Inverted T-shaped cross slide vertical five-axis machining center

Abstract

The application discloses a T-shaped cross slide vertical five-axis machining center and relates to the technical field of five-axis machining. In order to solve the problem of precision, the application specifically comprises a base, an X-axis linear guide rail, a saddle, a Y-axis linear guide rail, a rotary table supporting plate, a five-axis cradle rotary table, a stand column, a Z-axis linear guide rail, a spindle box and a vertical tool magazine. The saddle is connected with the base through the X-axis linear guide rail to realize left and right movement of the X-axis. The rotary table supporting plate is connected with the saddle through the Y-axis linear guide rail to realize front and back movement of the Y-axis. The five-axis cradle rotary table is installed on the rotary table supporting plate to realize rotary movement of the A-axis and the C-axis. The stand column is installed on the base. The spindle box is connected with the stand column through the Z-axis linear guide rail. Compared with the traditional vertical five-axis machining center, the T-shaped cross slide structure can effectively reduce the overhanging of the saddle and the workbench. When the weight and inertia of the five-axis cradle rotary table are applied, the precision change during the operation of the machine tool is small, and high-precision five-axis linkage machining of workpieces can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of strength testing, in particular to a T-shaped cross slide vertical five-axis machining center. BACKGROUND

[0002] With the rapid development of manufacturing industry in China, the demand for high-end numerical control machine tools in the equipment manufacturing industry such as aerospace, shipbuilding, wind power, hydroelectric power, and new energy vehicles is increasing, especially in the machining of complex parts. Traditional three-axis machine tools cannot meet the machining requirements, and four-axis, five-axis or even multi-axis machine tools are needed. The vertical five-axis machining center has the advantages of small manufacturing difficulty, low manufacturing cost, and easy operation, and is widely used.

[0003] However, the traditional vertical five-axis machining center adopts a cross slide structure, and the saddle and workbench are suspended and extended, and are affected by the weight and inertia of the five-axis cradle. During operation, the precision changes greatly, the achievable machining precision is low, and it is difficult to ensure high-precision machining of parts.

[0004] Therefore, the present application proposes a T-shaped cross slide vertical five-axis machining center. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and propose a T-shaped cross slide vertical five-axis machining center.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The T-shaped cross slide vertical five-axis machining center comprises a base, an X-axis linear guide rail, a saddle, a Y-axis linear guide rail, a rotary table support plate, a five-axis cradle rotary table, a column, a Z-axis linear guide rail, a spindle box, and a vertical tool magazine.

[0008] The saddle is connected to the base by the X-axis linear guide rail to realize X-axis left and right movement, the rotary table support plate is connected to the saddle by the Y-axis linear guide rail to realize Y-axis forward and backward movement, the five-axis cradle rotary table is installed on the rotary table support plate to realize A-axis and C-axis rotary movement, the column is installed on the base, the spindle box is connected to the column by the Z-axis linear guide rail to realize Z-axis up and down movement of the spindle box, and the vertical tool magazine is installed on the left side of the column to realize the tool changing function of the spindle box.

[0009] Preferably, the five-axis cradle rotary table comprises a rack one fixed to one end of the rotary table support plate and a rack two fixed to the other end of the rotary table support plate, the opposite sides of the rack one and the rack two are fixed with the same connecting frame, and the top of the connecting frame is provided with a self-rotating rotary table capable of clamping a workpiece and having self-rotation capability.

[0010] Furthermore: the rotating turntable includes a fixed cylinder and a rotating cylinder, the fixed cylinder is fixed to the inner side wall of the connecting frame, the rotating cylinder is movably connected to the inner wall of the fixed cylinder, and the end face of the rotating cylinder is fixed with a piston ring that is sealed and movably matched with the fixed cylinder, the top of the rotating cylinder is provided with a clamping assembly for clamping the workpiece, and the bottom outer wall of the fixed cylinder is fixed with a hydraulic motor, and the output shaft of the hydraulic motor is connected to the rotating cylinder through a transmission shaft.

[0011] On the basis of the above solution: a shaft seal is provided between the transmission shaft and the fixed cylinder.

