A special processing machine for train bolsters

Abstract

The utility model is suitable for train swing bolster processing technical field provides a kind of special processing machine tool of train swing bolster, it includes: machine tool body casting, servo feed shaft X axis, machine tool workstation, servo feed shaft Y axis, main shaft assembly, servo feed shaft Z axis, left milling head lifting shaft, right milling head lifting shaft, gantry upright column, side milling head feed shaft, connecting side spindle, side spindle motor, side spindle ram, side spindle gear box, angle adjustable power head;In the utility model, by adding left and right side milling head lifting shaft, side milling head feed shaft, connecting side spindle, side spindle motor, side spindle ram, side spindle gear box and angle adjustable power head on the basis of traditional gantry machine tool, all processing features of upper surface and two side bevels can be completed by workpiece once clamping.

Description

Technical Field

[0001] This utility model belongs to the field of train bolster processing technology, and in particular relates to a special processing machine tool for train bolsters. Background Technology

[0002] As the core load-bearing component of the train bogie, the machining accuracy of the bolster directly affects the safety of railway operation. However, traditional machining methods have many limitations, which led to the development of specialized machine tools. Before the advent of specialized machine tools, bolster machining relied mainly on equipment such as vertical milling machines, horizontal milling and boring machines, or general-purpose gantry milling machines. Due to the large weight of the cast steel bolster blank (up to 640 kg), the large machining allowance, the complex structure, and the need to machine many holes and planes, the machining process faced multiple challenges.

[0003] However, in practice, some problems still exist:

[0004] 1. Existing train bolster machining typically relies on general-purpose gantry milling machines or simple mechanical clamping devices to complete the machining of the upper surface and side slopes. During the machining process, the workpiece needs to be clamped multiple times to meet the machining requirements of different directions and different cutting tools. Each reclamping leads to the accumulation of positioning errors, resulting in a decrease in machining accuracy. In addition, traditional machining methods are inefficient, have long machining cycles, and high production costs. Especially in the machining of complex slopes and multi-feature parts, it is difficult to guarantee surface quality and dimensional stability, which restricts the development of high-precision, mass production of train bolsters.

[0005] 2. Although traditional gantry milling machines have multi-axis movement capabilities along the X, Y, and Z directions, they lack a dedicated side milling head structure, making it impossible to perform one-time machining of side features. During machining, manual intervention is required to adjust the tool angle and position, which is complex and unstable, easily causing machining deviations and surface roughness. The structure of traditional machine tools cannot simultaneously take into account the machining of the upper surface and side features, resulting in low machining efficiency. This makes it difficult to meet the requirements of modern train bolster production for high-precision, high-efficiency, and automated machining. There is an urgent need for a dedicated machining machine tool that can complete the machining of multiple features in one clamping. Utility Model Content

[0006] This utility model provides a special machine tool for processing train bolsters, aiming to solve the problems mentioned in the background art.

[0007] This utility model is implemented as follows: a special processing machine tool for train bolsters includes: a machine tool body casting, a servo feed axis X-axis, a machine tool worktable, a servo feed axis Y-axis, a spindle assembly, a servo feed axis Z-axis, a left milling head lifting axis, a right milling head lifting axis, a gantry column, a side milling head feed axis, a connecting side spindle, a side spindle motor, a side spindle slide, a side spindle gearbox, and an angle-adjustable power head;

[0008] The gantry columns are fixedly connected to both sides of the machine tool body casting;

[0009] The servo feed axis X-axis is mounted on the slide rail above the machine tool body casting, and the machine tool worktable is fixedly mounted on the servo feed axis X-axis slider.

[0010] The servo feed axis Y-axis is fixed in front of the gantry column, the servo feed axis Z-axis slider is mounted on the servo feed axis Y-axis slider, and the spindle assembly is fixedly mounted on the servo feed axis Z-axis slider.

[0011] The left and right milling head lifting shafts are installed on the track in front of the gantry column, the side milling head feed shaft is fixedly installed on the slider of the right milling head lifting shaft, and the side spindle slide is fixedly installed on the slider of the side milling head feed shaft.

