A tool for machining a railway wheel

Abstract

This utility model discloses a cutting tool for machining train wheel rails, including a tool holder and a cutting head. The cutting head is located at one end of the tool holder, and an adjustable moving plate and a pressing plate are located at the top end of the tool holder. The pressing plate is positioned at the top of the cutting head to press it down. The moving plate and the pressing plate each have an inlet and an outlet water hole for cooling the cutting head. Compared with existing technologies, this utility model offers the advantage that the coolant, after passing through the inlet and outlet water holes, can be directly sprayed onto the machining contact area between the cutting head and the wheel rail, efficiently removing frictional heat, preventing accelerated wear of the cutting head due to high temperatures, significantly extending the tool's service life, reducing tool replacement frequency, lowering processing costs and downtime. Simply align the cooling water pipe with the water inlet cylinder, rotate the rotating plate to fit the sides of the water pipe, and then tighten the fixing screw through the rotating plate and the fixing nut to achieve stable fixing of the water pipe. The operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically a cutting tool for machining train wheel rails. Background Technology

[0002] Train wheel-rail is the core component of railway tracks, consisting of steel rails and wheels interacting to guide and drive trains. The train wheel-rail system mainly consists of two parallel steel rails, fixed to the roadbed or bridge / tunnel by sleepers. These rails provide guidance, support, and load transfer during train operation. The contact surface between the wheel and the rail is called the wheel-rail contact area, and its friction and geometric fit directly affect the smoothness and safety of train operation. Modern rails are mostly made of alloy steel, combining hardness and toughness to withstand the impact and wear of high-speed trains. Early tracks used cast iron or wood, but with technological advancements, they gradually evolved into standardized steel rail systems. During the processing of train wheel-rails, cutting tools are used to machine them. While existing cutting tools meet users' needs to a certain extent, they still have certain shortcomings. Specifically, most cutting tools rely on natural cooling or coarse spray cooling, resulting in the coolant not being precisely applied to the cutting head's machining area. This leads to poor cooling, causing the cutting head to overheat, wear faster, and its lifespan to be significantly shortened, requiring frequent tool replacements. This not only increases processing costs but also affects production efficiency due to downtime for tool changes. Furthermore, the traditional cutting head's fixing structure has poor stability, making it prone to displacement due to vibration during machining, affecting machining accuracy. Therefore, this invention designs a cutting tool for machining train wheel rails to solve the above problems. Utility Model Content

[0003] This utility model provides a cutting tool for machining train wheel rails, which can effectively solve the problems mentioned in the background art. Most cutting tools use natural cooling or rough spray cooling, and the coolant cannot be accurately applied to the machining area of ​​the cutting head, resulting in poor cooling effect, excessively high cutting head temperature, accelerated wear rate, and significantly shortened service life. Frequent tool replacement is required, which not only increases machining costs, but also affects production efficiency due to downtime for tool replacement. In addition, the traditional cutting head fixing structure has poor stability and is prone to displacement due to vibration during machining, affecting machining accuracy.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cutting tool for machining train wheel rails, comprising a tool holder and a cutting head, wherein the cutting head is provided at one end of the tool holder, and an adjustable moving plate and a pressing plate are provided at the top end of the tool holder, wherein the pressing plate is located at the top of the cutting head and presses the cutting head, and the moving plate and the pressing plate are respectively provided with a water inlet hole and a water outlet hole for cooling the cutting head.

[0005] A cutting tool for machining train wheel rails, preferably, has an adjusting screw rotatably connected to the top of the tool holder, and a movable plate is threadedly connected to the outside of the adjusting screw, with extrusion plates welded to both ends of the movable plate.

[0006] A cutting tool for machining train wheel rails, preferably, has a limiting post slidably connected inside the movable plate, and the limiting post is fixedly installed on the top of the tool holder.

[0007] A cutting tool for machining train wheel rails, preferably, has a water inlet cylinder welded through one end of the top of the moving plate, a water inlet hole opened inside the moving plate, and a water outlet hole opened inside the extrusion plate, the water outlet hole being connected to the water inlet hole.

[0008] A cutting tool for machining train wheel rails, preferably, has rotating plates rotatably connected to both ends of the top of the movable plate near the water inlet cylinder, and a fixed nut is slidably embedded inside one of the rotating plates, and a fixed nut is threadedly connected inside the fixed nut.

