Reamer for blind hole machining and blind hole machining method

Abstract

The present disclosure relates to a reamer for blind hole processing and a method for processing blind holes. The reamer includes: a cutter head having a first through hole, the cutter head being used to process the inner surface of the blind hole and clean debris inside the blind hole; a sleeve having a front end connected to a rear end of the cutter head, provided with a mounting groove that is radially opened and extends axially, a scale set axially on one circumferential side of the mounting groove, and a second through hole coaxial with the first through hole being provided at the front end of the sleeve; and a measuring rod being used to cooperate with the scale to confirm the depth of the blind hole. The reamer can process blind holes and clean debris inside the holes while processing, and can also accurately measure the hole depth, making the hole depth measurement more accurate. After the processing is completed, there is no need to clean the debris inside the hole, thereby improving the processing efficiency, reducing the processing steps, improving the accuracy of the blind hole, and saving time and equipment costs.

Description

Technical Field

[0001] The present disclosure relates to the field of mechanical processing, and in particular to a reamer for blind hole processing and a blind hole processing method. Background Art

[0002] Reamers are generally used for processing the inner surface of holes, mainly for expanding and repairing holes. When blind holes are opened with other tools (such as drill bits), debris may accumulate at the bottom of the blind hole. When blind holes are processed with a reamer, the inner wall of the blind hole is cut by the blade, which also produces a certain amount of debris. The debris will have an adverse effect on the accuracy of the blind hole. For example, when other workpieces are installed in the blind hole, the debris will prevent the workpiece from fully extending to the bottom of the blind hole, resulting in poor installation accuracy or even inability to complete the installation. When performing depth detection on the blind hole, the presence of debris will also cause errors in the depth detection, resulting in the depth value obtained being shallower than the actual blind hole depth, causing misjudgment and even requiring the blind hole to be further deepened and the inner wall processed, causing the blind hole to exceed the actual required depth, resulting in processing failure or equipment scrapping.

[0003] After blind hole machining, depth measurement is required to determine whether the blind hole meets machining standards. Debris can cause measurement errors. Furthermore, accurate hole depth measurement after using a reamer to drill, expand, and repair holes requires cleaning the hole of debris before measuring the depth. This requires extensive equipment, a complex process, and is time-consuming and costly. Summary of the Invention

[0004] To overcome the problems existing in the related art, exemplary embodiments of the present disclosure provide a reamer for blind hole machining and a method for machining a blind hole.

[0005] An exemplary embodiment of the first aspect of the present disclosure provides a reamer for blind hole processing, comprising: a cutter head, a cutting edge being provided on the circumferential side, and a first through hole extending axially therethrough, the cutter head being used to process the inner surface of the blind hole and clean debris in the blind hole; a sleeve, a front end of which is connected to the rear end of the cutter head, and is provided with a mounting groove which is radially opened and extends axially, a scale being provided axially on one circumferential side of the mounting groove, a second through hole which is coaxial with the first through hole being provided at the front end of the sleeve, and a rear end of the second through hole being connected to the mounting groove; a measuring rod, at least partially provided in the second through hole, and the rear end of the measuring rod being located in the mounting groove, the front end of the measuring rod being able to penetrate the first through hole to extend into the bottom of the blind hole, and the measuring rod being used to cooperate with the scale to confirm the depth of the blind hole.

[0006] In some embodiments, the reamer further comprises: a storage sheet disposed on the front end surface of the cutter head, wherein a receiving groove for storing debris is formed between the storage sheet and a surface opposite to the adjacent cutting edge.

[0007] In some embodiments, the storage sheet is in the shape of a hollow ring and is coaxially arranged on the front end face of the cutting head. The inner diameter of the storage sheet is greater than or equal to the inner diameter of the first through hole, the outer diameter of the storage sheet is greater than the minimum outer diameter of the cutting head, and the outer diameter of the storage sheet is less than or equal to the maximum outer diameter of the cutting head, wherein the minimum outer diameter of the cutting head is the diameter of the circumference where the root of the blade is located, and the maximum outer diameter of the cutting head is the diameter of the circumference where the tip of the blade is located.

[0008] In some embodiments, the storage sheet is made of metal and is fixedly connected to or integrally formed with the front end face of the blade head; or, the storage sheet is made of non-metallic material and is fixedly connected to the front end face of the blade head.

