Dual-motor anti-backlash heavy-load numerical control rotary table

Abstract

The invention provides a dual-motor anti-backlash heavy-load numerical control rotary table, and belongs to the field of numerical control machine tools, the dual-motor anti-backlash heavy-load numerical control rotary table comprises a main base body, a base protection top block is fixedly connected to the top surface of the main base body through a horizontal bolt, and a working platform is horizontally arranged on the top surface of the base protection top block. The rotary table can accurately rotate and position according to a preset angle, and a high-precision machining reference is provided for a workpiece, so that the size precision and the shape precision of a machined part are remarkably improved, and the requirement for high-precision machining is met. For example, in the machining process of aerospace parts, the rotary table can ensure that the machining precision reaches the micron level for machining of some holes, contours and other characteristics with extremely high precision requirements, the quality and performance of the parts are effectively improved, overall workpiece machining can be more accurate and efficient, and the machining efficiency is improved. And multiple directions can be expanded to meet the machining requirement, the bearing capacity is greatly improved, and the range of the types of machined workpieces is further widened.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and more specifically, to a dual-motor backlash-free heavy-duty CNC rotary table. Background Technology

[0002] In the field of CNC machine tool technology, the rotary table, as a key component, is widely used in various machining centers to achieve workpiece rotation and positioning to meet machining requirements at different angles. With the rapid development of the manufacturing industry, higher demands are being placed on the machining accuracy, efficiency, and stability of CNC machine tools. Traditional CNC rotary tables, when faced with heavy-duty, high-precision machining tasks, have gradually revealed a series of problems, becoming a bottleneck restricting the improvement of machining quality and efficiency.

[0003] First, in heavy-duty machining scenarios, the single-motor drive method used in traditional rotary tables has significant shortcomings. A single motor must withstand a large load when driving the rotary table, which easily leads to significant vibration and noise during operation. Simultaneously, the concentrated load accelerates motor wear, shortening its lifespan and increasing equipment maintenance costs and downtime. More importantly, single-motor drives struggle to ensure the stability of the rotary table during rotation, easily resulting in vibration, which affects machining accuracy and fails to meet the requirements of high-precision machining. Second, traditional CNC rotary tables also have limitations in braking. During machining, when a rapid stop is required, traditional braking methods may fail to achieve timely and effective braking, leading to overshoot. This not only affects machining efficiency but may also damage the workpiece and machine tool. Furthermore, unstable braking processes can exert significant impact forces on the internal structure of the rotary table, accelerating component wear and reducing equipment lifespan. Summary of the Invention

[0004] The purpose of this invention is to address the significant shortcomings of traditional single-motor drive systems used in heavy-duty machining scenarios. A single motor driving the rotary table must withstand a large load, which easily leads to significant vibration and noise during operation. Simultaneously, the concentrated load accelerates motor wear, shortening its lifespan and increasing maintenance costs and downtime. More importantly, single-motor drives struggle to ensure the rotary table's stability during rotation, easily resulting in vibration and affecting machining accuracy, failing to meet high-precision machining requirements. Secondly, traditional CNC rotary tables also have limitations in braking. During machining, when a rapid stop is needed, traditional braking methods may fail to achieve timely and effective braking, leading to overshoot. This not only affects machining efficiency but can also damage the workpiece and machine tool. Furthermore, unstable braking processes can exert significant impact on the rotary table's internal structure, accelerating component wear and reducing equipment lifespan. Therefore, this invention proposes a dual-motor backlash-free heavy-duty CNC rotary table.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: It is applied to CNC machine tool devices to improve the above-mentioned problems.

[0006] The present invention is as follows: The system includes a main base body, a base protective block horizontally bolted to the top surface of the main base body, a working platform horizontally mounted on the top surface of the base protective block, a motor protective body bolted to the outer side of the main base body, a main motor body horizontally and symmetrically bolted to the inner side of the motor protective body, a transmission body bolted to one end of the main motor body, a transmission gear mounted at the top of the transmission body, an inner ring bearing body horizontally bolted to the top surface of the main base body, connecting through holes evenly spaced on the top surface of the inner ring bearing body, bearing rollers snapped onto the outer side of the inner ring bearing body, an outer ring body horizontally sleeved on the outer side of the inner ring bearing body, a main fixing hole evenly spaced on the top surface of the outer ring body, the outer ring body fixedly mounted on the bottom surface of the working platform via internal bolts through the main fixing holes, an external gear ring horizontally mounted on the outer side of the outer ring body, and a brake module bolted to the inner side of the base protective block. The brake module includes a brake body, on which piston channels are evenly formed on the top and bottom surfaces. A tin bronze piston is inserted into the inner side of the piston channel. A brake bracket is fixedly connected to the side of the brake body. A brake band is horizontally joined to the top and bottom surfaces of the brake body.