[0009] A cutting tool for machining train wheel rails, preferably wherein the fixing screw passes through another rotating plate, and a placement groove is provided on one of the rotating plates at a position corresponding to the rotating plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The structure of this utility model is scientific and reasonable, and it is safe and convenient to use: The coolant can be directly sprayed onto the machining contact area between the cutter head and the wheel rail after passing through the water inlet and outlet holes, which can efficiently remove frictional heat, avoid the cutter head from accelerated wear due to high temperature, significantly extend the tool life, reduce the tool replacement frequency, reduce processing costs and downtime. The coolant pipe is aligned with the water inlet cylinder, the rotating plate is rotated to fit the two sides of the water pipe, and then the fixing screw passes through the rotating plate and is tightened with the fixing nut to achieve stable fixation of the water pipe. The operation is convenient. This structure can be adapted to coolant pipes of different diameters by adjusting the spacing of the rotating plates. It has strong versatility and is not easy to loosen after fixing, ensuring continuous and stable cooling process. Rotating the adjusting screw can drive the moving plate to slide smoothly along the limiting post. The pressing plates at both ends of the moving plate move synchronously and press the cutter head, which can effectively enhance the stability of the cutter head during the processing and avoid displacement affecting the accuracy. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the extrusion plate installation structure of this utility model; Figure 3 This is the utility model Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the water outlet opening structure of this utility model; The following are the labels in the diagram: 1. Cutter bar; 2. Cutter head; 3. Adjusting screw; 4. Moving plate; 5. Limiting post; 6. Extrusion plate; 7. Water inlet cylinder; 8. Rotating plate; 9. Fixing screw; 10. Fixing nut; 11. Water inlet hole; 12. Water outlet hole. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0014] Example: Figure 1-4 As shown, this utility model provides a technical solution: a cutting tool for processing train wheel rails, including a tool holder 1 and a cutting head 2. The cutting head 2 is provided at one end of the tool holder 1. An adjusting screw 3 is rotatably connected to the top of the tool holder 1. A moving plate 4 is threadedly connected to the outside of the adjusting screw 3. A limit post 5 is slidably connected inside the moving plate 4. The limit post 5 is fixedly installed on the top of the tool holder 1. Extrusion plates 6 are welded to both ends of the moving plate 4. A water inlet cylinder 7 is welded through one end of the top of the movable plate 4. Rotating plates 8 are rotatably connected to both ends of the top of the movable plate 4 near the water inlet cylinder 7. A fixed nut 10 is slidably embedded inside one of the rotating plates 8. A fixed nut 10 is threaded inside the fixed nut 10. A water inlet hole 11 is opened inside the movable plate 4. A water outlet hole 12 is opened inside the extrusion plate 6. The water outlet hole 12 is connected to the water inlet hole 11.

[0015] The fixing screw 9 passes through another rotating plate 8. A placement groove is opened at the position of the rotating plate 8 to facilitate the pressing and fixing of the two rotating plates 8, thereby fixing the external cooling water pipe.

[0016] First, align the outlet of the external cooling water pipe with the inlet cylinder 7 at the top of the moving plate 4. Then, rotate the rotating plates 8 at the top of the moving plate 4 near both ends of the inlet cylinder 7, so that the two rotating plates 8 respectively fit against both sides of the cooling water pipe. Insert the fixing screw 9 through one of the rotating plates 8 and into the corresponding placement groove of the other rotating plate 8. Then, insert the fixing nut 10 into the sliding connection inside one of the rotating plates 8 and connect it with the fixing screw 9 through threads. Tighten the fixing nut 10 so that the two rotating plates 8 press against each other, thereby stably fixing the cooling water pipe at the inlet cylinder 7, completing the installation and fixing of the cooling water pipe, and ensuring that the coolant can flow steadily into the inlet cylinder 7. According to the specifications of the train wheel rail to be processed, the adjusting screw 3 at the top of the tool holder 1 is rotated. Since the adjusting screw 3 is connected to the moving plate 4 by a thread, and the moving plate 4 is slidably connected to the outside of the limiting post 5, the rotation of the adjusting screw 3 will drive the moving plate 4 to slide smoothly along the limiting post 5. During the sliding process of the moving plate 4, the extrusion plates 6 welded at both ends of it move synchronously, so that the extrusion plates 6 extrude the tool head 2, ensuring the stability of the tool head 2 during use. The external cooling system is started, and the coolant flows into the water inlet cylinder 7 at the top of the moving plate 4 through the fixed cooling water pipe. Then, the coolant flows to the extrusion plate 6 through the water inlet hole 11 opened inside the moving plate 4. After the coolant enters the extrusion plate 6, it is precisely sprayed into the processing contact area between the tool head 2 and the train wheel rail through the water outlet hole 12 opened on the extrusion plate 6, which carries away the heat generated during processing, thereby achieving precise cooling and improving the service life of the tool.

[0017] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cutting tool for machining train wheel rails, comprising a tool holder (1) and a cutting head (2), wherein the cutting head (2) is provided at one end of the tool holder (1), characterized in that: The top end of the cutter bar (1) is provided with an adjustable movable plate (4) and a pressing plate (6). The pressing plate (6) is located on top of the cutter head (2) to press the cutter head (2). The movable plate (4) and the pressing plate (6) are respectively provided with a water inlet hole (11) and a water outlet hole (12) for cooling the cutter head.

2. A tool for machining a rail of a train wheel according to claim 1, characterized in that, The top of the cutter bar (1) is rotatably connected to an adjusting screw (3), and a moving plate (4) is threadedly connected to the outside of the adjusting screw (3). Both ends of the moving plate (4) are welded with extrusion plates (6).

3. A tool for machining a rail of a train wheel according to claim 2, characterized in that, The movable plate (4) is internally connected to a limiting post (5), which is fixedly installed on the top of the cutter bar (1).

4. The tool for machining a rail of a train wheel according to claim 1, wherein The top end of the movable plate (4) is welded with a water inlet cylinder (7). The movable plate (4) has a water inlet hole (11) inside. The extrusion plate (6) has a water outlet hole (12) inside. The water outlet hole (12) is connected to the water inlet hole (11).

5. A tool for machining a rail of a train wheel according to claim 4, characterized in that, The top of the movable plate (4) is rotatably connected to both ends of the water inlet cylinder (7). A fixed nut (10) is slidably connected inside one of the rotating plates (8). A fixed nut (10) is threaded inside the fixed nut (10).

6. A tool for machining a rail of a train wheel according to claim 5, characterized in that, The fixing screw (9) passes through another rotating plate (8), and a placement groove is provided at the position of the rotating plate (8) corresponding to the rotating plate (8).

Images