[0009] In some embodiments, the blade tip is magnetic and can attract debris.

[0010] In some embodiments, the measuring rod is made of a non-magnetic material.

[0011] In some embodiments, a fixing groove is further provided on the peripheral side of the mounting groove; a fixing rod is further provided on one side of the measuring rod, and the fixing rod can be clamped in the fixing groove to limit the axial movement of the measuring rod relative to the sleeve.

[0012] In some embodiments, the reamer further includes: an elastic clamp, which is sleeved on the radial outer side of the sleeve.

[0013] In some embodiments, the reamer further comprises: a connector connected to the rear end of the sleeve, for driving the sleeve and the cutter head to rotate and move axially.

[0014] In a second aspect, according to some other exemplary embodiments, the present disclosure also provides a method for processing a blind hole, comprising: inserting a reamer for blind hole processing as in the first aspect into the blind hole and rotating the reamer; processing the inner wall of the blind hole by the blade of the cutter head; cleaning debris in the blind hole by the cutter head; and confirming the depth of the blind hole by a measuring rod in conjunction with a scale.

[0015] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the reamer can process blind holes and clean the debris in the hole while processing, and can also accurately measure the hole depth, making the hole depth measurement more accurate. After the processing is completed, there is no need to clean the debris in the hole, which improves the processing efficiency, reduces the processing steps, improves the accuracy of the blind hole, and saves time and equipment costs.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present disclosure may be better understood by describing exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is an exploded schematic diagram of a reamer for blind hole machining according to an exemplary embodiment of the disclosure;

[0019] Figure 2 is an exploded schematic diagram of a reamer for blind hole machining according to another exemplary embodiment of the present disclosure;

[0020] Figure 3 is a schematic structural diagram of a cutter head according to an exemplary embodiment of the disclosure;

[0021] Figure 4 is a schematic structural diagram of a sleeve according to an exemplary embodiment of the disclosure;

[0022] Figure 5 is a schematic structural diagram of a measuring rod according to an exemplary embodiment of the disclosure;

[0023] Figure 6 1 is a schematic structural diagram of an elastic clamp according to an exemplary embodiment of the disclosure;

[0024] Figure 7 is a schematic structural diagram of a connector according to an exemplary embodiment of the disclosure;

[0025] Figure 8 is a schematic structural diagram of a reamer for blind hole machining according to an exemplary embodiment of the disclosure;

[0026] Figure 9 This is a schematic structural diagram showing a measuring rod installed in a sleeve according to an exemplary embodiment of the disclosure;

[0027] Figure 10 is a structural schematic diagram of a reamer for blind hole machining according to an exemplary embodiment of the disclosure;

[0028] Figure 11 It is a schematic diagram of the cutter head structure in a state where the front end of the measuring rod is extended into the cutter head according to an exemplary embodiment of the disclosure.

[0029] Reference numerals:

[0030] 100. Reamer;

[0031] 110, blade head; 111, blade; 112, first through hole; 113, storage sheet;

[0032] 120, sleeve; 121, mounting groove; 122, scale; 123, second through hole; 124, fixing groove;

[0033] 130, measuring rod; 131, fixing rod;

[0034] 140, elastic clamp;

[0035] 150, connector;

[0036] 200. Blind hole. DETAILED DESCRIPTION

[0037] The specific embodiments of the present disclosure will be described below. It should be noted that in the specific description of these embodiments, in order to provide a concise description, this specification cannot provide a detailed description of all the features of the actual embodiments. It should be understood that in the actual implementation of any embodiment, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one embodiment to another. In addition, it is also understandable that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by this disclosure, some design, manufacturing or production changes based on the technical content disclosed by this disclosure are just conventional technical means and should not be understood as the content of this disclosure being insufficient.

