Drills
Drills
drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for making holes in various materials or driving screws. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting...
drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for making holes in various materials or driving screws. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting tool does the work of cutting into the target material. This may be slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling), crushing and removing pieces of the workpiece (SDS masonry drill), countersinking, counterboring, or other operations.

Drills are commonly used in woodworking, metalworking, construction and do-it-yourself projects. Specially designed drills are also used in medicine, space missions and other applications. Drills are available with a wide variety of performance characteristics, such as power and capacity.

Types

  1. Hand Drill
  2. Power Drill
  3. Cordless Drill
  4. Hammer Drill
  5. Magnetic Drilling Machine
  6. Rotary Drill
  7. Drill Press
  8. Geared Drill Press
  9. Mill Drill
  10. SDS Drill
More

Drills  There are 12 products.

Subcategories

  • Cordless Drills
    Cordless Drills

    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.

  • Corded Drills
    Corded Drills

    An electric drill is a drill which is driven by an electric motor. The invention of the electric drill is credited to Arthur James Arnot and William Blanch Brain of Melbourne, Australia who patented the electric drill in 1889. In 1895, the first portable handheld drill was created by brothers Wilhelm & Carl Fein of Stuttgart, Germany. In 1917 the first trigger-switch, pistol-grip portable drill was patented by Black & Decker.

  • Hammer Drills
    Hammer Drills

    hammer drill (or hammering drill) is a rotary drill with a hammering action. The hammering action provides a short, rapid hammer thrust to pulverize relatively brittle material and provide quicker drilling with less effort. These tools are usually electrically powered, and increasingly powered by batteries. The same technology is also used in electric "demolition hammers", also known as "chipping guns" or "breakers".

    Lower power units are usually called "hammer drills," typically have a "cam-action" or "percussion" hammering mechanism, in which two sets of toothed gears mechanically interact with each other to hammer while rotating the drill bit. With "cam-action" drills, the chuck has a mechanism whereby the entire chuck and bit move forward and backwards on the axis of rotation, the motion is tied to the rotation of the chuck. This type of drill is often used with and without the hammer action but it is not possible to use the hammer action alone as it is the rotation over the "cams" which causes the hammer motion. These units are usually smaller and are commonly powered by cordless technology. They are not typically used for production construction drilling, but rather for occasional drilling of concrete or masonry.

    Ancient China's principal drilling technique, percussive drilling, was invented during the Han dynasty. The process involved two to six men jumping on a level at rhythmic intervals to raise a heavy iron bit attached to long bamboo cables from a bamboo derrick. Utilizing cast iron bits and tools constructed of bamboo, the early Chinese were able to use percussion drilling to drill holes to a depth of 3000 ft. The construction of percussion drilling machines took more than two to three generations of workers. The cable tool drilling machines developed by the early Chinese involved raising and dropping a heavy string of drilling tools to crush through rocks into diminutive fragments. In addition, the Chinese also used a cutting head secured to bamboo rods to drill to depths of 915 m. The raising and dropping of the bamboo drill strings allowed the drilling machine to penetrate less denser and unconsolidated rock formations.

  • Right-Angle Drills
    Right-Angle Drills

    A right-angle drill is a power tool that features a chuck that is oriented at a 90-degree angle compared to the rest of the tool. In tool terminology, a “chuck” refers to the clamp that holds the bit or other tool on the drill. This type of drill is most commonly used by plumbers and electricians because of its ability to work in tight wall spaces, though many trades can and do benefit from this sort of chuck design. Hobbyists and home project enthusiasts are among the most common users outside of the professional construction industry, for instance. There are a number of models to choose from in most places. Some manufacturers have designed their angled drills with multiple speed settings that enable the tools to bore through many types of material quickly and efficiently, and the materials and strength capabilities can vary, too. People interested in purchasing this sort of tool are usually wise to start with a bit of market research.

    Basic Concept

    The main idea of any drill is to lend power to what would otherwise be the manual force of boring a hole into some substance. Manual drilling is possible in many instances, but often requires a lot of strength and is normally slow going. Powered drills, whether they derive their strength from electricity or batteries, normally provide a fast and efficient way to drill holes of uniform size.

    Drills normally come in a couple of different sizes and styles. A specifically right-angle drill is, as its name might suggest, a drill that forms what is known in geometry as a right angle: that is, an angle with two perfectly perpendicular sides that measure 90°. This sort of angled bit isn’t always ideal for every situation, but can be helpful in a variety of different drilling scenarios since it allows users to reach into corners and into other small spaces that the tool itself might not be able to penetrate.