[0012] Among the above schemes, a better scheme is: the inner cavities of the said platform one and platform two are both provided with transition cavities, the inner wall of the transition cavity is equipped with a dynamic ring through a sealing bevel contact seal, one side of the transition cavity is connected to an oil pump, and one side of the sealing bevel is provided with a connecting pipe connected to the transition cavity, the connecting pipe is connected to one end of the hydraulic motor, and the other end of the hydraulic motor is connected to oil tank one fixed to the bottom of the connecting frame, oil tank two is fixed on both sides of the turntable support plate, and the oil pump is connected to oil tank two.

[0013] As a further solution of the present invention: the inner wall of the transition chamber is rotatably connected to a connecting pipe, the end face of the rotating ring is buckled with spring 2, the other end of spring 2 is buckled to the end face of the sealing bevel, and the outer wall of the connecting frame is fixed with a limit plate, and the side wall of the moving ring is slidably connected to the limit plate through a limit rod.

[0014] At the same time, the clamping assembly includes two slides symmetrically slidably connected to the outer wall of the top of the rotating drum, and the inner side of the slide is rotatably connected to a multi-stage semicircular clamping platform, and each stage has two semicircular clamping platforms.

[0015] As a preferred embodiment of the present invention, the inner wall of the rotating drum is provided with two oil chambers, the inner wall of the oil chamber is slidably connected to a piston, the top of the piston is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the bottom outer wall of the slide.

[0016] At the same time, the bottom end of the oil chamber of the rotating cylinder is connected to the inner cavity of the fixed cylinder, and a spring 1 is buckled on the outer wall of the bottom of the rotating cylinder, and the other end of the spring 1 contacts and cooperates with the inner wall of the fixed cylinder. A hydraulic telescopic rod is fixed to the inner wall of the fixed cylinder, and the telescopic end of the hydraulic telescopic rod is fixed to the outer wall of the bottom of the rotating cylinder by bolts, and the inner cavity of the fixed cylinder is filled with hydraulic oil; the connecting pipe at the first position of the platform is connected to the hydraulic telescopic rod, and the connecting pipe at the second position of the platform is connected to the hydraulic motor.

[0017] As a better solution of the present invention: the transmission shaft includes a transmission shaft and a sleeve, the transmission shaft is fixed to the outer wall of the rotating shaft of the hydraulic motor, the sleeve is fixed to the bottom outer wall of the rotating drum, and the side wall of the transmission shaft is provided with a key-shaped groove, the inner wall of the sleeve is fixed with a key-shaped protrusion that is clearance-matched with the key-shaped groove, the inner wall of the turntable support plate is fixedly embedded with an electric motor, and the output shaft of the motor is matched with the outer wall of the connecting frame through a synchronous belt drive.

[0018] The beneficial effects of the present invention are:

[0019] 1. Compared with the traditional vertical five-axis machining center, the present invention adopts a cross slide structure, which can effectively reduce the overhang of the saddle and worktable. When affected by the weight and inertia of the five-axis cradle turntable, the accuracy change during the operation of the machine tool is small, and high-precision five-axis linkage machining of the workpiece can be achieved.

[0020] 2. The present invention provides a sealing effect by arranging the dynamic ring and the transition cavity into a sealing bevel matching form and then utilizing the elastic force of the second spring to make them fit tightly together. At the same time, the wear of the dynamic ring caused by friction can be compensated for, thereby preventing oil leakage.

[0021] 3. The present invention, by providing a slide and a multi-stage semicircular clamping platform, can utilize the characteristic that the multi-stage semicircular clamping platforms can rotate relative to each other so that the clamping points can be switched at will, thereby being able to fit the side of the special shape and ensuring stable clamping.

[0022] 4. The present invention indirectly drives the movement of the piston through a hydraulic telescopic rod to realize the execution of clamping and unclamping actions. It allows the movement of the two pistons to be asynchronous, so that the movement of the two slides can also be asynchronous during clamping, thereby adaptively compensating for the asymmetry of special-shaped workpieces and ensuring clamping stability.

