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Static-pressure circular oil pad with sine groove oil sealing edge

A technology of sealing the oil edge and round shape, which is applied in the field of CNC machine tools, can solve the problems of large oil and other problems, and achieve the effect of increasing the flow and exchange speed of oil, increasing the rotating speed of the turntable, and improving the processing efficiency

Inactive Publication Date: 2017-04-26
BEIJING UNIV OF TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention focuses on solving the problem of excessive temperature rise of the liquid oil of the static pressure turntable working at high speed for a long time, and improves the bearing capacity of the oil pad, thereby proposing a relatively reasonable and simple structure, with sinusoidal groove sealing oil side static pressure Round oil pad to solve this technical problem

Method used

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  • Static-pressure circular oil pad with sine groove oil sealing edge
  • Static-pressure circular oil pad with sine groove oil sealing edge
  • Static-pressure circular oil pad with sine groove oil sealing edge

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] The static pressure supporting circular oil pad 1 is the main structure, and the upper end of the oil pad is a circular oil chamber 1.3 with a depth of 4mm, and the middle part of the oil chamber is an oil inlet 1.2. There is a sinusoidal return groove 1.1 in the middle of the upper surface of the oil sealing edge 1.4, and the depth of the sinusoidal groove is 1 mm, which is lower than the depth of the oil cavity. The outer diameter of the oil pad is 190mm and the inner diameter is 150mm.

[0015] Working principle: When working, 10 identical circular oil pads 1 are evenly arranged on the base 2, and the static pressure guide rail on the turntable table is directly above the oil pad to form a fit with the oil pad. The oil pump sends the hydraulic pressure from the oil inlet 1.2 to the oil chamber 1.3 through the pressure, and finally a large pressure is gener...

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Abstract

The invention discloses a static-pressure circular oil pad with a sine groove oil sealing edge. A static-pressure turntable of a heavy numerical control machine tool generally adopts a static-pressure bearing; a friction pair of the static-pressure bearing is separated by a pressure oil film; the slide resistance is only from the fluid viscosity; and the characteristics of small friction factors and long service life are achieved. But, the static-pressure bearing also exists the problem of influence on the pressure distribution and the bearing force due to excessive oil heating and viscosity reduction. In order to solve the difficulty, the invention proposes the static-pressure circular oil pad with the sine groove oil sealing edge; a sine curve return ring groove is formed in the middle surface of the oil sealing edge to increase the oil cooling area; the single heat conduction of a traditional oil pad is changed to three heat conduction in an oil tank; and meanwhile, the heat convection is increased, so that the temperature rise of oil is effectively lowered, the bearing capacity of the oil pad is guaranteed, and a static-pressure thrust bearing is efficiently and safely operated for a long time.

Description

technical field [0001] The invention relates to a static pressure circular oil pad with a sinusoidal groove sealing oil edge, which belongs to the technical field of numerical control machine tools. Background technique [0002] With the rapid development of my country's aerospace, shipbuilding, energy and other industries, as well as the accelerated advancement of the "One Belt, One Road" national strategy, my country's equipment manufacturing industry has maintained rapid growth and is shifting towards high-end. As the carrier of advanced manufacturing technology and the basic production means of the equipment industry, machine tools are the basic equipment of the equipment manufacturing industry. The demand for high-end heavy-duty machine tools, which are the country's most important tools, is even more urgent. As a key component of heavy-duty machine tools, hydrostatic turntable oil pads directly affect the overall machining efficiency, machining accuracy and service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06
CPCF16C32/0659
Inventor 刘志峰赵代红王语莫浑连明
Owner BEIJING UNIV OF TECH
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