A cutting device for graphite sleeving

Abstract

The utility model relates to a cutting device for graphite sleeving, including cutter barrel. The cutter barrel is provided with sleeving cutter and cutting knife. The sleeving cutter and cutting knife are arranged at the front end of cutter barrel and are arranged along the circumference of the front end of cutter barrel. The sleeving cutter and cutting knife are installed on the same radius circle with the axis of cutter barrel as the center, and the cutting knife is arranged along the circumference of cutter barrel. The cutting knife is arranged along the circumference of cutter barrel to form a hook shape. The cutting knife can be used for radial cutting of the core after sleeving is completed. Thus, the device can ensure the separation of the core and workpiece after sleeving. The utility model integrates sleeving and cutting on the same tool, without the need for multiple clamping and positioning of the tooling, effectively improving the processing efficiency and reducing the cumulative error of clamping and positioning. Moreover, without the need for re-clamping, damage to the graphite of the sleeving can be avoided, reducing the scrap rate.

Description

Technical Field

[0001] This utility model relates to graphite cutting, to the field of machining, and in particular to a cutting device for graphite sheathing. Background Technology

[0002] A deep hole nesting tool is a specialized cutting tool used in deep hole machining centers. It can reduce production costs by successfully nesting a usable bar stock into a workpiece. In the field of graphite processing, nesting and cutting are common machining operations.

[0003] In existing graphite processing, especially in the processing of large blind-hole graphite products, traditional nesting and cutting operations usually need to be performed in steps, and have the following technical disadvantages:

[0004] 1. Traditional nesting and cutting operations require multiple clamping and positioning, resulting in low processing efficiency and easy accumulation of errors.

[0005] 2. During the nesting process, graphite materials are easily damaged, resulting in a high scrap rate.

[0006] 3. Traditional tool designs cannot guarantee the integrated operation of nesting and cutting, resulting in extended processing time and difficulty in ensuring processing accuracy.

[0007] Chinese patent document CN209665929U discloses a cutting tool for graphite nesting, including a tool holder and a tool body. A cutting blade is provided at one end of the tool body. A cavity is provided inside the tool body. The cavity has an opening on the other side of the tool body. A first connecting screw hole is provided near the opening of the cavity. A telescopic rod is provided inside the cavity. Multiple second connecting screw holes are provided at equal intervals on the telescopic rod. A connecting block is provided at one end of the telescopic rod. The connecting block is connected to the tool holder. The first connecting screw holes and the second connecting screw holes are connected by bolts. This patent can change the connection length between the connecting rod and the tool body according to the size of the graphite cylindrical heater blank being processed, thereby using a single tool to complete the nesting process of graphite cylindrical heater blanks of different sizes. Furthermore, it has a simple structure and is easy to operate.

[0008] However, the patent has the following drawbacks: the tool only achieves the nesting function, while the cutting function requires additional tools or processes. This results in the need to change tools multiple times during processing, increasing processing time and accumulating errors; the tool design, with its complex structure of the telescopic rod and multiple connecting screw holes, increases manufacturing costs and assembly difficulty; although the tool can adapt to different sizes of graphite materials by adjusting the length of the telescopic rod, this adjustment method is cumbersome and may affect the stability of the tool.

[0009] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0010] To address the shortcomings of existing technologies, this invention provides a cutting device for graphite nesting, comprising a cutter cylinder. The cutter cylinder is equipped with a nesting cutter and a cutting cutter. The nesting cutter and the cutting cutter are located at the front end of the cutter cylinder and are arranged circumferentially along the front end of the cutter cylinder. The nesting cutter and the cutting cutter are mounted on a circle of the same radius centered on the axis of the cutter cylinder, and the cutting cutter extends circumferentially along the cutter cylinder. This invention integrates nesting and cutting onto the same cutter, eliminating the need for multiple clamping and positioning of the tooling, effectively improving processing efficiency and reducing the cumulative errors from clamping and positioning. Furthermore, eliminating the need for re-clamping also avoids damage to the graphite in the nested material, reducing the scrap rate.

[0011] According to a preferred embodiment, the blade barrel is provided with a cutting blade shank connected to the cutting blade. The blade barrel and the cutting blade shank are connected by a bearing. The bearing ensures smooth operation of the blade during rotation and reduces friction and wear.