[0023] 5. The present invention utilizes a dynamic ring as a rotating transition piece, which can ensure that the rotation angle adjustment of the workpiece and the posture adjustment of the workpiece as the connecting frame rotates do not affect each other. At the same time, the rotation driving source of the connecting frame, the rotation driving source of the rotating drum and the driving source for clamping the workpiece are all fixed relative to the turntable support plate, thereby preventing the pipeline of the driving source from wearing or entangled with other parts, thereby increasing the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the five-axis cradle turntable of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0026] Figure 3This is a schematic diagram of the structure of the rotating turntable of the vertical five-axis machining center with an inverted T-shaped cross slide according to the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the second gantry of the vertical five-axis machining center with an inverted T-shaped cross slide proposed in the present invention;

[0028] Figure 5 This is a schematic diagram of the clamping assembly structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the hydraulic telescopic rod structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of the transmission shaft structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of the position structure of the oil tank 1 and the oil tank 2 of the embodiment 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0032] Figure 9 This is a schematic diagram of the position structure of the synchronous belt and motor of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0033] Figure 10 This is a schematic diagram of the hydraulic motor piping structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention;

[0034] Figure 11 This is a schematic diagram of the hydraulic telescopic rod pipeline structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention.

[0035] In the figure: 1. Base; 2. X-axis linear guide; 3. Saddle; 4. Y-axis linear guide; 5. Turntable support; 6. Five-axis cradle turntable; 7. Column; 8. Z-axis linear guide; 9. Spindle box; 10. Vertical tool magazine; 11. Stand 1; 12. Connecting frame; 13. Rotating turntable; 14. Stand 2; 15. Fixed cylinder; 16. Piston ring; 17. Rotating cylinder; 18. Clamping assembly; 19. Spring 1; 20. Hydraulic motor; 21. Transmission shaft; 22. Sealing bevel ; 23. Transition chamber; 24. Oil pump; 25. Swivel; 26. Spring 2; 27. Limit rod; 28. Connecting pipe; 29. ​​Limit plate; 30. Moving ring; 31. Oil chamber; 32. Piston; 33. Connecting rod; 34. Slide; 35. Semicircular clamping table; 36. Shaft seal; 37. Hydraulic telescopic rod; 38. Drive shaft; 39. Bushing; 40. Key-shaped protrusion; 41. Key-shaped groove; 42. Oil tank 1; 43. Oil tank 2; 44. Synchronous belt; 45. Electric motor; 46. Hydraulic oil. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention. Example 1

[0038] Inverted T-type cross slide vertical five-axis machining center, such as Figure 1 As shown, it includes a base 1, an X-axis linear guide 2, a saddle 3, a Y-axis linear guide 4, a turntable pallet 5, a five-axis cradle turntable 6, a column 7, a Z-axis linear guide 8, a spindle box 9, and a vertical tool magazine 10. The saddle 3 is connected to the base 1 through the X-axis linear guide 2 to realize the left and right movement of the X-axis, and the turntable pallet 5 is connected to the saddle 3 through the Y-axis linear guide 4 to realize the forward and backward movement of the Y-axis. The five-axis cradle turntable 6 is installed on the turntable pallet 5 to realize the rotational movement of the A-axis and C-axis. The column 7 is installed on the base 1. The spindle box 9 is connected to the column 7 through the Z-axis linear guide 8 to realize the up and down movement of the spindle box 9 Z-axis. The vertical tool magazine 10 is installed on the left side of the column 7 to realize the tool changing function of the spindle box 9.

[0039] In this embodiment, there is no limitation on the specific types of the X-axis linear guide 2, the Y-axis linear guide 4, and the Z-axis linear guide 8. The cooperation of the three is intended to enable the spindle box 9 to move relative to the workpiece along the X, Y, and Z axes. They can adopt electric slider-slide rail, screw-slider and other structures, and they are all existing mature technologies, which will not be elaborated in this embodiment.

[0040] In this embodiment, compared with the traditional vertical five-axis machining center, a cross slide structure is adopted, which can effectively reduce the overhang of the saddle and worktable. When affected by the weight and inertia of the five-axis cradle turntable, the accuracy changes little during the operation of the machine tool, and high-precision five-axis linkage processing of the workpiece can be achieved. Example 2

