A tool device and a machine tool for machining a center of gravity offset shaft

Abstract

The application relates to the technical field of machining equipment, in particular to a cutter device for machining a gravity-biased shaft and a machine tool, wherein the cutter device comprises a cutter rod, a mounting piece and a driving mechanism, one end of the cutter rod is fixedly provided with a cutter, the other end is slidably connected to a mounting seat of the mounting piece along a radial direction through a sliding plate and a sliding groove, the driving mechanism is connected to the mounting piece and drives the cutter rod to slide along the radial direction relative to the mounting seat, in addition, a transmission assembly comprises a plurality of transmission shafts and a gear set, precise radial displacement control is realized, the cutter device is further provided with a counterweight to balance the unbalanced force during cutter movement, the machining precision and efficiency are improved, and the cutter wear is reduced.

Description

A tooling device and machine tool for machining axes with an off-center center of gravity. Technical Field

[0001] This application relates to the field of machining equipment technology, and in particular to a cutting tool device and machine tool for machining a center-of-gravity offset shaft. Background Technology

[0002] Offset-center-of-gravity shaft parts refer to workpieces with complex shapes and structures. The center of gravity of the workpiece does not coincide with the center of the shaft to be machined. When machining workpieces with offset-center-of-gravity shafts, the workpiece needs to be clamped on the chuck of a lathe. The center of the shaft coincides with the center of the chuck, but the center of gravity of the workpiece does not coincide with the rotation center of the chuck. The larger the eccentricity, the more severe the off-center load during rotational machining, and the more unstable the workpiece becomes during machining. In order to improve the stability of the workpiece during machining, a counterweight needs to be added to the opposite side of the offset center of gravity to counteract the offset and improve the dynamic balance of the workpiece during rotational machining. However, adding a counterweight greatly increases the difficulty of operation and reduces the efficiency of workpiece machining. Summary of the Invention

[0003] To help improve the efficiency of workpiece machining, this application provides a tooling device and machine tool for machining axes with an off-center center of gravity.

[0004] In a first aspect, this application provides a tooling device for machining a center-of-gravity offset shaft, employing the following technical solution:

[0005] A tooling device for machining a center-of-gravity offset shaft includes a tool holder, a mounting component, and a drive mechanism. One end of the mounting component has a mounting shank, and the other end has a mounting seat. One axial end of the tool holder is fixedly equipped with a tool, and the other axial end of the tool holder is slidably connected to the mounting seat in the radial direction. The drive mechanism is connected to the mounting component and drives the tool holder to slide radially relative to the mounting seat.

[0006] By adopting the above technical solution, one end of the mounting component is provided with a mounting handle, which is used to install the mounting component on the spindle of the machining tool. One end of the tool holder is equipped with a cutting tool, and the other end is slidably mounted on the mounting seat of the mounting component. The drive mechanism drives the tool holder shaft to slide radially to perform radial feed machining. In this way, the cutting tool can directly machine a stationary shaft-type workpiece with an offset center of gravity, reducing the difficulty of counterweight operation required for workpiece rotation in related technologies, and improving machining efficiency and machining accuracy.

[0007] Optionally, the end of the mounting base away from the mounting handle is provided with a radially extending groove, and the end of the tool bar away from the tool is fixedly provided with a sliding plate adapted to the groove, the sliding plate being slidably disposed in the groove.

[0008] By adopting the above technical solution, the mounting base is provided with a radially extending groove, the sliding plate is adapted to the groove and slidably disposed in the groove, and the tool holder is fixedly installed on the sliding plate, which helps to improve the accuracy and reliability of the radial feed of the tool holder.

[0009] Optionally, a transmission block is provided on the side of the slide away from the cutter bar, and a transmission thread is provided on the transmission block along the length direction of the slide. The slide is connected to the drive mechanism through the transmission thread.

[0010] By adopting the above technical solution, a transmission block is provided on one side of the slide plate. The transmission block is provided with a transmission thread along the length of the slide plate. The drive mechanism is connected to the slide plate through the transmission thread. The drive mechanism can smoothly drive the slide plate to slide in the groove, which helps to improve the stability and reliability of the tool feed on the tool holder, thereby improving the machining accuracy of the workpiece.

[0011] Optionally, a counterweight is provided on the side of the slide plate opposite to the cutter bar, and the counterweight is detachably mounted on the slide plate.

