A clamping tool for heat treatment of ceramic cylinder liner

Abstract

The utility model discloses a kind of clamping tool for ceramic cylinder sleeve heat treatment, including fixed base plate, movable top plate and drive electric cylinder, movable top plate is located above fixed base plate, drive electric cylinder is set between movable top plate and fixed base plate;Fixed base plate top and movable top plate bottom are provided with several locating blocks, several locating blocks are evenly arranged in circular structure, locating block is oppositely arranged above and below, locating block is provided with through hole, fixed base plate and movable top plate are also provided with through hole corresponding to locating block;The tool reduces the contact area of clamping mechanism and ceramic cylinder sleeve, makes ceramic cylinder sleeve uniform contact with environment in the process of firing, reduces the probability of occurrence of structural difference.

Description

Technical Field

[0001] This utility model relates to the technical field of ceramic cylinder liner processing equipment, and in particular to a clamping fixture for heat treatment of ceramic cylinder liners. Background Technology

[0002] Ceramic cylinder liners consist of a metal outer sleeve and a ceramic inner sleeve. The metal outer sleeve is machined, while the ceramic inner sleeve is sintered. Ceramic cylinder liners are widely used components in the oil drilling industry, and their heat treatment process is crucial for improving wear resistance and service life. The heat treatment of the ceramic inner sleeve differs from that of metal cylinder liners; it refers to the high-temperature firing steps involved in the manufacturing process of the ceramic material itself. This process not only determines the physical properties of the ceramic inner sleeve but also indirectly affects its bonding strength with the metal outer sleeve. While existing clamping fixtures can provide good fixation for the ceramic inner sleeve, the clamping points can obstruct the contact between the structure and the environment, leading to slight variations in the firing effect of the ceramic inner sleeve and affecting the overall structural performance. Utility Model Content

[0003] The purpose of this invention is to provide a clamping fixture for heat treatment of ceramic cylinder liners. This fixture reduces the contact area between the clamping mechanism and the ceramic cylinder liner, so that the ceramic cylinder liner can be in uniform contact with the environment during the firing process, thereby reducing the probability of structural differences.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a clamping fixture for heat treatment of ceramic cylinder liners, comprising a fixed base plate, a movable top plate, and a drive electric cylinder. The movable top plate is located above the fixed base plate, and the drive electric cylinder is disposed between the movable top plate and the fixed base plate. A plurality of positioning blocks are provided on the top of the fixed base plate and the bottom of the movable top plate. The plurality of positioning blocks are evenly arranged in a circular structure, with the upper and lower positioning blocks being positioned opposite each other. Through holes are provided on the positioning blocks, and through holes are also provided on the fixed base plate and the movable top plate corresponding to the positioning blocks.

[0005] Optionally, a positioning groove and a limiting groove are provided at the center of the fixed base plate. The positioning groove and the limiting groove are set perpendicular to each other. The top of the positioning groove is an open structure, and the top of the limiting groove is a closed structure. A connecting channel is provided between the limiting groove and the positioning groove. A positioning hole matching the positioning groove is provided on the movable top plate.

[0006] Optionally, a buffer spring is provided between the positioning block and the movable top plate.

[0007] Optionally, there are two drive electric cylinders, which are arranged symmetrically.

[0008] Optionally, the positioning block is a frustum structure.

[0009] Optionally, a pad is provided at the bottom of the fixed base plate.

[0010] The clamping fixture for heat treatment of ceramic cylinder liners of this invention has the following advantages: (1) The electric cylinder drives the movable top plate to rise, and then the ceramic cylinder sleeve is placed on the positioning block of the fixed base plate. The electric cylinder then drives the movable top plate to fall, so that the positioning block of the movable top plate cooperates with the ceramic cylinder sleeve to complete the fixing of the ceramic cylinder sleeve. One device can place multiple ceramic cylinder sleeves at the same time, improving production efficiency. The through hole can ensure that the inner side of the ceramic cylinder sleeve is also in normal contact with the environment, ensuring that the overall structure of the ceramic cylinder sleeve is uniform, reducing the probability of local structural differences, and improving the product quality.

[0011] (2) The positioning groove and the limiting groove are used in conjunction with the handling tools to facilitate the movement of the device.

