Gantry machining center

Abstract

The utility model discloses a gantry machining center, which belongs to the technical field of gantry machining centers and comprises a base suitable for being fixed on the ground. The portal frame is connected with the base and / or the ground and comprises a cross beam extending in the width direction, and a first matching part is arranged on the cross beam; the milling cutter assembly is suitable for machining parts and comprises a guide part, the guide part is arranged around at least part of the periphery of the cross beam, the guide part is provided with a second matching part, and the second matching part is movably matched with the first matching part in the width direction. According to the gantry machining center designed by the utility model, the guide part surrounds the cross beam and is matched with a plurality of surfaces, so that the milling cutter assembly is kept highly stable in the whole moving process, errors caused by vibration or uneven stress are reduced, and the problems that the center of gravity is possibly shifted and the machining accuracy is high due to the traditional single-side guide are effectively solved. The moving stability of the milling cutter assembly in the machining process is guaranteed, and the machining precision is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of gantry machining centers, specifically relating to gantry machining centers. Background Technology

[0002] In related technologies, gantry machining centers typically include a fixed base, columns erected on both sides of the base, and a crossbeam connecting the tops of the two columns. The milling cutter assembly is mounted on the crossbeam and can move in the width direction (i.e., the direction in which the crossbeam extends) to perform multi-angle machining on the workpiece fixed on the base. In existing technologies, the cooperation between the milling cutter assembly and the crossbeam is relatively simple, usually achieved by moving only through a single-sided guide rail or slider. This leads to the milling cutter assembly being prone to vibration or displacement during heavy-load or high-speed machining, affecting machining accuracy. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a gantry machining center.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a gantry machining center, comprising: a base adapted to be fixed to the ground; a gantry frame connected to the base and / or the ground, the gantry frame including a crossbeam extending in the width direction, the crossbeam having a first mating portion extending in the width direction; and a milling cutter assembly adapted to machine parts, the milling cutter assembly including a guide portion surrounding at least a portion of the outer periphery of the crossbeam, the guide portion having a second mating portion that movably engages with the first mating portion in the width direction.

[0006] According to this utility model, the gantry machining center, due to the guide portion surrounding the crossbeam and the cooperation of multiple surfaces, ensures that the milling cutter assembly remains highly stable throughout the entire movement process, reducing errors caused by vibration or uneven force. Moreover, the multi-faceted contact design between the guide portion and the crossbeam effectively solves the problem of center of gravity shift that may occur with traditional single-sided guidance, ensuring the smooth movement of the milling cutter assembly during machining. The stable movement performance and precise guidance system directly improve machining accuracy, which is very important for applications requiring high-precision machining. Of course, the more stable movement of the milling cutter assembly means that it can support higher feed rates and cutting speeds, while reducing the need for downtime maintenance of the gantry machining center, thus improving production efficiency and the working reliability of the gantry machining center.

[0007] Furthermore, the milling cutter assembly includes: a first connector, the first connector being configured as the guide portion, the first connector having a mating groove opening towards the crossbeam, the inner wall of the mating groove being provided with a second mating portion; a second connector, the second connector being movably connected to the first connector, the second connector being movable relative to the first connector in the height direction; and a cutting tool, the cutting tool being disposed on the second connector; wherein the base is provided with a mounting seat that can be selectively moved in the length direction, the mounting seat being adapted to fix the part.

[0008] Furthermore, at least one inner wall of the mating groove is provided with a second mating part, and the crossbeam is provided with a first mating part that corresponds one-to-one with the second mating part.

[0009] Furthermore, the first connecting member includes: a first plate extending in the length direction and located above the crossbeam; a second plate connected to one side of the first plate in the length direction and located on the side of the crossbeam away from the cutter; and a third plate connected to the other side of the first plate in the length direction and located on the side of the crossbeam closer to the cutter; wherein the first plate, the second plate, and the third plate are all provided with the second mating part.

[0010] Furthermore, the second plate and the crossbeam are spaced apart in the width direction, and a first installation space is formed between the second plate and the crossbeam; and / or, the third plate and the crossbeam are spaced apart in the width direction, and a second installation space is formed between the third plate and the crossbeam; wherein the first installation space and / or the second installation space are provided with a driving member, the driving member is connected to the crossbeam, the driving end of the driving member is adapted to connect with the second plate and / or the third plate, and the driving member is adapted to drive the first connecting member to move in the width direction.

