A step bore boring tool capable of being assembled in both directions

Abstract

The application relates to the technical field of boring tools, and discloses a step inner hole boring tool capable of being assembled in positive and reverse directions, which comprises a boring tool body, a visual mechanism and a sound recognition mechanism arranged in the boring tool body, the visual mechanism comprises two transparent glasses, each of which is fixedly embedded on the surface of the boring tool body, two scale bands, each of which is arranged in the inner cavity of the boring tool body, the scale surface of each scale band faces the transparent glass, two blade mounting seats, each of which is slidingly arranged in the inner cavity of the boring tool body, and two transmission ropes, one end of each of which is fixedly arranged on the surface of the blade mounting seat. Through the arrangement of the visual mechanism, the problem that the blade mounting seat cannot reach the regulated position due to the sliding wire and is difficult to be found by the operator can be avoided, the slight deviation caused by the cutting stress can be weakened, and the aperture size stability is improved.

Description

Technical Field

[0001] This invention relates to the field of boring tool technology, specifically to a stepped internal hole boring tool that can be assembled in both directions. Background Technology

[0002] Boring tools are core cutting tools used in machining to bore and finish internal holes. They are widely used in boring machines, machining centers, and other equipment. In the field of machining stepped internal holes, stepped internal hole boring tools that can be assembled in both directions are now in use. These tools support bidirectional installation based on their structural characteristics and can flexibly switch the assembly direction according to the workpiece hole position and step surface position, thereby adapting to various machining conditions, reducing the frequency of tool changes, and possessing good versatility and ease of use in actual production.

[0003] In actual use of existing stepped internal hole boring tools that can be assembled in both directions, there are obvious defects in the tool fine-tuning process. When operators adjust the dimensions using the adjusting ring, the adjusting ring often spins idly while the tool body and cutting parts do not move synchronously. This problem causes the dimension adjustment to fail, making it impossible to accurately control the cutting stroke. This not only increases the debugging time but also easily leads to unqualified workpieces due to parameter deviations, seriously affecting machining accuracy and production stability. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a stepped internal hole boring tool that can be assembled in both directions. It has the advantage of combining dynamic and static methods to determine whether the tool rotates with the adjusting ring, thus solving the problem that the adjusting ring rotates while the tool remains stationary, but this is not easily observed by the user.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a boring bar body and a visual mechanism and a sound recognition mechanism disposed inside the boring bar body, wherein the visual mechanism includes: Two transparent glass pieces, each of which is fixedly embedded in the surface of the boring bar body; Two scale bands, each scale band is disposed in the inner cavity of the boring tool body, and the scale surface of each scale band faces the transparent glass; Two blade mounting seats, each of which is slidably disposed inside the boring bar body, the blade mounting seats having symmetrical blade mounting surfaces, allowing the blade to be mounted on the blade mounting seats in either a forward or reverse manner; Two drive ropes, one end of each of which is fixedly disposed on the surface of the blade mounting base; When the blade mounting base moves, it indirectly drives the scale belt to move via a transmission rope, and the displacement distance of the scale belt can be observed through the transparent glass.

[0006] The inner wall of the boring bar body is rotatably provided with two threaded shafts, and an adjusting ring is fixedly provided at one end of each threaded shaft. The inner wall of each cutting tool mounting seat is threaded onto the surface of the threaded shaft. Applying power to the adjusting ring can drive the threaded shaft to rotate, and the threaded shaft can push the blade mounting seat to move laterally.

[0007] The inner wall of the boring bar body is fixedly provided with two limiting cylinders, and each of the blade mounting seats is slidably disposed inside the limiting cylinder. The inner wall of the boring bar body is fixedly provided with two sets of baffles, and the surface of each baffle is in contact with the surface of the scale band.

[0008] Each of the scale bands has a rectangular frame fixedly mounted on its surface. The surface of each rectangular frame is fixedly mounted on the other end of the transmission rope. Each rectangular frame has a roller rotatably mounted on its inner wall. The inner wall of the boring tool body has two limiting grooves, and each roller is mounted inside the limiting groove. The drive rope pulls the rectangular frame to move, and the rectangular frame drives the scale belt to slide. When the rectangular frame moves, the rollers on its inner wall will slide inside the limit groove.

