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 ejection mechanism and the cutter assembly are arranged at the two ends of the installation shell respectively, the cavity allowing the ejection rod to penetrate through is formed in the installation shell, and therefore the coaxiality precision of the ejection rod and the cutter is guaranteed, the machining precision of the cutter is guaranteed, the acting precision of the ejection rod on waste can be guaranteed, and the situation that the machining precision of the cutter is affected due to acting force deviation when the ejection rod pushes the waste is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of machining tools, and in particular to a hole machining tool. Background Art

[0002] In the prior art, when hole processing is required, drilling is mostly used for processing. The drilling tool and the workpiece move relative to each other and axially feed to process a hole on the workpiece. In the existing drilling processing, most of the processing tools are drill bits. During the rotation of the drill bit, it can not only meet the needs of hole generation, but also remove waste materials, and the work efficiency is relatively high.

[0003] However, when the drilling depth is large or the workpiece hardness is high, due to the structural characteristics of the drill bit, the drill bit will produce a "deviation" phenomenon, that is, the drill bit bends and the axis of the hole is skewed, causing the hole diameter to expand and the hole to be out of round, thereby greatly reducing the processing accuracy and the workpiece processing yield.

[0004] Therefore, there is room for further improvement in the hole machining tools in the prior art. Summary of the invention

[0005] In view of this, in order to solve the technical problem that drill-type tools are used for hole processing in the above-mentioned prior art, resulting in low precision of the processed holes, the present application provides a hole processing tool, which is provided with a tubular tool head and an ejection mechanism. The tubular tool head is used for processing holes to achieve high-precision processing, and the ejection mechanism is used to eject waste materials in the tubular tool head to avoid affecting the tool head processing and improve the processing efficiency.

[0006] The present application provides a hole machining tool, comprising:

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

[0008] The ejection mechanism comprises an ejector rod coaxially arranged with the cutter head, and a driving assembly for driving the ejector rod to axially displace in the cutter head;

[0009] The housing is installed, and its two ends are respectively connected with the tool assembly and the ejection mechanism, and the housing includes a cavity for the ejector rod to pass axially.

[0010] Compared with the prior art, the hole processing tool provided by the present application is provided with a tubular cutter head, which can directly process holes on the workpiece with high precision; at the same time, an ejection mechanism is also provided to cooperate with the tubular cutter head, and when the cutter head drills a hole on the workpiece, the drilling waste remains in the cutter head; the ejection mechanism includes a push rod and a driving assembly, the push rod is arranged in the cutter head, and the push rod is coaxially arranged with the cutter head. When the driving assembly drives the push rod to axially displace, the push rod pushes the waste in the cutter head, thereby pushing the waste in the cutter head out, and then the hole processing tool of the present application can not only ensure the hole processing accuracy, but also eject the waste, without affecting the hole generation, thereby improving the work efficiency and increasing the processing accuracy; at the same time, the present application also provides an installation shell, the ejection mechanism and the tool assembly are respectively arranged at both ends of the installation shell, and a cavity for the push rod to pass through is provided on the installation shell, thereby ensuring the coaxiality accuracy of the push rod and the tool, so as to ensure the processing accuracy of the tool, and at the same time, it can also ensure the action accuracy of the push rod on the waste, and avoid the displacement of the force when the push rod pushes the waste and affecting the processing accuracy of the tool.

[0011] Preferably, it further comprises an oil inlet assembly, wherein the oil inlet assembly is located inside the tool assembly and sleeved outside the ejector rod;

[0012] There is a sliding gap between the ejector rod and the cutter head;

[0013] The oil inlet assembly comprises an oil inlet channel, an oil outlet end of the oil inlet channel is in communication with the sliding gap, and an oil inlet end of the oil inlet channel is in communication with the cavity.

