The process of cutting holes into materials or surfaces of the earth by use of drilling machines is known as drilling. The machines contain drill bits that revolve are variable rates. The drill has to be pressed against the workpiece and then revolved. There are different mechanisms for ejecting the resultant chips that are created from inside the cut holes.
The holes produced vary in size, shape, depth, and other characteristics depending with various factors. Some among the factors include size of the drill bit, speed of rotation, purpose of the hole, and nature of the material or soil among others. There are many types of drilling. The most common ones are microdrilling, deep hole, spot, center, gun, trepanning, and vibration drilling. Deep hole drilling machine is just one kind of machines used for this process.
Spot boring refers to a kind of boring operation that is performed as part of preparation before the actual boring starts. As such, the holes drilled in spot boring only work to guide the team when making the actual holes. They follow the holes to make other larger holes. Spot holes are usually drilled only halfway or to a much lesser depth just to provide guidance. The actual boring operation therefore comes out perfect and precise as needed.
Center boring is similar to spot boring because it is intended to prepare for further boring operations. The holes that are made from this process become centers of rotation for the boring operation that follows. The special drill used in this process is called a center drill. Just like there are different types of boring operations, there are different kinds of tools used. The choice of tool used depends on the process.
One of the special kinds of boring is referred to as deep hole drilling. This form of boring refers to the process of boring that produces a hole that has a depth that is ten times greater than its diameter. Special pieces of equipment are used for this process to ensure that the holes produced are straight and to maintain tolerances. Other factors considered in this operation include surface finish and roundness.
Various tooling techniques are used to achieve deep hole boring. Some among the most used technique are BTA and gun drilling. The distinction between these two is how they remove chips and how coolants are introduced. How chips are removed and how coolants enter can be either internal or external. Rotating tool and counter rotating workpiece are some of the methods for achieving straightness tolerance.
Skiving and burnishing, trepanning, bottle boring, and pull boring are among secondary tooling techniques used. Vibration is a relatively new technology. In this technique, small controlled axial vibrations break away chips originating from the workpiece. The vibrations are caused by the drill bit. Flutes on the drill then eliminate the chips.
Acoustic emission, torque, force, and vibrations need to be controlled. Control of those aspects is done using high tech monitoring systems. Cooling is achieved using a special kind of coolant.
The holes produced vary in size, shape, depth, and other characteristics depending with various factors. Some among the factors include size of the drill bit, speed of rotation, purpose of the hole, and nature of the material or soil among others. There are many types of drilling. The most common ones are microdrilling, deep hole, spot, center, gun, trepanning, and vibration drilling. Deep hole drilling machine is just one kind of machines used for this process.
Spot boring refers to a kind of boring operation that is performed as part of preparation before the actual boring starts. As such, the holes drilled in spot boring only work to guide the team when making the actual holes. They follow the holes to make other larger holes. Spot holes are usually drilled only halfway or to a much lesser depth just to provide guidance. The actual boring operation therefore comes out perfect and precise as needed.
Center boring is similar to spot boring because it is intended to prepare for further boring operations. The holes that are made from this process become centers of rotation for the boring operation that follows. The special drill used in this process is called a center drill. Just like there are different types of boring operations, there are different kinds of tools used. The choice of tool used depends on the process.
One of the special kinds of boring is referred to as deep hole drilling. This form of boring refers to the process of boring that produces a hole that has a depth that is ten times greater than its diameter. Special pieces of equipment are used for this process to ensure that the holes produced are straight and to maintain tolerances. Other factors considered in this operation include surface finish and roundness.
Various tooling techniques are used to achieve deep hole boring. Some among the most used technique are BTA and gun drilling. The distinction between these two is how they remove chips and how coolants are introduced. How chips are removed and how coolants enter can be either internal or external. Rotating tool and counter rotating workpiece are some of the methods for achieving straightness tolerance.
Skiving and burnishing, trepanning, bottle boring, and pull boring are among secondary tooling techniques used. Vibration is a relatively new technology. In this technique, small controlled axial vibrations break away chips originating from the workpiece. The vibrations are caused by the drill bit. Flutes on the drill then eliminate the chips.
Acoustic emission, torque, force, and vibrations need to be controlled. Control of those aspects is done using high tech monitoring systems. Cooling is achieved using a special kind of coolant.
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