Rail drilling machine tool

Abstract

A machine tool for drilling railway tracks is disclosed, relating to the field of railway technology. This machine tool includes a gantry, a lifting device, a ram, and drilling tools. The gantry has intersecting first, second, and height directions. A pressing device is connected to the gantry for pressing the railway track. Lifting devices are connected to both sides of the gantry along the first direction. Each lifting device is connected to a ram, and the ram can move up and down along the height direction with the lifting device. A drilling tool is connected to each ram, and the ram can drive the drilling tool to move along the first direction to feed the drilling tool, thereby facilitating the cutting of the railway track. The axes of the two drilling tools are located on the same straight line. The purpose of this invention is to provide a machine tool for drilling railway tracks, which to a certain extent solves the technical problem in the prior art where secondary repositioning affects the hole accuracy.

Description

Technical Field

[0001] This invention relates to the field of railway technology, and more specifically, to a machine tool for drilling railway tracks. Background Technology

[0002] In the safe operation system of railway transportation, rail maintenance is a core link in ensuring line stability, and specialized rail drilling machine tools are an indispensable key piece of equipment in this process. These are not ordinary drilling tools, but specialized processing equipment developed specifically for the high strength and hardness of rail materials. Specialized rail drilling machine tools are mainly used for precision drilling operations such as joint holes and chamfering during rail laying, maintenance, and renovation, directly affecting the robustness of rail joint connections and the safety of line operation.

[0003] Rail drilling requires chamfers at both ends of the hole. Currently, after completing the chamfering and drilling on one side of the rail, the special rail drilling machine needs to be repositioned to the other side of the rail for chamfering again. This second repositioning seriously affects the accuracy of the hole. Summary of the Invention

[0004] The purpose of this invention is to provide a machine tool for drilling railway tracks, so as to solve to some extent the technical problem in the prior art that secondary repositioning affects the accuracy of the holes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A machine tool for drilling railway tracks includes a gantry, a lifting device, a ram, and drilling tools; the gantry has a first direction, a second direction, and a height direction that intersect each other in pairs; The gantry is connected to a pressing device, which is used to press the rails together. Along the first direction, the lifting devices are connected to both sides of the gantry; each lifting device is connected to the slide block, and the slide block can move up and down along the height direction with the lifting device; Each of the slides is connected to a drilling tool, and the slide can drive the drilling tool to move along the first direction to drive the drilling tool to feed, thereby facilitating the cutting of the rail; The axes of the two drilling tools are on the same straight line.

[0006] In one possible implementation, each of the rams is provided with a drill bit feed detection device; the drill bit feed detection device is configured to detect the distance between the tip of the drill bit and the web surface of the rail. The ram is equipped with a rail end reference detection device; the rail end reference detection device is configured to detect the distance between the rail end reference detection device and the rail end of the rail; The slide block is connected to a drill bit temperature detection device; the drill bit temperature detection device is configured to detect the temperature of the tip of the drilling tool.

[0007] In one possible implementation, the drill bit feed detection device includes a detection driver and a contact measuring head. The detection driver is fixed on the ram and drives the contact measuring head to abut against the web surface of the rail. When the contact measuring head abuts against the web surface of the rail, the contact measuring head is configured to detect the distance between the tip of the drill bit and the web surface of the rail. The drill bit temperature detection device includes a temperature bracket and a temperature sensor; the temperature sensor is fixedly connected to the temperature bracket, the temperature bracket is connected to the slide box of the slide, and the temperature bracket is configured to adjust the angle of the temperature sensor relative to the slide box. The rail end reference detection device includes a photoelectric sensor; The drill bit temperature detection device includes an infrared thermometer.

[0008] In one possible implementation, the machine tool for drilling railway rails further includes a body extending along the second direction; a plurality of mounting platforms are fixedly connected to the body, and the plurality of mounting platforms are spaced apart along the second direction; the top surface of the mounting platform is a working surface for supporting and connecting the railway rail.

[0009] In one possible implementation, a plurality of electromagnetic chucks are fixedly connected to the machine body, and the plurality of electromagnetic chucks are spaced apart along the second direction; the top surface of the electromagnetic chuck is the bottom surface of the rail that supports and connects to the rail. Along the height direction, the top surface of the electromagnetic chuck is flush with the top surface of the mounting platform; Along the second direction, the electromagnetic chuck and the mounting platform are alternately arranged.