[0012] By adopting the above technical solution, the counterweight is set on the side of the slide plate opposite to the tool holder. The counterweight is detachably installed on the slide plate, which helps to conveniently adjust the dynamic balance of the tool holder relative to the rotation center, thereby improving the smoothness of the tool holder's rotation and improving the machining accuracy of the workpiece.

[0013] Optionally, the drive mechanism includes a motor, a transmission box, and a mounting block. The mounting block is fixedly connected to the machine tool spindle for processing the workpiece. The transmission box is fixedly installed on the side of the mounting block away from the spindle, and the motor is fixedly installed on the transmission box.

[0014] By adopting the above technical solution, the motor is mounted on the transmission box, and the transmission box is fixedly mounted on the spindle of the machine tool by the mounting block. This helps to ensure the reliability of the motor and transmission box rotating with the spindle. At the same time, it facilitates the separation of the mounting parts from the drive mechanism to achieve quick tool changes.

[0015] Optionally, the transmission box includes a housing, a first transmission shaft, and a second transmission shaft. The first transmission shaft is rotatably mounted on the housing, and a first synchronous pulley is fixedly mounted on the first transmission shaft. The output shaft of the motor is connected to the first transmission shaft. The second transmission shaft is rotatably mounted on the housing and arranged parallel to the first transmission shaft. A second synchronous pulley is fixedly mounted on the second transmission shaft. The first gear pulley and the second synchronous pulley are connected by a toothed belt. The second transmission shaft is connected to a transmission assembly mounted on the mounting base.

[0016] By adopting the above technical solution, the motor is mounted on the transmission box, which is fixedly mounted on the machine tool spindle by a mounting block. This helps ensure the reliability of the motor and transmission box rotating with the spindle. The transmission box transmits the power of the motor to the first synchronous pulley through the first transmission shaft, and transmits the power of the first synchronous pulley to the second synchronous pulley through the toothed belt. The second synchronous pulley drives the second transmission shaft to rotate. The second transmission shaft is connected to the transmission assembly, thereby driving the tool holder to move radially. The transmission box is driven by the first and second synchronous pulleys, which helps to reduce the weight of the transmission box and thus reduce the rotational load of the transmission box. The second transmission shaft is connected to the transmission assembly, which helps to quickly separate the transmission box from the transmission assembly and improve the efficiency of tool changing.

[0017] Optionally, the transmission assembly includes a gear shaft, a third transmission shaft, and a fourth transmission shaft. The gear shaft is rotatably mounted on the mounting base. The third transmission shaft is arranged parallel to the gear shaft and rotatably mounted on the mounting base. An intermediate gear is coaxially fixedly mounted on the third transmission shaft, and the intermediate gear meshes with the gear shaft for transmission. The fourth transmission shaft is rotatably mounted on the mounting base, and a transmission gear is coaxially fixedly mounted on the fourth transmission shaft. The transmission gear meshes with the intermediate gear for transmission. The gear shaft is connected to the second transmission shaft for transmission.

[0018] By adopting the above technical solution, the transmission assembly, through the transmission of the gear shaft, intermediate gear, and transmission gear, facilitates the transmission of power output from the second transmission shaft to the fourth transmission shaft where the transmission gear is located. The fourth transmission shaft then transmits power to the slide plate, causing the slide plate to move radially, thus enabling the tool feed or deflection during machining operations. The transmission connection between the gear shaft and the second transmission shaft facilitates the separation or assembly of the transmission box and the transmission assembly, thereby improving the efficiency of changing and installing components.

[0019] Optionally, the transmission assembly further includes a transmission screw rotatably mounted on the mounting base. The transmission screw is arranged perpendicularly to the fourth transmission shaft. A first bevel gear is coaxially fixedly mounted on the fourth transmission shaft. A second bevel gear is fixedly mounted on the end of the transmission screw near one end. The first bevel gear and the second bevel gear are meshed and connected for transmission. The transmission screw and the transmission block are connected for transmission through the transmission thread.

[0020] By adopting the above technical solution, the first bevel gear on the fourth transmission shaft meshes with the second bevel gear on the transmission screw, thereby driving the transmission screw to rotate. The transmission screw and the transmission block are connected by a transmission thread. The rotation of the transmission screw drives the transmission block to move, thereby driving the slide plate to move radially, realizing the infeed or deflection of the tool in the machining operation, and improving the applicable workpiece machining range of the tool device.

