SK341692A3 - Multipurposed, sublevel machine tool - Google Patents

Abstract

The aim of the sublevel machine-tool used for more purposes is to provide lathe-turning operation of the transversal profiles closed to wheel-sets (8) of the rail vehicles tied up not tied up of the chassis. On the stand (1),there is standing at least one couple of the co-axial spindles (2), being able to approach to each other. Their clams (4) are prepared on the outer surface (41) sot hat, the tyre or the mono block of the wheel-sets (8) could be fixed after the internal shoulder. On the stand (1), there is placed one pair of the knife supports (5).

Description

Technical field

The object of the invention is a multipurpose sublevel machine tool for turning the traveling profiles of wheelsets of rail vehicles not tied or tied from a bogie.

BACKGROUND OF THE INVENTION

Underfloor machine tools are used for machining the wheel profiles of both wheels for both grinding and turning. Grinding underfloor machine tools use traction axes to rotate the axles because the cutting resistance during grinding is low, resulting in a lengthy operation. Due to the construction of a continuously dressed grinding wheel, the grinding wheel can only grind the traveling surface of the window. The outer side surface of the flange remains unworked, which is insufficient for tram wheels due to the shape of the rail profile. If the machining of the wheelset of the ear is rotated by turning, it is necessary, as in the case of grinding, to fit the wheelset to the wheels, but these are driven. If a tied axle is being worked, the front vehicle is replaced with an additional bearing between the axles via the spikes in the axles of the wheel wheels with the outside bearings, then by the thrust on the bearing housings. This solution is only suitable for wheelsets with fixed monoblocks. Such a solution is unsuitable for wheelsets with built-in rubber-metal elements in the wheels, since the additional pressure causes undesirable deformation of the rubber-metal elements with a permanent destructive effect.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are eliminated by an underfloor machine tool according to the invention for turning the running profiles of rolling stock not tied or tied from the chassis. At least one pair of coaxial stands opposed on the stand. U dvojkolies

- J_O. in *.

headstocks that can be brought closer together. Their jaws are provided on the outer surface to receive the rim or monoblock of the wheelset by the inner shoulder. A pair of knife supports are placed on the stand. Such a solution allows for precise machining of the wheelset even with the built-in rubber-metal elements, since the wheelset is held close to the machined surface and there is no undesirable deformation of the rubber-metal elements. If the inner surface of the jaws of the animal with the outer surface of an acute angle, then the wedge of the jaws will facilitate the gripping of the wheelset under permanent deformation of the rubber-metal element in the unladen condition, otherwise the frontal cover of the wheel does not allow gripping. In one solution, it is convenient if the headstock is mounted on the portal and its columns can be height adjustable. For transmitting the torque from the headstock to the wheelsets to be machined, it is advantageous if the at least one headstock is equipped with a front knife carrier. Depending on the overall solution, the knife supports can then be retracted into the side or into the side

s. <y,

BRIEF DESCRIPTION OF THE DRAWINGS

An overall view of a multi-purpose machine tool according to the invention in a schematic representation is shown in the drawings, wherein FIG. 1 shows a support that is extendable in height and FIG. 2 shows a side-extendable slide shown in FIG. 3 is a side view. A detailed cross-sectional view of the wheel with the flange fastened to the clamping head is shown in FIG. 4 and FIG. 5 wheel in monolithic design.

DETAILED DESCRIPTION OF THE INVENTION

At least one pair of coaxial headstocks 2 are opposed on the stand 1. The stand 1 may consist either of individual parts interconnected by a solid foundation or it is monolithic. Each of the headstocks 2 is provided with a clamping head 3 with clamping jaws 4, which on the outer surface 42 are adapted to receive a hoop or a wheel set 8 by an inner shoulder. A pair of knife supports 5 are arranged on the stand 1. or up. For easier gripping of the wheelset 8, it is preferable that the inner surface kg of the jaws 4 form an acute angle with the outer surface 41. In one embodiment shown in FIG. 2 and 3, the headstock 2 is seated on a port 6 which is mounted on a stand 1. According to an embodiment, the headstock 2 can be height-adjusted together with the travers 61 on the poles 62 for greater adaptability to different wheel diameters 8. at least one of the spindles 2 provided with a front knife carrier 7.

When turning the coupled wheelset, the wheelset is clamped by the jaws 4, the outer surfaces 41 of which are shaped to clamp the hoop or the monoblock to the inner shoulder.

If the wheel set 8 is equipped with a rubber-metal suspension in the wheel which is covered by the front cover, then the inner surface 42 clamping with the outer surface 41 a sharp angle facilitates the push-off of the front cover and the outer surface 41 more easily adjacent the inner shoulder of the hoop or monoblock. To increase the torque transmission effect, it is advantageous to use a solution with a front knife carrier 7, which also ensures the transmission of torque from the headstock 2 to the wheelset S. When turning an unbalanced wheelset 8, it is advantageous to eliminate the traction vehicle weight by conventional jacks not shown or by lifting the traction vehicle with a crane and placing it on the ground. The spindles 2 in this manner are not loaded by force and the machining is then close to the machining of the bound wheel set 8 by the force load. The knife supports 6 can then support both the running profile and the surrounding area on both the outer profile and the outer profile. wheel side. As long as the wheelset 8 is free of the giant, it is also possible to machine its cylindrical surfaces for the next lalisov orang.

List of reference marks

- stand

2-headstock

- clamping head

- eelusť

- external surface

- inner surface

- knife supcrt

- portal

- traverse

- column

- front blades;

- avojkolieie

Claims (7)

PATENT CLAIMS A multi-level underfloor machine tool for turning rolling stock of wheelsets of rolling stock not tied or unloaded from a bogie, characterized in that at least one pair of coaxial headstocks (2) mutually aligned, whose jaws (4) are facing each other are arranged on the outer surface (41) to receive the rim or monoblock of the wheelset by the inner shoulder, while a pair of knife supports (5) are located on the stand (1). 2. A multi-purpose underground machine tool according to claim 1, characterized in that the inner surface (42) indicating the jaws (4) together with the outer surface (41) is at an acute angle. The multi-purpose underground machine tool according to Claims 1 and 2, characterized in that the headstock (2) is mounted on a portal (6) mounted on the stand (1). 4. The multi-purpose underground machine tool according to claim 1, 2 and 3, characterized in that the girder (61) of the portal (6) is height adjustable on the columns (62). A multi-purpose underfloor machine tool according to claim 1, 2, 3 and 4, characterized in that at least one of the pair of headstocks (2) is provided with a front knife carrier (7). 6. Multipurpose underground machine tool according to item 1, 2, 3, 4 and 5, characterized in that these (5) are extendable laterally. t y m, that nasal supor 7. Multipurpose underground machine tool according to item 1, 2, 3, 4 and 5, characterized by the ports (5) being extendable in height.