Inverted-T-shaped cross-shaped sliding table vertical five-axis machining center

Abstract

The invention discloses an inverted-T-shaped cross-shaped sliding table vertical five-axis machining center, and relates to the technical field of five-axis machining. The precision problem is solved. The machine 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 achieve X-axis left-right movement, and the rotary table supporting plate is connected with the saddle through the Y-axis linear guide rail to achieve Y-axis front-back movement. The five-axis cradle rotary table is installed on the rotary table supporting plate to achieve A-axis and C-axis rotary motion, a stand column is installed on the base, and the spindle box is connected with the stand column through a Z-axis linear guide rail. Compared with a traditional vertical five-axis machining center, a cross-shaped sliding table structure is adopted, overhanging of the saddle and the workbench can be effectively reduced, when the center bears the weight and inertia of a five-axis cradle rotary table, the precision change in the operation process of a machine tool is small, and high-precision five-axis linkage machining of workpieces can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of strength testing, in particular to an inverted T-shaped cross slide vertical five-axis machining center. Background Art

[0002] With the rapid development of my country's manufacturing industry, the demand for high-end CNC machine tools in equipment manufacturing industries such as aerospace, shipbuilding, wind power generation, hydropower generation, and new energy vehicles is increasing. In particular, traditional three-axis machine tools can no longer meet the processing needs for complex parts processing, and four-axis, five-axis or even multi-axis machine tools are needed. Among them, vertical five-axis machining centers are widely used due to their advantages of low manufacturing difficulty, low manufacturing cost, and easy operation.

[0003] However, the traditional vertical five-axis machining center adopts a cross slide structure, and the saddle and worktable have large overhangs. At the same time, it is affected by the weight and inertia of the five-axis cradle. The accuracy varies greatly during the operation of the machine tool, and the achievable machining accuracy is low, making it difficult to meet the high-precision machining requirements of parts.

[0004] To this end, the present invention proposes an inverted T-shaped cross slide vertical five-axis machining center. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an inverted T-shaped cross slide vertical five-axis machining center.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: Inverted T-type cross slide vertical five-axis machining center, including base, X-axis linear guide, saddle, Y-axis linear guide, turntable pallet, five-axis cradle turntable, column, Z-axis linear guide, spindle box, vertical tool magazine, The saddle is connected to the base via an X-axis linear guide to realize the left and right movement of the X-axis, the turntable support plate is connected to the saddle via a Y-axis linear guide to realize the forward and backward movement of the Y-axis, the five-axis cradle turntable is installed on the turntable support plate to realize the rotational movement of the A-axis and C-axis, a column is installed on the base, the spindle box is connected to the column via a Z-axis linear guide to realize the up and down movement of the Z-axis 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.

[0007] Preferably: the five-axis cradle turntable includes a frame 1 fixed to one end of the turntable support plate and a frame 2 fixed to the other end of the turntable support plate, and the same connecting frame is fixed on the opposite side of the frame 1 and the frame 2, and a rotating turntable with self-rotation capability for clamping the workpiece is provided on the top of the connecting frame.

[0008] Furthermore: the self-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 surface 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, 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.

[0009] On the basis of the above solution: a shaft seal is arranged between the transmission shaft and the fixed cylinder.

[0010] A better solution among the above-mentioned solutions is: the inner cavities of the said platform one and platform two are both provided with a transition cavity, the inner wall of the transition cavity is provided with a dynamic ring with a sealing bevel contact seal, one side of the transition cavity is connected to an oil pump, 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, the other end of the hydraulic motor is connected to an 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.

[0011] As a further solution of the present invention: the inner wall of the transition chamber is rotatably connected with a connecting pipe, the end face of the rotating ring is buckled with spring 2, the other end of spring 2 is buckled with the end face of the sealing bevel, and the outer wall of the connecting frame is fixed with a limiting disk, and the side wall of the moving ring is slidably connected to the limiting disk through a limiting rod.

[0012] 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 surface of the slide is rotatably connected to a multi-stage semicircular clamping platform, and each stage of the semicircular clamping platform is set with two.

[0013] 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 with a piston, the top of the piston is rotatably connected with a connecting rod, and the other end of the connecting rod is rotatably connected to the bottom outer wall of the slide.

[0014] 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 bottom outer wall 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 bottom outer wall 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 place of the platform is connected to the hydraulic telescopic rod, and the connecting pipe at the second place of the platform is connected to the hydraulic motor.

[0015] 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 matches the key-shaped groove clearance, 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.