[0012] The connecting side spindle is fixedly installed on the side spindle slide, the side spindle motor is fixedly installed at the corresponding position on the side spindle slide and is connected to the input end of the connecting side spindle through the side spindle gearbox, and the angle-adjustable power head is fixed at the tapered hole of the connecting side spindle.

[0013] Preferably, the machine tool worktable is fixed to the servo feed axis X-axis slider by bolts, so that the machine tool worktable can move along the X-axis with the slider and form a linkage with the servo feed axis Y-axis slider.

[0014] Preferably, the servo feed axis Y-axis slider is fixedly connected to the gantry column via a guide rail, the servo feed axis Z-axis slider is fixedly connected to the servo feed axis Y-axis slider, and the spindle assembly is fixedly mounted on the servo feed axis Z-axis slider, thereby enabling the spindle assembly to move along the Y-axis and Z-axis.

[0015] Preferably, the side milling head feed axis slider is fixedly connected to the right milling head lifting axis slider by bolts, and the side spindle slide is fixedly connected to the side milling head feed axis slider, so as to realize the side milling head feeds along the Y-axis.

[0016] Preferably, the connecting side spindle is fixedly installed on the side spindle slide, the side spindle motor is fixed above the side spindle slide, and is meshed with the side spindle input end through the side spindle gearbox. The angle-adjustable power head is fixed in the tapered hole of the connecting side spindle by bolts.

[0017] Preferably, the left and right milling head lifting shafts are fixed to the track in front of the gantry column by bolts, so that the side milling head can move along the lifting direction.

[0018] Preferably, the servo feed axes X-axis, Y-axis, and Z-axis, as well as the lifting axes of the left and right milling heads and the side milling head feed axes, are connected to the machine tool CNC system through a linkage mechanism to achieve one-time machining of the upper surface and side features.

[0019] Preferably, the machine tool body casting is fixed to the gantry column by bolts to ensure the rigidity of the machine tool structure and the machining accuracy.

[0020] Preferably, the sliders of the machine tool worktable, spindle assembly and side milling head assembly are fixedly connected by guide rails and bolts, so as to complete all machining features in one clamping.

[0021] Preferably, the angle-adjustable power head can adjust the tool angle according to the side slope machining requirements to achieve machining of different side features.

[0022] Compared with related technologies, the special machine tool for processing train bolsters provided by this utility model has the following beneficial effects:

[0023] 1. In this utility model, by adding left and right side milling head lifting shafts, side milling head feed shafts, connecting side spindles, side spindle motors, side spindle slides, side spindle gearboxes, and angle-adjustable power heads to the traditional gantry milling machine tool, all machining features of the upper surface and both inclined surfaces can be completed in one clamping. The machine tool worktable moves along the X direction via the servo feed axis X-axis slider, and the spindle assembly moves precisely along the Y and Z directions via the servo feed axis Y-axis and Z-direction sliders. The side milling head assembly performs cutting in conjunction with the Y direction and the lifting direction, thereby effectively avoiding the cumulative errors caused by multiple clamping, improving machining accuracy and positioning reliability, meeting the one-time machining requirements of complex-shaped parts for train bolsters, reducing process complexity and production cycle, and improving production stability.

[0024] 2. In this utility model, the left and right milling heads perform synchronous and symmetrical processing, and together with the spindle assembly, they complete the cutting of the upper surface features, realizing simultaneous processing on both sides. This not only increases the processing efficiency to twice that of traditional single-sided processing, but also effectively counteracts the deflection torque of the tool during the cutting process, ensuring uniform force on the workpiece and avoiding vibration or deformation during processing. The angle-adjustable power head can flexibly adjust the tool angle according to the side slope features of the workpiece, ensuring a smooth and clean side surface. The overall structure maintains the rigidity of the gantry column and the machine tool body casting. The slider is fixed by guide rails and bolts, ensuring processing stability and repeatability accuracy, while reducing the need for manual adjustment and improving the level of automation and production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the rear view portion of this utility model;

[0028] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of the image.

