Methods and steps of stamping die design. Analysis of stamping process of stamping parts. Stamping parts must have good stamping manufacturability in order to manufacture qualified stamping parts in the simplest and most economical way. The manufacturability analysis of stamping parts can be completed in the following ways: a. Read the part drawing; In addition to the shape and size of parts, it is also important to understand the requirements of parts accuracy and surface roughness. B analyze whether the structure and shape of the parts are suitable for stamping. ? C. Analyze whether the datum selection and dimensioning of parts are reasonable, and whether the accuracy of size, position and shape is suitable for stamping. ? D. Whether the surface roughness requirement of the section of the stamped part is too high. E. whether there is a large enough production batch. ? If the manufacturability of the parts is too poor, we should consult with the designers and put forward a plan to modify the design. If the production batch is too small, other production methods should be considered for processing. 2. Design of stamping process scheme and optimal process planning:? A. According to the shape and size of stamping parts, preliminarily determine the properties of stamping process, such as stamping, bending, stretching, bulging and reaming. ? B. check the deformation degree of each stamping method. If the deformation degree exceeds the limit deformation degree, the stamping times of this process should be calculated. ? C, according to the deformation characteristics and quality requirements of each process, arrange a reasonable stamping sequence. Attention should be paid to ensure that the deformation zone of each process is a weak zone, and the formed parts (including punching holes or shapes) do not participate in the deformation of subsequent processes. Polygon bending parts should be bent outward first and then inward, and necessary auxiliary processes, shaping, leveling and heat treatment should be arranged. ? D. On the premise of ensuring the accuracy of parts, positioning and feeding requirements are made according to production batches and blanks. Determine the reasonable process combination. ? E design and compare two or more technological schemes from the aspects of quality, cost, productivity, mold grinding and maintenance, mold life and operation safety, and select the best technological scheme. Initially determine the stamping equipment for each process. 3. Blank design and layout design of stamping parts:? A. According to the nature and size of stamping parts, calculate the blank size and draw the blank diagram. ?

B. According to the nature and size of the blank, design the layout diagram and calculate the material utilization rate. To design a variety of layout schemes, choose the best scheme through comparison. 4. Stamping die design:? A. Determine the die structure of each stamping process and draw the die sketch. ? B) Make a detailed structural design of the designated mold with 1-2 process, and draw the working diagram of the mold. The design method is as follows: Determine the die type: simple die, continuous die or compound die. ※.？ ※? Design of die working parts: calculate the cutting edge size and length of punch and die, and determine the structural form and connection and fixation mode of punch and die. ? Determine the positioning and limiting mode of the blank and design the corresponding positioning and limiting parts. Determine the way of pressing, discharging, ejecting and pushing, and design corresponding pressing plate, discharging plate and pushing block. ※. ※.？ Mold base design: including the design of upper and lower mold bases and guiding modes, and standard mold bases can also be selected. On the basis of the above work, draw the working drawing of the mould according to the proportion. ※. First, draw the blank with two-dot chain line, then draw the working part, then draw the positioning and limiting part, connect the above parts with the connecting part, and finally draw the pressing and discharging part at the appropriate position. ※. According to the specific situation of the mold, the above order can also be adjusted appropriately. ? The overall dimension, closing height, fit size and fit type of the mold should be marked on the working drawing. Manufacturing accuracy and technical requirements of mould shall be indicated on the working drawing. ※. The construction drawing shall be drawn according to the national drawing standards, with standard title bar and name list. If it is a blanking die, the layout should be drawn in the upper left corner of the working drawing. ? Calculate the die pressure center and check whether the pressure center coincides with the center line of the die handle. ※ If they are not consistent, modify the die result accordingly. ? Calculate the punching force, finally select the punching equipment, and check the relevant dimensions of the die and punching equipment (die clamping height, workbench, die handle installation dimensions, etc.). ).※.？ 5. Surveying and mapping most parts of the mold (the amount of work required to complete the drawings is equivalent to more than three A0 drawings), and the parts drawings are required to be drawn according to national drawing standards, with complete dimensions, tolerances, surface roughness and technical requirements marked. ? 6, fill in the stamping process specification card. ?

7. In the designed mold parts drawing, select two parts for processing technology analysis, formulate reasonable processing technology regulations, and fill in the processing technology regulations card. 8, according to the design content and design calculation to write a design specification.