Crown block five-axis gantry machining center

Abstract

The invention relates to a crown block five-axis gantry machining center, and relates to the technical field of shaft machining centers, the machining center comprises a machine body, two cross beams, a base and a tool apron, mounting holes are formed in the two cross beams, and the base is slidably mounted on the mounting holes and the two cross beams through a sliding mechanism and a supporting mechanism; the two sliding mechanisms are located on the two opposite side walls of the mounting hole, each sliding mechanism comprises a first sliding plate and a second sliding plate, and the first sliding plates and the second sliding plates are arranged on the base and the mounting hole correspondingly and abut against each other for positioning; and the sliding buckling assemblies are arranged on the base and the mounting holes and are in mutual buckling and sliding connection. The two cross beams are connected with each other, the middle positions of the two cross beams are matched to form the mounting hole, the base is slidably arranged on the mounting hole through the sliding mechanism, and the base is slidably arranged on the two cross beams through the supporting mechanism, so that the acting force on the two cross beams and the mounting hole is balanced when the base slides, and the machining precision of a machine tool is improved.

Description

Technical Field

[0001] This application relates to the technical field of five-axis machining centers, and in particular, to an overhead crane five-axis gantry machining center. Background Art

[0002] Five-axis machining centers, which can be used to machine many complex, special and critical parts with complex profiles, have become key basic equipment for the rapid research and development of the equipment manufacturing industry and advanced national defense weaponry products.

[0003] A five-axis gantry machining center generally includes a machine body, a crossbeam, a base, and a tool holder. The crossbeam slides horizontally on the machine body. The base includes a sliding part that slides horizontally on the crossbeam and an installation part that extends vertically downward to one side of the crossbeam and is in a vertical state. The moving direction of the sliding part is perpendicular to that of the crossbeam, and the tool holder slides vertically on the installation part.

[0004] The installation part extends to one side of the crossbeam, and the tool holder and its driving structure for driving the tool holder are located on the installation part. As a result, the acting force between the sliding part and the crossbeam is not balanced enough. Over time, the connection between the base and the crossbeam is deformed, reducing the machining accuracy of the machine tool. Summary of the Invention

[0005] In order to reduce the risk of deformation at the connection between the base and the crossbeam and improve the machining accuracy of the machine tool, this application provides an overhead crane five-axis gantry machining center.

[0006] An overhead crane five-axis gantry machining center provided by this application adopts the following technical solutions: An overhead crane five-axis gantry machining center includes a machine body, two crossbeams, a base, and a tool holder. The two crossbeams are connected to each other, and an installation hole is formed in the middle position. The base is slidably installed in the installation hole and on the two crossbeams through a sliding mechanism and a support mechanism respectively, and passes through the installation hole and extends below the crossbeam. The tool holder is slidably arranged vertically on the base; There are two sliding mechanisms, which are located on the opposite side walls of the installation hole. The sliding mechanism includes: A first sliding plate and a second sliding plate are respectively arranged on the base and the installation hole, and a plurality of them are correspondingly arranged and abutted against each other for positioning; A sliding buckling component is arranged on the base and the installation hole and is buckled and slidably connected to each other. At least two sliding buckling components are arranged, so that the first sliding plate and the second sliding plate are located between two adjacent sliding buckling components.

[0007] By adopting the above technical solution, the two crossbeams are connected to each other and cooperate at the middle position to form a mounting hole. At the same time, the base is slidably arranged on the mounting hole through a sliding mechanism, and the base is slidably arranged on the two crossbeams through a supporting mechanism, so that the acting forces of the base on the two crossbeams and the mounting hole are balanced when the base slides, reducing the risk of deformation at the connection between the base and the crossbeams, improving the stability of the base and the tool holder during movement, and improving the machining accuracy of the machine tool.

