RU2427459C1 - Burnishing device - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to device intended for producing reticulate grooves and surface hardening by plastic deformation. Device comprises burnishing head wherein two rolls and holder are fitted on axles, said holder being jointed with burnishing head. Holder and burnished are keyed together. Key faces are skewed. Holder is made up of bar with one side provided with groove to receive O-ring and key slot while its other side may be fixed in machine tool holder. Burnishing head represents a shackle with key slot and is arranged at straight angle to holder and locked by said O-ring. Key is fitted in key slot of holder with interference fit and, in burnishing head, its is arranged with clearance to allow burnishing head to turn therein.

EFFECT: ease of replacement and use, no additional adjustments.

6 dwg

Description

The invention relates to the field of engineering, in particular to devices for rolling mesh corrugations and hardening of the surface layer by plastic deformation.

A device for cross-rolling, consisting of a holder, two rollers with the help of axes mounted in a replaceable head, which is connected to the holder with a screw [Shepsenvol A.I. Auxiliary tool in instrumentation. - L .: Mashgiz, - 1962, Fig. 75.].

The disadvantages of the known device are: the difficulty of replacing the knurling head, the need for additional adjustments to combine the horizontal axes of the device and the workpiece, as well as the difficulty of processing parts in hard to reach places.

The objective of the invention is to simplify the replacement of the knurling head, the exclusion of additional adjustments, as well as simplifying the processing of parts in hard to reach places.

The tasks are solved in that in the known device for rolling on machines containing a knurling head, in which two rollers and a holder connected to the knob are fixed by axes, according to the INVENTION, the holder and the knurling head are connected by means of a key, the ends of which are made with beveled corners , the holder is made in the form of a bar, one side has a groove for the retaining ring and a keyway, the other side of the holder is made with the possibility of fixing in the tool holder of the machine, the knurling head made in the form of an earring with a keyway, mounted relative to the holder at right angles and secured with a locking ring, while the key is installed in the keyway of the holder with interference, and in the keyway of the knurling head - with the formation of a gap in the place of its installation for the possibility of turning the knob .

The invention is illustrated by drawings, where

figure 1 - the proposed device for rolling;

figure 2 - installation diagram of the knurling head when the horizontal axes of the device and the part do not match (the axis of the device is higher than the axis of the part);

figure 3 - installation diagram of the knurling head when the horizontal axes of the device and the part do not match (the axis of the device is lower than the axis of the part);

figure 4 - installation diagram of the knurling head;

figure 5 - processing of the inner surface of the part;

figure 6 - processing of the outer surface of the part.

The rolling device (Fig. 1) consists of a knurling head 1 and a holder 2 for attaching it to the support of the machine in the tool holder.

The knurling head 1 is made in the form of an earring, deployed relative to the holder 2 at a right angle, which ensures free movement of the device in hard to reach places. Two parallel holes are made in the knurling head 1, at the end of which a thread is cut. The working elements are knurled rollers 3 with thrust belts, and knurled rollers 3 have an oblique gear notch of different directions, which allows you to get an oblique mesh (cross) rolling. The rollers 3 are fixed in the knurling head 1 with the help of axes in the form of step screws 4.

The screws 4 securing the rollers 3 in the knurling head 1 are mounted flush and do not protrude beyond the plane of the knurling head.

The holder 2 is made in the form of a bar, one side of which has the shape of a shaft with a keyway in which the key 5 is pressed in, and a snap ring groove 6.

The connection of the knurling head 1 and the holder 2 occurs with the help of a key 5. From the possibility of axial movement of the knurling head 1 relative to the holder 2, a snap ring 6 is installed.

The combination of the horizontal axes of the cross-rolling device and the workpiece 7 (FIGS. 2 and 3) is ensured by the construction of the key 5 and the keyways of the holder 2 and the knob 1. For this, the key 5 in the groove of the holder 2 is tightened, and the groove in the knurling head 1 made of increased size in width, which allows when connecting the holder 2 and the knurling head 1 to obtain at the installation location of the key 5, the gap D (figure 4). This gap allows the knurling head 1 to be rotated through an angle α (FIGS. 2 and 3), which, if the horizontal axes of the knurling head 1 and the workpiece do not coincide (distance X) (FIGS. 2 and 3), will make it possible to obtain a surface of the required quality without additional adjustments.

To exclude the collapse of the keys 5 during the rotation of the knob 1, the ends of the keys 5 at the top are beveled at an angle γ (Fig. 4), which allows us not to disturb the contact plane of the keys 5 with the groove of the knob 1 when it is rotated through an angle α.

The holder 2 is installed and fixed in the tool holder 8 (Fig.5 and 6) of a lathe (not shown). Part 7, subjected to processing, is installed and fixed in the cartridge 9 of the machine.

The operation of the proposed device is as follows.

The holder 2 is brought to the workpiece 7, the required value of the longitudinal feed is selected, the cutting depth of the knurled rollers 3 is set according to the vernier of the machine, the rotation drive of the part 7 is turned on, and thereby the knurled rollers 3 are exposed to the surface of the workpiece 7. As a result of the action of the rollers 3 the surface of the part 7 forms a machined and hardened surface.

To replace the knurling head 1 (resizing L and A) (Fig. 4), when changing the parameters of the knurled part, it is necessary to remove the retaining ring 6 from the grooves of the holder 2, remove the head 1 from the key 5, install another knurling head 1 and install the retaining ring 6 .

Thus, the use of the proposed device allows to simplify the replacement of the knurling head, to exclude additional adjustments, as well as to simplify the processing of parts in hard to reach places.

Claims (1)

Device for rolling on machines, comprising a knurling head, in which two rollers are fixed by means of axes, and a holder connected to the knurling head, characterized in that the holder and the knurling head are connected by means of a key, the ends of which are made with beveled corners, the holder is made in the form bar, one side has a groove for the snap ring and keyway, the other side of the holder is made with the possibility of fixing in the tool holder of the machine, the knurled head is made in the form of an earring with a keyway, installed detecting relative to the holder at a right angle and fixed a lock ring, wherein the key is installed in the keyway of the holder with an interference fit, and a keyway knurled head - to form a clearance at the site of installation of the rolling head rotatably.

Images