CN207554736U - A kind of plastics bevel gear - Google Patents

Abstract

The utility model discloses a kind of plastics bevel gears, including fluted disc and tooth post, the fluted disc includes the flank of tooth, tooth wall and tries to get to the heart of a matter, several double wedges are circumferentially evenly equipped on institute's flank of tooth, it is surround on the tooth wall and offers film trap, the film trap is in frustum cone side shape and coaxial with the flank of tooth, the film trap circular row intercalation has several sheet metals, several sheet metals are in fan-shaped and be connected and fill up film trap, averag density is high, and heat-sinking capability enhancing increases integral strength and flank of tooth stress, service life is increased, the utility model is suitable for plastics bevel gear.

Description

A kind of plastics bevel gear

Technical field

The utility model is related to a kind of bevel gear field, more particularly to a kind of plastics bevel gear.

Background technology

Gear has many uses, and is the important part in various mechanical equipments, such as lathe, aircraft, steamer and daily life Middle wrist-watch, electric fan etc. will use various gears.There are many type of gear, there is spur gear wheel, cylindric spiral gear, spiral Gear, straight bevel gear, spiral bevel gear, worm gear etc..Wherein using more, also better simply is spur gear wheel, is also known as marked Director circle stud wheel.The parameters such as formation, modulus, pressure angle in relation to Involute gear will be introduced in related course.Here it is main The processing method for introducing spur gear wheel, there are two types of the processing methods of the form of gear tooth.One kind is forming process, is exactly utilized with being cut The method that the form cutter that gear tooth slot shape is consistent completely cuts out tooth form, such as mill teeth；Another kind is generating, it is to utilize tooth The processing method that the intermeshing of wheel cutter and driven gear moves and cuts out tooth form, as gear hobbing and gear shaping (use hobboing cutter and slotting tool It demonstrates).The method with milling machine processing gear is described below.Gear is mutually engageable machine components with teeth, it Application in machine driving and entire machinery field is extremely extensive.Modern Gear technology has reached：Module is O.004~100 Millimeter；Gear diameter is by 1 millimeter~150 meters；Power is transmitted up to upper 100,000 kilowatts；Rotating speed is up to hundreds of thousands rev/min；It is highest Peripheral speed is up to 300 meter per seconds.Application of the gear in transmission very early there have been.B.C. more than 300 years, Ancient Greece man Aristotle exists《Mechanical problem》In, the problem of just elaborating to transmit rotary motion with bronze or cast iron gear.Ancient Chinese A whole set of train has been applied in the vehicle pointing to the south of utility model.

Plastic gear is a kind of using plastics as gear made of material, and plastic gear has light and handy, at low cost and easy processing The characteristics of, plastic gear is widely used in the industries such as weaving, lathe, instrument.

If notification number is CN203272681U Chinese patents, a kind of plastic gear is disclosed, and the plastic gear includes gear Main body, the gabarit of the gear body are equipped with external tooth, and the external tooth is helical teeth, and the gear body and the external tooth are by plastics It is made, the gear body center is equipped with axis hole, and the axis hole is surrounded by several slots, the slot surrounding wrapping layer metal Piece, the utility model provide a kind of plastic gear, have wearability good, transmission performance is stablized and service life is long.Existing tooth No radiator structure is taken turns, if the heat generated during gear movement with axis friction distributes not in time, may result in gear grinding It damage aggravation and is deformed, influences its transmission stability and service life, and the patent improves this point well, but needle For the heat-sinking capability and strength stress of Tooth Surface, larger improvement is had no.

Utility model content

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of plastics bevel gear, and averag density is high, Heat-sinking capability enhances, and increases integral strength and flank of tooth stress, increases service life.

In order to achieve the above objectives, technical solution is used by the utility model solves its technical problem：A kind of plastic umbrella Gear, including fluted disc and tooth post, the fluted disc includes the flank of tooth, tooth wall and tries to get to the heart of a matter, and several double wedges, institute are circumferentially evenly equipped on institute's flank of tooth It states on tooth wall around offering film trap, in frustum cone side shape and coaxial with the flank of tooth, the film trap circular row intercalation has the film trap Several sheet metals, several sheet metals are in fan-shaped and be connected and fill up film trap.

