How to grind the alloy saw blade?

Question 1: How to grind the alloy saw blade? It is best to return to the factory for grinding. If it is inconvenient, you should also find a place with an automatic gear grinding machine to grind your teeth. Otherwise, manual grinding is inaccurate, such as sharpness, angle, accuracy and so on.

Question 2: How to grind the alloy saw blade with adjustable angle? When polishing, you must find a professional polishing place or return to the factory for polishing. Don't grind the teeth manually, or the saw blade will be damaged or unusable.

First, use a professional saw blade grinder to grind the sawtooth of alloy saw blade. Besides strict requirements for grinding wheel, motor and worktable, suitable grinding fluid (cutting fluid) is also needed. Its main function is to cool alloy bit, improve the smoothness of cutting surface and improve grinding effect.

In addition, according to the needs of use, many factors must be considered in the design of saw blade, the most important of which is the angle of alloy cutter head at the tooth end of saw blade.

No matter the front angle (inner angle), back angle (outer circle) and side surface, there are specified angles in the design. If the grinding angle is wrong, there will be serious consequences such as low efficiency and unusable in actual use. Whether it is production, renovation or grinding of saw blades, professional grinding of saw blades is needed.

Therefore, the choice of saw blade grinder is the key link in saw blade production or grinding. When choosing a machine, we should first look at the rigidity and accuracy of the machine, and the accuracy depends on the design principle of the machine and the performance of the machine parts.

Secondly, we should inspect the after-sales service of machine manufacturers. Machines are fixed assets. Besides routine maintenance, professional services from manufacturers are also necessary. Especially professional and special machine parts, only professional manufacturers can provide them.

Comparison between automatic machine and manual machine: the advantage of automatic machine is high precision, slightly lower technical requirements for workers, and the disadvantage is relatively low efficiency. The advantage of manual machine is high speed and efficiency, but the disadvantage is that the technical requirements for workers are slightly higher, and the accuracy is naturally related to the workers themselves.

Question 3: How to grind and repair the saw blade? Saw blade is a general name for thin circular tools used to cut solid materials. Saw blades can be divided into: diamond saw blades for stone cutting; High-speed steel saw blade for cutting metal materials (without cemented carbide blade); Carbide saw blade is used for cutting solid wood, furniture, man-made board, aluminum alloy, aluminum profile, radiator, plastic, plastic steel and so on.

According to the tooth profile, there are even teeth, dense teeth, staggered teeth and variable teeth.

At present, after the saw blade is worn, most people choose to discard it or find a company to help polish it. The grinding of saw blades requires technology. However, with good grinding equipment, the grinding efficiency of saw blades can be greatly improved.

Method 1: Grind the saw blade with a special saw blade grinder.

The latest American and Japanese machine tool dense tooth saw blade grinder.

The grinding of saw blades requires a certain understanding of the types, tooth profiles and parameters of saw blades. Grinding the saw blade, these are the basics, just like if you want to write an article, you must learn to write, so that you can "prescribe the right medicine." There is no most special and automatic method to grind the saw blade, because it is determined by the complexity of the saw blade.

There are also different grinding methods using different types of saw blade grinders, which can be learned according to the teaching video of saw blade grinders.

There are a few points to note. Install the grinding wheel perfectly between the teeth, with equal distance and relative angle.

Method 2: Grind with an angle grinder.

General saw blades can be divided into straight tooth grinding and oblique tooth grinding. Straight tooth grinding is characterized by the length, width and width of the sawtooth, and the sawtooth surface is horizontal and easy to grind. The oblique grinding teeth are separated left and right, and the serrated surface has a certain inclination. If it is mechanical automatic grinding, it is easy to operate as long as the machinery is adjusted. Manual grinding has certain technology, so it is necessary to pay attention to the consistency of grinding progress in the grinding process, otherwise the sawtooth length phenomenon will appear, which is not conducive to cutting. The angle of oblique grinding teeth should be the same as that of the original saw blade. When grinding, you need to jump and grind, and then turn over and grind the other side after grinding. However, the smaller the angle of sawtooth bevel, the sharper the cutting and the smaller the thrust, but the workpiece is prone to burr. The larger the oblique grinding angle, the greater the thrust, but the smoother the cutting surface of the workpiece. Of course, what matters is your own experience, which will naturally become simple after a long time.

