Vibration suppression type CNC machining center

Abstract

The utility model relates to the technical field of machining tools, in particular to a vibration suppression type CNC machining center which comprises a supporting panel arranged on a machining tool and a four-jaw chuck arranged on the machining tool, a vertical plate is fixedly installed on a front side plate body of the supporting panel, and an upper air cylinder and a lower air cylinder which are symmetrical to each other are fixedly installed on the vertical plate. End plates are detachably installed at the tail ends of telescopic shafts of the two air cylinders, a fixing lantern ring is fixedly installed between the two end plates, an inner ring is rotationally connected into the fixing lantern ring, a fixing ring is fixedly installed in the center of the inner ring, a workpiece sleeve is detachably installed on the side face of the fixing ring, and the workpiece sleeve is arranged on a workpiece in a sleeving mode and used for restraining vibration. The workpiece sleeve is located right in front of the four-jaw chuck. According to the utility model, the workpiece can be further supported, and the vibration suppression effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and more specifically, to a vibration-suppressing CNC machining center. Background Technology

[0002] Vibration issues generated during CNC machining have always been a key factor restricting further improvement in machining quality.

[0003] During CNC machining center operation, the cutting force between the tool and the workpiece induces high-frequency vibrations. The unbalanced force generated by the high-speed rotation of the spindle and the inertial impact from the rapid movement of the worktable all contribute to complex vibration responses in the machine tool system. These vibrations not only cause chatter marks on the machined surface, reducing surface roughness, but also lead to dimensional deviations, severely affecting the accuracy and consistency of parts. For some slender shafts or thin-walled parts, vibration problems are particularly prominent and may even lead to the scrapping of parts.

[0004] To address vibration issues in CNC machining, existing technologies primarily focus on the following improvements: First, optimizing machine tool structure design to increase rigidity and natural frequency. However, this approach demands high-quality materials and advanced manufacturing processes, significantly increasing costs. Second, employing active or passive vibration control technologies, such as installing vibration sensors and actuators on the machine tool and using feedback control algorithms to suppress vibration. However, this technology is complex, has low reliability, and is only effective under specific operating conditions. Third, improving toolpath planning and cutting parameters to reduce cutting force fluctuations. However, this approach often comes at the cost of reduced machining efficiency.

[0005] Furthermore, in traditional CNC machining centers, the workpiece is typically held at one end by a chuck during machining. This method is particularly problematic when machining slender workpieces, as the overhanging portion is prone to bending vibrations due to cutting forces, severely impacting machining accuracy. While some auxiliary support devices exist on the market, most have fixed structures and cannot be flexibly adjusted according to the workpiece's diameter and length, resulting in poor applicability. Therefore, we propose a vibration-suppressing CNC machining center. Utility Model Content

[0006] The purpose of this invention is to provide a vibration-suppressing CNC machining center to address the deficiencies mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A vibration-suppressing CNC machining center includes a support panel mounted on a machine tool and a four-jaw chuck mounted on the machine tool. A vertical plate is fixedly mounted on the front side plate of the support panel. Two symmetrical cylinders are fixedly mounted on the vertical plate. End plates are detachably mounted at the ends of the telescopic shafts of the two cylinders. A fixing collar is fixedly mounted between the two end plates. An inner ring is rotatably connected inside the fixing collar. A fixing ring is fixedly mounted at the center of the inner ring. A workpiece sleeve is detachably mounted on the side of the fixing ring. The workpiece sleeve is fitted onto the workpiece to suppress vibration. The workpiece sleeve is located directly in front of the four-jaw chuck.

[0009] Preferably, a rectangular plate is fixedly installed at the end of the telescopic shaft of the cylinder, and the end plate is detachably installed on the side of the rectangular plate.

[0010] Preferably, a bearing is fixedly installed on the inner annular side of the fixing collar, and the fixing collar is located at the center of the bearing and fixedly installed on the inner ring of the bearing;

[0011] This feature allows the retaining ring to rotate, which helps reduce friction and reduces the resistance between the ring and the workpiece after it is fitted onto the workpiece, making the workpiece rotate more smoothly.

