CN109693128B

CN109693128B - Numerical control machine tool machining clamp with protection structure

Info

Publication number: CN109693128B
Application number: CN201910147928.5A
Authority: CN
Inventors: 段广游
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2021-04-06
Anticipated expiration: 2039-02-28
Also published as: CN109693128A

Abstract

The invention relates to a clamp with a protective structure for machining a numerical control machine tool, which comprises a positioning foot seat and an adapter, wherein the adapter is arranged at the upper end of the positioning foot seat, the left end and the right end of the adapter are both connected with external connectors, a positioning clamp is arranged on the outer side of the upper end of the adapter, and an auxiliary clamp is arranged at the left end of the top of the positioning clamp. The invention has the beneficial effects that: this digit control machine tool processing has protective structure's anchor clamps, be provided with interior post groove and location outer post groove, through rotatory set screw, can make the spiral shell head of set screw see through linking up the location inner prop and laminating mutually with the inner wall in location outer post groove, and then play the location effect, can pass through the location outer post groove simultaneously and link up the slip of location between the inner prop, can slide adjusting links up the high position of location inner prop, and then make linking up the location inner prop protruding, let the device body can carry out the centre gripping operation to small size article or round hole form article, enrich the performance of its centre gripping.

Description

Numerical control machine tool machining clamp with protection structure

Technical Field

The invention relates to the technical field of clamps, in particular to a clamp with a protective structure for machining of a numerical control machine tool.

Background

The jig is a device for fixing a processing object to a correct position for receiving construction or inspection in a machine manufacturing process, and is also called a jig (qi a/j ǜ). In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage of a process may be referred to as a jig, and jigs are also commonly used in cnc machining to perform auxiliary machining operations.

The existing clamp has certain loopholes due to the structural design, if the clamp cannot be stably and flexibly adjusted, the clamp is further used to have certain potential safety hazards, and the problem of insufficient practicality exists.

Disclosure of Invention

The invention aims to provide a clamp with a protective structure for numerical control machine tool machining, which solves the problems that the existing clamp proposed in the background art has certain leaks due to the structural design, if the clamp cannot be stably and flexibly adjusted, the clamp has certain potential safety hazards in use and is not practical enough, and meanwhile, the clamp has the problem of not stable enough when clamping articles due to the fact that the safety protection measures of the clamp in use are not in place.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a digit control machine tool processing has protective structure's anchor clamps, includes location foot rest and adapter, the adapter is settled in the upper end of location foot rest, and the both ends all link up the external joint about the adapter, the location clamp is installed in the upper end outside of adapter, the left end at location clamp top portion settles and has supplementary binding clasp.

Preferably, the location foot stool includes movable positioning seat, links up the screens seat, links up perforation, spread groove, positioning lead screw, positioning screw thread seat and positioning head, movable positioning seat is installed in the bottom outside of location foot stool, and the bottom inboard of location foot stool is fixed with links up the screens seat, the inside of linking screens seat bottom is worn to be equipped with and is linked up the perforation, and links up the inside spread groove of having seted up in screens seat top, the inboard of spread groove links up the positioning lead screw, and settles in the right-hand member outside of positioning lead screw to have the positioning screw thread seat, the top outer wall of positioning lead screw is fixed with the positioning head.

Preferably, be swing joint between activity positioning seat and the linking screens seat, and link up the screens seat and be "P" font structure, be threaded connection between screw rod and the screw thread seat of adjusting a position moreover.

Preferably, the adapter includes the outer joint, links up sliding tray, interior slide, links up spout mouth and central crossbeam, the linking sliding tray has all been seted up at both ends around the outer joint, and the one end that is close to the adapter middle part of outer joint is fixed with interior slide, link up the spout mouth has been seted up in the outside of interior slide, and the outside of linking the spout mouth settles and have central crossbeam.

Preferably, the sum of the lengths of the outer joint and the central beam is the same as the length of the connecting sliding groove, the inner sliding seat is movably connected with the connecting sliding groove opening, and the inner sliding seat and the connecting sliding groove opening are symmetrical about the center of the central beam.

