Punching machine for machining piston assemblies used for automobile brakes

[0027] Embodiment one

[0028] Picture 1-1 Schematic diagram of embodiment one for processing stamping machine for piston parts for automobile brakes, Figure 1-2 Partially enlarged top view schematic diagram of the lower mold of the stamping machine for the piston parts of the automobile brake, figure 2 It is a schematic diagram of the outer ring mold 6a of the lower mold in embodiment two, image 3 It is a schematic diagram of the inner ring mold 6b of the lower mold in embodiment two, Figure 4 It is a schematic diagram of the connecting key 6c of the lower mold in the second embodiment. like Picture 1-1 , Figure 1-2 , figure 2 , image 3 and Figure 4 As shown, what is provided in this embodiment is a stamping machine for processing piston parts for automobile brakes, including an upper body 1, a lower body 2, an upper mold base 3, a lower mold base 4, an upper mold 5, a lower mold 6, and a fixing plate 7. Side pressure block 8, limit sleeve 9, guide post 10, bearing platform 11 and thimble rod 12. The upper mold base 3 is fixed on the upper body 1; the lower mold base 4 is fixed on the load-bearing platform 11, and the lower mold base 4 has a hole for the relative movement of the thimble rod 12; The mold base 3 is fixedly connected, and the shaft is located at the root of the upper mold 5; the lower mold 6 includes an outer ring mold 6a, an inner ring mold 6b and a connecting key 6c, and the inner ring mold 6b has two ejector rods 12 for pushing The hole where the rod extends into, the lower mold 6 is placed between the side pressure block 8 and the lower mold base 4; the fixed plate 7 is fixed on the upper mold base 3, and the upper mold base 3 and the upper body are connected by a hexagon socket bolt on one side. 1 connection, one side is connected with the upper mold base 3 by hexagon socket bolts; the side pressure block 8 is fixed on the lower mold 6; the limit sleeve 9 is fixed on the outside of the guide column 10 and is located on the upper part of the load-bearing platform 11; The guide post 10 is fixed on both sides of the side pressure block 8 and the lower mold base 4; the load-bearing platform 11 is fixed on the lower body 2, and has a hole for the relative movement of the thimble rod 12; the thimble rod 12 has two Push rod, the push rod part is from the bearing table 11 to the lower mold 6, the thimble rod 12 runs through the lower body 2, the bearing platform 11, the lower mold base 4 and the lower mold 6, and passes through the bearing table 11, the lower mold base 4 and the lower mold 6 The provided holes perform relative movement and are fixed in the middle of the lower body 2 . The lower mold 6 includes an outer ring mold 6a, an inner ring mold 6b and a connection key 6c. The inner ring mold 6b is placed in the outer ring mold 6a and connected by a connection key 6c. The lower mold 6 is made of high-speed steel. The outer ring mold 6a has a circular shape as a whole, and has a first groove 6a1 and a second groove 6a2 inside. The first groove 6a1 and the second groove 6a2 are symmetrically opened. The outer diameter of the outer ring mold 6a is D, and the inner diameter is d , the value of D/d is in the range of 1.6 to 2.5, and the value of D/d in this embodiment is 1.8. The inner ring mold 6b is generally circular, and has a first notch 6b1 and a second notch 6b2 on the edge. The first notch 6b1 and the second notch 6b2 are opened symmetrically. The outer diameter of the inner ring mold 6b is d. The connection key 6c is in the shape of a triangle as a whole, with chamfered edges. The first groove 6a1 inside the outer ring mold 6a corresponds to the first notch 6b1 on the edge of the inner ring mold 6b, and the second groove 6a2 inside the outer ring mold 6a corresponds to the inner ring mold 6a. The second notch 6b2 on the edge of the mold 6b corresponds, and the two are connected by a connecting key 6c. The connecting key is divided into a first part 6c1 and a second part 6c2. The first part 6c1 is located in the groove, and the second part 6c2 is located in the notch. The vertical heights of the first part 6c1 and the second part 6c2 of the connecting key are equal.