One. Calculation of material cost: total material weight * material price-(total material weight-net product weight) * waste recycling price.
(1) Calculation of unit weight: (1) Cylindrical shape: πr∧2 * density * 10∧-6 ② Stamped sheet: length * width * thickness * density * 10∧-6.
(2) Blank size of stamping parts: the thickness of stamping parts (t) single-sided blank T ≤ 0.5 mm1.2mm 0.5mm < t ≤1.5mm1.5mm t >1.5mm 2.0mm.
(3) Density of common materials: material name density g/cm3(t/m3), iron 7.8 steel 7.85 aluminum 2.7 red copper 8.9 lead brass 8.5 fierce copper 8.5.
⑷ Price of common materials: name of materials including tax (17%) price (yuan/kg) Single beam iron 6.2 stainless steel 18 aluminum 20 red copper 76 lead brass 5 1 fierce copper 85.
5. Scrap recycling price: You can find today's price online.
2. Stamping cost: A product often consists of multiple processes, and each process may use a press with different tonnage. The punching prices of die-cutting machines with different tonnage are listed as follows: punch tonnage (t) punching fee (yuan/time). 16t 0.00625t 0.00835t 0.0 1045t 0.0 1260t 0.0 1580t 0.020 1 10t 0.02565438+。 Axis) ￥0.060 250T (biaxial) ￥0.090 continuous die, and the stamping cost above tonnage is less, such as 250T (biaxial) -0.050.
3. Processing fee: the hourly fee for the types of processing tools (RMB). Traditional machine tools (turning, milling, surface grinding, internal and external grinding, etc. ) 30 fast wire cutting 40 NC machining 60 wire cutting (Hitachi) 100.