Laser and magnetic suction positioning tool for welding powder metallurgy brake shoe

Abstract

The utility model relates to the field of railway product part processing and manufacturing, in particular to a laser and magnetic suction positioning tool for welding a powder metallurgy brake shoe, which comprises a mounting frame, a shoe back magnetic suction base is mounted on the mounting frame, the top of the shoe back magnetic suction base is in an arc shape attached to the bottom of a shoe back, and an electromagnet is arranged in the shoe back magnetic suction base; a laser emitting head for projecting a positioning mark to the top of the tile back is mounted on the mounting frame; the positioning frame is projected through the laser shooting head, after the friction body assembly is placed on the positioning frame, the tile back and the friction body assembly are firmly attracted to the tile back magnetic attraction base through the electromagnet, the welding position degree of the friction body assembly and the tile back can be accurately guaranteed, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of processing and manufacturing railway product parts, and in particular to a laser and magnetic positioning tool for welding powder metallurgy brake shoes. Background Art

[0002] As train speeds increase, how to safely stop high-speed trains is an important issue related to the safety of life and property. Train braking includes resistance braking, magnetic rail braking, eddy current braking, friction braking and other methods, among which friction braking is indispensable. Brake shoe friction braking converts kinetic energy into heat energy through friction, which is then dissipated into the atmosphere. The friction braking of the powder metallurgy brake shoe for HXD3 series locomotives usually adopts wheel braking, which uses the mutual friction between the brake wheel and the brake shoe to consume the train's kinetic energy. Therefore, the performance of these two components has become an important aspect related to the safety of train operation.

[0003] The powder metallurgy brake shoe for HXD3 series locomotive is welded by welding the friction body assembly and the shoe back. In the prior art, the friction body assembly is generally placed in the corresponding position of the shoe back manually before welding, which cannot ensure the position tolerance size requirements of the friction body assembly and the shoe back. In the prior art, there is no positioning tool for powder metallurgy brake shoe welding to ensure that the position tolerance size of the friction body assembly and the shoe back is within the tolerance range of technical requirements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a laser and magnetic positioning tool for powder metallurgy brake shoe welding, which adopts laser projection positioning to improve the welding accuracy of the friction body component and the shoe back, so as to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a laser and magnetic positioning tool for powder metallurgy brake shoe welding, including a mounting frame, a tile back magnetic base is installed on the mounting frame, the top of the tile back magnetic base is an arc shape that fits the bottom of the tile back, and an electromagnet is provided in the tile back magnetic base; a laser shooter for projecting a positioning mark onto the top of the tile back is installed on the mounting frame.

[0006] As a further improvement, a tile nose is provided at the bottom of the tile back, and a positioning groove is provided at the top of the tile back magnetic base corresponding to the position of the tile nose.

[0007] As a preferred technical solution, the mounting frame includes a bottom plate and a top plate located above the bottom plate, and support columns are fixedly installed between four corners of the bottom plate and the top plate.

[0008] As a further improvement, a vertically extending positioning column is fixedly installed on the top of the base plate, and a positioning groove matching the positioning column is provided at the bottom of the tile back magnetic base.

[0009] As a further improvement, a mounting hole is provided on the top plate, and the laser head is fixedly mounted in the mounting hole.

[0010] As a further improvement, a laterally extending slide rail is fixedly mounted on the bottom of the top plate, a slider is slidably mounted on the slide rail, a locking screw for tightening the slide rail is screwed on the slider, and the laser head is movably mounted on the bottom of the slider.

[0011] As a further improvement, a mounting seat is provided under the slider, and the laser head is fixedly installed on the bottom of the mounting seat; a connecting block is fixedly installed on the bottom of the slider, and the mounting seat is provided with a groove with a top opening, the connecting block extends into the groove and can move laterally along the groove, a laterally extending adjusting screw is rotatably installed in the groove, and the connecting block is threadedly connected to the adjusting screw.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] (1) The present application projects a positioning frame through a laser head. After the friction body assembly is placed in the positioning frame, the tile back and the friction body assembly are firmly adsorbed on the tile back magnetic base through an electromagnet, which can accurately ensure the welding position of the friction body assembly and the tile back and effectively improve work efficiency;

[0014] (2) According to the number of friction body components to be welded, the present application can install a corresponding number of sliders and laser heads on the slide rail to facilitate welding of powder metallurgy brake shoes of different models;

[0015] (3) The present application can drive the mounting base and the laser head to move left and right by rotating the adjusting screw, so as to accurately adjust the installation position of the laser head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0018] Figure 2It is a structural schematic diagram of the top plate of the second embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a mounting base of Embodiment 2 of the present utility model;

[0020] Figure 4 yes Figure 3 Schematic diagram of the left side.

