has high efficiency, is light in structure and is easy to transport.

Under this kind of arrangement, the shaping subassembly that this article was mentioned provides shaping structural support for the incremental forming process, has restricted size abrupt change excessive pressure, has reduced the shaping degree of difficulty of complicated sheet metal component, has improved shaping efficiency to guaranteed the accurate shaping of complicated structural feature, showing the shaping precision that has improved.

Further modifications to the molding assembly will be introduced below by way of example to further improve its efficiency, reliability or other improvements.

Fig. 2 shows a schematic view of a support 120, the support 120 comprising a connection plate 121, a support column 123 and a base 122. Registration pin holes 1221 and bolt holes 1222 may be provided in the base 122 to accurately locate and secure in the machining location. The connecting plate 121 is fixedly connected with the forming mold 110, for example, glue bonding or other fixed connection methods can be adopted. At the connection site, the forming die 110 includes a first connection surface 112 (as shown in fig. 3) in contact with the connection plate 121, the connection plate 121 includes a second connection surface 1211 in contact with the forming die 110, and the first connection surface 112 covers the second connection surface 1211, for example, may be retracted inward from the contour of the first connection surface 112 by a certain distance to avoid the connection plate 121 from exceeding the outer contour of the forming die 110 to interfere with the plate forming. In addition, the second connecting surface 1211 may be designed to have the same profile orientation as the first connecting surface 112, e.g., the profiles of the second connecting surface 1211 and the first connecting surface 112 are similar to provide adequate support for the forming die 110. The supporting column 123 may be fixedly connected between the connecting plate 121 and the base 122 to raise the height of the forming mold 110, and the height of the supporting column 123 may be designed according to the size of the target part 200 to reserve a certain safety distance, so as to avoid the pressing tool from striking the base 122 and other structures. The support 120 can be formed by adopting 45 steel combined machining, so that the cost is low, the materials are easy to obtain, and the manufacturing cost of the formed assembly can be reduced.

Fig. 3 shows a schematic view of a molding die 110, wherein the molding die 110 is provided with a plurality of wire grooves 113 having an extension shape matching the contour of the part 200, for example, as shown in fig. 3, the wire grooves 113 include a first wire groove 1131 matching the contour of the outer edge of the part 200, a second wire groove 1132 matching the contour of the inner edge of the part 200, and a third wire groove 1133 matching the circular hole on the part. After molding, as shown in fig. 4, the part 200 may be placed on the molding die 110, and then the molding accuracy is checked according to the wire grooves 113, so that the molding die 110 may function as a gauge for the part 200, eliminating the need for an additional gauge. When dimensional deviations exist, manual shaping can be performed directly on the forming die 110 without reworking, thereby reducing scrap rates, shortening the manufacturing cycle of the part 200, and improving the manufacturing efficiency of the part 200.

The method for incremental forming of the part 200 using the forming assembly 100 described above is as follows:

step S1: the molding surface 111 of the molding die 110 is machined according to the shape of the part 200, and the support 120 is machined.

Step S2: the molding die 110 is fixedly connected with the support 120. The connection plate 121 may be cut using 45 steel, and after cleaning the first connection surface 112 and the second connection surface 1211, the two may be bonded using glue.

Step S3: the sheet is laid on the molding die 110 and pressed against the molding surface 111 of the molding die 110 to be molded into the shape of the part 200.

Step S4: cutting the edges of the formed sheet to obtain the part 200.

According to this method, the plate is supported by the forming die 110 during the progressive forming process and completely conforms to the forming surface 111 of the forming die 110, and particularly for the target precise thin-wall part 200 with complex characteristics, the plate can be precisely formed against the forming surface 111, thereby improving the forming precision of the part 200.

Step S1 further includes machining the wire groove 113 on the forming mold 110, so that an extension shape of the wire groove 113 matches a contour of the part 200, and the wire groove 113 can be used to check a forming deviation of the part 200. Thus, the method may further comprise:

step S5: the part 200 is placed on the molding die 110, and the molding accuracy of the part 200 is detected from the wire grooves 113.

Step S7: judging whether the part 200 has a dimensional deviation, if so, executing step S8;

step S8: part 200 is shaped manually using forming die 110.

With this arrangement, the precision of progressively formed parts is effectively improved, the forming efficiency is improved, and the precision inspection and manual shaping can be directly performed on the forming assembly 100 after forming, thereby expanding the functions of the forming assembly 100 and improving the practicality of the forming assembly 100.

The above examples mainly illustrate the molding assembly and molding method of the present application. Although only a few embodiments of the present application have been described, those skilled in the art will appreciate that the present application can be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the illustrated examples and embodiments are to be considered as illustrative and not restrictive, and the application is intended to cover various modifications and substitutions without departing from the spirit and scope of the technical solutions of the application.

Claims (10)

1. A forming assembly for progressively forming a sheet into a part (200), the forming assembly (100) comprising:

a forming die (110) comprising a forming surface (111), wherein the forming surface (111) is matched with the shape of the part (200), and a plate material can be pressed against the forming surface (111) to form the shape of the part (200); and

and the supporting piece (120) is fixedly connected with the forming die (110) and is used for supporting the forming die (110).

2. The molding assembly according to claim 1, characterized in that a wire groove (113) is provided on the molding die (110), and the extending shape of the wire groove (113) matches the contour of the part (200).

3. The forming assembly of claim 1 or 2, wherein the support (120) comprises:

a connecting plate (121) fixedly connected with the molding die (110);

a base (122) fixed at a machining position; and

and the support column (123) is fixedly connected between the connecting plate (121) and the base (122).

4. A molding assembly according to claim 3, wherein the molding die (110) comprises a first connection face (112) in contact with the connection plate (121), the connection plate (121) comprising a second connection face (1211) in contact with the molding die (110), the first connection face (112) covering the second connection face (1211).

5. The molding assembly of claim 4, wherein the first connection surface (112) and the second connection surface (1211) have the same profile run.

6. The molding assembly according to claim 1 or 2, characterized in that the molding die (110) is made of wood substitute material.

7. A forming method for progressively forming a sheet into a part (200), the method comprising:

step S1: machining a molding surface (111) of a molding die (110) according to the shape of the part (200), and machining a support (120);

step S2: fixedly connecting the forming die (110) with the support (120);

step S3: paving the plate material on the molding surface (111) and pressing the plate material against the molding surface (111) to form the shape of the part (200); and

step S4: cutting the edges of the formed sheet material to obtain the part (200).

8. The method of claim 7, wherein step S1 further comprises machining a wire chase (113) on the forming die (110) such that an extended shape of the wire chase (113) matches a contour of the part (200).

9. The method of claim 8, wherein the method further comprises:

step S5: the part (200) is placed on the forming die (110), and the forming precision of the part (200) is detected according to the wire grooves (113).

10. The method according to claim 9, wherein the method further comprises:

step S7: judging whether the part (200) has a dimensional deviation or not, if so, executing a step S8;

step S8: -shaping the part (200) manually with the shaping mould (110).