[0014] Preferably, the oil inlet assembly comprises an elastic member and an oil guide sleeve sequentially arranged along the oil inlet direction of the lubricating oil, and the elastic member and the oil guide sleeve are sleeved on the push rod;

[0015] The oil outlet end of the oil guide sleeve is at least partially located in the cutter head, so as to be used for introducing lubricating oil into the cutter head;

[0016] The elastic member is used to provide an elastic force to the oil guide sleeve in the direction of the cutter head.

[0017] Preferably, the oil outlet end of the oil guide sleeve is provided with an oil guide portion, 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;

[0018] 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.

[0019] Preferably, the driving assembly comprises a push rod and a power member, and the power member is connected to the end of the mounting housing away from the tool assembly;

[0020] One end of the push rod is connected to the power piece, and the other end is fixedly connected to the push rod. The power piece is used to drive the push rod to axially move.

[0021] Preferably, the moving stroke of the ejector pin is X1, and the processing stroke of the cutter head is X2, wherein X1>X2;

[0022] The required processing hole depth is Y, where x2>1 / 2Y.

[0023] Preferably, an oil inlet hole is provided at a side end of the mounting shell close to the tool assembly, the oil inlet hole opens at an outer side wall of the mounting shell, and the oil inlet hole is communicated with the cavity.

[0024] Preferably, the tool assembly comprises a mounting seat and a tool holder, the mounting seat comprises a connecting portion and a clamping portion, the connecting portion is used to connect with the mounting housing, and the clamping portion is used to clamp the tool head;

[0025] Wherein, the tool holder is sleeved on the mounting seat, and the mounting seat can be displaced axially to adjust the size of the clamping portion.

[0026] Preferably, the clamping portion comprises at least two clamping blocks, the clamping blocks are arranged along the circumferential direction, and an adjustment groove is provided between the clamping blocks;

[0027] The mounting seat is provided with a mounting cavity, the mounting cavity axially passes through the clamping portion and the connecting portion, and the adjusting groove is communicated with the clamping cavity;

[0028] Wherein, the outer diameter of the clamping block gradually increases along the oil outlet direction.

[0029] Preferably, a threaded mounting portion is provided at one end of the mounting cavity close to the mounting housing;

[0030] The oil inlet assembly further comprises a limiting sleeve, and a threaded matching portion matching with the threaded mounting portion is provided on the outer side of the limiting sleeve;

[0031] Wherein, the axial length of the threaded mounting portion is greater than the axial length of the threaded fitting portion.

[0032] A hole machining tool of the present application has at least the following technical effects:

[0033] 1. By setting a tubular cutter head, the hole processing can be ensured while ensuring the processing accuracy; at the same time, the ejection mechanism is set to cooperate with the cutter head to remove the waste in the cutter head to avoid affecting the processing of the hole by the cutter head;

[0034] 2. By setting up the oil inlet assembly, the lubricating oil can be guided into the cutter head, so that the cutter head hole processing is smooth and fluent without jamming, ensuring the surface smoothness of the formed hole;

[0035] 3. By providing an oil guide sleeve and an elastic member, the oil outlet end of the oil guide sleeve is at least partially located in the cutter head, thereby ensuring that the lubricating oil can be introduced into the cutter head, and the elastic member provides an axial elastic force to the oil guide sleeve, so that the oil guide sleeve has a tendency to always approach 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;

[0036] 4. By setting the machining stroke of the cutter head to be greater than 1 / 2 of the machining hole depth, the cutter head can use double-sided machining to perform hole machining, shortening the machining stroke and thus ensuring machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of a hole processing tool provided in one embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a hole machining tool provided in an embodiment of the present application. Figure 1 ;

[0039] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a hole machining tool provided in an embodiment of the present application. Figure 2 ;

[0040] Figure 4 yes Figure 2 A schematic diagram of a local A enlargement;

[0041] Figure 5 is a schematic diagram of the three-dimensional structure of a mounting base provided in one embodiment of the present application;

[0042] Figure 6 is a schematic cross-sectional structure diagram of a mounting base provided in one embodiment of the present application;

[0043] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of a cutter head provided in one embodiment of the present application.

