Drilling refers to the process of cutting holes into solid materials using drill bits attached to the drilling machine. The process involves pressing the machine onto the material that needs to be drilled and then rotating the drill bit several revolutions per minute. Revolutions can range from a few tens to several thousands per minute. As the process continues, chips are cut off the materials to produce the hole.
The holes made differ in their depth, shape, size, and other features depending on a number of factors. Among the factors that determine the characteristics of holes include speed of drill rotation, nature of soil or material, size of drill bit, and purpose of the hole. There exists many different kinds of drilling. Those that are commonly used include microdrilling, deep hole, trepanning, vibration, spot, center, and gun drilling. Deep hole drilling machine is among the many kinds of machines used in boring operations.
Spot boring is usually part of the preparation process prior to the start of the actual boring. As such, the holes resulting from spot boring are only meant to direct the team during the actual boring operation. The team performing the task is guided by the spot hole as they drill larger holes. Spot holes are usually relatively shallow sometimes extending just a short distance from the surface since their only purpose to guide. Spot holes assist in achieving precision and perfection the actual boring.
Center boring is performed to prepare for further boring activity just like in spot boring. The resultant holes of center boring function as centers of rotation for boring operation that are performed afterwards. This process makes use of a special kind of drill known as a center drill. One should know that there are different tools used for the various kinds of boring operations. The nature of the process is what determines the choice of the tool to be used.
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.
Several tooling techniques are employed in achieving deep hole boring. Gun and BTA drilling are among commonly utilized techniques. BTA and gun boring differ in how they remove chips and take in coolants. External and internal chip removal and coolant entry are the two forms of removing chips and taking in coolants. Rotating the tool and counter-rotating workpiece are the two major ways of attaining straightness tolerance.
Secondary tooling methods employed comprise of skiving and burnishing, pull boring, trepanning, and bottle boring. The latest technique is called the vibration boring. This method employs small controlled axial vibrations from drill bits to break away chips coming from workpieces. The generated chips are then removed via flutes on the drill.
Acoustic emission, vibrations, torque, and force, all must be controlled. The controlling of these aspects is achieved using high tech monitoring systems. Additionally, special coolants are used to assist with the operation.
The holes made differ in their depth, shape, size, and other features depending on a number of factors. Among the factors that determine the characteristics of holes include speed of drill rotation, nature of soil or material, size of drill bit, and purpose of the hole. There exists many different kinds of drilling. Those that are commonly used include microdrilling, deep hole, trepanning, vibration, spot, center, and gun drilling. Deep hole drilling machine is among the many kinds of machines used in boring operations.
Spot boring is usually part of the preparation process prior to the start of the actual boring. As such, the holes resulting from spot boring are only meant to direct the team during the actual boring operation. The team performing the task is guided by the spot hole as they drill larger holes. Spot holes are usually relatively shallow sometimes extending just a short distance from the surface since their only purpose to guide. Spot holes assist in achieving precision and perfection the actual boring.
Center boring is performed to prepare for further boring activity just like in spot boring. The resultant holes of center boring function as centers of rotation for boring operation that are performed afterwards. This process makes use of a special kind of drill known as a center drill. One should know that there are different tools used for the various kinds of boring operations. The nature of the process is what determines the choice of the tool to be used.
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.
Several tooling techniques are employed in achieving deep hole boring. Gun and BTA drilling are among commonly utilized techniques. BTA and gun boring differ in how they remove chips and take in coolants. External and internal chip removal and coolant entry are the two forms of removing chips and taking in coolants. Rotating the tool and counter-rotating workpiece are the two major ways of attaining straightness tolerance.
Secondary tooling methods employed comprise of skiving and burnishing, pull boring, trepanning, and bottle boring. The latest technique is called the vibration boring. This method employs small controlled axial vibrations from drill bits to break away chips coming from workpieces. The generated chips are then removed via flutes on the drill.
Acoustic emission, vibrations, torque, and force, all must be controlled. The controlling of these aspects is achieved using high tech monitoring systems. Additionally, special coolants are used to assist with the operation.
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