CN213827085U

CN213827085U - Clamp driving mechanism and chuck clamping device with same

Info

Publication number: CN213827085U
Application number: CN202022798940.3U
Authority: CN
Inventors: 朱彪; 郭铁山
Original assignee: Datong Zhongche Aibixi Foundry Co ltd
Current assignee: Datong Zhongche Aibixi Foundry Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-30
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a mechanical clamping technical field provides an anchor clamps actuating mechanism and have its chuck clamping device. The clamp driving mechanism comprises a chuck body, a semicircular pin, a pin shaft, a driving part, a switching assembly, a clamping connecting piece and a check ring, and the chuck body is used for being connected to the main shaft; the semicircular pin is arranged in the first mounting groove, a mounting hole is formed in the semicircular pin, and the bottom end of the semicircular pin is abutted to the main shaft; the pin shaft penetrates through the mounting hole; the driving rod is rotatably arranged on the pin shaft, and the power part is connected with the driving rod so as to drive the driving rod to rotate along the first direction or the second direction relative to the pin shaft; the driving rod is connected with the switching component so as to drive the switching component to move relative to the chuck body; the switching assembly is connected with the clamping connecting piece so as to drive the clamping connecting piece to drive the clamp to move; the retainer ring is arranged in the clamping groove, and protrudes out of the opening of the clamping groove to be abutted against the upper part of the semicircular pin.

Description

Clamp driving mechanism and chuck clamping device with same

Technical Field

The utility model relates to a mechanical clamping technical field especially relates to an anchor clamps actuating mechanism and have its chuck clamping device.

Background

The common hydraulic self-centering chuck comprises three synchronous racks, only can clamp a workpiece under stress when moving towards the center, namely, an outer clamp (moving from outside to center to clamp the workpiece), but cannot clamp the workpiece directly when moving away from the center, namely, the three synchronous racks cannot bear the stress, and the universality is poor. In the chuck, if the workpiece is clamped by an inner clamp, a set of lever reversing mechanism is added to the clamp, so that the links of the whole clamping system are increased, the repeated centering precision is poor, and the process requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anchor clamps actuating mechanism and have its chuck clamping device to improve anchor clamps actuating mechanism's commonality.

According to the utility model discloses a first aspect provides a anchor clamps actuating mechanism for it removes to drive anchor clamps, its characterized in that, anchor clamps actuating mechanism includes:

the chuck body is provided with a first mounting groove and a clamping groove and is used for being connected to the spindle;

the semicircular pin is arranged in the first mounting groove, a mounting hole is formed in the semicircular pin, and the bottom end of the semicircular pin is abutted to the main shaft;

the pin shaft is arranged in the mounting hole in a penetrating way;

the driving part comprises a power part and a driving rod, the driving rod is rotatably arranged on the pin shaft, and the power part is connected with the driving rod so as to drive the driving rod to rotate along a first direction or a second direction relative to the pin shaft;

the driving rod is connected with the switching component so as to drive the switching component to move relative to the chuck body;

the switching assembly is connected with the clamping connecting piece so as to drive the clamping connecting piece to drive the clamp to move;

and the check ring is arranged in the clamping groove and protrudes out of the opening of the clamping groove to be abutted against the upper part of the semicircular pin.

In an embodiment of the present invention, the first mounting groove is adapted to the semicircular pin, and the end of the pin is a cambered surface so as to adapt to the cambered surface where the orifice of the mounting hole is located.

In an embodiment of the present invention, the retainer ring is a split retainer ring, the slot includes a first port and a second port, and the clamp driving mechanism further includes:

the baffle is connected with the semicircular pin and is stopped at the first port and the second port to prevent the stop ring from being separated from the clamping groove.

In an embodiment of the present invention, the clamp driving mechanism further includes:

the buckle cover is connected with the semicircular pin and is stopped on the inner surface of the check ring.

In an embodiment of the present invention, the baffle and the cover are detachably connected to the semicircular pin, and the cover is located between the retaining ring and the baffle.

