China Supal (Changzhou) Precision Tools Co.,Ltd company news

In order to ensure the welding quality, the welding knife should be carefully checked to find out the cause of the defects to improve. Before the inspection, the car knife should be sprayed or gently grinds the welds and impurities attached to the surface of the blade, and washed with kerosene. The inspection items and requirements are as follows: 1. Check the intensity of welds: Use a green carbonic silicon wheel to grind the back of a car knife, check the thickness of the welded layer, and the thickness requirements are below 0.15 mm. There is no shortage of pores and welds at the bottom surface of the knife tip support. The welds that are not filled with welds should not be more than 10%of the total length of the weld. If there is a hole, the blade will fall off when cutting. 2. Check the position of the blade in the knife groove: such as the stipulation of blade misplaced and sagging exceeding the technical conditions. 3. Check the welding intensity: Use a wooden hammer or copper hammer to hit the blade with a medium force, or to knock on the knife with a hammer with a hammer. Check the welding intensity of the blade, not necessarily check them one by one, and also adopt a random inspection method. Fourth, check the flatness of the blade: If there is a clear pit on the blade, it means that the blade is overheated and deforms, and the new blade should be burned. V. Check the crack: After the blade is cleaned by the kerosene, if the blade has a crack. The kerosene will penetrate into the crack and the black line appears. You can observe it with the naked eye. You can also observe 10-40 times the magnifying glass. Check the blade cracks, and you can also use color detecting method: 65%of kerosene, 30%transformer oil, and 5%pine oil -made solution are adjusted, and some sultan reds are slightly added. Place the car blade and blade in the solution for 10-15 minutes, then wash it with water, apply a layer of white soil (kaolin), and observe the surface after baking. It is revealed, and you can see it with the naked eye. The blade with cracks cannot be used, and it needs to be welded

Although the proportion of high -speed steel occupation is reduced in the consumption of tool materials, high -speed steel has a relative advantage in the threaded knife. In 2007, various types of tool consumption of various types of tools in the world, high -speed steel tools accounted for 38%, hard alloy knives accounted for 62%, and the medium threaded tools accounted for 18%of the total tool consumption. Among the threaded tools, high -speed steel materials accounted for To 95%. High -speed steel materials and knives are specially valued by high -speed steel for taps, and they are divided into high -speed steel for high -speed steel to develop and use. In addition to continuously improved the original steel number to gain morality, tap public high -speed steel is also launched, such as the International River, such as the International River. Metallurgical technology has HYTM2 and TV3 steel, French Erasteel gets GV3, Japan Nachi has HMT12 steel. After testing Germany, Japan, and South Korea, the invention of taps. Foreign tap materials are M35 (ie, W6MO5CR4V2CO5) or GV3, M3 (ie W6MO5CR4V3) and other cobalt -containing high -performance high -performance high -performance high -performance high -speed steel and powder high -speed steel. The materials are still based on the traditional technology of high -speed steel M2 (ie W6MO5CR4V2). This article discusses the production of M2, M3, and M35 high -speed steel for domestic traditional craftsmanship. The hardness and red hardness of the high -speed steel, the strength of the bending strength, and the cutting of these materials are cut into the cutting function. The tap is different under the premise of the geometric parameters and cutting of the specific products in this article.

Non -standard tools are a collective name for all non -standard knives, including non -standard car knives, knife, milling cutter, re -knife, knife, etc. Through these non -standard design For processing characteristics, we can also customize non -coating tools. During the customization process, the non -standard knife has encountered the problem of surface roughness. It can be achieved by changes in the geometric angle of the blade part. If the degree of the front and rear angles can be increased significantly, it will significantly improve the surface roughness of the workpiece. Non -standard tools can meet the production needs of different workpieces and have significant significance for mechanical production. There are several types of surface defects in design and production. The following editors will list one or two, and attach the reasons and solutions, hoping to help reference. 1. Circular ripple Reason: During the cutting process, the cut force changes greatly, and the work of pulling the knife is unobstructed, which causes the knife teeth to cut uneven cutting in the direction of the circle. Solution: Check whether the width of the blade is uniform and small, etc., especially the processing accuracy of the first seven or eight blade teeth of the school's quasi -department. From the perspective of use, the pulling speed should not be too high; the accuracy and stiffness of the bed should be good, and the phenomenon of tremor does not produce; whether the bending of the knife is super worse and the radial beating. 2. Blade grind Reason: The general wear volume VB needs to be grinded when it exceeds 0.3mm. Solution: During heavy grinding, it is generally performed on a dedicated grinding bed. For the shorter knife, it can also be grinded along the front knife surface with a disc wheel of the universal tool grinding machine. 3. Scratch Reason: Slightly. Solution: Check whether there is a gap in the injury of the knife tooth blade; whether the dandruff on the cutting teeth (especially the fine teeth) is not cleaned; The smooth steps are squeezed out of the non -smooth scroll. Surgery and scratching processing surfaces. 4. Squeeze the point Reason: Caused by severe squeezing friction between the rear knife surface and the processed surface. Solution: Adopt a well -performed cutting fluid, sufficient pouring, and proper heat treatment of workpieces with high hardness to reduce its hardness to eliminate this defect.