[0007] As a preferred technical solution of the present invention, the main base body is provided with symmetrical mating grooves on its side, and the inner bottom surface of the mating grooves is provided with mounting through holes. The two sides of the main base body are symmetrically fixedly connected with fixing blocks, and the bottom grooves of the main base body are fixedly connected with hydraulic channel interfaces. The hydraulic channel interfaces are connected to external hydraulic equipment through pipes.

[0008] As a preferred technical solution of the present invention, a protective sealing plate is bolted to the side opening of the protective top block of the base, a worktable cover is bolted to the center of the top surface of the work platform, and a worktable sealing plate is bolted to the bottom surface of the work platform. The four protective sealing plates are bolted to the four corners of the bottom surface of the work platform.

[0009] As a preferred technical solution of the present invention, the bottom surface of the main base body is connected to the installation position of the CNC machine tool, and the main base body is fixedly installed at a designated point on the machine tool by internal bolts through the mounting through holes. There are four base protective top blocks, and the four base protective top blocks are symmetrically fixedly connected at the four corners of the top surface of the main base body. The side arc grooves of the four base protective top blocks are arranged in a circular groove shape.

[0010] As a preferred technical solution of the present invention, the working platform and the main base are arranged in parallel and superimposed on each other, and there is a gap between the bottom surface of the working platform and the top surface of the protective block of the base. The top surface of the working platform is uniformly provided with an installation groove structure, and the motor protection body is fixedly connected to the side groove opening end of the main base.

[0011] As a preferred technical solution of the present invention, there are two main motor bodies, and the two main motor bodies are arranged horizontally and symmetrically in a straight line on the inner side of the motor protection body. The output end of the main motor body extends to the inner side of the transmission body for mechanical connection. The transmission body is arranged in an L-shape, and the inner side of the transmission body is provided with gear transmission and lubricating oil material.

[0012] As a preferred technical solution of the present invention, the shaft end of the transmission gear extends and is inserted into the inner side of the transmission body, and the bottom end of the extension maintains a mechanical connection with the interior of the transmission body. The side of the transmission gear extends horizontally to the inner side of the arc groove of the base protective top block, and the inner ring bearing body is fixedly connected to the center of the top surface of the main base body by the internal bolts of the connecting through hole.

[0013] As a preferred technical solution of the present invention, the number of bearing rollers is multiple, and the multiple bearing rollers are snapped together between the outer side of the inner ring bearing body and the inner side of the outer ring body. The outer teeth of the outer gear ring body and the outer teeth of the transmission gear are toothed together. The brake modules are all fixedly connected to the inner side of the arc-shaped groove of the four base protective top blocks.

[0014] As a preferred technical solution of the present invention, the number of brake modules is four, and all four brake modules are connected to the hydraulic channel interface. The brake body is fixedly installed on the inner side of the base protective top block by the brake bracket on the side, and the brake body is horizontally positioned between the top surface of the outer gear ring body and the bottom of the working platform. The hydraulic oil of the hydraulic channel interface at one end of the tin bronze piston body is squeezed and positioned at the mating ring position between the top surface of the outer gear ring body and the bottom of the working platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the solution of the present invention: 1. By employing a symmetrical design with two motors on the main motor body, both providing power to the rotary table, the rotary table can withstand greater loads. Under heavy-duty machining conditions, the two motors work together, fully utilizing their respective power performance to ensure stable and reliable operation of the rotary table. Compared to traditional single-motor driven rotary tables, this dual-motor backlash-free heavy-duty CNC rotary table can bear several times or even tens of times the weight, greatly expanding its application range. For example, in fields such as large mold processing and heavy machinery parts processing, it can easily handle various heavy-duty machining tasks, improving production efficiency and processing quality. Simultaneously, due to the load-distributing effect of the two motors, wear on individual motors is reduced, extending motor lifespan and lowering equipment maintenance costs.

