Multi-axis synchronous tapping perpendicularity calibration device
Patent Information
- Application Number
- CN202522235672.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0002]多轴同步攻丝是机械制造、汽车零部件、电子设备等领域的关键加工工序，通过多根攻丝轴同步对工件进行螺纹加工，能大幅提升批量生产效率，同时保证多个螺纹孔的相对位置精度，对产品装配精度与结构稳定性具有重要意义，首先，在汽车零部件生产中，发动机缸体、变速箱壳体等部件需加工大量均匀分布的螺纹孔，多轴同步攻丝可确保各螺纹孔的位置一致性，避免后续装配时出现螺栓无法对齐的问题；其次，在电子设备制造领域，精密壳体的多组螺纹孔需通过同步攻丝保证间距精度，以满足内部元件的安装需求；而在机械结构加工中，多轴同步攻丝能减少工件装夹次数，降低因重复定位产生的误差，提升整体加工精度，总的来说，多轴同步攻丝不仅是提升生产效率的核心手段，更是保障产品装配性能与使用寿命的关键环节，然而，传统的多轴攻丝装置存在明显缺陷，难以满足高精度加工需求：一方面，传统装置的动力传递结构缺乏同步性保障，多采用单轴驱动后通过齿轮或皮带间接带动其他攻丝轴，易因传动间隙导致各攻丝轴转速不一致，出现部分螺纹孔加工深度偏差、螺纹精度不达标的问题；另一方面，传统装置缺乏有效的垂直度校准机制，攻丝轴安装时易因定位基准偏差或长期使用后的部件磨损，导致攻丝轴轴线倾斜，加工出的螺纹孔垂直度超标，进而影响后续装配的贴合度，甚至引发部件应力集中、使用寿命缩短的隐患；此外，传统装置的推进机构多为刚性连接，攻丝进给时无法补偿攻丝轴与工件间的微小偏差，易因压力不均导致攻丝轴振动，不仅加剧刀具磨损，还会造成螺纹表面粗糙度超标，这些问题严重制约了多轴攻丝的加工精度与稳定性，无法满足高端制造领域对螺纹孔质量的严苛要求，所以，本领域技术人员提供了一种多轴同步攻丝垂直度校准装置，以解决上述背景技术中提出的问题
1.使用中，首先，将待攻丝工件平稳放置在底板顶部中部的工件台上，底板底部四个拐角处的防滑脚垫可增大装置与地面的摩擦力，避免后续攻丝作业中装置发生位移，同时通过底板顶部两侧的第一连接架与相邻定位板间的第二连接架，确保定位板及上方部件的安装稳定性，为攻丝轴提供精准的定位基准；
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Figure CN224866492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of calibration device technology, specifically a multi-axis synchronous tapping perpendicularity calibration device. Background Technology
[0002] Multi-axis synchronous tapping is a key machining process in fields such as mechanical manufacturing, automotive parts, and electronic equipment. By simultaneously machining threads on a workpiece using multiple tapping axes, it significantly improves batch production efficiency while ensuring the relative positional accuracy of multiple threaded holes. This is crucial for product assembly accuracy and structural stability. Firstly, in automotive parts production, components such as engine blocks and gearbox housings require machining numerous evenly distributed threaded holes. Multi-axis synchronous tapping ensures the consistency of the position of each threaded hole, preventing bolt misalignment issues during subsequent assembly. Secondly, in electronic equipment manufacturing, multiple sets of threaded holes in precision housings require synchronous tapping to ensure spacing accuracy to meet the installation requirements of internal components. Furthermore, in mechanical structure machining, multi-axis synchronous tapping reduces the number of workpiece clamping operations, minimizes errors caused by repeated positioning, and improves overall machining accuracy. In short, multi-axis synchronous tapping is not only a core means of improving production efficiency but also a key link in ensuring product assembly performance and service life. However, traditional multi-axis tapping devices have significant shortcomings and cannot meet the demands of high-precision machining: on the one hand… Traditional tapping devices often lack synchronization in their power transmission structure, relying on single-axis drive followed by gears or belts to indirectly drive other tapping axes. This can lead to inconsistent speeds among the tapping axes due to transmission backlash, resulting in deviations in thread depth and substandard thread accuracy. Furthermore, traditional devices lack effective perpendicularity calibration mechanisms. During installation, deviations in positioning references or wear from components over time can cause the tapping axis to tilt, resulting in excessive perpendicularity of the machined threads. This affects the fit of subsequent assembly and may even lead to stress concentration and shortened lifespan of components. Additionally, the propulsion mechanisms of traditional devices are often rigid connections, unable to compensate for minor deviations between the tapping axis and the workpiece during tapping feed. Uneven pressure can cause tapping axis vibration, exacerbating tool wear and causing excessive thread surface roughness. These problems severely restrict the machining accuracy and stability of multi-axis tapping, failing to meet the stringent requirements for thread quality in high-end manufacturing. Therefore, those skilled in the art have developed a multi-axis synchronous tapping perpendicularity calibration device to address the problems mentioned in the background. Utility Model Content
[0003] The purpose of this invention is to provide a multi-axis synchronous tapping perpendicularity calibration device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-axis synchronous tapping perpendicularity calibration device includes a base plate, a power structure, and a propulsion structure. A fixing frame is fixedly connected to one side of the base plate, and a power structure is fixedly connected to the top of the fixing frame. The propulsion structure is threadedly connected to the power structure.