Preferably, the positioning clamp comprises a rotary adjusting screw, an upper seat, a linking spring column, a lower seat, a sliding penetrating rod, a central positioning base and a linking rotating wheel, the rotary adjusting screw is arranged at the top end of the middle part of the positioning clamp, the upper seat is arranged on the outer side of the upper end of the rotary adjusting screw, the linking spring column is fixed at the bottom ends of the left side and the right side of the upper seat, the lower seat is arranged on the outer side of the lower end of the rotary adjusting screw, the sliding penetrating rod is connected to the lower sides of the left end and the right end of the lower seat, the central positioning base is arranged at the bottom end of the positioning clamp, and the linking rotating wheel is arranged on the inner sides of the front end and.

Preferably, the upper seat is movably connected with the screw for rotary adjustment, the screw for rotary adjustment is in threaded connection with the lower seat, and the upper seat is fixedly connected with the linking spring column.

Preferably, the lower seat forms a sliding structure with the central positioning base through a sliding penetrating rod, the sliding penetrating rod is symmetrical about the center of the central positioning base, the central positioning base forms a sliding structure with the outer joint through a linking rotating wheel and a linking sliding groove, the linking rotating wheels are arranged in two groups, and each group is provided with six.

Preferably, supplementary binding clasp includes set screw, links up the interior post of location, fixes a position in spring post, interior post groove and the outer post groove of location, and the left end of supplementary binding clasp has linked up the set screw, the inboard of set screw is fixed with links up the location interior post, and links up the middle part of fixing a position in the post and has linked up the location in the spring post, the interior post groove has been seted up in the outside of spring post in the location, the outside of linking up the location interior post is provided with the outer post groove of location.

Preferably, be threaded connection between set screw and the linking location inner prop, and link up the location inner prop and constitute elastic construction through spring post in the location with the lower carriage, be swing joint between outer post groove of location and the linking location inner prop moreover.

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

1. according to the invention, through the arrangement of the movable positioning seat, the connection clamping seat, the connection perforation, the connecting groove, the positioning screw rod, the positioning threaded seat and the positioning head, the position of the positioning threaded seat in the connecting groove can be adjusted through the positioning screw rod by rotating the positioning head, so that the position of the movable positioning seat can be adjusted, the connection clamping seat and the movable positioning seat can be attached or separated, the clamping operation is convenient, and the positioning operation is further carried out on the whole device body.

2. The invention can conveniently connect the connecting rotating wheel through the connecting sliding groove by arranging the outer joint, the connecting sliding groove, the inner sliding seat, the connecting sliding groove port and the central beam, meanwhile, the connecting rotating wheel can slide out conveniently through one end of the outer joint so as to facilitate the installation and disassembly operation of the positioning clamp, improve the flexibility of the device body in use, and simultaneously through the sliding between the inner sliding seat and the connecting sliding groove opening, the position of the inner sliding seat can be adjusted in a sliding way, so that the effect of adjusting the use position of the outer joint is achieved, the position of the positioning clamp can be adjusted when the positioning clamp is adjusted to the outer side of the outer joint in a sliding way, the adjusting performance of the positioning clamp when in use is greatly improved, meanwhile, the positioning clamp and the central beam after adjustment can be positioned through the rotation of the locking screws penetrating through the outer ends of the positioning clamp and the outer ends of the left end and the right end of the central beam.

3. According to the clamping device, the upper seat and the lower seat can be attached by rotating the rotary adjusting screw through the arrangement of the rotary adjusting screw, the upper seat and the connecting spring column, so that clamping operation is performed, and meanwhile, the upper seat and the lower seat can be attached more flexibly and stably through the connecting use of the connecting spring column, so that the effect of protecting clamped objects is achieved, and the clamped objects are prevented from being damaged by overexcited vibration and impact.

4. According to the invention, through the arrangement of the sliding through connecting rod, the central positioning base and the connecting rotating wheel, through the movement between the sliding through connecting rod and the central positioning base, the sliding adjustment can be carried out between the central positioning base and the lower base, so that the lower base can be subjected to the height lifting adjustment along with the sliding adjustment, and the position adjustment of the central positioning base can be carried out according to the connection of the connecting rotating wheel and the connecting sliding groove.