[0008] The base and the crossbeam are slidably buckled with each other through a sliding buckling component, so that the base and the mounting hole slide and buckle with each other, and the base slides on the opposite side walls of the mounting hole, thereby enabling the sliding of the base to be limited in multiple directions. At the same time, the first support plate and the second support plate abut against each other for support and positioning, enabling the sliding of the base to be supported and positioned. The sliding buckling component can limit in multiple directions, making the sliding direction of the base more accurate. However, due to the multiple-direction limitation, the frictional force is large, that is, the resistance to the sliding of the base is large. And the mutual abutment of the first support plate and the second support plate can reduce the resistance when the base slides, but it can only limit the base in one direction. Therefore, through the mutual cooperation of the sliding buckling component, the first support plate and the second support plate, the accuracy of the sliding direction of the base can be improved while reducing the resistance when the base slides, further improving the machining accuracy of the machine tool and reducing the energy consumption during machine tool machining.

[0009] Optionally, the sliding buckling component includes: The first buckling plate and the second buckling plate are respectively arranged on the base and the mounting hole. Buckling grooves one are formed on the opposite side walls of the second buckling plate, and a buckling groove two is formed on the first buckling plate. The buckling groove two is buckled and slid on the end of the second buckling plate away from the mounting hole and the two buckling grooves one.

[0010] By adopting the above technical solution, the buckling groove one and the buckling groove two cooperate with each other, enabling the base and the mounting hole to be slidably connected, and also enabling the base and the mounting hole to be buckled with each other, capable of supporting and limiting the base in multiple sliding directions, improving the accuracy and strength of the base during sliding, and improving the machining accuracy of the machine tool.

[0011] Optionally, two support mechanisms are provided and are located on the two crossbeams. The support mechanism includes: The first support plate and the second support plate are respectively arranged on the base and the crossbeam. Support grooves one are formed on the opposite side walls of the second support plate, and a support groove two is formed on the first support plate. The support groove two is buckled and slid on the end of the second support plate away from the crossbeam and the two support grooves one.

[0012] By adopting the above technical solution, the first support groove and the second support groove cooperate with each other to realize the sliding connection between the base and the cross beam, and can also realize the snap connection between the base and the cross beam, which can limit the base in multiple sliding directions, improve the accuracy of the base during sliding, and improve the machining accuracy of the machine tool.

[0013] Optionally, the second support groove includes a first lubricating surface, a second lubricating surface, and a third lubricating surface that are respectively in contact with the opposite side walls of the two first support grooves, the second support plate, and the top of the second support plate. The length directions of the first lubricating surface, the second lubricating surface, and the third lubricating surface are parallel to the sliding direction of the base and are provided with a plurality of lubricating grooves that penetrate the first lubricating surface, the second lubricating surface, and the third lubricating surface along the sliding direction of the base. The plurality of lubricating grooves are interconnected through a plurality of communication grooves. A lubricating mechanism is provided on the base and is communicated with the lubricating grooves and is used for inputting lubricating oil and blocking both ends of the lubricating grooves.

[0014] By adopting the above technical solution, the pressure of the base on the cross beam is concentrated at the connection with the cross beam, resulting in a large pressure between the first support groove and the second support groove, causing significant wear between the first support groove and the second support groove, thereby reducing the machining accuracy of the machine tool and also increasing the energy consumption during the sliding of the base.

[0015] The lubricating mechanism is activated to add lubricating oil into the lubricating grooves. The lubricating oil flows in the lubricating grooves, and at the same time, the lubricating oil liquid enters other lubricating grooves through the communication grooves, so that the lubricating oil fills the plurality of lubricating grooves. The lubricating oil can lubricate the first lubricating surface, the second lubricating surface, and the third lubricating surface. At the same time, the lubricating grooves penetrate the first lubricating surface, the second lubricating surface, and the third lubricating surface, thus greatly increasing the area for adding lubricating oil, further improving the lubrication effect. At the same time, the lubricating mechanism blocks both ends of the lubricating grooves, thereby reducing the risk of lubricating oil leakage from the lubricating grooves. When the base moves, it drives the lubricating grooves and the lubricating oil to move simultaneously, improving the lubrication effect, reducing the consumption of lubricating oil, improving the machining accuracy of the machine tool, and reducing the energy consumption during the machining of the machine tool.