[0044] Reference numerals: 1. hole processing tool;

[0045] 11. Tool assembly; 12. Ejection mechanism; 13. Mounting housing; 14. Oil inlet assembly;

[0046] 111, cutter head; 112, mounting seat; 113, cutter seat; 114, adjusting sleeve; 115, locking sleeve; 116, mounting sleeve; 1111, mounting part; 1112, limiting part; 1113, processing part;

[0047] 1121, clamping part; 1122, clamping block; 1123, adjusting groove; 1124, mounting cavity; 1125, threaded mounting part; 1126, connecting part;

[0048] 121. ejector rod; 122. push rod; 123. power member;

[0049] 131, oil inlet hole;

[0050] 141. Oil inlet channel; 142. Oil guide sleeve; 143. Elastic member; 144. Limit sleeve; 1421. Oil guide part. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0052] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0053] Those skilled in the art should understand that, in the disclosure of the present application, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0054] The present application is further described in detail below in conjunction with the accompanying drawings. Figures 1 to 7 illustrate.

[0055] The present application provides a hole machining tool 1, which is used for performing hole machining on a workpiece; Figures 1 to 3As shown, the hole processing tool 1 includes a mounting shell 13, an ejection mechanism 12 and a tool assembly 11. The mounting shell 13 is a straight cylinder structure, and a cavity is provided therein for installing the ejection mechanism 12 and the tool assembly 11. The two ends of the cavity are provided with threads, and the ejection mechanism 12 and the tool assembly 11 are respectively connected to the two ends of the mounting shell 13 through the threads in the cavity; the tool assembly 11 is used for hole processing on the workpiece, wherein the ejection mechanism 12 extends through the cavity toward the tool assembly 11 to extend into the tool assembly 11, and the ejection mechanism 12 is used to squeeze the waste material in the tool assembly 11 out of the tool assembly 11; the mounting shell 13 provides installation space for the tool assembly 11 and the ejection mechanism 12, and provides moving space for the ejection mechanism 12, so as to ensure that the ejection mechanism 12 and the tool assembly 11 have good coaxial accuracy, so as to ensure the processing accuracy of the tool, and at the same time, it can also ensure the action accuracy of the ejection mechanism 12 on the waste material in the tool assembly 11, and avoid the offset of the action force when the ejection mechanism 12 pushes the waste material and affects the processing accuracy of the tool assembly 11.

[0056] Specifically, the tool assembly 11 is further described; Figure 1 to Figure 2 As shown, the tool assembly 11 includes a tool head 111, a mounting seat 112 and a tool seat 113, wherein the tool head 111 is a tubular structure. When it acts on a workpiece, a hole is directly formed with the outer diameter of the tool head 111, and waste of a columnar structure is retained in the tool head 111. The tool head 111 of the tubular structure has good processing accuracy and will not have the "lead deviation" phenomenon, so the hole processing accuracy is good. Figure 2 , Figures 4 to 6 As shown, the mounting seat 112 as a whole is close to a cylindrical structure, one end of the mounting seat 112 is connected to the mounting shell 13, and the other end is connected to the cutter head 111. An axially penetrating mounting cavity 1124 is provided in the mounting seat 112, and the cutter head 111 is inserted into the mounting cavity 1124, and the mounting seat 112 clamps the cutter head 111; the cutter seat 113 is sleeved on the mounting seat 112, and the cutter seat 113, the mounting seat 112, and the cutter head 111 are coaxially arranged.

