what is the process and requirement of wire harness assembly ?

What is the process and requirement of wire harness assembly ?
What is a wire harness?
A harness is a combination of wires and cables used to transmit information signals or operating signals. The binding material of the wire harness includes clamps, cable straps, sleeves, electrical tape or a combination of such materials.
Wiring harness assembly process
1, the production of wire harness sub-material number must be compared with the positioning plate to determine the size of the cutting line. In the current wiring harness assembly process, the size of the component number is often satisfied, but not the size of the positioning plate. Cause a lot of unnecessary waste. The sub-material number should also be electrically tested and fully inspected.
2, wiring harness wiring (the sub-material number in accordance with the requirements of the drawing tile on the positioning plate. In wiring, first of all to a region of a region to put, a single area of the submaterial number after putting, and then to put the submaterial number across the region, the submaterial number across the region also want to put simple, and then put complex.
3. PIN insertion (some TER without PIN must be inserted into the corresponding connector first). Binding (Binding position according to the positioning plate, the starting point of binding is generally the starting point of the double line in the positioning plate.)
4. Electrical test (due to the complexity of the line position of the assembly line, test data must be strictly checked. The test can only be carried out after both PE and QE have confirmed)
5. Full inspection (a. Check whether the terminal and CONN are within the tolerance zone; B. Check whether the binding ring is even; C. Check whether the assembly method of parts is correct.
6. Warehousing of wire harness component number (the component number must PASS OQC inspection before post-sequence action can be carried out.)
Process requirements for wiring harness assembly
After the wiring harness is processed and assembled, all the wiring harness should be parallel and cannot be moved. However, the cord or belt should not jam the wire.
When inserting a PIN or welding, the core wires should not be twisted together, but should not be too tight.
During cabling, the terminals, HOUSING, D-SUB, IDC, and CONN of each component number must be consistent with the labels on the positioning board.
Each sub number wire must be arranged according to the route on the positioning plate.
When tying, the rope should move vertically from the bottom of the tying ring.
The harness should be tightly tied and the tail should not exceed 1mm
When tying the rope, the distance between the two binding rings should be about 25mm, and the tail of each rope should be kept about 10mm when tying the rope to the end.
Each rope should be knotted at the beginning and end.
Do not loop or wind the rope when tying it. Do not clamp the connector to the positioning nail. Pull the cable, fix the cable end to the positioning nail, and then bind the cable. Otherwise, the core wire of the terminal may be pulled or the terminal may fall off.
Quality standard for wiring harness assembly
After the wiring harness is assembled into finished products, it is necessary to test the wiring conductivity of the wiring harness and ensure that the conductivity is 100% and there is no short circuit, short circuit and wrong circuit phenomenon. At the same time, it should have the quality standard required by the customers of wire harness, and provide the safety and quality guarantee certificate when packaging.
Each step of the wiring harness assembly and testing process strives to be meticulous, to strive for excellence, in accordance with the ISO9001:2000 quality management system to standardize the operation requirements.
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