[0016] Optionally, the lubricating mechanism includes: An oil storage tank, which is arranged on a side wall of the support plate through an oil delivery pipe and is filled with lubricating oil. An oil delivery valve for controlling opening and closing is provided on the oil delivery pipe, and the lubricating oil is added into the lubricating grooves and the communication grooves under the action of gravity; A plugging assembly for plugging both ends of the lubricating grooves; An exhaust assembly for exhausting the air in the lubricating grooves and the communication grooves and being electrically connected to the oil delivery valve.

[0017] By adopting the above technical solution, the plugging component is used to plug both ends of the lubricating groove, thereby reducing the risk of lubricating oil leakage. When the oil delivery valve is opened, the lubricating oil in the oil delivery tank enters the lubricating groove and the communication groove through the oil delivery pipe. At the same time, the lubricating oil entering the lubricating groove and the communication groove will push the air located in the lubricating groove and the communication groove to be discharged through the exhaust component, thereby realizing the addition of lubricating oil to the lubricating groove and the communication groove, and at the same time, the air can be discharged, thereby reducing the risk that the lubricating oil cannot be added due to air blockage, enabling the lubricating oil to fill multiple lubricating grooves and communication grooves, further improving the lubrication effect and the machining efficiency of the machine tool.

[0018] Optionally, two plugging components are provided and are located on the opposite side walls of the first support plate. The plugging component includes: A plugging plate, which is detachably arranged on one side wall of the support plate; A sealing ring, which is snap-fitted on the plugging plate and presses against the second support plate for sealing.

[0019] By adopting the above technical solution, the sealing ring presses against the first support plate for plugging. At the same time, when the sealing ring is damaged, the plugging plate can be removed for replacement, further reducing the risk of lubricating oil leakage.

[0020] Optionally, the exhaust component includes: An exhaust pipe, which is arranged on the first support plate and is used to discharge the air in the lubricating groove; A breathable waterproof film, which is arranged on the exhaust pipe and forms an exhaust cavity with the exhaust pipe. The breathable waterproof film is used to allow the air in the lubricating groove to pass through and enter the exhaust cavity and block the lubricating oil from passing through; A pressure relief valve, which is arranged on the exhaust pipe and is communicated with the exhaust cavity. When the air pressure in the exhaust cavity is greater than a specified value, the pressure relief valve opens and discharges the air located in the exhaust cavity; A detection component, which is arranged in the exhaust pipe and is used to detect the lubricating oil pressure and is electrically connected to the oil delivery valve.

[0021] By adopting the above technical solution, the air in the lubricating groove and the communication groove enters the exhaust cavity through the breathable waterproof film, and the lubricating oil is blocked from passing through. When the air pressure in the exhaust cavity reaches the specified pressure, the pressure relief valve opens to discharge the gas in the exhaust cavity. The detection component is located in the detection pipe and is used to detect the pressure of the lubricating oil. When the amount of lubricating oil decreases, the pressure on the detection component decreases. Therefore, the oil delivery valve opens, and the lubricating oil in the oil delivery tank is added, thereby ensuring lubrication when the base moves, improving the lubrication effect, and improving the machining accuracy of the machine tool.

[0022] Optionally, the exhaust pipe is detachably arranged on the base and is convenient for replacing the breathable waterproof film, the detection component and the pressure relief valve.

[0023] By adopting the above technical solution, the exhaust pipe can be detachably installed, so that the inspection piece, the breathable waterproof film and the pressure relief valve can be replaced.

[0024] Optionally, both the cross beam and the base are driven by linear motors.

[0025] Optionally, buffer components for buffering the cross beam and the base are respectively arranged on the machine body and the cross beam. The buffer components include: A buffer rod, slidably arranged on the machine body; An inductor, arranged on the machine body and electrically connected to the linear motor; A spring, sleeved on the buffer rod and connected to the buffer rod and the machine body; when the cross beam moves and pushes the buffer rod to abut against the inductor, the inductor controls the cross beam to stop moving through the linear motor.

