A rotary table for numerical control machine tool
Patent Information
- Application Number
- CN202522339171.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0006]为了弥补以上不足，本实用新型提供了一种便于安装维修的数控机床用回转台，旨在改善现有技术中存在的安装拆卸繁琐费时、且在断电状态下难以进行安全检修的问题
1、本实用新型，通过设置由传动杆、拉杆及弹簧等构成的安装机构，利用弹簧推动拉杆自动卡合锁定或拉动拉杆解锁的方式，解决了现有技术中回转台安装拆卸通常需要紧固或拆卸多个螺栓，操作繁琐费时，维护效率低下的问题，达到了回转台本体能够被快速安装和便捷拆卸，极大简化了操作流程，显著提升了维修效率的效果。
Smart Images
Figure CN224866790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CNC machine tool accessories technology, and in particular to a rotary table for CNC machine tools that is easy to install and maintain. Background Technology
[0002] The rotary table is one of the core functional components of a multi-axis CNC machine tool. By driving the workpiece to rotate, it can perform machining on different sides of the workpiece. It is widely used in the precision manufacturing of complex parts and is crucial for improving machining efficiency and accuracy.
[0003] Over time, the precision components inside the rotary table, such as bearings and transmission gears, will inevitably wear out or malfunction, requiring regular maintenance, inspection, or even complete replacement. In existing structures, to ensure rigidity and precision during machining, the rotary table body is typically securely fixed to the machine tool's worktable using multiple high-strength bolts.
[0004] However, while this robust bolt-fastening method ensures reliable machining, it also presents inconveniences for maintenance. When the rotary table needs to be completely disassembled for overhaul or replacement, operators must unscrew numerous bolts one by one, a time-consuming and labor-intensive process that increases equipment downtime and reduces production efficiency. Installation also requires repetitive and tedious tightening and calibration. Furthermore, for maintenance items requiring only in-situ inspection, such as checking internal transmission clearances or cleaning chips, maintenance personnel must rotate the rotary table to a specific angle while ensuring safety, i.e., with the equipment powered off. Most existing rotary tables lack an independent and safe manual drive mechanism, making it difficult for maintenance personnel to easily and accurately rotate the rotary table when power is off. This not only increases the difficulty of maintenance but also introduces potential safety risks.
[0005] Therefore, this utility model proposes a rotary table for CNC machine tools that is easy to install and maintain, in order to overcome the shortcomings of the prior art. Utility Model Content
[0006] To overcome the above shortcomings, this utility model provides a rotary table for CNC machine tools that is easy to install and maintain, aiming to improve the problems of cumbersome and time-consuming installation and disassembly, and difficulty in safe maintenance when the power is off.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a rotary table for CNC machine tools that is easy to install and maintain, comprising: a machine tool housing and a rotary table body; It also includes a rotating ring, which is fixedly mounted on the top of the machine tool housing. The top of the rotating ring is provided with an annular groove, and the rotary table body is rotatably connected to the top of the rotating ring by balls rolling in the annular groove. It also includes an installation mechanism, which is used to realize the detachable connection between the rotary table body and the rotating ring. The bottom of the transmission rod of the installation mechanism is fixedly connected to the rotating ring. The rod body of the transmission rod is slidably engaged in the inner groove of the rotary table body. The pull rod of the installation mechanism is slidably disposed in the rotary table body. The spring of the installation mechanism is disposed between the inner wall of the rotary table body and the pull rod, and is used to push the pull rod to engage and lock with the transmission rod. It also includes a rotating mechanism, which is used to manually drive the rotary table body to rotate. The worm wheel of the rotating mechanism is integrally formed or fixedly connected to the outer circumference of the rotating ring. The worm of the rotating mechanism meshes with the worm wheel. The throttle of the rotating mechanism is rotatably connected to the machine tool housing and is connected to the worm through a bevel gear set. Preferably, in the installation mechanism, one end of the pull rod is provided with a locking pin, and the transmission rod is provided with a locking groove that cooperates with the locking pin to achieve the locking engagement; Preferably, in the installation mechanism, the transmission rod has a non-circular cross-section, and the inner groove of the rotary table body is a non-circular groove adapted to the non-circular cross-section, so as to transmit torque during sliding engagement; Preferably, the rotating mechanism further includes a mounting plate, which is fixed to the side wall of the machine tool housing, and the throttle is rotatably connected to the mounting plate and passes through the machine tool housing; Preferably, in the rotating mechanism, the bevel gear set includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly connected to the inner end of the throttle, the second bevel gear is fixedly connected to one end of the worm, and the first bevel gear meshes with the second bevel gear; Preferably, the end of the pull rod away from the transmission rod is provided with a pull ring or handle for pulling the pull rod to release it from the transmission rod during disassembly; Preferably, it also includes a mounting bracket and a motor. The mounting bracket is fixed to one side of the machine tool housing, the motor is mounted on the mounting bracket, and the output shaft of the motor is connected to the rotating ring via a transmission mechanism. Preferably, the side wall of the rotary table body is marked with scale strips.
