Direct-driven double-rotation precision motion device
By using a direct-drive dual-rotation precision motion device, high-precision positioning and braking are achieved through precision bearings and electro-hydraulic brakes. This solves the problems of offset and safety risks during the rotation of existing equipment, improves processing accuracy and efficiency, and is suitable for the field of precision manufacturing.
Patent Information
- Application Number
- CN202511699094.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-02-13
AI Technical Summary
The existing equipment lacks multi-stage precision bearings, which makes it prone to radial/axial misalignment during rotation, making it difficult to guarantee the geometric accuracy of long-term motion. Furthermore, during high-speed rotation or sudden power failure, the rotating shaft is prone to uncontrolled misalignment due to inertia, posing risks of damage to processed parts or equipment safety.
It adopts a direct-drive dual-rotation precision motion device, including a fixed base, a fixture transition plate, a side shifting plate, a sensing plate, and a signal feedback module. High-precision positioning and braking are achieved through precision bearings and electro-hydraulic brakes. Combined with a modular architecture and automatic pneumatic control, the signal transmission path is optimized to ensure accurate acquisition and feedback of electric shaft operation data.
It achieves fast dynamic response, high closed-loop control accuracy, compact structure and easy integration, and is suitable for high-precision clamping of precision thin-walled tubes and complex structural parts. It has ultra-precision positioning and detection capabilities and is applicable to micro-lithography technology and precision welding fields, improving processing efficiency and accuracy.
Smart Images
Figure CN121514922A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of precision intelligent manufacturing, and particularly relates to a direct-drive double-rotation precision motion device. BACKGROUND
[0002] With the evolution of global manufacturing towards the composite direction of "high precision, complex structure, demand individualization and material light weight", five-axis machining equipment is accelerating the penetration into multiple fields. Through the deep integration of digital twin, real-time process monitoring system and AI intelligent process optimization, this technology will continue to create significant process breakthroughs and value increments in strategic fields such as aerospace engine blade / cabin manufacturing, new energy vehicle battery components or integrated die casting machining, high-end medical implant personalized forming and precision mold complex cavity manufacturing.
[0003] At present, most of the existing equipment only adopts single-layer bearing or simple support structure, lacks multi-stage precision bearing, and is prone to radial / axial deviation during rotation, which is difficult to ensure the geometric precision of long-term motion, lacks active braking protection, and is prone to rotation shaft deviation due to inertia during high-speed rotation or sudden power failure, which may cause damage to the workpiece or safety risk of the equipment. SUMMARY
[0004] The present application aims to provide a direct-drive double-rotation precision motion device to solve the problems in the prior art.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a direct-drive double-rotation precision motion device, comprising a fixed base, a jig transition plate, a side displacement plate, an inductive sheet and a signal feedback module, one side of the fixed base is provided with a protective cover one, one side of the protective cover one is annularly provided with a heat dissipation hole, the upper side of the fixed base is provided with an isolation cover body, the upper side of the fixed base is provided with a rotating mechanism, the rotating mechanism rotates the side displacement plate through an electric shaft one, and then drives the jig transition plate to rotate and tilt through the side displacement plate, the other side of the side displacement plate is provided with a positioning mechanism, the positioning mechanism is positioned through a driven shaft arranged on one side, and the inductive sheet is further electrically connected with a plurality of signal feedback modules arranged in a buffering mode, the signal transmission path is optimized through the buffering mechanism to ensure accurate collection and feedback of the electric shaft operation data.
[0006] As a preferred technical scheme, the positioning mechanism comprises a jig transition plate, a side displacement plate, a protective cover two, a fastener, a driven shaft, a precision bearing and an electric hydraulic brake, the jig transition plate is arranged above the side displacement plate, one side of the side displacement plate is connected with the driven shaft, one side of the side displacement plate is connected with an electric shaft two, the outer side of the electric shaft two is provided with the protective cover two, the outer side of the protective cover two is connected with the fastener, the precision bearing is arranged in the protective cover two, the precision bearing is penetrated and connected with the driven shaft, and the electric hydraulic brake is arranged on one side of the driven shaft.
[0007] As a preferred technical scheme, one side of the side displacement plate is provided with the driven shaft, and the driven shaft is assembled in a key connection mode with the electric hydraulic brake.
[0008] As a preferred technical scheme, the bottom end of the jig transition plate is fixedly provided with the side displacement plate, and one side of the electric shaft two is rigidly connected with the side displacement plate through a flange plate.
