CN219425698U

CN219425698U - Full-stroke chuck jaw movement mechanism

Info

Publication number: CN219425698U
Application number: CN202320339179.8U
Authority: CN
Inventors: 陈晖�; 王金荣; 陈扬东; 徐念非; 孔杰; 金海根; 王成; 冷志斌
Original assignee: Jiangsu Yawei Machine Tool Co Ltd
Current assignee: Jiangsu Yawei Machine Tool Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-28
Anticipated expiration: 2033-02-28

Abstract

The utility model provides a full-stroke chuck jaw movement mechanism, which relates to the technical field of chucks and comprises a guide rail fixing plate, a centering disc, a rotary main shaft and a supporting plate, wherein the rotary main shaft is arranged at the inner center of the supporting plate, two groups of centering discs are sleeved at the upper end of the rotary main shaft, the guide rail fixing plate is arranged at the upper end of the centering disc, and through holes are formed in the centers of the guide rail fixing plate, the centering disc, the rotary main shaft and the supporting plate; four groups of linear guide rails are arranged on the upper end face of the guide rail fixing plate, guide rail connecting seats are connected to each group of linear guide rails in a sliding mode, the guide rail connecting seats move back and forth on the linear guide rails, and clamping claws are arranged on the guide rail connecting seats. The full-stroke chuck jaw movement mechanism is compact in structure, low in pneumatic clamping cost, free of jaw replacement during full-stroke jaw movement, high in clamping efficiency and high in transmission rigidity, and clamping efficiency and precision stability of the chuck can be effectively improved.

Description

Full-stroke chuck jaw movement mechanism

Technical Field

The utility model relates to the technical field of chucks, in particular to a full-stroke chuck jaw movement mechanism.

Background

The soft claw is generally used for part finish machining clamping, belongs to containing type clamping, and is characterized in that the clamping diameter of the soft claw is obtained by turning and correcting the whole soft claw clamping part through a machine tool, and the clamping size of the soft claw is mainly determined by the diameter of the clamping part of the machined part, so that the soft claw structure is more suitable for the same clamping diameter size and the field of mass product manufacturing.

In the specification of the reference "CN217858848U, a chuck jaw", a jaw and a clamping head for clamping a workpiece are mentioned, the jaw end being provided with an engagement groove; the clamping head comprises a meshing lug which is meshed with the meshing groove, and the clamping head is detachably connected to the clamping jaw through a connecting piece, but the clamping jaw in the comparison document is driven by electric power, so that the clamping jaw is blocked, and the clamping jaw is unstable and reliable to use.

Disclosure of Invention

In order to overcome the defects existing in the prior art, a full-stroke chuck jaw movement mechanism is provided, so that the problems that chuck jaws in a comparison document are driven by electric power, the risk of clamping exists, and the use is unstable and reliable are solved.

In order to achieve the above purpose, a full-stroke chuck jaw moving mechanism is provided, which comprises a guide rail fixing plate, a centering disc, a rotating main shaft and a supporting plate, wherein the rotating main shaft is arranged at the inner center of the supporting plate, the upper end of the rotating main shaft is sleeved with two groups of centering discs, the guide rail fixing plate is arranged at the upper end of the centering disc, through holes are formed in the centers of the guide rail fixing plate, the centering disc, the rotating main shaft and the supporting plate, and the centers of the guide rail fixing plate, the centering disc, the rotating main shaft and the supporting plate are all located on the same axis.

Further, four groups of linear guide rails are arranged on the upper end face of the guide rail fixing plate, guide rail connecting seats are connected to each group of linear guide rails in a sliding mode, the guide rail connecting seats move back and forth on the linear guide rails, and clamping jaws are arranged on the guide rail connecting seats.

Furthermore, four groups of circular arc grooves are formed in the centering disc, a group of driving wheels are movably arranged in each group of circular arc grooves on the centering disc, and the centering disc is of a rotating structure.

Further, four groups of pneumatic driving modules are arranged on the lower end face of the clamping jaw, one end of each group of pneumatic driving modules is fixedly connected with the guide rail fixing plate, and the other end of each group of pneumatic driving modules is movably connected with the centering disc.

Furthermore, two groups of centering discs sleeved on the rotary main shaft are vertically crossed, and each group of centering discs is driven to move by a corresponding group of pneumatic driving modules.

Furthermore, a group of connecting blocks are fixed at the ends of the four-side connecting plates of the supporting plate, and the four groups of connecting blocks are enclosed on the periphery of the guide rail fixing plate, the centering disc and the rotating main shaft on the upper end face of the supporting plate.

The utility model has the beneficial effects that:

1. the guide rail connecting seat is connected to the linear guide rail in a sliding way, the clamping jaw can be driven to synchronously move when the guide rail connecting seat moves, and when the driving wheel drives the clamping jaw to move along the length direction of the linear guide rail, a certain offset distance is reserved between the driving wheel and the center of the clamping jaw, so that the stroke of the driving wheel can be effectively increased, the clamping jaw can move in a full stroke way, meanwhile, the single linear guide rail of the clamping jaw can be guided, and the structure is simplified.

