CN221018954U

CN221018954U - Chamfering carving tool

Info

Publication number: CN221018954U
Application number: CN202322520143.2U
Authority: CN
Inventors: 滕飞; 邓范新
Original assignee: Hunan Flandy Tools Co ltd
Current assignee: Hunan Flandy Tools Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-05-28
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a chamfer engraving knife which comprises a knife handle and a knife head. The tool bit sets up the front end of handle of a knife, the tool bit includes that the cross-section is from small to big front end chamfer portion and the cross-section is from big to small rear end chamfer portion, the global two cutting edges that are equipped with of tool bit are equipped with, two be equipped with the holding groove between the cutting edge, two the cutting edge extends to the terminal surface of front end chamfer portion forms two chisel edge, two chisel edge is the S-shaped and distributes, two the holding groove is in the terminal surface of front end chamfer portion is also the S-shaped and distributes. Because the two blades extend to the end face of the front end chamfer part to form two chisel edges which are distributed in an S shape, the two accommodating grooves are also distributed in the S shape on the end face of the front end chamfer part, and an S-shaped chisel edge grinding mode is used on the end face structure of the front end chamfer part, so that the bottom of the blade is ensured to have enough strength; rigidity and good cutting sharpness, make the cutting more steady, avoid the impact and the vibrations of cutting edge to effectively avoid the centre of cutting edge bottom to break up the sword.

Description

Chamfering carving tool

Technical Field

The utility model relates to the field of numerical control cutters, in particular to a chamfering carving tool.

Background

At present, a chamfering and engraving cutter for integrally processing aluminum alloy chamfer angles is commonly used for forming a single straight groove and a common tooth gap structure. The structure is simple and efficient, but the overall strength and rigidity of the cutter are poor, and the common processing life is too short and unstable. In the use process, the phenomenon that the cutting edge of a cutter is easy to collapse, especially when the bottom edge is used as carving, the cutting force and strength of the bottom edge are insufficient, and the whole cutting edge of the bottom edge is collapsed or even the cutter head is broken due to overlarge cutting resistance is common.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the chamfering carving tool, which ensures that the bottom of the cutting edge has enough strength, rigidity and good cutting sharpness, so that the cutting is more stable, the impact and vibration of the cutting edge are avoided, and the center tipping of the bottom of the cutting edge is effectively avoided.

The technical scheme adopted for solving the technical problems is as follows:

A chamfer engraving knife, comprising

A knife handle;

The tool bit is arranged at the front end of the tool handle, the tool bit comprises a front end chamfering part with a cross section from small to large and a rear end chamfering part with a cross section from large to small, two blades are arranged on the peripheral surface of the tool bit, a containing groove is formed between the two blades, the two blades extend to the end face of the front end chamfering part to form two chisel edges, the two chisel edges are distributed in an S shape, and the two containing grooves are also distributed in an S shape on the end face of the front end chamfering part.

The chamfering carving tool provided by the embodiment of the utility model has at least the following beneficial effects: because the terminal surface that two cutting edges extended to front end chamfer portion forms two chisel edges, two chisel edges are S-shaped and distribute, and two holding grooves are in the terminal surface of front end chamfer portion also is S-shaped and distributes, use S-shaped chisel edge coping mode on the terminal surface structure of front end chamfer portion, it has sufficient intensity, rigidity and good cutting sharpness to guarantee the cutting edge bottom, makes the cutting more steady, avoids the impact and the vibrations of cutting edge to effectively avoid cutting edge bottom center to collapse.

According to some embodiments of the utility model, the chisel edge is 0.04 to 0.06mm in length.

The beneficial effects are that: the cutting resistance of the end face center point of the front end chamfer portion can be reduced, and the end face center of the front end chamfer portion can be provided with good strength.

According to some embodiments of the utility model, the chisel edge has a chisel edge angle θ of 67 ° to 73 °.

The beneficial effects are that: the cutting force can be decomposed into axial and radial component force when the bottom edge is engraved, so that the radial cutting force is reduced, the cutting heat generated in the cutting process is reduced, the wear resistance of the bottom edge is well protected, and the service life of the cutter is prolonged.

According to some embodiments of the utility model, the chisel edge has an eccentricity s of 0.24mm.

The beneficial effects are that: the full sole edge is considered to remove chips fully, and meanwhile, the eccentricity s of 0.24mm can well ensure the integral strength of the sole edge.

