Precise multi-shaft output cradle five-shaft

By designing a precision multi-axis output cradle with five axes, the shortcomings of multi-axis linkage devices in terms of precision, adjustability, and protection are solved, achieving high-precision, flexible multi-axis control and equipment stability, making it suitable for high-precision machining fields.

CN224088436UActive Publication Date: 2026-04-07SHENZHEN BOSHI PRECISION MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-25
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing multi-axis linkage devices have shortcomings in terms of accuracy, structural design, adjustment capability, independent axis adjustment, and protective measures, which affect the realization of high-precision machining.

Method used

A precision multi-axis output cradle with five axes was designed. It uses a bridge plate, C-axis component, end face adjustment set screw and radial adjustment set screw, combined with servo motor and harmonic reducer to achieve high-precision adjustment and independent control of multiple axes, and is protected by skeleton oil seal and motor cover.

Benefits of technology

It improves the accuracy and consistency of multi-axis linkage, enhances the transmission efficiency and protection performance of the equipment, adapts to complex processing needs, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224088436U_ABST
Patent Text Reader

Abstract

The utility model provides a precise multi-shaft output cradle fifth shaft which comprises a bridge plate installed between a roller cam fourth shaft and a tailstock, and the roller cam fourth shaft is used for driving the bridge plate to rotate; the C-axis component comprises three independent output shaft assemblies, and the output shaft assemblies are installed on the bridge plate and driven by three servo motors respectively; the end face adjusting jackscrew is used for adjusting the disc face heights of the three output shaft assemblies to be consistent; and the radial adjusting jackscrew is used for adjusting the rotation centers of the three output shaft assemblies to be located in the same plane and to be coplanar with the rotation center of the roller cam four shaft. According to the precise multi-shaft output cradle five-shaft, through various innovative designs, the machining precision and stability of equipment are improved, meanwhile, the durability and reliability of the equipment are enhanced, and the precise multi-shaft output cradle five-shaft has important significance for promoting the development of the precise manufacturing technology.
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Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, specifically to a precision multi-axis output cradle with five axes. Background Technology

[0002] In industrial processing and automation equipment, multi-axis linkage devices (such as five-axis linkage devices) are widely used in high-precision machining tasks. These devices typically need to control multiple rotary and linear axes simultaneously to achieve the machining of complex shapes or precise control of spatial posture. However, existing multi-axis linkage devices still have some shortcomings in terms of accuracy, structural design, and adjustment capabilities.

[0003] The shortcomings of existing technology:

[0004] 1. Insufficient precision in multi-axis linkage

[0005] In the existing technology, the rotation center and the height of the disk surface of the multi-axis linkage device are not very consistent, which may lead to the accumulation of errors during the processing and affect the final processing accuracy.

[0006] 2. Limited adjustment capacity

[0007] Existing devices have low adjustment accuracy when adjusting the coplanarity of the rotation centers of multiple axes and the consistency of the disk height, making it difficult to meet the requirements of high-precision machining.

[0008] 3. Complex structure and difficult maintenance

[0009] The existing equipment has a relatively complex structural design, especially the multi-axis linkage part, which lacks effective sealing and protection measures, making it easy for impurities such as dust and oil to enter, affecting the long-term stability and reliability of the equipment.

[0010] 4. Lack of an independent shaft adjustment mechanism

[0011] Existing devices have weak independent adjustment capabilities for each axis when operating in multi-axis linkage, making it difficult to achieve precise spatial position consistency, especially in complex machining tasks involving multi-axis linkage.

[0012] Therefore, existing technologies have shortcomings and need further improvement. Utility Model Content

[0013] To address the problems existing in the prior art, this utility model provides a precision multi-axis output cradle with five axes.

[0014] To achieve the above objectives, the specific solution of this utility model is as follows:

[0015] This utility model provides a precision multi-axis output cradle with five axes, including:

[0016] The bridge plate is installed between the roller cam four-axis and the tailstock. The roller cam four-axis is used to drive the bridge plate to rotate.