[0026] By adopting the above technical solution, during the movement of the cross beam, when it approaches the buffer rod, the cross beam pushes the buffer rod close to the inductor, so that the buffer rod abuts against the inductor. The inductor controls the cross beam to stop moving through the linear motor, and can also buffer the movement of the cross beam. At the same time, the principle of the movement of the base is the same. Thus, the movement of the cross beam and the base can be buffered, the stability during the operation of the machine tool is improved, and the machining accuracy of the machine tool is improved.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The two cross beams are connected to each other and cooperate at the middle position to form a mounting hole. At the same time, the base is slidably arranged on the mounting hole through a sliding mechanism, and the base is slidably arranged on the two cross beams through a supporting mechanism. Thus, when the base slides, the acting forces on the two cross beams and the mounting hole are balanced, the risk of deformation at the connection between the base and the cross beam is reduced, the stability during the movement of the base and the tool holder is improved, and the machining accuracy of the machine tool is improved.

[0028] 2. The base is slidably buckled with the mounting hole and the cross beam through the sliding buckling component and the supporting mechanism. Thus, the sliding of the base can be limited from multiple directions. At the same time, through the cooperation of the sliding buckling component, the first support plate and the second support plate, the accuracy of the sliding direction of the base can be improved and the resistance during the sliding of the base can be reduced. Further, the machining accuracy of the machine tool is improved and the energy consumption during the machining of the machine tool is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the first embodiment of the machining center; Figure 2 is Figure 1 the sectional view taken along line A-A in Figure 3 is Figure 2 the enlarged schematic view of part B in Figure 4 is Figure 3 an enlarged schematic view of part C in Figure 5 is Figure 2 an enlarged schematic view of part D in Figure 6 a schematic structural view of the second embodiment of the machining center; Figure 7 a schematic cross-sectional view of the first support plate and the second support plate in the second embodiment of the machining center; Figure 8 is Figure 6 a schematic cross-sectional view of E-E in Figure 9 is Figure 8 an enlarged schematic view of part F in

[0030] Reference numerals: 1, machine body; 11, cross beam; 12, base; 13, tool holder; 14, mounting hole; 15, first lubricating surface; 16, second lubricating surface; 17, third lubricating surface; 18, lubricating groove; 19, communicating groove; 2, sliding mechanism; 21, first sliding plate; 22, second sliding plate; 3, sliding fastening assembly; 31, first fastening plate; 32, second fastening plate; 33, first fastening groove; 34, second fastening groove; 4, supporting mechanism; 41, first support plate; 42, second support plate; 43, first support groove; 44, second support groove; 5, lubricating mechanism; 51, oil storage tank; 52, oil delivery pipe; 53, oil delivery valve; 6, plugging assembly; 61, plugging plate; 62, sealing ring; 7, exhaust assembly; 71, exhaust pipe; 72, breathable waterproof membrane; 73, pressure relief valve; 74, detecting part; 75, exhaust cavity; 8, buffering assembly; 81, buffer rod; 83, spring. Detailed Embodiments

[0031] The following further elaborates on the present application in detail.

[0032] The embodiments of the present application disclose a gantry five-axis machining center for overhead crane.

[0033] Embodiment 1, referring to Figures 1-3, The overhead crane five-axis gantry machining center includes a machine body 1, two crossbeams 11, a base 12 and a tool holder 13. The two crossbeams 11 are connected to each other and form a mounting hole 14 at the middle position. The two crossbeams 11 are horizontally slidably mounted on the upper surface of the machine body 1. The base 12 is slidably mounted on the mounting hole 14 and the upper surfaces of the two crossbeams 11 respectively through a sliding mechanism 2 and a supporting mechanism 4, and the bottom of the base 12 extends below the crossbeam 11 through the mounting hole 14. The tool holder 13 is vertically slidably arranged on the base 12. The tool holder 13 is located between the two crossbeams 11 and has the same distance from the two crossbeams 11. The base 12 slides along the length direction of the crossbeam 11, and the sliding direction of the base 12 is perpendicular to the sliding direction of the crossbeam 11. Linear motors are provided on the machine body 1, the crossbeam 11 and the base 12. The three linear motors are respectively connected to the crossbeam 11, the base 12 and the tool holder 13 and respectively realize the movement of the three.

