Groove cutting straight knife and lathe

Abstract

The utility model provides a grooving straight knife and a lathe, the grooving straight knife comprises a knife head and a knife body, the knife head and the knife body are of an integrally formed structure, and the knife head and the knife body are made of ledeburite steel materials. According to the groove cutting straight cutter and the lathe, the cutter head and the cutter body of the groove cutting straight cutter are of the integrally-formed structure and are made of ledeburite steel materials, so that the groove cutting straight cutter has high hardness, the problem of cutter vibration is effectively solved, and deep groove and deep hole machining of high-hardness materials can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting and processing, and in particular to a grooving straight cutter and a lathe. Background Art

[0002] For deep groove processing of impellers, the groove depth usually needs to be 78mm and the groove width is relatively narrow at 8mm. The current cutting tools usually vibrate when cutting to a depth of 50mm. The use of welded tools can easily cause chipping of the blade, or the tool head may soften directly, resulting in the scrapping of the tool and the product. Utility Model Content

[0003] The present disclosure provides a grooving straight knife and a lathe to at least solve the above technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, a straight grooving knife is provided, comprising a knife head and a knife body, wherein the knife head and the knife body are an integrally formed structure, and the knife head and the knife body are made of ledeburite steel material.

[0005] In one embodiment, the cutter head includes a first section and a second section connected to the blade body, and in the cross section of the grooving straight knife, the second section forms a first angle with the length direction of the grooving straight knife, and the first angle ranges from 130° to 140°.

[0006] In one embodiment, the first angle is 135°.

[0007] In one embodiment, the thickness of the first section at the end away from the second section is 8 mm, and the thickness of the first section decreases gradually from the end to the second section.

[0008] In one embodiment, the first section includes a first surface and a second surface that are opposite to each other, and the first surface and the second surface respectively form a second angle with the length direction of the straight grooving knife, and the second angle is 1°.

[0009] In one possible implementation manner, the blade head has an end face away from the blade body, and in the longitudinal section of the grooving straight blade, the end face forms a third angle with the longitudinal direction, and the third angle ranges from 3° to 5°.

[0010] In one possible implementation, the third angle is 4°.

[0011] In one embodiment, the lower end of the cutter head has a rounded corner.

[0012] In one possible implementation manner, the blade head and the blade body are made of tungsten-based high-speed steel.

[0013] According to a second aspect of the present disclosure, a lathe is provided, comprising a main body, and also comprising a grooving straight knife as described in any one of the above-mentioned embodiments, wherein the grooving straight knife is arranged on the main body.

[0014] In the present disclosure, since the blade head and blade body of the grooving straight knife are an integrally formed structure and are made of ledeburite steel material, the grooving straight knife has high hardness, effectively solving the problem of tool vibration and being able to achieve deep groove and deep hole processing of high hardness materials.

[0015] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 A front view of a straight grooving knife according to an exemplary embodiment of the present disclosure is shown;

[0019] Figure 2 A top view of a straight grooving knife according to an exemplary embodiment of the present disclosure is shown;

[0020] Figure 3 A cross-sectional view of the blade of a straight grooving knife according to an exemplary embodiment of the present disclosure is shown.

[0021] Explanation of the numbers in the figure: 1, blade head; 2, blade body; 11, first section; 12, second section; 13, end face; 14, fillet; 15, front angle; 16, back angle; 111, first side; 112, second side; 120, first angle; 130, third angle; 1100, second angle. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0023] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 to Figure 3 As shown, a straight grooving knife according to an exemplary embodiment of the present invention comprises a knife head 1 and a knife body 2. The knife head 1 and the knife body 2 are an integrally formed structure, and the knife head 1 and the knife body 2 are made of ledeburite steel.

[0025] In one possible implementation, the blade head 1 and the blade body 2 are made of tungsten high-speed steel.

[0026] In this embodiment, the blade head 1 and blade body 2 of the grooving straight knife are integrally forged with tungsten-based high-speed steel W18Cr4V material, so that the grooving straight knife has high hardness, red hardness and high-temperature hardness, good grinding performance, effectively solves the problem of tool vibration, and can realize deep groove and deep hole processing of high-hardness materials. The cutter head 1 has a blade, and the blade has a front angle 15 and a back angle 16. Preferably, the front angle 15 of the blade is 20°, and the back angle 16 of the blade is 4°. The front angle 15 of the blade affects the size of cutting deformation and cutting force, the durability of the grooving straight knife and the quality of the machined surface. A larger front angle 15 of the blade can make the blade sharper, make cutting easier, reduce cutting deformation and friction, thereby reducing cutting force and cutting power, reduce cutting heat, and improve the quality of the machined surface; the back angle 16 of the blade can reduce the friction between the back tool face and the workpiece and the wear of the back tool face, and its size has a great influence on the durability of the tool and the quality of the machined surface. Therefore, the front angle 15 of the blade and the back angle 16 of the blade are designed to the above-mentioned angles, which can ensure the performance of the grooving straight knife. In the actual production process, the cutter head 1 is particularly thickened, the one-piece straight grooving knife is subjected to quenching and tempering after rough machining, the cutter head 1 is partially quenched, and then the blade of the cutter head 1 is sharpened, which increases the strength of the straight grooving knife, thereby effectively solving the problem of tool vibration. The longitudinal depth of the cutter head 1 is at least 80mm to ensure that the grooving depth can reach 78mm. It is understandable that the size of the straight grooving knife is not limited to this, and can be adaptively designed according to the grooving depth.