[0016] 2. The dual-motor backlash-free heavy-duty CNC rotary table features a rational structural design with tight and robust connections between all components. The main base serves as the foundation support, reliably connected to the machine tool via mounting holes and fixing blocks, ensuring the overall stability of the rotary table. The base's protective top block not only provides protection but also offers precise positional references for the installation of other components. The fixed connection between the work platform and the outer ring, along with the fit between the inner ring bearing and the bearing rollers, allows the rotary table's rotating parts to operate flexibly and stably. The motor protection body effectively protects the main motor body, preventing dust and debris from entering and affecting its performance. Furthermore, all components are made of high-quality materials and undergo rigorous processing and heat treatment, resulting in high strength and hardness. This ensures structural stability during prolonged, high-intensity use, preventing deformation or damage and improving the equipment's reliability and service life.

[0017] 3. The design of the brake module provides reliable braking for the rotary table. When it is necessary to stop the rotary table's rotation, the hydraulic system supplies hydraulic oil to the brake module through the hydraulic channel interface. The tin bronze piston body is squeezed outward under the action of the hydraulic oil, causing the brake band to fit tightly against the top surface of the external gear ring and the bottom mating ring of the work platform, generating strong friction and achieving rapid and stable braking. This braking method can stop the rotary table in a very short time, effectively avoiding overshoot and improving processing efficiency and safety. Moreover, the brake band is made of a special material with good wear resistance and heat resistance, maintaining stable braking performance during long-term use, reducing the frequency of brake component replacement and lowering operating costs.

[0018] 4. The dual-motor backlash-eliminating heavy-duty CNC rotary table employs a dual-motor drive system. Two main motors work together to drive the rotary table's rotation. This design effectively distributes the load, reducing the burden on individual motors and making the rotary table run more smoothly, significantly reducing vibration and shaking caused by excessive motor load. Simultaneously, a special gear transmission design, where the transmission gear meshes with the outer teeth of the external gear ring, effectively eliminates gear backlash, avoiding the backlash errors caused by gear backlash in traditional rotary tables. During machining, the rotary table can precisely rotate and position itself according to a preset angle, providing a high-precision machining reference for the workpiece. This significantly improves the dimensional and shape accuracy of machined parts, meeting the demands of high-precision machining. For example, in the machining of aerospace components, for features requiring extremely high precision, such as holes and contours, this rotary table ensures machining accuracy at the micron level, effectively improving part quality and performance. Overall, workpiece machining is more precise and efficient, and it can be expanded to meet multi-directional machining needs, significantly increasing load-bearing capacity and broadening the range of workpiece types that can be processed. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the overall three-dimensional installation and connection structure provided by the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional installation and connection structure provided by the present invention from a bottom view. Figure 3 A schematic diagram of the overall three-dimensional bottom detail structure provided for this invention; Figure 4 A three-dimensional top view of the connection structure of the workbench sealing plate provided by the present invention; Figure 5 This is a top view of the connection structure of the base protective top block provided by the present invention; Figure 6 A top view of the inner ring bearing body connection details provided by the present invention; Figure 7 A front view of the connection details of the inner ring bearing body provided by the present invention; Figure 8 A schematic diagram showing the internal connection details of the base protective top block provided by the present invention (viewed from below). Figure 9 This is a top view schematic diagram showing the connection details of the base protective top block provided by the present invention; Figure 10 A schematic diagram showing the internal connection details of the motor protection body provided by the present invention (viewed from below). Figure 11 This is a top view of the connection details of the motor protection body provided by the present invention.

[0020] The image shows: 1. Main base body; 101. Mating groove; 102. Mounting through hole; 103. Fixing block; 104. Hydraulic channel interface; 2. Base protective top block; 201. Protective sealing plate; 3. Working platform; 301. Workbench cover; 302. Workbench sealing plate; 4. Motor protective body; 401. Main motor body; 402. Transmission body; 403. Transmission gear; 5. Inner ring bearing body; 501. Connecting through hole; 502. Bearing roller; 6. Outer ring body; 601. Main fixing hole; 602. External gear ring body; 7. Brake module; 701. Brake body; 702. Tin bronze piston body; 703. Brake bracket; 704. Brake band; 705. Piston groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: like Figure 1-11As shown, the present invention provides a technical solution: a dual-motor backlash-free heavy-duty CNC rotary table, including a main base body 1, a base protective top block 2 fixedly connected to the top surface of the main base body 1 by horizontal bolts, a mating groove 101 symmetrically opened on the side of the main base body 1, an installation through hole 102 opened on the inner bottom surface of the mating groove 101, a fixing block 103 symmetrically fixedly connected to the two sides of the main base body 1, a hydraulic channel interface 104 fixedly connected inside the groove on the bottom surface of the main base body 1, the hydraulic channel interface 104 being connected to an external hydraulic device through a pipe, the bottom surface of the main base body 1 being installed at the installation position of the CNC machine tool, and the main base body 1 being fixedly installed at a designated point on the machine tool by internal bolts through the installation through hole 102, the number of base protective top blocks 2 being four, and the four base protective top blocks 2 being symmetrically fixedly connected at the four corners of the top surface of the main base body 1. The side arc-shaped groove of the base protective top block 2 is arranged in a circular groove shape. The top surface of the base protective top block 2 is horizontally provided with a work platform 3. The side opening of the base protective top block 2 is bolted to a protective sealing plate 201. The center of the top surface of the work platform 3 is bolted to a workbench cover 301. The bottom surface of the work platform 3 is symmetrically bolted to a workbench sealing plate 302. The four protective sealing plates 201 are bolted to the four corners of the bottom surface of the work platform 3. The outer side of the main base body 1 is bolted to a motor protection body 4. The work platform 3 and the main base body 1 are arranged in parallel and stacked. There is a gap between the bottom surface of the work platform 3 and the top surface of the base protective top block 2. The top surface of the work platform 3 is evenly provided with an installation groove structure. The motor protection body 4 is fixedly connected to the side groove opening of the main base body 1.

