Hydraulic skiving and rolling tool adjustment mechanism

Abstract

The utility model discloses a kind of hydraulic scraping and rolling cutter adjusting mechanisms, belong to the adjusting technical field of machining cutter, comprising: workbench, sliding rail, sliding block, fixed plate one, fixed plate two, motor, three-jaw chuck, hydraulic rod and scraping and rolling cutter body, wherein the middle part of workbench is equipped with fixed bracket, fixed bracket top is fixedly connected with support ring, for the auxiliary support of the middle part of clamped workpiece, the inside of fixed plate two is provided with heat preservation structure.The utility model has the beneficial effect that, by setting detachable closed heating heat preservation structure, effectively prevent the viscosity of hydraulic oil under low temperature environment rises, guarantee the response speed and stability of hydraulic rod feed adjustment, while the application of support ring improves the anti-shaking ability when workpiece is processed, guarantee the precision and quality of scraping and rolling operation.

Description

Technical Field

[0001] This utility model relates to the field of scraping and burnishing tool adjustment technology, and in particular to a hydraulic scraping and burnishing tool adjustment mechanism. Background Technology

[0002] In the field of modern mechanical manufacturing, the requirements for the precision machining of the inner surfaces of various cylindrical or ring-shaped workpieces are becoming increasingly stringent, especially the requirements for surface roughness, roundness and dimensional accuracy. As an efficient surface plastic processing method, scraping and burnishing technology is widely used in the inner wall processing of high-precision parts because it can remove part of the material by cutting and scraping, and then achieve surface hardening and refinement by burnishing and extrusion.

[0003] Currently, to achieve precise and stable feed of scraping and burnishing tools, hydraulic systems are used for driving, i.e., hydraulic scraping and burnishing tools. This hydraulic system can provide continuous and adjustable feed force and speed, which is key to ensuring machining quality. However, in actual industrial production, especially when operating in low-temperature workshops in the north or in specific low-temperature environments, the hydraulic system faces core technical problems: a sharp drop in ambient temperature will cause a significant increase in the viscosity of the hydraulic oil. Once the viscosity increases, the flow resistance of the hydraulic oil in the pipeline will increase, which will directly affect the response speed and action accuracy of the hydraulic rod, causing adjustment delays or even jamming in the hydraulic feed system. This greatly affects the continuity and stability of scraping and burnishing operations, ultimately leading to a decline in the machining quality of the workpiece, or even scrapping it. In addition, for some long workpieces, when machining the inner wall, relying solely on the front chuck clamping often cannot provide sufficient support rigidity, and is prone to shaking or vibration under the cutting and compressive stress of the tool. This is another important factor affecting machining accuracy.

[0004] Therefore, this utility model proposes a hydraulic scraping and burnishing tool adjustment mechanism, which aims to solve the problems of slow response of the hydraulic feed system in low temperature environment and insufficient support rigidity for the middle part of long workpieces in the prior art. Utility Model Content

[0005] In view of the problems of sluggish response of hydraulic feed system in low temperature environment and lack of effective auxiliary support for the middle of long workpieces, which easily cause shaking in the existing hydraulic scraping and burnishing tool adjustment mechanism, this utility model aims to provide a hydraulic scraping and burnishing tool adjustment mechanism with improved structure that can effectively solve the above problems.

[0006] This utility model provides a hydraulic scraping and burnishing cutter adjustment mechanism, including: a worktable, a slide rail, a slider, a first fixing plate, a second fixing plate, a motor, a three-jaw chuck, a hydraulic rod, a scraping and burnishing cutter body, a fixing frame, a support ring, a heat preservation ring, a heating tube, a sealing ring, bolts, a fixing ring, and a locking post.

[0007] The fixed plate 2 has a hydraulic rod fixedly connected to its left side, and a scraping and burnishing cutter body is installed on the left side of the hydraulic rod. The hydraulic rod provides stable feed power to the scraping and burnishing cutter body. A fixed frame is installed at the top center of the worktable, and a support ring is fixedly connected to the top of the fixed frame. The support ring is used to provide auxiliary support for the middle of the workpiece.

