Disc type pneumatic swage collet

Abstract

The utility model discloses a disc type pneumatic expansion chuck, including chuck end seat, the outer surface fixed mounting of chuck end seat has the chuck shell, the inside of chuck shell is hollow structure design, the outside of chuck shell is provided with a plurality of expansion movable block, and a plurality of expansion movable blocks are distributed through the equidistance circumference of chuck shell center dot, and expansion movable block and chuck shell are connected between sliding, and the inside sliding mounting of chuck end seat has the inner piston, and the bottom end outside fixed cover of inner piston is equipped with expansion push disc, and the outer surface fixed mounting of expansion push disc has with a plurality of expansion wedge that expansion movable block adapts, the utility model discloses through the effective inside structure of existing expansion chuck simplification, optimization design, thereby can effectively reduce the inside structure complexity of expansion chuck, has good structure simplification use effect, through reducing the use quantity of parts, thereby can effectively avoid the problem of frequent damage caused by too many internal parts, and the comprehensive service life is improved.

Description

Technical Field

[0001] This utility model relates to the field of expansion clamping head technology, specifically a disc-type pneumatic expansion clamping head. Background Technology

[0002] A shrinking chuck is a mechanical device that combines the functions of a shrinking sleeve and a chuck. It is mainly used to fix machining tools such as drill bits and milling cutters, and ensures a reliable connection between the tool and the machine tool spindle through shrinking action.

[0003] The expansion collet features an internal expansion sleeve design. When the bolts are tightened, the sleeve expands axially, generating radial clamping force to securely lock the tool onto the machine tool spindle. This design can both transmit torque and accommodate axial movement, making it suitable for high-speed machining applications.

[0004] However, in actual use, it has been found that the internal expansion drive structure of traditional expansion chucks is relatively complex. In actual use, it has the characteristics of many parts and easy damage, which greatly reduces its service life. At the same time, the complex structure increases the manufacturing and maintenance costs, resulting in poor economic practicality. Therefore, this utility model proposes a simple pneumatic expansion chuck. Utility Model Content

[0005] The purpose of this invention is to provide a disc-type pneumatic expansion clamp to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a disc-type pneumatic expansion clamping chuck, comprising a chuck end seat, a chuck shell fixedly mounted on the outer surface of the chuck end seat, the interior of the chuck shell having a hollow structure design, and a plurality of expansion movable blocks arranged on the outer side of the chuck shell, the plurality of expansion movable blocks being circumferentially distributed at equal intervals around the center point of the chuck shell, the expansion movable blocks being slidably connected to the chuck shell, an inner piston being slidably mounted inside the chuck end seat, an expansion push plate being fixedly sleeved on the bottom end of the inner piston, and a plurality of expansion wedges adapted to the expansion movable blocks being fixedly mounted on the outer surface of the expansion push plate.

[0007] Preferably, the number of the tightening wedges and the tightening movable blocks are the same, and their positions correspond one-to-one.

[0008] Preferably, the tightening wedge and the tightening movable block are in contact with each other, and the contact surface between the tightening wedge and the tightening movable block is an inclined surface.

[0009] Preferably, a plurality of return springs are fixedly installed on the outer surface of the end of the tensioning push plate away from the inner piston, and the plurality of return springs are circumferentially distributed at equal intervals through the center point of the tensioning push plate.

[0010] Preferably, an inflation connector is fixedly installed at the center of the outer surface of the clamp end seat.

[0011] Preferably, each of the expansion blocks has a groove on its outer surface, and an elastic ring is fitted between the grooves of several expansion blocks.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The disc-type pneumatic expansion clamp of this utility model can drive the internal piston and expansion push plate to move by introducing high-pressure air into the air inlet. The movement of the internal piston drive structure can drive the expansion movable block to extend and expand, thereby ensuring the normal expansion clamping effect of this utility model.

[0014] As can be seen from the above, the internal drive structure of the expansion chuck of this utility model consists of only a simple internal piston and an expansion push plate. By effectively simplifying and optimizing the internal structure of the existing expansion chuck, this utility model can effectively reduce the complexity of the internal structure of the expansion chuck, and has a good effect of simplifying the structure and using it. By reducing the number of parts, it can effectively avoid the problem of frequent damage caused by too many internal parts, and improve the overall service life. At the same time, it can also effectively reduce the manufacturing difficulty and maintenance cost of the expansion chuck, and has good economic practicality. The overall structure is simpler and more convenient to use, and more practical, making it suitable for implementation. Attached Figure Description

[0015] Figure 1 This is a right-side perspective three-dimensional structural diagram of the expansion clamping head according to an embodiment of the present utility model;

[0016] Figure 2 This is a left-side perspective three-dimensional structural diagram of the expansion clamping head according to an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional three-dimensional structural diagram of the internal structure of the expansion clamp according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the internal cross-sectional plane structure of the expansion clamping head according to an embodiment of the present utility model.