[0010] In one possible implementation, a plurality of support platforms are fixedly connected to the body of the machine, and the plurality of support platforms are spaced apart along the second direction; The mounting platform and the electromagnetic chuck are fixedly connected to the top surface of each of the support platforms; The electromagnetic chuck is an electro-permanent magnet chuck.

[0011] In one possible implementation, the top surface of the mounting platform has a positioning part, the side of the positioning part is a positioning surface that abuts against the bottom side of the rail, the positioning surface is adjacent to the working surface, and the positioning surface is perpendicular to the working surface.

[0012] In one possible implementation, the machine tool for drilling railway tracks further includes a pusher device that is fixed relative to the machine body; the pusher device is configured to drive the railway track toward the positioning surface.

[0013] In one possible implementation, the gantry is capable of moving along the fuselage; A tool magazine device is connected to one side of the gantry; the tool magazine device is configured to supply its own tools to the drilling tools located on the same side of the gantry.

[0014] In one possible implementation, the ram includes a ram housing, a main shaft, a main shaft drive device, and an oil-air lubrication device; the ram housing is slidably connected to the lifting device. The spindle is disposed inside the slide box, and one end of the spindle extends out of the front end of the slide box and is connected to the drilling tool; The main shaft drive device is located on the upper part of the slide box and is connected to the main shaft via a transmission belt, so that the main shaft can rotate around its own axis. The oil-air lubrication device is located at the rear end of the slide box; the spindle has a through-hole along its axis; the oil-air output end of the oil-air lubrication device is connected to the through-hole of the spindle, and is used to supply oil-air to the drilling tool through the through-hole of the spindle.

[0015] The main beneficial effects of this invention are: The present invention provides a machine tool for drilling railway rails, comprising a gantry, a lifting device, a ram, and drilling tools. The gantry's pressing device presses the railway rail, thus fixing it in place. Lifting devices are connected to both sides of the gantry, each connected to a ram, and each ram is equipped with a drilling tool. The axes of the two drilling tools are aligned on the same straight line. The ram drives the drilling tools to move along a first direction, thereby feeding the drilling tools and facilitating the cutting of the railway rail. This allows for the drilling and chamfering of one side of the rail with a drilling tool, and the chamfering of the other side with a drilling tool. This enables the drilling and chamfering of both ends of the hole to be completed in a single setup, effectively avoiding secondary repositioning that could affect the hole's accuracy and significantly improving the precision of railway rail drilling. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a machine tool for drilling railway tracks provided in an embodiment of the present invention; Figure 2 for Figure 1 The image shown is an enlarged view of area A of a machine tool used for drilling railway tracks. Figure 3 for Figure 1 The enlarged view of area B of the machine tool used for drilling railway tracks is shown. Figure 4 for Figure 1 The image shown is an enlarged view of area C of a machine tool used for drilling railway tracks. Figure 5 This is a schematic diagram of another perspective of the structure of the rail drilling machine tool provided in an embodiment of the present invention; Figure 6 This is a partially enlarged schematic diagram of a machine tool for drilling railway tracks provided in an embodiment of the present invention; Figure 7 This is another partially enlarged schematic diagram of a machine tool for drilling railway tracks provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the slide block structure provided in an embodiment of the present invention; Figure 9 for Figure 8 An enlarged view of area D of the slide shown; Figure 10 A cross-sectional view of the slide provided in an embodiment of the present invention.

[0018] Icons: 100-Gantry; 110-Translation device; 200-Lifting device; 300-Roller; 310-Drill bit feed detection device; 320-Roller housing; 330-Spindle; 340-Spindle drive device; 341-Transmission belt; 350-Oil-air lubrication device; 360-Air blowing pipeline; 370-Drill bit temperature detection device; 400-Drilling tool; 500-Material clamping device; 600-Machine body; 610-Mounting platform; 611-Positioning part; 620-Electromagnetic chuck; 630-Bearing platform; 700-Pushing device; 800-Tool magazine device; 900-Railway. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] This embodiment provides a machine tool for drilling railway tracks, which can be used for drilling operations on high-strength, high-hardness, and difficult-to-machine materials, such as railway tracks.

[0027] See Figures 1-10As shown, the rail drilling machine tool provided in this embodiment includes a gantry 100, a lifting device 200, a ram 300, and a drilling tool 400; the gantry 100 has a first direction, a second direction, and a height direction that intersect each other. Optionally, the first direction, the second direction, and the height direction are mutually perpendicular, such that the rail 900 extends along the second direction, and the drilling tool 400 moves and feeds along the first direction.

