Method for processing high power medium-speed diesel linkage rod tooth form and special processing knife tool

Abstract

The invention discloses a method for processing the gear form of a connecting rod of a diesel engine, and a special processing cutter. The method is to use a milling processing method to mill the gear forms of a connecting rod body and a connecting rod cover of the diesel engine, the milling processing method has good processing quality and high processing efficiency, the shapes of the processed gear forms of the connecting body and the connecting cover have good consistency, the contact area after pairing and matching is large, and e contact points are even. The special cutter is a milling cutter for milling the gear forms of the connecting body and the connecting cover of the diesel engine, and in particular is a formed ball head taper shank cutter, wherein the molded lines formed by the rotary cuttings of cutting edges are consistent with the molded lines of the gear form of the connecting rod, the tool bit groove type of the formed ball head taper shank cutter is spirality of 35 degrees, the number of the cutting edges is two, the proper alignment of the cutting edges and the tool shank is within 0.01 millimeter, the cutter material is stable and high wear resistant ultrafine particle hard alloy, and the cutting edges adopt TiAlN coating. The special cutter has the characteristics of high wear resistance, stable performance, short manufacturing cycle, and low cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a method for processing the tooth profile of a connecting rod of a high-horsepower medium-speed diesel engine and a special processing tool thereof. Background technique [0002] The connecting rod is the core part of the diesel engine. As shown in Figure 1 to Figure 3, the connecting rod of the diesel engine includes the connecting rod body 1 and the connecting rod cover 2, and then engages through the teeth (I and II in Figure 1 and Figure 2, Figure 2). As shown in 3), it is formed by connecting rod bolts, so the processing accuracy of the connecting rod tooth profile is very high, and for high-power medium-speed diesel engine connecting rods, the contact area of ​​the tooth surface must reach 80%, and The tooth surface requires a roughness of Ra1.6 or above. [0003] In the prior art, there are mainly the following methods for processing the tooth...

AI Technical Summary

Problems solved by technology

The processing method using powerful grinding has high efficiency and good quality, but it must be used together with CNC powerful slow-feed grinding machine and formed grinding wheel. Bottleneck, and due to strong grinding, cracks may appear on the grinding surface, so each workpiece must be inspected by surface flaw detection

The quality of the hobbing method is poor. Generally, the tooth profile of the connecting rod body and the connecting rod cover needs to be mutually ground, which makes its efficiency low, and the price of special gear hobbing equipment and special forming hobs is also very expensive; As for wire cutting, it is not suitable for mass production due to high cost and low efficiency.

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