A vibration-proof tool holder for a numerical control lathe suitable for turning a bridge plug slip base

Abstract

The utility model belongs to numerical control lathe auxiliary equipment technical field especially relates to a numerical control lathe anti -vibration tool rest suitable for bridge plug slip base body turning, including tool rest, the left side of tool rest is equipped with mounting seat, mounting seat is fixed through welding and is installed on slide, slide movable installation is installed on longitudinal mounting plate, longitudinal mounting plate movable installation is installed on horizontal mounting plate. This numerical control lathe anti -vibration tool rest suitable for bridge plug slip base body turning, in anti -vibration mechanism, four -corner spring and the elastic support subassembly of connecting rod composition can preliminarily absorb vibration energy and avoid rigid collision, and central magneto rheological damper can dynamically adjust damping force and attenuate residual vibration, ensure that cutting tool is stable cutting, adjustment mechanism realizes displacement control through two -way screw rod drive, and transmission gap is small, and positioning error is low, satisfies the demand of fine adjustment of complex structure, and the synergistic effect of both, improves the surface finish of processing, reduces the size deviation, guarantees the precision requirement and production efficiency of bridge plug slip base body.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for CNC lathes, specifically to a vibration-damping tool post for CNC lathes suitable for turning bridge plug slip bases. Background Technology

[0002] As a core component of bridge plugs in oil and gas well operations, the machining accuracy of the bridge plug slip base directly affects the anchoring performance and sealing effect of the bridge plug. Bridge plug slip bases are typically made of high-strength alloy steel. During turning, due to the high hardness and cutting resistance of the material, vibration is easily generated. This vibration not only leads to increased surface roughness and decreased dimensional accuracy, but also accelerates tool wear, shortens tool life, and in severe cases, even causes workpiece scrap. Existing CNC lathe tool posts generally suffer from insufficient vibration resistance, especially when machining complex structural components made of high-strength materials like bridge plug slip bases, where the vibration problem is even more pronounced.

[0003] Meanwhile, the existing adjustment mechanisms of CNC lathe tool turrets have significant limitations when machining bridge plug slip bodies: traditional adjustments mostly use unidirectional manual fine-tuning or gear transmission, resulting in large transmission backlash and low positioning accuracy, making it difficult to meet the precise control requirements of tool position for complex slip body surfaces (such as annular grooves, inclined surfaces, and multi-stage steps). Therefore, it is urgent to design a vibration-damping CNC lathe tool turret suitable for turning bridge plug slip bodies to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-damping tool post for CNC lathes suitable for turning bridge plug slip bases, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a CNC lathe anti-vibration tool post suitable for turning bridge plug cladding substrates, comprising a tool post, a mounting base on the left side of the tool post, the mounting base being fixedly mounted on a slide by welding, the slide being movably mounted on a longitudinal mounting plate, the longitudinal mounting plate being movably mounted on a transverse mounting plate, and the transverse mounting plate being fixedly mounted inside the CNC lathe by bolts; the CNC lathe anti-vibration tool post suitable for turning bridge plug cladding substrates includes an anti-vibration mechanism and an adjustment mechanism, the anti-vibration mechanism including the tool post, the tool post having multiple sets of tool clamping bolts around its perimeter for clamping the tool in conjunction with the limiting edge at the bottom of the tool post, the tool post being rotatably mounted on a tool post base, a rotary motor being fixedly mounted on the side of the tool post base, and an assembly for driving the tool post to rotate inside the tool post base, wherein the rotary motor is a Panasonic MINASA6 series MSMF082L1U00, which is an AC servo motor with high responsiveness and high precision control capabilities. Its rated power is 0.75kW, which can meet the rotation requirements of the tool holder and the cutting tool.

[0006] Preferably, the tool holder base has arc-shaped mounting holes at its four corners, and a through hole is provided below the mounting hole. A connecting rod is installed in the mounting hole, with a hemispherical part at its upper end that mates with the mounting hole and a thread at its lower end.

[0007] Preferably, the diameter of the connecting rod is slightly smaller than the diameter of the through hole below the mounting hole. A mounting seat is provided below the tool holder base. Rectangular mounting slots are provided on both sides of the mounting seat. The connecting rod passes through the upper edge of the mounting slot, and a nut is movably installed at its lower end by a thread. Four sets of springs are provided between the tool holder base and the mounting seat, and the springs are respectively sleeved on the connecting rod.