[0028] The gantry 100 is connected to a pressing device 500, which is used to press the rail; for example, the pressing device 500 is used to press the rail head. By pressing the rail head of the rail 900 with the pressing device 500 of the gantry 100, the slight rotation of the rail 900 caused by the drilling cutting force during drilling can be effectively avoided or reduced, thereby effectively ensuring the accuracy of drilling.

[0029] Along the first direction, lifting devices 200 are connected to both sides of the gantry 100; each lifting device 200 is connected to a ram 300, and the ram 300 can move up and down along the height direction with the lifting device 200, thereby driving the drilling tool 400 to move up and down along the height direction with the ram 300, thus adjusting the axial height of the drilling tool 400. That is, one lifting device 200 is connected to one ram 300 to adjust the height of the corresponding drilling tool 400, so that the axes of the drilling tools 400 on both sides of the rail 900 are on the same straight line.

[0030] Each ram 300 is connected to a drilling tool 400. The ram 300 drives the drilling tool 400 to move in a first direction to feed the drilling tool 400, thereby facilitating the cutting of the rail 900. That is, the ram 300 drives the drilling tool 400 to move in the first direction, thereby facilitating the cutting of the rail 900 by the drilling tool 400. The cutting of the rail 900 may include, for example, chamfering or drilling. A spindle is provided inside the ram 300, and the drilling tool 400 is mounted on the spindle. The spindle drives the drilling tool 400 to rotate for cutting.

[0031] The axes of the two drilling tools 400 are aligned on the same straight line. By aligning the axes of the two drilling tools 400 on the same straight line, the drilling and chamfering of both ends of the rail 900 can be completed in a single setup, effectively improving the drilling accuracy of the rail 900.

[0032] The rail drilling machine tool described in this embodiment includes a gantry 100, a lifting device 200, a ram 300, and drilling tools 400. The rail is fixed by pressing it with a pressing device 500 on the gantry 100. Lifting devices 200 are connected to both sides of the gantry 100, each lifting device 200 is connected to a ram 300, and each ram 300 is connected to a drilling tool 400. The axes of the two drilling tools 400 are on the same straight line. The ram 300 can drive the drilling tools 400 to move along a first direction to feed them, thus facilitating the cutting of the rail. This allows the drilling tool 400 to chamfer and drill on one side of the rail, and the drilling tool 400 to chamfer on the other side of the rail. This enables the drilling and chamfering of both ends of the hole to be completed in one setup, effectively avoiding secondary repositioning that would affect the hole's accuracy and significantly improving the precision of rail drilling.

[0033] In an optional embodiment, both the lifting device 200 and the slide 300 are electrically controlled, as is the spindle 330, which houses the drilling tool 400. Optionally, both the lifting device 200 and the slide 300 employ a direct drive mechanism where a servo motor is directly connected to a ball screw, with the output shaft of the servo motor and the input end of the ball screw coaxially fixed / transmitted. Optionally, the spindle 330 is connected to the drive motor via a belt drive mechanism, enabling the spindle to rotate around its own axis, wherein the drive motor is fixed to the slide's housing.

[0034] In the optional embodiment, the overall structure formed by the two slides 300 is a symmetrical structure. The symmetrical structure of the overall structure formed by the two slides 300 facilitates the adjustment of the axes of the two drilling tools 400 to be on the same straight line, thereby facilitating the completion of drilling and chamfering at both ends of the rail 900 in one clamping, effectively improving the drilling accuracy of the rail 900.

[0035] In the optional embodiment, the overall structure formed by the two drilling tools 400 is a symmetrical structure. The symmetrical structure of the overall structure formed by the two drilling tools 400 makes it easier to adjust the axes of the two drilling tools 400 to be on the same straight line, thereby facilitating the completion of drilling and chamfering at both ends of the rail 900 in one clamping, effectively improving the drilling accuracy of the rail 900.

[0036] In the optional embodiment, the overall structure formed by the two lifting devices 200 is a symmetrical structure. This symmetrical structure facilitates adjusting the axes of the two drilling tools 400 to be on the same straight line, thereby enabling the rail 900 to be drilled and chamfered at both ends in a single setup, effectively improving the drilling accuracy of the rail 900.

[0037] Optionally, the gantry 100 adopts an integrated closed casting structure, which greatly ensures rigidity and stability during machining.

