Outer wall lathing clamping jig

Abstract

The utility model relates to an outer wall lathing clamping jig which comprises a sleeve, a sliding rod is installed in the sleeve in a sliding mode, an end cover is arranged at one end of the sleeve, a plurality of supporting rods are evenly hinged to the other end of the sleeve in the axial direction at equal intervals, and pressing plates are installed at the ends, not hinged to the sleeve, of the supporting rods in a hinged mode. A first air cylinder located between the end cover and the sliding rod is arranged in the sleeve. A connecting rod is hinged to the middle position of the supporting rod, the end, away from the supporting rod, of the connecting rod is fixedly hinged to a sliding rod, a pressure sensor used for detecting the surface pressure of the pressing plate is arranged on the pressing plate, and the sliding rod can drive the connecting rod to move when being driven by a first air cylinder to slide in the sleeve; the ends, not connected with the sleeves, of the supporting rods can get close to or get away from each other in the moving process of the sliding rods, the supporting rods are controlled to stretch into the pipe parts to fix the pipe parts through the movement of the supporting rods, and due to the fact that the supporting rods are not fixed in a clamping mode, the device does not make contact with the outer walls of the pipe parts.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe processing, in particular to an outer wall lathe processing clamping fixture. Background Art

[0002] In the existing outer wall turning process, three-jaw chucks and other fixtures are needed to clamp the workpiece. In this process, the clamped part cannot be processed and needs to be disassembled and repositioned. This method greatly reduces the processing accuracy. There is also a higher-precision processing scheme in the traditional outer wall turning process. The scheme is to use a whole extra-long bar for processing and then cut it at a fixed distance. The outer wall accuracy of the bar processed in this way is also high enough, but it is not suitable for partial area correction of the processed bar and it is extremely wasteful of materials. Therefore, a clamping fixture for outer wall turning with a wide range of uses and no waste of materials is needed. Utility Model Content

[0003] The utility model aims to provide a clamping jig for outer wall lathe processing to solve the problems existing in the above-mentioned prior art.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A clamping fixture for outer wall turning comprises a sleeve, a sliding rod is slidably installed inside the sleeve, an end cover is provided at one end of the sleeve, a plurality of support rods are evenly hinged axially at the other end of the sleeve, a pressure plate is hingedly installed at the end of the support rod not hinged to the sleeve; a first cylinder is provided inside the sleeve and is located between the end cover and the sliding rod; a connecting rod is hingedly installed at the middle position of the support rod, and the end of the connecting rod away from the support rod is hingedly fixed to the sliding rod, and a pressure sensor for detecting the surface pressure of the pressure plate is provided on the pressure plate.

[0006] By adopting the above technical solution, when the sliding rod is driven by the first cylinder to slide inside the sleeve, it will drive the connecting rod to move. Because the other end of the connecting rod is the support rod, and one end of the support rod is hinged on the sleeve, the supporting rod is finally driven to rotate by the connecting rod when the sliding rod slides, and because one end of the support rod is hinged on the sleeve, the other end of the support rod will approach or move away from each other during the movement of the sliding rod. Through this movement of the support rod, the support rod is controlled to extend into the interior of the pipe part to fix the pipe part. Because it is not fixed by clamping, the device has no contact with the outer wall of the pipe part. This setting can ensure that the pipe part does not need to be disassembled during the outer wall turning process, and the outer wall can be processed as a whole at one time, ensuring the processing accuracy and processing speed.

[0007] In a further embodiment, a dovetail groove is provided on the pressure plate, a dovetail block is bolted and fixed in the dovetail groove, the dovetail block is provided with an extension end located outside the dovetail groove, and the surface of the extension end is arc-shaped.

[0008] By adopting the above technical solution and installing dovetail blocks of different sizes in the dovetail groove, different inner wall shapes can be accurately positioned and clamped, thereby improving the application scope of the device.

[0009] In a further embodiment, a sealing ring is provided between the end cover and the sleeve.

[0010] In a further embodiment, a plurality of limit grooves are evenly arranged axially on the inner wall of the sleeve, a plurality of positioning blocks are evenly arranged axially on one end of the sliding rod close to the end cover, the positioning blocks are slidably installed in the positioning grooves one by one, a limiting protrusion is arranged on the inner wall of one end of the sleeve mounting support rod, and a sealing device is arranged on the inner wall of one end of the sleeve mounting support rod.

[0011] In a further embodiment, a positioning ring is provided on the outer side of one end of the sleeve mounting support rod, and the positioning ring is in an involute shape.

[0012] In a further embodiment, the connecting rod is a pneumatic telescopic rod.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. When the sliding rod is driven by the first cylinder to slide inside the sleeve, the connecting rod will be driven to move. Because the other end of the connecting rod is a support rod, and one end of the support rod is hinged on the sleeve, the connecting rod will eventually drive the support rod to rotate when the sliding rod slides. And because one end of the support rod is hinged on the sleeve, the other end of the support rod will approach or move away from each other during the movement of the sliding rod. Through this movement of the support rod, the support rod is controlled to extend into the interior of the pipe part to fix the pipe part. Because it is not fixed by clamping, the device has no contact with the outer wall of the pipe part. This setting can ensure that the pipe part does not need to be disassembled during the turning process of the outer wall, and the outer wall can be processed as a whole at one time, ensuring the processing accuracy and processing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model in use state.

