Horizontal milling machine with cylindrical milling cutter
Upper machining plane. The cutter teeth are distributed on the circumference of the milling cutter, and are divided into straight teeth and two types according to the tooth shape. There are coarse teeth and fine teeth. The helical coarse tooth milling cutter has fewer teeth, high tooth strength and large chip holding space, which is suitable for rough machining; Fine tooth milling cutter is suitable for finishing. Face milling cutter: used for
Vertical milling machine End milling machine Gantry milling machine
On the upper processing plane, there are cutter teeth on the end face and circumference, and there are also coarse teeth and fine teeth. Its structure has three types: integral type, inlaid type and adjustable type.
End mill: It is used for machining grooves and step surfaces, etc. The cutter teeth are on the circumference and end face, and cannot feed along the axial direction when working. When the End milling cutter has an end tooth passing through the center, it can be fed axially (usually the End milling cutter is also called; key; it can be fed axially).
Three side milling cutter: Used for processing various grooves and step surfaces, with cutter teeth on both sides and circumference.
Angle milling cutter: used for milling grooves with a certain angle, including single angle and
Double angle milling cutter ⑥
Saw blade milling cutter: It is used to process and cut off work pieces, and there are many cutter teeth on its circumference. In order to reduce the friction during milling, there are two sides of cutter teeth. In addition Key way milling cutter
Dovetail milling cutter,T-slot milling cutter and various Formed milling cutter II. It is divided according to the structure of milling cutter: integral type: the cutter body and cutter teeth are made into one. Integral welding tooth type: for cutter tooth.
Hard alloy
Or other wear-resistant tool materials, and on the tool body. Insert type: the cutter teeth are fastened on the cutter body by mechanical clamping. The replaceable cutter teeth can be the cutter head of the whole cutter material or the cutter head of the welding cutter material. The milling cutter with the cutter head mounted on the cutter body is called
Internal sharpening
Formula; The tool head grinded separately on the fixture is called
External grinding ④
Indexable type: This structure has been widely used for face milling cutter, end milling cutter and three side milling cutter.
Milling insert price and classification
You must have heard of milling insert, but you don’t know much about milling insert. In fact, the milling insert is a rotary tool with one or more cutter teeth. The tooth back of the milling cutter has three forms: straight line, curve and broken line, which can meet the needs of different people. Now there are many manufacturers and merchants in China who start to manufacture milling cutters for people. The market prices of different brands of fresh meat are also different. Now let’s briefly introduce the prices and classifications of milling cutters in the market.
Milling insert price
Milling cutter is a rotary cutter with one or more cutter teeth for milling. During operation, each cutter tooth will cut off the allowance of the work piece intermittently. Milling cutter is mainly used for machining plane, step, groove, formed surface and cutting work piece on milling machine. The selling price in the market is more than yuan (source network, for reference only).
Use of milling insert
Generally divided into:
1. Flat end milling cutter, perform rough milling, remove a large number of blanks, and finish milling small horizontal plane or contour.
2. Ball end milling cutter for semi finish milling and finish milling of curved surface; Small ball end milling cutter can finish milling small chamfers of steep surfaces/straight walls and irregular contour surfaces.
3. The flat end milling cutter has chamfers, which can be used for rough milling to remove a large number of blanks, and for fine milling of small chamfers on flat surfaces (relative to steep surfaces).
4. Forming milling cutter, including chamfering cutter, T-shaped milling cutter or drum cutter, tooth cutter and internal R cutter.
5. Chamfer cutter. The shape of the chamfer cutter is the same as that of the chamfer cutter, which is divided into milling cutter for circular chamfer and oblique chamfer.
6. T-shaped cutter, which can mill T-shaped groove.
7. Tooth type cutter, milling various tooth types, such as gears.
Classification of milling insert
Sharp tooth milling cutter
A narrow edge band is grinded on the back cutter surface to form the back angle. Because the cutting angle is reasonable, its service life is high. The tooth back of the sharp tooth milling cutter has three forms: straight line, curve and broken line. Straight tooth back is often used for fine tooth finishing milling cutter. The cutter tooth strength of curved and broken line tooth back is good, and it can bear heavy cutting load. It is commonly used for coarse tooth milling cutter.
Relieving milling cutter
The back of Archimedes helix is machined into the tooth back of Archimedes helix by relieving (or grinding). The blunt end of the milling cutter only needs to regrind the front, which can keep the original tooth shape unchanged. It is used to manufacture various shaped milling cutters such as gear milling cutters.
In recent years, China’s manufacturing industry has developed rapidly with the introduction of Made in China to the world. In addition, various drilling and cutting processes will be carried out in the equipment manufacturing. The traditional cutting materials not only have a short service life, but also have very poor cutting quality. However, the emergence of milling insert solves this problem. The milling insert can be used to process grooves, formed surfaces, cut off work pieces, etc
The sales volume in the market is very hot. The price and classification of milling insert can be understood.
What are the key points of milling?
1. Operators shall wear tight work clothes with tight cuffs; Female comrades should wear protective helmets; Wear protective goggles during high-speed milling; Wear masks when milling iron castings; It is strictly prohibited to wear gloves during operation to prevent hands from being rolled between the rotary cutter and the work piece.
2. Before operation, check whether all parts and safety devices of the milling machine are safe and reliable; Check whether the safety and reliability of the electrical parts of the equipment are good.
3. When loading and unloading work pieces, the worktable should be backed to a safe position. When using a wrench to fasten work pieces, the force direction should avoid the milling cutter to prevent the wrench from hitting the cutter or fixture when slipping.
