A roller bit machining device

Abstract

The application discloses a kind of ring drilling processing devices, including machine base, processing cradle, telescopic spindle, rotary table, fixture table, clamping plate and open-close control device, fixture table is coaxially fixed in rotary table, open-close control device drives clamping plate synchronous radial telescoping to realize stable clamping, complete spoke hole, valve hole integrated processing with 3+2 machining center, sliding member uses adjustable combination structure, clamping plate is provided with sector positioning surface and is calibrated coaxial degree by positioning ring, transmission member with cambered surface linkage block guarantees smooth transmission, the device can control spoke hole angle tolerance within ±0.5 °, radial runout is reduced to 0-30 silk, single set processing cycle is shortened from 5.5 minutes to 3.5 minutes, and final product qualified rate is increased to 99.9%, and the device can be directly connected into automatic line to realize "on-line automatic production", adapt to multi-specification ring, and simplify operation maintenance, improve working condition, effectively improve product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of friction ring processing equipment, specifically to a friction ring drilling processing device. Background Technology

[0002] As a means of transportation, motorcycle wheels have core load-bearing components. The machining accuracy of their spoke holes and valve holes directly affects the stability of wheel assembly and driving safety. Machining efficiency, on the other hand, affects the product's market competitiveness. The industry has stringent requirements for the accuracy (angular tolerance, positional accuracy) and efficiency of drilling processes.

[0003] The existing processing method has obvious defects: traditional special machine tool sequential processing requires manual clamping multiple times, which can easily lead to hole misalignment and radial runout of 0-50 microns. The machine adjustment is cumbersome and the single processing cycle is as long as 5.5 minutes. Multiple machines need to be coordinated. The working conditions are dirty and messy, which can also cause problems such as aluminum chips and burrs.

[0004] Patent CN110625160A discloses a drilling device for motorcycle rings. While it improves clamping stability through fixture structure optimization, it still has shortcomings: the unreasonable transmission structure design leads to poor synchronous extension and retraction accuracy of the clamping plates, and the spoke hole angle tolerance can only reach ±1°; the sliding fit structure lacks anti-disengagement and adjustability, the fixture has poor versatility and is prone to workpiece movement, resulting in a final product qualification rate of only 98.8%; secondary machine adjustment is required when processing products with different angles on both sides, and the various devices cannot be directly connected, failing to meet the needs of modern production lines for "automatic production line integration"; it cannot achieve multi-process integrated processing of spoke holes and valve holes; the clamping plate positioning structure is imperfect, with large coaxiality deviation and lack of effective axial limit, making it difficult to control radial runout within an optimal range.

[0005] In summary, the existing devices have problems with clamping accuracy, transmission stability, versatility and processing efficiency that urgently need to be solved. Developing a device for drilling and machining motorcycle rings that overcomes the above defects has important practical significance and application value. Summary of the Invention

[0006] This utility model aims to solve one of the technical problems existing in the prior art.

[0007] This application provides a drilling device for a friction ring, including a base, a machining cradle, a telescopic spindle, and a turntable. It also includes a fixture table, several clamping plates, and an opening and closing control device. The fixture table is coaxially fixed on the turntable, and the several clamping plates are radially movably assembled on the top surface of the fixture table. The opening and closing control device is connected to the telescopic spindle and is used to drive the clamping plates to synchronously extend and retract radially to clamp or loosen the friction ring. The opening and closing control device includes a slide table, several sliding grooves, several sliding parts, and several transmission parts. The slide table is fixedly connected to the telescopic main shaft and is movably inserted through the central hole at the center of the fixture table. Each sliding groove is radially opened at equal angles on the top surface of the fixture table. Each sliding part is slidably assembled in the sliding groove. Each transmission part is connected between the slide table and the sliding part to convert the axial displacement of the slide table into the radial displacement of the sliding part.

[0008] The sliding component includes a linkage slider and a mounting slider. The linkage slider is slidably embedded in the sliding groove, and the mounting slider is slidably assembled on the top surface of the linkage slider through a radially extending mounting groove. The clamping plate is detachably fixed to the top surface of the mounting slider by threaded fasteners. The side of the linkage slider facing the friction ring has an anti-slip pattern, which is a grid or serrated structure.

