CN113146284A

CN113146284A - Five-axis cradle rotary table

Info

Publication number: CN113146284A
Application number: CN202110332228.0A
Authority: CN
Inventors: 颜炳姜; 朱小康; 李俊宏
Original assignee: Smartguy Intelligent Equipment Co ltd; Conprofe Technology Group Co Ltd
Current assignee: Smartguy Intelligent Equipment Co ltd; Conprofe Technology Group Co Ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-07-23
Also published as: WO2022205981A1

Abstract

The invention relates to a five-axis cradle turntable which comprises a bottom plate, a four-axis assembly, a tailstock main body and a five-axis assembly, wherein the five-axis assembly comprises a bridge plate, a rear cover, a five-axis motor, a first transmission mechanism, a five-axis rotating shaft, a second transmission mechanism, an encoder and a five-axis flange plate, the rear cover and the bridge plate jointly enclose a containing cavity, the five-axis motor, the first transmission mechanism, the second transmission mechanism and the encoder are all positioned in the containing cavity, the encoder is detachably arranged on the second transmission mechanism, the encoder and the five-axis motor are arranged in a staggered mode, and the distribution conditions of the five-axis motor, the first transmission mechanism, the second transmission mechanism and the encoder in the X-axis direction are reasonably arranged, so that the height of the whole five-axis assembly in the Z-axis direction is reduced, and the height of the five-axis flange plate is reduced; the encoder and the five-axis motor are separately arranged, the encoder is detachably arranged on the second transmission mechanism, and encoders with different protocols can be replaced according to customer requirements, so that linkage of the five-axis cradle turntable and a machine tool is realized, and universality of the five-axis cradle turntable is improved.

Description

Five-axis cradle rotary table

Technical Field

The invention relates to the technical field of rotary tables, in particular to a five-axis cradle rotary table.

Background

A five-axis cradle turntable is one of numerical control turntables and belongs to a common part for machine tool machining. The rotating shaft rotating around the X axis is defined as an A axis, the rotating shaft rotating around the Z axis is defined as a C axis, and the five-axis cradle turntable is fixed on the workpiece on the output flange plate through the combination of the A axis and the C axis and can meet the machining requirements.

According to the traditional five-axis cradle turntable, because an integrated servo motor (a coder is integrated on the motor) is adopted in a five-axis assembly, the height of the integrated servo motor in the C-axis direction (Z direction) is large, and after a workpiece is placed on the five-axis cradle turntable, the whole center is lifted upwards, but because the Z direction stroke of a machine tool is fixed, if the center height of the five-axis cradle turntable is high, the five-axis cradle turntable can only be suitable for the machine tool with the high Z direction stroke, and the universality of the five-axis turntable is reduced. Moreover, if the encoder is integrated with the motor, the linkage of the five-axis cradle turntable and the machine tool cannot be realized when different systems of different machine tools are met, and the universality of the five-axis turntable is also reduced.

Disclosure of Invention

In view of the above, there is a need to provide a five-axis cradle turntable that can reduce the height of the output flange and can replace encoders of different protocols to improve versatility.

A five-axis cradle turntable comprising:

a base plate;

the four-axis assembly is arranged on the bottom plate;

the tailstock body is arranged on the bottom plate and is opposite to the four-axis assembly at intervals; and

the five-shaft assembly comprises a bridge plate, a rear cover, a five-shaft motor, a first transmission mechanism, a five-shaft rotating shaft, a second transmission mechanism, a coder and a five-shaft flange plate, wherein the two opposite ends of the bridge plate are arranged on the four-shaft assembly and the tailstock body, the bridge plate can swing relative to the bottom plate, the rear cover is arranged at the bottom of the bridge plate, the rear cover and the bridge plate jointly enclose a containing cavity, the five-shaft motor, the first transmission mechanism, the second transmission mechanism and the coder are all positioned in the containing cavity, one end of the five-shaft rotating shaft is positioned in the containing cavity, the other end of the five-shaft rotating shaft extends out of the bridge plate, the five-shaft flange plate is arranged at the end of the bridge plate, the five-shaft motor drives the five-shaft rotating shaft to rotate through the first transmission mechanism, and the five-shaft rotating shaft further drives the second transmission mechanism to move, the encoder is detachably arranged on the second transmission mechanism, and the encoder and the five-axis motor are arranged in a staggered mode.

In one embodiment, the first transmission mechanism includes a first driving wheel, a first synchronous belt and a first driven wheel, the first driving wheel is disposed at an output end of the five-axis motor, the first driven wheel is disposed on the five-axis rotating shaft, the first driving wheel drives the first driven wheel to rotate through the first synchronous belt, the second transmission mechanism includes a second driving wheel, a second synchronous belt and a second driven wheel, the second driving wheel is disposed on the five-axis rotating shaft, the second driven wheel is rotatably disposed in the accommodating cavity, the second driving wheel drives the second driven wheel to rotate through the second synchronous belt, and the encoder is disposed on the second driven wheel.

