KR20030051670A - Method for providing assemblies with gearings and profiles - Google Patents

Abstract

The invention relates to a method of forming a gearing (7) and / or a profile (5) on an axis (3). The method is characterized by manufacturing the gearing 7 and / or the profile 5 on the shaft 3 mounted to the assembly 1.

Description

METHOD FOR PROVIDING ASSEMBLIES WITH GEARINGS AND PROFILES}

Methods and assemblies of the type mentioned herein are known. Consideration is given to the use of shafts with gearing and / or profiles already provided and prepared. The shaft is then mounted in a direct assembly, in particular an electric motor and a gearbox. This requires a certain logistics cost in production, and once manufactured, the motor can only be mounted for the designated area of application along each machined axis. These axes also often become expensive, especially when the quantity produced is small. In order to take advantage of the scale effect of mass suppliers, an attempt was made to supply inexpensive, mass-produced axes. To this end, it can be seen that some logistics costs are incurred, especially if the location of the mass supplier is located far away. This method therefore makes sense only when a large amount of parts is provided. Inexpensive assemblies, in particular electric motors, may be considered to disassemble, mount correspondingly prepared shafts, and then reassemble them. The problem here is that mass-produced assemblies are often undesirable in their suitability for disassembly and subsequent assembly. Thus, the upgrade cost can easily exceed the original assembly price, which means a high total cost. To further reduce this total cost, the molded article and / or profile are press-fitted or heated inserted into the axis of the assembly as separate parts. This, of course, leads to an increase in weight, an enlargement of the structure space, and an undesirable tolerance that can cause eccentricity.

The present invention relates to a method of forming and machining a gearing and profile according to the preamble of claim 1 and an assembly according to the preamble of claim 54.

The invention is explained in more detail by the following figures.

1 shows a part of an assembly 1 comprising a shaft 3.

It is therefore an object of the present invention to provide a method and assembly of the type mentioned at the outset which avoids these disadvantages.

In order to achieve the above object, a method with the features mentioned in claim 1 is proposed. The method is characterized by shaping the gearing and / or profile on an assembly, in particular on a shaft mounted to the motor and / or gearbox. Shaft bearings can be used in the assembly to secure the shaft in the molding process. That is, the profile and / or gearing of the maximum precision can be shape | molded to an axis | shaft. It also makes it possible to provide the shaft with smaller dimensions and smaller weight profiles and / or gearing at a lower total cost.

Particularly advantageous is an embodiment of the method in which the profile and / or gearing is molded into a typical assembly, especially for mass production. Thus, where the demand for concentric precision is high, a particularly low total cost can be realized when the structural space of the molded profile and / or gearing is small.

Other advantages are presented from the remaining dependent claims.

In order to achieve the object underlying the present invention, there is also proposed an assembly, in particular an electric motor or a gearbox, with the features mentioned in claim 54. The assembly features an axis provided with a profile and / or gearing when mounted. This makes it possible to achieve very good concentricity in the profile and / or gearing when the structure space is small. In addition, high transmission ratios and good efficiency can be achieved through this. In addition, the manufacture of the assembly can be made very inexpensively.

The shaft 3 comprises a conical shaped profile 5 and a double threaded gearing 7. This corresponds to an extreme helical gear. The gearing 7 cuts all the surface lines of the shaft 3 at the same angle, ie the gear angle. The axis 3 extends in the housing 9 shown here only partially. The profile 5 and gearing 7 are provided on the shaft 3 in the mounted state.

The gearing 7 can in particular be driven by or driven by the cogwheel, in which the helical gear is engaged with another cogwheel formed.

The assembly 1 may be a gearbox or a motor, in particular a commercially available high speed electric motor.

Hereinafter, a method of forming a gear and a profile on the shaft will be described. Reference is made to the drawings for this purpose.

The gearing 7 and / or the profile 5 are molded directly on the shaft 3 mounted to the assembly 1.

