Special fettling mechanism for fettling operation on side wall of graphite crucible

Abstract

The fettling mechanism special for fettling operation on the side wall of the graphite crucible comprises a fettling tool and a tool assembly frame, a tool body of the fettling tool is in a crescent shape, and a machining part and a compacting part are formed at the two ends of the fettling tool respectively; a machining blade face is formed at the tip end of the machining part, the outer end of the compaction part is in circular arc smooth transition, and abrasive ejection blocks are formed on the inner side and the outer side of the cambered surface of the compaction part respectively. The fettling cutter is assembled and connected with the cutter assembly frame through a shaft assembly structure with a built-in torsion spring in the middle position of the crescent structure; in the machining state, the attaching angle of the fettling cutter is adjusted through the cutter assembly frame, so that the machining blade face of the fettling cutter and the abrasive ejection block on the corresponding side can abut against the surface of the side wall of the crucible to be machined at the same time in the non-stress state of the torsional spring. The method has the advantages of high efficiency, accuracy, simplicity and convenience in operation and the like, and has important practical application value for improving the production efficiency and the product quality of the graphite crucible.

Description

Technical Field

[0001] The invention relates to the technical field of carbon material processing, in particular to a repairing mechanism specially used for repairing the side wall of a graphite crucible. Background Art

[0002] At present, the application range of crucibles is extremely wide, not only limited to metal smelting, but also widely used as containers for material sintering and purification. There are many types and materials of crucibles. Among them, the main component of artificial graphite crucible is carbon, which shows excellent thermal shock resistance and low thermal expansion rate, and is not easy to crack under the conditions of rapid heating and cooling; at the same time, it also has good corrosion resistance and oxidation resistance, long service life, and excellent thermal shock resistance and indirect heating performance. Therefore, it is increasingly used in the smelting or high-temperature treatment of industrial products.

[0003] In the current technical field, the processing and forming of graphite crucibles mainly adopts a variety of methods such as mechanical processing, integral pressing and isostatic pressing. Regardless of the forming technology used, the blanking operation is an indispensable key step in the production process of graphite crucibles. This process is carried out after the graphite crucible is formed. It mainly removes excess material parts through mechanical processing and polishes the surface to ensure that its shape and dimensional accuracy meet the design requirements. The blanking operation is crucial to ensure the dimensional accuracy and surface quality of the crucible, thereby ensuring that it meets the needs of subsequent use.

[0004] Since cylindrical graphite crucible is the main shape, its blanking process usually involves surface treatment of the curved surface parts on the inner and outer circular surfaces. Although graphite has excellent machining properties, its low hardness and brittle material properties cannot be ignored. At present, the processing of cylindrical graphite crucibles generally adopts traditional machining tools and methods. These tools and methods generally have problems such as low efficiency, insufficient precision, and complex operation when processing graphite crucibles. In addition, quality problems such as edge jaggedness, slag falling and corner collapse are prone to occur during the processing. Especially when processing curved surface structures, it is difficult to ensure the uniformity and consistency of the machined surface, and it is easy to have large surface roughness problems in some parts. These problems have greatly affected the production efficiency and product quality of graphite crucibles.

[0005] Therefore, it is particularly important to develop an efficient, accurate and easy-to-operate blank repairing mechanism. Summary of the invention

[0006] The technical problem solved by the present invention is to provide a repairing mechanism specially used for the side wall repairing operation of graphite crucible, which is specially used for performing efficient and accurate side repairing processing on the inner and outer side walls of cylindrical graphite crucible, and can be used to solve the defects in the above technical background.

[0007] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0008] A blank repairing mechanism specially used for the blank repairing operation of the side wall of a graphite crucible, comprising a blank repairing tool and a tool assembly frame;

[0009] The body of the blank repairing tool has a crescent-shaped outer contour, and a processing part and a compacting part are formed at both ends of the crescent-shaped outer contour, the tip of the processing part is formed with a processing blade surface, the outer end of the compacting part is a circular arc with smooth transition, and abrasive top blocks are formed on the inner side and the outer side of the arc surface of the compacting part; the abrasive top block is a circular arc top block with a convex structure;

[0010] The trimming tool is formed with an assembly part which can be assembled and connected with the tool assembly frame at the middle position of the crescent-shaped structure, and the assembly part is an axis assembly structure with a built-in torsion spring. After the assembly is completed, the trimming tool can be slightly twisted around the axis assembly structure under the condition of resisting the external force of the torsion spring;

[0011] The trimming mechanism uses the inner side surface of the trimming tool to process the outer side wall of the cylindrical graphite crucible, and uses the outer side surface of the trimming tool to process the inner side wall of the cylindrical graphite crucible; in the processing state, the trimming tool adjusts the abutment angle through the tool assembly frame so that the processing edge surface of the trimming tool and the abrasive top block on the corresponding side can simultaneously abut against the surface of the crucible side wall to be processed when the torsion spring is not under stress.

[0012] As a further limitation, the body of the trimming tool is formed of high carbon steel, and the abrasive top block and the processing blade surface are both formed of cemented carbide material.

