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九州体育 的基本成型工艺

网址:70707882@qq.com  2020-12-10  作者:admin    阅读:

九州体育 的基本成型工艺
Basic forming process of stamping parts
九州体育 成形原理:冲压是靠压力机和模具对板材、带材、管材和型材等,施加外力,使之产生塑性变形或分离,从而获得所需形状和尺寸的工件(九州体育 )的成形加工方法。
Forming principle of stamping parts: stamping is a forming processing method for sheet, strip, pipe and profile by applying external force by press and die to produce plastic deformation or separation, so as to obtain the required shape and size of the workpiece (stamping part).
工艺分类:冲压主要是按工艺分类,可分为分离工序和成形工序两大类。
Process classification: stamping is mainly classified by process, which can be divided into separation process and forming process.
分离工序(冲裁工序):其目的是使九州体育 沿一定轮廓线从板料上分离,同时保证分离断面的质量要求。分离工序:冲裁(落料、冲孔)、剪切、切口、切边、剖切。
Separation process (blanking process): its purpose is to separate the stamping parts from the sheet along a certain contour line, and ensure the quality requirements of the separation section. Separation process: blanking (blanking, punching), cutting, cutting, edge cutting, cutting.
图片
picture
冲裁时板料的变形过程
Deformation process of sheet metal during blanking
变形过程:
Deformation process:
模具间隙正常时,金属材料的冲裁过程可分三个阶段:
When the die gap is normal, the blanking process of metal materials can be divided into three stages
1)弹性变形阶段
1) Elastic deformation stage
板料产生弹性压缩,弯曲和拉伸等变形。材料在受到外力作用时产生变形或者尺寸 的变化,而 且能够恢复的变形叫做弹性变形。
The sheet metal has elastic compression, bending and stretching deformation. The deformation or size change of material under the action of external force, and the deformation that can be recovered is called elastic deformation.
2)塑性变形阶段
2) Plastic deformation stage
板料的应力达到屈服极限,板料开始产生塑性剪切变形。是指材料在外力作用下产而在外力去除后不能恢复的那部分变形。
When the stress reaches the yield limit, the sheet metal begins to produce plastic shear deformation. It refers to the deformation of material produced under the action of external force and can not be recovered after the removal of external force.
3)断裂分离阶段
3) Fracture separation stage
已成形的裂纹沿最大应变速度方向向材料内延伸,呈楔形状发展
The formed crack extends into the material along the direction of maximum strain velocity and develops in wedge shape

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