[0021] In the figure: 1-mounting frame; 2-bottom plate; 3-top plate; 4-support column; 5-tile back magnetic base; 6-positioning column; 7-positioning groove; 8-laser head; 9-mounting hole; 10-slide rail; 11-slider; 12-locking screw; 13-mounting seat; 14-connecting block; 15-groove; 16-adjusting screw; 17-mounting shaft; 18-tile back; 19-tile nose; 20-friction body assembly. DETAILED DESCRIPTION

[0022] Embodiment 1:

[0023] like Figure 1 As shown, a laser and magnetic positioning tool for powder metallurgy brake shoe welding includes a mounting frame 1, the mounting frame 1 includes a bottom plate 2 and a top plate 3 located above the bottom plate 2, and support columns 4 are respectively fixedly installed between the four corners of the bottom plate 2 and the top plate 3 by bolts.

[0024] A tile back magnetic base 5 is installed on the top of the base plate 2, and a vertically extending positioning column 6 is fixedly installed on the top of the base plate 2. There are at least two positioning columns 6. Specifically, two positioning holes are provided on the base plate 2, and the positioning columns 6 are respectively embedded in the two positioning holes. The upper ends of the positioning columns 6 extend out of the positioning holes, and the bottom of the tile back magnetic base 5 is provided with a positioning groove matching the positioning column 6, thereby playing a positioning role for the base plate 2 and the tile back magnetic base 5.

[0025] The top of the tile back magnetic base 5 is in an arc shape that fits the bottom of the tile back 18. An electromagnet is provided inside the tile back magnetic base 5, and a magnetic switch is provided on the front side of the tile back magnetic base 5. In addition, a tile nose 19 is provided at the bottom of the tile back 18, and a positioning groove 7 is provided at the top of the tile back magnetic base 5 corresponding to the position of the tile nose 19. The mutual cooperation between the tile nose 19 and the positioning groove 7 plays a role in positioning the tile back 18. Positioning grooves are provided at the top of the tile back magnetic base 5 and at the corresponding positions of the concave positions at the bottom of the tile back 18.

[0026] The mounting frame 1 is provided with a laser head 8 for projecting a positioning mark onto the top of the tile back 18. The positioning mark projected downward by the laser head 8 can be a positioning frame. The number of laser heads 8 can be set according to the number of friction body assemblies 20 to be welded and the interval between two adjacent friction body assemblies 20. In this embodiment, three mounting holes 9 are arranged on the top plate 3 at intervals in the horizontal direction, and a laser head 8 is embedded in each mounting hole 9.

[0027] When welding, first place the tile back magnetic base 5 on the top of the bottom plate 2, and position the bottom plate 2 and the tile back magnetic base 5 through the positioning column 6; place the tile back 18 on the top of the tile back magnetic base 5, and position the tile back 18 through the cooperation between the tile nose 19 and the positioning groove 7; turn on the laser head 8 installed on the top plate 3, and the laser head 8 projects the positioning frame downward, and adjusts the light beam of the laser head 8 so that the size of the projected positioning frame is the size of the inner lining plate of the friction body assembly 20, and the position is the correct position where the friction body assembly 20 needs to be welded on the tile back 18. Place the friction body assembly 20 in the positioning frame on the tile back 18, so that the inner lining plate of the friction body assembly 20 completely overlaps with the positioning frame, turn on the electromagnet in the tile back magnetic base 5, and firmly adsorb the tile back 18 and the friction body assembly 20 on the tile back magnetic base 5 through the electromagnet, and then complete the welding of the powder metallurgy brake shoe according to the technical requirements.