[0023] The dual-motor backlash-free heavy-duty CNC rotary table employs a dual-motor drive system, with two main motor bodies 401 working together to drive the rotary table's rotation. This design effectively distributes the load, reducing the burden on individual motors and making the rotary table operate more smoothly, significantly reducing vibration and shaking caused by excessive motor load.

[0024] Example 2: like Figure 1-11As shown, the present invention provides a technical solution: a dual-motor backlash-free heavy-duty CNC rotary table, comprising a main base body 1, a base protective top block 2 fixedly connected to the top surface of the main base body 1 by horizontal bolts, symmetrically provided mating grooves 101 on the sides of the main base body 1, and mounting through holes 102 on the inner bottom surface of the mating grooves 101, symmetrically fixedly connected to the two sides of the main base body 1 by fixing blocks 103, and a hydraulic channel interface 104 fixedly connected inside the groove on the bottom surface of the main base body 1, the hydraulic channel interface 104 being connected to an external hydraulic device through a pipe, the bottom surface of the main base body 1 being installed at the mounting position of the CNC machine tool, and the main base body 1 being fixedly installed by the internal bolts of the mounting through holes 102. Four protective base blocks 2 are installed at designated locations on the machine tool. These four protective base blocks 2 are symmetrically and fixedly connected to the four corners of the top surface of the main base body 1. The side arc-shaped grooves of the four protective base blocks 2 form a circular groove shape. A work platform 3 is horizontally mounted on the top surface of the protective base blocks 2. Protective sealing plates 201 are bolted to the side openings of the protective base blocks 2. A worktable cover 301 is bolted to the center of the top surface of the work platform 3. Worktable sealing plates 302 are symmetrically bolted to the bottom surface of the work platform 3. The four protective sealing plates 201 are bolted and sealed to the four corners of the bottom surface of the work platform 3. The main base body 1… The outer side is bolted to a motor protection body 4. The working platform 3 and the main base 1 are arranged in parallel and stacked arrangement, with a gap between the bottom surface of the working platform 3 and the top surface of the base protection block 2. The top surface of the working platform 3 is evenly provided with mounting grooves. The motor protection body 4 is fixedly connected to the side groove opening of the main base 1. The inner side of the motor protection body 4 is horizontally and symmetrically fixed to a main motor body 401. One end of the main motor body 401 is fixedly connected to a transmission body 402. There are two main motor bodies 401, and the two main motor bodies 401 are arranged horizontally and symmetrically in a straight line on the inner side of the motor protection body 4. The output end extends to the inner side of the transmission body 402 for mechanical connection. The transmission body 402 is L-shaped and has gear transmission and lubricating oil material on its inner side. The top of the transmission body 402 is connected to the transmission gear 403. The top surface of the main base 1 is horizontally fixed to the inner ring bearing body 5. The shaft end of the transmission gear 403 extends and is inserted into the inner side of the transmission body 402, and the bottom end of the extension is mechanically connected to the inside of the transmission body 402. The side of the transmission gear 403 extends horizontally to the inner side of the arc groove of the base protective top block 2. The inner ring bearing body 5 is fixedly connected to the center of the top surface of the main base 1 by the internal bolts of the connecting through hole 501.