[0009] The transmission component includes a transmission groove and an L-shaped transmission frame. The transmission groove is located at the bottom of the sliding groove and is connected to the central hole. The middle part of the L-shaped transmission frame is rotatably assembled in the transmission groove via a rotating shaft. One end of the transmission frame is in sliding engagement with the peripheral wall of the slide table, and the other end is in sliding engagement with the bottom surface of the corresponding sliding component. The transmission component also includes several linkage slots and several linkage blocks. Each linkage slot is opened on the peripheral wall of the slide table and the bottom surface of the sliding component, and the extension direction is consistent with the force direction of the transmission frame. Each linkage block is fixedly installed at both ends of the transmission frame to be movably connected with the corresponding linkage slot. The two ends of the linkage block are designed with arc surfaces to ensure that the linkage block remains in close contact with the end wall of the linkage groove during the sliding process. The clamp plate has a fan-shaped structure. Its inner end is fixed to the top surface of the sliding part by threaded fasteners, and its outer end has an arc-shaped positioning surface that matches the contour of the inner ring of the friction ring. A positioning plate is fixed on the back side of the outer end of the clamping plate. The positioning plate is set perpendicular to the top surface of the clamping plate and is used to axially limit the friction ring. The end of the central hole away from the telescopic spindle is detachably fitted with a cover plate via a threaded fastener. It also includes a positioning ring, which is placed coaxially on the top surface of the cover plate when assembling the clamping plates. The positioning ring is used to calibrate the coaxiality of the arc-shaped positioning surfaces at the outer ends of each clamping plate.

[0010] The beneficial effects of this utility model are as follows: 1. Significantly improved precision: The one-time stable clamping combined with the coaxiality calibration structure controls the spoke hole angle tolerance within ±0.5°, reduces radial runout to 0-30 microns, and increases the product qualification rate from 98.8% of the existing technology to 99.9%; the high-speed electric spindle combined with special cutting tools reduces drilling burrs, ensures hole wall smoothness, and meets the requirements of high-precision assembly.

[0011] 2. Significantly improved efficiency: The integrated processing of spoke holes and valve holes reduces the cycle time per set from 5.5 minutes to 3.5 minutes, improving efficiency by over 36%; a single machine replaces the original three dedicated machines, reducing equipment investment; with the continuous processing mechanism, it is suitable for large-scale production and can meet the needs of automated production lines in the future. 3. No secondary machine adjustment is required when processing products with different angles on both sides, and the device can be directly connected to an automatic line to achieve "inline automated production", which greatly improves the continuous operation capability and intelligence level of the production line.

[0012] 4. High versatility: The adjustable clamping plate structure can adapt to different specifications of friction rings, eliminating the need for frequent clamp changes, reducing changeover costs and time, and improving production flexibility; 5. Convenient operation and maintenance: Automated clamping simplifies the operation process, and the angle scale design facilitates precise machine adjustment; the removable cover plate makes cleaning easy, improves processing conditions, and reduces aluminum shavings residue. 6. Stable and durable structure: Anti-slip pattern, optimized transmission structure and vibration reduction design reduce workpiece movement and component wear, extend equipment service life and reduce maintenance costs; Attached Figure Description

[0013] Figure 1 This is a perspective view of a friction ring drilling device according to an embodiment of this application; Figure 2 This is a perspective view of the fixture table in the embodiments of this application; Figure 3 This is a perspective view of the clamping plate and opening / closing control device in the embodiments of this application; Figure 4 This is a perspective view of the slide, sliding member, and transmission member in the embodiments of this application; Figure 5 This is a perspective view of the clamping plate and sliding component in the embodiments of this application; Figure 6 This is a perspective view of the slider in an embodiment of this application.

[0014] Figure Labels 1-Machine base, 2-Machining cradle, 3-Telescopic spindle, 4-Turntable, 5-Clamping table, 6-Clamping plate, 61-Positioning plate, 7-Opening and closing control device, 71-Slide table, 72-Sliding groove, 73-Sliding component, 731-Linkage slider, 732-Mounting slider, 733-Mounting groove, 74-Transmission component, 741-L-shaped transmission frame, 742-Linkage groove, 743-Linkage block, 8-Cover plate, 9-Positioning ring. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] The following description, in conjunction with the accompanying drawings, details a friction ring drilling device provided in this application through specific embodiments and application scenarios.