According to some embodiments of the utility model, a bilateral distance m from a side of the two accommodating grooves perpendicular to the chisel edge to a center of the front chamfer end face is 0.16mm.

The beneficial effects are that: such a distance allows the end face of the front chamfer to have a larger chip space.

According to some embodiments of the utility model, the blade edge is provided with a reinforcing surface, the width of which is 0.005-0.015 mm.

The beneficial effects are that: therefore, the side blade tip can be effectively protected, and the tool failure caused by tipping at the side blade tip is avoided.

According to some embodiments of the utility model, the nose chamfer section has a rake angle α of the sipe of 12 ° to 14 °.

The beneficial effects are that: therefore, the cutting is light and quick, and the generation of cutting heat is reduced, so that the whole service life of the cutter is prolonged.

According to some embodiments of the utility model, the front chamfer section has a first planar relief angle β1 of 11 ° to 13 ° and a second planar relief angle β2 of 24 ° to 26 ° in sequence.

The beneficial effects are that: the double-plane relief angle design is adopted, so that the cutting edge has good sharpness under the condition that the whole rigidity and strength of the peripheral edge are not affected, the cutting is light, fast and stable, the generation of cutting heat is effectively avoided, and meanwhile, the problem that the cutting edge sticks to scraps is also well avoided.

According to some embodiments of the utility model, the helix angle of the receiving groove at the rear chamfer is 30 °.

The beneficial effects are that: therefore, the cutter can make full use of the advantages of stable cutting and sharp cutting of the accommodating groove in the use process, and the vibration, impact and cutting heat of the cutter are reduced in the cutting process.

According to some embodiments of the utility model, the core diameter d of the cutter head is 0.4 times the maximum cross-sectional diameter of the cutter head.

The beneficial effects are that: the accommodating groove has good chip removal space while having good integral rigidity and strength of the cutter.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is an end view of the front chamfer of FIG. 2;

FIG. 4 is an enlarged schematic view at B in FIG. 3;

fig. 5 is a schematic cross-sectional view of the front chamfer of fig. 2.

Reference numerals: shank 100, head 110, front end chamfer 120, rear end chamfer 130, blade 140, pocket 150, chisel edge 160, chisel edge angle θ, eccentricity s, double-sided distance m, reinforcing face 170, rake angle α, first planar relief angle β1, second planar relief angle β2, core diameter d.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that, with respect to the description of the orientation, such as the orientation or positional relationship indicated above, below, front, rear, left, right, etc., the orientation or positional relationship shown in the drawings is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific orientation; constructed and operated in a particular orientation and therefore should not be construed as limiting the utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A chamfer-type graver is described in detail below in a specific embodiment with reference to fig. 1-5. It is to be understood that the following description is exemplary only and is not intended to limit the utility model in any way.

As shown in fig. 1-3, a chamfer-engraving tool includes a shank 100 and a tool bit 110.

Wherein, tool bit 110 sets up in the front end of handle of a knife 100, and tool bit 110 includes front end chamfer portion 120 that the cross-section is from small to big and rear end chamfer portion 130 that the cross-section is from big to small, and the global two cutting edges 140 that are equipped with of tool bit 110 are equipped with holding groove 150 between two cutting edges 140, and two cutting edges 140 extend to the terminal surface of front end chamfer portion 120 and form two chisel edges 160, and two chisel edges 160 are the S-shaped and distribute, and two holding groove 150 are the terminal surface of front end chamfer portion 120 also to be the S-shaped and distribute. Because the two blades 140 extend to the end face of the front end chamfering part 120 to form two chisel edges 160, the two chisel edges 160 are distributed in an S shape, the two accommodating grooves 150 are also distributed in an S shape on the end face of the front end chamfering part 120, and the S-shaped chisel edges 160 grinding mode is used on the end face structure of the front end chamfering part 120, so that the bottom of the blade 140 is ensured to have enough strength, rigidity and good cutting sharpness, the cutting is more stable, the impact and vibration of the cutting edge are avoided, and the center of the bottom of the blade 140 is effectively avoided.

