Your Leading Ningbo T & X Machinery Co., Ltd. Supplier

 

Founded in 2004 and located in Ningbo city, east seaport of China
T & x Machinery has been committed to providing customers with various OEM products and offering services according to diversified processes like forging,casting and CNC machining.Meanwhile,T&X Machinery pays high attention to its own product research & development.

 

 
Why Choose Us?
 
01/

High quality
Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.

02/

Ompetitive Price
We offering a higher-quality product or service at an equivalent price. As a result we have a growing and loyal customer base.

03/

Rich experience
Our company has many years of production work experience. The concept of customer-oriented and win-win cooperation makes the company more mature and stronger.

04/

Global shipping
Our products support global shipping and the logistics system is complete, so our customers are all over the world.

05/

After-sale service
Professional and thoughtful after -sales team, let you worry about us after -sales Intimate service, strong after -sales team support.

06/

Advanced equipment
A machine, tool or instrument designed with advanced technology and functionality to perform highly specific tasks with greater precision, efficiency and reliability.

  • HDF Drag Bit
    Machining Surface roughness: Ra1.6 or better. Material Standard: OEM Customized/Customer′s Drawing
What is Chevron Drag Bit?

 

Chevron drag bits are the other typical style of drag bits. Three or four wings create the cutting structure of chevron bits in a radial formation. Each wing is pointed at the tip and widens towards the base. Each wing forms its own chevron shape, as the name indicates. Like step drag bits, chevron bits can have three or four wings. The tips of the wings are often made of tungsten carbide or another highly-durable material to strengthen the bit and attack difficult rock formations.

 

What is Step Drag Bit?
Step drag bits are one common type of drag bit and one of the most common bit types used worldwide. As the name indicates, the cutting structures of these bits feature a stair-stepped design. They are pointed at the top, stairstep down, and become wider at the base of the bit. Step-type drag bits can have three or four wings. Four-wing bits are typically more durable and longer lasting. You’ll also find them more precise and able to drill a straighter hole.

Benefits of Step Drag Bit
 

 

1.Using a step drill bit, you can obtain your desired, accurate clean holes.


2.A step drill bit is much effective, unlike drilling a hole with a traditional drill bit. As it requires less maintenance.


3.Their variable diameters make them much faster than standard drill bits to shape large holes.


4.Step drill bit work incredibly well on metal sheets.


5.It is easy to drill into soft materials because of the lower acute cut angle that is a feature of the step drill bit.
This can drill aluminum, brass, and plastics very smoothly. 

 

Application of Chevron Drag Bit
 

Drilling in both soft and medium formations, including shale, sandstone, limestone, other rock formations, casings, and concrete.

Drilling slowly in harder formations and maintaining a consistent borehole – 50 to 60 rpm is typical.

Drilling for water wells, mining, geothermal, environmental, and exploration drilling.

Application of Step Drag Bit

 

1.The main application for step drills is to drill through sheet metal. lt is very simple and easy to use and will provide a very smooth clean cut.

 

2.Step drills are also able to drill through wood, but it needs to be thin in order for the step drill to work.

 

3.They can also drill through acrylic and plastics, and it provides a better finish compared to standard twist drills, as it prevents cracks from appearing in the plastic.

 

4.Deburring and chamfering holes is also possible with step drills. To debur, you simply touch the material with the beveled edge of the next step on the bit. To chamfer, allow the wider step (next step up) to cut slightly deeper into the material.

 

5.One type of tradesmen that benefits massively from step drills are electricians.These are must have accessories for electricians as they can drill a variety of different size hole in fittings, panels, and junction boxes etc.

 

6.Stepping drill bits are also popular accessories in the automotive industry, allowing technicians easy ways to drill a variety of different sized holes without changing the accessory. It is especially used when working on body work and electrics such as sound systems in cars.

 

7.These accessories are also used in HVAC (heating, ventilation, and air-conditioning) applications. This type of work requires a lot of holes to be drilled at different widths, so the step drill make work efficient, and it is a time saver.

 

Material of Chevron Drag Bit
 

 

Drag bits, including chevron bits and step bits, are most often made of alloy steel, but they can be manufactured using tungsten carbide. Some are solid cast, and others are welded. The construction of tungsten carbide bits makes them more durable.

 

Material of Step Drill Bit
High Speed Steel - The step drill bit is made from high speed steel of high hardness and good wear resistance. Surface is coated with titanium which give the drill bit a beautiful gold color and will not fade easily.

Process of Step Drill Bit

 

Use protection shield while drilling
A: Always wear eye protection (goggles) while drilling wood with a step drill bit as wood scrapings and splinters are going to fly in your face.
B: Wear gloves so that your hands are not affected by any shavings or pieces that bounce off the surroundings.
C: Also, make sure the electrical outlet that you have plugged in is secured.
D: When dealing with power tools, don't throw caution to the wind. In favor of protection, it is often better to postpone work.

