Hole machining cutter

Abstract

According to the hole machining tool, the tubular tool bit is arranged, the tubular tool bit can directly machine a hole in a workpiece, and the precision is high; an ejection mechanism is further arranged to be matched with the tubular tool bit, and after the tool bit drills holes in the workpiece, drilling waste is left in the tool bit. The ejection mechanism comprises an ejection rod and a driving assembly, the ejection rod is arranged in the tool bit, the ejection rod and the tool bit are coaxially arranged, and when the driving assembly drives the ejection rod to axially move, the ejection rod pushes waste in the tool bit, so that the waste in the tool bit is pushed out, the hole machining precision can be guaranteed, the waste can be ejected out, hole generation is not affected, and the machining efficiency is improved. The working efficiency is improved; the machining precision is increased; the machining stroke of the tool bit is set to be larger than 1 / 2 of the depth of the machined hole, so that the tool bit can machine the hole in a double-face machining mode, the machining stroke is shortened, and the machining precision is guaranteed.

Description

Technical Field

[0001] This application relates to the field of machining tool technology, specifically to a hole machining tool. Background Technology

[0002] In existing technologies, drilling is the most common method for hole machining. The drilling tool moves relative to the workpiece and feeds axially to create a hole. In current drilling operations, the primary cutting tool is the drill bit. During rotation, the drill bit not only creates the hole but also removes waste material, resulting in high efficiency.

[0003] However, when the drilling depth is large or the workpiece is hard, due to the inherent structural characteristics of drill bits, drill bits will exhibit a "deviation" phenomenon, that is, the drill bit bends, the axis of the hole is skewed, causing the hole diameter to enlarge and the hole to be out of round, which leads to a significant reduction in machining accuracy and thus a significant reduction in the workpiece yield.

[0004] Therefore, there is room for further improvement in existing hole-machining tools. Summary of the Invention

[0005] In view of this, and in response to the technical problem that the hole machining in the prior art uses drill-type tools, resulting in low precision of the machined holes, this application provides a hole machining tool, which is provided with a tubular cutter head and an ejection mechanism. The tubular cutter head is used to machine the hole to achieve high precision machining, and the ejection mechanism is used to eject the waste material inside the tubular cutter head to avoid affecting the machining of the cutter head and improve machining efficiency.

[0006] This application provides a hole-machining tool, comprising:

[0007] Tooling assembly, including a tubular tool head for hole machining;

[0008] The ejection mechanism includes an ejector rod coaxially arranged with the cutter head, and a drive assembly for driving the ejector rod to move axially within the cutter head;

[0009] The travel distance of the push rod is X1, and the processing distance of the cutter head is X2, wherein X1>X2;

[0010] The required hole depth is Y, where x2 > 1 / 2Y.

[0011] Compared with the prior art, the hole-machining tool provided in this application has a tubular cutter head, which can directly machine holes on the workpiece with high precision. Simultaneously, it also has an ejector mechanism that cooperates with the tubular cutter head. After the cutter head drills a hole in the workpiece, the drilling waste remains inside the cutter head. The ejector mechanism includes a push rod and a drive assembly. The push rod is located inside the cutter head and is coaxially arranged with the cutter head. When the drive assembly drives the push rod to move axially, the push rod pushes the waste inside the cutter head, thereby ejecting the waste. This allows the hole-machining tool of this application to both ensure hole machining accuracy and eject waste without affecting hole formation, improving work efficiency and increasing machining accuracy. By setting the machining stroke of the cutter head to be greater than 1 / 2 of the hole depth, the cutter head can perform hole machining in a double-sided manner, shortening the machining stroke and thus ensuring machining accuracy.

[0012] Preferably, it also includes a mounting housing, the two ends of which are respectively connected to the tool assembly and the ejection mechanism;

[0013] The mounting housing is provided with a cavity through which the top rod passes axially;

[0014] The mounting housing has an oil inlet hole on the side near the tool assembly. The oil inlet hole opens on the outer wall of the mounting housing and communicates with the cavity.

