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1. Three types of drill bits are recommended, one is cobalt-containing high-speed steel drill bits, and the other is high-performance cemented carbide drill bits. Cobalt-containing high-speed steel drill bits are cheap, but have short life span, low efficiency, and poor precision. The centering drill has better effect; the special drill bit for hard alloy stainless steel is expensive, but the service life is good, the efficiency is much higher, the dimensional accuracy of the hole is also high, and the smoothness is also much higher. It does not need a centering drill to process, and can be drilled directly ; The alloy cobalt drill bit is better for comparison between the two. The stainless steel is characterized by high toughness and easy sticking to the knife.Therefore, the hardness of the drill bit is required to be high. The main components of the cemented carbide are tungsten carbide, cobalt, etc. The hardness is generally higher than HRC 90 degrees, and the cutting fluid adopts a thick emulsion. The cutting speed is as low as possible, because 304 stainless steel is easy to drill and heat, which can reduce the temperature and facilitate chip removal.

rock drill bits

2.The drill bits for high-cobalt high-speed steel processing stainless steel are: high-cobalt drill bits (m35 drill bits, m42 drill bits). Among them, the m42 bit has the best cost performance.

Violent drill fast drill

3. Alloy drill bit generally refers to hard alloy drill bit, divided into integral type, welding type, indexable blade type and replaceable head type.Alloy drill bits are generally made of tungsten steel, and there is a big difference between imported and domestic alloy drill bits..Imported alloy drill bits generally use VHM micro-grain cemented carbide (ISO K40), ultra-fine particle type (0.6¦Ìm), the surface of high-quality alloy drill bits will be treated with coatings, such as aluminum chromium nitride (AlCrN) coating, which is a single-layer coating with a thickness of 4¦Ìm and a microhardness of 3200HV, 0.35 friction coefficient, thermal stability up to 1100 degrees Celsius.The color of the drill bit after coating is blue-gray.The coated alloy drill bit can process low alloy steel and high strength steel.High-hard steel can reach 54HRC.

Quick drill

4.Compared with the integral drill, the U drill is a tool that uses a combination of a center blade (inner blade) and a peripheral blade (outer blade) for hole processing..This structure determines that the U drill has an irreplaceable advantage over other drilling tools.

1Multi-specification versatility

U drill blades are suitable for various materialswholesale drill bits4 types of chip breakers for chips, 4 types of materials suitable for processing of different materials, plus 2D-5D serialized diameter specifications, can be combined with hundreds of tool forms, which can meet more than 80% of the drilling processing requirements.

In addition, U drills are usually processed from the outside. Compared with the shape of the center, U drills are more suitable for processing conditions..(The following are common U drill applications)

2 High efficiency and low cost

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The utility model is an automatically replaceable drill bit, belonging to the field of drill bits.

Background technique:

When digging, the drill bit rotates around the vertical axis and moves axially at the same time.The soil is cut under the action of the torque and axial force of the drill bit, and is destroyed and smashed under the action of the squeezing and centrifugal force of the working blades, forming a soil flow that presses against the wall of the pit, and at the same time is lifted along the page to the surface.When the earth flow moves to the place where there is no pit wall, the broken soil is thrown around the pit due to the centrifugal force, completing the entire digging process.This kind of drill has not only high hardness but also improved compressive and bending strength.In order to save costs, many drill bits use welded shank structure. The original drill bit is made of cemented carbide as a whole, and the rear shank is made of stainless steel. The cost is greatly reduced. However, due to the use of different materials, its dynamic concentricity is not as good as solid carbide drills. , Especially in small diameter.

The prior art publication application number is CN201210566354.A triangular drill bit of 3, including a cutting edge, and a chip dividing groove is opened on the cutting edge.When the triangular drill provided by the present invention is used for processing aluminum alloy materials, because the aluminum alloy material is relatively soft, especially when the hole diameter is large and deep, the chip splitter can divide the wide aluminum chip into narrow aluminum chip, which makes chip removal convenient. The chip pockets are not easy to block the chips, and there is no phenomenon that the shank or the drill bit is broken due to the stuck drill bit, which reduces the scrap rate of the drill bit.At the same time, the triangular drill provided by the present invention has a simple manufacturing process, low processing cost, and is light in weight due to the opening of a chip splitter, and is convenient for manual sharpening. It can be changed to other drilling diameters as required..But the drill bit cannot be replaced quickly when it needs to be replaced.

