General roof bend beam clamp used or laser cutting technology

Abstract

The invention discloses a general roof bend beam clamp used for the laser cutting technology, and belongs to the field of a general bend beam clamp device used for a rail vehicle roof bend beam laser cutting technology. The clamp comprises a bend beam outer side circular-arc curve face limiting mechanism, an end plate center support, two end plate side square supports, a plurality of transverse ejecting mechanisms, a bend beam supporting rail, a plurality of connecting plates and a base; the clamp can protect the roof bend beam outer side circular-arc curve face, and deformation of the curve face due to excessive extrusion is avoided; circular-arc limiting end faces parallel to the circular-arc curve face of the inner side wall of a circular-arc plate are arranged on two circular-arc curve face inner rib plates of the clamp and are specially used for carrying out matching and limiting on two ends of a circular-arc groove of a cap-shaped bend beam, and therefore positioning precision is improved; when the circular-arc curve face inner rib plates are not used, the circular-arc curve face inner rib plates can be detached, clamping of the roof bend beam cannot be disturbed and affected, and the application flexibility and generality of the clamp can be further expanded.

Description

technical field [0001] The invention belongs to the field of a general-shaped curved beam clamp device used in the laser cutting process of rail vehicle roof curved beams, and in particular relates to a universal clamp for vehicle roof curved beams used in the laser cutting process. Background technique [0002] Such as Figure 4 As shown, rail vehicles such as railway passenger cars and urban railway passenger cars all use curved roof beams with basically the same span and radian. The outer end surface of the curved roof beam is called the inner arc surface of the roof curved beam, and the bottom of the largest plane in the radial direction of the roof curved beam is called the lower end surface of the roof curved beam. In addition, a small straight line is symmetrically arranged at both ends of the curved beam section part. Before performing three-dimensional beam laser cutting on the curved roof beams of such rail vehicles, it is necessary to accurately position the curv...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor versatility, high cost, and poor feasibility of the existing design schemes for making hat-shaped curved beam special fixtures, channel-shaped curved beam special fixtures, and hexagonal curved beam special fixtures, the traditional Horizontal arrangement of multiple sets of push-pull quick clamps in the direction of the normal line. The positioning method of the side wall of the curved beam is easy to cause excessive extrusion and deformation of the curved beam to be processed, which affects the processing accuracy of laser cutting. The technical problem of the roof curved beam universal fixture, the invention provides a kind of roof curved beam universal fixture for laser cutting process

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