CN113681324A

CN113681324A - Four-axis revolving stage hydraulic clamping device who has adjustment mechanism for digit control machine tool

Info

Publication number: CN113681324A
Application number: CN202111057969.9A
Authority: CN
Inventors: 施国锋; 邵志达; 朱振旗
Original assignee: Wenzhou Tanxing Pml Precision Mechanism Ltd
Current assignee: Wenzhou Tanxing Pml Precision Mechanism Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-11-23

Abstract

The invention relates to the technical field of numerical control equipment fixtures, in particular to a four-axis rotary table hydraulic clamping device with an adjusting mechanism for a numerical control machine tool, which comprises a rotary table, wherein a driving assembly is connected above the rotary table, the driving assembly comprises a shell arranged above the rotary table, a motor is arranged inside the shell, the output end of the motor is connected with a first bevel gear, a second bevel gear is meshed outside the first bevel gear, a hydraulic assembly comprises a hydraulic telescopic cylinder, the input end of the hydraulic telescopic cylinder is connected with a first guide pipe, the other end of the first guide pipe is connected with a second guide pipe through a control valve, and the other end of the second guide pipe is connected with a control pump. The invention can realize synchronous clamping of irregular workpieces, control the valve, and timely cut off the hydraulic supply to the hydraulic telescopic cylinder, thereby avoiding the damage of the workpiece surface caused by excessive extrusion of the clamping assembly.

Description

Four-axis revolving stage hydraulic clamping device who has adjustment mechanism for digit control machine tool

Technical Field

The invention relates to the technical field of numerical control equipment fixtures, in particular to a four-axis turntable hydraulic clamping device with an adjusting mechanism for a numerical control machine tool.

Background

The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool provided with a program control system, wherein the control system can logically process a program specified by a control code or other symbolic instructions, decode the program, represent the decoded program by coded numbers, and input the coded program into a numerical control device through an information carrier, and the numerical control device is usually matched with a hydraulic clamping device to realize fixed clamping of a workpiece in the using process, so that the processing of equipment is facilitated, and the most widely four-axis turntable hydraulic clamping device is adopted in the current mainstream market.

However, when the existing four-axis turntable hydraulic clamping device is used, synchronous automatic clamping of rectangular workpieces cannot be realized, during clamping, the workpiece is usually clamped fixedly in a unilateral clamping mode, so that when the irregular rectangular workpiece is clamped, the synchronous clamping of the short side and the long side of the workpiece can not be realized, so that when the workpiece is clamped, the clamping efficiency is reduced, the working efficiency is further reduced, and in the traditional hydraulic clamping mode, when the workpiece is clamped, the hydraulic telescopic distance is fixed, so that the clamping applicability of the device is reduced, meanwhile, the automatic clamping of irregular rectangles can not be realized while the hydraulic synchronous clamping is carried out, therefore, when the hydraulic clamping mode is used for clamping a workpiece, the surface of the workpiece is easily damaged due to excessive hydraulic clamping, therefore, a four-axis turntable hydraulic clamping device with an adjusting mechanism for a numerical control machine tool is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a four-axis turntable hydraulic clamping device with an adjusting mechanism for a numerical control machine tool, which aims to solve the problems that the hydraulic synchronous clamping cannot realize the automatic clamping of irregular rectangles and the surface of a workpiece is easily damaged due to the excessive hydraulic clamping in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a four-axis revolving stage hydraulic clamping device with adjustment mechanism for digit control machine tool includes:

the device comprises a rotating platform, a driving assembly is connected above the rotating platform, the driving assembly comprises a shell arranged above the rotating platform, a motor is arranged inside the shell, the output end of the motor is connected with a first bevel gear, a second bevel gear is meshed with the outside of the first bevel gear, a first lead screw is fixedly connected inside the second bevel gear, a first nut pair is meshed with the outside of the first lead screw, and a hydraulic assembly is arranged above the first nut pair;

the hydraulic assembly comprises a hydraulic telescopic cylinder, the input end of the hydraulic telescopic cylinder is connected with a first guide pipe, the other end of the first guide pipe is connected with a second guide pipe through a control valve, and the other end of the second guide pipe is connected with a control pump;

the clamping assembly comprises a clamping plate, the clamping plate is connected to the ejection end of the hydraulic telescopic cylinder, the inner portion of the clamping plate is movably connected with an extrusion plate, the outer wall of the extrusion plate is connected with an adjusting assembly, the adjusting assembly comprises a moving frame, a rack is connected to the inner portion of the moving frame, a transmission gear is meshed in the rack, a second lead screw is arranged at the center of the transmission gear, and a control valve is arranged below the second lead screw.