[0011] Furthermore, the driving component is constructed as a rotary motor, the driving end of the rotary motor is provided with a connecting shaft, the outer peripheral wall of the connecting shaft is provided with a first thread, the third plate is provided with a mating block, the mating block is provided with a mating hole, the mating block is sleeved on the outer periphery of the connecting shaft through the mating hole, and the inner peripheral wall of the mating hole is provided with a second thread that mates with the first thread.

[0012] Furthermore, the first mating part is constructed as a guide rail extending in the width direction, and the second mating part is constructed as a slider that slides in conjunction with the guide rail.

[0013] Furthermore, the gantry frame also includes: uprights, wherein the uprights are constructed as two extending in the height direction, and the two uprights are respectively disposed on both sides of the base in the width direction; wherein the two ends of the crossbeam are respectively connected to the top of the two uprights.

[0014] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0016] Figure 1 This is a schematic diagram of the gantry machining center of this utility model;

[0017] Figure 2 This is a schematic diagram showing the interaction between the rotating motor and the crossbeam of this utility model;

[0018] Figure 3 for Figure 2 The enlarged view of A is shown in the center circle.

[0019] The following labels are shown in the attached diagram:

[0020] 1. Gantry machining center;

[0021] 10. Base; 11. Mounting bracket;

[0022] 20. Gantry frame; 21. Crossbeam; 211. Guide rail; 22. Column;

[0023] 31. First connecting piece; 311. First plate; 312. Second plate; 313. Third plate; 3131. Mating block; 32. Second connecting piece; 33. Cutting tool;

[0024] 41. Rotate the motor; 42. Connect the shaft. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other instances, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the present invention.

[0027] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0029] Example 1:

[0030] like Figures 1-3 As shown, this utility model provides a gantry machining center 1, including: a base 10, a gantry frame 20, and a milling cutter assembly. The base 10 is adapted to be fixed to the ground, and the gantry frame 20 is connected to the base 10 and / or the ground. The gantry frame 20 includes a crossbeam 21 extending in the width direction. A first mating part extending in the width direction is provided on the crossbeam 21. The milling cutter assembly is adapted to process parts. The milling cutter assembly includes a guide part, which is arranged around at least a portion of the outer periphery of the crossbeam 21. The guide part is provided with a second mating part, which is movably mated with the first mating part in the width direction.

[0031] In some embodiments, the base 10 is used to fix the entire gantry machining center 1 to the ground, providing a stable foundation. The gantry frame 20 is the main frame structure of the gantry machining center 1. The gantry frame 20 supports the entire equipment by being connected to the base 10 or directly connected to the ground. The gantry frame 20 includes a crossbeam 21 extending in the width direction. A first mating part (such as a guide rail 211) is provided on the crossbeam 21, which also extends in the width direction. A milling cutter assembly is the part used to perform the actual machining operation. The milling cutter assembly includes a guide part that surrounds at least a portion of the outer periphery of the crossbeam 21. A second mating part (such as a slider) is provided on the guide part. The second mating part can be movably engaged with the first mating part on the crossbeam 21 in the width direction.

[0032] Understandably, by designing the guide portion of the milling cutter assembly to surround part of the crossbeam 21 and mounting a second mating portion on the milling cutter assembly, the precise movement of the milling cutter assembly relative to the crossbeam 21 in the width direction can be achieved through the tight engagement between the first and second mating portions. Since the guide portion covers at least a portion of the outer periphery of the crossbeam 21, the crossbeam 21 can act as a kind of limiting post on the guide portion, allowing the guide portion to move stably along the extension direction of the crossbeam 21. Simultaneously, the outer peripheral wall of the crossbeam 21 can restrict the guide portion, increasing the contact area between the crossbeam 21 and the milling cutter assembly, thereby providing a more uniform load distribution and enhancing the stability of the system.

[0033] According to the present invention, the gantry machining center 1, due to the guide portion surrounding the crossbeam 21 and having multiple surfaces in contact, ensures that the milling cutter assembly remains highly stable throughout the entire movement process, reducing errors caused by vibration or uneven force. Moreover, the multi-faceted contact design between the guide portion and the crossbeam 21 effectively solves the problem that traditional single-sided guidance may cause the center of gravity to shift, ensuring the smooth movement of the milling cutter assembly during machining. Stable movement performance and a precise guiding system directly improve machining accuracy, which is very important for applications requiring high-precision machining. Of course, more stable movement of the milling cutter assembly means that it can support higher feed rates and cutting speeds, while reducing the need for downtime maintenance of the gantry machining center 1, improving production efficiency and the working reliability of the gantry machining center 1.

