A High Precision Quantitative Adjustment Screw
An adjustment screw and high-precision technology, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problem of adjustment step size, quantitative adjustment screw adjustment step size, and adjustment accuracy that cannot meet the needs of regulators and engine adjustments and other problems, to achieve high-precision quantitative adjustment, reduce the adjustment step size, and solve the effect of adjusting the step size
Active Publication Date: 2019-10-11
GUIZHOU HONGLIN MACHINERY
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Problems solved by technology
Due to the relatively large adjustment step length of the ordinary quantitative adjustment screw, the adjustment accuracy cannot meet the adjustment and use requirements of the regulator and the engine
[0004] To sum up, due to the relatively large adjustment step size of ordinary quantitative adjustment screws, the adjustment accuracy cannot meet the technical problems of the adjustment and use requirements of the regulator and the engine.
Method used
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Embodiment 2
[0032] The adjusting screw 2 of the present invention will be described in detail below by taking a high-pressure air reducer used in an aero-engine as an example.
[0033] In the regulator of a certain type of aero-engine control system, the high-precision quantitative adjustment screw 2 proposed by the present invention is used in the adjustment part of the high-pressure air pressure reducer used for oil-air ratio adjustment.
[0034] The structure of the assembly of the adjustment screw 2 in the high-pressure air reducer is as follows: figure 1 As shown, since the working medium of the high-pressure air reducer is 700°C, 4MPa high-temperature and high-pressure air, its gasket 33 is sealed with metal copper.
[0035] The structure of the housing 1 hole where the adjustment screw 2 is installed in the high-pressure air reducer is as follows: figure 2 As shown, wherein, the thread specification Ma for installing the adjusting screw 2 in the housing 1 is M10×1, the thread spe...
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The invention discloses a high-precision quantitative adjusting screw which comprises a housing; a ball groove is formed in the housing; an odd number (n) of arc slots are formed in the ball groove, and n is greater than or equal to 7; a threaded hole is formed in the part, on one sides of the arc slots, of the housing; the threaded hole is engaged and connected with an adjusting screw part through threads; a hole is formed in one end of the adjusting screw part; balls are arranged on the two sides of the hole; a spring is arranged between the balls on the two sides; a sealing gasket is arranged at one end of the adjusting screw part; and a blocking cap is arranged on one side of the sealing gasket. The high-precision quantitative adjusting screw is subjected to design improvement on the base of a common quantitative adjusting screw, so that multiple equal partition on the adjusting amount of a circle of 14, 18 and the like can be realized, and the adjusting step length can be reducedobviously; the problem that the adjusting step length of the common quantitative adjusting screw is large is solved; a machining technology is simple; and compared with an original adjusting screw provided with 8 or other even numbers of slots, high-precision quantitative adjustment can be carried out on an adjustor simply, rapidly and accurately, and the high-precision quantitative adjusting screw is good in operability.
Description
technical field [0001] The invention relates to an adjusting screw, in particular to an adjusting part suitable for an aeroengine control system regulator, especially suitable for the high pressure adjustment or fuel adjustment part that requires quantitative adjustment and requires high adjustment accuracy. Precision quantitative adjustment screw. Background technique [0002] At present, the adjustment screw commonly used in the regulator of the aero-engine control system usually indirectly adjusts the axial displacement of the screw by rotating the angle of the adjustment screw, and finally adjusts the adjusted physical quantity to the desired state. The adjusting screw described in the present invention is applied to a regulator of an aero-engine control system, and can perform high-precision quantitative adjustment to working media such as high-pressure air or fuel oil, so as to realize the high-precision quantitative adjustment requirements of the engine for the contro...
Claims
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IPC IPC(8): F16K1/02F16K1/54F16K1/38F02C7/057F02C7/22
Inventor 孔文圆张弛王飞任璇
Owner GUIZHOU HONGLIN MACHINERY