[0034] Refer to Figures 2-4 , There are two sliding mechanisms 2 and they are located on the opposite side walls of the mounting hole 14. The sliding mechanism 2 includes a first sliding plate 21, a second sliding plate 22 and a sliding buckling component 3. The first sliding plate 21 and the second sliding plate 22 are respectively fixedly installed on the opposite side walls of the base 12 and the mounting hole 14. The first sliding plate 21 and the second sliding plate 22 are arranged oppositely and the opposite side walls are abutted against each other for positioning. Or, a plurality of the first sliding plates 21 and the second sliding plates 22 are vertically arranged at intervals. At least two sliding buckling components 3 are arranged at intervals. The sliding buckling components 3 are arranged on the base 12 and the mounting hole 14 and are buckled with each other, so that the first sliding plate 21 and the second sliding plate 22 are located between two adjacent sliding buckling components 3.

[0035] The sliding buckling component 3 includes a first buckling plate 31 and a second buckling plate 32. The first buckling plate 31 and the second buckling plate 32 are respectively fixedly installed on the opposite side walls of the base 12 and the mounting hole 14. Arc-shaped first buckling grooves 33 are formed on the upper surface and the lower surface of the second buckling plate 32. The first buckling plate 31 and the second buckling plate 32 are arranged along the sliding direction of the base 12. A second buckling groove 34 is formed on the side wall of the first buckling plate 31 close to the second buckling plate 32. The second buckling groove 34 is buckled and slidably installed on the end of the second buckling plate 32 far from the mounting hole 14 and the two first buckling grooves 33, so as to be able to limit the horizontal sliding of the base 12 from multiple directions.

[0036] There are two support mechanisms 4 which are located on two cross beams 11. The support mechanism 4 includes a first support plate 41 and a second support plate 42. The first support plate 41 and the second support plate 42 are respectively fixedly installed on the opposite side walls of the base 12 and the cross beam 11. The two ends of the second support plate 42 extend to both ends of the installation hole 14. Arc-shaped first support grooves 43 are formed on the opposite side walls of the second support plate 42. The first support plate 41 and the second support plate 42 are arranged along the sliding direction of the base 12, and the first support plate 41 is located above the second support plate 42. A second support groove 44 is formed on the lower surface of the first support plate 41. The second support groove 44 is buckled and slidably installed on the top end of the second support plate 42 and the two second support grooves 44, so as to limit the horizontal sliding of the base 12 from multiple directions.

[0037] Refer to Figure 2 , Figure 5 , buffer components 8 electrically connected to the linear motor are fixedly installed on the machine body 1, the cross beam 11 and the base 12. The buffer components 8 are respectively used to buffer and limit the movement of the machine body 1, the cross beam 11 and the base 12. Here, the buffer component 8 located on the machine body 1 will be taken as an example for explanation.

[0038] The buffer component 8 includes a buffer rod 81, a sensor and a spring 83. The buffer rod 81 is slidably installed on the machine body 1 along the sliding direction of the cross beam 11. The sensor is fixedly installed on the machine body 1 and electrically connected to the linear motor. The spring 83 is fixedly installed on the machine body 1, fixedly connected to the buffer rod 81 and sleeved on the buffer rod 81. When the buffer rod 81 is not in contact with the cross beam 11, the buffer rod 81 is not in contact with the sensor. When the cross beam 11 moves to push the buffer rod 81 to move, the buffer rod 81 presses against the sensor, thereby controlling the linear motor to stop, reducing the risk of over-limit movement of the machine body 1, the cross beam 11 and the base 12.

[0039] The working principle of the embodiment of the present application is as follows: The second buckling groove 34 of the buckling plate one 31 is buckled and slidably installed on one end of the buckling plate two 32 away from the installation hole 14 and the two second buckling grooves 34, so as to limit the horizontal sliding of the base 12 from multiple directions. The opposite side walls of the first sliding plate 21 and the second sliding plate 22 are abutted against each other for positioning, so that the base 12 can be horizontally slidably installed on the installation hole 14 for limiting. At the same time, the second support groove 44 is buckled and slidably installed on the top end of the second support plate 42 and the two second support grooves 44, so as to further limit the horizontal sliding of the base 12, and can also support the base 12, making the base 12 stable during sliding, reducing the probability of deformation of the machine tool, and improving the machining accuracy of the machine tool.

