Direct-drive five-axis cradle rotary table

Abstract

The utility model discloses a direct-drive five-axis cradle rotary table which comprises a tail shaft sleeve piece, a fifth-axis workbench sleeve piece and a fourth shaft sleeve piece, and the fourth shaft sleeve piece comprises a transmission shaft, a fourth-axis driving system used for driving the transmission shaft to rotate and a fourth-axis braking system used for braking the transmission shaft. The fifth shaft workbench suite comprises a cradle, a workbench rotating shaft installed on the cradle, a fifth shaft driving system installed on the cradle and used for driving the workbench rotating shaft to rotate, and a fifth shaft braking system used for braking the workbench rotating shaft. By means of a free driving system and a free braking system of the fourth shaft sleeve piece and the fifth shaft workbench sleeve piece, the transmission precision and the positioning precision can be guaranteed, high-performance positioning and orientation are achieved, and the limitation of the traditional technology is overcome; and a solution with higher precision, higher dynamic performance and higher reliability is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining and manufacturing of machine tools, in particular to a direct-drive five-axis cradle turntable. Background Art

[0002] Traditional rotary and tilt stages typically use gear or belt drives for positioning and control. However, these traditional drive systems suffer from mechanical backlash, friction, and precision limitations that restrict their performance in high-precision and high-dynamic applications. Furthermore, gear and belt drives often require complex maintenance and regular calibration to maintain performance. With the development of direct-drive technology, mechanical engineers have begun to adopt direct-drive motors as an alternative to traditional drive systems. By connecting directly to the turntable axis, direct-drive motors eliminate transmission elements, thereby improving positioning accuracy, dynamic performance, and reliability. This technology has been widely used in a variety of applications, but for multi-degree-of-freedom motion control, especially for five-axis cradle turntables, more complex engineering solutions are required. Utility Model Content

[0003] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a direct-drive five-axis cradle turntable for CNC machining, which overcomes the limitations of traditional technology by achieving high-performance positioning and orientation through direct drive motors and advanced control systems, and provides higher precision, higher dynamic performance and more reliable solutions.

[0004] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0005] The cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft by the fourth axis driving system, and the cam is connected to the transmission shaft

[0006] The fourth shaft drive system includes a fourth shaft turntable bearing, a fourth shaft stator, a fourth shaft water jacket, a fourth shaft rotor, a fourth shaft housing and a fourth shaft rear seat. The fourth shaft rear seat is installed at the rear end of the fourth shaft housing. The fourth shaft stator is installed in the fourth shaft housing through the fourth shaft water jacket. The fourth shaft rotor is rotatably installed in the fourth shaft stator. The transmission shaft is installed at the front end of the fourth shaft water jacket through the fourth shaft turntable bearing, and the transmission shaft is fixed to the fourth shaft rotor.

[0007] The fourth shaft brake system includes a fourth shaft brake pressure cover, a fourth shaft brake pad and a fourth shaft brake piston. A brake surface is provided radially of the transmission shaft. The brake pad is installed on one side of the brake surface. The fourth shaft water jacket is provided with a fourth shaft pressure chamber connected to external oil corresponding to the brake surface. The fourth shaft brake piston is provided in the pressure chamber. The fourth shaft brake pressure cover is installed on the end face of the fourth shaft water jacket and contacts the fourth shaft brake pad and the fourth shaft brake piston respectively. The fourth shaft brake piston pushes the fourth shaft brake pressure cover to separate from the fourth shaft brake pad.

[0008] The fourth shaft brake pressure cover includes a main body and a pressure ring connected to the main body as a whole, and the pressure ring is in contact with the brake piston and the brake pad respectively.

[0009] The fifth-axis drive system includes a fifth-axis turntable bearing, a fifth-axis stator, a fifth-axis stator water jacket and a fifth-axis rotor. The fifth-axis stator is installed in the cradle through the fifth-axis water jacket. The fifth-axis rotor is rotatably installed in the fifth-axis stator. The worktable shaft is installed at the front end of the fifth-axis water jacket through the fifth-axis turntable bearing, and the worktable shaft is fixed to the fifth-axis rotor.

