CN-116944644-B - Device and method for removing residual materials and flash of friction welding intermediate piece

CN116944644BCN 116944644 BCN116944644 BCN 116944644BCN-116944644-B

Abstract

The invention discloses a device for removing excess materials and burrs of a friction welding intermediate piece, which comprises a machine body, a cutting assembly and a pushing assembly, wherein the machine body comprises a first part and a second part which are used for bearing and fixing two ends of a steel rail, a guide rail is fixedly arranged between the first part and the second part, the cutting assembly is fixedly arranged on one end of the guide rail, which faces the first part of the machine body, so that the excess materials and the burrs of the intermediate piece after welding the third friction body can be cut, and the pushing assembly is movably arranged on one end of the guide rail, which faces the second part of the machine body, so that the excess materials and the burrs of the intermediate piece after welding the third friction body can be pushed and removed. The invention can automatically remove the redundant part and flash of the intermediate piece after friction welding at one time, perfects the production flow of the third body friction welding, improves the production efficiency, reduces the thrust required by removing the residual material and flash of the intermediate piece with low temperature and large section by adopting a mode of combining cutting and sectioning pushing and removing, and effectively reduces the tonnage of equipment.

Inventors

ZHU ZHIMING
XIE JIAQI
ZHANG HAN

Assignees

清华大学

Dates

Publication Date: 20260505
Application Date: 20230808

Claims (6)

1. A friction welding disc-shaped, low-temperature, large-section and thick-wall intermediate piece residue and flash removing method is characterized in that the adopted removing device comprises the following steps: the machine body comprises a first part and a second part which are used for bearing and fixing two ends of a steel rail, and a guide rail is fixedly arranged between the first part and the second part; The cutting assembly is fixedly arranged at one end of the guide rail, which faces the first part of the machine body, so that the cutting operation is performed on the surplus material and the flash of the intermediate piece after the third friction body is welded, the cutting assembly comprises a mechanical arm fixedly arranged on the guide rail, the mechanical arm comprises a first rotating joint, a second rotating joint and a third moving joint which are sequentially connected, and a plasma arc cutting gun is fixedly arranged at the tail end of the third moving joint; The pushing component is movably arranged at one end of the guide rail, which faces the second part of the machine body, so that the surplus materials and the flash of the intermediate piece after the third friction body is welded are pushed out; The push-out assembly includes: The tool rest can be slidably arranged at one end of the guide rail, which faces the second part of the machine body, and a pushing hole for the steel rail to pass through is formed in the tool rest; The split type pushing and removing knife comprises a first knife body and a second knife body which are symmetrically arranged at two sides of the pushing and removing hole, the first knife body and the second knife body are slidably connected with the knife rest, and pushing and removing knife edges for pushing and removing the rest materials and flash edges of the intermediate piece are arranged on two opposite side surfaces of the first knife body and the second knife body; the base end and the output end of the locking oil cylinder are fixedly connected with the first cutter body and the second cutter body respectively, so that the first cutter body and the second cutter body are kept in a butt locking state in pushing and removing operation; The oil pushing cylinder is fixedly arranged on the rack of the second part, and the output end of the oil pushing cylinder penetrates through the rack of the second part to be fixedly connected with the tool rest so as to control the movement of the tool rest on the guide rail; The removing method comprises the following steps: S1, driving a friction roller to drive a steel rail to be inserted into pushing-out knife edges of a first knife body and a second knife body through a driving motor, and conveying the steel rail to be processed and a middleware to a designated position; S2, after the steel rail is fed, controlling a clamping cylinder to clamp the steel rail from two sides of the steel rail so as to keep the steel rail at a position to be processed; S3, controlling a cutting assembly to cut the surplus material and the flash of the intermediate piece, enabling the plasma arc cutting gun to be close to one side surface of the intermediate piece when the cutting operation is carried out, and cutting a cutting opening from the outer edge of the intermediate piece to be close to the surface of the steel rail from the surplus material and the flash of the intermediate piece, so that the surplus material and the flash of the intermediate piece are segmented; S4, controlling a pushing and removing assembly to push and remove the intermediate piece after the cutting operation is completed, and completely pushing and removing the cut intermediate piece remainder and flash; S5, after the pushing operation is finished, controlling the cutting assembly and the pushing assembly to return to the initial positions, and preparing for cutting and pushing the rest materials and the flash of the intermediate piece next time; and S6, the clamping oil cylinder retreats to an initial position to loosen the steel rail, and the steel rail is moved out.
2. The method for removing excess materials and burrs of a friction welding disc-shaped, low-temperature, large-section and thick-wall middleware according to claim 1, wherein the first part and the second part are respectively provided with a frame, the interiors of the two frames are respectively penetrated with a fixing cavity for accommodating a steel rail, the penetrating directions of the fixing cavities are the same as the length direction of the guide rail, the two fixing cavities are opposite to each other, each side wall of the frame is penetrated with a plurality of groups of clamping cylinders so as to clamp and fix the steel rail from two sides of the steel rail, and the telescopic ends of the clamping cylinders towards one side of the steel rail are provided with clamps for clamping the steel rail.
3. A friction weld disc, low temperature, large cross section, thick wall middleware trim and flash removal method as claimed in claim 1 wherein said first portion has a support arm at an end facing away from the second portion of the body, said support arm having support rollers at ends for supporting the rails.
4. The method for removing the excess materials and the burrs of the friction welding disc-shaped, low-temperature, large-section and thick-wall middleware according to claim 1, wherein a bearing platform is arranged at one end of the second part, which is opposite to the first part of the machine body, of the machine frame, a limiting block for limiting the position of a steel rail is arranged on the bearing platform, a friction roller which is abutted to the steel rail is arranged between the machine frame and the limiting block, the friction roller is fixedly connected to the bearing platform through a rotating shaft, and the friction roller is in transmission connection with a driving motor.
5. The method for removing excess materials and flash of a friction welding disc-shaped, low-temperature, large-section and thick-wall intermediate piece according to claim 1, wherein each pushing blade is a stepped blade with a concave middle and convex two sides, the two pushing blades are arranged opposite to each other, and after the first blade body is abutted with the second blade body, the two pushing blades form a pushing blade hole which accords with the outer contour of the cross section of a steel rail.
6. The method for removing the remnants and the burrs of the disc-shaped, low-temperature, large-section and thick-wall intermediate piece of friction welding according to claim 1, wherein in the step S4, after the cutting of the notch in the step S3 is completed, the plasma arc cutting gun is moved out, the split type pushing and removing knife on the steel rail is locked, and then the pushing and removing cylinder is controlled to push the knife rest towards the intermediate piece along the axis of the steel rail.

