DD220679A1 - GEARBOX DRIVE ACCORDING TO THE BUILDING BOX PRINCIPLE - Google Patents

Abstract

The invention relates to the determination of the flank direction for the bevel pinion, bevel, Schraegstirnradwellen and Schraegstirnraeder in the form that the flank direction change takes place when due to the increment the respective center distance occurs only in this flank direction. The aim of the invention is a minimal range of parts for a series of transmissions. The invention is generally applicable to Getriebebaureihen of single and multi-stage spur and bevel gear drives.

Description

Title of the invention

Gear transmission according to the modular principle

Field of application of the invention

The invention relates to gears according to the modular principle

- whose center distances and bevel gauges are determined according to the values of the basic series

- Designed with a suitable choice of the ratio of center distance to bevel gear and constant increment of Achsab states v / earth

- The gears are preferably provided with circular arc, spiral or helical teeth, whereby axial forces arise from the teeth

- The plank direction must be chosen so that minimal resulting axial forces arise in the mating to multi-stage gearboxes on the intermediate shafts with pinion and wheel

The invention is generally applicable to transmission series of single and multi-stage helical and bevel gear transmissions *,

Without making any changes to the modular system of the gear unit series, each bevel pinion and bevel gear, each helical gear shaft and each helical gear only comes in one plank direction.

Characteristic of Td identified solutions ·

On the one hand, the development in the field of toothed-wheel gearboxes leads to ~ special gearboxes on the other hand to series of gearboxes that are offered in catalogs or standards. The production of gearbox series requires a specific range of gear wheels ·

The bevel gears and spur gears were used in. the previous? / eise designed so that. the Plänkenrichtung the drive shafts "left" is. This is due to the fact that in certain bevel gear teeth, the flank direction "right" of the pinion unfavorable Maschinenver-. results. There are gear ranges, whose increments of the center distances of multi-stage gearbox do not kon-! are constant. As a result, when axle spacings in the modular principle for helical bevel gears ... and helical gears return, both flank directions were required. In the patent 88 430 this is also the case. On a gradation of the gear and arrangement of the gears; is not discussed in DB-OS 1 925 '909. By suitable choice of the flank direction · with multi-stage gearboxes on intermediate shafts, it is achieved that the axial forces arising from the toothing largely compensate each other.This results in favorable load conditions for the rolling bearings a large part "be present in both flank directions. ! ^

Object of the invention ^x . ·. ^

The object of the invention is the arrangement and execution of bevel gears and spur gears in gear drives according to the modular principle, the. "·: ....

aw · "X μ

- with a minimum range of parts for a .Getriebebaureihe basis

- have bevel gear shafts and bevel gears, helical bevel gear shafts and helical spur gears in just one plank direction within the entire series *

Explanation of the essence of the invention

The object of the invention is to arrange bevel gears and spur gears in gearboxes according to the modular principle, - that without "changes to the modular system of the transmission components with few parts many gearbox variants are manufactured. ,

According to the invention it is necessary that the modular system 'with suitable eter. Selection of the ratio of axial distance to bevel gear nominal dimension and the increment of the axial distances within a gearbox · The choice of the sizes, named after the end axis distance, is preferably based on geometrical basic series. According to the invention the plank direction of the bevel pinion, bevel gears, and Schrägstirnradwellen 'helical gears is set so that each Teil.entweder only in the Plank direction "left" or in the direction Plank "Right ¹ · erforderlieh is.". , .. '. - 'The plank direction is set in multi-stage transmissions on intermediate shafts so that compensate for the resulting from the teeth Asialkräfte largely. This results in favorable load conditions for the. Roller bearings. . ,

- 4

Embodiment. ; , /

Die.Erfindung will be explained in more detail by an Ausführungsbeispiei. , , '. , · ·

The accompanying table shows a variant for the selection of the flank direction of a gear unit according to the modular principle. , , ^: , ·, "." The grading of the entire gear unit series was selected according to the basic series R 20 (column 1).

All center distances are possible as single-stage helical gearboxes * ... , , : ' , - '.' - '. '. ·. , As increment between two consecutive axis distances y- * i, k was determined *

The axial distances for spur gear units (two-, three- and four-stage) are assigned in columns 3, 4 and 5 · 'All nominal dimensions can be selected as bevel gear diameters *. For the ratio of center distance (a ..) to bevel gear nominal. (d _O p)

was set to ' iP * = - - = 0.9 . -. . '

The assignment of the bevel gear nominal dimensions, and Ξίηζelachsabstände for bevel gear and spur gear (two-, three- and four-stage) is carried out in columns 7, 8 and 9 *:. \

From column 10, the determination of the flank direction for the Stirnra ^l stepped in column 11 for bevel pinion, and, bevel gear. ".. ·:.

Claims (1)

Erfindungsanspräche 1. gear transmission according to the modular principle with circular arc, helical or helical toothing, with a suitable choice of the ratio of center distance to Kegelradnennmaß and the increment of the axial distances, ge k e η η ζ eich ή et by determining the plank directions of each bevel pinion, bevel gear, each _{Schrägstirnrad-:} wave, each helical gear for use in various gearbox sizes either · Plank device; "left" or the plank direction "right", is assigned. , 2 · Gear unit according to item 1, by _: e e n e ζ e ζ that the design of the helical gear shafts and crankshafts, bearings and housings is carried out in such a way that the use of each bevel pinion, bevel gear, of each helical bevel gear shaft _{r is possible for} every type of helical gear in gearboxes of different sizes ^{Ss? Is} ' 2ci.chnur.3rn. -6 -