[0025] By engaging the outer teeth of the transmission gear 403 with those of the outer gear ring 602, gear transmission backlash can be effectively eliminated, avoiding the backlash error caused by gear backlash in traditional rotary tables. During machining, the rotary table can precisely rotate and position itself according to a preset angle, providing a high-precision machining reference for the workpiece, thereby significantly improving the dimensional and shape accuracy of the machined parts and meeting the requirements of high-precision machining.

[0026] Example 3: like Figure 1-11As shown, the present invention provides a technical solution: a dual-motor backlash-free heavy-duty CNC rotary table, including a main base body 1, a base protective top block 2 fixedly connected to the top surface of the main base body 1 by horizontal bolts, symmetrical mating grooves 101 opened on the side of the main base body 1, mounting through holes 102 opened on the inner bottom surface of the mating grooves 101, fixing blocks 103 symmetrically fixedly connected to the two sides of the main base body 1, a hydraulic channel interface 104 fixedly connected inside the groove on the bottom surface of the main base body 1, the hydraulic channel interface 104 being connected to an external hydraulic device through a pipe, the bottom surface of the main base body 1 being installed at the mounting position of the CNC machine tool, and the main base body 1 being fixedly installed at a designated point on the machine tool by internal bolts through the mounting through holes 102, the base protective top block 2 being fixedly installed. There are four base protection blocks 2, which are symmetrically and fixedly connected to the four corners of the top surface of the main base body 1. The four base protection blocks 2 have arc-shaped grooves on their sides arranged in a circular groove shape. A work platform 3 is horizontally set on the top surface of the base protection blocks 2. A protective sealing plate 201 is bolted to the side opening of the base protection blocks 2. A worktable cover 301 is bolted to the center of the top surface of the work platform 3. A worktable sealing plate 302 is bolted to the bottom surface of the work platform 3. The four protective sealing plates 201 are bolted and sealed to the four corners of the bottom surface of the work platform 3. A motor protection body 4 is bolted to the outer side of the main base body 1. The work platform 3 and the main base body 1 are mutually... The components are arranged in a parallel, stacked configuration, with a gap between the bottom surface of the work platform 3 and the top surface of the base protective block 2. The top surface of the work platform 3 has evenly spaced mounting grooves. The motor protective body 4 is fixedly connected to the side groove opening of the main base body 1. A main motor body 401 is horizontally and symmetrically fixedly connected to the inner side of the motor protective body 4. One end of the main motor body 401 is fixedly connected to a transmission body 402. There are two main motor bodies 401, arranged horizontally and symmetrically in a straight line on the inner side of the motor protective body 4. The output end of the main motor body 401 extends to the inner side of the transmission body 402 for mechanical connection. The transmission body 402 is L-shaped, and its inner... The transmission mechanism 402 is equipped with gear transmission and lubricating oil material on the side. A transmission gear 403 is connected to the top of the transmission body 402. An inner ring bearing body 5 is horizontally fixed to the top surface of the main base body 1. The top surface of the inner ring bearing body 5 is evenly provided with connecting through holes 501. The shaft end of the transmission gear 403 extends and is inserted into the inner side of the transmission body 402, and the bottom end of the extension is mechanically connected to the interior of the transmission body 402. The side of the transmission gear 403 extends horizontally to the inner side of the arc-shaped groove of the base protective top block 2. The inner ring bearing body 5 is fixedly connected to the center of the top surface of the main base body 1 by the internal bolts of the connecting through holes 501. A bearing roller 502 is snapped into the outer side of the inner ring bearing body 5, and an outer ring body 6 is horizontally sleeved on the outer side of the inner ring bearing body 5.The outer ring body 6 has evenly spaced main fixing holes 601 on its top surface. The outer ring body 6 is fixedly connected to the bottom surface of the work platform 3 via internal bolts through the main fixing holes 601. An external gear ring body 602 is horizontally arranged on the outer side of the outer ring body 6. A brake module 7 is bolted to the inner side of the base protective top block 2. Multiple bearing rollers 502 are engaged between the outer side of the inner ring bearing body 5 and the inner side of the outer ring body 6. The outer teeth of the external gear ring body 602 are meshed with the outer teeth of the transmission gear 403. The brake modules 7 are correspondingly fixedly connected to the inner sides of the arc-shaped grooves of the four base protective top blocks 2.

[0027] The rotary table is reliably connected to the machine tool via the mounting through-hole 102 and the fixing block 103, ensuring overall stability. The base protective top block 2 not only provides protection but also offers precise positional references for the installation of other components. The fixed connection between the work platform 3 and the outer ring body 6, as well as the cooperation between the inner ring bearing body 5 and the bearing rollers 502, enable the rotating parts of the rotary table to operate flexibly and stably.