[0012] (3) The buffer spring can protect the ceramic cylinder liner and also compensate for the action error of the drive electric cylinder. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a structural diagram of a fixed base plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1-2 As shown, a clamping fixture for heat treatment of ceramic cylinder liners includes a fixed base plate 1, a movable top plate 2, and drive cylinders 3. Both the fixed base plate 1 and the movable top plate 2 are circular structures. The movable top plate 2 is located above the fixed base plate 1. Two drive cylinders 3 are symmetrically arranged between the movable top plate 2 and the fixed base plate 1. The drive cylinders 3 can drive the movable top plate 2 to rise or fall. The symmetrical arrangement of the drive cylinders 3 can make the movement of the movable top plate 2 more stable and also improve the stability of the fixture. Several positioning blocks 4 are provided on the top of the fixed base plate 1 and the bottom of the movable top plate 2. The positioning blocks 4 are frustum structures to facilitate cooperation with the ceramic cylinder liner 5. The positioning blocks 4 are evenly arranged in a circular structure, with the upper and lower positioning blocks 4 facing each other. The positioning blocks 4 are provided with through holes 6. The fixed base plate 1 and the movable top plate 2 are also provided with through holes 6 corresponding to the positioning blocks 4.

[0017] A positioning groove 7 and a limiting groove 8 are provided at the center of the fixed base plate 1. The positioning groove 7 and the limiting groove 8 are set perpendicular to each other. The top of the positioning groove 7 is an open structure, while the top of the limiting groove 8 is a closed structure. A connecting channel 9 is provided between the limiting groove 8 and the positioning groove 7. A positioning hole 10 matching the positioning groove 7 is provided on the movable top plate 2. The positioning groove 7 and the limiting groove 8 are used in conjunction with a handling tool. The positioning groove 7, the limiting groove 8, and the positioning hole 10 are all elongated structures. The connecting channel 9 is a fan-shaped structure. The handling tool is a rod-shaped structure. A connecting plate matching the positioning groove 7, the limiting groove 8, and the positioning hole 10 is provided at the bottom of the handling tool. After the connecting plate is passed through the positioning hole 10 and placed in the positioning groove 7, the connecting plate is rotated horizontally so that it enters the limiting groove 8 along the connecting channel 9. At this time, the handling tool is lifted, and the connecting plate will fit against the top of the limiting groove 8, lifting the entire device for easy handling.

[0018] The drive cylinder 3 drives the movable top plate 2 to rise, opening the tooling. Then, the ceramic cylinder sleeve 5 is placed on the positioning block 4 of the fixed base plate 1. The drive cylinder 3 then drives the movable top plate 2 to fall, so that the positioning block 4 of the movable top plate 2 mates with the top of the ceramic cylinder sleeve 5, thus fixing the ceramic cylinder sleeve 5. A buffer spring 11 is provided between the positioning block 4 and the movable top plate 2. The buffer spring 11 can compensate for the movement error of the drive cylinder 3. When the movable top plate 2 falls too far, the buffer spring 11 can prevent the movable top plate 2 from crushing the ceramic cylinder sleeve 5. When the movable top plate 2 does not fall to the correct position, the buffer spring 11 can ensure the stable engagement between the positioning block 4 and the ceramic cylinder sleeve 5.

[0019] One fixture can hold multiple ceramic cylinder liners 5 at the same time, improving production efficiency. A pad 12 is provided at the bottom of the fixed base plate 1. The pad 12 can suspend the bottom through hole 6, ensuring that the inside of the ceramic cylinder liner 5 is also in normal contact with the external environment, ensuring that the overall structure of the fired ceramic cylinder liner 5 is uniform, reducing the probability of local structural differences, and improving product quality.

[0020] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A clamping fixture for heat treatment of ceramic cylinder liners, characterized in that: It includes a fixed base plate, a movable top plate, and a drive electric cylinder. The movable top plate is located above the fixed base plate, and the drive electric cylinder is located between the movable top plate and the fixed base plate. Several positioning blocks are provided on the top of the fixed base plate and the bottom of the movable top plate. The positioning blocks are evenly arranged in a circular structure, with the upper and lower positioning blocks facing each other. The positioning blocks are provided with through holes, and the fixed base plate and the movable top plate are also provided with through holes corresponding to the positioning blocks.

2. The clamping fixture for heat treatment of ceramic cylinder liners as described in claim 1, characterized in that: The fixed base plate has a positioning groove and a limiting groove at its center. The positioning groove and the limiting groove are set perpendicular to each other. The top of the positioning groove is an open structure, and the top of the limiting groove is a closed structure. A connecting channel is provided between the limiting groove and the positioning groove. The movable top plate has positioning holes that match the positioning groove.

3. The clamping fixture for heat treatment of ceramic cylinder liners as described in claim 1, characterized in that: A buffer spring is installed between the positioning block and the movable top plate.

4. The clamping fixture for heat treatment of ceramic cylinder liners as described in claim 1, characterized in that: There are two drive electric cylinders, which are arranged symmetrically.

5. The clamping fixture for heat treatment of ceramic cylinder liners as described in claim 1, characterized in that: The positioning block has a frustum structure.

6. The clamping fixture for heat treatment of ceramic cylinder liners as described in claim 1, characterized in that: A pad is provided at the bottom of the fixed base plate.

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