5. According to the invention, through the arrangement of the positioning screw, the linking positioning inner column, the positioning inner spring column, the inner column groove and the positioning outer column groove, the screw head of the positioning screw can be attached to the inner wall of the positioning outer column groove through the linking positioning inner column by rotating the positioning screw, so that the positioning effect is achieved, meanwhile, the height position of the linking positioning inner column can be adjusted in a sliding manner through the sliding between the positioning outer column groove and the linking positioning inner column, so that the linking positioning inner column is protruded, and the device body can clamp small-area articles or round-hole-shaped articles, thereby enriching the clamping performance.

Drawings

FIG. 1 is a schematic structural diagram of a numerically controlled machine tool machining fixture with a protective structure according to the present invention;

FIG. 2 is an enlarged schematic view of a part A of FIG. 1 illustrating a tool holder with a protective structure for CNC machine tool machining according to the present invention;

FIG. 3 is a schematic diagram of the internal structure of a connecting groove and an engaging sliding groove of a clamp with a protective structure for numerically-controlled machine tool machining according to the present invention;

FIG. 4 is a side view of the upper and lower seats of the clamp with protective structure for CNC machine tool machining according to the present invention;

fig. 5 is an enlarged structural schematic diagram of a part B in fig. 4 of the clamp with the protective structure for the cnc machine tool processing according to the present invention.

In the figure: 1. a positioning foot seat; 2. a movable positioning seat; 3. connecting the clamping seat; 4. connecting and perforating; 5. connecting grooves; 6. adjusting a position screw rod; 7. adjusting the threaded seat; 8. a positioning head; 9. an adapter; 10. an outer joint; 11. connecting the sliding grooves; 12. an inner slide; 13. a connecting sliding groove opening; 14. a central beam; 15. positioning the clamp; 16. screwing and adjusting screws; 17. an upper seat; 18. connecting the spring columns; 19. a lower seat; 20. a sliding through connection rod; 21. a central positioning base; 22. connecting the rotating wheels; 23. an auxiliary clamper; 24. a set screw; 25. connecting and positioning the inner column; 26. positioning the inner spring post; 27. an inner column groove; 28. and positioning the outer column groove.

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.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the present invention provides a technical solution: a clamp with a protective structure for numerical control machine tool processing comprises a positioning foot seat 1, a movable positioning seat 2, a linking clamping seat 3, a linking perforation 4, a connecting groove 5, a position adjusting screw rod 6, a position adjusting screw seat 7, a position adjusting head 8, a linker 9, an external joint 10, a linking sliding groove 11, an internal sliding seat 12, a linking sliding groove opening 13, a central beam 14, a positioning clamp 15, a rotary adjusting screw 16, an upper seat 17, a linking spring column 18, a lower seat 19, a sliding through connecting rod 20, a central position adjusting base 21, a linking rotating wheel 22, an auxiliary clamp 23, a positioning screw 24, a linking positioning internal column 25, a positioning internal spring column 26, an internal column groove 27 and a positioning external column groove 28, wherein the linker 9 is arranged at the upper end of the positioning foot seat 1, the left end and the right end of the adapter 9 are both connected with an external joint 10, the outer side of the upper end of the adapter 9 is provided with a positioning clamp 15, and the left end of the top of the positioning clamp 15 is provided with an auxiliary clamp 23;

the positioning foot seat 1 comprises a movable positioning seat 2, a linking clamping seat 3, a linking perforation 4, a connecting groove 5, a positioning screw rod 6, a positioning screw thread seat 7 and a positioning head 8, the movable positioning seat 2 is arranged at the outer side of the bottom end of the positioning foot seat 1, the linking clamping seat 3 is fixed at the inner side of the bottom end of the positioning foot seat 1, the linking perforation 4 is arranged in the linking clamping seat 3 in a penetrating way, the connecting groove 5 is arranged in the top end of the linking clamping seat 3, the positioning screw rod 6 is linked at the inner side of the connecting groove 5, the positioning screw thread seat 7 is arranged at the outer side of the right end of the positioning screw rod 6, the positioning head 8 is fixed at the outer wall of the top end of the positioning screw rod 6, the movable positioning seat 2 is movably connected with the linking clamping seat 3, the linking clamping seat 3 is in a P-shaped structure, the positioning screw rod 6 is in threaded connection with the positioning screw thread seat 7, and the position of the positioning screw thread seat 7 can be adjusted in the connecting groove 5 by rotating the positioning head 8, the position of the movable positioning seat 2 is adjusted, so that the connection clamping seat 3 and the movable positioning seat 2 are attached or separated, clamping operation is convenient, and the whole device body is positioned;

