Clamping mechanism for CNC machining center

Abstract

The utility model discloses a clamping mechanism for a CNC (Computer Numerical Control) machining center, which comprises a bottom plate, the surface of the bottom plate is fixedly connected with a supporting column, the surface of the bottom plate is fixedly connected with a supporting plate, the top surface of the supporting plate is fixedly connected with a fixed seat, and a lifting assembly is started to drive a workpiece to move to a proper clamping height; when the machining face of the workpiece needs to be adjusted, an electric push rod is started to push a first clamping plate through a connecting frame to transversely clamp and fix the workpiece, and meanwhile a driving assembly is started to drive a longitudinal clamping mechanism to longitudinally clamp and fix the workpiece; the machining surface of the workpiece can be rotationally adjusted by rotating the clamping mechanism, so that the purpose of automatically overturning and adjusting the machining surface of the workpiece conveniently is achieved, and the problem that the machining flexibility of the workpiece is greatly reduced due to the fact that the machining surface of the workpiece needs to be manually and repeatedly adjusted and fixed by an existing clamping mechanism is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control CNC machining center technical field especially, relates to a kind of clamping mechanism for numerical control CNC machining center. BACKGROUND

[0002] Numerical control CNC machining center, namely computer numerical control machining center, is highly automated machine tool equipment. It is mainly composed of mechanical equipment and numerical control system, with self-contained tool magazine, with automatic tool changing function, can continuously carry out drilling, boring, milling, hinge, tapping and other processing of multiple processes. It is widely used in mechanical manufacturing, die manufacturing, aerospace and other fields, to meet the high precision and reliability requirements of parts.

[0003] And clamping mechanism as important component in CNC machining center, its main role is to clamp and fix workpiece, to improve the machining accuracy and machining stability of workpiece, and workpiece is usually machined on different faces during drilling and milling, and the existing clamping mechanism is difficult to automatically adjust the machining surface of workpiece, usually need to manually adjust and fix workpiece multiple times, then different faces of workpiece can be drilled and milled, greatly reduce the processing flexibility. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of clamping mechanism for numerical control CNC machining center, to solve the problems raised in the above background art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of clamping mechanism for numerical control CNC machining center, including bottom plate, the bottom plate surface is fixedly connected with support column, the bottom plate surface is fixedly connected with support plate, the support plate top surface is fixedly connected with fixed seat, the fixed seat inner wall is rotatably connected with limit ring, the limit ring inner wall is fixedly connected with electric push rod, and electric push rod surface is rotatably connected with fixed seat inner wall, the electric push rod output end is fixedly connected with connecting frame, the connecting frame inner wall is fixedly connected with first clamping plate, the first clamping plate surface is provided with longitudinal clamping mechanism, the first clamping plate left side is provided with drive assembly, the bottom plate bottom is provided with adjusting mechanism, the bottom plate bottom is provided with lifting assembly.

[0007] Preferably, the longitudinal clamping mechanism is composed of limit sliding slot, second clamping plate and threaded sleeve, the limit sliding slot is throughly provided on the first clamping plate surface, the second clamping plate is slidably connected with the first clamping plate surface, and the second clamping plate is slidably connected with the limit sliding slot inner wall, and the threaded sleeve is fixedly connected with the left side of the second clamping plate.

[0008] Preferably, the driving assembly is composed of a first double-shaft motor, a threaded rod and a fixed ring, the first double-shaft motor is fixedly connected with the left side of the first clamping plate, the threaded rod is fixedly connected with the output end of the first double-shaft motor, and the surface of the threaded rod is in threaded connection with the inner wall of the threaded sleeve, and the fixed ring is fixedly connected with the left side of the first clamping plate, and the inner wall of the fixed ring is in rotational connection with the threaded rod.

[0009] Preferably, the adjusting mechanism is composed of a second double-shaft motor, a driving wheel, a transmission belt and a driven wheel, the second double-shaft motor is fixedly connected with the bottom surface of the bottom plate, the inner wall of the driving wheel is fixedly connected with the output end of the second double-shaft motor, the transmission belt is in engagement with the inner wall of the driving wheel, the inner wall of the driven wheel is fixedly connected with the surface of the electric push rod, and the inner wall of the driven wheel is in engagement with the transmission belt.

