Drilling and chamfering combined hole machining tool

Abstract

The utility model relates to the technical field of hole machining tools, in particular to a drilling and chamfering combined hole machining tool which comprises a tool body, a drilling blade and two chamfering blades, one end of the tool body is provided with a first mounting groove and two second mounting grooves, the first mounting groove is located in the end of the tool body, and the first mounting groove and the second mounting grooves are spaced by a preset distance; the cutter body is provided with a first mounting groove and a second mounting groove, the two second mounting grooves are arranged in a central symmetry manner, the drilling blade is detachably mounted in the first mounting groove, and a chamfering blade is detachably mounted in each second mounting groove. The drilling and chamfering integrated machine has the advantages that drilling and chamfering are combined, chamfers can be machined in the drilling process, the machining efficiency can be improved, and the drilling blade and the chamfering blade are detachable.

Description

Technical Field

[0001] The present application relates to the technical field of hole machining tools, and more specifically to a hole machining tool for drilling and chamfering. Background Art

[0002] The operation of machining holes of predetermined specifications, sizes, and shapes on a workpiece is called hole machining. In order to drill holes on the tool or expand holes based on existing holes, hole machining tools are often used.

[0003] When machining a cutting hole on a solid object, a twist drill is usually used. After the twist drill drills the cutting hole, the edge of the cutting hole is chamfered by a chamfering blade, that is, to obtain a cutting hole with a chamfer at the edge of the hole. Currently, two processing steps are usually taken, and there is room for further improvement in drilling efficiency.

[0004] In addition, a drill bit capable of drilling and chamfering simultaneously is disclosed in the patent document (CN112355361A). As can be seen from the drawings in its specification, the drill bit capable of drilling and chamfering simultaneously comprises a drill body, a drill blade is provided on the upper surface of the drill body, and the drill blade is fixedly connected to the drill body. When the drill blade is worn, it needs to be replaced as a whole, and the cost of use and replacement is relatively high.

[0005] Therefore, there is a demand for a hole processing tool that combines drilling and chamfering, can process chamfers simultaneously during the drilling process, helps to improve processing efficiency, and has detachable drilling blades and chamfering blades. Summary of the invention

[0006] The main purpose of the present application is to provide a hole processing tool for compound drilling and chamfering, wherein the hole processing tool for compound drilling and chamfering comprises a tool body, a drilling blade and two chamfering blades, one end of the tool body has a first mounting groove and two second mounting grooves, the first mounting groove is located at the end of the tool body, the first mounting groove and the second mounting groove are spaced a predetermined distance apart, the two second mounting grooves are arranged in a central symmetrical manner, the drilling blade is detachably mounted in the first mounting groove, and a chamfering blade can be detachably mounted in each of the second mounting grooves. By arranging detachable drilling blades and chamfering blades on the tool body, compared with the prior art, the tool body has the advantages of compound drilling and chamfering, chamfering can be processed simultaneously during drilling, it helps to improve processing efficiency, and both the drilling blade and the chamfering blade are detachable.

[0007] Another object of the present application is to provide a compound hole machining tool for drilling and chamfering, wherein the tool body has a through hole, and the compound hole machining tool for drilling and chamfering also includes a connecting piece, both ends of the connecting piece have threads, the connecting piece is placed in the through hole, and the two ends of the connecting piece are respectively threadedly connected to the tool body and the drilling blade, providing a way for the drilling blade to be detachably installed on the tool body.

[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a drilling and chamfering compound hole machining tool, wherein the drilling and chamfering compound hole machining tool comprises:

[0009] a blade body, wherein one end of the blade body has a first mounting groove and two second mounting grooves, the first mounting groove is located at the end of the blade body, the first mounting groove is spaced a predetermined distance from the second mounting groove, and the two second mounting grooves are centrally symmetrically arranged; and

[0010] a drilling insert, the drilling insert being detachably mounted in the first mounting groove; and

[0011] Two chamfering blades, each of the second mounting grooves is detachably mounted with a chamfering blade.

[0012] In one or more embodiments of the present application, the tool body has a through hole, and the drilling and chamfering compound hole processing tool also includes a connecting piece, both ends of the connecting piece have threads, the connecting piece is placed in the through hole, and the two ends of the connecting piece are respectively threadedly connected to the tool body and the drilling blade.

