CN204828553U - Metallic interlayer's spur gear - Google Patents

Abstract

The utility model provides a metallic interlayer's spur gear, especially, relate to the spur gear who has the metal level between the thin sheet part that a web gear shape part of taking the tooth that is quenched the multi -disc was formed by stacking, 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, web gear shape part is the foil who takes the tooth who has the gear -type of the quenching of a connecting hole at least, multi -disc web gear shape part superposes into the gear mass each other, with connecting piece fixed connection between the connecting hole of gear mass, 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 straight toothed spur gear of metal sandwich

Technical field

The utility model patent relates to a kind of straight toothed spur gear of metal sandwich, particularly relates to the straight toothed spur gear having metal layer between sheet parts that a kind of toothed web gear shape part quenched by multi-disc is formed by stacking.

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 or special shape gear.

Summary of the invention

The technical problem that the utility model patent solves is: complex process during in order to solve prior art processing straight toothed spur gear, long processing time, difficulty of processing are large, processing cost high-technology defect, a kind of straight toothed spur gear is provided, particularly relate to the straight toothed spur gear having metal layer between sheet parts that a kind of toothed web gear shape part quenched by multi-disc is formed by stacking, reach low cost, manufacture the technical purpose of high physical property straight toothed spur gear fast.

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

In order to reach the technical purpose of the utility model patent, the straight toothed spur gear of a kind of metal sandwich that the utility model patent provides, comprises straight toothed spur gear body, it is characterized in that: straight toothed spur gear body is formed by stacking mutually by multi-disc sheet parts;

Described sheet parts is the toothed thin slice circular pieces of quenching;

Described sheet parts has an attachment hole at least;

There is a hole at the center of described sheet parts;

There is a square groove at the edge in the hole of described sheet parts;

Described square groove is the shape in 1/2 flat key cross section;

Multi-disc sheet parts is superimposed to design thickness mutually;

Attachment hole after the superposition of multi-disc sheet parts is overlapped into through hole;

Straight toothed spur gear body is fixedly connected into link between attachment hole;

Hole after the superposition of multi-disc sheet parts is overlapped into axis hole;

Square groove after the superposition of multi-disc sheet parts is overlapped into keyway;

There is metal layer between each sheet parts of straight toothed spur gear body and the surface of straight toothed spur gear body;

It is that rivet interlacement or screw and nut connect that link is fixedly connected with;

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

With current gear ratio comparatively, 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 or special shape 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 thin slice circular pieces arrangement schematic diagram.

Fig. 3: be the utility model schematic diagram.

1. sheet parts in figure, 1-2. thin slice circular pieces, 2. attachment hole, 4. link, 5. straight toothed spur gear body, 5-3. straight toothed spur gear.

Embodiment

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

Example 1: as shown in Figure 1 to Figure 3, the straight toothed spur gear of disclosed a kind of metal sandwich, comprises straight toothed spur gear body 5, it is characterized in that: straight toothed spur gear body 5 is formed by stacking mutually by multi-disc sheet parts 1;

Described sheet parts 1 is the toothed thin slice circular pieces 1-2 of quenching;

Described sheet parts 1 has an attachment hole 2 at least;

There is a hole at the center of described sheet parts 1;

There is a square groove at the edge in the hole of described sheet parts 1;

Described square groove is the shape in 1/2 flat key cross section;

Multi-disc sheet parts 1 is superimposed to design thickness mutually;

Attachment hole 2 after multi-disc sheet parts 1 superposes is overlapped into through hole;

Straight toothed spur gear body 5 is fixedly connected into link between attachment hole 2;

Hole after multi-disc sheet parts 1 superposes is overlapped into axis hole;

Square groove after multi-disc sheet parts 1 superposes is overlapped into keyway;

There is metal layer between each sheet parts 1 of straight toothed spur gear the body 5 and surface of straight toothed spur gear body 5;

It is that rivet interlacement or screw and nut connect that link 4 is fixedly connected with;

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 circular pieces 1-2; Described thin slice circular pieces 1-2 has an attachment hole 2 at least;

Step 2): Quenching Treatment is carried out to the thin slice circular pieces 1-2 after shaping;

Step 3): the mould then multi-disc thin slice circular pieces 1-2 being entered straight toothed spur gear shape carries out stacking splicing, forms straight toothed spur gear moulding, and the attachment hole 2 after multi-disc thin slice circular pieces 1-2 superposes is overlapped into through hole;

Step 4): being then fixed connection by inserting link 4 between the attachment hole of the straight toothed spur gear after above-mentioned moulding, forming straight toothed spur gear body 5;

Step 5): the inspection of semifinished product is carried out to described straight toothed spur gear body 5, qualified straight toothed spur gear body 5 enters next step, defective straight toothed spur gear body 5 is checked after entering the mould squeezing shaping of straight toothed spur gear shape again, enters next step after qualified;

Step 6): then by the surperficial prefluxing of above-mentioned straight toothed spur gear body 5;

Step 7): the straight toothed spur gear body 5 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 8): then straight toothed spur gear body 5 is taken out from metallic solution, carry out process for cooling;

Step 9): then carry out Checking of finished products by above-mentioned through cooled straight toothed spur gear 5-3, qualified finished product straight toothed spur gear 5-3 puts in storage, defective straight toothed spur gear 5-3 checks after carrying out the process of gear outer contour surface again, and the finished product straight toothed spur gear 5-3 after qualified puts in storage.

Add man-hour above-mentioned, in vacuum box, completing straight toothed spur gear body 5, to immerse the effect of metallic solution technique better;

In vacuum box, straight toothed spur gear body 5 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, metallic solution produces motion in straight toothed spur gear body 5, accelerate air in straight toothed spur gear body 5 to discharge, make in straight toothed spur gear body 5 finer and close, improve straight toothed spur gear body 5 mechanical property.

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. a straight toothed spur gear for metal sandwich, comprises straight toothed spur gear body (5), it is characterized in that: straight toothed spur gear body (5) is formed by stacking mutually by multi-disc sheet parts (1);

Described sheet parts (1) is the toothed thin slice circular pieces (1-2) of quenching;

Described sheet parts (1) has an attachment hole (2) at least;

There is a hole at the center of described sheet parts (1);

There is a square groove at the edge in the hole of described sheet parts (1);

Described square groove is the shape in 1/2 flat key cross section;

Multi-disc sheet parts (1) is superimposed to design thickness mutually;

Attachment hole (2) after multi-disc sheet parts (1) superposition is overlapped into through hole;

Straight toothed spur gear body (5) is fixedly connected into link between attachment hole (2);

Hole after multi-disc sheet parts (1) superposition is overlapped into axis hole;

Square groove after multi-disc sheet parts (1) superposition is overlapped into keyway;

There is metal layer between each sheet parts (1) of straight toothed spur gear body (5) and the surface of straight toothed spur gear body (5);

It is that rivet interlacement or screw and nut connect that link (4) is fixedly connected with;

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