[0038] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the usual meaning understood by persons of ordinary skill in the technical field to which the present disclosure belongs. The words "first", "second" and similar terms used in the patent application description and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "connected" and similar terms are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0039] In order to solve the above technical problems, the present disclosure provides a reamer 100 for blind hole machining, such as Figure 1As shown, the reamer 100 may include a cutter head 110, a sleeve 120, and a measuring rod 130. The cutter head 110 may be provided with a cutting edge 111 on its circumference and a first through-hole 112 extending axially through the entire cutter head 110. The cutter head 110 is used to machine the inner surface of the blind hole 200 and clean debris within the blind hole 200. The cutting edge 111 can rotate within the blind hole 200 to cut the inner wall of the blind hole 200, thereby performing processes such as reaming and repairing the blind hole 200. Furthermore, the cutter head 110 provided by the present disclosure can clean debris while machining. By using suction or storage, debris can be removed when the reamer 100 is removed from the blind hole 200, thereby preventing debris from adversely affecting component installation and depth measurement, thereby improving the machining accuracy of the blind hole 200. Furthermore, there is no need to use additional processes or equipment to clean debris within the blind hole 200 after machining with the reamer 100. In some related technologies, the method of clearing debris by injecting gas into the blind hole 200 is not only prone to dust generation, but also incomplete and requires additional steps. The present disclosure utilizes the reamer head 110 to simultaneously clean the workpiece during the machining process, improving work efficiency. Furthermore, the head 110 is positioned within the blind hole 200 during machining and reaches deep into the bottom of the blind hole 200, enabling better debris removal compared to gas injection methods. The debris cleaning method described in the present disclosure can be to remove the debris as the head 110 exits the blind hole 200.

[0040] In some embodiments, the cutter head 110 can clean debris by adsorption. The cutter head 110 can have adsorption force, for example, the cutter head 110 can be fully or partially coated with glue that can stick to debris; the cutter head 110 can also be magnetic and adsorb debris by magnetism; the cutter head 110 can also be subjected to static electricity before entering the blind hole 200, and adsorb debris by static electricity. By adsorption, the debris can be adsorbed to the cutter head 110, and when the cutter head 110 leaves the blind hole 200, the debris is also taken away from the blind hole 200, thereby achieving the purpose of cleaning the debris. Because the cutter head 110 rotates in the blind hole 200 and penetrates to the bottom of the blind hole 200, it can adsorb debris at various positions in the blind hole 200, and the cleaning effect is good.

[0041] In some embodiments, the cutter head 110 can clean debris by collecting it. The cutter head 110 can have a groove or other space capable of accommodating debris. The groove can be provided on the side of the cutter head 110. The debris generated by the blade 111 rotating and cutting the inner wall of the blind hole 200 can be collected in the groove. The debris at the bottom of the blind hole 200 can also enter the groove during the rotation of the cutter head 110. When the cutter head 110 leaves the blind hole 200, the debris is also removed from the blind hole 200, thereby achieving the purpose of cleaning the debris.

[0042] In some embodiments, the cutter head 110 can clean debris by adsorption and storage, thereby achieving a better debris cleaning effect.

[0043] The front end of the sleeve 120 can be connected to the rear end of the cutter head 110. The front end of the sleeve 120 can be connected to the rear end of the cutter head 110 by means of threads, snaps, etc., and the two are relatively fixed. When the sleeve 120 rotates and moves axially, it can drive the cutter head 110 to rotate and move axially synchronously. The sleeve 120 can also be integrally formed with the cutter head 110, and the sleeve 120 serves as an extension section of the rear end of the cutter head 110, that is, the cutter head 110 is in the shape of a long rod, and a blade 111 is provided at the front end, and the rear end extends to form the sleeve 120. The sleeve 120 is provided with a mounting groove 121 that is radially opened and extends axially. The mounting groove 121 is provided on the side wall of the sleeve 120, is radially opened inward, and has a depth exceeding the radius of the sleeve 120. The front end of the sleeve 120 is also provided with a second through hole 123 that is coaxial with the first through hole 112, and the rear end of the second through hole 123 is connected to the mounting groove 121. The second through hole 123 can have the same inner diameter as the first through hole 112, and both can be greater than or equal to the diameter of the measuring rod 130, so that the measuring rod 130 can move axially within the channel formed by the second through hole 123 and the first through hole 112. In some embodiments, the sleeve 120 can be tightly connected to the cutter head 110 so that the second through hole 123 is connected to the first through hole 112. In other embodiments, the sleeve 120 and the cutter head 110 are integrally formed, and the first through hole 112 and the second through hole 123 can be formed into a complete through hole, one end of which is connected to the front end of the cutter head 110 and the other end is connected to the mounting groove 121. The inner diameter of the first through hole 112 can be larger than the second through hole 123, and the inner diameter of the second through hole 123 is greater than or equal to the diameter of the measuring rod 130, so that it is easier for the measuring rod 130 to pass through the second through hole 123 into the first through hole 112, avoiding the problem of the measuring rod 130 getting stuck in the process of passing from the second through hole 123 to the first through hole 112 due to processing errors. In addition, this setting can create a gap in the first through hole 112 between the inner wall of the first through hole 112 and the measuring rod 130, and some debris can be adsorbed or stored in the gap.