Question 4: How to polish alloy saw blade with diamond file?

Question 5: How to Grind Alloy Steel Saw Blade Selection of Alloy Steel Saw Blade

1) resin bonded diamond grinding wheel has weak bonding strength, so it has good self-sharpening, high grinding efficiency, low grinding force and low grinding temperature. Its disadvantages are poor wear resistance and large abrasive loss, and it is not suitable for heavy load grinding.

2) Ceramic bonded diamond grinding wheel is superior to resin bonded diamond grinding wheel in wear resistance and bonding ability, and has the advantages of sharp cutting, high grinding efficiency, small thermal expansion, easy control of precision, rough grinding surface and high cost.

3) Metal bonded diamond grinding wheel has high bonding strength, good wear resistance, small wear, long service life and low grinding cost, and can bear a large load, but its sharpness is poor and it is easy to jam.

4) Abrasive particle size has certain influence on grinding wheel blockage and cutting ability. Compared with fine sand particles, the cutting edge wear of coarse sand particles increases with the increase of penetration depth, and the grinding wheel is easy to block.

5) The hardness of grinding wheel has a great influence on the blockage. High hardness grinding wheel has high thermal conductivity, which is not conducive to surface heat dissipation, but is beneficial to improve machining accuracy and durability.

6) The choice of grinding wheel concentration is an important characteristic, which has a great influence on grinding efficiency and machining cost. If the concentration is too low, the efficiency will be affected. On the contrary, abrasive particles will fall off easily, but the best concentration range of binder is also the best.

Question 6: How to grind teeth when the alloy saw blade is dull?

Question 7: How to polish the woodworking saw blade? Alloy saw blades have special grinding equipment, and carpenters generally use left and right teeth. The left-right deviation angle of teeth is 15 degrees, and the tip of teeth is 30 degrees.

Question 8: Some tips on how to sharpen saw blades and circular saw blades are for reference only:

1. Note that the front-rear ratio is 1: 3, and the minimum remaining length and width of the serrated part of the saw blade should not be less than1mm; Must strictly follow the relevant operation, non-professionals can not operate, maintain the correct grinding method, and can continue to use the saw blade within a reasonable life. If it cannot be ground correctly, it will only reduce the due efficacy and quality of the circular saw blade.

It is forbidden to grind only from the front angle or only from the back angle, which will greatly shorten the service life of circular saw blades and affect the next grinding state!

It is also important that the whole worn area should be fully polished. The circular saw blade is ground on an automatic grinder. If it is polished by hand on a general grinder, it will seriously affect the quality of use. (CNC grinding machine can ensure that the grinding of the front corner surface and the back corner surface is completely in the same direction. )

In order to prevent the grinding wheel from wearing too much, there should be enough lateral protruding parts from the sawtooth side to the sawing position. On the other hand, the maximum lateral protrusion should not exceed 1.0- 1.2 mm on each side to ensure the stability of the saw blade.

Chip removal groove

Try to ensure the chip removal space and avoid grinding the chip removal groove at the same time because of sawtooth grinding.

If the sawtooth collapses, you must go to the center of the grinding tooth to change the tooth. When welding, pay attention to the use of appropriate welding sound or other solder, preferably with a high-frequency welder.

Leveling and pressurization

If you want to use a circular saw blade to ensure its polished quality, please be sure to use the leveling afterburner program, and don't stop using it because of trouble. Check the flatness and stress value of the saw blade every time grinding? And correct it. Leveling can reduce the tolerance of saw blade jumping, and increase the stress to give the saw body strength and elastic characteristics, which is an essential process for thin saw blades; The relationship between the outer diameter of circular saw blade and the outer diameter of flange can be found in DIN8083 standard. The outside diameter of the flange shall not be less than 25-30% of the outside diameter of the circular saw blade.