[0018] Example 1: This application provides a friction ring drilling processing device, including a base 1, a processing cradle 2, a telescopic spindle 3 and a turntable 4, and also includes a clamping table 5, several clamping plates 6 and an opening and closing control device 7. The clamping table 5 is coaxially fixed on the turntable 4, and the several clamping plates 6 are radially movably assembled on the top surface of the clamping table 5. The opening and closing control device 7 is connected to the telescopic spindle 3 and is used to drive each clamping plate 6 to synchronously extend and retract radially to achieve clamping or loosening of the friction ring.

[0019] In this embodiment of the application, the opening and closing control device 7 includes a slide table 71, a plurality of sliding grooves 72, a plurality of sliding members 73, and a plurality of transmission members 74. The slide table 71 is fixedly connected to the telescopic spindle 3 and is movably inserted through the central hole at the center of the fixture table 5. Each sliding groove 72 is radially opened at equal angles on the top surface of the fixture table 5. Each sliding member 73 is slidably assembled in the sliding groove 72 in a corresponding manner. Each transmission member 74 is connected between the slide table 71 and the sliding member 73 in a corresponding manner, and is used to convert the axial displacement of the slide table 71 into the radial displacement of the sliding member 73.

[0020] like Figures 1 to 6As shown, due to the aforementioned structure, when the telescopic spindle 3 drives the slide 71 to move axially along the central hole of the clamping table 5, each transmission component 74 can precisely convert the axial displacement of the slide 71 into the radial displacement of the sliding component 73. At this time, the sliding component 73 slides synchronously along the radially opened sliding grooves 72, driving the clamping plate 6 on the top surface to achieve radial extension and retraction. This linkage structure ensures the motion accuracy and synchronization of each clamping plate 6: the stable axial movement of the slide 71 provides the basis for power transmission, the radially opened sliding grooves 72 limit the movement trajectory of the sliding component 73, and avoid deviation; the transmission component 74, as the force transfer component, effectively eliminates the jamming problem caused by traditional rigid connection or simple sliding fit, making the extension and retraction amplitude of each clamping plate 6 completely consistent.

[0021] Therefore, the motorcycle ring can be clamped stably in one go, eliminating the need for two clamping and machining of the spoke holes as in the original process. On the one hand, this avoids the misalignment of the spoke holes on both sides caused by the asynchronous extension and retraction of the clamping plates 6 during manual clamping. On the other hand, the cooperation between the slide table 71 and the sliding component 73 reduces stress deformation during clamping. Combined with the guiding effect of the sliding groove 72, it significantly reduces the probability of the spoke hole depth and angle exceeding the tolerance due to clamping errors, providing a stable positioning basis for the subsequent one-time machining of the spoke holes by the 3+2 machining center.

[0022] Example 2: In this embodiment, in addition to the structural features of the aforementioned embodiments, the slider 73 includes a linkage slider 731 and a mounting slider 732. The linkage slider 731 is slidably embedded in the sliding groove 72, and the mounting slider 732 is slidably assembled on the top surface of the linkage slider 731 through the radially extending mounting groove 733. The clamping plate 6 is detachably fixed to the top surface of the mounting slider 732 by threaded fasteners.

[0023] In this embodiment of the application, the cross-sections of the sliding groove 72, the linkage slider 731, the mounting groove 733, and the mounting slider 732 are all larger on the inside and smaller on the outside (such as dovetail or T-shaped).

[0024] In this embodiment of the application, the surface of the linkage slider 731 facing the friction ring is provided with anti-slip pattern, which is a grid or serrated structure.

[0025] like Figures 1 to 6As shown, due to the above structure, the mounting slider 732 can slide radially along the mounting groove 733 of the linkage slider 731, which facilitates the adjustment of the clamping plate 6 position according to different specifications of the friction ring, improving the versatility of the fixture; the cross-sectional structure with a larger inner diameter and a smaller outer diameter can prevent the sliding part 73 from disengaging from the sliding groove 72 during movement, ensuring clamping stability; the anti-slip pattern on the surface of the linkage slider 731 can increase the friction with the friction ring, avoid the friction ring from shifting during processing, further ensure the machining accuracy of the spoke holes, and reduce the aluminum chip residue at the contact point between the friction ring and the fixture. With subsequent high-speed machining equipment, it can better improve the surface finish of the drilling and improve the product quality problems caused by the dirty and messy working conditions of the original special machine.