[0008] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that the installation and disassembly of rotary tables usually requires tightening or loosening multiple bolts, which is cumbersome, time-consuming and inefficient. It solves the problem that the installation and disassembly of rotary tables usually requires tightening or loosening multiple bolts, which is cumbersome and time-consuming. It achieves the effect of quick installation and convenient disassembly of the rotary table body, which greatly simplifies the operation process and significantly improves maintenance efficiency.
[0009] 2. This utility model solves the problem in the prior art that the rotary table is difficult to rotate when the power is off, which is inconvenient for maintenance and poses safety hazards, by adding a rotating mechanism consisting of a throttle, bevel gear set, worm, and worm wheel. It enables the rotary table to be manually rotated to any maintenance angle safely and effortlessly when the equipment is stopped or the power is off. At the same time, the self-locking characteristic of the worm and worm wheel mechanism ensures the stability of positioning, greatly improving the safety and convenience of the maintenance process.
[0010] 3. This utility model solves the problem of ensuring reliable torque transmission while achieving quick assembly and disassembly by designing the transmission rod body as a non-circular cross section and slidingly engaging it with the corresponding non-circular groove on the rotary table body. It achieves a simple structure, reliable connection, smooth axial sliding installation, and effective prevention of relative slippage during rotation, thus ensuring machining accuracy. Attached Figure Description
[0011] Figure 1 This is a perspective view of a rotary table for CNC machine tools that is easy to install and maintain, as proposed in this utility model. Figure 2 An exploded view of the rotating ring of a rotary table for CNC machine tools that is easy to install and maintain, as proposed in this utility model. Figure 3 This is a cross-sectional schematic diagram of the rotating ring of a rotary table for CNC machine tools that is easy to install and maintain, as proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of a spring for a rotary table of a CNC machine tool that is easy to install and maintain, as proposed in this utility model.
[0012] Legend: 1. Machine tool housing; 2. Motor; 3. Mounting bracket; 4. Rotary table body; 5. Scale bar; 6. Mounting mechanism; 601. Tie rod; 602. Transmission rod; 603. Rotating ring; 604. Ball bearing; 605. Spring; 7. Rotating mechanism; 701. Throttle; 702. Mounting plate; 703. Bevel gear set; 704. Worm gear; 705. Worm wheel. Detailed Implementation
[0013] 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.