The utility model discloses an in the embodiment, the draw-in groove is two, and the semicircle round pin is two, and the round pin axle is worn to establish in two semicircle round pins, and retaining ring, baffle and buckle closure are also two.

The utility model discloses an in the embodiment, the retaining ring includes a plurality of arc pieces, and a plurality of arc pieces independently set up in the draw-in groove.

In an embodiment of the present invention, the adapter assembly includes:

the push rod is provided with a second mounting groove, the driving rod is provided with a bulge, and the bulge is positioned in the second mounting groove;

the push rod is connected with the adjusting rod;

and the adjusting rod and the locking nut clamp and clamp the connecting piece.

In an embodiment of the present invention, the clamping connection member is a rack, the push rod is connected with the adjusting rod by a screw, and the clamp driving mechanism further includes:

the rack cushion block is connected with the chuck body, and the clamping connecting piece is movably arranged along the rack cushion block;

the rack pressing plate is connected with the chuck body and used for limiting and clamping the connecting piece so as to prevent the clamping connecting piece from being separated from the chuck body.

According to the utility model discloses a second aspect provides a chuck clamping device, including foretell anchor clamps actuating mechanism and anchor clamps, anchor clamps are installed on anchor clamps actuating mechanism.

The utility model discloses an anchor clamps actuating mechanism includes the chuck body, semicircle round pin, round pin axle, drive division, switching subassembly, clamping connecting piece and retaining ring, and drive division drives clamping connecting piece through drive switching subassembly and realizes removing for the chuck body to rotate along first direction or second direction for the round pin axle through the actuating lever and realize clamping connecting piece along being close to central point and put or keep away from central point and put and remove, thereby realize that anchor clamps press from both sides tight work piece or the interior clamping work piece of anchor clamps outward. And in the process that the driving rod rotates relative to the pin shaft along the first direction or the second direction, the semicircular pin can be subjected to forces in two opposite directions, at the moment, the upper part of the semicircular pin is abutted against the check ring, and the lower part of the semicircular pin is abutted against the main shaft, so that the force applied to the semicircular pin is finally transmitted to the chuck body or the main shaft, and the clamping connecting piece can move along the position close to the center or the position far from the center, so that the workpiece can be clamped outside the clamp and the workpiece can be clamped inside the clamp. The clamp has the advantages of improved clamping stroke, good universality, simple structure, high repeated centering precision of both the outer clamp and the inner clamp, and good stability.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic illustration of a partial configuration of a chuck actuating mechanism according to an exemplary embodiment;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 from direction S1;

FIG. 4 is a schematic view of the structure of FIG. 2 from direction S2;

FIG. 5 is an exploded schematic view of an adapter assembly and clamp connection of a clamp drive mechanism according to an exemplary embodiment;

FIG. 6 is an exploded schematic view of a semicircular pin, a retainer ring, a retaining cap, and a stop plate of a clamp driving mechanism according to an exemplary embodiment;

fig. 7 is a schematic diagram illustrating a partial structure of a chuck body of a chuck drive mechanism according to an exemplary embodiment.

The reference numerals are explained below:

10. a chuck body; 11. a first mounting groove; 12. a card slot; 121. a first port; 122. a second port; 13. a main shaft; 20. a semicircular pin; 21. mounting holes; 30. a pin shaft; 31. a key; 40. a drive section; 41. a power member; 42. a drive rod; 421. a protrusion; 50. a switching component; 51. a push rod; 511. a second mounting groove; 52. an adjusting lever; 53. locking the nut; 60. clamping the connecting piece; 61. a rack cushion block; 62. a rack pressing plate; 70. a retainer ring; 71. an arc-shaped block; 80. covering; 90. and a baffle plate.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