[0013] In one or more embodiments of the present application, the tool body includes a drilling portion, an expansion portion and a clamping portion, the expansion portion is located between the drilling portion and the clamping portion, the maximum radial dimension of the drilling portion is smaller than the maximum radial dimension of the expansion portion, the connection between the drilling portion and the expansion portion is transitioned by a conical surface, the first mounting groove is provided on the drilling portion, and the two second mounting grooves are provided on the expansion portion.

[0014] In one or more embodiments of the present application, the cutter body has two chip guide grooves, and each of the chip guide grooves extends a predetermined distance from the end of the drilling portion toward the expansion portion.

[0015] In one or more embodiments of the present application, the bottom wall of each of the second installation slots has a second threaded hole.

[0016] In one or more embodiments of the present application, each of the second mounting grooves is a diamond-shaped notch, and a material removal hole is provided at the junction of two side walls of the second mounting groove, and a cross-section of each of the chamfering blades is a diamond shape.

[0017] In one or more embodiments of the present application, a ring-shaped groove is provided at the connection between the clamping portion and the expansion portion.

[0018] In one or more embodiments of the present application, a side surface of the clamping portion has a planar cutout, and the planar cutout is located at an end of the annular groove away from the expansion portion.

[0019] In an embodiment of the present application, a hole processing tool for drilling and chamfering includes a tool body, a drilling blade and two chamfering blades. One end of the tool body has a first mounting groove and two second mounting grooves. The first mounting groove is located at the end of the tool body. The first mounting groove and the second mounting groove are separated by a predetermined distance. The two second mounting grooves are arranged symmetrically with respect to the center. The drilling blade is detachably mounted in the first mounting groove, and a chamfering blade can be detachably mounted in each second mounting groove. By arranging detachable drilling blades and chamfering blades on the tool body, compared with the prior art, the tool body has the advantages of combining drilling and chamfering, being able to simultaneously process chamfers during drilling, helping to improve processing efficiency, and both the drilling blade and the chamfering blade are detachable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a schematic structural diagram of a drilling and chamfering compound hole processing tool of the utility model from a certain viewing angle;

[0022] Figure 2 The figure shows a schematic diagram of the structure of a drilling and chamfering compound hole processing tool from another perspective;

[0023] Figure 3 The figure shows a schematic diagram of the structure of the cutter body when the drilling blade and the chamfering blade are not installed;

[0024] Figure 4 The figure shows a cross-sectional view of a compound drilling and chamfering hole machining tool. DETAILED DESCRIPTION

[0025] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0028] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0029] Application Overview

[0030] When machining a cutting hole on a solid object, a twist drill is usually used. After the twist drill drills the cutting hole, the edge of the cutting hole is chamfered by a chamfering blade, that is, to obtain a cutting hole with a chamfer at the edge of the hole. Currently, two processing steps are usually taken, and there is room for further improvement in drilling efficiency.

[0031] Based on the above technical problems, the present application proposes a compound hole machining tool for drilling and chamfering, wherein the compound hole machining tool for drilling and chamfering has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the compound hole machining tool for drilling and chamfering provided by the present application is easy to produce and low in cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0032] Schematic diagram of a compound drilling and chamfering hole machining tool.

[0033] refer to Figures 1 to 4 According to a preferred embodiment of the utility model, a drilling and chamfering compound hole processing tool includes a tool body 10, a drilling blade 20 and two chamfering blades 30.

[0034] Specifically, Figures 1 to 3As shown, one end of the tool body 10 has a first mounting groove 101 and two second mounting grooves 102, the first mounting groove 101 is located at the end of the tool body 10, the first mounting groove 101 and the second mounting groove 102 are spaced a predetermined distance apart, the two second mounting grooves 102 are centrally symmetrically arranged, the drilling blade 20 is detachably mounted in the first mounting groove 101, and each of the second mounting grooves 102 is detachably mounted with a chamfering blade 30.

[0035] It should be noted that, in the embodiment of the present application, the first mounting groove 101 is a groove, and each of the second mounting grooves 102 is a diamond-shaped notch. When the drilling blade 20 is placed in the first mounting groove 101, the drilling blade 20 fits with the groove surface of the first mounting groove 101, and a cross section of each of the chamfering blades 30 is a diamond shape. Figure 4 As shown, the two ends of the drilling blade 20 respectively have a pointed head (not shown) and a first threaded hole 201 .

