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How to choose a face milling cutter for processing automobile cylinder blocks and heads

2021-04-13 14:52:32

As the provider of driving energy, the automobile engine is known as the heart of the automobile. The processing quality of its parts determines whether the engine can output power economically and efficiently to drive the vehicle.

 pcd grinding

In the processing of automobile engine cylinder block and cylinder head parts, milling is very important. Mainly reflected in the following aspects:

1.Milling processing takes a long time and has a greater impact on the processing cycle of the entire production line

2.The consumption of milling blades accounts for a large proportion of the entire part processing cost

3.The milled surface will be used as the positioning datum between processes, which has a greater impact on the quality of the final product

4.The milled surface is still an assembly benchmark, and its surface quality directly affects the assembly accuracy and performance of the engine

More cutting tools has developed face milling cutter solutions for different workpiece materials based on the characteristics of engine parts.

 

Aluminum alloy material processing

pcd grinding

This tool directly welds the PCD blade to the tool holder, and the axial runout of each tool tip can be precisely adjusted through the adjustment mechanism on the tool holder. The tool holder is locked on the cutter head radially with screws, which occupies a small space, can achieve a dense tooth design, and improve processing efficiency. The blade installation groove is designed as a dovetail groove structure, the tool will not fly out even if the locking screw damages the blade during high-speed processing, ensuring the safety of personnel and equipment.

The cutter head is made of aviation aluminum alloy material, the weight of the cutter head is greatly reduced, and the stability during high-speed processing is improved. The surface of the cutter head has been anodized, and the wear resistance is significantly improved, which is beneficial to improve the service life of the cutter head. The cutter head is designed with an internal cooling structure to ensure a good cooling and chip removal effect.

 

Case

Finish milling of joint surface of aluminum alloy cylinder head

Cutter head: Φ220 mm (Z=22)

Blade: PCD blade

Processing parameters:

Vc= 2800 m/min;

N = 4050 rpm;

Fz= 0.08 mm/r;

F=7130 mm/min

Tool life: 12000-16000 pcs

pcd grinding

 



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  • Advantages of processing aluminum with PCD tool
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    Advantages of processing aluminum with PCD tool

    How to select PCD tool? Generally speaking, the larger the PCD size, the stronger the tool wear resistance. Usually finishing or super finishing, the selection of fine particle PCD, and coarse particle PCD tool selection. Tool manufacturers often recommend the use of fine particle PCD grades for silicon-free and low-silicon aluminum alloys and the use of coarse-particle PCD grades for high-silicon aluminum alloys for the same reason. PCD tool processing surface quality in addition to see the granularity of the tool, also mainly depends on the quality of the cutting edge of the tool, so the quality of PCD tool must be better. PCD cutting edge common processing methods generally have two kinds, one is through the way of slow-feeding wire cutting processing, this way of processing cost is low, but the quality of the edge is general. And the other is through laser to rough machining, the cost is slightly higher, but the quality of the edge is much better than slow-feeding wire cutting processing. There is another is to use laser rough machining and then grinding to finish, the edge quality is best.

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