[0017] The C-axis component includes three independent output shaft assemblies, which are mounted on the bridge plate and are driven by three servo motors respectively.

[0018] The end face adjusting screw is used to adjust the disc height of the three output shaft assemblies to be consistent.

[0019] The radial adjusting set screw is used to adjust the rotation centers of the three output shaft assemblies to be in the same plane and coplanar with the rotation centers of the four roller cam shafts.

[0020] Furthermore, the output shaft assembly includes: a servo motor, a motor base, and a flange;

[0021] The bridge plate is provided with three first mounting ports, and the upper end of the motor base is installed in the first mounting ports;

[0022] The motor base is provided with a second mounting port, and the flange is mounted on the output shaft of the servo motor. The flange is used to connect with external equipment.

[0023] The servo motor is mounted on a motor base, with its front end positioned at the second mounting port. The output shaft of the servo motor passes through the second mounting port, and the end face of the flange extends beyond the surface of the bridge plate.

[0024] Furthermore, a harmonic reducer is also provided between the output shaft of the servo motor and the flange. The output shaft of the servo motor is connected to the input shaft of the harmonic reducer, and the flange is mounted on the output shaft of the harmonic reducer.

[0025] Furthermore, the motor base is convex.

[0026] Furthermore, the end face adjusting screw is used to install the motor base on the lower side of the bridge plate and to adjust the height of the flange plate.

[0027] The radial adjusting screw is installed on the side of the bridge plate and is used to adjust the rotation axis of the three flanges to be in the same plane by adjusting the adjusting screw.

[0028] Furthermore, a skeleton oil seal is also provided between the outer side of the motor base and the inner side of the first mounting port.

[0029] Furthermore, this precision multi-axis output cradle has five axes and also includes a motor housing, which is mounted on the underside of the bridge plate, with the servo motor located within the motor housing.

[0030] Furthermore, the adjustment accuracy of the end face adjusting screw and the radial adjusting screw is 0.01 mm, which is used to achieve consistency of multi-axis spatial position.

[0031] The technical solution of this utility model has the following beneficial effects:

[0032] 1. High-precision adjustment capability

[0033] By adjusting the end face set screw and the radial set screw, the uniformity of the disk surface height and the coplanarity of the rotation center of the multi-axis can be achieved, which significantly improves the accuracy and consistency of multi-axis linkage.

[0034] 2. Independent shaft design enhances flexibility

[0035] The three output axis assemblies are independently mounted on the bridge plate and driven by three servo motors respectively, ensuring the independence and flexibility of each axis and meeting the high-precision requirements of multi-axis linkage in complex machining tasks.

[0036] 3. High-efficiency transmission system

[0037] A harmonic reducer is installed between the servo motor output shaft and the flange, which improves transmission efficiency and load capacity, and can better meet the needs of high-precision and high-load machining.

[0038] 4. Structural optimization and protective design

[0039] A skeleton oil seal is installed between the motor base and the bridge plate to effectively prevent dust and oil from entering and extend the service life of the equipment.

[0040] 5. Modular design facilitates maintenance.

[0041] Each component (such as the motor base, flange, harmonic reducer, etc.) adopts a modular design, which facilitates installation, maintenance and replacement, and reduces the maintenance cost of the equipment.

[0042] 6. Improved protection and sealing performance

[0043] The design of the motor housing further enhances the protective performance of the device. The servo motor is installed in the motor housing, which can effectively prevent external environmental interference to the motor and improve the reliability of the equipment.

[0044] 7. Adaptable to complex processing requirements

[0045] The overall design optimizes the structure and function of multi-axis linkage, enabling it to adapt to the high-precision machining requirements of complex shapes and making it suitable for high-precision machining fields such as aerospace and automotive manufacturing. Attached Figure Description

[0046] Figure 1 This is a perspective view of the present invention;

[0047] Figure 2 This is a perspective view of the bridge plate and three output shaft assemblies of this utility model;

[0048] Figure 3 This is a cross-sectional view of the bridge plate and three output shaft assemblies of this utility model;

[0049] In the picture:

