Part Classes


(system) #1
Call me "all wet," or whatever need be: Our 355 inventory classes have
served us well, despite what professional materials managers might say.

Classes that begin with "0" (zero) were assigned to miscellaneous shop
supplies.
Classes that begin with "1" (one) were assigned to bushings and bearings.
Classes that begin with "20" through "28" were assigned to cutters (drills,
carbide inserts, end mills) - items that are used on the CNC machines.
Classes that begin with "29" were assigned to individual fastener styles
(Soc Hd Cap Screws, HX Hd Caps, Flat Soc Caps, etc)
"3's" are currently unassigned.
Classes that begin with "4" were assigned to "Finished Goods-Machined
Parts," i.e., almost anything that's assigned to a single material list (BOM)
The second and third characters of "4xx" contain the product group
code-that makes it easy to track sales by product group WITHIN inventory class.
"5's" got stuck with all bar, plate, rod, and sheet stocks
"6's" are currently unassigned.
"7's" were assigned to material composition of (metallic) castings, i.e.,
710-Castings-Aluminum 356, 711-Castings-Aluminum 319
"8's" for fixtures (we retain, re-use, and re-machine all of our fixturing,
rather than creating new every time the same part comes up)
"9's" for CNC programs

Well, by now, you probably get the general idea. Perhaps we could do with
fewer classes, but this design (a holdover from DCD Classic days) had input
from manufacturing engineers, design engineers, purchasers, and shop supply
stockers. If you find that fewer classes would simplify your design
scheme, by all means, do that. One thing to keep in mind, though: you can
always consolidate classes down the road, whereas, if you start off with
too few, you may wish you'd done it differently from the start.

Dan Maddox
Pactiv Corp
South Portland Molded Fibre Tool & Die E & D and R & D

At 08:02 AM 8/9/2000 -0400, you wrote:
>What is the general rule of thumb when determining if a part class is
>necessary or not?
>
>Part Classes:
>
>Load Conveyor Roll Bearing Plates
>Oven Roll Bearing Plates
>Bending Roll Bearing Plates
>Quench Roll Bearing Plates
>Cooling Roll Bearing Plates
>Unload Conveyor Roll Bearing Plates
>
>The material management instructor guided us into forming one part class
>for this particular situation. Obviously, this part class was called Roll
>Bearing Plates.
>
> Part Class Part
> Description Search
> Word Part Number
>
>1.) Roll Bearing Plate Plate, Roll Bearing - Load
>Conveyor Rollbear 13293-001
>2.) Roll Bearing Plate Plate, Roll Bearing -
>Cooling Bearing Plates Rollbear 8343-005
>3.) Load Conveyor Roll Bearing Plate Plate, Roll Bearing - Load
>Conveyor Rollbear 13293-001
>4.) Cooling Roll Bearing Plate Plate, Roll Bearing -
>Cooling Bearing Plates Rollbear 8343-005
>
>Figuring in human error for naming parts and/or search words
>inconsistently, which of the following areas listed below would inhibit
>running a proper time phase report (or other report used to generate
>material costs of a specific part on one job or multiple jobs):
>
>Inconsistent Search Word Labels
>Inconsistent Part Descriptions
>Other
>
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>Angelo Vitalone
>Tamglass Tempering Systems
>Mechanical Designer / IT Manager
>
>Email Address: avitalone@... <mailto:avitalone@...>
>Phone: 1-856-786-1200 Extension: 131
>Fax: 1-856-786-7606
>
>
>
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(system) #2
What is the general rule of thumb when determining if a part class is
necessary or not?

We are in the prototyping stage of our vantage start-up and when first
described how a part class is determined we generated roughly 85 different
part classes. After attending the material management class we agreed to
shorten the amount of part classes down to roughly 30. I am scared that
there are not enough to adequately use the power of the software. The way
this was explained to me was the time phase report can be sorted by part
classes and/or search words. We are putting the emphasis on properly
setting up search words in the part master file for a number of people over
a long period of time. There are key parts on our machines that we would
like to run reports on, which really are not made in high volume, so some
part classes would only be made up of say 20-30 different parts, roughly
1-5% of the total parts used.


Example: On our glass tempering ovens there are bearing plates that
mounting are rolls that drive the glass through the oven and conveyors. In
most casese, there are 6 different types of bearing plates used throughout a
certain glass tempering oven.

Part Classes:

Load Conveyor Roll Bearing Plates
Oven Roll Bearing Plates
Bending Roll Bearing Plates
Quench Roll Bearing Plates
Cooling Roll Bearing Plates
Unload Conveyor Roll Bearing Plates

The material management instructor guided us into forming one part class for
this particular situation. Obviously, this part class was called Roll
Bearing Plates.

Part Class Part Description
Search Word Part Number

1.) Roll Bearing Plate Plate, Roll Bearing - Load Conveyor
Rollbear 13293-001
2.) Roll Bearing Plate Plate, Roll Bearing - Cooling Bearing
Plates Rollbear 8343-005



Part Class
Part Description Search Word
Part Number

3.) Load Conveyor Roll Bearing Plate Plate, Roll Bearing - Load
Conveyor Rollbear 13293-001
4.) Cooling Roll Bearing Plate Plate, Roll Bearing -
Cooling Bearing Plates Rollbear 8343-005




Figuring in human error for naming parts and/or search words inconsistently,
which of the following areas listed below would inhibit running a proper
time phase report (or other report used to generate material costs of a
specific part on one job or multiple jobs):

Inconsistent Search Word Labels
Inconsistent Part Descriptions
Other


























Angelo Vitalone
Tamglass Tempering Systems
Mechanical Designer / IT Manager

Email Address: avitalone@... <mailto:avitalone@...>
Phone: 1-856-786-1200 Extension: 131
Fax: 1-856-786-7606