SU1653912A1 - A method for machining flat surfaces - Google Patents

Abstract

The invention relates to machining and can be used for machining the mating surfaces of parts. The purpose of the invention is to obtain surfaces of mating parts such as wedge mounting elements of dies,:: / ensuring reliable connection of the latter. The processing of the flat surfaces of the mating parts is carried out by rotating the Mill and moving the latter relative to the surface to be machined. To securely connect the mating surfaces on them, microroughnesses are formed, the direction of which must be at an angle to the direction of movement of the wedge. For this, the cutting elements are positioned in a plane at an angle to the direction of the relative movement of the milling cutter and the part. In this case, the velocity vector does not match the feed vector. When machining the mating parts, the direction of rotation and movement of the milling cutter and the part is selected from the conditions for obtaining the direction on one of the parts mirroring with respect to the direction to the other. 1 з п. Ф-лы, 5 Il. sl C

Description

The invention relates to the field of machining and can be used for machining the mating surfaces of parts.

The purpose of the invention is to obtain surfaces of mating parts such as wedge fastening elements of dies, which ensure reliable connection of the latter, by obtaining the microroughness of the desired direction.

Fig 1 shows the processing scheme of the die plate; Fig, 2 - processing scheme of the stamp; in fig. 3 is a schematic of processing the mating surfaces of the die plate and the wedge; in fig. 4 shows the processing scheme of the mating surfaces of the stamp and the wedge; in fig. 5 is a diagram of the elastic mechanical lock obtained by the implementation of the proposed processing method.

The implementation of the method is illustrated by the example of processing elements of a dovetail type compound.

Processing lead conical cutter 1, having a side 2 and end 3 working surfaces. The cutter set conical surface 2 on the horizontal plane of the groove of the die plate 4, and the end surface to the inclined plane of the groove. Mills reported rotation and movement along the groove of the plate 4.

When processing the stamp 5 (Fig. 2), the cutter 1 is set with the working surface 2 to the horizontal plane of the groove of the stamp 5, and the end surface 3 to the inclined plane of the groove. Processing lead rotation of the cutter and moving along the groove.

When processing the wedge 6, the milling cutter 1 is set with an end face 3 to

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wedge surface. The treatment is carried out during the rotation of the cutter and its longitudinal feed along the border 7 of the working surface so that the border 7 is tangent to the end of the cutter.

The directions of rotation and movement of the milling cutter when processing the mating surfaces are chosen from the condition of obtaining the direction of roughness on one surface specular to the direction of the microroughness on the other surface.

In order to obtain a reliable elastic mechanical lock, the direction of the roughness must be at an angle to the direction of movement of the wedge.

In order to obtain a similar direction of microroughness, the cutting elements are positioned in a plane at an angle to the direction of movement. In this case, the velocity vector does not match the feed vector.

An increase in the reliability of the joint is achieved by the fact that the protrusions of one surface, falling into the depressions between the roughness of the other surface, form an elastic mechanical lock.

In this case, the protrusions in the process of driving the wedge are not destroyed, because, due to the short duration of the impact, their strength and rigidity increase with a dynamic factor, and the protrusions of one surface relative to the other slip

due to the elastic deformations of the wedge, stamp and die plate.

Claims (2)

1. The method of processing flat surfaces, in which the mill report rotation, and the cutter and parts report relative movement along the surface being treated, characterized in that, in order to obtain surfaces mating parts such as wedge fastener elements of dies, ensuring a reliable connection of the latter, the cutting edges of the tool are arranged in a plane at an angle to the direction of relative movement of the part and cutter, while for each pair of mating surfaces the directions of rotation and relative movement are assigned to one of the surfaces is mirrored with respect to the direction of the microroughness on the other. 2. A method according to claim 1, characterized in that, when machining elements of a dovetail-type die coupling, for processing, they take a conical milling cutter with side and end working surfaces, while the matching surfaces of the punch, podshtampovoy plate and wedge are machined with the end surface of the milling cutter surface treatment of the wedge outer boundary of the working surfaces of the latter have a tangent to the end of the cutter. y7 Yaodshtampob S cooker Puz.f fl / tanp FIG 2 FIG. five Working plane Response plane of the wedge bar socket (pU2i  Wedge wedge plane  Ryocha pposnost nest podshtampoby piits Rig.Z