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Worm helical gearing mechanism

A transmission mechanism and helical gear technology, applied in the direction of gear transmission, transmission, belt/chain/gear, etc., can solve the problems of inability to carry out surface heat treatment, difficult assembly, difficult processing of worm gear, etc., to shorten the production cycle, The effect of reducing the difficulty of assembly and reducing the difficulty of processing

Inactive Publication Date: 2011-04-20
大连机床(数控)股份有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the worm is used in conjunction with the worm gear. The worm gear in this transmission mechanism is not easy to process, requires special equipment and tools, and the processing cost is high; the assembly is difficult, and the processing of the staggered holes in the box where the worm gear is installed is difficult. Production Low efficiency; the structural shape of the worm gear determines that wear-resistant materials must be used, generally tin bronze is used, resulting in the inability to perform surface heat treatment, poor hardness and low impact resistance, and small bearing capacity

Method used

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Embodiment Construction

[0010] Such as figure 1 , 2 , Shown in 3, 4: 1 is worm screw, and 2 is the helical gear that meshes with worm screw 1, and the axle center lines of worm screw 1 and helical gear 2 are vertically arranged mutually, and worm screw 1 and helical gear 2 are involute type. The lead Pz of the worm 1, the lead angle γ of the worm 1 is equal to the helical angle β of the helical gear 2, and the normal modulus of the worm 1 is equal to the normal modulus of the helical gear 2. After ensuring the above conditions, the worm and the helical gear can mesh well to achieve the purpose of power transmission.

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Abstract

The invention discloses a worm helical gearing mechanism which comprises a worm (1) and a helical gear (2). The invention is characterized in that the worm (1) and the helical gear (2) are engaged with each other, the axial line of the worm (1) is perpendicular to the axial line of the helical gear (2), the worm (1) is an involute worm with a leading angle equal to the helix angle of the helical gear (2) and a normal modulus equal to the normal modulus of the helical gear (2). The invention has advantages of large transmission ratio, stable transmission, compact structure, small noise and self-locking. In most cases, the invention can substitute for worm wheel transmission and can be widely applied on transmission structures such as feeding cases, slide carriage cases and gearboxes of machine tools as well as feeding cases of quenching cars, which realizes motions of feeding and speed change.

Description

technical field [0001] The invention relates to a transmission mechanism, in particular to a worm helical gear transmission mechanism. Background technique [0002] At present, the worm is used in conjunction with the worm gear. The worm gear in this transmission mechanism is not easy to process, requires special equipment and tools, and the processing cost is high; it is difficult to assemble, and it is difficult to process the staggered holes of the box where the worm gear is installed. Production Low efficiency; the structural shape of the worm gear determines that wear-resistant materials must be used, generally tin bronze is used, resulting in the inability to carry out surface heat treatment, poor hardness and low impact resistance, and small bearing capacity. Contents of the invention [0003] The purpose of the present invention is to provide a worm helical gear transmission mechanism which is easy to process, low in cost, easy to assemble, can improve hardness and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/18
Inventor 徐亚明段桂俊王燕刘莹苹程蓓蓓
Owner 大连机床(数控)股份有限公司
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