[0036] More specifically, if Figure 1 As shown, the tool body 10 includes a drilling portion 103, an expansion portion 104 and a clamping portion 105, the expansion portion 104 is located between the drilling portion 103 and the clamping portion 105, the drilling portion 103, the expansion portion 104 and the clamping portion 105 are integrally formed, the maximum radial dimension of the drilling portion 103 is smaller than the maximum radial dimension of the expansion portion 104, the connection between the drilling portion 103 and the expansion portion 104 is transitioned by a conical surface, the first mounting groove 101 is provided on the drilling portion 103, the two second mounting grooves 102 are provided on the expansion portion 104, and when the chamfering blade 30 is installed in the second mounting groove 102, the radial dimension of a cutting edge of the chamfering blade 30 is larger than the radial dimension of the conical surface on the same circumferential cross section.

[0037] It should be noted that, compared with the prior art in which a twist drill is used to first drill a drilling hole on the workpiece to be processed, and then the edge of the drilling hole is chamfered by a chamfering cutter, that is, drilling and chamfering are two separate steps, the embodiment of the present application provides the first mounting groove 101 and the second mounting groove 102 on the cutter body 10, integrates the drilling blade 20 and the chamfering blade 30 on the cutter body 10, and the drilling blade 20 is arranged at the end of the cutter body 10, and the chamfering blade 30 is spaced a predetermined distance from the drilling blade 20. When the drilling blade 20 cuts the drill hole on the workpiece, the two chamfering blades 30 simultaneously contact the edge of the drill hole and cut a chamfer at the edge of the drill hole, which has the advantages of combining drilling and chamfering, and can simultaneously process chamfers during the drilling process, which helps to improve processing efficiency; in addition, compared with the prior art in which the drilling blade is integrally connected to the drilling body, the embodiment of the present application allows the drilling blade and the chamfering blade to be detachably mounted on the tool body, which has the advantages of both the drilling blade and the chamfering blade being detachable and having lower usage and replacement costs.

[0038] In addition, in order to install the drilling insert 20 in the first installation groove 101, as shown in FIG. Figure 3 and Figure 4 As shown, the tool body 10 has a through hole 106, which extends from the end of the clamping portion 105 toward the drilling portion 103 and penetrates the tool body 10, and connects the through hole 106 with the first mounting groove 101; the drilling and chamfering compound hole processing tool also includes a connecting member 40, both ends of the connecting member 40 are threaded, the connecting member 40 is placed in the through hole 106, and the two ends of the connecting member 40 are respectively threadedly connected to the through hole 106 of the tool body 10 and the first threaded hole 201 of the drilling blade 20.

[0039] It should be noted that, during installation, the drilling blade 20 is first placed in the first installation groove 101, and then one end of the connecting member 40 is placed in the end close to the clamping portion 105 from the through hole 106. It should be noted that the end of the connecting member 40 away from the drilling blade 20 has a polygonal hole 401. In the embodiment of the present application, the polygonal hole 401 is implemented as a hexagonal hole. The processing personnel use a hexagonal screwdriver to reach into the polygonal hole 401 of the connecting member 40 and insert the connecting member 401 into the connecting member 40. 0 contacts the threaded portion on the wall of the through hole 106, the connecting piece 40 is tightened. After the connecting piece 40 rotates circumferentially for a predetermined number of times, one end of the connecting piece 40 away from the polygonal hole 401 passes through the threaded portion on the wall of the through hole 106 and is screwed into the first threaded hole 201 on the drilling insert 20. It should be pointed out that, at the same time, one end of the connecting piece 40 close to the polygonal hole 401 is threadedly connected with the threaded portion on the wall of the through hole 106, thereby realizing the installation of the drilling insert 20.

[0040] Furthermore, in order to realize the installation of the chamfering blade 30 in the second installation groove 102, as shown in FIG. Figure 3 As shown, the bottom wall of each of the second mounting grooves 102 has a second threaded hole 1021, and each of the chamfering blades 30 has a third threaded hole (not marked in the figure). When the chamfering blade 30 is placed in the corresponding second mounting groove 102, the third threaded hole is opposite to the second threaded hole 1021, and a screw fastener is screwed into the third threaded hole and the second threaded hole 1021 in sequence, thereby realizing the detachable connection between the chamfering blade 30 and the tool body 10.