Preferably, the driving assembly comprises a housing, a motor is arranged at the center of the housing, a transmission assembly is arranged outside the first bevel gear, a support frame is fixedly connected to the outside of the motor, four groups of transmission assemblies are arranged outside the first bevel gear and are uniformly distributed outside the first bevel gear, and the output end of the motor is rotatably connected with the inner wall of the housing through a ball bearing.

Preferably, the transmission assembly comprises a bearing seat, the bearing seat is fixedly connected to the inner wall of the shell, a first lead screw penetrates through the bearing seat, a guide shaft is arranged below the first lead screw, a connecting frame is fixedly connected to the upper portion of a first nut pair outside the first lead screw, and a sliding guide plate is fixedly connected to the top of the connecting frame.

Preferably, one end of the first screw is in meshed connection with the first bevel gear through a second bevel gear, the other end of the first screw is in rotating connection with the inner wall of the shell through a ball bearing, the guide shaft is fixedly connected between the bearing seat and the shell, and the outer portion of the guide shaft is connected with the first nut pair through a sliding sleeve.

Preferably, the inside of link is provided with the control valve, the below of slip deflector is provided with the leading wheel, and the upper surface of leading wheel and casing contacts each other, the top fixedly connected with hydraulic telescoping cylinder of slip deflector, the guiding axle is sliding connection with outside slip cap, the outward surface of guiding axle is smooth form.

Preferably, the hydraulic assemblies are provided with two groups, each group of hydraulic assemblies is provided with two hydraulic telescopic cylinders and a first guide pipe, and the receiving end of the control pump is connected with a controller.

Preferably, the holding groove has been seted up to the inside of grip block, the outer wall of grip block runs through there is the activity post to see, the pressure spring has been cup jointed to the outside of activity post, the one end fixedly connected with stripper plate of activity post, the below of stripper plate is connected with adjusting part.

Preferably, the standing groove is step-shaped, the below center of grip block is seted up flutedly, the external diameter of standing groove equals the external diameter of stripper plate, the internal diameter of standing groove is less than the diameter of stripper plate, the activity post is provided with four groups with the pressure spring altogether, and four activity posts with one end fixedly connected with stripper plate, and the thickness of stripper plate is less than the first step thickness of standing groove.

Preferably, the movable frame is fixedly connected to the lower edge of the extrusion plate, one end of the movable frame is of a U-shaped structure, the other end of the movable frame is connected to the lower portion of the extrusion plate in a triangular shape, a second nut pair is fixedly connected to the inner wall of the transmission gear, and a second lead screw is meshed inside the second nut pair.

Preferably, the outside of removing the frame is sliding connection through slider and link, the one side inner wall fixedly connected with rack of removing the frame, the vice swing joint of second nut is at the top of control valve, the bottom fixedly connected with rubber buffer to the inside of control valve of second lead screw.

Compared with the prior art, the invention has the beneficial effects that:

1. this digit control machine tool is with four-axis revolving stage hydraulic pressure clamping device who has adjustment mechanism, first bevel gear's outside meshing has second bevel gear, second bevel gear's the first lead screw of inside fixedly connected with, the outside meshing of first lead screw has first nut pair, the vice top of first nut is provided with hydraulic assembly, rotation through first bevel gear can realize meshing rotation to second bevel gear all around, thereby the realization is to the rotation of first lead screw, further can realize the vice synchronous centre gripping of first nut, thereby can realize synchronous centre gripping all around and handle, improve device's clamping efficiency, cooperate the setting of top hydraulic assembly and centre gripping subassembly simultaneously, further realize carrying out synchronous centre gripping to anomalous work piece.

2. The four-shaft turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that the input end of a hydraulic telescopic cylinder is connected with a first guide pipe, the other end of the first guide pipe is connected with a second guide pipe through a control valve, the other end of the second guide pipe is connected with a control pump, the control pump can synchronously drive the hydraulic telescopic cylinders at two ends, when a clamping assembly driven by the hydraulic telescopic cylinder at one end is firstly clamped with a workpiece, the control valve can be closed through contraction of the clamping assembly, so that hydraulic supply of the hydraulic telescopic cylinder at the side by the control pump is cut off, hydraulic output by the control pump can be conveyed to the hydraulic telescopic cylinder at the other side only, so that the hydraulic telescopic cylinder at the other side is lifted, further clamping of the other end of the workpiece is realized through lifting of the clamping assembly, and hydraulic supply is cut off after clamping and fastening, thereby avoiding the hydraulic excessive extrusion and avoiding the surface of the workpiece from being damaged.

