1. It is used when it is difficult to fix large workpieces; when precision workpieces are fixed at one time and multiple surfaces need to be processed; when processing at any angle relative to the reference surface. 2. The processing is maintained at a special angle for profiling milling, such as ball end milling; the hole is in the hole, and other tools cannot penetrate the hole to process the small hole. 3. Oblique holes and grooves that cannot be processed by the machining center, such as the internal holes of the engine and the casing.1. General angle heads use non-contact oil seals. If cooling water is used during processing, it needs to be operated before spraying water, and the direction of the cooling water nozzle should be adjusted to spray water toward the tool to prevent cooling water from penetrating into the body. In order to prolong life. 2. Avoid continuous processing and operation at the highest speed for a long time. 3. Refer to the parameter characteristics of the angle head of each model and use it under appropriate processing conditions. 4. Before use, you need to confirm the test run for a few minutes to warm up the engine. Every time you process, you need to select the appropriate speed and feed for processing. The speed, feed, and depth of cut during processing should be adjusted in a gradual manner until the maximum processing efficiency is obtained. 5. When processing the general standard angle head, it is necessary to avoid processing materials that will produce dust and particles (such as: graphite, carbon, magnesium and other composite materials, etc.)