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The Plane Blank Pressing Semi-fine-blanking Process Paramete Optimization and Experimental Study

Author: SunChengLiang
Tutor: DengMing
School: Chongqing University of Technology
Course: Materials Processing Engineering
Keywords: The plane pressure side semi - fine blanking Forming mechanism Finite Element Simulation Parameter optimization
CLC: TG386
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 0
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Abstract


The conventional blanking blanking higher efficiency and lower cost, but the resulting contours of the workpiece surface quality is poor; ring gear gag the fine blanking Although quality contour surface, but higher mold manufacturing precision requirements, and equipment investment. Plane blank half effective solution accuracy requirements between the workpiece between the ordinary punching and ring gear gag fine blanking, fine blanking process. Plane hem semi-fine blanking between conventional blanking and fine blanking ring gear gag a semi-fine blanking process, manufacturing, the use of lower-cost, higher part quality, can be widely used in a certain precision and The surface roughness of the plate-shaped contour part of the processing. But the current research issues related to the process in-depth research side half of the plane pressure fine blanking process rules and process parameters, in order to promote the application of this technology. Following the plane pressure side half a fine blanking forming Theoretical analysis established on the basis of the the flat hem half of fine blanking finite element simulation model, a finite element analysis; design, manufacture semi-fine blanking experiment mold plane hem, physics experiments, research plane pressure side of the forming mechanism of semi-fine blanking process materials; material deformation zone current law; the workpiece contour surface flow line and hardness distribution; BHF, counter force, material plastic, relatively blanking The influence of the clearance process parameters on the forming quality. The purpose of these studies is to solve half of the flat hem fine blanking parameter optimization problem, and to determine the flat hem material scope of application of the semi-fine blanking process and sheet thickness. Finally, the cross-section of the semi-precision stamping on flat-hem microscopic state analysis, the process of forming surface microstructure. By finite element simulation and physical experiments, the outcome of the application value: flat pressure side of the semi-fine blanking process is much higher than the ordinary the blanking process manufacturing accuracy; plasticity of the material itself, the relative blanking clearance of the workpiece contour The influence of the surface quality of the BHF and counter force to the second; mold relative blanking the smaller the gap, the better the plasticity of the material, workpiece contour surface with bright proportion of the greater; same contour surface bright band The proportion required BHF and counter force with the thickness of the sheet metal and plastic. The research topics on the practical application of engineering guidance and reference value.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Cold stamping process
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