CN2566056Y

CN2566056Y - High efficient gearing worm

Info

Publication number: CN2566056Y
Application number: CN 02276172
Authority: CN
Inventors: 申曙光; 杨登荣; 王建军
Original assignee: Guizhou Qunjian Gear Co ltd
Current assignee: Guizhou Qunjian Gear Co ltd
Priority date: 2002-08-16
Filing date: 2002-08-16
Publication date: 2003-08-13
Anticipated expiration: 2012-08-16

Abstract

The utility model discloses a high efficient driving worm. The surface of the thread tooth part of a one-head worm or multiple-head worm (1) is provided with a layer of nitrogen ionic layer (2), and the graduated circle pressure angle alpha of the one-head worm or multiple-head worm (1) increases one DEG to two DEG on the basis of the standard pressure angle. The utility model has the advantages of smaller frictional resistance and higher rotational efficiency. Tests prove that the transmission efficiency can enhance about 10 percent, because the utility model increases one DEG to two DEG on the basis of the standard graduated circle pressure angle. Because the worm surface is provided with one layer of nitrogen ionic layer, the friction resistance is reduced, and the transmission efficiency can enhance about 5 percent.

Description

Efficient transmission worm screw

Technical field:

The utility model relates to a kind of efficient transmission worm screw, belongs to worm screw mechanical parts technical field.

Background technique:

At present, worm screw of the prior art generally all is to adopt the size of pressure angle of graduated circle in the worm gear pair standard of GB defined to make, and nitriding treatment is not made on the surface of worm screw, this worm screw of pressing the standard technology making, its shortcoming is: the skin friction resistance of worm screw is higher, its transmission efficiency is the end of than, so existing worm screw in use, and its transmission effect still is not ideal enough.

Summary of the invention:

The purpose of this utility model is: provide the efficient transmission worm screw that a kind of surface friction drag is less, rotational efficienty is higher, to overcome the deficiencies in the prior art.

The utility model is to constitute like this: it comprises single head or multi-start worm (1), thread portion surface at single head or multi-start worm (1) is provided with one deck nitrogen sheath (2), and the pressure angle of graduated circle α of single head or multi-start worm (1) increases by 1 °～2 ° on the basis at standard pressure angle; The pressure angle of graduated circle α that is single head or multi-start worm (1) can be respectively: 14 ° 30 '+1 °～2 °, 20 °+1 °～2 °, 22 ° 30 '+1 °～2 °, 28 ° 30 '+1 °～2 °.

Owing to adopted technique scheme, the utility model is compared with existing worm screw, the utlity model has that surface friction drag is less, the rotational efficienty advantage of higher.Through evidence, because the utility model has increased by 1 °～2 ° on the basis of standard pressure angle of graduated circle, make worm screw when transmission, can reduce the transmission resistance, its transmission efficiency can improve about 10%; And owing to be provided with one deck nitrogen sheath on the worm screw surface, greatly reduce the surface friction drag of worm screw, improve its transmission efficiency, through evidence, behind the increase nitrogen sheath, the transmission efficiency of worm screw can improve about 5%.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

Embodiment:

Embodiment of the present utility model: the material of making single head or multi-start worm (1) can be identical with Manufacturing material of the prior art, during making, can be earlier that worm blank is modified by existing preparation process, carry out thick finish turning then, then according to using needs to produce the single head or the multi-start worm (1) of moulding, when carrying out worm screw moulding making, the pressure angle of graduated circle α of single head or multi-start worm (1) is made as on the basis at standard pressure angle increases by 1 °～2 °, and the pressure angle of graduated circle α that is about to single head or multi-start worm (1) is made as respectively: 14 ° 30 '+1 °～2 °, 20 °+1 °～2 °, 22 ° 30 '+1 °～2 °, 28 ° 30 '+1 °～2 °; And then the single head of moulding or the tooth portion of multi-start worm (1) are carried out high frequency hardening by the tratitional technology requirement, single head behind the high frequency hardening or multi-start worm (1) are carried out nitriding treatment, make the thread portion surface of single head or multi-start worm (1) have one deck nitrogen sheath (2), adopt traditional flank of tooth glossing with the thread portion surface finish of single head or multi-start worm (1) at last.

Claims

1, a kind of efficient transmission worm screw, it comprises single head or multi-start worm (1), it is characterized in that: the thread portion surface at single head or multi-start worm (1) is provided with one deck nitrogen sheath (2), and the pressure angle of graduated circle α of single head or multi-start worm (1) increases by 1 °～2 ° on the basis at standard pressure angle.

2, efficient transmission worm screw according to claim 1, it is characterized in that: the pressure angle of graduated circle α of single head or multi-start worm (1) can be respectively: 14 ° 30 '+1 °～2 °, 20 °+1 °～2 °, 22 ° 30 '+1 °～2 °, 28 ° 30 '+1 °～2 °.