[0009] The inner wall of the boring tool body is provided with two sets of positioning shafts, each set having two positioning shafts, and the surface of each positioning shaft is in contact with the surface of the scale band. When the scale band moves, the positioning shaft will rotate under the action of friction.

[0010] The inner wall of the boring bar body is rotatably provided with two first spring return shafts, and the surface of each scale band is wound around the surface of the first spring return shaft. The inner wall of the boring bar body is fixedly provided with two long plates, and the surface of each first spring return shaft is rotatably provided on the inner wall of the long plate. When the scale strip unfolds, the first spring return shaft rotates, and when the scale strip stops being pulled, the first spring return shaft rolls the scale strip up.

[0011] The voice recognition mechanism includes: Two transmission gears; Several identical second spring return shafts, the surface of each second spring return shaft being rotatably disposed on the inner wall of the transmission gear; Several identical flipping blocks, the inner wall of each flipping block being fixedly disposed on the surface of the second spring return shaft; Several identical teeth, each of which is integrally formed on the surface of the threaded shaft, with some of the teeth disposed in the gaps between the flipping blocks; Under normal conditions, the rotation of the threaded shaft can drive the teeth to rotate, and at the same time, the rotation of the first spring return shaft drives the transmission gear to rotate. The threaded shaft and the transmission gear rotate at the same speed, and the teeth will not collide with the flipping block on the transmission gear. Under abnormal conditions, the first spring return shaft stops rotating, and the teeth will collide with the flipping block and make a sound.

[0012] A steering gear is fixedly mounted on the surfaces of the two first spring return shafts and the inner wall of the boring tool body, and the inner wall of the transmission gear is fixedly mounted on the surface of the steering gear.

[0013] Each of the long plates has an annular protrusion on its surface, which partially surrounds the first spring reset shaft. Each of the first spring reset shafts has two sets of cavities on its surface, with two cavities in each set.

[0014] Each cavity is equipped with a sliding structure inside, and each sliding structure has several identical elongated protrusions fixedly arranged on its surface.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a stepped internal hole boring tool that can be assembled in both directions, and has the following beneficial effects: 1. This reversible stepped internal boring tool mounts the insert to be installed on the insert mounting seat. The orientation of the insert can be determined according to machining requirements. A drive rope connected to the insert mounting seat allows for fine-tuning of the seat, pulling the drive rope and the graduated scale. This allows the operator to observe the scale sliding while fine-tuning the insert mounting seat. Conversely, if the insert mounting seat experiences stripping, the operator's hand will still be adjusting, but the graduated scale will have stopped moving. Therefore, the user... During adjustment, dynamic observation of the scale can effectively detect whether the insert mount has stripped threads. At the same time, the scale can continuously apply tension to the insert mount under the action of the reset structure, thus ensuring tight contact between the insert mount and the threaded shaft surface, reducing the slight deviation caused by cutting force, and improving the stability of the hole diameter. Therefore, with the help of the visual mechanism, the problem of the insert mount not reaching the adjustment position due to stripping threads, which is difficult for the operator to detect, can be avoided. It can also reduce the slight deviation caused by cutting force and improve the stability of the hole diameter. 2. Utilizing transmission gears and teeth, the transmission gears are indirectly connected to the first spring return shaft. The rotation of the threaded shaft can drive the teeth to rotate. If the blade mounting seat can move normally, it pulls the scale belt to move, and the scale belt drives the first spring return shaft to rotate. Therefore, the transmission gears will also rotate, and the rotation speed of the transmission gears and teeth is the same. Therefore, the teeth will rotate between the flipping blocks on the surface of the transmission gears. When the blade mounting seat slips, gets stuck, or cannot move normally, the transmission gears will stop rotating. At this time, the operator is still applying power to the adjusting ring, so the teeth will continue to rotate. Therefore, the teeth will collide with the flipping blocks. At this time, the flipping blocks will rotate under the action of the second spring return shaft. After the rotation ends, the flipping blocks will reset and collide with the next tooth, thus making a sound. This serves as an auditory reminder to the operator. At the same time, the circumferential teeth form multi-point support, improving the bending resistance of the threaded shaft. 3. The annular protrusion, covered with a layer of rubber, partially surrounds the first spring return shaft without contacting it. When the boring bar is in use, centrifugal force causes the sliding structure to swing outward. The surface of the sliding structure has a long, raised structure. Under centrifugal force, the long, raised structure comes into close contact with the annular protrusion, embedding itself into the rubber layer on the annular protrusion surface. This friction increases the stability of the first spring return shaft, preventing accidental movement due to centrifugal force when the boring bar rotates at high speed. Additionally, the two cavities on the surface of the first spring return shaft disperse the alternating stress at the cavity opening edges, extending the shaft's service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the scale band of the present invention from the left view.

