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

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

Compared with standard milling cutters, high-speed steel ball end milling cutters have the following characteristics: The appearance is simple, bright, unique, novel and distinct; The geometric accuracy is 40% higher than that of standard products, and it is recommended for rough milling, semi-finishing and suitable finishing; Improve the front and rear corner finish, so that the cutting edge is sharp and chip removal is brisk. Relief edge width increased by 15%. Increased strength, stable and reliable; After a unique process, the service life is twice that of standard milling cutters, and it has a high cost performance. It can be used for both general-purpose equipment in traditional milling methods and CNC equipment. The milling cutter is used for processing high hardness materials, and the hardness of the workpiece is HRC50~55 degrees. Using the latest coating and nano-grade tungsten steel raw materials. The short-edge design is suitable for high-speed milling; dry cutting is also possible. Small-diameter ball-end and small-diameter flat-end milling cutters are designed with sharp rounded corners (a little R angle). Small-diameter ball end milling cutters can reduce chipping and increase tool life. High-speed steel ball end milling cutters can mill die steel, cast iron, carbon steel, alloy steel, tool steel, and general iron materials, and are end mills. Ball nose milling cutters can work normally in high temperature environments. High-speed steel ball end milling cutter application: widely used in various curved surfaces, arc groove processing. High temperature resistance: The maximum temperature for maintaining cutting performance is 450-550/500-600 degrees Celsius. The edge of the high-speed steel ball end mill with a large R angle is stronger than the sharp corner of the end mill, and it is not easy to collapse, that is, the life is more stable than that of the end mill. In addition, when it is used for 3D machining, the processing area of the ball cutter is R Corner cutting edge, machining distance and depth of cut can use larger values, the machining efficiency is improved and the quality of the machined surface is also improved.

Thread milling cutters mainly use thread turning tools to turn threads or use taps and dies to manually tap and buckle. Compared with traditional thread processing methods, thread milling has great advantages in processing accuracy and processing efficiency, and it is not restricted by thread structure and thread rotation during processing. For example, a thread milling cutter can process a variety of different rotation directions. Internal and external threads. For the thread that does not allow transitional buckle or undercut structure, it is difficult to machine using traditional turning methods or taps and dies, but it is very easy to achieve using CNC milling. In addition, the durability of thread milling cutters is more than ten times or even dozens of times that of taps, and in the process of CNC milling threads, it is easy to adjust the size of the thread diameter, which is difficult to achieve with taps and dies. Due to the many advantages of thread milling, the current milling process has been widely used in mass thread production in developed countries. Thread milling cutter classification: 1. Integral type: suitable for small and medium diameter thread milling of steel, cast iron and non-ferrous metal materials, smooth cutting and high durability. Thread cutters with different coatings are used to process different materials. 2. Welding type: DIY type thread milling cutter used to process deep holes or special workpieces and weld the head of the thread milling cutter to another tool. The cutter has poor strength and flexibility, and its safety factor depends on the workpiece material and the technology of the thread milling cutter maker. 3. Replaceable blade type: It is composed of a milling cutter bar and blades. Its characteristics are that the blades are easy to manufacture and low in price. Some threaded blades can be cut on both sides, but the impact resistance is slightly worse than that of integral thread milling cutters. Therefore, this tool is often recommended for machining aluminum alloy materials. Advantages of thread milling cutter: 1. The processing efficiency of thread milling cutter is much higher than that of wire tapping. 2. Blind hole thread milling cutters can be milled to the bottom, but not wire tapping. 3. The finish is good, and the teeth milled by the thread milling cutter are more beautiful than the wire tap. 4. A thread milling cutter can process internal and external threads of different rotation directions, but wire tapping is not acceptable. 5. Thread milling cutter is not full-tooth contact cutting, and the load and cutting force of the machine tool are smaller than that of wire taps. 6. When processing large threaded holes, the efficiency of wire tapping is low, and the thread milling cutter can be instantaneously realized. 7. An optional thread milling cutter bar can replace metric, American, and English blades, which is economical. 8. When processing high-hardness threads, the thread taps are severely worn and even unable to be processed. The thread milling cutter can be easily realized. 9. The thread milling cutter cuts into powdery short chips, and there is no possibility of entanglement. The wire tap is processed into spiral iron chips, which is easy to entangle the tool. 10. Easy to install and clamp. Flexible tapping tool holder is required for tapping. ER, HSK, hydraulic, thermal expansion and other tool holders for thread milling cutters can be used. 11. For some materials, thread milling cutters can drill, mill teeth and chamfer at one time, but wire taps cannot. 12. For threaded holes with the same pitch and different sizes, several taps need to be replaced, and thread milling cutters can be used universally. 13. The cost is lower. Although a single thread milling cutter is more expensive than a wire tap, the cost of a single threaded hole is higher than that of a wire tap. 14. The precision is higher, the thread milling cutter realizes the precision with the tool compensation, and the customer can choose the thread precision he needs at will. 15. Long life, the life of thread milling cutter is more than ten times or even dozens of times that of wire tap, reducing the time of tool change and machine adjustment. 16. Don't be afraid of breaking. After the wire tap is broken, the workpiece may be scrapped. Even if the thread milling cutter is manually broken, it is easy to take out, and the workpiece will not be scrapped.  

