Multi-edge reamer

Abstract

A cutting part comprises a plurality of main cutting edge belts and a plurality of auxiliary cutting edge belts, the main cutting edge belts evenly surround the edge of the end face of a cutter neck at intervals and form a main cutter tooth on the edge of the end face, and an auxiliary cutting edge belt is arranged between every two adjacent main cutting edge belts. The distance between each main cutter tooth and the edge of the end face of the cutter neck is smaller than the distance between each auxiliary cutter tooth and the edge of the end face of the cutter neck, the number of the main cutting edges is four, the number of the auxiliary cutting edges is four, the edge is formed, eight-edge-band reaming is formed, the cutting speed is increased, and the cutting efficiency is improved. The connecting positions of each main cutting edge belt and each auxiliary cutting edge belt and the edge of the end face of the cutter neck are all chamfered, the machining surface precision is improved, the cutting edge strength is improved, and abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of precision machining, and more specifically, to a multi-edge reamer. Background Art

[0002] A reamer is a rotary cutting tool with one or more cutting teeth used to remove a thin layer of metal from the surface of a machined hole. The reamer is a rotary finishing tool with a straight edge or a spiral edge, used for enlarging or reaming a hole.

[0003] Among the prior art, the reamer closest to the present application is the one with the publication number: CN202037379U, a deep-hole machining drill reamer, which discloses a tool shank and a cutting edge located at the end of the tool shank. Among them, the cutting edge includes a spiral groove, a land, and a drill tip. The land is located at the side top of the spiral groove, and the drill tip is located at the end of the land. The spiral groove is composed of a main spiral groove and a secondary spiral groove, and the main spiral groove and the secondary spiral groove are connected by a land in a transitional manner.

[0004] The existing tool only has 4 lands, with a small chip space, low cutting efficiency, a sharp cutting edge, a high cutting force and easy tool breakage, and low machining accuracy.

[0005] In view of this, the utility model proposes a multi-edge and high-precision multi-edge reamer. Summary of the Utility Model

[0006] The purpose of the utility model is to propose a multi-edge and high-precision multi-edge reamer.

[0007] A multi-edge reamer includes a tool shank 1, a neck 2, and a cutting part 3. One end of the tool shank 1 is coaxially connected to the neck 2, and the cutting part 3 is provided at the end of the neck 2 away from the tool shank 1. The cutting part 3 is used for cutting operations. Its characteristics are as follows: The cutting part 3 includes a plurality of main cutting lands 4 and a plurality of secondary cutting lands 5. The plurality of main cutting lands 4 are evenly spaced around the edge of the end face of the neck 2 and form a main cutting tooth 8 at the edge of the end face. A secondary cutting land 5 is provided between adjacent main cutting lands 4. Each secondary cutting land 5 and the edge of the end face of the neck 2 form a secondary cutting tooth 9. The distance between each main cutting tooth 8 and the edge of the end face of the neck 2 is less than the distance between each secondary cutting tooth 9 and the edge of the end face of the neck 2.

[0008] Further, there are 4 main cutting lands 4 and 4 secondary cutting lands 5, forming 8 edges. The multi-edges perform cutting with higher stability.

[0009] In some embodiments, the main cutting lands 4 and the secondary cutting lands 5 have the same diameter.

[0010] In some embodiments, each main cutting edge band 4 and each secondary cutting edge band 5 are rounded at the connection with the end face edge of the tool neck 2. The rounding facilitates chip evacuation, reduces cutting resistance, avoids vibration during machining, and thus improves machining accuracy.

[0011] Furthermore, the rounding angle is 12°.

[0012] In some embodiments, the difference in distance between each main cutting tooth 8 and the end face edge of the tool neck 2 and the distance between each secondary cutting tooth 9 and the end face edge of the tool neck 2 is 0.5 mm.

[0013] In some embodiments, the width of the main cutting edge band 4 is 0.3 mm - 0.35 mm.

[0014] In some embodiments, a main chip evacuation groove 6 and a secondary chip evacuation groove 7 are successively formed between each main cutting edge band 4 and a secondary cutting edge band 5.