[0009] As a preferred technical scheme, the rotating mechanism comprises a rotating shaft one, an electric shaft one, a spacer, a sensing sheet, an electric shaft two and a signal feedback module, the signal feedback module is arranged in the protective cover one, the protective cover one is provided with the sensing sheet, one side of the sensing sheet is connected with the electric shaft two, the rotating shaft one is arranged on the other side of the side displacement plate, the electric shaft two is arranged at the top end of the jig transition plate, and the spacer is arranged on the outer side of the driven shaft.
[0010] As a preferred technical scheme, the sensing sheet fixedly assembled at the tail end of the electric shaft two is electrically connected with a plurality of signal feedback modules through a shielding cable.
[0011] As a preferred technical scheme, the electric shaft one is connected with the other side of the side displacement plate through the rotating shaft one arranged on one side.
[0012] Compared with the prior art, the present application has the following advantages: 1. The direct drive type joint motion pair adopts a frictionless driving design, has the core characteristics of fast dynamic response and high closed-loop control precision, is based on a modular architecture, realizes standardization of mechanical, electrical and control interfaces, is compact in structure and easy to integrate and apply, and is provided with an automatic pneumatic control function precision rotating body clamping module, so that the radial runout is controlled in a very small range through optimization design, and the high motion precision and operation convenience are combined, and the present application is especially suitable for high-precision clamping scenes of precision thin-walled pipes, precision shaft parts or rod / rod instruments.
[0013] 2、The present application has a series of advantages such as no need for air source, high precision, stable performance, etc., and provides a work platform capable of realizing ultra-precision positioning, detection and accurate movement for micro-lithography technology, precision welding and other fields, but the precision shaft system needs to achieve nanometer-level precision, and needs to solve the problems of ultra-precision machining, precision assembly and adjustment, lubrication and the like of the shaft system; The complex curved surface part can be machined on multiple surfaces by one clamping, the machining precision is high, the surface quality is good, complex structural parts that cannot be machined by traditional machine tools can be machined, with the development of manufacturing industry towards high precision, high complexity, individualization and light weight, the five-axis machine tool will continue to penetrate into more fields, and will play a greater value in the fields of aerospace, automobile new energy, medical devices and mold manufacturing by combining digital machining technology, real-time monitoring and intelligent optimization. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present application; Figure 2 It is a schematic diagram of the overall side view structure of the present application; Figure 3 It is a schematic diagram of the rotating mechanism structure of the present application; Figure 4 It is a schematic diagram of the positioning mechanism structure of the present application; Figure 5 It is a schematic diagram of the connection structure of the side displacement plate and the jig transition plate of the present application.
[0015] Among them: 1, fixed base; 2, protective cover one; 3, heat dissipation hole; 4, isolation cover; 5, positioning mechanism; 6, jig transition plate; 7, side displacement plate; 8, protective cover two; 9, fastener; 10, rotating mechanism; 11, shaft one; 12, electric shaft one; 13, spacer; 14, inductive sheet; 15, driven shaft; 16, precision bearing; 17, electric hydraulic brake; 18, electric shaft two; 19, signal feedback module. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0017] Embodiment: as Figures 1 to 5As shown, the present application provides the following technical solutions, a direct drive type double rotation precision motion device, including fixed base 1, fixture transition plate 6, side displacement plate 7, inductive sheet 14 and signal feedback module 19, one side of the fixed base 1 is provided with protective cover one 2, one side of the protective cover one 2 is annularly provided with heat dissipation hole 3, the upper side of the fixed base 1 is provided with isolation cover body 4, the upper side of the fixed base 1 is provided with rotating mechanism 10, the rotating mechanism 10 rotates the side displacement plate 7 through the motor shaft one 12, and then drives the fixture transition plate 6 to rotate and tilt through the side displacement plate 7, the other side of the side displacement plate 7 is provided with positioning mechanism 5, the positioning mechanism 5 is positioned through the driven shaft 15 arranged on one side, and the inductive sheet 14 is further electrically connected with the plurality of signal feedback modules 19 arranged in buffer, the signal transmission path is optimized through the buffer mechanism, and the accurate collection and feedback of the motor shaft operation data are ensured.
