The difference between end mills and keyway cutters: 1. The end mill is generally four-bladed and three-bladed, and the keyway cutter is two-blade (favorable to ensure the diameter accuracy after re-grinding); 2. The main cutting edge of the end mill is designed on the circumference. The end face is on the cutting edge, and the main cutting edge of the keyway milling cutter is on the end face, and the cutting edge is on the circumference. 3. Therefore, the end mill should not be constituted axially. It must be used. It can be a tendency into the knife or spirally. The amount is not so large, because the chip pocket on the cutting edge is shallow. The keyway milling cutter feeds in the axial direction. Therefore, it will wear near the end, mainly re-grind the end, and the cutting edge will not re-grind to ensure the matching precision of the machining groove (H9, N9).
Augusttools Cnc Endmill Carbide Cutting HRC55 3 Flutes Milling Cutter Roughing End Mill Metal Cutter Aluminum Copper Processing
Corn milling cutter, otherwise known as corn cob milling cutter, is also called scaly milling cutter. The surface is dense spiral mesh, and the groove is relatively shallow. It is generally used for material processing such as some functional materials, especially like some composite materials such as carbon fiber Kraft materials (like the outer shell of an airplane’s wing) such as fiberglass! !
Solid carbide scaly milling cutter, the cutting edge is composed of numerous cutting units, the cutting edge is sharp, which greatly reduces the cutting resistance, and can realize high-speed cutting, achieving the effect of milling and grinding, and improving the composite material. Processing efficiency and surface quality extend the life of the milling cutter.
4mm 6mm Carbide Tungsten Corn Cutter cutting PCB milling bits end mill CNC router bits for Engraving machine
Wood processing,MDF,plywood and multilayer PCB, aluminum-plastic
panels,such as cutting hollow
Double-edged positive and negative spiral chip removal structure for long service life
Sharp edge and high wear resistance, professionlly designed for wood milling.
Cutting the upper and lower sides smooth and burr-free.
Large spiral flute, imported tungsten steel base material
What is the difference between a corn cutter and Wave edge milling cutter
Wave edge milling cutter, which is based on the spiral rake face of an ordinary high-speed steel end mill, and uses a special milling fixture to reprocess the spiral rake face into a wavy spiral surface, which intersects the flank face into a wavy cutting blade. The peaks and valleys of two adjacent waved edges are staggered along the axis by a certain distance, so that the cutting width is significantly reduced, and the actual cutting thickness of the cutting edge is increased by about three times. The cutting edge avoids the surface hardened layer and cuts into the workpiece. The wavy edge makes the inclination angle, working rake angle and cutting load of the cutting edge different at all points. And the wave blade makes the tooth pitch in the same end section different. These factors greatly reduce the periodicity of cutting force changes, making the cutting process more stable. When milling workpieces with rough surfaces such as gas-cut steel plates, the wave-shaped end mills can especially show their excellent cutting performance.
Wave edge milling cutters are spiral milling cutters. Corn milling cutters generally refer to insert-type milling cutters, and spiral blades refer to integral milling cutters. The general corn milling cutter is suitable for large-scale deep hole machining, while the spiral blade milling cutter is suitable for various face milling, side milling and complex profiling milling
Maintenance method for linear guides. Linear guides are precision parts, so they require a very cautious attitude when used. Even if high-performance linear guides are used improperly, they can not achieve the expected performance, not only the accuracy is reduced, the service life is shortened, and It is very easy to damage the rail. Therefore, the following should be used when using:
1. Keep the guide rail and its surrounding environment clean. Even if the dust that is invisible to the naked eye enters the inside of the slider, it will increase the wear of the guide rail.
Second, the installation needs to be careful and careful, does not allow strong stamping, does not allow hard objects (awl and the like) to hit the rail slider, does not allow the pressure to be transmitted through the rolling elements.
Third, use appropriate and accurate installation tools to use special tools as much as possible, the mechanism to avoid the use of cloth, short fibers and the like.
Fourth, to prevent corrosion of the guide rails, it is recommended to install with gloves when installing. If you take it directly by hand, you must wash off the sweat on your hands and apply high-quality mineral oil before handling. Pay special attention during the rainy season and summer. Rust protection.