[0012] According to a preferred embodiment, the cutting blade is connected to the blade cylinder in a manner that allows it to rotate around the axis of the cutting blade shank. The length of the cutting blade is set such that the cutting blade rotates through the center of the blade cylinder axis. As the workpiece rotates, the distance between the cutting blade and the center of the blade cylinder gradually decreases, thereby cutting the workpiece.

[0013] According to a preferred embodiment, a guide sleeve is provided at the end of the cut-off shank away from the cut-off blade. The guide sleeve is arranged circumferentially around the cut-off shank. The guide sleeve ensures the straight movement of the cut-off shank during processing and prevents the cut-off shank from tilting.

[0014] According to a preferred embodiment, a cap is provided at the end of the bearing away from the tool barrel and the cutting tool bar. The cap's tightening action prevents the bearing from loosening or shifting under high-speed rotation and cutting forces, thereby ensuring the structural stability of the entire device.

[0015] According to a preferred embodiment, the hollow interior of the blade barrel is further provided with an outwardly extending opening. The opening is positioned perpendicular to the axis of the blade barrel and away from the cutting blade shank.

[0016] According to a preferred embodiment, a fixing member is provided at the end of the tool barrel away from the nesting tool and the cutting tool. The tool barrel is hollow inside, and the end of the tool barrel with the fixing member is closed. In practical applications, this device can be used with a lathe to achieve efficient nesting and cutting of graphite materials by controlling the rotational movement of the workpiece and the feed of the tool. The hollow design of the tool barrel and the setting of the fixing member make the tool more stable during processing and reduce the impact of vibration on processing accuracy.

[0017] According to a preferred embodiment, the cutting blade's blade face is inclined along the axial direction of the blade barrel.

[0018] According to a preferred embodiment, the cutting face of the nesting cutter is inclined along the circumference of the cutter barrel.

[0019] According to a preferred embodiment, the nesting tool is a wedge-shaped cutter formed by cutting a triangular prism head from three edges. The wedge-shaped head can better distribute stress during cutting, reduce localized tool wear, and thus extend tool life. Attached Figure Description

[0020] Figure 1 This is a simplified front view of a preferred embodiment of the cutting device for graphite sheathing provided by this utility model.

[0021] Figure 2 This is a simplified side view of a preferred embodiment of the cutting device for graphite sheathing provided by this utility model.

[0022] Figure 3 This is a simplified structural diagram of a fastener according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a simplified cross-sectional structural diagram of a cutting device for graphite sheathing according to a preferred embodiment of the present invention.

[0024] List of reference numerals

[0025] 1: Nesting knife; 2: Fixing component; 3: Cutting knife; 4: Connecting cap; 5: Bearing; 6: Guide sleeve; 7: Cutting knife bar; 8: Knife barrel. Detailed Implementation

[0026] The following is a detailed explanation with reference to the accompanying drawings.

[0027] Example 1

[0028] To address the problems of low efficiency, high scrap rate, and difficulty in guaranteeing processing accuracy in traditional graphite processing, such as the nesting and cutting operations, this utility model provides a cutting device for graphite nesting, such as... Figure 1 and Figure 4As shown, the device includes a tool cylinder 8. A nesting cutter 1 and a cutting cutter 3 are mounted on the tool cylinder 8. The nesting cutter 1 and the cutting cutter 3 are located at the front end of the tool cylinder 8 and are arranged circumferentially along the front end of the tool cylinder 8. The nesting cutter 1 and the cutting cutter 3 are mounted on a circle of the same radius centered on the axis of the tool cylinder 8, and the cutting cutter 3 extends circumferentially along the tool cylinder 9. In this invention, the nesting cutter 1 can be made of YG6 cemented carbide material to give it high hardness and wear resistance. Therefore, the nesting cutter 1 is suitable for nesting graphite materials. Preferably, the width of the nesting cutter is designed to be 35-40 mm. The design of the material and width of the nesting cutter 1 ensures stable cutting of graphite during the nesting process of this device, thus avoiding damage to the graphite material. Preferably, the cutting cutter 3 can be made of YG6 cemented carbide material. Preferably, the cutting cutter 3 extends circumferentially along the tool cylinder 9 to form a hook shape. Preferably, the cutting cutter 3 can be used for radial cutting of the core material after nesting is completed. Therefore, this device can ensure the separation of the core material from the workpiece after the core is packed. The graphite material breakage rate is reduced from 15% to 5%, and the scrap rate is reduced by 66.7%.