[0027] In one embodiment, the blade head 1 includes a first section 11 and a second section 12 connected to the blade body 2. In the cross section of the straight grooving blade, the second section 12 forms a first angle 120 with the length direction of the straight grooving blade. The first angle 120 is in the range of 130° to 140°. Preferably, in one embodiment, the first angle 120 is 135°.

[0028] In one embodiment, the thickness of the first section 11 at the end away from the second section 12 is 8 mm, and the thickness of the first section 11 decreases from the end to the second section 12 .

[0029] Specifically, in one embodiment, the first section 11 includes a first surface 111 and a second surface 112 that are opposite to each other. The first surface 111 and the second surface 112 respectively form a second angle 1100 with the length direction of the straight grooving knife. The second angle 1100 is 1°.

[0030] In this embodiment, the cutter head 1 is particularly thickened, which improves the overall hardness of the grooving straight knife, thereby improving the performance of the grooving straight knife.

[0031] In one embodiment, the blade head 1 has an end face 13 away from the blade body 2. In the longitudinal section of the straight groove blade, the end face 13 forms a third angle 130 with the longitudinal direction. The third angle 130 is in the range of 3° to 5°. Preferably, in one embodiment, the third angle 130 is 4°.

[0032] In one embodiment, the lower end of the cutter head 1 has a rounded corner 14 .

[0033] In this embodiment, the radius of the fillet 14 is 40 mm, and there are two fillets 14, one at the lower end of the end surface 13 of the blade head 1, and the other at the lower end of the connection between the blade head 1 and the blade body 2. It can be understood that the dimensions shown in the present disclosure are not absolute dimension values, and there may be slight deviations within the tolerance range.

[0034] The present disclosure also provides a lathe (not shown in the figure), including a main body, and also includes a grooving straight knife as in any one of the above-mentioned embodiments, the grooving straight knife is set at a specific position on the main body, and is used for deep groove processing of the impeller.

[0035] In the description of the present disclosure, it is necessary to understand that the orientation or positional relationship indicated by the directional words is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein.

[0039] The present disclosure has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present disclosure to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present disclosure is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present disclosure, and these variations and modifications all fall within the scope of protection claimed by the present disclosure. The scope of protection of the present disclosure is defined by the attached claims and their equivalents.

Claims

1. A straight grooving knife, characterized in that: The invention comprises a blade head (1) and a blade body (2); the blade head (1) and the blade body (2) are an integrally formed structure; the blade head (1) and the blade body (2) are made of ledeburite steel material.

2. The straight grooving knife according to claim 1, characterized in that: The blade head (1) comprises a first section (11) and a second section (12) connected to the blade body (2); in a cross section of the grooving straight knife, the second section (12) forms a first angle (120) with the length direction of the grooving straight knife; the first angle (120) is in the range of 130° to 140°.

3. The straight grooving knife according to claim 2, characterized in that: The first angle (120) is 135°.

4. The straight grooving knife according to claim 2, characterized in that: The thickness of the first section (11) at the end away from the second section (12) is 8 mm, and the thickness of the first section (11) decreases gradually from the end to the second section (12).

5. The straight grooving knife according to claim 4, characterized in that: The first section (11) comprises a first surface (111) and a second surface (112) opposite to each other, the first surface (111) and the second surface (112) respectively forming a second angle (1100) with the length direction of the grooving straight knife, and the second angle (1100) is 1°.

6. The straight grooving knife according to claim 1, characterized in that: The blade head (1) has an end face (13) away from the blade body (2); in the longitudinal section of the grooving straight blade, the end face (13) forms a third angle (130) with the longitudinal direction; the third angle (130) is in the range of 3° to 5°.

7. The straight grooving knife according to claim 6, characterized in that: The third angle (130) is 4°.

8. The straight grooving knife according to claim 1, characterized in that: The lower end of the cutter head (1) has a rounded corner (14).

9. The straight grooving knife according to claim 1, characterized in that: The blade head (1) and the blade body (2) are made of tungsten high-speed steel.

10. A lathe, comprising a main body, characterized in that: It also includes a straight grooving knife as described in any one of claims 1 to 9, and the straight grooving knife is arranged on the main body.

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