Technical realization elements:

In view of the shortcomings of the prior art, the purpose of the present utility model is to provide an automatically replaceable drill bit, the structure of which includes a chuck handle, a connector, a holder sleeve, a holder, and a drill bit. The chuck handle is similar to the connector. Connected, the holder sleeve and the connector are connected by threads, the holder is arranged inside the holder sleeve, the drill bit is arranged inside the holder, and the clamping handle is provided with a clamping handle to prevent rotation Groove, the chuck handle anti-rotation groove is provided on the chuck handle surface, the connector is provided with a connector locking surface and a connector thread, the connector locking surface is provided on the surface of the connector, and the connector thread is provided On the surface of the connecting head, the drill bit is provided with a drill shank, a secondary cutting edge, a flank surface, a main cutting edge, a chisel edge, a rake surface, and a thread groove, the drill shank is arranged behind the drill bit, and the secondary cutting edge is provided On the side of the drill, the flank surface is provided between the main cutting edge and the secondary cutting edge, the chisel edge is provided in front of the flank, the rake surface is provided behind the main cutting edge, and the thread groove is provided in the front Behind the blade.

Further, the holder sleeve is provided with a sleeve loosening surface.

Further, the sleeve elastic plate surface is provided on the surface of the holder sleeve, and the sleeve elastic plate surface is provided with

Posted by: philipjere at 02:07 AM | No Comments | Add Comment
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The hour, minute, and second hands are turning. 2016 is about to go, and 2017 is coming soon. Suddenly, there are only the last few days left in 2016. Looking back on 2016, how did you spend the 356 days and nights before? Have you achieved the "small goals" set at the beginning of 2016?

The world is so big, but happiness can be small. When "completing a small goal" became a rhetoric, Mizado achieved the goal step by step through continuous dedication and hard work.

In the eyes of Wang Zhihao, chairman of Mishuduo, 100 million yuan is not the goal of termination, it is just the carbide rods beginning. There are many meters with an output value of more than 100 million yuan. After completing this "small goal", will it stop there? No, Mr. Wang's goal is to have a broader future global drilling tools market and to find a precise positioning from an industry perspective.

Twenty-one years of development and persistence

Entrepreneurs who look forward to working in a broad market are often full of passion And chic. When talking about the layout of the meter in the current market, Mr. Wang said gently. ¡°The country¡¯s economic situation is undergoing drastic changes, and the operations of traditional manufacturing companies must also change accordingly. Through continuous learning and continuous exploration, we must find a marketing method that suits them.¡± When most people are still using traditional methods When marketing cemented carbide, Mishao took the lead in opening the Internet marketing model. After the Internet marketing model achieved certain results, the meter started to use the traditional marketing model. "From the user's point of view, it is the foundation of enterprise development." Mr. Wang pointed out the core elements of the development of the cemented carbide industry, which is also the foundation that Mi Duo has been sticking to during more than 20 years of business history heart.

Building a Jagged Marketing Team

2016 is a busy year for Mr. Wang, the chairman of Midduo, and a year of running around. This year he traveled all over the country on business, and sometimes went on business trips even with a cold. He said: "The biggest challenge in life is that you never know where your opponents are or how hard they are." Having such a leader in control of the direction is a kind of happiness and a challenge.

No matter what business model or profit model it adopts, a professional and brave marketing team is essential. In 2016, Mi Shi Duo created two marketing teams like wolfs. They have conquered many new and old customers with their wolfishness, and also used their professionalism and dedication to help new and old customers approach various difficult diseases. Let them buy drill products with a large number of meters, buy them with confidence, and use them with peace of mind!

Achieving a win-win market

Operating a cemented carbide "old" company that has been developing for more than 20 years , Wang Zhihao, who has been working hard for 20 years in Zhuzhou City, has witnessed the groundbreaking and prosperity of countless cemented carbide companies, especially in recent years, the emergence of various emerging companies relying on the Internet. In the face of such a new generation of "jianghu", Wang Zhihao remained calm, without any pressure in his words, "This is a kind of help for the industry." Behind the calm is Wang Zhihao's incomparably clear understanding of the cemented carbide market.

