Pneumatic clamping structure

Abstract

The utility model discloses a pneumatic clamping structure, which relates to the technical field of cutter clamping, and comprises a bottom plate, the front end and the rear end of the top of the bottom plate are respectively provided with an inclined surface, the top of the bottom plate is provided with four first fixing holes, and the first fixing holes are distributed at four corners of the top of the bottom plate. A triangular supporting plate is fixedly connected to the center of the top of the bottom plate, the clamping mechanism comprises air cylinders fixedly connected to the top of the triangular supporting plate, the air cylinders are distributed at the top triangles of the triangular supporting plate, second fixing holes are formed in the periphery of the top of each air cylinder, and a first circular groove is formed in the center of the top of each air cylinder; by adopting the clamping mechanism, radial pressure can be provided, a self-centering function is realized, and a pneumatic pressing plate presses an end face, so that quick clamping during high-speed cutting machining of a precision part is realized, the product quality is guaranteed, and indentation and deformation caused by a tool clamp are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool clamping, in particular to a pneumatic clamping structure. Background Art

[0002] When cutting ring parts, the clamping method mostly used for ring parts is three-jaw chuck. As a general tooling, three-jaw chuck can adapt to all parts with circular or arc features as the main body. However, the existing three-jaw chuck clamping is prone to leaving indentations on the parts when clamping them, and thin-walled parts may be out of round and deformed. The pressure of the three-jaw chuck mainly acts in the radial direction, and no pressure is applied in the axial direction. For parts with end jump requirements, the three-jaw chuck cannot meet their technical requirements, so we propose a pneumatic clamping structure. Utility Model Content

[0003] The purpose of the utility model is to provide a pneumatic clamping structure, which can provide radial pressure by adopting a clamping mechanism to realize the self-centering function. The clamping method of the pneumatic pressure plate pressing the end face realizes the rapid clamping of precision parts during high-speed cutting, and solves the existing three-jaw chuck clamping, which easily leaves indentations on parts when clamping them, and thin-walled parts will also have the problem of out-of-roundness and deformation.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a pneumatic clamping structure, comprising a base plate, wherein the front end and the rear end of the top of the base plate are both provided with inclined surfaces, the top of the base plate is provided with a first fixing hole, the number of the first fixing holes is four, and the first fixing holes are distributed at the four corners of the top of the base plate, a triangular support plate is fixedly connected at the center of the top of the base plate, and also includes a clamping mechanism, wherein the clamping mechanism includes a cylinder fixedly connected to the top of the triangular support plate, the cylinder is distributed in the triangle at the top of the triangular support plate, second fixing holes are provided around the top of the cylinder, and a first circular groove is provided at the center of the top of the cylinder.

[0006] Furthermore, a limiting ring is fixedly connected to the bottom of the first circular groove, a push rod is slidably connected to the inner wall of the cylinder, the push rod passes through the top of the cylinder and extends to the top of the limiting ring, and an arc plate is fixedly connected to the top of the push rod.

[0007] Furthermore, a fixed block is fixedly connected to one end of the top of the cylinder near the center of the triangular support plate, an extension block is fixedly connected to the center of the top of the fixed block, and rotating plates are rotatably connected to both sides of the extension block.

[0008] Furthermore, a slope block is rotatably connected to one side of the top of the rotating plate that is close to each other, and a rectangular groove is provided at the bottom of the slope block on one side away from the center of the triangular support plate.

[0009] Furthermore, the inner wall of the rectangular groove is rotatably connected to both sides of the arc plate, a fixing ring is fixedly connected to the bottom center of the bottom of the bottom plate, and a cushion is fixedly connected to the bottom of one side of the inclined block near the center of the triangular support plate.

[0010] Furthermore, an internal expansion mechanism is provided at the center of the top of the triangular support plate, and the internal expansion mechanism includes a second circular groove opened at the rear end and right side of the top of the base plate, and a ventilation pipe is connected and fixed to the inner walls of the two second circular grooves, and air injection holes are opened on the right side and the rear end of the right side of the back side of the base plate.

[0011] Furthermore, the outer walls of one end of the two ventilation pipes close to the second circular groove are rotatably connected with a torsion ring, and the center of the top of the triangular support plate is fixedly connected with an air bin, and an air suction hole is opened on the top of the air bin.

[0012] Furthermore, the number of the air intake holes is several, an extrusion block is slidably connected to the center of the top of the air bin, and an air outlet hole is opened at the bottom end of the outer wall of the air bin, and the number of the air outlet holes is three.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model adopts a clamping mechanism to provide radial pressure and realize the self-centering function. The pneumatic pressure plate clamps the end face to achieve fast clamping during high-speed cutting of precision parts, ensure product quality, and reduce indentations and deformations caused by fixtures.

