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) |
| Sets up and operates single- or multiple-spindle lathe-type screw machines equipped with automatic $T3indexing$T1 and feeding mechanisms to machine metal bar stock, following specifications and tooling instructions and applying knowledge of screw machine operations: Reads blueprint or job order for product specifications, such as dimensions, tolerances, number of parts to be machined, and tooling instructions, such as cutting speeds, feed rates, depth of cuts, and cutting tools to be used. Positions and secures specified collets, bushings, and stock pushers onto stock-feeding mechanism, using wrenches and screwdrivers, and loads bar stock into feeding mechanism, manually or using hoist. Installs and adjusts specified cams, gears, and stops to control stock and tool movements at each station. Positions and secures tools in toolholders, verifying positions with gauges and other measuring instruments. Sets cutting speeds and feed rates. Moves controls to cycle machine through settings, stopping machine and adjusting tool positions and machine controls to allow for operating factors, such as timing, clearance between moving parts, and chip removal. Starts machine, observes operation, and inspects first-run and sample workpiece to ensure machining conforms to specifications, using measuring instruments, such as plug and ring gauges, calipers, and micrometers. Replaces worn tools. May operate $T3bench grinder$T1 to sharpen tools. May machine nonmetallic materials. 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) | |
Source: compiled by the editor from various references; see credits. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)41 55 54 4F 4D 41 54 49 43 2D 53 43 52 45 57 2D 4D 41 43 48 49 4E 45 4F 50 45 52 41 54 4F 52 |
| Leonardo da Vinci (1452-1519; backwards) (references)
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Binary Code (1918-1938, probably earlier) (references)01000001 01010101 01010100 01001111 01001101 01000001 01010100 01001001 01000011 00101101 01010011 01000011 01010010 01000101 01010111 00101101 01001101 01000001 01000011 01001000 01001001 01001110 01000101 00100000 01001111 01010000 01000101 01010010 01000001 01010100 01001111 01010010 |
HTML Code (1990) (references)A U T O M A T I C - S C R E W - M A C H I N E   O P E R A T O R |
ISO 10646 (1991-1993) (references)0041 0055 0054 004F 004D 0041 0054 0049 0043 002D 0053 0043 0052 0045 0057 002D 004D 0041 0043 0048 0049 004E 0045 004F 0050 0045 0052 0041 0054 004F 0052 |
Encryption (beginner's substitution cypher): (references)355554494735544337155337523957154735374243483924950395235544952 |
| 1. Orthography 2. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