[0044] The aforementioned mounting groove 121 can be elongated, with its length oriented in the same direction as the axial direction, to facilitate insertion of the measuring rod 130 through the mounting groove 121 into the second through hole 123. The inner wall of the mounting groove 121 can be arc-shaped, providing a smooth transition with the second through hole 123. A scale 122 can be provided along the circumference of one side of the mounting groove 121. A scale 122 can be provided axially to the sides of the mounting groove 121. The scale 122 can be formed by side-by-side grooves or protrusions formed on the surface of the sleeve 120, or by a coating or adhesive material.

[0045] The measuring rod 130 is at least partially disposed within the second through-hole 123. The measuring rod 130 can be inserted into the second through-hole 123 via the mounting slot 121, with the rear end of the measuring rod 130 positioned within the mounting slot 121 to coordinate with the scale 122 for reading. A portion of the rod body is disposed within the second through-hole 123. In some cases, the measuring rod 130 can also be inserted into the first through-hole 112. The front end of the measuring rod 130 can be inserted into the first through-hole 112 to reach the bottom of the blind hole 200, and the measuring rod 130 is used to coordinate with the scale 122 to determine the depth of the blind hole 200. After the inner wall of the blind hole 200 is machined using the blade 111, the depth of the blind hole 200 can be measured without removing the reamer 100 from the blind hole 200. The front end face of the cutting head 110 can abut against the bottom of the blind hole 200, and the front end of the measuring rod 130 can also penetrate into the first through hole 112 and penetrate into the bottom of the blind hole 200. The actual depth of the blind hole 200 can be determined by the cooperation of the measuring rod 130 and the scale 122.

[0046] The reamer 100 of the disclosed embodiment can simultaneously perform processes such as reaming and repairing the blind hole 200 while cleaning existing or newly generated debris, thereby improving the accuracy of the blind hole 200 and ensuring the accuracy of depth measurement. Furthermore, the reamer 100 can also measure the depth of the blind hole 200. The disclosed reamer 100 simultaneously performs blind hole machining, debris cleaning, and depth measurement, efficiently completing these tasks without leaving the blind hole 200. This saves steps, improves efficiency, and ensures the accuracy of blind hole machining.

[0047] In some embodiments, as Figure 3As shown, the reamer 100 may further include a storage sheet 113 disposed on the front end face of the cutter head 110. A storage groove for storing debris is formed between the storage sheet 113 and the surface opposite the adjacent blades 111. In this embodiment, a narrow groove is formed between adjacent blades 111. The storage sheet 113 can be disposed on the front end face of the cutter head 110. The storage sheet 113 can completely or partially block the narrow groove formed between the adjacent blades 111 near the outlet of the front end face, thereby forming a storage groove capable of storing debris. Debris generated when the blades 111 cut the inner wall of the blind hole 200 can fall into the storage groove, avoiding deposition at the bottom of the blind hole 200. Alternatively, the storage sheet 113 can be relatively thin, for example, having an axial thickness of less than or equal to 1 mm. When the cutter head 110 rotates at the bottom of the blind hole 200, it can also carry some of the debris deposited at the bottom into the storage groove, thereby clearing the debris at the bottom. The storage sheet 113 can be a single piece connected to each blade 111 and forming a blocking structure between each pair of adjacent blades 111; or the storage sheet 113 can be multiple pieces, one located at the end of each pair of adjacent blades 111. By providing the storage sheet 113, a receiving groove can be formed, thereby efficiently cleaning debris from the blind hole 200 while the reamer 100 is processing the blind hole 200.