the adapter 9 comprises an outer joint 10, an engagement sliding groove 11, an inner sliding seat 12, an engagement sliding groove opening 13 and a central beam 14, the engagement sliding groove 11 is respectively arranged at the front end and the rear end of the outer joint 10, the inner sliding seat 12 is fixed at one end of the outer joint 10 close to the middle part of the adapter 9, the engagement sliding groove opening 13 is arranged at the outer side of the inner sliding seat 12, the central beam 14 is arranged at the outer side of the engagement sliding groove opening 13, the sum of the lengths of the outer joint 10 and the central beam 14 is the same as that of the engagement sliding groove 11, the inner sliding seat 12 is movably connected with the engagement sliding groove opening 13, the inner sliding seat 12 and the engagement sliding groove opening 13 are symmetrical about the center of the central beam 14, the engagement rotating wheel 22 can be conveniently engaged through the engagement sliding groove 11, the engagement rotating wheel 22 can conveniently slide out through one end of the outer joint 10, so as to conveniently carry out the installation and disassembly operation of the positioning clamp 15, and improve the, meanwhile, the position of the inner slide seat 12 can be adjusted in a sliding manner through the sliding between the inner slide seat 12 and the linking slide groove opening 13, so that the effect of adjusting the use position of the outer joint 10 is achieved, the positioning clamp 15 can be adjusted in position along with the outer side of the outer joint 10 in a sliding manner, the adjusting performance of the positioning clamp 15 in use is greatly improved, and meanwhile, the adjusted positioning clamp 15 and the adjusted central beam 14 can be positioned through the rotation of locking screws penetrating through the outer end of the positioning clamp 15 and the outer ends of the left end and the right end of the central beam 14;

the positioning clamp 15 comprises a screwing screw 16, an upper seat 17, a linking spring column 18, a lower seat 19, a sliding through connecting rod 20, a central positioning base 21 and a linking rotary wheel 22, the top end of the middle part of the positioning clamp 15 is provided with the screwing screw 16, the upper seat 17 is arranged on the outer side of the upper end of the screwing screw 16, the linking spring column 18 is fixed on the bottom ends of the left side and the right side of the upper seat 17, the lower seat 19 is arranged on the outer side of the lower end of the screwing screw 16, the sliding through connecting rod 20 is connected on the lower sides of the left end and the right end of the lower seat 19, the central positioning base 21 is arranged on the bottom end of the positioning clamp 15, the linking rotary wheel 22 is arranged on the inner sides of the front end and the rear end of the central positioning base 21, the upper seat 17 is movably connected with the screwing screw 16, the screwing screw 16 is in threaded connection with the lower seat 19, the upper seat 17 is fixedly connected with the linking spring column 18, the upper seat 17 can be attached to the, the clamping operation is further carried out, and meanwhile, the upper seat 17 and the lower seat 19 can be attached more softly and stably through the connection of the connection spring columns 18, so that the effect of protecting clamped objects is achieved, and the clamped objects are prevented from being damaged by overexcited vibration and impact;

the lower seat 19 and the central positioning base 21 form a sliding structure through a sliding penetrating rod 20, the sliding penetrating rod 20 is symmetrical about the center of the central positioning base 21, the central positioning base 21 and the outer joint 10 form a sliding structure through a linking rotating wheel 22 and a linking sliding groove 11, two groups of linking rotating wheels 22 are arranged, each group is provided with six, through the movement between the sliding penetrating rod 20 and the central positioning base 21, the sliding adjustment can be carried out between the central positioning base 21 and the lower seat 19, the lower seat 19 can be subjected to the height lifting adjustment along with the sliding adjustment, and the position adjustment of the central positioning base 21 can be carried out according to the linking of the linking rotating wheel 22 and the linking sliding groove 11;

