angle-grinder

A Documentary Film About an Angle Grinder

Need a handy, versatile tool that can cut, grind, and polish? Get yourself an angle grinder! But before you do some angle grinding, watch this film narrated by Brooks Moore on how it’s made.

As one of the most useful tools on any job site, an angle grinder is made through the following steps:

  1. Blocks of pure aluminum are fired in a furnace to turn them into liquid form. The factory then casts the molten aluminum to produce gear housings.
  2. Next, a robot performs the transferring of one of the gear housings to a milling station. The same machine will retrieve a completed part.
  3. The doors of the milling station then close, then a computerized cutter equipped in the station will carve threads into the middle bearing seat to enhance the profile of the part.
  4. The rotor for the electric motor will then be made next. An automated system will push special cardboard end discs onto the rotor shaft. The right portion will then be equipped with end disks.
  5. The system will install a part called the “collector” on one end. The collector is made of copper and plastic. It is responsible for transmitting power to the rotor to make sure that the grinding or polishing attachments can turn.
  6. The right part has a collector installed. Next, the spinning wires wind the copper wire into grooves in the rotor at both ends. This wire will act as an electromagnet that will optimize the power output.
  7. The system will now insert covers into the slots in the rotor wall. This step will not only insulate the rotor, but also stabilize the copper coil.
  8. The spinning machines will then wrap copper wire around every half of the stator. The stator is in charge of creating the electromagnetic field around the rotor.
  9. A robot then joins the two halves of the stator in a fixture and welding makes the assembly permanent.
  10. Over to an injection molding machine, it now forms plastic into outer casings for the grinder. A robot will transfer the casing to a platform for printing.
  11. A stamp is assigned to add a silver ring to the embossed company logo, giving an improved visual appearance. angle-grinder-plastic housing
  12. An employee then slides the plastic housing over the stator and a pneumatic press machine fits the two together.
  13. The worker will then wire the on and off switch for the angle grinder. By this time, the gear housing has been equipped with the drive gear. He then installs the gear system on one end of the rotor and inserts the rotor assembly in the stator.
  14. An automated machine will screw everything together to finish the angle grinder motor.
  15. A nozzle will fill the gear head with grease, then an employee will place the spindle of the safety clutch on top of the gear head and then the mechanized system will screw it in place.
  16. The worker will wire the electrical plug to the angle grinder motor. He then encloses the electrical wiring using a plastic cover and locks the cover in position with screws using a metal template to help in the placement.
  17. The angle grinder, by now, is ready to undergo quality control tests.
  18. One test will depress the grinder’s switch while a computerized system examines the motor’s performance. If it passes all the tests, the angle grinder will now be ready to serve handymen like you.

angle-grinder