[0005] As a further embodiment of this utility model: the power structure includes a motor, a round shaft, a lead screw, a first sprocket, a connecting shaft, a chain, and a second sprocket. The power output shaft of the motor is fixedly connected to the round shaft, and the side of the round shaft away from the motor passes through one side of the fixed frame and is fixedly connected to the lead screw.
[0006] As a further embodiment of this utility model: the round shaft is rotatably connected to the fixed frame, and a connecting shaft is fixedly connected to the bottom of the lead screw, and the connecting shaft is rotatably connected to the base plate.
[0007] As a further embodiment of this utility model: a first sprocket is fixedly connected to the connecting shaft, a chain is meshed on the first sprocket, and three second sprockets are equidistantly meshed on the inner side of the chain.
[0008] As a further embodiment of this utility model: the propulsion structure includes a pressure plate, a spring, a limiting plate, a floating joint and a sliding rod. One side of the pressure plate is threadedly connected to a lead screw on the power structure, and the other side of the pressure plate is slidably connected to a sliding rod, the bottom of which is fixedly connected to the base plate.
[0009] As a further improvement of this utility model: a limiting plate is fixedly connected to the top of the slide rod, and three springs are fixedly connected at equal intervals to the bottom of the pressure plate. Each spring is fixedly connected to a floating joint on the side away from the pressure plate.
[0010] As a further embodiment of this utility model: a workpiece table is fixedly connected to the top center of the base plate, anti-slip pads are fixedly connected to the four corners of the bottom of the base plate, first connecting frames are fixedly connected to both sides of the top of the base plate, three positioning plates are fixedly connected at equal intervals between the two first connecting frames, and a second connecting frame is fixedly connected between two adjacent positioning plates.
[0011] As a further improvement of this utility model: each of the positioning plates is rotatably connected to a mounting base, and each mounting base is fixedly connected to a corresponding second sprocket on the power structure. Each mounting base is connected to a tapping shaft by a key and a cylindrical surface positioning connection. The top of each tapping shaft is sleeved inside the floating joint on the propulsion structure.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In use, first, place the workpiece to be tapped stably on the workpiece table at the top center of the base plate. The anti-slip pads at the four corners of the bottom of the base plate can increase the friction between the device and the ground, preventing the device from shifting during subsequent tapping operations. At the same time, the first connecting frame on both sides of the top of the base plate and the second connecting frame between the adjacent positioning plates ensure the installation stability of the positioning plates and the components above, providing a precise positioning reference for the tapping spindle. 2. Next, start the motor in the power structure. The motor's power output shaft drives the round shaft to rotate. Since the round shaft is rotatably connected to the fixed frame and passes through one side of the fixed frame, the round shaft will synchronously drive the bottom lead screw to rotate. The connecting shaft at the bottom of the lead screw rotates together with the lead screw. The first sprocket fixed on the connecting shaft transmits power to the three second sprockets that are equidistantly meshed on the inner side of the chain through the meshing chain, so that the three second sprockets rotate synchronously. Since each second sprocket is fixed to the mounting seat that is rotatably connected to the top of the positioning plate, the mounting seat will rotate synchronously with the second sprocket. Then, through the key connection and cylindrical surface positioning, it drives the tapping shaft in the mounting seat to rotate, realizing the synchronous power input of multiple tapping shafts, laying the foundation for subsequent synchronous tapping. 