The characteristics, use, and type of commonly used re -re -cutting Characteristics of the re of the re-re-blade: The pillar is the cutting of the puppets, and the re-blade is cut in 4-8 blade, so the efficiency is high), the high-precision, and the hinge blade mouth with the blade band, so they get the obtained Better roughness; The pores that are used for drilling, expanding holes, and holes on the hinge workpiece are mainly to improve the processing accuracy of the holes and improve the roughness of the surface of the workpiece. The amount of cutting tools is generally very large. The re -cuttings used to process cylindrical holes are more commonly used. The re -cutter used to process the cone hole is a cone -shaped re -cutter, which is less used. From the perspective of usage, the housing and the machine are used for the re -re -blade, and the machine can be divided into a straight handle re -blade and a taper re -cutle. The hand is used in a straight handle. Most of the hinge structure consists of the working part and the handle. The work part is mainly cutting and calibrated, and the diameter of the calibration office has inverted cone. The handle is used to be held by the clip, which is divided into a straight handle and a cone handle. There are many types according to different purposes, so there are many standards for re -cuttings. Some of our more common standards include re -re -blades, straight handle machines with rectums, rectors of cone handle machines, and straight handle. Centellar re -re -blade and so on. There are two types of knife). The pupils of the re -cutter have straight grooves and spiral grooves. The hinge precision is D4, H7, H8, H9 and other precision levels. It is divided into three types: cylindrical, cone -shaped and doorway -shaped according to the shape of the reed holes; The installation method is divided into two types: handle and suit type; Divide straight grooves and spiral grooves according to the shape of the altitude Portum customization: In customized non -standard tools, the re -cutter is a more common custom -made tool. According to different products, deep, diameter, accuracy, roughness requirements, and workpiece materials are made Life, accuracy, roughness, and stability.

The shovel is a flat -shaped car knife that is equal to the zero front angle. While the main axis of the milling cuttings, the main axis of the lathe is rotated, and the shovel is advanced to the milling axis under the cams with the Archimede thread. It can be seen that the movement trajectory of any relative milling cutter on the cutting blade is the Akimid snail line, that is, the tooth curve of the shaped milling cutter from the shovel shovel is the Archimede snail line. Because the shovel knife is shovel along the radius of the milling cutter, it is called a radial shovel tooth. When the milling cutter turns the Δ0 corner, the cam is turned around the Δθ angle, and the shovel shovel out of the back of a blade tooth. Then, when the milling cutter turned the Δ1 corner, the cam was turned around the φ1 angle, and the shovel was quickly reset and then the return motion. In short, when a milling cutter turns a corner of the tooth, the shovel is completed. Each time this process is repeated, the shovel is cut off a tooth of the milling cutter, and the shovel is restored in situ.