[0028] Example 4: like Figure 1-11As shown, the present invention provides a technical solution: a dual-motor backlash-free heavy-duty CNC rotary table, including a main base body 1, a base protective top block 2 fixedly connected to the top surface of the main base body 1 by horizontal bolts, symmetrical mating grooves 101 opened on the side of the main base body 1, mounting through holes 102 opened on the inner bottom surface of the mating grooves 101, fixing blocks 103 symmetrically fixedly connected to the two sides of the main base body 1, a hydraulic channel interface 104 fixedly connected inside the groove on the bottom surface of the main base body 1, the hydraulic channel interface 104 being connected to an external hydraulic device through a pipe, the bottom surface of the main base body 1 being installed at the mounting position of the CNC machine tool, and the main base body 1 being fixedly installed at a designated point on the machine tool by internal bolts through the mounting through holes 102, the base protective top block 2 being fixedly installed. There are four base protection blocks 2, which are symmetrically and fixedly connected to the four corners of the top surface of the main base body 1. The four base protection blocks 2 have arc-shaped grooves on their sides arranged in a circular groove shape. A work platform 3 is horizontally set on the top surface of the base protection blocks 2. A protective sealing plate 201 is bolted to the side opening of the base protection blocks 2. A worktable cover 301 is bolted to the center of the top surface of the work platform 3. A worktable sealing plate 302 is bolted to the bottom surface of the work platform 3. The four protective sealing plates 201 are bolted and sealed to the four corners of the bottom surface of the work platform 3. A motor protection body 4 is bolted to the outer side of the main base body 1. The work platform 3 and the main base body 1 are mutually... The components are arranged in a parallel, stacked configuration, with a gap between the bottom surface of the work platform 3 and the top surface of the base protective block 2. The top surface of the work platform 3 has evenly spaced mounting grooves. The motor protective body 4 is fixedly connected to the side groove opening of the main base body 1. A main motor body 401 is horizontally and symmetrically fixedly connected to the inner side of the motor protective body 4. One end of the main motor body 401 is fixedly connected to a transmission body 402. There are two main motor bodies 401, arranged horizontally and symmetrically in a straight line on the inner side of the motor protective body 4. The output end of the main motor body 401 extends to the inner side of the transmission body 402 for mechanical connection. The transmission body 402 is L-shaped, and its inner... The transmission mechanism 402 is equipped with gear transmission and lubricating oil material on the side. A transmission gear 403 is connected to the top of the transmission body 402. An inner ring bearing body 5 is horizontally fixed to the top surface of the main base body 1. The top surface of the inner ring bearing body 5 is evenly provided with connecting through holes 501. The shaft end of the transmission gear 403 extends and is inserted into the inner side of the transmission body 402, and the bottom end of the extension is mechanically connected to the interior of the transmission body 402. The side of the transmission gear 403 extends horizontally to the inner side of the arc-shaped groove of the base protective top block 2. The inner ring bearing body 5 is fixedly connected to the center of the top surface of the main base body 1 by the internal bolts of the connecting through holes 501. A bearing roller 502 is snapped into the outer side of the inner ring bearing body 5, and an outer ring body 6 is horizontally sleeved on the outer side of the inner ring bearing body 5.The top surface of the outer ring body 6 is evenly provided with main fixing holes 601. The outer ring body 6 is fixedly connected to the bottom surface of the working platform 3 through the internal bolts of the main fixing holes 601. An external gear ring body 602 is horizontally arranged on the outer side of the outer ring body 6. A brake module 7 is fixedly connected to the inner side of the base protective top block 2 by bolts. There are multiple bearing rollers 502, and the multiple bearing rollers 502 are snapped between the outer side of the inner ring bearing body 5 and the inner side of the outer ring body 6. The outer teeth of the external gear ring body 602 are toothed to the outer teeth of the transmission gear 403. The brake modules 7 are all fixedly connected to the inner sides of the arc-shaped grooves of the four base protective top blocks 2. The brake module 7 includes a brake body 701. Piston channels 705 are evenly provided on the top and bottom surfaces of the brake body 701. A tin bronze piston body 702 is inserted into the inner side of the piston channel 705. A brake bracket 703 is fixedly connected to the side of the brake body 701. A brake band 704 is horizontally connected to the top and bottom surfaces of the brake body 701. There are four brake modules 7, and all four brake modules 7 are connected to the hydraulic channel interface 104. The brake body 701 is fixedly installed on the inner side of the base protective top block 2 through the brake bracket 703 on the side. The brake body 701 is horizontally positioned between the top surface of the outer gear ring body 602 and the bottom of the working platform 3. The hydraulic oil of the hydraulic channel interface 104 at one end of the tin bronze piston body 702 is squeezed and positioned at the mating ring position between the top surface of the outer gear ring body 602 and the bottom of the working platform 3.