[0021] Secondly, this application provides a machine tool for machining a center-of-gravity offset shaft, employing the following technical solution:

[0022] A machine tool for machining a center-of-gravity offset axis includes: a base, a bed, a saddle, an operating table, and a worktable. The bed is fixed to one side of the base. A rotatable spindle is provided on the bed along the X-axis. The spindle is slidably connected to the bed along the Z-axis. The tooling device for machining the center-of-gravity offset axis is mounted on the spindle. The saddle is slidably disposed on the base along the X-axis. The operating table is slidably disposed on the saddle along the Y-axis. The worktable is mounted on the operating table and the worktable is fixedly clamped to be machined.

[0023] By adopting the above technical solution, the workpiece to be processed is fixedly clamped on the worktable, the operating table is slidably set on the saddle along the Y-axis to facilitate the alignment of the workpiece to be processed, the saddle is slidably set on the base along the X-axis to facilitate longitudinal feed or deflection when processing the workpiece, and the tool device is installed on the spindle to realize radial feed or deflection on the axis of offset from the center of gravity, thereby improving the processing efficiency and processing accuracy of the workpiece to be processed.

[0024] Optionally, the worktable is rotatable around the Y-axis and Z-axis on the operating platform, and a storage rack for placing multiple installation components is provided on the side of the operating platform opposite to the worktable.

[0025] By adopting the above technical solution, the worktable can be rotated around the Y and Z axes on the operating table, which helps to accurately align the workpiece before machining, ensuring accurate workpiece positioning and improving machining precision. A storage rack is provided on the operating table to facilitate automatic replacement of different types of tools, reducing manual intervention and improving tool change speed and machining efficiency.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. One end of the mounting component has a mounting handle, which is used to mount the mounting component onto the spindle of the machine tool. One end of the tool holder is equipped with the tool, and the other end slides radially on the mounting seat of the mounting component. The drive mechanism drives the tool holder to slide radially for radial feed machining, effectively solving the problems of low efficiency of manual adjustment and difficulty in completely avoiding workpiece vibration in automated control in traditional machining methods, thus improving machining efficiency and accuracy. 2. A counterweight is provided on the side of the slide opposite to the tool holder. The counterweight is detachably mounted on the slide, which helps to easily adjust the dynamic balance of the tool holder relative to the rotation center, improves the smoothness of the tool holder's rotation, and further enhances the machining accuracy of the workpiece. 3. The drive mechanism includes a motor, a transmission box, and a mounting block. The transmission box is driven by a first synchronous pulley and a second synchronous pulley, which helps to reduce the weight of the transmission box, reduce the rotational load of the transmission box, improve the reliability and stability of the transmission system, and ensure the machining effect of the tool device in high-precision machining.

[0028] 4. The transmission assembly, through the transmission of the gear shaft, intermediate gear, and transmission gear, helps to transmit the power output from the second transmission shaft to the fourth transmission shaft where the transmission gear is located. The fourth transmission shaft facilitates the transmission of power to the slide plate, thereby causing the slide plate to move radially and realize the tool feed or deflection in the machining operation. The transmission connection between the gear shaft and the second transmission shaft facilitates the separation or assembly of the transmission box and the transmission assembly, thereby improving the work efficiency of replacing and installing parts.

[0029] 5. The first bevel gear on the fourth transmission shaft meshes with the second bevel gear on the transmission screw, thereby driving the transmission screw to rotate. The transmission screw and the transmission block are connected by a transmission thread. The rotation of the transmission screw drives the transmission block to move, thereby driving the slide plate to move radially, realizing the infeed or defecation of the tool in the machining operation, and improving the applicable workpiece machining range of the tool device.

[0030] 6. The workpiece to be processed is fixedly clamped on the worktable. The operating table is slidably mounted on the saddle along the Y-axis to facilitate the alignment of the workpiece to be processed. The saddle is slidably mounted on the base along the X-axis to facilitate longitudinal feed or deflection when processing the workpiece. The tool device is mounted on the spindle to realize radial feed or deflection on the axis of offset center of gravity, which improves the processing efficiency and processing accuracy of the workpiece to be processed.