[0057] Among them, Figure 5 , Figure 6 As shown, the mounting seat 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 cutter head 111; Figure 2As shown, the tool holder 113 is arranged at the clamping part 1121, and the mounting seat 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, and the clamping blocks 1122 are arranged along the circumferential direction. There are adjustment grooves 1123 between the clamping blocks 1122, that is, there is a gap between the clamping blocks 1122, and the outer diameter of the clamping blocks 1122 gradually increases along the oil outlet direction. The outer end surface of the clamping block 1122 is inclined to the axis, so that the outer side of the clamping part 1121 forms an eight-shaped shape; the installation cavity 1124 axially penetrates the clamping part 1121 and the connecting part 1126, and the adjustment groove 1123 is open on the outer side of the clamping part 1121, and the adjustment groove 1123 is connected to the clamping cavity, so that the size of the installation cavity 1124 at the clamping part 1121 can be adjusted; the tool holder 113 is sleeved On the clamping portion 1121, 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 portion 1121, applying a radial force to the clamping portion 1121, and the adjustment groove 1123 between the clamping blocks 1122 gives the clamping blocks 1122 space to move, so that the clamping blocks 1122 are radially retracted, thereby reducing the inner diameter of the mounting cavity 1124 at the clamping blocks 1122, thereby achieving a better clamping effect on the tool head 111, and can also be adjusted for tool heads 111 of different outer diameters, so that the mounting seat 112 can adapt to tubular tool heads 111 of different sizes, thereby increasing the applicability of the hole processing tool 1.

[0058] In this embodiment, the angle θ2 between the inclined surface of the outer end of the clamping block 1122 and the straight surface parallel to the axial direction is an obtuse angle; wherein θ2 is set at any one of 150°, 160° or 170°, so that when the tool holder 113 applies an axial force to the clamping block 1122, it can be better converted into a radial force through the inclined surface of the clamping block 1122, so as to adjust the adjustment groove 1123 more stably and quickly, thereby adjusting the size of the installation cavity 1124.

[0059] like Figure 2 As shown, the inner side of the end of the blade holder 113 close to the blade head 111 is provided with an inclined surface corresponding to the inclined outer end surface of the clamping portion 1121 to ensure the fit between the blade holder 113 and the mounting seat 112, thereby ensuring the stability of the blade holder 113 in adjusting the size of the mounting cavity 1124 of the clamping portion 1121 of the mounting seat 112. Figure 5 , Figure 6 As shown, the outer side of the connecting portion 1126 is provided with a thread, and an adjusting sleeve 114 is disposed outside the connecting portion 1126. The adjusting sleeve 114 is threadedly connected to the connecting portion 1126, and the adjusting sleeve 114 can be rotated along the thread to change the setting position of the adjusting sleeve 114; Figure 2As shown, the tool holder 113 is at least partially located on the connecting portion 1126, and the side end of the adjusting sleeve 114 close to the tool head 111 is fitted with the tool holder 113. The adjusting sleeve 114 has a limiting effect on the axial displacement of the tool holder 113, and can lock the tool holder 113, thereby ensuring the stability of the tool holder 113 in adjusting the size of the mounting cavity 1124 of the clamping portion 1121, thereby ensuring the stability of the mounting seat 112 in fixing the tool head 111.

[0060] Further, such as Figure 2 , Figure 4 As shown, radially arranged oil holes are provided on the tool holder 113 , so that lubricating oil can enter between the tool holder 113 and the mounting seat 112 through the oil holes to lubricate the two and avoid displacement jamming between the tool holder 113 and the mounting seat 112 .

