The following terms and words are given
definition and meaning to clearly indicate the common and consistent
interpretation to be placed on them by all persons using the job descriptions.
1. Adapt
To modify, alter or change furnished tooling
to fit it for a specific need without altering its basic design.
2. Angle, Compound
The angle between the two (2) non-coinciding
sides of the two (2) oblique angles which are in different planes and have a
vertex and one side in common. (Making a
compound angle usually presents a coordinating tolerance problem since it
results from holding two (2) adjoining component angles within tolerances. After the compound angle is formed, its
measurement with protractor, square or sine bar is exactly the same as for any
other angle and no more difficult.)
3. Assembly Jigs
Jigs which facilitate holding and aligning a
set of parts or assemblies for fabrication or assembly operations.
4. Check, Functional
To determine whether a unit or portion of a
system performs the function for which it is intended and, if not, whether
rework or alteration is required. Checks
of this nature include checking lines for leaks, making buzzer, bell or other
continuity checks, and checking response to controls as on landing gear.
5. Check, Operational
To make a complete check of an entire
completed independent system. (An
operational check always takes place on a completely assembled aircraft,
missile, space vehicle or marine craft.
Examples: checking the complete
electrical system or hydraulic control system on a completed aircraft. It implies the necessity of a thorough
knowledge of the shop theory involved.)
6. Composites
Parts made of two (2) or more
distinguishable material components either metal and/or nonmetal processed
under heat and/or pressure to achieve a desired configuration.
7. Contour (Curvature)
A curved surface having radii of different
lengths all of which lie in parallel planes or the same plane, such planes
being perpendicular to the curved surface, or a curved line having radii of
different lengths all of which are in the same plane. The surface of a cone, a typical airfoil
surface, the curved edge of a profiled plate and the curved layout line guiding
the making of a router block are examples.
Contour surfaces composed of sections of cylinders and edges whose
profile is a section of a circle are excluded since the radii are the same
length.
8. Contour, Compound (Curvature)
A curved surface having radii of different
lengths which lie in nonparallel planes.
Compound curvatures are typical of stretch press and drop hammer
dies. The surface of a sphere or section
thereon would be a regular compound curvature and is excluded.
9. Curvature, Reverse (Contour)
Means a compound curvature that reverses its
curvature so that it has both concave and convex portions.
10. Coordinated Tolerances, Coordinated Dimensions
These expressions are used only when
exacting tolerances are implied, i.e., exacting tolerances are to be
associated always with "coordinated dimensions," "coordinated
tolerances" unless modified expressly.
It should be understood that the mere location of a point by two (2) or
more reference dimensions does not in itself mean that the dimensions
themselves are coordinated. The following
is an example of truly coordinated dimensions:
The precise dimensions between two (2) holes must be held while at the
same time the precise dimensions locating each of the holes must also be held
with respect to another reference point or line.
11. Data Input
The use of any terminal or keyboard device
to insert information into a computer system.
12. Data Retrieval
The use of any terminal or keyboard device
to obtain information from a computer system.
13. Developmental or Experimental Parts
Parts intended for use on an experimental or
developmental aircraft, missile, space vehicle or marine craft, i.e.,
one of a few aircraft designated as being actually or potentially subject to
major modification or change. These
aircraft, missiles, space vehicles, or marine craft are usually produced singly
or in small lots using standard tooling, improvised tooling, newly constructed
production tooling or no tooling. Use of
this term in a job description does not imply a particular level of difficulty
unless such intention is clearly and specifically indicated.
14. Draw, Deep
The relation of depth of draw to its other
dimensions is such that it is distinguished by custom from moderate or shallow
draw.
15. Drawing Metal
The forming of sheet metal or other material by pressing it into a die
while at the same time retarding movement of the metal into the die by
mechanical holding, as with draw rings.
16. Electronic Systems
Systems utilizing interrelated devices
constructed or working by the methods or principles of electronics.
17. Experimental Work, Developmental Work
Experimenting with the process or operation
(assembly and/or fabrication) in order to develop new or improved methods, or
building or making new assemblies and installations where exercise of a thorough
knowledge of shop theory involved is necessary and further is a recognizably
difficult assignment which requires ingenuity to accomplish the assignment
satisfactorily. It does not include work
done by a usual or established process or operation on a part even when such
part is on or will later be used on an experimental or prototype product.
18. Hand Tools
Hand tools normally used by the workmen in
the performance of their occupation, such as files, rasps, deburring tools,
chisels, saws, hand drills, screwdrivers, wrenches, mallets and punches.
19. Layout
The actual marking of locating and reference
points and lines on the material, part, tool, fixture, jig or assembly worked
on. (Layout in itself does not imply a
high level of difficulty of skill since it can be a simple work operation such
as measuring a length on a piece of lumber and marking a line or point at which
it is to be sawed, marking lines on pavement with a chalk line preparatory to
painting, or scribing around a furnished template on flat stock. On the other hand, layout can be a difficult
work operation which requires much skill, knowledge, and experience to make the
necessary computations, part setup, precise measurements and markings, and
interpretation of complex blueprints such as on a complex die or casting
requiring layout to establish locations for coordinated hole patterns, compound
angles and/or irregular curvatures.)
20. Layout of Part
Marking of points and lines which will
determine the exact nature and dimensions of the part after machining or
fabrication operations have been performed.
(Layout of this nature is an integral and necessary step in the
fabrication of the part.)