[0008] Preferably, a rotating seat is provided at the lower center of the tool holder base. A connecting rod is provided inside the rotating seat through a rotating shaft. A connector is rotatably installed at the other end of the connecting rod. The connector is fixedly installed at the piston rod end of the magnetorheological damper. The damper is a magnetorheological damper, including a cylinder, piston, piston rod and magnetorheological fluid. A vibration sensor is also provided between the tool holder and the mounting base. The vibration sensor is electrically connected to the control system of the CNC lathe and controls the magnetorheological damper.

[0009] Preferably, the other end of the magnetorheological damper is fixedly installed with a second connector, the second connector is movably installed in the second connecting rod, the other end of the second connecting rod is movably installed in the second rotating seat via a rotating shaft, the second rotating seat is fixedly installed on the mounting base, and the mounting base is fixedly installed on the slide by welding.

[0010] Preferably, the adjusting mechanism includes a slide block, the bottom of which is provided with two sets of sliders, the sliders being movably mounted on a slide rail, the slide rail being mounted on a longitudinal mounting plate, the inner side of the sliders being provided with an adjusting seat, and the two ends of the longitudinal mounting plate being provided with two sets of screw mounting seats, a screw being rotatably mounted between the two sets of screw mounting seats via a bearing, the screw being movably mounted on the adjusting seat via a thread, and the other end of the screw being fixedly mounted on the output shaft of a drive motor.

[0011] Preferably, the bottom of the longitudinal mounting plate is provided with two sets of sliders, which are movably mounted on slide rails. The slide rails are located on the transverse mounting plate, which is provided with two sets of screw mounting seats. Screws are rotatably mounted between the two sets of screw mounting seats via bearings. The other end of the screw is fixedly mounted on the output shaft of the drive motor. The screw is movably mounted in the adjusting seat at the bottom of the longitudinal mounting plate via threads. The two drive motors here are Delta ASDA-A3 series ASD-A3-0421-L, which is a servo motor suitable for high-precision positioning control with a rated power of 0.4kW, providing sufficient power for the longitudinal movement of the slide.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This CNC lathe anti-vibration tool post, suitable for turning bridge plug cladding substrates, integrates a dual mechanism of elastic buffering and damping attenuation. The springs and connecting rods at the four corners of the tool post base form an elastic support assembly. When vibration occurs during turning, the springs can initially absorb the vibration energy through their own deformation. At the same time, the cooperation between the hemispherical end of the connecting rod and the arc-shaped mounting hole can accommodate the slight displacement of the tool post base, avoiding secondary vibration caused by rigid collisions. The magnetorheological damper in the middle can accurately attenuate the remaining vibration. Its piston rod is connected to the tool post base and mounting seat through a connecting rod, and can dynamically adjust the damping force according to the vibration intensity, quickly dissipating the vibration energy, significantly reducing the impact of vibration on the tool post, ensuring that the tool maintains a stable posture during cutting, significantly improving the surface finish of the machined surface, reducing dimensional deviations, and ensuring the accuracy requirements required for the anchoring performance and sealing effect of the bridge plug cladding substrate.

[0014] 2. This CNC lathe anti-vibration tool post, suitable for turning bridge plug cladding substrates, features an adjustment mechanism consisting of a screw, slider, and slide rail. During longitudinal adjustment, drive motor one rotates the screw, causing the slider at the bottom of the slide block to move smoothly along the slide rail on the longitudinal mounting plate via threaded transmission. During transverse adjustment, drive motor two rotates the screw, causing the slider at the bottom of the longitudinal mounting plate to move along the slide rail on the transverse mounting plate. Linear adjustment in both directions is achieved through screw transmission, resulting in small transmission clearance and low positioning error. This allows for precise control of the tool's displacement in both longitudinal and transverse directions, meeting the need for fine tool position adjustment during the turning of complex bridge plug cladding substrate structures. It effectively avoids dimensional deviations caused by adjustment errors, ensuring workpiece accuracy and providing a guarantee for continuous and efficient turning operations, further improving the machining quality and production efficiency of bridge plug cladding substrates. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a partial sectional view of the vibration damping mechanism of this utility model;

[0018] Figure 4 This is a partial installation structure diagram of the vibration damping mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the installation structure of the adjustment mechanism of this utility model.