[0010] The fifth-axis brake system includes a fifth-axis brake cover, a fifth-axis brake pad and a fifth-axis brake piston. The worktable rotating shaft is radially provided with a fifth-axis brake surface. The fifth-axis brake pad is installed on one side of the fifth-axis brake surface. The fifth-axis water jacket is provided with a fifth-axis pressure chamber connected to the external oil corresponding to the fifth-axis brake surface. The fifth-axis brake piston is arranged in the pressure chamber shown. The fifth-axis brake cover is installed on the end face of the fifth-axis water jacket and contacts with the fifth-axis brake pad and the fifth-axis brake piston respectively. The fifth-axis brake cover is pushed away from the fifth-axis brake pad by the fifth-axis brake piston.

[0011] The fifth shaft brake cover includes a main body and a pressure ring connected to the main body as a whole, and the pressure ring is in contact with the brake piston and the brake pad respectively.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can ensure the transmission accuracy and positioning accuracy through the free drive system and brake system of the fourth-axis kit and the fifth-axis worktable kit, realize high-performance positioning and orientation, overcome the limitations of traditional technologies, and provide higher precision, higher dynamic performance and more reliable solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0015] Figure 1 It is a structural schematic diagram of the direct-drive five-axis cradle turntable in an embodiment of the present utility model. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0017] It should be noted that the terms used herein are intended solely to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. For example, the words "upper," "lower," "left," and "right" appearing in the present invention merely indicate the alignment of the upper, lower, left, and right directions with the accompanying drawings and do not limit the structure. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or component referred to must be oriented, constructed, or operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0018] Explanation of Terminology: Terms such as "installed," "connected," "connect," and "fixed" in this utility model should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integrated connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances. The direct-drive five-axis cradle turntable device of this utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] refer to Figure 1 , an example of a direct-drive five-axis cradle turntable, including: tail axis, fifth-axis worktable, and fourth axis. It uses direct drive motors and advanced control systems to achieve high-performance positioning and orientation, overcoming the limitations of traditional technologies and providing higher precision, higher dynamic performance, and more reliable solutions. Specifically:

[0020] A direct-drive five-axis cradle turntable, comprising a tail shaft kit 100, a fifth-axis workbench kit 200, and a fourth-axis kit 300, wherein the fourth-axis kit 300 comprises a transmission shaft 310, a fourth-axis drive system 320 for driving the transmission shaft 310 to rotate, and a fourth-axis brake system 330 for braking the transmission shaft 310, the tail shaft kit 100 comprises a support base 110 and a tail shaft axis 120 rotatably disposed transversely on the support base 110, the fifth-axis workbench kit 200 comprises a cradle 210, a workbench rotating shaft 220 mounted on the cradle 210, and a fourth-axis brake system 330 mounted on the cradle 210. 0 is used to drive the workbench shaft 220 to rotate, and the fifth-axis braking system 240 is used to brake the workbench shaft 220. The symmetrical ends of the cradle 220 are respectively connected to the transmission shaft 310 and the tail shaft axis 120. During operation, one end of the cradle 210 is supported by the tail shaft sleeve, and the other end is connected to the transmission shaft. The fourth-axis driving system 320 drives the transmission shaft 310 to rotate, thereby driving the fifth-axis working kit to rotate with the transmission shaft as the axis, and the fourth-axis car system brakes the fifth-axis workbench kit and positions it.

[0021] The fourth shaft drive system 320 includes a fourth shaft turntable bearing 321, a fourth shaft stator 322, a fourth shaft water jacket 323, a fourth shaft rotor 324, a fourth shaft housing 325 and a fourth shaft rear seat 326. The fourth shaft rear seat 326 is installed at the rear end of the fourth shaft housing 325. The fourth shaft stator 322 is installed in the fourth shaft housing 325 through the fourth shaft water jacket 323. The fourth shaft rotor 324 is rotatably installed in the fourth shaft stator 322. The transmission shaft 310 is installed at the front end of the fourth shaft water jacket 323 through the fourth shaft turntable bearing 321, and the transmission shaft 310 is fixed to the fourth shaft rotor 324. The stator is wound with a coil, and the winding method is a conventional technical means in this technical field, which will not be repeated here.

