Deep hole boring tool eccentricity self-adaptive adjusting device and method

Abstract

The present application belongs to the technical field of boring, in particular to a deep hole boring tool eccentricity self-adaptive adjusting device, which comprises a mounting plate and further comprises: a first adjusting structure mounted on the mounting plate, the first adjusting structure comprising: two moving plates for driving the blade seat to move, the moving plates being in sliding connection with the mounting plate; a threaded rod one for driving the two moving plates to slide together, the threaded rod one being in rotary connection with the mounting plate; a connecting structure for connecting the blade seat, the connecting structure comprising a cylinder, the cylinder being mounted on the moving plate; a second adjusting structure mounted on one of the moving plates, the cylinder on the moving plate being in sliding connection with the moving plate, the second adjusting structure comprising a threaded rod two for driving the cylinder to move, the threaded rod two being in rotary connection with the moving plate; through the setting of the first adjusting structure and the second adjusting structure, hierarchical control is adopted, the absolute synchronization of the eccentricity of the double blades is ensured in the symmetrical boring mode, and the asymmetry problem caused by the mechanical error of the traditional double screw rods is eliminated.

Description

Technical Field

[0001] This invention belongs to the field of boring, specifically to a device and method for adaptive adjustment of the eccentricity of deep hole boring tools. Background Technology

[0002] Deep hole boring refers to the machining process of internal holes with a length-to-diameter ratio greater than 5. In this process, the tool eccentricity is a key parameter, which refers to the radial offset distance of the boring bar relative to the rotation center of the tool. By adjusting the tool eccentricity through the adjustment device, the machining requirements of internal holes of different specifications can be met.

[0003] A patent application with publication number CN120205854A discloses a multifunctional indexable roughing boring head, including a main body and a cutting tool holder. The main body includes a base body, which includes base body H and base body S. The cutting tool holder includes cutting tool holder H and cutting tool holder S. It also includes: a cutting tool mounted on the cutting tool holder; an adjusting block mounted on the cutting tool holder; two adjusting grooves formed on the main body; an adjusting bolt rotatably mounted in the adjusting groove, the adjusting bolt being threadedly connected to the adjusting block; by rotating the adjusting bolt, the adjusting block is moved radially, and the movement of the adjusting block drives the cutting tool holder and the cutting tool on it to move synchronously, thereby realizing the adjustment of the eccentricity.

[0004] The above-mentioned solution adopts a differentiated height design for the base and the insert holder, and realizes two machining modes through a specific combination: when the base H is matched with the insert holder H, or the base S is matched with the insert holder S, the stepped boring is realized by using the preset height difference; when the base H is matched with the insert holder S, the height difference is eliminated to realize symmetrical boring. Both modes are adjusted radially by independent adjusting bolts. In the symmetrical mode, the double adjusting bolts are affected by factors such as the drive system error and the mechanical transmission error of the adjusting bolts, and there may be a symmetrical deviation between the two inserts.

[0005] Therefore, the present invention provides an adaptive adjustment device and method for the eccentricity of deep hole boring tools. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: The deep hole boring tool eccentricity adaptive adjustment device of this invention includes a mounting plate installed on the tool holder of a dual-mode boring tool, and further includes: a first adjustment structure installed on the mounting plate, the first adjustment structure including: two moving plates for driving the tool holder to move, the moving plates being slidably connected to the mounting plate; a threaded rod one for driving the two moving plates to slide together, the threaded rod one being rotatably connected to the mounting plate; a connecting structure for connecting the tool holder, the connecting structure including a cylinder, the cylinder being installed on the moving plate; a second adjustment structure installed on one of the moving plates, the cylinder on the moving plate being slidably connected to the moving plate, the second adjustment structure including a threaded rod two for driving the cylinder to move, the threaded rod two being rotatably connected to the moving plate; and a measuring structure for detecting the eccentricity of the two tool holders.