[0015] Preferably, the drive assembly includes a push rod and a power component, the power component being connected to the end of the mounting housing away from the tool assembly;

[0016] One end of the push rod is connected to the power component, and the other end is fixedly connected to the top rod. The power component is used to drive the push rod to move axially.

[0017] Preferably, it also includes an oil inlet assembly, which is located inside the tool assembly and sleeved outside the push rod;

[0018] There is a sliding gap between the push rod and the cutter head, which is used to allow lubricating oil to pass through.

[0019] Preferably, the oil inlet assembly is provided with an oil inlet channel, the oil inlet end of the oil inlet channel is connected to the cavity, and the oil outlet end of the oil inlet channel is connected to the sliding gap.

[0020] Preferably, the oil inlet assembly includes an elastic element and an oil guide sleeve arranged sequentially along the oil inlet direction, and the elastic element and the oil guide sleeve are sleeved on the push rod;

[0021] The oil outlet end of the oil guide sleeve is at least partially located inside the cutter head, and an oil inlet channel is formed between the oil guide sleeve and the push rod.

[0022] The elastic element is used to provide an elastic force to the oil guide sleeve in the direction of the cutter head.

[0023] Preferably, the oil guide sleeve has an oil guide portion at the oil outlet end, the outer diameter of the oil guide portion gradually decreases along the oil outlet direction, and the oil guide portion is at least partially located inside the cutter head;

[0024] The outer diameter of the oil guide portion away from the end of the cutter head is larger than the inner diameter of the cutter head, and the outer diameter of the oil guide portion extending into the cutter head is smaller than the inner diameter of the cutter head.

[0025] Preferably, the tool assembly includes a mounting base and a tool holder, the mounting base including a connecting portion and a clamping portion, the connecting portion being used to connect to the mounting housing, and the clamping portion being used to clamp the tool head;

[0026] The tool holder is sleeved on the mounting base, and the mounting base can be displaced axially to adjust the size of the clamping part.

[0027] Preferably, the clamping part includes at least two clamping blocks, which are arranged circumferentially and have an adjustment groove between them;

[0028] The mounting base is provided with a mounting cavity, which axially extends through the clamping part and the connecting part, and the adjusting groove communicates with the mounting cavity;

[0029] The outer diameter of the clamping block gradually increases along the oil outlet direction.

[0030] Preferably, the mounting cavity has a threaded mounting portion at one end near the mounting housing;

[0031] The oil inlet assembly also includes a limiting sleeve, and the outer side of the limiting sleeve is provided with a threaded mating part that mates with the threaded mounting part;

[0032] The axial length of the threaded mounting portion is greater than the axial length of the threaded mating portion.

[0033] The hole-machining tool of this application has at least the following technical advantages:

[0034] 1. By setting a tubular cutter head, it is possible to ensure both hole machining and machining accuracy; at the same time, the ejection mechanism, which works in conjunction with the cutter head, can remove waste material inside the cutter head, thus avoiding affecting the cutter head's machining of the hole;

[0035] 2. By setting up a mounting housing, the ejector mechanism and the tool assembly are respectively set at both ends of the mounting housing. The mounting housing has a cavity for the ejector rod to pass through, thereby ensuring the coaxiality accuracy of the ejector rod and the tool. This ensures the machining accuracy of the tool and also ensures the accuracy of the ejector rod's action on the scrap, avoiding the deviation of the force when the ejector rod pushes the scrap, which would affect the machining accuracy of the tool.

