Drill bit geometry has several characteristics buy drill bit grinder

Why are twist drill bit especially easy to wear?

There are several disadvantages to the twist drill:

(1) the internal and external difference of the front Angle values of the points on the main Cutting Edge of standard twist drill is too large. The front Angle of the main cutting edge at the outer edge of the bit is about +30; The front Angle near the core is about -30.

Close to the front Angle of the drill center is too small, causing the chip to deform large, the cutting resistance is large; Near the outer edge of the anterior horn is too large, in processing hard materials, the strength of the cutting edge is often insufficient.

(2) the transverse edge is long, and the front Angle of the transverse edge is a large negative value, which is -5 4°~-6 0°, which will produce a large axial force.

(3) compared with other types of cutting tools, the main cutting edge of standard twist drill is very long, which is not good for cutting and cutting.

(4) take place after the deputy vice cutting edge of blade Angle is zero value, cause vice knife after the friction between the surface and hole wall, cutting temperature rise, the outer edge of the corner of bit wear is bigger, has processing surface roughness.Continue reading

Maintaining Long Life of Your Drill’s Grinding Wheel

If you are into wood, metal or masonry work then you must use hand drills for grinding holes in material. The Drill Bits of your hand drill need to be sharpened from time to time. For which you need to use a grinding machine. Also drill bits can be expensive so sharpening them rather than replacing them is a more rational thing to do. You can get your drill bits sharpened from a hardware store which may take a while. This could lead to prolonged machine downtime and you being unable to get your work done on time. But if you own it then you need to maintain it to ensure it lasts for a long time.   Maintaining the hand drill itself does not take much. Taking regular care and carrying out some simple general maintenance work can do the job. Like making sure you clean it before putting it away and after you are done using it. You must keep it clean by using a soft brush to brush off wooden or metal scrapes off it and cleaning it with a soft cloth afterwards. You should oil it with a multi-purpose oil that lubricates it and protects it from rusting.

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PURROS drill bit grinder with best grinding wheel.
Drill’s Grinding Wheel, 4.5 grinding wheel, 3 grinding wheel, 4 grinding wheel, 6 grinding wheel, 7 grinding wheel, 8 grinding wheel

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What are the basic steps of using the drill bit grinding machine?

Follow these steps to use the drill bit grinder:

 

  1. Select the correct and reasonable grinding wheel (type and model).
  2. For the new tool, first check the main geometric parameters and record, especially to record the cutting edge, chamfering and horizontal blade of the drill bit or tool.
  3. First enter the data of the grinding wheel, and then enter the data of the drill bit sharpening machine.
  4. After the grinding, the main parameters of the cutter are tested and compared with the standard data of the tool grinding, and it is modified after comparison with the tool grinding standard until the whole grinding is finished.

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If you do not know how to choose the model of the drill bit grinding machine for your tool, you can contact us. We have professional customer service staff to help you find the most suitable product.

Top 4 Drill Attachments That Everyone Should Have in 2018

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Are you looking for drill attachments that you must have? A drill is one of the best tools invented to make boring holes easy. This is a handy and versatile tool that can be great for various tasks. There are numerous attachments that you will need. In this article, we have listed few of the most common attachments.

Here are some of the attachments that every driller needs.

Self-Centering Hinge Bits

One of the must-have attachments is the self-centering hinge bits. This is a great drilling bit for centered holes. With the help of self-centering hinge bits, you can bore a hole quickly and easily. This drill bit will help you place holes accurately and correctly. These bits are available in various sizes as one size doesn’t fit all requirements. It is better to have to 2 medium sized bits, which are capable of handling a wide range of doors and cabinets.

All you have to is the place the nose of the bit in the countersunk rim of the hinge. This will enable you to have a precise hole for the screw.

Rotary Rasp

Another essential attachment is the Rotary Rasp. This attachment is great for grinding off the wood. It is also perfect for expanding existing holes or shaping them. The Rotary Rasp is good for use on various materials including wood and plastic.

