Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Occupations | Sets up and operates one or more multiple-spindle lathe-type screw machines equipped with automatic $T3indexing$T1 and feeding mechanisms to perform turning, boring, threading, and $T3facing$T1 operations on metal bar stock on custom basis, analyzing specifications and deciding on tooling according to knowledge of screw-machine operations: Studies blueprint, visualizes machining to be done, dimensions of parts and permissible tolerances, and plans sequence of operations. Visualizes movements of machine parts, workpieces, and tools in each operation in relation to others, and decides on station and timing of each operation to assure efficient use of tools and time. Selects cutting speeds, feed rates, depth of cuts, and cutting tools to be used on basis of experience and knowledge of metal properties and shop mathematics. Installs collets, bushings, and stock pushers in stock-feeding mechanism, using wrenches and screwdrivers. Installs and adjusts cams, gears, and stops to control stock and tool movements at each station. Positions and secures tools in tool holders, verifying positions with gauges and other measuring instruments. Moves controls to set cutting speeds and feed rates. Cranks machine through cycle, stopping machine and adjusting tool positions and machine controls to allow for such factors as timing, clearance between moving parts, and chip removal. Starts machine, observes operation, and verifies conformance to specifications of first-run and sample workpieces, using such instruments as plug and ring gauges, calipers, and micrometers. Replaces worn tools. May operate $T3bench grinder$T1 or cutter-grinding machine to sharpen tools. May machine plastics or other nonmetallic materials. May set up and operate single-spindle screw machine. May be required to have experience with particular material or product or machine of particular size, type, or trade name. May set up machines for other workers. (references) |
| Operates one or more previously set up multiple-spindle screw machines equipped with automatic $T3indexing$T1 and feeding mechanism to perform series of machining operations on metal bar stock, following specifications: Reads blueprint and job order for such information as dimensions, tolerances, and number of workpieces to be machined. Examines machine to become familiar with tooling setup. Loads stock into feeding mechanism. Starts machine and observes operation. Verifies conformance of sample workpieces to specifications, using preset gauges, micrometers and dial indicators. Replaces worn tools. Adjusts machine controls and changes tool settings to keep dimensions within specified tolerances. May operate $T3bench grinder$T1 or cutter-grinding machine to sharpen tools [TOOL-GRINDER OPERATOR (machine shop)]. May machine plastics or other nonmetallic materials. May operate single-spindle screw machine [SCREW-MACHINE OPERATOR, SINGLE SPINDLE (machine shop)]. May be required to have experience with particular material or product or machine of particular size, type, or trade name. (references) | |
Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)42 41 52 2D 4D 41 43 48 49 4E 45 4F 50 45 52 41 54 4F 52 2C 4D 55 4C 54 49 50 4C 45 53 50 49 4E 44 4C 45 |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01000010 01000001 01010010 00101101 01001101 01000001 01000011 01001000 01001001 01001110 01000101 00100000 01001111 01010000 01000101 01010010 01000001 01010100 01001111 01010010 00101100 00100000 01001101 01010101 01001100 01010100 01001001 01010000 01001100 01000101 00100000 01010011 01010000 01001001 01001110 01000100 01001100 01000101 |
HTML Code (1990) (references)B A R - M A C H I N E   O P E R A T O R ,   M U L T I P L E   S P I N D L E |
ISO 10646 (1991-1993) (references)0042 0041 0052 002D 004D 0041 0043 0048 0049 004E 0045 004F 0050 0045 0052 0041 0054 004F 0052 002C 004D 0055 004C 0054 0049 0050 004C 0045 0053 0050 0049 004E 0044 004C 0045 |
Encryption (beginner's substitution cypher): (references)3635521547353742434839249503952355449521424755465443504639253504348384639 |
| 1. Orthography 2. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