[0022] The fourth-shaft brake system 330 includes a fourth-shaft brake pressure cover 331, a fourth-shaft brake pad 332, and a fourth-shaft brake piston 333. A brake surface 310A is radially provided on the transmission shaft 310. The brake pad is mounted on one side of the brake surface 310A. The fourth-shaft water jacket 323 is provided with a fourth-shaft pressure chamber 323A connected to external oil corresponding to the brake surface 310. The fourth-shaft brake piston 333 is disposed in the pressure chamber 323A. The fourth-shaft brake pressure cover 331 is mounted on the end surface of the fourth-shaft water jacket 323 and contacts the fourth-shaft brake pad 332 and the fourth-shaft brake piston 333, respectively. The fourth-shaft brake piston pushes the fourth-shaft brake pressure cover away from the fourth-shaft brake pad. Specifically, when power is applied, external oil enters the fourth-shaft pressure chamber, causing the fourth-shaft brake piston to move upward, pushing the fourth-shaft brake pressure cover to deform away from the fourth-shaft brake pad. The brake changes from a clamped state to a released state, allowing the rotating shaft to rotate and perform relative motion.

[0023] In this embodiment, the fourth-axis brake pressure cover 331 includes a main body 331A and a pressure ring 331B connected to the main body 331A as a whole. The pressure ring contacts the brake piston and the brake pad respectively. The brake piston pushes the pressure ring away from the brake pad, thereby changing the brake from a clamped state to a loosened state, and the rotating shaft is allowed to rotate and perform relative movement.

[0024] The fifth-axis drive system 230 includes a fifth-axis turntable bearing 231, a fifth-axis stator 232, a fifth-axis stator water jacket 233 and a fifth-axis rotor 234. The fifth-axis stator 232 is installed in the cradle 210 through the fifth-axis water jacket 233. The fifth-axis rotor 324 is rotatably installed in the fifth-axis stator 232. The worktable shaft 220 is installed at the front end of the fifth-axis water jacket 233 through the fifth-axis turntable bearing 231, and the worktable shaft 220 is fixed to the fifth-axis rotor 234. The stator is wound with a coil, and the winding method is a conventional technical means in this technical field, which will not be repeated here.

[0025] The fifth-axis brake system 240 includes a fifth-axis brake pressure cover 241, a fifth-axis brake pad 242, and a fifth-axis brake piston 243. The worktable rotating shaft 220 is radially provided with a fifth-axis brake surface 220A. The fifth-axis brake pad is installed on one side of the fifth-axis brake surface 220. The fifth-axis water jacket 233 is provided with a fifth-axis pressure chamber 233A connected to external oil corresponding to the fifth-axis brake surface 220A. The fifth-axis brake piston 333 is disposed in the pressure chamber 323A. The fifth-axis brake pressure cover 241 is installed on the end surface of the fifth-axis water jacket 233 and contacts the fifth-axis brake pad 242 and the fifth-axis brake piston 243 respectively. The fifth-axis brake piston pushes the fifth-axis brake pressure cover to separate from the fifth-axis brake pad. Specifically, when power is turned on, external oil enters the fifth-axis pressure chamber, causing the fifth-axis brake piston to move upward, pushing the fifth-axis brake pressure cover to deform away from the fifth-axis brake pad. The brake changes from a clamped state to a released state, allowing the rotating shaft to rotate and perform relative motion.

[0026] In this embodiment, the fifth-axis brake pressure cover 241 includes a main body 241A and a pressure ring 241B connected to the main body 241 as a whole. The pressure ring contacts the brake piston and the brake pad respectively. The brake piston pushes the pressure ring away from the brake pad, thereby changing the brake from a clamped state to a loosened state, and the rotating shaft is allowed to rotate and perform relative movement.

[0027] What the present invention aims to achieve is that the free drive system and brake system of the fourth-axis kit and the fifth-axis worktable kit can ensure the transmission accuracy and positioning accuracy, realize high-performance positioning and orientation, overcome the limitations of traditional technologies, and provide higher precision, higher dynamic performance and more reliable solutions.

[0028] Finally, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this utility model shall be included in the scope of protection of this utility model. Although the above description of the specific embodiments of the utility model is combined with the accompanying drawings, it does not limit the scope of protection of this utility model. Those skilled in the art should understand that based on the technical solution of this utility model, various modifications or variations that can be made by those skilled in the art without expending creative effort are still within the scope of protection of this utility model.