[0041] Inverted T-type cross slide vertical five-axis machining center, such as Figure 2-11 As shown, in addition to the X, Y, and Z axis movements, the five-axis machining also involves relative movement of the A and C axes, and for special-shaped workpieces, the workpiece also needs to have the function of self-rotation. The movement of the X, Y, and Z axes is a translational movement, and the wiring harness or pipeline of the driving source can be guided and protected by a drag chain. However, for rotational movement, the drag chain cannot guide the wiring harness or pipeline, which means that when the power source rotates, the pipeline or wire will also move, and the pipeline or wire will be damaged by friction with other components, and the rotational movement will also cause the wire or pipeline to be entangled with other components, resulting in an inability to work reliably. Therefore, in order to solve the above problems, this embodiment makes the following improvements on the basis of embodiment 1: the five-axis cradle turntable 6 includes a stand 11 fixed to one end of the turntable pallet 5 and a stand 2 14 fixed to the other end of the turntable pallet 5, and the stand 11 and the stand 2 14 are fixed on the opposite side with the same connecting frame 12, and the top of the connecting frame 12 is provided with a rotating turntable 13 that clamps the workpiece and has the ability to rotate.

[0042] The rotating turntable 13 includes a fixed cylinder 15 and a rotating cylinder 17. The fixed cylinder 15 is fixed to the inner wall of the connecting frame 12, and the rotating cylinder 17 is movably connected to the inner wall of the fixed cylinder 15, and a piston ring 16 is fixed on the end face of the rotating cylinder 17, which is sealed and movably matched with the fixed cylinder 15. The matching form of the fixed cylinder 15 and the piston ring 16 is the same as the matching form between the piston and the cylinder body of a car engine. It can ensure relative movement while also having sealing ability. It is an existing mature technology and will not be described in detail in this embodiment. A clamping assembly 18 for clamping the workpiece is provided on the top of the rotating cylinder 17, and a hydraulic motor 20 is fixed to the bottom outer wall of the fixed cylinder 15. The output shaft of the hydraulic motor 20 is connected to the rotating cylinder 17 through a transmission shaft 21, and a shaft seal 36 is provided between the transmission shaft 21 and the fixed cylinder 15. The shaft seal 36 is widely used in the pump head pump cavity of the water pump and is also a mature existing technology and will not be described in detail in this embodiment.

[0043] When the hydraulic motor 20 rotates, it can drive the rotating drum 17 to rotate through the transmission shaft 21, thereby driving the clamping assembly 18 to rotate, thereby realizing the self-rotation of the workpiece.

[0044] The inner cavities of the described platform 11 and platform 2 14 are both provided with a transition cavity 23, and the inner wall of the transition cavity 23 is contact-sealed with a dynamic ring 30 through a sealing bevel 22. One side of the transition cavity 23 is connected to an oil pump 24, and one side of the sealing bevel 22 is provided with a connecting pipe 28 connected to the transition cavity 23. The connecting pipe 28 is connected to one end of the hydraulic motor 20, and the other end of the hydraulic motor 20 is connected to an oil tank 1 42 fixed to the bottom of the connecting frame 12. Oil tank 2 43 is fixed on both sides of the turntable support plate 5, and the oil pump 24 is connected to the oil tank 2 43.

[0045] The oil tank 2 43, the oil pump 24, the transition chamber 23, the connecting pipe 28, the hydraulic motor 20, and the oil tank 1 42 form an oil circuit. The oil pump 24 can drive the oil in the oil circuit. When the oil pump 24 drives the oil in different directions, the hydraulic motor 20 will rotate forward and reverse accordingly, thereby driving the workpiece to rotate in different directions.

[0046] The inner wall of the transition chamber 23 is rotatably connected to a connecting pipe 28, the end face of the rotating ring 25 is buckled with a spring 26, the other end of the spring 26 is buckled to the end face of the sealing inclined surface 22, and the outer wall of the connecting frame 12 is fixed with a limit plate 29, and the side wall of the dynamic ring 30 is slidably connected to the limit plate 29 through a limit rod 27.

[0047] When the connecting frame 12 rotates, causing the workpiece to adjust its angle and posture, the limit plate 29 will also rotate, and the connecting pipe 28 will also rotate synchronously with the connecting frame 12, so that the connecting pipeline between the connecting pipe 28 and the hydraulic motor 20 can rotate synchronously with the connecting frame 12, so that this pipeline can be completely fixed to the outer wall of the connecting frame 12, and the oil pump 24 serving as the workpiece rotation drive source is in a fixed state at this time. At the same time, while the dynamic ring 30 rotates, it will also be affected by the elastic force of spring 26, and the sealing bevel 22 is used to seal the dynamic ring 30 and the transition chamber 23.