[0034] Example 2:

[0035] Based on Embodiment 1, the milling cutter assembly in this embodiment includes: a first connecting member 31, a second connecting member 32, and a cutting tool 33. The first connecting member 31 is configured as a guide portion and is provided with a mating groove that opens toward the crossbeam 21. At least a portion of the crossbeam 21 is located in the mating groove, and a second mating portion is provided on the inner wall of the mating groove. The second connecting member 32 is movably connected to the first connecting member 31 and can move relative to the first connecting member 31 in the height direction. The cutting tool 33 is disposed on the second connecting member 32. The base 10 is provided with a mounting seat 11 that can be selectively moved in the length direction and is suitable for fixing parts.

[0036] In some embodiments, the first connector 31 is configured as the guide portion, and the first connector 31 is provided with a mating groove that opens toward the crossbeam 21. A second mating portion (e.g., a slider) is provided on the inner wall of the mating groove. The second mating portion is used to move and engage with the first mating portion (e.g., guide rail 211) on the crossbeam 21 in the width direction.

[0037] The second connector 32 and the first connector 31 are movably connected by some means (such as guide rail 211 and slider or lead screw nut pair) to allow the second connector 32 to move in the height direction relative to the first connector 31. The tool 33 is fixed on the second connector 32 to move with the second connector 32, thereby enabling the tool 33 to be positioned and processed in the height direction. The base 10 is provided with a mounting seat 11 that can move in the length direction. The base 10 is used to fix the workpiece to be processed, which allows the workpiece to be processed to be adjusted in position along the length direction of the machine tool as needed for precise processing.

[0038] It is understandable that, through the above structural design, the tool 33 can not only move along the crossbeam 21 in the width direction, but also be adjusted in the height direction. Combined with the length direction movable mounting seat 11 on the base 10, the whole system provides flexible machining capabilities in three-dimensional space.

[0039] According to some embodiments of the present invention, at least one inner wall of the mating groove is provided with a second mating part, and the crossbeam 21 is provided with a first mating part that corresponds one-to-one with the second mating part.

[0040] It is understandable that by setting a second mating part on one or more inner walls of the mating groove and setting a first mating part at a corresponding position on the crossbeam 21, multi-point contact between the first connecting piece 31 and the crossbeam 21 is achieved. Multi-point contact not only increases the contact area but also distributes the load, improves the stability and accuracy of the milling cutter assembly, extends the service life of the milling cutter assembly, and reduces maintenance costs.

[0041] The one-to-one matching design ensures that the milling cutter assembly can be precisely aligned and moved in the width direction. Each set of first and second matching parts constitutes an independent guiding system, which ensures the straightness and flatness of the milling cutter assembly during movement, reduces the risk of vibration and offset, and thus improves the machining quality.

[0042] According to some embodiments of the present invention, the first connecting member 31 includes: a first plate 311, a second plate 312, and a third plate 313. The first plate 311 extends in the length direction and is located above the crossbeam 21. The second plate 312 is connected to one side of the first plate 311 in the length direction and is located on the side of the crossbeam 21 away from the cutter 33. The third plate 313 is connected to the other side of the first plate 311 in the length direction and is located on the side of the crossbeam 21 close to the cutter 33. The first plate 311, the second plate 312, and the third plate 313 are all provided with a second mating part.

[0043] In some embodiments, the first plate 311, the second plate 312, and the third plate 313 are each provided with a second mating part, and the multiple second mating parts correspond one-to-one with the first mating parts on the crossbeam 21, so as to realize the stable movement of the milling cutter assembly in the width direction.

[0044] It is understandable that by setting the second mating parts on the first plate 311, the second plate 312, and the third plate 313, multi-point support and guidance of the first connecting piece 31 and the crossbeam 21 are achieved, which not only increases the contact area but also disperses the load and improves the overall stability and accuracy of the system.

[0045] The first plate 311, the second plate 312, and the third plate 313 provide support at different positions, which allows the load to be distributed more evenly on the crossbeam 21, avoiding the problem of single-point overload and thus extending the service life of the equipment. Of course, since the second mating parts on the first plate 311, the second plate 312, and the third plate 313 correspond one-to-one with the first mating parts on the crossbeam 21, the ability of the first connecting member 31 to resist the displacement caused by external force or gravity is enhanced.

