阅读说明：本技术 一种带有精准送料机构的cnc加工中心 (CNC machining center with accurate feeding mechanism ) 是由 徐建华 于 2021-07-19 设计创作，主要内容包括：本发明涉及CNC加工中心技术领域,具体的说是一种带有精准送料机构的CNC加工中心,包括安装壳体、加工机构、传动机构、调节机构和主动按压机构,所述加工机构置于安装壳体内部上方,传动机构置于安装壳体中部两侧,安装壳体中部固定连接有滑动板,滑动板上表面滑动连接有支撑板,主动按压机构置于支撑板上表面前端,调节机构置于支撑板两侧,支撑板后端固定连接有定位板,该加工中心能够实现精准定位,减小定位误差,使得加工精度得到提高,同时该加工中心能够实现自动适应力夹紧,能够避免金属板因夹的过紧出现变形,同时也避免了因夹的过松出现脱落现象,保证了加工过程顺利,提高了加工中心的加工效率。(The invention relates to the technical field of CNC machining centers, in particular to a CNC machining center with an accurate feeding mechanism, which comprises an installation shell, a machining mechanism, a transmission mechanism, an adjusting mechanism and an active pressing mechanism, wherein the machining mechanism is arranged above the inside of the installation shell, the transmission mechanism is arranged on two sides of the middle part of the installation shell, a sliding plate is fixedly connected with the middle part of the installation shell, the upper surface of the sliding plate is slidably connected with a supporting plate, the active pressing mechanism is arranged at the front end of the upper surface of the supporting plate, the adjusting mechanism is arranged on two sides of the supporting plate, and the rear end of the supporting plate is fixedly connected with a positioning plate, the smooth machining process is ensured, and the machining efficiency of the machining center is improved.)

1. The utility model provides a CNC machining center with accurate feeding mechanism which characterized in that: the device comprises an installation shell (1), a processing mechanism (3), a transmission mechanism (4), an adjusting mechanism (5) and an active pressing mechanism (8), wherein the processing mechanism (3) is arranged at the upper part in the cavity of the installation shell (1), the transmission mechanism (4) is arranged at two sides of the middle part in the cavity of the installation shell (1), the middle part in the cavity of the installation shell (1) is connected with a sliding plate (2), one end of the sliding plate (2) is fixedly connected with the inner wall of the installation shell (1), the other end of the sliding plate (2) is arranged outside the installation shell (1), the upper surface of the sliding plate (2) is slidably connected with a support plate (7), the active pressing mechanism (8) is arranged at the front end of the upper surface of the support plate (7), the adjusting mechanism (5) is arranged at two sides of the support plate (7), the rear end of the support plate (7) is fixedly connected with a positioning plate (73), the upper surface of the support plate (7) is provided with a push groove (71), a push threaded rod (6) is arranged in the push groove (71), the one end fixedly connected with locking plate (61) that promotion threaded rod (6) are close to backup pad (7) middle part promotes groove (71) and keeps away from the fixed supporting shoe (72) that is equipped with in one end in backup pad (7) middle part, promotes threaded rod (6) and runs through supporting shoe (72), and promotes threaded rod (6) and supporting shoe (72) threaded connection.

2. The CNC machining center with accurate feeding mechanism according to claim 1, characterized in that: the adjusting mechanism (5) comprises an outer toothed ring (51), a abutting rod (52), a friction plate (53) and a threaded ring (54), the outer toothed ring (51) and the threaded ring (54) are rotatably connected to one side, away from the pushing groove (71), of the supporting block (72), the inner wall of the outer toothed ring (51) is fixedly connected with one end of the abutting rod (52), the friction plate (53) is fixedly connected with the telescopic end of the abutting rod (52), and the friction plate (53) and the threaded ring (54) are abutted and arranged.

3. The CNC machining center with accurate feeding mechanism according to claim 2, characterized in that: drive mechanism (4) are including drive threaded rod (41), conveyer belt (42) and first motor (43), first motor (43) fixed connection is at installation casing (1) front end outer wall, the front end of drive threaded rod (41) runs through installation casing (1) front end outer wall, and drive threaded rod (41) rotate with installation casing (1) and be connected, drive threaded rod (41) front end and first motor (43) output fixed connection, drive threaded rod (41) quantity is two, two drive threaded rod (41) symmetry sets up, and two drive threaded rod (41) keep away from first motor (43) one side and pass through conveyer belt (42) and connect.