[0029] This invention integrates nesting and cutting onto the same tool, eliminating the need for multiple clamping and positioning of the tooling, effectively improving processing efficiency and reducing the cumulative errors from clamping and positioning. Furthermore, eliminating the need for re-clamping also avoids damage to the graphite in the nested material, reducing the scrap rate.

[0030] According to a preferred embodiment, the blade barrel 8 is provided with a cutting blade rod 7 connected to the cutting blade 3. The blade barrel 8 and the cutting blade rod 7 are connected by a bearing 5. Figure 3 As shown, preferably, the cutting blade 3 and the cutting blade shank 7 can be fixedly connected by bolts. In this invention, the bearing 5 can be a 51304 type one-way thrust ball bearing. Therefore, the bearing 5 can ensure the smooth operation of the blade during rotation and reduce friction and wear.

[0031] According to a preferred embodiment, such as Figure 2 The cutting blade 3 shown is connected to the blade cylinder 8 by rotating around the cutting blade shank 7. The length of the cutting blade 3 is set so that it rotates through the center of the axis of the blade cylinder 8. Thus, the cutting blade 3 can gradually reduce the distance between itself and the center of the blade cylinder 8 as the workpiece rotates, thereby cutting the workpiece.

[0032] According to a preferred embodiment, a guide sleeve 6 is provided at the end of the cutting blade 7 away from the cutting blade 3. The guide sleeve 6 is arranged circumferentially around the cutting blade 7. The guide sleeve 6 ensures the straight movement of the cutting blade 7 during processing and prevents the cutting blade 7 from tilting. In this invention, the cutting blade 7 can be made of 45# steel with a quenching and tempering process. Therefore, the cutting blade 7 has high strength and rigidity, ensuring the stability of the device during processing.

[0033] According to a preferred embodiment, a cap 4 is provided at the end of the bearing 5 away from the tool barrel 8 and the cutting tool shank 7. The cap 4 secures the bearing 5, preventing it from loosening or shifting under high-speed rotation and cutting forces, thus ensuring the structural stability of the entire device. During machining, the cutting tool is subjected to forces in various directions. The cap 4 effectively prevents critical components such as the cutting tool shank 7 and the bearing 5 from falling off due to vibration or impact during machining. This is crucial for improving machining accuracy and extending the service life of the device.

[0034] According to a preferred embodiment, the hollow interior of the blade barrel 8 is further provided with an outwardly extending opening. The opening is positioned perpendicular to the axis of the blade barrel 8 and away from the cutting blade 7.

[0035] According to a preferred embodiment, a fixing member 2 is provided at the end of the cutter barrel 8 away from the nesting cutter 1 and the cutting cutter 3. The cutter barrel 8 is hollow inside, and the end of the cutter barrel 8 with the fixing member 2 is closed. Preferably, as shown... Figure 3 As shown, the fixing member 2 can be a tool shank connecting the entire tool cylinder 8. The operator can clamp the fixing member 2 onto the lathe tool post to fix the tool cylinder 8. Preferably, the tool cylinder 8 can be cylindrical. The cylindrical shape of the tool cylinder 8 ensures the stability of the tool during the operator's nesting and cutting processes. In practical applications, this device can be used in conjunction with a lathe to achieve efficient nesting and cutting of graphite materials by controlling the rotational movement of the workpiece and the feed of the tool. The hollow design of the tool cylinder 8 and the setting of the fixing member 2 make the tool more stable during processing and reduce the impact of vibration on processing accuracy.

[0036] According to a preferred embodiment, the cutting edge of the cutting blade 3 is inclined along the axial direction of the blade barrel 8. More preferably, the holes on the cutting blade 3 are designed to be radially symmetrically distributed to ensure uniform cutting force during the cutting process and avoid uneven stress when the core separates from the workpiece, which could lead to core breakage.

[0037] According to a preferred embodiment, the cutting face of the nesting cutter 1 is inclined along the circumference of the cutter barrel 8. More preferably, the holes on the nesting cutter 1 are designed to be evenly distributed to ensure that the cutting force is evenly distributed during the nesting process and to avoid local stress concentration that could lead to damage to the graphite material.

