Fast feed cutting blade

Abstract

The utility model discloses a fast feed cutting blade which comprises a cutter body and a plurality of blade parts, a plurality of cutter body part blade placing base planes are arranged below the cutter body, the blade parts are fixed on the cutter body part blade placing base planes, the radial angles of the blade parts are negative angles after the blade parts are fixed, and the axial angles of the blade parts are positive angles. The blade part chip removal margin width is a, the blade part transition margin width is b, the blade part arc joint margin width is c, the blade part tool nose arc margin width is d, the blade part chip removal rake angle is s, the blade part transition rake angle is t, the blade part arc junction rake angle is x, the blade part tool nose rake angle is y, 0.05 mm < a < b < c < d < 0.8 mm, the angle value is in a gradual change trend, and s < t < x < y. The angle values are changed from 0 degree to 10 degrees when soft materials are machined, the angle values s, t, x and y are changed from-25 degrees to 0 degree when hard materials are machined, and the technical problems that in fast feed machining of an existing cutter, cutting resistance borne by a blade is very large, and impact strength is insufficient are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tools, and in particular relates to a fast-feed cutting blade. Background Art

[0002] When a higher feed rate is a priority in a machining process, we call it fast feed machining, specifically fast feed milling in milling. When machining with higher feed rates and medium depths of cut, less energy is consumed. Fast feed milling is a step towards energy-efficient or 'green' machining without sacrificing productivity.

[0003] For example, patent number CN202110683068 discloses a circular blade and its tool. It has a large radial negative angle and a large axial positive angle, and has very good chip removal performance. However, the tool has the following problems: On the one hand, during fast-feed processing, the cutting resistance of the blade is very large, so it is necessary to require the blade to have good impact resistance. On the other hand, during fast-feed processing, the blade needs to be slightly displaced due to the relatively large force. Therefore, it is necessary to develop a new fast-feed cutting tool that can overcome the above-mentioned defects to meet market demand. Utility Model Content

[0004] The utility model aims to provide a fast-feed cutting blade, which overcomes the shortcomings of the prior art and solves the technical problems of very large cutting resistance and insufficient impact resistance of the blade in fast-feed processing of the existing tool.

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] A fast-feed cutting blade comprises a cutter body and a plurality of blade parts, wherein a plurality of blade placement base surfaces of the cutter body are arranged below the cutter body, wherein the blade parts correspond to the blade placement base surfaces of the cutter body one by one, wherein a mounting hole is arranged in the middle of the blade parts, wherein the blade parts are fixed on the blade placement base surfaces of the cutter body through locking screws and the mounting holes, wherein the radial angle of the blade parts after being fixed is negative, the axial angle is positive, the chip removal edge band width of the blade parts is a, the transition edge band width of the blade parts is b, the arc intersection edge band width of the blade parts is c, the arc edge band width of the blade parts is d, the chip removal front angle of the blade parts is s, the transition front angle of the blade parts is t, the front angle at the arc intersection of the blade parts is x, the front angle of the blade parts is y, 0.05 mm < a < b < c < d < 0.8 mm, the stxy value is a gradual trend, wherein s < t < x < y, When processing soft materials, the s, t, x, y values ​​change at an angle of 0° to 10°, and when processing hard materials, the s, t, x, y values ​​change at an angle of -25° to 0°.

[0007] Furthermore, the blade portion is a triangular structure, which is an equilateral triangle. Each side of the upper end of the equilateral triangle is provided with a main cutting edge, and the main cutting edge is an arc-shaped structure protruding outward.

[0008] Furthermore, the negative angle is a large negative angle, and the large negative angle is -7° to 0°. The positive angle is a large positive angle, and the large positive angle is 0° to 7°. The large negative angle and the large positive angle can provide good chip removal performance.

[0009] Furthermore, the blade portion is a triangular structure, each side of the triangular structure is provided with a main cutting edge and a reinforcement diameter, each side of the triangular structure is provided with a chip groove on the inner side, and the bottom of the chip groove has a plurality of protrusions corresponding to the main cutting edge.

[0010] Furthermore, a positioning surface is provided on the side of the blade portion, and the positioning surface is perpendicular to a side of the blade body portion that is in contact with the base surface on which the blade is placed.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By strengthening the blade (controlling the STXY value and optimizing the blade tip strength), the blade structure is optimized based on the blade structure, and the blade's impact resistance is greatly improved; 2. The blade positioning surface is firmly positioned, which increases the blade's service life;

[0013] 2. The cutter body has a larger negative radial angle, and the steering angle is designed to be a large positive angle, which has the best chip evacuation performance;

[0014] 3. The blade is processed using fast feed, especially traditional face milling and cavity milling, to achieve higher production efficiency;

[0015] 4. A positioning surface is provided on the side of the blade, which is perpendicular to the side of the blade body that fits the base surface of the blade, thus solving the technical problem of slight displacement of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the exploded structure of a fast-feed cutting blade.

[0017] Figure 2 This is a schematic diagram of the structure of a fast-feed cutting blade after assembly.

[0018] Figure 3 It is a schematic diagram of the structure of a fast-feed cutting blade after assembly, viewed from above.

[0019] Figure 4 It is a schematic diagram of the structure of the blade part.

[0020] Figure 5 It is a schematic diagram of the local structure of the blade part.

[0021] Figure 6 It is a structural schematic diagram of the chip removal margin width of the blade and the chip removal front angle position of the blade.