4. The CNC machining center with precision feeding mechanism of claim 3, characterized in that: drive mechanism (4) still include driving plate (44) and concave connecting plate (45), and driving plate (44) cover is established at drive threaded rod (41) outer wall, and driving plate (44) and drive threaded rod (41) threaded connection, and driving plate (44) are close to installation casing (1) one end and installation casing (1) lateral wall sliding connection, and driving plate (44) are close to backup pad (7) one side fixed concave connecting plate (45), concave connecting plate (45) and backup pad (7) fixed connection.

5. The CNC machining center with precision feeding mechanism of claim 4, wherein: and transmission racks (21) are fixedly arranged on two sides of the sliding plate (2), the transmission racks (21) are arranged on two sides of the supporting plate (7), and the transmission racks (21) are meshed with the outer gear ring (51).

6. The CNC machining center with precision feeding mechanism of claim 5, characterized in that: the upper surface of the supporting plate (7) is further provided with a rack groove (74), the bottom of the front end of the locking plate (61) is fixedly connected with a locking rack (62), the locking rack (62) is arranged in the rack groove (74), and the locking rack (62) is connected with the rack groove (74) in a sliding mode.

7. The CNC machining center with precision feeding mechanism of claim 6, wherein: initiative pressing means (8) are including pivot (81), rotor plate (82) and press gear (83), and rotor plate (82) fixed cover is established in pivot (81) outer wall, and rack groove (74) lateral wall is equipped with the cavity, and pivot (81) lower extreme runs through the cavity top, and pivot (81) rotate with the cavity top and be connected, and pivot (81) lower extreme fixedly connected with presses gear (83).

8. The CNC machining center with accurate feeding mechanism according to claim 7, characterized in that: the active pressing mechanism (8) further comprises a phase change gear (84), the phase change gear (84) is rotatably connected to the bottom of the rack groove (74), and the phase change gear (84) is meshed with the locking rack (62) and the pressing gear (83) simultaneously.

9. The CNC machining center with accurate feeding mechanism according to claim 8, characterized in that: the active pressing mechanism (8) further comprises a hydraulic rod (85) and a pressing plate (86), one end of the hydraulic rod (85) is fixedly connected with the rotating plate (82), and the telescopic end of the hydraulic rod (85) is fixedly connected with the pressing plate (86).

Technical Field

The invention relates to the technical field of CNC machining centers, in particular to a CNC machining center with an accurate feeding mechanism.

Background

A CNC machining center is a programmed automated machine tool that can logically process a program having control codes or other symbolic instructions, decode it by a computer, thereby causing the machine tool to perform well-defined actions, and machine a blank to a semi-finished product zero by cutting with a tool.

When square metal sheet adds man-hour, need carry out manual location to the metal sheet and press from both sides the processing again after pressing from both sides tightly usually, the location presss from both sides the in-process, positioning error appears easily, influence the machining precision of part, too big then can make the metal sheet appear deformation phenomenon simultaneously, the metal sheet obscission can appear in the course of working to the clamp force undersize, cause processing cutter and processing metal sheet to damage, seriously influence machining center's normal use, cause machining center's machining efficiency to reduce low simultaneously.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a CNC machining center with an accurate feeding mechanism, which can realize accurate positioning, reduce positioning errors and improve machining precision, and meanwhile, the machining center can realize automatic adaptive force clamping, can avoid deformation of a metal plate due to over-tightening of a clamp, and can also avoid falling off due to over-loosening of the clamp, thereby ensuring smooth machining process and improving machining efficiency of the machining center.

The technical scheme adopted by the invention for solving the technical problems is as follows: a CNC machining center with an accurate feeding mechanism comprises an installation shell, a machining mechanism, a transmission mechanism, an adjusting mechanism and an active pressing mechanism, wherein the machining mechanism is arranged at the upper part in the cavity of the installation shell, the transmission mechanism is arranged at the two sides of the middle part in the cavity of the installation shell, the middle part in the cavity of the installation shell is connected with a sliding plate, one end of the sliding plate is fixedly connected with the inner wall of the installation shell, the other end of the sliding plate is arranged outside the installation shell, the upper surface of the sliding plate is slidably connected with a support plate, the active pressing mechanism is arranged at the front end of the upper surface of the support plate, the adjusting mechanism is arranged at the two sides of the support plate, the rear end of the support plate is fixedly connected with a positioning plate, the upper surface of the support plate is provided with a pushing groove, a pushing threaded rod is arranged in the pushing groove, one end, close to the middle part of the support plate, of the pushing threaded rod is fixedly connected with a locking plate, one end, far away from the middle part of the supporting plate, is fixedly provided with a supporting block, and penetrates through the pushing threaded rod, and the pushing threaded rod is in threaded connection with the supporting block.

