Point rail clamping device capable of easily adjusting angle and suitable for point rails of various specifications

Abstract

The invention relates to the rail clamping technology, and aims to provide a point rail clamping device capable of easily adjusting an angle and suitable for point rails of various specifications. Thepoint rail clamping device comprises a front-end clamping part, a middle clamping part and a tail clamping part, wherein each of the front-end clamping part and the middle clamping part comprises anarc-surface base assembly which is composed of an arc-surface base and a movable core block, the arc-surface base is in the shape of a bump, the bottom of the arc-surface base is fixedly arranged on the base, the upper surface of the bump is equipped with a sunken semi-cylindrical arc surface, the main body of the movable core block is cylindrical, a plane parallel to the shaft axis is milled on the side part of the movable core block, and the two ends of the movable core block are provided with positioning bumps higher than the cylindrical surface of the movable core block for blocking the two ends of the bump of the arc-surface base, the cylindrical surface of the movable core block is in clearance fit to the semi-circular-arc surface on the arc-surface base, and the side plane of the movable core block is used for placing the point rail. The point rail clamping device is reliable in clamping performance, improves stability and rigidity of the point rail, is beneficial for cutter milling, improves milling efficiency, and prolongs the service life of an alloy blade.

Description

technical field [0001] The invention relates to a rail clamping technology, in particular to a core rail clamping device suitable for various models of core rails with an easy-to-adjust angle, which is used for clamping double-sided milling machines. Background technique [0002] The heart rail is a key part on the frog of the railway. In the process of processing the heart rail, it is necessary to forge the blank first, and then put the blank on the milling machine for milling, so as to obtain a product that meets the design requirements. Clamping is the key when milling the upper and lower planes, because the two sides of the tip and the end of the core rail are beveled, and the angles of each model are different. On a set of devices, it is very difficult to make the side slopes of the core rails of different models fit effectively with the installation base surface of the device. For example, when the angles between the two sides of the tip of the core rail are 3.26° and...

AI Technical Summary

Problems solved by technology

As a result, the inclined surface of the center rail in the early clamping process could not form an effective bonding surface, and the center line of the center rail could not be placed in a horizontal position, resulting in technical problems such as distortion of the upper and lower planes.

[0003] figure 1 The middle is a schematic diagram of the early heart rail clamping device. It can be seen from the figure that one side slope of the heart rail is directly placed on the base, and its tail is raised; since the heart rail is a rough blank, the flatness of the side slope and the The shape and position accuracy of straightness is poor

When steel plates of different thicknesses are used to fill the gap at the tail end, the joint between the core rail and the base will be in linear or point contact, which will easily cause swinging

Due to the above reasons, there are problems in the processing process: the workpiece vibrates greatly during milling, which is not conducive to the processing of large cutting volume and large cutting tool, the life of the blade is short, the processing efficiency is low, and the cost is high

In addition, because the center line of the core rail is not on the horizontal line and the tail end is tilted, the plane of the side slope is usually milled in a concave form, and the processed plane is severely twisted, which often exceeds the range of shape and position tolerances, affecting product quality. Scrap risk

Images