CNC machine precision shaft parts are one of the typical parts often encountered in machines. Its main use is for transmission machinery systems, which can be used to transmit power, transfer rotational force, change the direction of motion, and support the various components of the mechanical system. It can also be used to support the overall structure of mechanical equipment and increase the stability of the mechanical system.
Today, shaft manufacturing is an essential part of many industries, including automotive, aerospace, and engineering. In each case, a variety of shafts are produced using a variety of techniques and materials.
Shaft machining process:
Material preparation → Turning both ends, drilling center hole →Rough turning each outer circle→ quenching →Repair grinding center hole →Semi-precision turning of the outer circle, slot, chamfering →Thread→ Keying Groove Processing Line →Milling keyway→ Repair grinding center hole→ Grinding→ test.
The process of shaft manufacturing can be Rough turning→ semi-finishing turning→ finishing turning→ grinding based on the high accuracy requirement.
Shaft parts need to pay attention to the surface roughness, mutual position accuracy, geometric accuracy, dimensional accuracy, etc...
Processing and precautions:
(1) The order of machining of shaft parts should be based on "First base surface, First coarse, then fine grinding. " The principle arrangements.
(2) After machining the center hole for the main shaft part, first process the outer circle, then process the inner hole, and pay attention to the rough and fine processing separately.
(3) the deep hole processing is typically scheduled for after quenching. Because the deformation of the quenching and tempering treatment is large, it is difficult to correct the deep hole after it is bent and deformed.
(4) When processing the outer surface of the outer circle, the large diameter outer circle should be processed first, and then the small diameter outer circle should be processed. So as not to reduce the rigidity of the workpiece at the beginning.
(5) The machining of minor surfaces such as splines, keyways, etc. on the main shaft is generally performed after the outer fine wheel or rough grinding and before the rough grinding of the outer circle.
(6) Spindle threading is performed after the partial quenching of the spindle. The concentricity of the threaded surface and the supporting journal shaft is not affected by the deformation after quenching.
Lisa Lin
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