Slotless reamer and machining tool

Abstract

The utility model discloses a kind of slotless reamer and processing tool, slotless reamer includes tool bit, the outside wall of tool bit has multiple plane structures, multiple plane structures are arranged along the circumference of tool bit, and cutting edge is formed between every two adjacent plane structures.This slotless reamer of the utility model is used, tool bit is inserted into hole, when slotless reamer rotates, cutting edge can process the hole wall of hole, to reach the purpose of hole expansion or hole repair, wherein, the debris produced by slotless reamer cutting can be temporarily stored in the area between plane structure and the hole wall of hole, debris is not easy to block this area, can reduce the risk of hole wall being scratched;In addition, the slotless reamer of the utility model does not need to set the slot structure on straight slot reamer or spiral slot reamer, and the overall structural strength is higher, the risk of vibration or chipping during use can be reduced;In addition, the slotless reamer of the utility model is simple to manufacture, and small-diameter reamer manufacturing can be realized.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and in particular to a grooveless reamer and machining tool. Background Technology

[0002] Figure 1 and Figure 2 Two traditional reamers are shown, in which, Figure 1 It is a straight flute reamer. Figure 2 Both types of reamers are spiral groove reamers, and both have chip removal grooves 10. Both types of reamers can achieve the purpose of hole enlargement and hole finishing. However, these two types of reamers have the following problems:

[0003] 1. The chips generated by the reamer during the cutting process can easily clog the chip removal groove and scratch the hole wall;

[0004] 2. The chip removal groove design weakens the strength of the tool body, making it prone to vibration or chipping during high-speed machining;

[0005] 3. Considering both tool strength and manufacturing process, it is impossible to manufacture these two types of reamers into small-diameter reamers. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a grooveless reamer.

[0007] This utility model also proposes a machining tool having the above-mentioned grooveless reamer.

[0008] According to a first aspect of the present invention, a slotless reamer includes a cutting head, the outer side wall of which has a plurality of planar structures, the plurality of planar structures being arranged circumferentially along the cutting head, and a cutting edge being formed between each two adjacent planar structures.

[0009] The grooveless reamer according to the embodiments of the present utility model has at least the following beneficial effects:

[0010] When in use, the fluteless reamer of this invention inserts its tip into the hole. As the fluteless reamer rotates, its cutting edge can process the hole wall to achieve the purpose of enlarging or repairing the hole. The chips generated by the cutting are temporarily stored in the area between the planar structure and the hole wall, preventing the chips from clogging this area and reducing the risk of scratching the hole wall. Furthermore, this fluteless reamer eliminates the need for the groove structure found in straight-groove or spiral-groove reamers, resulting in higher overall structural strength and reducing the risk of vibration or chipping during use. Additionally, this fluteless reamer is simple to manufacture and can be used to produce small-diameter reamers.

[0011] According to some embodiments of the present invention, each of the planar structures is parallel to the rotation center axis of the cutter head, and each of the planar structures is arranged in a circular array with the rotation center axis of the cutter head as the center.

[0012] According to some embodiments of the present invention, each of the cutting edges is arranged in a circular array with the rotation center axis of the cutter head as the center.

[0013] According to some embodiments of the present invention, a guide slope is also formed between each two adjacent planar structures. The guide slope is located on the side of the cutting edge near the end of the cutter head, wherein each guide slope cooperates to form a guide cone.

[0014] According to some embodiments of the present invention, each of the guide slopes is arranged in a circular array with the rotation center axis of the cutter head as the center.

[0015] According to some embodiments of this utility model, the angle between the guide inclined surface and the rotation center axis of the cutter head is α; satisfying: 5°≤α≤45°.

[0016] According to some embodiments of this utility model, the width of the cutting edge is f; satisfying: 0.02mm≤f≤0.20mm.

[0017] According to some embodiments of the present invention, the maximum thickness of the cutting head is d, and the distance between the end of the cutting edge away from the end of the cutting head and the end of the cutting head is L; satisfying: 0.10mm≤d≤20mm, and / or, L=(1.0~10.0)d.

[0018] According to some embodiments of this utility model, the number of planar structures is at least three.

[0019] The machining tool according to a second aspect of the present invention includes the grooveless reamer of the above-described embodiments.

[0020] The processing tool according to the embodiments of this utility model has at least the following beneficial effects:

[0021] The machining tool of this utility model has the aforementioned fluteless reamer. During use, the cutter head extends into the hole. As the fluteless reamer rotates, its cutting edge can process the hole wall to achieve the purpose of enlarging or repairing the hole. The chips generated by the fluteless reamer can be temporarily stored in the area between the planar structure and the hole wall, preventing the chips from clogging this area and reducing the risk of scratching the hole wall. Furthermore, the fluteless reamer of this utility model does not require the groove structure found on straight-groove or spiral-groove reamers, resulting in higher overall structural strength and reducing the risk of vibration or chipping during use. Additionally, the fluteless reamer of this utility model is simple to manufacture and can be used to produce small-diameter reamers.