[0036] 3. By setting up an oil inlet component, lubricating oil can be guided into the cutter head, making the cutting head hole machining smooth and unobstructed, ensuring the surface smoothness of the formed hole;

[0037] 4. By setting an oil guide sleeve and an elastic element, the oil outlet end of the oil guide sleeve is at least partially located inside the cutter head, thereby ensuring that the lubricating oil can be introduced into the cutter head. The elastic element provides axial elastic force to the oil guide sleeve, so that the oil guide sleeve always tends to move closer to the cutter head, thereby ensuring that the oil guide sleeve is always in close contact with the cutter head and that the lubricating oil can always be introduced into the cutter head. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural schematic diagram of a hole-machining tool provided in an embodiment of this application;

[0039] Figure 2 This is a partial cross-sectional view of a hole-machining tool provided in one embodiment of this application. Figure 1 ;

[0040] Figure 3 This is a partial cross-sectional view of a hole-machining tool provided in one embodiment of this application. Figure 2 ;

[0041] Figure 4 yes Figure 2 A magnified view of part A;

[0042] Figure 5 This is a three-dimensional structural schematic diagram of the mounting base provided in one embodiment of this application;

[0043] Figure 6 This is a cross-sectional structural schematic diagram of the mounting base provided in one embodiment of this application;

[0044] Figure 7 This is a three-dimensional cross-sectional structural diagram of a cutting head provided in an embodiment of this application.

[0045] Figure reference numerals: 1. Hole machining tool;

[0046] 11. Tool assembly; 12. Ejection mechanism; 13. Mounting housing; 14. Oil inlet assembly;

[0047] 111. Cutting head; 112. Mounting base; 113. Cutting holder; 114. Adjusting sleeve; 115. Locking sleeve; 116. Mounting sleeve; 1111. Mounting part; 1112. Limiting part; 1113. Machining part;

[0048] 1121. Clamping part; 1122. Clamping block; 1123. Adjustment groove; 1124. Mounting cavity; 1125. Threaded mounting part; 1126. Connecting part;

[0049] 121. Push rod; 122. Push rod; 123. Power component;

[0050] 131. Oil inlet hole;

[0051] 141. Oil inlet channel; 142. Oil guide sleeve; 143. Elastic element; 144. Limiting sleeve; 1421. Oil guide part. Detailed Implementation

[0052] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0053] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0054] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limitations on this application.

[0055] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 7 illustrate.

[0056] This application provides a hole-machining tool 1 for machining holes in a workpiece; such as Figures 1 to 3As shown, the hole-machining tool 1 includes a mounting housing 13, an ejector mechanism 12, and a tool assembly 11. The mounting housing 13 is a cylindrical structure with a cavity inside for mounting the ejector mechanism 12 and the tool assembly 11. Threads are provided at both ends of the cavity, and the ejector mechanism 12 and the tool assembly 11 are respectively connected to the two ends of the mounting housing 13 via these internal threads. The tool assembly 11 is used for hole machining on the workpiece. The ejector mechanism 12 extends through the cavity toward the tool assembly 11 to penetrate into it, and is used to expel waste material from the tool assembly 11. The mounting housing 13 provides mounting space for the tool assembly 11 and the ejector mechanism 12, and also provides movement space for the ejector mechanism 12. This ensures good coaxiality between the ejector mechanism 12 and the tool assembly 11, guaranteeing both the machining accuracy of the tool and the accuracy of the ejector mechanism 12's action on the waste material within the tool assembly 11. This prevents the force of the ejector mechanism 12 from shifting when pushing the waste material, thus affecting the machining accuracy of the tool assembly 11.

[0057] Specifically, the tool assembly 11 will be further described; such as Figures 1 to 2 As shown, the tool assembly 11 includes a tool head 111, a mounting base 112, and a tool holder 113. The tool head 111 has a tubular structure, and when it interacts with the workpiece, a hole is formed directly with the outer diameter of the tool head 111. The tool head 111 retains a columnar waste material. The tubular structure of the tool head 111 provides good machining accuracy and prevents "deviation," resulting in good hole machining accuracy. Figure 2 , Figures 4 to 6 As shown, the mounting base 112 is generally cylindrical in shape. One end of the mounting base 112 is connected to the mounting housing 13, and the other end is connected to the cutting head 111. The mounting base 112 has an axially penetrating mounting cavity 1124. The cutting head 111 is inserted into the mounting cavity 1124, and the mounting base 112 clamps the cutting head 111. The cutting head 113 is sleeved on the mounting base 112, and the cutting head 111, the cutting head 113, the mounting base 112, and the cutting head 111 are coaxially arranged.