[0012] Preferably, side protective rings can be detachably installed on both the front and rear sides of the fixing collar, and the side protective rings protect the bearing inside;

[0013] This feature helps prevent debris from getting stuck inside the bearing.

[0014] Preferably, the inner diameter of the side protection ring is larger than the outer diameter of the fixed ring, the inner diameter of the side protection ring is smaller than the inner diameter of the bearing, and the outer diameter of the side protection ring is equal to the outer diameter of the fixed ring.

[0015] Preferably, a limiting ring is fixedly installed on the annular side of the workpiece sleeve, and the limiting ring is detachably installed on the side of the fixed ring by a plurality of fastening bolts;

[0016] This feature facilitates the installation, removal, and replacement of workpiece sleeves, allowing for the selection of matching workpiece sleeves based on workpiece dimensions.

[0017] Preferably, the upper surface of the support panel is provided with two symmetrical guide rods, and guide plates are fixedly installed on both sides of the lower end plate. The guide plates are sleeved on the guide rods and slidably connected to the guide rods.

[0018] This setting allows for guiding the end plate below, making the overall structure more stable.

[0019] Preferably, both ends of the guide rod are fixedly mounted with a fixing seat, the fixing seat is fixedly mounted on the support panel, and the guide plate is provided with a guide hole, through which the guide rod passes.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model achieves auxiliary support and vibration suppression for the workpiece by setting up two symmetrical cylinders, end plates, fixed collars, inner rings, fixed rings, and a detachable workpiece sleeve. The cylinders can flexibly adjust the position of the workpiece sleeve to adapt to workpieces of different lengths. The workpiece sleeve can effectively suppress the bending vibration of the overhanging part during the processing of slender workpieces, thereby improving processing accuracy, reducing the scrap rate of parts caused by vibration, and ensuring the dimensional accuracy and consistency of parts.

[0022] 2. This utility model, by installing a bearing inside the fixed collar, allows the fixed collar to rotate flexibly. Combined with a workpiece sleeve detachably mounted on the side of the fixed collar, this reduces the rotational resistance between the workpiece sleeve and the workpiece. This achieves the effect of suppressing vibration without affecting the normal rotation and processing of the workpiece, ensuring the efficient operation of the CNC machining center and avoiding the impact on processing efficiency due to excessive resistance.

[0023] 3. This utility model achieves stable operation of the overall device structure and protection of key components by setting a sliding fit structure between the guide rod and the guide plate, as well as a side protective ring to protect the bearing. The guide rod guides the end plate, enhancing structural stability; the side protective ring prevents debris from getting stuck in the bearing, ensuring normal bearing operation. This extends the service life of the device, reduces maintenance costs caused by component damage, and improves equipment reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0027] Figure 4 This is the second partial structural schematic diagram of the present utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Support panel; 10. Four-jaw chuck;

[0030] 2. Guide rod; 20. Fixing base;

[0031] 3. Vertical plate; 30. Cylinder; 31. Rectangular plate; 32. End plate; 33. Fixing collar; 34. Bearing; 35. Inner ring; 36. Fixing ring; 37. Side protection ring; 38. Limiting ring; 381. Workpiece sleeve; 39. Guide plate; 391. Guide hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-4 This utility model provides a technical solution: a vibration-suppressing CNC machining center, including a support panel 1 and a four-jaw chuck 10 mounted on the machine tool. The four-jaw chuck 10 is driven by a motor on the machine tool and is used to clamp and fix the workpiece. A vertical plate 3 is fixedly installed on the front side plate of the support panel 1. Two symmetrical cylinders 30 are fixedly installed on the vertical plate 3. End plates 32 are detachably installed at the ends of the telescopic shafts of the two cylinders 30. A fixing collar 33 is fixedly installed between the two end plates 32. An inner ring 35 is rotatably connected inside the fixing collar 33. A fixing ring 36 is fixedly installed at the center of the inner ring 35. A workpiece sleeve 381 is detachably installed on the side of the fixing ring 36. The workpiece sleeve 381 is fitted onto the workpiece to suppress vibration. The workpiece sleeve 381 is located in front of the four-jaw chuck 10. The cylinders 30 can drive the end plates 32 to move through the telescopic shafts, thereby flexibly adjusting the positions of the fixing collar 33 and the workpiece sleeve 381. This structural design can be adapted to workpieces of different lengths, effectively supporting the workpiece, reducing vibration during processing, improving processing accuracy, and achieving vibration suppression.

