A machining process for an engine crankshaft
A processing technology and engine technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of difficult chip removal by the drill bit, the inner wall of the drilled hole is not smooth, and the life of the drill bit is affected, so as to achieve easy chip removal and convenient replacement. , the effect of increasing the service life
Active Publication Date: 2020-06-02
WENLING XINDU MACHINERY
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Problems solved by technology
It is an important part of the engine. Its material is made of carbon structural steel or ductile iron. There are two important parts: the main journal, the connecting rod journal, and others. When machining the existing crankshaft, the main shaft needs to be The existing drill bit is not easy to remove chips, and the inner wall of the drilled hole is not smooth. Long-term straight drilling of the drill bit will easily affect the life of the drill bit. Due to the different specifications of the crankshaft, the diameter of the drill hole is also required. Different, personnel need to change the drill bit to deal with different specifications of the crankshaft
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[0032] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0033] Such as Figure 1 to Figure 6 Shown, a kind of processing technology of engine crankshaft, concrete steps are as follows:
[0034] S1. Forging treatment: Forging the ductile iron QT800-6 blank, the forging temperature is controlled at 1000 ° C ~ 1300 ° C;
[0035] S2. Rough turning: rough turning main journal and connecting rod journal;
[0036] S3. Drilling treatment: Fix the forged crankshaft blank on the fixture, and replace the original punching head of the ZK8210 machine tool with the punching device 1. The ZK8210 machine tool drives the punching device 1 to adjust to t...
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Abstract
The invention relates to an engine crankshaft machining process. The engine crankshaft machining process comprises the following steps of forging treatment, rough turning, drilling treatment, heat treatment, finish turning, grinding machining and check and packaging. Through the engine crankshaft machining process, the problems that during machining of an existing crankshaft, a main journal and aconnecting rod journal need to be drilled, an existing drill bit is not prone chip removal, the inner wall of a drilled hole is not smooth, the service life of the drill bit is affected easily due tolong-term straight drilling of the drill bit and a user needs to replace the drill bit for crankshafts with different specifications due to the fact that the specifications of the crankshafts are different and the requirements for the diameters of drilled holes are also different can be solved; the functions of drilling main journals and connecting rod journals of the crankshafts with different specifications can be achieved, and the corresponding drill bits can be adjusted according to the requirements for the hole diameters. The engine crankshaft machining process has the advantages that theinner wall of the hole is smooth through twice drilling, chip removal is easy, and the service life is prolonged.
Description
technical field [0001] The invention relates to the field of processing technology of engine crankshafts, in particular to a processing technology of engine crankshafts. Background technique [0002] The crankshaft is the main rotating part of the engine. After the connecting rod is installed, it can undertake the up and down reciprocating motion of the connecting rod and turn it into a circular rotating motion. It is an important part of the engine. Its material is made of carbon structural steel or ductile iron. There are two important parts: the main journal, the connecting rod journal, and others. When machining the existing crankshaft, the main shaft needs to be The existing drill bit is not easy to remove chips, and the inner wall of the drilled hole is not smooth. Long-term straight drilling of the drill bit will easily affect the life of the drill bit. Due to the different specifications of the crankshaft, the diameter of the drill hole is also required. Different, ...
Claims
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IPC IPC(8): B23P15/14B23P23/02
CPCB23P15/14B23P23/02
Inventor 耿思宇
Owner WENLING XINDU MACHINERY