A replaceable grooving blade for machining pneumatic valve body parts

Abstract

The present invention discloses a replaceable grooving blade for machining pneumatic valve body parts, which includes a shank portion and a cutting edge portion. The cutting edge portion includes a grooving cutting edge portion and a chamfering cutting edge portion. The grooving cutting edge portion includes a bottom edge, a cutting edge protection portion, a first side edge, and a second side edge. The bottom edge is disposed at the foremost end of the cutting edge portion. The first side edge and the second side edge are oppositely disposed, and cutting edge protection portions are provided between the first side edge, the second side edge and the bottom edge. The bottom edge is provided with a first rake angle, a second rake angle and a clearance angle. The first side edge and the second side edge are provided with clearance angles. A first chip breaker groove is provided at the first rake angle, and a second chip breaker groove is provided at the second rake angle. Chip breaker grooves three and four are provided on the cutting surface formed by the bottom edge and the first side edge and the second side edge; the chamfering cutting edge portion includes a group of parallel chamfering edges, and the chamfering edge is adjacently disposed to the first side edge. It is a replaceable tool head, the dimensions of the machined parts are stable, the surface finish is good, and the two-stage chip breaker groove design of the grooving cutting edge portion and the chamfering cutting edge portion makes the chip shape more stable, so that the chip type is stable and not easy to entangle chips; it will not get stuck on the machined surface, is easy to discharge, and improves the yield rate.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting tools, and specifically, to a replaceable grooving blade for machining pneumatic valve body parts. Background Art

[0002] When machining pneumatic valve body parts, the existing machining process uses a standard grooving blade for machining. During machining, a forming program needs to be run. Since the groove to be machined is relatively narrow, as Figure 6 shown, debris is easily stuck in the groove and cannot be discharged. The subsequent manual chip removal is inefficient, and it is easy to damage the machined surface, resulting in a low finished product rate. Summary of the Invention

[0003] Object of the Invention: Aiming at the problems and deficiencies existing in the above-mentioned prior art, the object of the present invention is to provide a replaceable grooving blade for machining pneumatic valve body parts.

[0004] Technical Solution: To achieve the above object, a replaceable grooving blade for machining pneumatic valve body parts according to the present invention includes a shank portion and a cutting edge portion. The cutting edge portion includes a grooving cutting edge portion and a chamfering cutting edge portion. The grooving cutting edge portion includes a bottom edge, a cutting edge tip protection portion, a first side edge, and a second side edge. The bottom edge is disposed at the foremost end of the cutting edge portion. The first side edge and the second side edge are oppositely disposed. A cutting edge tip protection portion is provided between each of the first side edge, the second side edge, and the bottom edge. The bottom edge is provided with two bottom edge rake angles and a bottom edge clearance angle. The first side edge and the second side edge are provided with side edge clearance angles. Chip breaking grooves one and two are provided at two rake angle positions; chip breaking grooves three and four are provided on the cutting surface formed by the bottom edge, the first side edge, and the second side edge; the chamfering cutting edge portion includes a group of parallel chamfering edges, and the chamfering edge is disposed adjacent to the first side edge.

[0005] Further, both the first rake angle and the second rake angle are 15° - 25°, and the clearance angle is 10° - 15°.

[0006] Further, a concave rake angle is further provided on the bottom edge, and the concave rake angle is 5° - 10°. The design of the concave rake angle makes the chip shape curl towards the middle of the groove.

[0007] Further, the cutting edge tip protection portion is arc-shaped.

[0008] Further, the angle formed by the chamfering edge and the horizontal central axis is 58° - 62°.

[0009] Further, it is 1° - 4°, and a clearance of 1° - 3° is provided on both the first side edge and the second side edge. The design of the clearance angles on both side edges ensures the service life of the cutting tool, and the 1° - 3° clearance design on both side edges ensures no interference with the groove wall and guarantees the surface finish.

[0010] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0011] A replaceable grooving blade for machining pneumatic valve body parts according to the present invention is a replaceable tool head. The machined part has stable dimensions and good surface finish. The design of two chip-breaking grooves on the grooving edge and chamfering edge makes the chip shape more stable, so that the chip type is stable and not easy to entangle chips; it will not get stuck on the machined surface, is easy to discharge, and improves the processing efficiency and yield of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the present invention;

[0013] Figure 2 It is a schematic diagram of the partial structure of the cutting edge of the present invention;

[0014] Figure 3 It is the rear view of the present invention;

[0015] Figure 4 It is the left view of the present invention;

[0016] Figure 5 It is the installation schematic diagram of the present invention;

[0017] Figure 6 It is a partial structure diagram of the part to be machined. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be further clarified below with reference to the drawings and specific embodiments.