[0020] In the diagram: 1. Tool holder, 2. Rotary motor, 3. Mounting base, 4. Slide, 5. Longitudinal mounting plate, 6. Transverse mounting plate, 201. Tool clamping bolt, 202. Tool holder base, 203. Mounting hole, 204. Connecting rod, 205. Nut, 206. Spring, 207. Mounting slot, 208. Rotary seat one, 209. Connecting rod one, 210. Connector one, 211. Magnetorheological damper, 212. Connector two, 213. Connecting rod two, 214. Rotary seat two, 301. Slider one, 302. Slide rail one, 303. Adjusting seat, 304. Screw mounting seat one, 305. Drive motor one, 306. Screw one, 307. Slider two, 308. Slide rail two, 309. Screw mounting seat two, 310. Drive motor two, 311. Screw two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] Example 1:

[0023] Based on existing technology, since bridge plug chuck bodies are typically made of high-strength alloy steel, they are prone to vibration during turning due to the material's high hardness and cutting resistance. This vibration not only increases surface roughness and reduces dimensional accuracy but also accelerates tool wear, shortens tool life, and in severe cases, even causes workpiece scrap. Existing CNC lathe tool posts generally suffer from insufficient vibration resistance, especially when machining complex structures made of high-strength materials like bridge plug chuck bodies, where the vibration problem is even more pronounced. Therefore, this device incorporates a vibration damping mechanism to address these issues. Please refer to [link / reference]. Figures 1-4 This utility model provides a technical solution: a CNC lathe anti-vibration tool post suitable for turning bridge plug cladding substrates, including a tool post 1, a mounting seat 3 on the left side of the tool post 1, the mounting seat 3 being fixedly mounted on a slide 4 by welding, the slide 4 being movably mounted on a longitudinal mounting plate 5, and the longitudinal mounting plate 5 being movably mounted on a transverse mounting plate 6; the CNC lathe anti-vibration tool post suitable for turning bridge plug cladding substrates includes an anti-vibration mechanism and an adjustment mechanism, the anti-vibration mechanism including the tool post 1, multiple sets of tool clamping bolts 201 are provided around the tool post 1 to clamp the tool in conjunction with the limiting edge at the bottom of the tool post 1, the tool post 1 is rotatably mounted on a tool post base 202, a rotating motor 2 is fixedly mounted on the side of the tool post base 202, and the tool post base 202 has an assembly for driving the tool post 1 to rotate inside.

[0024] The tool holder base 202 has arc-shaped mounting holes 203 at its four corners. A through hole is provided below the mounting hole 203. A connecting rod 204 is installed in the mounting hole 203. The upper end of the connecting rod 204 is provided with a hemispherical part that mates with the mounting hole 203, and the lower end is provided with a thread.

[0025] The diameter of the connecting rod 204 is slightly smaller than the diameter of the through hole below the mounting hole 203. A mounting seat 3 is provided below the tool holder base 202. Rectangular mounting slots 207 are provided on both sides of the mounting seat 3. The connecting rod 204 passes through the upper edge of the mounting slot 207, and a nut 205 is installed at its lower end by thread. Four sets of springs 206 are provided between the tool holder base 202 and the mounting seat 3. The springs 206 are respectively sleeved on the connecting rod 204.

[0026] A rotating seat 208 is provided in the lower middle part of the tool holder base 202. A connecting rod 209 is provided in the rotating seat 208 through a rotating shaft. A connector 210 is rotatably installed in the other end of the connecting rod 209. The connector 210 is fixedly installed at the piston rod end of the magnetorheological damper 211.

[0027] The other end of the magnetorheological damper 211 is fixedly installed with a connector 212. The connector 212 is movably installed in the connecting rod 213. The other end of the connecting rod 213 is movably installed in the rotating seat 214 via a rotating shaft. The rotating seat 214 is fixedly installed on the mounting seat 3. The mounting seat 3 is fixedly installed on the slide 4 by welding.

[0028] Before processing, the tool on the tool holder 1 is precisely positioned to the processing position of the bridge plug clasp substrate by adjusting the longitudinal and transverse directions of the adjustment mechanism. The tool holder 1 is then rotated by the rotating motor 2 to switch to the required tool type.

