Non-standard reamer with R angle at root

Abstract

The utility model discloses a non-standard reamer with an angle R at the root. The non-standard reamer comprises a reamer rod, and a reamer handle is arranged below the reamer rod. A cutting blade is installed below the cutter handle, an R angle is arranged at the end of the cutting blade, an arc-shaped groove is formed in the cutter handle, a heat dissipation groove is formed in the cutter handle, the arc-shaped groove is communicated with the heat dissipation groove, the heat dissipation groove is annularly formed, and an auxiliary assembly is installed on the outer side of the heat dissipation groove. According to the non-standard reamer with the R angle at the root, the arranged cutting blades can be conveniently matched with the reamer handle for machining, machining can be conducted at the same time through the non-standard design of reaming and back chipping, the problem that the service life is shortened due to inconsistent abrasion speeds is solved, and the problem that the maintenance cost is increased due to separate treatment of the cutting edges is solved; the R angle on the cutting piece can be conveniently reamed and formed, the problem that the overall machining time is prolonged due to the fact that a tool needs to be replaced is solved, and the problem that existing tool connecting marks are troublesome to process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to reamer, in particular to a non-standard reamer with an R angle at the root. Background Art

[0002] In the production process of new energy motor end caps, it is necessary to perform hole opening operations, and most of the existing hole openings use reamer, which is a rotating tool with one or more teeth for removing a thin layer of metal on the surface of the processed hole. However, the existing reamer still has certain defects when used;

[0003] When using a reamer for machining, since the cutting tool is subjected to force on one side, the tool is prone to deflect to one side as the force on the tool is applied during the single-sided machining process, which can easily cause the machined hole to be elliptical or trumpet-shaped, thereby reducing the machining accuracy of the workpiece as a whole and causing great inconvenience to the hole-breaking machining of the workpiece;

[0004] In order to overcome the above-mentioned defects, prior art 1 (Chinese patent with application number 201922146913.5 and application date 2019-12-04) is a reamer for processing holes in automotive parts, wherein a first PCD blade and a second PCD blade are respectively welded on a first working section and a second working section, and the first PCD blade and the second PCD blade cutting edges are wear-resistant and have good resistance to heavy impact; a plurality of super-hard alloy guide strips are welded on the outer peripheral surface of the second working section and evenly spaced along its circumferential direction, and the super-hard alloy guide strips can increase the rigidity of the working part when processing semicircular holes, and can play a guiding and supporting role when processing intersecting holes; another one, the second PCD blade is symmetrically arranged on both sides of the front end of the second working section, which can reduce the resonance phenomenon caused by multi-blade cutting and avoid the generation of vibration marks on the hole wall when processing the workpiece;

[0005] Although the existing technology can complete the drilling operation, during the working process, the first PCD blade and the second PCD blade are respectively welded on the first working section and the second working section for use. Since the wear rates of the first PCD blade and the second PCD blade may be different, the tools need to be frequently adjusted or replaced, which leads to a reduction in the overall service life. In addition, the overall replacement is inconvenient and the two sections of the blade need to be handled separately, which increases the complexity of maintenance and operation, and increases the cost and management difficulty of the tools.

[0006] In view of the above problems, it is urgent to carry out innovative design based on the original non-standard reamer with R angle at the root. Therefore, we proposed that the non-standard reamer with R angle at the root can solve the above problems well. Utility Model Content

[0007] The purpose of the present utility model is to provide a non-standard reamer with an R angle at the root, so as to solve the problems raised in the above-mentioned background technology. Currently, on the market, a first PCD cutting edge and a second PCD cutting edge are respectively welded on the first working section and the second working section for use. Since the wear rates of the first PCD cutting edge and the second PCD cutting edge may be different, it is necessary to frequently adjust or replace the tool, resulting in a reduction in the overall service life. Moreover, the overall replacement is inconvenient, and the cutting edges of the two sections need to be processed separately, increasing the complexity of maintenance and operation, as well as the cost and management difficulty of the tool.

[0008] To achieve the above purpose, the present utility model provides the following technical solutions: A non-standard reamer with an R angle at the root, including a provided tool shank, and a tool holder is arranged under the tool shank;

[0009] A cutting blade is installed under the tool holder, and an R angle is arranged at the end of the cutting blade.

