CN204805483U - Internal gear that has metallic interlayer - Google Patents

Abstract

The utility model provides an internal gear that has metallic interlayer, technology is complicated during for solution prior art processing gear, process time is long, the processing degree of difficulty is big, technical defect such as processing cost height, the utility model provides a gear, especially, relate to be formed by stacking and the gear fill the clearance with the metal level of thin sheet part of taking the tooth that quenches the multi -disc, web gear shape part is the gear -type's that quenches the foil who takes the tooth, multi -disc web gear shape part superposes into the gear mass each other, with spot welding fixed connection between each web gear shape part, there is the metal level on between the thin sheet part and the surface of gear mass, reach the low cost, make the technological mesh of high physical properties gear fast.

Description

A kind of internal gear having metal sandwich

Technical field

The utility model relates to a kind of internal gear having metal sandwich, particularly relates to that a kind of toothed sheet parts quenched by multi-disc is formed by stacking and fills the internal gear in gap with metal layer.

Background technique

Gear refers to, and wheel rim has tooth can engage the mechanical component transmitting motion and power continuously, the initial gear transmission of China was brought into use from the period of Three Kingdoms, started there is gear-driven record at B.C. 300 years abroad, therefore, gear transmission at mechanical field from ancient times with regard to extensive use.

Common gear can be divided into cross section to be circular gear, the non-circular special shape gear of tooth bar and cross section from outward appearance.

Conventional gear working method is generally divided into form copying and generating cutting, such as: gear hobbing machine gear hobbing process, milling machine Gear Milling, slotting machine Gear Shaping, cold forging machine forge the methods such as tooth processing, the processing of gear generator gear-shaping, the processing of accurate casting tooth, the processing of gear grinding machine roll flute, the processing of die casting machine casting tooth, gear shaving machine processing.

Such as: produce common straight toothed spur gear for form copyings such as gear hobbing machine gear hobbing process, milling machine Gear Milling, slotting machine Gear Shaping, the processing of gear generator gear-shaping, the processing of gear grinding machine roll flute, gear shaving machine processing, processing technology must have: → tempering that blanking → material forges (eliminate material fracture and pore) (reduce and cut difficulty) → outer garden profile and interior garden profile cut → line → calibration profiling Gear shape process → keyway processing → quenching → flank of tooth honing fine finishing → inspection → warehouse-in is carried out to each tooth.

Such as: forge the common straight toothed spur gear of tooth processing for cold forging machine, processing technology must have: (technique is loaded down with trivial details, slightly to forge Mould Machining.) → heating materials → forge processing → gear surface roughing → heat treatment → gear surface fine finishing → inspection → warehouse-in; Each mould can only produce the gear of a model.

Such as: for the common straight toothed spur gear of lost wax casting method precision casting tooth processing, processing technology must have: (technique is loaded down with trivial details, slightly for the processing of metal wax-pattern.) → wax-pattern is shaped, and (technique is loaded down with trivial details, slightly.) → sand mo(u)ld shaping → sand mo(u)ld dewaxing → metal melt → cast → the demoulding → sand removal → gear surface fine finishing → inspection → warehouse-in; Cast gear is generally not suitable for heat treatment process, and therefore, the strength of gear of production is little, generally can not heat treatment further, and each mould can only produce the gear of a model.

Such as: the common straight toothed spur gear of metallic dust die casting machine casting tooth processing is example, and processing technology must have: (technique is loaded down with trivial details, slightly for Mould Machining.) → metallic dust die casting machine casting tooth → gear surface fine finishing → inspection → warehouse-in; Cast gear is generally not suitable for heat treatment process, and therefore, the strength of gear of production is little, generally can not heat treatment further, and each mould can only produce the gear of a model.

In order to ensure physical accuracy and the mechanical strength of gear, no matter adopt above arbitrary processing method, all have that actual processing technology complexity, long processing time, difficulty of processing are large, processing cost high-technology defect, these technological deficiencies are more outstanding when production large gear.

