Supporting three-step composite stamping die
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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Support three-step composite stamping die Supporting three-step composite stamping die
I. Preface The support seat shown in Figure 1 is an important sheet metal stamping on a new type of equipment; the application data is 1Cr18Ni9Ti steel sheet; the data thickness is δ=1.5mm. The stamping characteristics of the part are: high data yield strength; large size After the blank is bent into a U-shaped piece; it is necessary to bend both sides inward; and punch out the small hole of ?φ20. About this typical U-shaped piece; production in one-piece or small batch and skill requirements When the height is not high; the strip can be formed on the folding machine; the small hole is made on the drill bed; otherwise, it should be formed by die. According to the common process; the punching process of U-shaped perforated parts; 3 sets of molds for forming and punching; this method has low production power, high process capacity and poor economic efficiency. The three-step composite stamping die is now used; the stamping operation of the support can be completed efficiently and with high quality. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Second, the mold layout and operation principle 1. The layout of the three-step composite stamping die of the mold layout support seat is shown in Fig. 2; the primary working component is composed of the fixed wedge 7, the die 10, the movable wedge 12, the forming punch 14 and the punching punch 15; and the guide pillar guide is used for guiding. The standard formwork of the way.
2. The working principle of the three-step composite stamping die of the working principle support seat is [1, 2]: when the mold is in the upper limit waiting position; the blank strip is placed on the blanking die 10 and the forming punch 14; The plate 8 and the positioning pin 17 are positioned. When the mold is working; the upper mold goes down with the press slider; firstly; under the effect of the spring 2; the pressing plate 16 presses the blank; the fixed wedge 7 and the die 10 complete the blank together The blanking process is completed; the punching punch 15 is completed; the punching process of the φ20 small hole follows the continuous sliding of the press slider; the fixed wedge 7 applies a downward U-shaped meandering to the blank, together; the fixed wedge 7 pushes the movable wedge 12 moving in the middle of the mold; bending the blank inward; finishing the end of the workpiece forming process. End; the mold reaches the bottom dead center and moves upward with the opening of the slider; the fixed wedge 7 and the punching punch 15 are separated from the blanking die 10 and Forming the punch 14; the spring 13 reverts to the movable wedge 12 to move to both sides of the mold. At this point; the formed workpiece 5 can be taken out of the mold; the stamping operation is completed.
Third, the primary work parts depiction 1. Punching punch punching punch data is Cr12MoV steel; heat treatment hardness is 58-62HRC. Because the punching diameter is larger; therefore, the punch is attributed to the slender rod; the bearing and the unstable zigzag strength check should be carried out during the drawing. Strive to improve the strength and stiffness of the punch; the punch can be depicted as a stepped shaft or a punch sleeve.
2. The forming punch forming punch can be made of T10A steel; the heat treatment hardness is 56-60HRC. The shape of the forming punch is messy; the wall thickness is uneven; therefore, it must be cautious in heat treatment. In actual operation, pre-cooled quenching or inner hole packing asbestos can be used. Rope to reduce heat treatment deformation and cracking tendency of the workpiece.
3. The die blank die can be arranged in a mosaic layout; after the die is worn; only the insert is removed; then the appropriate gasket is added; the convex and concave voids can be maintained. T10A steel used; heat treatment hardness 56 ~ 60HRC; fixed with screws and pins, 45 steel for the body; heat treatment hardness 28 ~ 32HRC. This can reduce valuable information; improve economic efficiency.
4. The fixed wedge fixed wedge is an important working part; it has two effects. When the blank is blanked, it can be used as a punch, and the movable die can be moved to the middle of the mold; the end of the workpiece is formed. The fixed wedge has a high frequency; Strong force; recommended to use T10A steel; and hardened to 56 ~ 60HRC; to achieve higher strength, wear resistance and resistance.
5. The movable wedge wedge wedge is made of 45 steel; the heat treatment hardness is 43~48HRC; the demand has outstanding wear resistance and motion stability.
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