3. This digit control machine tool is with four-axis revolving stage hydraulic pressure clamping device who has adjustment mechanism, the inside swing joint of grip block has the stripper plate, the outer wall connection of stripper plate has adjusting part, adjusting part is including removing the frame, the internal connection of removing the frame has the rack, the inside meshing of rack has drive gear, drive gear's center is provided with the second lead screw, the below of second lead screw is provided with the control valve, when stripper plate and workpiece surface extrusion contact each other, can contract in the inside of grip block, and then can drive the removal of removal frame through the removal of grip block, thereby drive gear through the rack and rotate, thereby can realize the upper and lower of second lead screw through the second nut is vice, and then realize closing the control valve, can in time cut off the hydraulic pressure supply to hydraulic telescoping cylinder, avoid the excessive extrusion of grip block to lead to workpiece surface impaired.

Drawings

FIG. 1 is a schematic diagram of the internal part distribution of the present invention;

FIG. 2 is a schematic view of the overall structure of the transmission assembly of the present invention;

FIG. 3 is a schematic view of the transmission assembly arrangement of the present invention;

FIG. 4 is a schematic view of the overall structure of the present invention;

FIG. 5 is a schematic diagram of the overall structure of the hydraulic assembly of the present invention;

FIG. 6 is a schematic view of the overall structure of the adjustment assembly of the present invention;

FIG. 7 is a schematic view of the overall structure of the clamping assembly of the present invention;

FIG. 8 is a schematic view of a rack and pinion connection of the present invention;

fig. 9 is an overall sectional structure diagram of the control valve of the present invention.

In the figure: 1. a rotating table; 2. a drive assembly; 21. a housing; 22. a motor; 23. a first bevel gear; 24. a transmission assembly; 241. a bearing seat; 242. a first lead screw; 243. a first nut pair; 244. a second bevel gear; 245. a guide shaft; 246. a connecting frame; 247. a sliding guide plate; 25. a support frame; 3. a hydraulic assembly; 31. a hydraulic telescopic cylinder; 32. a first conduit; 33. a second conduit; 34. controlling the pump; 4. a clamping assembly; 41. a clamping plate; 42. a placement groove; 43. a movable post; 44. a pressure spring; 45. a pressing plate; 46. an adjustment assembly; 461. a movable frame; 462. a rack; 463. a transmission gear; 464. a second lead screw; 465. a control valve; 466. and a second nut pair.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an embodiment of the present invention is shown:

a four-axis revolving stage hydraulic clamping device with adjustment mechanism for digit control machine tool includes:

the automatic transmission device comprises a rotating platform 1, a driving component 2 is connected above the rotating platform 1, the driving component 2 comprises a shell 21 arranged above the rotating platform 1, a motor 22 is arranged inside the shell 21, the output end of the motor 22 is connected with a first bevel gear 23, a second bevel gear 244 is meshed with the outside of the first bevel gear 23, a first lead screw 242 is fixedly connected inside the second bevel gear 244, a first nut pair 243 is meshed with the outside of the first lead screw 242, a hydraulic component 3 is arranged above the first nut pair 243, the motor 22 can be driven to be started to drive the first bevel gear 23 to rotate, so that the surrounding bearing seats 241 are driven, the work of a transmission component 24 is further realized, and a controller is connected outside the motor 22 to realize the automatic control and starting;

the hydraulic component 3 comprises a hydraulic telescopic cylinder 31, the input end of the hydraulic telescopic cylinder 31 is connected with a first conduit 32, the other end of the first conduit 32 is connected with a second conduit 33 through a control valve 465, the other end of the second conduit 33 is connected with a control pump 34, and through the arrangement of the structure, hydraulic transmission and conveying can be realized through the control pump 34, further, the workpiece can be further clamped through jacking of the hydraulic telescopic cylinder 31, and further clamping of the workpiece can be effectively realized;