[0061] Further, such as Figure 7 As shown, the cutter head 111 includes a mounting portion 1111, a limiting portion 1112 and a processing portion 1113 which are sequentially arranged along the axial direction. The mounting portion 1111 is arranged in the mounting seat 112, and the outer wall of the mounting portion 1111 is in contact with the inner wall of the mounting seat 112. The processing portion 1113 is used for hole processing. The radial thickness of the mounting portion 1111 is greater than the radial thickness of the processing portion 1113, so that the connection stability between the cutter head 111 and the mounting seat 112 is better; the limiting portion 1112 is located in the processing portion Between 1113 and the mounting portion 1111, the outer diameter of the limiting portion 1112 is larger than the outer diameters of the mounting portion 1111 and the processing portion 1113, thereby forming a limiting step. The limiting step acts on the outer side wall of the mounting seat 112 to axially limit the processing portion 1113. When the processing portion 1113 acts on the workpiece, the processing portion 1113 is subjected to a force in the direction of the mounting seat 112. Under the action of the limiting portion 1112, it can be ensured that the processing portion 1113 does not move in the axial direction.

[0062] Based on any of the above embodiments, the ejection mechanism 12 is further described; Figures 1 to 3 As shown, the ejection mechanism 12 includes an ejector rod 121 and a driving assembly, the driving assembly is radially fixed to the mounting housing 13, and the driving assembly is axially connected to the ejector rod 121; the ejector rod 121 is a rod-shaped structure, and the ejector rod 121 passes through the mounting housing 13 and the mounting seat 112 and extends into the cutter head 111, and the driving 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 then the processing waste in the cutter head 111 can be ejected to avoid affecting the processing of the cutter head 111. In this embodiment, the outer diameter of the portion of the ejector rod 121 located in the cutter head 111 is smaller than the inner diameter of the cutter head 111, so as to avoid friction between the ejector rod 121 and the cutter head 111.

[0063] Among them, Figure 3As shown, the driving assembly includes a push rod 122 and a power piece 123. The power piece 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 piece 123, and the other end is fixedly connected to the push rod 121. The power piece 123 is used to drive the push rod 122 to axially move. In this embodiment, the power piece 123 is a cylinder or oil cylinder-like component, and the push rod 122 can be a piston rod of the cylinder or oil 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; and the driving stroke of the power piece 123 for the push rod 121 is X1, that is, the moving stroke of the push rod 121 is X1, and the processing stroke of the cutter head 111 is X2, that is, the length of the processing portion 1113 of the cutter head 111 is X2, wherein X1>X2 That is, it is necessary to ensure that when the push rod 121 is driven to the maximum stroke, the end of the push rod 121 can exceed the end of the cutter head 111, so as to ensure that the waste in the cutter head 111 can be completely pushed out; at the same time, when the moving stroke of the push rod 121 is the minimum, it is necessary to ensure that the end of the push rod 121 does not extend into the processing part 1113, and can be located in the mounting part 1111 or the limiting part 1112, so as to avoid the push rod 121 from contacting with the waste when the processing part 1113 is processed, thereby affecting the hole processing.

[0064] It should be noted that in the present application, the required processing hole depth is Y, where x2>1 / 2Y, that is, the processing stroke of the cutter head 111 is set to be greater than 1 / 2 of the processing hole depth, so that the cutter head 111 can use a double-sided processing method to perform hole processing, shortening the processing stroke, reducing the processing difficulty, and improving the accuracy of hole processing, further avoiding the occurrence of the "deviation" phenomenon.

[0065] Based on any of the above embodiments, the hole machining tool 1 is further described; Figures 1 to 4 As shown, the hole processing tool 1 also includes an oil inlet assembly 14, which is located in the mounting seat 112 and is sleeved outside the push rod 121. The oil inlet assembly 14 forms an oil inlet channel 141 in the mounting seat 112. The side end of the mounting shell 13 close to the tool assembly 11 is provided with a radially arranged oil inlet hole 131, and the oil inlet hole 131 opens on the outer wall of the mounting shell 13, and the oil inlet hole 131 is connected to the cavity; the outer diameter of the push rod 121 is smaller than the cavity diameter, and smaller than the diameter of the mounting cavity 1124, so that the oil inlet channel 141 is connected to the cavity; because the push rod 121 is located The outer diameter of the cutter head 111 is smaller than the inner diameter of the cutter head 111, so that there is a sliding gap between the push rod 121 and the cutter head 111, the oil outlet end of the oil inlet channel 141 is connected to the sliding gap, and the oil inlet end of the oil inlet channel 141 is connected to the cavity; when the 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, and then lubricate the cutter head 111 to ensure the smoothness of the cutter head 111 when drilling, so that the hole processing of the cutter head 111 is smooth and fluent without jamming, thereby ensuring the surface smoothness of the formed hole.

