Push-up type air cylinder using chuck

Abstract

The invention discloses a push-up type air cylinder using a chuck, and relates to the technical field of chuck air cylinders, the push-up type air cylinder comprises a cylinder body, the chuck for clamping shaft workpieces is arranged in the cylinder body in a sleeved mode, and a cylinder barrel base fixed in the cylinder body is connected to the outer wall of the chuck in a sleeved mode. Air is conveyed into the cylinder body through an external air pump, the push sleeve is made to ascend (clamp) upwards or descend (loosen) downwards, the clamping head clamps a workpiece or a material, the clamping force is stable, the position of the clamping head is fixed, the action of the clamping head is only clamping or loosing, and therefore it is guaranteed that the clamping positions are consistent every time, and the clamping efficiency is improved. Meanwhile, the internal chucks can be conveniently taken out and replaced with corresponding specifications for use, so that the use cost is reduced, different push sleeves can be used, and different forms of standard chucks (such as ER chucks, BT chucks, numerically controlled lathe chucks and the like) can be replaced, so that the chuck air cylinder can be diversified, and the machining efficiency of the chuck air cylinder is improved. And complicated material clamping is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air cylinder using standard chuck, specifically to a push-up type air cylinder using chuck. BACKGROUND

[0002] The chuck air cylinder is a kind of clamping device commonly used in production, and the chuck air cylinder using standard chuck is beneficial to fully guarantee production efficiency by realizing the clamping of workpiece, which is mainly used for the cutting machining of the inner and outer cylindrical surface of shaft parts or disc parts, the inner and outer conical surface of arbitrary taper angle, complex rotary inner and outer curved surface and cylindrical, conical thread, and can also be used for cutting, drilling, reaming, reaming and boring, etc., and numerical control machine tool is automatically machined to the machined part according to the machining program prepared in advance.

[0003] However, the existing chuck air cylinder still has the following shortcomings:

[0004] 1. The existing general chuck needs to be replaced and installed frequently when in use, and the numerical control chuck is very troublesome to disassemble, and the stability of the numerical control chuck during clamping cannot be guaranteed during installation, so it is more troublesome to use.

[0005] 2. The chuck device of the existing traditional general chuck is either complex in structure and inconvenient to disassemble and install, or simple in structure and not firm and stable in clamping workpieces.

[0006] 3. The existing chuck air cylinder is a down-drawing type clamping, and the clamping size is affected by the slight difference of the clamping workpiece size, the workpiece blank size is required to be higher, which seriously affects the cost.

[0007] 4. The existing chuck air cylinder is large in size and heavy in weight, which is three times the size of the designed air cylinder, seriously affecting the clamping number, and cannot be installed in special working places.

[0008] 5. The existing other air cylinders do not use standard parts to reduce the use cost.

[0009] Inventive patent content

[0010] Therefore, the utility model patent aims to provide a push-up type air cylinder using chuck to solve the technical problems in the above background.

[0011] To achieve the above purpose, the utility model patent provides the following technical scheme: a push-up type air cylinder using chuck, comprising a cylinder body, a chuck for clamping various workpieces is sleeved in the cylinder body, a cylinder barrel seat fixed in the cylinder body is sleeved on the outer wall of the chuck, an inner cylinder barrel adhering to the curved outer wall of the chuck is sleeved on the outer wall of the cylinder barrel seat, and the upper and lower parts of the chuck extend to the outside of the cylinder body.

[0012] Preferably, the curved outer wall of the cylinder seat is provided with a first annular groove, and the first annular groove and the inner wall of the cylinder body form a first annular cavity.

[0013] Preferably, the outer wall of the cylinder body is provided with a first pipe joint connected with the first annular cavity, and the first pipe joint is connected with an external air source by a hose.

[0014] Preferably, 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 body form a second annular cavity.

[0015] Preferably, the outer wall of the cylinder body is provided with a second pipe joint connected with the second annular cavity, and the second pipe joint is connected with an external air source by a hose.

[0016] Preferably, the inner cylinder is provided with an outer taper groove near the top, the inclined surface of the outer taper groove is in abutment with the outer taper surface of the abutting part, the inner and outer walls of the inner cylinder are all provided with three groups of sealing rings, and the inner cylinder in contact with the sealing rings is provided with a matching sealing ring.

[0017] Preferably, the curved inner wall of the cylinder seat is provided with a round hole, and a positioning pin is arranged in the round hole, the outer wall of the chuck is provided with a constraint groove matched with the positioning pin, and the constraint groove is arranged along the axis direction of the chuck.

[0018] Preferably, the end face of the cylinder body is provided with a bolt hole at a position of a male angle.

[0019] In summary, the present application mainly has the following beneficial effects:

[0020] The present application uses an external air pump to transport gas in the cylinder body, so that the push sleeve is raised (clamped) or lowered (released), the chuck clamps the workpiece or material, the clamping force is stable, the position of the chuck is fixed, the chuck only clamps or releases, the clamping position is consistent every time, the machining efficiency of the workpiece is improved, the chuck can be conveniently taken out and replaced with a corresponding specification, the use cost is reduced, different push sleeves can be used, different standard chucks (such as ER chucks, BT chucks, numerical control lathe chucks, etc.) can be replaced, the chuck air cylinder can realize diversification and complication of material clamping. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure diagram of the chuck air cylinder of the present application;

[0022] Figure 2 It is a three-dimensional structure diagram of the chuck of the present application;

[0023] Figure 3This is a cross-sectional view of the chuck of this invention patent;

[0024] Figure 4 This is a cross-sectional schematic diagram of the cylinder block, inner cylinder barrel, and cylinder barrel seat of this invention patent.