[0019] In the diagram: 1. Chuck end seat; 2. Chuck housing; 3. Expansion block; 4. Inner piston; 5. Expansion push plate; 6. Expansion wedge; 7. Elastic ring; 8. Return spring; 9. Inflation connector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a disc-type pneumatic expansion clamp, including a clamp end seat 1. A clamp shell 2 is fixedly installed on the outer surface of the clamp end seat 1. The interior of the clamp shell 2 is a hollow structure design. Several expansion movable blocks 3 are arranged on the outer side of the clamp shell 2. The several expansion movable blocks 3 are circumferentially distributed at equal intervals through the center point of the clamp shell 2. The expansion movable blocks 3 are slidably connected to the clamp shell 2. Thus, the expansion and contraction processing can be performed inside the clamp shell 2 by means of the expansion movable blocks 3. That is, when the expansion movable blocks 3 are extended, the clamp of this utility model is in an expanded state, and when the expansion movable blocks 3 are retracted, the clamp is in a normal state.

[0024] Specifically, to provide a corresponding tensioning drive structure for the tensioning movable block 3, please refer to the appendix of the instruction manual. Figure 3 as well as Figure 4 As shown, an inner piston 4 is slidably installed inside the chuck end seat 1. An expansion push plate 5 is fixedly sleeved on the bottom end of the inner piston 4. Several expansion wedges 6 adapted to the expansion movable block 3 are fixedly installed on the outer surface of the expansion push plate 5.

[0025] Furthermore, the number of tightening wedges 6 and tightening movable blocks 3 are the same, and their positions correspond one-to-one. The tightening wedges 6 and tightening movable blocks 3 are in contact with each other, and the contact surface between the tightening wedges and the tightening movable blocks 3 is an inclined surface.

[0026] To explain the expansion drive process of this structural design, please refer to the appendix of the instruction manual. Figure 3 As shown, when the inner piston 4 moves from left to right, the inner piston 4 can simultaneously drive the expansion push plate 5 to move to the right. During the process of the expansion push plate 5 moving to the right, the expansion wedge 6 on its outer side can abut against the expansion movable block 3 at the upper end. Due to the abutting action of the inclined wedge, the expansion movable block 3 can move to the outside of the chuck housing 2. At this time, the expansion movable block 3 extends out from the chuck housing 2. That is, the expansion movable block 3 can be expanded and extended by the abutting action of the expansion wedge 6, so that the expansion chuck of this utility model is in a tightened state.

[0027] In this embodiment, in order to reset the inner piston 4 and the expansion push plate 5, a number of reset springs 8 are fixedly installed on the outer surface of the expansion push plate 5 away from the inner piston 4. The number of reset springs 8 are distributed circumferentially at equal intervals through the center point of the expansion push plate 5.

[0028] With this structural design, when the tensioning push plate 5 moves from left to right, it can compress the external return spring 8, so that the return spring 8 is in a compressed state. When the external tensioning driving force disappears, the compressed return spring 8 can perform elastic reset. In this way, the elastic reset of the return spring 8 can drive the tensioning push plate 5 and the inner piston 4 to move from right to left to reset, ensuring the reset effect of the internal piston drive structure.

[0029] In this embodiment, in order to tighten and reset the expansion movable block 3, a groove is provided on the outer surface of each expansion movable block 3, and an elastic ring 7 is provided between the grooves of several expansion movable blocks 3. The elastic ring 7 can be a rubber elastic ring. With this structural design, the expansion movable block 3 can be tightened by the elastic ring 7 to prevent the expansion movable block 3 from falling out of the clamp housing 2.

[0030] Simultaneously, when the tensioning movable block 3 extends and tightens, several tensioning movable blocks 3 can open the outer elastic ring 7. When the inner piston structure elastically resets from right to left under the driving action of the reset spring 8, after the tensioning movable block 3 is no longer resisted by the tensioning wedge 6, its opened elastic ring 7 tightens inward, thereby driving several tensioning movable blocks 3 to tighten and reset inward, completing the reset process of the tensioning movable block 3.

[0031] In this embodiment, in order to provide the driving force for tightening, an air inflator 9 is fixedly installed at the center of the outer surface of the chuck end seat 1. High-pressure air can be introduced through the air inflator 9, thereby driving the inner piston 4 to move from left to right. In actual use, it has the practical characteristics of pneumatic tightening.