[0029] When the turning bridge brake pad base vibrates, the vibration is first transmitted to the tool holder base 202. At this time, the arc-shaped mounting holes 203 at the four corners of the tool holder base 202 and the upper hemisphere of the connecting rod 204 form a flexible fit, allowing the tool holder base 202 to make a small displacement to adapt to the vibration direction and avoid secondary vibration caused by rigid collision. At the same time, the four sets of springs 206 on the connecting rod 204 are compressed or stretched and deformed, absorbing about 60%-70% of the vibration energy through elastic potential energy, realizing the initial attenuation of vibration. The lower end of the connecting rod 204 passes through the rectangular mounting slot 207 of the mounting base 3 and is limited by the nut 205 to ensure that the spring 206 is always within the effective buffer stroke.

[0030] The remaining vibration not absorbed by the spring causes the tool holder base 202 to move further. At this time, the rotating seat 208 below the tool holder base 202 pushes the piston rod of the magnetorheological damper 211 to extend and retract via the connecting rod 209. The magnetorheological fluid inside the magnetorheological damper 211 changes viscosity under the action of the magnetic field, dynamically adjusting the damping force. The greater the vibration intensity, the greater the damping force, quickly consuming the vibration energy; when the vibration weakens, the damping force decreases synchronously to avoid excessive suppression leading to insufficient rigidity of the tool holder. The other end of the magnetorheological damper 211 is connected to the connector 2. 212. Connecting rod 213 is connected to rotating seat 214 on mounting base 3 to form a stable force transmission path, ensuring that the damping effect is efficiently applied to the vibration source. The vibration sensor between tool holder 1 and mounting base 3 collects vibration frequency and amplitude data in real time and transmits it to the CNC lathe control system. The control system adjusts the magnetic field strength of magnetorheological damper 211 according to the feedback data to achieve adaptive optimization of damping force, ensuring that the best anti-vibration effect is maintained under different cutting parameters, especially suitable for the cutting requirements of high-strength materials of bridge plug cladding base.

[0031] Example 2:

[0032] Based on Embodiment 1, traditional adjustments often employ unidirectional manual fine-tuning or gear transmission, which suffers from large transmission gaps and low positioning accuracy. This makes it difficult to meet the precise control requirements of tool position on complex surfaces of the slip base (such as annular grooves, inclined surfaces, and multi-stage steps). Therefore, this device incorporates a high-precision adjustment mechanism to address these issues. Please refer to [link to relevant documentation]. Figures 1-5 This utility model provides a technical solution: a CNC lathe anti-vibration tool post suitable for turning bridge plug cladding substrates. The adjustment mechanism includes a slide 4, with two sets of sliders 301 at the bottom of the slide 4. The sliders 301 are movably mounted on a slide rail 302, which is located on a longitudinal mounting plate 5. An adjustment seat 303 is provided on the inner side of the sliders 301. Two sets of screw mounting seats 304 are provided at both ends of the longitudinal mounting plate 5. A screw 306 is rotatably mounted between the two sets of screw mounting seats 304 via a bearing. The screw 306 is movably mounted on the adjustment seat 303 via a thread. The other end of the screw 306 is fixedly mounted on the output shaft of a drive motor 305.

[0033] The bottom of the longitudinal mounting plate 5 is provided with two sets of sliders 307. The sliders 307 are movably mounted on the slide rails 308. The slide rails 308 are located on the transverse mounting plate 6. The transverse mounting plate 6 is provided with two sets of screw mounting seats 309. A screw 311 is rotatably mounted between the two sets of screw mounting seats 309 through a bearing. The other end of the screw 311 is fixedly mounted on the output shaft of the drive motor 310. The screw 311 is movably mounted in the adjusting seat at the bottom of the longitudinal mounting plate 5 through a thread.