Specifically, adjustment mechanism includes outer ring gear, support tight pole, friction disc and screw ring, and outer ring gear and screw ring rotate to be connected and keep away from promotion groove one side at the supporting shoe, and outer ring gear inner wall fixedly connected with supports the one end of tight pole, supports the flexible end fixed connection friction disc of tight pole, and the friction disc supports tightly the setting with the screw ring.

Specifically, drive mechanism includes drive threaded rod, conveyer belt and first motor, and first motor fixed connection is at installation casing front end outer wall, and drive threaded rod's front end runs through installation casing front end outer wall, and drive threaded rod rotates with the installation casing to be connected, drive threaded rod front end and first motor output fixed connection, and drive threaded rod quantity is two, and two drive threaded rod symmetries set up, and two drive threaded rod keep away from first motor one side and pass through the conveyer belt and connect.

Specifically, drive mechanism still includes driving plate and spill connecting plate, and the driving plate cover is established at drive threaded rod outer wall, and driving plate and drive threaded rod threaded connection, and the driving plate is close to installation casing one end and installation casing lateral wall sliding connection, and the driving plate is close to the fixed spill connecting plate in backup pad one side, spill connecting plate and backup pad fixed connection.

Specifically, the two sides of the sliding plate are fixedly provided with transmission racks, the transmission racks are arranged on the two sides of the supporting plate, and the transmission racks are meshed with the outer gear ring.

Specifically, the backup pad upper surface still is equipped with the rack groove, and locking plate front end bottom fixedly connected with locking rack, locking rack arrange the rack inslot in, and locking rack and rack groove sliding connection.

Specifically, initiative pressing means includes pivot, rotor plate and presses the gear, and the rotor plate fixed cover is established at the pivot outer wall, and rack groove lateral wall is equipped with the cavity, and the pivot lower extreme runs through the cavity top, and the pivot rotates with the cavity top to be connected, and pivot lower extreme fixedly connected with presses the gear.

Specifically, the initiative pressing mechanism further comprises a phase change gear, the phase change gear is rotatably connected to the bottom of the rack groove, and the phase change gear is meshed with the locking rack and the pressing gear simultaneously.

Concretely, initiative pressing means still includes the hydraulic stem and presses the clamp plate, hydraulic stem one end and rotor plate fixed connection, the flexible end fixedly connected with of hydraulic stem presses the clamp plate.

The invention has the beneficial effects that:

(1) the CNC machining center with the accurate feeding mechanism drives the outer toothed rings at two ends to synchronously move in the moving process of the supporting plate, when the outer toothed rings are meshed with the transmission rack, the outer toothed rings start to rotate and simultaneously drive the abutting rod and the friction plate to synchronously rotate, the friction plate drives the threaded rings to synchronously rotate, the pushing threaded rod moves towards the middle part of the supporting plate along the pushing groove direction in the rotating process of the threaded rings, the pushing threaded rod pushes the locking plates to synchronously move, the two locking plates synchronously move towards the direction close to the supporting plate to clamp the metal plate, when the clamping is proper, the friction plate and the threaded rings slide relatively, the pushing threaded rod does not continuously slide towards the direction close to the supporting plate, the automatic adaptive force clamping is realized, the metal plate can be prevented from deforming due to over-tightening of the clamp, and meanwhile, the phenomenon of falling off due to over-loosening of the clamp is also avoided, the smooth machining process is ensured, and the machining efficiency of the machining center is improved.

(2) In the CNC machining center with the accurate feeding mechanism, the front end of the locking plate drives the locking rack to synchronously move in the process that the locking plate moves towards the middle part of the supporting plate, the locking rack slides towards the middle part of the supporting plate along the direction of the rack groove and simultaneously drives the phase-change gear to clockwise rotate, the phase-change gear transmits power to the pressing gear, so that the pressing gear anticlockwise rotates, the pressing gear drives the rotating shaft to synchronously rotate in the rotating process, the rotating shaft drives the rotating plate to anticlockwise rotate, one end of the rotating plate, far away from the rotating shaft, drives the hydraulic rod to synchronously move, meanwhile, the hydraulic rod pushes the hydraulic plate to extrude the metal plate, so that the metal plate is completely contacted with the positioning plate, and simultaneously, the metal plate is further clamped, accurate positioning is realized, positioning errors are reduced, the machining precision is improved, and meanwhile, the machining center can realize automatic adaptive force clamping, the metal plate can be prevented from deforming due to over-tightness of the clamp, and meanwhile, the phenomenon of falling off due to over-looseness of the clamp is avoided, so that the smooth machining process is ensured, and the machining efficiency of a machining center is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a sectional perspective view of a CNC machining center with a precise feeding mechanism provided by the present invention.

