Vibration-damping fixing device for grinding rounded metal rods

Abstract

This utility model relates to the field of machining technology and discloses a vibration-damping and fixing device for external cylindrical grinding of lead screws. It includes a machine tool and a lead screw to be ground. A stabilizing mechanism is provided on the top of the machine tool to stabilize the lead screw. A base plate is fixedly connected to the rear side of the machine tool, and a cooling mechanism is provided on the top of the base plate to cool the lead screw during processing. A mounting base is fixedly connected to the top left side of the machine tool, and a driving mechanism is provided on the left side of the mounting base. The stabilizing mechanism includes a support rod, the bottom of which is fixedly connected to the top of the machine tool, and a support ring is fixedly connected to the top of the support rod. Multiple screws are threaded onto the inner wall of the support ring. In this utility model, the insertion length is adjusted by the multiple screws on the inner wall of the support ring, causing the pressure block to conform to the outer wall of the lead screw to be ground. This allows for clamping force to be applied from multiple angles, improving fixing stability and enhancing vibration damping.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a vibration-damping fixing device for grinding the outer diameter of a lead screw. Background Technology

[0002] As a key component in mechanical transmission, the precision of the outer cylindrical surface of the lead screw affects the transmission efficiency and the stability of equipment operation. During the grinding process, the inherent structural characteristics of the lead screw cause ripples and vibration defects on the grinding surface, which seriously affect the processing quality. Therefore, anti-vibration fixing devices for lead screw outer cylindrical grinding have emerged to provide stable support for the lead screw and reduce vibration interference during the grinding process.

[0003] The function of the anti-vibration fixing device in traditional lead screw external cylindrical grinding is to provide stable and reliable clamping and positioning of the lead screw during the grinding process, thereby reducing the impact of vibration on the machining process at the source. In terms of effect, it improves machining accuracy, increases production efficiency, reduces workpiece scrap rate, and improves the overall production economy and product quality consistency. Traditional processes rely on two-end centers plus a single chuck for positioning, and only fix the workpiece by force at both ends, while the middle section is completely suspended. For lead screws with a large length-to-diameter ratio, the middle section is subjected to radial grinding force during grinding, resulting in bow-shaped bending, causing high-frequency chatter, and periodic vibration marks on the outer cylindrical surface, making it difficult to control the cylindricity accuracy.

[0004] To address this traditional problem, a manual follow post is installed in the middle of the workpiece, moving synchronously with the grinding position to improve the rigidity of the multi-point supported workpiece and further reduce bending chatter. However, the gap between the tool post support block and the workpiece is not adjusted synchronously as the workpiece diameter decreases. Although the workpiece diameter is large and the gap is appropriate at the beginning, the diameter becomes smaller and the gap increases after grinding for a period of time, causing the support block and the workpiece to rub against each other periodically, which ultimately leads to a significant decrease in workpiece stability. Therefore, an anti-vibration fixing device for ball screw external cylindrical grinding is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a vibration-damping fixing device for ball screw external cylindrical grinding, which aims to improve the problem of decreased workpiece stability caused by periodic collisions between the support block and the workpiece in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vibration-damping fixing device for lead screw external cylindrical grinding, comprising a machine tool and a lead screw to be ground, wherein a stabilizing mechanism is provided on the top of the machine tool for stabilizing the lead screw to be ground, a base plate is fixedly connected to the rear side of the machine tool, a cooling mechanism is provided on the top of the base plate for cooling the lead screw to be ground during processing, and a mounting base is fixedly connected to the top left side of the machine tool, wherein a driving mechanism is provided on the left side of the mounting base;

[0007] The stabilizing mechanism includes a support rod, the bottom of which is fixedly connected to the top of the machine tool. A support ring is fixedly connected to the top of the support rod. Multiple screws are threaded onto the inner wall of the support ring. Pressure blocks are fixedly connected to adjacent sides of the multiple screws. Multiple ball bearings are slidably connected to the inner walls of the multiple pressure blocks. A cylinder is rotatably connected to the inner wall of the mounting base. A rotating assembly is provided inside the mounting base. A fixing assembly is provided on the right side of the cylinder. An auxiliary support assembly is provided on the top right side of the machine tool.

