A bearing pressing machine

Abstract

The invention relates to the technical field of intelligent machines and discloses a pressing fit machine for a bearing. The pressing fit machine comprises a hydraulic cylinder, wherein a casing pipesleeves the hydraulic cylinder; a locating block is mounted on the inner wall of the casing pipe; one side surface of the locating block is fixedly connected with a telescopic cylinder which is filledwith mercury; one end of the telescopic cylinder is fixedly connected with a pushing plate; the casing pipe is communicated with a water-injecting pipe; and a water-absorbing cotton is mounted at thetail end of the water-injecting pipe. Heat is transferred to the mercury through the hydraulic cylinder, so that the mercury is heated to expand to squeeze out a coolant liquid in the water-absorbingcotton; meanwhile, the squeezed-out coolant liquid flows down gradually through a spreader plate to lower the surface temperature of the hydraulic cylinder during the flowing process, so that the hydraulic cylinder starts to cool from the outside in and is always kept in good working condition; and therefore, hydraulic oil is always maintained at an appropriate temperature during use to retard the oxidation of the hydraulic oil, and the interior of the hydraulic cylinder is always maintained at a cleanliness degree which allows the hydraulic cylinder to move, thus increasing the service lifeof the hydraulic cylinder.

Description

technical field [0001] The invention relates to the technical field of intelligent equipment, in particular to a bearing pressing machine. Background technique [0002] Bearing press machine is a multi-functional small hydraulic machine tool, with U-shaped grooves on the table, which is convenient for the placement of shafts and the pressing of shaft parts. Actions such as shapes. [0003] The working principle of the existing bearing press machine is as follows: Figure 4 As shown, put the bearing on the processing table, then start the hydraulic cylinder to drive the hydraulic cylinder to move down, and press the bearing into the end cover. When the hydraulic cylinder is in use, it needs to continuously inject hydraulic oil. When the hydraulic oil is injected, through When throttling the gap, pressure loss will occur, causing the local oil temperature of the hydraulic oil inside the hydraulic cylinder to rise, causing the oil to oxidize and deteriorate, producing a large ...

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Problems solved by technology

[0003] The working principle of the existing bearing press machine is as follows: Figure 4 As shown, put the bearing on the processing table, then start the hydraulic cylinder to drive the hydraulic cylinder to move down, and press the bearing into the end cover. When the hydraulic cylinder is in use, it needs to continuously inject hydraulic oil. When the hydraulic oil is injected, through When throttling the gap, pressure loss will occur, causing the local oil temperature of the hydraulic oil inside the hydraulic cylinder to rise, causing the oil to oxidize and deteriorate, producing a large amount of carbon residue, asphalt and other sundries, and some impurities are adsorbed on the inner wall of the hydraulic cylinder, blocking The movement of the piston causes the resistance of the hydraulic cylinder to increase when the hydraulic cylinder moves. On the one hand, the friction between the piston and the hydraulic cylinder is aggravated, causing the piston to be gradually worn, and the worn residue continues to be adsorbed on the pipe wall, further aggravating the friction between the piston and the hydraulic cylinder. At the same time, impurities flow with the hydraulic oil and are transmitted to the cylinder, resulting in a large amount of impurities in the oil, and the hydraulic oil at both ends flows together, resulting in the inability of the hydraulic cylinder to move and affecting the use of the hydraulic cylinder. On the other hand, it increases The load on the hydraulic cylinder reduces the life of the hydraulic cylinder, and at the same time another part is adsorbed on the pipe wall of the orifice, resulting in a decrease in the flow area of ​​the hydraulic oil, resulting in a slowdown in the speed of the hydraulic cylinder actuator, and the inability to quickly press the bearing. And as time goes by, the impurities will gradually block the throttle port, which will cause a cut-off, which will further affect the use of the hydraulic cylinder. Once the impurities or dirt are washed away, it will also cause a sudden jump

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