In CNC Milling, it can cause vibrations due to the limits of cutting tools, handles, machine tools, parts or accessories. To reduce vibrations, certain strategies must be taken into account.
01 Cup tool
1) For grinding the face, the direction of the cutting force must be considered.
A) When using 90 ° fraigning, the cutting force is mainly concentrated in the radial. In the state of the long suspension, this will cause the grinding cutter to flower;
b) The 45 ° milling striker can produce an axial and radial force which is distributed evenly.
c) The round knife and the milling striker will guide most of the force along the main axis, in particular in depth. In addition, the 10 ° milling cutter transmits the main cutting force to the main axis, thus reducing the vibrations caused by the extension of the long knife.
2) Select the diameter as small as possible for the process.
3) DC must be 20 to 50% larger than AE.
4) Select sparse teeth and / or non-attribution of teeth distance boxes.
5) The millingr with a light weight is beneficial, such as the millingr with an aluminum alloy knife.
For thin parts, use large main partial corners = small axial cutting force;
02 knife handle
The use of the Coromant Capto® modular knife system can assemble the required length of the tool while maintaining high stability and a minimum jump volume.
1) Keep the assembly of the tool as high as possible and as short as possible.
2) Select the diameter / size as much as possible.
3) Use the Coromant Capto® connection cane suitable for excessive size strawberries to avoid using a narrowing diameter.
4) For small -scale strawberries, if possible, use a tapered rod.
5) In the last walking process in the depths of the parts, use the extended tool on the predetermined location. Adjust the cutting settings as a function of the length of each tool.
6) If the speed of the spindle exceeds 20,000 rpm, use a balanced dynamic tool and cutting handle.
Sur-Taille milling cutter
Make sure to use the length of the knife as much as possible and the length of the length
03 Vibration mill
If the extension is greater than 4 times the diameter of the tool, the Till vibration trend can become more obvious.
04 Cup blade
To reduce the cutting force:
1) Select a light-wad-l and thin coating material with a sharp cut blade.
2) Use a blade with an arc ray with a knife point and a small parallel blade strap
Sometimes more depreciation can be reduced by adding more damping to the system. Use a larger cutting blade type slot and a slightly used cutting blade.
05 Cutting parameters and programming of the tool path
1) Make sure you locate the fragment of crusher on the surface of the milling surface.
2) For the 90 ° KAPR black grinding cutter or the vertical shot, use the radial radial depth (maximum AE = 25% × DC) and a great axial depth (maximum AP = 100% × of).
3) When grinding the face, use a small AP and deep gaojin cut in FZ and the round blades or the high-corner high-replica with a small main corner.
4) Avoid vibrations in the area through the programming of a large arc knife.
5) If the thickness of the crumbs becomes too thin, the cutting blade will be perplexed instead of cutting, which will cause vibrations. In this case, the quantity of each teeth should be increased.
06 Machine-Tool
The state of machine tools can have a greater impact on the trend of grinding and vibrations. The wear of the pin shaft or wear of the power agency will result in poor treatment performance. Choose the treatment strategy and cutting force carefully to fully use the stability of the tool-tool.
The main axis of each machine tool has unstable areas that are easy to vibrate. The stable cutting area is described by the stability diagram and increases with the increase in speed. Even as low as 50 rpm, the increase in speed can make the cutting process to move from the unstable state of the vibration to a stable state.
07 POX AND ACCESSORIES
When crushing the walls / fine rooms with a base and / or a luminaire, consider the following points:
1) The lighting must be close to the workbench machine.
2) Optimize the tool path and the power direction with the highest resistance of the tool-tool / luminaire to obtain the most stable cutting conditions.
3) Avoid treatment in the direction where the part is not fully supported.
4) When the rigidity of the luminaire and / or the room in a specific direction is bad, the inversion can reduce the trend of vibrations.
When the rigidity of the luminaire is poor, use the steering towards the tool-tool
Please note that the first cut should be made 1/2 of the second cutting depth, and the second cut is executed in half the third cutting depth, etc.
Daguang focuses on providing solutions such as precision CNC machining services (3-axis, 4-axis, 5-axis machining), CNC milling, 3D printing and rapid prototyping services.
