| 单词 | index head |
| 释义 | > as lemmasindex head index head n. Engineering an attachment used with a milling machine or gear-cutting machine that holds the work and enables it to be readily and accurately indexed between successive operations. ΘΚΠ society > occupation and work > equipment > machine tool > [noun] > adjustable bearing holding workpiece > that enables sequences of operations index centrea1884 indexing head1901 index head1902 1902 [implied in: Internat. Library of Technol. II. §15. 21 Direct indexing is done by the aid of an index plate fastened direct to the index-head spindle; that is, the index plate is moved to obtain the divisions. In indirect indexing, the index plate is normally stationary, and the index-head spindle is rotated by the use of suitable gearing. Indirect indexing is divided into..simple and compound indexing. (at indexing n. 2)]. 1923 R. C. H. Heck Mechanics of Machinery: Mechanism v. 234 Indexing is done mostly on the milling machine and on gear cutting machines. For general service a distinct appliance called the index head is used. 1961 L. E. Doyle et al. Manuf. Processes xxiv. 586 A dividing or index head is a mechanical device for dividing a circle accurately into equal parts. < as lemmas |
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