An embodiment of the utility model provides a fixture driving mechanism for drive fixture removes, please refer to fig. 1 to fig. 7, fixture driving mechanism includes: the chuck body 10 is provided with a first mounting groove 11 and a clamping groove 12, and the chuck body 10 is used for being connected to a main shaft 13; the semicircular pin 20 is arranged in the first mounting groove 11, a mounting hole 21 is formed in the semicircular pin 20, and the bottom end of the semicircular pin 20 is abutted to the main shaft 13; the pin shaft 30 is arranged in the mounting hole 21 in a penetrating manner; the driving part 40, the driving part 40 includes a power component 41 and a driving rod 42, the driving rod 42 is rotatably disposed on the pin 30, the power component 41 is connected with the driving rod 42 to drive the driving rod 42 to rotate along the first direction or the second direction relative to the pin 30; the adapter assembly 50, the driving rod 42 is connected with the adapter assembly 50 to drive the adapter assembly 50 to move relative to the chuck body 10; the clamping connector 60 is arranged on the chuck body 10 and used for installing the clamp, and the switching assembly 50 is connected with the clamping connector 60 so as to drive the clamping connector 60 to drive the clamp to move; and the retainer ring 70 is arranged in the clamping groove 12, and protrudes out of the opening of the clamping groove 12 to be abutted against the upper part of the semicircular pin 20.

The utility model discloses an anchor clamps actuating mechanism of embodiment includes chuck body 10, semicircle round pin 20, round pin axle 30, drive division 40, switching subassembly 50, clamping connecting piece 60 and retaining ring 70, drive division 40 drives clamping connecting piece 60 through drive switching subassembly 50 and realizes removing for chuck body 10, and rotate along first direction or second direction for round pin axle 30 through actuating lever 42 and realize clamping connecting piece 60 along being close to central point and putting or keeping away from central point and remove, thereby realize that the outer tight work piece of clamp of anchor clamps or the interior tight work piece of clamp of anchor clamps. And during the process that the driving rod 42 rotates relative to the pin shaft 30 along the first direction or the second direction, the semicircular pin 20 is subjected to two forces in opposite directions, at this time, because the upper part of the semicircular pin 20 abuts against the retainer ring 70 and the lower part of the semicircular pin 20 abuts against the spindle 13, the force applied to the semicircular pin 20 is finally transmitted to the chuck body 10 or the spindle 13, and therefore the clamping connection piece 60 can move along the position close to the center or away from the center, so that the workpiece can be clamped outside the clamp and the workpiece can be clamped inside the clamp. The clamp has the advantages of improved clamping stroke, good universality, simple structure, high repeated centering precision of both the outer clamp and the inner clamp, and good stability.

It should be noted that, referring to fig. 1 and fig. 2, when the power member 41 moves downward, that is, the driving rod 42 is driven to rotate in a first direction (i.e., counterclockwise) relative to the pin shaft 30, the driving rod 42 drives the adapter assembly 50 and the clamping connection member 60 to move in a direction close to the center position, at this time, the clamp clamps the workpiece by self-centering, and the semicircular pin 20 is forced downward, and the bottom end surface of the semicircular pin 20 transmits the force to the upper plane of the main shaft 13, so as to limit the downward movement of the semicircular pin 20. When the power member 41 moves upward, that is, the driving rod 42 is driven to rotate in the second direction (that is, clockwise) relative to the pin shaft 30, the driving rod 42 drives the adapter assembly 50 and the clamping link 60 to move in the direction away from the central position, at this time, the clamp clamps the workpiece by self-centering clamping, and the semicircular pin 20 is subjected to an upward force, and the top of the semicircular pin 20 transmits the force to the chuck body 10 through the check ring 70, so as to limit the semicircular pin 20 to move upward.

It should be noted that, when positioning a workpiece, at least three clamping connectors 60 are required to drive at least three clamps to move, so as to clamp the workpiece, and therefore it is required to ensure that each clamping connector 60 corresponds to the semicircular pin 20, the pin 30, and the adapter assembly 50, and one power component 41 can drive at least three driving rods 42 at the same time, as shown in fig. 3, a triangle is formed in the middle of the power component 41, that is, three sides of the triangle can be connected to one driving rod 42, at this time, the power component 41 is installed at the center of the clamp driving mechanism, and all three clamping connectors 60 are movably installed on the chuck body 10.

In one embodiment, the pin 30 is fixedly connected to the semicircular pin 20 by a key 31.