3. While transmitting power, the propulsion structure works together to achieve vertical feed and perpendicularity calibration of the tapping spindle. When the lead screw rotates, the pressure plate connected to it by its thread will move downward along the axis of the lead screw. The other side of the pressure plate is slidably connected to the slide rod. The limiting plate at the top of the slide rod can prevent the pressure plate from moving excessively and disengaging from the slide rod. At the same time, the slide rod provides vertical guidance for the movement of the pressure plate, ensuring that the pressure plate always descends smoothly in the vertical direction. The three springs fixed at equal intervals at the bottom of the pressure plate move down synchronously with the pressure plate. The floating joint at the bottom of the spring will be sleeved with the top of the tapping spindle. As the pressure plate continues to move down, the spring will apply a uniform downward thrust to the tapping spindle, pushing the tapping spindle to move towards the workpiece in the vertical direction, completing the tapping feed action. 4. During the tapping process, the device ensures tapping perpendicularity through multiple structures: Firstly, the rotating connection between the mounting base and the positioning plate, combined with cylindrical surface positioning, ensures that the mounting axis of the tapping spindle remains perpendicular, providing an initial reference for tapping perpendicularity. Secondly, the floating joint can compensate for minor coaxiality deviations between the tapping spindle and the pressure plate during the tapping spindle feed, avoiding tapping spindle tilting caused by rigid connection. At the same time, the elastic thrust of the spring ensures uniform pressure when the tapping spindle contacts the workpiece, preventing tapping spindle offset due to uneven pressure, further ensuring the perpendicularity of the threaded hole during tapping. After the tapping operation is completed, the motor is turned off and controlled to reverse. The cylindrical shaft drives the lead screw to rotate in the opposite direction, causing the pressure plate to return to its original position along the slide bar. The spring rebound causes the floating joint to separate from the tapping spindle, and the tapping spindle stops rotating with the mounting base. Finally, the tapped workpiece is removed from the workpiece table, and the next tapping operation can be performed. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a multi-axis synchronous tapping perpendicularity calibration device.
[0014] Figure 2 This is a schematic diagram of a partial structure in a multi-axis synchronous tapping perpendicularity calibration device.
[0015] Figure 3 This is a schematic diagram of the base plate connection structure in a multi-axis synchronous tapping verticality calibration device.
[0016] Figure 4 This is a schematic diagram of the power structure and propulsion structure in a multi-axis synchronous tapping verticality calibration device.
[0017] Figure 5 This is a schematic diagram of the positioning plate connection structure in a multi-axis synchronous tapping verticality calibration device.
[0018] In the diagram: 1. Base plate; 2. Workpiece table; 3. Fixing frame; 4. Anti-slip pad; 5. Power structure; 51. Motor; 52. Round shaft; 53. Lead screw; 54. First sprocket; 55. Connecting shaft; 56. Chain; 57. Second sprocket; 6. Propulsion structure; 61. Pressure plate; 62. Spring; 63. Limiting plate; 64. Floating joint; 65. Slide rod; 7. Tapping shaft; 8. First connecting frame; 9. Mounting base; 10. Positioning plate; 11. Second connecting frame. Detailed Implementation
[0019] 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.