Seeing hope in development and finding partners in competition is Wang Zhihao¡¯s unique insight. Zhuzhou is the hometown of cemented carbide, where various cemented carbide companies and factories gather. However, Wang Zhihao is even more looking forward to the vigorous development of more companies, so that more new ideas and concepts can be integrated into the industry, thereby driving

Posted by: philipjere at 02:06 AM | No Comments | Add Comment
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The lathe needs [lathe tool] (a part) to use, and the synthesis formula = [refined iron plate] (only metal forming machine can be used) + [iron shell] x2

Open the lathe interface, put [Lathe Tools] in the second grid in the left column, and put [Iron-to-air conversion template] in the first grid.

Put [Iron-to-air conversion template] (square) in the first grid, and [5/5 5/5 5/5 5/5 5/5] (large square image) will be displayed on the right.Pay attention to the 5 buttons marked by the yellow numbers in the picture (if there is kinetic energy, you can press it), each time you press it, 1 will be cut off, in order to be processed into the picture above.We need to click the [2] button once, [3] button 2 times, [4] button 3 times, and [5] button 4 times to get [5/5 4/5 3/5 2/5 1 /5], which is the cone we need for synthetic drills.

ps: Take out the processed [iron-to-air conversion template] (cone), you can close the drill bit, pay attention to take out the [electric motor], do not let the [electric kinetic energy generator] waste electricity.

Posted by: philipjere at 01:14 AM | No Comments | Add Comment
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In fact, there are many types of drill bits, which are mainly distinguished according to their different uses, that is, what kind of drill bit is used for drilling.In order to let everyone better understand the relevant knowledge of drill bits, the following editor will give you a brief introduction to the uses of various commonly used drill bits..

Types of drill iron

The material of the drill bit is generally high-speed tool steel or cemented carbide, while high-speed steel is often used in the factory. rock drill bits Depending on the material, it will use different speeds and add coolant.

Black drill bits are generally used for metal drilling, and the material of the drill bit is generally high-speed steel. Drill holes in general metal materials (alloy steel, non-alloy steel, cast iron, cast steel, non-ferrous metals), and use metalworking drill bits together.But pay attention to drilling holes in metal materials, the speed should not be too high, it is easy to burn the edge of the drill.

Now there are some gold that is coated with rare hard metal film. It is made of tool steel and other materials, which is hardened by heat treatment..The tip is ground at equal angles on both sides and tilted back a bit to form an acute cutting edge.Drill steel, iron, and aluminum that are not hardened by heat treatment. Aluminum is easy to stick to the drill bit, so it needs to be lubricated with soapy water when drilling..

Drill holes in concrete materials and stone materials, use percussion drills, and match masonry bits. The material of the cutter head is generally cemented carbide.Ordinary household, instead of drilling holes on the cement wall, use an ordinary 10mm hand drill.

Drilling wood.Drill holes in wooden materials and use woodworking drills together. Woodworking drills have a large sales volume and do not require high tool hardness. The tool materials are generally high-speed steel.There is a small point in the center of the tip of the drill bit, and the angles on both sides are relatively large, even without angle.Used in a good fixed position.Its practical drill bit for metal drilling can also drill wood.Because wood is easy to heat up and crumbs are not easy to come out, so you must slow down the speed, and often exit to remove crumbs.

Use tile drills to drill holes on ceramic tiles and glass with higher hardness. The tool material is tungsten carbon alloy. Because the tool has higher hardness and poor toughness, you need to pay attention to low speed and no impact..

How to choose a drill

rilling operation is essentially a kind of cutting process. The prerequisite to complete the cutting process is that the hardness of the tool material must be higher than the hardness of the material being processed.

Precautions for using drills

The material of the drill bit is related to the hardness and rigidity of the heat treatment, and is also related to the angle of its grinding. Different sizes and different materials to be drilled must be ground into different angles and inclination angles..The harder the tool, the worse the toughness, the thinner the bit, the worse the rigidity.The drilling speed should not be too fast, especially the bigger the hole, the slower.It is best to add proper cooling oil or water.

Generally, when drilling a hole, it is necessary to make a sample and punch the hole .

Posted by: philipjere at 07:35 AM | No Comments | Add Comment
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