[0038] Optionally, the machine tool for drilling railway rails adopts a movable gantry structure, that is, the gantry 100 adopts a movable gantry structure, which means that the gantry 100 can move along the machine body 600, making it convenient for the gantry 100 to move along the railway rail 900 to drill holes at different positions on the railway rail 900.

[0039] In an optional embodiment, the number of pressing devices 500 is one or more; multiple pressing devices 500 are arranged along the second direction, that is, multiple pressing devices 500 sequentially press the rail 900 along the second direction. See Figure 1 and Figure 2 As shown, there are two pressing devices 500. By using two pressing devices 500, one can be used as a backup, and the main and backup pressing devices 500 can be switched automatically or manually. When one pressing device 500 fails, needs maintenance, or stops abnormally, the other pressing device 500 can be put into operation immediately, effectively ensuring continuous operation of the equipment, avoiding downtime and production stoppage, significantly improving the reliability, stability and safety of operation, and at the same time facilitating the maintenance of a single pressing device 500 and extending the overall service life.

[0040] Optionally, the pressing device 500 is hydraulically controlled or controlled by other means, such as electrical control or pneumatic control. Hydraulic control of the pressing device 500 offers advantages such as high output force, smooth transmission, and fast response. It enables stepless speed regulation and overload protection, and also features good buffering performance, low impact, and is suitable for stable operation under heavy-duty and high-precision conditions.

[0041] See Figure 6 As shown, in the optional scheme of this embodiment, the gantry 100 is provided with a translation device 110; the translation device 110 and the machine body 600 are driven by a motor and a gear rack; for example, the output shaft of the motor of the translation device 110 is connected to the machine body 600 by a gear rack transmission mechanism.

[0042] See Figure 8 and Figure 9 As shown, in an optional embodiment, each ram 300 is equipped with a drill bit feed detection device 310; the drill bit feed detection device 310 is configured to detect the distance between the tip of the drill bit 400 and the web surface of the rail 900. The drill bit feed detection device 310 facilitates rapid detection of the distance between the tip of the drill bit and the web surface of the rail 900.

[0043] See Figure 8 and Figure 9As shown, in an optional embodiment, the drill bit feed detection device 310 includes a detection driver and a contact measuring head. The detection driver is fixed on the ram 300 and drives the contact measuring head to abut against the web surface of the rail 900. When the contact measuring head abuts against the web surface of the rail 900, the contact measuring head is configured to detect the distance between the tip of the drill bit and the web surface of the rail 900, thereby enabling rapid detection of the drill bit feed dimension.

[0044] Optionally, the detection actuator may include a cylinder or other drive mechanism; for example, the detection actuator may be driven by an electric motor.

[0045] See Figure 8 and Figure 9 As shown, in an optional embodiment, the ram 300 is equipped with a rail end reference detection device to detect the distance between the rail end reference detection device and the rail end of the rail 900. The rail end reference detection device facilitates the detection of the position of the rail end of the rail 900, thereby facilitating the detection of the distance between the borehole and the rail end.

[0046] Optionally, the rail end reference detection device includes a photoelectric sensor or other sensors for measuring the rail end reference. Photoelectric sensors offer advantages such as non-contact detection, fast response speed, wide detection distance range, high accuracy, long lifespan, and good reliability. They can stably detect various objects, including metals, non-metals, and transparent bodies, and are compact and easy to install.

[0047] See Figure 8 and Figure 9 As shown, in an optional embodiment, the slide 300 is connected to a drill bit temperature detection device 370; the drill bit temperature detection device 370 is configured to detect the temperature of the tip of the drilling tool 400; the drill bit temperature detection device 370 is used to detect the temperature of the tip of the drilling tool 400 in real time.

[0048] Optionally, the drill bit temperature detection device 370 includes a temperature bracket and a temperature sensor. The temperature sensor is fixedly connected to the temperature bracket, which is connected to the ram 300, for example, to the ram housing 320 of the ram 300. The temperature bracket is configured to adjust the angle of the temperature sensor relative to the ram housing 320. Adjusting the angle of the temperature sensor facilitates better detection of the temperature at the tip of the drill bit 400. In this embodiment, the temperature bracket can adjust the angle of the temperature sensor relative to the ram housing 320. For example, the angle of the temperature sensor can be adjusted by adjusting the position of the temperature sensor on the temperature bracket, or the temperature bracket can be rotatably connected to the ram housing 320 to adjust the angle of the temperature sensor, or other methods can be used to achieve the angle adjustment of the temperature sensor.