In one embodiment, the first driven wheel and the second driving wheel are concentrically sleeved outside the five-axis rotating shaft, and the second driving wheel is located above the first driven wheel.

In one embodiment, a supporting block is arranged in the accommodating cavity, the supporting block is arranged at the bottom of the bridge plate, and the second driven wheel is rotatably arranged at the bottom of the bridge plate through the supporting block.

In one embodiment, the diameter of the secondary driven wheel is smaller than the diameter of the secondary drive wheel.

In one embodiment, the reduction ratio of the second driving wheel to the second driven wheel is 1: 2.

in one embodiment, the five-axis rotating shaft is hollow.

In one embodiment, the bridge plate is an integrated bridge plate, one end of the bridge plate is swingably arranged on the tailstock body through a swing flange, and the other end of the bridge plate is swingably arranged on the four-shaft body through a four-shaft flange.

The five-axis cradle turntable at least has the following advantages:

the rear cover and the bridge plate together enclose a containing cavity, the five-axis motor, the first transmission mechanism, the second transmission mechanism and the encoder are all positioned in the containing cavity, one end of the five-axis rotating shaft is positioned in the containing cavity, the other end of the five-axis rotating shaft extends out of the bridge plate, the five-axis flange plate is arranged at the end of the five-axis rotating shaft extending out of the bridge plate, the five-axis motor drives the five-axis rotating shaft to rotate through the first transmission mechanism, the five-axis rotating shaft further drives the second transmission mechanism to move, the encoder is detachably arranged on the second transmission mechanism, and the encoder and the five-axis motor are arranged in a staggered manner, therefore, the encoder and the five-axis motor are not integrally arranged but are separately and staggeredly arranged, therefore, the distribution condition of the five-axis motor, the first transmission mechanism, the second transmission mechanism and the encoder in the X-axis direction is reasonably arranged, the height of the whole five-axis assembly in the Z-axis direction is reduced, and the height of the five-axis flange plate is further reduced; the encoder and the five-axis motor are separately arranged, and the encoder is detachably arranged on the second transmission mechanism, so that when different systems of different machine tools of customers are responded, the encoders with different protocols can be replaced according to the requirements of the customers, linkage between the five-axis cradle rotary table and the machine tools is realized, and the universality of the five-axis cradle rotary table is improved.

Drawings

FIG. 1 is a schematic structural view of a five-axis cradle turntable according to an embodiment;

FIG. 2 is a perspective cross-sectional view of FIG. 1;

fig. 3 is a partial schematic view of fig. 2.

In the figure, 10, five-axis cradle rotating tables; 100. a base plate; 200. a four-axis assembly; 300. a tailstock body; 400. a five-axis assembly; 410. a bridge plate; 420. a rear cover; 430. a five-axis motor; 440. a first transmission mechanism; 450. a five-axis rotating shaft; 460. a second transmission mechanism; 470. an encoder; 480. a five-axis flange plate; 441. a first drive wheel; 442. a first synchronization belt; 443. a first driven wheel; 461. a second drive wheel; 462. a second synchronous belt; 463. a second driven wheel; 490. a support block; 210. a four-axis body; 220. a four-axis rear cover; 230. a four-axis motor; 240. a four-axis rotating shaft; 250. a four-axis flange plate; 260. an RV reducer; 310. and (4) swinging the flange plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

Referring to fig. 1 and 2, a five-axis cradle turntable 10 according to an embodiment includes a bottom plate 100, a four-axis assembly 200, a tailstock body 300, and a five-axis assembly 400, and the five-axis cradle turntable 10 according to the embodiment can at least reduce the height of a five-axis flange, thereby reducing the center height of a workpiece and improving the universality of the five-axis cradle turntable 10. And can also correspond to different systems of different machine tools, and change encoders of different protocols to realize the linkage of the five-axis cradle rotary table 10 and the machine tool.

Specifically, the base plate 100 has a substantially plate-like structure. The four-axis assembly 200 is disposed on the base plate 100, for example, the four-axis assembly 200 may be mounted on the base plate 100 by screws. The tailstock body 300 is disposed on the bottom plate 100 and is spaced apart from and opposite to the four-axis assembly 200. Specifically, the tailstock body 300 may be mounted on the base plate 100 by screws, and a space is formed between the tailstock body 300 and the four-axis assembly 200, and the five-axis assembly 400 is located in the space.

