A push-up type air cylinder using a collet

Abstract

The utility model discloses a kind of push-up type use chuck's air cylinder, it is related to chuck air cylinder technical field, including cylinder body, chuck of clamping shaft type workpiece is sleeved in the cylinder body, the outer wall of chuck is sleeved with the cylinder barrel seat fixed in the inside of cylinder body.The utility model transports gas in cylinder body by outside air pump, makes push sleeve upwardly rise (clamping) or downwardly lower (loosen), chuck realizes the purpose of clamping to workpiece or material, so that its clamping force is stable, because the position of chuck is fixed, the action of chuck is only clamping or loosening, to ensure that each time mounting position is consistent, and then improve the machining efficiency of workpiece, while the chuck in the inside can be conveniently taken out and replaced corresponding specification use, to reduce use cost, and different push sleeve can be used, replace different forms of standard chuck (for example ER chuck, BT chuck, numerical control lathe chuck and diversification), so that the chuck air cylinder can realize diversification, complex material clamping.

Description

Technical Field

[0001] This utility model relates to the field of chuck cylinder technology, specifically a push-up type cylinder using a standard chuck. Background Technology

[0002] Chuck cylinders are a commonly used clamping and transfer device in workpiece production. Using chuck cylinders to clamp and transfer workpieces helps to fully ensure workpiece production efficiency. They are mainly used for cutting the inner and outer cylindrical surfaces, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other operations. CNC machine tools automatically process the workpieces according to a pre-programmed machining program.

[0003] However, existing chuck cylinders still have the following drawbacks:

[0004] 1. Existing CNC chucks require frequent replacement and installation. Generally, disassembling CNC chucks is very troublesome, and the stability of the CNC chuck during installation cannot be guaranteed, making them quite inconvenient to use.

[0005] 2. Existing traditional CNC chucks either have complex structures that are difficult to disassemble and install, or simple structures that do not provide a firm and stable grip on the drill bit. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a cylinder with an upward-pushing chuck to solve the technical problems mentioned in the background.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cylinder with an upward-pushing chuck, comprising a cylinder body, a chuck for clamping shaft-like workpieces is sleeved inside the cylinder body, a cylinder seat fixed inside the cylinder body is sleeved on the outer wall of the chuck, an inner cylinder is sleeved on the outer wall of the cylinder seat and fits against the curved outer wall of the chuck, and the upper and lower parts of the chuck extend to the outside of the cylinder body.

[0008] As a preferred technical solution, the outer curved wall of the cylinder seat is provided with a first annular groove, and the first annular groove and the inner wall of the cylinder form a first annular cavity.

[0009] As a preferred technical solution, the outer wall of the cylinder is provided with a first pipe joint that communicates with the first annular cavity, and the first pipe joint is connected to an external air source by means of a flexible hose.

[0010] As a preferred technical solution, the curved outer wall of the inner cylinder is provided with a second annular groove, and the second annular groove and the inner wall of the cylinder form a second annular cavity.

[0011] As a preferred technical solution, the outer wall of the cylinder is provided with a second pipe joint that communicates with the second annular cavity, and the second pipe joint is connected to an external air source by a flexible hose.

[0012] As a preferred technical solution, the inner cylinder is provided with an outer conical groove near the top, the inclined surface of the outer conical groove abuts against the outer conical surface of the contact part, and the inner and outer walls of the inner cylinder are equipped with three sets of sealing rings, the inner cylinder in contact with the sealing rings is provided with a matching sealing ring.

[0013] As a preferred technical solution, the inner wall of the cylinder seat is provided with a circular hole, and a positioning pin is placed in the circular hole. The outer wall of the chuck is provided with a constraint groove that matches the positioning pin, and the constraint groove is opened along the axial direction of the chuck.

[0014] As a preferred technical solution, bolt holes are provided on the end face of the cylinder at the external corner.