Summary of the invention

The technical problem that the utility model solves is: complex process during in order to solve prior art machining interal, long processing time, difficulty of processing are large, processing cost high-technology defect, a kind of internal gear is provided, particularly relate to that a kind of toothed sheet parts quenched by multi-disc is formed by stacking and with the internal gear in metal layer filling gap, reach the technical purpose of low cost, the fast high physical property internal gear of manufacture.

The technological scheme of the utility model technical solution problem is:

In order to reach technical purpose of the present utility model, a kind of internal gear having metal sandwich that the utility model provides, comprises internal tooth wheel body, it is characterized in that: internal tooth wheel body is formed by stacking mutually by multi-disc thin slice internal gear parts;

Described thin slice internal gear parts is the thin slice circular pieces that the inside of metal is distributed with the quenching of tooth;

Multi-disc thin slice internal gear parts is superimposed to design thickness mutually;

Described multi-disc thin slice internal gear parts superposition, forms internal tooth wheel body, connects, soldering point at least two between multi-disc thin slice internal gear parts with spot welding;

There is metal layer between each thin slice internal gear parts of internal tooth wheel body and the surface of internal tooth wheel body;

Metal layer is selected from following any one: lead layer, tin layers, layers of copper, aluminium lamination.

Compare with current internal gear, the Advantageous Effects that the utility model patent obtains is: by first being quenched by web gear shape part, then overall immersion metallic solution after formative gear, the single individuality of part is little, be convenient to quenching technical, be convenient to produce heavy parts, compared with prior art overall gear quenching technical, reduce the volume of hardening furnace, especially the large gear that thickness is large, during prior art quenching, warm-up time is very long just can make whole gear heat to the temperature required for quenching, therefore, web gear shape part carries out the technique of quenching, shorten warm-up time, be convenient to control of product quality, reduce the difficulty of quenching technical, between sheet parts and the surface of gear mass is all flexible metallic material, after stressed extruding, flexible metal can be extruded from the flank of tooth or simply remove, be convenient to control product design precision, do not affect tooth face hardness and flank of tooth physical parameter, add and adopt vacuum processing technology man-hour, vacuum state can discharge the gas in metallic solution, rapid pressure and fast decompression process hocket, metallic solution produces motion in gear mass, in accelerating gear body, air is discharged, make in gear mass finer and close, improve gear mass mechanical property, the utility model patent simplified processing process, shorten process time, reduce difficulty of processing, reach low cost, the technical purpose of the high physical property gear of quick manufacture, complex process when solving prior art machining gears, long processing time, difficulty of processing is large, processing cost high-technology defect, and produce the more outstanding above-mentioned technological deficiency of large gear, practicability is large.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1: be the utility model thin slice circular pieces schematic diagram.

Fig. 2: be the utility model schematic diagram.

1. internal tooth wheel body, 2. welding positions in figure, 1-20. thin slice internal gear parts.

Embodiment

Below in conjunction with specific embodiment, the utility model is described further, but the protection domain required by the utility model is not limited to the scope described by specific embodiment.

Example 1: as shown in Figure 1 to Figure 2, disclosed a kind of internal gear having metal sandwich, comprises internal tooth wheel body 1, it is characterized in that: internal tooth wheel body 1 is formed by stacking mutually by multi-disc thin slice internal gear parts 1-20;

Described thin slice internal gear parts 1-20 is the thin slice circular pieces that the inside of metal is distributed with the quenching of tooth;

Multi-disc thin slice internal gear parts 1-20 is superimposed to design thickness mutually;

Described multi-disc thin slice internal gear parts 1-20 superposes, and forms internal tooth wheel body 1, connects, soldering point at least two between multi-disc thin slice internal gear parts 1-20 with spot welding;

There is metal layer between each thin slice internal gear parts 1-20 of internal tooth the wheel body 1 and surface of internal tooth wheel body 1;

Metal layer is selected from following any one: lead layer, tin layers, layers of copper, aluminium lamination.

