Novel sapphire bar drawing cutter

Abstract

The utility model discloses a novel sapphire bar cutter, which belongs to the technical field of sapphire processing cutters and comprises a cutter handle, a cutter body and a cutter head. A plug is arranged at the top of the knife body and is inserted into the knife handle to realize connection; the tool bit is fixed to the bottom of the tool body, the outer diameter of the tool bit is larger than that of the tool body, the inner diameter of the tool bit is smaller than that of the tool body, and a plurality of chip grooves are formed in the tool bit. Wherein a reducing section is arranged on the outer wall of the cutter body. The knife body and the knife handle are connected through the positioning structure, so that the knife body can be freely replaced; the reducing section is arranged on the cutter body, and the outer diameter of the reducing section is gradually reduced from one end close to the cutter head to the other end, so that the resistance of upward discharge of chippings generated during machining is gradually reduced, and the chippings are favorably discharged.

Description

Technical Field

[0001] This utility model relates to the field of sapphire machining tool technology, specifically to a novel sapphire rod-scooping tool. Background Technology

[0002] In the field of sapphire crystal processing, the bar-removing cutter is a core cutting tool, and its performance directly affects processing efficiency, finished product quality, and tool life. Traditional bar-removing cutters generally suffer from the following technical defects: the diameter of the cutter head and the cutter body changes gradually, and the chips generated during processing tend to accumulate in the cavity. Especially since sapphire has high hardness and brittleness, poor chip removal can easily cause secondary cutting or tool jamming; the mixture of chips and coolant is not easily carried away by the tool itself, and cannot effectively flush away the high-temperature chips. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a novel sapphire-based shovel blade, which, through the design of a variable-diameter blade, makes it easier to flush out waste chips.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a novel sapphire rod-scooping knife, comprising:

[0005] The tool holder has a through liquid inlet channel.

[0006] The blade has a plug at its top, which is inserted into the handle. The handle has a positioning structure for fixing the plug.

[0007] The cutter head is fixed to the bottom of the cutter body. The outer diameter of the cutter head is larger than the outer diameter of the cutter body, and the inner diameter of the cutter head is smaller than the inner diameter of the cutter body. The cutter head is provided with multiple chip removal grooves.

[0008] The outer wall of the blade is provided with a variable diameter section, the outer diameter of which gradually decreases from one end near the blade head to the other end.

[0009] Preferably, the positioning structure includes:

[0010] A positioning groove is provided at the bottom of the knife handle and communicates with the liquid inlet channel. The plug is inserted into the positioning groove and has a through hole.

[0011] A limiting screw is threaded onto the tool holder, and the end of the limiting screw is inserted into the positioning groove and abuts against the plug.

[0012] Preferably, the positioning groove is stepped and includes a centering groove and a torque groove, with the end of the limiting screw inserted into the torque groove.

[0013] Preferably, the centering groove is conical and the torque groove is rectangular.

[0014] Preferably, the plug includes a tapered portion that mates with a centering groove and a square head that mates with a torque groove.

[0015] Preferably, the top of the square head is provided with a guide slope.

[0016] Preferably, the square head has tapered grooves on all four side walls, and the end of the limiting screw is provided with a tapered top that mates with the tapered grooves.

[0017] Preferably, the end of the tool holder away from the tool body is fixed with a hexagonal head for clamping by the processing equipment.

[0018] Preferably, the outer wall of the variable diameter section is provided with multiple spiral grooves, and the lower end of the spiral grooves is connected to the cutter head.

[0019] Preferably, a plurality of cutting teeth are evenly fixed at the bottom of the blade, and the cutting teeth are arranged at an angle.

[0020] The beneficial effects of this utility model are as follows:

[0021] The blade and handle of this invention are connected by a positioning structure, allowing for free replacement of the blade. A conical positioning groove in the handle engages with the conical part on the plug at the top of the blade to achieve self-centering guidance, improving installation accuracy. The square head on the plug engages with the rectangular torque groove in the handle to effectively transmit torque. The blade features a variable diameter section, with the outer diameter gradually decreasing from one end near the blade tip to the other. This gradually reduces the resistance to upward discharge of chips generated during machining, facilitating chip removal. Threaded grooves on the variable diameter section guide the coolant to flow spirally along the outer wall of the blade, flushing out chips. The designed inclined cutting teeth generate centrifugal force during cutting, promoting chip discharge. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A perspective view of the overall structure of a novel sapphire shovel knife provided for an embodiment of this utility model.