[0058] Among them, such as Figure 5 , Figure 6 As shown, the mounting base 112 includes a connecting portion 1126 and a clamping portion 1121. The connecting portion 1126 is used to connect with the mounting housing 13, and the clamping portion 1121 is used to clamp the cutting head 111; Figure 2As shown, the tool holder 113 is disposed at the clamping part 1121, and the mounting base 112 can be displaced axially to adjust the size of the clamping part 1121. Specifically, the clamping part 1121 includes at least two clamping blocks 1122, which are arranged circumferentially. An adjustment groove 1123 is provided between the clamping blocks 1122, i.e., there is a gap between the clamping blocks 1122. The outer diameter of the clamping blocks 1122 gradually increases along the oil outlet direction, and the outer end face of the clamping blocks 1122 is inclined to the axis, so that the outer side of the clamping part 1121 forms a V-shape. The mounting cavity 1124 axially penetrates the clamping part 1121 and the connecting part 1126. The adjustment groove 1123 opens on the outer side of the clamping part 1121 and communicates with the mounting cavity 1124, thereby allowing the size of the mounting cavity 1124 at the clamping part 1121 to be adjusted. The tool holder 113 When the tool holder 113 is displaced axially toward the tool head 111, the inner wall of the tool holder 113 fits against the inclined outer end face of the clamping part 1121, applying a radial force to the clamping part 1121. The adjustment groove 1123 between the clamping blocks 1122 provides space for the clamping blocks 1122 to move, thereby causing the clamping blocks 1122 to retract radially, thus reducing the inner diameter of the mounting cavity 1124 at the clamping block 1122, resulting in a better clamping effect on the tool head 111. It can also be adjusted for tool heads 111 with different outer diameters, so that the mounting seat 112 can adapt to tubular tool heads 111 of different sizes, increasing the applicability of the hole machining tool 1.

[0059] like Figure 2 As shown, the inner side of the end of the tool holder 113 near the tool head 111 is provided with an inclined surface corresponding to the inclined outer end face of the clamping part 1121, to ensure the fit between the tool holder 113 and the mounting base 112, thereby ensuring the stability of the size adjustment of the mounting cavity 1124 of the clamping part 1121 of the mounting base 112 by the tool holder 113. Meanwhile, as... Figure 5 , Figure 6 As shown, the connecting part 1126 has a thread on its outer side, and an adjusting sleeve 114 is fitted over the connecting part 1126. The adjusting sleeve 114 is threadedly connected to the connecting part 1126, and the adjusting sleeve 114 can rotate along the thread to change its position; as shown Figure 2 As shown, the tool holder 113 is at least partially located on the connecting part 1126. The side end of the adjusting sleeve 114 near the tool head 111 is in contact with the tool holder 113. The adjusting sleeve 114 has a limiting effect on the axial displacement of the tool holder 113, which can lock the tool holder 113 and ensure the stability of the tool holder 113 in adjusting the size of the clamping part 1121 mounting cavity 1124, thereby ensuring the stability of the mounting seat 112 in fixing the tool head 111.

[0060] Furthermore, such as Figure 2 , Figure 4As shown, the tool holder 113 is provided with radially arranged oil holes, so that lubricating oil can enter between the tool holder 113 and the mounting base 112 through the oil holes to lubricate the two and prevent displacement jamming between the tool holder 113 and the mounting base 112.