[0049] Optionally, the drill bit temperature detection device 370 includes an infrared thermometer or other temperature sensor, which can be used to detect the tip temperature of the drill bit 400, that is, to detect the temperature near the cutting point. An alarm temperature can be set according to the requirements of the drill bit 400 to protect the drill bit 400 from cutting within the normal temperature range.

[0050] See Figures 1-7 As shown, in an optional embodiment, the rail drilling machine tool further includes a machine body 600 extending along a second direction; a plurality of mounting platforms 610 are fixedly connected to the machine body 600, and the plurality of mounting platforms 610 are spaced apart along the second direction; the top surface of the mounting platform 610 is a working surface for supporting and connecting the rail, that is, the top surface of the mounting platform 610 supports the bottom surface of the rail 900. The mounting platform 610 supports and connects the rail 900.

[0051] See Figures 1-7 As shown, in the optional scheme of this embodiment, a plurality of electromagnetic chucks 620 are fixedly connected to the body 600, and the plurality of electromagnetic chucks 620 are spaced apart along the second direction; the top surface of the electromagnetic chuck 620 is the bottom surface of the rail that supports the connection rail, that is, the top surface of the electromagnetic chuck 620 supports the bottom surface of the rail 900.

[0052] Along the height direction, the top surface of the electromagnetic chuck 620 is flush with the top surface of the mounting platform 610; that is, the top surface of the mounting platform 610 and the top surface of the electromagnetic chuck 620 work together to support and connect the bottom surface of the rail 900; compared with the tooling claw, using the electromagnetic chuck 620 to attract the bottom surface of the rail 900 can effectively improve the uniformity of the force applied to the rail 900 and avoid excessive local stress that could cause micro-deformation of the rail 900.

[0053] Optionally, along the second direction, the electromagnetic chuck 620 and the mounting platform 610 are alternately arranged.

[0054] See Figures 1-7 As shown, in an optional embodiment, a plurality of support platforms 630 are fixedly connected to the body 600, and the plurality of support platforms 630 are spaced apart along the second direction.

[0055] Each support platform 630 has a mounting platform 610 and an electromagnetic chuck 620 fixedly connected to its top surface; the mounting platform 610 and the electromagnetic chuck 620 are arranged along a second direction; the support platform 630 allows the mounting platform 610 and the electromagnetic chuck 620 to be modularized, which is beneficial for the production, processing and assembly of rail drilling machine tools. In this embodiment, the support platform 630 and the mounting platform 610 can be integrally set, or they can be fixedly connected by screws, welding or other methods.

[0056] Optionally, the electromagnetic chuck 620 is an electro-permanent magnet chuck. The electro-permanent magnet chuck is energized only during charging and demagnetizing, requiring no power supply during operation. It features no loss of magnetism when power is off, safety and reliability, zero energy consumption, and no thermal deformation. It offers stable and uniform suction force, fast response, high clamping accuracy, a simple structure with no easily damaged parts, requires no maintenance, and has a long service life. Compared to traditional permanent magnet chucks, which require manual operation, are cumbersome, and have uncontrollable suction force, and hydraulic clamps, which are complex, prone to oil leaks, have high maintenance costs, and are susceptible to pressure decay, the electro-permanent magnet chuck offers convenient operation, one-button charging and demagnetizing, adjustable and controllable suction force, no moving parts or oil leak risks, no heat generation or thermal deformation, higher clamping accuracy and efficiency, superior safety and stability, and lower overall operating costs.

[0057] See Figures 1-7 As shown, in the optional embodiment, the top surface of the mounting platform 610 has a positioning part 611. The side of the positioning part 611 is a positioning surface that abuts against the side of the rail base of the rail. The positioning surface is adjacent to the working surface, and there is an angle between the positioning surface and the working surface. Through the positioning part 611 of the mounting platform 610, the side of the rail base of the rail 900 can easily abut against the side of the positioning part 611, so as to accurately position the rail 900 on the machine body 600, effectively improving the efficiency of clamping the rail 900 on the machine body 600, and also providing good conditions for the accuracy of drilling the rail 900.

[0058] Optionally, the positioning surface is perpendicular or approximately perpendicular to the working surface.