[0008] Furthermore, a heat-insulating ring is provided inside the left side of the second fixing plate, and multiple heating tubes are fixedly connected inside the heat-insulating ring. A fixing ring is fixedly connected to the middle of the outer wall of the heat-insulating ring, and multiple locking pins are fixedly connected to the right side of the fixing ring. The outer walls of the locking pins are all combined with the left side of the second fixing plate by a snap-fit ​​connection. The sealing ring is located on the left side of the heat-insulating ring, and multiple bolts pass through the sealing ring and are fastened to the left side of the heat-insulating ring by a threaded connection. The sealing ring, the bolts, and the heat-insulating ring together form a closed space for heating and heat-insulating the hydraulic rod, ensuring the normal normal operation performance of the hydraulic rod in a low-temperature environment.

[0009] Preferably, the cooperation between the slide rail and the slider provides precise guidance for the left and right movement of the first fixed plate and the second fixed plate along the length of the worktable, ensuring that the axis of the tool and the workpiece are aligned.

[0010] Preferably, after the workpiece is clamped and fixed by the three-jaw chuck, the support ring penetrates the outer wall of the workpiece, providing solid auxiliary support.

[0011] Preferably, when the hydraulic rod retracts, it drives the scraping and burnishing cutter body to move into the workpiece to achieve feed polishing; when the hydraulic rod extends, it drives the scraping and burnishing cutter body to retract from the workpiece, providing a reliable retraction action.

[0012] Preferably, the fixing ring achieves rapid and detachable initial positioning of the insulation ring through the engagement of the plurality of locking pins with the fixing plate two.

[0013] Preferably, the bolt passes through the left side of the sealing ring, and the right side of the outer wall of the bolt is threaded to the left side of the insulation ring. The sealing ring and the insulation ring are firmly fixed together by the tightening action of the bolt, which effectively enhances the sealing performance of the insulation space.

[0014] Preferably, multiple heating tubes inside the insulation ring are energized to generate heat, continuously heating and insulating the hydraulic rod inside the enclosed space. The purpose is to prevent the viscosity of the hydraulic oil inside the hydraulic rod from increasing in low-temperature environments and to avoid adjustment response delay.

[0015] Preferably, the first fixing plate is fixedly connected by the two sliders on the left side and is mainly used to support the workpiece clamping transmission mechanism, while the second fixing plate is fixedly connected by the two sliders on the right side and is mainly used to support the tool feed adjustment mechanism, thus realizing a clear division of functional modules.

[0016] Preferably, the scraping and tumbling cutter body, driven by the hydraulic rod, contacts the inner wall of the rotating workpiece to achieve scraping, tumbling, and polishing operations on the inside of the workpiece, effectively improving the quality of the inner surface of the workpiece.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art where the viscosity of the hydraulic oil in the hydraulic rod increases due to the decrease in temperature, which leads to a delay in adjustment response, when operating in a low-temperature environment. This is achieved by setting a closed insulation structure consisting of an insulation ring, a heating pipe, a sealing ring, and bolts inside the fixed plate. The heat generated by the heating pipe is used to wrap and heat the hydraulic rod in the closed space. This achieves the effect of ensuring the sensitivity of the hydraulic feed system and ensuring that the scraping and tumbling operation still has continuity and stability in a low-temperature environment. 2. This utility model solves the problem of swaying or radial runout of long workpieces when they are suspended and rotated by a three-jaw chuck and squeezed by a tool. By installing a fixed frame with a support ring in the middle of the worktable, the support ring passes through the outer wall of the workpiece to provide auxiliary support to the middle of the workpiece. This effectively eliminates processing vibration, improves the stability of the workpiece during processing, and thus significantly improves the polishing quality of the inner wall of the workpiece. 3. This utility model solves the problems of cumbersome positioning and difficult disassembly and maintenance of insulation components during installation by setting a fixing ring with a locking post on the outer wall of the insulation ring, and using the locking post and fixing plate for initial positioning, and then using bolts to fasten the sealing ring. This achieves quick and accurate installation and disassembly of the insulation structure, facilitates subsequent maintenance of the hydraulic rod, and ensures the sealing effect of the insulation space. Attached Figure Description

