Chuck type pneumatic axial locking device

Abstract

The utility model relates to a chuck type pneumatic axial locking device, relate to axial locking technical field, including frame, workstation, lower dog disc, upper dog disc, connecting plate and push cylinder, the upper surface of frame is connected with workstation, the upper surface of workstation is rotatably connected with lower dog disc, the side surface of lower dog disc and the output of push cylinder articulate, and the other end of push cylinder articulates on the workstation, the upper surface of lower dog disc is equipped with a circle locking gap, and the side surface on upper dog disc is equipped with the locking protrusion that cooperates with locking gap, and locking protrusion is clamped into locking gap, and connecting plate is connected on upper dog disc. Advantages are that: upper dog disc moves down, and locking protrusion is clamped into locking gap, and through push cylinder and rotate lower dog disc, make upper and lower dog disc tightly bite, especially in some high air pressure occasion or vertical moving equipment, the utility model discloses simple structure, the manufacturing cost is low, and the axial locking force is greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of axial locking technology, and more specifically, to a chuck-type pneumatic axial locking device. Background Technology

[0002] In today's society, mechanical equipment is widely used in all aspects of our daily lives. The following are some of the more commonly used axial locking mechanisms at home and abroad: ① Tangential clamping mechanism; ② Radial hydraulic clamping mechanism; ③ Gear backlash elimination mechanism; ④ Worm gear backlash elimination mechanism; ⑤ Direct drive motor, etc.

[0003] Tangential clamping mechanisms are suitable for shafts with small diameters, such as clamping tailstock center shafts. Radial hydraulic clamping mechanisms use hydraulic pressure to cause slight deformation of thin-walled parts in the hydraulic device to clamp the main shaft. However, this requires high-precision manufacturing of thin-walled parts and can easily lead to the inability to release the clamped shaft. It is also difficult to achieve a semi-clutch working state and self-locking upon shutdown. For high-torque main shafts, double driven gear backlash elimination mechanisms cannot meet the requirements, and only double driving gear backlash elimination mechanisms can be used, which are expensive. Among worm gear backlash elimination mechanisms, there are mechanisms using double worms, which are relatively expensive and difficult to adjust. There are also mechanisms using double-lead worms, but these wear out quickly, have a short service life, and experience rapid loss of accuracy. When implemented with direct motor drive, a large motor power is required, resulting in high heat generation and relatively high cost.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a chuck-type pneumatic axial locking device, which has a simple structure, low manufacturing cost, and greatly enhances the axial locking force.

[0006] This utility model provides a chuck-type pneumatic axial locking device, including a frame, a worktable, a lower chuck disc, an upper chuck disc, a connecting plate, and a pushing cylinder; the worktable is connected to the top of the frame, and the lower chuck disc is rotatably connected to the middle of the worktable. The side of the lower chuck disc is hinged to the output end of the pushing cylinder, and the other end of the pushing cylinder is hinged to the worktable; a locking notch is provided on the top of the lower chuck disc, and a locking protrusion that mates with the locking notch is provided on the side of the upper chuck disc. The locking protrusion engages with the locking notch, and the connecting plate is connected to the upper chuck disc.

[0007] Using the above technical solution, when the chuck-type pneumatic axial locking device is used, the mechanism that needs to be axially locked is fixedly connected to the connecting plate; the upper jaw plate moves down, the locking protrusion engages in the locking notch, and the lower jaw plate is rotated by pushing the cylinder, so that the upper and lower jaw plates are tightly engaged.

[0008] Furthermore, the chuck-type pneumatic axial locking device also includes a support bearing connected to the middle of the worktable; the lower jaw disc is tubular and is sleeved and connected to the support bearing; an annular plate is provided at the upper edge of the lower jaw disc, and multiple locking notches are provided at equal intervals on the annular plate.

[0009] Furthermore, two connecting pieces are spaced apart on the side of the lower jaw disc, and the output end of the push cylinder is hinged between the two connecting pieces.

[0010] Furthermore, a hinge plate is connected above the worktable. The hinge plate has an L-shaped cross-section, and the tail end of the push cylinder is hinged to the hinge plate.

[0011] The chuck-type pneumatic axial locking device provided by this utility model has a mechanism for axial locking that is fixedly connected to a connecting plate. The upper jaw plate moves down, and the locking protrusion engages with the locking notch. By pushing the cylinder, the lower jaw plate is rotated, so that the upper and lower jaw plates are tightly engaged. Especially in some high-pressure applications or vertically moving equipment, this utility model device has a simple structure, low manufacturing cost, and greatly enhances the axial locking force. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the chuck-type pneumatic axial locking device provided in the embodiment of this utility model.

[0013] Figure 2 for Figure 1 A schematic diagram of the disassembled structure of the chuck-type pneumatic axial locking device.

[0014] Figure 3 for Figure 1 A schematic diagram of the lower and upper jaw discs of the middle chuck type pneumatic axial locking device.