[0059] This embodiment is used for a rail drilling machine. The bottom of the rail 900 is supported and connected by the mounting table 610 and the top surface of the electromagnetic chuck 620 on the machine body 600. The pressing device 500 of the gantry 100 presses the rail head of the rail 900, which can effectively fix the rail 900 on the machine body 600. The positioning part 611 of the mounting table 610 accurately positions the rail 900 on the machine body 600, which effectively improves the efficiency of clamping the rail 900 on the machine body 600 and provides good conditions for the accuracy of drilling the rail 900. The electromagnetic chuck 620 attracts the bottom of the rail 900, the mounting table 610 supports and connects the bottom of the rail 900, the pressing device 500 presses the rail head of the rail 900, and the positioning part 611 positions the rail. It can be used to clamp different types of rail 900, which effectively improves the versatility and clamping efficiency.

[0060] See Figures 1-7As shown, in an optional embodiment, the rail drilling machine tool further includes a pusher device 700 fixed relative to the machine body 600. The pusher device 700 is configured to drive the rail 900 toward the positioning surface. For example, the pusher device 700 drives the rail 900 toward the positioning surface under the action of a hydraulic mechanism. The pusher device 700 can automatically control the pushing of the rail 900 to a preset position, such as pushing the rail 900 to a position abutting against the positioning surface.

[0061] In an optional embodiment, the number of pusher devices 700 and the number of support platforms 630 can be the same or different; optionally, the number of pusher devices 700 and the number of support platforms 630 are the same.

[0062] In an optional embodiment, the pushing device 700 is located between two adjacent support platforms 630.

[0063] In the optional embodiment, the feeding device 700 is hydraulically controlled, or controlled by other means, such as electrical control or pneumatic control. Hydraulic control of the feeding device 700 offers advantages such as high output force, smooth transmission, and fast response. It enables stepless speed regulation and overload protection, has a compact structure and flexible layout, and provides good buffering performance and low impact, making it suitable for stable operation under heavy loads, high precision, and harsh working conditions.

[0064] This embodiment is used for a rail drilling machine tool. The mounting table 610 and the top surface of the electromagnetic chuck 620 on the machine body 600 are used to support the bottom of the rail 900. The pusher device 700 is controlled to push the rail 900 toward the positioning surface of the mounting table 610, that is, to push the side of the bottom of the rail 900 toward the side of the positioning part 611. When the side of the bottom of the rail 900 abuts against the side of the positioning part 611, the electromagnetic chuck 620 is activated to pick up the bottom of the rail 900, and the pressing device 500 of the gantry 100 is controlled to press the rail head of the rail 900, which can effectively fix the rail 900 on the machine tool. Then, the rail 900 is drilled. After the drilling is completed, the pressing device 500 is lifted, the gantry 100 is moved to the next drilling position, the pressing device 500 is activated to press the rail head of the rail 900, and then the rail 900 is drilled. This cycle is repeated.

[0065] See Figures 1-6 As shown, in an optional embodiment, a tool magazine device 800 is connected to one side of the gantry 100. The tool magazine device 800 is configured to supply its own tools to drilling tools 400 located on the same side of the gantry 100. That is, the drilling tools 400 and the tool magazine device 800 are located on the same side of the gantry 100. The tool magazine device 800 allows the drilling tools 400 located on the same side as the tool magazine device 800 to obtain different drill bits, facilitating chamfering and drilling by the drilling tools 400.

[0066] In this embodiment, the drill bit of the drilling tool 400 located on the opposite side of the tool magazine device 800 does not need to be replaced; only chamfering is required. That is, the drilling tool 400 located away from the tool magazine device 800 is fitted with a chamfering drill bit 400.

[0067] In an optional embodiment, the tool magazine device 800 includes at least one drilling tool 400 for drilling and at least one drilling tool 400 for chamfering. The tool magazine device 800 may include multiple drilling tools 400 for drilling, which may be of the same or different specifications. The tool magazine device 800 also needs to include at least one drilling tool 400 for chamfering to facilitate chamfering at the ends of the holes.

[0068] See Figures 8-10 As shown, in an optional embodiment, the ram 300 includes a ram housing 320, a spindle 330, a spindle drive device 340, and an oil-air lubrication device 350. The ram housing 320 is slidably connected to the lifting device 200.

[0069] The spindle 330 is disposed inside the ram housing 320, and one end of the spindle 330 extends out of the front end of the ram housing 320 and is connected to the drilling tool 400. Optionally, the drilling tool 400 includes a drilling bit and / or a chamfering tool; the drilling bit can be used to drill holes in the rail, and the chamfering tool can be used to chamfer the rail.