[0031] 7. The worktable, rotating around the Y and Z axes, is mounted on the operating platform, facilitating precise workpiece alignment before machining, ensuring accurate workpiece positioning, and improving machining precision. A storage rack on the operating platform allows for automatic replacement of different types of tools, reducing manual intervention and increasing tool change speed and machining efficiency. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the tool device structure disclosed in this application for machining a center-of-gravity offset shaft.

[0033] Figure 2 is a schematic diagram of the machine tool disclosed in this application for machining a center-of-gravity offset shaft.

[0034] Figure 3 is a structural schematic diagram of the skateboard from the top view disclosed in this application.

[0035] Figure 4 is a structural schematic diagram of the skateboard from the bottom view disclosed in this application.

[0036] Figure 5 is a cross-sectional view along line AA in Figure 1.

[0037] Figure 6 is a full sectional view of the tooling device for machining a center-of-gravity offset shaft disclosed in this application.

[0038] Figure 7 is a magnified view of position I in Figure 6.

[0039] This application discloses a schematic diagram of a tooling device for machining a center-of-gravity offset shaft.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Tool holder; 11. Tool; 2. Mounting component; 21. Mounting shank; 22. Mounting base; 221. Slide groove; 23. Slide plate; 231. Transmission block; 2311. Transmission thread; 232. Guide part; 233. Positioning groove; 234. Threaded hole; 24. Counterweight; 3. Drive mechanism; 31. Motor; 32. Transmission box; 321. Box body; 322. First transmission shaft; 323. Second transmission shaft; 3231. Slotted groove; 324. First synchronous pulley; 325. Second synchronous pulley; 326. Gear 33. Mounting block; 34. Transmission assembly; 341. Gear shaft; 3411. Slotted head; 342. Third transmission shaft; 343. Fourth transmission shaft; 344. Intermediate gear; 345. Transmission gear; 346. First bevel gear; 347. Transmission screw; 348. Second bevel gear; 100. Machine tool; 101. Base; 102. Bed; 1021. Spindle; 103. Saddle; 104. Operating table; 105. Worktable; 106. Storage rack; 107. Fixture; 108. Workpiece. Detailed Implementation

[0042] The present application will be further described in detail below with reference to Figures 1 to 7.

[0043] This application discloses a tooling device for machining a center-of-gravity offset shaft.

[0044] A tooling device for machining a center-of-gravity offset shaft. Referring to Figures 1 and 2, it includes a tool holder 1, a mounting component 2, and a drive mechanism 3. The mounting component 2 is a rotating body that rotates about its central axis. One end of the mounting component 2 is provided with a mounting shank 21, the shape of which is adapted to the inner hole of a spindle 1021. The mounting shank 21 can be inserted into the inner hole of the spindle 1021 of the machine tool 100 and is fixedly connected to the spindle 1021. The other end of the mounting component 2 is provided with a mounting seat 22 for mounting the tool holder 1. A tool 11 is fixedly mounted on one axial end of the tool holder 1. The other end of the tool holder 1 is slidably connected to the mounting base 22 in the radial direction. The drive mechanism 3 is connected to the mounting part 2 and drives the tool holder 1 to slide radially relative to the mounting base 22, so that the tool 11 performs radial feed machining relative to the workpiece 108, or the tool 11 is disengaged from the workpiece 108. In this way, the tool 11 can directly machine the relatively stationary and fixed shaft workpiece 108 with an offset center of gravity, which reduces the difficulty of the related technology that requires counterweight operation for the rotation of the workpiece 108, and improves the machining efficiency and machining accuracy.

[0045] Referring to Figures 1, 3, and 4, the end of the mounting base 22 away from the mounting handle 21 is provided with two radially extending grooves 221. Two guide portions 232 are provided on both sides of the slide plate 23 in the width direction. The guide portions 232 are arranged along the length direction of the slide plate 23 and are adapted to the grooves 221. The two guide portions 232 can slide in the two grooves 221 respectively. The slide plate 23 slides within the grooves 221 via the two guide portions 232, improving the guiding stability of the slide plate 23. The end of the slide plate 23 away from the guide portions 232 is provided with a positioning groove 233 and multiple threaded holes 234 arranged along the length direction. The end of the tool holder away from the tool is provided with a positioning block, which is adapted to the positioning groove 233. The positioning groove 233 is used to position the tool holder 1 during installation, improving the reliability of the installation and increasing the tool holder 1's ability to withstand torque loads. The multiple threaded holes 234 are used to install the tool holder 1 and the counterweight 24, improving the reliability of the tool holder 1 installation, and thus helping to improve the accuracy and reliability of the radial feed of the tool holder 1.

