High-precision horizontal machining center

Abstract

The invention provides a high-precision horizontal machining center. A high-precision horizontal machining center comprises a base, a rack is arranged behind the base, and a feeding mechanism is fixedly connected to the base. The clamping plate is used for clamping the external corner of the thin-wall box body workpiece, so that the clamping rigidity and the force transmission efficiency are remarkably improved, the defects of a traditional clamping mode are effectively overcome, the plane area of the thin-wall box body workpiece is clamped through a vice or a pressing plate in the prior art, and due to the fact that the thin-wall box body workpiece is poor in rigidity, the force transmission efficiency is greatly improved. In the clamping process, if the clamping force is too large, local stress concentration is likely to be caused, the workpiece is warped or deformed, and then the planeness and subsequent machining precision of the thin-wall box workpiece are affected, and if the clamping force is too small, the thin-wall box workpiece is likely to shift due to factors such as cutting force, and therefore the planeness and subsequent machining precision of the thin-wall box workpiece are improved by clamping the external corner of the thin-wall box workpiece. According to the clamp, the local stress can be dispersed while enough clamping stability is provided, the workpiece deformation risk is reduced, and the machining precision and reliability are improved.

Description

A high-precision horizontal machining center Technical Field

[0001] This application relates to the field of machining center technology, specifically to a high-precision horizontal machining center. Background Technology

[0002] In the field of mechanical manufacturing, thin-walled workpieces are widely used in high-tech fields such as aerospace, precision instruments, and automotive industries due to their lightweight structure and high material utilization rate.

[0003] However, thin-walled workpieces have relatively weak rigidity and are easily deformed during processing due to improper clamping, seriously affecting machining accuracy and finished product quality. Currently, common clamping methods mostly use general-purpose fixtures (such as vises, clamping plates, etc.) to clamp the outer surface or end face of the workpiece. This clamping method lacks specificity for the geometric characteristics of the workpiece: for box-shaped workpieces, usually only their planar areas are clamped. If the clamping force is too large, it is easy to cause local stress concentration, leading to warping or deformation of the workpiece; if the clamping force is too small, the workpiece is prone to displacement during processing; for cylindrical workpieces, they often rely on external clamping or internal clamping. Clamping fixtures are not only complex to install, but also have uneven clamping force distribution, which can easily cause roundness distortion or surface damage. In addition, existing clamping mechanisms usually do not have adaptive adjustment functions, making it difficult to automatically center and fine-tune according to the actual position of the workpiece, further affecting clamping accuracy and efficiency. At the same time, during tool overhang machining, the tool is prone to deformation and vibration due to insufficient tool rigidity, which further affects machining quality and tool life. At present, although some equipment has tried to use auxiliary support or vibration damping devices, most of them have problems such as complex structure, inconvenient adjustment, poor adaptability, or inability to respond to changes in machining status in real time. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the purpose of this application is to provide a high-precision horizontal machining center.

[0005] This application describes a high-precision horizontal machining center, comprising a base, a frame at the rear of the base, a feed mechanism fixedly connected to the base, an X-axis moving mechanism fixedly connected to the frame, a Y-axis moving mechanism fixedly connected to the X-axis moving mechanism, a slide fixedly connected to the Y-axis moving mechanism, a spindle seat fixedly connected to the slide, and a tool head mounted on the spindle seat; a worktable fixedly connected to the feed mechanism, a T-shaped rotary table rotatably connected to the worktable, a first fixed ring fixedly connected to the outer ring of the T-shaped rotary table, a plurality of L-shaped plates provided on the first fixed ring, the L-shaped plates being inclined at 45 degrees, a first push rod fixedly connected to the L-shaped plate, a clamping plate fixedly connected to the telescopic end of the first push rod, the clamping plate having an isosceles right-angled triangle cross-section, its inner right-angled surface being used to clamp thin-walled box-shaped workpieces, a torsion spring rod rotatably connected to the clamping plate, an arc-shaped pressure plate with elastic deformation capability fixedly connected to the torsion spring rod; and a pressing mechanism for pressing the workpiece connected to the worktable.

[0006] Furthermore, it is particularly preferred that the arc-shaped pressure plate has an arc surface.