[0046] Example 3:

[0047] Based on Embodiment 2, in this embodiment, the second plate 312 and the crossbeam 21 are spaced apart in the width direction, and a first installation space is formed between the second plate 312 and the crossbeam 21, and / or, the third plate 313 and the crossbeam 21 are spaced apart in the width direction, and a second installation space is formed between the third plate 313 and the crossbeam 21; wherein the first installation space and / or the second installation space are provided with a driving member, the driving member is connected to the crossbeam 21, the driving end of the driving member is adapted to connect with the second plate 312 and / or the third plate 313, and the driving member is adapted to drive the first connecting member 31 to move in the width direction.

[0048] In some embodiments, the second plate 312 and the crossbeam 21 are spaced apart in the width direction, and a first mounting space is formed between the second plate 312 and the crossbeam 21. A driving member is provided in the first mounting space. The driving member is connected to the crossbeam 21, and the driving end of the driving member is adapted to be connected to the second plate 312. The driving member works to drive the second plate 312 to move in the width direction, thereby driving the first connecting member 31 to move in the width direction.

[0049] In other embodiments, the third plate 313 and the crossbeam 21 are spaced apart in the width direction, and a second mounting space is formed between the third plate 313 and the crossbeam 21. A driving member is provided in the second mounting space. The driving member is connected to the crossbeam 21, and the driving end of the driving member is adapted to connect with the third plate 313. The driving member works to drive the third plate 313 to move in the width direction, thereby driving the first connecting member 31 to move in the width direction.

[0050] In some other embodiments, the second plate 312 and the crossbeam 21 are spaced apart in the width direction, and a first mounting space is formed between the second plate 312 and the crossbeam 21. A driving member is provided in the first mounting space and is connected to the crossbeam 21. The driving end of the driving member is adapted to be connected to the second plate 312. The third plate 313 and the crossbeam 21 are spaced apart in the width direction, and a second mounting space is formed between the third plate 313 and the crossbeam 21. A driving member is also provided in the second mounting space and is connected to the crossbeam 21. Thus, the two driving members work simultaneously to drive the second plate 312 or the third plate 313 to move in the width direction, thereby realizing the movement of the first connecting member 31 in the width direction.

[0051] According to some embodiments of the present invention, the driving component is a rotating motor 41, the driving end of the rotating motor 41 is provided with a connecting shaft 42, the outer peripheral wall of the connecting shaft 42 is provided with a first thread, the third plate 313 is provided with a mating block 3131, the mating block 3131 is provided with a mating hole, the mating block 3131 is sleeved on the outer periphery of the connecting shaft 42 through the mating hole, and the inner peripheral wall of the mating hole is provided with a second thread that mates with the first thread.

[0052] In some embodiments, the drive component uses a rotary motor 41 as a power source to provide precise and controllable power output. The drive end of the rotary motor 41 is provided with a connecting shaft 42, which extends in the width direction and has a first thread on its outer peripheral wall. A mating block 3131 is provided on the third plate 313. The mating block 3131 has a mating hole inside, and the inner peripheral wall of the mating hole is provided with a second thread. The second thread matches the first thread on the connecting shaft 42. Thus, when the rotary motor 41 rotates, it can drive the mating block 3131 to move linearly along the connecting shaft 42.

[0053] It is understandable that by converting the rotational motion of the rotary motor 41 into the linear motion of the mating block 3131, the precise movement of the first connecting member 31 in the width direction can be achieved. Specifically, when the rotary motor 41 is working, the connecting shaft 42 rotates accordingly. Due to the threaded engagement, the mating block 3131 will move linearly along the connecting shaft 42, thereby driving the entire milling cutter assembly to move in the width direction.

[0054] It is worth mentioning that the threaded fit provides high-precision position control capabilities, enabling micron-level positioning accuracy to improve the machining accuracy of the gantry machining center 1. Moreover, certain types of threads (such as trapezoidal threads or ball screws) have a certain self-locking performance, which can maintain the current position after the rotating motor 41 stops, increasing the stability of the system.

[0055] Example 4:

[0056] Based on Embodiment 1, the first mating part is constructed as a guide rail 211 extending in the width direction, and the second mating part is constructed as a slider that slides with the guide rail 211. In some embodiments, a guide rail 211 extending in the width direction is provided on the crossbeam 21. The guide rail 211 serves as the first mating part and provides a guiding function. A slider that slides with the guide rail 211 on the guide part of the milling cutter assembly serves as the second mating part. The slider is mounted on the guide rail 211, and the movement of the milling cutter assembly in the width direction is achieved by sliding the slider.

