SU973283A1 - Gear cutter and method of of its use for restoring gears - Google Patents

Description

The invention relates to mechanical engineering and can be used in the restoration of the ends of the teeth of gear wheels.

Known dolb for processing gears.

There is a known method of restoring gear wheels, which includes filling the worn part with material, subsequent orientation of the tool along the unworn surfaces of the gear wheel and preliminary and final machining, the preliminary processing being done with the removal of chips, and the final plastic deformation. In this method, metal is deposited on a worn area of the ring gear. A preliminary mechanical treatment is carried out on a connecting rod-crank press with a cutting edge with a cutting edge, a hollow between the teeth along the contour, and the final surface treatment of the teeth is carried out by cold plastic deformation with rolling rolls 2.

A disadvantage of the known hammer when used to restore gear wheels is the complexity

orientation relative to the gear before machining, which leads to a decrease in the accuracy and performance of the restoration.

The disadvantage of this method is that low recovery accuracy is achieved, as before machining.

10 detail with additional material applied in places of wear, it is necessary to install precisely with respect to the cutter-punch, and this means that it is impossible to obtain an even allowance for

15 subsequent processing by plastic deformation. In addition, a large allowance is removed and considerable recessing forces occur that can cause vein deformations 20. tsa ;, chips and breaks in the material of the areas being machined, difficulties in the manufacture of tools occur. The allowance for subsequent processing by plastic deformation is sufficient.

Claims (2)

25 but is great, and with plastic 1 deformation, sagging and enveloping of the material on the surface of the teeth are formed, which requires additional finishing, for example, chewing. The aim of the invention is to improve the accuracy and productivity of recovery. The goal is achieved by the fact that the gearbox for machining gears is equipped with deforming elements that are coaxially cutting teeth of the blade and are separated by an annular groove, the diameter of which is less than the diameter of the depressions and the cutting teeth of the hole, and the height is greater than the height worn parts of gears. The orientation of the tool is performed by the interaction of its deforming elements with a gear wheel, and the orientation and mechanical processing are carried out under rolling conditions. Figure 1 shows a design variant of the tool for the case of machining a block gear having wear from the inside of the rim in Figure 2 is a design variant of the tool for the case of machining a gear scaffold having wear from the outer side of the crown. The deforming elements 1 execute There are 2 grooves with cutting teeth. The number of deforming elements is equal to the number of cutting teeth. An annular groove is made between the deformed elements and the cutting teeth 2 of the die 3, the height of which is N more than the height S of the worn part of the gear wheel, 4, is filled with the material 5 surfacing. . After applying the material 5, the gear 4 is machined on the shaping machines using the rolling method. The gear 4 is mounted on the table of the gear-shaping machine. The deformations of the element 1 are inserted into the unhindered engagement with the unaffected part of the gear 4, and the ring a of the groove H is located against the restored portion of the gear. The drive is turned on, rotating the gear shaping machine. In the process of rolling in the deforming elements 1 and the fea 4 gear, a gap is selected in their engagement and orientation is carried out. The gear 4 is fixed. Dolby K is set to the start position of the splinter and preliminary mechanical processing is performed. As the groove penetrates the gear wheel 4, the deforming elements 1 also engage with the gear wheel, and the gearing takes place along the non-worn surfaces of the teeth. The deforming elements 1, which perform the functions of a copier when gearing up, slide along the gear teeth. This provides higher accuracy. After termination of the gear-shaping process, a final processing is performed - plastic deformation. In this case, the deforming elements 1 are engaged in engagement with the gear 1 wheel, and the cutting teeth of the groove are disengaged. As a result of the application of the invention, the degree of accuracy of the restoration of the gear wheels is increased and the productivity of the restoration is increased. Claim 1. A batt for machining gears, characterized in that, in order to improve the accuracy and performance in restoring gear wheels, it is provided with deformed elements, which are located coaxially with the cutting tooth and are separated by an annular groove, the diameter of which is smaller than the diameter of the cavities of the deforming elements and the cutting teeth of the bit, and the height is greater than the height of the worn part of the gear. 2. A method of using a chisel to restore gear wheels, including filling the worn-out part with material, subsequent orientation of the tool along the uneven surfaces of the gear wheel, and preliminary and final machining, and the preliminary processing is done with chip removal. deforming, characterized in that, in order to increase the accuracy and productivity of the restoration, the orientation of the tool is performed by the interaction of its deforming el gearwheels, with orientation and mechanical processing performed under rolling conditions. one .. . . ; Sources of information taken into account in the examination 1. Production of gears. Ed. B.A. Taits. M., Mashgiz, 1963, p. 157. 2. Authors. Certificate of the USSR 568529, cl. B 23 R 7/00, 1975. five