[0007] Furthermore, it is particularly preferred that the first fixing ring has multiple adjustment grooves along its circumference, and the L-shaped plate is bolted through the plate and screwed into the selected adjustment groove to achieve position fixation.

[0008] Furthermore, it is particularly preferred that a second push rod is fixedly connected to the T-shaped rotary table, and the telescopic end of the second push rod is fixedly connected to a connecting plate located inside the T-shaped rotary table, and a plurality of first ball bearings distributed in a matrix are rotatably connected to the connecting plate.

[0009] Furthermore, it is particularly preferred that the first ball is capable of smooth rotation on the connecting disc and that the surface of the first ball is smooth.

[0010] Furthermore, it is particularly preferred that two support plates are fixedly mounted on the T-shaped rotating platform in a front-to-back arrangement, a U-shaped plate is fixedly mounted on the support plate, and a guide rod and a take-up roller are rotatably connected to the U-shaped plate from top to bottom. A first motor is fixedly mounted on the U-shaped plate, and the output end of the first motor is fixedly connected to the take-up roller. An elastic cloth is wound between the two take-up rollers, and a scraper is fixedly mounted on the rear support plate.

[0011] Furthermore, it is particularly preferred that the scraper is arranged at an angle.

[0012] Furthermore, it is particularly preferred that the pressing mechanism includes a hydraulic cylinder fixedly connected to the worktable, a fixed plate fixedly connected to the telescopic end of the hydraulic cylinder, a second motor fixedly connected to the fixed plate, a pressing plate rotatably connected to the fixed plate, and the output end of the second motor fixedly connected to the pressing plate.

[0013] Furthermore, it is particularly preferred that a connecting ring is installed on the spindle seat, and multiple vibration sensing heads for monitoring the vibration of the tool head are fixedly connected to the connecting ring. A third push rod is fixedly connected to the spindle seat, and a connecting frame is fixedly connected to the telescopic end of the third push rod. Multiple spring telescopic rods are slidably connected to the connecting frame. A second ball bearing is rotatably connected to the telescopic end of the spring telescopic rod. A contact block is fixedly connected to the spring telescopic rod. An elastic element is provided at the fixed end of the spring telescopic rod and fixedly connected to the connecting frame and the contact block. A fourth push rod is fixedly connected to the slide block, and a second fixing ring is fixedly connected to the telescopic end of the fourth push rod. Multiple wedge-shaped blocks acting on the contact block are fixedly connected to the second fixing ring.

[0014] Furthermore, it is particularly preferred that the spring telescopic rod and the vibration sensing head are misaligned.

[0015] The advantages of the high-precision horizontal machining center described in this application are: A. The present invention uses the elastic cloth on the top of the first ball to make the contact area between the elastic cloth and the first ball partially bulge upward, thereby converting the static support of the thin-walled box workpiece from the T-shaped rotary table to the rolling support of the first ball. This structure helps to make subsequent fine adjustments to the position of the thin-walled box workpiece, and at the same time significantly reduces the frictional resistance at the bottom of the thin-walled box workpiece.

[0016] B. The present invention also achieves position correction of the thin-walled box workpiece in the plane by automatically pushing and adjusting the arc-shaped pressure plate on the clamping plate when the thin-walled box workpiece is not in the centered position and shifts. Specifically, if the thin-walled box workpiece shifts to the rear, rear left or rear right, the rear arc-shaped pressure plate will push it forward, and if the thin-walled box workpiece shifts to the front, front left or front right, the corresponding front arc-shaped pressure plate will push it backward.

[0017] C. This invention also significantly improves clamping rigidity and force transmission efficiency by using a clamping plate to hold the external corner of the thin-walled box-shaped workpiece. This effectively avoids the shortcomings of traditional clamping methods. Existing methods often use hydraulic / pneumatic vises or pressure plates to clamp the planar area of ​​the thin-walled box-shaped workpiece. However, due to the poor rigidity of the thin-walled box-shaped workpiece, if the clamping force is too large, it will cause elastic deformation or even plastic deformation of the thin-walled box-shaped workpiece, thereby affecting the flatness of the thin-walled box-shaped workpiece and the subsequent machining accuracy. If the clamping force is too small, the thin-walled box-shaped workpiece is prone to displacement due to cutting forces and other factors. Thus, by clamping the external corner of the thin-walled box-shaped workpiece, sufficient clamping stability can be provided while dispersing local stress, reducing the risk of workpiece deformation, and improving machining accuracy and reliability.