    Core Uses

    Construction is usually the most popular setting for this sort of tool. During residential and commercial construction, plumbers and electricians have to drill hundreds of holes through wall studs, floor joists, flooring, and even roofing materials in order to do their jobs. These areas are often in tight spaces, and it was for this purpose that the angled drill was invented. The hole sizes required by these tradesmen and women can be quite large in order to accommodate large-diameter drain and conduit pipes, so these drills must produce enough power to bore through a lot of material in one single pass. Corded and cordless models are also available for convenience purposes.

    -- Wisegeek

  • Impact Drills
    Impact Drills

    Hammer Drill vs. Impact Driver

    A hammer drill’s body style is similar to that of a drill-driver. However, a hammer drill is built to add extra power and a hammering action. The direction of force is different, though. The force of the hammer drill is applied directly to the bit as it hits the medium as if there was a hammer being smacked into the back of the drill as it presses forward, almost like a jackhammer. This helps break up a harder material with the bit tip while the spirals of the drill bit spin the debris out of the hole you create. Hammer drills are usually used for work with stone and concrete and should be used with masonry bits only.

      
    There are two modes of operation on most hammer drills. In addition to its normal action, the hammer function can be turned off. This lets the drill function as a standard drill-driver for use with wood or metal. This can be useful when you are unsure what the material is you’ll be drilling – if, for example, you are unsure if there is wood or concrete behind a wall – but since a hammer drill is more expensive and heavier than a standard drill, it would not be an advisable tool for lighter household tasks.

    Brushed vs. Brushless


    One major consideration when choosing an impact driver or a drill-driver is to get a tool with a brushed or brushless motor. Due to friction produced in its operation, a brushed motor is slightly less efficient than its brushless counterpart. Brushless motors operate with without friction, leading to a number of benefits: more power going to the tool, precision motor and power control, more battery run time, less heat generated during use, and a longer-life battery. In addition, brushless stools require less maintenance. Due to the friction produced by contact, the parts in a brushed tool may occasionally need to be replaced. However, these advances in brushless technology come at a higher cost.
      
    If your tools will get heavy and regular usage, investing in brushless may be a great value in the long run, but if you only break out your tools box for occasional household and DIY projects, brushed tools can serve you well and save you upfront costs. See our guide on types of drills for more information. 

    Drill, Impact Driver or Hammer Drill


    In all, when looking at an impact driver versus a standard drill-driver, the answer to the common question of which type to purchase is both. For the avid DIY-er, they can be valuable additions to your toolbox to help tackle a wider array of projects. Anyone who works extensively with masonry, either professionally or as a hobby, can benefit from owning their own hammer drill.

    The two types of drills are sometimes sold together in combo kits which can be a great way to acquire both at a good value. 

    -- Home Depot (USA)

  • Drill Kits
    Drill Kits

    For most people simply looking for help making holes for hanging picture frames, repairing damaged furniture, or completing a few fun DIY projects around the home, a set of general purpose drill bits makes perfect sense. As long as you will only be drilling into wood, drywall, or composite materials like MDF (medium density fiberboard, a material commonly used in lower-cost shelving and furniture), then a basic set of twist drill bits, those with a spiral shape along their shaft, will get the job done with aplomb.

    For more complex projects involving harder materials, you absolutely must use a specialized drill bit. Try to send a spiral drill bit into a piece of tile, for example, and you will crack the tile into pieces. Try to use a twist drill bit on a thicker piece of metal, and you will waste your afternoon, and likely ruin the bit at the same time.

    While a set containing lots of different varieties of drills bit might seem like a great idea, if you're never going to drill through sheet metal or glass, there's no need to look for bits capable of so doing. Instead buy a set that meets your current needs with bits in a range of sizes (starting with a narrow bit and working a hole wider and wider is the best way to go, after all) and then consider adding a single specialty bit later if needed for a specific purpose.

  • Bench Drills
    Bench Drills

    The bench drill is a smaller version of the pillar drill. This type of machine drill is used for drilling light weight pieces of material. The example below shows the machine operator drilling a thin piece of perspex. The perspex is held safely in a hand vice which is held in the hand. NEVER hold work directly in the hand when drilling. The on and off buttons are found on the left hand side of the machine and the handle controlling the movement of the drill on the right. Most bench drills will also have a foot switch for turning off the drill.

    The hand vice is one safe way of holding material whilst drilling. It has two jaws that are closed by turning a wing nut. In the example the perspex is held in the vice and it also rests on scrap wood on the table. The height of the table is set by adjusting the height adjuster lever. When drilling the table should be moved quite close the the drill bit so that the distance from the drill bit to the material is small. The guard should always be used. This is the first line of defence if the material being drilled breaks or shatters. Wearing goggles is the second line of defence.

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