[0016] The beneficial effects of the present invention are: 1. Compared with the traditional vertical five-axis machining center adopting the cross slide structure, the present invention can effectively reduce the overhang of the saddle and the worktable. When subjected to the weight and inertia of the five-axis cradle turntable, the accuracy change is small during the operation of the machine tool, and high-precision five-axis linkage machining of the workpiece can be achieved.

[0017] 2. The present invention provides a sealing effect by arranging the dynamic ring and the transition cavity into a sealing inclined surface matching form, and then utilizing the elastic force of the second spring to make them tightly matched, and at the same time, it can also perform wear compensation after the dynamic ring is worn due to friction, thereby preventing oil leakage.

[0018] 3. The present invention, by providing a slide table and a multi-stage semicircular clamping table, can utilize the characteristic that the multi-stage semicircular clamping tables 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.

[0019] 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.

[0020] 5. The present invention utilizes a dynamic ring as a rotating transition piece, which can make the rotation angle adjustment of the workpiece and the posture adjustment of the workpiece as the connecting frame rotate without affecting each other, so that 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 being worn or entangled with other parts, thereby increasing the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It 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; Figure 2 It is a schematic diagram of the structure of the five-axis cradle turntable of the inverted T-shaped cross slide vertical five-axis machining center embodiment 2 proposed by the present invention; Figure 3 It is a schematic diagram of the structure of the self-rotating turntable of the vertical five-axis machining center with an inverted T-shaped cross slide according to the present invention; Figure 4 It is a schematic diagram of the internal structure of the second frame of the vertical five-axis machining center with an inverted T-shaped cross slide proposed by the present invention; Figure 5 It is a schematic diagram of the structure of the clamping assembly of the vertical five-axis machining center with an inverted T-shaped cross slide according to the present invention; Figure 6 It 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; Figure 7 It 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; Figure 8 It is a schematic diagram of the position structure of the oil tank 1 and the oil tank 2 of the embodiment 2 of the vertical five-axis machining center with an inverted T-shaped cross slide proposed by the present invention; Fig. 9 It is a schematic diagram of the synchronous belt and motor position structure of the inverted T-shaped cross slide vertical five-axis machining center embodiment 2 proposed by the present invention; Fig.10 It is a schematic diagram of the hydraulic motor pipeline structure of Example 2 of the inverted T-shaped cross slide vertical five-axis machining center proposed by the present invention; Fig.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.

[0022] In the figure: 1. Base; 2. X-axis linear guide; 3. Saddle; 4. Y-axis linear guide; 5. Turntable pallet; 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. Pipe connection; 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. Transmission 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

[0023] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0024] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention. Example

[0025] 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, 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 the 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, and 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.

[0026] 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 realize the relative movement of the spindle box 9 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.

[0027] 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 subjected to 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

[0028] Inverted T-type cross slide vertical five-axis machining center, such as Figure 2-11As shown, in addition to the movement of the X, Y, and Z axes, 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. For the movement of the X, Y, and Z axes, it 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 makes the pipeline or wire move when the power source rotates, and the pipeline or wire is damaged by friction with other components, and the rotational movement also causes the wire or pipeline to be entangled with other components, resulting in a situation where it cannot 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 support plate 5 and a stand 2 14 fixed to the other end of the turntable support plate 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.

[0029] 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 an automobile 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 a 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 a water pump and is also a mature existing technology and will not be described in detail in this embodiment.

[0030] 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.

[0031] The inner cavities of the described stand 11 and stand 2 14 are both provided with a transition cavity 23, the inner wall of the transition cavity 23 is provided with a dynamic ring 30 which is contact-sealed with a sealing bevel 22, one side of the transition cavity 23 is connected with an oil pump 24, one side of the sealing bevel 22 is provided with a connecting pipe 28 which is connected 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, oil tanks 2 43 are fixed on both sides of the turntable support plate 5, and the oil pump 24 is connected to the oil tank 2 43.

[0032] 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.

[0033] The inner wall of the transition chamber 23 is rotatably connected with 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 with 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 moving ring 30 is slidably connected to the limit plate 29 through a limit rod 27.

[0034] When the connecting frame 12 rotates to adjust the angle posture of the workpiece, 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 self-rotation drive source 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.

[0035] In addition, the 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, while also being able to compensate for the wear of the dynamic ring 30 caused by friction, thereby preventing oil leakage.

[0036] 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 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 set in two.

[0037] 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 with a piston 32 , the top of the piston 32 is rotatably connected with 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 .

[0038] When negative pressure appears in the oil chamber 31, the piston 32 moves downward, thereby pulling the two slides 34 toward the middle through the connecting rod 33. When approaching, the multiple semicircular clamping tables 35 rotate and contact with both sides of the workpiece to achieve clamping.