21. Lead
On the part of any classified employee to
delegate as authorized, a portion of his/her allocated work to employees
assigned to work with him/her and pass on sufficient information to enable
those employees to accomplish their work in a manner that will result in
economy, quality and efficiency.
Employees classified on jobs which include
lead responsibilities will:
(a) Make
detailed work allocations as instructed by the supervisor, in conformance with
the classifications of employees being led, but will not make basic work
assignments which affect the classification of employees.
(b) Be
responsible for furnishing sufficient and accurate information to assigned
employees.
(c) Interpret
information, answer questions, review, check work and eliminate ordinary
difficulties.
(d) Perform
the other "Determining Duties and Responsibilities" specified in
assigned classification.
Employees classified on jobs which include
lead responsibilities shall not formally appraise the work of other employees
or make, as a result of solicitation by the supervisor, recommendations
concerning employment, release, transfer, upgrading or disciplinary action
relative to other employees, be directly responsible for the quantity or
quality of work produced by other employees, be responsible for the assignment
of overtime within the shop, be required to take attendance for other than the
purpose of making detailed work allocations, or be responsible for handing out
paychecks.
22. Multi-Dimensional Measurement Systems
Measurement systems capable of generating
precision coordinate data through the use of multi-dimensional techniques. These systems typically utilize optics,
lasers, film based or digital technologies.
Examples of current systems include, but are not limited, to laser
trackers, coordinate measuring machines, photogrammetry and theodolites.
23. Pickup
The performance, out of usual or normal
sequence, of work operations which have been omitted by intention or of
necessity (as part shortage or rushed schedule) or by oversight (as failure to
drill a hole, make a cutout, or install a part). (Pickup work does not of itself establish a
high or higher level of difficulty since work done out of sequence is very
often no more difficult than when done in sequence. Therefore, the level of difficulty is to be
determined from the composite job description and compared with the actual
pickup work in question.)
24. Plan Sequence of Operations
To devise and develop, subject to
supervisory approval, a method of fabrication, assembly, installation
progression, testing or inspecting, etc., for an employee's given work
assignment whereby subject work will be accomplished in the most practical,
expedient and efficient manner in keeping with quality standards. It is intended to relate solely to the
employee's work operation and does not encompass the progression of the work
order to or through the department.
25. Production Aids
Devices such as temporary jigs and fixtures
made by the worker to facilitate work operations, increase production or reduce
elements of fatigue or strain.
Production aids made into permanent tools will be checked and identified
by tooling organizations.
26. Program
A sequence of instructions that directs a
computer to perform specific operations to achieve a desired result.
27. Repair
To restore a part or assembly to its
original state or utility after it has been damaged by accident or by
wear. It does not have the same meaning
as "Rework."
28. Rework
To undo and then do over work previously
accomplished in order to correct errors or make it conform to
specifications. (Rework can be simple or
difficult according to its nature and variety, therefore, the level of
difficulty intended is to be determined from the composite job description.)
29. Setup
A broad term which becomes specific only
according to its usage and application to machines and/or operations
concerned. It includes the various
necessary physical work operations or steps (other than layout) which must be
accomplished before actual fabrication can proceed. (Setup of a machine might include securing
material to machine bed at the proper angle for cutting, selecting, aligning
and setting cutting tool setting speeds and feeds, and adjusting coolant
flow.) In most assembly operations,
setup (e.g., positioning parts) is so closely intermingled with fitting
and joining together that setup is not customarily designated as such. This is generally true of operations where
machine operation is not the primary job factor.
30. Shop Practice
The generally accepted method of performing
a basic, common, or usual operation under specific conditions. It covers the knowledge which is common to
the occupation itself and to most manufacturing shops using the operation under
consideration. Besides the knowledge and
ability to use required hand tools and equipment, it includes knowledge of
general safety practices, conduct, rules of cleanliness, neatness, good
housekeeping and care of equipment. Used
in the phrase "shop practices and procedure," practice need not imply
other than practices or methods learned or acquired at any one shop.
31. Shop Procedure
The way custom and management require, wish
or specify that the work be performed.
It includes the organizational and Company rules, procedures and
policies made known to the employee for his/her information and expected
compliance. It covers or implies having
sufficient knowledge of organization, management, and physical details of the
Company to perform satisfactorily the required work in a generally harmonious
manner.
32. Shop Theory
The comprehensive craft knowledge and
special skills associated with the particular trade and related trades without
which advanced work of high quality, quantity and uniformity may not be
performed. A thorough knowledge of shop
theory is considered necessary to accomplish the more difficult and diversified
work of an occupation and includes a real understanding of the capacities as
well as limitations of the machines and skills used in the trade. It implies a knowledge of "why" as
well as "how" a given task should be done. It is acquired by a combination of
observation, experience and schooling.
33. Software
A collection of programs, routines, and
sub-routines that facilitate the programming and operation of a computer to
include documentation and operational procedures.
34. Tooling, Standard
Those tools or tooling used on the same or
different types of machines or operations, principally in making a setup for
either layout or machining and occasionally for bench or assembly work and
which further are found commonly in nearly all shops and industries performing
similar operations. (In the machine shop
it would include Vee-blocks, parallel bars, angle plates, chucks, collets,
machine vises, a wide variety of clamps, bolts, locks and wedges. In bench or assembly work it would include
surface plates, table vises, and various common attachments used on portable
and stationary tools to permit holding the work or increasing the scope of the
tool.)
By:___________________________ By:_________________________
Date: _________________________ Date:_______________________