[0019] As Figures 1-4 shown, a replaceable grooving blade for machining pneumatic valve body parts includes a shank 1 and a cutting edge 2. The cutting edge includes a grooving edge and a chamfering edge. The grooving edge includes a bottom edge 21, a cutting edge tip protection part 22, a first side edge 23, and a second side edge 24. The bottom edge 21 is arranged at the forefront of the cutting edge 2. The first side edge 23 and the second side edge 24 are arranged oppositely. Chip-breaking grooves 261 and 262 are arranged at the first rake angle 212 and the second rake angle 212 respectively; chip-breaking grooves 263 and 264 are arranged on the cutting surface formed by the bottom edge 211, the first side edge 23, and the second side edge 24; the chamfering edge includes a group of parallel chamfering edges 25, and the chamfering edge 25 is arranged adjacent to the first side edge 23.

[0020] In this embodiment, the bottom edge front rake angle 211 is 15° - 25°, and the bottom edge rear rake angle 212 is 10° - 15°.

[0021] In this embodiment, a concave rake angle 213 is further provided on the bottom edge 21, and the concave rake angle 213 is 5°-10°.

[0022] In this embodiment, the edge protection part 22 is arc-shaped.

[0023] In this embodiment, the included angle formed by the chamfered edge 25 and the horizontal central axis is 58°-62°.

[0024] In this embodiment, the clearance angles of the first side edge 23 and the second side edge 24 are 1°-4°, and a clearance of 1°-3° is provided on both the first side edge 23 and the second side edge 24.

[0025] As Figure 5 shown, in use, the grooving turning tool blade is fixed on the tool, so that the chip shape curls towards the middle of the groove and will not get stuck on the machined surface; the grooving edge part and the chamfered edge part are designed with two chip-breaking grooves, making the chip shape more stable and not easily entangled; the rake angle is designed to be 15°-25°, which is more suitable for machining aluminum parts; the clearance angles of the two side edges are designed to be 1°-4°.

[0026] The embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalents of the present invention fall within the scope defined by the appended claims of this application.

Claims

1. A replaceable grooving blade for machining pneumatic valve body parts, characterized in that: It includes a handle part (1) and a blade part (2). The blade part includes a grooving blade part and a chamfering blade part. The grooving blade part includes a bottom blade (21), a blade tip protection part (22), a first side blade (23), and a second side blade (24). The bottom blade (21) is arranged at the foremost end of the blade part (2). The first side blade (23) and the second side blade (24) are oppositely arranged. Blade tip protection parts (22) are provided between the first side blade (23), the second side blade (24) and the bottom blade (21). The bottom blade (21) is provided with two bottom blade rake angles (211) and a bottom blade clearance angle (212). The first side blade (23) and the second side blade (24) are provided with side blade clearance angles (231). Chip breakage grooves one (261) and chip breakage grooves two (262) are arranged at the two bottom blade rake angles (211). Chip breakage grooves three (263) and chip breakage grooves four (264) are arranged on the blade surface formed by the bottom blade (21) and the first side blade (23), the second side blade (24). The chamfering blade part includes a group of parallel chamfering blades (25), and the chamfering blade (25) is adjacently arranged with the first side blade (23). The side blade clearance angles (231) of the first side blade (23) and the second side blade (24) are 1° to 4°, and a clearance of 1° to 3° is provided on both the first side blade (23) and the second side blade (24). The blade tip protection part (22) is arc-shaped.

2. The replaceable grooving blade for machining pneumatic valve body parts according to claim 1, characterized in that: The bottom blade rake angle (211) is 15° to 25°, and the bottom blade clearance angle (212) is 10° to 15°.

3. The replaceable grooving blade for machining pneumatic valve body parts according to claim 1, characterized in that: A concave rake angle (213) is further provided on the bottom blade (21), and the concave rake angle (213) is 5° to 10°.

4. The replaceable grooving blade for machining pneumatic valve body parts according to claim 1, characterized in that: The included angle formed by the chamfering blade (25) and the horizontal central axis is 58° to 62°.

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