Lab Report Most Effective Type of Drill
Research Report
Introduction- The aim of this report is to present research and findings as to which type of drill is most suitable to our application. We are screwing screws through the wall of a letterbox. The three types of drills we are investigating are, DC or cordless, AC main power and Pneumatic (air).
AC
Operation of AC drills- Drills with cords use, AC ( alternating current ) power which is the 240 volt supply you would get from an outlet. The most common way of generating this electricity is, the burning of a fuel ( usually coal ) to heat a body of water which turns to steam. This steam works to compress a piston inside a cylinder which has attached a crank. This crank turns as the piston moves back and forth. As the crank turns, it is attached to an turbine, magnets and other influencing forces help to create n electrical field which is then sent in very high voltages, down power lines. When the main lines get to outside the destination, 100 000 volts is tamed down to 240 volts with the help of a transistor.
AC Motors-
Cost- Ac drills’ prices can vary according to quality, you could pay as little as $30
For one but if your after quality, you might be up for as much as $300.
Safety- these can be quite dangerous as the cord may fray and electrocute the user. You might accidentally drill through the cord. And it can’t get wet. Voltage overload in electrical storms.
Maintenance- General maintenance on chuck and motor but always maintain cord.
Maneuverability-movement is limited by the length of the cord
Speed/Torque control- Variable speed control available on most new Ac drills.
Summary- Good for use where high power is required for long periods of time. Movement lets it down, as well as limited weather use. Safety is also a concerning issue. These have more available features such a hammering ability.
DC
DC power generation- through a battery, recharged by AC power and a transistor which converts outlet, 240v AC electricity into a 6,9,12,14 volt battery form.
DC motors-
Cost-As with AC, prices vary incredibly, from, $30 up to $400 for the latest in technology. Again, the difference in price reflects quality.
Safety-Very safe, handy man drill as you can use it in the rain with no hassle. Also, there are no worries with cords.
Maintenance-General maintenance required
Maneuverability- excellent movement available, take anywhere.
Stirling Bridge had been a thriving power tool business for over 100 years. The company had sold and distributed power tools and equipment all over the U.S., Europe, and third world countries. Recently one of Stirling Bridge’s top selling products, the Braveheart power tool line, came under attack when consumer agencies conducted research and found many consumers who purchased the power tools were experiencing significant harm and personal injury after use. Stirling Bridge (STIRLING BRIDGE) had identified potential safety concerns with their power tools and hired an independent research company to investigate why consumers were being injured using their power tools, well before the company came under the attack of public agencies.
A. When considering what piece of equipment to use for a job, you should consider what the task is, what tools you have to hand and which tool can be used most safely, appropriately and efficiently.
The Cons of being an electrical lineman is that you have to work in any weather conditions that mother nature throws at you. Also climbing to incredible heights, if you are afraid of heights this could be bad for you if you want to become an electrical lineman. Also dealing with high voltage could easily kill you if you touch it and are not wearing the proper clothing. Personally i do not plan on having this as career in the future, it’s not really my style of working. Heights is not a problem for me but i would rather work from the ground than being on a sketchy pole 50ft in the
For the average homeowner, owning a chainsaw might not even be considered an option. First of all, operating this kind of equipment is not a piece of cake especially for a novice chainsaw user. Second, assembly of the chainsaw is quite complicated and tiring. Third, purchasing a chainsaw doesn’t come cheap.
needed a light, inexpensive, portable, and easy to use tool. I thought of the most common
· Introduction of a Black & Decker’s one of the stable brands (DeWalt) that has no negative association
Even if it doesn't incorporate the most state-of-the-art technologies that are currently present in its counterparts and the other hydraulic jack hammers in Stanley's long lineup, the BR45 is still perfect for serious demolition applications. It has an industry-leading design and superb specifications that just prove that it is a cost-saving investment and a powerful equipment that can survive multiple years of use.