[0008] Preferably, the measuring structure includes: two laser sensors mounted on the cylinder; two reflectors mounted on the mounting plate; a first shielding plate slidably mounted on the mounting plate; a second shielding plate slidably mounted on the cylinder; and a connecting rod that drives the first shielding plate and the second shielding plate to move, wherein the connecting rod is slidably connected to the mounting plate and the second shielding plate is slidably connected to the connecting rod.

[0009] Preferably, the measuring structure further includes: a channel formed in the tool holder and the mounting plate, wherein a plurality of balls are rolled in the channel; and two sealing plates slidably mounted on the channel, wherein one sealing plate is located within the movement range of the tool holder fastening bolt, and the other sealing plate is connected to the connecting rod.

[0010] Preferably, the connection structure further includes a plug-in assembly mounted on the two blade holders, the plug-in assembly including a round rod mounted on the blade holder.

[0011] Preferably, the two plug-in components of the first type have different lengths, and the second adjustment structure further includes a groove formed on the movable plate and a plug-in component of the second type that is slidably mounted on the cylinder.

[0012] Preferably, the first insertion assembly further includes: a plurality of abutment plates for abutting against the inner wall of the cylinder; a mounting base fixedly installed on the blade holder, wherein the round rod is slidably connected to the blade holder vertically, and the mounting base is slidably connected to the round rod; a first connecting rod for connecting the abutment plates and the round rod, one end of the first connecting rod being rotatably connected to the abutment plates, and the other end of the first connecting rod being rotatably and slidably connected to the round rod vertically; a second connecting rod for connecting the abutment plates and the mounting base, wherein both ends of the second connecting rod are rotatably connected to the abutment plates and the mounting base respectively; and a spring installed between the mounting base and the round rod.

[0013] Preferably, the structure of the second plug-in component is the same as that of the first plug-in component. The second plug-in component is slidably connected to the cylinder via the round rod, and a second spring is installed between the round rod and the cylinder of the second plug-in component.

[0014] Preferably, the device further includes two motors for driving the first threaded rod and the second threaded rod to move, and a gearbox for changing the rotational speed is installed between the motors and the first threaded rod or the second threaded rod.

[0015] An adaptive adjustment method for the eccentricity of deep hole boring tools includes the following steps: S1. Select either symmetrical boring mode or stepped boring mode according to machining requirements, and install two insert holders to their corresponding tool holder mounting positions; S2. The control system starts the motor of the first adjustment structure, which drives two moving plates to move synchronously along the mounting plate via threaded rod one. The moving plates push the insert holders and the boring inserts on them to move radially through the connecting structure, thus achieving preliminary adjustment of the eccentricity; S3. When in symmetrical boring mode, the threaded rod two of the second adjustment structure is kept in a zero-position locked state; when in stepped boring mode, the motor of the second adjustment structure is started, which drives the connecting structure on the corresponding moving plate to make additional displacement through threaded rod two, so that the eccentricity of the two insert holders generates a preset difference, forming the radial offset required for stepped machining; S4. The displacement of the moving plates is detected in real time by a laser sensor and converted into the insert eccentricity. The measurement data is fed back to the control system, which dynamically adjusts the motor output of the first and second adjustment structures based on the error value.

[0016] Preferably, when the absolute error between the actual eccentricity and the target eccentricity is greater than or equal to 1mm, the transmission is controlled to switch to a low transmission ratio mode, and the drive motor runs the moving plate at a high speed. When the absolute error is less than 1mm, the transmission is controlled to switch to a high transmission ratio mode, and the drive motor runs the moving plate at a low speed to complete the final positioning.

[0017] The beneficial effects are as follows: 1. The deep hole boring tool eccentricity adaptive adjustment device and method of the present invention, through the hierarchical control of the first adjustment structure and the second adjustment structure, ensures absolute synchronization of the eccentricity of the two cutting tools in the symmetrical boring mode, and eliminates the asymmetry problem caused by mechanical errors in traditional twin screws.

[0018] 2. The adaptive adjustment device and method for the eccentricity of deep hole boring tools described in this invention monitors the displacement of the moving plate in real time through a laser sensor and a reflector, and feeds the data back to the control system to achieve high-precision closed-loop adjustment. In conjunction with the sealing plate-ball linkage mechanism triggered by the fastening bolt, the shielding plate is automatically driven to open and close the measurement window. With the help of a wiping cloth to clean the reflector surface and sensor in both directions, the cutting fluid and metal chips are completely isolated to ensure measurement stability.