[0018] Figure 3 This is a cross-sectional structural diagram of the boring tool body of the present invention.

[0019] Figure 4 This is a schematic diagram of the threaded shaft of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the first spring reset shaft of the present invention, viewed from the right.

[0021] Figure 6 This is a right-side structural schematic diagram of the positioning axis of the present invention.

[0022] Figure 7 For the present invention Figure 6 A magnified view of a portion of point A in the middle.

[0023] Figure 8 This is a cross-sectional view of the first spring reset shaft of the present invention.

[0024] Figure 9 This is a schematic diagram of the structure of the long plate of the present invention.

[0025] In the diagram: 1. Boring tool body; 201. Scale band; 202. Transparent glass; 203. Rectangular frame; 204. Roller; 205. Limiting groove; 206. Transmission rope; 207. Adjusting ring; 208. First spring return shaft; 209. Limiting cylinder; 210. Tool mounting seat; 211. Threaded shaft; 212. Positioning shaft; 213. Baffle; 214. Long plate; 301. Steering gear; 302. Transmission gear; 303. Gear teeth; 304. Flipping block; 305. Second spring return shaft. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 invention 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, they should not be construed as limitations on this invention.

[0028] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Example 1: A stepped internal hole boring tool that can be assembled in both directions is provided, and has the following technical features.

[0031] Please see Figures 1-9 A stepped internal hole boring tool that can be assembled in both directions includes a boring tool body 1 and a visual mechanism and a sound recognition mechanism disposed inside the boring tool body 1. The visual mechanism includes: Two transparent glass pieces 202 are fixedly embedded in the surface of the boring bar body 1; Two scale bands 201 are provided in the inner cavity of the boring tool body 1, and the scale surface of each scale band 201 faces the transparent glass 202. Two blade mounting seats 210 are slidably disposed inside the boring bar body 1. Each blade mounting seat 210 has a symmetrical blade mounting surface, so that the blade can be mounted on the blade mounting seat 210 in a forward or reverse manner. Two drive ropes 206, one end of each drive rope 206 is fixedly mounted on the surface of the blade mounting seat 210; When the blade mounting base 210 moves, it indirectly drives the scale belt 201 to move through the transmission rope 206, and the displacement distance of the scale belt 201 can be observed through the transparent glass 202.

[0032] It should be noted that when fine-tuning the insert mount 210, the scale 201 can be observed sliding in the peripheral vision. When the insert mount 210 experiences thread stripping, although the operator's hand is still adjusting, the scale 201 has stopped moving. Therefore, when adjusting, the user can effectively detect whether the insert mount 210 has experienced thread stripping by observing the dynamic movement of the scale 201. At the same time, the scale 201 can continuously apply tension to the insert mount 210 under the action of the reset structure, thus ensuring that the insert mount 210 and the threaded shaft 211 are in close contact, reducing the slight deviation caused by cutting force and improving the stability of the hole diameter. Therefore, with the help of the visual mechanism, the problem of the insert mount 210 not reaching the adjustment position due to thread stripping, which is difficult for the operator to detect, can be avoided. It can also reduce the slight deviation caused by cutting force and improve the stability of the hole diameter.

[0033] Furthermore, the inner wall of the boring bar body 1 is rotatably provided with two threaded shafts 211, and an adjusting ring 207 is fixedly provided at one end of each threaded shaft 211. The inner wall of each insert mounting seat 210 is threaded onto the surface of the threaded shaft 211. Applying power to the adjusting ring 207 can drive the threaded shaft 211 to rotate, and the threaded shaft 211 can push the blade mounting seat 210 to move laterally.

