Chip removal type PCD blade

Abstract

The utility model discloses a chip removal type PCD (Poly Crystal Diamond) blade, which relates to the field of PCD blades and comprises a blade base body, and a cutting edge part is arranged at the tip end of the blade base body; the tongue plate is arranged on the surface of the blade part, the tip end of the tongue plate points to the tip end of the blade part, the tip end of the blade part and the cutting areas on the two sides all protrude out of the tip end and the side edges of the tongue plate, and the edges on the two sides of the tongue plate incline inwards from top to bottom, so that a chip breaking area with a triangular section is formed between the edge of the tongue plate and the blade part; the tongue plate is covered on the surface of the blade part, and the chip breaking area with the inclined surface is formed by the side edge of the tongue plate and the blade part, so that chips are broken and conducted, the chips are prevented from being shredded to influence the normal cutting operation, the surface of the blade part is not required to be damaged, and the blade part keeps the due cutting strength.

Description

Technical Field

[0001] The utility model relates to the field of PCD blades, in particular to a chip removal type PCD blade. Background Technique

[0002] The PCD blade has a cutting edge part made of polycrystalline diamond material and is widely used in the precision machining of metal workpieces. When the flat PCD blade cuts metal, the chips generated by the cutting edge cannot be broken, forming ribbon-shaped chips or spiral-shaped chips, which are likely to cause entanglement of the tool and affect the normal progress of the cutting work. Based on the above problems, a chip breaking groove is opened on the surface of the PCD blade, and the cutting enters the chip breaking groove, breaks and is discharged, effectively improving the problem that continuous chips interfere with the cutting work;

[0003] However, the existing chip breaking methods for PCD tools are all to open chip breaking grooves on the surface of the cutting edge, which not only has a large processing difficulty, but also reduces the strength of the cutting edge part. Content of the Utility Model

[0004] The purpose of the utility model is to provide a chip removal type PCD blade to solve the following problems existing in the prior art: how to ensure that the PCD blade has a high-strength cutting edge while having chip breaking and chip removal effects.

[0005] In order to solve the problems existing in the prior art, the technical scheme adopted by the utility model is as follows:

[0006] A chip removal type PCD blade, including a blade substrate, and a cutting edge part is arranged at the tip of the blade substrate;

[0007] A tongue plate is arranged on the surface of the cutting edge part, the tip of the tongue plate points to the tip of the cutting edge part, the tip of the cutting edge part and the cutting areas on both sides protrude from the tip and the side edges of the tongue plate, and the two side edges of the tongue plate are inclined inwards from top to bottom, so that a chip breaking area with a triangular cross-section is formed between the edge of the tongue plate and the cutting edge part.

[0008] Preferably, the included angle between the edge of the tongue plate and the cutting edge part is 45° - 70°.

[0009] Preferably, the included angle between the edge of the tongue plate and the cutting edge part is 60°.

[0010] Preferably, a plurality of guide grooves are opened on the inclined edge of the tongue plate, and the guide grooves are inclined from bottom to top towards the tip of the cutting edge part.

[0011] Preferably, the tongue plate has a part overlapping the blade substrate, and the tongue plate is fixedly connected to the blade substrate by screws.

[0012] Preferably, the tip of the cutting edge part is upturned.

[0013] Preferably, the middle part of the blade substrate has a mounting hole.

[0014] Compared with the related technologies, the utility model has the following beneficial effects:

[0015] The surface of the cutting edge part of the utility model is covered with a tongue plate. A chip-breaking area with an inclined surface is formed between the side edge of the tongue plate and the cutting edge part to break and conduct the chip, avoiding the chip becoming filamentous and affecting the normal progress of the cutting work. There is no need to damage the surface of the cutting edge part, so that the cutting edge part maintains the due cutting strength. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the installation of the tongue plate of the utility model.

[0018] Reference numerals: 1, blade substrate; 2, cutting edge part; 3, tongue plate; 4, guide groove. Detailed Embodiment

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the following further details the utility model with reference to the drawings and embodiments.