[0019] 3. The deep hole boring tool eccentricity adaptive adjustment device and method of the present invention, through the interference design of the second plug-in component and the groove, forces the second adjustment structure to be zero before the tool holder installation can be completed, thereby avoiding the reference deviation caused by human operation error from the root. With the cooperation of the abutment plate, it only contacts the cylinder and the groove in the final locking stage. Compared with the traditional sliding friction assembly method, it effectively reduces mechanical wear and can maintain the initial positioning accuracy even after long-term use. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting plate of the present invention; Figure 3 This is a schematic diagram of the connecting rod of the present invention; Figure 4 This is a cross-sectional view of the blade holder, blade support, and mounting plate of the present invention; Figure 5 This is a schematic diagram of the first adjusting structure of the present invention; Figure 6 This is a schematic diagram showing the position of the plug-in component of the present invention; Figure 7 This is a cross-sectional view of the movable plate and cylinder of the present invention; Figure 8 This is a cross-sectional view of the round rod and mounting base of the present invention; Figure 9 This is an exploded view of the mounting base of the present invention; In the diagram: 1. Mounting plate; 2. First adjustment structure; 21. Moving plate; 22. Threaded rod one; 3. Connecting structure; 31. Cylinder; 32. Insertion assembly one; 321. Round rod; 322. Support plate; 323. Mounting base; 324. Connecting rod one; 325. Connecting rod two; 326. Spring one; 4. Second adjustment structure; 41. Threaded rod two; 42. Groove; 43. Insertion assembly two; 44. Spring two; 5. Measuring structure; 51. Laser sensor; 52. Reflector; 53. Shielding plate one; 54. Shielding plate two; 55. Connecting rod; 56. Channel; 57. Sealing plate; 58. Spring three; 59. Ball bearing; 6. Motor; 7. Gearbox; 100. Tool holder; 200. Tool holder; 300. Blade holder; 400. Mounting hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-9 As shown, the deep hole boring tool eccentricity adaptive adjustment device of this embodiment includes a mounting plate 1 mounted on the tool holder 100 of a dual-mode boring tool, and further includes: a first adjustment structure 2 mounted on the mounting plate 1, the first adjustment structure 2 including: two moving plates 21 for driving the insert holder 300 to move, the moving plates 21 being slidably connected to the mounting plate 1; a threaded rod 22 for driving the two moving plates 21 to slide together, the threaded rod 22 being rotatably connected to the mounting plate 1; a connecting structure 3 for connecting the insert holder 300, the connecting structure 3 including a cylinder 31, the cylinder 31 being mounted on the moving plate 21; a second adjustment structure 4 mounted on one of the moving plates 21, the cylinder 31 on the moving plate 21 being slidably connected to the moving plate 21, the second adjustment structure 4 including a threaded rod 41 for driving the cylinder 31 to move, the threaded rod 41 being rotatably connected to the moving plate 21; and a measuring structure 5 for detecting the eccentricity of the two insert holders 300.