[0029] The design of brake module 7 provides a reliable guarantee for the braking of the rotary table. When it is necessary to stop the rotation of the rotary table, the hydraulic system introduces hydraulic oil into brake module 7 through hydraulic channel interface 104. The tin bronze piston body 702 is squeezed outward under the action of hydraulic oil, so that the brake band 704 fits tightly against the top surface of the outer gear ring body 602 and the bottom mating ring position of the working platform 3, generating a strong friction force, thereby achieving fast and stable braking.

[0030] Working Principle: The main base 1 is transported to the installation position on the CNC machine tool, and the top surface of the main base 1 is leveled using a level. Appropriate shims are added between the bottom surface of the main base 1 and the mounting base to ensure the top surface of the main base 1 meets the specified level requirements. Generally, the levelness error should be controlled within a very small range to ensure the stability of the rotary table during operation. After leveling, the main base 1 is securely fixed to the designated position on the machine tool using high-strength bolts through the mounting through holes 102 on the inner bottom surface of the side fitting groove 101. When tightening the bolts, the specified torque should be used to ensure reliable bolt connection and prevent loosening during use. Simultaneously, the fixing blocks 103 symmetrically fixed to both sides of the main base 1 are connected and fixed to the corresponding parts of the machine tool to further enhance the installation stability of the main base 1. After installing the base protective top block 2, bolt the protective sealing plate 201 to the side opening position. The protective sealing plate 201 should be installed firmly to play a protective role and prevent dust, debris and other objects from entering the rotary table and affecting its normal operation.

[0031] Place the work platform 3 on the top surface of the base protective block 2, and adjust its position so that the center of its top surface matches the design requirements. Use bolts to initially fix the work platform 3 to the base protective block 2 via the structure of its bottom surface, but do not tighten the bolts at this stage to allow for precise adjustments later. Bolt the worktable cover 301 to the center of the top surface of the work platform 3. The worktable cover 301 should be installed flat and tightly fitted to the top surface of the work platform 3. Simultaneously, bolt the worktable sealing plates 302 symmetrically to the bottom surface of the work platform 3. The four worktable sealing plates 302 are bolted together at the four corners of the bottom surface of the work platform 3, ensuring a relatively enclosed space inside the work platform 3, protecting internal components and preventing lubricant leakage. Use bolts to fix the outer ring body 6 to the bottom surface of the work platform 3 through the evenly spaced main fixing holes 601 on its top surface, ensuring a secure and reliable connection between the outer ring body 6 and the work platform 3.

[0032] Extend the output end of the main motor body 401 to the inner side of the transmission body 402 and make a mechanical connection. The connection must be tight and reliable to ensure that the power of the main motor body 401 can be accurately transmitted to the transmission body 402. Extend and insert the shaft end of the transmission gear 403 into the inner side of the transmission body 402, and ensure that the bottom end of the extension maintains a precise mechanical connection with the interior of the transmission body 402, so that the transmission gear 403 can rotate stably as the transmission body 402 operates. Adjust the position of the transmission gear 403 so that its side extends horizontally to the inner side of the arc-shaped groove of the base protective top block 2, and meshes with the outer teeth of the outer gear ring body 602, which is horizontally set on the outer side of the outer ring body 6, ensuring that the meshing is accurate, tight, and without jamming.

[0033] A tin bronze piston body 702 is inserted into the inner side of the piston channels 705 evenly opened on the top and bottom surfaces of the brake body 701. The tin bronze piston body 702 must be installed in place and able to slide freely. The top and bottom surfaces of the brake body 701 are horizontally aligned with the brake band 704. The brake band 704 must be installed flat and tightly fitted to the top and bottom surfaces of the brake body 701. The hydraulic channel interfaces 104, which are fixedly connected to the bottom channels of the main base body 1, are kept in contact to ensure that hydraulic oil can smoothly flow into the brake modules 7 to provide power for braking.