[0008] As a further description of the above technical solution:

[0009] The cooling mechanism includes a water storage tank, the bottom of which is fixedly connected to the top of a base plate. A mounting plate is fixedly connected to the rear side of the water storage tank, and a water pump is fixedly connected to the top of the mounting plate. A bracket is fixedly connected to the top of the base plate, and a nozzle is fixedly connected to the front side of the bracket. A water receiving tank is slidably connected to the top of the machine tool. Two water pipes are connected to the outer wall of the water storage tank, and a filter assembly is installed inside the water receiving tank.

[0010] As a further description of the above technical solution:

[0011] The drive mechanism includes a vibration damping pad, the bottom of which is fixedly connected to the top left side of the machine tool, and a servo motor is fixedly connected to the top of the vibration damping pad.

[0012] As a further description of the above technical solution:

[0013] The rotating assembly includes an outer ring, the outer wall of which is fixedly connected to the inner wall of the mounting base, and a roller is slidably connected to the inner wall of the outer ring.

[0014] As a further description of the above technical solution:

[0015] The fixing component includes a claw-shaped shell, the left side of which is connected to the insert, and a shrink ring is threaded onto the outer wall of the claw-shaped shell.

[0016] As a further description of the above technical solution:

[0017] The auxiliary support assembly includes a support base, the bottom of which is fixedly connected to the top left side of the machine tool, and a center is rotatably connected to the inner wall of the support base.

[0018] As a further description of the above technical solution:

[0019] The filter assembly includes a retaining ring, the outer wall of which is fixedly connected to the inner wall of the water receiving tank. A filter box is slidably connected to the inner wall of the water receiving tank, and a sealing ring is fixedly connected to the outer wall of the filter box.

[0020] As a further description of the above technical solution:

[0021] A tool holder is fixedly connected to the top of the machine tool, and a milling cutter is fixedly connected to the rear side of the tool holder.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the insertion length is adjusted by multiple screws on the inner wall of the support ring, which drives the pressure block to fit against the outer wall of the screw to be ground. This allows for the application of clamping force from multiple angles, improving the fixing stability and enhancing the anti-vibration effect. The balls on the inner wall of the pressure block contact the screw to be ground, ensuring both the fixing effect and reducing the friction when the screw rotates, thus reducing energy loss. At the same time, the rotating shrinking ring in the fixing assembly forces the claw-shaped shell to shrink, further tightening the screw to be ground. This allows for the tightening of screws of different diameters.

[0024] 2. In this utility model, the filtered coolant is returned to the water storage tank through two water pipes and a water pump connected to the outer wall of the water storage tank, realizing the recycling of coolant and reducing production costs. The water receiving tank slidably connected to the top of the machine tool effectively receives the sprayed coolant, preventing it from flowing randomly and polluting the working environment. At the same time, the filter box is supported by a retaining ring and slidably connected to the inner wall of the water receiving tank, so that the debris carried in the coolant is filtered out. Attached Figure Description

[0025] Figure 1 This is a perspective view of the anti-vibration fixing device for grinding the outer diameter of a lead screw proposed in this utility model;

[0026] Figure 2 This is a front view of the anti-vibration fixing device for grinding the outer diameter of a lead screw proposed in this utility model;

[0027] Figure 3 This is a partial structural schematic diagram of the anti-vibration fixing device for ball screw external cylindrical grinding proposed in this utility model;

[0028] Figure 4 This is a partial structural cross-sectional view of the anti-vibration fixing device for ball screw external cylindrical grinding proposed in this utility model;

[0029] Figure 5 This is a partial structural exploded view of the anti-vibration fixing device for grinding the outer diameter of the lead screw proposed in this utility model.

[0030] Legend:

[0031] 1. Machine tool; 2. Mounting base; 3. Stabilizing mechanism; 301. Support rod; 302. Support ring; 303. Screw; 304. Pressure block; 305. Ball bearing; 306. Insert sleeve; 307. Rotating assembly; 3071. Outer ring; 3072. Roller; 308. Fixing assembly; 3081. Claw-shaped shell; 3082. Contraction ring; 309. Auxiliary support assembly; 3091. Support base; 3092. Center. 4. Thread rod to be ground; 5. Base plate; 6. Cooling mechanism; 601. Water storage tank; 602. Mounting plate; 603. Water pump; 604. Bracket; 605. Nozzle; 606. Water receiving tank; 607. Water pipe; 608. Filter assembly; 6081. Retaining ring; 6082. Filter box; 6083. Sealing ring; 7. Drive mechanism; 701. Vibration damping pad; 702. Servo motor; 8. Tool holder; 9. Milling cutter. 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] See attached document Figure 1 Appendix Figure 3 and attached Figure 4 An embodiment of this utility model provides a vibration-damping fixing device for lead screw external cylindrical grinding, including a machine tool 1 and a lead screw 4 to be ground. A stabilizing mechanism 3 is provided on the top of the machine tool 1 to stabilize the lead screw 4 to be ground. A base plate 5 is fixedly connected to the rear side of the machine tool 1. A cooling mechanism 6 is provided on the top of the base plate 5 to cool the lead screw 4 to be ground during processing. A mounting base 2 is fixedly connected to the top left side of the machine tool 1. A driving mechanism 7 is provided on the left side of the mounting base 2.