[0024] Figure 2 A perspective view from below shows the overall structure of a novel sapphire shovel knife provided in an embodiment of this utility model.

[0025] Figure 3A perspective view of the handle of a novel sapphire-tipped bar knife provided for an embodiment of this utility model.

[0026] Figure 4 This is a perspective view of the blade and tip of a novel sapphire-tipped bar knife provided for an embodiment of this utility model.

[0027] Figure 5 This is a top view of the blade and tip of a novel sapphire-tipped bar knife provided in an embodiment of this utility model.

[0028] Figure 6 A top view of the overall structure of a novel sapphire shovel knife provided for an embodiment of this utility model.

[0029] Figure 7 for Figure 6 Sectional view at point AA.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Tool holder, 101. Liquid inlet channel, 102. Positioning groove, 1021. Centering groove, 1022. Torque groove, 103. Limiting screw, 1031. Conical top, 104. Hexagonal head, 2. Tool body, 201. Variable diameter section, 202. Spiral groove, 3. Plug, 301. Through hole, 302. Conical part, 303. Square head, 304. Guide ramp, 305. Conical groove, 4. Tool head, 401. Chip removal groove, 402. Cutting teeth. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1:

[0034] like Figures 1 to 7 As shown, Embodiment 1 of this utility model provides a novel sapphire rod extractor, including a handle 1, a blade 2, and a cutting head 4. A hexagonal head 104 is fixed to the top of the handle 1 for easy connection to a machine tool. The handle 1 has a vertically penetrating liquid inlet channel 101 and a stepped positioning groove 102 at the bottom, comprising a conical centering groove 1021 and a rectangular torque groove 1022. A plug 3, which mates with a positioning mechanism, is fixed to the top of the blade 2. The plug 3 has a conical portion 302 and a square head 303. Figure 7As shown, the tapered portion 302 engages with the centering groove 1021 to achieve rapid self-centering guidance. A guide ramp 304 is provided at the top of the square head 303, making it easier for the square head 303 to be inserted into the torque groove 1022. A limiting screw 103 is threaded onto the tool holder 1. The end of the limiting screw 103 has a tapered tip 1031, and each of the four side walls of the square head 303 has a tapered groove 305 that mates with the tapered tip 1031. After the square head 303 is inserted into the torque groove 1022, the limiting screw 103 can be rotated to push the tapered tip 1031 into the tapered groove 305, preventing the square head 303 from disengaging from the torque groove 1022. When the tapered tip 1031 abuts against the tapered groove 305, it also causes the square head 303 to move upwards, causing the tapered portion 302 to press firmly against the centering groove 1021.

[0035] The above settings ensure the installation accuracy of the tool body 2 and the tool holder 1, while also providing reliable torque transmission capability, effectively suppressing the loss of accuracy caused by machining vibration.

[0036] To facilitate chip removal, the blade 2 of this invention features a variable diameter section 201, with the cutting head 4 fixed to the bottom of the blade 2. The cutting head 4 is equipped with diamond abrasive particles. The outer diameter of the cutting head 4 is larger than the outer diameter of the blade 2, while its inner diameter is smaller. This ensures that the circular groove cut by the cutting head 4 is larger than the blade 2, reducing the likelihood of the blade 2 getting stuck. Simultaneously, the gap between the blade 2 and the inner wall of the circular groove forms a chip removal channel. The variable diameter section 201 gradually narrows from the cutting head 4 to the handle 1, causing the distance between the blade 2 and the inner wall of the cut circular groove to gradually increase from bottom to top, reducing resistance to chip removal.