[0022] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of a straight flute reamer;

[0025] Figure 2 This is a schematic diagram of the structure of a spiral groove reamer;

[0026] Figure 3 This is a schematic diagram of the structure of a grooveless reamer according to an embodiment of the present invention;

[0027] Figure 4 for Figure 3 A side view of the cutter head structure shown;

[0028] Figure 5 This is a schematic diagram of the structure of a grooveless reamer according to another embodiment of the present invention;

[0029] Figure 6 for Figure 5 A side view of the cutter head structure shown;

[0030] Figure 7 for Figure 3 A magnified view of a portion of the figure shown;

[0031] Figure 8 for Figure 4 The figure shown is the one with added labels.

[0032] Icon labels:

[0033] 10. Chip removal groove;

[0034] 100. Tool tip; 110. Planar structure; 120. Cutting edge; 121. Calibration section; 122. Tapered section; 130. Guide slope;

[0035] 200. Knife handle. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] like Figure 3 As shown, one embodiment of this utility model relates to a fluted reamer capable of cutting the wall of a machined hole for enlarging or repairing holes. The fluted reamer can be operated manually or mounted on a machine tool.

[0040] The grooveless reamer includes a shank 200 and a cutting head 100 connected to the shank 200, wherein the shank 200 and the cutting head 100 are coaxially arranged.

[0041] It should be noted that the cutter head 100 and the shank 200 can be directly connected together, and additional steps or clearances can be provided between the cutter head 100 and the shank 200. The entire fluted reamer can be manufactured as a single piece of alloy.

[0042] Combination Figure 3 and Figure 4 The outer wall of the cutter head 100 has multiple planar structures 110, which are arranged circumferentially along the cutter head 100. A cutting edge 120 is formed between each pair of adjacent planar structures 110.

[0043] It should be noted that when manufacturing the cutter head 100, a cylinder needs to be machined first, and then the outer wall of the cylinder is cut to form multiple planar structures 110 arranged circumferentially along the cutter head 100. After the multiple planar structures 110 are formed, a cutting edge 120 will be formed between two adjacent planar structures 110.

[0044] Combination Figure 7 and Figure 8 The width of the cutting edge 120 is f, which satisfies the condition: 0.02mm ≤ f ≤ 0.20mm. Specifically, f can be set to 0.02mm, 0.05mm, 0.10mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, or 0.20mm.

[0045] It should be noted that the width of the cutting edge 120 can be measured using a vernier caliper at the maximum width of the cutting edge 120.

[0046] Furthermore, the maximum thickness of the cutter head 100 is d, and the distance between the end of the cutting edge 120 away from the end of the cutter head 100 and the end of the cutter head 100 is L; satisfying: 0.10mm≤d≤20mm, and / or, L=(1.0~10.0)d.

[0047] The maximum thickness d of the cutting head 100 can be set to 0.10mm, 0.20mm, 0.50mm, 1.00mm, 2.00mm, 5.00mm, 10.00mm, 15.00mm, or 20.00mm. The distance L between the end of the cutting edge 120 furthest from the cutting head 100 and the end of the cutting head 100 is set according to the dimension d, and the value of L can be 1, 2, 5, or even 10 times d.

[0048] Specifically, the maximum thickness d of the cutting head 100 refers to the maximum dimension of the cutting head 100 on a straight line perpendicular to and intersecting the rotation center axis of the cutting head 100. The maximum thickness d of the cutting head 100 can be measured at the maximum width of the cutting head 100 using vernier calipers. The value of L can be measured using vernier calipers at the distance between the end of the cutting head 100 away from the tool holder 200 and the end of the cutting edge 120 near the tool holder 200.

[0049] When in use, the cutting head 100 of this fluteless reamer extends into the hole. As the fluteless reamer rotates, the cutting edge 120 can process the hole wall to achieve the purpose of enlarging or repairing the hole. The chips generated by the cutting of the fluteless reamer can be temporarily stored in the area between the planar structure 110 and the hole wall. The chips are less likely to clog this area, which can reduce the risk of the hole wall being scratched. In addition, the fluteless reamer of this invention does not require the groove structure of a straight flute reamer or a spiral flute reamer, resulting in higher overall structural strength and reducing the risk of vibration or chipping during use. Furthermore, the fluteless reamer of this invention is simple to manufacture and can be used to manufacture small-diameter reamers.

[0050] Combination Figure 3 and Figure 4 It should be noted that each planar structure 110 is parallel to the rotation center axis of the cutter head 100, and each planar structure 110 is arranged in a circular array with the rotation center axis of the cutter head 100 as the center.

[0051] Specifically, each planar structure 110 is equidistant from the rotation axis of the cutter head 100, and each planar structure 110 does not intersect with the others. All planar structures 110 are arranged in a circular array around the rotation axis of the cutter head 100. This allows the cutter head 100 to present a regular structure, and ensures that each cutting edge 120 is arranged in a circular array around the rotation axis of the cutter head 100, with each cutting edge 120 equidistant from the rotation axis of the cutter head 100, thus guaranteeing machining effect and accuracy.