[0029] In the diagram: 1. Main casting; 2. Servo feed axis X-axis; 3. Machine tool table; 4. Servo feed axis Y-axis; 5. Spindle assembly; 6. Servo feed axis Z-axis; 7. Left milling head lifting axis; 8. Right milling head lifting axis; 9. Gantry column; 10. Side milling head feed axis; 11. Connecting side spindle; 12. Side spindle motor; 13. Side spindle slide; 14. Side spindle gearbox; 15. Angle-adjustable power head. Detailed Implementation

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] Example 1

[0033] A preferred embodiment of the special machine tool for processing train bolsters provided by this utility model is as follows: Figures 1 to 4 As shown: A special machining tool for train bolsters includes: a machine tool body casting 1, a servo feed axis X-axis 2, a machine tool worktable 3, a servo feed axis Y-axis 4, a spindle assembly 5, a servo feed axis Z-axis 6, a left milling head lifting axis 7, a right milling head lifting axis 8, a gantry column 9, a side milling head feed axis 10, a connecting side spindle 11, a side spindle motor 12, a side spindle slide 13, a side spindle gearbox 14, and an angle-adjustable power head 15;

[0034] The gantry column 9 is fixedly connected to both sides of the machine tool body casting 1;

[0035] The servo feed axis X-axis 2 is mounted on the slide rail above the machine tool body casting 1, and the machine tool worktable 3 is fixedly mounted on the slider of the servo feed axis X-axis 2.

[0036] Servo feed axis Y-axis 4 is fixed in front of gantry column 9, servo feed axis Z-axis 6 slider is mounted on servo feed axis Y-axis 4 slider, and spindle assembly 5 is fixedly mounted on servo feed axis Z-axis 6 slider;

[0037] The left milling head lifting shaft 7 and the right milling head lifting shaft 8 are installed on the track in front of the gantry column 9. The side milling head feed shaft 10 is fixedly installed on the slider of the right milling head lifting shaft 8. The side spindle slide 13 is fixedly installed on the slider of the side milling head feed shaft 10.

[0038] The connecting side spindle 11 is fixedly installed on the side spindle slide 13, the side spindle motor 12 is fixedly installed at the corresponding position of the side spindle slide 13, and is connected to the input end of the connecting side spindle 11 through the side spindle gearbox 14, and the angle-adjustable power head 15 is fixed at the tapered hole of the connecting side spindle.

[0039] In a further preferred embodiment of this utility model, the machine tool worktable 3 is fixed to the slider of the servo feed axis X-axis 2 by bolts, so that the machine tool worktable 3 can move along the X-axis with the slider and form a linkage with the slider of the servo feed axis Y-axis 4.

[0040] In this embodiment, the machine tool worktable 3, together with the servo feed axis X-axis 2 and the servo feed axis Y-axis 4, achieves precise positioning for machining the upper surface features, while providing a stable platform for the feed of the side milling head, improving machining efficiency and repeatability, and enabling the entire machine tool to complete the machining tasks of the upper surface and side surface in one clamping, avoiding the accumulation of errors caused by multiple clamping.

[0041] In a further preferred embodiment of this utility model, the servo feed axis Y-axis 4 slider is fixedly connected to the gantry column 9 via a guide rail, the servo feed axis Z-axis 6 slider is fixedly connected to the servo feed axis Y-axis 4 slider, and the spindle assembly 5 is fixedly installed on the servo feed axis Z-axis 6 slider, so as to realize the movement of the spindle assembly 5 along the Y-axis and Z-axis.

[0042] In this embodiment, the spindle assembly 5 is moved precisely along the Y and Z axes. When the spindle assembly 5 carries the tool to perform upper surface machining, the servo feed axes X-axis 2, Y-axis 4, and Z-axis 6 operate in conjunction under the control of the CNC system to ensure the accuracy and stability of the machining path. The workpiece is subjected to uniform force during machining, and at the same time, it provides the correct spatial position for subsequent side milling head machining, realizing multi-directional machining in one clamping, improving production efficiency and machining accuracy.

[0043] In a further preferred embodiment of this utility model, the slider of the side milling head feed shaft 10 is fixedly connected to the slider of the right milling head lifting shaft 8 by bolts, and the side spindle slide 13 is fixedly connected to the slider of the side milling head feed shaft 10, so as to realize the side milling head feeds along the Y-axis.

