CN107542893A - New rack - Google Patents

Abstract

The invention discloses a kind of new rack, including rack body（3）, in rack body（3）The upper setting gear teeth（1）, in rack body（3）Interior setting race ring（2）, in the gear teeth（1）Surface is provided with specific coatings（4）.The beneficial effects of the invention are as follows：Each composition and ratio of rack provided by the invention are moderate, the heat resistance and thermal diffusivity of rack are substantially increased, so as to ensure rack normal operation, extends the service life of rack, and the rack of the present invention does not contain rare elemental nickel, molybdenum and manganese, manufacturing cost is low, meanwhile, the composition species of gear is less, so that manufacturing process is more easy, and then manufacturing cost is reduced, the setting of specific coatings can increase the service life of the gear teeth, increase operating efficiency.

Description

New rack

Technical field

The present invention relates to mechanical field, more particularly, to a kind of new rack.

Background technology

Rack is the special gear that a kind of tooth is distributed on bar shape.Rack also divides spur rack and diagonal-cut rack, respectively Used with straight spur gear and helical gears pairing；The flank profil of rack non-involute for straight line（For the flank of tooth then For plane）, it is infinitely great roller gear equivalent to reference radius.In rack work, broken teeth, deformation, lubrication easily occurs Effect is bad, quick abrasion, vibrations are big and these big problems of noise.

The content of the invention

The present invention provides a kind of new rack for this, including rack body, in rack to solve present problems The gear teeth are set on body, race ring is set in rack body, specific coatings are provided with tooth surface.Preferably, the spy Different coating is special material, has high intensity, high heat-resisting, high stickiness, preferably, the composition of the gear teeth and rack body includes Carbon that mass percent is 0.8~1%, 1.5~2% copper, surplus are iron and other elements.

The beneficial effects of the invention are as follows：

The present invention is reasonable in design, simple in construction.Each composition and ratio of rack provided by the invention are moderate, substantially increase rack Heat resistance and thermal diffusivity, so as to ensure rack normal operation, extend the service life of rack, and the rack of the present invention is free of There are rare elemental nickel, molybdenum and manganese, manufacturing cost is low, meanwhile, the composition species of gear is less so that and manufacturing process is more easy, And then manufacturing cost is reduced, the setting of specific coatings can increase the service life of the gear teeth, increase operating efficiency.

Brief description of the drawings

Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：

Fig. 1 is the front view of the present invention.

Embodiment

All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.

Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics .

As shown in Fig. 1 a kind of new rack, including rack body, the gear teeth are set on rack body, in tooth Race ring is set in bar body, specific coatings are provided with tooth surface.Preferably, the specific coatings are special material, tool Have high intensity, high heat-resisting, high stickiness, preferably, the composition of the gear teeth and rack body include mass percent be 0.8~ 1% carbon, 1.5~2% copper, surplus are iron and other elements.

The beneficial effects of the invention are as follows：

The present invention is reasonable in design, simple in construction.Each composition and ratio of rack provided by the invention are moderate, substantially increase rack Heat resistance and thermal diffusivity, so as to ensure rack normal operation, extend the service life of rack, and the rack of the present invention is free of There are rare elemental nickel, molybdenum and manganese, manufacturing cost is low, meanwhile, the composition species of gear is less so that and manufacturing process is more easy, And then manufacturing cost is reduced, the setting of specific coatings can increase the service life of the gear teeth, increase operating efficiency.

The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (3)

1. A kind of 1. new rack, including rack body（3）, in rack body（3）The upper setting gear teeth（1）, in rack body （3）Interior setting race ring（2）, in the gear teeth（1）Surface is provided with specific coatings（4）.
2. 2. a kind of new rack according to claim 1, it is characterized in that：The specific coatings（4）For special material, have High intensity, high heat-resisting, high stickiness.
3. 3. a kind of new rack according to claim 1, it is characterized in that：The gear teeth（1）With gear bar body（4）Composition The carbon for being 0.8~1% including mass percent, 1.5~2% copper, surplus are iron and other elements.