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3 axis, 5 axis CNC milling precision machining
The CNC milling machine can process complex shapes of rotating bodies. In milling, the blank is first fixed, and a high-speed rotating milling cutter is used to move the blank on the blank to mill out the required shape and features. Traditional milling is mostly used to mill simple shape features such as contours and grooves. The CNC milling machine can process complex shapes and features. The milling and boring machining center can perform three-axis or multi-axis milling and boring processing for processing: molds, inspection tools, molds, thin-walled complex curved surfaces, artificial prostheses, impeller blades, etc. When choosing CNC milling parts, the advantages and key functions of CNC milling machines should be fully utilized.
Categories: aluminum milling parts, CNC milling services
Tags: aluminum milling parts, CNC machining, CNC Milling
CNC milling is a high-tech processing method for precision parts, which can be processed into parts with complex structures combined with square and circular shapes.
The CNC milling machine can process complex shapes of rotating bodies. In milling, the blank is first fixed, and a high-speed rotating milling cutter is used to move the blank on the blank to mill out the required shape and features. Traditional milling is mostly used to mill simple shape features such as contours and grooves. The CNC milling machine can process complex shapes and features. The milling and boring machining center can perform three-axis or multi-axis milling and boring processing for processing: molds, inspection tools, molds, thin-walled complex curved surfaces, artificial prostheses, impeller blades, etc. When choosing CNC milling parts, the advantages and key functions of CNC milling machines should be fully utilized.
Various types of materials can be processed, such as 316, 304 stainless steel, carbon steel, alloy steel, alloy aluminum, zinc alloy, titanium alloy, copper, iron, acrylic, Teflon, POM rods and other metal and plastic raw materials.
The difference between turning and milling
Turning and milling is a common metal cold working method. The difference from turning is that in milling, the tool rotates at a high speed under the drive of the spindle, while the workpiece is relatively stationary.
The difference between turning and milling:
Turning is used to machine rotating parts. The parts are clamped on the main shaft of the machine tool through the three gripping chucks and rotate at high speed. Then use a turning tool to move the tool according to the generatrix of the revolving body to cut out the shape of the product. The lathe can also process the inner hole, thread, biting, etc. The latter two are low-speed processing.
Milling process
(1) Milling the curve contour on the workpiece, straight line, arc, thread or spiral curve, especially the non-circular curve and list curve given by mathematical expression.
(2) Milling the spatial curve or surface of the given mathematical model.
(3) Although the milling shape is simple, the product has a wide range of sizes and positions where internal inspection is difficult.
(4) The milling machine can process cavities, box parts, etc. that are difficult to observe, control and detect when processed by ordinary machine tools.
(5) Holes or planes with strict size requirements.
(6) All simple surfaces or shapes can be processed by milling in one clamping.
(7) General processing that can effectively improve productivity and reduce labor intensity by using CNC milling processing.
The main processing objects suitable for CNC milling include the following categories: plane contour parts, variable bevel parts, spatial curved surface contour parts, holes and threads, etc.
Operation points of milling
- The milling machine operator should wear tight-fitting work clothes with cuffs tied tightly; Female operators must wear protective caps; Wear protective glasses when high-speed milling; Wear a mask when milling iron castings; It is strictly forbidden to wear gloves during operation to prevent your hands from being caught between the rotating tool and the workpiece.
2. Before operation, check whether the parts and safety devices of the milling machine are safe and reliable;
Check whether the electrical parts of the equipment are safe and reliable.
3. When loading and unloading workpieces, the workbench should be returned to a safe position. When using a wrench to tighten the workpiece, the direction of force should avoid the milling cutter to prevent the wrench from hitting the tool or fixture when it slips.
4. When assembling and disassembling the milling cutter, use a special pad to pad it. Do not hold the milling cutter directly with your hands.
5. When milling irregular workpieces and using vise, dividing head and special fixture to hold the workpiece. The center of gravity of irregular workpieces, vices, indexing heads, special fixtures, etc. should be placed in the middle of the workbench as much as possible to avoid uneven force and deformation of the workbench.
6. During fast or automatic feed milling, do not move the worktable to the two extremes to avoid squeezing the screw rod.
7. When the milling machine is running, it is not allowed to adjust, measure the workpiece and change the lubrication method to prevent the hand from touching the tool and hurting the fingers.
8. Before the rotation of the milling cutter is completely stopped, it is not allowed to brake by hand.
9. Do not remove the chips by hand or blow with your mouth during milling to prevent the chips from damaging the skin and eyes.
10. During motorized rapid feed, the handle wheel clutch should be opened to prevent the hand wheel from rotating quickly and hurting people.
11. When the workbench is reversing, the reversing handle must be stopped at the middle position first, and then reversing. Direct reversal is not allowed.
12. When milling keyway shafts or milling thin workpieces, prevent the surface of the indexing head or worktable from being milled.
13. When milling a plane, a cutter head with more than four milling cutter heads must be used, and an appropriate cutting amount must be selected to prevent the machine tool from vibration during milling.
14. After work, stop the workbench at the middle position, and drop the lifting platform to the lowest position.
15. For CNC vertical milling machines, pre-select items such as work procedures, spindle speed, tool feed, tool motion trajectory, and continuous offsides according to technological requirements before work. Put the electric knob in the "adjustment" position for trial run. After confirming that there is no problem, put the electric knob in the automatic or semi-automatic position to work.
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The workability is much worse than that of medium carbon steel. Taking the machinability of ordinary No. 45 steel as 100%, the relative machinability of austenitic stainless steel 1Cr18Ni9Ti is 40%; The relative turning workability of ferritic stainless steel 1Cr28 is 48%; Martensitic stainless steel 2Cr13 is 55%. Among them, austenitic and austenitic + ferritic stainless steels have the worst machinability.
Custom Copper Precision Turning Parts
Our company is good at turning all kinds of copper parts, all kinds of valve parts, electrical bronze parts, brass nuts, mobile phone antennas, external knurling (straight grain / twill / net grain) and so on. The picture on the left shows a turned copper core. Used in valves, the material is C3604 fast-cutting steel brass, and the copper turning parts customized according to customer requirements are used as the valve stem and valve core. Used in valves of internationally renowned brands. Automatic turning and forming, after the head milling edge and the rod milling edge, the angle is 60 degrees. Slotted head. The outer diameter is 12.7mm, and the total length is 70mm. The forming turning tool has been used many times in the processing of this copper precision part. In order to solve the accuracy of the R angle and chamfering of the inner groove, CNC machining was initially adopted. Later, in order to save costs, automatic lathe processing was used.
Milling Machine and Milling Technology
Milling refers to the use of rotating multi-edge tools to cut workpieces, and is a highly efficient processing method. When working, the tool rotates (does the main movement), and the workpiece moves (the feed movement). The workpiece can also be fixed, but the rotating tool must also move (to complete the main movement and the feed movement at the same time). The machine tools used for milling are horizontal milling machines or vertical milling machines, as well as large portal milling machines. These machine tools can be ordinary machine tools or CNC machine tools. Use a rotating milling cutter as a cutting tool. Milling is generally performed on a milling machine or a boring machine. Suitable for processing plane, grooves, various molding surface (flower key, gear and thread) and special shaped surface of the mold and the like.