By Isakov, Edmund
A different and convenient source, this e-book will permit clients to calculate valuable speeds, feeds, and required machining strength in an effort to maximize the productiveness of slicing. offering info on formulation and their purposes in a concise and obviously prepared layout, it describes mechanical houses of the preferred paintings fabrics, akin to steels, forged irons, and nonferrous alloys. And it bargains a number of formulation for calculating speeds, feeds, slicing forces, and machining energy. what is extra, useful examples of calculating the diversity of such slicing parameters will make this a helpful resource of data in education and perform.
desk of Contents
1. Mechanical homes of labor fabrics
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Extra info for Engineering Formulas for Metalcutting - Presented in Customary U.S. and Metric Units of Measure
13. 6. The ultimate tensile strength for the AISI type 304 stainless steel with a hardness of 149 HB is calculated by the formula shown in the 2nd row. For the same stainless steel with the hardness of 240 HB, the ultimate tensile strength is calculated by the formula shown in the 3rd row. The 2nd row: σ = 457 HB + 16910 = 457 · 149 + 16910 = 85,003 psi The ultimate tensile strength is 85,000 psi (Ref. 4, p. 274) 23 Mechanical Properties of Work Materials The formula provides an accuracy of 85, 000 · 100% ≅ 100% 85, 003 The 3rd row: σ = 534 HB – 16280 = 534 · 240 – 16280 = 111,880 psi The ultimate tensile strength is 110,000 psi (Ref.
12. The ultimate tensile strength for C26000 wrought copper alloy (one of C2xxxx series) with a hardness of 82 HRB is calculated by the formula shown in the 1st row. The ultimate tensile strength for C48200 wrought copper alloy (one of C48xxx series) with a hardness of 75 HRB is calculated by the formula shown in the 7th row. The first row: σ = 933 HRB – 1990 = 933 · 82 – 1990 = 74,516 psi The ultimate tensile strength is 78,000 psi (Ref. 6, p. 5% 78, 000 The 7th row: σ = 546 HRB + 27820 = 546 · 75 + 27820 = 68,770 psi The ultimate tensile strength is 67,000 psi (Ref.
44 2 Note: if the width of cut is greater than the cutter radius (w > R), the centerline of the cutter is located on the workpiece. Therefore, no adjustment to the feed rate is needed. 8). 4 ipm).