The main functions of sculpting tools and stone carving machines Main functions: stone engraving, stone relief, stone yang carving, stone yin carving, stone line carving, stone cutting, stone hollow. 1. Classification of stone carving machine carving tools: A series (ordinary knife alloy knife): uses high -performance alloy materials, double -edged design, good sharpness, high cost performance, and easy to grind by hand. Disadvantages: Because the angle is not standard (there is another larger angle at the tip of the knife), it is not suitable for relief. Generally used for sculpting bluestone, marble! B series (standard angle alloy knife): uses high -performance alloy materials, double -edged design, angle standards, engraving, fine relief effects. Generally used for sculpting bluestone, marble! Can be made into a flat -bottomed knife with a flat bottom The C series (Metro Molf Diamond Mill Earlier): Metro Molf Diamond Stone Sword, Military High -tech "Moisturizing Diamond Stone Technology" manufacturing! It has the characteristics of good sharpness, high sculpture efficiency, no deformation of the carved knife head, high sculpture accuracy! Therefore, when carving marble, bluestone, sandstone and other materials, it is often used as the first choice for high -efficiency relief, which is also a weapon for engraving. D series (overall alloy triangular knife): The overall alloy triangular knife uses ultra -particle ultra -wear -resistant alloy. The abrasion resistance is much higher than other triangular knives on the market. Angle standard, good lettering effect! Customers with a universal grinding machine can use this knife. If there is no universal grinding machine, it is not recommended to use it! E series (PCD polycrystalline diamond knife): Adopt imported polycrystalline diamond blade, the quality is far from cheap domestic blade comparable! Using vacuum welding technology, blade does not damage or fall off; micro -grinding technology makes the blade sharpness and optimization of strength. It is generally used to engraved the small words of granite. Good hardness, high life, good engraving effect. When using, you should pay attention to the flexible knife, do not go too hard! F series (sintering diamond grinding head knife): sintering diamond grinding head is generally used for granite milling bottom. Because the knife is made of multi -layer diamond sintering, it has a very high life span! The disadvantage is that the sharpness is not high, and the knife head will deform. Therefore, sculpture marble, bluestone and other materials, in order to obtain higher output and carving effects, it is not recommended to use a sintering knife. When making granite and other difficult processing stones, in order to avoid too high knives, sintering grinders can be selected! G series (diamond four -edge knife): Generally engraved with granite small characters or line carving. The advantage is that the life span is high, the disadvantage is that the sharpness is relatively poor, and the carving depth is shallow!