[0010] Preferably, the lifting assembly is composed of a fixed frame, a hydraulic push rod and a lifting disc, the fixed frame is fixedly connected with the bottom surface of the bottom plate, the hydraulic push rod is fixedly connected with the inner wall of the fixed frame, and the output end of the hydraulic push rod is in sliding connection with the inner wall of the bottom plate, the lifting disc is fixedly connected with the output end of the hydraulic push rod, and the lifting disc is overlapped with the top surface of the bottom plate.

[0011] Preferably, the first clamping plate is in rectangular shape, and the first clamping plate is made of metal material.

[0012] Preferably, the number of the driving wheels is plural, and the plural driving wheels are located at the output ends on both sides of the second double-shaft motor.

[0013] Compared with the prior art, the number control CNC machining center clamping mechanism has the advantages that the workpiece is moved to a suitable clamping height by starting the lifting assembly, the first clamping plate is pushed to transversely clamp and fix the workpiece by the electric push rod through the connecting frame, the driving assembly is started to drive the longitudinal clamping mechanism to longitudinally clamp and fix the workpiece, the workpiece rotating is driven by starting the adjusting mechanism through the electric push rod, the limiting ring, the fixed seat, the connecting frame and the first clamping plate, and the machining surface of the workpiece can be rotated and adjusted, the target of automatically turning and adjusting the machining surface of the workpiece is achieved, and the problem that the machining flexibility of the workpiece is greatly reduced due to the fact that the machining surface of the workpiece needs to be manually adjusted for multiple times by the prior clamping mechanism is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure front view of the utility model;

[0015] Figure 2 It is a structure A place structure enlarged view of the utility model;

[0016] Figure 3 It is a structure rear view of the utility model;

[0017] Figure 4The utility model discloses a structure vertical section view.

[0018] Figure 5 The utility model discloses structure B place structure enlarged view.

[0019] In the drawing: 1, bottom plate, 2, support column, 3, support plate, 4, fixed seat, 5, limit ring, 6, electric push rod, 7, connecting frame, 8, first clamping plate, 9, limit sliding slot, 10, second clamping plate, 11, threaded sleeve, 12, first double shaft motor, 13, threaded rod, 14, fixed ring, 15, second double shaft motor, 16, driving wheel, 17, transmission belt, 18, driven wheel, 19, fixed frame, 20, hydraulic push rod, 21, lifting disc. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0021] Refer to Figures 1-5A kind of clamping mechanism for numerical control CNC machining center, including bottom plate 1, support column 2 is fixedly connected on the surface of bottom plate 1, support plate 3 is fixedly connected on the surface of bottom plate 1, fixed seat 4 is fixedly connected on the top surface of support plate 3, limit ring 5 is rotatably connected in the inner wall of fixed seat 4, electric push rod 6 is fixedly connected in the inner wall of limit ring 5, and electric push rod 6 surface is rotatably connected with the inner wall of fixed seat 4, the output end of electric push rod 6 is fixedly connected with connecting frame 7, the inner wall of connecting frame 7 is fixedly connected with first clamping plate 8, first clamping plate 8 is rectangular, and first clamping plate 8 is made of metal material, and the first clamping plate 8 made of metal material is more durable with higher strength and not easy to deform and damage after stress, and the surface of first clamping plate 8 is provided with longitudinal clamping mechanism, longitudinal clamping mechanism is composed of limit sliding slot 9, second clamping plate 10 and threaded sleeve 11, limit sliding slot 9 is formed in the surface of first clamping plate 8, second clamping plate 10 is slidably connected with the surface of first clamping plate 8, and second clamping plate 10 is slidably connected with the inner wall of limit sliding slot 9, threaded sleeve 11 is fixedly connected with the left side of second clamping plate 10, for longitudinally clamping and fixing workpiece, to avoid the problem that workpiece falls off when turning over, improve the processing stability, the left side of first clamping plate 8 is provided with drive assembly, the bottom surface of bottom plate 1 is provided with adjusting mechanism, adjusting mechanism is composed of second double-shaft motor 15, driving wheel 16, transmission belt 17 and driven wheel 18, the number of driving wheel 16 is multiple, and multiple driving wheel 16 is located at the output end of second double-shaft motor 15 on both sides respectively, for driving multiple electric push rod 6 to rotate synchronously, improve the turning stability of workpiece, second double-shaft motor 15 is fixedly connected with the bottom surface of bottom plate 1, the inner wall of driving wheel 16 is fixedly connected with the output end of second double-shaft motor 15, transmission belt 17 is engaged with the inner wall of driving wheel 16, and the inner wall of driven wheel 18 is fixedly connected with the surface of electric push rod 6, and the inner wall of driven wheel 18 is engaged with transmission belt 17, for driving workpiece to turn over and adjust, improve the processing flexibility of machining center, and the bottom surface of bottom plate 1 is provided with lifting assembly.