[0061] Furthermore, such as Figure 7 As shown, the cutting head 111 includes a mounting portion 1111, a limiting portion 1112, and a machining portion 1113 arranged sequentially along the axial direction. The mounting portion 1111 is disposed inside the mounting base 112, and the outer wall of the mounting portion 1111 fits against the inner wall of the mounting base 112. The machining portion 1113 is used for hole machining. The radial thickness of the mounting portion 1111 is greater than the radial thickness of the machining portion 1113 to ensure better connection stability between the cutting head 111 and the mounting base 112. The limiting portion 1112 is located within the machining portion. Between 1113 and mounting part 1111, the outer diameter of limiting part 1112 is larger than the outer diameter of mounting part 1111 and machining part 1113, thus forming a limiting step. This limiting step interacts with the outer wall of mounting base 112 to axially limit machining part 1113. When machining part 1113 interacts with workpiece, machining part 1113 is subjected to a force in the direction of mounting base 112. Under the action of limiting part 1112, machining part 1113 can be guaranteed not to move axially.

[0062] Based on any of the above embodiments, the ejection mechanism 12 will be further described; such as Figures 1 to 3 As shown, the ejection mechanism 12 includes an ejector rod 121 and a drive assembly. The drive assembly is radially fixed to the mounting housing 13 and axially connected to the ejector rod 121. The ejector rod 121 is a rod-shaped structure that passes through the mounting housing 13 and the mounting base 112 and extends into the cutter head 111. The drive assembly can drive the ejector rod 121 to move axially, thereby changing the length of the ejector rod 121 extending into the cutter head 111, and thus ejecting the machining waste inside the cutter head 111, avoiding any impact on the machining of the cutter head 111. In this embodiment, the outer diameter of the portion of the ejector rod 121 located inside the cutter head 111 is smaller than the inner diameter of the cutter head 111 to avoid friction between the ejector rod 121 and the cutter head 111.

[0063] Among them, such as Figure 3As shown, the drive assembly includes a push rod 122 and a power component 123. The power component 123 is threadedly connected to the end of the mounting housing 13 away from the tool assembly 11. One end of the push rod 122 is connected to the power component 123, and the other end is fixedly connected to the push rod 121. The power component 123 is used to drive the push rod 122 to move axially. In this embodiment, the power component 123 is a cylinder or hydraulic cylinder, and the push rod 122 can be the piston rod of a cylinder or hydraulic cylinder. The push rod 122 is at least partially located in the cavity of the mounting housing 13 and connected to the push rod 121. Furthermore, the driving stroke of the power component 123 to the push rod 121 is X1, that is, the moving stroke of the push rod 121 is X1, and the machining stroke of the tool head 111 is X2, that is, the length of the machining portion 1113 of the tool head 111 is X2, wherein X1>X2. That is, it is necessary to ensure that when the push rod 121 is driven to its maximum stroke, the end of the push rod 121 can extend beyond the end of the cutter head 111, so as to ensure that the waste material in the cutter head 111 can be completely pushed out; at the same time, when the push rod 121 has its minimum travel stroke, it is necessary to ensure that the end of the push rod 121 does not extend into the machining part 1113, and can be located in the mounting part 1111 or the limiting part 1112, so as to avoid the push rod 121 abutting against the waste material during the machining part 1113, which would affect the hole machining.

[0064] It should be noted that in this application, the required hole depth is Y, where x2>1 / 2Y, that is, the machining stroke of the cutter head 111 is set to be greater than 1 / 2 of the hole depth, so that the cutter head 111 can perform hole machining in a double-sided machining manner, shorten the machining stroke, reduce the machining difficulty, improve the accuracy of hole machining, and further avoid the occurrence of "deviation".