[0039] This device, by providing a slide 34 and a multi-stage semicircular clamping platform 35, can utilize the characteristics of the multi-stage semicircular clamping platform 35 that can rotate relative to each other so that the clamping points can be switched at will, so that they can fit the side of the special shape and ensure stable clamping.

[0040] 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.

[0041] 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 with 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, thereby 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.

[0042] 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.

[0043] 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 stand 11 is connected to the hydraulic telescopic rod 37, and the connecting pipe 28 at the stand 2 14 is connected to the hydraulic motor 20.

[0044] The present 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, so that 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.

[0045] 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, the sleeve 39 is fixed to the bottom outer wall of the rotating drum 17, and 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.

[0046] 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.

[0047] 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 .

[0048] 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 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 driving source for the self-rotation of the workpiece is in a fixed state at this time. At the same time, when the moving 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 moving ring 30 and the transition chamber 23. When the hydraulic telescopic rod 37 is extended and retracted, it can drive the rotating drum 17 The hydraulic cylinder 17 is lifted and lowered, 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 with the inner cavity of the fixed cylinder 15. Therefore, when the rotating cylinder 17 moves up, the piston 32 will descend, 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 two pistons 32 to move while allowing the two pistons 32 to move asynchronously. 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 tables 35 will rotate and contact with both sides of the workpiece to achieve clamping.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

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 plate (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-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-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 a tool changing function of the spindle box (9).

2. The inverted T-shaped cross slide vertical five-axis machining center according to claim 1, characterized in that: The five-axis cradle turntable (6) comprises a frame 1 (11) fixed to one end of a turntable support plate (5) and a frame 2 (14) fixed to the other end of the turntable support plate (5), and a same connecting frame (12) is fixed to the opposite side of the frame 1 (11) and the frame 2 (14), and a rotating turntable (13) having the ability to self-rotate and capable of clamping a workpiece is arranged on the top of the connecting frame (12).

3. The inverted T-shaped cross slide vertical five-axis machining center according to claim 2 is characterized in that: The self-rotating turntable (13) comprises 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) which is sealed and movably matched with the fixed cylinder (15) is fixed to the end surface of the rotating cylinder (17), and a clamping assembly (18) for clamping a workpiece is arranged 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), and the output shaft of the hydraulic motor (20) is connected to the rotating cylinder (17) through a transmission shaft (21).

4. The inverted T-shaped cross slide vertical five-axis machining center according to claim 3 is characterized in that: A shaft seal (36) is provided between the transmission shaft (21) and the fixed cylinder (15).

5. The inverted T-shaped cross slide vertical five-axis machining center according to claim 3 is characterized in that: 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 provided with a dynamic ring (30) which is contact-sealed with the 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) which is in communication 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), both sides of the turntable support plate (5) are fixed with an oil tank 2 (43), and the oil pump (24) is connected to the oil tank 2 (43).

6. The inverted T-shaped cross slide vertical five-axis machining center according to claim 5, characterized in that: The inner wall of the transition chamber (23) is rotatably connected to a connecting pipe (28), the end surface 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 surface of the sealing inclined surface (22), and a limiting plate (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 plate (29) via a limiting rod (27).

7. The inverted T-shaped cross slide vertical five-axis machining center according to claim 6, 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.

8. The inverted T-shaped cross slide vertical five-axis machining center according to claim 7, characterized in that: The inner wall of the rotating cylinder (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 table (34).

9. The inverted T-shaped cross slide vertical five-axis machining center according to claim 8, characterized in that: 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 1 (19) is buckled on the outer wall of the bottom of the rotating cylinder (17), and the other end of the spring 1 (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 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 pipe (28) at the first platform (11) is connected to the hydraulic telescopic rod (37), and the pipe (28) at the second platform (14) is connected to the hydraulic motor (20).

10. The inverted T-shaped cross slide vertical five-axis machining center according to claim 4, characterized in that: The transmission shaft (21) comprises a transmission shaft (38) and a shaft sleeve (39), wherein the transmission shaft (38) is fixed to the outer wall of the rotating shaft of the hydraulic motor (20), and the shaft sleeve (39) is fixed to the outer wall of the bottom of the rotating drum (17). A key-shaped groove (41) is formed on the side wall of the transmission shaft (38), and a key-shaped protrusion (40) which is loosely matched with the key-shaped groove (41) is fixed on the inner wall of the shaft 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 matched with the outer wall of the connecting frame (12) through a synchronous belt (44).

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