[0070] The spindle drive device 340 is located on the upper part of the ram housing 320 and is connected to the spindle 330 via a transmission belt 341, enabling the spindle 330 to rotate around its own axis. By positioning the spindle drive device 340 on the upper part of the ram housing 320, the sliding stroke of the ram housing 320 can be shortened, effectively improving the overall rigidity of the ram 300 and enhancing its resistance to bending and torsional deformation. The transmission via the transmission belt 341 simplifies the ram 300, facilitates maintenance, eliminates the need for a gearbox, shortens the transmission chain, and improves transmission accuracy and efficiency. Simultaneously, it significantly enhances the overall rigidity of the ram 300, strengthening its resistance to bending and torsional deformation, making it suitable for drilling high-strength, high-hardness rails.

[0071] An oil-air lubrication device 350 is located at the rear end of the slide box 320; the spindle 330 has a through-hole along its axis; the oil-air output end of the oil-air lubrication device 350 is connected to the through-hole, and is used to supply oil and air to the drilling tool 400 through the through-hole. The oil-air output end of the oil-air lubrication device 350 delivers the oil-air mixture to the through-hole, and then directly delivers the oil-air mixture to the drilling tool 400 through the through-hole, for providing micro-lubrication and cooling to the drilling tool 400.

[0072] In this embodiment, the ram 300 is mounted on the upper part of the ram housing 320 via a spindle drive device 340, and the spindle drive device 340 is connected to the spindle 330 via a transmission belt 341. This eliminates the need for a gearbox, resulting in a simple structure that is easy to maintain. It also shortens the sliding stroke of the ram 300, effectively improving the overall rigidity of the ram 300 and enhancing its resistance to bending and torsional deformation. When drilling difficult-to-machine materials such as high-strength and high-hardness rails, it can effectively suppress the deformation and vibration of the ram 300, ensuring drilling position accuracy, hole diameter accuracy, and processing stability.

[0073] See Figures 8-10 As shown, in an optional embodiment, the slide ram 300 further includes an air blowing pipe 360 ​​and an air supply pipe; the air supply pipe is connected to the input end of the air blowing pipe 360, and the output end of the air blowing pipe 360 ​​is configured to face the drilling tool 400 so as to spray gas onto the processing area of ​​the drilling tool 400, thereby cooling the drilling tool 400 and cleaning iron filings and dust, ensuring drilling accuracy and the stability of the processing.

[0074] Optionally, the air supply line is also connected to the air supply input terminal of the oil-air lubrication device 350.

[0075] Optionally, the oil-air lubrication device 350 has an oil supply input terminal. The oil supply input terminal supplies oil to the oil-air lubrication device 350, and the air supply input terminal supplies air to the oil-air lubrication device 350, so that the air and oil are mixed and then output from the oil-air output terminal of the oil-air lubrication device 350.

[0076] See Figures 8-10 As shown, in the optional embodiment, the output end of the air blowing pipe 360 ​​is located at the upper part of the slide box 320, so that the output end of the air blowing pipe 360 ​​is better directed toward the drilling tool 400, so that gas can be better sprayed onto the processing area of ​​the drilling tool 400, thereby cooling the drill bit and other drilling tools 400 and cleaning iron filings and dust, ensuring drilling accuracy and processing stability.

[0077] In this embodiment, the spindle drive device 340 can be a motor or other drive structures, such as pneumatic or hydraulic devices. Using a motor to drive the spindle drive device 340 results in a simple and compact structure, high transmission efficiency, and low transmission error, improving the speed and position control accuracy of the spindle 330. The motor's fast response and smooth operation effectively reduce vibration and noise, enhancing the overall operational stability of the ram 300. Furthermore, the motor is easy to maintain and highly reliable, meeting the requirements of heavy-duty, high-precision, and long-term continuous operation in rail drilling. Alternatively, the spindle drive device 340 can be a servo motor, such as a Siemens servo motor. Servo motors offer advantages such as a wide speed range, high positioning accuracy, fast response, good dynamic characteristics, smooth operation, high low-speed torque, strong overload capacity, sensitive control, and good stability, enabling precise closed-loop control of position, speed, and torque.