[0034] It should be noted that when the boring bar body 1 is used, the insert to be installed is mounted on the insert mounting seat 210. The orientation of the insert to be installed can be determined according to the machining requirements. The installation steps for the inserts in both directions are the same. After the insert is installed, the insert mounting seat 210 needs to be finely adjusted. Therefore, the adjusting ring 207 needs to be rotated. The adjusting ring 207 can transmit power to the threaded shaft 211. With the threaded connection between the threaded shaft 211 and the insert mounting seat 210, the extension length of the insert mounting seat 210 can be adjusted.

[0035] Furthermore, two limiting cylinders 209 are fixedly installed on the inner wall of the boring bar body 1, and each cutting tool mounting seat 210 is slidably installed inside the limiting cylinder 209. Two sets of baffles 213 are fixedly installed on the inner wall of the boring bar body 1, and the surface of each baffle 213 is in contact with the surface of the scale band 201.

[0036] It should be noted that the blade mounting seat 210 slides inside the limiting cylinder 209, which can limit the position of the blade mounting seat 210, so that the blade mounting seat 210 can only move laterally and not rotate.

[0037] Furthermore, each scale band 201 has a rectangular frame 203 fixedly mounted on its surface, and the surface of each rectangular frame 203 is fixedly mounted on the other end of the transmission rope 206. Each rectangular frame 203 has a roller 204 rotatably mounted on its inner wall. The inner wall of the boring tool body 1 has two limiting grooves 205, and each roller 204 is mounted inside the limiting groove 205. The transmission rope 206 pulls the rectangular frame 203 to move, and the rectangular frame 203 drives the scale belt 201 to slide. When the rectangular frame 203 moves, the roller 204, which is rotatably set on its inner wall, will slide inside the limiting groove 205.

[0038] It should be noted that the roller 204 slides inside the limiting groove 205, which ensures that the rectangular frame 203 only moves laterally and does not rotate.

[0039] Furthermore, the inner wall of the boring bar body 1 is rotatably provided with two sets of positioning shafts 212, each set of positioning shafts 212 having two shafts, and the surface of each positioning shaft 212 is in contact with the surface of the scale band 201. When the scale band 201 moves, the positioning shaft 212 will rotate under the action of friction.

[0040] It should be noted that the positioning axis 212 can be used to limit the turning position of the scale 201.

[0041] Furthermore, the inner wall of the boring bar body 1 is rotatably provided with two first spring return shafts 208, and the surface of each scale strip 201 is wrapped around the surface of the first spring return shaft 208. The inner wall of the boring bar body 1 is fixedly provided with two long plates 214, and the surface of each first spring return shaft 208 is rotatably provided on the inner wall of the long plate 214. When the scale band 201 unfolds, the first spring return shaft 208 will rotate, and when the scale band 201 stops being pulled, the first spring return shaft 208 will roll up the scale band 201.

[0042] It should be noted that the spring reset structure inside the first spring reset shaft 208 can automatically wrap around the surface of the first spring reset shaft 208 when the scale band 201 is not under tension, and the scale band 201 is wrapped around the surface of the first spring reset shaft 208 in a single turn.

[0043] Further, the voice recognition mechanism includes: Two transmission gears 302; Several identical second spring return shafts 305, the surface of each second spring return shaft 305 being rotatably disposed on the inner wall of the transmission gear 302; Several identical flipping blocks 304, the inner wall of each flipping block 304 is fixedly disposed on the surface of the second spring return shaft 305; Several identical teeth 303, each tooth 303 is integrally formed on the surface of the threaded shaft 211, and some teeth 303 are disposed in the gaps between the flipping blocks 304; Under normal conditions, the rotation of the threaded shaft 211 can drive the tooth 303 to rotate, and at the same time, the first spring return shaft 208 rotates, which eventually drives the transmission gear 302 to rotate. The threaded shaft 211 and the transmission gear 302 rotate at the same speed, and the tooth 303 will not collide with the flipping block 304 on the transmission gear 302. Under abnormal conditions, the first spring return shaft 208 stops rotating, and the tooth 303 will collide with the flipping block 304 and make a sound.