[0018] Figure 1 This is a perspective view of a hydraulic scraping and burnishing tool adjustment mechanism proposed in this utility model; Figure 2 This is a front view of a hydraulic scraping and burnishing tool adjustment mechanism proposed in this utility model; Figure 3 This is a cross-sectional view of the fixed plate two in the hydraulic scraping and burnishing tool adjustment mechanism proposed in this utility model; Figure 4 This is a split view of the hydraulic rod in the hydraulic scraping and burnishing tool adjustment mechanism proposed in this utility model.

[0019] Legend: 1. Worktable; 2. Slide rail; 3. Slider; 4. Fixing plate one; 5. Fixing plate two; 6. Motor; 7. Three-jaw chuck; 8. Fixing frame; 9. Support ring; 10. Insulation ring; 11. Heating tube; 12. Hydraulic rod; 13. Scraping and burnishing cutter body; 14. Sealing ring; 15. Bolt; 16. Fixing ring; 17. Clamping post. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figures 1 to 4 This utility model provides a hydraulic scraping and burnishing tool adjustment mechanism, which aims to solve the problems in the prior art where the hydraulic oil viscosity rises in low-temperature environments, causing a delay in the response of the hydraulic feed system, and where insufficient support in the middle of the workpiece causes swaying when polishing long workpieces.

[0022] like Figure 1 and Figure 2 As shown, a hydraulic scraping and burnishing tool adjustment mechanism includes a worktable 1 and two slide rails 2 fixedly connected to the top of the worktable 1. Slider 3 is slidably connected to the left and right sides of the top of the two slide rails 2. The worktable 1 serves as the mounting base for the entire device, and the cooperation between the slide rails 2 and the sliders 3 provides guidance for the left and right movement of the supported mechanism along the length direction of the worktable 1.

[0023] A fixed frame 8 is also fixedly installed at the top center of the workbench 1. A support ring 9 is fixedly connected to the top of the fixed frame 8. The support ring 9 is used to provide auxiliary support for the middle of the workpiece. After the workpiece is clamped and fixed by the three-jaw chuck 7, the support ring 9 penetrates the outer wall of the workpiece.

[0024] The left and right sliders 3 are connected to the main functional modules respectively: the top of the two left sliders 3 is fixedly connected to the same fixing plate 1 4, and the top of the two right sliders 3 is fixedly connected to the same fixing plate 2 5.

[0025] A motor 6 is fixedly connected to the right side of the fixed plate 4. The output end of the motor 6 passes through the left side of the fixed plate 4 and is fixedly connected to a three-jaw chuck 7. The three-jaw chuck 7 is used to directly clamp the workpiece to be polished, and the motor 6 provides rotational power for the clamped workpiece.

[0026] A hydraulic rod 12 is fixedly connected to the left side of the fixed plate 2 5. A scraping and tumbling cutter body 13 is installed on the left side of the hydraulic rod 12. The hydraulic rod 12 drives the scraping and tumbling cutter body 13 to move into the workpiece by retracting and drives the scraping and tumbling cutter body 13 to exit the workpiece by extending. The hydraulic rod 12 provides stable feed power for the scraping and tumbling cutter body 13 to realize the scraping and tumbling operation on the inner wall of the workpiece.