[0015] In summary, the present invention has the following main advantages:

[0016] This invention uses an external air pump to deliver gas into the cylinder, causing the push sleeve to rise (clamp) or fall (release). The chuck clamps the workpiece or material, stabilizing the clamping force. Because the chuck's position is fixed, its movement is simply clamping or releasing, ensuring consistent clamping positions each time and improving workpiece processing efficiency. Furthermore, the internal chuck can be easily removed and replaced with the appropriate specifications, reducing operating costs. Different push sleeves can be used to replace different types of standard chucks (e.g., ER chucks, BT chucks, CNC lathe chucks, etc.), enabling the chuck cylinder to handle diverse and complex material clamping applications. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the chuck cylinder of this utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamp of this utility model;

[0019] Figure 3 This is a cross-sectional view of the chuck of this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the cylinder body, inner cylinder barrel, and cylinder barrel seat of this utility model.

[0021] Figure 5 This is a cross-sectional plan view of the cylinder body of this utility model.

[0022] In the diagram: 100, cylinder block; 110, bolt hole; 120, inner cylinder barrel; 121, outer conical groove; 122, sealing ring; 130, chuck; 140, first pipe joint; 150, second pipe joint; 160, cylinder barrel seat; 170, first annular groove; 180, second annular groove; 190, locating pin. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] A type of cylinder that uses a chuck for pushing upwards, such as Figures 1 to 5 As shown, the device includes a cylinder body 100, a chuck 130 for clamping shaft-type workpieces is sleeved inside the cylinder body 100, a cylinder seat 160 fixed inside the cylinder body 100 is sleeved on the outer wall of the chuck 130, and an inner cylinder 120 that fits against the curved outer wall of the chuck 130 is sleeved on the outer wall of the cylinder seat 160. The upper and lower parts of the chuck 130 both extend to the outside of the cylinder body 100.

[0026] The outer curved wall of the cylinder seat 160 is provided with a first annular groove 170, and the first annular groove 170 and the inner wall of the cylinder body 100 form a first annular cavity; the outer wall of the cylinder body 100 is provided with a first pipe joint 140 that communicates with the first annular cavity, and the first pipe joint 140 is connected to an external air source by means of a flexible hose.

[0027] The inner cylinder 120 has a second annular groove 180 on its curved outer wall. The second annular groove 180 and the inner wall of the cylinder body 100 form a second annular cavity. The outer wall of the cylinder body 100 is provided with a second pipe connector 150 that communicates with the second annular cavity. The second pipe connector 150 is connected to an external air source by means of a flexible hose.

[0028] Both the outer walls of the cylinder seat 160 and the inner cylinder 120 are fitted with sealing rings that contact the inner wall of the cylinder body 100.

[0029] An external air source enters the second annular cavity through the second pipe connector 150 and exerts a vertically upward thrust on the inner cylinder 120. Since the chuck 130 is connected to the spindle of the CNC machine tool by means of the bottom external thread, the chuck 130 is in a stationary state. Its outer tapered groove 121 contacts the chuck 130 and generates a radial compressive force, causing the top of the chuck 130 to bend inward to fix the shaft. When the air source enters the first changing cavity through the first pipe connector 140 and applies a vertically downward force to the inner cylinder 120, the inner cylinder 120 is lowered and the outer tapered groove 121 no longer applies pressure to the chuck 130. It recovers by its own elasticity and no longer serves to clamp the shaft. In this way, the machined shaft can be removed.

[0030] Please refer to this carefully. Figure 4 The inner cylinder 120 has an outer conical groove 121 located near the top. The inclined surface of the outer conical groove 121 abuts against the outer conical surface of the chuck 130. The inner and outer walls of the inner cylinder 120 are equipped with three sets of sealing rings 122. The inner cylinder 120 that contacts the sealing rings 122 is equipped with a matching sealing ring.

[0031] The outer tapered groove 121 generates a radially centered force on the chuck 130, causing the chuck 130 to deform in the center and clamp the shaft-like parts.

[0032] The sealing ring 122 on the inner wall of the inner cylinder 120 eliminates the gap between the cylinder body 100 and the cylinder seat 160, so that the inner cylinder 120 can rise and fall stably and control the chuck 130 to tighten or loosen the shaft.

