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Step-by-step stamping forming method
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A technology of stamping and punching, applied in the field of step-by-step stamping and forming, to achieve the effects of improving forming accuracy and yield, reducing wrinkle defects, and ensuring controllability
Active Publication Date: 2021-06-25
SHANDONG UNIV
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[0005] The purpose of this disclosure is to provide a step-by-step stamping forming method and micro-parts for the defects existing in the prior art, to perform multi-step processing on micro-parts, and to use position-adjustable The spacer cooperates with the stepped hole structure to form an adjustable cavity, so that the shape of the cavity can always adapt to the required structure of step-by-step forming, so as to meet the requirement of adjusting the shape of the cavity without disassembling the mold, and overcome the wrinkles caused by one-time forming of a single feature Defects, reduce the influence of irregular metal flow on the surface of micro-parts, and use multi-step stamping to ensure the processing accuracy of micro-parts
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Embodiment 1
[0041] In a typical implementation of the present disclosure, such as Figure 1-Figure 9 As shown, a step-by-step stamping forming method is provided.
[0042] Include the following steps:
[0043] Construct forming die 3 and stamping mechanism;
[0044] There is a cavity inside the forming mold, and the material 2 is put into the cavity and formed under the action of the stamping mechanism;
[0045] The stamping mechanism includes a stamping output element and a stamping head. The stamping head moves under the action of the stamping output element, and the end acts on the material to deform and shape it under the constraints of the cavity. The stamping head includes the first punch 4 and the second punch. head 7;
[0046] The first through hole is arranged to communicate with the second through hole, the gasket 1 is located in the second through hole and cooperates with the first through hole 501 and the second through hole 502 to form a variable volume stepped hole cavity...
Embodiment 2
[0077] In another typical embodiment of the present disclosure, as shown in the figure, a step-by-step stamping forming method is proposed.
Embodiment 1
[0078] In conjunction with embodiment 1, specifically comprise the following steps:
[0079] Step 1: First punch the blank with the first round punch with a diameter of φ5 to form a part of the star-shaped outer contour and flange features to form a stepped structure.
[0080] The overall axial length of the second through hole is 2 mm, move the gasket to a position 0.75 mm away from the bottom of the first through hole, the first punch is displaced by 1.25 mm, and the axial length of the blank in the second through hole is 0.75 mm. mm.
[0081] Step Two: Using a second punch with a star profile, a star hole feature is formed.
[0082] At this time, the gasket moves down 0.5 mm along the axis of the second through hole, and the second punch moves 1 mm. The axial length of the blank in the second through hole is 1.25 mm. The star-shaped hole opened by the second punch 1 mm deep.
[0083] Step 3: Continue to use the second punch with star-shaped profile, the gasket moves down...
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Abstract
The invention provides a step-by-step stamping forming method, and relates to the field of stamping forming. Multi-step machining is performed on micro parts, and in the machining process of blind holes with relatively long stamping paths, a position-adjustable gasket is adopted to be matched with a stepped hole structure to form an adjustable cavity, so that the shape of the cavity always adapts to a structure required by step-by-step forming, the requirement for adjusting the shape of the cavity can be met without disassembling and assembling a die, the fold defect caused by single-feature one-time forming is overcome, the influence of irregular metal flowing on the surfaces of the micro parts is reduced, and the machining precision of the micro parts is guaranteed through multi-step stamping forming.
Description
technical field [0001] The present disclosure relates to the field of stamping forming, in particular to a step-by-step stamping forming method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the development trend of global product miniaturization and miniaturization, medium-scale non-axisymmetric parts (medium-scale parts refer to two parts with a size in the range of 1 to 10 mm) are widely used in electronic products, household appliances, automobiles and other fields . In the forming process of metal parts, due to the irregular flow of metal, there are often wrinkle defects in medium-sized parts, and usually because the feature size of parts is relatively small, these defects are not easy to be found, and often cause sudden failure of the machine, resulting in Severe personal injury and property damage. [0004] The inventors...
Claims
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Application Information
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