In one embodiment, the first mounting groove 11 is adapted to the semicircular pin 20, and the end of the pin 30 is a cambered surface to be adapted to the cambered surface of the opening of the mounting hole 21, so as to ensure that the pin 30 can extend from one end of the mounting hole 21, and the other end of the mounting hole 21 is exactly flush with the end surface of the pin 30, so as to ensure that the pin 30 is reliably connected in the mounting hole 21, and to ensure that the stress at each position of the semicircular pin 20 is uniform.

In one embodiment, the retainer ring 70 is a split retainer ring, the card slot 12 includes a first port 121 and a second port 122, and the clamp driving mechanism further includes: the baffle 90 is connected with the semicircular pin 20, and the baffle 90 stops at the first port 121 and the second port 122 to prevent the stop ring 70 from being separated from the clamping groove 12 through the first port 121 or the second port 122, so that the retainer ring 70 can be reliably pressed against the semicircular pin 20.

Specifically, as shown in fig. 2, 6 and 7, the locking groove 12 is a non-closed annular groove, and the retainer ring 70 is fitted into the locking groove 12, so that in actual use, the retainer ring 70 may rotate back relative to the locking groove 12, and therefore, there is a possibility that a partial segment of the retainer ring 70 is separated from the locking groove 12, and therefore, the end of the retainer ring 70 is stopped by the baffle 90 on the first port 121 and the second port 122, so that the end of the retainer ring 70 can be prevented from protruding from the first port 121 or the second port 122.

In one embodiment, as shown in fig. 2, 6 and 7, the clamp driving mechanism further comprises: the buckle cover 80 is connected with the semicircular pin 20, and the buckle cover 80 is stopped on the inner surface of the retainer ring 70, so that the buckle cover 80 can expand the retainer ring 70, further prevent the retainer ring 70 from separating from the clamping groove 12, and ensure that the retainer ring 70 integrally protrudes out of the opening of the clamping groove 12 along the circumferential direction of the clamping groove 12.

In one embodiment, the baffle 90 and the cover 80 are removably attached to the semicircular pin 20, with the cover 80 being positioned between the retainer ring 70 and the baffle 90.

Specifically, the baffle 90 is connected to the semicircular pin 20 by clipping, bonding or fastening, and the buckle cover 80 is connected to the semicircular pin 20 by clipping, bonding or fastening.

It should be noted that the specific structural form of the baffle 90 is not limited as long as the stop of the retainer ring 70 can be achieved, and the outer surface of the buckle cover 80 needs to be matched with the inner surface of the retainer ring 70, and the specific structural form is not limited. In this embodiment, the specific structure of the baffle 90 and the buckle cover 80 can be seen in fig. 6.

In one embodiment, there are two slots 12, two semicircular pins 20, two pin shafts 30 penetrating the two semicircular pins 20, and two retaining rings 70, two retaining plates 90, and two retaining caps 80.

Specifically, as shown in fig. 2 and 4, one pin 30 is inserted into two semicircular pins 20, and each semicircular pin is provided with a retaining ring 70, a baffle 90 and a buckle cover 80, so as to ensure that the two semicircular pins 20 can stably transmit force to the spindle 13 or the chuck body 10.

In one embodiment, as shown in fig. 6, the retainer ring 70 includes a plurality of arcuate segments 71, and the plurality of arcuate segments 71 are independently disposed within the card slot 12. The arrangement of the arc blocks 71 can facilitate installation into the card slot 12 and disassembly. In this embodiment, the arc-shaped blocks 71 may be three.

In one embodiment, as shown in fig. 1 and 5, the adapter assembly 50 includes: the push rod 51, the push rod 51 is provided with a second mounting groove 511, the driving rod 42 is provided with a projection 421, and the projection 421 is positioned in the second mounting groove 511; an adjusting rod 52, the push rod 51 is connected with the adjusting rod 52; the adjusting rod 52 is connected with the locking nut 53, and the adjusting rod 52 and the locking nut 53 clamp the clamping connecting piece 60.

