A Gas Monitoring and Air Float Positioning Seat Seat and Piston Processing Method Suitable for Piston Processing

Abstract

The invention discloses a gas monitoring and air floating positioning spigot seat suitable for piston machining and a piston machining method. The gas monitoring and air floatation positioning spigotseat comprises axial positioning air passages 13 and radial positioning air passages 14; at least three axial positioning air passages 13 are uniformly distributed on the spigot seat by taking the axis of the spigot seat 5 as a symmetry center; the inlet ends of the axial positioning air passages 13 are arranged on the surface of a non-working outer cylinder of the spigot seat 5, and the outlet ends of the axial positioning air passages 13 are formed in the axial positioning surface 10 of the spigot seat 5; at least three radial positioning air passages 14 are uniformly distributed on the spigot seat by taking the axis of the spigot seat 5 as a symmetry center; and the inlet ends of the radial positioning air passages 14 are arranged on the surface of the non-working outer cylinder of thespigot seat, and the outlet ends of the radial positioning air passages are formed in a radial positioning surface 9 of the spigot seat. According to the gas monitoring and air floating positioning spigot seat, the axial air passages and a radial positioning air passages are arranged on the spigot seat correspondingly, and compressed gas is introduced, so that accurate axial positioning and radialpositioning of the piston to be machined on the spigot seat can be realized.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a gas monitoring and air flotation positioning seam seat and a piston processing method suitable for piston processing. Background technique [0002] During the mechanical processing of engine pistons, cylindrical spigots are generally used for positioning. The principle of positioning and clamping is as follows: figure 1 shown. [0003] In the actual processing process, on the one hand, there are often debris such as chips between the end face of the piston spigot and the axial positioning surface of the spigot seat, which is difficult to be found in time, resulting in excessive positioning errors of the piston and unqualified machining accuracy; on the other hand Because there is a fit gap between the inner surface of the piston spigot and the radial positioning surface of the spigot seat, the size and orientation of this fit gap cannot be controlled, resultin...

AI Technical Summary

Problems solved by technology

[0003] In the actual processing process, on the one hand, there are often debris such as chips between the end face of the piston spigot and the axial positioning surface of the spigot seat, which is difficult to be found in time, resulting in excessive positioning errors of the piston and unqualified machining accuracy; on the other hand Because there is a fit gap between the inner surface of the piston spigot and the radial positioning surface of the spigot seat, the size and orientation of this fit gap cannot be controlled, resulting in a certain gap between the processes positioned on the inner surface of the piston spigot Repeated positioning error, for example: the process of finishing the piston ring groove is positioned by the inner surface of the piston spigot and the end face of the spigot, while the process of finishing the outer circle of the piston is also positioned by the inner surface of the piston spigot and the end face of the spigot. Repeated positioning error, this error will inevitably increase the radial runout error of the bottom of the piston ring groove relative to the outer axis of the piston

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