[0018] D. The present invention also uses an inclined scraper to continuously scrape off the processing debris from the surface of the elastic cloth. The scraped debris slides off along the inclined surface of the scraper to avoid accumulation. This cleaning mechanism not only keeps the surface of the elastic cloth clean and prevents debris from affecting the flatness and processing accuracy of subsequent thin-walled box workpieces, but also isolates debris from entering the gap between the first ball and the connecting plate, ensuring smooth rotation of the first ball.

[0019] E. The present invention also utilizes the elastic deformation of the arc-shaped pressure plate to gradually adhere to the annular surface of the thin-walled cylindrical workpiece. This deformation significantly increases the contact area between the arc-shaped pressure plate and the thin-walled cylindrical workpiece, thereby forming a more uniform and robust clamping effect. This design avoids the problems that may arise if the arc-shaped pressure plate is not deformable: if clamping is only achieved through the small contact area of ​​the arc surfaces at both ends, local pressure concentration will occur, which may easily produce clamping marks or slight local deformation on the surface of the thin-walled cylindrical workpiece, thus affecting its processing accuracy and finished product quality. At the same time, during the deformation and fitting process of the arc-shaped pressure plate, the structural design of its arc surfaces at both ends can smoothly contact the workpiece surface, effectively avoiding scratches or abrasions on the annular surface of the thin-walled cylindrical workpiece, thereby ensuring the reliability of the appearance of the thin-walled cylindrical workpiece and the processing process.

[0020] F. The present invention also provides additional dynamic support for the overhanging cutter head by rotating the second ball on the spring telescopic rod. This prevents the overhanging cutter head from being easily deformed by the force of the workpiece during machining, and also prevents it from easily generating chatter, which would affect the machining accuracy of the workpiece. In addition, by setting the second ball, the cutter head can drive the second ball to rotate together when it rotates, thereby reducing the frictional loss between the two. Attached Figure Description

[0021] Figure 1 is a first-view structural schematic diagram of a high-precision horizontal machining center according to this application; Figure 2 is a second-view structural schematic diagram of a high-precision horizontal machining center according to this application; Figure 3 is a first partial structural schematic diagram of a high-precision horizontal machining center according to this application; Figure 4 is an enlarged view of point A of a high-precision horizontal machining center according to this application; Figure 5 is a first partial sectional view of a high-precision horizontal machining center according to this application; Figure 6 is a second partial sectional view of a high-precision horizontal machining center according to this application; Figure 7 is a structural schematic diagram of the pressing mechanism of a high-precision horizontal machining center according to this application; Figure 8 is a schematic diagram of a high-precision horizontal machining center according to this application. Figure 9 is a diagram showing the state of the arc-shaped pressure plate 16 when the machining center clamps the thin-walled box-shaped workpiece 01; Figure 10 is a diagram showing the state of the arc-shaped pressure plate 16 when the high-precision horizontal machining center of this application clamps the thin-walled cylindrical workpiece 02; Figure 11 is a diagram showing the second state of the arc-shaped pressure plate 16 when the high-precision horizontal machining center of this application clamps the thin-walled cylindrical workpiece 02; Figure 12 is a diagram showing the second partial structure of the high-precision horizontal machining center of this application; Figure 13 is a diagram showing the third partial structure of the high-precision horizontal machining center of this application.

