Umbilical cable assembly's or multicore cable harness consist of any number of cables and other services, including Ultrasonics, motors, encoders, pneumatic, cameras and lighting.
The cable assembly can vary in length and construction, but usually will form a bundle that is then covered in a type of expandable sleeving, heatshrink or a combination of both.
Connectors multi pin or coaxial of crimp or solder type and fittings for various services are fitted to either end.
Depending on the Mechanical Assembly device or Manipulator configuration it can also be interfaced via a PCB assembly contained in a junction box.
A majority of these systems are used in a harsh enviroment so cable assemblies and the type of material used is very important, so any PCB assembly sub-contractors or Cable assembly sub-contractors procurment and QA systems need to be vetted.
Wednesday, 29 February 2012
cable assembly
when manufacturing a cable assembly also known as a wiring harness, the cables and wires are cut to length this can vary from a few centimetres to many meters. Markers are placed on the cables for identification purposes, the ends of the wires are stripped back to expose the wire then either connectors or crimps are fixed to them, there are many types of connectors which are an electro-mechanical device, plug and socket connectors are usually made up of a male plug and a female receptacle. Plugs generally have one or more pins that are inserted into openings in the mating socket. The connection between the two parts must be sufficient to make a good electrical connection and complete the circuit. When the cable harness is complete it is generally continuity tested to ensure the correct pins are connected to the correct wires.
Tuesday, 28 February 2012
PCB assembly
Electronic contract manufacturing or electronic manufacturing services are terms used for companies that manufacture printed circuit boards, and test and repair pcb's, these companies will often offer other services such as wiring assemblies also known as cable harnesses or cable assemblies, electro-mechanical assembly is also a important part of the electronics industry, often lots of smaller sub-assemblies are assembled that will later all come together in a final finished product
Having the ability for fine intricate work is essential for the printed circuit board assembly process, it is also neccessary to be methodical but to work quickly and efficiently, being a team player is also important. Other skills that you need include attention to detail as this is paramount for quality checks such as pre-production checks on components before they are assembled onto a printed circuit board (PCB), it is generally good practice to get what is known as a first off, this is when a quality check is done on the first printed circuit board (PCB) in a batch so any mistakes are picked up quickly, things an inspector would be looking out for at this stage in the printed circuit board (PCB) assembly process would be the values of resistors, diodes and capacitors inserted with the correct oriantation, intergrated circuits (IC) having pin 1 lined up with silk screen markings on the printed circuit board (PCB)
. After the printed circuit board (PCB) has been soldered more quality checks are carried out on the solder joints, bridging may occur this is when two solder joints join together and a short is created, to rectify this a printed circuit board (PCB) assembler would remove the solder from both joints with a solder sucker then hand solder the joints. Once the printed circuit board (PCB) is complete it is tested this can be done on automatic test equipment (ATE) by an electronic engineer
Having the ability for fine intricate work is essential for the printed circuit board assembly process, it is also neccessary to be methodical but to work quickly and efficiently, being a team player is also important. Other skills that you need include attention to detail as this is paramount for quality checks such as pre-production checks on components before they are assembled onto a printed circuit board (PCB), it is generally good practice to get what is known as a first off, this is when a quality check is done on the first printed circuit board (PCB) in a batch so any mistakes are picked up quickly, things an inspector would be looking out for at this stage in the printed circuit board (PCB) assembly process would be the values of resistors, diodes and capacitors inserted with the correct oriantation, intergrated circuits (IC) having pin 1 lined up with silk screen markings on the printed circuit board (PCB)
. After the printed circuit board (PCB) has been soldered more quality checks are carried out on the solder joints, bridging may occur this is when two solder joints join together and a short is created, to rectify this a printed circuit board (PCB) assembler would remove the solder from both joints with a solder sucker then hand solder the joints. Once the printed circuit board (PCB) is complete it is tested this can be done on automatic test equipment (ATE) by an electronic engineer
Matrix
matrix electronics was set up to provide pcb assembly and cable assembly services to the electronic industry. At matrix we provide electronic sub-contract assembly services that include wiring harnesses also known as cable assemblies, wiring looms and cable assemblies, also provided is pcb assembly from small batch prototypes to large batch orders, and electro-mechanical assembly.
We started the company to provide a better quality service for the customer, within only a few weeks of opening our doors we were awarded our ISO9001 certificate. Having worked in the electronics industry for over 20 years we wanted not only to provide a better service for the customer but also for our employees, who are all stake holders in the company, we think by doing this everyone will be commited to providing the quality service our customers expect.
Starting matrix electronics has brought together all our combined experience from the electronics industry in pcb assembly, cable manufacture, electro-mechanical assembly, customer service, and also we are learning new skills about marketing and advertising getting our company name recognised by customers looking for an electronic sub-contractor.
We started the company to provide a better quality service for the customer, within only a few weeks of opening our doors we were awarded our ISO9001 certificate. Having worked in the electronics industry for over 20 years we wanted not only to provide a better service for the customer but also for our employees, who are all stake holders in the company, we think by doing this everyone will be commited to providing the quality service our customers expect.
Starting matrix electronics has brought together all our combined experience from the electronics industry in pcb assembly, cable manufacture, electro-mechanical assembly, customer service, and also we are learning new skills about marketing and advertising getting our company name recognised by customers looking for an electronic sub-contractor.
MATRIX ELECTRONICS
Matrix electronics was an idea that started because of 4 friends that wanted to work together again, we all met back in the 1980's, we worked on the shop floor for one of the biggest electronic companies in warrington and all did our training together, the training at this company was brilliant, we started at the begining learning basic soldering skills then movied onto assembly.
Pre-forming was the first thing to be learned as this is the first stage of PCB assembly, also at this stage the PCB is usually masked off, then we all learned the skills needed to populate a PCB, such as our colour code to be able to identify resistors, we learned that certain components have a cathode and an anode so have to be inserted with the correct orientation, we learned how to inspect a PCB after it had been soldered looking out for dry joints, blow holes and shorts.
Sometimes a PCB would need modifications to bring it up to the latest revision so we learned how to do track cuts and wire links. Once a PCB was complete it would move onto the mechanical section where it would go into the finished product, this was either a plastic or metal box with a front and rear panel, so electro-mechanical assembly skills where also learned, this consisted of crimping and wiring usually switches and transformers, cable assembly skills would also be learned.
We all worked together for over ten years and really enjoyed all aspects of electronic assembly, it was because of our combined knowledge and experience that we decided to start Matrix electronics a PCB assembly and cable assembly sub-contractor for the electronics industry.
Pre-forming was the first thing to be learned as this is the first stage of PCB assembly, also at this stage the PCB is usually masked off, then we all learned the skills needed to populate a PCB, such as our colour code to be able to identify resistors, we learned that certain components have a cathode and an anode so have to be inserted with the correct orientation, we learned how to inspect a PCB after it had been soldered looking out for dry joints, blow holes and shorts.
Sometimes a PCB would need modifications to bring it up to the latest revision so we learned how to do track cuts and wire links. Once a PCB was complete it would move onto the mechanical section where it would go into the finished product, this was either a plastic or metal box with a front and rear panel, so electro-mechanical assembly skills where also learned, this consisted of crimping and wiring usually switches and transformers, cable assembly skills would also be learned.
We all worked together for over ten years and really enjoyed all aspects of electronic assembly, it was because of our combined knowledge and experience that we decided to start Matrix electronics a PCB assembly and cable assembly sub-contractor for the electronics industry.
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