High-speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or high-speed steel, commonly known as white steel. High-speed steel tools are tougher and easier to cut than ordinary tools. High-speed steel has better toughness, strength and heat resistance than carbon tool steel, and its cutting speed is higher than that of carbon tool steel (iron-carbon alloy). Many, hence the name high-speed steel; and cemented carbide has better performance than high-speed steel, and the cutting speed can be increased by 2-3 times. Features The red hardness of high-speed steel can reach 650 degrees. High-speed steel has good strength and toughness. After sharpening, the cutting edge is sharp and the quality is stable. It is generally used to manufacture small, complex-shaped tools. Cemented carbide Tungsten steel drill bit material (hard alloy) The main components of the drill bit material are tungsten carbide and cobalt, which account for 99% of all components, and 1% is other metals, so it is called tungsten steel (hard alloy). Tungsten steel is a sintered composite material composed of at least one metal carbide . Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, and tantalum carbide are common components of tungsten steel. The grain size of the carbide component (or phase) is usually between 0.2-10 microns, and the carbide grains are bonded together using a metal binder. The bonding metal is generally iron group metals, and cobalt and nickel are commonly used. So there are tungsten-cobalt alloys, tungsten-nickel alloys and tungsten-titanium-cobalt alloys. Tungsten steel drill bit material sintering molding is to press the powder into a blank, then heat it into a sintering furnace to a certain temperature (sintering temperature), keep it for a certain time (holding time), and then cool it down to obtain the tungsten steel material with the required performance. Features: The red hardness of cemented carbide can reach 800-1000 degrees. The cutting speed of cemented carbide is 4-7 times higher than that of high-speed steel. High cutting efficiency. The disadvantages are low bending strength, poor impact toughness, high brittleness, low impact resistance and low vibration resistance.

The main difference between a milling cutter and a drill bit is: the side edge of the milling cutter has a relief angle, so it can be cut sideways. The side edge of the drill bit has no relief angle, so it cannot be cut laterally and is used for axial drilling. Milling cutter: It is a rotary cutter with one or more teeth used for milling. When working, each cutter tooth intermittently cuts off the margin of the workpiece. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines. In order to ensure that a sufficiently high average chip thickness/feed per tooth is used, the number of teeth of the milling cutter suitable for the process must be correctly determined. It is roughly divided into: 1. Flat-end milling cutter, rough milling, remove a lot of blanks, small area horizontal plane or contour finish milling. 2. The ball end milling cutter can be used for semi-finishing and finishing milling of curved surfaces; the small ball end milling cutter can finish milling steep surfaces/small chamfers of straight walls and irregular contour surfaces. 3. The flat-end milling cutter has a chamfer, which can be used for rough milling to remove a large amount of blanks, and also for fine milling of small chamfers on the flat surface (relative to the steep surface). 4. Forming cutters, including chamfer cutters, T-shaped cutters or drum cutters, tooth cutters, and inner R cutters. 5. Chamfering cutter, the shape of the chamfering cutter is the same as the chamfering shape, and it is divided into milling cutters for round chamfering and oblique chamfering. 6. T-shaped milling cutter can mill T-slots. 7. Tooth type milling cutter, milling out various tooth types, such as gears. 8. Rough milling cutter, a rough milling cutter designed for cutting aluminum-copper alloys, can be processed quickly.