Product sharp-corner-free type chamfering cutter and product hole machining process based on product sharp-corner-free type chamfering cutter

Abstract

The invention discloses a product sharp-corner-free type chamfering cutter and a product hole machining process based on the product sharp-corner-free type chamfering cutter. The product sharp-corner-free type chamfering cutter comprises a cutter body and a cutting edge, the tip end of the cutter body is of a cone frustum structure, a groove is formed in the tip end of the cutter body, the cutting edge is formed around the groove, and a chamfering edge line is formed on the cutting edge; a first linear section and an arc-shaped section are formed on the chamfer edge line, and the first linear section is located in front of the arc-shaped section and tangent to the arc-shaped section. According to the product sharp-corner-free chamfering cutter and the product hole machining process based on the product sharp-corner-free chamfering cutter, the problem that in the prior art, a sharp corner is formed at the joint of the inner wall of a product inner hole and the end face of a product due to the fact that the edge line of a cutting edge is a straight line is solved.

Description

Technical Field

[0001] The invention relates to the field of product chamfering, and in particular to a product non-sharp-corner chamfering cutter and a product hole processing process based on the chamfering cutter. Background Art

[0002] like Figure 1 as well as Figure 2 As shown, in the prior art, the chamfering tool includes a tool body and a blade. The tip of the tool body is a frustum structure. A groove is provided at the tip of the tool body. A blade is formed around the groove. The angle between the edge line of the blade and the center line of the chamfering tool is an acute angle. The edge line of the blade is a straight line. When the chamfering tool rotates, it extends from the end face of the product into the inner hole of the product, and then chamfers the inner hole of the product. The blade forms a chamfering edge line. Since the chamfering edge line is a straight line, a sharp corner is formed at the connection between the inner wall of the inner hole of the product and the end face of the product. The sharp corner does not meet the product quality requirements. Summary of the invention

[0003] The present invention aims to provide a product chamfering tool without sharp corners and a product hole processing technology based thereon, so as to solve the problem in the prior art that a sharp corner is formed at the connection between the inner wall of the product inner hole and the end face of the product because the edge line of the blade is a straight line.

[0004] To achieve the above object, the present invention adopts the following technical solutions: The present invention first discloses a product of a non-sharp-corner chamfering tool, comprising: the chamfering tool comprises a tool body and a blade, the tip of the tool body is a frustum structure, a groove is opened at the tip of the tool body, a blade is formed around the groove, a chamfering edge line is formed on the blade, the chamfering edge line is formed with a first straight line segment and an arc segment, the first straight line segment is located in front of the arc segment, and the first straight line segment is tangent to the arc segment.

[0005] Preferably, the blade edge line further forms a second straight line segment, the second straight line segment is located behind the arc segment, and the second straight line segment is tangent to the arc segment.

[0006] Preferably, the tip of the cutter body is provided with a close-fitting surface, and the close-fitting surface is used to close-fit with the inner hole of the product.

[0007] Preferably, the tip of the blade body is provided with an inclined surface, the inclined surface is located between the chamfered edge line and the abutting surface, and the inclined surface is inclined toward the axis of the blade body so that the chamfered edge line emerges from the inclined surface.

[0008] The present invention also discloses a product hole processing process, which is implemented based on the product non-sharp chamfering cutter as described above, wherein the product non-sharp chamfering cutter is connected to the output end of a rotary drive device, the rotary drive device is installed on a movable seat, and the movable seat is connected to a linear drive device. The product hole processing process has the following steps: S1, using a rotary drive device to drive the product non-sharp chamfering cutter to rotate; S2, a linear drive device drives the rotary drive device, the movable seat and the product non-sharp chamfering cutter to move, the product non-sharp chamfering cutter extends into the inner hole of the product, and processes the inner hole of the product, and the processing steps are as follows: S21, the first straight line segment on the blade extends into the inner hole of the product, and the blade performs a turning process on the inner hole of the product; S22, the connection between the inner wall of the inner hole of the product and the end face of the product is a corner, and the arc segment on the blade contacts the corner, and the corner is an arc structure after processing.

[0009] Preferably, in steps S21 and S22, the close contact surface is in close contact with the inner wall of the inner hole of the product.

[0010] Compared with the prior art, the present invention has the following beneficial effects: In the present application, by adding an arc segment above the first straight line segment, the first straight line segment below is used to process the inner wall of the inner hole of the product. Finally, the first straight line segment processes the inner hole of the product, and the arc segment also processes the corner where the inner wall of the inner hole in the product and the end face of the product are connected, so that the corner is changed from the sharp corner of the prior art to an arc structure, realizing the arc transition between the inner wall of the inner hole and the end face of the product, avoiding the generation of sharp corners on the product in the prior art, achieving the requirement of no sharp corners on the product, and ensuring product quality.

[0011] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the chamfering cutter and the product in the prior art.

[0013] Figure 2 It is a cross-sectional view of the chamfering cutter and the product in the prior art.

[0014] Figure 3 This is a structural schematic diagram of the non-pointed chamfering cutter and the product in this application.

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 This is a cross-sectional view of the non-pointed chamfering cutter and the product in this application.

[0017] Figure 6 This is a schematic diagram of the structure of the non-pointed chamfering cutter of the product in this application.