[0044] In this embodiment, the side milling head moves up and down under the guidance of the right milling head lifting shaft 8. The side spindle slide 13 moves with the slider of the side milling head feed shaft 10, so that the angle-adjustable power head 15 carries the tool to accurately cut the side slope of the workpiece. The synchronous movement of the left and right side milling head lifting shafts 8 ensures that the force on both sides of the workpiece is uniform. The side milling head assembly cooperates with the spindle assembly 5 to realize the one-time processing of the upper surface and side features, thereby improving the processing quality and surface finish.

[0045] In a further preferred embodiment of the present invention, the connecting side spindle 11 is fixedly installed on the side spindle slide 13, the side spindle motor 12 is fixed above the side spindle slide 13 and is meshed with the input end of the connecting side spindle 11 through the side spindle gearbox 14, and the angle-adjustable power head 15 is fixed in the tapered hole of the side spindle 11 by bolts.

[0046] In this embodiment, the connecting spindle 11 and the angle-adjustable power head 15 form a complete cutting power chain, ensuring that the cutting tool rotates at a stable speed and the cutting force is uniform when cutting side features. The angle-adjustable power head 15 can flexibly adjust the tool angle according to the shape of the workpiece side, realize the processing of different side features, ensure processing accuracy and surface quality, and reduce the risk of tool deflection and vibration.

[0047] In a further preferred embodiment of this utility model, the left milling head lifting shaft 7 and the right milling head lifting shaft 8 are fixed to the track in front of the gantry column 9 by bolts, so as to realize the movement of the side milling head along the lifting direction.

[0048] In this embodiment, the lifting axis provides rigid support and guidance for the side milling head, ensuring that the side milling head moves stably in the vertical direction during processing. The synchronous lifting of the left and right milling heads ensures that both sides of the workpiece are subjected to force at the same time, offsetting the cutting deflection torque, improving processing stability and surface finish. At the same time, the side milling head is linked with the servo feed axes X-axis 2 and Y-axis to realize the processing of the upper surface and side features in one clamping, improving production efficiency and processing accuracy.

[0049] Example 2

[0050] Based on Embodiment 1, a preferred embodiment of the special machine tool for processing train bolsters provided by this utility model is as follows: Figures 1 to 2 As shown: the servo feed axes X-axis 2, Y-axis 4, Z-axis 6, and the lifting axes of the left and right milling heads and the side milling head feed axis 10 are connected to the machine tool CNC system through a linkage mechanism to realize one-time machining of the upper surface and side features.

[0051] In this embodiment, the upper surface and side features are machined in one go. The CNC system coordinates the movement of each feed axis and slide to achieve synchronous cutting operation between the spindle assembly 5 and the side milling head, ensuring accurate tool path, high machining efficiency, and reliable workpiece positioning. At the same time, it reduces the number of clamping operations and cumulative errors, enabling the machine tool to efficiently complete multi-directional machining tasks of complex train bolster parts.

[0052] In a further preferred embodiment of this utility model, the machine tool body casting 1 and the gantry column 9 are fixed by bolts to ensure the rigidity of the machine tool structure and machining accuracy.

[0053] In this embodiment, the casting and column form a stable bearing platform, providing rigid support for the servo feed axis, spindle assembly 5 and side milling head assembly, reducing machining vibration, improving tool cutting accuracy, and ensuring that the tool structure does not deform during high-speed cutting and simultaneous machining of multiple tools, thereby maintaining workpiece dimensional stability and surface quality, and ensuring the reliability of completing multi-feature machining in one clamping.

[0054] In a further preferred embodiment of this utility model, the sliders of the machine tool worktable 3, the spindle assembly 5, and the side milling head assembly are fixedly connected by guide rails and bolts, so as to complete all machining features in one clamping.

[0055] In this embodiment, the guide rail ensures the smoothness and accuracy of the slider movement, the bolt fixing ensures the stability of the overall structure, and the spindle assembly 5, the side milling head slider and the machine tool worktable 3 form a collaborative processing platform, which enables the tool to be accurately positioned and evenly stressed during the processing of the upper surface and the side slope, avoids deviations during processing, improves processing efficiency and repeatability, and is suitable for the mass production needs of train bolsters.