[0024] Specifically, the existing dual-mode dual boring tool uses two seats and insert holders 300 with differentiated height designs to achieve two machining modes: when seat H is engaged with insert holder 300H and seat S with insert holder 300S, stepped boring is achieved by utilizing the preset height difference; when seat H is engaged with insert holder 300S, the height difference is eliminated to achieve symmetrical boring. Both modes are adjusted radially by independent screws. In the symmetrical mode, the dual screws are affected by factors such as drive system errors and screw mechanical transmission errors, and there may be a symmetrical deviation between the two inserts. Select either symmetrical boring mode or stepped boring mode according to the machining requirements. Install the two insert holders 300 into their corresponding insert holder 200 mounting positions. The insert holders 300 are connected to the moving plate 21 via the connecting structure 3. When the working mode is symmetrical boring, the control system controls the thread rod 22 to rotate. The rotation of the thread rod 22 drives the two moving plates 21 to move synchronously along the mounting plate 1. The moving plates 21 push the insert holders 300 and the boring inserts on them to move radially through the connecting structure 3, thereby adjusting the eccentricity. When the step boring mode is used, the thread rod 22 completes the reference positioning. Then, the control system controls the rotation of the threaded rod 41, which drives the connecting structure 3 on the corresponding moving plate 21 to make additional displacement, so that the eccentricity of the two blade holders 300 produces a preset difference, forming the radial offset required for stepped machining. During the adjustment process of the first adjustment structure 2 and the second adjustment structure 4, the measuring structure 5 detects the displacement of the moving plate 21 in real time and converts it into the blade eccentricity. The measurement data is fed back to the control system, and the control system dynamically corrects the adjustment amount through a closed-loop algorithm until the eccentricity reaches the target value, thus completing the adaptive adjustment of the eccentricity. By setting the first adjustment structure 2 and the second adjustment structure 4, and adopting graded control, the problem of mechanical asynchrony of the twin screws is eliminated, ensuring the consistency of the eccentricity of the two blades in the symmetrical mode, and ensuring the boring effect.

[0025] like Figures 1-3 As shown, the measuring structure 5 includes: two laser sensors 51 mounted on the cylinder 31; two reflectors 52 mounted on the mounting plate 1; a first shield 53 slidably mounted on the mounting plate 1; a second shield 54 slidably mounted on the cylinder 31; and a connecting rod 55 that drives the first shield 53 and the second shield 54 to move. The connecting rod 55 is slidably connected to the mounting plate 1, and the second shield 54 is slidably connected to the connecting rod 55.

[0026] like Figures 1-4 As shown, the measuring structure 5 also includes: a channel 56 opened on the tool holder 200 and the mounting plate 1, in which a number of balls 59 are rolled; two sealing plates 57 slidably mounted on the channel 56, one of which is located within the movement range of the fastening bolt of the tool holder 300, and the other sealing plate 57 is connected to the connecting rod 55.

[0027] Specifically, the fastening bolt is installed in the mounting hole 400. A spring 58 for resetting is installed between the sealing plate 57 on the connecting rod 55 and the tool holder 200. The cooperation of the reflector 52 and the laser sensor 51 allows for real-time detection of the moving distance of the moving plate 21. Before adjusting the eccentricity, the fastening bolt needs to be loosened. After the eccentricity adjustment is completed, the fastening bolt needs to be tightened. When the fastening bolt is tightened, it pushes one sealing plate 57 to move downwards. This downward movement pushes another sealing plate 57 horizontally through the ball bearing 59 in the channel 56. The other sealing plate 57 pushes the second shielding plate 54 and the first shielding plate 53 through the connecting rod 55, blocking the reflector 52 and the laser sensor 51. At this time, the spring 58 is in a stretched state. When the fastening bolt is loosened... At this time, the sealing plate 57 moves horizontally in the opposite direction under the elastic force of the spring 3 58, and drives the first shielding plate 53 and the second shielding plate 54 through the connecting rod 55 to expose the reflector 52 and the laser sensor 51. The ball bearing 59 in the channel 56 drives the other sealing plate 57 to move upward. A wiping cloth is set on the side of the first shielding plate 53 and the second shielding plate 54 facing the reflector 52 and the laser. The surface of the reflector 52 and the laser can be cleaned while the first shielding plate 53 and the second shielding plate 54 are moving. The setting of the first shielding plate 53 and the second shielding plate 54 realizes the automatic opening and closing of the measurement window, completely isolating the cutting fluid and metal chips during non-measurement periods. With the wiping cloth, bidirectional reciprocating cleaning is completed during each shielding action, ensuring the accuracy of the measurement of the eccentricity of the reflector 52 and the laser sensor 51.

[0028] like Figures 6-9As shown, the connection structure 3 also includes a plug-in assembly 32 mounted on the two blade holders 300, and the plug-in assembly 32 includes a round rod 321 mounted on the blade holder 300.

