Tag Archives: drill bit grinding machines

Some tips of quick sharpening drill bit

Here’s some quick sharpening tips.

Keep the glasses on use the guard practice with your crappiest tools first. So when you get the hang of this when you nicer your better drill bits you got some skills. We’ll make this better as far as we can.

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to repair and grind the Leading Edge of the drill bit

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to repair and grind the Leading Edge of the drill bit

Here we are at bench grinder. What we’re going to do?  We’ve got a bad drill bit and you’ll notice the leading edge the top. Leading edge is what does all the work of a drill bit. When we hit bad material, it doesn’t remove material anymore. Eventually it’ll blew and ruin the drill bit if we want to take off some of the material on the back side.

 

Next we will going to show that I do to polish the front.

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to grind front of the drill bit, how to repair and grind the Leading Edge of the drill bit

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to grind front of the drill bit, how to repair and grind the Leading Edge of the drill bit

We’re gonna hold it just for a second or two like that in the Leading Edge. To clean this leading edge up the face and then we’re gonna grind on the backside of the bit slowly. Bringing the bit down until we see sparks hit the front. We’re gonna use all the side of the wheel.

When you’re doing this you look down and see where the center is and when you do one side. And you got your hands in position. You don’t look at it.

 

Then go back down and do it again. What happens as you lose your hand positioning so to do you look down this leading edge. And you watch the sparks. And you just touch it and you flip it over you don’t move your hands. See what that did is it gave me a clean Edge we can see my surface.

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to grind front of the drill bit, how to repair and grind the Leading Edge of the drill bit

Sharpen the skills of the drill bit, how to repair and grind the drill bit, how to repair and grind the drill bit, how to repair and grind the top Angle of the drill bit, how to grind front of the drill bit, how to repair and grind the Leading Edge of the drill bit

When we are going to sharpen now. We can see how grounded. We swallow they bring it down until we see some sparks coming off the front. The material going down now we don’t get to look at it. We go back off the back. We rotate it to do the other half. Then we start at the back. We go down they see well when we get near the tip. We push less and less hard.  So there is their cut. It’s going downhill. So the leading edge is the highest point.

 

It’s sharp as a razor right now. And both side look about the same decides. A little worse than the other. And we checked for center the other trick with. When we do the face of the grinding so wide. This is here we’re going to narrow that up a little bit. So when this goes on a piece of metal and it’s spinning. It’s not wandering all over the narrower that is better it stays on your mark. It doesn’t wonder as you’re trying to drill. So that just got narrower if you know what we are looking at you see. Its narrower now in the center as we get sharper. We’ve pushed less higher. So we actually have little too steep of a relief angle on this side.

These are some tips of quick sharpening drill bit. This method of grinding drill bits depends entirely on experience and feeling. We recommend our drill bit grinder products to you. It can finish drill grinding easily and correctly. Welcome to consult our products.

The purpose of grinding the major cutting edge of drill bit

The purpose of grinding is to change the edge shape or point angle to increase the front angle and control chip breaking. Or change the distribution of cutting load, increase the heat dissipation condition and improve the life of drill bit.

Three ways to sharpen the major cutting edge:

Three ways to sharpen the major cutting edge

Three ways to sharpen the major cutting edge

  1. Grinding the concave arc edge and strengthening the centering function of the drill are helpful for chip separation and chip breaking.
  2. Grinding out double or multiple point angles, or grinding out convex arc edges, can improve the heat sink at the edge of the drill edge and increase the life of the drill bit, which is suitable for brittle materials.
  3.  Grinding out the chip dividing groove to facilitate chip removal.

There are many points of attention and its use in grinding drill bits. If customers have difficulties in drill grinding, please consult us. We are a manufacturer of drill bit grinding machines. We are familiar with drill bit grinder product structure and function.

Inspection method after bit grinding

The worn bit can be tested by template test after grinding, but visual inspection is often used in many factories for convenience.

So how do you test it visually?

Inspection Anglewith Tool

Inspection Anglewith Tool

First of all, the cutting part of the bit is erected upward with two eyes at eye level. Since the two main cutting edges of the bit will produce parallax in front of each other, it is often felt that the two cutting edges will look higher and lower. Rotate the drill 180 degrees more times when looking at the head, if the results are the same, the symmetry will be shown. Same thing for the lip relief angle, same angle of inclination. Since the bit is grinded by hand, it needs to be inspected after it is polished.

If the drill bit grinding machine is used, the grinding bit will be more accurate and the grinding bit will be more standard. The grinded bit shall be tested and used after qualified.

The selection of main geometric parameters for the grinding of twist drill bit

The main geometric parameters of twist drill include the choice of cutting lip angle, the choice of land angle of cutting edge and lip clearance angle of cutting edge, the analysis of the influence of helix angle on the life of drill bit and the treatment of cutting edge.

 

Cutting lip angle determines chip width and bit front angle. When the diameter and feed of the bit remain unchanged, increasing the top angle will narrow the iron filings and reduce the load per unit cutting lip. Cutting lip angle has a great influence on the land angle. Increasing cutting lip angle correspondingly can improve the cutting conditions at the core. Cutting lip angle affects the direction of chip outflow. According to the relevant tool design data and the characteristics of low hardness but high viscidity of the processed product, the cutting lip angle of the bit is selected to be 140°.

