question 2: how to grind the alloy saw blade with adjustable angle? When grinding, you must find a professional grinding place or return to the factory for grinding. Do not grind the teeth manually, otherwise the saw blade will be damaged or unusable.
professional saw blade grinding machine should be used for gear grinding of alloy saw blade. Besides strict requirements on grinding wheel, motor and workbench, appropriate grinding fluid (cutting fluid) is also needed. Its main function is to cool the alloy bit, improve the flatness of cutting surface and improve the 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 of the machine, there is a specified angle in the design. If the grinding angle is wrong, it will lead to serious consequences such as inefficiency and unavailability in actual use. Whether producing, renovating or grinding saw blades, it is necessary to grind the saw blades professionally.
therefore, the selection of saw blade grinding machine is the key link in the production or grinding of saw blades. 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, it is necessary to inspect the after-sales service of the machine manufacturer. The machine is a fixed asset, and besides the regular maintenance on weekdays, the professional service of the manufacturer is 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 lies in its high precision and slightly lower technical requirements for workers, but its 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 to some extent.
question 3: how to grind the saw blade and how to repair the saw blade. the saw blade is a general term 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 blades for cutting metal materials (without cemented carbide tips); Carbide saw blade for cutting solid wood, furniture, man-made board, aluminum alloy, aluminum profile, radiator, plastic, plastic steel, etc.
according to the tooth profile, there are even teeth, dense teeth, crossed teeth and variable teeth.
At present, after the saw blade is worn, most people choose to discard it or find a company to help with grinding. Grinding of the saw blade requires technology. However, with a good grinding equipment, the grinding efficiency of the saw blade can be greatly improved.
Method 1: Use a special saw blade grinding machine to grind the saw blade
The grinding of the latest saw blade grinding machine saw blade for dense teeth of the US and Japan machine tools requires a certain understanding of the types, tooth types and parameters of the saw blade. To grind the saw blade, these are the foundations, just like if you want to write an article, you have to learn to write, so that you can "prescribe the right medicine" specifically. There is no most special and automatic method to grind the saw blade, because it is determined by the complexity of the saw blade.
Different types of saw blade grinding machine have different grinding methods, which can be learned according to saw blade grinding machine's teaching videos.
There are several points to be noted, namely, the grinding wheel piece should be perfectly attached to the teeth, the distance should be equal, and the angle should be relative.
Method 2: Use an angle grinder to grind
Generally, saw blades can be divided into straight grinding and oblique grinding. The straight 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 gear is separated from the left and the right, and the sawtooth 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 a certain technology, so it is necessary to pay attention to the consistent grinding progress in the grinding process, otherwise the sawtooth length phenomenon will occur, which is not conducive to cutting. The angle of oblique grinding teeth should be the same as that of the original saw blade. During grinding, it is necessary to skip grinding, and then turn over and grind the other side after one side is finished. However, the smaller the angle of the serrated bevel, the sharper the cutting, and the smaller the propulsive force, but the workpiece is prone to burr, and the larger the angle of oblique grinding, the harder the propulsive force, but the smoother the cutting surface of the workpiece. Of course, the important thing is your own experience, which will naturally become simple after a long time.
question 4: how to grind the alloy saw blade with a diamond file.
Question 5: How to grind alloy steel saw blades
1) Resin bonded diamond grinding wheel has weak bonding strength, so it has good self-sharpening, high grinding efficiency, less grinding force and low grinding temperature, and its disadvantages are poor wear resistance and large grinding tool loss, so it is not suitable for heavy load grinding.
2) The wear resistance and bonding ability of ceramic bonded diamond grinding wheel are better than that of resin bonded diamond grinding wheel, which has the advantages of sharp cutting, high grinding efficiency, less thermal expansion, easy control of precision, coarse grinding surface and high cost.
3) Metal bonded diamond grinding wheel has high bonding strength, good wear resistance, low wear, long service life, low grinding cost, and can bear a large load, but it is poor in sharpness and easy to block.
4) Abrasive particle size has a certain influence on grinding wheel blockage and cutting capacity. Compared with fine sand particles, the cutting edge wear of coarse sand particles increases with the depth of penetration, whereas the grinding wheel is prone to blockage.
5) The hardness of the grinding wheel has a great influence on the blockage. The high hardness of the grinding wheel has a high thermal conductivity, which is not conducive to the surface heat dissipation, but is beneficial to improving the machining accuracy and durability.
6) the choice of grinding wheel concentration is an important characteristic, which has a great influence on grinding efficiency and processing cost. If the concentration is too low, the efficiency will be affected. On the other hand, abrasive particles will fall off easily, but the optimal binder concentration range is also the best.
question 6: how to grind the teeth when the alloy saw blade is dull
question 7: how is the woodworking saw blade ground? The alloy saw blade has special grinding equipment, and the woodworking usually uses left and right teeth. The left-right deviation angle of the teeth is 15 degrees, and the tip of the teeth is 3 degrees.