FIG. 2 is a side wall sectional view of a CNC machining center with a precision feeding mechanism provided by the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 1 according to the present invention.

Fig. 4 is an enlarged view of the invention at B in fig. 1.

Fig. 5 is a connection diagram of the pressing gear and the rotating shaft provided by the invention.

Fig. 6 is a perspective view of an adjustment mechanism provided by the present invention.

In the figure: 1. installing a shell; 2. a sliding plate; 21. a drive rack; 3. a processing mechanism; 4. a transmission mechanism; 41. a transmission threaded rod; 42. a conveyor belt; 43. a first motor; 44. a drive plate; 45. a concave connecting plate; 5. an adjustment mechanism; 51. an outer ring gear; 52. a tightening rod; 53. a friction plate; 54. a threaded ring; 6. pushing the threaded rod; 61. a locking plate; 62. locking the rack; 7. a support plate; 71. a push groove; 72. a support block; 73. positioning a plate; 74. a rack slot; 8. an active pressing mechanism; 81. a rotating shaft; 82. a rotating plate; 83. a pressing gear; 84. a phase change gear; 85. a hydraulic lever; 86. and pressing the plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, a CNC machining center with a precise feeding mechanism comprises an installation shell 1, a machining mechanism 3, a transmission mechanism 4, an adjusting mechanism 5 and an active pressing mechanism 8, wherein the machining mechanism 3 is arranged at the upper part in the cavity of the installation shell 1, the transmission mechanism 4 is arranged at two sides of the middle part in the cavity of the installation shell 1, the middle part in the cavity of the installation shell 1 is connected with a sliding plate 2, one end of the sliding plate 2 is fixedly connected with the inner wall of the installation shell 1, the other end of the sliding plate 2 is arranged outside the installation shell 1, the upper surface of the sliding plate 2 is slidably connected with a support plate 7, the active pressing mechanism 8 is arranged at the front end of the upper surface of the support plate 7, the adjusting mechanism 5 is arranged at two sides of the support plate 7, the rear end of the support plate 7 is fixedly connected with a positioning plate 73, the upper surface of the support plate 7 is provided with a pushing groove 71, a pushing threaded rod 6 is arranged in the pushing groove 71, one end of the pushing threaded rod 6, which is close to the middle part of the support plate 7, is fixedly connected with a locking plate 61, the supporting block 72 is fixedly arranged at one end of the pushing groove 71, which is far away from the middle part of the supporting plate 7, the pushing threaded rod 6 penetrates through the supporting block 72, the threaded connection between the pushing threaded rod 6 and the supporting block 72 is realized, the processing of the metal plate is realized by arranging the processing mechanism 3, the adjustment of the supporting plate 7 is realized by arranging the transmission mechanism 4, meanwhile, power is provided for the adjusting mechanism 5 and the pressing mechanism 8, the control of clamping force is realized in the clamping process of the metal plate by arranging the adjusting mechanism 5, the metal plate can be prevented from deforming due to over-tightening of the clamp, meanwhile, the phenomenon of falling off due to over-loosening of the clamp is also avoided, the smooth processing process is ensured, the processing efficiency of a processing center is improved, accurate positioning can be realized by arranging the active pressing mechanism 8, the positioning error is reduced, the processing precision is improved, the pushing threaded rod 6 slides along the pushing groove 71, the movement track of the pushing groove 71 is limited, make the transmission in-process more stable, drive threaded rod 6 simultaneous movement simultaneously, realize controlling locking plate 61 through promoting threaded rod 6 and remove, realize pressing from both sides tightly the metal sheet through locking plate 61, through setting up supporting shoe 72, control promotes threaded rod 6 and rotates in-process lateral shifting to promote locking plate 61 simultaneous movement.