the clamping assembly 4 comprises a clamping plate 41, the clamping plate 41 is connected to the ejection end of the hydraulic telescopic cylinder 31, a squeezing plate 45 is movably connected inside the clamping plate 41, an adjusting assembly 46 is connected to the outer wall of the squeezing plate 45, the adjusting assembly 46 comprises a moving frame 461, a rack 462 is connected inside the moving frame 461, a transmission gear 463 is meshed inside the rack 462, a second lead screw 464 is arranged in the center of the transmission gear 463, a control valve 465 is arranged below the second lead screw 464, clamping of a workpiece can be effectively realized through the structure, the squeezing plate 45 is firstly contacted with the surface of the workpiece, in the clamping process, the squeezing plate 45 is contracted inside the placing groove 42, and then the moving frame 461 can be moved, so that the transmission gear 463 can be rotated through the rack 462, and the second lead screw 464 is driven to move up and down through a second nut pair 466 in the center of the squeezing plate 45, thereby realizing the opening and closing process of the control valve 465.

Further, drive assembly 2 includes casing 21, the center of casing 21 is provided with motor 22, first bevel gear 23's outside is provided with drive assembly 24, motor 22's outside fixedly connected with support frame 25, drive assembly 24 is provided with four groups altogether, and evenly distributed is in first bevel gear 23's outside, motor 22's output is the rotation through ball bearing and casing 21's inner wall and is connected, setting through this structure, can realize the drive to drive assembly 24, and can realize the synchronous centre gripping all around of device, thereby realize the synchronous centre gripping to rectangular workpiece.

Further, transmission assembly 24 includes bearing frame 241, bearing frame 241 fixed connection is at the inner wall of casing 21, first lead screw 242 has been run through to the inside of bearing frame 241, the below of first lead screw 242 is provided with guiding axle 245, the top fixedly connected with link 246 of the vice 243 of first nut in the outside of first lead screw 242, the top fixedly connected with slip deflector 247 of link 246, setting through this structure, can realize the rotation of bearing frame 241 when first bevel gear 23 is pivoted, further drive first lead screw 242 and rotate, thereby drive the vice 243 of its outside first nut and remove, further drive link 246 and the slip deflector 247 of its top and remove, thereby the realization is moved the hydraulic telescoping cylinder 31 of top.

Furthermore, one end of the first lead screw 242 is in meshed connection with the first bevel gear 23 through the second bevel gear 244, the other end of the first lead screw 242 is in rotational connection with the inner wall of the housing 21 through a ball bearing, the guide shaft 245 is fixedly connected between the bearing seat 241 and the housing 21, the outer portion of the guide shaft 245 is connected with the first nut pair 243 through a sliding sleeve, and the first nut pair 243 is guaranteed to move stably and prevented from rotating circumferentially through the guide of the guide shaft 245.

Further, the inside of link 246 is provided with control valve 465, the below of slip deflector 247 is provided with the leading wheel, and the upper surface of leading wheel and casing 21 contacts each other, can further reduce the friction of slip deflector 247 and casing 21, improve the smoothness nature that slip deflector 247 removed, the stability and the high efficiency that top hydraulic telescoping cylinder 31 removed have further been improved, the top fixedly connected with hydraulic telescoping cylinder 31 of slip deflector 247, guiding axle 245 is sliding connection with outside sliding sleeve, the outward surface of guiding axle 245 is smooth form.

Furthermore, the hydraulic assemblies 3 are provided with two groups, each group of hydraulic assemblies 3 is provided with two hydraulic telescopic cylinders 31 and a first conduit 32, and the receiving end of the control pump 34 is connected with a controller, so that the automatic control of the control pump 34 is further realized.

Further, the standing groove 42 has been seted up to the inside of grip block 41, the outer wall of grip block 41 runs through there is movable post 43 to see, the pressure spring 44 has been cup jointed to the outside of activity post 43, the one end fixedly connected with stripper plate 45 of activity post 43, stripper plate 45's below is connected with adjusting part 46, setting through this structure, can realize the drive to adjusting part 46, when stripper plate 45 and workpiece surface contact, can realize the shrink to stripper plate 45 at the extruded in-process, thereby in the time of stripper plate 45 removes, the realization is to the removal of removal frame 461.