 

Know your drilling surface
You must distinguish step drill bits between different types of surfaces while working on metal, wood, or even an alloy. You would need a separate step drill bit for stainless steel, a separate step drill bit for wood, and a separate one for aluminum or iron.

 

Place the step drill bit at right position
At the exact point where the hole is to be drilled, you need to position the tip of the center punch. If you have the exact position, you can strike the blunt end of the center punch with a hammer. This will have a clear location for the positioning and capture of the drill bit. It will make sure that the drill bit does not swing so that you can operate in the right position.

 

Secure the bit into the drill motor
First, ensure that the drill bit is matched with the center mark and press down on the trigger of the drill. Make sure that the tiny drill bit passes through the metal sheet or wooden sheet all the way through.

 

Take frequent intervals
Putting constant pressure on the drill bit is not appropriate. Therefore, when you are drilling take short intervals. This is not only to give the machine rest, but it is also to add some tapping fluid to keep the drill cold. It may produce sparks or damage the surrounding material if it overheats.

 

Removal & cleaning
You must remove the step drill bit from the motor after the drilling. To remove any metal shavings, you should then continue to clean all the drill bits and the motor. Also, clean these metal shavings from the hole that you have drilled as well.

After using a step drill bit , you must well polish it before store. For storage use the standard drill bit container. This will secure the drill bits more properly for further usage and extend the life span.

How to Maintain Step Drill Bit

 

Use magnetic strips

Using magnetic strips is one of the easiest ways to store and organize drill bits. You can apply these strips on toolboxes, walls, or shelves and organize your drill bits easily. This method allows you to see all your bits at once, making it easy to find the one you need.

Sort by size

Another effective method for organizing drill bits is to sort them by size; put all your small and large bits together for easy selection. You can use a tray or create compartments to keep them sorted in your toolbox.

Label everything

Labeling your drill bits will make your life much easier when searching for a specific size or type. The best tagging method for your drill bits is a permanent marker or a label maker. You can easily identify each bit’s size and type and organize them in a way that makes sense. Setting up a labeling system saves you time in your projects!

Use a drill bit sharpener

The secret to prolonging your drill bit’s lifespan is through sharpening them before storing them. A dull bit will make your drilling take longer and could damage the workpiece. Invest in a good drill bit sharpener and give your drill bits a little love now and then.

Keep drill bit sets together

The best way to organize your drill bits is storing kits together. Avoid mixing and matching bits from different sets, as this leads to confusion and disorganization. Keeping the set together is better, even if it means buying a larger storage box or container.

History of Drill Bits

 

Drill bits date back to prehistoric times. Historians believe that as early as 35,000 BC Homo sapiens discovered the usefulness of rotary tools for boring into materials. Early man used smooth sticks with a flint point attached to create the necessary holes. By the late Paleolithic era, man moved on from using flat sticks with stone points to bone, shells, and even antlers to do their work.

Ancient Egyptians used wood as their primary drill bit instead of bone and shells. The user attached strings to the end of a bow then wrapped the remaining end around a stick. The bow would then be moved back and forth to create a rotary motion. While the primary purpose of the wooden drill bit of this era was to build a fire, there is evidence that Egyptians also used these drills in woodworking, dentistry, and stone-working.

It was not until the 13th century that man began using metal pieces as drill bits. Inventors discovered that if they used pieces of copper inside of the tubular stick, they could drill a hole by grinding the outer section of the area. This discovery allowed them to minimize the damage to materials when making the desired size hole.

Since the discovery of metal tooling, drill bit sizes and styles have evolved. Drill bits come in the traditional spiral shape as well as in conical, core, and spade shapes. The diameter and length for each of these types varies by the intended use. Additionally, materials used to make the bits range from high and low carbon steel to carbides and diamonds.

 

How Does a Step Drill Bit Work?
 

 

Step drills are extremely easy to use; you simply put it into your drill, like every other drill bit. How deep you drill through the material depends on how wide you need the hole to be. The diameter of each step is marked on the side of the step drill, allowing you to easily create the correct size hole.

You may want to take regular breaks when drilling, especially in metal. This is to prevent overworking the drill or overheating the step drill bit. An overheated drill bit blunts quickly, resulting in a shorter life span of the accessory.

 

Our Factory
 

Founded in 2004 and located in Ningbo city, east seaport of China, T & X Machinery has been committed to providing customers with various OEM products and offering services according to diversified processes like forging.casting and CNC machining. 

 

20200519155112e9d863a1542b4295a4d362d0788ca5a0
202005271106166772ac3e35b2454b80e43da20be3d421

 

Our Certificate
 

20211019142919bf23dcd83aca47dcbd92c7b5ea32605c

 

FAQ

Q: What is the purpose of a step bit?