[0044] It should be noted that, utilizing the transmission gear 302 and tooth 303, the transmission gear 302 is indirectly connected to the first spring return shaft 208. The rotation of the threaded shaft 211 can drive the tooth 303 to rotate. If the blade mounting seat 210 can move normally, it pulls the scale band 201, which in turn drives the first spring return shaft 208 to rotate. Therefore, the transmission gear 302 will also rotate, and the rotation speeds of the transmission gear 302 and the tooth 303 are the same. Thus, the tooth 303 will rotate to the position between the flipping blocks 304 on the surface of the transmission gear 302. When the blade mounting seat... When the thread 210 slips, jams, or cannot move normally, the transmission gear 302 will stop rotating. At this time, the operator is still applying power to the adjusting ring 207, so the tooth 303 will continue to rotate. Therefore, the tooth 303 will collide with the flipping block 304. At this time, the flipping block 304 will rotate under the action of the second spring return shaft 305. After the rotation ends, the flipping block 304 will reset and collide with the next tooth 303, thus making a sound, which serves as an auditory reminder to the operator. At the same time, the teeth 303 are distributed circumferentially to form multiple points of support, improving the bending resistance of the threaded shaft 211.

[0045] Furthermore, the surfaces of the two first spring return shafts 208 and the inner wall of the boring bar body 1 are jointly fixedly provided with a steering gear 301, and the inner wall of the transmission gear 302 is fixedly provided on the surface of the steering gear 301.

[0046] It should be noted that the presence of the steering gear 301 enables the power on the first spring return shaft 208 to be transmitted to the transmission gear 302.

[0047] Furthermore, each long plate 214 has an annular protrusion on its surface, which partially surrounds the first spring reset shaft 208. Each first spring reset shaft 208 has two sets of cavities on its surface, with two cavities in each set.

[0048] It should be noted that the annular protrusion is covered with a layer of rubber, and the annular protrusion partially surrounds the first spring return shaft 208, but does not contact the first spring return shaft 208.

[0049] Furthermore, each cavity is equipped with a sliding structure inside, and each sliding structure has several identical elongated protrusions fixedly installed on its surface.

[0050] It should be noted that when the boring bar body 1 is in use, the centrifugal force causes the sliding structure to be thrown outward. The sliding structure is cylindrical and is set in the cavity of the first spring return shaft 208. It can slide freely inside the cavity. The surface of the sliding structure is provided with a long strip protrusion. Therefore, under the action of centrifugal force, the long strip protrusion at one end of the sliding structure will be in close contact with the surface of the annular protrusion. Since the surface of the annular protrusion is provided with a rubber layer, the long strip protrusion will be embedded in the rubber layer of the annular protrusion surface, directly increasing the contact area between the sliding structure and the rubber layer. Thus, under the action of the sliding structure and the rubber layer, the stability of the first spring return shaft 208 can be increased, avoiding the problem of the first spring return shaft 208 moving unexpectedly due to centrifugal force when the boring bar body 1 rotates at high speed. In addition, the two sets of cavities opened on the surface of the first spring return shaft 208 can disperse the alternating stress at the edge of the cavity opening and extend the service life of the shaft.