[0065] Based on any of the above embodiments, the hole-making tool 1 will be further described; such as Figures 1 to 4 As shown, the hole-making tool 1 also includes an oil inlet assembly 14, which is located inside the mounting base 112 and sleeved outside the push rod 121. The oil inlet assembly 14 forms an oil inlet channel 141 inside the mounting base 112. The mounting housing 13 has a radially arranged oil inlet hole 131 on its side end near the tool assembly 11. The oil inlet hole 131 opens on the outer wall of the mounting housing 13 and communicates with the cavity. The outer diameter of the push rod 121 is smaller than the diameter of the cavity and smaller than the diameter of the mounting cavity 1124, thereby making the oil inlet channel 141 communicate with the cavity. Since the push rod 121 is located inside the mounting base 112, the oil inlet assembly 141 is located inside the mounting base 112. The outer diameter of the cutter head 111 is smaller than the inner diameter of the cutter head 111, thus creating a sliding gap between the push rod 121 and the cutter head 111. The oil outlet of the oil inlet channel 141 is connected to the sliding gap, and the oil inlet of the oil inlet channel 141 is connected to the cavity. When lubricating oil flows into the cavity from the oil inlet hole 131, it can flow into the oil inlet channel 141 and then flow from the oil inlet channel 141 to the sliding gap, thereby lubricating the cutter head 111 to ensure the smoothness of the cutter head 111 during drilling. This ensures that the hole machining of the cutter head 111 is smooth and fluid, without jamming, and guarantees the surface smoothness of the formed hole.

[0066] Furthermore, such as Figure 2 , Figure 4 As shown, the oil inlet assembly 14 includes a limiting sleeve 144, an elastic element 143, and an oil guide sleeve 142 arranged sequentially along the oil inlet direction. The limiting sleeve 144, elastic element 143, and oil guide sleeve 142 are sleeved on the push rod 121. The elastic element 143 is located between the limiting sleeve 144 and the oil guide sleeve 142, with one end of the elastic element 143 abutting against the limiting sleeve 144 and the other end abutting against the oil guide sleeve 142; wherein, as Figure 2 , Figure 6 As shown, the mounting cavity 1124 has a threaded mounting portion 1125 at one end near the mounting housing 13, that is, the mounting base 112 has an internal thread, and the limiting sleeve 144 has a threaded mating portion that mates with the threaded mounting portion 1125 on the outside, that is, the limiting sleeve 144 has an external thread on the outside. The limiting sleeve 144 is threadedly connected to the mounting base 112 and connected to the mounting base 112, thereby limiting the elastic element 143 and the oil guide sleeve 142 within the mounting base 112; the elastic element 143 thus generates an axial elastic force, which acts on the oil guide sleeve 142, thereby making the oil guide sleeve 142 tend to always move closer to the cutter head 111.

[0067] In this embodiment, as Figure 4 As shown, the elastic element 143 is a spring; the inner diameter of the oil guide sleeve 142 is larger than the outer diameter of the push rod 121, thus creating an oil passage gap between the oil guide sleeve 142 and the push rod 121. Since the oil outlet end of the oil guide sleeve 142 is at least partially located inside the cutter head 111, it ensures that the oil passage gap and the sliding gap are connected, allowing lubricating oil to flow into the sliding gap through the oil passage gap, thereby guiding the lubricating oil into the cutter head 111. The elastic force provided by the elastic element 143 to the oil guide sleeve 142 ensures that the oil guide sleeve 142 is always in close contact with the cutter head 111, ensuring direct conductivity between the oil passage gap and the sliding gap, ensuring that the lubricating oil can always be guided into the cutter head 111, and ensuring the lubrication effect on the cutter head 111.

[0068] It should be noted that in this embodiment, the axial length of the threaded mounting portion 1125 is greater than the axial length of the threaded mating portion, thereby allowing the setting position of the limiting sleeve 144 within the mounting base 112 to be adjusted. This, in turn, changes the distance between the limiting sleeve 144 and the oil guide sleeve 142, i.e., changes the axial space for placing the elastic element 143, thereby changing the magnitude of the elastic force exerted by the elastic element 143 on the oil guide sleeve 142. This allows for the adjustment of the elastic force for oil guide sleeves 142 of different specifications, ensuring that the oil guide sleeve 142 is always in close contact with the cutter head 111 to guarantee the conductivity of the lubricating oil.