Referring to fig. 3, the five-axis assembly 400 includes a bridge plate 410, a rear cover 420, a five-axis motor 430, a first transmission mechanism 440, a five-axis rotation shaft 450, a second transmission mechanism 460, an encoder 470, and a five-axis flange 480, wherein opposite ends of the bridge plate 410 are mounted on the four-axis assembly 200 and the tailstock body 300, and the bridge plate 410 is swingable relative to the base plate 100. That is, the bridge plate 410 may swing with respect to the base plate 100 by the four-shaft assembly 200. In the present embodiment, the bridge plate 410 is an integrated bridge plate 410, and the integrated bridge plate 410 has better rigidity.

The rear cover 420 covers the bottom of the bridge plate 410, the rear cover 420 and the bridge plate 410 together enclose an accommodating cavity, and the five-axis motor 430, the first transmission mechanism 440, the second transmission mechanism 460 and the encoder 470 are located in the accommodating cavity. Therefore, the five-axis motor 430, the first transmission mechanism 440 and the second transmission mechanism 460 can be protected from being polluted by outside moisture and impurities, and the phenomenon that the five-axis motor 430 is exposed out of the bridge plate 410 to interfere with a spindle of a machine tool can be prevented.

One end of the five-axis rotating shaft 450 is located in the accommodating cavity, the other end of the five-axis rotating shaft extends out of the bridge plate 410, the five-axis flange 480 is installed at the end, extending out of the bridge plate 410, of the five-axis rotating shaft 450, and the five-axis flange 480 rotates along with the rotation of the five-axis rotating shaft 450. The five-axis shaft 450 is hollow, so that internal circuits can be conveniently led out.

The five-axis motor 430 drives the five-axis rotating shaft 450 to rotate through the first transmission mechanism 440, the five-axis rotating shaft 450 further drives the second transmission mechanism 460 to move, the encoder 470 is detachably arranged on the second transmission mechanism 460, and the encoder 470 and the five-axis motor 430 are arranged in a staggered mode.

Therefore, the encoder 470 and the five-axis motor 430 are not integrally formed but are separately and staggeredly arranged, so that the distribution condition of the five-axis motor 430, the first transmission mechanism 440, the second transmission mechanism 460 and the encoder 470 in the X-axis direction is reasonably arranged to reduce the height of the whole five-axis assembly 400 in the Z-axis direction, and further reduce the height of the five-axis flange 480, when a workpiece is placed on the five-axis flange 480, the center height of the workpiece is also reduced, so that the five-axis five; and the encoder 470 and the five-axis motor 430 are separately arranged, and the encoder 470 is detachably arranged on the second transmission mechanism 460, so that when different systems of different machine tools of customers are met, the encoders 470 with different protocols can be replaced according to the requirements of the customers, the linkage of the five-axis cradle turntable 10 and the machine tools is realized, and the universality of the five-axis cradle turntable 10 is improved.

Specifically, in the present embodiment, the first transmission mechanism 440 includes a first driving wheel 441, a first synchronous belt 442 and a first driven wheel 443, the first driving wheel 441 is disposed at an output end of the five-axis motor 430, the first driven wheel 443 is disposed on the five-axis rotating shaft 450, and the first driving wheel 441 drives the first driven wheel 443 to rotate through the first synchronous belt 442. Therefore, the first transmission mechanism 440 has a simple structure, has low requirements on the capability of assembly personnel, and is beneficial to improving the assembly efficiency. The second transmission mechanism 460 includes a second driving wheel 461, a second synchronous belt 462 and a second driven wheel 463, the second driving wheel 461 is disposed on the five-axis rotating shaft 450, the second driven wheel 463 is rotatably disposed in the accommodating cavity, the second driving wheel 461 drives the second driven wheel 463 to rotate through the second synchronous belt 462, and the encoder 470 is disposed on the second driven wheel 463. That is, the second driving wheel 461 rotates along with the rotation of the five-axis rotating shaft 450. Similarly, the second transmission mechanism 460 has a simple structure, which is beneficial to improving the assembly efficiency.

Of course, in other embodiments, the first transmission mechanism may include a first driving gear and a first driven gear, and the first driving gear and the first driven gear are engaged with each other.

Further, in the present embodiment, the first driven wheel 443 and the second driven wheel 463 are concentrically sleeved outside the five-axis rotating shaft 450, and the second driving wheel 461 is located above the first driven wheel 443. Thus, when the first driven wheel 443 is driven by the first driving wheel 441 to rotate, the five-axis rotating shaft 450 is driven to rotate, and the second driving wheel 461 is driven to rotate. The second driving wheel 461 is located above the first driven wheel 443, correspondingly, the second synchronous belt 462 is located obliquely above the first synchronous belt 442, the second driven wheel 463 is also higher than the first driving wheel 441 and the first driven wheel 443 and is completely staggered with the first driving wheel 441 and the second driving wheel 461, and the encoder 470 can be disposed below the second driven wheel 463, so as to reasonably utilize the space in the X-axis direction in the accommodating cavity, and reduce the overall height of the five-axis assembly 400 in the Z-axis direction.