[0022] Specifically, drive assembly is composed of first double-shaft motor 12, threaded rod 13 and fixed ring 14, first double-shaft motor 12 is fixedly connected with the left side of first clamping plate 8, threaded rod 13 is fixedly connected with the output end of first double-shaft motor 12, and the surface of threaded rod 13 is threadedly connected with the inner wall of threaded sleeve 11, fixed ring 14 is fixedly connected with the left side of first clamping plate 8, and the inner wall of fixed ring 14 is rotatably connected with threaded rod 13, for driving multiple second clamping plate 10 to move relatively, improve the longitudinal clamping stability of workpiece.

[0023] Specifically, the lifting assembly is composed of a fixed frame 19, a hydraulic push rod 20 and a lifting disc 21, the fixed frame 19 is fixedly connected with the bottom surface of the bottom plate 1, the hydraulic push rod 20 is fixedly connected with the inner wall of the fixed frame 19, and the output end of the hydraulic push rod 20 is slidably connected with the inner wall of the bottom plate 1, the lifting disc 21 is fixedly connected with the output end of the hydraulic push rod 20, and the lifting disc 21 is overlapped with the top surface of the bottom plate 1, for driving the workpiece to move up and down, so as to conveniently adjust the clamping height according to the size of the workpiece, and improve the processing flexibility.

[0024] The electrical components appearing in this document are all electrically connected with the main controller and 220V mains, and the main controller can be a conventional known device such as a computer.

[0025] In use: first, place the workpiece on the surface of the lifting disc 21, start the hydraulic push rod 20 to push the lifting disc 21 and the workpiece upward to the appropriate clamping height, start the electric push rod 6 to push the first clamping plate 8 to transversely clamp and fix the workpiece through the connecting frame 7, after clamping is completed, reset the lifting disc 21 through the hydraulic push rod 20, and at the same time, start the first double-shaft motor 12 to drive the threaded rod 13 to rotate along the inner wall of the fixed ring 14, drive the second clamping plate 10 to longitudinally slide along the inner wall of the limiting sliding groove 9 through the threaded connection between the threaded rod 13 and the threaded sleeve 11, so as to longitudinally clamp and fix the workpiece, and after clamping is completed, the workpiece can be machined by the machining center, when it is necessary to adjust the machining surface of the workpiece, start the second double-shaft motor 15 to drive the driving wheel 16 and the transmission belt 17 to rotate, drive the electric push rod 6 and the limiting ring 5 to rotate along the inner wall of the fixed seat 4 through the meshing between the transmission belt 17 and the driven wheel 18, drive the connecting frame 7, the first clamping plate 8 and the workpiece to rotate through the rotation of the electric push rod 6, so as to rotationally adjust the machining surface of the workpiece.

[0026] In summary, the clamping mechanism of the numerical control CNC machining center can drive the workpiece to move to the appropriate clamping height by starting the lifting assembly, clamp and fix the workpiece longitudinally by starting the electric push rod 6 to push the first clamping plate 8 transversely through the connecting frame 7, and drive the workpiece to rotate by starting the adjustment mechanism through the electric push rod 6, the limiting ring 5, the fixed seat 4, the connecting frame 7 and the first clamping plate 8 when it is necessary to adjust the machining surface of the workpiece, so as to rotationally adjust the machining surface of the workpiece, achieve the goal of automatically flipping and adjusting the machining surface of the workpiece, avoid the problem that the machining flexibility of the workpiece is greatly reduced due to the fact that the existing clamping mechanism needs to manually adjust the machining surface of the workpiece multiple times, and solve the problems raised in the above background art.