[0048] In some embodiments, as Figure 3 As shown, the storage sheet 113 can be in the shape of a hollow annular ring, coaxially arranged on the front end face of the cutter head 110, the inner diameter of the storage sheet 113 is greater than or equal to the inner diameter of the first through hole 112, the outer diameter of the storage sheet 113 is greater than the minimum outer diameter of the cutter head 110, and the outer diameter of the storage sheet 113 is less than or equal to the maximum outer diameter of the cutter head 110, wherein the minimum outer diameter of the cutter head 110 is the diameter of the circumference where the root of the blade 111 is located, and the maximum outer diameter of the cutter head 110 is the diameter of the circumference where the tip of the blade 111 is located. In the embodiment of the present disclosure, the storage sheet 113 can be in the shape of a circular ring, with a through hole in the middle, and the through hole can be coaxial with the first through hole 112 opened in the cutter head 110. The diameter of the through hole opened in the storage sheet 113 can be greater than or equal to the first through hole 112 of the cutter head 110, so as to avoid affecting the measurement of the hole depth by the measuring rod 130. The cutting head 110 is provided with a blade 111 on the circumference thereof. The blade 111 has a certain height. The circumference formed by the outer surface of the cutting head 110 at the root of each blade 111 is the minimum outer diameter of the cutting head 110, and the circumference formed by the tip of each blade 111 is the maximum outer diameter of the cutting head 110. The outer diameter of the storage sheet 113 is greater than the minimum outer diameter, so that a receiving groove closed on at least three sides can be formed between the storage sheet 113 and the adjacent blades 111. The outer diameter of the storage sheet 113 is less than or equal to the maximum outer diameter to avoid affecting the processing of the inner wall of the blind hole 200 by the blade 111. The circular shape of the storage sheet 113 makes it easier and more convenient to process and form a receiving groove capable of storing debris.

[0049] In some embodiments, the storage sheet 113 can be made of metal and fixedly connected to or integrally formed with the front end of the cutter head 110. The storage sheet 113 can be directly integrated into the cutter head 110 during processing, i.e., directly forming a receiving groove structure, which facilitates processing and ensures the strength of the entire reamer 100. Alternatively, the storage sheet 113 can be processed into a thin, annular sheet and fixed to the front end of the cutter head 110 by welding or clamping.

[0050] In some embodiments, the cutter head 110 may be magnetic and capable of absorbing debris. In the disclosed embodiment, the magnetism of the cutter head 110 can be used to absorb debris within the blind hole 200. In particular, when processing blind holes 200 made of metal materials, the generated metal debris can be conveniently and efficiently absorbed and cleaned through magnetic force. In some embodiments, the storage sheet 113 is made of a magnetic metal material. When the cutter head 110 is magnetic, the storage sheet 113 also has magnetism, thereby absorbing debris at the front end of the cutter head 110.

[0051] In some embodiments, the cutter head 110 may be made of metal and may be magnetized by a magnetizer to generate magnetism.

[0052] In some embodiments, the cutter head 110 can be made of a permanent magnet, or the cutter head 110 can be made of metal and include a portion of a permanent magnet. The permanent magnet provides magnetism, thereby making the cutter head 110 magnetic and capable of attracting debris. In some embodiments, the cutter head 110 can be made of metal and obtain magnetism by connecting to a permanent magnet. For example, the sleeve 120 itself is a permanent magnet or includes a permanent magnet.

[0053] In some embodiments, the tool head 110 is made of metal and is connected to a permanent magnet or electromagnet (e.g., an electromagnetic coil) to impart magnetism. The sleeve 120 can also be made of metal. By connecting a permanent magnet or electromagnet to the sleeve 120, magnetism is transferred to the tool head 110, imparting magnetism to the tool head 110. The measuring rod 130 can also be made of metal. By connecting a permanent magnet or electromagnet to the measuring rod 130, when the measuring rod 130 penetrates into the first through hole 112 and contacts the tool head 110, the tool head 110 becomes magnetic. In some cases, when the tool head 110 is machining a blind hole 200 in a metal material, the magnetic permanent magnet or electromagnet can be disconnected, rendering the tool head 110 non-magnetic. The permanent magnet and electromagnet can be external components of the reamer 100. When not in contact with the reamer 100, the reamer 100 becomes non-magnetic, thereby preventing the magnetic force between the tool head 110 and the metal material from increasing resistance to rotation and movement of the tool head 110. After the cutter head 110 has finished processing the inner wall of the blind hole 200 , a permanent magnet or an electromagnet may be connected to apply magnetic force to the cutter head 110 , thereby absorbing the debris in the blind hole 200 .

