RU1811454C - Shaped rolled stock profiling device - Google Patents

Abstract

Usage: during thermal cutting, in particular, for shaped cutting profile steel. SUMMARY OF THE INVENTION: a shaped sectional profile rolling module comprises a longitudinal stroke portal, a lateral movement carriage, a housing configured to reciprocate in the vertical direction. A copy groove 13 with two annular and one rectilinear sections is made in the housing; an additional carriage 16 is installed in this groove with a pivot axis 17 of the tool 10 with a leash 18, a finger 19 and a copy roller 22. The module allows cutting the entire contour by cutting by moving the additional carriage 16 and rotating the tool 10 relative to the additional carriage 16 by one mechanism. 6 ill.

Description

The invention relates to thermal cutting, in particular to shaped cutting of shaped steel.

The aim of the invention is to expand technological capabilities by providing cutting profiles of a closed type and simplifying the design by ensuring the movement of the additional carriage and the rotation of the torch relative to the additional carriage with one mechanism.

In FIG. 1 depicts an apparatus for profiled cutting of profile steel, a general view; Fig. 2 is a kinematic diagram of a device; Fig. 3 is a section through the carriage of a support for rotation of the torch; figure 4 is a section aa in fig.Z; Figures 5, 6 are diagrams of the bypass of the contour of a closed rectangular profile by the cutter.

The device for shaped cutting of profile steel contains a base 1 (Fig. 4) with guides 2, on which it can be moved along the disclosed steel. 3; - a longitudinal stroke (Z coordinate) is installed on a portal 4, consisting of a portal beam 5, guides b, leading 7 and driven 8 boards. A transverse carriage 9 (X coordinate) is installed on the guides of the portal beam, on the guides of which a housing 11 is mounted to balance the vertical movement (Y coordinate) of the tool 10, balanced by a pneumatic device 12. The lower part of the housing 11 is T-shaped molds with a groove 13 and guides 14 (Fig. 3). A slide 16 is mounted in the rails 14 on the bearings 15, with the possibility of lateral movement. The axis of rotation 17 of the tool 10 (coordinate V) is kinematically connected by a leash 18 and a pin 19 with a chain contour 20, which is in the T-shaped part of the housing has two supporting sprockets 21, symmetrically located relative to the vertical axis of the housing. The turning axis of the tool at the end of the strokes of the carriage 16 coincides geometrically with the axis of rotation of the support sprockets 21. A guide roller 22 mounted in the copier 23 is fixed on the lead 18. The copier has a straight section, and two curved sections at the places of turning the tool. The rectilinear portion of the copier 23 is parallel to the guides 14 of the carriage 16 and is offset from the center lines of the support sprockets 21.

The kinematic diagram of the device (figure 2) structurally consists of four independent parts corresponding to the degrees of mobility, Kinematic circuit

drives of longitudinal, transverse and vertical movements are made of the same type and consist of DC motors 24.25, 26, wave gears 27, 28,

29 and rack and pinion gears 30, 31, 32. The component parts are structurally designed with the condition of maximum rigidity in the transmission of torque using clearance-free connecting elements. A distinctive feature of the longitudinal stroke drive is the power branching along the sides of the beam. The transmission of torque from the leading side 7 to the follower 8 is carried out using

5 of the intermediate shaft 33 and couplings 34. On the rack and pinion gears of the longitudinal 30 and lateral movement 31 there are compensators, 35, 36 of the lateral clearance. The so-called backlash devices. The tool 10 is turned and the carriage 16 is moved (coordinate V) by the DC motor 37, the wave gear 38 and the chain loop 20. The movement feedback is provided on the basis of

5 sensors of an angle of rotation like VSKT. Sensors 39.40, 41, 42 are mounted coaxially with the motors and are connected by means of special compensation couplings.

The device operates as follows. zom. ,. .-; :,: ...