[0027] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for a numerical control (CNC) machining center comprising a base plate (1), characterized in that, The surface of the bottom plate (1) is fixedly connected with a support column (2), the surface of the bottom plate (1) is fixedly connected with a support plate (3), the top surface of the support plate (3) is fixedly connected with a fixed seat (4), the inner wall of the fixed seat (4) is rotatably connected with a limiting ring (5), the inner wall of the limiting ring (5) is fixedly connected with an electric push rod (6), and the surface of the electric push rod (6) is rotatably connected with the inner wall of the fixed seat (4), the output end of the electric push rod (6) is fixedly connected with a connecting frame (7), the inner wall of the connecting frame (7) is fixedly connected with a first clamping plate (8), the surface of the first clamping plate (8) is provided with a longitudinal clamping mechanism, the left side of the first clamping plate (8) is provided with a driving assembly, the bottom surface of the bottom plate (1) is provided with an adjusting mechanism, and the bottom surface of the bottom plate (1) is provided with a lifting assembly.

2. A clamping mechanism for a CNC machining center according to claim 1, characterized in that, The longitudinal clamping mechanism is composed of a limiting sliding groove (9), a second clamping plate (10) and a threaded sleeve (11), the limiting sliding groove (9) is formed in the surface of the first clamping plate (8), the surface of the second clamping plate (10) is slidably connected with the first clamping plate (8), and the second clamping plate (10) is slidably connected with the inner wall of the limiting sliding groove (9), and the left side of the second clamping plate (10) is fixedly connected with the threaded sleeve (11).

3. The clamping mechanism for a CNC machining center according to claim 1, characterized in that, The driving assembly is composed of a first double-shaft motor (12), a threaded rod (13) and a fixed ring (14), the left side of the first clamping plate (8) is fixedly connected with the first double-shaft motor (12), the output end of the first double-shaft motor (12) is fixedly connected with the threaded rod (13), and the surface of the threaded rod (13) is threadedly connected with the inner wall of the threaded sleeve (11), and the left side of the first clamping plate (8) is fixedly connected with the fixed ring (14), and the inner wall of the fixed ring (14) is rotatably connected with the threaded rod (13).

4. The clamping mechanism for CNC machining center according to claim 1, characterized in that, The adjusting mechanism is composed of a second double-shaft motor (15), a driving wheel (16), a transmission belt (17) and a driven wheel (18), the bottom surface of the bottom plate (1) is fixedly connected with the second double-shaft motor (15), the inner wall of the driving wheel (16) is fixedly connected with the output end of the second double-shaft motor (15), the transmission belt (17) is engaged with the inner wall of the driving wheel (16), the inner wall of the driven wheel (18) is fixedly connected with the surface of the electric push rod (6), and the inner wall of the driven wheel (18) is engaged with the transmission belt (17).

5. The clamping mechanism for CNC machining center according to claim 1, characterized in that, The lifting assembly is composed of a fixed frame (19), a hydraulic push rod (20) and a lifting disc (21), the bottom surface of the bottom plate (1) is fixedly connected with the fixed frame (19), the inner wall of the fixed frame (19) is fixedly connected with the hydraulic push rod (20), and the output end of the hydraulic push rod (20) is slidably connected with the inner wall of the bottom plate (1), the output end of the hydraulic push rod (20) is fixedly connected with the lifting disc (21), and the lifting disc (21) is overlapped with the top surface of the bottom plate (1).

6. A clamping mechanism for a CNC machining center according to claim 1, characterized in that, The first clamping plate (8) is rectangular, and the first clamping plate (8) is made of metal material.

7. The clamping mechanism for a CNC machining center according to claim 4, characterized in that, The number of the driving wheels (16) is multiple, and the multiple driving wheels (16) are respectively located at the output ends on both sides of the second double-shaft motor (15).

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