Effect analysis of circular saw blade cemented carbide saw blade after grinding

Usually, most circular saw blades on the market can be ground after a period of use. The main purpose is to repair the sawtooth, make it sharper, and maintain the stability of sawing and the quality after cutting. For example, cemented carbide saw blades can be ground once or three times, depending on the actual use.

There are several grinding methods for cemented carbide saw blades, but they are usually grinded with alloy grinding wheels. We should pay attention to the quality after grinding, that is, the use after repair;

Effect analysis: According to the actual situation, we can judge the ground that users are most concerned about:

1, service life

Effect analysis: Will the service life of cemented carbide saw blade be reduced after grinding? This will be directly linked to the cost and benefit of users' subsequent use, and the answer is yes. However, if the grinding process is very good, it can reach 70% or even higher than before, which requires users to find a regular and experienced manufacturer for grinding operation when choosing a grinder.

2, cut off the quality

Effect analysis: the quality of workpiece cutting is the responsibility of the market and customers. If the cutting quality of cemented carbide saw blade decreases after grinding, it is a very pessimistic thing, which will affect the development of enterprise business. If the customer is not satisfied with the quality, there is no need for subsequent grinding. In view of this situation, in fact, users do not have to worry too much. In general, the grinding of cemented carbide saw blade will not affect the quality of the cut workpiece. The original intention of grinding itself is to maintain the sharpness and cutting quality of sawtooth. As long as users do not choose small workshops or informal enterprises when polishing, they can generally guarantee the core of quality.

3. Stability during sawing

Effect analysis: Regarding the stability, unless it is a very poor grinding process, it will not affect the sawing stability of cemented carbide saw blades after grinding.

Question 9: How to easily polish the alloy saw blade? You don't know what else to grind.

The usability of the saw blade depends on the angle and width of the saw blade. The angle and width of the saw blade are different for different purposes. The thickness, hardness and material of your saw blade should be taken into account.

Question 10: How to sharpen the saw blade? Description of grinding of high-grade imported saw blades

At present, there are many small saw blade grinding plants and manual workshops on the market; Grinding the saw blade is only a simple and rough treatment of the front angle of the sawtooth, and the original angle of the saw blade is changed after the treatment. The back angle, side angle and tooth cavity of the saw blade have no treatment conditions at all, and the processed products have no inspection and correction after grinding.

According to customers, our grinding fee is high; Long grinding time, etc. , make a description, introduce our grinding process testing technology and related technical standards.

A. After receiving the saw blades that customers need to polish, our company first establishes the customer's product files, soaks all the saw blades in warm water at 50 degrees Celsius for 30 minutes, and then carries out cleaning, derusting, degumming and preliminary appearance inspection. Products with obvious defects that can no longer be ground after cleaning shall be marked with customer number, directly returned to the area, and sent to customers together after the products to be ground are completed.

B, then use a dial indicator to detect the angle, including the tooth rake angle; Hind foot; Check the side corners (check for cracks, missing corners, etc.). ), and then put it on the projector to enlarge it by 50- 100 times, and determine the wear condition of the saw blade with the original angle of sawtooth; If the tooth missing angle is small, the grinding amount can be increased appropriately to reduce the production cost of customers.

C. If alloy teeth need to be replaced, please use Germany KAHNY automatic tooth welding machine to change teeth.

D, carrying out stress correction of the saw blade, wherein the grinding of the saw blade is the key process; It needs to be done by very experienced technicians. During the high-speed operation of the saw blade, under the action of external force, the stress of the saw blade has changed, so the sawing path will become larger. Surface roughness and other phenomena; We all have to ask for pressure adjustment more than twice; If it can be revised within the standard range (refer to the technical standard of dual-purpose saw blade production in Japan), we will proceed to the next process. Otherwise, we will contact our customers and ask their opinions. If customers require grinding, we will carry out precision grinding. However, after completion, we will attach the specific data of saw blade deviation to the saw blade package. We first use a 200-grit diamond grinding wheel imported from Japan for rough grinding, and then use a 600-grit diamond grinding wheel for fine grinding.

E. check the vibration rate in the next step, and then make the final inspection according to step b after it is qualified. After completely passing the test, put it in the delivery area, hand over the work order to the business, and complete the whole polishing process.