However, under certain special operating conditions, it is possible to obtain a longer life than conventional calculations, especially in the case of light loads. These special operating conditions are: when the rolling surfaces (rails and sliders) are effectively treated by a lubricating film Separation and restriction of surface damage caused by contaminants; in fact, under ideal conditions, so-called permanent service life is also possible.
Oil lubrication should be pre-filled with grease in the sealed guide rail, and filled with a proper amount of grease inside the casing, and filled or replaced at intervals. In addition, lubrication is required for multiple slides. The machine also adopts the centralized grease supply method in which the pipeline is connected to each lubrication place; the grease lubrication can be used for filling the lubricating grease for a long time without replenishing for a long time, and the structure of the sealing device is also simple, so it is widely used. Oil lubrication is relatively simple, and regular lubrication can greatly improve the service life of the linear guide and maintain a certain precision and preload.
linear guide rail HGR15-L=200 300 400 500 600~1500mm 4pcs linear block carriage HGH15CA or HGW15CA slider CNC parts
Because aluminum alloys are light in weight, strong in oxidation resistance and corrosion resistance, most of the frames are now made of aluminum alloy. However, aluminum alloys are divided into many types, of which 6061 7005 7075 aluminum is the most common frame material, the following is a brief introduction.
Magnesium and silicon are the main alloys, and the total composition ratio is low. The strength is lower than 7005 aluminum. However, since the alloy composition is simple and the content is low, the welding and pressing are relatively easy, so the price is also cheap.
Zinc is the main alloy (including many other substances), and the proportion of the components reaches 6% (it is relatively high). The strength is higher than 6061 aluminum, but the hardness is larger due to more alloy components. Therefore, welding and pressing are difficult. Therefore, the general price of 7005 aluminum is higher than 6061 aluminum.
Zinc is the main alloy (including many other substances), but the content is much higher and the hardness is higher than the hardness of the steel. However, due to the large alloy composition, the hardness is extremely high. Therefore, welding and pressing are very difficult.
If the air filter is not cleaned for a long time, the car can still start driving. The surface does not seem to affect the performance of the car.
However, the dust and impurities adsorbed by the filter element are increased. If the filter is blocked for a long time, the filter hole in the filter element will be blocked.
The gas volume causes the power to drop, the fuel consumption increases, and some small impurities are forced into the engine, which accelerates the wear of the moving parts in the cylinder and shortens the life of the machine.
Motorcycle Parts CNC Crafts Air Cleaner Intake Filter Alumimum
Square linear guides, some models are allowed to use in all directions (not all)
Round linear guide, if the slide does not have a bracket, the bearing is rounded and can be used in all directions.
For circular linear guides with brackets, the slider opening should be as close as possible to the direction of the force. If it is not guaranteed, only the compass and bearing dimensions can be increased to meet the requirements.
Specific indicators can be found in the relevant product manual, with detailed design data
10pcs/lot LM8UU LM10UU LM16UU LM6UU LM12UU LM3UU Linear Bushing 8mm CNC Linear Bearings for Rods Liner Rail Linear Shaft parts
Motorcycle valves are designed to deliver oil-gas mixtures to the engine, exhaust gas and dissipate heat.
The valve (famen) is the control part of the fluid conveying system. It has the functions of cut-off, regulation, diversion, countercurrent prevention, stabilization, diversion or overflow relief.
Valves used in fluid control systems range from the simplest cut-off valves to various valves used in extremely complex automatic control systems. Valves can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chromium-molybdenum steel valves, chromium-molybdenum-vanadium steel valves, dual-phase steel valves, plastic valves, non-standard valve materials.
90 degree valve stems allow easier filling and easier access for checking tire pressure. Racing CNC Aluminum valve stems are made from High Quality 6061-T6 CNC Aluminum with top quality rubber seals. The aluminum is hard anodized with bright and vibrant colors.
With the continuous development of science and technology, 3D printer seems complex, but it is not really complex. As long as the working range of components is divided, it is easy to understand how FDM3d printer works. It is necessary to construct parts through machine components. In terms of large classification, 3D printer can be basically divided into electronic parts, mechanical parts and software parts.