For this purpose the assembly 1, in particular the motor and / or gearbox, can be fixed. As long as the shaft 3 protrudes far enough from the assembly 1, the shaft 3 may be directly fixed. The gearing 7 and / or the profile 5 are then molded into the shaft 3 which is fixed directly or indirectly by way of deformation and / or electrochemical machining and / or cutting methods. Deformation processes in particular include drilling, pressing, rolling, grinding, flat grinding, milling, flat milling, laser machining, gear forming, hob peeling, roll honing, gear shaving, gear hobbing, Bevel gear cutting, rolling grinding, profile slotting, profile grinding, eccentric grinding, end milling, high speed milling, end grinding, broaching, water spray cutting, water spray milling, sliding Slide drawing, die forming, longitudinal rolling by pressing roller, skew rolling by pressing roller, transverse rolling by rolling rod, transverse rolling by external roller / end wheel, internal gear Transverse rolling by internal geared end jaw, thread rolling, oblique rolling by disc roll, roller jaw rolling (known as external rolling), electrocorrosion, electrochemical erosion crimping , Electrochemical Erosion, Electrochemical Removal, Chemical Removal, Fine Electrochemical Processing (PEM), Etching, Laser Beam Removal, Laser Beam Cutting, Whirling Method, Torsion Broaching and / or Rotary Swaging (as Molded Swaging) Known).

Particularly preferred is an embodiment of the method in which the gearing 7 is molded into a helical gear having a particularly large gear angle via helical gear, rotary swaging and / or roller jaw rolling and / or end milling and / or high speed milling.

In a particularly advantageous embodiment of the method in which the forming process takes place via rollers, the shaft 3 can be driven through a suitable device and / or rollers mounted therefor. The profile 5 molded on the shaft 3 here consists of a conical region and the gearing 7 consists of double screws.

After the forming process, which may consist of one or more steps, the fixing is released again. For fixing the shaft 3, it is also conceivable to fix the shaft 3 in the motor and / or gearbox. In this case it is sufficient to fix the motor 3 and thus indirectly the shaft 3.

In addition, in the case of a special molding process, only the motor and / or the gearbox are fixed so that the shaft 3 can be rotatably supported. In an embodiment of this method the shaft 3 can be pivoted during the forming process. In this case, inaccuracies present in the axis 3, in particular functional inaccuracies, can be corrected. Such shaped profiles and gearings are particularly well suited for gearboxes which must meet the high requirement requirements associated with high efficiency and low noise generation.

The assembly 1 may also be provided in a stationary device for shaping the profile 5 and / or the gearing 7. For this purpose the part to be deformed of the shaft 3 embedded in the assembly 1 passes through the device and / or is inserted into the device in a suitable manner, through which the forming process is carried out.

Particularly good embodiments of the method in which the assembly 1 can be conventional, in particular mass-produced parts. The mass-produced assembly 1 can preferably be manufactured. Decomposition can often not be done at all or is only difficult to perform. Through the application of the method, the gearing 7 and the profile 5 of maximum precision can be molded to the axis of the assembly 1 without complicated disassembly and thus assembly. The gearing 7 and profile 5 can be used in any application area as the output shaft or drive shaft of the assembly 1. It is particularly preferred that the shaft 3 in which the gearing 7 is shaped is used to function as the output shaft of the motor and at the same time as the drive shaft for the gearbox installed in the motor.

The method can be applied at the time of manufacture where the same assembly 1 comprising differently starred shafts 3 is required. Preferably, the deformation forms required on the basis of the different axes 3 are produced just before the assembly 1 is built up, which saves on logistics costs.

It may also be considered to provide only the gearing 7 without the profile 5 on the shaft 3.

It is also possible to mold a single or several screws instead of double screws.

Finally, a gearing 7 extending in the axial direction, ie parallel to the surface line of the axis 3, can also be molded.