[0048] In addition, the present device can play a sealing role by setting the dynamic ring 30 and the transition chamber 23 to cooperate with the sealing slope 22, and then using the elastic force of the spring 26 to make them fit tightly, thereby achieving a sealing effect. At the same time, after the dynamic ring 30 is worn due to friction, wear compensation can also be performed, thereby preventing oil leakage.

[0049] To solve the clamping problem, such as Figure 5 As shown, the clamping assembly 18 includes two slides 34 symmetrically slidably connected to the outer wall of the top of the rotating drum 17, and the inner side of the slide 34 is rotatably connected to a multi-stage semicircular clamping platform 35, and each stage of the semicircular clamping platform 35 is provided with two.

[0050] The inner wall of the rotating drum 17 is provided with two oil chambers 31 , the inner wall of the oil chamber 31 is slidably connected to a piston 32 , the top of the piston 32 is rotatably connected to a connecting rod 33 , and the other end of the connecting rod 33 is rotatably connected to the bottom outer wall of the slide 34 .

[0051] When negative pressure appears in the oil chamber 31, the piston 32 will move downward, thereby pulling the two slides 34 toward the middle through the connecting rod 33. When moving closer, the multiple semicircular clamping platforms 35 will rotate and contact both sides of the workpiece to achieve clamping.

[0052] This device, by providing a slide 34 and a multi-stage semicircular clamping platform 35, can utilize the characteristic that the multi-stage semicircular clamping platform 35 can rotate with each other so that the clamping points can be switched at will, thereby being able to fit the side of an irregular shape and ensuring stable clamping.

[0053] The bottom end of the oil chamber 31 of the rotating cylinder 17 is connected to the inner cavity of the fixed cylinder 15, and a spring 19 is buckled on the bottom outer wall of the rotating cylinder 17, and the other end of the spring 19 contacts and cooperates with the inner wall of the fixed cylinder 15. A hydraulic telescopic rod 37 is fixed to the inner wall of the fixed cylinder 15, and the telescopic end of the hydraulic telescopic rod 37 is fixed to the bottom outer wall of the rotating cylinder 17 by bolts, and the inner cavity of the fixed cylinder 15 is filled with hydraulic oil 46.

[0054] When the hydraulic telescopic rod 37 is extended or retracted, it can drive the rotating drum 17 to rise and fall, thereby changing the volume of the inner cavity of the fixed cylinder 15. Since the amount of hydraulic oil 46 is fixed, the oil chamber 31 is connected to the inner cavity of the fixed cylinder 15. Therefore, when the rotating drum 17 moves up, the piston 32 will descend, and when the rotating drum 17 moves down, the piston 32 will rise, realizing the function of controlling the extension and retraction of the piston 32 by the extension and retraction of the hydraulic telescopic rod 37. Moreover, due to the fluidity of the hydraulic oil 46, the hydraulic telescopic rod 37 can indirectly drive the movement of the two pistons 32 while allowing the two pistons 32 to move asynchronously.

[0055] This device indirectly drives the piston 32 to move through the hydraulic telescopic rod 37 to realize the execution of clamping and unclamping actions. It allows the two pistons 32 to move asynchronously, so that when clamping, the two slides 34 can also move asynchronously, thereby adaptively compensating for the asymmetry of special-shaped workpieces and ensuring clamping stability.

[0056] Since the hydraulic telescopic rod 37 will also rotate with the rotation of the workpiece and will also rotate with the rotation of the connecting frame 12, in order to further solve the rotation problem of the oil pipeline of the hydraulic telescopic rod 37, the connecting pipe 28 at the platform 11 is connected to the hydraulic telescopic rod 37, and the connecting pipe 28 at the platform 2 14 is connected to the hydraulic motor 20.

[0057] This device utilizes the dynamic ring 30 as a rotating transition piece, which can make the rotation angle adjustment of the workpiece and the posture adjustment of the workpiece as it rotates with the connecting frame 12 not affect each other. At the same time, the rotation driving source of the connecting frame 12, the rotation driving source of the rotating drum 17 and the driving source for clamping the workpiece are all fixed relative to the turntable support plate 5, thereby preventing the pipeline of the driving source from being worn or entangled with other parts, thereby increasing the reliability of use.