[0069] Furthermore, such as Figure 4As shown, the oil guide sleeve 142 has an oil guide section 1421 at the oil outlet end. The outer diameter of the oil guide section 1421 gradually decreases along the oil outlet direction, so that the oil guide section 1421 forms a conical structure. The outer surface of the oil guide section 1421 is an inclined surface, and the end of the oil guide section 1421 is smaller. The outer diameter of the end of the oil guide section 1421 away from the cutter head 111 is larger than the inner diameter of the cutter head 111, and the outer diameter of the end of the oil guide section 1421 is smaller than the inner diameter of the cutter head 111. This allows the end of the oil guide section 1421 to extend into the cutter head 111. The inner hole sidewall of the cutter head 111 abuts against the inclined outer sidewall of the oil guide section 1421, so that the lubricating oil can directly enter the cutter head 111 through the oil guide sleeve 142, reducing the probability of lubricating oil overflowing between the cutter head 111 and the mounting seat 112, and further improving the lubrication efficiency of the cutter head 111. Meanwhile, the dimensional relationship between the oil guide part 1421 and the inner diameter of the cutter head 111 ensures that the lubricating oil can flow smoothly, and also prevents foreign objects such as waste material in the cutter head 111 from blocking the channel between the oil guide part 1421 and the cutter head 111 during the processing.

[0070] Based on any of the above embodiments, the tool assembly 11 can be further extended; such as... Figure 2 As shown, the tool assembly 11 also includes a mounting sleeve 116 and a locking sleeve 115. The mounting sleeve 116 is sleeved on the push rod 121 and acts between the mounting housing 13 and the mounting base 112. The outer side of the mounting sleeve 116 is provided with an external thread that mates with the mounting housing 13. The locking sleeve 115 is sleeved on the mounting base 112 and the mounting sleeve 116. One end of the locking sleeve 115 is threadedly connected to the mounting sleeve 116, and the other end is threadedly connected to the mounting base 112, thereby working together to connect the mounting housing 13 and the mounting base 112. The inner diameter of the mounting sleeve 116 is smaller than the inner diameter of the mounting base 112, thereby limiting the oil inlet assembly 14 disposed in the mounting base 112, so that the oil inlet assembly 14 can be stably located in the mounting base 112. Furthermore, when it is necessary to disassemble the tool assembly 11, the entire tool assembly 11 can be removed from the mounting housing 13 by unscrewing the connection between the mounting sleeve 116 and the mounting housing 13, so as to facilitate individual maintenance of the tool assembly 11. After disassembly, the oil inlet component 14 will not come out of the mounting base 112, thus preventing parts from falling out during disassembly.

[0071] In actual use, the various components of the hole-machining tool 1 work together. When machining a hole, the tool head 111 in the tool assembly 11 begins drilling the workpiece under the drive of a power source (such as a machine tool spindle). Due to the structural design of the tool head 111, the machining section 1113 can stably cut the workpiece. The limiting section 1112 and the mounting section 1111 ensure the stability of the tool head 111 during machining, preventing axial displacement. The clamping section 1121 of the mounting base 112 clamps the tool head 111 through the axial displacement of the tool holder 113, and the adjusting sleeve 114 further ensures the stability of this clamping. The drive assembly in the ejector mechanism 12 drives the ejector rod 121 in a timely manner according to the machining progress of the tool head 111, ejecting the waste material inside the tool head 111. The oil inlet assembly 14 continuously provides lubrication to the tool head 111, ensuring the machining accuracy and surface smoothness of the tool head 111. The entire hole machining tool 1 has a compact structure and reasonable design, which can effectively improve the quality and efficiency of hole machining and reduce machining costs.

[0072] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0073] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A hole-machining tool, characterized in that, include: The tool assembly (11) includes a tubular tool head (111) for hole machining. The ejection mechanism (12) includes a push rod (121) coaxially arranged with the cutter head (111) and a drive assembly for driving the push rod (121) to move axially within the cutter head (111); The travel distance of the push rod (121) is X1, and the processing distance of the cutter head (111) is X2, wherein X1>X2; The required hole depth is Y, where x2 > 1 / 2Y.