[0028] Embodiment 2:

[0029] like Figures 2 to 4 As shown, the difference between this embodiment and the first embodiment is that a laterally extending slide rail 10 is fixedly installed at the bottom of the top plate 3, a slider 11 is slidably installed on the slide rail 10, a locking screw 12 for tightening the slide rail 10 is screwed on the slider 11, and a laser shooter 8 is movably installed at the bottom of the slider 11. In this embodiment, a corresponding number of sliders 11 and laser shooters 8 can be installed on the slide rail 10 according to the number of friction body assemblies 20 that need to be welded, and after the slider 11 is slid along the slide rail 10 to a suitable position, the locking screw 12 is tightened to fix the position of the slider 11, so as to facilitate welding of powder metallurgy brake shoes of different models.

[0030] In order to adjust the position of the laser head 8 more conveniently, a mounting seat 13 is provided below the slider 11, and the bottom of the mounting seat 13 is fixedly installed with the laser head 8 by screws; a connecting block 14 is welded at the bottom of the slider 11, and a groove 15 with a top opening is provided on the mounting seat 13, and the connecting block 14 extends into the groove 15 and can move laterally along the groove 15, and a laterally extending adjusting screw 16 is rotatably installed in the groove 15, and through holes are respectively provided on the left and right side walls of the groove 15, and the two ends of the adjusting screw 16 are integrally formed with a coaxially arranged mounting shaft 17, and the mounting shaft 17 is rotatably installed in the corresponding through hole, and the connecting block 14 is threadedly connected to the adjusting screw 16, and the mounting shaft 17 at one end of the adjusting screw 16 extends to the outside of the mounting seat 13 and is fixedly installed with a knob. When the locking screw 12 is tightened to fix the position of the slider 11, the mounting seat 13 and the laser head 8 can be driven to move left and right by rotating the adjusting screw 16, so as to accurately adjust the installation position of the laser head 8.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A laser and magnetic positioning tool for powder metallurgy brake shoe welding, characterized in that: It comprises a mounting frame, on which a tile back magnetic base is mounted, the top of which is in an arc shape fitting with the bottom of the tile back, and an electromagnet is arranged inside the tile back magnetic base; a laser shooter for projecting a positioning mark onto the top of the tile back is mounted on the mounting frame.

2. The laser and magnetic positioning tool for powder metallurgy brake shoe welding according to claim 1, characterized in that: A tile nose is arranged at the bottom of the tile back, and a positioning groove is arranged at the top of the tile back magnetic base at a position corresponding to the position of the tile nose.

3. The laser and magnetic positioning tool for powder metallurgy brake shoe welding according to claim 1, characterized in that: The mounting frame comprises a bottom plate and a top plate located above the bottom plate, and support columns are fixedly installed between four corners of the bottom plate and the top plate respectively.

4. A laser and magnetic positioning tool for powder metallurgy brake shoe welding as claimed in claim 3, characterized in that: A vertically extending positioning column is fixedly installed on the top of the bottom plate, and a positioning groove matching the positioning column is provided at the bottom of the tile back magnetic base.

5. The laser and magnetic positioning tool for powder metallurgy brake shoe welding according to claim 3, characterized in that: The top plate is provided with a mounting hole, and the laser shooting head is fixedly mounted in the mounting hole.

6. The laser and magnetic positioning tool for powder metallurgy brake shoe welding according to claim 3, characterized in that: A transversely extending slide rail is fixedly installed at the bottom of the top plate, a slider is slidably installed on the slide rail, a locking screw for tightening the slide rail is screwed on the slider, and the laser shooting head is movably installed at the bottom of the slider.

7. The laser and magnetic positioning tool for powder metallurgy brake shoe welding according to claim 6, characterized in that: A mounting seat is provided below the slider, and the laser head is fixedly installed on the bottom of the mounting seat; a connecting block is fixedly installed on the bottom of the slider, and a groove with a top opening is provided on the mounting seat, and the connecting block extends into the groove and can move laterally along the groove, and a laterally extending adjusting screw is rotatably installed in the groove, and the connecting block is threadedly connected to the adjusting screw.

Images