Deep Hole Drill
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Deep Hole Drill
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Hole Specialists Inc. is a leader in the deep hole drilling industry, and it provides services in a high-quality, safe and cost-effective manner.
Services include gun drilling, deep hole drilling, honing services, pull bore, trepan, straighten and turning.
Deep hole drilling is used in manufacturing for machinery and creates holes whose diameters range from .2-2000 millimeters. The depth of these holes is often more than triple the diameter. This kind of drilling looks different from typical drilling because deep-hole drilling usually requires a cooling lubricant. This cooling lubricant must be utilized at high pressure and in high amounts. This lubricant also gets rid of chips from the cutting zone, which makes the process itself more efficient.
A deep hole drilling machine is used to cut specific-sized holes into all different kinds of materials. Two types of tools used to aid in deep hole drilling include gundrilling and BTA.
Deep hole drilling is used for multiple different kinds of materials. The process itself requires particular tools to ensure a high pressure coolant and to be sure the D:d ratio is superior to what a typical computer numerical control (CNC) could achieve.
(The D:d ratio refers to the depth to deep hole drilling ratio.) A couple of examples of D:d include 10:1, 20:1 and 40:1.
One of the benefits to using deep hole drilling is that manufacturers can feel confident that their production will be both reliable and time-efficient.
There are a few main parts to the deep hole drilling process, and these include a rotating tool, rotating workpiece and counter-rotating tool and workpiece. The rotating tool is used for non-symmetrical elements or those whose holes are not in the center. The rotating workpiece cutting speed differs depending on the part being worked with. The counter-rotating rotating and workpiece is the best method for round parts who have a centered and deep hole.
Hole Specialists Inc. has 12 CNC gun drilling machines, 6 machines with counter rotate capabilities and 8 small capacity machines .078”-.750”. The company also has 2 Large capacity counter rotators, as well as 3 Large hole on center machines able to handle larger ODs and holes up to 8.250”.
The hole types include thru holes, blind holes, intersecting holes and angle holes, among others. The company maintains .001 per inch drift and +/-.001 on hole size.
Hole Specialists Inc. also specializes in prototypes. It also offers a Quality Assurance Policy.
Hole Specialists Inc. serves industries including military, automotive, food, printing, mold manufacturing, steel, manufacturing, composites, medical, oil & gas and job shops.
Hole Specialists Inc. is located in Tomball, Texas and has been satisfying customer demands since 1993.
Contact us for your deep hole drilling consultation.
Hole Specialists Inc. is located in Tomball, Texas and one of its services is deep hole drilling.
Deep hole drilling is used in many different kinds of materials.
The deep hole drilling process includes the rotating tool, the rotating workpiece and the counter-rotating tool and workpiece.
The available services include deep hole drilling, pull bore and honing services, among others.
Deep hole drilling is composed of two different processes: BTA drilling and gun drilling, among others.
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1445 Commerce Avenue Brookfield, WI 53045
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These spiral-flute deep hole carbide drills possess an advanced flute geometry designed for optimal chip evacuation from deep holes in a wide range of materials. To provide the cutting edge with an optimum coolant supply, the tools possess a maximized coolant duct profile. It ensures an efficient coolant supply to the cutting edge as well as excellent chip evacuation. The design features of this drill – with the appropriate cutting parameters – result in chips that are evacuated problem-free even from deep holes. Chip packing and a subsequent jamming of the tool is effectively prevented.
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Stainless Steel
(434)
Grey cast iron, malleable and spheroidal iron
(434)
Aluminium and other non-ferrous metal
(434)
Special, super and titanium alloys
(434)
Hardened steel and chilled cast iron
(434)
What Is Deep Hole Drilling and How Does It Work?
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Many industrial applications involve the creation of a “deep hole” where the depth is ten times the diameter. Specialized machinery with a specific deep hole drilling tool is required to drill straight holes.
The practice began with the creation of gun barrels but later expanded into the medical tooling industry as well as the creation of plastic injection molds along with many others.
There are two primary methods for deep hole drilling: BTA drilling and gun drilling. Both use a type of coolant to help get rid of material chips during the cutting procedure, even at extreme depths. The result is a specialized cutting instrument that can complete jobs other types of drills cannot.
Whether you’re using specialized gun drilling tools or just a regular CNC milling machine, the issue of chips and how to remove them from the drilling process is part of the challenge of deep hole drilling.
If left unattended, chips can jam the drill, harm the surface of the hole, or otherwise cause inefficiencies. Machinists carefully choose the type of tooling and coolant for better chip control and to help solve this problem.
The “peck” maneuver should be repeated more often the deeper into the hole you go. The further the retraction, the more chips are evacuated, but the speed of the entire process is slowed down as well. Above all, you want to make sure no chips end up at the bottom of the hole, or you risk making the drilling process more challenging.
This method of deep hole drilling was first created in the 1940s by the Boring and Trepanning Association. A hollow tool enters the hole and pushes pressurized coolant onto its outside during the drilling process. Excess material is removed through the internal hole in the drill.
A gun drilling machine, in contrast, uses a long, thin cutting instrument for straighter results. The drill comes in two parts: a flute cutting edge and a coolant hole separate. Just like with the BTA process, the material is removed effectively during the gun drilling process.
Depending on your precision needs, you might be able to get the job done with just a CNC gun drilling machine. Otherwise, specialized equipment is required for more accurate work.
BTA drilling, by nature of its design, can achieve far higher drill feed rates than gun drilling, partly thanks to its efficient chip evacuation system. It can also work with larger diameter holes: from 20 to 200 millimeters.
Gun drilling, however, works best in smaller diameter hole sizes of up to 50 millimetres. It’s also ideal for extremely deep holes.
The takeaway here is that your plans for deep hole drilling should depend on the nature of the work. G-Code programmers must implement a variety of factors to create a custom drilling cycle:
Whether you’re using gun drilling or BTA drilling, having these considerations in mind is important for the machinist to achieve an efficient process without risk to the equipment.
Deep hole drilling applications are used across a wide range of industries, from oil and gas, aerospace, to other heavy industries. If you are working on a deep hole drilling project and are looking for a partner who provides high precision
deep hole drilling services , then GN is the right partner for you.
Here at GN, we have the tools and expertise you need to get your next deep hole drilling job done right.
Get in touch with us today .
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