| 单词 | rake angle |
| 释义 | > as lemmasrake angle b. The angle made between an edge or face of a tool, esp. a cutting tool, and some line or plane, often a line which is perpendicular to the surface of the work. Also angle of rake, rake angle. ΘΚΠ society > occupation and work > equipment > cutting tool > [noun] > cutting part of > blade or edge of > inclination of belly?1790 pitch1875 rake1888 1888 Lockwood's Dict. Mech. Engin. 276 Rake. (1) A term usually applied to signify the angles of metal turning tools, as side rake, front rake, &c. (2) The amount of forward angle, or pitch of saw teeth. 1903 W. H. Van Dervoort Mod. Machine Shop Tools xv. 198 The cutting edge of the lathe tool..has what we term an angle of clearance A and an angle of rake B. 1903 W. H. Van Dervoort Mod. Machine Shop Tools Index 550/1 Rake angles. 1923 T. R. Shaw Mechanisms of Machine Tools i. 71/1 With a flat top face either so much metal has to be removed that the tool is weakened or the rake angle must be so slight that there would be no proper cutting action. 1964 S. Crawford Basic Engin. Processes v. 119 Rake angles influence chip formation, tool wear, cutting force, surface finish, and permissible cutting speed. 1992 Mech. Products & Tools July 1305/3 The rake of the horizontal rule can be varied for work in ink and the rule slid from left to right for measurement from one fixed point to another. < as lemmas |
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