[0034] Connect the power and hydraulic power sources, and start the main motor body 401 to begin operation of the rotary table. During low-speed operation, carefully observe the rotary table's operation and check for any abnormal noises or vibrations. Use measuring tools such as a micrometer to check the rotary table's rotational accuracy, such as radial runout and end face runout, to ensure they meet design requirements. Adjust the braking system by controlling the hydraulic system to activate brake module 7 and check if the rotary table can stop promptly and stably, and if the braking distance is within the specified range. Based on any issues discovered during debugging, make timely adjustments and optimizations until the rotary table operates normally and all performance indicators meet design requirements.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present technical solution are within the protection scope of the present invention.

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-motor backlash-free heavy-duty CNC rotary table, comprising a main base body, characterized in that, The main base body is horizontally bolted to a base protection block. A working platform is horizontally set on the top surface of the base protection block. A motor protection body is bolted to the outer side of the main base body. A main motor body is horizontally and symmetrically bolted to the inner side of the motor protection body. A transmission body is bolted to one end of the main motor body. A transmission gear is connected to the top of the transmission body. An inner ring bearing body is horizontally bolted to the top surface of the main base body. A connecting through hole is evenly opened on the top surface of the inner ring bearing body. A bearing roller is snapped onto the outer side of the inner ring bearing body. An outer ring body is horizontally sleeved on the outer side of the inner ring bearing body. A main fixing hole is evenly opened on the top surface of the outer ring body. The outer ring body is fixedly set to the bottom surface of the working platform through the internal bolts of the main fixing hole. An external gear ring body is horizontally set on the outer side of the outer ring body. A brake module is bolted to the inner side of the base protection block. The brake module includes a brake body, on which piston channels are evenly formed on the top and bottom surfaces. A tin bronze piston is inserted into the inner side of the piston channel. A brake bracket is fixedly connected to the side of the brake body. A brake band is horizontally joined to the top and bottom surfaces of the brake body.

2. The dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The main base body has symmetrically opened mating grooves on its side, and the inner bottom surface of the mating grooves has an installation through hole. The two sides of the main base body are symmetrically fixedly connected with fixing blocks. The bottom groove of the main base body is fixedly connected with a hydraulic channel interface, which is connected to an external hydraulic device through a pipe.

3. The dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The protective sealing plate is bolted to the side opening of the protective top block of the base, the work platform cover is bolted to the center of the top surface of the work platform, the work platform sealing plate is bolted to the bottom surface of the work platform, and the four protective sealing plates are bolted to the four corners of the bottom surface of the work platform.

4. The dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The bottom surface of the main base body is connected to the installation position of the CNC machine tool, and the main base body is fixedly installed at the designated point of the machine tool by the internal bolts of the installation through hole. There are four base protective top blocks, and the four base protective top blocks are symmetrically fixedly connected at the four corners of the top surface of the main base body. The side arc grooves of the four base protective top blocks are arranged in a circular groove shape.

5. A dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The working platform and the main base are arranged in parallel and stacked on each other, and there is a gap between the bottom surface of the working platform and the top surface of the protective block of the base. The top surface of the working platform is evenly provided with mounting grooves, and the motor protection body is fixedly connected to the side groove opening of the main base.

6. A dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, There are two main motor bodies, which are arranged horizontally and symmetrically in a straight line on the inner side of the motor protection body. The output end of the main motor body extends to the inner side of the transmission body for mechanical connection. The transmission body is L-shaped and has gear transmission and lubricating oil material on its inner side.

7. A dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The shaft end of the transmission gear extends and is inserted into the inner side of the transmission body, and the bottom end of the extension is mechanically connected to the interior of the transmission body. The side of the transmission gear extends horizontally to the inner side of the arc groove of the base protective top block. The inner ring bearing body is fixedly connected to the center of the top surface of the main base body by the internal bolts of the connecting through hole.

8. A dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The number of bearing rollers is multiple, and the multiple bearing rollers are snapped together between the outer side of the inner ring bearing body and the inner side of the outer ring body. The outer teeth of the outer gear ring body and the outer teeth of the transmission gear are toothed together. The brake modules are all fixedly connected to the inner side of the arc-shaped grooves of the four base protective top blocks.

9. A dual-motor backlash-free heavy-duty CNC rotary table according to claim 1, characterized in that, The number of brake modules is four, and all four brake modules are connected to the hydraulic channel interface. The brake body is fixedly installed on the inner side of the base protective top block by the brake bracket on the side, and the brake body is horizontally positioned between the top surface of the outer gear ring body and the bottom of the working platform. The hydraulic oil of the hydraulic channel interface at one end of the tin bronze piston body is squeezed and positioned at the mating ring position between the top surface of the outer gear ring body and the bottom of the working platform.

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