Further, in the present embodiment, a supporting block 490 is disposed in the receiving cavity, the supporting block 490 is disposed at the bottom of the bridge plate 410, and the second driven wheel 463 is rotatably disposed at the bottom of the bridge plate 410 through the supporting block 490. The support block 490 is primarily used to provide mounting support for the second driven wheel 463.

Further, the diameter of the second driven wheel 463 is smaller than that of the second driving wheel 461, so that the transmission accuracy can be improved when the encoder 470 is mounted on the second driven wheel 463. For example, the reduction ratio between the second driving wheel 461 and the second driven wheel 463 is 1: 2, i.e., the diameter of the second driving wheel 461 is twice the diameter of the second driven wheel 463, the transmission accuracy can be improved when the encoder 470 is mounted on the second driven wheel 463.

Referring to fig. 2 again, the four-axis assembly 200 includes a four-axis main body 210, a four-axis rear cover 220, a four-axis motor 230, a four-axis rotating shaft 240 and a four-axis flange 250, the four-axis main body 210 is mounted on the bottom plate 100 through a positioning key, the four-axis rear cover 220 covers one side of the four-axis main body 210, and the four-axis motor 230 is sealed in the four-axis rear cover 220. The four-axis motor 230 is used for driving the four-axis rotating shaft 240 to rotate, and the four-axis flange 250 is arranged on the four-axis rotating shaft 240.

Further, an RV reducer 260 is further arranged between the four-axis motor 230 and the four-axis flange 250, the four-axis rotating shaft 240 is a gear shaft, and the four-axis assembly 200 is light in weight and good in rigidity due to the adoption of the RV reducer 260.

Further, the tailstock body 300 is further provided with a swing flange 310, one end of the bridge plate 410 is swingably provided on the tailstock body 300 via the swing flange 310, and the other end of the bridge plate 410 is swingably provided on the four-axis body 210 via the four-axis flange 250. The four-axis motor 230 drives the four-axis rotating shaft 240 to rotate, the four-axis rotating shaft 240 drives the four-axis flange 250 to rotate, one end of the bridge plate 410 is mounted on the swinging flange 310, and the other end of the bridge plate is mounted on the four-axis flange 250, so that when the four-axis flange 250 is driven by the four-axis rotating shaft 240 to rotate, the four-axis flange 250 is driven to rotate, the bridge plate 410 is driven to swing, and the bridge plate 410 swings to drive the five-axis assembly 400 to swing integrally relative to the bottom plate 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A five-axis cradle turntable, comprising:

a base plate;

the four-axis assembly is arranged on the bottom plate;

2. The five-axis cradle turntable according to claim 1, wherein the first transmission mechanism comprises a first driving wheel, a first synchronous belt and a first driven wheel, the first driving wheel is disposed at an output end of the five-axis motor, the first driven wheel is disposed on the five-axis rotating shaft, the first driving wheel drives the first driven wheel to rotate through the first synchronous belt, the second transmission mechanism comprises a second driving wheel, a second synchronous belt and a second driven wheel, the second driving wheel is disposed on the five-axis rotating shaft, the second driven wheel is rotatably disposed in the accommodating cavity, the second driving wheel drives the second driven wheel to rotate through the second synchronous belt, and the encoder is disposed on the second driven wheel.

3. The five-axis cradle turntable according to claim 2, wherein the first driven wheel and the second driving wheel are concentrically sleeved outside the five-axis rotating shaft, and the second driving wheel is located above the first driven wheel.

4. The five-axis cradle turntable according to claim 3, wherein a support block is arranged in the accommodating cavity, the support block is arranged at the bottom of the bridge plate, and the second driven wheel is rotatably arranged at the bottom of the bridge plate through the support block.

5. The five-axis cradle turntable of claim 2, wherein the diameter of the secondary driven wheel is less than the diameter of the secondary drive wheel.

6. The five-axis cradle turntable of claim 5, wherein the reduction ratio of the second drive wheel to the second driven wheel is 1: 2.

7. the five-axis cradle turntable of claim 1, wherein the five-axis rotating shaft is hollow.

8. The five-axis cradle turntable according to claim 1, wherein the bridge plate is an integral bridge plate, one end of the bridge plate is swingably arranged on the tailstock body through a swing flange, and the other end of the bridge plate is swingably arranged on the four-axis body through a four-axis flange.