[0027] To address the impact of low-temperature environments, a core innovative structure is incorporated on the left side interior of the second fixing plate 5: a thermal insulation structure for the hydraulic rod 12. This structure includes a thermal insulation ring 10, heating pipes 11, a fixing ring 16, locking posts 17, a sealing ring 14, and bolts 15. Multiple heating pipes 11 are fixedly connected internally to the thermal insulation ring 10, providing heat for insulation. A fixing ring 16 is fixedly connected to the middle of the outer wall of the thermal insulation ring 10. Multiple locking posts 17 are fixedly connected to the right side of the fixing ring 16. The outer walls of all locking posts 17 engage with the left side of the second fixing plate 5. The initial positioning of the insulation ring 10 is achieved through the coordinated action. The sealing ring 14 is positioned on the left side of the insulation ring 10, and multiple bolts 15 penetrate the left side of the sealing ring 14. The right side of the outer wall of the bolts 15 is threadedly connected to the left side of the insulation ring 10. The sealing ring 14 and the insulation ring 10 are fixed together by the tightening action of the bolts 15, forming a closed space for heating and insulating the hydraulic rod 12. The heating tube 11 generates heat when energized, which heats and insulates the hydraulic rod 12 inside the closed space, preventing the viscosity of the hydraulic oil inside the hydraulic rod 12 from increasing in low-temperature environments, thus ensuring the continuity and stability of the polishing operation.

[0028] Please refer to Figure 3 and Figure 4 The insulation component mainly consists of an insulation ring 10, heating tubes 11, sealing rings 14, bolts 15, fixing rings 16, and locking posts 17. Multiple heating tubes 11 for generating heat are fixedly connected inside the insulation ring 10. A fixing ring 16 is fixedly connected to the middle of the outer wall of the insulation ring 10. Multiple locking posts 17 are fixedly connected to the right side surface of the fixing ring 16. The outer wall of the locking post 17 is engaged with the corresponding position on the left side of the fixing plate 2 5. Through the engagement of the locking post 17 with the fixing plate 2 5, the insulation ring 10 is initially positioned on the fixing plate 2 5.

[0029] Meanwhile, the sealing ring 14 is located on the left side of the insulation ring 10 and aligned with it. Multiple bolts 15 pass through the left side of the sealing ring 14, and the right side of the outer wall of the bolts 15 forms a threaded connection with the left side of the insulation ring 10. The sealing ring 14 and the insulation ring 10 are fixed together by the tightening action of the bolts 15. The sealing ring 14, bolts 15 and insulation ring 10 together form a closed insulation space around the hydraulic rod 12. The closed insulation space encloses the hydraulic rod 12. When the heating tube 11 inside the insulation ring 10 is powered on and generates heat, the heat is locked in the closed space to continuously heat and insulate the hydraulic rod 12, thereby preventing the viscosity of the hydraulic oil in the hydraulic rod 12 from rising in low temperature environments and ensuring the response speed and action accuracy when the hydraulic rod 12 drives the scraping and burnishing cutter body 13 to adjust the feed.

[0030] In addition, to meet the support requirements of the workpiece, the fixed frame 8 is fixedly installed at the top center of the worktable 1. The top of the fixed frame 8 is fixedly connected to the support ring 9. The inner diameter of the support ring 9 is adapted to the outer diameter of the workpiece. When the workpiece is clamped and rotated by the three-jaw chuck 7, the support ring 9 penetrates the outer wall of the workpiece and provides auxiliary support to the middle of the workpiece. This auxiliary support structure effectively eliminates the radial runout and vibration generated by the long workpiece during rotation and extrusion by the tool, ensuring the surface quality of the scraping and burnishing operation.

[0031] As a preferred embodiment, in order to achieve precise positioning and operational stability of the adjustment mechanism, the cooperation between the slide rail 2 and the slider 3 provides guidance for the left and right movement of the fixed plate 4 and the fixed plate 5 along the length of the worktable 1. This guiding method ensures that the motor 6 and the hydraulic rod 12 are always aligned with the axis of the workpiece, which is beneficial to the accuracy of the scraping and burnishing operation.