[0022] Explanation of reference numerals in the attached drawings: 1-base, 2-frame, 3-feed mechanism, 4-X-axis moving mechanism, 5-Y-axis moving mechanism, 6-slide, 7-spindle seat, 8-tool head, 9-worktable, 10-T-shaped rotary table, 11-first fixing ring, 11a-adjusting groove, 12-L-shaped plate, 13-first push rod, 14-clamping plate, 15-torsion spring rod, 16-arc-shaped pressure plate, 16a-arc surface, 17-bolt, 18-second push rod, 19-connecting plate, 20-first ball bearing; 21-support plate, 22- U-shaped plate, 23-guide rod, 24-rewinding roller, 25-first motor, 26-elastic cloth, 27-scraper; 31-hydraulic cylinder, 32-fixed plate, 33-second motor, 34-pressing plate; 41-connecting ring, 42-vibration sensor head, 43-third push rod, 44-connecting frame, 45-spring telescopic rod, 46-second ball bearing, 47-contact block, 48-fourth push rod, 49-second fixed ring, 50-wedge block, 51-elastic element; 01-thin-walled box-shaped workpiece, 02-thin-walled cylindrical workpiece. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] To simplify the disclosure of this invention, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials. Example 1

[0025] A high-precision horizontal machining center, as shown in Figures 1-10, includes a base 1, a frame 2 located behind the base 1, a feed mechanism 3 fixedly connected to the base 1, an X-axis moving mechanism 4 fixedly connected to the frame 2, a Y-axis moving mechanism 5 fixedly connected to the X-axis moving mechanism 4, a slide 6 fixedly connected to the Y-axis moving mechanism 4, a spindle seat 7 fixedly connected to the slide 6, and a tool head 8 mounted on the spindle seat 7; a worktable 9 fixedly connected to the feed mechanism 3, a T-shaped rotary table 10 rotatably connected to the worktable 9, and a first fixed ring fixedly connected to the outer ring surface of the T-shaped rotary table 10. 11. The first fixed ring 11 is provided with multiple L-shaped plates 12. The L-shaped plates 12 are set at an inclination of 45 degrees. A first push rod 13 is fixedly connected to the L-shaped plate 12. The telescopic end of the first push rod 13 is fixedly connected to a clamping plate 14. The cross-section of the clamping plate 14 is an isosceles right triangle. Its inner right-angled surface is used to clamp the thin-walled box workpiece 01. A torsion spring rod 15 is rotatably connected to the clamping plate 14. An arc-shaped pressure plate 16 with elastic deformation capability is fixedly connected to the torsion spring rod 15. A pressing mechanism for pressing the workpiece is connected to the worktable 9.

[0026] The curved pressure plate 16 has a curved surface 16a.

[0027] The first fixing ring 11 has multiple adjustment grooves 11a along its circumference. The L-shaped plate 12 passes through the plate with bolts 17 and is screwed into the selected adjustment groove 11a, thereby fixing its position.

[0028] A second push rod 18 is fixedly connected to the T-shaped rotary table 10. The telescopic end of the second push rod 18 is fixedly connected to a connecting plate 19 located inside the T-shaped rotary table 10. Multiple first ball bearings 20 arranged in a matrix are rotatably connected to the connecting plate 19.

[0029] The first ball bearing 20 can rotate smoothly on the connecting plate 19, and the surface of the first ball bearing 20 is smooth.

[0030] Two support plates 21 are fixedly mounted on the T-shaped rotary table 10, arranged in a front-to-back pattern. A U-shaped plate 22 is fixedly mounted on the support plate 21. A guide rod 23 and a take-up roller 24 are rotatably connected to the U-shaped plate 22 from top to bottom. A first motor 25 is fixedly mounted on the U-shaped plate 22. The output end of the first motor 25 is fixedly connected to the take-up roller 24. An elastic cloth 26 is wound between the two take-up rollers 24. A scraper 27 is fixedly mounted on the rear support plate 21.

[0031] The scraper 27 is set at an angle.

[0032] The pressing mechanism includes a hydraulic cylinder 31 fixedly connected to the worktable 9. A fixed plate 32 is fixedly connected to the telescopic end of the hydraulic cylinder 31. A second motor 33 is fixedly connected to the fixed plate 32. A pressing plate 34 is rotatably connected to the fixed plate 32. The output end of the second motor 33 is fixedly connected to the pressing plate 34.