[0046] Referring to Figures 3 and 4, a transmission block 231 is provided on the side of the slide plate 23 away from the tool holder 1. The transmission block 231 is located between the two guide parts 232. The transmission block 231 is provided with a transmission thread 2311 along the length direction of the slide plate 23. The slide plate 23 is connected to the drive mechanism 3 through the transmission thread 2311. The transmission block 231 is provided on one side of the slide plate 23. The transmission block 231 is provided with a transmission thread 2311 along the length direction of the slide plate 23. The drive mechanism 3 is connected to the slide plate 23 through the transmission thread 2311. The drive mechanism 3 can smoothly drive the slide plate 23 to slide in the slide groove 221, which helps to improve the stability and reliability of the tool 11 on the tool holder 1, thereby improving the machining accuracy of the workpiece 108.

[0047] Referring to Figure 1, a counterweight 24 is provided on the side of the slide plate 23 opposite to the tool holder 1. The counterweight 24 is detachably mounted on the slide plate 23. In this embodiment, the counterweight 24 is fixed to the slide plate 23 by screws. In other embodiments of this application, it can also be fixed to the slide plate 23 by snap-fit. This helps to conveniently adjust the position of the counterweight 24 on the slide plate 23, thereby adjusting the dynamic balance between the tool holder 1 and the counterweight 24 relative to the rotation center, thereby improving the smoothness of the rotation of the tool holder 1 and improving the machining accuracy of the workpiece 108.

[0048] Referring to Figures 1 and 5, the drive mechanism 3 includes a motor 31, a transmission box 32, and a mounting block 33. The mounting block 33 is fixedly connected to the spindle 1021 of the machine tool 100 used for processing the workpiece 108. The mounting block 33 is provided with multiple mounting holes, through which screws are passed and fastened to the end face of the spindle 1021. The transmission box 32 is fixedly installed on the side of the mounting block 33 away from the spindle 1021. The motor 31 is fixedly installed on the transmission box 32. The mounting of the transmission box 32 on the mounting block 33 and the mounting of the motor 31 on the transmission box 32 helps to ensure the reliability of the motor 31 and the transmission box 32 as they rotate with the spindle 1021. At the same time, it facilitates the separation of the mounting part 2 from the drive mechanism 3 to achieve quick tool change 11.

[0049] Referring to Figure 5, the transmission box 32 includes a housing 321, a first transmission shaft 322, and a second transmission shaft 323. The first transmission shaft 322 is rotatably supported on the housing 321 at both ends by mounting bearings. A first synchronous pulley 324 is fixedly mounted on the first transmission shaft 322. The output shaft of the motor 31 is connected to the first transmission shaft 322 via a coupling. The second transmission shaft 323 is also rotatably mounted on the housing 321 via bearings. The second transmission shaft 323 is arranged parallel to the first transmission shaft 322. A second synchronous pulley 325 is fixedly mounted on the second transmission shaft 323. The first synchronous pulley 324 and the second synchronous pulley 325 are connected by a toothed belt 326. The second transmission shaft 323 is connected to a transmission assembly 34 mounted on a mounting base 22. The motor 31 is mounted on the transmission box 32, which is fixedly mounted by a mounting block 33. Mounted on the spindle 1021 of the machine tool 100, the transmission box 32 helps ensure the reliability of the motor 31 and the transmission box 32 as they rotate with the spindle 1021. The transmission box 32 transmits the power of the motor 31 to the first synchronous pulley 324 through the first transmission shaft 322, and transmits the power of the first synchronous pulley 324 to the second synchronous pulley 325 through the toothed belt 326. The second synchronous pulley 325 drives the second transmission shaft 323, which is connected to the transmission assembly 34, thereby driving the tool holder 1 to move radially. The transmission box 32 is driven by the first synchronous pulley 324 and the second synchronous pulley 325, which helps to reduce the weight of the transmission box 32 and thus reduce the rotational load of the transmission box 32. The second transmission shaft 323 is connected to the transmission assembly 34, which helps to quickly separate the transmission box 32 from the transmission assembly 34 and improve the working efficiency of changing the tool 11.