The task of shaped cutting a profile of a closed type, for example, pipes of rectangular or square cross-section, is to move the tool around the entire cross-section of the cross-section, while ensuring a predetermined speed, an angle of inclination to the profile surface and a working clearance between the surface and the torch. The cutting contour can be made of complex spatial form. The task is developed and provided by the control program of the control system. The product 3 is pre-fed, based and fixed on a special device in the cutting zone. The coordinates of the module (X, Y, Z, V) are in the zero position. With the command of the control program, the device occupies the initial position (Exit to the initial command) of Fig. 5a. The carriage 16c with the tool 10 is in the extreme 0 right position, while the tool is mounted vertically. From this point on, plunge and start cutting. The cutting of the lower plane of the rolling is carried out by mechanisms of the coordinate module 5 X, Z in various combinations with linear or circular interpolation / The vertical flange of the profile is cut in the same way (Fig. 6, section A), but with the participation of the coordinate mechanisms Y (with a direct cut ) or Z, V (in the case of the formation of straight bevels and curved contours on this plane). The transition from the vertical plane to the horizontal and vice versa (i.e., the mating section) is carried out by moving the axis of rotation of the tool 10 along the path of the equidistant cutting surface with simultaneous simultaneous rotation of the tool, while ensuring a given working clearance, linear cutting speed and tilt angle to the surface of the car. Such movements are ensured by the operation of the three drives in the screw interpolation mode, the function of which is available in the basic CNC software, the carriage 16 being in the extreme right position. The rotation of the axis 17 of the tool 10 is carried out by a chain contour 20 with a leash 18, and the axis. 17 moves along the pitch circle of the support sprocket 21, the carriage 16 being stationary.

The opening of the upper plane of the profile (Fig. Bb) is carried out similarly to the lower one. The speed of movement of the tool during cutting is the result of the movement of the carriage 16 when moving from one extreme position to another, as well as the movement of the main carriage 9 lateral stroke.

The way to bypass closed profiles by gantry-type devices is based on the use of devices with a cantilever arrangement of the tool relative to the axis of the housing 11. When cutting the left side of the profile, console rights are required and vice versa.

Thus, when cutting a closed profile, it is required to move the carriage 16 with the tool 10 from one console to another while traversing the entire contour. In the case under consideration, this transition occurs during the cutting of the upper horizontal plane of the car. The fixed direction of the tool 10 in space is provided by the position of the leash 18 of the axis 17, The connection of the leash 18 simultaneously with the chain contour 20 and the copier 23, through the roller 22 in the section of movement of the carriage 16 forms a kinematically rigid structure that provides a given angle of inclination of the tool and in the section of linear movement of the carriage as well as in the position of coincidence of the axes when turning the tool. The degree of rigidity of the mechanism in this case is directly proportional to the distance of the linear portion of the copier from the line of centers of the support sprockets 21 of the chain loop 20.

The cutting of the interface between the upper plane and the right vertical wall is carried out in the left position of the carriage 16. Further cutting is similar to the described options and ends with the position of the carriage 16 shown in Fig. 5d. After completion of the cycle, the mechanisms of all coordinates of the module occupy the initial position.

The proposed device shaped cutting profile steel in comparison with the prototype has wide technological capabilities due to the significant expansion of the range

rolled to be cut. Expanding the technological flexibility of the product device allows to increase the efficiency of its use in flexible automated thermal cutting production.

Claims (1)

SUMMARY OF THE INVENTION A device for profiled rolling of shaped sections, comprising a base, transverse rails mounted on them. A vertical carriage with vertical rails mounted on vertical rails, a housing with rails for an additional carriage equipped with a cutter, and a mechanism for moving the additional carriage different the fact that, in order to expand technological capabilities by providing cutting profiles of a closed profile and simplifying the design by ensuring the movement of the additional carriage and the rotation of the torch relative to the additional carriage by one mechanism, longitudinal guides are mounted on the base, a portal is installed on them, and transverse rails are fixed on this portal, the rails of the housings are parallel to the transverse rails, a copier is made in the casing with two annular sections, and a rectilinear section parallel to the rails of the housing, the additional carriage is equipped with an axis of rotation of the torch with a leash equipped with a finger and a copy roller, the carriage moving mechanism is made in the form of a drive chain contour and two support sprockets, the axes of which are located in the housing at the centers of the radii of the circular sections of the copier about the groove, the cutter is fixed on the axis of rotation, the finger of the leash is rigidly connected to the chain circuit, and the trailing roller of the leash is located in the copier element.