Technical Description

               Power Drill

 

              Table of Contents

1                              History                                                                                                                            

2-3                  Technical Description          

4-5               Inner Parts and Outer Parts

5                              Reflection

6                              References                                              

History

The first Power Drill was invented by Arthur Arnot in 1889. He was a blacksmith from Hamilton Scotland born in 1865, who was inspired to create such a tool by another machine called brace and bit. The new version that Arnot created was powered by ½ horsepower motor. The reason why Arnot created the tool was to drill through solid rock to help build a power plant in Melbourne. The drill was not portable in its original state, it was too big and heavy (figure 1-6). He also patented the tool, which also made it one of the first power tools to be patented. This idea was developed even further by the Fein brothers from Stuttgart who brought in portable power drills (able to hold on hand). In the 1920s the pistol grip was brought in by the Fein brothers at the Black and Decker plant, which would be the beginning of what we see today. The Fein brothers originally owned two restaurants in Milwaukee and they decided to sell them to get into a new business, selling restaurant equipment. One of the brothers moved to Florida and left the company, but Samuel the other brother kept the same name on the business. The company went on to be very successful. The tool went from the original intent to drill rocks and later got developed into many different drills, one of them being the power drill, which replaces what is known as a screwdriver. The work is cut in half, and it is finished much faster because of the development of this tool. Today, the drill keeps getting renovated to help us work more efficiently.

Technical Description

Figure 1-6                          

The First drill had too many parts that were heavy causing it just to be useful for miners. In order for the drill to work there had to be a balance. The motor had to be designed so that it could cool off and at the same time it wasn’t allowed to throw sparks. The only way to cool off the motor was by airing it out. Water could be used but only air for the motor. There had to be many safety features implemented so that it can be a useful tool. It had to be grounded properly and made sure that the electric cables were set properly. The most important part (figure 3) which was the motor, was practically in the middle covered by everything else in order to avoid things falling into it. Its job was to power the tool. Figures 4-6 were designed to keep everything in place so that the motor wouldn’t overheat or over work too quickly. Figure 1 was the drill that would stick out in order for it to serve its original purpose. The drill kept got improved into a portable one (figure 7) by the Fein brothers.

Figure 7

This invention was the beginning of what we see today but also had some things that we have in today’s drill. For example, it didn’t have an internal fan so it was prone to overheating and it wasn’t cordless, so you had to be withing range of your target. There were many inventions from this drill that would become very useful today. For example, the drills that dentists use and the drills that surgeons use. It’s basically the same concept but just a smaller version of it

Figure 8

Inner Parts

The Field winding is used to produce magnetic fields needed to excite a generator or motor.

The armature is the rotating coils of the motor.

Reduction gears shift the rotational speed of the motor.

Motor cooling doesn’t let the motor overheat.

Ball bearing reduces friction and supports radial.

 The brushes allow the electrical current to pass between the stationary and revolving wires.

Outer Parts

Cord Strain Reliever protects interior wires and cable.

Geared key chuck allows for less slippage when going full power.

Pistol grip handle allows for easy control of the tool.

Aluminum Housing protects the inner parts by covering them.

Insulated trigger Switch lets the drill be manipulated on or off.

Reflection

This assignment helped me see how challenging it can be to research and place things in an order where it can be understood. This first draft isn’t as well as I wanted it to be, but I know that I will improve it by the time that it is actually due. I realized that without the proper context it’s difficult to understand the actual message that you are trying to get across. I realized that I must get better at research in order to succeed. I’m glad that I had to do this assignment to a certain extent. It did help me see some of my potential, but at the same time I know that whatever assignment I get in the future I will simply see it as another challenge that I know that I will be able to do my best in. I did get a little bit overwhelmed the first time I heard about this assignment but I think it went a little smoother than I expected but still a little bit scary because it’s the first time doing something like this. I feel like this was necessary for me to have as an assignment because it helped me see how I thrive and move when having to perform under a little pressure.

References

Koehler, K. (2021, July 10). History of the Power Drill: A beginner’s guide to a popular tool. Pro Tool Reviews. Retrieved March 6, 2023, from https://www.protoolreviews.com/what-is-a-drill/

Repairs, D. (2020, September 25). What inside a drill mains electric 240v and cordless battery powered drills. Retrieved March 6, 2023, from https://drillrepairs.blogspot.com/2020/09/what-inside-drill-mains-electric-230v.html