[0022] Figure 7 It is a structural schematic diagram of the blade edge width and the blade transition front angle position.

[0023] Figure 8 It is a structural schematic diagram of the width of the blade arc intersection land and the front angle position at the intersection of the blade arc.

[0024] Fig. 9 It is a structural schematic diagram of the blade tip arc land width and the blade tip rake angle position. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] As shown in the figure, the fast-feed cutting blade of the utility model comprises a cutter body 1 and a plurality of blade parts 3. A plurality of blade placement base surfaces 2 of the cutter body are arranged below the cutter body. The blade parts 3 correspond to the blade placement base surfaces 2 of the cutter body one by one. A mounting hole is arranged in the middle of the blade parts 3. The blade parts 3 are fixed on the blade placement base surface 2 of the cutter body through locking screws 4 and the mounting holes.

[0027] Design 1: After the blade 3 is fixed, the radial angle 5 is negative, and the axial angle 6 is positive, which has good chip removal performance; the negative angle is -7° to 0°, and the positive angle is 0° to 7°. The cutter body has a larger negative radial angle, and the steering angle is designed to be a large positive angle, which has the best chip removal performance.

[0028] Design 2, the width of the blade chip removal edge band is a, the width of the blade transition edge band is b, the width of the blade arc intersection edge band is c, the width of the blade tip arc edge band is d, the blade chip removal rake angle is s, the blade transition rake angle is t, the rake angle at the intersection of the blade arc is x, the blade tip rake angle is y, 0.05mm<a<b<c<d<0.8mm, the stxy value is a gradual trend, among which s<t<x<y, the stxy value is 0°~10° when processing soft materials, and the s, t, x, y value is -25°~0° when processing hard materials; this design has increasing tip strength and stronger impact resistance; by strengthening the blade (controlling the STXY value, optimizing the tip strength), optimizing the blade structure based on the structure of the blade, the blade's impact resistance is greatly improved; 2. The blade positioning surface is firmly positioned, which increases the service life of the blade. Example

[0029] Furthermore, the blade portion 3 is a quasi-triangular structure, each side of the quasi-triangular structure is provided with a main cutting edge and a reinforcement diameter 31, and the inner side of each side of the quasi-triangular structure is provided with a chip groove, and the bottom of the chip groove has a number of protrusions 32, which correspond to the main cutting edge; a positioning surface 7 is provided on the side of the blade portion, and the positioning surface 7 is perpendicular to the side of the blade placement base surface of the tool body portion, and the reinforcing ribs further improve the impact resistance of the blade. At the same time, the positioning surface is perpendicular to the side of the blade placement base surface of the tool body portion to ensure that the blade portion is not easy to rotate, which solves the technical problem that the blade may have a slight displacement, and a chamfer is provided at the junction of the positioning surface and the side of the blade placement base surface of the tool body portion; the positioning surface transitions through a curved surface in the direction of the blade, and a positioning surface is provided on the side of the blade portion, and the positioning surface is perpendicular to the side of the blade placement base surface of the tool body portion to solve the technical problem that the blade may have a slight displacement.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fast-feed cutting blade, comprising a blade body and a plurality of blade parts, wherein a plurality of blade placement base surfaces of the blade body are arranged below the blade body, wherein the blade parts correspond to the blade placement base surfaces of the blade body one by one, wherein a mounting hole is arranged in the middle of the blade part, and the blade part is fixed to the blade placement base surface of the blade body through a locking screw and the mounting hole, wherein: After the blade is fixed, the radial angle is a negative angle, the axial angle is a positive angle, the chip removal edge band width of the blade is a, the transition edge band width of the blade is b, the arc intersection edge band width of the blade is c, the arc edge band width of the blade tip is d, the chip removal rake angle of the blade is s, the transition rake angle of the blade is t, the rake angle at the intersection of the arc of the blade is x, and the rake angle of the blade tip is y, the 0.05mm<a<b<c<d<0.8mm, the stxy value is a gradual trend, the stxy value is s<t<x<y, the s, t, x, y values ​​change angles of 0°~10° when processing soft materials, and the stxy values ​​change angles of -25°~0° when processing hard materials.

2. A fast feed cutting insert according to claim 1, characterized in that: The blade portion is a triangular structure, which is an equilateral triangle. Each side of the upper end of the equilateral triangle is provided with a main cutting edge, and the main cutting edge is an arc-shaped structure protruding outward.

3. A fast feed cutting insert according to claim 1, characterized in that: The negative angle is a large negative angle, and the magnitude of the large negative angle is -7° to 0°.

4. A fast feed cutting insert according to claim 1, characterized in that: The positive angle is a large positive angle, and the degree of the large positive angle is 0° to 7°.

5. A fast feed cutting insert according to claim 2, characterized in that: Each side of the triangular structure is provided with a main cutting edge and a reinforcement diameter, and the inner side of each side of the triangular structure is provided with a chip groove, and the bottom of the chip groove has a plurality of protrusions corresponding to the main cutting edge.

6. A fast feed cutting insert according to claim 2, characterized in that: A positioning surface is provided on the side of the lower end of the equilateral triangle, and the positioning surface is perpendicular to a surface of the cutter body part that is in contact with the base surface on which the blade is placed.

7. A fast feed cutting insert according to claim 6, characterized in that: A chamfer is provided at the junction of the positioning surface and a surface where the blade of the cutter body is placed in contact with each other.

8. A fast feed cutting insert according to claim 7, characterized in that: The positioning surface transitions through a curved surface toward the blade direction.

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