[0029] Specifically, the existing technology achieves the movement of the insert holder 300 through the cooperation of the adjusting block and the threaded rod. The adjusting block is directly fixed on the insert holder 300. When changing between the two boring modes, the threaded rod needs to be removed from the tool first, and then the adjusting block and the insert holder 300 need to be removed, which is relatively troublesome. By plugging in the connector 32 and the cylinder 31, the insert holder 300 and the moving plate 21 can be quickly installed and removed, which is more convenient to use.

[0030] like Figure 6 and Figure 7 As shown, the two plug-in components 32 have different lengths. The second adjustment structure 4 also includes a groove 42 formed on the movable plate 21 and a second plug-in component 43 that is slidably mounted on the cylinder 31.

[0031] Specifically, when the working mode is symmetrical boring, the longer insert holder 300 of the first insertion component 32 is inserted into the cylinder 31 containing the second adjustment structure 4. During the insertion process, the first insertion component 32 can push the second insertion structure 42 into the groove 42. If the second adjustment structure 4 is not zeroed, the second insertion component 43 cannot be inserted into the groove 42, and the first insertion structure and the insert holder 300 cannot be installed on the tool holder 200. If the second adjustment structure 4 is zeroed, the first insertion component 32 pushes the second adjustment structure 4 into the groove 42, limiting the cylinder 31 and the moving plate 21, and realizing the zeroing and locking of the second adjustment structure 4. Through the setting of the groove 42 and the second insertion component 43, physical interference ensures that the second adjustment structure 4 must be zeroed to complete the assembly, completely eliminating human operation errors. After the second insertion component 43 is embedded in the groove 42, a mechanical constraint is formed, avoiding the problem of displacement of the second adjustment structure 4 during the adjustment process.

[0032] like Figures 7-9 As shown, the plug-in assembly 32 further includes: several abutment plates 322 for abutting against the inner wall of the cylinder 31; a mounting base 323 fixedly installed on the blade holder 300, with the round rod 321 slidably connected to the blade holder 300 and the mounting base 323 slidably connected to the round rod 321; a first connecting rod 324 for connecting the abutment plates 322 and the round rod 321, with one end of the first connecting rod 324 rotatably connected to the abutment plates 322 and the other end of the first connecting rod 324 rotatably and slidably connected to the round rod 321; a second connecting rod 325 for connecting the abutment plates 322 and the mounting base 323, with both ends of the second connecting rod 325 rotatably connected to the abutment plates 322 and the mounting base 323 respectively; and a spring 326 installed between the mounting base 323 and the round rod 321.

[0033] like Figures 7-9 As shown, the structure of the second plug-in component 43 is the same as that of the first plug-in component 32. The second plug-in component 43 is slidably connected to the cylinder 31 through the round rod 321. A second spring 44 is installed between the round rod 321 and the cylinder 31 of the second plug-in component 43.

[0034] Specifically, in the symmetrical mode, the longer blade holder 300 of the first insertion component 32 is inserted into the cylinder 31 containing the second adjustment structure 4. During the insertion process, the mounting base 323 contacts the second insertion component 43 and pushes the second insertion component 43 into the groove 42. At this time, the round rod 321 of the first insertion component 32 moves synchronously and abuts against the upper end of the cylinder 31. The abutment plate 322 of the first insertion component 32 enters the cylinder 31. Then, the mounting base 323 continues to move downward, pushing the mounting base 323 of the second insertion component 43 to move. Through the second connecting rod 325 and the first connecting rod 324 of the second insertion component 43, the abutment plate 322 is pushed relative to the groove 42. The groove 42 moves radially until the abutment 322 fits against the inner wall of the groove 42, and the second insertion component 43 unfolds within the groove 42. At the same time, the round rod 321 of the first insertion component 32 remains stationary, and the mounting base 323 moves downward. Similarly, the abutment 322 of the first insertion component 32 fits against the inner wall of the cylinder 31, and the insertion component unfolds within the cylinder 31. Through the configuration of the first insertion component 32 and the second insertion component 43, mechanical contact is only formed in the final locking stage, effectively avoiding the wear problem caused by continuous sliding friction during the traditional insertion process. This ensures that the blade holder 300 and the connecting component and the second adjustment structure 4 are in a zero state, and there is no radial displacement caused by wear.