[0033] When using this high-precision horizontal machining center, firstly, the operator places the thin-walled box-shaped workpiece 01 to be processed on the elastic cloth 26, supported by the T-shaped rotary table 10. At this time, the thin-walled box-shaped workpiece 01 will be located between the four clamping plates 14. Next, the feed mechanism 3 is controlled to drive the worktable 9 to move backward to the designated position. Then, the second push rod 18 is controlled to push the connecting plate 19 upward. The connecting plate 19 drives the first ball bearing 20 to rise synchronously and pass through the circular hole of the T-shaped rotary table 10. The first ball bearing 20 pushes against the elastic cloth 26, causing the contact area between the elastic cloth 26 and the first ball bearing 20 to bulge upward locally. This realizes the transformation of the static support of the thin-walled box-shaped workpiece 01 from the T-shaped rotary table 10 to the rolling support of the first ball bearing 20. This structure helps to... Subsequently, the position of the thin-walled box-shaped workpiece 01 is finely adjusted, while significantly reducing the frictional resistance at the bottom of the workpiece 01. Simultaneously, the first push rod 13 is controlled to move the four clamping plates 14 towards the thin-walled box-shaped workpiece 01. During this process, if the thin-walled box-shaped workpiece 01 is not in the centered position and shifts, the arc-shaped pressure plates 16 on the clamping plates 14 will automatically push and adjust it. Specifically, if the thin-walled box-shaped workpiece 01 shifts backward, to the left, or to the right, the rear arc-shaped pressure plate 16 will push it forward; conversely, if the thin-walled box-shaped workpiece 01 shifts forward, to the left, or to the right, the corresponding front arc-shaped pressure plate 16 will push it backward, thereby achieving positional correction of the thin-walled box-shaped workpiece 01 in the plane. It should be noted that... During the position correction of the thin-walled box workpiece 01, the first ball bearing 20 can rotate smoothly with low resistance on the connecting plate 19, allowing the thin-walled box workpiece 01 to adjust its position smoothly and flexibly during correction movement. This effectively avoids jamming or poor correction caused by support friction. The corrected thin-walled box workpiece 01 then contacts the arc surface 16a on the arc-shaped pressure plate 16, as shown in Figure 8. As the clamping plate 14 continues to advance, the arc-shaped pressure plate 16 drives the torsion spring rod 15 to rotate on the clamping plate 14. The torsion spring rod 15 twists, and the inner right-angled surface of the clamping plate 14 gradually contacts the outer corner of the thin-walled box workpiece 01, clamping it. Thus, the clamping plate 14 clamps the outer corner of the thin-walled box workpiece 01. The corner clamping method significantly improves clamping rigidity and force transmission efficiency, effectively avoiding the shortcomings of traditional clamping methods. Existing methods often use hydraulic / pneumatic vises or pressure plates to clamp the planar area of ​​thin-walled box workpiece 01. However, due to the poor rigidity of thin-walled box workpiece 01, if the clamping force is too large, it will cause elastic deformation or even plastic deformation of thin-walled box workpiece 01, which will affect the flatness of thin-walled box workpiece 01 and subsequent machining accuracy. If the clamping force is too small, thin-walled box workpiece 01 is prone to displacement due to cutting forces and other factors. Therefore, by clamping the external corner of thin-walled box workpiece 01, sufficient clamping stability can be provided while dispersing local stress, reducing the risk of workpiece deformation, and improving machining accuracy and reliability.Next, using a top-down view as a reference, the second motor 33 is controlled to rotate the pressing plate 34 clockwise by 90 degrees to directly above the thin-walled box-shaped workpiece 01. Then, the hydraulic cylinder 31 is controlled to move the fixing plate 32 downwards. The second motor 33 and the pressing plate 34 move downwards synchronously with the fixing plate 32, causing the pressing plate 34 to contact the top of the thin-walled box-shaped workpiece 01 and apply a downward pressure. This further enhances the stability of the thin-walled box-shaped workpiece 01 during processing. It should be noted that the pressure applied by the pressing plate 34 to the thin-walled box-shaped workpiece 01 is relatively small, therefore it will not cause deformation of the thin-walled box-shaped workpiece 01. After the thin-walled box-shaped workpiece 01 is fixed, it can be moved and coordinated by the X-axis moving mechanism 4, the Y-axis moving mechanism 5, and the feed mechanism 3. The cutting head 8 processes the thin-walled box-shaped workpiece 01. When one side of the thin-walled box-shaped workpiece 01 is finished and the other side needs to be processed, the hydraulic