[0050] Referring to Figures 6 and 7, the transmission assembly 34 includes a gear shaft 341, a third transmission shaft 342, and a fourth transmission shaft 343. The gear shaft 341 is rotatably mounted on the mounting base 22 via bearings. The gear shaft 341 is coaxially arranged with the second transmission shaft 323. The third transmission shaft 342 is arranged parallel to the gear shaft 341 and is rotatably mounted on the mounting base 22 via bearings. An intermediate gear 344 is coaxially fixed on the third transmission shaft 342 and meshes with the gear shaft 341 for transmission. The fourth transmission shaft 343 is rotatably mounted on the mounting base 22 and coaxially fixed with a transmission gear 345. The transmission gear 345 meshes with the intermediate gear 344 for transmission. The gear shaft 341 is connected to the second transmission shaft 323 for transmission. It should be noted that, in this application, one end of the gear shaft 341 connected to the second transmission shaft 323 is provided with a slot 3411 on one end and a slot 3231 on the other end. 1. It is compatible with the slot 3411. The slot 3411 passes through the slot 3231 to realize the transmission connection between the gear shaft 341 and the second transmission shaft 323. Through such a transmission structure, the transmission box 32 and the mounting part 2 can be quickly assembled and separated, and the cutting tool 11 on the tool holder 1 can be quickly replaced, improving the tool changing efficiency. Of course, in other embodiments of this application, the end of the gear shaft 341 and the second transmission shaft 323 can also be provided with a slot at either end and a slot at the other end. Any structure that can be quickly assembled and disassembled while reliably transmitting power is acceptable. The transmission component 34, through the transmission of the gear shaft 341, the intermediate gear 344, and the transmission gear 345, helps to transmit the power output from the second transmission shaft 323 to the fourth transmission shaft 343 where the transmission gear 345 is located. The fourth transmission shaft 343 facilitates the transmission of power to the slide plate 23, thereby causing the slide plate 23 to move radially, realizing the tool feed or deflection in the machining operation.

[0051] Referring to Figure 6, the transmission assembly 34 also includes a transmission screw 347, which is arranged perpendicularly to the fourth transmission shaft 343. The transmission screw 347 is rotatably mounted on the mounting base 22 via bearings. A first bevel gear 346 is coaxially fixed to the fourth transmission shaft 343, and a second bevel gear 348 is fixed to one end of the transmission screw 347. Both ends of the transmission screw 347 are fixed to the inner rings of the bearings via nuts, thereby restricting the axial movement of the transmission screw 347. The first bevel gear 346 and the second bevel gear 348 are meshed and connected for transmission. The transmission screw 347 is connected to the transmission block 231 via a transmission thread 2311. The first bevel gear 346 on the fourth transmission shaft 343 is connected to the transmission block 231 via a transmission thread 2311. The second bevel gear 348 on the moving lead screw 347 engages in a transmission connection, thereby driving the transmission lead screw 347 to rotate. The transmission lead screw 347 and the transmission block 231 are connected by a transmission thread 2311. The rotation of the transmission lead screw 347 drives the transmission block 231 to move, thereby driving the slide plate 23 to move radially, realizing the feed or deflection of the tool in the machining operation, which improves the applicable workpiece 108 machining range of the tool 11 device. It should be noted that the mounting base 22 has an internal mounting cavity for fitting and mounting the gear shaft 341, the third transmission shaft 342 and the fourth transmission shaft 343 and related bearings on the transmission assembly 34. The mounting base 22 can be assembled in modules, which can be disassembled and installed to facilitate related maintenance operations.

[0052] This application also discloses a machine tool for machining a center-of-gravity offset shaft.

[0053] A machine tool for machining a center-of-gravity offset axis, referring to Figures 1 and 2, includes: a base 101, a bed 102, a saddle 103, an operating table 104, and a worktable 105. The bed 102 is fixed to one side of the base 101. A rotatable spindle 1021 is provided on the bed 102 along the X-axis, and the spindle 1021 is slidably connected to the bed 102 along the Z-axis. A tooling device for machining the center-of-gravity offset axis is mounted on the spindle 1021. The saddle 103 is slidably disposed on the base 101 along the X-axis, and the operating table 104 is slidably disposed along the Y-axis. On the saddle 103, the worktable 105 is mounted on the operating table 104. The workpiece 108 to be processed is fixedly clamped on the worktable 105. The operating table 104 is slidably mounted on the saddle 103 along the Y-axis to facilitate the alignment of the workpiece 108 to be processed. The saddle 103 is slidably mounted on the base 101 along the X-axis to facilitate longitudinal feed or deflection when processing the workpiece 108. The tool 11 device is mounted on the spindle 1021 to realize radial feed or deflection on the axis of offset from the center of gravity, thereby improving the processing efficiency and processing accuracy of the workpiece 108 to be processed.