[0058] In order to solve the transmission compensation problem of the lifting of the drum 17, Figure 7 As shown, the transmission shaft 21 includes a transmission shaft 38 and a sleeve 39. The transmission shaft 38 is fixed to the outer wall of the rotating shaft of the hydraulic motor 20, and the sleeve 39 is fixed to the bottom outer wall of the rotating drum 17. The side wall of the transmission shaft 38 is provided with a key-shaped groove 41, and the inner wall of the sleeve 39 is fixed with a key-shaped protrusion 40 that is clearance-matched with the key-shaped groove 41.

[0059] The cooperation between the key-shaped protrusion 40 and the key-shaped groove 41 enables the transmission shaft 38 and the sleeve 39 to cooperate in rotational transmission and to move axially relative to each other, thereby enabling the hydraulic motor 20 and the drum 17 to cooperate in rotational transmission and to move axially relative to each other, thereby realizing transmission compensation.

[0060] The inner wall of the turntable support plate 5 is fixedly embedded with a motor 45 , and the output shaft of the motor 45 is coupled to the outer wall of the connecting frame 12 through a synchronous belt 44 ; when the motor 45 is started, it can drive the connecting frame 12 to rotate through the synchronous belt 44 .

[0061] When the present embodiment is in use, when the motor 45 is started, it can drive the connecting frame 12 to rotate through the synchronous belt 44. When the connecting frame 12 rotates, the workpiece is adjusted in angle and posture. At this time, the limit plate 29 will also rotate, and the connecting pipe 28 will also rotate synchronously with the connecting frame 12, so that the connecting pipe 28 and the hydraulic motor 20 can rotate synchronously with the connecting frame 12, so that this pipe can be completely fixed to the outer wall of the connecting frame 12, and the oil pump 24 serving as the driving source for the self-rotation of the workpiece is in a fixed state. At the same time, when the dynamic ring 30 rotates, it will also be affected by the elastic force of the spring 26, and the sealing bevel 22 is used to seal the dynamic ring 30 and the transition chamber 23. When the hydraulic telescopic rod 37 is extended or retracted, it can drive the rotating drum 17 When the rotating cylinder 17 moves up, the piston 32 will drop down, and when the rotating cylinder 17 moves down, the piston 32 will rise, realizing the function of controlling the extension and retraction of the piston 32 by the hydraulic telescopic rod 37. Moreover, due to the fluidity of the hydraulic oil 46, the hydraulic telescopic rod 37 can indirectly drive the movement of the two pistons 32 while allowing the movement of the two pistons 32 to be asynchronous. When negative pressure appears in the oil chamber 31, the piston 32 will move downward, thereby pulling the two slides 34 to the middle through the connecting rod 33. When approaching, the multiple semicircular clamping platforms 35 will rotate and contact with both sides of the workpiece to achieve clamping.