Claims (54)

In the method of shaping the gearing (7) and / or the profile (5) on the shaft (3), Forming a gearing (7) and / or a profile (5) on a shaft (3) mounted to the assembly (1). 2. Method according to claim 1, characterized in that the assembly (1) and / or shaft (3) is fixed before the forming process. The method according to claim 1 or 2, wherein the fixing is released after the molding process. The method according to any one of the preceding claims, characterized in that the forming is carried out via deformation and / or electrochemical machining and / or cutting methods. Method according to one of the preceding claims, characterized in that the gearing (7) is molded into a helical gear, in particular a helical gear having a large gear angle. The method according to any one of the preceding claims, wherein the forming is through a punching process. The method according to any one of the preceding claims, wherein the molding is performed by pressing. The method according to any one of the preceding claims, wherein the forming is through rolling. The method according to any one of the preceding claims, wherein the forming is performed by grinding. The method according to any one of the preceding claims, wherein the forming is performed through flat grinding. The method according to any one of the preceding claims, wherein the forming is through milling. The method according to any one of the preceding claims, wherein the forming is through flat milling. The method according to any one of the preceding claims, wherein the molding is via laser processing. The method according to any one of the preceding claims, wherein the forming is performed via a gear forming method. The method according to any one of the preceding claims, wherein the forming process is via hob peeling. The method according to any one of the preceding claims, wherein the forming is through rolling honing. The method according to any one of the preceding claims, wherein the shaping is through gear shaving. The method according to any one of the preceding claims, wherein the forming is via gear hobbing. The method according to any one of the preceding claims, wherein the forming is via bevel gear cutting. The method according to any one of the preceding claims, wherein the forming is performed by rolling grinding. The method according to any one of the preceding claims, wherein the forming is through profile slotting. The method according to any one of the preceding claims, wherein the forming process is through profile grinding. The method according to any one of the preceding claims, wherein the forming process is through eccentric grinding. The method according to any one of the preceding claims, wherein the forming is via end milling. The method according to any one of the preceding claims, wherein the forming process is via high speed milling. The method according to any one of the preceding claims, wherein the forming process is through end grinding. The method according to any one of the preceding claims, wherein the forming is via broaching. The method according to any one of the preceding claims, wherein the forming process is performed through water spray cutting. The method according to any one of the preceding claims, wherein the forming process is through water spray milling. The method according to any one of the preceding claims, wherein the forming process is via slide drawing. The method according to any one of the preceding claims, wherein the forming is through die molding. The method according to any one of the preceding claims, characterized in that the forming process is via longitudinal rolling by a compression roller. The method according to any one of the preceding claims, characterized in that the forming is carried out via oblique rolling by a compression roller. The method according to any one of the preceding claims, characterized in that the forming is carried out via lateral rolling with a rolling rod. The method according to any one of the preceding claims, characterized in that the forming is carried out via lateral rolling by an external roller / end wheel. The method according to any one of the preceding claims, wherein the forming is performed by transverse rolling by internal gear forming end jaws. The method according to any one of the preceding claims, wherein the forming is through thread rolling. The method according to any one of the preceding claims, characterized in that the forming is carried out via oblique rolling by a disc roll. The method according to any one of the preceding claims, wherein the forming is performed through roller rough rolling. The method according to any one of the preceding claims, wherein the forming process is through electrocorrosion. The method according to any one of the preceding claims, wherein the forming is via electrochemical erosion crimping. The method according to any one of the preceding claims, wherein the forming process is via electrochemical erosion. The method according to any one of the preceding claims, wherein the forming process is performed by electrochemical removal. The method according to any one of the preceding claims, characterized in that the forming process is via chemical removal. The method of any one of the preceding claims, wherein the forming process is via fine electrochemical machining (PEM). The method according to any one of the preceding claims, wherein the forming is via etching. The method according to any one of the preceding claims, wherein the shaping is performed by laser beam removal. The method according to any one of the preceding claims, wherein the forming is via laser cutting. The method according to any one of the preceding claims, wherein the forming is performed by a vortex method. The method according to any one of the preceding claims, wherein the forming is via torsion broaching. The method according to any one of the preceding claims, wherein the forming is via rotary swaging. The method according to any one of the preceding claims, characterized in that the shaft (3) is fixed before the molding process and again unfixed after the molding process. Method according to any of the preceding claims, characterized in that the assembly (1) is a conventional electric motor and / or gearbox, in particular a mass-produced part. Especially in the mounted state, in particular an electric motor or gearbox, characterized in that it comprises a shaft comprising a profile 5 and / or a gearing 7 provided via the method according to claim 1. Assembly.