[0056] In a further preferred embodiment of this utility model, the angle-adjustable power head 15 can adjust the tool angle according to the side slope machining requirements to achieve machining of different side features.

[0057] In this embodiment, precise cutting of side features is achieved, ensuring the surface finish and dimensional accuracy of the machined surface. At the same time, the angle-adjustable power head 15 is linked with the side spindle and the side milling head feed axis 10 to improve the efficiency and stability of side machining, enabling the machine tool to complete the machining of complex features in multiple directions in one setup.

[0058] In summary, the train bolster workpiece is first fixed on the machine tool worktable 3. The machine tool worktable 3 is mounted on the slide rail above the machine tool body casting 1 via the slider of the servo feed axis X-axis 2, realizing translational movement along the X-axis. The gantry column 9 is fixedly connected to both sides of the machine tool body casting 1, forming the main load-bearing structure of the machine tool, providing a stable mounting platform for the servo feed axis Y-axis 4, servo feed axis Z-axis 6 and side milling head assembly. The servo feed axis Y-axis 4 is fixed in front of the gantry column 9, and drives the slider of the servo feed axis Z-axis 6 to move via the slider. The spindle assembly 5 is fixedly mounted on the slider of the servo feed axis Z-axis 6, realizing the lifting and lowering movement of the spindle assembly 5 in the Y-axis and Z-axis, thereby completing the machining of various features on the upper surface of the workpiece. During the machining process, the spindle assembly 5 carries the tool and moves precisely along the Y-axis and Z-axis, completing the machining of all features on the upper surface of the train bolster according to the preset machining program under the control of the machine tool CNC system.

[0059] After the upper surface of the spindle assembly 5 is machined, the left milling head lifting shaft 7 and the right milling head lifting shaft 8, guided by the lifting slider of the track in front of the gantry column 9, respectively drive the left and right side milling head assemblies to perform lifting and lowering actions. The right milling head assembly is fixedly mounted on the slider of the right milling head lifting shaft 8 via the side milling head feed shaft 10. The side spindle slide 13 is fixed on the slider of the side milling head feed shaft 10, and the side spindle 11 is fixedly mounted on the side spindle slide 13. The side spindle motor 12 is installed at the corresponding position on the side spindle slide 13. The side spindle gearbox 14 is connected to the input end of the connecting side spindle 11. The angle-adjustable power head 15 is installed in the tapered hole of the connecting side spindle 11 and is used to install the cutting tool and adjust the cutting angle according to the side slope characteristics of the workpiece. The left milling head and the right milling head are symmetrical in structure. The left milling head lifting shaft 7 and the right milling head lifting shaft 8 are linked to enable the two milling heads to process both sides of the workpiece at the same time, thereby doubling the processing efficiency and offsetting the deflection torque generated by the milling cutter during the cutting process, ensuring that the tool is subjected to uniform force and the tool marks on the side are smoother.

[0060] During the machining process, the servo feed axis X-axis 2 drives the machine tool table 3 to move along the X-axis to the predetermined position. At the same time, the left and right side milling head lifting axes 8 and the side milling head feed axis 10 move synchronously according to the CNC program, so that the side spindle slide 13 and the angle-adjustable power head 15 on it can machine the side slope of the workpiece along the Y-axis. The machine tool CNC system controls the linkage between the servo feed axis X-axis 2, servo feed axis Y-axis 4, servo feed axis Z-axis 6 and the left and right side milling head lifting axes 8 and the side milling head feed axis 10, so as to realize the one-time machining of the upper surface and side features, avoiding the cumulative error caused by traditional multiple clamping. During the entire machining process, the machine tool body casting 1 and the gantry column 9 ensure the rigidity and stability of the machine tool structure. The sliders of the spindle assembly 5 and the side milling head assembly are fixedly connected by guide rails and bolts to ensure that the workpiece is accurately positioned and evenly stressed during the machining process.

[0061] Based on the above working principle, this machine tool can complete all machining features of the upper surface and two inclined surfaces of the train bolster in one clamping. The left and right milling heads work together simultaneously to double the machining efficiency while ensuring machining accuracy and surface quality. The machine tool structure retains the functions of a traditional gantry milling machine tool and adds a special side milling head assembly. It can not only be used for special machining of train bolsters, but also be used as a standard gantry milling machine tool for general machining applications, thereby reducing the cost of machine tool modification and usage risks, and meeting the production needs of high precision and high efficiency.