Specifically, the adjusting mechanism 5 includes an outer toothed ring 51, a tightening rod 52, a friction plate 53 and a threaded ring 54, the outer toothed ring 51 and the threaded ring 54 are rotatably connected to one side of a supporting block 72 away from a pushing groove 71, one end of the tightening rod 52 is fixedly connected to the inner wall of the outer toothed ring 51, the friction plate 53 is fixedly connected to the telescopic end of the tightening rod 52, the friction plate 53 and the threaded ring 54 are tightly connected, the outer toothed ring 51 simultaneously drives the tightening rod 52 and the friction plate 53 to synchronously rotate in the rotating process, the friction plate 53 drives the threaded ring 54 to synchronously rotate, the threaded ring 54 enables the pushing threaded rod 6 to move towards the middle of the supporting plate 7 along the direction of the pushing groove 71 in the rotating process, the pushing threaded rod 6 pushes the locking plates 61 to synchronously move, the two locking plates 61 synchronously move towards the direction close to the supporting plate 7 to clamp the metal plate, when the clamping is proper, the friction plate 53 and the threaded ring 54 relatively slide, the pushing threaded rod 6 does not slide towards the direction close to the supporting plate 7, automatic adaptive force clamping is achieved, deformation of the metal plate due to over-tightening of the clamp can be avoided, meanwhile, the phenomenon of falling due to over-loosening of the clamp is also avoided, the machining process is guaranteed to be smooth, and machining efficiency of a machining center is improved.

Specifically, drive mechanism 4 includes drive threaded rod 41, conveyer belt 42 and first motor 43, first motor 43 fixed connection is at 1 front end outer wall of installation casing, the front end of drive threaded rod 41 runs through the 1 front end outer wall of installation casing, and drive threaded rod 41 rotates with installation casing 1 and is connected, drive threaded rod 41 front end and first motor 43 output fixed connection, drive threaded rod 41 quantity is two, two drive threaded rod 41 symmetries set up, and two drive threaded rod 41 keep away from first motor 43 one side and pass through conveyer belt 42 and connect, open first motor 43, drive threaded rod 41 through first motor 43 and rotate, drive threaded rod 41 rotates the in-process simultaneously and drives another drive threaded rod 41 synchronous rotation through conveyer belt 42, make two drive threaded rod 41 synchronous rotation.

Specifically, drive mechanism 4 still includes driving plate 44 and concave connecting plate 45, driving plate 44 cover is established at 41 outer walls of drive threaded rod, and driving plate 44 and 41 threaded connection of drive threaded rod, driving plate 44 is close to 1 one end of installation casing and 1 lateral wall sliding connection of installation casing, driving plate 44 is close to the fixed concave connecting plate 45 in backup pad 7 one side, concave connecting plate 45 and backup pad 7 fixed connection, drive threaded rod 41 rotates in-process and drives driving plate 44 and slide to 1 inboard along drive threaded rod 41 to installation casing, drive concave connecting plate 45 simultaneous movement simultaneously, concave connecting plate 45 drives backup pad 7 along 2 surface slides of sliding plate and enter into installation casing 1 simultaneously.

Specifically, the two sides of the sliding plate 2 are fixedly provided with the transmission racks 21, the transmission racks 21 are arranged on the two sides of the supporting plate 7, the transmission racks 21 are meshed with the outer toothed rings 51, the outer toothed rings 51 at the two ends are driven to synchronously move in the moving process of the supporting plate 7, the outer toothed rings 51 are meshed with the transmission racks 21, and the transmission racks 21 drive the outer toothed rings 51 to rotate.

Specifically, the upper surface of the supporting plate 7 is further provided with a rack groove 74, the locking rack 62 is fixedly connected to the bottom of the front end of the locking plate 61, the locking rack 62 is arranged in the rack groove 74, the locking rack 62 is slidably connected with the rack groove 74, when the locking plate 61 slides, the locking rack 62 which is arranged at the bottom of the front end is driven to slide along the rack groove 74, and the rack groove 74 is arranged, so that the movement track of the locking rack 62 is determined, and the stability of power transmission is improved.

Specifically, initiative pressing means 8 includes pivot 81, rotor plate 82 and presses down gear 83, and the fixed cover of rotor plate 82 is established at pivot 81 outer wall, and rack groove 74 lateral wall is equipped with the cavity, and the cavity top is run through to pivot 81 lower extreme, and pivot 81 rotates with the cavity top to be connected, and pivot 81 lower extreme fixedly connected with presses down gear 83, presses down gear 83 and arranges the cavity in, presses down gear 83 anticlockwise rotation in-process and drives pivot 81 synchronous rotation, and pivot 81 drives rotor plate 82 synchronous anticlockwise rotation at the rotation in-process.