[0015] In some embodiments, the depth of the main chip evacuation groove 6 is greater than the depth of the secondary chip evacuation groove 7.

[0016] Advantages of the present utility model: The present utility model provides a multi-edge reamer. The cutting part 3 includes a plurality of main cutting edge bands 4 and a plurality of secondary cutting edge bands 5. The plurality of main cutting edge bands 4 are evenly spaced around the end face edge of the tool neck 2 and form a main cutting tooth 8 at the end face edge. A secondary cutting edge band 5 is provided between adjacent main cutting edge bands 4. Each secondary cutting edge band 5 and the end face edge of the tool neck 2 form a secondary cutting tooth 9. The distance between each main cutting tooth 8 and the end face edge of the tool neck 2 is less than the distance between each secondary cutting tooth 9 and the end face edge of the tool neck 2. There are 4 main cutting edge bands 4 and 4 secondary cutting edge bands 5, forming an eight-edge reaming with eight edges, which improves the cutting speed. Each main cutting edge band 4 and each secondary cutting edge band 5 are rounded at the connection with the end face edge of the tool neck 2, improving the machining surface accuracy, increasing the cutting edge strength, and reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a multi-edge reamer of the present application.

[0018] Figure 2 is a partial structural schematic diagram of a multi-edge reamer of the present application.

[0019] MAIN ELEMENT SYMBOL DESCRIPTION

[0020] Tool shank 1, tool neck 2, cutting part 3, main cutting edge band 4, secondary cutting edge band 5, main chip evacuation groove 6, secondary chip evacuation groove 7, main cutting tooth 8, secondary cutting tooth 9.

[0021] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. SPECIFIC EMBODIMENTS

[0022] The following embodiments are described to assist in the understanding of the present application. The embodiments are not and should not in any way be construed as limiting the scope of protection of the present application.

[0023] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or integrated together (including being integrated within a single system or component).

[0024] Meanwhile, the connections between components or systems are not intended to be limited to direct connections. Instead, the data between these components may be modified, reformatted, or otherwise changed by intermediate components. Additionally, additional or fewer connections may be used. It should also be noted that the terms "coupled", "connected", or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections. Embodiment 1:

[0025] As Figure 1 shown, it is a schematic structural diagram of a multi-edge reamer of the present application; as Figure 2 shown, it is a schematic partial structural diagram of a multi-edge reamer of the present application.

[0026] A multi-edge reamer includes a tool shank 1, a tool neck 2, and a cutting part 3. One end of the tool shank 1 is coaxially connected to the tool neck 2, and the cutting part 3 is provided at the end of the tool neck 2 away from the tool shank 1. The cutting part 3 is used for cutting operations. Its characteristics are as follows: The cutting part 3 includes a plurality of main cutting edge bands 4 and a plurality of secondary cutting edge bands 5. The plurality of main cutting edge bands 4 are evenly spaced around the edge of the end face of the tool neck 2 and form a main cutting tooth 8 at the edge of the end face. A secondary cutting edge band 5 is provided between adjacent main cutting edge bands 4. Each secondary cutting edge band 5 and the edge of the end face of the tool neck 2 form a secondary cutting tooth 9. The distance between each main cutting tooth 8 and the edge of the end face of the tool neck 2 is less than the distance between each secondary cutting tooth 9 and the edge of the end face of the tool neck 2.

[0027] There are 4 main cutting edge bands 4 and 4 secondary cutting edge bands 5, forming 8 edges. The multi-edge bands perform cutting, and the stability is higher.

[0028] The main cutting edge bands 4 and the secondary cutting edge bands 5 have the same diameter.

[0029] At the connection of each main cutting edge band 4 and each secondary cutting edge band 5 with the edge of the end face of the tool neck 2, a fillet is provided. The fillet serves to facilitate chip evacuation, reduce cutting resistance, avoid vibration during the machining process, and thus improve the machining accuracy.

[0030] The fillet angle is 12°.

[0031] The distance between each main cutting tooth 8 and the end face edge of the tool neck 2 and the distance difference between each secondary cutting tooth 9 and the end face edge of the tool neck 2 is 0.5 mm.