the auxiliary clamp 23 comprises a positioning screw 24, a linking and positioning inner column 25, a positioning inner spring column 26, an inner column groove 27 and a positioning outer column groove 28, the left end of the auxiliary clamp 23 is connected with the positioning screw 24, the linking and positioning inner column 25 is fixed on the inner side of the positioning screw 24, the middle part of the linking and positioning inner column 25 is connected with the positioning inner spring column 26, the outer side of the positioning inner spring column 26 is provided with the inner column groove 27, the outer side of the linking and positioning inner column 25 is provided with the positioning outer column groove 28, the positioning screw 24 is in threaded connection with the linking and positioning inner column 25, the linking and positioning inner column 25 forms an elastic structure with the lower seat 19 through the positioning inner spring column 26, the positioning outer column groove 28 is movably connected with the linking and positioning inner column 25, the screw head of the positioning screw 24 can be attached to the inner wall of the positioning outer column groove 28 through the linking and positioning inner column 25 by rotating the positioning screw 24, and then play the location effect, can pass through the slip between outer post groove 28 of location and the interior post 25 of linking location simultaneously, can slide and adjust the high position that links up the location interior post 25, and then make linking location interior post 25 protruding, let the device body can carry out the centre gripping operation to small area article or round hole form article, enrich the performance of its centre gripping.

In conclusion, when the clamp with the protective structure is processed by the numerical control machine tool, when the clamp is used, the position of the position-adjusting threaded seat 7 in the connecting groove 5 can be adjusted through the position-adjusting screw rod 6 by rotating the position-adjusting head 8, so that the position of the movable positioning seat 2 can be adjusted, the connecting clamping seat 3 and the movable positioning seat 2 can be attached or separated, the clamping operation is convenient, the positioning operation is further carried out on the whole device body, the connecting rotating wheel 22 can be conveniently connected through the connecting sliding groove 11, the connecting rotating wheel 22 can be conveniently slid out through one end of the outer joint 10, the mounting and dismounting operation of the positioning clamp 15 is convenient, the flexibility of the device body in use is improved, the position of the inner sliding seat 12 can be slidably adjusted through the sliding between the inner sliding seat 12 and the connecting sliding groove opening 13, and the effect of adjusting the use position of the outer joint 10 is achieved, the position of the positioning clamp 15 can be adjusted when the positioning clamp 15 is adjusted to the outer side of the outer joint 10 in a sliding manner, the adjusting performance of the positioning clamp 15 in use is greatly improved, meanwhile, the adjusted positioning clamp 15 and the adjusted central beam 14 can be positioned through the rotation of locking screws penetrating through the outer end of the positioning clamp 15 and the outer ends of the left end and the right end of the central beam 14, the upper seat 17 and the lower seat 19 can be attached through rotating the rotary adjusting screws 16, the clamping operation is further performed, meanwhile, the upper seat 17 and the lower seat 19 can be attached more flexibly and stably through the connection of the connecting spring columns 18, the effect of protecting clamped objects is achieved, the clamped objects are prevented from being damaged by over-excited vibration and impact, the central adjusting base 21 and the lower seat 19 can be adjusted in a sliding manner through the movement between the sliding penetrating rod 20 and the central adjusting base 21, and then can let lower seat 19 can carry out the lift adjustment of height along with it, and according to linking up runner 22 and linking up the linking of sliding tray 11, can carry out the position control of central positioning base 21, through rotatory set screw 24, can make the spiral shell head of set screw 24 see through linking up the interior post 25 of location and laminating mutually with the inner wall of location outer post groove 28, and then play the location effect, simultaneously can be through fixing a position outer post groove 28 and linking up the slip between the location interior post 25, can slide and adjust the high position of linking up the location interior post 25, and then make linking up the location interior post 25 protruding, let the device body can carry out the centre gripping operation to small area article or round hole form article, enrich the performance of its centre gripping.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a digit control machine tool machining has protective structure's anchor clamps, includes location foot rest (1) and adapter (9), its characterized in that: the adapter (9) is arranged at the upper end of the positioning foot seat (1), the left end and the right end of the adapter (9) are both connected with an external connector (10), the outer side of the upper end of the adapter (9) is provided with a positioning clamp (15), the left end of the top of the positioning clamp (15) is provided with an auxiliary clamp (23), the positioning foot seat (1) comprises a movable positioning seat (2), a connecting clamping seat (3), a connecting perforation (4), a connecting groove (5), a positioning screw rod (6), a positioning threaded seat (7) and a positioning head (8), the outer side of the bottom end of the positioning foot seat (1) is provided with the movable positioning seat (2), the inner side of the bottom end of the positioning foot seat (1) is fixedly provided with the connecting clamping seat (3), the inner part of the bottom end of the connecting clamping seat (3) is provided with the connecting perforation (4), and the inner part of the top end of the connecting clamping seat (3) is provided with the connecting groove (5), the inner side of the connecting groove (5) is connected with a position adjusting screw rod (6), the outer side of the right end of the position adjusting screw rod (6) is provided with a position adjusting threaded seat (7), the outer wall of the top end of the position adjusting screw rod (6) is fixedly provided with a position adjusting head (8), the movable positioning seat (2) is movably connected with the connecting clamping seat (3), the connecting clamping seat (3) is of a P-shaped structure, the position adjusting screw rod (6) is in threaded connection with the position adjusting threaded seat (7), the adapter (9) comprises an outer adapter (10), a connecting sliding groove (11), an inner sliding seat (12), a connecting sliding groove opening (13) and a central cross beam (14), the front end and the rear end of the outer adapter (10) are both provided with the connecting sliding groove (11), one end of the outer adapter (10) close to the middle part of the adapter (9) is fixedly provided with the inner sliding seat (12), the outer side of the inner sliding groove opening (12) is provided with the sliding groove opening (13), a central beam (14) is arranged on the outer side of the connecting sliding groove opening (13), the sum of the lengths of the outer joint (10) and the central beam (14) is the same as the length of the connecting sliding groove (11), the inner sliding seat (12) and the connecting sliding groove opening (13) are movably connected, the inner sliding seat (12) and the connecting sliding groove opening (13) are symmetrical about the center of the central beam (14), the positioning clamp (15) comprises a screwing screw (16), an upper seat (17), a connecting spring column (18), a lower seat (19), a sliding through connecting rod (20), a center positioning base (21) and a connecting rotating wheel (22), the top end of the middle part of the positioning clamp (15) is provided with a screwing screw (16), the upper seat (17) is arranged on the outer side of the upper end of the screwing screw (16), the connecting spring columns (18) are fixed on the bottom ends of the left side and the right side of the upper seat (17), and the lower seat (19) is arranged on the outer side of the lower end of the screwing screw (, and the downside at both ends all links up and to link up pole (20) that slide about lower seat (19), the bottom of location holder (15) is settled there is central positioning base (21), and the inboard at both ends all installs linking runner (22) around central positioning base (21), be swing joint between upper seat (17) and the screw (16) of transferring soon, and transfer soon between screw (16) and lower seat (19) for threaded connection, be fixed connection between upper seat (17) and linking spring post (18) moreover.