[0035] like Figure 7 As shown, the device also includes two motors 6 for driving the first threaded rod 22 and the second threaded rod 41 to move, and a gearbox 7 for changing the rotational speed is installed between the motors 6 and the first threaded rod 22 or the second threaded rod 41.

[0036] Specifically, when the detection structure detects an absolute error between the actual eccentricity and the target eccentricity greater than or equal to 1mm, the transmission 7 is controlled to switch to a low transmission ratio mode, and the drive motor 6 runs the moving plate 21 at a high speed. When the absolute error is less than 1mm, the transmission 7 is controlled to switch to a high transmission ratio mode. Through speed graded control, the overall adjustment time is shortened and the adjustment efficiency is improved. At the same time, the high transmission ratio mode can realize micro-adjustment and ensure adjustment accuracy.

[0037] An adaptive adjustment method for the eccentricity of deep hole boring tools includes the following steps: S1. Selecting either symmetrical boring mode or stepped boring mode according to machining requirements, and installing two insert holders 300 to their corresponding tool holder 200 mounting positions; S2. The control system starts the motor 6 of the first adjustment structure, which drives the two moving plates 21 to move synchronously along the mounting plate 1 via the threaded rod 22. The moving plates 21 push the insert holders 300 and the boring inserts on them to move radially through the connecting structure 3, thereby achieving preliminary adjustment of the eccentricity; S3. When in symmetrical boring mode, maintaining the second adjustment... The threaded rod 41 of the section structure is in a zero-position locked state; when it is in the stepped boring mode, the motor 6 of the second adjustment structure is started, and the connecting structure 3 on the corresponding moving plate 21 is driven by the threaded rod 41 to make additional displacement, so that the eccentricity of the two tool holders 300 produces a preset difference, forming the radial offset required for stepped machining; S4. The displacement of the moving plate 21 is detected in real time by the laser sensor 51 and converted into the tool eccentricity. The measurement data is fed back to the control system, and the control system dynamically adjusts the output of the motor 6 of the first adjustment structure and the second adjustment structure based on the error value.

[0038] Specifically, by setting the first adjustment structure 2 and the second adjustment structure 4, a graded control adjustment is adopted to eliminate the problem of mechanical asynchrony of the twin screws, ensuring the consistency of the eccentricity of the two blades in the symmetrical mode, and ensuring the boring effect.

[0039] When the absolute error between the actual eccentricity and the target eccentricity is greater than or equal to 1mm, the control gearbox 7 switches to a low transmission ratio mode, and the drive motor 6 runs the moving plate 21 at a high speed. When the absolute error is less than 1mm, the control gearbox 7 switches to a high transmission ratio mode, and the drive motor 6 runs the moving plate 21 at a low speed to complete the final positioning.

[0040] Specifically, speed-graded control shortens the overall adjustment time and improves adjustment efficiency. Meanwhile, the high transmission ratio mode enables micro-adjustment, ensuring adjustment accuracy.