[0020] Example 1 Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This embodiment provides a multi-axis synchronous tapping perpendicularity calibration device, including a base plate 1, a power structure 5, and a propulsion structure 6. A fixing frame 3 is fixedly connected to one side of the base plate 1, and the power structure 5 is fixedly connected to the top of the fixing frame 3. The propulsion structure 6 is threadedly connected to the power structure 5. A workpiece table 2 is fixedly connected to the top center of the base plate 1. Anti-slip pads 4 are fixedly connected to the four corners of the bottom of the base plate 1. First connecting frames 8 are fixedly connected to both sides of the top of the base plate 1. Three positioning plates 10 are fixedly connected at equal intervals between the two first connecting frames 8, and adjacent positioning plates 10 are fixedly connected. The second connecting bracket 11 is connected to the workpiece to be tapped, which is placed stably on the workpiece table 2 at the top center of the base plate 1. The anti-slip pads 4 at the four corners of the bottom of the base plate 1 increase the friction between the device and the ground, preventing the device from shifting during subsequent tapping operations. At the same time, the second connecting bracket 11 between the first connecting bracket 8 on both sides of the top of the base plate 1 and the adjacent positioning plate 10 ensures the installation stability of the positioning plate 10 and the components above it, providing a precise positioning reference for the tapping spindle 7. The top of each positioning plate 10 is rotatably connected to a mounting base 9, and each mounting base 9 has a corresponding second chain on the power structure 5. Wheel 57 is fixedly connected, and tapping spindles 7 are connected to the mounting base 9 via key connections and cylindrical surface positioning. The top of each tapping spindle 7 is sleeved inside the floating joint 64 on the feeding structure 6. During the tapping process, the device ensures tapping perpendicularity through multiple structures: on the one hand, the rotational connection between the mounting base 9 and the positioning plate 10, combined with cylindrical surface positioning, ensures that the mounting axis of the tapping spindle 7 always remains perpendicular, providing an initial reference for tapping perpendicularity; on the other hand, the floating joint 64 can compensate for minor coaxiality deviations between the tapping spindle 7 and the pressure plate 61 during the feeding process of the tapping spindle 7, avoiding the rigid connection leading to The tapping spindle 7 is tilted; at the same time, the elastic thrust of the spring 62 can ensure that the pressure of the tapping spindle 7 is uniform when it contacts the workpiece, preventing the tapping spindle 7 from deviating due to uneven pressure, and further ensuring the perpendicularity of the threaded hole during the tapping process. After the tapping operation is completed, the motor 51 is turned off and the motor 51 is controlled to reverse. The round shaft 52 drives the lead screw 53 to rotate in the opposite direction, so that the pressure plate 61 returns to its original position along the slide bar 65. The spring 62 rebounds and drives the floating joint 64 to separate from the tapping spindle 7. The tapping spindle 7 stops rotating with the mounting base 9. Finally, the workpiece that has been tapped is removed from the workpiece table 2, and the next tapping operation can be carried out.
[0021] Example 2 Reference Figure 1-5This embodiment is based on the previous embodiment, but differs in that the power structure 5 includes a motor 51, a round shaft 52, a lead screw 53, a first sprocket 54, a connecting shaft 55, a chain 56, and a second sprocket 57. The power output shaft of the motor 51 is fixedly connected to the round shaft 52. The side of the round shaft 52 away from the motor 51 passes through one side of the fixed frame 3 and is fixedly connected to the lead screw 53. The round shaft 52 is rotatably connected to the fixed frame 3. The bottom of the lead screw 53 is fixedly connected to the connecting shaft 55, which is rotatably connected to the base plate 1. The first sprocket 54 is fixedly connected to the connecting shaft 55, and the chain 56 is meshed on the first sprocket 54. Three second sprockets are equidistantly meshed on the inner side of the chain 56. The wheel 57 starts the motor 51. The power output shaft of the motor 51 drives the round shaft 52 to rotate. Since the round shaft 52 is rotatably connected to the fixed frame 3 and passes through one side of the fixed frame 3, the round shaft 52 will synchronously drive the bottom lead screw 53 to rotate. The connecting shaft 55 at the bottom of the lead screw 53 rotates together with the lead screw 53. The first sprocket 54 fixed on the connecting shaft 55 transmits power to the three second sprockets 57 that are equidistantly meshed on the inner side of the chain 56 through the meshing chain 56, so that the three second sprockets 57 rotate synchronously. Since each second sprocket 57 is fixed to the mounting seat 9 that is rotatably connected to the top of the positioning plate 10, the mounting seat 9 will rotate synchronously with the second sprocket 57, and then, through the