[0032] As another preferred embodiment, in order to clarify the working stroke and action result of the hydraulic rod 12, when the hydraulic rod 12 retracts, it drives the scraping and tumbling cutter body 13 mounted on the left side to move axially into the workpiece so as to perform polishing operation. When the hydraulic rod 12 extends, it drives the scraping and tumbling cutter body 13 to exit into the workpiece, and the workpiece is unloaded after the polishing operation is completed. This extension and retraction action is completely controlled by the hydraulic system, which provides a stable feed and retraction speed.

[0033] In another preferred embodiment, the fixing ring 16 of the insulation ring 10 is engaged with the fixing plate 5 through multiple locking pins 17, which realizes the detachable preliminary positioning of the insulation ring 10. This positioning method facilitates the quick installation and disassembly of the insulation ring 10 and is beneficial to the subsequent maintenance and repair of the hydraulic rod 12.

[0034] As another preferred embodiment, in order to ensure the sealing and strength of the insulation structure, multiple bolts 15 pass through the left side of the sealing ring 14, and the right side of the outer wall of the bolt 15 forms a threaded connection with the left side of the insulation ring 10. Through the tightening action of the bolts 15, the sealing ring 14 and the insulation ring 10 are firmly fixed together, effectively preventing heat loss and the influence of the external environment on the hydraulic rod 12.

[0035] As another preferred embodiment, in order to achieve an effective heating and heat preservation effect, multiple heating tubes 11 inside the heat preservation ring 10 are energized to generate heat, continuously heating and preserving the hydraulic rod 12 inside the enclosed space, preventing the viscosity of the hydraulic oil inside the hydraulic rod 12 from rising in low-temperature environments, avoiding adjustment response delay, and ensuring the stability and continuity of the hydraulic feed system.

[0036] In another preferred embodiment, to clearly define the objects held by the two fixed plates, fixed plate 1 4 is fixedly connected by two sliders 3 on the left side, mainly used for holding the workpiece and the transmission components, while fixed plate 2 5 is fixedly connected by two sliders 3 on the right side, mainly used for holding the feed and adjustment components of the scraping and burnishing tool.

[0037] In another preferred embodiment, the scraping and tumbling cutter body 13 is driven by the hydraulic rod 12 to contact the inner wall of the rotating workpiece, thereby achieving the polishing operation on the inside of the workpiece. This contact scraping and tumbling process can effectively improve the surface roughness of the inner wall of the workpiece.

[0038] Working principle: First, the workpiece is prepared and positioned. The workpiece to be polished is placed in the clamping range of the three-jaw chuck 7. The three-jaw chuck 7 is closed to achieve the initial clamping and fixation of the workpiece. Then, the support ring 9 at the top of the fixing frame 8 passes through the outer wall of the workpiece. The cooperation between the fixing frame 8 and the support ring 9 provides auxiliary support for the middle part of the workpiece to prevent the workpiece from shaking during the polishing process. The telescopic rod is activated to drive the slider 3 to move the second fixing plate 5 on the right side along the slide rail 2 to the left. The distance between the second fixing plate 5 and the scraping and polishing cutter body 13 and the workpiece is adjusted until the position suitable for polishing is reached and then the movement stops, thus completing the initial position fixation of the workpiece. When operation is required in a low-temperature environment, the insulation structure is activated: the insulation ring 10 is inserted into the corresponding installation position on the left side of the fixing plate 2 5, so that the locking post 17 on the right side of the fixing ring 16 engages with the left side of the fixing plate 2 5, thus achieving the initial fixation of the insulation ring 10. Then, the sealing ring 14 and the insulation ring 10 are fastened together with bolts 15 to form a closed insulation space. The multiple heating tubes 11 inside the insulation ring 10 are energized to generate heat, which heats and insulates the internal hydraulic rod 12, preventing the viscosity of the hydraulic oil in the hydraulic rod 12 from rising in a low-temperature environment, avoiding adjustment response delay, and ensuring the continuity and stability of the hydraulic feed system. When the polishing operation begins, the motor 6 on the fixed plate 4 is started. The output end of the motor 6 drives the three-jaw chuck 7 to rotate, which in turn drives the clamped workpiece to rotate synchronously. At the same time, the hydraulic rod 12 is started. The hydraulic rod 12 retracts and drives the scraping and tumbling cutter body 13 to move axially into the workpiece. The scraping and tumbling cutter body 13 contacts the inner wall of the rotating workpiece and performs scraping and tumbling polishing operation on the inside of the workpiece. After polishing is completed, turn off motor 6 and heating tube 11, and control hydraulic rod 12 to extend and drive the scraping and tumbling cutter body 13 out of the workpiece. Finally, open the three-jaw chuck 7 to remove the polished workpiece.