[0018] As shown in Figure 1 , Figure 2 and Figure 3 , the positioning mechanism 5 includes the fixture transition plate 6, the side displacement plate 7, the protective cover two 8, the fastener 9, the driven shaft 15, the precision bearing 16 and the electric hydraulic brake 17, the fixture transition plate 6 is arranged above the side displacement plate 7, one side of the side displacement plate 7 is connected with the driven shaft 15, one side of the side displacement plate 7 is connected with the motor shaft two 18, the outer side of the motor shaft two 18 is provided with the protective cover two 8, the outer side of the protective cover two 8 is connected with the fastener 9, the precision bearing 16 is arranged in the protective cover two 8, the precision bearing 16 penetrates and is connected with the driven shaft 15, and the electric hydraulic brake 17 is installed on one side of the driven shaft 15; One side of the side displacement plate 7 is provided with the driven shaft 15, the driven shaft 15 and the electric hydraulic brake 17 are assembled in a key connection mode; The bottom end of the fixture transition plate 6 is fixedly installed with the side displacement plate 7, and one side of the side displacement plate 7 and the motor shaft two 18 are rigidly connected through the flange plate.
[0019] Among them: the motor shaft two 18 is rigidly connected with the side displacement plate 7 through the flange plate, drives the driven shaft 15 to rotate synchronously or transmits torque; the driven shaft 15 is assembled with the electric hydraulic brake 17 through key connection, brake braking torque is generated when the brake is powered on, so that the driven shaft 15 is quickly stopped and locked at the target position, the driven shaft 15 is installed in the protective cover two 8 through the precision bearing 16, the rotating friction and the radial runout are reduced, and the positioning accuracy is ensured.
[0020] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the rotating mechanism 10 comprises a rotating shaft 11, an electric shaft 12, a spacer 13, an induction sheet 14, an electric shaft 18 and a signal feedback module 19, the signal feedback module 19 is arranged in the inside of the protective cover 2, the inside of the protective cover 2 is provided with the induction sheet 14, one side of the induction sheet 14 is connected with the electric shaft 18, the rotating shaft 11 is arranged at the other side of the side transposition plate 7, the electric shaft 18 is arranged at the top end of the jig transition plate 6, and the spacer 13 is arranged at the outside of the driven shaft 15; the induction sheet 14 fixedly assembled at the tail end of the electric shaft 18 is electrically connected with a plurality of signal feedback modules 19 through a shield cable, and the electric shaft 12 is connected with the other side of the side transposition plate 7 through the rotating shaft 11 arranged at one side.
[0021] Among them: the induction sheet 14 is connected with the signal feedback module 19 through a shield cable, the buffer circuit such as photoelectric isolation inhibits electromagnetic interference, ensures the real-time and accuracy of the rotating position and speed data, and through the adjustment of the rotating angle of the electric shaft 12, the accurate transition of the jig transition plate 6 from the initial position to the target tilt angle can be realized, and the complex curved surface machining or assembly requirement can be adapted.
[0022] The working principle of the present application is: The control sends a starting instruction, usually an electrical signal, to the electric shaft 12 and the electric shaft 18 through a PLC or a servo driver, both shafts are direct-drive motors, when the device starts, the induction sheet 14 installed at the tail end of the electric shaft 18 cooperates with the signal feedback module 19 to detect the initial angle position of the electric shaft 18 and the driven shaft 15, which serves as the reference zero point for subsequent movement; The electric shaft 12 outputs torque, the electric shaft 12 control system sends the electric shaft 12 a speed and direction instruction according to the target angle, the rotor of the electric shaft 12 directly drives the rotating shaft 11 connected at one end to rotate, the rotating motion of the rotating shaft 11 is transmitted to the side transposition plate 7, so that the side transposition plate 7 rotates around its own rotating axis, usually perpendicular to the plane of the fixed base 1, to realize the main rotating degree of freedom, the jig transition plate 6 is fixedly installed at the bottom end of the side transposition plate 7, so the jig transition plate 6 rotates synchronously with the side transposition plate 7, and the workpiece and clamp thereon are rotated and inclined; The electric shaft 18 is fixedly assembled with the induction sheet 14 at the tail end rigidly connected with the side transposition plate 7, which functions to mark the current position of the driven shaft 15 or the side transposition plate 7 in real time, the induction sheet 14 rotates synchronously with the electric shaft 18, and the position signal is transmitted to the plurality of signal feedback modules 19 through a shield cable, one side of the driven shaft 15 is provided with an electric hydraulic brake 17, when electrified, the electromagnetic coil in the electric hydraulic brake 17 generates a magnetic field to drive the brake piston or friction plate to press the outer surface of the driven shaft 15, thereby generating a braking torque; When the side transposition plate 7 is rotated to the target angle, the position locking is realized through the positioning mechanism 5, the electric shaft two 18 and the side transposition plate 7 are rigidly connected through the flange plate to drive the driven shaft 15 to keep the synchronous state, the driven shaft 15 and the electric hydraulic brake 17 are assembled through the key connection, and the brake force is directly transmitted to the shaft body; at the same time, the driven shaft 15 is installed in the protective cover two 8 through the precision bearing 16, the rotating friction and the radial runout are reduced, and the heat dissipation hole 3 is annularly arranged on the fixed base 1, and the heat generated during the operation of the electric shaft two 18 is dissipated through air convection.