[0062] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An inverted T-shaped cross slide vertical five-axis machining center, comprising a base (1), an X-axis linear guide (2), a saddle (3), a Y-axis linear guide (4), a turntable support (5), a five-axis cradle turntable (6), a column (7), a Z-axis linear guide (8), a spindle box (9), and a vertical tool magazine (10), characterized in that: The saddle (3) is connected to the base (1) via an X-axis linear guide (2) to achieve X-axis left and right movement, the turntable support plate (5) is connected to the saddle (3) via a Y-axis linear guide (4) to achieve Y-axis forward and backward movement, the five-axis cradle turntable (6) is installed on the turntable support plate (5) to achieve A-axis and C-axis rotational movement, a column (7) is installed on the base (1), the spindle box (9) is connected to the column (7) via a Z-axis linear guide (8) to achieve Z-axis up and down movement of the spindle box (9), and the vertical tool magazine (10) is installed on the left side of the column (7) to achieve the tool changing function of the spindle box (9); The five-axis cradle turntable (6) includes a stand 1 (11) fixed to one end of the turntable support plate (5) and a stand 2 (14) fixed to the other end of the turntable support plate (5), and the stand 1 (11) and the stand 2 (14) are fixed with a same connecting frame (12) on the opposite side, and a rotating turntable (13) with a self-rotating ability and capable of clamping a workpiece is provided on the top of the connecting frame (12); The rotating turntable (13) includes a fixed cylinder (15) and a rotating cylinder (17), wherein the fixed cylinder (15) is fixed to the inner side wall of the connecting frame (12), and the rotating cylinder (17) is movably connected to the inner wall of the fixed cylinder (15), and a piston ring (16) is fixed on the end surface of the rotating cylinder (17) and is sealed and movably matched with the fixed cylinder (15). A clamping assembly (18) for clamping a workpiece is provided on the top of the rotating cylinder (17), and a hydraulic motor (20) is fixed to the outer wall of the bottom of the fixed cylinder (15), and the output shaft of the hydraulic motor (20) is connected to the rotating cylinder (17) through a transmission shaft (21); The inner cavities of the platform 1 (11) and the platform 2 (14) are both provided with a transition cavity (23), the inner wall of the transition cavity (23) is contact-sealed with a dynamic ring (30) through a sealing bevel (22), one side of the transition cavity (23) is connected to an oil pump (24), one side of the sealing bevel (22) is provided with a connecting pipe (28) communicating with the transition cavity (23), the connecting pipe (28) is connected to one end of the hydraulic motor (20), the other end of the hydraulic motor (20) is connected to an oil tank 1 (42) fixed to the bottom of the connecting frame (12), and an oil tank 2 (43) is fixed to both sides of the turntable support plate (5), and the oil pump (24) is connected to the oil tank 2 (43); The inner wall of the transition chamber (23) is rotatably connected to a connecting pipe (28), the end face of the rotating ring (25) is buckled with a second spring (26), the other end of the second spring (26) is buckled to the end face of the sealing inclined surface (22), and a limiting disk (29) is fixed to the outer wall of the connecting frame (12), and the side wall of the moving ring (30) is slidably connected to the limiting disk (29) through a limiting rod (27).

2. The inverted T-shaped cross slide vertical five-axis machining center according to claim 1, characterized in that: A shaft seal (36) is provided between the transmission shaft (21) and the fixed cylinder (15).

3. The inverted T-shaped cross slide vertical five-axis machining center according to claim 1, characterized in that: The clamping assembly (18) comprises two slides (34) symmetrically slidably connected to the outer wall of the top of the rotating drum (17), and the inner side surface of the slide (34) is rotatably connected to a multi-stage semicircular clamping platform (35), and each stage of the semicircular clamping platform (35) is provided with two.

4. The inverted T-shaped cross slide vertical five-axis machining center according to claim 3, characterized in that: Two oil chambers (31) are formed on the inner wall of the rotating cylinder (17). A piston (32) is slidably connected to the inner wall of the oil chamber (31). The top of the piston (32) is rotatably connected to a connecting rod (33). The other end of the connecting rod (33) is rotatably connected to the bottom outer wall of the slide (34).

5. The inverted T-shaped cross slide vertical five-axis machining center according to claim 4, characterized in that: The bottom end of the oil chamber (31) of the rotating cylinder (17) is communicated with the inner cavity of the fixed cylinder (15), and a spring (19) is buckled on the outer wall of the bottom of the rotating cylinder (17), and the other end of the spring (19) contacts and fits with the inner wall of the fixed cylinder (15). A hydraulic telescopic rod (37) is fixed to the inner wall of the fixed cylinder (15), and the telescopic end of the hydraulic telescopic rod (37) is fixed to the outer wall of the bottom of the rotating cylinder (17) by bolts, and the inner cavity of the fixed cylinder (15) is filled with hydraulic oil (46); the connecting pipe (28) at the platform (11) is connected to the hydraulic telescopic rod (37), and the connecting pipe (28) at the platform (14) is connected to the hydraulic motor (20).

6. The inverted T-shaped cross slide vertical five-axis machining center according to claim 2, characterized in that: The transmission shaft (21) includes a transmission shaft (38) and a sleeve (39), wherein the transmission shaft (38) is fixed to the outer wall of the rotating shaft of the hydraulic motor (20), and the sleeve (39) is fixed to the outer wall of the bottom of the rotating drum (17). A key-shaped groove (41) is provided on the side wall of the transmission shaft (38), and a key-shaped protrusion (40) that is clearance-matched with the key-shaped groove (41) is fixed on the inner wall of the sleeve (39). An electric motor (45) is fixedly embedded on the inner wall of the turntable support plate (5), and an output shaft of the electric motor (45) is driven and matched with the outer wall of the connecting frame (12) through a synchronous belt (44).

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