[0015] The reference numerals and components involved in the accompanying drawings are shown below:

[0016] 1. Frame 2. Workbench 21. Hinge plate

[0017] 3. Lower jaw disc 31, locking notch 32, annular plate

[0018] 33. Connecting piece 4. Upper jaw disc 41. Locking protrusion

[0019] 5. Connecting plate; 6. Push cylinder; 7. Support bearing Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] Example 1

[0023] Figure 1 This is a schematic diagram of the structure of the chuck-type pneumatic axial locking device provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram showing the disassembled structure of the chuck-type pneumatic axial locking device. Figure 3 for Figure 1 A schematic diagram of the lower and upper jaw discs of the chuck-type pneumatic axial locking device. Please refer to... Figure 1 , Figure 2 , Figure 3 The chuck-type pneumatic axial locking device provided in this embodiment includes a frame 1, a worktable 2, a lower chuck disc 3, an upper chuck disc 4, a connecting plate 5, and a pushing cylinder 6. The worktable 2 is connected to the top of the frame 1, and the lower chuck disc 3 is rotatably connected to the middle of the worktable 2. The side of the lower chuck disc 3 is hinged to the output end of the pushing cylinder 6, and the other end of the pushing cylinder 6 is hinged to the worktable 2. A locking notch 31 is provided on the top of the lower chuck disc 3, and a locking protrusion 41 that cooperates with the locking notch 31 is provided on the side of the upper chuck disc 4. The locking protrusion 41 is engaged in the locking notch 31, and the connecting plate 5 is connected to the upper chuck disc 4.

[0024] It should be noted that when using the chuck-type pneumatic axial locking device of this utility model, the mechanism for axial locking is fixedly connected to the connecting plate 5; the upper jaw plate 4 moves down, and the locking protrusion 41 engages in the locking notch 31. By pushing the cylinder 6 to rotate the lower jaw plate 3, the upper and lower jaw plates 3 are tightly engaged. Especially in some high-pressure environments or vertically moving equipment, this utility model device has a simple structure, low manufacturing cost, and greatly enhances the axial locking force.

[0025] Further reference Figure 2 The chuck-type pneumatic axial locking device of this utility model also includes a support bearing 7, which is connected to the middle of the worktable 2; the lower jaw disc 3 is tubular and is sleeved and connected to the support bearing 7; an annular piece 32 is provided at the upper edge of the lower jaw disc 3, and a plurality of locking notches 31 are provided at equal intervals on the annular piece 32.

[0026] Further reference Figure 3 In this invention, two connecting pieces 33 are connected at intervals on the side of the lower jaw disc 3, and the output end of the push cylinder 6 is hinged between the two connecting pieces 33.

[0027] Further reference Figure 1 In addition, a hinge plate 21 is connected above the workbench 2. The cross-section of the hinge plate 21 is L-shaped, and the tail end of the push cylinder 6 is hinged to the hinge plate 21.

[0028] As can be seen from the above description, the advantages of this utility model are:

[0029] This utility model discloses a chuck-type pneumatic axial locking device. During use, the mechanism for axial locking is fixedly connected to the connecting plate. The upper jaw plate moves down, and the locking protrusion engages with the locking notch. By pushing the cylinder, the lower jaw plate is rotated, so that the upper and lower jaw plates are tightly engaged. Especially in some high-pressure environments or vertically moving equipment, this utility model device has a simple structure, low manufacturing cost, and greatly enhances the axial locking force.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A chuck-type pneumatic axial locking device, characterized in that, It includes a frame (1), a worktable (2), a lower jaw plate (3), an upper jaw plate (4), a connecting plate (5), and a push cylinder (6); The workbench (2) is connected to the top of the frame (1). The lower jaw disk (3) is rotatably connected to the middle of the workbench (2). The side of the lower jaw disk (3) is hinged to the output end of the push cylinder (6). The other end of the push cylinder (6) is hinged to the workbench (2). The lower jaw disc (3) has a locking notch (31) on its upper surface, and the upper jaw disc (4) has a locking protrusion (41) on its side surface that cooperates with the locking notch (31). The locking protrusion (41) is inserted into the locking notch (31), and the connecting plate (5) is connected to the upper jaw disc (4).

2. The chuck-type pneumatic axial locking device according to claim 1, characterized in that, The chuck-type pneumatic axial locking device also includes a support bearing (7), which is connected to the middle of the worktable (2); the lower jaw disc (3) is tubular and is sleeved on the support bearing (7); an annular piece (32) is provided at the upper edge of the lower jaw disc (3), and multiple locking notches (31) are provided at equal intervals on the annular piece (32).

3. The chuck-type pneumatic axial locking device according to claim 2, characterized in that, Two connecting pieces (33) are connected at intervals on the side of the lower jaw disk (3), and the output end of the push cylinder (6) is hinged between the two connecting pieces (33).

4. The chuck-type pneumatic axial locking device according to claim 3, characterized in that, A hinge plate (21) is also connected above the workbench (2). The cross-section of the hinge plate (21) is L-shaped, and the tail end of the push cylinder (6) is hinged to the hinge plate (21).

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