[0054] In some embodiments, the measuring rod 130 can be made of a permanent magnet, or it can be made of metal and connected to a permanent magnet or an electromagnet. During the process of the blade 111 of the cutter head 110 processing the inner wall of the blind hole 200, the measuring rod 130 can be inserted into the first through hole 112 and not connected to the cutter head 110. The sleeve 120 can also be made of a non-magnetic material, so that the cutter head 110 is non-magnetic, thereby preventing the magnetic force between the cutter head 110 and the metal material from increasing the resistance to the rotation and movement of the cutter head 110. After the cutter head 110 completes processing the inner surface of the blind hole 200, the measuring rod 130 is inserted into the first through hole 112 to measure the hole depth on the one hand and to apply magnetic force to the cutter head 110 on the other hand, thereby absorbing debris in the blind hole 200.

[0055] In some embodiments, the measuring rod 130 can also be made of a non-magnetic material. In this embodiment, the cutter head 110 can be magnetic, for example, by magnetizing it with a magnetizer or by being a permanent magnet. When measuring hole depth, debris can be more attracted to the cutter head 110, while the measuring rod 130 is non-magnetic. This prevents debris from being attracted to the front end of the measuring rod 130 and affecting the hole depth measurement, thereby improving the accuracy of the hole depth measurement.

[0056] In some embodiments, as Figure 4 As shown, the peripheral side of the installation groove 121 may also be provided with: a fixing groove 124; Figure 5 As shown, one side of the measuring rod 130 may also be provided with a fixing rod 131, which can be snapped into the fixing groove 124 to limit the axial movement of the measuring rod 130 relative to the sleeve 120. The fixing groove 124 may be a groove extending toward the circumference of the mounting groove 121 and connected to the mounting groove 121. The fixing rod 131 protrudes radially from the side wall of the measuring rod 130 and can be accommodated in the fixing groove 124, thereby limiting the axial movement of the measuring rod 130 relative to the sleeve 120. When the cutter head 110 is machining the inner wall of the blind hole 200, the measuring rod 130 is prevented from extending into the first through hole 112 or even passing out of the front end of the first through hole 112, thereby affecting the machining process. The fixing groove 124 may also include a section extending in the axial direction to better limit the fixing rod 131, prevent the fixing rod 131 from disengaging from the fixing groove 124 during the rotation of the reamer 100, and more reliably limit the axial movement of the measuring rod 130. On the other hand, the fixing rod 131 can also be used to measure the hole depth in conjunction with the scale 122 for reading. The distance between the fixing rod 131 and the front end of the measuring rod 130 is a fixed value. By coordinating with the scale 122, the hole depth can be easily obtained.

[0057] In some embodiments, as Figure 2 、 Figure 6As shown, the reamer 100 may further include an elastic clamp 140, which is mounted radially outside the sleeve 120. The elastic clamp 140 may be made of an elastic material, which can expand in diameter during installation and be fixed to the outside of the sleeve 120 through elastic force; or it may be made of a thin metal sheet and fixed to the outside of the sleeve 120 through the elasticity of metal deformation. The elastic clamp 140 can be fixed relative to the sleeve 120 when the reamer 100 is processing the inner wall of the blind hole 200. When the cutter head 110 is close to the bottom of the blind hole 200 to detect the hole depth, the elastic clamp 140 can be moved to the outer end face of the blind hole 200 to assist the measuring rod 130 and the scale 122 in taking readings to ensure measurement accuracy.

[0058] In some embodiments, as Figure 2 、 Figure 7 As shown, the reamer 100 may further include a connector 150 connected to the rear end of the sleeve 120 to drive the sleeve 120 and the cutter head 110 for rotation and axial movement. The connector 150 may be fixedly connected to the rear end of the sleeve 120 via threads or other means. The connector 150 facilitates manual operation to control the rotation or axial movement of the cutter head 110 within the blind hole 200. The connector 150 may also be connected to equipment such as a machine tool to perform blind hole machining.