[0032] The width of the main cutting edge band 4 is 0.3 mm - 0.35 mm.

[0033] Between each main cutting edge band 4 and a secondary cutting edge band 5, a main chip removal groove 6 and a secondary chip removal groove 7 are formed in sequence.

[0034] The depth of the main chip removal groove 6 is greater than the depth of the secondary chip removal groove 7.

[0035] The beneficial effects of the present utility model: The present utility model provides a multi-edge reamer. The cutting part 3 includes a plurality of main cutting edge bands 4 and a plurality of secondary cutting edge bands 5. The plurality of main cutting edge bands 4 are evenly spaced around the end face edge of the tool neck 2 and form a main cutting tooth 8 at the end face edge. A secondary cutting edge band 5 is provided between adjacent main cutting edge bands 4. Each secondary cutting edge band 5 and the end face edge of the tool neck 2 form a secondary cutting tooth 9. The distance between each main cutting tooth 8 and the end face edge of the tool neck 2 is less than the distance between each secondary cutting tooth 9 and the end face edge of the tool neck 2. There are 4 main cutting edge bands 4 and 4 secondary cutting edge bands 5, forming an eight-edge reaming with eight edges, improving the cutting speed. At the connection of each main cutting edge band 4, each secondary cutting edge band 5 and the end face edge of the tool neck 2, a fillet is provided, improving the machining surface accuracy, increasing the cutting edge strength, and reducing wear.

[0036] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only for illustrative purposes and are not intended to limit the present application. The actual protection scope of the present application is subject to the claims.

Claims

1. A multi-blade reamer, comprising a handle (1), a blade neck (2), and a cutting portion (3), wherein one end of the handle (1) is coaxially connected to the blade neck (2), and the end of the blade neck (2) away from the handle (1) is provided with the cutting portion (3), and the cutting portion (3) is used for cutting operation, characterized in that: The cutting portion (3) comprises a plurality of main cutting edge bands (4) and a plurality of secondary cutting edge bands (5). The plurality of main cutting edge bands (4) are evenly spaced around the end face edge of the blade neck (2) and form a main cutting tooth (8) on the end face edge. An secondary cutting edge band (5) is provided between adjacent main cutting edge bands (4). Each secondary cutting edge band (5) forms a secondary cutting tooth (9) with the end face edge of the blade neck (2). The distance between each main cutting tooth (8) and the end face edge of the blade neck (2) is smaller than the distance between each secondary cutting tooth (9) and the end face edge of the blade neck (2).

2. The multi-blade reamer according to claim 1, characterized in that: There are four main cutting edge bands (4) and four auxiliary cutting edge bands (5), forming eight edges. Cutting with multiple edge bands has higher stability.

3. The multi-blade reamer according to claim 1, characterized in that: The main cutting edge band (4) and the secondary cutting edge band (5) have the same diameter.

4. The multi-blade reamer according to claim 1, characterized in that: The connection points between each main cutting edge band (4), each secondary cutting edge band (5) and the end face edge of the blade neck (2) are all chamfered, and the chamfered corners facilitate chip removal, reduce cutting resistance, avoid vibration during machining, and thus improve machining accuracy.

5. The multi-blade reamer according to claim 4, characterized in that: The rounded angle is 12°.

6. The multi-blade reamer according to claim 1, characterized in that: The difference between the distance between each main blade tooth (8) and the end surface edge of the blade neck (2) and the distance between each auxiliary blade tooth (9) and the end surface edge of the blade neck (2) is 0.5 mm.

7. The multi-blade reamer according to claim 1, characterized in that: The width of the main cutting edge band (4) is 0.3 mm-0.35 mm.

8. The multi-blade reamer according to claim 1, characterized in that: A main chip removal groove (6) and a secondary chip removal groove (7) are sequentially formed between each main cutting edge band (4) and a secondary cutting edge band (5).

9. The multi-blade reamer according to claim 1, characterized in that: The depth of the main chip removal groove (6) is greater than the depth of the auxiliary chip removal groove (7).

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