[0040] Embodiment 2, refer to Figures 6-8The difference between this embodiment and embodiment 1 is that the support groove 44 includes a lubricating surface 15, a lubricating surface 16 and a lubricating surface 3 17 which are respectively in contact with the two support grooves 1 43, the two side walls of the support plate 2 42 and the top of the support plate 2 42, the length directions of the lubricating surface 15, the lubricating surface 16 and the lubricating surface 3 17 are parallel to the sliding direction of the base 12, and a plurality of lubricating grooves 18 penetrating the lubricating surface 15, the lubricating surface 2 16 and the lubricating surface 3 17 are opened along the sliding direction of the base 12, the plurality of lubricating grooves 18 are interconnected through a plurality of connecting grooves 19, and the plurality of connecting grooves 19 are arranged at intervals along the sliding direction of the base 12, and a lubricating mechanism 5 connected to the lubricating groove 18 is arranged on the base 12, and the lubricating mechanism 5 is used to input lubricating oil and to seal the two ends of the lubricating groove 18.

[0041] Reference Figure 6 , Figure 8 and Figure 9 The lubrication mechanism 5 includes an oil storage tank 51, an oil delivery pipe 52, a plugging assembly 6 and an exhaust assembly 7. The oil storage tank 51 is fixedly mounted on the side wall of the support plate 41 through the oil delivery pipe 52. The oil delivery pipe 52 is fixedly mounted on the lower surface of the oil storage tank 51 and is fixedly connected to the side wall of the base 12. An oil delivery valve 53 for controlling opening and closing is fixedly mounted on the oil delivery pipe 52, and the oil delivery pipe 52 is connected to the lubrication groove 18.

[0042] Two sealing components 6 are provided and fixedly installed on the opposite side walls of the support plate 1 41. The sealing components 6 include a sealing plate 61 and a sealing ring 62. The sealing plate 61 is fixedly installed on the side wall of the support plate 1 41 by screws, and the lower surface of the sealing plate 61 is parallel to the upper surface of the support plate 2 42 and is provided with a sealing groove; the sealing ring 62 is clamped and installed on the sealing groove and is pressed against the upper surface of the support plate 2 42 under the action of elastic force for sealing, thereby achieving sealing of both ends of multiple lubrication grooves 18.

[0043] The exhaust assembly 7 is used to exhaust the air in the lubrication groove 18 and the connecting groove 19 and is electrically connected to the oil valve 53. The exhaust assembly 7 includes an exhaust pipe 71, a breathable and waterproof membrane 72, a pressure relief valve 73 and a detection component 74. One end of the exhaust pipe 71 is fixedly installed on the side wall of the support plate 41 away from the oil pipe 52 through a connecting ring and screws and is connected to the lubrication groove 18; the two sealing plates 61 are provided with clearance holes for the exhaust pipe 71 and the oil pipe 52 to make way.

[0044] The pressure relief valve 73 is fixedly mounted on the end of the exhaust pipe 71 away from the base 12. The pressure relief valve 73 is provided with a connecting rod extending into the exhaust pipe 71. A mounting ring is provided on the end of the connecting rod away from the pressure relief valve 73. The axes of the mounting ring and the exhaust pipe 71 coincide with each other, and the outer wall of the mounting ring abuts against the inner wall of the exhaust pipe 71 for positioning; the breathable and waterproof membrane 72 is fixedly mounted on the mounting ring and allows air to pass through and blocks the passage of lubricating oil.