2. When the pneumatic driving modules push the centering discs to rotate relative to the rotary main shaft, the opposite clamping jaws can synchronously contract or expand, each centering disc is driven by the two groups of pneumatic driving modules, the clamping force of the clamping jaws can be greatly improved, the circular arc grooves of the centering discs are designed by adopting special curves, the constant transmission ratio of the driving force of the pneumatic driving modules and the clamping force of the clamping jaws can be realized, and different clamping forces can be realized by setting different air pressures.

3. The inner ring of the supporting plate is connected to one end of the rotating main shaft, the other end of the rotating main shaft is connected with the inner ring of the guide rail fixing plate, meanwhile, the guide rail fixing plate and the outer ring of the supporting plate are connected into a whole through the connecting block, and the guide rail fixing plate and the inner ring and the outer ring of the supporting plate are connected simultaneously to form a box type structure, so that the transmission rigidity of the whole mechanism is improved.

Drawings

FIG. 1 is a front-screen effect diagram of an embodiment of the present utility model;

FIG. 2 is a rear-threshold effect diagram of an embodiment of the present utility model;

FIG. 3 is a schematic top view of an embodiment of the present utility model;

FIG. 4 is a schematic bottom view of an embodiment of the present utility model;

fig. 5 is a schematic diagram illustrating the separation of structures according to an embodiment of the present utility model.

In the figure: 1. a claw; 2. a guide rail connecting seat; 3. a linear guide rail; 4. a guide rail fixing plate; 5. centering plate; 6. a driving wheel; 7. a pneumatic drive module; 8. rotating the main shaft; 9. a connecting block; 10. and a support plate.

Description of the embodiments

In order to make the technical problems, technical schemes and beneficial effects to be solved more clearly apparent, the present utility model is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are offered by way of illustration only and not as limitations of the utility model, and specific details such as particular system architectures, techniques, etc. may be set forth in order to provide a more thorough understanding of the embodiments of the utility model. The described embodiments are some, but not all, embodiments of the present disclosure. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. Based on the embodiments in this disclosure, all other embodiments that a person skilled in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

Fig. 1 is a front threshold of an embodiment of the present utility model, fig. 2 is a rear threshold of an embodiment of the present utility model, fig. 3 is a schematic top view of an embodiment of the present utility model, fig. 4 is a schematic bottom view of an embodiment of the present utility model, and fig. 5 is a schematic structure separation of an embodiment of the present utility model.

Referring to fig. 1 to 5, the utility model provides a full-stroke chuck jaw moving mechanism, which comprises a guide fixing plate 4, a centering disc 5, a rotating main shaft 8 and a supporting plate 10, wherein the rotating main shaft 8 is arranged at the inner center of the supporting plate 10, two groups of centering discs 5 are sleeved at the upper end of the rotating main shaft 8, the guide fixing plate 4 is arranged at the upper end of the centering disc 5, through holes are formed in the centers of the guide fixing plate 4, the centering disc 5, the rotating main shaft 8 and the supporting plate 10, and the centers of the guide fixing plate 4, the centering disc 5, the rotating main shaft 8 and the supporting plate 10 are all positioned on the same axis.

In this embodiment, four sets of linear guide rails 3 are disposed on the upper end surface of the guide rail fixing plate 4, and each set of linear guide rails 3 is slidably connected with a guide rail connecting seat 2, and the guide rail connecting seat 2 moves back and forth on the linear guide rails 3, and at the same time, a claw 1 is disposed on the guide rail connecting seat 2.

As a preferred embodiment, the guide rail connecting seat 2 is slidably connected to the linear guide rail 3, the clamping jaw 1 can be driven to synchronously move while the guide rail connecting seat 2 moves, and when the driving wheel 6 drives the clamping jaw 1 to move along the length direction of the linear guide rail 3, a certain offset distance exists between the driving wheel 6 and the center of the clamping jaw 1, so that the offset arrangement can effectively increase the stroke of the driving wheel 6, the clamping jaw 1 can move in a full stroke, and meanwhile, the single linear guide rail guiding of the clamping jaw 1 can be realized, and the structure is simpler.

In the embodiment, four groups of circular arc grooves are formed in the middle disc 5, a group of driving wheels 6 are movably arranged in each group of circular arc grooves on the middle disc 5, and the middle disc 5 is of a rotating structure; four groups of pneumatic driving modules 7 are arranged on the lower end face of the clamping jaw 1, one end of each group of pneumatic driving modules 7 is fixedly connected with the guide rail fixing plate 4, and the other end of each group of pneumatic driving modules 7 is movably connected with the centering disc 5.

