Cutter for taking center material from blind hole large crucible

Abstract

The cutter comprises a cutter bar, a cutter holder and a blade, the cutter holder is fixedly mounted at one end of the cutter bar, the blade is mounted on the cutter holder, a clamping portion is arranged at the rear end of the cutter bar, a connecting rod is arranged at the rear end of the clamping portion, the clamping portion is clamped by a machine tool, the connecting rod penetrates through the clamping portion of the machine tool, and the cutter bar is connected with the connecting rod. A rotating connector is installed at the rear end of the connecting rod and connected with an air pump through an air pipe, an air hole is formed in the middle of the cutter bar, the cutter holder, the clamping part and the connecting rod in a penetrating mode, the rotating connector is installed at the end of the air hole, a transition conical surface is arranged at the end, connected with the cutter holder, of the cutter bar, and the size of the end, close to the cutter holder, of the transition conical surface is the largest. Due to the arrangement of the transition conical surface, the space for containing cuttings can be increased, and the cuttings are conveyed to the hole along the transition conical surface and then conveyed out through the spiral blade; according to the center material taking device, center materials in the crucible machining process can be rapidly taken out, and the situation that the center materials are accumulated in machining holes, scratch the side walls of the machining holes and affect the quality of the crucible is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crucible processing, and particularly relates to a tool for taking central material of a blind-hole large crucible. Background Art

[0002] A crucible is a container for melting and refining molten metal, as well as for solid-liquid heating and reaction. Crucibles are generally made of porcelain, and the specifications include 10, 15, 25, 50 mL, etc. The types include porcelain crucibles, iron crucibles, alumina crucibles, etc. Crucibles can withstand high temperatures and are used for burning precipitates, melting salts that do not react with the crucible, and dehydrating crystalline hydrates. Crucibles are made of materials such as lime, carbon, and various other refractory clays. Graphite is one of the commonly used materials for crucibles. When processing graphite into a crucible, generally, a graphite rod is first processed into a crucible blank, and then the middle of the blank is hollowed out to form a crucible inner cavity. Due to the relatively soft texture of the graphite material, during processing, if the chips cannot be discharged in time during the process of removing the central material, it is easy to scratch the inner wall of the crucible, thereby affecting the quality and appearance of the crucible. Especially for the processing of large-sized blind-hole crucibles, the utility model has developed a material-taking tool for the processing of blind-hole large crucibles. Content of the Utility Model

[0003] The purpose of the utility model is to provide a tool for taking central material of a blind-hole large crucible.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A tool for taking central material of a blind-hole large crucible includes a tool shank, a tool holder, and a cutting blade. The tool holder is fixedly installed at one end of the tool shank, and the cutting blade is installed on the tool holder. A clamping portion is provided at the rear end of the tool shank, and a connecting rod is provided at the rear end of the clamping portion. The machine tool clamps the clamping portion, the connecting rod passes through the clamping portion of the machine tool, and a rotary joint is installed at the rear end of the connecting rod. The rotary joint is connected to an air pump through an air pipe. An air hole runs through the tool shank, the tool holder, the clamping portion, and the connecting rod. The machine tool clamps the clamping portion, and the connecting rod passes through the clamping portion of the machine tool to avoid interference between the rotary joint and the clamping portion of the machine tool. The air pump blows high-pressure gas into the bottom of the processing hole of the crucible body through the air hole to blow out the chips. The rotary joint is installed at the end of the air hole. One end of the tool shank connected to the tool holder is provided with a transition conical surface, and the size of the transition conical surface is the largest near the tool holder end. The setting of the transition conical surface can increase the space for accommodating chips, so that the chips are transmitted along the transition conical surface to the hole and then conveyed out through the spiral blade.

[0006] Furthermore, spiral blades are provided on both the middle section of the tool shank and the transition conical surface. The spiral blades can convey the chips out of the processing hole to avoid their accumulation in the processing hole and thus scratching the inner wall.

[0007] Further, the cross-section of the clamping portion has a regular polygon structure. Being set as a regular polygon facilitates the clamping of the tool bar onto the machine tool.

[0008] Further, the blade is fixedly installed on the tool holder through fixing screws, which facilitates the replacement of the blade when it is damaged.

[0009] Further, the tool holder is provided with mounting counterbores, and the connecting section of the tool bar is provided with corresponding threaded holes. The connecting screw passes through the counterbores and cooperates with the threaded holes to fixedly connect the tool holder and the tool bar. The tool holder can be detached from the tool bar, which facilitates the replacement of the tool holder.

[0010] In summary, the present utility model has the following beneficial effects: The present utility model can quickly extract the central material during the processing of the crucible, avoiding the accumulation of the central material in the processing hole, thereby scratching the side wall of the processing hole and affecting the quality of the crucible. Description of the Drawings

[0011] Figure 1 is a cross-sectional view of the present utility model;

[0012] Figure 2 is a schematic structural view of the end face of the material extraction tool of the present utility model.

