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Improved aluminum piston machining method

A processing method and piston technology, which is applied in the field of improved aluminum piston processing technology, can solve the problems of the reference conversion chain length, the difficulty in controlling the perpendicularity error between the axis of the pin hole of the aluminum piston and the axis of the skirt, and reduce the verticality effect of error

Active Publication Date: 2019-02-12
黄山市开发投资集团有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] In the commonly used aluminum piston machining process, due to the multiple reference conversion (inconsistent reference) errors in the pin hole and the skirt during the processing process, the reference conversion chain is long (compared with the finishing skirt process and the finishing top surface process) and the fine boring pin hole process), which makes it difficult to control the verticality error between the axis of the aluminum piston pin hole and the axis of the skirt

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  • Improved aluminum piston machining method
  • Improved aluminum piston machining method
  • Improved aluminum piston machining method

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Embodiment Construction

[0023] figure 1 It is a piston made of aluminum, which is an integral part composed of the head 5 and the skirt 6. There is a through hole in the middle of the piston—the pin hole 8 along the radial direction, and a ring along the outer circle 9 of the head. Slot 10. The relevant size parameters are as follows: the distance from the pin hole axis 11 to the top surface 7 of the piston blank is 62mm (the top surface is not processed), after finishing the top surface, the distance from the pin hole axis to the top surface of the piston is 60±0.03mm, the piston head The outer diameter of part 5 is φ90±0.02mm.

[0024] 1. Currently commonly used aluminum piston processing methods

[0025] In the commonly used aluminum piston machining process, the main processing standards are (see figure 1 ): seam end face 1, seam inner chamfer 2, seam inner side 3, thimble hole 4.

[0026] The perpendicularity error between the axis 11 of the aluminum piston pin hole and the axis 12 of the sk...

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Abstract

The invention discloses an improved aluminum piston machining method. The processing method comprises the following steps that (1) in the process of finishing the skirt part, the positioning surface of the roof surface is formed at the same time; (2) a top surface positioning surface 27 and a head outer circle 9 are adopted for positioning the fine boring pin hole 8, and at the moment, the perpendicularity error between the axis of the pin hole and the axis of the skirt part is determined; and (3) finally the finish of the roof surface 7 is finished, namely the machining of the aluminum pistonis finished. According to the improved machining method, the skirt part and the top surface positioning surface are machined through one-time clamping of the same positioning reference, the fine boring pin hole is positioned by the top surface positioning surface and the head outer circle, so that the benchmark conversion chain of the pin hole and the skirt part in the machining process is shortened (only related to a finish turning skirt procedure and a fine boring pin hole procedure), and the method is favorable for reducing the perpendicularity error between the axis of the pin hole and the axis of the skirt part.

Description

technical field [0001] The invention relates to the field of mechanical processing technology, in particular to an improved aluminum piston processing technology. Background technique [0002] The verticality error between the axis of the pin hole of the aluminum piston and the axis of the skirt is a relatively important and difficult to control position error in the machining of the aluminum piston. one. [0003] In the commonly used aluminum piston machining process, due to the multiple reference conversion (inconsistent reference) errors in the pin hole and the skirt during the processing process, the reference conversion chain is long (compared with the finishing skirt process and the finishing top surface process) and the fine boring pin hole process), which makes it difficult to control the perpendicularity error between the axis of the aluminum piston pin hole and the axis of the skirt. Contents of the invention [0004] The technical problem to be solved by the i...

Claims

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Application Information

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IPC IPC(8): B23P15/10
CPCB23P15/10
Inventor 黄斌徐筱波王路斌郭景斌赖泽启毕浩然冀海月刘善林
Owner 黄山市开发投资集团有限公司