2. The clamp with the protective structure for the numerical control machine tool machining according to claim 1, is characterized in that: lower seat (19) through slip wear to connect pole (20) and central positioning base (21) constitution sliding construction, and slip wear to connect pole (20) and be about the central symmetry of central positioning base (21), central positioning base (21) constitutes sliding construction through linking runner (22) and linking sliding tray (11) and outer joint (10) moreover to linking runner (22) is provided with two sets ofly, and its every group is provided with six.

3. The clamp with the protective structure for the numerical control machine tool machining according to claim 1, is characterized in that: supplementary binding clasp (23) include set screw (24), link up the location inner prop (25), the location inner spring post (26), inner prop groove (27) and location outer prop groove (28), and the left end of supplementary binding clasp (23) has linked up set screw (24), the inboard of set screw (24) is fixed with links up the location inner prop (25), and links up the middle part of location inner prop (25) and has linked up in the location spring post (26), inner prop groove (27) have been seted up in the outside of spring post (26) in the location, the outside of linking up location inner prop (25) is provided with location outer prop groove (28).

4. The clamp with the protective structure for the numerical control machine tool machining according to claim 3, is characterized in that: the positioning screw (24) is in threaded connection with the connecting positioning inner column (25), the connecting positioning inner column (25) forms an elastic structure with the lower seat (19) through the positioning inner spring column (26), and the positioning outer column groove (28) is movably connected with the connecting positioning inner column (25).