[0038] According to a preferred embodiment, the nesting tool 1 is a wedge-shaped cutter formed by cutting it open from three sides using a triangular prism head. The wedge-shaped nesting tool 1, formed by cutting with a triangular prism head, provides the tool with higher strength and stability during machining. The wedge-shaped head better disperses stress during cutting, reducing localized tool wear and thus extending tool life. The wedge-shaped head design also facilitates chip removal. Its structure effectively prevents chip accumulation between the tool and the workpiece, reducing the possibility of chip clogging and improving machining efficiency and quality. Preferably, the nesting tool 1 can be connected to the tool holder 8 via a machined tool shank. Figure 4 As shown, the nesting tool 1 is connected to the machining tool holder by bolts.

[0039] The working principle of this utility model is as follows:

[0040] First, the operator clamps the device onto the lathe tool post and the workpiece onto the jaw plate. The operator controls the workpiece to rotate and feeds it onto the large pallet for turning until it reaches the designated position. Then, the operator uses the cutting blade 3 on the tool barrel 8 to perform radial cutting. When the core material is about 50mm in diameter remaining, the operator gently taps the cut core material with the remaining material bar to detach it from the whole piece, thus achieving the purpose of nesting.

[0041] This invention integrates nesting and cutting into a single design, reducing the time spent on multiple clamping and positioning operations and improving processing efficiency. Processing time is reduced from 2 hours to 1 hour, a 50% increase in efficiency. The stability design of the cutter barrel 8 and the cutter shank ensures linear motion during processing, improving machining accuracy. Furthermore, the cutting operation of this device saves material; after cutting, a core with a diameter of 250-260mm and a length of approximately 480mm can be retained, with a net core weight of 45.85kg.

[0042] Throughout the text, the features indicated by “preferred” are only optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

[0043] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The protection scope of this utility model is defined by the claims and their equivalents.

Claims

1. A cutting device for graphite sheathing, comprising a cutter barrel (8), characterized in that, The cutter cylinder (8) is provided with a nesting cutter (1) and a cutting cutter (3). The nesting cutter (1) and the cutting cutter (3) are located at the front end of the cutter cylinder (8) and are arranged circumferentially along the front end of the cutter cylinder (8). The nesting knife (1) and the cutting knife (3) are mounted on a circle of the same radius centered on the axis of the knife cylinder (8), and the cutting knife (3) extends circumferentially along the knife cylinder (8).

2. The cutting device for graphite sheathing according to claim 1, characterized in that, The blade cylinder (8) is provided with a cutting blade rod (7) connected to the cutting blade (3), wherein, The blade barrel (8) and the cutting blade bar (7) are connected by a bearing (5).

3. The cutting device for graphite sheathing according to claim 2, characterized in that, The cutting blade (3) is connected to the blade cylinder (8) by rotating about the cutting blade rod (7) as an axis. The length of the cutting blade (3) is set in such a way that the cutting blade (3) rotates through the center of the axis of the blade cylinder (8).

4. The cutting device for graphite sheathing according to claim 3, characterized in that, A guide sleeve (6) is provided at one end of the cutting blade bar (7) away from the cutting blade (3), and the guide sleeve (6) is arranged in a circumferential manner around the cutting blade bar (7).

5. The cutting device for graphite sheathing according to claim 4, characterized in that, The bearing (5) is provided with a cap (4) at the end away from the knife barrel (8) and the cutting knife bar (7).

6. The cutting device for graphite sheathing according to claim 5, characterized in that, The hollow interior of the knife cylinder (8) is also provided with an outwardly extending opening, wherein, The opening is positioned perpendicular to the axis of the blade barrel (8) and away from the cutting blade bar (7).

7. The cutting device for graphite sheathing according to claim 6, characterized in that, The end of the cutter tube (8) away from the nesting knife (1) and the cutting knife (3) is provided with a fixing member (2). The inside of the cutter tube (8) is hollow, and the end of the cutter tube (8) provided with the fixing member (2) is closed.

8. The cutting device for graphite sheathing according to claim 7, characterized in that, The cutting blade (3) is inclined along the axial direction of the blade cylinder (8).

9. The cutting device for graphite sheathing according to claim 8, characterized in that, The cutting surface of the nesting cutter (1) is inclined along the circumference of the cutter cylinder (8).

10. The cutting device for graphite sheathing according to claim 9, characterized in that, The nesting cutter (1) is a wedge, formed by cutting it open from three sides with a triangular prism cutter head.

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