Specifically, the active pressing mechanism 8 further comprises a phase change gear 84, the phase change gear 84 is rotatably connected to the bottom of the rack groove 74, the phase change gear 84 is simultaneously meshed with the locking rack 62 and the pressing gear 83, the phase change gear 84 is driven to rotate clockwise by sliding of the locking rack 62, power is transmitted to the pressing gear 83 through the phase change gear 84, the pressing gear 83 rotates anticlockwise, and the functions of power transmission and transmission direction change are achieved by arranging the phase change gear 8.

Specifically, the active pressing mechanism 8 further includes a hydraulic rod 85 and a pressing plate 86, one end of the hydraulic rod 85 is fixedly connected to the rotating plate 82, the telescopic end of the hydraulic rod 85 is fixedly connected to the pressing plate 86, the pressing gear 83 drives the rotating shaft 81 to rotate synchronously during rotation, the rotating shaft 81 drives the rotating plate 82 to rotate counterclockwise, one end of the rotating plate 82 away from the rotating shaft 81 drives the hydraulic rod 85 to move synchronously, meanwhile, the hydraulic rod 85 pushes the hydraulic plate 86 to extrude the metal plate, so that the metal plate is completely contacted with the positioning plate 73, meanwhile, the metal plate is further clamped, the accurate positioning is realized, the positioning error is reduced, the processing precision is improved, meanwhile, the machining center can realize automatic adaptive force clamping, can avoid the deformation of the metal plate due to over-tightening of the clamp, meanwhile, the phenomenon of falling off caused by over-loosening of the clamp is avoided, the smooth machining process is ensured, and the machining efficiency of the machining center is improved.

When the device is used, a square metal plate is placed on the upper surface of the supporting plate 7, one side of the metal plate is in contact with the positioning plate 74, the first motor 43 is started, the first motor 43 drives the transmission threaded rod 41 to rotate, meanwhile, the other transmission threaded rod 41 is driven to synchronously rotate through the conveyor belt 42, the transmission threaded rod 41 drives the transmission plate 44 to slide towards the inner side of the mounting shell 1 along the transmission threaded rod 41 in the rotating process, the concave connecting plate 45 is driven to synchronously move, the concave connecting plate 45 drives the supporting plate 7 to slide into the mounting shell 1 along the surface of the sliding plate 2, the outer toothed rings 51 at two ends are driven to synchronously move in the moving process of the supporting plate 7, when the outer toothed rings 51 are meshed with the transmission rack 21, the outer toothed rings 51 start to rotate, simultaneously drive the abutting rod 52 and the friction plate 53 to synchronously rotate, the friction plate 53 drives the threaded ring 54 to synchronously rotate, the threaded ring 54 enables the pushing threaded rod 6 to move towards the middle of the supporting plate 7 along the pushing groove 71 in the rotating process, the pushing threaded rod 6 pushes the locking plates 61 to move synchronously, the two locking plates 61 move synchronously towards the direction close to the supporting plate 7 to clamp the metal plate, when the metal plate is properly clamped, the friction plate 53 and the threaded ring 54 slide relatively, the pushing threaded rod 6 does not slide continuously towards the direction close to the supporting plate 7, automatic adaptive force clamping is realized, deformation of the metal plate due to over-tightening of the clamp can be avoided, and meanwhile, the phenomenon of falling off due to over-loosening of the clamp is also avoided, smooth processing is ensured, the processing efficiency of a processing center is improved, in the process that the locking plates 61 move towards the middle part close to the supporting plate 7, the front ends of the locking plates 61 drive the locking racks 62 to move synchronously, the locking racks 62 slide towards the middle part of the supporting plate 7 along the direction of the rack grooves 74, meanwhile, the phase-changing gear 84 is driven to rotate clockwise, the phase-changing gear 84 transmits power to the pressing gear 83, so that the pressing gear 83 rotates anticlockwise, pressing gear 83 drives pivot 81 synchronous rotation at the rotation in-process, pivot 81 drives rotor plate 82 anticlockwise rotation, rotor plate 82 keeps away from pivot 81 one end and drives hydraulic stem 85 synchronous motion, promote hydraulic version 86 extrusion metal sheet through hydraulic stem 85 simultaneously, make metal sheet and locating plate 73 contact completely, simultaneously further press from both sides tightly the metal sheet, realize accurate location, reduce positioning error, make the machining precision obtain improving, this machining center can realize that automatic adaptive force presss from both sides tightly simultaneously, can avoid the metal sheet to appear warping because of pressing from both sides the tension, the phenomenon of coming off has also been avoided appearing because of pressing from both sides too loose simultaneously, guaranteed that the course of working is smooth, machining center's machining efficiency has been improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.