Description

Device and method for removing residual materials and flash of friction welding intermediate piece Technical Field The invention relates to the technical field of welding, in particular to a device and a method for removing excess materials and burrs of a friction welding intermediate piece. Background Friction welding is a solid phase welding technology capable of obtaining a welding joint with good metallurgical bonding and mechanical properties, has wide range of weldable materials and high production efficiency, and is widely applied to the fields of aerospace, mechanical manufacturing, petroleum drilling, automobile manufacturing and the like. The invention patent ZL202210108261.X discloses a middle piece rotating steel rail friction welding device, which solves the problem that long steel rails do high-speed relative motion through middle piece rotation of which two side surfaces are in contact with the end surfaces of the steel rails, can realize high-efficiency and high-quality steel rail solid phase welding, and has sufficient technical advantages compared with fusion welding. As a necessary process link after welding, the conventional friction welding method and equipment for rotating the steel rail of the intermediate piece do not provide a systematic method for removing the flash after welding and the peripheral surplus materials of the intermediate piece, and are difficult to be directly applied to mass industrial production. Because the intermediate piece is required to completely cover the non-revolving section of the steel rail in a steel rail enveloping circle mode, and meanwhile, enough margin is required to be further reserved on the periphery of the intermediate piece for stable clamping and driving to rotate, for the rotary friction welding of the intermediate piece, disc-shaped intermediate piece residues and flash which are required to be removed after welding are usually larger in circumference and thickness. In addition, compared with welding modes such as flash welding, pneumatic welding, thermite welding and the like, the removal temperature of the residual materials of the intermediate piece after friction welding and the generated flash is lower, and the shearing strength of the material is higher. If the traditional pushing mode of pushing the tumor knife applied to flash welding, pneumatic welding and thermite welding is used singly, larger pushing force is needed, the pushed-out annular surplus materials and flash edges of the intermediate piece cannot be directly taken down from the steel rail, and the flash edges and the surplus materials of the intermediate piece are difficult to be removed smoothly. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. In order to achieve the above object, the present invention provides a device for removing excess material and flash of a friction welding intermediate piece, comprising: the machine body comprises a first part and a second part which are used for bearing and fixing two ends of a steel rail, and a guide rail is fixedly arranged between the first part and the second part; the cutting assembly is fixedly arranged at one end of the guide rail, which faces the first part of the machine body, so that the cutting operation is performed on the surplus materials and the flash of the intermediate piece after the third friction body is welded; And the pushing component is movably arranged at one end of the guide rail, which faces the second part of the machine body, so that the residue and flash of the intermediate piece after the third friction body is welded are pushed out. The invention can automatically remove the redundant part and flash of the intermediate piece after friction welding at one time, perfects the production flow of the third body friction welding, improves the production efficiency, reduces the thrust required by removing the residual material and flash of the intermediate piece with low temperature and large section by adopting a mode of combining cutting and sectioning pushing and removing, and effectively reduces the tonnage of equipment. The device has compact and simple structure and good adaptability to front and back working procedures and various long rod type rotationally symmetrical and asymmetrical workpieces. Optionally, all be provided with the frame on the first part and on the second part, two the frame is inside all to run through and to be provided with the fixed chamber that is used for holding the rail, the direction of running through of fixed chamber with guide rail length direction is the same to be set up, and two fixed chambeies just set up, every run through on the frame lateral wall and be provided with a plurality of groups of clamping cylinder to make from rail both sides to rail clamping fixation, the flexible end of clamping cylinder towards rail one side is provided with the anchor clamps that are used fo