[0010] Preferably, an arc-shaped groove is opened inside the tool holder, and a heat dissipation groove is opened inside the tool holder.

[0011] Preferably, the arc-shaped groove is communicated with the heat dissipation groove, and the heat dissipation groove is opened in a ring shape.

[0012] Preferably, an auxiliary component is installed outside the heat dissipation groove, and the auxiliary component includes a connecting rod installed outside the heat dissipation groove.

[0013] Preferably, one end of the connecting rod is connected inside the tool holder, and a spring is sleeved outside the connecting rod.

[0014] Preferably, the other end of the connecting rod is connected with a protective plate, and the protective plate is arranged inside a protective groove.

[0015] Preferably, the protective groove is opened on the tool holder, and the protective groove is opened in a ring shape.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this non-standard reamer with an R angle at the root, the provided cutting blade is convenient for cooperating with the tool holder for processing. Through the non-standard design of reaming and root cleaning, processing can be carried out simultaneously, reducing the problem of reduced service life caused by inconsistent wear rates, and reducing the problem of increased maintenance costs caused by separately processing the cutting edges. The R angle on the cutting blade is convenient for reaming and forming the R angle, not only reducing the problem of increased overall processing time caused by tool replacement, but also reducing the problem that the existing tool joint marks are troublesome to process. The specific content is as follows:

[0017] (1) The provided cutting blade is convenient for cooperating with the tool holder for processing. Through the non-standard design of reaming and root cleaning, it not only reduces the problem of reduced service life caused by inconsistent wear rates, but also reduces the problem of increased maintenance costs caused by separately processing the cutting edges;

[0018] (2) The tool holder provided under the tool bar generates heat during high-speed rotation. Heat dissipation is carried out through the arc-shaped groove opened inside the tool holder, reducing the problem of reduced service life caused by high heat and improving the overall heat dissipation efficiency;

[0019] (3) The tool holder provided under the tool bar generates heat during high-speed rotation. The arc-shaped groove facilitates the flow of air. Since the arc-shaped groove is connected to the opened heat dissipation groove, the heat inside the arc-shaped groove is conveniently and quickly dispersed, greatly improving the overall service life;

[0020] (4) When the tool holder rotates at high speed, the spring on the outer side of the connecting rod moves the protection plate, causing the protection plate to move out of the protection groove, facilitating the heat dissipation groove to transport the hot air inside the arc-shaped groove, and improving the overall heat dissipation efficiency;

[0021] (5) After the tool holder stops rotating, the spring rebounds to drive the protection plate to move, facilitating the protection plate to be clamped inside the protection groove, not only reducing the damage problem caused by the influence of the external environment, but also reducing the blockage problem caused by dust entering the heat dissipation groove. Description of the Drawings

[0022] Figure 1 It is a schematic side view structure diagram of the whole utility model;

[0023] Figure 2 It is the Figure 1 schematic enlarged structure diagram of part A in the utility model;

[0024] Figure 3 It is a schematic structure diagram of the whole utility model;

[0025] Figure 4 It is a schematic structure diagram when the whole utility model is in use;

[0026] Figure 5 It is a schematic structure diagram of the tool holder and the heat dissipation groove of the utility model;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of the tool holder of the utility model in the horizontal direction;

[0028] Figure 7 It is a schematic bottom-up structure diagram after the tool holder of the utility model is sectioned.

[0029] In the figure: 1. Tool bar; 2. Tool holder; 3. Cutting blade; 4. R corner; 5. Arc-shaped groove; 6. Heat dissipation groove; 7. Connecting rod; 8. Spring; 9. Protection plate; 10. Protection groove. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1:

[0032] In this embodiment, in order to improve the overall service life, it is used through the provided cutting blade 3, and the purpose is to reduce the problem of reduced service life caused by inconsistent wear rates, such as Figure 1 and Figure 2 The shown technical solution includes a provided tool shank 1. A tool holder 2 is arranged below the tool shank 1, a cutting blade 3 is installed below the tool holder 2, an R corner 4 is arranged at the end of the cutting blade 3. A tool holder 2 is arranged below the tool shank 1, and processing can be carried out through the tool holder 2, which is convenient for producing the end cover of a new energy motor. The provided cutting blade 3 is convenient for cooperating with the tool holder 2 for processing. Through the non-standard design of reaming and root clearing, processing can be carried out simultaneously, reducing the problem of reduced service life caused by inconsistent wear rates, and reducing the problem of increased maintenance costs caused by separately processing the cutting edges. The R corner 4 on the cutting blade 3 is convenient for reaming and forming the R corner 4, not only reducing the problem of increased overall processing time caused by the need to change tools, but also reducing the problem that the existing tool joint marks are troublesome to process.

