Metal stamping parts processing, the hole is abnormal, and analysis of the reason is?

Metal stamping parts processing hole ware location changes, what is usually the cause of, today the author and we discuss together: 1) Reason for metal stamping parts processing, the location of the hole size is wrong, ( Thinning of the bending tensile) ； Different hole heart ( Bending height is not enough, blank slip, rebound, appear on the curved plane fluctuations) ； Bending line and two hole centerline is not parallel to the bending height less than the minimum bending height of parts present outward mouth shape after bending; Hole prone to deformation near the bending line. 2) Different countermeasures of metal stamping parts processing hole heart cause of measures: around to make sure that the bending height is correct; After correction wear the positioning pin and positioning plate; Reduce springback guarantee two parallel curved surface and plane degrees; Change process, after the first bending correction for punching. Presents the outward mouth shape bending countermeasures should ensure that minimum bending height H ( H p R + 2 t t R bend radius) material thickness ； Change the shape of metal stamping parts processing parts, in does not affect the use is less than the minimum bending height of the part. Near the bending line hole prone to deformation measures: when in the design of bending parts to guarantee from bending parts to the side of hole is apart from the X is greater than a certain value X (or 1. 5 - 2. 0) T t bend sheet thickness; An auxiliary hole in the curved parts design to absorb the bending deformation of stress, can prevent hole deformation near the bending line, generally USES the first bend after punching. 【 Relevant recommendation 】 Details: how much do you know the new energy automotive stamping parts? Details: sharing details of stamping processing industry: precision metal stamping parts figure how to draw, please be aware that this several steps