[0013] As a further limitation, the trimming tool is a detachable structure on the tool assembly frame.

[0014] As a further limitation, the built-in torsion spring in the shaft assembly structure is a replaceable structure.

[0015] As a further limitation, the structure for adjusting the abutment angle of the trimming tool on the tool assembly frame is a ratchet pawl structure.

[0016] As a further limitation, the structure for adjusting the abutment angle of the trimming tool on the tool assembly frame is a swivel seat with a locking device.

[0017] As a further limitation, the tool assembly frame is assembled with the frame of the blank repairing equipment through a telescopic arm, and the advance and retract operations of the blank repairing tool can be realized through the feeding of the telescopic arm.

[0018] Beneficial effects: The blank repairing mechanism of the present invention, which is specially used for the blank repairing operation of the graphite crucible side wall, is designed according to the material properties of graphite and the crucible structure characteristics of the cylindrical crucible, and combines the blank repairing tool with a crescent-shaped structure and the shaft assembly structure with a built-in torsion spring to ensure that the tool can continue to closely fit the curved surface of the graphite crucible side wall during the processing;

[0019] Through the coordinated design with the tool processing part and the compacting part, the blank repairing mechanism uses the machining blade surface to repair the inner and outer walls of the graphite crucible, and uses the abrasive top block to simultaneously remove the chips and compact the surface during the blank repairing process, ensuring the uniformity and consistency of the machined surface.

[0020] This design significantly improves the efficiency and accuracy of the blank repairing operation, solves the problem of local roughness that is easily generated when traditional blank repairing equipment processes curved surfaces, effectively reduces the roughness of the processed surface, and reduces the number of repeated blank repairing operations, thereby improving the production efficiency and product quality of graphite crucibles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a preferred embodiment of the present invention when processing the outer cylindrical surface of a graphite crucible.

[0022] Figure 2 Schematic diagram of a preferred embodiment of the present invention when processing the inner surface of a graphite crucible

[0023] Among them: 1. Graphite crucible; 2. Processed blade surface; 3. Tool body; 4. Shaft assembly structure; 5. Tool assembly frame; 6. Outer abrasive top block; 7. Inner abrasive top block; 8. Arc transition part. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific illustrations and embodiments.

[0025] In the following embodiments, it will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as herein.

[0026] See also Figure 1 , Figure 2A preferred embodiment of a trimming mechanism dedicated to the trimming operation of the side wall of a graphite crucible is disclosed. In this embodiment, the trimming mechanism includes a trimming tool and a tool assembly rack 5, wherein the trimming tool is a trimming operation execution mechanism, and the outer end of the tool assembly rack 5 is assembled on a robot arm to perform trimming operations on the inner and outer surfaces of the side wall of a graphite crucible 1 placed on a turntable.

[0027] The trimming tool of this embodiment includes a tool body 3, which is a crescent-shaped structure formed of high carbon steel. The left side of the tool body 3 is a processing part, and the right side is a compacting part. The tool body 3 is formed with a processing blade face 2 at the tip of the processing part, and the outer end of the compacting part is a circular arc transition part 8 with a smooth surface. In addition, the trimming tool is formed with an inner abrasive top block 7 and an outer abrasive top block 6 on the inner and outer surfaces of the compacting part inside the circular arc transition part 8, respectively. The processing blade face 2, the outer abrasive top block 6 and the inner abrasive top block 7 are all formed of cemented carbide materials. The processing blade face 2 is used to remove excess material on the surface of the graphite crucible 1, and the compacting part compacts the trimmed surface through its outer abrasive top block 6 and inner abrasive top block 7 to ensure the smoothness and consistency of the surface.

[0028] In this embodiment, the trimming tool is formed with an axis assembly structure 4 at the middle position of the tool body 3, and the axis assembly structure is an axis assembly structure with a built-in torsion spring, and the trimming tool is assembled and connected to the tool assembly frame through the axis assembly structure 4. The torsion spring structure in the axis assembly structure 4 enables the trimming tool to be slightly twisted under the external force of the torsion spring. This design allows the trimming tool to automatically adjust the contact angle according to the curved surface of the graphite crucible 1 during the processing process, thereby achieving efficient and precise trimming of the side wall of the graphite crucible, and the poundage of the corresponding torsion spring structure can be adjusted according to the design requirements to adapt to graphite crucibles of different sizes and curvatures.

[0029] The blank repair tool is an integrally detachable structure on the tool assembly frame 5, which is convenient for repairing and replacing the blank repair tool. The tool assembly frame 5 is assembled with the frame of the blank repair equipment through a telescopic arm, and the feeding operation of the telescopic arm enables the blank repair tool to achieve precise advance and retract movements. In addition, the tool assembly frame 5 is also provided with an adjustment structure for adjusting the contact angle of the blank repair tool. The adjustment structure is also designed with a locking mechanism to ensure that the tool will not be displaced, twisted or fall off due to external forces during use. In different embodiments, the corresponding aforementioned adjustment structure is a ratchet pawl structure or a swivel seat with a locking device to ensure that the blank repair tool can fit tightly to the arc surface of the side wall of the graphite crucible during processing, thereby ensuring the stability and accuracy of the tool during processing.