As a preferred embodiment, when the pneumatic driving module 7 pushes the centering disc 5 to rotate relative to the rotating main shaft 8, the opposite clamping jaws 1 can synchronously retract or expand, each centering disc 5 is driven by two groups of pneumatic driving modules 7, the clamping force of the clamping jaws 1 can be greatly improved, the circular arc grooves of the centering disc 5 are designed by adopting special curves, the constant transmission ratio of the driving force of the pneumatic driving module 7 and the clamping force of the clamping jaws 1 can be realized, and different clamping forces can be realized by setting different air pressures.

In the embodiment, two sets of centering discs 5 sleeved on the rotating main shaft 8 are vertically crossed, and each set of centering discs 5 is driven to move by a corresponding set of pneumatic driving modules 7; the four-side connecting plate ends of the supporting plate 10 are all fixed with a group of connecting blocks 9, and the four groups of connecting blocks 9 are enclosed on the peripheries of the guide rail fixing plate 4, the centering disc 5 and the rotating main shaft 8 on the upper end face of the supporting plate 10.

As a preferred embodiment, the inner ring of the supporting plate 10 is connected to one end of the rotating main shaft 8, the other end of the rotating main shaft 8 is connected to the inner ring of the guide rail fixing plate 4, meanwhile, the guide rail fixing plate 4 and the outer ring of the supporting plate 10 are connected into a whole through the connecting block 9, and the guide rail fixing plate 4 and the inner ring and the outer ring of the supporting plate 10 are simultaneously connected to form a box structure, so that the transmission rigidity of the whole mechanism is improved.

Working principle: this full stroke chuck jack catch motion's every pair of jack catch 1 is by two sets of pneumatic drive module 7 drive, can promote clamping force by a wide margin, simultaneously, drive wheel 6 and linear guide 3 are rolling transmission, can effectively reduce frictional resistance, promote transmission efficiency, also avoided the risk of jack catch card to be blocked, box formula structure transmission rigidity is higher, in addition, the circular arc groove of centering dish 5 adopts special curve integrated into one piece, can realize jack catch 1, the accurate control of high accuracy to the neutralization clamping force, avoid the too big work piece deformation of clamping force or the too little work piece pine of clamping force take off, drive wheel 6 is arranged for jack catch 1 center offset, realize the synchronous centering of jack catch 1 full stroke high accuracy and remove.

The chuck jaw moving mechanism can effectively solve the problems that chuck jaws in a comparison document are driven by electric, the risk of clamping exists, and the chuck jaw moving mechanism is unstable and reliable in use.

The above-described embodiments are intended to illustrate the present utility model, not to limit it, and any modifications and variations made to the present utility model within the spirit of the utility model and the scope of the claims should be included in the scope of the present utility model.

Claims

1. The utility model provides a full stroke chuck jack catch motion, includes guide rail fixed plate (4), centering dish (5), rotatory main shaft (8) and backup pad (10), its characterized in that: the rotary spindle (8) is arranged at the inner center of the supporting plate (10), the upper end of the rotary spindle (8) is sleeved with two groups of centering plates (5), the guide rail fixing plate (4) is arranged at the upper end of the centering plates (5), through holes are formed in the centers of the guide rail fixing plate (4), the centering plates (5), the rotary spindle (8) and the supporting plate (10), and the centers of the guide rail fixing plate (4), the centering plates (5), the rotary spindle (8) and the supporting plate (10) are all located on the same axis.

2. The full-stroke chuck jaw moving mechanism according to claim 1, wherein four groups of linear guide rails (3) are arranged on the upper end face of the guide rail fixing plate (4), guide rail connecting seats (2) are connected to each group of linear guide rails (3) in a sliding mode, the guide rail connecting seats (2) move back and forth on the linear guide rails (3), and jaws (1) are arranged on the guide rail connecting seats (2).

3. The full-stroke chuck jaw moving mechanism according to claim 1, wherein four groups of circular arc grooves are formed in the centering disc (5), a group of driving wheels (6) are movably arranged in each group of circular arc grooves in the centering disc (5), and the centering disc (5) is of a rotating structure.

4. The full-stroke chuck jaw movement mechanism according to claim 1, wherein four groups of pneumatic driving modules (7) are mounted on the lower end face of the jaw (1), one end of each group of pneumatic driving modules (7) is fixedly connected with the guide rail fixing plate (4), and the other end of each group of pneumatic driving modules (7) is movably connected with the centering disc (5).

5. A full stroke chuck jaw movement mechanism according to claim 1, wherein two sets of centering discs (5) nested on the rotating spindle (8) are vertically crossed, and each set of centering discs (5) is driven to move by a corresponding set of pneumatic drive modules (7).

6. The full-stroke chuck jaw moving mechanism according to claim 1, wherein a group of connecting blocks (9) are fixed at four-side connecting plate ends of the supporting plate (10), and the four groups of connecting blocks (9) are enclosed on the peripheries of the guide rail fixing plate (4), the centering disc (5) and the rotating main shaft (8) on the upper end face of the supporting plate (10).