[0014] Reference Figures 1-5 The present invention provides an embodiment of a rotary table for CNC machine tools that is easy to install and maintain, comprising a machine tool housing 1 and a rotary table body 4 rotatably mounted on the top of the machine tool housing 1. The machine tool housing 1 serves as the mounting base for the entire device, and the rotary table body 4 is used to support the workpiece for rotational processing. In order to construct the basic rotating frame of the rotary table body 4 and realize the functions of quick installation and manual maintenance, the device also includes a rotating ring 603, a mounting mechanism 6, and a rotating mechanism 7. Specifically, the rotating ring 603 is fixedly mounted on the top of the machine tool housing 1 as a base connecting the machine tool housing 1 and the rotary table body 4. The top of the rotating ring 603 is provided with an annular groove, and multiple balls 604 are rolled in the annular groove. The bottom surface of the rotary table body 4 overlaps the top of these balls 604, so that the rotary table body 4 can rotate relative to the fixed rotating ring 603 in a low-friction manner. To enable rapid installation and disassembly of the rotary table body 4, an installation mechanism 6 is provided. This mechanism allows for separable torque transmission and axial locking between the rotary table body 4 and the rotating ring 603. The installation mechanism 6 includes a transmission rod 602, a pull rod 601, and a spring 605. The bottom of the transmission rod 602 is fixedly connected to the rotating ring 603 and extends vertically upward. The shaft of the transmission rod 602 has a non-circular cross-section. The interior of the rotary table body 4 is provided with an internal groove that matches the shaft of the transmission rod 602. This internal groove is non-circular. During installation, the circular groove inside the rotary table body 4 slides downward and engages with the rod of the transmission rod 602. The torque transmission between the rotary table body 4 and the rotating ring 603 is achieved through the cooperation of the non-circular cross section and the non-circular groove. At the same time, the pull rod 601 is slidably disposed inside the rotary table body 4, and the spring 605 is disposed between the inner wall of the rotary table body 4 and the pull rod 601. The elastic force of the spring 605 always pushes the pull rod 601, so that the pull rod 601 and the transmission rod 602 automatically engage and lock. To enable safe maintenance during shutdown or power outage, a rotating mechanism 7 is provided. The worm wheel 705 of the rotating mechanism 7 is integrally formed or fixedly connected to the outer periphery of the rotating ring 603. The worm 704 meshes with the worm wheel 705. The throttle 701 is rotatably connected to the machine tool housing 1. The rotation of the throttle 701 is transmitted to the worm 704 through the bevel gear set 703, thereby driving the worm 704 to rotate, which in turn drives the worm wheel 705, the rotating ring 603 fixed thereto, and the rotary table body 4 to rotate slowly together. One end of the pull rod 601 in the mounting mechanism 6 is provided with a locking pin, and the transmission rod 602 is provided with a corresponding locking groove that cooperates with the locking pin. When the rotary table body 4 is installed in place, the spring 605 pushes the pull rod 601, so that the locking pin of the pull rod 601 automatically engages in the locking groove of the transmission rod 602, thereby completing the axial positioning of the rotary table body 4. To facilitate disassembly, the end of the pull rod 601 away from the transmission rod 602 is provided with a pull ring or handle. When the operator pulls the pull ring or handle outward, the pull rod 601 can overcome the elastic force of the spring 605, so that the locking pin is disengaged from the locking groove and the lock is released. In order to effectively transmit torque when manually or by motor drive, the rod body of the transmission rod 602 in the mounting mechanism 6 is a non-circular cross section, and the groove inside the rotary table body 4 is also correspondingly machined into a non-circular groove that matches the non-circular cross section shape of the transmission rod 602. This sliding engagement structure ensures that the rotation of the rotating ring 603 can be transmitted to the rotary table body 4 without slippage. The rotating mechanism 7 also includes a mounting plate 702, which is fixed to the side wall of the machine tool housing 1. The throttle 701 is rotatably connected to the mounting plate 702, and the rod of the throttle 701 extends through the mounting plate 702 and the side wall of the machine tool housing 1 into the interior of the machine tool housing 1. The bevel gear set 703 includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to the inner end of the throttle 701 that extends into the machine tool housing 1, and the second bevel gear is fixedly connected to one end of the worm gear 704. The first bevel gear and the second bevel gear mesh with each other, thereby changing the horizontal rotation of the throttle 701 into the vertical rotation of the worm gear 704, ensuring smooth execution of manual operation. It also includes a mounting bracket 3 and a motor 2. The mounting bracket 3 is fixed to one side of the machine tool housing 1, and the motor 2 is mounted on the mounting bracket 3. The output shaft of the motor 2 is connected to the rotating ring 603 through a transmission mechanism. In order to facilitate observation and precise positioning of the rotation angle of the rotary table body 4 during manual maintenance, a scale bar 5 is marked on the side wall of the rotary table body 4, and a fixed indicator mark is provided on the machine tool housing 1 at the position corresponding to the scale bar 5. The scale bar 5 rotates with the rotary table body 4 and cooperates with the stationary fixed indicator mark to indicate the angle.