[0025] Figure 5 This is a cross-sectional plan view of the cylinder block of this invention.

[0026] 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

[0027] The technical solutions of the embodiments 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.

[0028] The embodiments of the present invention will now be described based on its overall structure.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The air source from outside enters the second cavity through the second pipe joint 150, and generates a vertical upward thrust on the inner cylinder 120. Since the chuck 130 is connected to the spindle of the numerical control machine tool through the bottom external thread, the chuck 130 is in a static state. The outer taper groove 121 of the chuck 130 is in contact with the chuck 130 and generates a radial extrusion force, so that the top of the chuck 130 bends to the middle to fix the shaft workpiece. When the air source enters the first cavity through the first pipe joint 140, a vertical downward force is applied to the inner cylinder 120, so that the inner cylinder 120 is lowered and the outer taper groove 121 no longer applies pressure to the chuck 130. The chuck 130 restores itself by relying on its elasticity, and no longer clamps the shaft workpiece. In this way, the processed shaft workpiece can be removed.

[0034] Please refer to Figure 4 , the inner cylinder 120 is provided with an outer taper groove 121 near the top. The inclined surface of the outer taper groove 121 abuts against the outer taper surface of the chuck 130. The inner and outer walls of the inner cylinder 120 are both provided with three sets of sealing rings 122. The inner cylinder 120 is in contact with the sealing rings 122, which are provided with matching sealing rings.

[0035] The outer taper groove 121 generates a radial force on the chuck 130, so that the chuck 130 is deformed in the radial direction to clamp the shaft workpiece.

[0036] The sealing rings 122 on the inner wall of the inner cylinder 120 eliminate the gap between the cylinder body 100 and the cylinder seat 160, so that the inner cylinder 120 stably rises and falls, and the chuck 130 clamps or releases the shaft workpiece.

[0037] Please refer to Figure 1 and Figure 4 , the end face of the cylinder body 100 is provided with a bolt hole 110 at the position of the external corner.

[0038] The cylinder body 100 can be fixed on the bed by screwing the bolt into the bolt hole 110, so that the shaft workpiece can be clamped and fixed.

[0039] Please refer to Figure 5 , the curved inner wall of the cylinder seat 160 is provided with a round hole, and the round hole is provided with a positioning pin 190. The outer wall of the chuck 130 is provided with a constraint groove matching the positioning pin 190, and the constraint groove is provided along the axis direction of the chuck 130.

[0040] The positioning pin 190 can be placed into the round hole from the inside of the cylinder seat 160. When the chuck 130 is inserted from top to bottom, the positioning pin 190 can enter the constraint groove to position the chuck 130.

[0041] In use, the outside air source enters the second cavity through the second pipe joint 150, and exerts a vertical upward force on the inner cylinder 120. Since the chuck 130 is connected to the spindle of the numerical control machine tool by the bottom external thread, the chuck 130 is in a stationary state. The outer taper groove 121 contacts the chuck 130 and exerts a radial extrusion force, so that the top of the chuck 130 bends to the middle to fix the shaft part. When the air source enters the first cavity through the first pipe joint 140, a vertical downward force is exerted on the inner cylinder 120, so that the inner cylinder 120 is lowered and the outer taper groove 121 no longer exerts a pressure on the chuck 130. The chuck 130 restores by its own elasticity, and no longer clamps the shaft part. Thus, the processed shaft part can be removed. The parts not involved in the device are the same as the prior art or can be realized by the prior art.

[0042] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the present application. The specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, as long as they are within the scope of the claims of the present application.

Claims

1. A push to use collet cylinder comprising a cylinder body (100) characterized by: The cylinder (100) is sleeved with a chuck (130) for clamping workpieces, the positioning sleeve of the chuck (130) is sleeved with a cylinder seat (160) fixed to the inside of the cylinder (100), the outer wall of the cylinder seat (160) is sleeved with an inner cylinder (120) abutting the tapered outer wall of the chuck (130), and the upper and lower parts of the chuck (130) extend to the outside of the cylinder (100).

2. A push-up style air cylinder with a use collet according to claim 1, characterized in that: The curved outer 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 (100) form a first annular air cavity.

3. A push-up style air cylinder with a use collet according to claim 1, wherein: The outer wall of the cylinder (100) is provided with a first pipe joint (140) connected with the first annular cavity, and the first pipe joint (140) is connected with the external air source by a hose.

4. The push-to-use collet chuck cylinder of claim 1, wherein: The curved outer wall of the inner cylinder (120) is provided with a second annular groove (180), and the second annular groove (180) and the inner wall of the cylinder (100) form a second annular cavity.

5. A push-up style service collet cylinder according to claim 1, wherein: The outer wall of the cylinder (100) is provided with a second pipe joint (150) connected with the second annular cavity, and the second pipe joint (150) is connected with the external air source by a hose.

6. A push-up style service collet cylinder according to claim 1, wherein: The inner cylinder (120) is provided with an outer taper surface (121) near the top position, the inclined surface of the outer taper surface (121) abuts the tapered outer wall of the chuck (130), the inner and outer walls of the inner cylinder (120) are all equipped with three groups of sealing rings (122), and the inner cylinder (120) in contact with the sealing rings (122) is provided with a sealing ring matched therewith.

7. A push-up style air cylinder with a use collet according to claim 1, wherein: The end face of the cylinder (100) is provided with a bolt hole (110) at the position of the external corner.

8. A push-up style air cylinder with a use collet according to claim 1, wherein: The curved inner wall of the cylinder seat (160) is provided with a round hole, and the round hole is provided with a positioning pin (190), the outer wall of the chuck (130) is provided with a constraint groove matched with the positioning pin (190), and the constraint groove is provided along the axial direction of the chuck (130).

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