[0034] The stabilizing mechanism 3 includes a support rod 301, which supports the stabilizing mechanism 3. The bottom of the support rod 301 is fixedly connected to the top of the machine tool 1. The top of the support rod 301 is fixedly connected to a support ring 302, which controls the range of motion of the thread rod 4 to be ground. Multiple screws 303 are threadedly connected to the inner wall of the support ring 302. Multiple screws 303 fix multiple thread rods 4 to be ground at multiple angles. Pressure blocks 304 are fixedly connected to adjacent sides of each of the 303. Pressure blocks 304 control the thread rod 4 to be ground to remain stationary and distribute force evenly. Multiple balls 305 are slidably connected to the inner walls of the multiple pressure blocks 304. A tube 306 is rotatably connected to the inner wall of the mounting base 2, allowing the tube 306 to rotate. A rotating component 307 is provided inside the mounting base 2 to reduce the friction generated when the tube 306 rotates. A fixing component 308 is provided on the right side of the tube 306. An auxiliary support component 309 is provided on the top right side of the machine tool 1.

[0035] The fixing component 308 includes a claw-shaped shell 3081. The left side of the claw-shaped shell 3081 is connected to the insert 306. The claw-shaped shell 3081 can rotate with the rotation of the insert 306. A shrink ring 3082 is threadedly connected to the outer wall of the claw-shaped shell 3081. The rotation of the shrink ring 3082 controls the shrinkage of the claw-shaped shell 3081, thereby securing the wire rod 4 to be ground.

[0036] Specifically, the stabilizing mechanism 3 stabilizes the lead screw 4 to be ground. The multiple screws 303 in the stabilizing mechanism 3 rotate according to the thickness of the lead screw 4 to be ground, adjusting the distance between the pressure blocks 304. The internal pressure blocks 304 ensure a uniform contact area and even force distribution. The ball bearings 305 can rotate within the pressure blocks 304 when the lead screw 4 to be ground rotates, keeping the lead screw 4 stable and free from vibration interference while reducing the resistance experienced by the lead screw 4 to be ground. On the other side of the lead screw 4, the fixing component 308 and the claw-shaped shell 3081 select the rotation range according to the thickness of the lead screw 4 to be ground.

[0037] See attached document Figure 1 Appendix Figure 2 and attached Figure 5The cooling mechanism 6 includes a water tank 601, the bottom of which is fixedly connected to the top of the base plate 5. The water tank 601 is used to hold coolant. A mounting plate 602 is fixedly connected to the rear side of the water tank 601. A water pump 603 is fixedly connected to the top of the mounting plate 602 to enable the coolant to be recycled. A bracket 604 is fixedly connected to the top of the base plate 5. A nozzle 605 is fixedly connected to the front side of the bracket 604. The nozzle 605 sprays coolant directly onto the screw 4 to be ground, reducing the high temperature generated by the screw 4 during grinding. A water receiving tank 606 is slidably connected to the top of the machine tool 1. The water receiving tank 606 receives the coolant sprayed from the nozzle 605. Two water pipes 607 are connected to the outer wall of the water tank 601 to provide a path for the coolant to return to the water tank 601. A filter assembly 608 is provided inside the water receiving tank 606 to filter out debris carried away by the coolant.

[0038] The filter assembly 608 includes a retaining ring 6081, the outer wall of which is fixedly connected to the inner wall of the water receiving tank 606. The retaining ring 6081 provides an installation position for the filter box 6082. The filter box 6082 is slidably connected to the inner wall of the water receiving tank 606 to filter out impurities carried away by the coolant when the machine tool 1 is working. A sealing ring 6083 is fixedly connected to the outer wall of the filter box 6082 to fill the gap between the filter box 6082 and the water receiving tank 606 and prevent impurities from entering the bottom of the water receiving tank 606 and being recycled.