[0033] Please refer to this carefully. Figure 1 and Figure 4 Bolt holes 110 are provided on the end face of the cylinder block 100 at the external corner.

[0034] The cylinder body 100 can be fixed on the bed by screwing the bolt into the bolt hole 110, thereby clamping and fixing shaft-type workpieces.

[0035] Please refer to this carefully. Figure 5 The inner wall of the cylinder seat 160 is provided with a circular hole, and a positioning pin 190 is placed in the circular hole. The outer wall of the chuck 130 is provided with a constraint groove that matches the positioning pin 190, and the constraint groove is opened along the axial direction of the chuck 130.

[0036] The positioning pin 190 can be inserted into the round hole from inside the cylinder seat 160. When the chuck 130 is inserted from top to bottom, the positioning pin 190 can enter the constraint groove and play a positioning role for the chuck 130.

[0037] In use, external air enters the second annular cavity through the second pipe connector 150 and exerts a vertical upward thrust on the inner cylinder 120. Since the chuck 130 is connected to the spindle of the CNC machine tool by means of the bottom external thread, the chuck 130 is in a stationary state. Its outer conical groove 121 contacts the chuck 130 and generates radial extrusion force, causing the top of the chuck 130 to bend inward to fix the shaft. When the air source enters the first changing cavity through the first pipe connector 140 and applies a vertical downward force to the inner cylinder 120, the inner cylinder 120 is lowered and the outer conical groove 121 no longer applies pressure to the chuck 130. It recovers by its own elasticity and no longer serves the purpose of clamping the shaft. In this way, the processed shaft can be removed. The parts of this device not mentioned are the same as or can be implemented by existing technology.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A push-type cylinder using a chuck, comprising a cylinder body (100), characterized in that: The cylinder body (100) is fitted with a chuck (130) for holding shaft-type workpieces. The outer wall of the chuck (130) is fitted with a cylinder seat (160) fixed inside the cylinder body (100). The outer wall of the cylinder seat (160) is fitted with an inner cylinder (120) that fits against the curved outer wall of the chuck (130). The upper and lower parts of the chuck (130) extend to the outside of the cylinder body (100).

2. A cylinder with an upward-pushing chuck according to claim 1, characterized in that: The outer curved wall of the cylinder seat (160) is provided with a first annular groove (170), and the first annular groove (170) and the inner wall of the cylinder body (100) form a first annular cavity.

3. A cylinder with an upward-pushing chuck according to claim 1, characterized in that: The outer wall of the cylinder (100) is provided with a first pipe joint (140) that communicates with the first annular cavity. The first pipe joint (140) is connected to an external air source by a hose.

4. A push-type cylinder using a chuck according to claim 1, characterized in that: The inner cylinder (120) has a second annular groove (180) on its curved outer wall, and the second annular groove (180) and the inner wall of the cylinder (100) form a second annular cavity.

5. A cylinder with an upward-pushing chuck according to claim 1, characterized in that: The outer wall of the cylinder (100) is provided with a second pipe joint (150) that communicates with the second annular cavity, and the second pipe joint (150) is connected to an external air source by a hose.

6. A push-type cylinder using a chuck according to claim 1, characterized in that: The inner cylinder (120) has an outer conical groove (121) located near the top. The inclined surface of the outer conical groove (121) abuts against the curved outer wall of the chuck (130). The inner and outer walls of the inner cylinder (120) are equipped with three sets of sealing rings (122). The inner cylinder (120) that contacts the sealing rings (122) is equipped with a matching sealing ring.

7. A push-type cylinder using a chuck according to claim 1, characterized in that: The cylinder body (100) has bolt holes (110) at the corner of its end face.

8. A cylinder with an upward-pushing chuck according to claim 1, characterized in that: The inner wall of the cylinder seat (160) is provided with a circular hole, and a positioning pin (190) is placed in the circular hole. The outer wall of the chuck (130) is provided with a constraint groove that matches the positioning pin (190), and the constraint groove is opened along the axial direction of the chuck (130).

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