Further, the placing groove 42 is step-shaped, a groove is formed in the center of the lower portion of the clamping plate 41, the outer diameter of the placing groove 42 is equal to the outer diameter of the extruding plate 45, the inner diameter of the placing groove 42 is smaller than the diameter of the extruding plate 45, the extruding plate 45 can be effectively contracted, the horizontal plane of the extruding plate 45 after contraction and the horizontal plane of the clamping plate 41 are located on the same plane, in the subsequent clamping work, clamping rollers can be arranged on the clamping surfaces of the placing groove 42 and the extruding plate, therefore, the workpiece can be centered and clamped through rotation of the clamping rollers when clamped, four groups of movable columns 43 and four groups of pressure springs 44 are arranged, the extruding plates 45 are fixedly connected to the same ends of the four movable columns 43, the movable columns 43 and the pressure springs 44 can be arranged to achieve stability of movement of the extruding plates 45, and the thickness of the extruding plates 45 is smaller than the thickness of the first step of the placing groove 42.

Further, the movable frame 461 is fixedly connected to the lower edge of the extrusion plate 45, one end of the movable frame 461 is in a U-shaped structure, the other end of the movable frame 461 is in a triangular shape and is connected below the extrusion plate 45, the inner wall of the transmission gear 463 is fixedly connected with a second nut pair 466, a second lead screw 464 is meshed inside the second nut pair 466, the second nut pair 466 can be driven to rotate through rotation of the transmission gear 463, and then the second lead screw 464 can be moved up and down, so that opening and closing control of the lower control valve 465 is realized, and cutting of hydraulic transmission between the first guide pipe 32 and the second guide pipe 33 is realized.

Further, the outside of moving frame 461 is sliding connection with link 246 through the slider, one side inner wall fixedly connected with rack 462 of moving frame 461, second nut pair 466 swing joint is at the top of control valve 465, the bottom fixedly connected with rubber buffer to the inside of control valve 465 of second lead screw 464, can realize closing the sealing of control valve 465 through the rubber buffer of its tip when second lead screw 464 removes to realize cutting off of control valve 465.

The working principle is as follows: when the hydraulic telescopic cylinder 31 is used, a workpiece to be machined is firstly placed in the center above the shell 21, the internal motor 22 can work through external control, the first bevel gear 23 is driven to rotate, the bearing seat 241 can be driven to rotate, the first lead screw 242 can be driven to rotate while the bearing seat 241 rotates, the first nut pair 243 outside the bearing seat can be driven to move, the hydraulic telescopic cylinder 31 above the bearing seat can be driven to move while the first nut pair 243 moves, the pump 34 can be controlled to work at the same time, hydraulic transmission can be simultaneously carried out on the hydraulic telescopic cylinders 31 at two ends through the second guide pipe 33, and the workpiece can further move while matching with the movement of the first nut pair 243.

When the first nut pair 243 drives the clamping assembly 4 at the end of the hydraulic telescopic cylinder 31 to contact with the surface of a workpiece, the extrusion plate 45 at one side contacting with the workpiece can contract inside the placing groove 42 while moving in an extruding manner, the moving frame 461 at the lower side can be further driven to move by the movement of the extrusion plate 45, the transmission gear 463 can be further driven to rotate by the rack 462, the second screw rod 464 can be driven to move up and down by the second nut pair 466 inside the extrusion plate, the control valve 465 can be further closed, the hydraulic supply of the hydraulic telescopic cylinder 31 at the side by the control pump 34 is cut off, at the moment, the motor 22 also stops working, so that one end of the workpiece can be clamped by the clamping assembly 4 at the side, the control pump 34 can continue to clamp the workpiece, the hydraulic supply can only transmit the hydraulic pressure to the hydraulic telescopic cylinder 31 at the other side, and the clamping assembly 4 at the side can be further driven to continue to move, thereby clamping the other end of the workpiece, and clamping the workpiece when the pressing plate 45 on the side is contracted inside the placing groove 42.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Claims

1. The utility model provides a digit control machine tool is with four-axis revolving stage hydraulic clamping device who has adjustment mechanism which characterized in that includes:

the hydraulic assembly comprises a rotating platform (1), a driving assembly (2) is connected above the rotating platform (1), the driving assembly (2) comprises a shell (21) installed above the rotating platform (1), a motor (22) is arranged inside the shell (21), the output end of the motor (22) is connected with a first bevel gear (23), a second bevel gear (244) is meshed outside the first bevel gear (23), a first lead screw (242) is fixedly connected inside the second bevel gear (244), a first nut pair (243) is meshed outside the first lead screw (242), and a hydraulic assembly (3) is arranged above the first nut pair (243);

