Deep hole machining device and machine tool

Abstract

The utility model relates to the technical field of machining, in particular to a deep hole machining device and a machine tool. The deep hole machining device comprises a tool and a supporting rod. The tool is provided with a tool bit. A mounting hole is formed in the supporting rod, the cutter is arranged in the mounting hole in a penetrating mode, the cutter head protrudes out of one end of the supporting rod, an open groove is formed in the end, away from the cutter head, of the supporting rod, and the open groove extends in the length direction of the supporting rod. The cutter can be prevented from distortion and breakage, the service life of the cutter is prolonged, and the production cost is reduced; the cutter handle can clamp the end, provided with the open groove, of the supporting rod, the open groove provides a certain deformation space for the cutter handle clamping supporting rod, and the stability of the cutter handle clamping supporting rod and the cutter on the cutter handle clamping supporting rod is conveniently improved. According to the machine tool provided by the utility model, by applying the deep hole machining device, the cutter can be prevented from being twisted or broken, the service life of the cutter is prolonged, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a deep hole machining device and machine tool. Background Technology

[0002] In machining, lathes, drilling machines, and other machine tools are often used for drilling operations. In many important fields such as aerospace, biomedicine, automotive, and mold making, there is a large amount of deep hole machining. A deep hole is defined as a hole whose depth-to-diameter ratio is greater than 10. Due to chip blockage, the torque increases, and the cutting tool is prone to twisting and deformation when machining such deep holes, affecting machining accuracy and efficiency. This is especially true for deep holes with small diameters and a depth-to-diameter ratio (L / d) ≥ 40, where the cutting tool is highly susceptible to severe bending or even breakage, reducing tool life and increasing production costs.

[0003] To address the problem of cutting tools easily twisting and breaking when machining deep holes, existing technologies typically make the tool shank into a stepped shape, where the diameter of the shank gradually increases from the tool tip towards the shank, in order to improve the overall strength of the tool. However, this type of tool has a long production cycle and high operating costs.

[0004] Therefore, there is an urgent need for a deep hole machining device and machine tool to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a deep hole machining device and machine tool that can prevent tool twisting or breakage, extend tool life, reduce production costs, and improve production efficiency.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] Deep hole machining apparatus, including:

[0008] The cutting tool has a cutting tip;

[0009] A support rod is provided with a mounting hole, the cutting tool passes through the mounting hole, the cutting head protrudes from one end of the support rod, and a slot is provided on the end of the support rod opposite to the cutting head, the slot extending along the length of the support rod.

[0010] Alternatively, the number of slots can be multiple, and the multiple slots are spaced apart on the periphery of the support rod.

[0011] Alternatively, the slot can be connected to the mounting hole.

[0012] As an optional feature, the support rod is provided with a flow guide groove, which extends along the length of the support rod.

[0013] As an optional solution, the flow guide channel is connected to the slot.

[0014] Alternatively, the flow channel can be connected to the mounting hole.

[0015] As an optional solution, the end of the support rod away from the slot is provided with an arc-shaped part, and the diameter of the arc-shaped part gradually decreases along the direction from the slot to the arc-shaped part.

[0016] As an optional option, the support rod is made of high-speed steel.

[0017] As an optional solution, the deep hole machining apparatus further includes:

[0018] The tool holder is configured to hold the support rod and the tool thereon.

[0019] Machine tools, including the aforementioned deep hole machining apparatus.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The deep hole machining device provided by this utility model includes a support rod with a mounting hole. A cutting tool is inserted into the mounting hole, and the cutting head protrudes from one end of the support rod. A slot is provided at the end of the support rod away from the cutting head, and the slot extends along the length of the support rod. By setting the support rod around the outer periphery of the cutting tool, the support rod supports and protects the cutting tool, preventing the cutting tool from twisting and deforming, avoiding the cutting tool from breaking, extending the cutting tool's life, and reducing production costs. The tool holder can clamp the slotted end of the support rod. The slot provides a certain deformation space for the tool holder to clamp the support rod, which facilitates improving the stability of the tool holder clamping the support rod and the cutting tool on it.

[0022] The machine tool provided by this utility model, by applying the above-mentioned deep hole machining device, can avoid tool twisting or breakage, extend tool life, reduce production costs, and improve production efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the deep hole machining apparatus provided in this embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the support rod provided in an embodiment of this utility model;

[0026] Figure 3 A cross-sectional view of the support rod provided in an embodiment of this utility model.

[0027] Figure label:

[0028] 100. Deep hole machining equipment;

[0029] 10. Cutting tools; 11. Cutting tips;

[0030] 20. Support rod; 21. Mounting hole; 22. Groove; 23. Guide channel; 24. Curved part;

[0031] 30. Knife handle. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] This embodiment provides a machine tool for drilling holes in parts. The machine tool can be a drilling machine or a lathe.

[0039] To achieve deep hole machining, the machine tool includes a machine body and a deep hole machining apparatus 100. The deep hole machining apparatus 100 includes a tool holder 30 and a cutting tool 10. The cutting tool 10 has a cutting head 11. The tool holder 30 is used to hold the cutting tool 10. The machine body is used to drive the tool holder 30 and the cutting tool 10 to rotate, so that the cutting head 11 performs deep hole machining on the workpiece. The machine body is a conventional structure and will not be described in detail in this embodiment.