In the process of deep hole machining, problems such as the dimensional accuracy, surface quality and tool life of the workpiece often occur. How to reduce or even avoid these problems is an urgent problem to be solved at present. The following are 6 common problems and solutions for deep hole machining of tools, I hope to help everyone! 1‍, the aperture increases, the error is large‍‍‍‍ (1) Causes The design value of the outer diameter of the reamer is too large or the reamer cutting edge has burrs; Cutting speed is too high; Improper feed rate or excessive machining allowance; The main declination angle of the reamer is too large; reamer bent; Chip edge adhered to the reamer cutting edge; When sharpening, the swing of the reaming cutting edge is out of tolerance; Inappropriate selection of cutting fluid; When installing the reamer, the oil on the surface of the taper shank is not wiped clean or the taper surface is bumped; After the flat tail of the taper shank is offset into the machine tool spindle, the taper shank taper interferes; The main shaft is bent or the main shaft bearing is too loose or damaged; Reamer floating is not flexible; When the axis is different from the workpiece and the force of both hands is uneven when reaming by hand, the reamer shakes from side to side. (2) Solutions Appropriately reduce the outer diameter of the reamer according to the specific situation; reduce cutting speed; Properly adjust the feed or reduce the machining allowance; Appropriately reduce the main declination angle; Straighten or scrap bent unusable reamers; Carefully trimmed with whetstone to pass; The control swing is within the allowable range; Choose cutting fluid with better cooling performance; Before installing the reamer, the reamer taper shank and the inside of the taper hole of the machine tool must be wiped clean, and the taper surface with bumps must be polished with whetstone; Grinding reamer flat tail; Adjust or replace the spindle bearing; Readjust the floating chuck and adjust the coaxiality; Pay attention to correct operation. 2. Aperture reduction (1) Causes The design value of the outer diameter of the reamer is too small; Cutting speed is too low; The feed rate is too large; The main declination angle of the reamer is too small; Inappropriate selection of cutting fluid; When sharpening, the worn part of the reamer is not worn off, and the elastic recovery reduces the aperture; When reaming steel parts, if the allowance is too large or the reamer is not sharp, it is easy to produce elastic recovery, which reduces the aperture and the inner hole is not round, and the aperture is unqualified. (2) Solutions Replace the outer diameter of the reamer; Appropriately increase the cutting speed; Appropriately reduce the feed; Properly increase the main declination angle; Choose oily cutting fluid with good lubricating performance; Replace the reamer regularly, and sharpen the cutting part of the reamer correctly; When designing the size of the reamer, the above factors should be considered, or the value should be selected according to the actual situation; For experimental cutting, take an appropriate allowance and sharpen the reamer. 3. The reamed inner hole is not round (1) Causes The reamer is too long, the rigidity is insufficient, and vibration occurs during reaming; The main declination angle of the reamer is too small; The reaming cutting edge is narrow; The reaming allowance is biased; There are gaps and cross holes on the surface of the inner hole; There are blisters and pores on the surface of the hole; The spindle bearing is loose, there is no guide sleeve, or the clearance between the reamer and the guide sleeve is too large, and the workpiece is deformed after being removed due to the thin-walled workpiece being clamped too tightly. (2) Solutions The reamer with insufficient rigidity can use the reamer with unequal pitch, and the installation of the reamer should adopt rigid connection to increase the main declination angle; Select qualified reamer to control hole position tolerance in pre-machining process; Adopt reamer with unequal pitch, adopt longer and more precise guide sleeve; Select qualified blanks; When using an equal-pitch reamer to ream more precise holes, the spindle clearance of the machine tool should be adjusted, and the matching clearance of the guide sleeve should be higher or an appropriate clamping method should be used to reduce the clamping force. 4. The inner surface of the hole has obvious facets (1) Causes The reaming allowance is too large; The rear angle of the cutting part of the reamer is too large; The reaming cutting edge is too wide; The surface of the workpiece has pores, sand holes and the spindle swing is too large. (2) Solutions Reduce the reaming allowance; Reduce the clearance angle of the cutting part; Grinding edge width; Select qualified blanks; Adjust the machine tool spindle. 5. The service life of the reamer is low (1) Causes Inappropriate reamer material; The reamer burns when sharpening; The selection of cutting fluid is inappropriate, the cutting fluid fails to flow smoothly, and the surface roughness value of cutting and reaming is too high. (2) Solutions Select the reamer material according to the processing material, and can use a carbide reamer or a coated reamer; Strictly control the amount of sharpening and cutting to avoid burns; Always choose the cutting fluid correctly according to the processing material; The chips in the chip flute are often removed, and the cutting fluid with sufficient pressure is used for fine grinding or grinding to meet the requirements. 6. The center line of the hole after reaming is not straight (1) Causes The drilling deflection before reaming, especially when the hole diameter is small, cannot correct the original curvature due to the poor rigidity of the reamer; The main declination angle of the reamer is too large; Poor guidance makes the reamer easy to deviate from the direction during reaming; The reverse taper of the cutting part is too large; The reamer is displaced at the gap in the middle of the interrupted hole; When reaming by hand, too much force in one direction forces the reamer to deflect to one end and destroys the verticality of the reamed hole. (2) Solutions Increase the hole reaming or boring process to correct the hole; Decrease the main declination angle; Adjust the appropriate reamer; Replace the reamer with a guide part or an extended cutting part;

To understand the milling cutter, you must first understand the knowledge of milling. When optimizing the milling effect, the insert of the milling cutter is another important factor. In any milling, it is an advantage if there are more than one inserts participating in the cutting at the same time, but the inserts participating in the cutting at the same time are advantageous. Too many numbers are a disadvantage. It is impossible for each cutting edge to cut at the same time during cutting. The required power is related to the number of cutting edges participating in the cutting. In terms of the chip formation process, cutting edge load and processing results, the milling cutter is relative to the workpiece. location plays an important role. In face milling, with a cutter that is about 30% larger than the cutting width and positioned close to the center of the workpiece, the chip thickness does not change much. The chip thickness in the plunge and exit is slightly thinner than that in the center cut. The radial cutting force and the axial direction of the milling cutter with a leading angle of 45 degrees are roughly equal, so the pressure generated is relatively balanced, and the requirements for the power of the machine tool are also relatively low, especially suitable for milling short-chip materials that produce chipping chips artifact. A milling cutter with round inserts means that the entering angle varies continuously from 0 to 90 degrees, depending on the depth of cut. The strength of the cutting edge of this kind of insert is very high. Since the chips generated along the long cutting edge are relatively thin, it is suitable for large feeds. The direction of the cutting force along the radial direction of the insert is constantly changing, and the pressure generated during the machining process. Will depend on the depth of cut. The development of modern insert geometry makes the circular insert have the advantages of smooth cutting effect, low power requirement of the machine tool, and good stability. Today, it is no longer an effective roughing cutter and is used in a wide range of face and end milling applications. Related to the chip thickness of milling is the main declination angle of the face milling cutter. The main declination angle is the angle between the main cutting edge of the insert and the surface of the workpiece. There are mainly 45-degree, 90-degree angles and circular inserts. The change of direction will vary greatly with the different entering angle: a milling cutter with a entering angle of 90 degrees mainly generates radial force, which acts in the feed direction, which means that the machined surface will not be subjected to excessive pressure , It is more reliable for milling workpieces with weak structure.