the hydraulic assembly (3) comprises a hydraulic telescopic cylinder (31), the input end of the hydraulic telescopic cylinder (31) is connected with a first guide pipe (32), the other end of the first guide pipe (32) is connected with a second guide pipe (33) through a control valve (465), and the other end of the second guide pipe (33) is connected with a control pump (34);

the clamping assembly (4), the clamping assembly (4) includes a clamping plate (41), the clamping plate (41) is connected at the ejecting end of the hydraulic telescopic cylinder (31), the inside swing joint of clamping plate (41) has a stripper plate (45), the outer wall of stripper plate (45) is connected with adjusting assembly (46), adjusting assembly (46) is including moving frame (461), the internal connection of moving frame (461) has rack (462), the internal meshing of rack (462) has drive gear (463), the center of drive gear (463) is provided with second lead screw (464), the below of second lead screw (464) is provided with control valve (465).

2. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the driving assembly (2) comprises a shell (21), a motor (22) is arranged at the center of the shell (21), a transmission assembly (24) is arranged outside the first bevel gear (23), a supporting frame (25) is fixedly connected to the outside of the motor (22), the transmission assembly (24) is provided with four groups, the four groups are uniformly distributed outside the first bevel gear (23), and the output end of the motor (22) is rotatably connected with the inner wall of the shell (21) through a ball bearing.

3. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the transmission assembly (24) comprises a bearing seat (241), the bearing seat (241) is fixedly connected to the inner wall of the shell (21), a first lead screw (242) penetrates through the inside of the bearing seat (241), a guide shaft (245) is arranged below the first lead screw (242), a connecting frame (246) is fixedly connected to the upper portion of a first nut pair (243) outside the first lead screw (242), and a sliding guide plate (247) is fixedly connected to the top portion of the connecting frame (246).

4. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: one end of the first lead screw (242) is in meshed connection with the first bevel gear (23) through a second bevel gear (244), the other end of the first lead screw (242) is in rotary connection with the inner wall of the shell (21) through a ball bearing, the guide shaft (245) is fixedly connected between the bearing seat (241) and the shell (21), and the outer portion of the guide shaft (245) is connected with the first nut pair (243) through a sliding sleeve.

5. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the inside of link (246) is provided with control valve (465), the below of slip deflector (247) is provided with the leading wheel, and the upper surface of leading wheel and casing (21) contacts each other, the top fixedly connected with hydraulic telescoping cylinder (31) of slip deflector (247), guiding axle (245) is sliding connection with outside sliding sleeve, the outward surface of guiding axle (245) is smooth form.

6. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the hydraulic assembly (3) is provided with two sets, each set of hydraulic assembly (3) is provided with two hydraulic telescopic cylinders (31) and a first guide pipe (32), and the receiving end of the control pump (34) is connected with a controller.

7. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the clamping plate is characterized in that a placing groove (42) is formed in the clamping plate (41), a movable column (43) penetrates through the outer wall of the clamping plate (41), a pressure spring (44) is sleeved outside the movable column (43), one end of the movable column (43) is fixedly connected with an extrusion plate (45), and an adjusting assembly (46) is connected below the extrusion plate (45).

8. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the utility model discloses a pressure spring, including holding plate (41), standing groove (42), pressure spring (44), standing groove (42) are the step form, the below center of grip block (41) is seted up flutedly, the external diameter of standing groove (42) equals the external diameter of stripper plate (45), the internal diameter of standing groove (42) is less than the diameter of stripper plate (45), activity post (43) and pressure spring (44) are provided with four groups altogether, and four activity posts (43) with one end fixedly connected with stripper plate (45), and the thickness of stripper plate (45) is less than the first step thickness of standing groove (42).

9. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the movable frame (461) is fixedly connected to the lower edge of the extrusion plate (45), one end of the movable frame (461) is of a U-shaped structure, the other end of the movable frame (461) is connected to the lower portion of the extrusion plate (45) in a triangular shape, a second nut pair (466) is fixedly connected to the inner wall of the transmission gear (463), and a second lead screw (464) is meshed in the second nut pair (466).

10. The four-axis turntable hydraulic clamping device with the adjusting mechanism for the numerical control machine tool is characterized in that: the outside of removing frame (461) is sliding connection through slider and link (246), the one side inner wall fixedly connected with rack (462) of removing frame (461), the top of vice (466) swing joint of second nut at control valve (465), the bottom fixedly connected with rubber buffer to the inside of control valve (465) of second lead screw (464).