[0015] 2. The utility model is provided with an internal expansion mechanism. The base is the working platform of the entire mechanism. The calibration and positioning of the tooling benchmark are completed on the base. The rounded surfaces at both ends of the base make chip removal smoother and less prone to accumulation. The air path bracket facilitates the rapid disassembly and maintenance of the air pipe. The tooling system is arranged with coolant pipes and air source pipes, which can clean up residual chips in a timely and multi-angle manner. The pneumatic device provides axial pressure, and the pressure is controlled through early debugging to protect the parts without leaving indentations.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1This is a structural schematic diagram of a pneumatic clamping structure of the utility model;

[0019] Figure 2 This is a rear view structural diagram of the utility model;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0021] Figure 4 It is an enlarged schematic diagram of the clamping mechanism of the utility model;

[0022] Figure 5 It is a schematic diagram of the overall structure of the internal expansion mechanism of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Bottom plate; 2. Inclined surface; 3. First fixing hole; 4. Triangular support plate; 5. Clamping mechanism; 501. Cylinder; 502. Second fixing hole; 503. First circular groove; 504. Limiting ring; 505. Push rod; 506. Arc plate; 507. Fixed block; 508. Third fixing hole; 509. Extension block; 510. Rotating plate; 511. Inclined surface block; 512. Rectangular groove; 513. Fixed ring; 514. Cushion; 6. Internal expansion mechanism; 601. Second circular groove; 602. Ventilation pipe; 603. Air injection hole; 604. Twist ring; 605. Air chamber; 606. Air suction hole; 607. Extrusion block; 608. Air outlet hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 As shown, the utility model is a pneumatic clamping structure, including a bottom plate 1, the top front end and the rear end of the bottom plate 1 are both provided with inclined surfaces 2, the top of the bottom plate 1 is provided with first fixing holes 3, the number of the first fixing holes 3 is four, and the first fixing holes 3 are distributed at the four corners of the top of the bottom plate 1, and a triangular support plate 4 is fixedly connected at the center of the top of the bottom plate 1, and also includes;

[0027] The clamping mechanism 5 includes a cylinder 501 fixedly connected to the top of the triangular support plate 4. The cylinder 501 is distributed in the triangle at the top of the triangular support plate 4. A second fixing hole 502 is opened around the top of the cylinder 501, and a first circular groove 503 is opened at the center of the top of the cylinder 501.

[0028] A limiting ring 504 is fixedly connected to the bottom of the first circular groove 503 , a push rod 505 is slidably connected to the inner wall of the cylinder 501 , the push rod 505 passes through the top of the cylinder 501 and extends to the top of the limiting ring 504 , and an arc plate 506 is fixedly connected to the top of the push rod 505 .

[0029] A fixed block 507 is fixedly connected to one end of the top of the cylinder 501 near the center of the triangular support plate 4, an extension block 509 is fixedly connected to the center of the top of the fixed block 507, and rotating plates 510 are rotatably connected to both sides of the extension block 509.

[0030] The top of the rotating plate 510 is rotatably connected to one side thereof, and a bevel block 511 is rotatably connected to one side thereof. A rectangular groove 512 is formed at the bottom of the bevel block 511 away from the center of the triangular support plate 4 .

[0031] The inner wall of the rectangular groove 512 is rotatably connected to both sides of the arc plate 506 , a fixing ring 513 is fixedly connected to the bottom center of the bottom plate 1 , and a cushion 514 is fixedly connected to the bottom of one side of the inclined block 511 near the center of the triangular support plate 4 .

[0032] An internal expansion mechanism 6 is arranged at the top center of the triangular support plate 4, and the internal expansion mechanism 6 includes a second circular groove 601 opened at the rear end and right side of the top of the base plate 1, and the inner walls of the two second circular grooves 601 are connected and fixed with a ventilation pipe 602, and air injection holes 603 are opened on the right side and the rear end of the right side of the back side of the base plate 1.

[0033] The outer wall of one end of the two ventilation pipes 602 close to the second circular groove 601 is rotatably connected with a torsion ring 604, and the top center of the triangular support plate 4 is fixedly connected with an air chamber 605, and the top of the air chamber 605 is provided with an air suction hole 606.

