Drilling projects can become tricky at times, especially when drilling holes of varying sizes. You must constantly remove drill bits of various sizes to match them with the holes required for your job. This consumes valuable work hours that could have been used to complete your job more quickly.
What if I told you that it could all be done with just one drill bit? Drilling multiple-sized holes in sheet metal has become much easier with the step drill. A step drill, often called a stepped drill bit or step bit is a conical-shaped drill bit with gradually increasing diameters. A sharp groove on one side of the tool serves as a cutting edge and has several levels or steps with increasing diameters from tip to end.
The Process : Drilling Into Metal Using A Step Drill
The step drill can speed up the cutting process since it eliminates the need for a pilot hole and lessens the need to move between a variety of twist drill bits. Simply follow the methods outlined below when drilling a hole in metal.
• Prepare Your Safety Equipment
• Drilling Using A Step Drill
How Do Step Drill Bits Work?
Step drill bits are used to drill metal up to 1/4 of an inch thick. Step drill bits are designed to enlarge a hole as the bit drills through the sheet metal. Each step on the bit is larger in diameter than the step before. Step drill bits utilize different parts of the bit to make a precise hole. Here are the other parts of a step drill and their function.
• Point angle
The point of a drill bit is the most crucial portion. That individual is responsible for making a hole. The step drill's point angle is found at the drill's head. It is the angle formed by the two cutting edges. The head of a step drill is similar to a twist drill. The step drill needs a point angle to center itself in the material.
• Profile of flute (groove profile)
The groove profile serves as a channel for chip collection and removal. Straight or spiral grooved step drills are available. Compared to the straight groove, the spiral groove significantly improves chip removal. It is vital to remove the chips quickly since this may result in significant heat buildup and cause the drill to burn out. By removing chips properly, the service life of your drill bit can be greatly increased.
It goes into the spindle and holds the drill bit into place. You should make sure it's adequately attached before drilling. The shank can be either of these two types: Straight or tapered.
The steps gradually increase in diameter; for example, a step drill size 1 has nine steps with diameters ranging from 6.0 to 20.0 mm. These sizes determine the diameters and there are usually 13 steps.
Common Types Of Step Drills
• High-speed steel (HSS) - has excellent wear resistance and can be utilized in a wide range of general-purpose applications for both ferrous and nonferrous materials.
• Titanium Nitride (TiN) - is a multipurpose coating that improves chip flow in softer materials by increasing chip flow. As a result of the heat and hardness resistance, the tool can operate at faster speeds than uncoated tools.
Please feel free to speak with one of our specialists about the best drill bits for your specific application. Then, check out our high-quality step drills to make your next construction project go more smoothly. RUKO Shop UK provides an extensive assortment of step drills to choose from when it comes to metalworking.
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