Software part: Simply speaking, the 3D printer makes drawings through 3D design model software; divides the model into innumerable layers with 3D slice software, the thickness of which is basically equal to the accuracy of the 3D printer, and then generates innumerable printed coordinate commands for the mechanical part to execute.
Mechanical part: The mechanical part is the positioning part to execute the printing order. The XYZ space axis is composed of printer, stepping motor, feeding bracket, synchronous wheel, conveyor belt, printing sprinkler, printing platform and so on. The printing coordinates generated by the software part are positioned accordingly.
Electronic part: Electronic part can be understood as a bridge between software and mechanical part. It mainly includes instruction and data buffer generated by software, motor control, temperature control and so on. The coordinate instruction generated by software is executed by mechanical part controlled by electronic part to achieve the purpose of accurate printing.
“Face milling” is used for machining planes on vertical milling machine, end du milling machine or gantry milling machine. There are cutter teeth on the end face and the circumference, and there are also coarse teeth and fine teeth. Its structure has integral type, insert type and indexable type.
Face milling cutters have a cutting edge on the end face and outer circle perpendicular to the arbor, which are mainly used for milling planes. The cutting edge of the outer circle is the main cutting edge, and the cutting edge of the end face plays the same role as the scraper. Face milling cutters have shorter blades than sleeve end mills.
High-speed steel face milling cutters are generally used to process medium-width flat surfaces. The standard milling cutter diameter range is 80 ~ 250 mm. The cutting efficiency and processing quality of carbide face milling cutters are higher than that of high-speed steel milling cutters, so at present, hard alloy face milling cutters are widely used to process planes
Face milling cutters are mainly used for processing planes, which are characterized by: high production efficiency; good rigidity, can use a larger feed; multiple cutter teeth are involved in cutting at the same time Sharpening, good working stability; adopting rigid inserting structure, easy to sharpen and replace the cutter teeth, and long tool life. Face milling cutters are divided into two categories, one is to fix the hard alloy blade to the cutter teeth by brazing, and then install the cutter teeth on the cutter body of the milling cutter. This is called an insert-type face milling cutter; second The class is to directly install the hard alloy blade on the cutter body of the milling cutter, and then fix it with screws, etc. This is called the indexable clamp milling cutter. The face milling cutter has two axial rake angles and a radial rake angle. The direction of the two rake angles is selected according to the material and cutting conditions of the object to be processed, that is, positive +, negative -, or zero.
The tools for processing flat workpieces are mainly face milling cutters, whose cutting edges are covered with circumferences and end faces. Among them, the cutting edge of the end face is an auxiliary cutting edge. The diameter of the face milling cutter is large, so the cutter teeth and the cutter body are usually separated when the cutter is selected, so as to achieve the purpose of long-term use.
Choice of face milling cutter diameter
(1) The surface area is not large. When choosing a tool, pay attention to choose a tool or a milling cutter with a diameter larger than the width of the plane, so that a single plane milling can be achieved. When the width of the plane milling cutter reaches 1.3 to 1.6 times the width of the processing surface, it can effectively ensure the better formation and discharge of chips.
(2) When the area of the processing plane is large, it is necessary to select a milling cutter with an appropriate diameter and mill the plane multiple times. Among them, the diameter of the milling cutter will be limited due to the limitations of the machine tool, the depth and width of the cutting, and the size of the blade and tool;
(3) When the machining plane is small and the workpieces are scattered, an end mill with a small diameter needs to be selected for milling. In order to maximize the processing efficiency, the milling cutter should have a diameter of 2/3 in contact with the workpiece, that is, the diameter of the milling cutter is equal to 1.5 times the width of the milling. In down milling, the reasonable use of the ratio of the tool diameter to the cutting width will ensure that the milling cutter has a very suitable angle when cutting the workpiece. If you are not sure whether the machine tool has enough power to maintain the cutter at such a ratio, you can divide the axial cutting thickness in two or more times to maintain the ratio of the cutter diameter to the cutting width as much as possible.
