SU1648652A1 - Attachment to gear-shaving machine - Google Patents

Abstract

This invention relates to mechanical engineering, in particular to the finishing of gear wheels. The purpose of the invention is to improve the quality of processing by increasing the kinematic accuracy of the device. In housing 1, gear 7 is mounted on shaft 2, gear 8 is intermediate gear 3, gear 6 and gear 10 are machined on VEP 4, gear 9 and shaver 12 are shaft 5 Gears 8 and 9 are made with adjustable tooth thickness. The width of the ring gear gear 7 take more than the width of the ring gear of the wheel 10. 4 Il.

Description

This invention relates to mechanical engineering, in particular to the finishing of gear wheels.

The purpose of the invention is to improve the quality of processing by increasing the kinematic accuracy of the device.

FIG. 1 schematically shows the proposed device; in fig. 2 is a kinematic diagram of the device; in fig. 3 is a fragment of the design scheme for determining the structural dimensions of the device; in fig. 4 is a fragment of a circuit for determining the structural dimensions of the device.

In the housing 1 of the device are placed on the shafts 2-5 gears 6-9, while the gear 7 is mounted on the shaft 2, the intermediate gear 8 is mounted on the shaft 3, the gears 6 and the gear wheel 10, preloaded by the underwater center 11, are placed on the shaft 4, and on the shaft 5, the gears 9 and the shaver 12 are installed. The gears 6, 7, 8, by their geometrical parameters, are assumed to be equal to the geometrical parameters of the wheel 10 being machined and made into a package with one installation. Gear 9 is made in its geometrical parameters, equal to the geometrical parameters of the tool.

Gears 8 and 9 are made with adjustable tooth thickness. The width of the ring gear gear 7 take more than the width of the ring gear of the processed wheel 10

be 05 + 2 - 3 mm,

where be is the width of the gear ring gear 8, mm,

bs is the width of the gear rim of the wheel to be machined, mm.

During operation of the device, rotation from shaft 5 through gears 9, 8, 7, 6 is transmitted to shaft 4 and drives wheel 10. Shaver 12 placed on shaft 5. is driven by machine spindles. The machine table with the housing 1 mounted on it reciprocates. For machining gears with

cl

with

about

co

KZ

different geometrical parameters and different angles of crossing their axes with the axis of the shaver between gears 6 and the machined wheel 10, gears 6 and 7 and gear 9 and shaver 12 placed device 13, allowing to adjust the axial distances Li, L2, h, As Such a device may use a set of calibrated sleeves, threaded connections, etc.

When assembling a device, its structural dimensions are defined by the following formulas:

i - h

U

sine

L2

tge

where h is the distance between shafts 2 and 4, mm;

e is the crossing angle of the axes of the shaver and the workpiece, equal to the algebraic sum of the angles of inclination of the teeth of the wheel and shaver.

In order to reduce the size of the device, it is advisable to take the distance h to a minimum

h

da6 + da

where da6 is the diameter of the top of the gear teeth 6, mm ;.

da - diameter of a circle of tops of gear teeth 7, mm.

Claims (1)

Invention Formula A device for a gear-shaping machine, in the case of which the tool spindle is placed, a mandrel, designed to accommodate machined gear, and a synchronization mechanism, including a gear pair, the gears of which are placed respectively on the tool spindle and mandrel, characterized the fact that, in order to improve the quality of processing by increasing kinematic accuracy, the device is equipped with two shafts that carry one gear each, the parameters of which correspond to the parameters gears of the synchronization mechanism mounted on the mandrel, with one shaft mounted in the housing with the possibility of contact placed gear on it with the gear mounted on the tool spindle, and through an intermediate gear mounted on another shaft with gear mounted on the mandrel, and gear, placed on the tool spindle, and the intermediate gear made with adjustable thickness of the teeth. C V ll Fm.z eleven FIG 2 7 Fyu.4