Claims

1. A direct-drive five-axis cradle turntable, characterized by: It includes a tail shaft kit, a fifth-axis workbench kit and a fourth-axis kit, the fourth-axis kit includes a transmission shaft, a fourth-axis drive system for driving the transmission shaft to rotate, and a fourth-axis brake system for braking the transmission shaft, the tail shaft kit includes a support seat and a tail shaft axis rotatable and horizontally placed on the support seat, the fifth-axis workbench kit includes a cradle, a workbench rotating shaft installed on the cradle, a fifth-axis drive system installed on the cradle for driving the workbench rotating shaft to rotate, and a fifth-axis brake system for braking the workbench rotating shaft, one symmetrical end of the cradle is respectively connected to the transmission shaft and the tail shaft axis, one end of the cradle is supported by the tail shaft sleeve, and the other end is connected to the transmission shaft.

2. The direct-drive five-axis cradle turntable according to claim 1, characterized in that: The fourth shaft drive system includes a fourth shaft turntable bearing, a fourth shaft stator, a fourth shaft water jacket, a fourth shaft rotor, a fourth shaft housing and a fourth shaft rear seat. The fourth shaft rear seat is installed at the rear end of the fourth shaft housing. The fourth shaft stator is installed in the fourth shaft housing through the fourth shaft water jacket. The fourth shaft rotor is rotatably installed in the fourth shaft stator. The transmission shaft is installed at the front end of the fourth shaft water jacket through the fourth shaft turntable bearing, and the transmission shaft is fixed to the fourth shaft rotor.

3. The direct-drive five-axis cradle turntable according to claim 2, characterized in that: The fourth shaft brake system includes a fourth shaft brake pressure cover, a fourth shaft brake pad and a fourth shaft brake piston. A brake surface is provided radially of the transmission shaft. The brake pad is installed on one side of the brake surface. The fourth shaft water jacket is provided with a fourth shaft pressure chamber connected to external oil corresponding to the brake surface. The fourth shaft brake piston is provided in the pressure chamber. The fourth shaft brake pressure cover is installed on the end face of the fourth shaft water jacket and contacts the fourth shaft brake pad and the fourth shaft brake piston respectively. The fourth shaft brake piston pushes the fourth shaft brake pressure cover to separate from the fourth shaft brake pad.

4. The direct-drive five-axis cradle turntable according to claim 3, characterized in that: The fourth shaft brake cover includes a main body and a pressure ring connected to the main body as a whole, and the pressure ring is in contact with the brake piston and the brake pad respectively.

5. The direct-drive five-axis cradle turntable according to claim 3, characterized in that: The fifth-axis drive system includes a fifth-axis turntable bearing, a fifth-axis stator, a fifth-axis stator water jacket and a fifth-axis rotor. The fifth-axis stator is installed in the cradle through the fifth-axis water jacket. The fifth-axis rotor is rotatably installed in the fifth-axis stator. The worktable shaft is installed at the front end of the fifth-axis water jacket through the fifth-axis turntable bearing, and the worktable shaft is fixed to the fifth-axis rotor.

6. The direct-drive five-axis cradle turntable according to claim 5, characterized in that: The fifth-axis brake system includes a fifth-axis brake cover, a fifth-axis brake pad and a fifth-axis brake piston. The worktable rotating shaft is radially provided with a fifth-axis brake surface. The fifth-axis brake pad is installed on one side of the fifth-axis brake surface. The fifth-axis water jacket is provided with a fifth-axis pressure chamber connected to the external oil corresponding to the fifth-axis brake surface. The fifth-axis brake piston is arranged in the pressure chamber shown. The fifth-axis brake cover is installed on the end face of the fifth-axis water jacket and contacts with the fifth-axis brake pad and the fifth-axis brake piston respectively. The fifth-axis brake cover is pushed away from the fifth-axis brake pad by the fifth-axis brake piston.

7. The direct-drive five-axis cradle turntable according to claim 6, characterized in that: The fifth shaft brake cover includes a main body and a pressure ring connected to the main body as a whole, and the pressure ring is in contact with the brake piston and the brake pad respectively.

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