CN105382107A - Sheet material curved surface forming stamping die - Google Patents

Abstract

The invention relates to the technical field of molds for forming curved surfaces, in particular to a stamping mold for forming curved surfaces of sheet materials, comprising a punch (1) and a die (2), the punch (1) is located above the die (2), and the punch The stamping surfaces of the die (1) and the die (2) are both curved surfaces with radians, the stamping surfaces of the punch (1) and the die (2) mesh with each other, and the die (2) is provided with grooves along the transverse direction (3), the thickness of the punch (1) is smaller than the groove width of the groove (3), the die (2) is fixed, the punch (1) moves longitudinally, the punch (1) and the die (2) The same width; compared with the prior art, the present invention has a novel and simple structure and a reasonable design, which can simplify the processing complexity of the curved plate. The forming method finally completes the processing of high-precision workpieces, greatly reducing production costs.

Description

Sheet metal surface forming stamping die

[technical field]

The invention relates to the technical field of curved surface forming processing dies, in particular to a sheet metal curved surface forming stamping die.

[Background technique]

At present, for the processing of curved sheet metal workpieces, the traditional method is to use a linear punch and a linear concave stamping die for forming, and then use the subsequent process to assist the processing to achieve the forming of the target workpiece. This production method is inefficient, and the quality of the bent plate cannot be guaranteed. At present, the multi-point forming method is mostly used, which is characterized in that multiple punches arranged in a certain order are adjusted up and down to construct the curved surface shape of the plate product, and the plate product is completed by moving up and down. of molding. However, this method is only suitable for small batches and cannot be mass-produced, and the production cost is too high and the processing is relatively complicated, which cannot meet the strategic needs of sustainable development of manufacturing industries such as automobiles, aircraft, and ships.

[Content of the invention]

The purpose of the present invention is to solve the above-mentioned deficiencies and provide a sheet metal curved surface forming stamping die, which can simplify the processing complexity of the curved sheet metal, realize the bending deformation of the sheet metal by controlling the longitudinal movement range of the punch, and cooperate with multi-pass progressive forming method, and finally complete the processing of high-precision workpieces, greatly reducing production costs.

In order to achieve the above purpose, a sheet metal curved surface forming stamping die is designed, including a punch 1 and a die 2, the punch 1 is located above the die 2, and the punching surfaces of the punch 1 and the die 2 are curved The curved surface of the punch 1 and the stamping surface of the die 2 mesh with each other, the die 2 is provided with a groove 3 along the transverse direction, the thickness of the punch 1 is smaller than the groove width of the groove 3, the The die 2 is fixed, and the punch 1 moves longitudinally.

The male die 1 has the same width as the female die 2 .

The stamping method of the sheet material curved surface forming stamping die includes the following steps: fixing the die 2 on the operating platform, placing the sheet material workpiece between the punch 1 and the die 2, and the punch 1 is driven by the hydraulic lifting device along the Longitudinal movement, punching the workpiece, by adjusting the movement of the punch 1 to control the degree of engagement between the punch 1 and the die 2, and relying on the radian of the punch 1 and the die 2 to control the bending curvature of the sheet workpiece, and then through multiple The step-by-pass incremental forming method is used to bend the workpiece into the target three-dimensional curved surface.

Compared with the prior art, the present invention has the following advantages:

(1) The stamping surface of the punch and the die forms a certain arc and can engage with each other, so that the workpiece is bent and formed naturally;

(2) The punch and the die have the same width, and the thickness of the punch is smaller than the groove width of the die, so that the plate can be prevented from being punched out by the die and the punch, and the target workpiece is smooth;

(3) It can simplify the processing complexity of the curved plate, realize the bending deformation of the plate by controlling the longitudinal movement range of the punch, cooperate with the multi-pass progressive forming method, and finally complete the processing of high-precision workpieces;

(4) Control the meshing degree of the punch and die by adjusting the movement amount of the punch, and at the same time rely on the radian of the punch and die to realize the control of the bending curvature of the plate;

(5) It can be applied to mass production of products such as large-scale ship molded line outer panels and aircraft outer panels, which can simplify processing and greatly reduce production costs.

[Description of drawings]

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the side structure schematic diagram of the present invention;

Fig. 3 is the front structure schematic diagram of the present invention;

Among the figure: 1, punch 2, die 3, groove.

[detailed description]

Below in conjunction with accompanying drawing, the present invention will be further described as follows:

As shown in accompanying drawings 1 to 3, the present invention provides a sheet metal curved surface forming stamping die, comprising a punch 1 and a die 2, the punch 1 is located above the die 2, the punch 1 and the die 2 The stamping surfaces are all curved surfaces with radians. The stamping surfaces of the punch 1 and the die 2 mesh with each other. The die 2 is provided with a groove 3 along the transverse direction. 1 has the same width as the die 2, the die 2 is fixed, and the punch 1 moves longitudinally.

The stamping method of the sheet material curved surface forming stamping die includes the following steps: fixing the die 2 on the operating platform, placing the sheet material workpiece between the punch 1 and the die 2, and the punch 1 is driven by the hydraulic lifting device along the Longitudinal movement, stamping processing of the workpiece, by adjusting the movement of the punch 1 to control the degree of engagement between the punch 1 and the die 2, and relying on the radian of the punch 1 and the die 2 to control the bending curvature of the sheet workpiece, and then through multiple The step-by-pass incremental forming method is used to bend the workpiece into the target three-dimensional curved surface.

In the present invention, the stamping surfaces of the punch and the die form a certain radian and can engage with each other; the punch and the die have the same width, and the thickness of the punch is smaller than the groove width of the die. The mold design can simplify the processing complexity of the curved plate, and realize the bending deformation of the plate by controlling the longitudinal movement range of the punch, and cooperate with the multi-pass progressive forming method to finally complete the processing of high-precision workpieces.

The present invention is not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the present invention. within the scope of protection.

Claims (3)

1. a Sheet Metal Surface shaping and punching mould, it is characterized in that: comprise punch (1) and die (2), described punch (1) is positioned at the top of die (2), described punch (1) is the flexure plane of radian with the stamping surface of die (2), described punch (1) engages each other with the stamping surface of die (2), described die (2) is horizontally arranged with groove (3), the thickness of described punch (1) is less than the groove width of groove (3), described die (2) maintains static, and described punch (1) moves longitudinally.

2. Sheet Metal Surface shaping and punching mould as claimed in claim 1, is characterized in that: described punch (1) is identical with the width of die (2).

3. the process for stamping of Sheet Metal Surface shaping and punching mould as claimed in claim 1 or 2, it is characterized in that, comprise the following steps: die (2) is fixed on the operational platform, sheet material workpiece is placed between punch (1) and die (2), punch (1) moves longitudinally under the drive of hydraulic lift, punch process is carried out to workpiece, by the degree of engaging of adjustment punch (1) amount of movement control punch (1) with die (2), rely on the radian of punch (1) and die (2) simultaneously, control the bending curvature of sheet material workpiece, with after be bent into target three-dimension curved surface workpiece through multi-pass progressive molding method.