[0054] Referring to Figure 2, the worktable 105 is rotatable on the operating table 104, capable of rotating around the Y-axis and Z-axis. On the opposite side of the worktable 105 on the operating table 104, a storage rack 106 for placing multiple mounting parts 2 is provided. The rotatable worktable 105 on the operating table 104 facilitates precise alignment of the workpiece 108 before machining by the tool 11 device, ensuring accurate positioning of the workpiece 108 and improving machining accuracy. The storage rack 106 on the operating table 104 facilitates automatic replacement of different types of tools 11, reducing manual intervention and improving tool change speed and machining efficiency.

[0055] The working principle of the machine tool used in this embodiment for machining a center-of-gravity offset shaft is as follows: The workpiece 108 is clamped onto the worktable 105 using the fixture 107, with the shaft portion of the workpiece 108 to be machined facing the spindle 1021. The saddle 103 is moved in the X-axis direction, the operating table 104 is moved in the Y-axis direction, and the spindle 1021 is moved in the Z-axis direction. The worktable 105 is rotated around the Z-axis and around the Y-axis, so that the shaft portion of the workpiece 108 to be machined on the worktable 105 is coaxial with the spindle 1021. The spindle 1021 is rotated, causing the tool 11 on the tool holder 1 to rotate around the shaft portion. The motor 31 is started to drive the tool holder 1 to move radially to feed the tool, machining the shaft portion of the workpiece 108. After machining is completed, the motor 31 reverses and drives the tool 11 on the tool holder 1 to move away from the workpiece 108. Then, the operating table 104 moves along the Z-axis, causing the storage rack 106 to move toward the spindle 1021. The saddle 103 moves along the X-axis toward the spindle 1021. When the spindle 1021 approaches the empty tool position of the storage rack 106, the mounting handle 21 on the mounting part 2 disengages from the spindle 1021, and the transmission connection between the second drive shaft 323 and the gear shaft 341 disengages. The mounting part 2 is placed on the storage rack 106. The above actions are repeated, and the spindle 1021 inserts the required mounting part 2 from the storage rack 106. The required tool 11 is mounted on the mounting part 2. The second drive shaft 323 mates with the slotted head 3411 and slotted groove 3231 of the gear shaft 341 on the mounting part 2, completing the tool change action to process the stepped shaft or transition slope of the workpiece 108.