cylinder 31 is controlled to move the fixed plate 32 upward and reset, causing the pressing plate 34 to disengage from the thin-walled box-shaped workpiece 01. Then, the T-shaped rotary table 10 is controlled to rotate the thin-walled box-shaped workpiece 01 90 degrees. Next, the hydraulic cylinder 31 is controlled to move the fixed plate 32 downward again, causing the pressing plate 34 to continue pressing the thin-walled box-shaped workpiece 01. The above processing steps are repeated until all the surfaces of the thin-walled box-shaped workpiece 01 that need to be processed are completed. After the thin-walled box-shaped workpiece 01 is finished, the feed mechanism 3 is controlled to move the worktable 9 forward. During this process, the hydraulic cylinder 31 is simultaneously controlled to move the fixed plate 32 upward and reset, causing the pressing plate 34 to disengage from the thin-walled box-shaped workpiece 01. The plate 32 moves upward and resets, controlling the second motor 33 to rotate the pressing plate 34 counterclockwise by 90 degrees and reset it. Then, the first push rod 13 is controlled to reset the clamping plate 14, so that the clamping plate 14 no longer clamps the thin-walled box workpiece 01. Subsequently, the second push rod 18 is controlled to move the connecting plate 19 downward and reset it, and the locally protruding elastic cloth 26 returns to a flat state. Then, the worker can remove the processed thin-walled box workpiece 01 from the T-shaped rotary table 10. Next, when it is necessary to clean the elastic cloth 26, the first motors 25 at the rear and front are simultaneously controlled to drive the corresponding winding rollers 24 to wind and unwind the elastic cloth 26, so that the elastic cloth 26 moves backward as a whole. During this process, the inclined scraper 27 continuously scrapes off the processing on the surface of the elastic cloth 26. The scraped debris slides off along the inclined surface of the scraper 27 to avoid accumulation. This cleaning mechanism not only keeps the surface of the elastic cloth 26 clean and prevents debris from affecting the flatness and processing accuracy of the subsequent thin-walled box workpiece 01, but also isolates debris from entering the gap between the first ball bearing 20 and the connecting plate 19, ensuring smooth rotation of the first ball bearing 20. It should be noted that when processing thin-walled box workpieces 01 of different sizes, in order to ensure that the clamping plate 14 can accurately clamp the external corner of the thin-walled box workpiece 01, the position of the L-shaped plate 12 in the adjustment groove 11a can be adjusted circumferentially along the first fixing ring 11 so that the clamping plate 14 is aligned with the external corner of the workpiece. After adjustment, the L-shaped plate 12 is locked in the adjustment groove 11a by the bolt 17 to achieve positioning and fixation.Therefore, when processing the thin-walled cylindrical workpiece 02, the clamping steps for the thin-walled box-shaped workpiece 01 described above can be repeated. During the clamping process of the clamping plate 14 on the thin-walled cylindrical workpiece 02, it should be noted that the arc surface 16a at one end of the arc-shaped pressure plate 16 will first abut against the annular surface of the thin-walled cylindrical workpiece 02, as shown in Figure 9. As the clamping plate 14 continues to advance, the arc-shaped pressure plate 16 will drive the torsion spring rod 15 to rotate on the clamping plate 14. At this time, the torsion spring rod 15 will twist, and then the arc surfaces 16a at both ends of the arc-shaped pressure plate 16 will gradually adhere to the annular surface of the workpiece 02, as shown in Figure 10. Then, the continuing advance of the clamping plate 14 will apply pressure to the arc-shaped pressure plate 16, causing the arc-shaped pressure plate 16 to undergo elastic deformation and gradually adhere to the thin-walled cylindrical workpiece 02. On the annular surface, this deformation significantly increases the contact area between the arc-shaped pressure plate 16 and the thin-walled cylindrical workpiece 02, thereby forming a more uniform and robust clamping effect. This design avoids the problems that might arise if the arc-shaped pressure plate 16 were not deformable: if clamping were only achieved through the small contact area of ​​the arc surfaces 16a at both ends, local pressure concentration would occur, easily causing clamping marks or slight local deformation on the surface of the thin-walled cylindrical workpiece 02, thus affecting its processing accuracy and finished product quality. At the same time, during the deformation and fitting process of the arc-shaped pressure plate 16, the structural design of its arc surfaces 16a at both ends can smoothly contact the workpiece surface, effectively avoiding scratches or abrasions on the annular surface of the thin-walled cylindrical workpiece 02, thereby ensuring the reliability of the appearance and processing of the thin-walled cylindrical workpiece 02. Example 2;