The driving rod 42 is connected with the push rod 51, the push rod 51 is connected with the adjusting rod 52, the adjusting rod 52 is connected with the locking nut 53, and the clamping connecting piece 60 is clamped between the adjusting rod 52 and the locking nut 53, so that the driving rod 42 can synchronously drive the push rod 51, the adjusting rod 52, the locking nut 53 and the clamping connecting piece 60 to move. The power member 41 may include a cylinder and a cylinder rod.

Specifically, when a workpiece needs to be clamped in the inner clamp, the oil cylinder rod (which may be a fitting of the spindle 13) moves upwards to drive the driving rod 42 to rotate clockwise, so as to push the push rod 51, the adjusting rod 52, the lock nut 53 and the clamping connecting piece 60 to move away from the center, and the inner clamp clamps the workpiece from the center, otherwise, the workpiece is loosened. When a workpiece needs to be clamped externally, the oil cylinder rod moves downwards to drive the driving rod 42 to rotate anticlockwise, the push rod 51, the adjusting rod 52, the locking nut 53 and the clamping connecting piece 60 are pulled to move towards the center, the external clamp clamps the workpiece from the center, and otherwise the workpiece is loosened.

In one embodiment, the clamp connection member 60 is a rack, the push rod 51 is threadedly coupled to the adjustment rod 52, and the clamp driving mechanism further includes: the rack cushion block 61 is connected with the chuck body 10, and the clamping connecting piece 60 is movably arranged along the rack cushion block 61; the rack pressing plate 62 is connected with the chuck body 10, and the rack pressing plate 62 is used for limiting the clamping connector 60 to prevent the clamping connector 60 from being separated from the chuck body 10.

Specifically, as shown in fig. 1 and 2, the rack pressing plate 62 and the rack cushion block 61 limit the rack, so that the rack is prevented from being separated from the chuck body 10, and the rack can be moved relative to the chuck body 10.

It should be noted that the push rod 51 is screwed with the adjusting rod 52, and the adjusting rod 52 and the lock nut 53 clamp the clamping connector 60, so that the clamping connector 60 can be adjusted radially by the adjusting rod 52 and the lock nut 53, i.e. the length of the screwed connection is changed. Since the clamp connection member 60 needs to be used in plural, position adjustment is required.

In one embodiment, the rack pad 61 is removably connected to the chuck body 10 so that it can be replaced in the event that the rack pad 61 is worn out significantly. Of course, it is not excluded that the rack spacer 61 and the chuck body 10 are of an integral structure, i.e., they are not detachable.

In one embodiment, rack press 62 is removably coupled to chuck body 10, or rack press 62 is integral with chuck body 10, i.e., both are not removable.

In one embodiment, the clamping connector 60 is a rack, the rack is made of 45 steel, and the rack pad 61 and the rack pressure plate 62 are made of QT500 (nodular cast iron).

An embodiment of the utility model also provides a chuck clamping device, including foretell anchor clamps actuating mechanism and anchor clamps, anchor clamps are installed on anchor clamps actuating mechanism.

In one embodiment, three clamp connectors 60 are provided on one chuck body 10, each clamp connector 60 has a semicircular pin 20, a pin shaft 30, and an adapter assembly 50, and one power member 41 can simultaneously drive three driving rods 42. In actual use, the clamp fixed to the clamp link 60 clamps the workpiece (outer clamp) as it moves toward the center with the clamp link 60, and releases the workpiece as the rack moves in the reverse direction. The clamping of the workpiece (inner clamp) can also be realized when the clamping connecting piece 60 moves away from the center, and the workpiece is loosened when the clamping connecting piece 60 moves reversely.