Preferably, the tooth post and junction of trying to get to the heart of a matter are equipped with fillet rib.

Preferably, the number of the sheet metal is not more than 12, gluing is filled between adjacent two sheet metals Agent.

Due to the utilization of above-mentioned technical proposal, the utility model has following compared with prior art

Advantageous effect：

1. averag density is high, quality increase, transmission is more steady；

2. intercalation metal material layer enhances heat-sinking capability, transmission abrasion and high temperature deformation are reduced；

3. increasing integral strength and flank of tooth stress, compared to pure plastic gear, more than 30 percent use is increased Service life.

Description of the drawings

Fig. 1 is the stereogram of the present embodiment.

Fig. 2 is the front view of the present embodiment.

Fig. 3 is the vertical view of the present embodiment.

Fig. 4 is the vertical view of sheet metal in the present embodiment.

In figure：1st, fluted disc；2nd, tooth post；3rd, the flank of tooth；4th, tooth wall；5th, it tries to get to the heart of a matter；6th, double wedge；7th, film trap；8th, sheet metal；9th, fillet Rib.

Specific embodiment

With reference to specific embodiment, the content of the utility model is described in further detail：

With reference to Fig. 1, Fig. 2 and Fig. 3, the present embodiment is a kind of plastics bevel gear, and including fluted disc 1 and tooth post 2, fluted disc 1 includes It the flank of tooth 3, tooth wall 4 and tries to get to the heart of a matter 5, is circumferentially evenly equipped with several double wedges 6 on institute's flank of tooth 3, around offering film trap 7 on tooth wall 4.

With reference to Fig. 1, Fig. 3 and Fig. 4, film trap 7 is in frustum cone side shape and coaxial with the flank of tooth 3, if 7 circular row intercalation of film trap has Dry sheet metal 8, several sheet metals 8 are in fan-shaped and be connected and fill up film trap 7, and tooth post 2 and 5 junctions of trying to get to the heart of a matter are equipped with fillet reinforcement Portion 9.

In the present embodiment, the integral strength for sheet metal 8 in guarantee film trap 7, the number of sheet metal 8 are not more than 12, Filled with adhesive between two adjacent sheet metals 8, phosphor-copper or stainless steel can be selected in the material of sheet metal 8, with ensure toughness and Intensity is adapted to the working environment of plastics bevel gear.

The innovation of the present embodiment is：Averag density is high, quality increase, and transmission is more steady；Intercalation metal material layer, Enhance heat-sinking capability, reduce transmission abrasion and high temperature deformation；3 stress of integral strength and the flank of tooth is increased, compared to pure plastic gear, Increase more than 30 percent service life.

Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique Personage can understand the content of the utility model and be implemented, can not the scope of protection of the utility model be limited with this, All equivalent change or modifications substantially made according to the spirit of the present invention, should all cover in the scope of protection of the utility model It is interior.

Claims (3)

1. a kind of plastics bevel gear, it is characterised in that：Including fluted disc (1) and tooth post (2), the fluted disc (1) including the flank of tooth (3), It tooth wall (4) and tries to get to the heart of a matter (5), is circumferentially evenly equipped with several double wedges (6) on institute's flank of tooth (3), around offering film trap on the tooth wall (4) (7), the film trap (7) in frustum cone side shape and with the flank of tooth (3) coaxially, film trap (7) the circular row intercalation has several sheet metals (8), several sheet metals (8) are in fan-shaped and be connected and fill up film trap (7).

2. a kind of plastics bevel gear according to claim 1, it is characterised in that：The tooth post (2) and (5) junction of trying to get to the heart of a matter Equipped with fillet rib (9).

3. a kind of plastics bevel gear according to claim 1, it is characterised in that：The number of the sheet metal (8) is not more than 12, adhesive is filled between adjacent two sheet metals (8).