[0034] Based on Embodiment 1, as shown in Figures 11-13, a connecting ring 41 is installed on the spindle seat 7. Multiple vibration sensing heads 42 for monitoring the vibration of the cutter head 8 are fixedly connected to the connecting ring 41. A third push rod 43 is fixedly connected to the spindle seat 7. A connecting frame 44 is fixedly connected to the telescopic end of the third push rod 43. Multiple spring telescopic rods 45 are slidably connected to the connecting frame 44. A second ball bearing 46 is rotatably connected to the telescopic end of the spring telescopic rod 45. A contact block 47 is fixedly connected to the spring telescopic rod 45. An elastic element 51 is provided at the fixed end of the spring telescopic rod 45 and fixed to the connecting frame 44 and the contact block 47. A fourth push rod 48 is fixedly connected to the slide seat 6. A second fixing ring 49 is fixedly connected to the telescopic end of the fourth push rod 48. Multiple wedge blocks 50 acting on the contact block 47 are fixedly connected to the second fixing ring 49.

[0035] The spring telescopic rod 45 and the vibration sensing head 42 are misaligned.

[0036] It should be noted that during the machining process of the cutter head 8 on the workpiece, when the cutter head 8 is not overhanging, in order to avoid the connecting frame 44 and its connected parts affecting the machining of the cutter head 8, the telescopic end of the third push rod 43 can be controlled to retract, causing the connecting frame 44 to move backward. The spring telescopic rod 45, the second ball 46, the contact block 47, and the elastic element 51 move backward synchronously with the connecting frame 44, so that the spring telescopic rod 45 is located between two adjacent vibration sensing heads 42; then, when the cutter head 8 is machining the workpiece... During the overhang machining process, the extension end of the third push rod 43 extends, causing the connecting frame 44 to move forward and reset. Then, the fourth push rod 48 pushes the second fixing ring 49 forward, and the wedge block 50 moves synchronously with the second fixing ring 49. During this process, the wedge block 50 will contact the inclined surface on the contact block 47 and push the contact block 47 towards the cutter head 8. The spring extension rod 45 and the second ball 46 move synchronously with the contact block 47, the elastic element 51 is compressed, and then the second ball 46 will contact the cutter head 8. As the spring telescopic rod 45 continues to move, it is compressed. This compression, through the rotation of the second ball bearing 46 on the spring telescopic rod 45, provides additional dynamic support to the overhanging cutter head 8. This prevents the overhanging cutter head 8 from deforming under the force of the workpiece during machining, and also prevents it from vibrating, which would affect the machining accuracy. Furthermore, the second ball bearing 46 rotates along with the cutter head 8, reducing frictional loss between them. Simultaneously, during the machining process of the overhanging cutter head 8, the vibration sensor head 42 monitors the vibration of the cutter head 8. When the vibration amplitude of the cutter head 8 increases, it continues to control the fourth push rod 48 to push the second fixed ring 49 forward, causing the wedge block 50 to further push the contact block 47 towards the cutter head 8. The spring telescopic rod 45 continues to compress, increasing the supporting force of the second ball bearing 46 on the cutter head 8, thus achieving active vibration suppression.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A high-precision horizontal machining center, comprising a base (1), characterized in that, A frame (2) is provided behind the base (1). A feed mechanism (3) is fixedly connected to the base (1). An X-axis moving mechanism (4) is fixedly connected to the frame (2). A Y-axis moving mechanism (5) is fixedly connected to the X-axis moving mechanism (4). A slide (6) is fixedly connected to the Y-axis moving mechanism (5). A spindle seat (7) is fixedly connected to the slide (6). A cutter head (8) is installed on the spindle seat (7). A worktable (9) is fixedly connected to the feed mechanism (3). A T-shaped rotary table (10) is rotatably connected to the worktable (9). A first fixed ring (11) is fixedly connected to the outer ring surface of the T-shaped rotary table (10). The first fixed ring (11) is provided with multiple L-shaped plates (12), the L-shaped plates (12) are set at an inclination of 45 degrees, the L-shaped plates (12) are fixedly connected to a first push rod (13), the telescopic end of the first push rod (13) is fixedly connected to a clamping plate (14), the cross section of the clamping plate (14) is an isosceles right triangle, and its inner right angle surface is used to clamp the thin-walled box workpiece (01). The clamping plate (14) is rotatably connected to a torsion spring rod (15), and the torsion spring rod (15) is fixedly connected to an arc-shaped pressure plate (16) with elastic deformation capability; the worktable (9) is connected to a pressing mechanism for pressing the workpiece.