What are the characteristics of aluminum knife coating? 1. Hardness The high surface hardness brought about by the coating of aluminum knives is one of the ways to increase the life of the knives. In general, the harder the material or surface, the longer the tool life. The titanium nitride aluminum carbide coating has higher hardness than the titanium nitride coating. 2. Wear resistance Abrasion resistance refers to the ability of a coating to resist abrasion. While some workpiece materials may not be too hard on their own, the elements added during production and the processes used can cause tool cutting edges to chip or become dull. 3. Surface lubricity A high coefficient of friction increases cutting heat, which can lead to reduced coating life or even failure. And reducing the coefficient of friction can greatly extend tool life. A finely smooth or regular-textured aluminum knife coating surface helps reduce the heat of cutting, as the smooth surface allows the chips to slide quickly off the rake face to reduce heat generation. Coated tools with better surface lubricity can also be machined at higher cutting speeds than uncoated tools, further avoiding high temperature fusion welding with the workpiece material. 4. Oxidation temperature Oxidation temperature refers to the temperature at which the coating begins to decompose. The higher the oxidation temperature value, the more favorable it is for machining under high temperature conditions. Although the room temperature hardness of the coating may be lower than that of the coating, it has proven to be much more effective in high temperature processing. The reason the coating retains its hardness at high temperatures is that a layer of alumina forms between the tool and the chip, which transfers heat from the tool to the workpiece or chip. 5. Anti-sticking The anti-adhesion properties of the aluminum knife coating prevent or mitigate chemical reactions between the tool and the material being machined, preventing workpiece material from depositing on the tool. When machining non-ferrous metals (such as aluminum, brass, etc.), built-up edge (BUE) is often generated on the tool, resulting in tool chipping or workpiece size out of tolerance. Once the material being machined begins to adhere to the tool, the adhesion will continue to expand.

In machining, in order to maximize the machining quality and repeatability, the right tool must be selected and determined correctly, which is especially important for some challenging and difficult machining. This paper aims at some difficult machining conditions (such as high-speed tool and high-speed tool path) Today's CAD/CAM software systems can precisely control the arc length of the bite in a high-speed trochoidal toolpath (Note: a trochoidal toolpath is a curved path formed by a fixed point on a circle rolling along a straight line), while Get extremely high cutting accuracy. Even when the cutter cuts into corners or other complex geometries, its engagement does not increase. To take advantage of this technological advancement, tool manufacturers have designed and developed advanced small diameter milling cutters. Small-diameter cutters are less expensive than larger-diameter cutters and, by using high-speed toolpaths, tend to remove more workpiece material per unit time. This is because the larger diameter cutter has a larger contact surface with the workpiece, thus requiring lower feed rates and more traditional small feed rates. Therefore, small diameter milling cutters can achieve higher metal removal rates instead. However, tool designers still need to ensure that these small-diameter cutters are not only suitable for trochoidal cutting, but also match the workpiece material being cut. Today, the geometry of many high-efficiency tools is tailored to the specific material being machined and the cutting technique employed. For example, with an optimized toolpath, a full groove can be milled in H13 steel with a hardness of HRC54 with a 6-flute cutter. A slot with a width of 25.4mm can be cut with a milling cutter with a diameter of 12.7mm. If a 12.7mm diameter cutter was used to machine a 12.7mm width slot, the tool would have too much surface contact with the workpiece and cause the tool to fail quickly. A useful rule of thumb is to use a cutter with a diameter about 1/2 the size of the narrowest part of the workpiece. In this example, the narrowest part of the workpiece is a slot with a width of 25.4mm, so the maximum diameter of the cutter used should not exceed 12.7mm. When the radius of the milling cutter is smaller than the size of the narrowest part of the workpiece, the cutter has room to move left and right, and can obtain the smallest angle of engagement. This means that the milling cutter can use more cutting edges and higher feed rates. Machine rigidity also helps determine the size of the tool that can be used. For example, when cutting on a 40-taper machine, the cutter diameter should usually be