[0041] In addition, in order to prevent the connection between the two side walls of the second installation groove 102 from being insufficiently cut during processing, thereby affecting the installation of the chamfering blade 30, as shown in FIG. Figure 3 and Figure 4 As shown, each of the second installation grooves 102 has a material removal hole 1022 at the junction of two side walls.

[0042] Further, to facilitate chip removal during drilling, as Figures 1 to 3 As shown, the tool body 10 has two chip grooves 107, and each of the chip grooves 107 extends a predetermined distance along an arc from the end of the drilling portion 103 toward the expansion portion 104. It should be noted that the drilling blade 20 also has a chip groove that matches the chip groove 107 on the tool body 10.

[0043] Further, to facilitate clamping, as Figure 1 and Figure 4As shown, the connection between the clamping portion 105 and the expansion portion 104 has an annular groove 1051 ; in addition, the side surface of the clamping portion 105 has a planar cutout 1052 , and the planar cutout 1052 is located at one end of the annular groove 1051 away from the expansion portion 104 .

[0044] It should be added that, in the embodiments of the present application, Figure 1 As shown, the maximum radial dimension of the clamping portion 105 is smaller than the maximum radial dimension of the expansion portion 104, and the maximum radial dimension of the clamping portion 105 is larger than the maximum radial dimension of the drilling portion 103. The clamping portion 105, the expansion portion 104 and the drilling portion 103 are all cylindrical as a whole.

[0045] In summary, the drilling and chamfering compound hole machining tool based on the embodiment of the present application is explained, which provides the advantages of drilling and chamfering compound hole machining tool, can simultaneously process chamfers during the drilling process, helps to improve machining efficiency, and both the drilling blade and the chamfering blade are removable.

[0046] It is worth mentioning that in the embodiment of the present application, the drilling and chamfering compound hole processing tool has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the drilling and chamfering compound hole processing tool provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0047] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A drilling and chamfering compound hole processing tool, characterized in that: The drilling and chamfering compound hole processing tool comprises A tool body, a drilling blade, two chamfering blades and a connecting piece, one end of the tool body has a first mounting groove and two second mounting grooves, the first mounting groove is located at the end of the tool body, the first mounting groove and the second mounting groove are spaced a predetermined distance apart, the two second mounting grooves are arranged symmetrically with respect to the center, the drilling blade is detachably mounted in the first mounting groove, and one of the chamfering blades can be detachably mounted in each of the second mounting grooves, the tool body has a through hole, both ends of the connecting piece have threads, the connecting piece is placed in the through hole, and the two ends of the connecting piece are respectively threadedly connected to the tool body and the drilling blade, the tool body includes a drilling portion, an expansion portion and a clamping portion, the expansion portion is located between the drilling portion and the clamping portion, the maximum radial dimension of the drilling portion is smaller than the maximum radial dimension of the expansion portion, the connection between the drilling portion and the expansion portion is transitioned by a conical surface, the first mounting groove is arranged on the drilling portion, and the two second mounting grooves are arranged on the expansion portion.

2. The drilling and chamfering compound hole machining tool according to claim 1, characterized in that: The cutter body has two chip guiding grooves, and each of the chip guiding grooves extends from the end of the drilling portion toward the expansion portion by a predetermined distance.

3. The drilling and chamfering compound hole machining tool according to claim 1 or 2, characterized in that: The bottom wall of each of the second installation slots has a second threaded hole.

4. The drilling and chamfering compound hole machining tool according to claim 3, characterized in that: Each of the second installation grooves is a diamond-shaped notch, and a material removal hole is provided at the junction of two side walls of the second installation groove, and a cross section of each of the chamfering blades is a diamond shape.

5. The drilling and chamfering compound hole machining tool according to claim 4, characterized in that: A connecting portion between the clamping portion and the expansion portion is provided with an annular groove.

6. The drilling and chamfering compound hole machining tool according to claim 5, characterized in that: The side surface of the clamping portion has a planar cutout, and the planar cutout is located at an end of the annular groove away from the expansion portion.

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