2. The high-precision horizontal machining center according to claim 1, characterized in that, The arc-shaped pressure plate (16) has an arc surface (16a).

3. The high-precision horizontal machining center according to claim 1, characterized in that, The first fixing ring (11) has multiple adjustment grooves (11a) along the circumferential direction. The L-shaped plate (12) is passed through the plate by bolts (17) and screwed into the selected adjustment groove (11a) to achieve position fixation.

4. The high-precision horizontal machining center according to claim 1, characterized in that, A second push rod (18) is fixedly connected to the T-shaped rotary table (10). The telescopic end of the second push rod (18) is fixedly connected to a connecting plate (19) located inside the T-shaped rotary table (10). A plurality of first balls (20) arranged in a matrix are rotatably connected to the connecting plate (19).

5. A high-precision horizontal machining center according to claim 4, characterized in that, The first ball (20) can rotate smoothly on the connecting disc (19), and the surface of the first ball (20) is smooth.

6. The high-precision horizontal machining center according to claim 1, characterized in that, Two support plates (21) are fixedly attached to the T-shaped rotary table (10) in a front-to-back arrangement. A U-shaped plate (22) is fixedly attached to the support plate (21). A guide rod (23) and a take-up roller (24) are rotatably connected to the U-shaped plate (22) from top to bottom. A first motor (25) is fixedly attached to the U-shaped plate (22). The output end of the first motor (25) is fixedly connected to the take-up roller (24). An elastic cloth (26) is wound between the two take-up rollers (24). A scraper (27) is fixedly attached to the support plate (21) at the rear.

7. A high-precision horizontal machining center according to claim 6, characterized in that, The scraper (27) is set at an angle.

8. A high-precision horizontal machining center according to claim 1, characterized in that, The pressing mechanism includes a hydraulic cylinder (31) fixedly connected to the worktable (9). A fixed plate (32) is fixedly connected to the telescopic end of the hydraulic cylinder (31). A second motor (33) is fixedly connected to the fixed plate (32). A pressing plate (34) is rotatably connected to the fixed plate (32). The output end of the second motor (33) is fixedly connected to the pressing plate (34).

9. A high-precision horizontal machining center according to claim 1, characterized in that, A connecting ring (41) is installed on the spindle seat (7). Multiple vibration sensing heads (42) for monitoring the vibration of the cutter head (8) are fixedly connected to the connecting ring (41). A third push rod (43) is fixedly connected to the spindle seat (7). A connecting frame (44) is fixedly connected to the telescopic end of the third push rod (43). Multiple spring telescopic rods (45) are slidably connected to the connecting frame (44). A second ball bearing (46) is rotatably connected to the telescopic end of the spring telescopic rod (45). A contact block (47) is fixedly connected to the spring telescopic rod (45). An elastic element (51) is provided at the fixed end of the spring telescopic rod (45) and fixed to the connecting frame (44) and the contact block (47). A fourth push rod (48) is fixedly connected to the slide (6). A second fixing ring (49) is fixedly connected to the telescopic end of the fourth push rod (48). Multiple wedge blocks (50) acting on the contact block (47) are fixedly connected to the second fixing ring (49).

10. A high-precision horizontal machining center according to claim 9, characterized in that, The spring telescopic rod (45) and the vibration sensing head (42) are misaligned.

Images