The thing which has transformed and revolutionized the tools’ arena is a power drill. Just in a century, portable power drills have become an indispensable instrument for both household non-professionals as well as industrial professionals. The concept of a power drill is simple. Rotary motion is created using an electric motor or pneumatically driven system to power a sturdy drill bit to do the required task. A power drill, with a pistol, shaped body and trigger type controls, not only can drill holes of many kinds but can sand, grind and drive screws too. Power drills are available in many sizes and identified by the chuck capacity. The size of chuck, a set of jaws that grip the bit, indicates the largest diameter drill it can accommodate. A specially made key with beveled gear on its end tightens or loosens the chuck. Keyless chucks are also available with larger than traditional chuck key to be secured by hands.
Power Drills A Must Have Tools For Home Makers, DIY’ers, & Shop Woodworkers
The pneumatic drills we have seen in operation when roads or pavements are repaired. A jackhammer breaks up rocks and masonry with speed using compressed air. There are various other air-driven power tools such as drills, grinders, impact wrenches, sanders. Pneumatic power tools use air motors which are smaller than electric motors and have higher output to weight ratio. Pneumatic drills are not only efficient but productive too as the output increases with the tool speed. A pneumatic drill is ideal for harsh applications encountering hot and humid environment. Even if the drilling bit is struck, the tool stops working and does not get damaged by overload, unlike an electric drill that heats up and blows a fuse. Pneumatic drills need periodic maintenance to remain in peak working condition. Air compressors are heavy and noisy, and you need a hose to connect the compressor to your tools. A pneumatic drill is ideal for working in workplaces like metal fabricating plants, shipyards, power plants, and petrochemical plants.
The electrically powered drill is relatively less complicated than pneumatic drills. All you need is to plug them into the nearby power supply. A drill is operated by electric current drawn through a cord which needs to be protected from accidental damage or cut. Commonly, electric drills are often intended for a single-use. With attachments, the corded electric drills can be converted into a range of other power tools. Among many drills sizes available in a hardware store, ½-inch, ¼-inch, and 3/8-inch drills are more common in use. While ½-inch drills are popular among contractors as it can withstand heavy loads with more torque. The ¼-inch and 3/8-inch drills are lighter and quite suitable for household or DIYers needs. The corded power drills often feature variable speed that provides more flexibility.
Cordless Power Drills Are Here To Stay!
The cordless drill offers high mobility as an encased battery powers them. It offers you freedom from tethered cord or hose. With improved lithium-ion battery, cordless drills can perform almost equivalent to the corded tools. A cordless drill with 12 to 18 volts potential is suitable for household needs, however, while higher voltage batteries offered higher torque and sought after by the professional users. The amp-hour rating of a battery refers to its run time after which you have to stop for a recharge. A replaceable battery pack or recharging of existing battery can bring it back to action again. With brushless motors, battery operated drills have become more efficient with better run time.
Types Of Power Drills
There are many types of power drills in use. You need to select a right one according to your job. A skilled worker should only handle the power drills as they are quite hazardous and cause injury to the user or damage to the work-piece. Power drills are now designed ergonomically with adjustable side handles for more stability and less fatigue. Besides standard power drills, there are a variety power drill types available in a hardware store including
- Right-angle Drills with chuck mounted at a right angle to the drill body to work in tighter workspaces.
- Impact Drills for heavy duty driving tasks as impact provides more torque than a standard drill
- Hammer Drills or Rotary Drills combines rotation of drill to hammering action for heavy-duty jobs.
- Drill Press is a fixed type of drill mounted on a stand with handles which can be manipulated to give the drill and chuck vertically or horizontally movement with high precision.
What is important in selecting a power drill its feel. It should be comfortable with proper padding to adjust well with your fingers. While operating a power drill, all necessary precautions such as goggles, gloves and other personal safety equipment are exercised with proper cladding.