It is recommended to clean the rasp if you want to extend the lifespan of the drill. In case, you are depended on the drill, there might be a possibility that the motor or bearings might get damaged. Of course, the drill bit grinder can be repaired with a bit to repair it’s worn corners. You can either get a heavy duty drill or take a break from drilling.

Furthermore, the Rotary Rasp is not a finishing tool. You must get a filer or sandpaper in order to have a smooth surface that is free from marks.

Magnetic Bit Holder and Bits

The magnetic bit is a great way to drive screw in the fastest manner. This is useful in screw driving as it is capable of working with broad range of screws. There are different lengths and sizes of bits that can work with magnetic bit holder. This bit is very helpful as it enables you to strip a screw head without keeping the screw properly engaged. There are some things that you need to keep in mind, they are:

  • You must apply slight pressure on the screw in the beginning and press harder later on.
  • If you put pressure in the starting, it will lead to screw slipping away and causing damage to the surface.
  • The heads of the screws are delicate, if you overdrive it, they will snap off.

Nut Drivers

The Nut drivers are essential for both beginners and professionals. If you don’t have nut drivers, you will have to turn the driver using a wrench. A nut driver will make it easy to loosen up and tighten a nut without applying much force.

All in all, with so many choices to choose from, it gets challenging to get the best. This is why you need an expert help. The PURROS Machinery is here to help you. In case, you need more information, feel free to contact our friendly customer support service.

How to Drill a Hole in metal?

In essence, drilling metal is no different than drilling wood. You set the drill bit in place, push the button and press the bit into the material you’re drilling. But there are two main differences. Your drill material must be a stronger structure, and you need to take additional precautions to prevent sparks and splashes. Metal flakes are sharper and cause more serious damage than sawdust and wood chips.

Most of the bits used in wood are also drilled into metal. But a spinning glass drill bit tends to wander across metal’s hard, smooth surface before it begins to dig in. You can give the bit an exact starting point using a center punch and a hammer. The punch creates a tiny dimple that keeps the bit in place. With a soft metal like aluminum, you can use a nail instead of a punch.

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Most Common Types of Drill Bits

Are you looking for drill and drill bits? Drill and drill bits have a key role to play in the toolkit of every handyman. These metal spiral shafts are essential as far as boring a hole. There are various types of drill bits that enable you to place in a hole in numerous materials. In order to bore an accurate hole in the surface, you will need the correct drill bit. With so many choices, it gets difficult to choose the right one. This article highlights the several types of drill bits available on the market.

Read on to know which drill bit can be used for various materials.

Brad Point Bits

One of the most common types of the drill bit is Brad Point. The Brad point bits are available in various sizes and lengths. You can select the drill bit keeping in mind your requirements.

One of the most common types of the drill bit is Brad Point. It is a great bit for placing a hole in wood as it has a small point at the tip. There are spurs on both the sides that helps in cleanly cutting precise holes. This bit is perfect for boring holes in all kinds of woods. The Brad point bits are available in various sizes and lengths. You can select the drill bit keeping in mind your requirements.Continue reading

How to drill small holes in wood?

To drill small holes in wood you need brad point drill bits that are specifically designed for use in timber. These bits are perfect for drilling pilot holes for screws and other small holes without splintering the timber.

How to drill wood?

The brad-point bit combined with a doweling jig is the most common method and most accurate bit for drilling dowel holes. It has spirals just like an ordinary twist bit but instead of the blunt tip like a spiral bit, it has cutters with a sharp pilot bit at the end to keep it steady and correctly positioned.

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Top Safety Tips When Using a Drill Bit Grinder

Are you thinking of grinding drill bit? Drill Bit Grinding Machines can prove to be dangerous and can lead to accidents. When you are working with Drill Bit Grinding Machines, you have to be extra careful. There are plenty of risks involved that can lead to lethal injury. This is why it is crucial for you to follow safe working procedures and tips. In this write-up, we have talked about the safety tips you must keep in your mind when using a drill bit grinder.

Let’s have a look at some of the safety precautionary tips.

safety precautionary tips, safety tips when using a drill bit grinder, safety precautionary tips, drill bit grinding machineContinue reading