[0015] Working principle: When installing the rotary table body 4, the operator aligns the inner groove of the rotary table body 4 with the rod body of the transmission rod 602 fixed on the rotating ring 603 and slides it downward. After the rotary table body 4 is fully in place, the internal spring 605 pushes the pull rod 601 to move, so that the locking pin of the pull rod 601 automatically engages in the locking groove of the transmission rod 602, completing the quick installation and locking of the rotary table body 4. At this time, the rotary table body 4 realizes the torque transmission connection with the rotating ring 603 through the cooperation of the non-circular cross section of the transmission rod 602 and the inner groove. When disassembling the rotary table body 4, the operator pulls the pull ring or handle of the pull rod 601 outward. The pull rod 601 moves against the elastic force of the spring 605, causing the locking pin of the pull rod 601 to disengage from the locking groove of the transmission rod 602, thus releasing the locking state. Then the operator can directly lift the rotary table body 4 vertically upward to achieve rapid separation of the rotary table body 4 from the rotating ring 603. When the rotary table body 4 needs to be rotated for maintenance while the equipment is stopped or powered off, the maintenance personnel rotate the throttle 701 located outside the machine tool housing 1. The rotation of the throttle 701 changes the transmission direction through the bevel gear set 703 and drives the worm 704 to rotate. The rotation of the worm 704 drives the meshing worm wheel 705 to rotate slowly. Since the worm wheel 705 is fixedly connected to the rotating ring 603, the rotating ring 603 rotates accordingly and transmits torque to the rotary table body 4 through the transmission rod 602, causing the rotary table body 4 to rotate smoothly. The maintenance personnel can use the scale strip 5 on the side wall of the rotary table body 4 for precise positioning. The entire process does not require the equipment to be powered on, and the worm and worm wheel mechanism has a reverse self-locking characteristic, ensuring the safety of the maintenance process.
Claims
1. A rotary table for CNC machine tools that is easy to install and maintain, comprising a machine tool housing (1) and a rotary table body (4). Its features are, Also includes: Rotating ring (603), the rotating ring (603) is fixedly installed on the top of the machine tool housing (1), the top of the rotating ring (603) is provided with an annular groove, and the rotary table body (4) is rotatably connected to the top of the rotating ring (603) by the ball (604) rolling in the annular groove; The mounting mechanism (6) is used to realize the detachable connection between the rotary table body (4) and the rotating ring (603). The bottom of the transmission rod (602) of the mounting mechanism (6) is fixedly connected to the rotating ring (603). The rod body of the transmission rod (602) is slidably engaged in the inner groove of the rotary table body (4). The pull rod (601) of the mounting mechanism (6) is slidably disposed in the rotary table body (4). The spring (605) of the mounting mechanism (6) is disposed between the inner wall of the rotary table body (4) and the pull rod (601) for pushing the pull rod (601) to engage and lock with the transmission rod (602). Rotating mechanism (7) is used to manually drive the rotary table body (4) to rotate. The worm wheel (705) of the rotating mechanism (7) is integrally formed or fixedly connected to the outer periphery of the rotating ring (603). The worm (704) of the rotating mechanism (7) meshes with the worm wheel (705). The throttle (701) of the rotating mechanism (7) is rotatably connected to the machine tool housing (1) and is connected to the worm (704) through the bevel gear set (703).
2. The rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: In the installation mechanism (6), one end of the pull rod (601) is provided with a locking pin, and the transmission rod (602) is provided with a locking groove that cooperates with the locking pin to achieve the locking.
3. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: In the installation mechanism (6), the rod body of the transmission rod (602) has a non-circular cross section, and the inner groove of the rotary table body (4) is a non-circular groove adapted to the non-circular cross section, so as to transmit torque when sliding and engaging.
4. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: The rotating mechanism (7) also includes a mounting plate (702), which is fixed to the side wall of the machine tool housing (1). The throttle (701) is rotatably connected to the mounting plate (702) and passes through the machine tool housing (1).
5. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: In the rotating mechanism (7), the bevel gear set (703) includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to the inner end of the throttle (701), and the second bevel gear is fixedly connected to one end of the worm (704). The first bevel gear meshes with the second bevel gear.
6. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: The end of the pull rod (601) away from the transmission rod (602) is provided with a pull ring or handle, which is used to pull the pull rod (601) to release the engagement with the transmission rod (602) during disassembly.
7. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: It also includes a mounting bracket (3) and a motor (2). The mounting bracket (3) is fixed to one side of the machine tool housing (1). The motor (2) is mounted on the mounting bracket (3). The output shaft of the motor (2) is connected to the rotating ring (603) through a transmission mechanism.
8. A rotary table for CNC machine tools that is easy to install and maintain according to claim 1, characterized in that: The rotary table body (4) has scale bars (5) marked on its side wall.