[0039] Specifically, the cooling mechanism 6 reduces the large amount of heat generated by the working screw 4. The cooling water in the water storage tank 601 is sprayed out from the nozzle 605 through the water pipe 607, reducing the heat generated by the working screw 4. The cooling water falls into the receiving tank 606, and the impurities carried in between are screened out by the filter box 6082. The receiving tank 606 is connected to the water storage tank 601 by the water pipe 607, and the water is pumped back to the water storage tank 601 by the water pump 603, realizing the recycling of the coolant.

[0040] See attached document Figure 1 Appendix Figure 2 and attached Figure 3The drive mechanism 7 includes a damping pad 701. The bottom of the damping pad 701 is fixedly connected to the top left side of the machine tool 1 to reduce the vibration impact of the servo motor 702 during operation. The top of the damping pad 701 is fixedly connected to the servo motor 702 to drive the screw 4 to be ground to rotate. The rotating assembly 307 includes an outer ring 3071. The outer wall of the outer ring 3071 is fixedly connected to the inner wall of the mounting base 2. The inner wall of the outer ring 3071 is slidably connected to a roller 3072. During the rotation of the insert 306, the roller 3072 reduces the friction of the insert 306. The auxiliary support assembly 309 includes a support base 3091. The bottom of the support base 3091 is fixedly connected to the top left side of the machine tool 1. The inner wall of the support base 3091 is rotatably connected to a tip 3092. The tip 3092 axially fixes the screw 4 to be ground to stabilize it. The top of the machine tool 1 is fixedly connected to a tool holder 8. The rear side of the tool holder 8 is fixedly connected to a milling cutter 9 for grinding the screw 4 to be ground.

[0041] Specifically, in the drive mechanism 7 at the top of the machine tool 1, the damping pad 701 reduces the working vibration of the servo motor 702. The servo motor 702 drives the insert 306 and the fixed component 308 connected thereto to rotate, thereby driving the lead screw 4 to be ground to rotate. The rotating component 307 on the inner wall of the mounting base 2 reduces the rotational friction of the insert 306 through the roller 3072 in the outer ring 3071. The tip 3092 on the support base 3091 axially fixes the lead screw 4 to be ground to ensure its stability. At the same time, the tool post 8 on the machine tool 1 drives the milling cutter 9 to perform external cylindrical grinding on the rotating lead screw 4.

[0042] Working principle: After the machine tool 1 is started, the stabilizing mechanism 3 provides vibration damping and fixation for the screw 4 to be ground, ensuring stability during the grinding process. The bottom of the support rod 301 of the stabilizing mechanism 3 is fixed to the top of the machine tool 1, providing support for the overall structure. The support ring 302 at the top of the support rod 301 is fitted onto the outside of the screw 4 to be ground, limiting its radial range of motion. Multiple screws 303 on the inner wall of the support ring 302 adjust their insertion length through threads. The pressure block 304 on the adjacent side moves with the screw 303 to fit against the outer wall of the screw 4 to be ground, applying clamping force at multiple angles. The balls 305 on the inner wall of the pressure block 304 contact the screw 4 to be ground, ensuring both a fixed effect and reducing the amount of grinding waste. The frictional force when the lead screw 4 rotates is provided by the drive mechanism 7 on the left side of the mounting base 2, which drives the insert 306 and the lead screw 4 to be ground to rotate. The rotating component 307 inside the mounting base 2 reduces the rotational resistance of the insert 306 and ensures smooth rotation. In the fixing component 308 on the right side of the insert 306, the claw-shaped shell 3081 is connected to the insert 306. The rotating shrinking ring 3082 moves along the thread on the outer wall of the claw-shaped shell 3081, forcing the claw-shaped shell 3081 to shrink and further tighten the lead screw 4 to be ground. The auxiliary support component 309 on the top right side of the machine tool 1 supports the lead screw 4 to be ground from the other end, and works with the stabilizing mechanism 3 to achieve positioning at both ends.