[0045] An exhaust pipe 71 located between a breathable waterproof membrane 72 and a pressure relief valve 73 forms an exhaust cavity 75. Air located in a lubricating groove 18 and a communication groove 19 enters the exhaust cavity 75 through the breathable waterproof membrane 72 for storage. When the air pressure in the exhaust cavity 75 reaches a specified value, the pressure relief valve 73 relieves the pressure of the exhaust cavity 75. A detection piece 74 is fixedly installed on the inner side wall of the exhaust pipe 71 near one end of a support plate 41 through the exhaust pipe 71. Lubricating oil located in the lubricating groove 18 enters the exhaust pipe 71, and the detection piece 74 is used to detect the hydraulic pressure of the lubricating oil; a control box for controlling the opening and closing of an oil supply valve 53 is fixedly installed on a base 12. The detection piece 74 is electrically connected to the control box. The detection piece 74 transmits a detection signal to the control box, and the control box controls the opening and closing of the oil supply valve 53 according to the signal.

[0046] When the detection piece 74 detects that the hydraulic pressure of the lubricating oil is lower than the specified value, the oil supply valve 53 opens, and the lubricating oil in an oil storage tank 51 is added to the lubricating groove 18 and the communication groove 19, so that the lubricating groove 18 and the communication groove 19 are filled with lubricating oil. With the addition of the lubricating oil, the pressure at the detection piece 74 increases, and air enters the exhaust cavity 75 through the breathable waterproof membrane 72. When the air pressure in the exhaust cavity 75 reaches the specified value, the pressure relief valve 73 relieves the pressure in the exhaust cavity 75. When the detection piece 74 detects that the pressure reaches the specified value, the oil supply valve 53 closes.

[0047] The working principle of the embodiment of the present application is as follows: Two plugging plates 61 cause two sealing rings 62 to press against a support plate 42 for sealing, so as to seal both ends of a plurality of lubricating grooves 18. The base 12 moves to drive the lubricating grooves 18 and the communication grooves 19 to move simultaneously, so that the movement of the base 12 can be lubricated, and the leakage and waste of lubricating oil are reduced, the construction accuracy of the machine tool is improved, and the energy consumption of the lubricating oil is reduced.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A five-axis gantry machining center with a crane, characterized by: The machine comprises a body (1), two cross beams (11), a base (12) and a knife seat (13); the two cross beams (11) are connected to each other and a mounting hole (14) is formed at the middle of the two cross beams; the base (12) is slidably mounted on the mounting hole (14) and the two cross beams (11) through a sliding mechanism (2) and a supporting mechanism (4) and passes through the mounting hole (14) to extend below the cross beams (11); and the knife seat (13) is vertically slidably arranged on the base (12); The sliding mechanism (2) is provided with two and is located on two opposite side walls of the mounting hole (14), and the sliding mechanism (2) comprises: The sliding plate 1 (21) and the sliding plate 2 (22) are respectively arranged on the base (12) and the mounting hole (14), and a plurality of sliding plates are arranged correspondingly and abut against each other for positioning; The sliding buckle assembly (3) is arranged on the base (12) and the mounting hole (14) and is mutually buckled and slidably connected. At least two sliding buckle assemblies (3) are provided, and the sliding plate 1 (21) and the sliding plate 2 (22) are located between two adjacent sliding buckle assemblies (3).

2. The five-axis gantry machining center for a crane according to claim 1, characterized in that: The sliding buckle assembly (3) comprises: A buckle plate 1 (31) and a buckle plate 2 (32) are respectively arranged on the base (12) and the mounting hole (14); buckle groove 1 (33) is provided on two opposite side walls of the buckle plate 2 (32); buckle groove 2 (34) is provided on the buckle plate 1 (31); the buckle groove 2 (34) is buckled and slidably arranged on an end of the buckle plate 2 (32) away from the mounting hole (14) and on the two buckle grooves 1 (33).

3. The five-axis gantry machining center for a crane according to claim 1, characterized in that: The support mechanisms (4) are provided in two pieces and are located on two crossbeams (11). The support mechanisms (4) include: A support plate 1 (41) and a support plate 2 (42) are respectively arranged on the base (12) and the cross beam (11); a support groove 1 (43) is provided on two opposite side walls of the support plate 2 (42); a support groove 2 (44) is provided on the support plate 1 (41); the support groove 2 (44) is buckled and slidably arranged on an end of the support plate 2 (42) away from the cross beam (11) and on the two support grooves 1 (43).