Claims

1. A hydraulic scraping and burnishing tool adjustment mechanism, comprising: The workbench (1) and two slide rails (2) fixedly connected to the top of the workbench (1), the top of the two slide rails (2) are slidably connected to multiple sliders (3), and the top of the multiple sliders (3) are fixedly connected to a first fixing plate (4) and a second fixing plate (5). A motor (6) is fixedly connected to the right side of the fixed plate (4). The output end of the motor (6) passes through the fixed plate (4) and is fixedly connected to a three-jaw chuck (7). The three-jaw chuck (7) is used to clamp the workpiece. A hydraulic rod (12) is fixedly connected to the inside of the left side of the fixed plate 2 (5). A scraping and tumbling cutter body (13) is installed on the left side of the hydraulic rod (12). The hydraulic rod (12) provides feed power to the scraping and tumbling cutter body (13). Its features are, A fixed frame (8) is installed at the top center of the workbench (1), and a support ring (9) is fixedly connected to the top of the fixed frame (8). The support ring (9) provides auxiliary support for the middle of the workpiece. Furthermore, a heat-insulating ring (10) is provided inside the left side of the second fixing plate (5). Multiple heating tubes (11) are fixedly connected inside the heat-insulating ring (10). A fixing ring (16) is fixedly connected to the middle of the outer wall of the heat-insulating ring (10). Multiple locking pins (17) are fixedly connected to the right side of the fixing ring (16). The outer walls of the multiple locking pins (17) are all engaged with the left side of the second fixing plate (5). A sealing ring (14) is provided on the left side of the heat-insulating ring (10). The sealing ring (14) is located on the left side of the heat-insulating ring (10). The sealing ring (14) is threadedly connected to the left side of the heat-insulating ring (10) by multiple bolts (15). The sealing ring (14), the bolts (15), and the heat-insulating ring (10) together constitute a closed space for heating and heat-insulating the hydraulic rod (12).

2. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The cooperation between the slide rail (2) and the slider (3) provides guidance for the left and right movement of the first fixed plate (4) and the second fixed plate (5) along the length of the worktable (1).

3. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The support ring (9) penetrates the outer wall of the workpiece after the workpiece is clamped and fixed.

4. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The hydraulic rod (12) retracts, causing the scraping and burnishing cutter body (13) to move into the workpiece, and the hydraulic rod (12) extends, causing the scraping and burnishing cutter body (13) to exit into the workpiece.

5. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The fixing ring (16) engages with the fixing plate (5) through the multiple locking pins (17) to achieve the initial positioning of the insulation ring (10).

6. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The bolt (15) passes through the left side of the sealing ring (14), and the right side of the outer wall of the bolt (15) is threadedly connected to the left side of the insulation ring (10). The sealing ring (14) and the insulation ring (10) are fixed together by the fastening action of the bolt (15).

7. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, Multiple heating tubes (11) inside the insulation ring (10) generate heat when energized, which heats and insulates the hydraulic rod (12) inside the enclosed space, preventing the viscosity of the hydraulic oil inside the hydraulic rod (12) from increasing in low-temperature environments.

8. The hydraulic scraping and burnishing tool adjustment mechanism according to claim 1, characterized in that, The first fixing plate (4) is fixedly connected by the two sliders (3) on the left side, and the second fixing plate (5) is fixedly connected by the two sliders (3) on the right side.

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