| 单词 | lapping machine |
| 释义 | > as lemmaslapping machine 3. The process of forming into laps; attributive in lapping cylinder, lapping machine (cf. lap n.3 Compounds 1). ΚΠ 1825 ‘J. Nicholson’ Operative Mechanic 381 The doffing-plate continually strips the doffer cylinder of the carded cotton, which it delivers upon the lapping cylinder in one continuous web of about 18 inches wide. 1851 L. D. B. Gordon in Art Jrnl. Illustr. Catal. p. iv**/1 The web of cleaned cotton..is passed through a lapping machine. lapping machine a. The action or process of grinding or polishing on a ‘lap’. Also attributive, as lapping machine, lapping plate. ΘΚΠ society > occupation and work > industry > working with tools or equipment > [noun] > other tools or equipment filinga1398 shovellingc1440 stamp1598 routing1846 stropping1850 beetling1859 screwdriving1864 lapping machine1877 lapping plate1877 side milling1878 broaching1888 hobbing1930 the world > matter > light > reflection > [noun] > lustre or shine from reflected light > making reflective or lustrous glossing1875 lapping1877 1877 G. E. Gee Pract. Gold-worker 178 Lapping..is a distinct process of finishing jewellery. 1879 Cassell's Techn. Educator (new ed.) IV. 350/2 ‘Lapping’..consists in grinding small facets such as those cut on a diamond to bring up its lustre, and which are cut on the gold for the same reason. 1886 Ld. Walsingham & R. Payne-Gallwey Shooting (Badminton Libr. of Sports & Pastimes) I. iv. 69 A barrel..undergoes three distinct stages, viz.: rough-boring; fine-boring; and polishing or lapping. 1907 J. V. Woodworth Grinding & Lapping ii. 65 (caption) Flat cast iron lapping plate. 1907 J. V. Woodworth Grinding & Lapping ii. 68 For lapping small thread gages a lapping machine was constructed. 1935 H. J. Davies Precision Workshop Methods xiii. 242 The general effect produced by lapping is to remove the crests of a ground surface down to the bases of the intervening hollows. 1950 C. R. Hine Machine Tools for Engineers xii. 241 Rough lapping may remove as much as 0·003 in., and finish-lapping as little as 0·0001 in... Commercial lapping operations can produce parts to limits of 0·000025 in. 1950 W. Cooper in A. W. Judge Grinding, Lapping & Polishing II. vi. 201 The Newall 10U Universal Lapping Machine..is a type employed..for lapping anvils and parts of gauges and the locating rollers of their jig~borers and measuring machines. 1971 B. Scharf Engin. & its Lang. x. 94 Lapping is regularly used in order to finish gear teeth, plug gauges,..straight surfaces, etc. < as lemmas |
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