Engine of indium-plated oil groove inlet piston

Abstract

The invention relates to an engine of an indium-plated oil groove inlet piston. A plurality of noise reduction wedges are arranged on a piston surface, and an outer layer noise reduction wedge (29), amiddle layer noise reduction wedge (30) and an inner layer noise reduction wedge (31) are arranged on an outer circle of the piston surface sequentially in three circles from outside to the positionnear the circle center; through holes (32) are formed in the plurality of noise reduction wedges; and the interior of each wedge is hollow. When noise airflow in the process of pressure charging and explosion discharging is punched in or extruded from the through holes (32) formed in the big-end-down trapezoid normal sections (33) of the noise reduction wedges and oval inlets (34), the noise reduction effect of consuming noise airflow energy through compression and expansion of the multiple noise reduction wedges and reexpansion after recompression of the multiple noise reduction wedges is achieved. An electrode is manufactured on tungsten copper through a CNC machine tool based on a waveform parameter equation at first, and then a waveform is machined on the piston by using an electric spark machining machine tool. An oil-containing groove is further arranged in a piston pin hole where the piston pin end is placed, and the oil-containing groove is the groove formed through inlet waveform extension in the axial direction of the hole, and is further modified to be an indium-plated oil groove to be beneficial lubrication with a piston pin.

Description

technical field [0001] The invention relates to an automatic clamping and positioning mechanism and method for installing two G-shaped elastic pads at the piston pin end of a small engine and an engine with an indium-plated oil tank inlet piston, which belongs to the technical field of internal combustion engine pistons and crank connecting rods. Background technique [0002] The assembly of piston and crank connecting rod has great potential to be tapped. At present, the automatic clamping and positioning mechanism and method of installing two G-type elastic pads at the piston pin end of the small engine are still being explored. The assembly of the piston and the crank connecting rod cannot be done by installing two G-type elastic pads at the piston pin end of the small engine. To; install G-shaped elastic pads at the piston pin end of small engines, basically based on manual production mode, the operator first manually installs the piston and the crank connecting rod thro...

AI Technical Summary

Problems solved by technology

For the assembly of piston and crank connecting rod, it is impossible to install two G-shaped elastic pads at the piston pin end of small engines at the same time; it is basically manual production mode to install G-shaped elastic pads at the piston pin end of small engines, and the operator installs them manually first. The piston and the crank connecting rod are connected together through the piston pin, the first G-shaped elastic pad to be stuck in the piston sink at the left end of the piston pin, and then manually install the piston with the crank connecting rod connected through the piston pin The second G-shaped elastic pad at the right end of the pin is to be stuck in the piston sink groove; because the G-shaped elastic pad is elastic, it has a variable outer diameter; the diameter of the piston pin is 8mm, and the major diameter of the piston sink is 10mm, that is to say, the G-shaped elastic pad with a large diameter of 10mm should be compressed to 8mm with pliers and pushed into the piston sinker to restore the G-shaped elastic pad to a large diameter of 10mm; after installing the left end of the piston pin The first G-shaped elastic pad in the piston sinking groove must be installed with the second G-shaped elastic pad in the piston sinking groove at the right end of the piston pin; not only the labor intensity of the workers is high, the production efficiency is low, but also often due to the operation force The G-type elastic pad is deformed due to too large, or the G-type elastic pad is not installed properly because the operating force is too small and too crooked; with the increase of labor cost and the emergence of labor shortage, it is possible to realize the simultaneous It is imminent to install the automatic production of two G-type elastic pads, but it is unbearable for the enterprise to engage in expensive fully automated high-precision equipment; the assembly of elastic pads for pistons and crank connecting rods is a kind of in small engines. The method of installing two G-type elastic pads at the piston pin end at the same time solves the long-standing problem that it is impossible to install two G-type elastic pads at the same time

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