A double-hole annular groove blade

Abstract

This utility model provides a double-hole annular groove insert, comprising an integrally formed tool holder and a tool body. The tool holder has a rectangular plate structure, and the tool body has an inclined structure. Two mounting through holes are formed in the middle of the tool holder, spaced apart along the length of the tool holder. The line connecting the centers of the two mounting through holes is parallel to the length of the tool holder. The cutting edges of the tool body are symmetrically distributed on the left and right sides of the tool holder. The angle between the tool body and the plane of the tool holder is an acute angle. An integrally formed annular groove is formed on one side of each of the two tool bodies. Both sides of the cutting surface of the tool holder have an annular groove surrounding the tool body. Through the cooperation of the double mounting through holes and the annular boss, combined with the stress dispersion effect of the rounded corners, the insert is securely installed, improving machining stability. For chip removal, the guide slope, U-shaped annular groove, and spiral guide rib work together to achieve orderly chip discharge, reducing workpiece scratches and tool wear.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, specifically a double-hole annular groove insert. Background Technology

[0002] In the modern machining industry, cutting inserts are the core tools for cutting and shaping materials such as metals. Their performance directly affects processing efficiency, workpiece accuracy, and production costs. Existing inserts lack dedicated chip guiding and removal structures in the cutting area. During the cutting process, ribbon-like, curled, or fragmented chips often accumulate randomly between the cutting edge and the workpiece. The accumulated chips will rub and squeeze against the machined surface of the workpiece, causing surface scratches, increased roughness, and affecting the surface quality of the workpiece. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a double-hole annular groove insert to solve the problems mentioned in the background art. This utility model has a novel structure. By using double mounting through holes and annular bosses in combination with the stress dispersion effect of rounded corners, it ensures stable insert installation and improves machining stability. In terms of chip removal, the guide slope, U-shaped annular groove and spiral guide rib work together to achieve orderly chip removal and reduce workpiece scratches and tool wear.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-hole annular groove blade, comprising an integrally formed handle and blade body. The handle is a rectangular plate structure, and the blade body is an inclined structure. Two mounting through holes are provided in the middle of the handle, and the two mounting through holes are spaced apart along the length of the handle. The line connecting the centers of the two mounting through holes is parallel to the length of the handle. The blade body has symmetrically distributed cutting edges on the left and right sides of the handle. The angle between the blade body and the plane of the handle is an acute angle. An integrally formed annular groove is provided on one side of each of the two blade bodies. Both sides of the cutting surface of the handle have an annular groove surrounding the blade body, and a gap is provided between the starting end of the annular groove and the root of the blade body.

[0005] Furthermore, the inner walls of the two mounting through holes are provided with annular bosses.

[0006] Furthermore, the cross-section of the annular groove is U-shaped, the width of the annular groove opening is greater than its depth, and the bottom wall of the annular groove is an arc-shaped transition surface. The inner sidewall of the annular groove is set at an acute angle to the top surface of the tool holder.

[0007] Furthermore, a heat dissipation fin assembly is fixedly connected to the non-cutting surface of the tool holder. The heat dissipation fin assembly comprises several parallel rectangular fins. The length of the heat dissipation fin assembly is the same as the length of the tool holder, and the fins are integrally formed with the tool holder using a metal forging process.

[0008] Furthermore, a flow-guiding slope is formed between the side of the blade near the handle and the inner wall of the annular groove, and the flow-guiding slope is set at an acute angle with the top surface of the handle.

[0009] Furthermore, a spiral guide rib is fixedly connected to the inner wall of the annular groove. The cross-section of the spiral guide rib is an isosceles triangle and extends continuously along the inner wall of the annular groove, guiding the chips to be discharged in an orderly manner along the spiral direction.

[0010] Furthermore, the four corners of the handle are rounded, and the rounded corners of the four corners of the handle are smoothly transitioned to their sides and end faces. The center of the rounded corner is located at the intersection of the outer extension lines of the four corners of the handle.

[0011] The beneficial effects of this utility model are:

[0012] 1. This double-hole annular groove insert is fitted with an annular boss through double mounting holes. Combined with the stress dispersion effect of the rounded corners, it ensures that the insert is installed firmly and improves machining stability. In terms of chip removal, the guide slope, U-shaped annular groove and spiral guide rib work together to achieve orderly chip removal and reduce workpiece scratches and tool wear.