[0050] 1. Flange; 2. Harmonic reducer; 3. Oil seal; 4. Bridge plate; 5. Motor base; 6. Servo motor; 7. Motor cover; 8. End face adjusting screw; 9. Radial adjusting screw; 10. Tailstock; 11. C-axis assembly; 12. Roller cam four-axis. Detailed Implementation

[0051] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0052] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this embodiment, the terms "upper," "lower," "front," "rear," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0055] Combination Figures 1-3 As shown, this utility model provides a precision multi-axis output cradle with five axes, including:

[0056] Bridge plate 4 is installed between roller cam four shaft 12 and tailstock 10. Roller cam four shaft 12 is used to drive bridge plate 4 to rotate.

[0057] C-axis component 11 includes three independent output shaft assemblies, which are mounted on bridge plate 4 and driven by three servo motors 6 respectively.

[0058] The end face adjusting screw 8 is used to adjust the disc height of the three output shaft assemblies to be consistent.

[0059] Radial adjusting set screw 9 is used to adjust the rotation centers of the three output shaft assemblies to be in the same plane and coplanar with the rotation center of the roller cam quadrature 12.

[0060] The output shaft assembly includes: a servo motor 6, a motor base 5, and a flange 1;

[0061] The bridge plate 4 is provided with three first mounting ports, and the upper end of the motor base 5 is installed in the first mounting ports;

[0062] The motor base 5 is provided with a second mounting port, and the flange 1 is mounted on the output shaft of the servo motor 6. The flange 1 is used to connect with external equipment.

[0063] The servo motor 6 is mounted on the motor base 5. The front end of the servo motor 6 is located at the second mounting port. The output shaft of the servo motor 6 passes through the second mounting port, and the end face of the flange 1 extends beyond the surface of the bridge plate 4.

[0064] A harmonic reducer 2 is also provided between the output shaft of the servo motor 6 and the flange 1. The output shaft of the servo motor 6 is connected to the input shaft of the harmonic reducer 2, and the flange 1 is installed on the output shaft of the harmonic reducer 2.

[0065] The motor base 5 is convex.

[0066] The end face adjusting screw 8 is used to install the motor base 5 on the lower side of the bridge plate 4 and to adjust the height of the flange 1.

[0067] The radial adjusting screw 9 is installed on the side of the bridge plate 4 and is used to adjust the rotation axis of the three flanges 1 to be in the same plane by adjusting the adjusting screw.

[0068] A skeleton oil seal 3 is also provided between the outer side of the motor base 5 and the inner side of the first mounting port.

[0069] The precision multi-axis output cradle has five axes and also includes a motor cover 7, which is installed on the underside of the bridge plate 4, and the servo motor 6 is located in the motor cover 7.

[0070] The adjustment accuracy of the end face adjusting screw 8 and the radial adjusting screw 9 is 0.01 mm, which is used to achieve consistency of multi-axis spatial position.

[0071] The principle of this utility model is as follows:

[0072] Core components and their functions

[0073] Bridge plate 4: As the main structural component, it is installed between the roller cam four-axis 12 and the tailstock 10. The rotation of the roller cam four-axis 12 drives the entire bridge plate 4 to rotate.

[0074] C-axis component 11: Contains three independent output axis assemblies, each mounted on bridge plate 4 and driven by its own servo motor 6. This allows the three output axes to operate independently, while also supporting collaborative work to complete complex machining tasks.

[0075] Face adjustment set screw 8 and radial adjustment set screw 9: used for fine adjustment of the position of each output shaft assembly. Face adjustment set screw 8 ensures that the disc height of the three output shaft assemblies is consistent; while radial adjustment set screw 9 ensures that the rotation centers of the three assemblies are located in the same plane and are coplanar with the rotation center of the roller cam quadcopter 12.

[0076] Specific composition of the output shaft assembly

[0077] Servo motor 6, motor base 5, and flange 1: The core of each output shaft assembly is the servo motor 6, which is fixed to the first mounting port on the bridge plate 4 via the motor base 5. The output shaft of the servo motor 6 passes through the second mounting port on the motor base 5 and is connected to the flange 1 via the harmonic reducer 2. The portion of the flange 1 extending beyond the surface of the bridge plate 4 is used for connection to external equipment or tools to achieve power transmission and operation execution.