[0026] Example 3: In this embodiment, in addition to the structural features of the aforementioned embodiments, the transmission component 74 includes a transmission groove and an L-shaped transmission frame 741. The transmission groove is opened at the bottom of the sliding groove 72 and is connected to the central hole. The middle part of the L-shaped transmission frame 741 is rotatably assembled in the transmission groove via a rotating shaft. One end of the transmission frame 741 is slidably engaged with the peripheral wall of the slide table 71, and the other end is slidably engaged with the bottom surface of the corresponding sliding component 73.

[0027] In this embodiment of the application, the transmission component 74 further includes a plurality of linkage grooves 742 and a plurality of linkage blocks 743. Each linkage groove 742 is respectively opened on the peripheral wall of the slide table 71 and the bottom surface of the slide component 73 and extends in the same direction as the force direction of the transmission frame 741. Each linkage block 743 is fixedly mounted on both ends of the transmission frame 741 in a corresponding manner for movably connecting with the corresponding linkage groove 742. In this embodiment of the application, the two ends of the linkage block 743 are set as arc surface structures, which are used to ensure that the linkage block 743 and the end wall of the linkage groove 742 always remain in close contact during the sliding process.

[0028] like Figures 1 to 4 As shown, due to the aforementioned structure, when the slide table 71 moves axially along the central hole, the transmission groove provides a stable installation space and motion constraint for the L-shaped transmission frame 741. Its connection to the central hole ensures precise engagement between both ends of the transmission frame 741 and the slide table 71 and the sliding member 73, respectively. The L-shaped transmission frame 741 rotates flexibly within the transmission groove via a central pivot, forming a lever-type transmission structure. When the slide table 71 pushes one end of the transmission frame 741, the other end can efficiently convert the axial force into the radial force required by the sliding member 73 through rotation, achieving precise force direction conversion and avoiding the stress concentration problem of traditional rigid transmission.

[0029] Meanwhile, the linkage groove 742 between the peripheral wall of the slide table 71 and the bottom surface of the sliding member 73 is opened along the force direction of the transmission frame 741, providing a guide trajectory for the linkage blocks 743 at both ends of the transmission frame 741; the movable connection between the linkage block 743 and the linkage groove 742 ensures that the force transmission path is always consistent with the force direction, reducing ineffective friction. The arc surface structure of the linkage block 743 further optimizes the contact effect: during the rotation of the transmission frame 741, the arc surface can adaptively fit the end wall of the linkage groove 742, avoiding gaps or jamming caused by angle changes, and ensuring the synchronous movement of each transmission member 74.

[0030] This structural design makes the power transmission between the slide table 71 and the sliding component 73 smoother, effectively solving the problem of asynchronous extension and retraction of the clamping plate 6 caused by transmission jamming in traditional devices. It not only reduces the angular tolerance of the spoke holes on both sides from ±1° to ±0.5°, but also eliminates the need for repeated manual machine adjustment and calibration. There is no need to adjust parameters after processing on both sides, and the adjustment time for a single set of machines is reduced by more than 40%. It provides a stable transmission foundation for multi-process integrated processing and significantly improves processing efficiency and accuracy stability.

[0031] Example 4: In this embodiment, in addition to the structural features of the aforementioned embodiments, the clamping plate 6 has an overall fan-shaped structure, with its inner end fixed to the top surface of the sliding member 73 by threaded fasteners, and its outer end provided with an arc-shaped positioning surface that matches the contour of the inner ring of the friction ring.

[0032] In this embodiment of the application, a positioning plate 61 is fixedly provided on the back side of the outer end of the clamping plate 6. The positioning plate 61 is arranged perpendicular to the top surface of the clamping plate 6 and is used to axially limit the friction ring. like Figures 5 to 6 As shown, due to the above-mentioned structure, the fan-shaped structure of the clamping plate 6 and the outer arc-shaped positioning surface can closely fit the inner ring contour of the friction ring. Combined with the axial limiting effect of the positioning plate 61, it can ensure the coaxiality and stability of the friction ring during clamping and reduce radial runout during processing. Compared with the radial runout deviation of 0-50 microns of the original drilling machine, this structure can help control the radial runout within the range of 0-30 microns. At the same time, it avoids the valve hole machining position error caused by unstable clamping, laying the foundation for subsequent integration of valve hole process and reduction of processing steps.