[0066] Further, such as Figure 2 , Figure 4 As shown, the oil inlet assembly 14 includes a limiting sleeve 144, an elastic member 143 and an oil guide sleeve 142 which are sequentially arranged along the oil inlet direction of the lubricating oil. The limiting sleeve 144, the elastic member 143 and the oil guide sleeve 142 are sleeved on the top rod 121. The elastic member 143 is located between the limiting sleeve 144 and the oil guide sleeve 142. One end of the elastic member 143 abuts against the limiting sleeve 144, and the other end abuts against the oil guide sleeve 142. Figure 2 , Figure 6 As shown, a threaded mounting portion 1125 is provided at one end of the mounting cavity 1124 close to the mounting shell 13, that is, an internal thread is provided inside the mounting seat 112, and a threaded matching portion matching with the threaded mounting portion 1125 is provided on the outer side of the limiting sleeve 144, that is, an external thread is provided on the outer side of the limiting sleeve 144, and the limiting sleeve 144 is threadedly connected in the mounting seat 112 and connected to the mounting seat 112, thereby limiting the elastic member 143 and the oil guide sleeve 142 in the mounting seat 112; the elastic member 143 therefore generates an axial elastic force, which acts on the oil guide sleeve 142, so that the oil guide sleeve 142 has a tendency to always approach the cutter head 111.

[0067] In this embodiment, if Figure 4 As shown, the elastic member 143 is a spring; the inner diameter of the oil guide sleeve 142 is larger than the outer diameter of the push rod 121, so that there is an oil gap between the oil guide sleeve 142 and the push rod 121, and the oil outlet end of the oil guide sleeve 142 is at least partially located in the cutter head 111, which can ensure that the oil gap and the sliding gap are connected, so that the lubricating oil can flow into the sliding gap through the oil gap, thereby introducing the lubricating oil into the cutter head 111; and the elastic force provided by the elastic member 143 to the oil guide sleeve 142 can make the oil guide sleeve 142 always close to the cutter head 111, ensure the direct conduction performance between the oil gap and the sliding gap, ensure that the lubricating oil can always be introduced into the cutter head 111, and ensure the lubrication effect on the cutter head 111.

[0068] It should be noted that, in the present embodiment, the axial length of the threaded mounting portion 1125 is greater than the axial length of the threaded mating portion, so that the setting position of the limiting sleeve 144 in the mounting seat 112 can be adjusted, and then the distance between the limiting sleeve 144 and the oil guide sleeve 142 can be changed, that is, the axial space for placing the elastic member 143 is changed, thereby changing the elastic force of the elastic member 143 on the oil guide sleeve 142, so as to adjust the elastic force for oil guide sleeves 142 of different specifications, thereby ensuring that the oil guide sleeve 142 is always in close contact with the cutter head 111 to ensure the conductivity of the lubricating oil.

[0069] Further, such as Figure 4As shown, an oil guiding portion 1421 is provided at the oil outlet end of the oil guiding sleeve 142, and the outer diameter of the oil guiding portion 1421 gradually decreases along the oil outlet direction, so that the oil guiding portion 1421 forms a conical structure, and the outer side surface of the oil guiding portion 1421 is an inclined surface, and the end of the oil guiding portion 1421 is smaller; the outer diameter of the end of the oil guiding portion 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 guiding portion 1421 is smaller than the inner diameter of the cutter head 111, so that the end of the oil guiding portion 1421 can extend into the cutter head 111, and the side wall of the inner hole of the cutter head 111 abuts against the inclined outer side wall of the oil guiding portion 1421, so that the lubricating oil can directly enter the cutter head 111 through the oil guiding sleeve 142, reducing the probability of the lubricating oil overflowing between the cutter head 111 and the mounting seat 112, and further improving the lubrication efficiency of the cutter head 111. At the same time, the size relationship between the oil guide portion 1421 and the inner diameter of the cutter head 111 ensures that the lubricating oil can flow in smoothly, and prevents foreign matter such as waste in the cutter head 111 from blocking the channel between the oil guide portion 1421 and the cutter head 111 during the processing.

