Most of the hole machining of the parts adopts a multi-blade composite type (blade machine clamp, insert welding combination) structure, and the grinding is replaced by reaming and squeezing. In the process of one-time walking, the hole finishing is completed, the rotation speed reaches 3000r/min, the cutting speed is 1.5~3m/min, the precision is 5~7, the roughness Ra=0.7μm, the gun drilling speed reaches 8000r/ Min, Ra = 2 μm. The precision boring and reamer produced by Mapal in Germany is widely used in the automotive industry due to its unique structure, ultra-precise internal hole precision, excellent surface roughness and high economic efficiency. The Mapal tool is a single-edged cutting tool with a precision ground indexable insert. Two or more supporting guide bars are arranged on the cutter body, and the support guide bars also support the corresponding positions at the same time as the blades enter the workpiece cutting, and absorb the vibration and resistance caused by the cutting, and ensure the inside. The roundness and cylindricity of the hole are within 1~3μm, and the aperture tolerance is up to H6. In the processing of valve tunnel holes in automobile engines, the machining accuracy and surface quality are superior to gun drilling. The cylinder hole boring adopts double-station, machine tool spindle built-in and axial reciprocating push-pull rod mechanism. The reciprocating passes are used for rough and fine boring, respectively, and the boring speed is up to 800 m/min.
MAPAL offers standard drills up to 30 times L/D in deep hole machining and non-standard drills according to customer requirements. Due to MAPAL's unique design concept and continuous technological innovation, MAPAL's deep hole drilling has a very good performance in chip removal, self-centering, guiding, stability and wear resistance, which can guarantee the processing quality of the hole.
The automotive industry has always been the main development area of ​​MAPAL, so MAPAL has rich processing experience in various types of hole machining in automobile engines.
Especially for interrupted hole machining, some holes have very high dimensional accuracy requirements, machining efficiency and stability are bottlenecks in machining, and MAPAL can provide a complete solution from roughing to finishing.
For example, the camshaft in the engine cylinder head and the crankshaft hole in the cylinder block are very critical parts, and have very high requirements for cylindricity, coaxiality, and straightness. MAPAL uses the tools shown in the figure to complete the machining tasks in the machining center. In most cases, it is not necessary to use a separate special machine, which greatly reduces the processing time and cost of the customer.
SYOUMYLED Solar Outdoor Flood Lights
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Shenzhen You&My Electronic Technology Co., Ltd , https://www.youmyledlight.com