[0013] 2. This double-hole annular groove insert increases the heat dissipation area through an integrally formed heat dissipation fin assembly, which can quickly dissipate heat and extend the tool life. During cutting, the sharp angle design of the tool body and the symmetrical cutting edge reduce the cutting force and improve machining accuracy and surface quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a double-hole annular groove blade according to the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of the overall structure of a double-hole annular groove blade according to the present invention;

[0016] Figure 3 This utility model Figure 2 -Enlarged structural diagram at point A;

[0017] Figure 4 This is a schematic diagram of the overall side section of a double-hole annular groove blade according to the present invention.

[0018] In the diagram: 1. Tool holder; 2. Tool body; 3. Mounting through hole; 4. Cutting edge; 5. Annular boss; 6. Annular groove; 7. Heat dissipation fin assembly; 8. Rounded corner; 9. Guide slope; 10. Spiral guide rib. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please refer to Figures 1 to 4 This utility model provides a technical solution: a double-hole annular groove blade, comprising an integrally formed handle 1 and blade 2. The handle 1 has a rectangular plate structure, and the blade 2 has an inclined structure. Two mounting through holes 3 are opened in the middle of the handle 1. The two mounting through holes 3 are arranged at intervals along the length direction of the handle 1. The line connecting the centers of the two mounting through holes 3 is parallel to the length direction of the handle 1. The blade 2 has cutting edges 4 symmetrically distributed on the left and right sides of the handle 1. The angle between the blade 2 and the plane of the handle 1 is an acute angle. An integrally formed annular groove 6 is provided on one side of each blade 2. Both sides of the cutting surface of the handle 1 have an annular groove 6 surrounding the blade 2. There is a gap between the starting end of the annular groove 6 and the root of the blade 2.

[0021] In this embodiment, the inner walls of the two mounting through holes 3 are provided with annular bosses 5. The cross-section of the annular groove 6 is U-shaped, the width of the groove opening of the annular groove 6 is greater than its depth, and the bottom wall of the annular groove 6 is an arc-shaped transition surface. The inner sidewall of the annular groove 6 is set at an acute angle with the top surface of the tool holder 1. A heat dissipation fin assembly 7 is fixedly connected to the non-cutting surface of the tool holder 1. The heat dissipation fin assembly 7 includes several parallel rectangular fins. The length of the fin assembly 7 is the same as the length of the tool holder 1. It is integrally formed with the tool holder 1 using a metal forging process. A guide slope 9 is formed between the side of the body 2 near the handle 1 and the inner wall of the annular groove 6. The guide slope 9 is set at an acute angle with the top surface of the handle 1. A spiral guide rib 10 is fixedly connected to the inner wall of the annular groove 6. The cross-section of the spiral guide rib 10 is an isosceles triangle and extends continuously along the inner wall of the annular groove 6 to guide the chips to be discharged in an orderly manner along the spiral direction. The four corners of the handle 1 are provided with rounded corners 8. The rounded corners 8 of the four corners of the handle 1 are smoothly transitioned with their sides and end faces. The center of the rounded corner 8 is located at the intersection of the outer extension lines of the four corners of the handle 1.

[0022] Specifically, the two mounting through holes 3 in the middle of the tool holder 1 are connected to the inner wall annular boss 5 by bolts. The smooth transition of the four corner rounded corners 8 of the tool holder 1 reduces stress and achieves a stable fixation between the cutting tool and the machine tool holder. During cutting, the acute angle between the tool body 2 and the tool holder 1 allows the symmetrically distributed cutting edges 4 to cut into the workpiece at a suitable angle, completing the cutting efficiently. The chips flow through the surface of the tool body 2 to the guide slope 9 and are guided into the annular groove 6. In the annular groove 6 with a U-shaped cross section and an arc-shaped transition bottom wall, the chips are guided by the spiral guide ribs 10 and discharged in an orderly manner along the spiral direction. At the same time, the cutting heat is transferred through the tool holder 1 to the heat dissipation fin group 7 on the non-cutting surface. With its large area of ​​parallel rectangular fins, the heat is quickly dissipated, maintaining a suitable temperature for the tool.

