Press and Hydraulic Machine Selection
冲床与液压机设备选用
标签：冲床吨位, 曲轴冲床, 液压机, 行程速度
普通落料弯曲选用机械曲轴冲床（高行程速度、效率高）；深拉深与精压宜用液压机（匀速、可调保压）。吨位按 F = L×t×τ 估算（L 为冲裁周长、t 为料厚、τ 为抗剪强度，铜约 200–250 MPa），并加 20% 安全余量。台面需大于模具外廓 50 mm 以上。
Use a mechanical crank press for blanking and bending (high speed, high efficiency); choose a hydraulic press for deep drawing and coining (constant speed, adjustable dwell). Estimate tonnage by F = L×t×τ (L = cut length, t = thickness, τ = shear strength, ~200–250 MPa for copper) plus a 20% safety margin. The bed must exceed the die footprint by over 50 mm. ---