“End milling” is used for smaller planes. It is mainly used for processing grooves and stepped surfaces. The cutter teeth are on the circumference and the end surface, and they cannot be fed in the axial direction during work.
End milling is one of the most used milling cutters on CNC machine tools. Both the cylindrical surface and the end surface of the end mill have cutting cutters. They can be cut simultaneously or separately. Mainly used for plane milling, groove milling, step face milling and profiling milling.
End milling can be used as face milling. However, because the main declination angle is 90°, the force of the tool is mainly radial force in addition to the main cutting force, which is easy to cause deflection and deformation of the arbor, and it is also easy to cause vibration, which affects the processing efficiency. Therefore, except for similar to the thin-bottom workpiece Except for special reasons such as small axial force or occasional face milling, which is occasionally necessary to reduce the variety of tool stocks, it is not recommended to use an end mill to machine flat surfaces without steps.
The application range and requirements of high-speed steel end mills are relatively broad, and even if the cutting conditions are slightly improperly selected, there will not be too many problems. Although the carbide end mill has good wear resistance during high-speed cutting, its use range is not as wide as that of high-speed steel end mills, and the cutting conditions must strictly meet the requirements of the tool.
Machining centers, engraving machine spindle coolants and cutting fluids are completely different concepts. The internal cooling of the main shaft is only one type of cutting fluid, which is ejected from the internal cooling pipe of the main shaft. The spindle coolant is a liquid that protects the spindle from overheating and through the inside of the spindle. It is continuously circulated and requires external cooling. Use two isolated pipes separately from the cutting fluid. The spindle coolant will not be sprayed into the machine. If this happens, there is a problem with the circulation line in the spindle. The spindle coolant and cutting fluid cannot be separated if they are mixed together. Now we will introduce a coolant suitable for machining centers and engraving machine spindles: BMW’s special spindle coolant. Baoma brand special spindle coolant is a new generation of environmentally-friendly spindle special coolant, which meets the EU ROHS standard and reaches the level of high-quality foreign products. It has excellent cooling and antifreeze properties, anti-corrosion, anti-rust and safe use. Non-toxic, suitable for cyclic cooling of various mechanical equipment.
Instructions: 1. Dilute with tap water and mix well, the dilution ratio is 1:20 (if it is configured with industrial pure water, it will not scale, the effect is better). 2. As the coolant evaporates, please add new liquid in the same proportion in time. If the machine is shut down for a long time, please discharge the coolant and reconfigure it when it is turned on. 3. The circulation system in the water tank should be kept clean. If it is found that the coolant is deteriorated or corrupted, it is recommended to replace it. It usually takes about 150 days to replace it.
Precautions: 1. It should be kept in a cool warehouse to avoid child contact. 2. Inadvertently fall into your eyes and mouth, rinse with water.
The rail slider and the linear bearing are essentially two product accessories.
The appearance of the linear bearing is obviously different from the appearance of the guide rail slider: the linear shaft bearing guide shaft has a cylindrical shape; and the guide rail slider shaft has a square structure.
The main difference lies in the installation position: the linear bearing is generally fixed at both ends, and the intermediate suspended connecting member covers all or most of the radial direction of the optical axis; the guide rail slider generally has one side of which is closely attached to the equipment mounting base and is fixed by bolts.
In terms of cost: the same brand, linear guides are more expensive than linear bearings;
From the equipment: linear guides are more accurate than linear bearings, with greater load, higher stability and longer life;
From the market point of view: linear guides are more suitable than linear bearings, and linear bearings are relatively only suitable for primary processing;
This is the sliding unit with the aluminium case, shafts and aluminium rail for preventing deflexion. This is the complete sliding unit systems and can be clamped simply tightening by bolt with high accuracy. The support rail unit provides maximum rigidity and stiffness to the shaft throughout the whole stroke, and ensure the performance of the unit.
If mach3 is controlled, open the control box and take out the z-axis forward and reverse signals to control the laser.Under the knife to open the laser,Put a knife is closed,
The z-axis depth of the knife path can be changed to 0.1 mm of the lower knife.