[0034] like Figure 2 As shown, a rectangular plate 31 is fixedly installed at the end of the telescopic shaft of the cylinder 30. The end plate 32 is detachably installed on the side of the rectangular plate 31 by multiple fastening bolts, making the installation and removal of the end plate 32 more convenient. During equipment maintenance or component replacement, it is convenient to quickly disassemble and assemble the end plate 32 and its connecting parts, reducing maintenance difficulty, shortening equipment downtime, and improving production efficiency.

[0035] like Figure 4As shown, a bearing 34 is fixedly mounted on the inner annular side of the fixing collar 33. The fixing ring 36 is located at the center of the bearing 34 and is fixedly mounted on the inner ring of the bearing 34, allowing the fixing ring 36 to rotate flexibly. When the workpiece sleeve 381 is fitted onto the workpiece, this structure can effectively reduce the rotational resistance between the workpiece sleeve 381 and the workpiece, ensuring that the workpiece can rotate smoothly during processing and avoiding the impact on processing accuracy and efficiency due to excessive resistance.

[0036] like Figure 4 As shown, side protective rings 37 can be detachably installed on both the front and rear sides of the fixing collar 33. The side protective rings 37 protect the bearing 34 internally, effectively preventing debris generated during processing from entering the bearing 34. This avoids problems such as wear and jamming of the bearing 34 caused by debris getting stuck, extends the service life of the bearing 34, and ensures the stability and reliability of the rotation of the fixing ring 36.

[0037] Specifically, the inner diameter of the side protection ring 37 is larger than the outer diameter of the fixed ring 36, the inner diameter of the side protection ring 37 is smaller than the inner diameter of the bearing 34, and the outer diameter of the side protection ring 37 is equal to the outer diameter of the fixed ring 33. This ensures effective protection of the bearing 34 without affecting the normal rotation of the fixed ring 36, and also makes the overall structure more compact and aesthetically pleasing, enhancing the practicality and stability of the device.

[0038] like Figure 3 As shown, a limiting ring 38 is fixedly installed on the annular side of the workpiece sleeve 381. The limiting ring 38 is detachably installed on the side of the fixing ring 36 by multiple fastening bolts, which facilitates the fixing, installation, disassembly, and replacement of the workpiece sleeve 381. Depending on the size of different workpieces, a suitable workpiece sleeve 381 can be quickly replaced, improving the versatility of the device and meeting diverse processing needs.

[0039] It is worth noting that two symmetrical guide rods 2 are provided on the upper surface of the support panel 1, and guide plates 39 are fixedly installed on both sides of the end plate 32 located below. The guide plates 39 are sleeved on the guide rods 2 and slidably connected to the guide rods 2, which plays a precise guiding role in the movement of the end plate 32. During the movement of the end plate 32 driven by the cylinder 30, this structure keeps the end plate 32 running stably, enhances the stability of the overall structure, and ensures that the workpiece sleeve 381 can accurately support the workpiece and suppress vibration.

[0040] It is worth noting that both ends of the guide rod 2 are fixedly mounted with mounting bases 20, which are fixedly mounted on the support panel 1. A guide hole 391 is provided inside the guide plate 39, through which the guide rod 2 passes, further stabilizing the installation of the guide rod 2 and ensuring the reliability of the sliding connection between the guide rod 2 and the guide plate 39. This allows the guide structure to function stably over a long period, improving the stability and reliability of the vibration-damping CNC machining center.

[0041] It is worth noting that since the cylinder 30 is set up vertically and the workpiece sleeve 381 is fitted onto the corresponding position on the workpiece, the position of the workpiece sleeve 381 on the workpiece can be adjusted so that the entire device will not affect the normal processing operation of the machine tool, such as not obstructing the cutting tools during the processing.