Black & Decker (B&D) is a global manufacturer and the world’s largest producer of power tools, power tool accessories, electric lawn and garden tools, and residential security hardware. The company was a pioneer in innovation and development of power tools and has used that position to build strong brand names that enjoy worldwide recognition. Key Causes for Poor Performance in the Professional-Tradesmen Segment The reason B&D has performed poorly in the professional-tradesmen segment is due to the positioning of the B&D brand in this segment. Poor positioning of the brand has resulted in customer confusion and negatively impacted customer perception of the brand in terms of being a quality product. B&D Performance in the Power Tool Industry Overall Any adjustments to B&D’s strategy in the professional-tradesmen segment must not have an adverse impact on their success in the consumer or professional-industrial segments. Therefore, a thorough understanding of the needs of each segment will be important in building a viable strategy to challenge Makita in the professional-tradesmen segment, while continuing to maintain share in the other two segments. _Consumer _Segment Professional-Tradesmen Segment This category consists of professionals who are buying a product for their own use on a job site. Their livelihood depends on the quality and performance, as well as the reflection on their skills that using a particular tool brings from others on the job site. Since they are purchasing their own tools, this segment needs this high quality performance at a reasonable price. However, since Makita and Milwaukee are both priced higher than B&D and are seeing greater success in this category, tradesmen are clearly willing to pay more for a product they perceive will be more effective for their use. Key needs for this market segment include: Performance and quality - {text:change} does the job needed to be done, doesn’t break down, produces high-quality results and more efficiently gets the job done. Reliability and durability - does the job every time and can be used for an extended period of heavy continual use. Safety Support from the Manufacturer – if the product breaks or performs poorly, access to replacement parts and service will be key in maximizing performance up-time.
We have all been there. We walk into the garage of our mechanic’s shop, taking a quick glance; we see the huge elaborate toolboxes that each mechanic owns. Most of them are from Mac, Matco or Snap-On. Unless you work in the tool industry most people do not realize what the real cost of each of these boxes is.
$6 or whatever it was. I didn't go back because once you know the power chords
The importance of an electrical lineman is huge, not only in the community but also in most of the world. Their education, training, and correct use of equipment help them in their different and dangerous work conditions to accomplish the tasks of providing power to their communities.
Since early 2003 the Electrical Inspectorate has been working to raise public awareness of Residual Current Devices (RCDs), with the aim of eventually enforcing the use of these devices as recommended by the standard adopted by the St. Lucia Bureau of Standards for wiring of buildings SLNS/BS 7671: 2001- Requirements for Electrical Installations ¡V IEE Wiring Regulations ¡V Sixteenth Edition. These Regulations though only recently adopted by the Bureau of Standards is the Regulations referred to by the St. Lucia Electricity regulations of 1973 as the standard of wiring of buildings. For a very long time the cost of these devices had proven prohibitive for the enforcement of the requirement. However, it is now believed that safety concerns as it relates to electrical hazards such as fire and electrocution far outweigh the cost of these devices
There are sometime thing that even you can’t accomplish be yourself, If you know you can't do something ask someone else for help when working as an electrician. Safety is the most important thing that is needed when being an electrician and working with electricity. When asking for help your co-workers will help you, because you help each thought out the whole project. That is friendship that is alway needed in a job.Safety is the first priority that is needed to be followed without anyone telling you. Don’t joke around when you are working near electricity. You should be serious in willing to help when you are needed or when you need help.
Screwdrivers are very popular among the hand tools which we use in our daily use. But now a days the screwdriver demands hardness and higher torque values for the meeting the requirements and to compete between the manufacturers. For maintaining both torque and hardness in higher level. there are mainly three key factors for the producing the required type of screwdriver : heat treatment, material and machining processing. On the other hand the most famous type of steel used in the manufacturing of the screwdriver bit are Cr-V type of steel, material wise known as SAE6150 steel. The hardness of this material is known to be HRC52 (+ 0r - ,2) and the value of torque is about 180 - 190 kgf.cm. There are different varieties of tips for a screwdriver which include Robertson ,clutch, .Allen and Torx but very standard types of tips are flat, slotted, straight or flared.
All useful generators of electricity come in two basic forms, alternating current and direct current. Direct current (dc) comes from generators that do not change in polarity, always producing a positive charge. In alternating current (ac) the polarity of the terminals is always changing from positive to negative. Thus you are left with alternating current flow. There are different ways of measuring and generating alternating and direct current.