4. When installing and disassembling the milling cutter, it is necessary to pad it with a special pad, and do not hold the milling cutter directly with your hand.
5. When milling irregular work pieces and using vises, dividing heads and special fixtures to hold work pieces, the center of gravity of irregular work pieces and vises, dividing heads and special fixtures should be placed in the middle of the workbench as much as possible to avoid uneven force on the workbench and deformation.
6. During rapid or automatic feed milling, it is not allowed to move the worktable to both ends to avoid crushing the screw rod.
7. When the machine tool is running, it is not allowed to adjust and measure the work piece and change the lubrication method to prevent hands from touching the tool and hurting fingers.
8. Do not brake by hand before the milling cutter rotation stops completely.
9. Do not remove the chips by hand or blow with mouth during milling to prevent the chips from damaging the skin and eyes.
10. In case of motorized rapid feed, the hand wheel clutch shall be opened to prevent injury caused by rapid rotation of the hand wheel.
11. When reversing the worktable, stop the reversing handle at the middle position first, and then reverse. Direct reversing is not allowed.
12. When milling key way shafts or cutting thin work pieces, it is strictly forbidden to damage the dividing head or worktable.
13. When milling the plane, the cutter head with more than four cutter heads must be used, and the appropriate cutting parameters must be selected to prevent the machine tool from generating vibration during milling.
14. After working, stop the worktable at the middle position and drop the lifting table to the lowest position.
15. For CNC vertical milling machine, pre selection of relevant work program, spindle speed, tool feed, tool movement track, continuous offside and other items shall be carried out according to process requirements before operation. Place the electric knob at the “alignment” position for test run. After confirming that there is no problem, place the electric knob at the automatic or semi-automatic position for operation.
How to judge whether the milling cutter blade can be used continuously
1) The vibration of the milling machine is intensified, or even makes abnormal noise, or the power consumption of the machine tool increases by 10%~15%;
2) The quality of the machined surface of the work piece is obviously reduced, and the dimensional accuracy is reduced;
3) The work piece edge has reamed burr or peeling;
4) When machining with carbide milling cutter, serious spark phenomenon occurs;
5) The cutting color is obviously changed, or the cutting shape is deformed.
Development and maintenance of CNC lathe tool~~, high score
How to grind the milling cutter correctly?
1. Soak the grindstone in water for one to five minutes. When there is oil, use some vegetable oil or other grease as lubricant.
2. Fix the grindstone with wood or base.
3. Press the blade on the grindstone at an angle of 15 degrees.
4. Grind from left to right or from right to left. It is easy to roll the knife without up and down planing, and the grinding is uneven.
5. When the brightness and sharpness of the blade begin to increase, it can be polished again with low density.
A sharpener is a stone used to sharpen knives. Any sand rock can be sharpened – grey clayey sand rock may be the best. Quartz is also good, but it is very rare. Granite is also available. The key is that the sharpened blade must be sharp and durable, and it is not easy to cause lack of knock.
What are the use methods and maintenance skills of woodworking cutter and milling cutter?
To achieve the purpose you require, be sure to use a tool with short cutting edge as far as possible. If the cutting edge is too long or the tool body is too long, it will cause vibration and deflection during machining, which will lead to tool damage and affect the quality of machining. We recommend using tools with larger shank diameters.
1. Precautions
(1) The woodworking milling cutter is specially designed for portable and desktop woodworking carving machines, and cannot be used on electric drills, drilling machines and other machines.
(2) The cutter can provide smooth surface for hardwood, cork, synthetic board and other wood processing workers, but avoid processing copper, iron and other metal materials and sand, stone and other non wood materials.
(3) The jacket with proper size must be used, because the jacket with severe wear, insufficient roundness and taper in the inner hole cannot provide sufficient clamping force, which may cause vibration or tool handle breaking and flying off.
(4) Do not assume that the new jacket must be safe and reliable. When uneven contact marks or grooves are found on the tool shank after the tool is clamped, it indicates that there is slippage and the inner hole of the jacket is deformed. At this time, the jacket should be replaced immediately to avoid accidents.
(5) After the tool is clamped, if it is found that the tool has run out during operation, the machine should be stopped immediately, and the tool should be clamped repeatedly for several times, so that the tool handle can fully contact the jacket, and then the work can be carried out.
(6) The tool shank shall be in good contact with the jacket. The tool shank must be completely inserted into the jacket and tightened firmly, so as to provide sufficient clamping force for the tool. Only a small part cannot be inserted into the jacket, otherwise the tool handle may break and the tool may be damaged.
(7) Use proper eye and ear protection device during operation
(8) The body, clothes and other sundries shall not be close to the knife in work
2. Select the appropriate cutting amount
(1) The cutting speed of different wood materials is very important for the service life of tools and the processing quality of wood pieces. Reasonable cutting parameters make the processing easier, better and safer.
(2) High speed cutting can be used for general wood, and low speed cutting and slowing down the advance speed are better for harder wood and tools with larger blade diameter. The propulsion speed should be average, not fast or slow, and should be stable. If there is a stay in the cutting process, the tool will be burned and the service life of the tool will be greatly reduced.
(3) Cutting speed depends on the following three aspects: 1. Wood material: 2. Type and specification of tools: 3. Equipment
(4) If larger diameter cutters are used, the machining can be completed by several feeds, which can improve the service life of the cutters and make the operation safer. Large diameter cutters usually use high-quality desktop equipment
3. Tool maintenance.
Diane
Phone/Whatsapp:8618622997325
Post time: Oct-20-2022