[0051] Working principle: When the boring bar body 1 is needed, the insert to be installed is mounted on the insert mounting seat 210. The orientation of the insert to be installed can be determined according to the machining requirements. The installation steps for inserts installed in both directions are the same. After the insert is installed, the insert mounting seat 210 needs to be finely adjusted. Therefore, rotational power needs to be applied to the adjusting ring 207. The adjusting ring 207 can transmit power to the threaded shaft 211, which engages with the threaded connection between the threaded shaft 211 and the insert mounting seat 210. The connection allows for adjustment of the extension length of the blade mounting base 210. A transmission rope 206 is provided, connected to the blade mounting base 210. When fine-tuning the blade mounting base 210, it pulls the transmission rope 206, the rectangular frame 203, and the graduated band 201 to move. The rectangular frame 203 prevents the transmission rope 206 from deforming the graduated band 201. Furthermore, the rectangular frame 203 is limited by the roller 204 and the limiting groove 205. In this position, the rectangular frame 203 and the scale band 201 can only move laterally. Thus, when the operator is fine-tuning the blade mount 210, he can observe the scale band 201 sliding in his peripheral vision. When the blade mount 210 has a stripping problem, although the operator's hand is still adjusting, the scale band 201 has stopped moving. Therefore, when adjusting, the user can effectively detect whether the blade mount 210 has a stripping problem by observing the dynamic of the scale band 201. At the same time, the scale band 201 can continuously apply tension to the blade mount 210 under the action of the reset structure. Therefore, it can ensure that the blade mount 210 and the threaded shaft 211 are in close contact, reducing the slight deviation caused by the cutting force and improving the stability of the hole diameter. Therefore, with the action of the visual mechanism, it can avoid the problem that the blade mount 210 has not reached the adjustment position due to stripping, which is difficult for the operator to detect. It can also reduce the slight deviation caused by the cutting force and improve the stability of the hole diameter. The transmission gear 302 is indirectly connected to the first spring return shaft 208 via the transmission gear 302 and the tooth 303. Rotation of the threaded shaft 211 drives the tooth 303 to rotate. If the blade mounting seat 210 can move normally, it pulls the scale band 201, which in turn drives the first spring return shaft 208 to rotate. Therefore, the transmission gear 302 will also rotate, and the rotation speeds of the transmission gear 302 and the tooth 303 are the same. Thus, the tooth 303 will rotate to the position between the flipping blocks 304 on the surface of the transmission gear 302. However, when the blade mounting seat 210 slips, jams, or cannot move normally, the threaded shaft 211 is still rotating, but the blade mounting seat 210 cannot pull the scale band 203. 1. If the movement is not possible, the first spring return shaft 208 will not be able to rotate. Therefore, the tooth 303, which rotates coaxially with the threaded shaft 211, will continue to rotate, while the transmission gear 302 connected to the first spring return shaft 208 will stop rotating. At this time, the operator is still applying power to the adjusting ring 207, so the tooth 303 will continue to rotate. Therefore, the tooth 303 will collide with the flipping block 304. At this time, the flipping block 304 will rotate under the action of the second spring return shaft 305. After the rotation ends, the flipping block 304 will reset and collide with the next tooth 303, thus making a sound. This serves as an auditory reminder to the operator. At the same time, the tooth 303 is circumferentially distributed to form multiple points of support, improving the bending resistance of the threaded shaft 211. The annular protrusion, covered with a layer of rubber, partially surrounds the first spring return shaft 208 without contacting it. When the boring bar body 1 is in use, centrifugal force causes the sliding structure to be thrown outward. The surface of the sliding structure has a long, raised structure. Under centrifugal force, the long, raised structure will come into close contact with the annular protrusion, thus embedding into the rubber layer on the surface of the annular protrusion. This increases the stability of the first spring return shaft 208 under friction, preventing it from moving unexpectedly due to centrifugal force when the boring bar body 1 rotates at high speed. In addition, the two sets of cavities on the surface of the first spring return shaft 208 can disperse the alternating stress at the edge of the cavity openings, extending the service life of the shaft.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stepped internal hole boring tool that can be assembled in both directions, comprising a boring tool body (1) and a visual mechanism and a sound recognition mechanism disposed inside the boring tool body (1), characterized in that, The visual mechanism includes: Two transparent glass panes (202) are fixedly embedded in the surface of the boring bar body (1); Two scale bands (201) are provided in the inner cavity of the boring bar body (1), and the scale surface of each scale band (201) faces the transparent glass (202). Two blade mounting seats (210) are slidably disposed inside the boring bar body (1). The blade mounting seats (210) have symmetrical blade mounting surfaces, so that the blade can be mounted on the blade mounting seats (210) in a forward or reverse manner. Two drive ropes (206), one end of each drive rope (206) is fixedly disposed on the surface of the blade mounting seat (210); When the blade mounting base (210) moves, it indirectly drives the scale belt (201) to move through the transmission rope (206), and the displacement distance of the scale belt (201) can be observed through the transparent glass (202).

