How to use CNC lathe to process engine piston?

Recently, one of Shanghai ANTISHICNC Company’s end customers needed to purchase a CNC lathe for processing automobile engine pistons. The piston diameter is 100mm, the height is 80mm, and the piston pin hole diameter is between 15mm and 30mm.

CNC lathes can process the outer circle, ring groove and other parts of the piston. The piston is subjected to high temperature, high pressure and high-speed friction in the engine, so the processing accuracy and surface quality requirements are high. The customer provided photos of the workpiece to be processed, as shown in the figure:

According to customer needs, ANTISHICNC engineers successfully matched a CNC lathe for the customer – TCK36A/300 model, with a maximum disc processing diameter of 360mm. The maximum bar processing length is 300mm, and the processing accuracy can reach T6 level. The following are the basic parameters of TCK36A:

Specifications	Unit	TCK36A
Max. Swing over Bed	mm	Φ360
Max. Swing over slide	mm	Φ140
Max. disc machining diameter	mm	Φ360
Max. turning length (with row cutter)	mm	280
Spindle through hole diameter	mm	Φ48
X-direction travel	mm	170
Z-direction travel	mm	350
Total mains power	KW	9

Shanghai ANTISHICNC engineers will introduce you to the detailed processing process:

1.Rough turning: A rough turning operation is performed to remove excess material and create a basic cylindrical shape.

2.Precision turning: Precision turning operations are performed to obtain the required size (100*80 mm) and surface finish.

(1)End face: Create a flat surface at the end of the bearing.

(2)Boring: Enlarging a hole or creating an internal cylindrical surface.

(3)Grooving: Cut grooves for retaining rings or seals.

(4)Finishing operation: Apply finishing cutting to achieve final surface finish and dimensional accuracy.

3.Quality control and inspection

(1)Dimensional inspection: Use precision instruments (such as micrometers, calipers) to measure key dimensions.

(2)Surface finish inspection: Check the surface roughness to ensure it meets specifications.

(3)Hardness test: If the bearing material has requirements, perform a hardness test to ensure that it meets the mechanical performance specifications.

For more technical details and CNC lathe knowledge, please contact Shanghai ANTS Machine Equipment Co., Ltd. We provide customers with timely technical support, training and high-quality lathes.

Keywords: CNC lathe, CNC slant bed lathe, CNC lathe processing engine piston