[0070] Further, such as Figure 4 As shown, an angle θ1 is formed between the outer inclined surface of the oil guide portion 1421 and the outer parallel surface of the guiding sleeve 142 parallel to the oil outlet axis, wherein θ1 is an acute angle. In the present embodiment, θ1 is set at any one of 25°, 26°, 27°, 28°, 29° or 30°, so that the oil guide portion 1421 has better structural strength while ensuring better oil guide effect.

[0071] Based on any of the above embodiments, the tool assembly 11 is further expanded; 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 the mounting sleeve 116 acts between the mounting shell 13 and the mounting seat 112. The outer side of the mounting sleeve 116 is provided with an external thread that cooperates with the mounting shell 13; the locking sleeve 115 is sleeved on the mounting seat 112 and the mounting sleeve 116, and 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 seat 112, so as to cooperate with each other to realize the connection between the mounting shell 13 and the mounting seat 112; wherein, the inner diameter of the mounting sleeve 116 is smaller than the inner diameter of the mounting seat 112, thereby forming a limit for the oil inlet assembly 14 arranged in the mounting seat 112, so that the oil inlet assembly 14 can be stably located in the mounting seat 112. Furthermore, when the tool assembly 11 needs to be disassembled, the entire tool assembly 11 can be disassembled from the mounting shell 13 by directly unscrewing the connection between the mounting sleeve 116 and the mounting shell 13, so that the tool assembly 11 can be repaired separately, and after disassembly, the oil inlet assembly 14 will not fall out of the mounting seat 112, avoiding the scattering of parts during disassembly.

[0072] In actual use, the various components of the hole processing tool 1 work together; when hole processing is performed, the cutter head 111 in the tool assembly 11 starts drilling the workpiece under the drive of a power source (such as a machine tool spindle, etc.). Due to the structural design of the cutter head 111, the processing portion 1113 can stably cut the workpiece, and the limiting portion 1112 and the mounting portion 1111 ensure the stability of the cutter head 111 during the processing, and there will be no axial deviation. The clamping portion 1121 of the mounting seat 112 clamps the cutter head 111 through the axial displacement of the cutter seat 113, and the adjusting sleeve 114 further ensures the stability of this clamping. The driving component in the ejection mechanism 12 drives the ejector rod 121 in a timely manner according to the processing progress of the cutter head 111 to eject the waste material in the cutter head 111. The oil inlet component 14 continuously provides lubrication for the cutter head 111 to ensure the processing accuracy and surface smoothness of the cutter head 111. The entire hole machining tool 1 has a compact structure and a reasonable design, and can effectively improve the quality and efficiency of hole machining and reduce machining costs.

[0073] It should be noted that the various embodiments of the present application can be arbitrarily combined into a new embodiment if the solutions do not conflict and the technical solutions can coexist.

[0074] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A hole processing tool, characterized in that: include: A tool assembly (11) comprising a tubular tool head (111) for hole machining; An ejection mechanism (12) comprises an ejector rod (121) coaxially arranged with the cutter head (111), and a drive assembly for driving the ejector rod (121) to axially displace in the cutter head (111); The housing (13) is installed, and its two ends are respectively connected to the tool assembly (11) and the ejection mechanism (12), and it includes a cavity for the ejector rod (121) to pass axially.