[0041] Working principle: Select either symmetrical boring mode or stepped boring mode according to machining requirements. Install the two insert holders 300 into their corresponding tool holder 200 mounting positions. When connecting the insert holder 300 and the tool holder 200, the insertion component 32 is inserted into the cylinder 31. In the stepped mode, during the insertion process, the round rod 321 of the insertion component 32 first abuts against the upper end of the cylinder 31, and the mounting base 323 continues to move downward. Through the second connecting rod 325 and the first connecting rod 324 of the insertion component 32, the abutment plate 322 is pushed to move radially relative to the groove 42 until the abutment plate 322 is in contact with the inner wall of the groove 42. The insertion component 32 then unfolds inside the cylinder 31, realizing the connection between the insert holder 300 and the cylinder 31. In the stepped mode, if the insert holder 300 is connected to the tool holder 200, the insertion component 300 is connected to the tool holder 200. In the specified mode, the longer blade holder 300 of the first insertion component 32 is inserted into the cylinder 31 containing the second adjustment structure 4. During the insertion process, the mounting base 323 contacts the second insertion component 43 and pushes the second insertion component 43 into the groove 42. At this time, the round rod 321 of the first insertion component 32 moves synchronously and abuts against the upper end of the cylinder 31. The abutment plate 322 of the first insertion component 32 enters the cylinder 31. Then, the mounting base 323 continues to move downward, pushing the mounting base 323 of the second insertion component 43 to move. If the second adjustment structure 4 is not zeroed, the second insertion component 43 cannot be inserted into the groove 42. If the second adjustment structure 4 is zeroed, the second insertion component 43 is inserted into the groove 42 and then... The second connecting rod 325 and the first connecting rod 324 of the second insertion assembly 43 push the abutment plate 322 to move radially relative to the groove 42 until the abutment plate 322 is in contact with the inner wall of the groove 42. The second insertion assembly 43 unfolds in the groove 42. At the same time, the round rod 321 of the first insertion assembly 32 remains stationary, and the mounting base 323 moves downward. Similarly, the abutment plate 322 of the first insertion assembly 32 is in contact with the inner wall of the cylinder 31, and the insertion assembly unfolds in the cylinder 31, limiting the cylinder 31 and the moving plate 21, realizing the zeroing and locking of the second adjustment structure 4. The control system starts the motor 6 of the first adjustment structure, which drives the two moving plates 21 to move synchronously along the mounting plate 1 through the threaded rod 22. The moving plates 21 are connected by the joint The mechanism 3 pushes the insert holder 300 and the boring insert on it to move radially, realizing the initial adjustment of the eccentricity. When it is in symmetrical boring mode, the threaded rod 41 of the second adjustment structure is kept in the zero-position locked state. When it is in stepped boring mode, the motor 6 of the second adjustment structure is started, and the connecting structure 3 on the corresponding moving plate 21 is driven by the threaded rod 41 to make additional displacement, so that the eccentricity of the two insert holders 300 produces a preset difference, forming the radial offset required for stepped machining. The displacement of the moving plate 21 is detected in real time by the laser sensor 51 and converted into the insert eccentricity. The measurement data is fed back to the control system. The control system dynamically adjusts the output of the motor 6 of the first adjustment structure and the second adjustment structure based on the error value.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep hole boring tool eccentricity adaptive adjustment device, comprising a mounting plate (1) mounted on the tool holder (100) of a dual-mode boring tool, characterized in that, Also includes: A first adjustment structure (2) mounted on the mounting plate (1), the first adjustment structure (2) comprising: Two movable plates (21) for driving the blade holder (300) to move, the movable plates (21) being slidably connected to the mounting plate (1); A threaded rod (22) is used to drive the two movable plates (21) to slide together, and the threaded rod (22) is rotatably connected to the mounting plate (1); A connecting structure (3) for connecting the blade holder (300) includes a cylinder (31) mounted on the movable plate (21); A second adjustment structure (4) is installed on one of the movable plates (21), and a cylinder (31) on the movable plate (21) is slidably connected to the movable plate (21). The second adjustment structure (4) includes a threaded rod (41) for driving the cylinder (31) to move, and the threaded rod (41) is rotatably connected to the movable plate (21). Measurement structure (5) for detecting the eccentricity of the two blade holders (300); The measuring structure (5) includes: Two laser sensors (51) are mounted on the cylinder (31); Two reflectors (52) are mounted on the mounting plate (1); A shield (53) is slidably mounted on the mounting plate (1); A second baffle plate (54) is slidably mounted on the cylinder (31); A connecting rod (55) drives the movement of the first shield (53) and the second shield (54), the connecting rod (55) is slidably connected to the mounting plate (1), and the second shield (54) is slidably connected to the connecting rod (55); The measuring structure (5) also includes: A channel (56) is opened on the tool holder (200) and the mounting plate (1), and a plurality of balls (59) are rolled in the channel (56). Two sealing plates (57) are slidably mounted on the channel (56), one of which is within the range of movement of the blade holder (300) fastening bolt, and the other is connected to the connecting rod (55).