key connection and cylindrical surface positioning, drive the mounting... The tapping spindle 7 inside seat 9 rotates, realizing synchronous power input of multiple tapping spindles 7, laying the foundation for subsequent synchronous tapping; the propulsion structure 6 includes a pressure plate 61, springs 62, a limiting plate 63, a floating joint 64, and a slide rod 65. One side of the pressure plate 61 is threadedly connected to the lead screw 53 on the power structure 5, and the other side of the pressure plate 61 is slidably connected to the slide rod 65. The bottom of the slide rod 65 is fixedly connected to the base plate 1, and the top of the slide rod 65 is fixedly connected to the limiting plate 63. Three springs 62 are fixedly connected at equal intervals at the bottom of the pressure plate 61. The side of each spring 62 away from the pressure plate 61 is fixedly connected to the floating joint 64. While transmitting power, the propulsion structure 6 will cooperate to realize the vertical feed and verticality calibration of the tapping spindle 7. When the lead screw 53 rotates, the pressure plate 61, which is threaded to it, moves downward along the axial direction of the lead screw 53. The other side of the pressure plate 61 is slidably connected to the slide rod 65. The limiting plate 63 at the top of the slide rod 65 can prevent the pressure plate 61 from moving excessively and disengaging from the slide rod 65. At the same time, the slide rod 65 provides vertical guidance for the movement of the pressure plate 61, ensuring that the pressure plate 61 always descends smoothly in the vertical direction. The three springs 62, which are fixed at equal intervals at the bottom of the pressure plate 61, move downward synchronously with the pressure plate 61. The floating joints 64 at the bottom of the springs 62 will be sleeved with the top of the tapping spindle 7. As the pressure plate 61 continues to move downward, the springs 62 will apply a uniform downward pushing force to the tapping spindle 7, pushing the tapping spindle 7 to move towards the workpiece in the vertical direction, thus completing the tapping feed action.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A multi-axis synchronous tapping perpendicularity calibration device, comprising a base plate (1), a power structure (5), and a propulsion structure (6), characterized in that, A fixed frame (3) is fixedly connected to one side of the base plate (1), and a power structure (5) is fixedly connected to the top of the fixed frame (3). A propulsion structure (6) is threaded onto the power structure (5). The power structure (5) includes a motor (51), a round shaft (52), a lead screw (53), a first sprocket (54), a connecting shaft (55), a chain (56), and a second sprocket (57). The power output shaft of the motor (51) is fixedly connected to the round shaft (52). The side of the round shaft (52) away from the motor (51) passes through the side of the fixed frame (3) and is fixedly connected to the lead screw (53). The round shaft (52) is rotatably connected to the fixed frame (3). The bottom of the lead screw (53) is fixedly connected to the connecting shaft (55). The connecting shaft (55) is rotatably connected to the base plate (1). The first sprocket (54) is fixedly connected to the connecting shaft (55). The chain (56) is meshed on the first sprocket (54). Three second sprockets (57) are equidistantly meshed on the inner side of the chain (56). The propulsion structure (6) includes a pressure plate (61), a spring (62), a limiting plate (63), a floating joint (64), and a slide rod (65). One side of the pressure plate (61) is threadedly connected to the lead screw (53) on the power structure (5), and the other side of the pressure plate (61) is slidably connected to the slide rod (65). The bottom of the slide rod (65) is fixedly connected to the base plate (1), and the top of the slide rod (65) is fixedly connected to the limiting plate (63). Three springs (62) are fixedly connected at equal intervals at the bottom of the pressure plate (61), and the side of the springs (62) away from the pressure plate (61) is fixedly connected to the floating joint (64).
2. The multi-axis synchronous tapping perpendicularity calibration device according to claim 1, characterized in that, The bottom plate (1) is fixedly connected to the top center of the workpiece table (2), and anti-slip pads (4) are fixedly connected to the four corners of the bottom of the bottom plate (1). The bottom plate (1) is fixedly connected to the two sides of the top of the bottom plate (1). Three positioning plates (10) are fixedly connected at equal intervals between the two first connecting plates (8), and a second connecting plate (11) is fixedly connected between two adjacent positioning plates (10).
3. The multi-axis synchronous tapping perpendicularity calibration device according to claim 2, characterized in that, The top of each positioning plate (10) is rotatably connected to a mounting base (9), and each mounting base (9) is fixedly connected to a corresponding second sprocket (57) on the power structure (5). Each mounting base (9) is connected to a tapping shaft (7) by a key and a cylindrical surface positioning connection. The top of the tapping shaft (7) is sleeved inside the floating joint (64) on the propulsion structure (6).