Constant-pressure hard rail system utilizing gas-liquid two-phase annular flow effect

Abstract

The invention relates to a guide rail structure, in particular to a constant-pressure hard rail system utilizing the gas-liquid two-phase annular flow effect, and belongs to the technical field of guide rail structures of machine tools. The system comprises a sliding platform, a base, a gas source, a gas divider, a lubricating oil station and an oil distributor; a left guide rail and a right guide rail are arranged at the upper end of the base; the lower end surface of the sliding platform is glidingly connected onto the two guide rails of the base; lubricating grooves are formed in the end surface, facing the two guide rails, of the sliding platform; a gas inlet and a gas outlet of each of gas inlet and outlet groups on the left and right sides of the sliding platform communicate with the corresponding lubricating groove through gas channels formed in the sliding platform; and four oil inlets of an oil inlet group on the side corresponding to each gas inlet and outlet group communicate with the lubricating groove on the side through oil channels. With the system, the required gas flow under certain pressure and at certain flow is guaranteed, the gas flow and lubricating oil under certain pressure form the annular flow state, which is the state that the gas is coated with the lubricating oil, in the gas-liquid two-phases, the lubricating effect can be effectively improved, and about 50% of the lubricating oil consumption can be reduced.

Description

technical field [0001] The invention relates to a guide rail structure, in particular to a constant-pressure hard rail system utilizing the gas-liquid two-phase annular flow effect, and belongs to the technical field of machine tool guide rail structures. Background technique [0002] The guide rails used in metal cutting machine tools mainly include rolling guide rails, hard rails, plastic-coated guide rails, static pressure and unloading guide rails. Each guide rail has its own disadvantages and advantages: [0003] 1. Hard rails, hard rails refer to metal-to-metal contact and sliding friction guide rails. This kind of guide rail has a simple structure, large load capacity, and good stability, but the metal-to-metal contact lubrication effect is not good, and the friction force is large, resulting in moving speed. Slow, fast wear, prone to crawling phenomenon; [0004] 2. Rolling guide rail, this kind of guide rail structure belongs to point-surface contact, fast moving s...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above disadvantages, thereby providing a constant pressure hard rail system utilizing the gas-liquid two-phase annular flow effect, which has a simple structure, good lubrication effect, fast moving speed, and energy saving, and can effectively solve the problem of Ordinary hard rails have problems such as low working efficiency, large lubricating oil consumption, and poor durability, which reduces the cost of equipment use and can be applied to heavy-duty cutting and precision machining at the same time

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