The process step of gear is as follows:

Step 1): sheet metal is machined into toothed thin slice internal gear parts 1-20;

Step 2): Quenching Treatment is carried out to the thin slice internal gear parts 1-20 after shaping;

Step 3): the mould then multi-disc thin slice internal gear parts 1-20 being entered gear shape carries out stacking splicing, at mould bottom placing sheets internal gear parts 1-20, form orlop thin slice internal gear parts 1-20, then on orlop thin slice internal gear parts 1-20, last layer thin slice internal gear parts 1-20 is placed, then connect between orlop thin slice internal gear parts 1-20 and last layer thin slice internal gear parts 1-20 with spot welding, then on above-mentioned last layer thin slice internal gear parts 1-20, thin slice internal gear parts 1-20 is put again, connect between the thin slice internal gear parts 1-20 of the superiors with the thin slice internal gear parts 1-20 of relative lower one deck with spot welding again, cyclic process reaches internal gear design thickness, form internal tooth wheel body 1,

Step 4): carry out the inspection of semifinished product to described internal tooth wheel body 1, qualified internal tooth wheel body 1 enters next step, and defective internal tooth wheel body 1 is checked after entering the mould squeezing shaping of internal tooth wheel shape again, enters next step after qualified;

Step 5): then by the surperficial prefluxing of above-mentioned internal tooth wheel body 1;

Step 6): the internal tooth wheel body 1 then surface being coated with fluxing agent immerses metallic solution, and metallic solution is: plumbous liquid, tin liquor, copper liquid, copper alloy liquid, terne metal liquid or other soft aluminium alloys;

Step 7): then internal tooth wheel body 1 is taken out from metallic solution, carry out process for cooling;

Step 8): then carry out Checking of finished products by above-mentioned through cooled internal gear, qualified finished product internal gear warehouse-in, defective internal gear is checked after carrying out the process of gear outer contour surface again, the finished product internal gear warehouse-in after qualified.

Add man-hour above-mentioned, in vacuum box, completing internal tooth wheel body 1, to immerse the effect of metallic solution technique better;

In vacuum box, internal tooth wheel body 1 immerses metallic solution technique, close vacuum pump, open suction valve fast, make air inlet fast in vacuum box, by the time when vacuum box internal pressure and normal-pressure balance, cut out suction valve reopens vacuum pump and carries out negative-pressure ward, above-mentioned rapid pressure and fast decompression process hocket once, and metallic solution produces motion in internal tooth wheel body 1, accelerate air in internal tooth wheel body 1 and discharge, make in internal tooth wheel body 1 finer and close, improve the mechanical property of internal gear.

Below by reference to the accompanying drawings mode of execution of the present utility model is explained in detail; but the utility model is not limited thereto; in the ken that person of ordinary skill in the field possesses; can also make a variety of changes under the prerequisite not departing from the utility model aim; person of ordinary skill in the field is from above-mentioned design; without performing creative labour, done all conversion, all drop within protection domain of the present utility model.

Claims (1)

1. there is an internal gear for metal sandwich, comprise internal tooth wheel body (1), it is characterized in that: internal tooth wheel body (1) is formed by stacking mutually by multi-disc thin slice internal gear parts (1-20);

Described thin slice internal gear parts (1-20) is the thin slice circular pieces that the inside of metal is distributed with the quenching of tooth;

Multi-disc thin slice internal gear parts (1-20) is superimposed to design thickness mutually;

Described multi-disc thin slice internal gear parts (1-20) superposition, forms internal tooth wheel body (1), connects, soldering point at least two between multi-disc thin slice internal gear parts (1-20) with spot welding;

There is metal layer between each thin slice internal gear parts (1-20) of internal tooth wheel body (1) and the surface of internal tooth wheel body (1);

Metal layer is selected from following any one: lead layer, tin layers, layers of copper, aluminium lamination.