[0040] During the drilling process, chips are generated. Due to chip blockage, the torque increases. When machining such deep holes, the tool 10 is prone to twisting and deformation, which affects the machining accuracy and efficiency of the hole. In particular, when machining deep holes with a small diameter and a depth-to-diameter ratio L / d ≥ 40, the tool 10 is very prone to severe bending or even breakage, reducing the tool life and increasing production costs.

[0041] To address the problem of cutting tools easily twisting and breaking when machining deep holes, existing technologies typically make the tool shank into a stepped shape, where the diameter of the shank gradually increases from the tool tip towards the shank, in order to improve the overall strength of the tool. However, this type of tool has a long production cycle and high operating costs.

[0042] To solve the above problems, such as Figure 1 As shown, the deep hole machining device 100 provided in this embodiment includes a support rod 20, which is provided with a mounting hole 21. The cutting tool 10 passes through the mounting hole 21, and the cutting head 11 protrudes from one end of the support rod 20. The end of the support rod 20 away from the cutting head 11 is provided with a slot 22, which extends along the length of the support rod 20. By providing the support rod 20 around the outer periphery of the cutting tool 10, the support rod 20 provides support and protection for the cutting tool 10, preventing the cutting tool 10 from twisting and deforming, avoiding breakage, and extending the life of the cutting tool 10. Compared with the integrally formed cutting tool 10, the combination of the support rod 20 and the cutting tool 10 has the advantages of lower cost, shorter manufacturing cycle, and stronger applicability. The tool holder 30 can clamp the end of the support rod 20 with the slot 22. The slot 22 provides a certain deformation space for the tool holder 30 to clamp the support rod 20, which facilitates the improvement of the stability of the tool holder 30 clamping the support rod 20 and the cutting tool 10 on it.

[0043] Optionally, such as Figures 1-3 As shown, there are four slots 22, spaced apart on the periphery of the support rod 20. When the tool holder 30 clamps the support rod 20, the slots 22 press the support rod 20 inward, thereby clamping the tool 10. This allows the tool holder 30 to clamp the tool 10 more stably, preventing the tool 10 from falling off during rotation. In other embodiments, the number of slots 22 can be two, three, five, or more, and can be adjusted adaptively according to actual needs.

[0044] Optionally, the slot 22 is connected to the mounting hole 21, which facilitates the processing of the slot 22 and the mounting hole 21, reduces the processing difficulty of the slot 22 and the mounting hole 21, and improves the processing efficiency of the support rod 20.

[0045] Optionally, the support rod 20 is provided with a guide groove 23, which extends along the length of the support rod 20 and is used to guide the coolant.

[0046] Optionally, the guide groove 23 is connected to the mounting hole 21. The guide groove 23 and the mounting hole 21 are formed by wire cutting. The connection between the guide groove 23 and the mounting hole 21 can reduce the processing difficulty of the guide groove 23 and the mounting hole 21, and further improve the processing efficiency of the support rod 20.

[0047] Optionally, the guide channel 23 is connected to any slot 22, which can reduce the processing steps of one slot 22, and the structural design is reasonable.

[0048] Optionally, the support rod 20 is provided with an arc-shaped portion 24 at one end away from the slot 22. The diameter of the arc-shaped portion 24 gradually decreases along the direction from the slot 22 to the arc-shaped portion 24. During the machining of the parts, the arc-shaped portion 24 can prevent the support rod 20 from interfering with the components on the machine tool body.

[0049] Optionally, the support rod 20 is made of high-speed steel. High-speed steel is a material with high hardness and high wear resistance. The tool 10 can be a twist drill, which has a certain degree of toughness. The support rod 20 made of high-speed steel works in conjunction with the twist drill to improve the support strength of the tool 10, prevent the tool 10 from breaking, and extend the service life of the tool 10.

[0050] Note that in the description of this specification, references to terms such as "some embodiments," "other embodiments," 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.

[0051] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A deep hole machining apparatus, characterized in that, include: The cutting tool (10) has a cutting head (11). A support rod (20) is provided with a mounting hole (21). The cutting tool (10) passes through the mounting hole (21). The cutting head (11) protrudes from one end of the support rod (20). A slot (22) is provided at the end of the support rod (20) away from the cutting head (11). The slot (22) extends along the length direction of the support rod (20) and communicates with the mounting hole (21). The handle (30) is configured to hold the support rod (20) at one end having the slot (22) and the cutting tool (10) thereon, the slot (22) providing deformation space for the handle (30) to hold the support rod (20).

2. The deep hole machining apparatus according to claim 1, characterized in that, The number of slots (22) is multiple, and the multiple slots (22) are spaced apart on the periphery of the support rod (20).

3. The deep hole machining apparatus according to claim 1, characterized in that, The support rod (20) has a guide groove (23) which extends along the length of the support rod (20).

4. The deep hole machining apparatus according to claim 3, characterized in that, The guide channel (23) is connected to the slot (22).

5. The deep hole machining apparatus according to claim 3, characterized in that, The guide groove (23) is connected to the mounting hole (21).

6. The deep hole machining apparatus according to any one of claims 1-5, characterized in that, The support rod (20) has an arc-shaped part (24) at one end away from the slot (22), and the diameter of the arc-shaped part (24) gradually decreases along the direction from the slot (22) to the arc-shaped part (24).

7. The deep hole machining apparatus according to any one of claims 1-5, characterized in that, The support rod (20) is made of high-speed steel.

8. A machine tool, characterized in that, Includes the deep hole machining apparatus as described in any one of claims 1-7.

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