2. The hole-machining tool according to claim 1, characterized in that, It also includes a mounting housing (13), the two ends of which are connected to the tool assembly (11) and the ejection mechanism (12), respectively; The mounting housing (13) is provided with a cavity through which the top rod (121) passes axially; The mounting housing (13) has an oil inlet (131) at the side end near the tool assembly (11). The oil inlet (131) opens on the outer wall of the mounting housing (13) and communicates with the cavity.

3. The hole-making tool according to claim 2, characterized in that, The drive assembly includes a push rod (122) and a power component (123), the power component (123) being connected to the end of the mounting housing (13) away from the tool assembly (11); One end of the push rod (122) is connected to the power component (123), and the other end is fixedly connected to the top rod (121). The power component (123) is used to drive the push rod (122) to move axially.

4. The hole-making tool according to claim 2, characterized in that, It also includes an oil inlet assembly (14), which is located inside the tool assembly (11) and sleeved outside the push rod (121); There is a sliding gap between the push rod (121) and the cutter head (111) for lubricating oil to pass through.

5. The hole-machining tool according to claim 4, characterized in that, The oil inlet assembly (14) is provided with an oil inlet channel (141), the oil inlet end of the oil inlet channel (141) is connected to the cavity, and the oil outlet end of the oil inlet channel (141) is connected to the sliding gap.

6. The hole-machining tool according to claim 5, characterized in that, The oil inlet assembly (14) includes an elastic element (143) and an oil guide sleeve (142) arranged sequentially along the oil inlet direction. The elastic element (143) and the oil guide sleeve (142) are sleeved on the push rod (121). The oil outlet end of the oil guide sleeve (142) is at least partially located inside the cutter head (111), and an oil inlet channel (141) is formed between the oil guide sleeve (142) and the push rod (121). The elastic element (143) is used to provide an elastic force to the oil guide sleeve (142) in the direction of the cutter head (111).

7. The hole-making tool according to claim 6, characterized in that, The oil guide sleeve (142) has an oil guide part (1421) at the oil outlet end. The outer diameter of the oil guide part (1421) gradually decreases along the oil outlet direction. The oil guide part (1421) is at least partially located inside the cutter head (111). The outer diameter of the oil guide part (1421) at the end away from the cutter head (111) is larger than the inner diameter of the cutter head (111), and the outer diameter of the oil guide part (1421) extending into the cutter head (111) is smaller than the inner diameter of the cutter head (111).

8. The hole-machining tool according to claim 4, characterized in that, The tool assembly (11) includes a mounting base (112) and a tool holder (113). The mounting base (112) includes a connecting part (1126) and a clamping part (1121). The connecting part (1126) is used to connect with the mounting housing (13), and the clamping part (1121) is used to clamp the tool head (111). The tool holder (113) is sleeved on the mounting base (112), and the mounting base (112) can be displaced axially to adjust the size of the clamping part (1121).

9. The hole-making tool according to claim 8, characterized in that, The clamping part (1121) includes at least two clamping blocks (1122), which are arranged circumferentially, and have an adjustment groove (1123) between them. The mounting base (112) is provided with a mounting cavity (1124), the mounting cavity (1124) axially penetrates the clamping part (1121) and the connecting part (1126), and the adjusting groove (1123) communicates with the mounting cavity (1124); The outer diameter of the clamping block (1122) gradually increases along the oil outlet direction.

10. The hole-making tool according to claim 9, characterized in that, The mounting cavity (1124) has a threaded mounting part (1125) at one end near the mounting housing (13); The oil inlet assembly (14) also includes a limiting sleeve (144), and the outer side of the limiting sleeve (144) is provided with a threaded mating part that mates with the threaded mounting part (1125); The axial length of the threaded mounting portion (1125) is greater than the axial length of the threaded mating portion.

Images