[0037] Example 2:

[0038] Based on Embodiment 1, Embodiment 2 of this utility model further improves the cooling and chip removal system of the cutter body 2. Multiple spiral grooves 202 are added to the outer wall of the variable diameter section 201 for flow guidance. The spiral grooves 202 extend upwards from the connection between the cutter body 2 and the cutter head 4. After the coolant enters the tool holder 1 through the inlet channel 101, it enters the cutter body 2 through the through hole 301 at the top of the plug 3, flowing downwards along the gap between the cutter body 2 and the inner wall of the circular groove, flushing the cutter head 4, and flushing chips from the chip removal groove 401 between the variable diameter section 201 and the inner wall of the circular groove. As the cutter body 2 rotates, the spiral grooves 202 form a stable vortex flow path, which can drive the chips upwards synchronously, enhancing chip removal efficiency. This is particularly suitable for continuous cutting of high-hardness sapphire materials, significantly improving chip removal conditions and extending tool life.

[0039] Example 3:

[0040] Based on Embodiment 2, this utility model further optimizes the structure of the cutter head 4. For example... Figure 2As shown, multiple inclined cutting teeth 402 are evenly fixed at the bottom of the cutter head 4. This makes the cutter head 4 have a strong pushing effect on the cutting fluid and chips when it rotates. Combined with the design of the variable diameter section 201, the mixture of cutting fluid and chips is accelerated more during the upward process, which further improves the chip removal capacity.

[0041] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A novel sapphire extraction rod knife, characterized by, The utility model relates to a cutting tool, which comprises: a handle (1) with a through liquid inlet channel (101) formed thereon; a blade body (2) provided with a plug (3) at the top thereof, the plug (3) being inserted into the handle (1), and the handle (1) being provided with a positioning structure for fixing the plug (3); a blade head (4) fixed at the bottom of the blade body (2), the outer diameter of the blade head (4) being larger than that of the blade body (2), the inner diameter of the blade head (4) being smaller than that of the blade body (2), and a plurality of chip removal grooves (401) being formed in the blade head (4); wherein the outer wall of the blade body (2) is provided with a variable diameter section (201), the outer diameter of the variable diameter section (201) gradually decreasing from one end close to the blade head (4) to the other end.

2. A novel sapphire extraction rod knife according to claim 1, wherein The positioning structure comprises: a positioning groove (102) formed at the bottom of the handle (1) and communicating with the liquid inlet channel (101), the plug (3) being inserted into the positioning groove (102) in a fit manner, and a through hole (301) being formed in the plug (3); a limiting screw (103) threadedly installed on the handle (1), the end of the limiting screw (103) being inserted into the positioning groove (102) and abutting against the plug (3).

3. A novel sapphire extraction rod knife as claimed in claim 2, characterized in that, The positioning groove (102) is in a stepped shape, comprising a centering groove (1021) and a torque groove (1022), and the end of the limiting screw (103) is inserted into the torque groove (1022).

4. A novel sapphire extraction rod knife according to claim 3, wherein The centering groove (1021) is in a conical shape, and the torque groove (1022) is in a rectangular shape.

5. A novel sapphire extraction rod knife as claimed in claim 4, wherein, The plug (3) comprises a conical part (302) matched with the centering groove (1021) and a square head (303) matched with the torque groove (1022).

6. A novel sapphire extraction rod knife as claimed in claim 5, wherein, A guide slope is formed at the top of the square head (303).

7. A novel sapphire extraction rod knife as claimed in claim 5, wherein, A conical groove (305) is formed in each of the four side walls of the square head (303), and the end of the limiting screw (103) is provided with a conical top head (1031) matched with the conical groove (305).

8. A novel sapphire extraction rod knife according to claim 1, wherein A hexagonal head (104) for clamping by a machining device is fixed to the end of the handle (1) away from the blade body (2).

9. The novel sapphire extraction rod knife according to claim 1, wherein A plurality of spiral grooves (202) are formed in the outer wall of the variable diameter section (201), and the lower end of each spiral groove (202) is connected with the blade head (4).

10. The novel sapphire extraction rod knife according to claim 1, wherein A plurality of cutting teeth (402) are uniformly fixed to the bottom of the blade head (4), and the cutting teeth (402) are arranged in an inclined manner.

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