[0020] As Figure 1 、 Figure 2 shown, for the chip-discharging type PCD blade, the blade substrate 1 can be in the shape of a polygon such as a quadrilateral or a triangle. The tip part of the blade substrate 1 sinks, the cutting edge part 2 is arranged at the tip part of the blade substrate 1, and the tip of the cutting edge part 2 is upturned. An installation hole is opened in the middle of the blade substrate 1, and the blade substrate 1 can be fixedly connected to the tool holder through the installation hole. The tip of the cutting edge part 2 points to the machining area.

[0021] The tongue plate 3 is arranged on the surface of the cutting edge part 2. The tip of the tongue plate 3 points to the tip of the cutting edge part 2, and the tip of the cutting edge part 2 and the cutting areas on both sides protrude from the tip and the side edge of the tongue plate 3 to avoid the tongue plate 3 from hindering the cutting edge part 2 from contacting and cutting the workpiece;

[0022] The two side edges of the tongue plate 3 are inclined inwards from top to bottom, so that a chip-breaking area with a triangular cross-section is formed between the edge of the tongue plate 3 and the cutting edge part 2. The included angle between the edge of the tongue plate 3 and the cutting edge part 2 is 45° - 70°, and the included angle of 60° is preferably selected.

[0023] Both sides of the tip of the cutting edge part 2 can perform fine machining cutting on the metal workpiece. The chip is introduced into the chip-breaking area from the edge of the cutting edge part 2. The chip is broken by the resistance of the inclined surface of the chip-breaking area and flies out along the inclined surface, effectively avoiding the chip becoming filamentous.

[0024] The inclined edge of the tongue plate 3 is provided with a plurality of guide grooves 4. The guide grooves 4 incline from bottom to top towards the tip of the cutting edge portion 2. The guide grooves 4 are located on the inclined surface of the chip breaking area. The arrangement of the guide grooves 4 increases the complexity of the inclined surface of the chip breaking area, further promoting chip fracture. Moreover, the guide grooves 4 are used to conduct chips towards the workpiece direction, reducing the splashing of chips towards the tool direction.

[0025] The whole of the tongue plate 3 is triangular in shape. The tail end of the tongue plate 3 has a part that coincides with the blade base body 1. A hole is opened in the part of the tongue plate 3 that coincides with the blade base body 1. Screws are used to pass through the hole to fixedly connect the tongue plate 3 and the blade base body 1.

[0026] The tongue plate 3 is an independent part, which is convenient for processing, and it is also relatively convenient to replace the worn tongue plate 3 in the later stage.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip removal PCD insert, comprising: A blade base (1), wherein a cutting edge portion (2) is arranged at a tip of the blade base (1); A tongue plate (3) is arranged on the surface of the blade portion (2), the tip of the tongue plate (3) points to the tip of the blade portion (2), the tip of the blade portion (2) and the cutting areas on both sides protrude from the tip and side edges of the tongue plate (3), and the edges on both sides of the tongue plate (3) are inclined inward from top to bottom, so that a chip breaking area with a triangular cross-section is formed between the edge of the tongue plate (3) and the blade portion (2).

2. The chip removal PCD insert according to claim 1, characterized in that: The angle between the edge of the tongue plate (3) and the blade portion (2) is 45°-70°.

3. The chip removal PCD insert according to claim 2, characterized in that: The angle between the edge of the tongue plate (3) and the blade portion (2) is 60°.

4. The chip removal PCD insert according to claim 1, characterized in that: The bevel edge of the tongue plate (3) is provided with a plurality of guide grooves (4), and the guide grooves (4) are inclined from bottom to top toward the tip of the blade portion (2).

5. The chip removal PCD insert according to claim 1, characterized in that: The tongue plate (3) has a portion that overlaps the blade base (1), and the tongue plate (3) is fixedly connected to the blade base (1) by means of screws.

6. The chip removal PCD insert according to claim 1, characterized in that: The tip of the blade portion (2) is upturned.

7. The chip removal PCD insert according to claim 1, characterized in that: The blade base (1) has a mounting hole in the middle.

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