The utility model discloses a chuck clamping device is that can two-way atress surge from centering chuck clamping mechanism, both can press from both sides from centering clamping workpiece outward, and the interior clamp of doing is from centering clamping workpiece, presss from both sides tight stroke length, the commonality is good, repeated centering precision is high, stability is good. The problem of axial positioning of the semicircular pin is solved skillfully in a limited space, so that the synchronous rack can be stressed in two directions instead of being stressed in one direction, and the structure of the clamp can be simplified.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A clamp driving mechanism for driving a clamp to move, the clamp driving mechanism comprising:

the chuck body (10), a first mounting groove (11) and a clamping groove (12) are arranged on the chuck body (10), and the chuck body (10) is used for being connected to a spindle (13);

the semicircular pin (20) is arranged in the first mounting groove (11), a mounting hole (21) is formed in the semicircular pin (20), and the bottom end of the semicircular pin (20) is abutted to the main shaft (13);

the pin shaft (30) penetrates through the mounting hole (21);

the driving part (40) comprises a power piece (41) and a driving rod (42), the driving rod (42) is rotatably arranged on the pin shaft (30), and the power piece (41) is connected with the driving rod (42) so as to drive the driving rod (42) to rotate along a first direction or a second direction relative to the pin shaft (30);

the adapter assembly (50), the driving rod (42) is connected with the adapter assembly (50) to drive the adapter assembly (50) to move relative to the chuck body (10);

the clamping connecting piece (60) is arranged on the chuck body (10) and used for mounting the clamp, and the switching assembly (50) is connected with the clamping connecting piece (60) so as to drive the clamping connecting piece (60) to drive the clamp to move;

the retainer ring (70) is arranged in the clamping groove (12), protrudes out of the opening of the clamping groove (12) and is abutted against the upper part of the semicircular pin (20).

2. The clamp driving mechanism according to claim 1, wherein the first mounting groove (11) is adapted to the semicircular pin (20), and the end of the pin (30) is a cambered surface to be adapted to the cambered surface of the opening of the mounting hole (21).

3. The clamp drive mechanism according to claim 1, wherein the retainer ring (70) is a split retainer ring, the card slot (12) includes a first port (121) and a second port (122), the clamp drive mechanism further comprising:

a baffle plate (90), wherein the baffle plate (90) is connected with the semicircular pin (20), and the baffle plate (90) stops at the first port (121) and the second port (122) to prevent the retainer ring (70) from being separated from the clamping groove (12).

4. The clamp drive mechanism of claim 3, further comprising:

the buckle cover (80), the buckle cover (80) with semicircle round pin (20) is connected, buckle cover (80) backstop in the internal surface of retaining ring (70).

5. The clamp drive mechanism according to claim 4, wherein said stop plate (90) and said cover button (80) are both removably attached to said semicircular pin (20), said cover button (80) being located between said retainer ring (70) and said stop plate (90).

6. The clamp driving mechanism according to claim 4, wherein there are two clamping grooves (12), two semicircular pins (20), two pin shafts (30) penetrating the two semicircular pins (20), and two retaining rings (70), two baffle plates (90) and two buckle covers (80).

7. The clamp driving mechanism according to any one of claims 3 to 6, wherein the retainer ring (70) includes a plurality of arc-shaped blocks (71), and the plurality of arc-shaped blocks (71) are independently disposed in the card slot (12).

8. The clamp drive mechanism of claim 1, wherein the adapter assembly (50) comprises:

the push rod (51), there is the second mounting groove (511) on the said push rod (51), there are bulges (421) on the said actuating lever (42), the said bulge (421) locates in the said second mounting groove (511);

the adjusting rod (52), the push rod (51) is connected with the adjusting rod (52);

the adjusting rod (52) is connected with the locking nut (53), and the adjusting rod (52) and the locking nut (53) clamp the clamping connecting piece (60).

9. The clamp driving mechanism according to claim 8, wherein the clamping link (60) is a rack, the push rod (51) is threadedly connected to the adjustment rod (52), and the clamp driving mechanism further comprises:

the rack cushion block (61), the rack cushion block (61) is connected with the chuck body (10), and the clamping connecting piece (60) is movably arranged along the rack cushion block (61);

the clamping device comprises a rack pressing plate (62), wherein the rack pressing plate (62) is connected with the chuck body (10), and the rack pressing plate (62) is used for limiting the clamping connecting piece (60) so as to prevent the clamping connecting piece (60) from being separated from the chuck body (10).

10. A chuck clamping device comprising the chuck driving mechanism according to any one of claims 1 to 9 and a chuck mounted on the chuck driving mechanism.