4. The five-axis gantry machining center for a crane according to claim 3, characterized in that: The support groove 2 (44) comprises a lubricating surface 1 (15), a lubricating surface 2 (16) and a lubricating surface 3 (17) which are respectively in contact with the two support grooves 1 (43), the two side walls of the support plate 2 (42) opposite to each other and the top of the support plate 2 (42); the length directions of the lubricating surface 1 (15), the lubricating surface 2 (16) and the lubricating surface 3 (17) are parallel to the sliding direction of the base (12) and a plurality of lubricating grooves (18) penetrating the lubricating surface 1 (15), the lubricating surface 2 (16) and the lubricating surface 3 (17) are provided along the sliding direction of the base (12); the plurality of lubricating grooves (18) are interconnected via a plurality of connecting grooves (19); and a lubricating mechanism (5) is provided on the base (12) and is connected to the lubricating groove (18) and is used to input lubricating oil and to seal both ends of the lubricating groove (18).

5. The five-axis gantry machining center for a crane according to claim 4, characterized in that: The lubrication mechanism (5) comprises: An oil storage tank (51) is arranged on the side wall of the support plate (41) via an oil delivery pipe (52) and is filled with lubricating oil. The oil delivery pipe (52) is provided with an oil delivery valve (53) for controlling opening and closing and is used to add lubricating oil to the lubrication groove (18) and the connecting groove (19) under the action of gravity; A plugging assembly (6) for plugging both ends of the lubrication groove (18); The exhaust assembly (7) is used to exhaust the air in the lubrication groove (18) and the communication groove (19) and is electrically connected to the oil delivery valve (53).

6. The five-axis gantry machining center for a crane according to claim 5, characterized in that: The blocking components (6) are provided with two and are located on two opposite side walls of the support plate 1 (41). The blocking components (6) include: A blocking plate (61) is detachably arranged on a side wall of the supporting plate (41); The sealing ring (62) is clamped on the sealing plate (61) and pressed against the second supporting plate (42) to perform sealing.

7. The five-axis gantry machining center for a crane according to claim 5, characterized in that: The exhaust assembly (7) comprises: An exhaust pipe (71) is disposed on the first support plate (41) and is used to exhaust air in the lubrication groove (18); a breathable waterproof membrane (72) disposed on the exhaust pipe (71) and forming an exhaust cavity (75) with the exhaust pipe (71), wherein the breathable waterproof membrane (72) is used to allow air in the lubrication groove (18) to pass into the exhaust cavity (75) and to block the passage of lubricating oil; a pressure relief valve (73) disposed on the exhaust pipe (71) and in communication with the exhaust chamber (75); when the air pressure in the exhaust chamber (75) is greater than a specified value, the pressure relief valve (73) opens and allows the air in the exhaust chamber (75) to be discharged; The detection element (74) is arranged in the exhaust pipe (71) and is used to detect the lubricating oil pressure and is electrically connected to the oil delivery valve (53).

8. The five-axis gantry machining center for a crane according to claim 7, characterized in that: The exhaust pipe (71) is detachably arranged on the base (12) and facilitates replacement of the breathable and waterproof membrane (72), the detection component (74) and the pressure relief valve (73).

9. The five-axis gantry machining center for a crane according to claim 1, characterized in that: The movement of the crossbeam (11) and the base (12) are driven by a linear motor.

10. The five-axis gantry machining center for a crane according to claim 9, characterized in that: The machine body (1) and the crossbeam (11) are both provided with a buffer assembly (8) for buffering the crossbeam (11) and the base (12) respectively, and the buffer assembly (8) comprises: A buffer rod (81) slidably disposed on the machine body (1); An inductor, arranged on the machine body (1) and electrically connected to the linear motor; The spring (83) is sleeved on the buffer rod (81) and connected to the buffer rod (81) and the machine body (1); when the crossbeam (11) moves to push the buffer rod (81) to abut against the sensor, the sensor controls the crossbeam (11) to stop moving via the linear motor.

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