Breaking type split connecting rod used for compressor and manufacturing method thereof

Abstract

The invention discloses a breaking type split connecting rod used for a compressor and a manufacturing method thereof and the manufacturing method comprises the following steps of: 1. using a die for manufacturing an integral connecting rod, wherein the two ends of the integral connecting rod are respectively a connecting rod big end and a connecting rod small end, and the middle part of the integral connecting rod is connected into an integration by a connecting bar; 2. arranging a V-shaped breaking groove and a positioning mounting groove on the connecting bar of the integral connecting rod; and 3. exerting external force at the two ends of the integral connecting rod for pulling, leading the integral connecting rod to naturally split at the V-shaped breaking groove and forming independent and separate connecting rod bid end and connecting rod small end, wherein the connecting rod big end forms a V-shaped positioning groove when in breaking, and the connecting rod small end forms a V-shaped positioning bulge when in breaking. By adopting the split connecting rod, a connecting rod mounting demising notch is not needed to be arranged on the cylinder opening of a crank case when the compressor is installed, thus avoiding deformation caused thereby, not only improving the stability of performance of the compressor, but also being capable of reducing the manufacture cost of the split connecting rod.

Description

technical field [0001] The invention relates to a connecting rod applied to a refrigeration compressor and a manufacturing method thereof. Background technique [0002] The existing hermetic refrigeration compressor generally adopts a reciprocating crankshaft-connecting rod mechanism, such as figure 1 As shown, it includes crankshaft 1, connecting rod 2, crankcase 3, piston 4 and piston pin 5. Piston 4 is installed in the cylinder bore of crankcase 3 and connected with connecting rod 2 through piston pin 5. When the compressor is running, the crankshaft 1 rotates, and the connecting rod 2 drives the piston 4 to reciprocate. Since the connecting rod 2 generally adopts an integral structure, in order to ensure the smooth progress of the assembly, a connecting rod installation relief gap 6 needs to be designed on the cylinder bore of the crankcase 3 . In this way, it not only increases the processing cost, but also easily causes the deformation of the cylinder bore, which lea...

AI Technical Summary

Problems solved by technology

However, the structure of the split connecting rod also has disadvantages: the large connecting rod 7 and the small connecting rod 8 need to be formed on different molds, and the manufacturing cost is relatively high; at the same time, in order to ensure that the large connecting rod and the small connecting rod Parallelism, V-shaped positioning protrusion 11 and V-shaped positioning groove 10 require high manufacturing precision, high difficulty and high cost

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