A: Step drill bits are mainly used to cut holes in metal. They are also used to drill wood, acrylic, and other plastics, but one limiting factor of the step drill bit is that they are only suitable for cutting thin materials, such as sheet metal.

Q: What is a drag bit used for?

A: Uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes because they produce cuttings that are easiest to penetrate.

Q: Can you use a step drill bit on wood?

A: Step drills are ideally suited for cutting metals, plastics and wood up to 4 mm, for stainless steel up to 1.5 mm. The production of step drills by using the CBN process enables measuring and shear cutting edges due to the higher hardness during the grinding process.

Q: What is the advantage of a step drill?

A: As you now know, step drills have multiple diameters in one tool. They offer several benefits, including increased efficiency, improved accuracy, reduced chatter, and versatility. They are commonly used in drilling applications for metal and other hard materials.

Q: How thick can you drill with a step bit?

A: 1/4 Of an inch thick
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.

Q: Can you use a step bit in a drill press?

A: Step drills are used with portable drilling machines, such as cordless drill drivers or rotary drills, and also drill press (pillar drill) that can accommodate the shank.

Q: What is another name for a step drill?

A: Unibit
A unibit (often called a step drill bit) is a roughly conical bit with a stairstep profile. Due to its design, a single bit can be used for drilling a wide range of hole sizes. Some bits come to a point and are thus self-starting. The larger-size bits have blunt tips and are used for hole enlarging.

Q: What is the difference between a step drill bit and a regular drill bit?

A: Regardless, most step drill bits can create clean holes in sheet metal. Step drill bits are durable. They are often made of high-quality metal, such as stainless steel or carbon steel. Standard drill bits, on the other hand, may or may not be made of high-quality metal.

Q: Are step drill bits any good?

A: Step drill bits are great for cutting through plastic, it offers a very smooth cut and finish without damaging the hole or material. They are also great at cutting through thin metal, as it cuts it very smoothly compared to twist drills, and slowly shaves off the metal leaving a smooth beveled edge to the metal.

Q: How do you keep a drill bit from walking?

A: To keep a drill bit from wandering when drilling in metal, put the point of a center punch or nail set on the spot you want the hole, then tap it with a hammer to make a small dent in the metal. Chuck the drill bit in the drill, place the bit on the dent, and drill the hole. Watch the video above to find out more.

Q: What are PDC drill bits?

A: PDC (Polycrystalline Diamond Compact) drill bits are a type of drilling tool used in the oil and gas industry, as well as in mining, construction, and other industries. These drill bits are designed to cut through hard materials such as rock, shale, and sandstone with greater efficiency than traditional drill bits.

Q: Why use an auger bit?

A: Auger drill bits are bits used to drill holes into wood. They are commonly used for boring holes into bulkheads and general timber applications. These drill bits come with a spiral drill bit head which, when drilling, is designed to pull the bit into the wood so you do not have to apply excessive pressure.

Q: What are the different uses of drill bits?

A: Drill bits make holes in a variety of different common materials. These include different types of wood, metal, plastic, ceramic tile, porcelain and concrete. Different types of drill bits made for steel, aluminum, copper, cast iron, sheet metal, fiberglass, brick, vinyl flooring and more are also available.

Q: What is a drag drill bit?

A: A drag bit is a drill bit usually designed for use in soft formations such as sand, clay, or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling.

Q: What are the spiral drill bits called?

A: Twist drill bits
Twist drill bits, also called fluted bits, are used on light metal, wood, plastic, metal, ceramic and masonry.

Q: Which is better carbide or HSS?

A: Carbide tools can operate at much higher speeds and feeds than HSS tools, which can significantly reduce the cutting time and increase the productivity. Carbide tools also have a higher wear resistance than HSS tools, which means they will last longer and require less replacement.

Q: What is a drag bit in drilling?

A: A drag bit is a drill bit usually designed for use in soft formations such as sand, clay, or some soft rock. However, they will not work well in coarse gravel or hard rock formations. Uses include drilling water wells, mining, geothermal, environmental and exploration drilling.

Q: What is the strongest material for drill bits?

A: Carbide bits
Carbide bits are the strongest drill bits material and can cut through hardened steel. But if they are not available, titanium and cobalt drill bits can also be used. However, drilling with either of these bits will take longer than drilling with a carbide drill bit.

Q: What material are drill bits made out of?

A: High-speed steel
Drill bits are typically made of high-speed steel (HSS), which is a form of tool steel. Other materials used for drill bits include cobalt steel alloys, carbide, and titanium-coated HSS.

Q: What are Dewalt drill bits made of?

A: Black & Gold metal drill bitst are made of heavy-duty High Speed Steel for drilling into a variety of materials including plastic, wood, and metal. Each bit features a 135° split point tip design to help reduce walking. 

As one of the most professional drag bits manufacturers and suppliers in China, we're featured by durable products and good service. Please rest assured to buy high quality drag bits from our factory. Also, customized service is available.

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