Dewalt википедия



Dewalt википедия

Почти все процессы в промышленности и строительстве сегодня выполняются не вручную, а с помощью инструментов с электродвигателем. Они помогают справляться со многими мелкими задачами по дому, особенно при проведении ремонта. В хозяйстве не бывает лишней дрель, шлифовальная машинка, перфоратор, шуруповёрт и т. п. Если нужно порезать плитку, каменные блоки, выполнить каркас из металлического профиля или порезать сетку, которую вкладывают в кладку для прочности стен или в цементную стяжку, то без шлифовальной машины, которую в народе именуют болгаркой, просто не обойтись. Точнее, обойтись можно, но все те процессы, которые электроинструмент выполняет за считанные секунды, механический или ручной инструмент справиться за несколько часов при большой затрате физической силы.

Электроинструмент может быть стационарным и переносным. Это оборудование может выполняться в металлическом или пластиковом корпусе в зависимости от целесообразности и ценового предела. Если рабочий умеет пользоваться перфоратором, сверлильной машиной, штроборезом, электрорубанком, гайковёртом или другими инструментами, что нужны для выполнения его работы, то он один справиться с тем объёмом работы, что и целая бригада с обычным ручным инструментом. Полезной особенностью электроинструмента является возможность смены рабочего органа: пилы, шлифовального круга, биты в дрели или шуруповёрте. Таким образом, машина стаёт пригодной для выполнения целого ряда функций. Электроинструмент — это помощник на работе и дома, который выполняет за человека работу и оставляет ему время для отдыха.

DeWalt DC970 Troubleshooting

Released in 2007, identified by product code DC970K-2. Cordless, 18V 1/2″ drill/driver kit.

Contents

Battery is Not Charging ¶

Your battery will not charge or will not hold a charge

Charger is not plugged in ¶

Find an electrical outlet nearby and plug the battery charger in with the battery attached. The light on the front panel will blink red if it is charging.

Old Battery ¶

Over time, a battery deteriorates and loses its ability to hold a charge. You will need to purchase a new battery if your battery is old.

Blown Fuses ¶

The fuse in the battery charger may have blown due to a power surge. It must be replaced. Check out our replacement guide for replacing the fuse.

Defective Battery Charger ¶

The charger may not be charging the battery efficiently at all due to other broken parts or wear and tear. You will need to purchase a replacement battery charger.

Drill Won’t Operate ¶

Your drill will not work when the trigger is depressed.

Low/Dead Batteries ¶

Your battery may by low on power or out of power. If the battery is low on power, the drill may work slowly or not at all. To replace the battery, check out our replacement guide.

Faulty Battery ¶

First, check to see if the battery needs charging. If it is fully charged, but does not hold the charge for long while using the drill , you may need to purchase a replacement battery.

Defective Battery Charger ¶

The battery charger may not be working. See the «Defective Battery Charger» section above for how to test the charger’s functionality. If it does not work, you may need to purchase a replacement battery charger.

Corroded Brushes ¶

The brushed that are attached to the motor may be old or have accumulated dirt. They may need to be replaced.

The Motor is Burned Out ¶

The motor is the main source of power for your drill. If it is not working, then the drill will not either. To replace the motor, check out our replacement guide.

The Motor Connections are Dirty ¶

The connections to the motor may be dirty. Clean them with a clean cloth.

Chuck is Wobbling ¶

When operating the drill, the chuck is wobbling.

The Chuck is Loose ¶

The chuck is a specialized clamp that holds the drill bit in place to ensure smooth drilling. It is the spinning black piece located directly behind where the drill bit is inserted. The chuck will wobble if it is not fully tightened. To fix this, rotate the chuck clockwise until the wobbling stops.

The Chuck is Defective ¶

Build up could be blocking the chuck from being able to fully tighten. Remove the chuck and clean any build up. You may need to replace the chuck.

The Chuck is Corroded ¶

Corrosion may have built up inside of the chuck. The chuck must be replaced.

Gears Making a Squeaky Noise ¶

The gears are making a squeaky noise while the drill is operating

The Clutch is Broken ¶

The clutch of the drill is located directly above the reverse switch and allows you to control the amount of torque being applied to a screw so it doesn’t go in too deep. So if your drill gears are making a loud noise or any noise that does not sound normal when it is rotating it may help to take the clutch off and see if it is broken. To replace the clutch, check out our replacement guide.

Drill is Stuck in Reverse ¶

The drill will only drill in the reverse direction.

The Directional Switch is Engaged in the Reverse Position ¶

There is a switch located just above the trigger that makes the drill switch directions when pressed. Switch it to the opposite position and see if this causes the drill to go forwards again,

The Area around the Reverse Switch is Dirty ¶

Dirt and grime build up may cause the reverse switch to become stuck in the reverse position. Clean the area around the reverse switch.

