CNC milling cutter is the main tool for mold processing, and its processing capacity accounts for about 80 % -90 % of the total amount of mold cutting, thus becoming the development focus of die processing tools.
In the process of milling machine with numerical control milling cutter, it is very important to choose the correct number of milling cutter teeth in order to give full play to the maximum efficiency of machining. For example, a thin-tooth milling cutter with a diameter of lOOmm has only 6 teeth, while a dense-tooth milling cutter with a diameter of lOOmm can have 8 teeth. The density of the knife teeth will affect the production efficiency and the quality of the product. If the teeth are dense, the efficiency of production will be improved, and the quality of the workpiece will be better. However, the density of the teeth will also cause inconvenience in the discharge of the chips. According to the diameter of the knife teeth, it can be divided into sparse teeth, fine teeth, and dense teeth.
The choice of the number of Sawtooth teeth must make the chips properly curled and easy to leave the cutting area. The improper chip tolerance space will lead to choke chips, damage the blade and may damage the workpiece. At the same time, the saw blade should have sufficient density to ensure that at any time during the cutting period no less than a blade is being cut, and if this can not be guaranteed, it will cause severe impact. This will lead to serious consequences such as the breaking of the blade, the damage of the tool, and the overload of the machine tool.
With the Advancement of numerical control technology and the general improvement of automation, the production and application of machining center machine tools, numerical control lathes, and numerical control milling machines are increasingly extensive, and the demand for high-precision and high-efficiency numerical control milling machines is also increasing. The three-edged milling cutter is one of the more popular ones. Its saw blades are also diverse. The following Symer small editor will briefly introduce some of the related basic knowledge and issues to pay attention to:
The basic knowledge points of the three-sided edge milling cutter saw blade:
Teeth: No teeth, thick teeth, middle teeth, fine teeth
Teeth: pointed teeth, rounded teeth,
Tooth opening method: milling teeth, grinding teeth, full grinding teeth
Surface coating: Color, titanium coating, nitriding coating, colorful coating.
Path: mainly used for iron, aluminum, copper and other metal materials in a narrow and deep slot processing or cut. Can also be used for plastic, wood and other non-metal milling processing. Super hard material saw milling cutter, carbide saw blade is mainly used for the milling of difficult cutting materials(heat-resistant steel, stainless steel and other high-strength steel). High speed round saw blades are suitable for cutting: iron pipes, copper tubes, aluminum tubes, corner steel, stainless steel and other materials. Fine teeth are generally used for processing steel and cast iron, and for processing shallower slots or cuts; There are fewer teeth, and thicker milling cutters are generally used to process tired metals such as aluminum and copper, and to process deeper slots or cuts. High speed steel round knives can be used to cut cloth, plastic, rubber, various paper products, but also can cut meat and bones.
When using the three-edged milling cutter saw blade, you must pay attention to the following matters:
1) It must be determined that the cut material has indeed been fixed.
2) Cut conditions must be set according to the cut material.
3) When installing the saw blade, the scrap of the fixture part must be cleaned, and then pay attention to the direction of rotation, so that the saw blade is actually fixed.
4) When starting and stopping cutting, do not enter the knife phthalein quickly, otherwise it may cause broken teeth and damage.
5) Full use of cutting oil. (Want to select cutting oil with the cut material)