2. The adaptive adjustment device for the eccentricity of deep hole boring tools according to claim 1, characterized in that: The connection structure (3) further includes a first plug-in assembly (32) mounted on the two blade holders (300), the first plug-in assembly (32) including a round rod (321) mounted on the blade holder (300).

3. The adaptive adjustment device for the eccentricity of deep hole boring tools according to claim 2, characterized in that: The two plug-in components (32) have different lengths. The second adjustment structure (4) also includes a groove (42) opened on the movable plate (21) and a plug-in component (43) that slides up and down on the cylinder (31).

4. The adaptive adjustment device for the eccentricity of deep hole boring tools according to claim 3, characterized in that: The first plug-in assembly (32) further includes: Several abutments (322) for abutting against the inner wall of the cylinder (31); A mounting base (323) is fixedly installed on the blade holder (300), the round rod (321) is slidably connected to the blade holder (300) in the upper and lower parts, and the mounting base (323) is slidably connected to the round rod (321); A first connecting rod (324) is used to connect the abutment (322) and the round rod (321). One end of the first connecting rod (324) is rotatably connected to the abutment (322), and the other end of the first connecting rod (324) is rotatably and slidably connected to the round rod (321). A second connecting rod (325) is used to connect the abutment (322) and the mounting base (323), and the two ends of the second connecting rod (325) are rotatably connected to the abutment (322) and the mounting base (323) respectively; Spring 1 (326) is installed between the mounting base (323) and the round rod (321).

5. The adaptive adjustment device for the eccentricity of deep hole boring tools according to claim 4, characterized in that: The structure of the second plug-in component (43) is the same as that of the first plug-in component (32). The second plug-in component (43) is slidably connected to the cylinder (31) through the round rod (321). A second spring (44) is installed between the round rod (321) of the second plug-in component (43) and the cylinder (31).

6. The adaptive adjustment device for the eccentricity of deep hole boring tools according to claim 5, characterized in that: The device also includes two motors (6) for driving the first threaded rod (22) and the second threaded rod (41) to move, and a gearbox (7) for changing the rotational speed is installed between the motor (6) and the first threaded rod (22) or the second threaded rod (41).

7. A method for adaptive adjustment of eccentricity of deep hole boring tools, applicable to the adaptive adjustment device for eccentricity of deep hole boring tools described in claim 6, characterized in that: Includes the following steps: S1. Select either the symmetrical boring mode or the stepped boring mode according to the machining requirements, and install the two tool holders (300) into the corresponding tool holder (200) mounting positions respectively; S2. The control system starts the motor (6) of the first adjustment structure, which drives the two moving plates (21) to move synchronously along the mounting plate (1) through the threaded rod (22). The moving plates (21) push the blade holder (300) and the boring blade on it to move radially through the connecting structure (3), so as to achieve the initial adjustment of the eccentricity. S3. When it is the symmetrical boring mode, keep the thread rod 2 (41) of the second adjustment structure in the zero-position locked state; when it is the stepped boring mode, start the motor (6) of the second adjustment structure, and drive the connecting structure (3) on the corresponding moving plate (21) to make additional displacement through the thread rod 2 (41), so that the eccentricity of the two tool holders (300) generates a preset difference, forming the radial offset required for stepped machining; S4. The displacement of the moving plate (21) is detected in real time by the laser sensor (51) and converted into the blade eccentricity. The measurement data is fed back to the control system. The control system dynamically adjusts the output of the motor (6) of the first adjustment structure and the second adjustment structure based on the error value.

8. The method for adaptive adjustment of eccentricity of deep hole boring tools according to claim 7, characterized in that: When the absolute error between the actual eccentricity and the target eccentricity is greater than or equal to 1 mm, the control gearbox (7) switches to the low transmission ratio mode and the drive motor (6) runs the moving plate (21) at high speed. When the absolute error is less than 1 mm, the control gearbox (7) switches to the high transmission ratio mode and the drive motor (6) runs the moving plate (21) at low speed to complete the final positioning.

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