[0042] Finally, it should be noted that the cylinder 30, the corresponding control system, and the external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0043] When using the vibration suppression type CNC machining center of this utility model, the workpiece is first clamped and fixed on the four-jaw chuck 10. Then, according to the length of the workpiece, the cylinder 30 on the vertical plate 3 is operated. The telescopic shaft of the cylinder 30 drives the end plate 32. Through the sliding cooperation between the guide rod 2 and the guide plate 39, the position of the fixing collar 33 and the workpiece sleeve 381 is precisely adjusted so that the workpiece sleeve 381 is fitted on the appropriate part of the workpiece.

[0044] If it is necessary to change to a workpiece of a different size, unscrew the fastening bolts, remove the limit ring 38 and the workpiece sleeve 381, select a suitable workpiece sleeve 381 and reinstall it. During the processing, the workpiece rotates with the four-jaw chuck 10. Since the fixed ring 36 is rotatably connected to the fixed sleeve ring 33 through the bearing 34, the resistance between the workpiece sleeve 381 and the workpiece is small and does not affect the rotation of the workpiece. At the same time, the workpiece sleeve 381 is fitted on the workpiece, which can further support and suppress vibration.

[0045] The side protection ring 37 protects the bearing 34 throughout the entire process, preventing debris from entering. After machining is completed, the cylinder 30 retracts, causing the end plate 32 and other components to reset, and the workpiece is removed from the four-jaw chuck 10.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vibration-suppressing CNC machining center, comprising a support panel (1) mounted on a machine tool and a four-jaw chuck (10) mounted on the machine tool, characterized in that: A vertical plate (3) is fixedly installed on the front side plate of the support panel (1). Two symmetrical cylinders (30) are fixedly installed on the vertical plate (3). End plates (32) are detachably installed at the ends of the telescopic shafts of the two cylinders (30). A fixing collar (33) is fixedly installed between the two end plates (32). An inner ring (35) is rotatably connected inside the fixing collar (33). A fixing ring (36) is fixedly installed at the center of the inner ring (35). A workpiece sleeve (381) is detachably installed on the side of the fixing ring (36). The workpiece sleeve (381) is fitted on the workpiece to suppress vibration. The workpiece sleeve (381) is located in front of the four-jaw chuck (10).

2. The vibration-suppressing CNC machining center according to claim 1, characterized in that: A rectangular plate (31) is fixedly installed at the end of the telescopic shaft of the cylinder (30), and the end plate (32) is detachably installed on the side of the rectangular plate (31).

3. The vibration-suppressing CNC machining center according to claim 1, characterized in that: A bearing (34) is fixedly installed on the inner annular side of the fixing collar (33), and the fixing ring (36) is located at the center of the bearing (34) and fixedly installed on the inner ring of the bearing (34).

4. The vibration-suppressing CNC machining center according to claim 3, characterized in that: Side protection rings (37) can be detachably installed on both the front and rear sides of the fixing collar (33), and the side protection rings (37) protect the bearing (34) inside.

5. The vibration-suppressing CNC machining center according to claim 4, characterized in that: The inner diameter of the side protection ring (37) is greater than the outer diameter of the fixed ring (36), the inner diameter of the side protection ring (37) is smaller than the inner diameter of the bearing (34), and the outer diameter of the side protection ring (37) is equal to the outer diameter of the fixed collar (33).

6. The vibration-suppressing CNC machining center according to claim 1, characterized in that: A limiting ring (38) is fixedly installed on the annular side of the workpiece sleeve (381), and the limiting ring (38) is detachably installed on the side of the fixing ring (36) by a plurality of fastening bolts.

7. The vibration-suppressing CNC machining center according to claim 1, characterized in that: The upper surface of the support panel (1) is provided with two symmetrical guide rods (2). Guide plates (39) are fixedly installed on both sides of the end plate (32) located below. The guide plates (39) are sleeved on the guide rods (2) and are slidably connected to the guide rods (2).

8. The vibration-suppressing CNC machining center according to claim 7, characterized in that: Both ends of the guide rod (2) are fixedly installed with a fixing seat (20), the fixing seat (20) is fixedly installed on the support panel (1), the guide plate (39) is provided with a guide hole (391), and the guide rod (2) passes through the guide hole (391).

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