[0030] In actual operation, the blank repairing mechanism first places the graphite crucible 1 on the turntable, and then drives the tool assembly frame 5 through the mechanical arm to make the blank repairing tool lean against the side wall surface of the graphite crucible 1, and then uses the adjustment structure to adjust the blank repairing tool and the side wall surface of the graphite crucible 1. Specifically:

[0031] When the outer wall of the graphite crucible 1 is being repaired, the machining edge surface 2 of the repair tool and the inner abrasive top block 7 are arranged in the shaft assembly structure 4 without the torsion spring being stressed. Figure 1 The style shown is abutted against the outer side of the graphite crucible 1;

[0032] When the inner wall of the graphite crucible 1 is being repaired, the machining edge surface 2 of the repair tool and the outer abrasive top block 6 are placed in the shaft assembly structure 4 without the torsion spring being stressed. Figure 2 The illustrated pattern is placed against the inner side of the graphite crucible 1 .

[0033] It should be noted that the graphite crucible 1 corresponding to the same size of the trimming tool used for inner wall trimming is smaller than the graphite crucible 1 corresponding to the outer wall trimming, which is determined by the size characteristics of the trimming tool and the graphite crucible 1.

[0034] In different embodiments, the trimming operations of the inner and outer side walls of the graphite crucible 1 can be performed separately or simultaneously.

[0035] During the blanking process, the graphite crucible 1 always rotates on the turntable in a clockwise direction. After the corresponding blanking tool is fed in, the machining blade surface 2 first continuously cuts the surface of the graphite crucible 1. The cut graphite crucible 1 is compacted by the corresponding outer abrasive top block 6 or inner abrasive top block 7 as the turntable rotates to ensure the flatness and uniformity of the trimmed surface, and at the same time, it can effectively remove thick cutting debris.

[0036] While the trimming tool is cutting, the robot arm controls the feed speed and depth of the tool according to a preset program to ensure the accuracy and efficiency of the trimming operation. In this way, the irregular parts of the surface of the graphite crucible 1 can be effectively removed to achieve the size and shape required by the design.

[0037] The blank repairing mechanism of the present invention not only improves the efficiency and accuracy of the blank repairing operation, but also significantly improves the production efficiency and product quality of the graphite crucible by reducing the roughness of the processed surface and the number of repeated blank repairing operations. In addition, due to the structural design and material selection of the blank repairing tool, the blank repairing mechanism has good durability and easy maintenance, further reducing the production cost.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A repairing mechanism specially used for the repairing of the side wall of a graphite crucible, characterized in that: It includes a blank repairing tool and a tool assembly stand; The body of the blank repairing tool has a crescent-shaped outer contour, and a processing part and a compacting part are formed at both ends of the crescent-shaped outer contour, the tip of the processing part is formed with a processing blade surface, the outer end of the compacting part is a circular arc with smooth transition, and abrasive top blocks are formed on the inner side and the outer side of the arc surface of the compacting part; the abrasive top block is a circular arc top block with a convex structure; The trimming tool is formed with an assembly part which can be assembled and connected with the tool assembly frame at the middle position of the crescent-shaped structure, and the assembly part is an axis assembly structure with a built-in torsion spring. After the assembly is completed, the trimming tool can be slightly twisted around the axis assembly structure under the condition of resisting the external force of the torsion spring; The trimming mechanism uses the inner side surface of the trimming tool to process the outer side wall of the cylindrical graphite crucible, and uses the outer side surface of the trimming tool to process the inner side wall of the cylindrical graphite crucible; in the processing state, the trimming tool adjusts the abutment angle through the tool assembly frame so that the processing edge surface of the trimming tool and the abrasive top block on the corresponding side can simultaneously abut against the surface of the crucible side wall to be processed when the torsion spring is not under stress.

2. The repairing mechanism for the side wall of a graphite crucible according to claim 1 is characterized in that: The body of the blank repairing tool is formed of high carbon steel, and the abrasive top block and the processing blade surface are both formed of hard alloy material.

3. The repairing mechanism for the side wall of graphite crucible according to claim 1 is characterized in that: The blank repairing tool is a detachable structure on the tool assembly frame.

4. The repairing mechanism for the side wall of graphite crucible according to claim 1, characterized in that: The built-in torsion spring in the shaft assembly structure is a replaceable structure.

5. The repairing mechanism for the side wall of graphite crucible according to claim 1, characterized in that: The structure for adjusting the abutment angle of the blank repairing tool on the tool assembly frame is a ratchet pawl structure.

6. The repairing mechanism for the side wall of graphite crucible according to claim 1, characterized in that: The structure for adjusting the abutment angle of the blank repairing tool on the tool assembly frame is a swivel seat with a locking device.

7. The repairing mechanism for the side wall of a graphite crucible according to claim 1, characterized in that: The tool assembly frame is assembled with the frame of the blank repairing equipment through the telescopic arm, and the advance and retract operations of the blank repairing tool can be realized through the feeding of the telescopic arm.

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