Question 8: Teach you some little knowledge about how to grind the saw blade and circular saw blade for reference only:
1. Note that the ratio before and after is 1: 3, and the minimum remaining length and width of the sawtooth part of the saw blade should not be less than 1 mm from the tooth seat; Must be strictly in accordance with the relevant operations, non-professionals can not operate, maintain the correct method of grinding, can continue to use the saw blade within a reasonable life, if not correctly grinding, it will only reduce the due efficacy and quality of the circular saw blade.
it is strictly forbidden to grind only from the front corner surface or only from the rear corner surface, which will greatly shorten the service life of the circular saw blade and affect the next grinding state!
another important point is that the whole worn area should be fully grinded. The circular saw blade is grinded on an automatic grinder. If it is grinded manually 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 being greatly worn, it is necessary to leave enough lateral protruding parts from the side of the sawtooth to the saw body. On the other hand, the largest lateral protruding part should be no more than 1.-1.2 mm per side to ensure the stability of saw teeth.
chip removal groove
ensure the chip removal space as much as possible, and avoid grinding the chip removal groove at the same time because of grinding the sawtooth.
if the sawtooth collapses, you must go to the grinding center to change the tooth. When welding, pay attention to using appropriate welding sound or other solder, preferably using a high-frequency welder.
leveling and stressing
If you want to ensure the quality of the circular saw blade after grinding, please be sure to use the leveling and stressing process, 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 add stress to give the saw body strength and elastic characteristics, which is an essential process for thin sawing blades; The relationship between the outer diameter of circular saw blade and the outer diameter of flange can be found in DIN883 standard. The outside diameter of the flange shall not be less than 25-3% of the outside diameter of the circular saw blade.
effect analysis of cemented carbide saw blade of circular saw blade
under normal circumstances, most circular saw blades in the market can be ground after being used for a certain period of time. 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 for one or three times, and the specific number of times needs to be based on the actual use.
There are several ways to grind cemented carbide saw blades, but alloy grinding wheels are generally used for grinding, and what we should pay attention to is the quality after grinding, that is, the use after repair;
effect analysis: according to the practical situation, we can judge that users are most concerned about:
1. service life
effect analysis: will the service life of cemented carbide saw blades 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 7% or even higher than the previous one, which requires users to find a regular and experienced manufacturer for grinding operation when choosing a grinder.
2. Quality of cutting
Effect analysis: The quality of workpiece cutting is a responsibility to the market and customers. If the quality of the cut workpiece decreases after grinding the cemented carbide saw blade, it is a very pessimistic thing, which will affect the development of enterprise business. If customers are not satisfied with the quality, there is no need for subsequent grinding. In view of this situation, in fact, users don't have to worry too much. Under normal circumstances, the grinding of cemented carbide saw blades will not affect the quality of cut workpieces. The original intention of grinding itself is to maintain the sharpness and cut quality of serrations. As long as users don't choose small workshops or informal enterprises when grinding, they can generally ensure the core of quality.
3. Stability during sawing
Effect analysis: As for 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 grind the alloy saw blade is easy to use? You basically 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 saw blades are different for different purposes. The thickness, hardness and material of your saw blade should be taken into account.
Question 1: How to sharpen the saw blade? Description of high-grade imported saw blade grinding
At present, there are many small saw blade grinding factories and manual workshops in the market. The grinding saw blade only carries out simple and rough treatment on the front angle of the sawtooth, and after the treatment, the original angle of the saw blade is changed. The back angle, side angle and tooth chamber of the saw blade have no treatment conditions at all, and the processed products are not tested and corrected at all after grinding.
according to the customer's feedback, our grinding fee is relatively high; Long grinding time, etc., make an explanation and introduce our grinding process flow testing technology and related technical standards.
a. after receiving the saw blades that customers need to grind, our company first establishes the customer's product files, soaks all the saw blades in warm water at 5 degrees Celsius for 3 minutes, then carries out cleaning, derusting and adhesive removal for preliminary visual inspection, marks the products with obvious defects that can no longer be ground, marks the customer number after cleaning, and directly returns them to the area, and sends them to customers together after the products that need 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 angle (to see if there are cracks, missing angles, etc.), and then put it on the projector to enlarge it by 5-1 times to determine the wear of the saw blade with the original angle of sawtooth; If the tooth missing angle is small, we can increase the grinding amount appropriately to reduce the production cost of customers.
C. if alloy teeth need to be replaced, use Germany KAHNY automatic tooth welding machine for tooth exchange.
D. Next, carry out the stress correction of the saw blade, which is a key process of grinding the saw blade; It needs to be completed by a very experienced technician. During the high-speed operation of the saw blade, the stress of the saw blade has changed under the action of external force, so the sawing path will become larger. Surface roughness and other phenomena; We all require stress adjustment for more than 2 times; If it can be corrected within the standard range (referring to Japan's technical standard for the production of concurrent-use saw blades), we will proceed to the next process. Otherwise, we will contact our customers and ask for their opinions. If the customers require grinding, we will carry out precise grinding. However, after completion, we will attach specific data of saw blade deviation to the saw blade package. We first use a 2-grit diamond grinding wheel imported from Japan for rough grinding, and then use a 6-grit grinding wheel for precision grinding.
e. check the vibration rate in the next step, and then carry out the final inspection according to step b after passing the test. After passing the test completely, place it in the delivery area, and hand over the work order to the business to complete the whole grinding process.