xiehe model

During the Swiss heart machining process, there will be more or less jitter. In order to ensure better accuracy, we need to take some measures to avoid device shaking. Today I will give you a brief introduction.

1. Use sharp blades to reduce the cutting force of the core machine: the machine clamp blades are divided into coated blades and uncoated blades. Uncoated blades are generally sharper than coated blades because if the blade is to be coated it must be passivated (ER treated) as the sharp edge will affect the bond strength of the coating at the edge.

2. When selecting the cutting depth, avoid cutting depth equal to the radius of the tool nose arc.

3. When the cutting depth is constant, using a smaller tool nose arc radius will undoubtedly reduce the cutting force, especially the radial cutting force, and the radial cutting force is to produce slender rod-shaped tools or workpieces. main cause of vibration. Be it collision or milling. Under the same depth of cut, the radius of the tool nose radius is larger. Slender toolbars have a greater tendency to vibrate.

4. For slender tools, the circular insert tool can suppress vibration very well. Milling cutters are the opposite of blending cutters. The closer the lead angle is to 90°, the greater the radial cutting force and the vibration of the tool holder. Therefore, in the end milling of the deep cavity of the mold, the CNC milling machine usually chooses a milling cutter with a cutting angle of less than 1mm at a leading angle of 45°. Usually round or ball knives are used.

5. Numerical control centering machines use slender end mills to mill deep cavities, often using plunge milling. Plunge milling means that the tool enters the tool axially like a drill. 7. Mill deep cavity. When drilling in the inner hole, the edge angle of the insert should be as small as possible. The secondary lead angle is large, and the secondary edge is processed. The contact area of the tremor on the surface is very small, and it is difficult to convert the tremor into vibration. There is also little chance of the secondary cutting edge being squeezed.

If it is found that the processing accuracy is not up to standard, the user needs to reflect. There are three reasons, including:

1. Do not use a small amount of lubrication: when the core walking machine is working, it is often necessary to perform a series of operations such as milling and cutting on the profile, because the tool and the profile will reciprocate repeatedly. During this period, severe friction will inevitably occur between the tool and the profile, and necessary preventive measures must be taken to damage the tool due to frictional heat. At present, in order to effectively reduce tool heating and wear, many companies will introduce necessary cooling during processing.

2. Quality factor: Compared with the lubrication factor, the quality of the equipment is often more serious, because once the machining accuracy of the centering machine cannot meet the standard due to the poor quality of the equipment, it will be very troublesome to deal with the problem.

3. Operational factors: No matter how high the equipment is, human assistance is also essential. When operating a CNC machine for profile processing, parameter settings and personal actual operating experience will affect the processing accuracy of the equipment. If the quality of the equipment is reliable, but the problem of substandard processing accuracy still occurs, then the "operator" is often the culprit.

Shenzhen Xiehe Company is mainly engaged in the production and manufacture of non-standard precision hardware parts. It has been deeply involved in the industry for many years and has rich experience. If you have CNC processing, CNC lathe processing, and five-axis processing services including aluminum, copper, stainless steel, iron, titanium alloys, plastics and other products, you can contact Xiehe, and we will provide you with an integrated solution.