[0033] Example 5: In this embodiment, in addition to the structural features of the aforementioned embodiments, a cover plate 8 is detachably installed at the end of the central hole away from the telescopic spindle 3 via a threaded fastener, and a positioning ring 9 is also included. The positioning ring 9 is coaxially placed on the top surface of the cover plate 8 when assembling the clamping plate 6, and is used to calibrate the coaxiality of the arc-shaped positioning surfaces at the outer ends of each clamping plate 6.

[0034] like Figures 1 to 2As shown, due to the above structure, the positioning ring 9 can accurately calibrate the coaxiality of the outer arc positioning surface of each clamping plate 6 when assembling the clamping plate 6, ensuring that the clamping force of each clamping plate 6 on the friction ring is uniform and the position is accurate. This avoids positional deviation during the machining of the spoke holes on both sides from the source, completely solving the problem of misalignment of the spoke holes on both sides affecting the assembly of the hub in the original process. It can achieve one-time machining of the spoke holes more efficiently, improving the overall machining accuracy and efficiency.

[0035] It should be noted that, in this document, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0036] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A drilling device for friction rings, comprising a base, a machining cradle, a telescopic spindle, and a rotary table, characterized in that, It also includes a clamping table, several clamping plates, and an opening and closing control device. The clamping table is coaxially fixed on the turntable, and the several clamping plates are radially movably assembled on the top surface of the clamping table. The opening and closing control device is connected to the telescopic spindle and is used to drive each clamping plate to synchronously extend and retract radially to achieve clamping or loosening of the friction ring.

2. The friction ring drilling device according to claim 1, characterized in that, The opening and closing control device includes a slide table, several sliding grooves, several sliding components, and several transmission components. The slide table is fixedly connected to the telescopic main shaft and movably passes through the center hole of the fixture table. Each sliding groove is radially opened at equal angles on the top surface of the fixture table. Each sliding component is slidably assembled in the sliding groove. Each transmission component is connected between the slide table and the sliding component to convert the axial displacement of the slide table into the radial displacement of the sliding component.

3. The friction ring drilling device according to claim 2, characterized in that, The sliding component includes a linkage slider and a mounting slider. The linkage slider is slidably embedded in a sliding groove, and the mounting slider is slidably assembled on the top surface of the linkage slider through a radially extending mounting groove. The clamping plate is detachably fixed to the top surface of the mounting slider by threaded fasteners.

4. The friction ring drilling device according to claim 3, characterized in that, The surface of the linkage slider facing the friction ring is provided with anti-slip patterns, which are grid-like or sawtooth-like structures.

5. The friction ring drilling device according to claim 2, characterized in that, The transmission component includes a transmission groove and an L-shaped transmission frame. The transmission groove is opened at the bottom of the sliding groove and is connected to the central hole. The middle part of the L-shaped transmission frame is rotatably assembled in the transmission groove via a rotating shaft. One end of the transmission frame is slidably engaged with the peripheral wall of the slide table, and the other end is slidably engaged with the bottom surface of the corresponding sliding component.

6. The friction ring drilling device according to claim 5, characterized in that, The transmission component also includes several linkage slots and several linkage blocks. Each linkage slot is respectively opened on the peripheral wall of the slide table and the bottom surface of the slide component, and the extension direction is consistent with the force direction of the transmission frame. Each linkage block is fixedly installed at both ends of the transmission frame to be movably connected with the corresponding linkage slot.

7. The friction ring drilling device according to claim 6, characterized in that, The two ends of the linkage block are designed with arc surfaces to ensure that the linkage block remains in close contact with the end wall of the linkage groove during the sliding process.

8. The friction ring drilling device according to claim 2, characterized in that, The clamp plate has a fan-shaped structure. Its inner end is fixed to the top surface of the sliding part by threaded fasteners, and its outer end is provided with an arc-shaped positioning surface that matches the contour of the inner ring of the friction ring.

9. The friction ring drilling device according to claim 8, characterized in that, A positioning plate is fixed to the back side of the outer end of the clamping plate. The positioning plate is set perpendicular to the top surface of the clamping plate and is used to axially limit the friction ring.

10. The friction ring drilling device according to claim 2, characterized in that, The end of the central hole away from the telescopic spindle is detachably fitted with a cover plate via a threaded fastener. It also includes a positioning ring, which is placed coaxially on the top surface of the cover plate when assembling the clamping plates. The positioning ring is used to calibrate the coaxiality of the arc-shaped positioning surfaces at the outer ends of each clamping plate.

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