[0013] In the figure, 1, tool bar; 2, tool holder; 3, blade; 4, transition conical surface; 5, mounting counterbore; 6, connecting screw; 7, spiral blade; 8, clamping portion; 9, connecting rod; 10, air hole; 11, rotary joint; 12, crucible body; 13, processing hole; 14, fixing screw. Specific Embodiments

[0014] The following further describes the present utility model in detail with reference to the accompanying drawings. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] Such as Figure 1 and Figure 2As shown in the figure, a tool for taking the central material of a blind-hole large crucible includes a tool shank 1, a tool holder 2 and a cutting blade 3. The tool holder 2 is fixedly installed at one end of the tool shank 1, and the cutting blade 3 is installed on the tool holder 2. A clamping portion 8 is provided at the rear end of the tool shank 1, and a connecting rod 9 is provided at the rear end of the clamping portion 8. The machine tool clamps the clamping portion 8, and the connecting rod 9 passes through the clamping portion of the machine tool. A rotary joint 11 is installed at the rear end of the connecting rod 9, and the rotary joint 11 is connected to an air pump through an air pipe. An air hole 10 runs through the middle of the tool shank 1, the tool holder 2, the clamping portion 8 and the connecting rod 9. The machine tool clamps the clamping portion 8, and the connecting rod 9 passes through the clamping portion of the machine tool to avoid interference between the rotary joint 11 and the clamping portion of the machine tool. The air pump blows high-pressure gas into the bottom of the processing hole 13 of the crucible body 12 through the air hole 10 to blow out the chips. The rotary joint 11 is installed at the end of the air hole 10. One end of the tool shank 1 connected to the tool holder 2 is provided with a transition cone surface 4, and the size of the transition cone surface 4 is the largest near the tool holder 2 end. The setting of the transition cone surface 4 can increase the space for accommodating chips, so that the chips are transferred to the hole along the transition cone surface 4 and then conveyed out through the spiral blade 7.

[0016] Furthermore, spiral blades 7 are provided on both the middle section of the tool shank 1 and the transition cone surface 4. The spiral blades 7 can convey the chips out of the processing hole 13 to prevent them from accumulating in the processing hole 13 and scratching the inner wall.

[0017] Furthermore, the cross-section of the clamping portion 8 is in a regular polygon structure. Being set as a regular polygon facilitates the clamping of the tool shank 1 onto the machine tool.

[0018] Furthermore, as Figure 2 shown in the figure, the cutting blade 3 is fixedly installed on the tool holder 2 through a fixing screw 14, which facilitates the replacement of the cutting blade 3 when it is damaged.

[0019] Furthermore, an installation counterbore 5 is provided on the tool holder 2, and a corresponding threaded hole is provided on the connecting section of the tool shank 1 and the tool holder 2. The connecting screw 6 passes through the counterbore and cooperates with the threaded hole to fixedly connect the tool holder 2 and the tool shank 1. The tool holder 2 can be detached from the tool shank 1, which facilitates the replacement of the tool holder 2.

[0020] Working principle: During processing, the air pump blows high-pressure gas into the bottom of the processing hole 13 of the crucible body 12 through the air hole 10, blows the generated chips (central material) to the transition cone surface 4 part, and then conveys them out of the processing hole 13 through the spiral blade 7, effectively reducing the scratching of the processing hole 13 by the chips and improving the production quality of the crucible.

[0021] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A knife for taking the center material from a large blind hole crucible, characterized in that: The invention comprises a knife bar (1), a knife seat (2) and a blade (3), wherein the knife seat (2) is fixedly mounted on one end of the knife bar (1), and the blade (3) is mounted on the knife seat (2). A clamping portion (8) is arranged at the rear end of the knife bar (1), a connecting rod (9) is arranged at the rear end of the clamping portion (8), and a rotating joint (11) is installed at the rear end of the connecting rod (9). An air hole (10) is passed through the middle of the knife bar (1), the knife seat (2), the clamping portion (8) and the connecting rod (9), and the rotating joint (11) is installed at the end of the air hole (10). A transition cone (4) is arranged at one end of the knife bar (1) connected to the knife seat (2), and the size of the transition cone (4) is the largest at the end close to the knife seat (2).

2. A knife for taking out center material from a large blind crucible according to claim 1, characterized in that: The middle section of the knife rod (1) and the transition cone surface (4) are both provided with spiral blades (7).

3. A knife for taking out center material from a large blind crucible according to claim 2, characterized in that: The cross section of the clamping portion (8) is a regular polygonal structure.

4. A knife for taking out center material from a large blind crucible according to claim 3, characterized in that: The blade (3) is fixedly mounted on the blade holder (2) via a fixing screw (14).

5. A knife for taking center material from a large blind crucible according to claim 4, characterized in that: The knife seat (2) is provided with a mounting countersunk hole (5), the connecting section between the knife rod (1) and the knife seat (2) is provided with a corresponding threaded hole, and the connecting screw (6) passes through the countersunk hole and cooperates with the threaded hole to fix the knife seat (2) and the knife rod (1) together.

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