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High-engaging-degree gear set of miniature gear pump and machining method of gears

A processing method and gear pump technology, applied in the direction of pumps, pump components, rotary piston pumps, etc., can solve the problems of unreasonable gear set design and insufficient gear machining accuracy, and achieve self-priming ability, high hardness, and good finish Effect

Active Publication Date: 2015-10-14
SANMING SUOFU PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a gear set with a high meshing degree of a micro gear pump and a gear processing method, the purpose of which is to solve the problems of unreasonable design of the gear set and insufficient precision of gear processing in the existing micro gear pump

Method used

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  • High-engaging-degree gear set of miniature gear pump and machining method of gears

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specific Embodiment approach

[0024] A high meshing gear set of a micro gear pump, including two gears meshing with each other, the two gears are the driving gear 1 and the driven gear 2, both of which are involute spur gears and the parameters of the two gears Similarly, the number of teeth of each gear is 10, the modulus is 2.5, the pressure angle is 25°, the diameter of the addendum circle is 37mm, the diameter of the index circle is 30mm, and the diameter of the root circle is 26mm. is 2.1. The gears are made of PEEK material, and each gear is fixed with a ceramic shaft 3 .

[0025] A processing method for the gears in the above gear set, the steps are:

[0026] 1) Make a fixture for fixing the standard mold, the inner surface of the fixture matches the outer surface of the standard mold, and the upper surface of the fixture is a horizontal plane.

[0027] 2) First heat the outside of the fixture with a heater at 80°C for more than 30 minutes to expand the fixture, place the standard mold in the fixt...

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Abstract

The invention discloses a high-engaging-degree gear set of a miniature gear pump. The gear set comprises two engaged gears. The two gears are the driving gear and the driven gear respectively. The two gears are involute straight gears. Parameters of the two gears are the same. The tooth number of each gear is 10. The modulus of each gear is 2.5. The pressure angle of each gear is 25 degrees. The tip diameter of each gear is 37 mm. The reference diameter of each gear is 30 mm. The root diameter of each gear is 26 mm. The invention further discloses a machining method of the gears. The gear set of the miniature gear pump is improved, the machining method of the gears in the gear set is improved, the gear pump works stably, the engaging degree of the gear set is increased, oil leakage and oil trapping phenomena are reduced, and the operating life is prolonged.

Description

technical field [0001] The invention relates to a micro gear pump, in particular to a high meshing degree gear set and a gear processing method for the micro gear pump. Background technique [0002] Gear pumps are called positive displacement devices, which are widely used in industrial and agricultural production. The micro gear pump is a smaller and more precise type of gear pump. A micro gear pump consists of a set of intermeshing driving and driven gears. The driving gear and the driven gear are generally the same gear, and the structure, number of teeth, modulus and other parameters of the two directly affect the working effect and service life of the gear pump. In the existing micro gear pump, due to the unreasonable design of the gears and the lack of gear precision, the meshing degree is not good, the vibration is large, the noise is large, and even the phenomenon of oil trapping and leakage occurs; moreover, it is not suitable for Low-viscosity media (such as wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C15/00F04C2/18B29C45/14B29C33/38
Inventor 林强兴黄杰
Owner SANMING SUOFU PUMP IND CO LTD
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