[0018] Reference numerals: blade body 11 , blade edge 12 , first straight segment 121 , second straight segment 122 , arc segment 123 , groove 13 , close-fitting surface 14 , inclined surface 15 , product 2 , inner hole 21 , sharp corner 22 , corner 23 . DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments: Example 1

[0020] like Figures 3 to 6 As shown, this embodiment discloses a product of a non-sharp-corner chamfering tool, including: the chamfering tool includes a tool body 11 and a blade 12, the tip of the tool body 11 is a frustum structure, a groove 13 is opened at the tip of the tool body 11, a blade 12 is formed around the groove 13, the blade 12 is formed with a chamfering edge line, the chamfering edge line is formed with a first straight line segment 121 and an arc segment 123, the first straight line segment 121 is located in front of the arc segment 123, and the first straight line segment 121 is tangent to the arc segment 123.

[0021] The edge line of the blade 12 is also formed with a second straight segment 122, which is located behind the arc segment 123, and is tangent to the arc segment 123. The arc segment 123 is arranged between the first straight segment 121 and the second straight segment 122, and the additional arrangement of the second straight segment 122 makes it easier to arrange the arc segment 123 between the first straight segment 121 and the second straight segment 122, so that the arc segment 123 can be more easily processed on the product 2 without sharp corners 22 type chamfering cutter.

[0022] The tip of the cutter body 11 is provided with a close contact surface 14, which is used to be in close contact with the inner hole 21 of the product 2. The setting of the close contact surface 14 enables the entire product 2 to rotate without sharp corners 22 when the chamfering cutter is rotated, guided by the inner wall of the inner hole 21 of the product 2.

[0023] The tip of the cutter body 11 is provided with an inclined surface 15, which is located between the chamfer edge line and the close contact surface 14, and the inclined surface 15 is inclined toward the axis of the cutter body 11, so that the chamfer edge line emerges from the inclined surface 15. The design of the inclined surface 15 allows the edge line of the blade 12 to emerge, making it easier to process. Example 2

[0024] This embodiment discloses a product hole processing process, which is implemented based on the product non-sharp chamfering cutter as described in Example 1, and the product non-sharp chamfering cutter is connected to the output end of the rotary drive device, the rotary drive device is installed on the moving seat, and the moving seat is connected to the linear drive device. The product hole processing process has the following steps: S1, using the rotary drive device to drive the product 2 non-sharp 22 type chamfering cutter to rotate; S2, the linear drive device drives the rotary drive device, the moving seat and the product 2 non-sharp 22 type chamfering cutter to move, and the product 2 non-sharp 22 type chamfering cutter extends into the inner hole 21 of the product 2 to process the inner hole 21 of the product 2, and the processing steps are as follows: S21, the first straight line segment 121 on the blade 12 extends into the inner hole 21 of the product 2, and the blade 12 performs a turning process on the inner hole 21 of the product 2; S22, the connection between the inner wall of the inner hole 21 of the product 2 and the end face of the product 2 is a corner 23, and the arc segment on the blade 12 contacts the corner 23, and the corner 23 is a circular arc structure after processing.

[0025] In steps S21 and S22 , the close contact surface 14 is in close contact with the inner wall of the inner hole 21 of the product 2 .

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. The product has no sharp corner chamfering cutter, including: The chamfering tool comprises a tool body and a blade. The tip of the tool body is a truncated cone structure. A groove is provided at the tip of the tool body. A blade is formed around the groove. The blade has a chamfered edge line. The tool body is characterized in that: The chamfered edge line is formed with a first straight line segment and an arc segment, the first straight line segment is located in front of the arc segment, and the first straight line segment is tangent to the arc segment.

2. The product non-sharp chamfering tool according to claim 1 is characterized in that: The edge line of the blade also forms a second straight line segment, the second straight line segment is located behind the arc segment, and the second straight line segment is tangent to the arc segment.

3. The product non-sharp chamfering tool according to claim 2 is characterized in that: The tip of the cutter body is provided with a close-fitting surface, and the close-fitting surface is used to close-fit with the inner hole of the product.

4. The product non-pointed chamfering cutter according to claim 3 is characterized in that: The tip of the cutter body is provided with an inclined surface, which is located between the chamfered edge line and the close-fitting surface. The inclined surface is inclined toward the axis of the cutter body so that the chamfered edge line emerges from the inclined surface.

5. Product hole processing technology, characterized in that: The product hole processing process is implemented based on the product non-sharp chamfering tool according to any one of claims 1 to 4, wherein the product non-sharp chamfering tool is connected to the output end of a rotary drive device, the rotary drive device is mounted on a movable seat, and the movable seat is connected to a linear drive device. The product hole processing process is as follows: S1. Using a rotary drive device to drive the product non-sharp chamfering cutter to rotate; S2, the linear drive device drives the rotary drive device, the moving seat and the product non-sharp chamfering cutter to move, and the product non-sharp chamfering cutter extends into the inner hole of the product to process the inner hole of the product, and the processing steps are as follows: S21, the first straight line segment on the blade extends into the inner hole of the product, and the blade performs turning processing on the inner hole of the product; S22. The connection between the inner wall of the inner hole of the product and the end face of the product is a corner, and the arc section on the blade contacts the corner. After processing, the corner has an arc structure.

6. The product hole processing process according to claim 5, characterized in that: In steps S21 and S22, the close contact surface is in close contact with the inner wall of the inner hole of the product.

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