Specifically, as shown in fig. 3 and 4, the chisel edge 160 has a length of 0.04 to 0.06mm. The cutting resistance of the end face center point of the front end chamfer portion 120 can be reduced while having good strength at the end face center of the front end chamfer portion 120. The chisel edge 160 has a chisel edge angle θ of 67 ° to 73 °. The cutting force can be decomposed into axial and radial component force when the bottom edge is engraved, so that the radial cutting force is reduced, the cutting heat generated in the cutting process is reduced, the wear resistance of the bottom edge is well protected, and the service life of the cutter is prolonged. Further, the eccentricity s of the chisel edge 160 is 0.24mm. The full sole edge is considered to remove chips fully, and meanwhile, the eccentricity s of 0.24mm can well ensure the integral strength of the sole edge.

As shown in fig. 4, the bilateral distance m from the side of the two accommodating grooves 150 perpendicular to the chisel 160 to the center of the end face of the front end chamfer 120 is 0.16mm. Such a distance allows the end face of the front chamfer 120 to have a larger chip space.

As shown in fig. 2, the blade 140 is provided with a reinforcing surface 170, and the width of the reinforcing surface 170 is 0.005 to 0.015mm. Therefore, the side blade tip can be effectively protected, and the tool failure caused by tipping at the side blade tip is avoided.

As shown in fig. 5, the cross section of the front chamfer 120 has a rake angle α of 12 ° to 14 °. Therefore, the cutting is light and quick, and the generation of cutting heat is reduced, so that the whole service life of the cutter is prolonged. The front end chamfer 120 has a first planar relief angle β1 of 11 ° to 13 ° and a second planar relief angle β2 of 24 ° to 26 ° in this order. The double-plane relief angle design is adopted, so that the cutting edge has good sharpness under the condition that the whole rigidity and strength of the peripheral edge are not affected, the cutting is light, fast and stable, the generation of cutting heat is effectively avoided, and meanwhile, the problem that the cutting edge sticks to scraps is also well avoided.

It should be noted that, the helix angle of the accommodating groove 150 at the rear end chamfering portion 130 is 30 °. In this way, the accommodating groove 150 can be fully utilized to have the advantages of stable cutting and sharp cutting in the using process of the cutter, and the vibration, impact and cutting heat of the cutter are reduced in the cutting process. Further, as shown in fig. 5, the core diameter d of the cutter head 110 is 0.4 times the maximum cross-sectional diameter of the cutter head 110. The receiving groove 150 has good chip removing space while having good overall rigidity and strength of the tool.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A chamfer-engraving knife, comprising:

A shank (100);

Tool bit (110) are arranged at the front end of handle of a knife (100), tool bit (110) are including cross-section by little to big front end chamfer portion (120) and cross-section by big to little rear end chamfer portion (130), the global two cutting edges (140) that are equipped with of tool bit (110), two be equipped with accommodation groove (150) between cutting edges (140), two cutting edges (140) extend to the terminal surface of front end chamfer portion (120) forms two chisel edge (160), two chisel edge (160) are S-shaped distribution, two accommodation groove (150) are in the terminal surface of front end chamfer portion (120) is S-shaped distribution too.

2. The chamfer graver according to claim 1, wherein the chisel edge (160) has a length of 0.04 to 0.06mm.

3. The chamfer graver according to claim 1, wherein the chisel edge (160) has a chisel edge angle (θ) of 67 ° to 73 °.

4. The chamfer-engraving knife according to claim 1, characterized in that the eccentricity(s) of the chisel edge (160) is 0.24mm.

5. The chamfer engraving knife according to claim 1, characterized in that the bilateral distance (m) from the edge of two of said receiving grooves (150) perpendicular to said chisel edge (160) to the center of the end face of said front chamfer (120) is 0.16mm.

6. The chamfer engraving knife according to claim 1, characterized in that said blade (140) is provided with a reinforcing surface (170), said reinforcing surface (170) having a width of 0.005-0.015 mm.

7. The chamfer-engraving knife according to claim 1, characterized in that the front chamfer section (120) has a rake angle (α) of the sipe of 12 ° to 14 °.

8. The chamfer-engraving knife according to claim 1, characterized in that the front chamfer (120) section has in sequence a first planar relief angle (β1) of 11 ° to 13 ° and a second planar relief angle (β2) of 24 ° to 26 °.

9. The chamfer graver according to claim 1, wherein the helix angle of the receiving groove (150) at the rear chamfer (130) is 30 °.

10. The chamfer-engraving knife according to claim 1, characterized in that the core diameter (d) of the cutting head (110) is 0.4 times the maximum cross-sectional diameter of the cutting head (110).