[0059] Based on the same inventive concept, the present disclosure also provides a blind hole machining method, comprising: step S102, inserting a reamer 100 for blind hole machining, such as any of the aforementioned embodiments, into the blind hole 200 and rotating the reamer 100; step S104, machining the inner wall of the blind hole 200 using the blade 111 of the cutter head 110; step S106, cleaning debris from the blind hole 200 using the cutter head 110; and step S108, confirming the depth of the blind hole 200 using the measuring rod 130 in conjunction with the scale 122. The reamer 100 provided by the present disclosure can simultaneously clean debris and measure the depth during the machining of the blind hole 200, thereby improving the machining accuracy and efficiency of the blind hole 200.

[0060] The reamer 100's blade head 110, which includes a cutting edge 111, can be rotated to perform processes such as enlarging and repairing the inner wall of the blind hole 200. The blade head 110 can also remove debris from the blind hole 200 through suction and storage, thereby improving the accuracy of the blind hole 200 machining and ensuring the accuracy of hole depth measurement. The measuring rod 130, in conjunction with the scale 122, can confirm the depth of the blind hole 200, effectively completing hole depth measurement.

[0061] In some embodiments, the measuring rod 130 can be inserted into the cutter head 110, that is, close to the bottom of the blind hole 200, to confirm the corresponding position with the scale 122 and further confirm the hole depth. For example, if the length of the measuring rod 130 is known, Figure 11As shown, if the front end of the measuring rod 130 is flush with the front end of the cutter head 110, the relative position of the rear end of the measuring rod 130 and the scale 122 is scale mark X. Based on the current scale mark at the end of the measuring rod 130, it is determined whether the front end of the measuring rod 130 is close to the front end of the cutter head 110. If the rear end of the measuring rod 130 is at scale mark X, the depth of the blind hole 200 can be determined based on the scale mark corresponding to the outer end surface of the blind hole 200 (i.e., the outer surface of the device providing the blind hole). If the scale mark at the rear end of the measuring rod 130 is X+Y, it is possible that the front end of the measuring rod 130 is not close to the front end of the cutter head 110. For example, debris has accumulated in the blind hole 200, preventing the measuring rod 130 from fully extending to the front end. In this case, the depth of the blind hole 200 can still be determined based on the scale mark corresponding to the outer end surface of the blind hole 200. If the scale at the rear end of the measuring rod 130 is XZ, it may be that the cutter head 110 is not completely close to the bottom end of the blind hole 200, perhaps because the debris in the blind hole 200 blocks the advance of the cutter head 110. In this case, the hole depth can be calculated by adding Z to the scale value corresponding to the outer end face of the blind hole 200 to obtain the blind hole depth.

[0062] In some embodiments, as Figure 9 As shown, the measuring rod 130 of the reamer 100 is provided with a fixed rod 131, and the corresponding position relationship between the measuring rod 130 and the scale 122 can be confirmed according to the position of the fixed rod 131, that is, the scale position at the end of the measuring rod 130 is replaced, and the reading is performed through the fixed rod 131 and the scale 122, which is more accurate and reliable.

[0063] In some embodiments, the reamer 100 includes an elastic clamp 140 disposed outside the sleeve 120. When measuring the hole depth, the elastic clamp 140 can be moved to fit the outer surface of the blind hole 200, thereby assisting in reading and making the reading more accurate.

[0064] An exemplary operation process may be as follows:

[0065] like Figure 8 As shown, the reamer 100 is assembled, and then the scale value on the reamer sleeve 120 is calibrated;

[0066] Lift the fixing rod 131 of the measuring rod 130 upward to the mounting groove 121 and place it in the fixing groove 124 to prevent damage to the measuring rod 130 during cleaning;

[0067] like Figure 10 As shown, the reamer 100 is placed into the blind hole 200, and the reamer 100 is rotated to process the inner wall of the blind hole 200 and clean the debris at the same time;

[0068] After the inner wall is machined and debris is cleaned, the measuring rod 130 is inserted into the first through hole 112 and abuts against the bottom surface of the blind hole 200 , and the scale 122 corresponding to the measuring rod fixing rod 131 and the sleeve 120 is observed.

[0069] Measuring hole depth. Hole depth can be measured using two methods: direct reading and indirect calculation. In the measurement state of the reamer 100, A represents the measured hole depth, B represents the length from the bottom plane of the measuring rod fixing rod 131 to the front end of the measuring rod 130, C represents the distance from the reamer 100 to the bottom of the sleeve 120, and D represents the distance from the sleeve 120 to the measuring rod fixing rod 131.