The Reverse Switch is Broken ¶

You may need to replace the reverse switch. Check out our replacement guide for replacing the switch.

Dewalt Customer Services

The Dewalt number and information can be found free of charge in the public domain or the companies site here.

Calls will cost 100p/min plus your telephone company’s access charge. Calls from mobiles and other networks may cost more. Simply call the number above and you will be connected to Dewalt Customer Service. CCS have no association with the Dewalt or business you are calling.

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Cordless drill

From DDL Wiki

Group II
Ming Huo
Scott Miller
Vishesh Nandedkar
Mark Rockwell

Contents

Cordless Drill Product Analysis Report

Executive Summary

Scope The use of the cordless drill is varied and depends much upon the “bit” placed in the chuck. Though these bits are important, our focus will remain on the operation of the drill itself.

Needs and Requirements There are certain customer needs that the drill should address: battery life, portability, comfort, durability and the ability to perform in unusual places. In addition to that however, there are certain requirements that should be expected of the cordless drill. Like in the customer needs, the drill should have a long lasting battery and be portable. It also should be safe, have reliable parts and in general be more convenient than a conventional corded drill.

System Function The drill is activated by depressing the trigger on the front of the handle. The result is the chuck spinning at a speed proportional to the degree to which the trigger is depressed. To effectively use the drill, it is necessary for the user to have decent hand strength and finger control to insert the bit as well as keep the drill from spinning out of their hand. In addition, proper use must be defined by the environment the drill is used in factoring in good lighting, reasonably low ambient noise and a lack of excessive moisture (like rain) getting into the casing.

Manufacturing The drill seems very cost effective, with a low number of parts, most if not all of which are mass produced with techniques like injection molding. From an assembly perspective, the drill seems well designed. The frame for example snaps together and is then secured with screws. One area for improvement could be in the number of types of screws used. We found five distinct screw types and feel four of these sizes could have been consolidated.

Failure Modes and Effect Analysis Potential problems in the drills operation may stem from the clutch, chuck, battery and case. For the clutch, the action is very stiff and doesn’t change direction very easily. This could lead to fracture from the user using too much force. For the chuck, break failure is possible and for the case, ergonomics might be lacking making for an uncomfortable grip. The problem we see as most important though is in the battery. The power seems very low and our recommendation is to find a higher quality battery to replace the 9.6V.

Major Customer Needs and Product Requirements

Upon brief observation it becomes obvious the major purpose of a drill is to spin a “bit” with high enough speeds and torque to perform a task. Many different “bits” exist to perform many different tasks, the most common being drill bits, and screw-driver type bits. These type “bits” are used mostly in functions that ultimately involve fastening two or more objects together in some capacity. Other uses include egg-beaters, water pumps, dremeling, etc. Although many of these “bits” exists, our focus is on the cordless drill itself, therefore, our discussion will not directly involve the use of these “bits” but the role the drill plays in spinning them and what is required from the drill.

In terms of average customer use we found that users have very basic needs from cordless drills. Users want their cordless drill to have a battery that lasts a long time or has a very quick recharge time because it becomes major inconvenience to have to stop a project just to recharge battery. For continuous use over the maximum amount of time the battery allows the drill design should be ergonomic, light-weight, and yield low vibration/noise as to not cause the user any discomfort, such as blistering, joint swelling, or arm soreness. Other average customer needs are maximum power, easy and relatively intuitive use, and the ability to use the drill in tight spaces, awkward corners, or obstructed areas. Ultimately, a cordless drill should be functional enough to allow a user to get a small project completed in a more efficient manner than using hand-tools.

The design of a cordless drill requires its use to have a clear advantage over its hand tool equivalent along with being able to perform in ways its corded counterpart could not. Cordless drills must have power to generate necessary amounts of torque for what are deemed average use functions in a quicker and significantly easier manner than a hand tool. Durable and reliable enough to with stand prolonged repeated use without failure or harm to the user. Markings and labels on the tool must be adequate enough to allow an inexperienced average person to understand and use. Battery life and recharge time should optimize to be as long and short (respectively) as possible with 2 hour for each being a reasonable standard. Cordless drills must provide sufficient power while being portable and lightweight in order to perform functions that mandate use in areas where corded or pneumatic drills are an inconvenience.

This information was gathered through research involving talking to individuals familiar with using cordless drills, observing those unfamiliar with drills try to operate them, and our own personal expertise. Later we will discuss special use scenarios, but in general we determined the largest groups of users use small cordless drills for personal non-commercial small projects, including home-improvement, hobbies, etc. Our user needs and product requirements reflect this user group and how cordless drill design needs to be focused around reliability and user convenience. Table 1-1 summarizes the top five areas of concern for customer need and product requirements.

Table 1-1: Summary of top 5 Customer Needs and Product Requirements

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