[0023] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiment, and that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and it is intended that all changes which come within the meaning and range of equivalency of the claims are embraced therein. No reference sign in the claims should be construed as limiting the claim being visited.
Claims
1. A direct-drive dual-rotation precision motion device, comprising a fixed base (1), a fixture transition plate (6), a side-positioning plate (7), a sensing plate (14), and a signal feedback module (19), characterized in that: A protective cover (2) is provided on one side of the fixed base (1). A heat dissipation hole (3) is provided on one side of the protective cover (2). An isolation cover (4) is provided directly above the fixed base (1). A rotating mechanism (10) is provided directly above the fixed base (1). The rotating mechanism (10) rotates the side shift plate (7) through an electric shaft (12), and then drives the fixture transition plate (6) to rotate and tilt through the side shift plate (7). A positioning mechanism (5) is provided on the other side of the side shift plate (7). The positioning mechanism (5) is positioned by a driven shaft (15) provided on one side. At the same time, the sensing plate (14) is further electrically connected to multiple signal feedback modules (19) with buffer settings. The signal transmission path is optimized through the buffer mechanism to ensure accurate acquisition and feedback of electric shaft operation data.
2. The direct-drive dual-rotation precision motion device according to claim 1, characterized in that: The positioning mechanism (5) includes a fixture transition plate (6), a side shift plate (7), a second protective cover (8), a fastener (9), a driven shaft (15), a precision bearing (16), and an electro-hydraulic brake (17). The fixture transition plate (6) is located above the side shift plate (7). The driven shaft (15) is connected to one side of the side shift plate (7). The second electric shaft (18) is connected to one side of the side shift plate (7). The second protective cover (8) is installed on the outside of the second electric shaft (18). The fastener (9) is connected to the outside of the second protective cover (8). The precision bearing (16) is located inside the second protective cover (8). The precision bearing (16) is connected through the driven shaft (15). The electro-hydraulic brake (17) is installed on one side of the driven shaft (15).
3. The direct-drive dual-rotation precision motion device according to claim 2, characterized in that: A driven shaft (15) is provided on one side of the side shift plate (7), and the driven shaft (15) is assembled with the electro-hydraulic brake (17) by a key connection.
4. The direct-drive dual-rotation precision motion device according to claim 2, characterized in that: The bottom end of the fixture transition plate (6) is fixedly installed with a side shift plate (7), and the side shift plate (7) is rigidly connected to one side of the electric shaft (18) through a flange.
5. The direct-drive dual-rotation precision motion device according to claim 1, characterized in that: The rotating mechanism (10) includes a rotating shaft (11), an electric shaft (12), a spacer (13), a sensor (14), an electric shaft (18), and a signal feedback module (19). The signal feedback module (19) is located inside the protective cover (2).
6. The direct-drive dual-rotation precision motion device according to claim 5, characterized in that: The protective cover (2) is provided with an induction plate (14) inside, and an electric shaft (18) is connected to one side of the induction plate (14).
7. The direct-drive dual-rotation precision motion device according to claim 6, characterized in that: The first rotating shaft (11) is located on the other side of the side shift plate (7), the second electric shaft (18) is located at the top of the fixture transition plate (6), and the spacer (13) is located on the outside of the driven shaft (15).
8. The direct-drive dual-rotation precision motion device according to claim 7, characterized in that: The sensor plate (14) fixedly mounted at the tail end of the electric shaft (18) is electrically connected to multiple signal feedback modules (19) through shielded cables.
9. A direct-drive dual-rotation precision motion device according to claim 8, characterized in that: The electric shaft (12) is connected to the other side of the side shift plate (7) via a rotating shaft (11) provided on one side.