[0033] Embodiment 2:

[0034] In this embodiment, in order to improve the overall heat dissipation efficiency, it is used in cooperation through the provided arc-shaped groove 5 and the heat dissipation groove 6, and the purpose is to reduce the problem of reduced service life caused by high heat, specifically as Figure 3 and Figure 7 shown. An arc-shaped groove 5 is opened inside the tool holder 2, a heat dissipation groove 6 is opened inside the tool holder 2, the arc-shaped groove 5 is communicated with the heat dissipation groove 6, and the heat dissipation groove 6 is annularly opened. Heat will be generated during the high-speed rotation of the tool holder 2 arranged below the tool shank 1. At this time, heat dissipation is carried out through the arc-shaped groove 5 opened inside the tool holder 2, reducing the problem of reduced service life caused by high heat. The arc-shaped groove 5 is convenient for air circulation, reducing the problem of easy damage caused by uneven heat. And the arc-shaped groove 5 is communicated with the opened heat dissipation groove 6, making it convenient for the heat inside the arc-shaped groove 5 to be quickly dispersed, improving the overall heat dissipation efficiency and greatly increasing the overall service life.

[0035] Embodiment 3:

[0036] In this embodiment, in order to improve the overall practicability, it is used through the provided auxiliary components, aiming to reduce the problem of structural damage caused by external environmental influences. Specifically, as Figures 3 - 7 shown, an auxiliary component is installed outside the heat dissipation groove 6. The auxiliary component includes a connecting rod 7 installed outside the heat dissipation groove 6. One end of the connecting rod 7 is connected inside the tool handle 2. A spring 8 is sleeved outside the connecting rod 7. The other end of the connecting rod 7 is connected to a protection plate 9. The protection plate 9 is arranged inside a protection groove 10. The protection groove 10 is opened on the tool handle 2. The protection groove 10 is annularly opened. When the tool handle 2 rotates at a high speed, the spring 8 outside the connecting rod 7 moves the protection plate 9, so that the protection plate 9 moves out of the protection groove 10, facilitating the heat dissipation groove 6 to convey the hot air inside the arc groove 5, improving the overall heat dissipation efficiency. And when the tool handle 2 stops rotating, the spring 8 rebounds to drive the protection plate 9 to move, facilitating the protection plate 9 to be clamped inside the protection groove 10, reducing the damage problem caused by external environmental influences, reducing the problem of dust entering the heat dissipation groove 6 and causing blockage, and improving the overall practicability of the device. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A non-standard reamer with an R angle at the root, comprising a tool bar (1), wherein a tool handle (2) is arranged under the tool bar (1); It is characterized in that Also includes: A cutting blade (3) is installed under the tool handle (2), and an R angle (4) is provided at the end of the cutting blade (3).

2. The non-standard reamer with R angle at the root according to claim 1, characterized in that: An arc groove (5) is provided inside the knife handle (2), and a heat dissipation groove (6) is provided inside the knife handle (2).

3. The non-standard reamer with R angle at the root according to claim 2, characterized in that: The arc-shaped groove (5) is connected to the heat dissipation groove (6), and the heat dissipation groove (6) is opened in a ring shape.

4. The non-standard reamer with R angle at the root according to claim 3, characterized in that: An auxiliary component is installed outside the heat dissipation groove (6), and the auxiliary component comprises a connecting rod (7) installed outside the heat dissipation groove (6).

5. The non-standard reamer with R angle at the root according to claim 4, characterized in that: One end of the connecting rod (7) is connected to the inside of the knife handle (2), and a spring (8) is sleeved on the outside of the connecting rod (7).

6. The non-standard reamer with R angle at the root according to claim 5, characterized in that: The other end of the connecting rod (7) is connected to a protective plate (9), and the protective plate (9) is arranged inside the protective groove (10).

7. The non-standard reamer with R angle at the root according to claim 6, characterized in that: The protection groove (10) is formed on the knife handle (2), and the protection groove (10) is formed in a ring shape.

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