 

The land angle of a twist drill is determined by other geometric parameters of the drill. In high-speed cutting, the rake angle has little influence on cutting deformation and cutting force, and the strength of tool tip can be enhanced with a smaller land angle. When the land angle is determined, the bigger the lip clearance angle is, the sharper the edge is, but the wedge angle will decrease correspondingly, which will affect the strength and heat dissipation area of the tool. For this purpose, the lip clearance angle of the drill bit is selected as a smaller one, which is 8°.

If you choose our drill grinding machine, you can easily finish the drill grinding work. You can achieve the desired results by choosing the right chuck according to your drill bit. Our drill bit grinding machine makes complex drill grinding easy. If you are interested in our products, please contact us. We are a manufacturer of drill bit grinding machines. The price is relatively favorable. We welcome agents to negotiate business.

What are the advantages of CVD diamond coated tool?

Chemical Vapor Deposition is called CVD. Diamond coating has many excellent properties such as high hardness, high thermal conductivity, low friction and low expansion coefficient.

In the processing of brittle materials such as graphite and carbon fiber composite materials, it has become the surface coating of cutting tools and has shown excellent performance in improving tool life and processing quality.

The selection of diamond coating thickness is not “the thicker the better”.

How many types of milling cutter according to purpose?

With the improvement in wear resistance, the quality of diamond coating is more important than that of thickness.

After continuous testing and verification of various tool materials, the service life of CVD diamond coated tool is 8 ~ 10 times of that of cemented carbide tool. The allowable cutting speed of CVD diamond coated tool is 2 ~ 3 times higher than that of hard alloy tool.

CVD diamond coated tool has sharp cutting edge and good consistency, low friction factor, and can realize high speed and precision machining of thin-walled graphite mould under high speed and low feed. Meanwhile, the service life of CVD diamond coated tool is longer among many tool materials.

The selection and application of diamond coated tools are mainly based on the properties of workpiece materials and the requirements of machining quality.

Note: When the coated bit is repaired by drill bit grinding machines, the worn coating is irreparable.

What kind of material is suitable for what kind of tool?

Determine the material of the tool according to the machining type and workpiece material. It is a common knowledge in the whole machining industry to match tool materials with workpiece materials. But not everyone knows how many conditions this so-called match will satisfy. Next, we will introduce ‘how tool materials and workpiece materials can match mechanical, physical and chemical properties’.

How do the mechanical properties of tool materials and workpieces match?

The mechanical properties are mainly designed for the strength, toughness and hardness of the tool and workpiece. All kinds of tool materials are arranged in order of bending strength from strong to weak: high-speed steel, hard alloy, ceramic tool, diamond and cubic boron nitride tool. In order of toughness from high to low: high speed steel, hard alloy, cubic boron nitride, diamond and ceramic tool; In order of hardness from high to low: diamond tool, cubic boron nitride tool, ceramic tool, hard alloy and high speed steel.

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The drill bit grinding machines produced by PURROS are sold all over the world.

With many years of experience in the industry, PURROS has successfully surpassed the industry and reached the heights of success. Our company ensures that the selection of suppliers is based on various parameters, such as batch order, customization, latest technology and high quality raw materials.
We ensure that the drill bit grinders are strictly tested on various parameters to ensure the products reach the perfect range of customers.
Our highly effective professional team has conducted intense market analysis to ensure the quality of products has been strictly inspected. Moreover, we have successfully provided the perfect product line for customers all over the world.

The drill bit grinding machines produced by PURROS are sold all over the world.

We have professional sales staff to communicate with you to confirm the products. Welcome to contact us to learn more about the products.

Why to buy sharpening machines for drill bit?

Bench grinders are so incredibly cheap that every home workshop should have one. As we covered in using bench grinders, there’s a host of uses for a bench grinder, including grinding welds and shaping metal. But perhaps the greatest real-world use is sharpening drill bits.

 

Our re-sharpening tool machines not only provide drill bit repair, drill bit sharpening, drill bit tipping, and chisel sharpening of our own carbide tipped drill bits, but those made by other manufacturers as well at a fraction of the cost of new ones!  So don’t throw away those expensive carbide tipped drill bits,  use PURROS drill bit sharpening machines to repair them.

 

Good quality drill bits are expensive – very expensive in large sizes. But once you can competently sharpen drill bits with a bench grinder, you can buy lots of your drills secondhand, massively dropping the purchase prices.

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Buy sharpening machines for drill bits, please click here.

PURROS provides the drill bit grinding machines that can repair various materials and types of drills. Reconditioning maintains the exact geometry and coating of the original tool. Tool reconditioning is a reasonably priced alternative to buying new tools while still maintaining the same performance. To this end, by the time a tool is reconditioned for the third time, tools costs are reduced by 50 percent.

Tips to Sharpen Drill Bits

Drill bits can be sharpened in several ways, and it might be handy to learn if you personally do the installation of your home’s hardwired security system. Even if you don’t hit any nails while drilling holes for your home alarm and other security devices, your bits will still get dull.

Drill Bits are very expensive, especially the long ones used for the wiring of home security system. Rather than replacing them, you should sharpen the bits to save you money and also make drilling easier and faster, since you will have in your possession freshly sharpened bits.

A drill bit grinder is available for purchase and it brings a dull bit back to its original form. It is advisable not to purchase a special tool that only has one function. Especially when an almost good drill bit grinding machines is already sitting on your workbench.

Using a drill bit grinder attachment on a bench, which can be found in various home workshops, you can easily sharpen your bits. They might not be as perfect as the original bit, but they will get you back in action as fast as possible and crazily drill holes

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