[0056] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A machine tool for machining shafts with an offset center of gravity, characterized in that, The system includes a base (101), a bed (102), a saddle (103), an operating table (104), and a worktable (105). The bed (102) is fixed to one side of the base (101). A rotatable spindle (1021) is provided on the bed (102) along the X-axis. The spindle (1021) is slidably connected to the bed (102) along the Z-axis. A tool device for machining a center-of-gravity offset axis is mounted on the spindle (1021). The tool device for machining the center-of-gravity offset axis includes a tool holder (1), a mounting component (2), and a drive mechanism (3). One end of the mounting component (2) is provided with a mounting handle (21), and the other end is provided with a mounting seat (22). A tool (1) is fixedly mounted on one axial end of the tool holder (1). 1) The other end of the axial direction of the tool holder (1) is slidably connected to the mounting base (22) in the radial direction. The driving mechanism (3) is connected to the mounting part (2) to drive the tool holder (1) to slide radially relative to the mounting base (22), so that the tool (11) performs radial feed machining relative to the center of gravity offset axis, or makes the tool (11) disengage from the center of gravity offset axis. The tool (11) can directly machine the relatively stationary center of gravity offset axis. The end of the mounting base (22) away from the mounting handle (21) is provided with a radially extending groove (221). The end of the tool holder (1) away from the tool (11) is fixed with a sliding plate (23) adapted to the groove (221). The width direction of the sliding plate (23) is... Two guide portions (232) are provided on both sides of the slide plate (23). The guide portions (232) are arranged along the length direction of the slide plate (23). The guide portions (232) are adapted to the slide groove (221). The slide plate (23) is slidably disposed in the slide groove (221). A counterweight (24) is provided on the side of the slide plate (23) opposite to the tool holder (1). The counterweight (24) is detachably mounted on the slide plate (23). The drive mechanism (3) includes a motor (31), a transmission box (32), and a mounting block (33). The mounting block (33) is fixedly connected to the spindle (1021) of the machine tool (100) used for processing. The transmission box (32) is fixedly mounted on the mounting block (33) away from the spindle (1021). On the side, the motor (31) is fixedly mounted on the transmission box (32); the transmission box (32) includes a second transmission shaft (323), the second transmission shaft (323) is connected to a transmission assembly (34) on the mounting base (22), the transmission assembly (34) includes a gear shaft (341), one end of the gear shaft (341) is connected to the second transmission shaft (323) by setting a head (3411) on either end and a slot (3231) on the other end, the slot (3231) and the head (3411) are adapted to each other, and the head (3411) passes through the slot (3231) to realize the transmission connection between the gear shaft (341) and the second transmission shaft (323);The saddle (103) is slidably mounted on the base (101) along the X-axis, and the operating table (104) is slidably mounted on the saddle (103) along the Y-axis. The worktable (105) is mounted on the operating table (104), and the worktable (105) is fixedly clamped to the offset axis to be processed, so that the shaft portion of the offset axis to be processed on the worktable (105) is coaxial with the spindle (1021). Rotating the spindle (1021) causes the tool (11) on the tool holder (1) to rotate around the shaft portion.

2. The machine tool for machining a center-of-gravity offset shaft according to claim 1, characterized in that, The slide plate (23) is provided with a transmission block (231) on the side away from the cutter bar (1). The transmission block (231) is provided with a transmission thread (2311) along the length direction of the slide plate (23). The slide plate (23) is connected to the drive mechanism (3) through the transmission thread (2311).

3. The machine tool for machining a center-of-gravity offset shaft according to claim 2, characterized in that, The transmission box (32) further includes a box body (321) and a first transmission shaft (322). The first transmission shaft (322) is rotatably mounted on the box body (321). A first synchronous pulley (324) is fixedly mounted on the first transmission shaft (322). The output shaft of the motor (31) is connected to the first transmission shaft (322) for transmission. A second transmission shaft (323) is rotatably mounted on the box body (321) and arranged parallel to the first transmission shaft (322). A second synchronous pulley (325) is fixedly mounted on the second transmission shaft (323). The first synchronous pulley (324) and the second synchronous pulley (325) are connected for transmission through a toothed belt (326).

4. The machine tool for machining a center-of-gravity offset shaft according to claim 3, characterized in that, The transmission assembly (34) further includes a third transmission shaft (342) and a fourth transmission shaft (343). The gear shaft (341) is rotatably mounted on the mounting base (22). The third transmission shaft (342) is arranged parallel to the gear shaft (341) and rotatably mounted on the mounting base (22). An intermediate gear (344) is coaxially fixedly mounted on the third transmission shaft (342). The intermediate gear (344) meshes with the gear shaft (341) for transmission. The fourth transmission shaft (343) is rotatably mounted on the mounting base (22). A transmission gear (345) is coaxially fixedly mounted on the fourth transmission shaft (343). The transmission gear (345) meshes with the intermediate gear (344) for transmission. The gear shaft (341) is connected to the second transmission shaft (323) for transmission.

5. The machine tool for machining a center-of-gravity offset shaft according to claim 4, characterized in that, The transmission assembly (34) further includes a transmission screw (347) rotatably mounted on the mounting base (22). The transmission screw (347) is arranged perpendicularly to the fourth transmission shaft (343). The fourth transmission shaft (343) is coaxially fixed with a first bevel gear (346). A second bevel gear (348) is fixed at one end of the transmission screw (347). The first bevel gear (346) and the second bevel gear (348) are meshed and connected for transmission. The transmission screw (347) and the transmission block (231) are connected for transmission through the transmission thread (2311).

6. The machine tool for machining a center-of-gravity offset shaft according to claim 1, characterized in that, The worktable (105) is rotatably mounted on the operating table (104) around the Y-axis and Z-axis. On the side of the operating table (104) opposite to the worktable (105), there is a storage rack (106) for placing multiple mounting parts (2).

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