Solution for identifying missing components
Solution for identifying missing components
(OP)
Presently we build starter motors comprising of about 8 major sub assemblies and 20 and odd loose components like washers, shims, fastereners, circlips etc.
We have difficulty in identifying the missing parts after assembly.
Can some one suggest or recommend or share their experiences in identifying missing parts ?
V Venkatesh
We have difficulty in identifying the missing parts after assembly.
Can some one suggest or recommend or share their experiences in identifying missing parts ?
V Venkatesh





RE: Solution for identifying missing components
We have a listing in which all and every component of our servocontrols is identified by an ID number. Our technicians have to prepare all parts they need to assembly the servocontrol, then, while assemblying it, they check every part they use on this listing. So we reduce the risks of missing parts, but it is of course a very annoying process.
FrenchCAD
Goodrich Actuation Systems France
Airbus A380 group
cyril.guichard@goodrich.com
RE: Solution for identifying missing components
RE: Solution for identifying missing components
Wanna Tip? FAQ731-376
"Probable impossibilities are to be preferred to improbable possibilities."
RE: Solution for identifying missing components
RE: Solution for identifying missing components
Do you want to identify a missing part during assembly or check to see if an assembly is short on parts after assembly?
And is it built by one individual or along an assembly line or cell.
Weighing the finished item is fine, unless the smallest clip weighs less than the allowable variation in weight of the final assembly.
If one operator is completing the assembly then a build board is a good approach, Insure that it has a spot for every component. The operator would place the items on the board, Which may be simply a tray with marked compartments, or even a laminated sheet with pictures of the correct part and quantity. After laying out the required parts per the build board, have the operator sign off the part count.
You'll have to decide if you have time to layout parts if you are building to a rate.
If the build is done in a cell or line then have the next operator sign off that he received the WIP assembly into his station completed and ready for his part of the process.
And as always training the operator is important, so they understand the cost to rework the incomplete assemblies.
If there is any conveyance system, vision inspection is a costly option.
Good luck
RE: Solution for identifying missing components
In another case, we have the components kitted in a supermarket and then brought to the line. At the end of the process, there should be no parts left in the kit.
RE: Solution for identifying missing components
I would like to add some more points as requested by all of you.
This is a manual assembly process in a cell, where the operator starts assembling the starter motor assembly at station no. 1 and finishes at station no. 16.
We have provided some fatigue reduction items like, fastening using pneumatic screw drivers, clamping using pneumatic applications, moving components/ part sub assembly in trolleys.
An operator will produce around 75 starter motors in a 9 hour shift, and depending upon the demand, we will deploy a maximum of 12 operators in one assembly line .
The total weight of the final product is around 4 kg, so as suggested by some of you, it may not be possible for us to use weight as a measure for checking.
We have about 30 varieties of starter motors assembled in one line. Hence kitting will also lead us to confusions.
We have provided enough training to the operator, but still the missing parts are taking place.
Are there any other method being followed in similar electro mechanical component industry, to identify missing parts.
I would like to thank once again the members for the response, and I would be glad to see much more responses from more memebers of this forum.
Regards
V Venkatesh
RE: Solution for identifying missing components
Basically you would create a table, listing Station Number (1-16), Assembler Name, Checked By and Pass/Fail. You should also include date, motor version (possibly as paper color).
After the first assembler does their part, the unit would be passed to the next assembler along with the Routing/Tracking sheet. The second assembler would visually inspect for the fullfilled requirements of the 1st, and sign off the sheet. Repeat the process for the remainder of your assembly line.
Wanna Tip? FAQ731-376
"Probable impossibilities are to be preferred to improbable possibilities."