[0070] When using the direct reading method, first observe whether the scale value on the sleeve 120 corresponding to the bottom plane of the measuring rod fixing rod 131 under the measuring state is consistent with B. If the corresponding scale value is consistent with B, fit the bottom of the elastic clamp 140 with the plane where the outside of the blind hole 200 is located. The scale value corresponding to the bottom of the elastic clamp 140 is the hole depth A.

[0071] If the scale mark on sleeve 120 corresponding to the bottom plane of measuring rod fixing rod 131 does not match B during measurement, an indirect measurement method can be used. This may be due to errors during assembly or use of reamer 100. In this case, assuming the scale mark on sleeve 120 corresponding to the bottom plane of measuring rod fixing rod 131 is B1, and the scale mark on the bottom of elastic clamp 140 is A1, then hole depth A = B - (B1 - A1).

[0072] This application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic associated with at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0073] In the context of this application, unless the context clearly indicates an exception, the words "a," "an," "an," and / or "the" do not refer to the singular and may include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or device may also include other steps or elements.

[0074] Similarly, it should be noted that, in order to simplify the description of this application and thus facilitate understanding of one or more embodiments of the application, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of the individual embodiments disclosed above.

[0075] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosure is merely illustrative and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the embodiments of the present application.

Claims

1. A reamer for blind hole machining, comprising: A cutter head is provided with a cutting edge on its circumferential side and is provided with a first through hole extending axially therethrough, the cutter head being used to process the inner surface of the blind hole and clean debris in the blind hole; A sleeve, the front end of which is connected to the rear end of the cutter head, is provided with a radially opened and axially extending mounting groove, a circumferential side of the mounting groove is provided with an axially arranged scale, and the front end of the sleeve is further provided with a second through hole coaxial with the first through hole, the rear end of the second through hole being connected to the mounting groove; a measuring rod, at least partially disposed in the second through hole, with a rear end of the measuring rod located in the mounting groove, a front end of the measuring rod capable of passing through the first through hole to extend into the bottom of the blind hole, and the measuring rod being used to cooperate with the scale to confirm the depth of the blind hole; Wherein, the peripheral side of the installation groove is further provided with: a fixing groove; One side of the measuring rod is further provided with: a fixing rod, which can be clamped in the fixing groove to limit the axial movement of the measuring rod relative to the sleeve.

2. The reamer for blind hole machining according to claim 1, wherein: The reamer also includes: A storage sheet is provided on the front end surface of the cutter head, and a receiving groove for storing debris is formed between the storage sheet and the surface opposite to the adjacent cutting edge.

3. The reamer for blind hole machining according to claim 2, wherein: The storage sheet is in the shape of a hollow ring and is coaxially arranged on the front end face of the cutter head. The inner diameter of the storage sheet is greater than or equal to the inner diameter of the first through hole, the outer diameter of the storage sheet is greater than the minimum outer diameter of the cutter head, and the outer diameter of the storage sheet is less than or equal to the maximum outer diameter of the cutter head, wherein the minimum outer diameter of the cutter head is the diameter of the circumference of the root of the blade, and the maximum outer diameter of the cutter head is the diameter of the circumference of the tip of the blade.

4. The reamer for blind hole machining according to claim 3, wherein: The storage sheet is made of metal and is fixedly connected to or integrally formed with the front end surface of the blade; or The storage sheet is made of non-metallic material and is fixedly connected to the front end surface of the cutter head.

5. The reamer for blind hole machining according to any one of claims 1 to 4, wherein: The cutter head is magnetic and can absorb debris.

6. The reamer for blind hole machining according to claim 5, wherein: The measuring rod is made of non-magnetic material.

7. The reamer for blind hole machining according to claim 1, wherein: The reamer further comprises an elastic clamp sleeved on the radial outer side of the sleeve.

8. The reamer for blind hole machining according to claim 1, wherein: The reamer further comprises: a connector connected to the rear end of the sleeve and used for driving the sleeve and the cutter head to rotate and move axially.

9. A method for processing a blind hole, comprising: Inserting the reamer for blind hole machining according to any one of claims 1 to 8 into the blind hole and rotating the reamer; Processing the inner wall of the blind hole by the cutting edge of the cutting head; cleaning debris in the blind hole by using the cutter head; The depth of the blind hole is confirmed by using the measuring rod in conjunction with the scale.

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