[0034] There are several air suction holes 606 , and an extrusion block 607 is slidably connected to the center of the top of the air bin 605 . An air outlet hole 608 is provided at the bottom end of the outer wall of the air bin 605 , and there are three air outlet holes 608 .

[0035] A specific application of this embodiment is: by setting up the clamping mechanism 5, the cylinder 501 is started to push the push rod 505 to rise and fall, and the push rod 505 pushes one side of the inclined surface block 511 to rise. At this time, the rotating plate 510 limits the central axis of the inclined surface block 511, so that the other side of the inclined surface block 511 is lowered, and the soft pad 514 on one side of the inclined surface block 511 is lowered to clamp the parts, thereby preventing the indentation and deformation problems of the three-jaw chuck clamping. By adjusting the pressure size for control, rapid clamping of precision parts during high-speed cutting can be achieved, thereby improving the practicality of the device.

[0036] By setting up the internal expansion mechanism 6 and injecting gas into the gas injection hole 603, the gas enters the ventilation pipe 602, so that the parts on the surface of the gas bin 605 are blown inward, so that the residual chips of the processed parts are blown off, and at the same time, the air pipe inside the bottom plate 1 sucks air into the gas bin 605, so that the gas bin 605 has a negative pressure, and the negative pressure is sucked out from the gas outlet 608, so that the inside of the parts on the surface of the gas bin 605 are adsorbed, so that the processed parts are stabilized in the gas bin 605.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pneumatic clamping structure, comprising a base plate (1), wherein the front end and the rear end of the top of the base plate (1) are both provided with inclined surfaces (2), the top of the base plate (1) is provided with first fixing holes (3), the number of the first fixing holes (3) is four, and the first fixing holes (3) are distributed at the four corners of the top of the base plate (1), and a triangular support plate (4) is fixedly connected at the center of the top of the base plate (1), characterized in that: Also includes; A clamping mechanism (5), the clamping mechanism (5) comprising a cylinder (501) fixedly connected to the top of the triangular support plate (4), the cylinder (501) being distributed in a triangle at the top of the triangular support plate (4), second fixing holes (502) being provided around the top of the cylinder (501), and a first circular groove (503) being provided at the center of the top of the cylinder (501).

2. A pneumatic clamping structure according to claim 1, characterized in that: The bottom of the first circular groove (503) is fixedly connected to a limit ring (504), the inner wall of the cylinder (501) is slidably connected to a push rod (505), the push rod (505) passes through the top of the cylinder (501) and extends to the top of the limit ring (504), and the top of the push rod (505) is fixedly connected to an arc plate (506).

3. A pneumatic clamping structure according to claim 2, characterized in that: A fixed block (507) is fixedly connected to one end of the top of the cylinder (501) near the center of the triangular support plate (4), an extension block (509) is fixedly connected to the center of the top of the fixed block (507), and rotating plates (510) are rotatably connected to both sides of the extension block (509).

4. A pneumatic clamping structure according to claim 3, characterized in that: The top ends of the two rotating plates (510) are rotatably connected to a side where they are close to each other, and a rectangular groove (512) is formed at the bottom of the side of the inclined surface block (511) away from the center of the triangular support plate (4).

5. A pneumatic clamping structure according to claim 4, characterized in that: The inner wall of the rectangular groove (512) is rotatably connected to both sides of the arc plate (506); a fixing ring (513) is fixedly connected to the center of the bottom of the bottom plate (1); and a soft pad (514) is fixedly connected to the bottom of one side of the inclined surface block (511) near the center of the triangular support plate (4).

6. A pneumatic clamping structure according to claim 5, characterized in that: An internal expansion mechanism (6) is provided at the center of the top of the triangular support plate (4), and the internal expansion mechanism (6) comprises a second circular groove (601) opened at the rear end and right side of the top of the bottom plate (1), a vent pipe (602) is connected and fixed to the inner walls of the two second circular grooves (601), and air injection holes (603) are opened on the right side and the rear end of the right side of the back of the bottom plate (1).

7. A pneumatic clamping structure according to claim 6, characterized in that: The outer walls of one end of the two ventilation pipes (602) close to the second circular groove (601) are rotatably connected to a torsion ring (604), and the top center of the triangular support plate (4) is fixedly connected to an air bin (605), and the top of the air bin (605) is provided with an air suction hole (606).

8. The pneumatic clamping structure according to claim 7, characterized in that: The number of the air suction holes (606) is several, and a squeezing block (607) is slidably connected to the center of the top of the air bin (605). An air outlet hole (608) is opened at the bottom end of the outer wall of the air bin (605), and the number of the air outlet holes (608) is three.

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