[0034] When the tool needs to be adjusted in the longitudinal direction, drive motor 305 is started. Its output shaft drives screw 306 to rotate between two sets of screw mounting seats 304. Screw 306 engages with the adjusting seat 303 at the bottom of slide 4 through a threaded connection, converting the rotational motion into linear motion. This pushes the two sets of sliders 301 at the bottom of slide 4 to slide smoothly along the slide rail 302 on the longitudinal mounting plate 5. For lateral adjustment, drive motor 310 is started, driving screw 311 to rotate between screw mounting seats 309. Screw 311 engages with the adjusting seat at the bottom of the longitudinal mounting plate 5 through a threaded connection, pushing the two sets of sliders 307 at the bottom of the longitudinal mounting plate 5 to slide along the slide rail 308 on the lateral mounting plate 6, thereby completing the adjustment of the tool position.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates, comprising a tool post (1), characterized in that: The tool holder (1) is provided with a mounting base (3) on the left side. The mounting base (3) is fixedly mounted on the slide (4) by welding. The slide (4) is movably mounted on the longitudinal mounting plate (5). The longitudinal mounting plate (5) is movably mounted on the transverse mounting plate (6). The anti-vibration tool post for CNC lathe suitable for turning bridge plug cladding substrate includes an anti-vibration mechanism and an adjustment mechanism. The anti-vibration mechanism includes a tool post (1). Multiple sets of tool clamping bolts (201) are provided around the tool post (1) to clamp the tool in conjunction with the limiting edge at the bottom of the tool post (1). The tool post (1) is rotatably mounted on the tool post base (202). A rotating motor (2) is fixedly mounted on the side of the tool post base (202). The tool post base (202) has an assembly inside that drives the tool post (1) to rotate.

2. The anti-vibration tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 1, characterized in that: The tool holder base (202) has arc-shaped mounting holes (203) at its four corners. A through hole is provided below the mounting hole (203). A connecting rod (204) is installed in the mounting hole (203). The upper end of the connecting rod (204) is provided with a hemisphere that mates with the mounting hole (203), and the lower end of the connecting rod (204) is provided with a thread.

3. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 2, characterized in that: The diameter of the connecting rod (204) is slightly smaller than the diameter of the through hole below the mounting hole (203). The tool holder base (202) is provided with a mounting seat (3) below it. The mounting seat (3) is provided with rectangular mounting slots (207) on both sides. The connecting rod (204) passes through the upper edge of the mounting slot (207), and a nut (205) is installed at its lower end by thread. Four sets of springs (206) are provided between the tool holder base (202) and the mounting seat (3). The springs (206) are respectively sleeved on the connecting rod (204).

4. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 3, characterized in that: The tool holder base (202) is provided with a rotating seat (208) at the lower center. The rotating seat (208) is provided with a connecting rod (209) connected by a rotating shaft. A connector (210) is rotatably installed at the other end of the connecting rod (209). The connector (210) is fixedly installed at the piston rod end of the magnetorheological damper (211).

5. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 4, characterized in that: The other end of the magnetorheological damper (211) is fixedly installed with a connector two (212), which is movably installed in the connecting rod two (213). The other end of the connecting rod two (213) is movably installed in the rotating seat two (214) through a rotating shaft. The rotating seat two (214) is fixedly installed on the mounting seat (3), and the mounting seat (3) is fixedly installed on the slide seat (4) by welding.

6. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 5, characterized in that: The adjustment mechanism includes a slide block (4), and two sets of sliders (301) are provided at the bottom of the slide block (4). The sliders (301) are movably mounted on the slide rail (302). The slide rail (302) is located on the longitudinal mounting plate (5). An adjustment seat (303) is provided on the inner side of the sliders (301). Two sets of screw mounting seats (304) are provided at both ends of the longitudinal mounting plate (5). A screw (306) is rotatably mounted between the two sets of screw mounting seats (304) through a bearing. The screw (306) is movably mounted on the adjustment seat (303) through a thread. The other end of the screw (306) is fixedly mounted on the output shaft of the drive motor (305).

7. A vibration-damping tool post for CNC lathes suitable for turning bridge plug slip substrates according to claim 6, characterized in that: The bottom of the longitudinal mounting plate (5) is provided with two sets of sliders (307). The sliders (307) are movably mounted on the slide rails (308). The slide rails (308) are located on the transverse mounting plate (6). The transverse mounting plate (6) is provided with two sets of screw mounting seats (309). The screws (311) are rotatably mounted between the two sets of screw mounting seats (309) through bearings. The other end of the screws (311) is fixedly mounted on the output shaft of the drive motor (310). The screws (311) are movably mounted in the adjustment seat at the bottom of the longitudinal mounting plate (5) through threads.

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