[0023] When using the device, firstly, the cutting insert is installed through two mounting through holes 3 spaced apart along the length of the middle of the tool holder 1. The annular boss 5 on the inner wall of the mounting through hole 3 cooperates with the mounting bolt to firmly fix the cutting insert to the machine tool holder. The rounded corners 8 at the four corners of the tool holder 1 are designed for smooth transition to avoid stress concentration during installation and ensure overall installation stability. After starting the machine tool, the structure in which the cutting body 2 and the plane of the tool holder 1 are set at an acute angle allows the cutting edges 4, which are symmetrically distributed on the left and right sides of the tool holder, to cut into the workpiece at a suitable angle and begin cutting. During the cutting process, the chips generated flow along the surface of the cutting body 2 and are guided into the annular groove 6 by the guide slope 9 formed by the side of the cutting body near the tool holder and the inner wall of the annular groove 6. The U-shaped cross-section of the annular groove 6, the groove opening being wider than its depth, and the bottom wall having an arc-shaped transition surface provide a smooth channel for chip flow. The spiral guide ribs 10 on its inner wall further guide the chips to be discharged in an orderly manner along the spiral direction, avoiding chip accumulation that could scratch the workpiece or aggravate tool wear. At the same time, the large amount of heat generated during cutting is dissipated through the tool holder 1. The heat dissipation fin assembly 7, which is composed of several parallel rectangular fins, is made of metal forging process and is integrally formed with the tool holder. With its large heat dissipation area, it can quickly dissipate heat, maintain the tool at a suitable working temperature, and ensure cutting performance and service life until the entire cutting process is completed.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-hole annular groove blade, comprising an integrally formed shank (1) and blade (2), characterized in that: The handle (1) is a rectangular plate structure, and the blade (2) is an inclined structure. Two mounting through holes (3) are opened in the middle of the handle (1). The two mounting through holes (3) are arranged at intervals along the length direction of the handle (1). The line connecting the centers of the two mounting through holes (3) is parallel to the length direction of the handle (1). The blade (2) is symmetrically distributed on the left and right sides of the handle (1) with cutting edges (4). The angle between the blade (2) and the plane of the handle (1) is an acute angle. One side of the two blades (2) is provided with an integrally formed annular groove (6) around the blade (2) on both sides of the cutting surface of the handle (1). The starting end of the annular groove (6) is spaced from the root of the blade (2).

2. The double-hole annular groove blade according to claim 1, characterized in that: The inner walls of the two mounting through holes (3) are provided with annular bosses (5).

3. The double-hole annular groove blade according to claim 1, characterized in that: The cross-section of the annular groove (6) is U-shaped. The width of the groove opening of the annular groove (6) is greater than its depth. The bottom wall of the annular groove (6) is an arc-shaped transition surface. The inner side wall of the annular groove (6) is set at an acute angle with the top surface of the tool holder (1).

4. A double-hole annular groove blade according to claim 1, characterized in that: The non-cutting surface of the tool holder (1) is fixedly connected to a heat dissipation fin group (7). The heat dissipation fin group (7) contains several rectangular fins arranged in parallel. The length of the fin group (7) is the same as the length of the tool holder (1). The tool holder (1) and the fin group (7) are made by metal forging process in one piece.

5. A double-hole annular groove blade according to claim 1, characterized in that: The blade (2) forms a guide slope (9) between the side of the blade (2) near the handle (1) and the inner wall of the annular groove (6), and the guide slope (9) is set at an acute angle with the top surface of the handle (1).

6. A double-hole annular groove blade according to claim 1, characterized in that: The inner wall of the annular groove (6) is fixedly connected with a spiral guide rib (10). The cross section of the spiral guide rib (10) is an isosceles triangle and extends continuously along the inner wall of the annular groove (6), guiding the chips to be discharged in an orderly manner along the spiral direction.

7. A double-hole annular groove blade according to claim 1, characterized in that: The four corners of the handle (1) are provided with rounded corners (8). The rounded corners (8) of the four corners of the handle (1) are smoothly transitioned with their sides and end faces. The center of the rounded corners (8) is located at the intersection of the outer extension lines of the four corners of the handle (1).

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