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Gear pair of stable non-pulse gear pump and machining technology of gear pair die cavity

A technology without pulses and gear pairs, which is applied to pumps, pump components, rotary piston pumps, etc., to achieve the effects of increasing life, stabilizing the medium, and improving stability

Pending Publication Date: 2020-05-19
彭延平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a gear pair applied to a smooth and pulseless gear pump and a processing technology for the mold cavity of the gear pair. Its purpose is to solve the problem of optimizing the gear parameters of the existing gear pump. Solved the problem of gear mass production and processing stability

Method used

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  • Gear pair of stable non-pulse gear pump and machining technology of gear pair die cavity
  • Gear pair of stable non-pulse gear pump and machining technology of gear pair die cavity
  • Gear pair of stable non-pulse gear pump and machining technology of gear pair die cavity

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Embodiment

[0023] See attached figure 1 As shown, the gear pair of a smooth pulse-free gear pump in this embodiment is an involute spur gear pair, including a driving gear 1 and a driven gear 3 meshing with each other, and the driving gear 1 is provided with a main drive shaft 2 , The driven gear 3 is provided with a slave drive shaft 4 . Among them: the parameters of driving gear 1 and driven gear 3 are the same, and the design parameters are as follows:

[0024] The number of teeth is 10-18, the normal phase modulus is 1-20mn, the normal pressure angle is 20°, the addendum height coefficient is 0.8, the dedendum height coefficient is 1.26, the meshing angle is 29.531°, and the tooth shape coincidence degree is 1.024.

[0025] In this embodiment, the driving gear with 10 teeth is taken as an example, and its basic parameters are as follows:

[0026] Speed(r / min) 1000 Number of teeth z 10 Normal modulus mn 1 Addendum height factor ha* 0.8 Dedend height...

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Abstract

The invention discloses a gear pair of a stable non-pulse gear pump and a machining technology of a gear pair die cavity. The gear pair is applied to a high-precision precise micro gear pump and comprises a drive gear and a driven gear which are engaged. The drive gear and the driven gear have the following parameters that the tooth number ranges from 10 to 18, the normal modulus ranges from 1 mnto 20 mn, the normal pressure angle is 20 degrees, the tooth top height coefficient is 0.8, the tooth root height coefficient is 1.26, the engagement angle is 29.531, and the tooth profile coincidencedegree is 1.024. Due to the fact that gear molded line parameters are further optimized, the gear coincidence degree is high after optimization, the friction coefficient is reduced, the service lifeof the gears is prolonged, and the gear pump has the beneficial effects that media conveyed out are stable, free of pulses and high in continuity; and a novel surface treatment technology is adopted for manufacturing a gear cavity, the manufacturing precision, density and saturation of the gears are improved, the gear torque is improved, friction force is reduced when the gears are engaged, meanwhile, stability and production efficiency of the product are improved, and the service life of a die is greatly prolonged.

Description

technical field [0001] The invention relates to a gear pair and the processing technology of the mold cavity for producing the gear pair. The gear pair is used in a smooth pulse-free gear pump, and the tooth shape design of the gear pair is mainly used in a high-precision pulse-free gear pump. . Background technique [0002] Gear pumps are widely used in the aerospace field, providing power for the cooling system of various aerospace vehicles, the fuel system of the engine, and the exhaust gas treatment injection device of the automobile. These devices transport fluids with low viscosity and high pressure, and are extremely sensitive to pulses generated during the transport process. A smooth and pulse-free gear pump is the best solution to solve the above devices. [0003] At present, the production process of gear pumps on the market usually adopts metal gear processing, plastic machining, and ordinary injection molding processing, but they all have their own shortcomings....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/14F04C15/00B29C33/38
CPCB29C33/3842F04C2/084F04C2/14F04C15/00F04C15/0049F04C2230/91F04C2230/92F04C2240/20F04C2240/60F05C2203/0895F05C2225/12
Inventor 彭延平
Owner 彭延平
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