[0043] Furthermore, the bottom of the water storage tank 601 is fixed to the top of the base plate 5, and it stores coolant. The mounting plate 602 is fixed to the rear side of the water storage tank 601. The water pump 603 on top of the mounting plate draws the coolant from the water storage tank 601 and delivers it through pipelines to the nozzle 605 on the front side of the bracket 604. The nozzle 605 sprays the coolant directly onto the grinding part of the screw 4 to be ground, quickly reducing the high temperature generated by grinding. The water receiving tank 606, which is slidably connected to the top of the machine tool 1, receives the sprayed coolant to prevent it from flowing freely. The filter assembly 608 inside 606 plays a role: the retaining ring 6081 is fixed to the inner wall of the water receiving tank 606, supporting the filter box 6082. The filter box 6082 is slidably connected to the inner wall of the water receiving tank 606, filtering out debris carried in the coolant. The sealing ring 6083 on the outer wall fills the gaps to prevent impurities from entering the bottom of the water receiving tank 606. The filtered coolant flows back to the water storage tank 601 through two water pipes 607 connected to the outer wall of the water storage tank 601, realizing the recycling of coolant and ensuring the stable operation of the grinding process.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration-proof fixing device for external grinding of a lead screw, comprising a machine tool (1) and a lead screw (4) to be ground, characterized in that: The top of the machine tool (1) is provided with a stabilizing mechanism (3), which is used to stabilize the wire rod (4) to be ground. The rear side of the machine tool (1) is fixedly connected with a base plate (5), and the top of the base plate (5) is provided with a cooling mechanism (6). The cooling mechanism (6) cools down the wire rod (4) to be ground during processing. The top left side of the machine tool (1) is fixedly connected with a mounting base (2), and the left side of the mounting base (2) is provided with a driving mechanism (7). The stabilizing mechanism (3) includes a support rod (301), the bottom of which is fixedly connected to the top of the machine tool (1), and a support ring (302) fixedly connected to the top of the support rod (301). The inner wall of the support ring (302) is threaded with multiple screws (303), and each of the multiple screws (303) is fixedly connected to a pressure block (304) on an adjacent side. The inner wall of each of the multiple pressure blocks (304) is slidably connected with multiple balls (305). The inner wall of the mounting base (2) is rotatably connected with a cylinder (306), and a rotating component (307) is provided inside the mounting base (2). A fixing component (308) is provided on the right side of the cylinder (306), and an auxiliary support component (309) is provided on the top right side of the machine tool (1).

2. The anti-vibration fixing device for the external grinding of a lead screw according to claim 1, characterized in that: The cooling mechanism (6) includes a water storage tank (601), the bottom of which is fixedly connected to the top of the base plate (5). A mounting plate (602) is fixedly connected to the rear side of the water storage tank (601), and a water pump (603) is fixedly connected to the top of the mounting plate (602). A bracket (604) is fixedly connected to the top of the base plate (5), and a nozzle (605) is fixedly connected to the front side of the bracket (604). A water receiving tank (606) is slidably connected to the top of the machine tool (1). Two water pipes (607) are connected to the outer wall of the water storage tank (601), and a filter assembly (608) is provided inside the water receiving tank (606).

3. The anti-vibration fixing device for the external grinding of a lead screw according to claim 1, characterized in that: The drive mechanism (7) includes a shock-absorbing pad (701), the bottom of which is fixedly connected to the top left side of the machine tool (1), and a servo motor (702) is fixedly connected to the top of the shock-absorbing pad (701).

4. The anti-vibration fixing device for the external grinding of a lead screw according to claim 1, characterized in that: The rotating assembly (307) includes an outer ring (3071), the outer wall of which is fixedly connected to the inner wall of the mounting base (2), and a roller (3072) is slidably connected to the inner wall of the outer ring (3071).

5. The anti-vibration fixing device for the external grinding of a lead screw according to claim 1, characterized in that: The fixing component (308) includes a claw-shaped shell (3081), the left side of which is connected to the insert (306), and a shrink ring (3082) is threadedly connected to the outer wall of the claw-shaped shell (3081).

6. The anti-vibration fixing device for the external grinding of a lead screw according to claim 1, characterized in that: The auxiliary support assembly (309) includes a support base (3091), the bottom of which is fixedly connected to the top left side of the machine tool (1), and a tip (3092) is rotatably connected to the inner wall of the support base (3091).

7. The anti-vibration fixing device for the external grinding of a lead screw according to claim 2, characterized in that: The filter assembly (608) includes a retaining ring (6081), the outer wall of which is fixedly connected to the inner wall of the water receiving tank (606), a filter box (6082) is slidably connected to the inner wall of the water receiving tank (606), and a sealing ring (6083) is fixedly connected to the outer wall of the filter box (6082).

8. The anti-vibration fixing device for ball screw external cylindrical grinding according to claim 1, characterized in that: The top of the machine tool (1) is fixedly connected to a tool holder (8), and a milling cutter (9) is fixedly connected to the rear side of the tool holder (8).

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