[0078] Workflow

[0079] Initial position adjustment: First, use the end face adjusting screw 8 and radial adjusting screw 9 to precisely adjust the three output shaft assemblies to ensure that their disc heights are consistent and their rotation centers are coplanar, so as to achieve a high precision requirement of 0.01mm.

[0080] Power transmission: When the equipment is running, the servo motor 6 provides power, and its output shaft is reduced by the harmonic reducer 2 and then transmitted to the flange 1. The flange 1 then drives the external equipment or tools to rotate or perform other forms of operation.

[0081] Synchronization and Coordination: Since each output shaft assembly is independently controlled, the synchronous movement of the three can be achieved through programming or control systems, or different actions can be performed as needed to meet the requirements of complex machining tasks.

[0082] Stability and protection measures: The motor base 5 adopts a convex design, which helps to improve the stability of the overall structure; the skeleton oil seal 3 prevents lubricating oil leakage and contaminant entry; the motor cover 7 provides additional physical protection for the servo motor 6. These designs together ensure the long-term reliable operation of the equipment.

[0083] In summary, this precision multi-axis output cradle with five axes achieves high-precision spatial position adjustment, efficient power transmission, and good stability and protection measures through its ingenious design, making it suitable for various high-precision manufacturing fields.

[0084] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent structural transformations made under the present utility model concept and based on the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A precision multi-axis output cradle with five axes, characterized in that, include: The bridge plate is installed between the roller cam four-axis and the tailstock. The roller cam four-axis is used to drive the bridge plate to rotate. The C-axis component includes three independent output shaft assemblies, which are mounted on the bridge plate and are driven by three servo motors respectively. The end face adjusting screw is used to adjust the disc height of the three output shaft assemblies to be consistent. The radial adjusting set screw is used to adjust the rotation centers of the three output shaft assemblies to be in the same plane and coplanar with the rotation centers of the four roller cam shafts.

2. The precision multi-axis output cradle with five axes according to claim 1, characterized in that: The output shaft assembly includes: a servo motor, a motor base, and a flange; The bridge plate is provided with three first mounting ports, and the upper end of the motor base is installed in the first mounting ports; The motor base is provided with a second mounting port, and the flange is mounted on the output shaft of the servo motor. The flange is used to connect with external equipment. The servo motor is mounted on a motor base, with its front end positioned at the second mounting port. The output shaft of the servo motor passes through the second mounting port, and the end face of the flange extends beyond the surface of the bridge plate.

3. The precision multi-axis output cradle with five axes according to claim 2, characterized in that: A harmonic reducer is also provided between the output shaft of the servo motor and the flange. The output shaft of the servo motor is connected to the input shaft of the harmonic reducer, and the flange is installed on the output shaft of the harmonic reducer.

4. The precision multi-axis output cradle with five axes according to claim 2, characterized in that: The motor base is convex.

5. The precision multi-axis output cradle with five axes according to claim 2, characterized in that: The end face adjusting screw is used to install the motor base on the lower side of the bridge plate and to adjust the height of the flange plate. The radial adjusting screw is installed on the side of the bridge plate and is used to adjust the rotation axis of the three flanges to be in the same plane by adjusting the adjusting screw.

6. The precision multi-axis output cradle with five axes according to claim 2, characterized in that: A skeleton oil seal is also provided between the outer side of the motor base and the inner side of the first mounting port.

7. The precision multi-axis output cradle with five axes according to claim 2, characterized in that: This precision multi-axis output cradle has five axes and also includes a motor housing, which is installed on the underside of the bridge plate, and the servo motor is located in the motor housing.

8. The precision multi-axis output cradle with five axes according to claim 1, characterized in that: The adjustment accuracy of the end face adjusting screw and the radial adjusting screw is 0.01mm, which is used to achieve consistency of multi-axis spatial position.