[0017] In the figure, 1, sleeve; 2, sliding rod; 3, end cover; 4, support rod; 5, pressure plate; 6, first cylinder; 7, connecting rod; 8, pressure sensor; 9, dovetail block; 10, sealing ring; 11, positioning block; 12, sealing device. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, "plurality" means two or more, unless the direction of the center is otherwise clearly and specifically defined.

[0020] Embodiment 1:

[0021] like Figure 1-2 As shown, a clamping fixture for outer wall machining comprises a sleeve 1, a slide bar 2 is slidably installed inside the sleeve 1, an end cover 3 is arranged at one end of the sleeve 1, a plurality of support rods 4 are evenly hinged axially at the other end of the sleeve 1 at equal intervals, and a pressure plate 5 is hingedly installed at the end of the support rod 4 not hinged to the sleeve 1; a first cylinder 6 is hingedly installed between the end cover 3 and the slide bar 2 inside the sleeve 1; a connecting rod 7 is hingedly installed at the middle position of the support rod 4, and the end of the connecting rod 7 away from the support rod 4 is hinged and fixed to the slide bar 2, a pressure sensor 8 for detecting the surface pressure of the pressure plate 5 is arranged on the pressure plate 5, a dovetail groove is arranged on the pressure plate 5, and a bolt in the dovetail groove A dovetail block 9 is fixed to the sleeve 1, and the dovetail block 9 is provided with an extension end located outside the dovetail groove, and the surface of the extension end is arc-shaped. A sealing ring 10 is provided between the end cover 3 and the sleeve 1, and a plurality of limit grooves are evenly arranged on the inner wall of the sleeve 1 in the axial direction, and a plurality of positioning blocks 11 are evenly arranged on the axial direction at one end of the slide rod 2 close to the end cover 3, and the positioning blocks 11 are slidably installed in the positioning grooves in a one-to-one manner. A limiting protrusion is provided on the inner wall of one end of the sleeve 1 on which the support rod 4 is installed, and a sealing device 12 is provided on the inner wall of one end of the sleeve 1 on which the support rod 4 is installed, and a positioning ring is provided on the outer side of one end of the sleeve 1 on which the support rod 4 is installed, and the positioning ring is involute-shaped, and the connecting rod 7 is a pneumatic telescopic rod.

[0022] Specific implementation process: when the sliding rod is driven by the first cylinder to slide inside the sleeve, the connecting rod will be driven to move. Because the other end of the connecting rod is the support rod, and one end of the support rod is hinged on the sleeve, the connecting rod will eventually drive the support rod to rotate when the sliding rod slides. And because one end of the support rod is hinged on the sleeve, the other end of the support rod will approach or move away from each other during the movement of the sliding rod. Through this movement of the support rod, the support rod is controlled to extend into the interior of the pipe part to fix the pipe part. Because it is not fixed by clamping, the device has no contact with the outer wall of the pipe part. This setting can ensure that the pipe parts do not need to be disassembled during the outer wall turning process, and the outer wall can be processed as a whole at one time, ensuring the processing accuracy and processing speed.

[0023] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A clamping fixture for outer wall turning, characterized in that: The invention comprises a sleeve (1), a sliding rod (2) is slidably installed inside the sleeve (1), an end cover (3) is arranged at one end of the sleeve (1), a plurality of support rods (4) are evenly hinged axially at the other end of the sleeve (1), and a pressure plate (5) is hingedly installed at the end of the support rod (4) not hinged to the sleeve (1); a first cylinder (6) is arranged inside the sleeve (1) and is located between the end cover (3) and the sliding rod (2); a connecting rod (7) is hingedly installed at the middle position of the support rod (4), and the end of the connecting rod (7) away from the support rod (4) is hingedly fixed to the sliding rod (2), and a pressure sensor (8) for detecting the surface pressure of the pressure plate (5) is arranged on the pressure plate (5).

2. The outer wall turning clamping fixture according to claim 1, characterized in that: The pressure plate (5) is provided with a dovetail groove, a dovetail block (9) is bolted and fixed in the dovetail groove, and the dovetail block (9) is provided with an extension end located outside the dovetail groove, and the surface of the extension end is arc-shaped.

3. The outer wall turning clamping fixture according to claim 1, characterized in that: A sealing ring (10) is provided between the end cover (3) and the sleeve (1).

4. The outer wall turning clamping fixture according to claim 1, characterized in that: The inner wall of the sleeve (1) is evenly provided with a plurality of limit grooves in the axial direction, and the end of the slide rod (2) close to the end cover (3) is evenly provided with a plurality of positioning blocks (11) in the axial direction. The positioning blocks (11) are slidably installed in the positioning grooves in a one-to-one correspondence. A limit protrusion is provided on the inner wall of the end of the sleeve (1) on which the support rod (4) is installed, and a sealing device (12) is provided on the inner wall of the end of the sleeve (1) on which the support rod (4) is installed.

5. The outer wall turning clamping fixture according to claim 1, characterized in that: A positioning ring is arranged on the outer side of one end of the sleeve (1) for mounting the support rod (4), and the positioning ring is in an involute shape.

6. The outer wall turning clamping fixture according to claim 1, characterized in that: The connecting rod (7) is a pneumatic telescopic rod.

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