2. The stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, The inner wall of the boring bar body (1) is rotatably provided with two threaded shafts (211), and an adjusting ring (207) is fixedly provided at one end of each threaded shaft (211). The inner wall of each blade mounting seat (210) is threaded onto the surface of the threaded shaft (211). Applying power to the adjusting ring (207) can drive the threaded shaft (211) to rotate, and the threaded shaft (211) can push the blade mounting seat (210) to move laterally.

3. A stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, The inner wall of the boring bar body (1) is fixedly provided with two limiting cylinders (209), and each of the blade mounting seats (210) is slidably disposed inside the limiting cylinder (209). The inner wall of the boring bar body (1) is fixedly provided with two sets of baffles (213), and the surface of each baffle (213) is in contact with the surface of the scale band (201).

4. A stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, Each of the scale bands (201) has a rectangular frame (203) fixedly installed on its surface. The surface of each rectangular frame (203) is fixedly installed at the other end of the transmission rope (206). Each rectangular frame (203) has a roller (204) rotatably installed on its inner wall. The boring bar body (1) has two limiting grooves (205) on its inner wall. Each roller (204) is installed inside the limiting groove (205). The transmission rope (206) pulls the rectangular frame (203) to move, and the rectangular frame (203) drives the scale belt (201) to slide. When the rectangular frame (203) moves, the roller (204) installed on its inner wall will slide inside the limiting groove (205).

5. A stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, The inner wall of the boring bar body (1) is provided with two sets of positioning shafts (212), each set of positioning shafts (212) has two shafts, and the surface of each positioning shaft (212) is in contact with the surface of the scale band (201). When the scale band (201) moves, the positioning shaft (212) will rotate under the action of friction.

6. A stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, The inner wall of the boring bar body (1) is rotatably provided with two first spring return shafts (208), and the surface of each scale strip (201) is wrapped around the surface of the first spring return shaft (208). The inner wall of the boring bar body (1) is fixedly provided with two long plates (214), and the surface of each first spring return shaft (208) is rotatably provided on the inner wall of the long plate (214). When the scale band (201) unfolds, the first spring return shaft (208) will rotate, and when the scale band (201) stops being pulled, the first spring return shaft (208) will roll up the scale band (201).

7. A stepped internal hole boring tool that can be assembled in both directions according to claim 1, characterized in that, The voice recognition mechanism includes: Two transmission gears (302); Several identical second spring return shafts (305), the surface of each second spring return shaft (305) is rotatably disposed on the inner wall of the transmission gear (302); Several identical flipping blocks (304), the inner wall of each flipping block (304) is fixedly disposed on the surface of the second spring return shaft (305); Several identical teeth (303) are integrally formed on the surface of the threaded shaft (211), and some of the teeth (303) are disposed in the gaps between the flipping blocks (304); Under normal conditions, the rotation of the threaded shaft (211) can drive the teeth (303) to rotate, and at the same time the first spring return shaft (208) rotates, which eventually drives the transmission gear (302) to rotate. The threaded shaft (211) and the transmission gear (302) rotate at the same speed, and the teeth (303) will not collide with the flipping block (304) on the transmission gear (302). Under abnormal conditions, the first spring return shaft (208) stops rotating, and the teeth (303) will collide with the flipping block (304) and make a sound.

8. A stepped internal hole boring tool that can be assembled in both directions according to claim 7, characterized in that, The surfaces of the two first spring return shafts (208) and the inner wall of the boring bar body (1) are jointly fixedly provided with a steering gear (301), and the inner wall of the transmission gear (302) is fixedly provided on the surface of the steering gear (301).

9. A stepped internal hole boring tool that can be assembled in both directions according to claim 6, characterized in that, Each of the long plates (214) has an annular protrusion on its surface, which partially surrounds the first spring reset shaft (208). Each of the first spring reset shafts (208) has two sets of cavities on its surface, and each set of cavities has two cavities.

10. A stepped internal hole boring tool that can be assembled in both directions according to claim 9, characterized in that, Each cavity is equipped with a sliding structure inside, and each sliding structure has several identical elongated protrusions fixedly arranged on its surface.

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