[0057] According to some embodiments of the present invention, the gantry frame 20 further includes: columns 22, which are constructed as two columns extending in the height direction, and the two columns 22 are respectively disposed on both sides of the base 10 in the width direction; wherein the two ends of the crossbeam 21 are respectively connected to the top of the two columns 22.

[0058] In some embodiments, the gantry 20 includes two columns 22, both of which extend in the height direction and are respectively disposed on both sides of the base 10 in the width direction. The main function of the columns 22 is to support the entire structure of the gantry 20 and ensure the stability and rigidity of the gantry 20. The two ends of the crossbeam 21 are respectively connected to the top of the two columns 22, ensuring the stability of the crossbeam 21 in the entire width direction and providing sufficient support force to support the milling cutter assembly and other related components.

[0059] Understandably, the two columns 22 and the crossbeam 21 together form a stable frame structure, providing the necessary mechanical support for the gantry machining center 1. The height of the columns 22 determines the working space of the machine tool, while the strength and rigidity of the columns 22 directly affect the machining accuracy and stability. By fixing the two ends of the crossbeam 21 to the two columns 22 respectively, the load can be effectively distributed to the two support points, reducing the risk of single-point overload, improving the overall load-bearing capacity of the system, and enhancing the ability of the gantry 20 to resist deformation caused by external forces (such as cutting forces), thus maintaining high precision during the machining process.

[0060] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A gantry machining center characterized by, The application relates to a milling machine, comprising: a base adapted to be fixed to the ground; a portal frame connected with the base and / or the ground, the portal frame comprising a cross beam extending in a width direction, the cross beam being provided with first matching parts extending in the width direction; a milling cutter assembly adapted to machine a part, the milling cutter assembly comprising a guide part arranged around at least a part of the outer periphery of the cross beam, the guide part being provided with second matching parts movably matched with the first matching parts in the width direction.

2. The gantry machining center according to claim 1, characterized in that, The milling cutter assembly comprises: a first connecting piece configured as the guide part, the first connecting piece being provided with a matching groove open towards the cross beam, the inner wall of the matching groove being provided with the second matching parts; a second connecting piece movably connected with the first connecting piece, the second connecting piece being movable relative to the first connecting piece in a height direction; a cutter provided on the second connecting piece; wherein the base is provided with a mounting seat selectively movable in a length direction, the mounting seat being adapted to fix a part.

3. The gantry machining center according to claim 2, characterized in that, At least one inner wall of the matching groove is provided with the second matching parts, and the cross beam is provided with first matching parts corresponding to the second matching parts one by one.

4. The gantry machining center according to claim 3, characterized in that, The first connecting piece comprises: a first plate body extending in a length direction, the first plate body being located above the cross beam; a second plate body connected to one side of the first plate body in the length direction, the second plate body being located on a side of the cross beam away from the cutter; a third plate body connected to the other side of the first plate body in the length direction, the third plate body being located on a side of the cross beam close to the cutter; wherein the first plate body, the second plate body and the third plate body are all provided with the second matching parts.

5. The gantry machining center according to claim 4, characterized in that, The second plate body is spaced apart from the cross beam in the width direction, and a first mounting space is formed between the second plate body and the cross beam, and / or the third plate body is spaced apart from the cross beam in the width direction, and a second mounting space is formed between the third plate body and the cross beam; wherein the first mounting space and / or the second mounting space are provided with a driving piece connected with the cross beam, a driving end of the driving piece being adapted to be connected with the second plate body and / or the third plate body, the driving piece being adapted to drive the first connecting piece to move in the width direction.

6. The gantry machining center according to claim 5, characterized in that The driving piece is configured as a rotating motor, a connecting shaft of the rotating motor being provided with a first thread on the outer peripheral wall, the third plate body being provided with a matching block, the matching block being provided with a matching hole, the matching block being sleeved on the outer periphery of the connecting shaft through the matching hole, and the inner peripheral wall of the matching hole being provided with a second thread matched with the first thread.

7. The gantry machining center according to claim 1, characterized in that, The first matching parts are configured as guide rails extending in the width direction, and the second matching parts are configured as sliding blocks slidably matched with the guide rails.

8. The gantry machining center according to claim 1, characterized in that, The portal frame further comprises: two upright columns extending in the height direction, the two upright columns being respectively arranged on both sides of the base in the width direction; wherein Two ends of the crossbeam are connected with the top of two columns respectively.

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