2. The hole machining tool according to claim 1, characterized in that: It also includes an oil inlet assembly (14), wherein the oil inlet assembly (14) is located inside the tool assembly (11) and is sleeved outside the push rod (121); A sliding gap is provided between the push rod (121) and the cutter head (111); The oil inlet assembly (14) comprises an oil inlet channel (141), an oil outlet end of the oil inlet channel (141) is in communication with the sliding gap, and an oil inlet end of the oil inlet channel (141) is in communication with the cavity.

3. The hole machining tool according to claim 2, characterized in that: The oil inlet assembly (14) comprises an elastic member (143) and an oil guide sleeve (142) which are sequentially arranged along the lubricating oil inlet direction, and the elastic member (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) so as to be used for guiding lubricating oil into the cutter head (111); The elastic member (143) is used to provide an elastic force to the oil guide sleeve (142) in a direction toward the cutter head (111).

4. The hole machining tool according to claim 3, characterized in that: An oil guide portion (1421) is provided at the oil outlet end of the oil guide sleeve (142), the outer diameter of the oil guide portion (1421) gradually decreases along the oil outlet direction, and at least a portion of the oil guide portion (1421) is located inside the cutter head (111); The outer diameter of the end of the oil guide portion (1421) away from the cutter head (111) is greater than the inner diameter of the cutter head (111), and the outer diameter of the oil guide portion (1421) extending into the cutter head (111) is smaller than the inner diameter of the cutter head (111).

5. The hole machining tool according to claim 1, characterized in that: The driving assembly comprises a push rod (122) and a power member (123), wherein the power member (123) is connected to an end of the mounting housing (13) away from the tool assembly (11); One end of the push rod (122) is connected to the power piece (123), and the other end is fixedly connected to the push rod (121). The power piece (123) is used to drive the push rod (122) to axially displace.

6. The hole machining tool according to claim 1, characterized in that: The moving stroke of the ejector rod (121) is X1, and the processing stroke of the cutter head (111) is X2, wherein X1>X2; The required processing hole depth is Y, where x2>1 / 2Y.

7. The hole machining tool according to claim 1, characterized in that: An oil inlet hole (131) is provided at a side end of the mounting shell (13) close to the tool assembly (11); the oil inlet hole (131) opens on an outer wall of the mounting shell (13); and the oil inlet hole (131) is communicated with the cavity.

8. The hole machining tool according to claim 2, characterized in that: The tool assembly (11) comprises a mounting seat (112) and a tool seat (113); the mounting seat (112) comprises a connecting portion (1126) and a clamping portion (1121); the connecting portion (1126) is used to connect to the mounting housing (13); and the clamping portion (1121) is used to clamp the tool head (111); The knife seat (113) is sleeved on the mounting seat (112), and the mounting seat (112) can be displaced in the axial direction to adjust the size of the clamping portion (1121).

9. The hole machining tool according to claim 8, characterized in that: The clamping portion (1121) comprises at least two clamping blocks (1122), the clamping blocks (1122) are arranged along the circumferential direction, and an adjustment groove (1123) is provided between the clamping blocks (1122); The mounting seat (112) is provided with a mounting cavity (1124), the mounting cavity (1124) axially penetrates the clamping portion (1121) and the connecting portion (1126), and the adjustment groove (1123) is in communication with the clamping cavity; Wherein, the outer diameter of the clamping block (1122) gradually increases along the oil outlet direction.

10. The hole machining tool according to claim 9, characterized in that: A threaded mounting portion (1125) is provided at one end of the mounting cavity (1124) close to the mounting housing (13); The oil inlet assembly (14) further comprises a limiting sleeve (144), and a threaded matching portion matching with the threaded mounting portion (1125) is provided on the outer side of the limiting sleeve (144); Wherein, the axial length of the threaded mounting portion (1125) is greater than the axial length of the threaded fitting portion.

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