[0078] In the optional embodiment, the slide box 320 is integrally set; by making the slide box 320 integrally set, the rigidity and strength of the overall structure can be effectively improved, the assembly gap and assembly cumulative error can be reduced, which is conducive to improving the motion accuracy of the spindle 330 and the long-term accuracy maintenance of the equipment; at the same time, the overall structure can be simplified, the vibration during the operation of the equipment can be reduced, the motion can be made smooth and reliable, the service life of the equipment can be extended, and the maintenance cost can be reduced.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A machine tool for drilling holes in railway tracks, characterized in that, It includes a gantry, a lifting device, a slide block, and drilling tools; the gantry has a first direction, a second direction, and a height direction that intersect each other in pairs; The gantry is connected to a pressing device, which is used to press the rails together. Along the first direction, the lifting devices are connected to both sides of the gantry; each lifting device is connected to the slide block, and the slide block can move up and down along the height direction with the lifting device; Each of the slides is connected to a drilling tool, and the slide can drive the drilling tool to move along the first direction to drive the drilling tool to feed, thereby facilitating the cutting of the rail; The axes of the two drilling tools are on the same straight line.

2. The machine tool for drilling railway tracks according to claim 1, characterized in that, Each of the slide blocks is provided with a drill bit feed detection device; the drill bit feed detection device is configured to detect the distance between the tip of the drill bit and the web surface of the rail; The ram is equipped with a rail end reference detection device; the rail end reference detection device is configured to detect the distance between the rail end reference detection device and the rail end of the rail; The slide block is connected to a drill bit temperature detection device; the drill bit temperature detection device is configured to detect the temperature of the tip of the drilling tool.

3. The machine tool for drilling railway tracks according to claim 2, characterized in that, The drill bit feed detection device includes a detection driver and a contact measuring head. The detection driver is fixed on the ram and drives the contact measuring head to abut against the web surface of the rail. When the contact measuring head abuts against the web surface of the rail, the contact measuring head is configured to detect the distance between the tip of the drill bit and the web surface of the rail. The drill bit temperature detection device includes a temperature bracket and a temperature sensor; the temperature sensor is fixedly connected to the temperature bracket, the temperature bracket is connected to the slide box of the slide, and the temperature bracket is configured to adjust the angle of the temperature sensor relative to the slide box. The rail end reference detection device includes a photoelectric sensor; The drill bit temperature detection device includes an infrared thermometer.

4. The machine tool for drilling railway tracks according to claim 1, characterized in that, It also includes a fuselage extending along the second direction; multiple mounting platforms are fixedly connected to the fuselage, and the multiple mounting platforms are spaced apart along the second direction; the top surface of the mounting platform is a working surface that supports and connects to the rail.

5. The machine tool for drilling railway tracks according to claim 4, characterized in that, Multiple electromagnetic chucks are fixedly connected to the machine body, and the multiple electromagnetic chucks are spaced apart along the second direction; the top surface of the electromagnetic chuck is the bottom surface of the rail that supports and connects to the rail. Along the height direction, the top surface of the electromagnetic chuck is flush with the top surface of the mounting platform; Along the second direction, the electromagnetic chuck and the mounting platform are alternately arranged.

6. The machine tool for drilling railway tracks according to claim 5, characterized in that, Multiple support platforms are fixedly connected to the machine body, and the multiple support platforms are spaced apart along the second direction; The mounting platform and the electromagnetic chuck are fixedly connected to the top surface of each of the support platforms; The electromagnetic chuck is an electro-permanent magnet chuck.

7. The machine tool for drilling railway tracks according to claim 4, characterized in that, The mounting platform has a positioning part on its top surface. The side of the positioning part is a positioning surface that abuts against the bottom side of the rail. The positioning surface is adjacent to the working surface and is perpendicular to the working surface.

8. The machine tool for drilling railway tracks according to claim 7, characterized in that, It also includes a material pushing device that is fixed relative to the position of the machine body; the material pushing device is configured to drive the rail toward the positioning surface.

9. The machine tool for drilling railway tracks according to claim 4, characterized in that, The gantry can move along the fuselage; A tool magazine device is connected to one side of the gantry; the tool magazine device is configured to supply its own tools to the drilling tools located on the same side of the gantry.

10. The machine tool for drilling railway tracks according to claim 1, characterized in that, The slide includes a slide housing, a main shaft, a main shaft drive device, and an oil-air lubrication device; the slide housing is slidably connected to the lifting device. The spindle is disposed inside the slide box, and one end of the spindle extends out of the front end of the slide box and is connected to the drilling tool; The main shaft drive device is located on the upper part of the slide box and is connected to the main shaft via a transmission belt, so that the main shaft can rotate around its own axis. The oil-air lubrication device is located at the rear end of the slide box; the spindle has a through-hole along its axis; the oil-air output end of the oil-air lubrication device is connected to the through-hole of the spindle, and is used to supply oil-air to the drilling tool through the through-hole of the spindle.

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