[0062] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0063] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0064] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A special machine tool for processing train bolsters, characterized in that, include: Machine tool body casting (1), servo feed axis X axis (2), machine tool worktable (3), servo feed axis Y axis (4), spindle assembly (5), servo feed axis Z axis (6), left milling head lifting axis (7), right milling head lifting axis (8), gantry column (9), side milling head feed axis (10), connecting side spindle (11), side spindle motor (12), side spindle slide (13), side spindle gearbox (14), angle adjustable power head (15); The gantry column (9) is fixedly connected to both sides of the machine tool body casting (1); The servo feed axis X-axis (2) is mounted on the slide rail above the machine tool body casting (1), and the machine tool worktable (3) is fixedly mounted on the slider of the servo feed axis X-axis (2); The servo feed axis Y-axis (4) is fixed in front of the gantry column (9), the servo feed axis Z-axis (6) slider is mounted on the servo feed axis Y-axis (4) slider, and the spindle assembly (5) is fixedly mounted on the servo feed axis Z-axis (6) slider; The left milling head lifting shaft (7) and the right milling head lifting shaft (8) are installed on the track in front of the gantry column (9), the side milling head feed shaft (10) is fixedly installed on the slider of the right milling head lifting shaft (8), and the side spindle slide (13) is fixedly installed on the slider of the side milling head feed shaft (10). The connecting side spindle (11) is fixedly installed on the side spindle slide (13), the side spindle motor (12) is fixedly installed at the corresponding position of the side spindle slide (13), and is connected to the input end of the connecting side spindle (11) through the side spindle gearbox (14), and the angle adjustable power head (15) is fixed at the tapered hole of the connecting side spindle (11).

2. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The machine tool worktable (3) is fixed to the slider of the servo feed axis X-axis (2) by bolts, so that the machine tool worktable (3) can move along the X-axis with the slider and form a linkage with the slider of the servo feed axis Y-axis (4).

3. The special machine tool for processing train bolsters as described in claim 2, characterized in that: The servo feed axis Y-axis (4) slider is fixedly connected to the gantry column (9) via a guide rail, the servo feed axis Z-axis (6) slider is fixedly connected to the servo feed axis Y-axis (4) slider, and the spindle assembly (5) is fixedly installed on the servo feed axis Z-axis (6) slider, so that the spindle assembly (5) can move along the Y-axis and Z-axis.

4. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The slider of the side milling head feed shaft (10) is fixedly connected to the slider of the right milling head lifting shaft (8) by bolts, and the side spindle slide (13) is fixedly connected to the slider of the side milling head feed shaft (10) to realize the side milling head feed along the Y-axis.

5. The special machine tool for processing train bolsters as described in claim 4, characterized in that: The connecting side spindle (11) is fixedly installed on the side spindle slide (13), the side spindle motor (12) is fixed above the side spindle slide (13), and is meshed with the side spindle input end through the side spindle gearbox (14). The angle-adjustable power head (15) is fixed in the tapered hole of the connecting side spindle (11) by bolts.

6. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The left milling head lifting shaft (7) and the right milling head lifting shaft (8) are fixed to the track in front of the gantry column (9) by bolts, so that the side milling head can move along the lifting direction.

7. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The servo feed axes X-axis (2), Y-axis (4), Z-axis (6), and the lifting axes of the left and right milling heads and the side milling head feed axis (10) are connected to the CNC system of the machine tool through a linkage mechanism to realize one-time machining of the upper surface and side features.

8. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The machine tool body casting (1) is fixed to the gantry column (9) by bolts to ensure the rigidity of the machine tool structure and the machining accuracy.

9. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The slide blocks of the machine tool worktable (3), spindle assembly (5) and side milling head assembly are fixedly connected by guide rails and bolts, so that all machining features can be completed in one clamping.

10. The special machine tool for processing train bolsters as described in claim 1, characterized in that: The angle-adjustable power head (15) can adjust the tool angle according to the side slope machining requirements to achieve machining of different side features.

Images