[0052] like Figures 3 to 6 As shown, it can be understood that the number of planar structures 110 is at least three, such as three, four, five or even more than five.

[0053] Combination Figure 3 and Figure 4 Furthermore, a guide slope 130 is formed between each pair of adjacent planar structures 110. The guide slope 130 is located on the side of the cutting edge 120 near the end of the tool head 100, wherein each guide slope 130 cooperates to form a guide cone.

[0054] Specifically, each pair of adjacent planar structures 110 not only has a cutting edge 120 for cutting the hole wall, but also a guide slope 130. The guide slope 130 is located on the side of the cutting edge 120 away from the tool holder 200, and extends to the end face of the tool tip 100 away from the tool holder 200. The distance between the guide slope 130 and the rotation axis of the tool tip 100 gradually decreases along the direction from the tool holder 200 to the tool tip 100. In this way, all the guide slopes 130 cooperate to form a guide cone. It is understood that the setting of the guide cone is beneficial for extending the tool tip 100 into the hole.

[0055] Furthermore, each guide slope 130 is arranged in a circular array with the rotation center axis of the cutter head 100 as the center.

[0056] like Figure 7 As shown, the angle between the guide slope 130 and the rotation center axis of the cutter head 100 is α, satisfying: 5°≤α≤45°. Specifically, α can be set to 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 45°.

[0057] It should be noted that in the grooveless reamer of this utility model, the roughness of the planar structure 110, the guide bevel 130 and the cutting edge 120 can be controlled within Ra0.2μm.

[0058] like Figure 3 As shown, the reamer of this utility model can be processed in the following ways:

[0059] 1. The diameter of the tool holder is controlled by a centerless grinder (200mm).

[0060] 2. The diameter d of the cutter head 100 is controlled by a CNC cylindrical grinding machine. The cutter head 100 is rough and fine ground to achieve a surface roughness of Ra0.2μm. The calibration part 121 of the cutter head 100 has a taper of 0.005mm, and the taper part 122 has a taper of 0.02mm.

[0061] 3. The planar structure 110 and guide slope 130 on the tool head 100 are rough and fine ground using a CNC universal tool grinder, and the surface roughness reaches Ra0.2μm.

[0062] This utility model also provides a machining tool, including the grooveless reamer of the above embodiment. The machining tool can be a machine tool equipped with a grooveless reamer.

[0063] The machining tool of this utility model has the aforementioned fluteless reamer. In use, the cutter head 100 extends into the hole. When the fluteless reamer rotates, the cutting edge 120 can process the hole wall to achieve the purpose of enlarging or repairing the hole. The chips generated by the fluteless reamer can be temporarily stored in the area between the planar structure 110 and the hole wall, preventing the chips from clogging this area and reducing the risk of scratching the hole wall. Furthermore, the fluteless reamer of this utility model does not require the groove structure found on straight-groove or spiral-groove reamers, resulting in higher overall structural strength and reducing the risk of vibration or chipping during use. Additionally, the fluteless reamer of this utility model is simple to manufacture and can be used to produce small-diameter reamers.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A grooveless reamer, characterized in that, The tool includes a cutting head, the outer side wall of which has multiple planar structures, the multiple planar structures are arranged along the circumference of the cutting head, and a cutting edge is formed between each two adjacent planar structures; Each of the planar structures is parallel to the rotation center axis of the cutter head, and each of the planar structures is arranged in a circular array with the rotation center axis of the cutter head as the center; each of the cutting edges is arranged in a circular array with the rotation center axis of the cutter head as the center.

2. The grooveless reamer according to claim 1, characterized in that, A guide slope is also formed between each pair of adjacent planar structures. The guide slope is located on the side of the cutting edge near the end of the cutter head, wherein each guide slope cooperates to form a guide cone.

3. The grooveless reamer according to claim 2, characterized in that, Each of the guide ramps is arranged in a circular array around the rotation center axis of the cutter head.

4. The grooveless reamer according to claim 2, characterized in that, The angle between the guide slope and the rotation center axis of the cutter head is α; satisfying: 5° ≤ α ≤ 45°.

5. The grooveless reamer according to claim 1, characterized in that, The width of the cutting edge is f; satisfying: 0.02mm ≤ f ≤ 0.20mm.

6. The grooveless reamer according to claim 1, characterized in that, The maximum thickness of the cutting head is d, and the distance between the end of the cutting edge away from the end of the cutting head and the end of the cutting head is L; satisfying: 0.10mm ≤ d ≤ 20mm, and / or, L = (1.0~10.0)d.

7. The grooveless reamer according to claim 1, characterized in that, The number of planar structures is at least three.

8. A processing tool, characterized in that, Includes the grooveless reamer as described in any one of claims 1 to 7.

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