[0032] Working principle: In use, the disc-type pneumatic expansion clamp of this utility model allows high-pressure air to be introduced through the inflation connector 9. This high-pressure air drives the inner piston 4 to move from left to right. See the attached instruction manual for details. Figure 3 As shown, when the inner piston 4 moves from left to right, the inner piston 4 can simultaneously drive the expansion push plate 5 to move to the right. During the movement of the expansion push plate 5 to the right, the expansion wedge 6 on its outer side can abut against the expansion movable block 3 at the upper end. Due to the abutting action of the inclined wedge, the expansion movable block 3 can move to the outside of the chuck housing 2. At this time, the expansion movable block 3 extends out from the chuck housing 2. That is, the expansion movable block 3 can be expanded and extended by the abutting action of the expansion wedge 6, so that the expansion chuck of this utility model is in a tightened state, ensuring the normal use effect in the tightened state.

[0033] During the movement of the tensioning push plate 5 from left to right, it can compress the external return spring 8, so that the return spring 8 is in a compressed state. When the external high-pressure air stops, the air driving force disappears, and the compressed return spring 8 can perform elastic reset. In this way, the elastic reset of the return spring 8 can drive the tensioning push plate 5 and the inner piston 4 to move from right to left to reset, ensuring the reset effect of the internal piston drive structure.

[0034] Simultaneously, when the tensioning movable block 3 extends and tightens, several tensioning movable blocks 3 can open the outer elastic ring 7. When the inner piston structure elastically resets from right to left under the driving action of the reset spring 8, after the tensioning movable block 3 is no longer resisted by the tensioning wedge 6, its opened elastic ring 7 tightens inward, thereby driving several tensioning movable blocks 3 to tighten and reset inward, completing the reset process of the tensioning movable block 3.

[0035] By using the reset spring 8 and the elastic ring 7, the internal piston structure and the tensioning moving block 3 can be reset, ensuring the normal operation of the next tensioning operation.

[0036] The disc-type pneumatic expansion clamp of this utility model can drive the internal piston 4 and expansion push plate 5 to move by introducing high-pressure air into the air inlet 9. The movement of the internal piston drive structure can drive the expansion movable block 3 to extend and expand, thereby ensuring the normal expansion effect of the expansion clamp of this utility model.

[0037] As can be seen from the above, the internal drive structure of the expansion chuck of this utility model consists of only a simple internal piston 4 and an expansion push plate 5. This utility model effectively simplifies and optimizes the internal structure of the existing expansion chuck, thereby effectively reducing the complexity of the internal structure of the expansion chuck and achieving a better effect of simplified structure and use. By reducing the number of parts, it can effectively avoid the problem of frequent damage caused by too many internal parts, improve the overall service life, and also effectively reduce the manufacturing difficulty and maintenance cost of the expansion chuck. It has good economic practicality, and the overall structure is simpler and more convenient to use, with stronger practicality and suitable for implementation.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A disc-type pneumatic expansion chuck, comprising a chuck end seat (1), characterized in that, A chuck shell (2) is fixedly installed on the outer surface of the chuck end seat (1). The interior of the chuck shell (2) is a hollow structure. Several expansion movable blocks (3) are provided on the outer side of the chuck shell (2). The several expansion movable blocks (3) are circumferentially distributed at equal intervals through the center point of the chuck shell (2). The expansion movable blocks (3) are slidably connected to the chuck shell (2). An inner piston (4) is slidably installed inside the chuck end seat (1). An expansion push plate (5) is fixedly sleeved on the bottom end of the inner piston (4). Several expansion wedges (6) adapted to the expansion movable blocks (3) are fixedly installed on the outer surface of the expansion push plate (5).

2. The disc-type pneumatic expansion clamping head according to claim 1, characterized in that: The number of the tightening wedges (6) and the tightening movable blocks (3) are the same, and their positions correspond one-to-one.

3. The disc-type pneumatic expansion clamping head according to claim 1, characterized in that: The tightening wedge (6) and the tightening movable block (3) are in contact with each other, and the contact surface between the tightening wedge and the tightening movable block (3) is an inclined surface.

4. A disc-type pneumatic expansion clamping head according to claim 1, characterized in that: A number of return springs (8) are fixedly installed on the outer surface of the end of the tensioning push plate (5) away from the inner piston (4). The return springs (8) are distributed circumferentially at equal intervals through the center point of the tensioning push plate (5).

5. A disc-type pneumatic expansion clamping head according to claim 1, characterized in that: An air inflator (9) is fixedly installed at the center of the outer surface of the clamp end seat (1).

6. A disc-type pneumatic expansion clamping head according to claim 1, characterized in that: Each of the expansion movable blocks (3) has a groove on its outer surface, and an elastic ring (7) is fitted between the grooves of several expansion movable blocks (3).

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