阅读说明：本技术 伺服旋转中空平台的输出端结构 (Output end structure of servo rotary hollow platform ) 是由 郑志仪 任国华 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种伺服旋转中空平台的输出端结构,包括箱体以及安装在箱体上的输出端,所述输出端包括连接轴和交叉滚子轴承,所述连接轴转动连接在箱体内,所述连接轴具有一凸起的安装部,所述交叉滚子轴承的外圈固定连接在箱体上,内圈套设在连接轴上并与连接部固定连接,所述安装部的下端固定安装有齿轮盘,所述齿轮盘转动带动连接轴使内圈相对外圈转动。通过上述方式,本发明伺服旋转中空平台的输出端结构,能够提高输出传递精度、传递刚性以及传递稳定性。(The invention discloses an output end structure of a servo rotary hollow platform, which comprises a box body and an output end arranged on the box body, wherein the output end comprises a connecting shaft and a crossed roller bearing, the connecting shaft is rotatably connected in the box body and is provided with a raised mounting part, the outer ring of the crossed roller bearing is fixedly connected on the box body, an inner ring is sleeved on the connecting shaft and is fixedly connected with the connecting part, the lower end of the mounting part is fixedly provided with a gear disc, and the gear disc rotates to drive the connecting shaft to enable the inner ring to rotate relative to the outer ring. Through the mode, the output end structure of the servo rotary hollow platform can improve the output transmission precision, the transmission rigidity and the transmission stability.)

1. The utility model provides a servo rotatory cavity platform's output structure, includes the box and installs the output on the box, its characterized in that, the output includes connecting axle and cross roller bearing, the connecting axle rotates to be connected in the box, the connecting axle has a bellied installation department, cross roller bearing's outer lane fixed connection is on the box, and the inner circle cover is established on the connecting axle and with connecting portion fixed connection, the lower extreme fixed mounting of installation department has the toothed disc, the toothed disc rotates and drives the connecting axle and make the relative outer lane of inner circle rotate.

2. The output end structure of the servo rotary hollow platform of claim 1, wherein the gear disc, the mounting portion and the inner ring are fastened together by a plurality of bolts.

3. The output end structure of the servo rotary hollow platform of claim 2, wherein the mounting portion is an annular boss structure.

4. The output end structure of the servo rotary hollow platform as claimed in claim 3, wherein the lower end of the connecting shaft is rotatably connected in the case by deep groove ball bearings.

5. An output end structure of a servo rotary hollow platform according to any of claims 1 to 4, wherein the gear disc has a face gear on its bottom surface, the face gear being in mesh with an input shaft gear, the input shaft gear being mounted on the input shaft.

Technical Field

The invention relates to the field of rotary hollow platforms, in particular to an output end structure of a servo rotary hollow platform.

Background

The rotary hollow platform is mainly used for various rotary motion occasions such as a numerical control indexing device, a manipulator joint, a fourth machining shaft of a machine tool, a military radar, an automatic production line and the like, can replace a direct drive motor and a cam divider, integrates high working efficiency, high precision, high rigidity and high cost performance into a whole, is a revolutionary product in a rotary motion mechanism, is balanced between the two, has repeated positioning precision of less than or equal to 5 seconds, is easy to prepare a motor, is stable in bearing weight, can be matched with an AC servo motor or a stepping motor to perform arbitrary angle division, can meet the digital control which cannot be achieved by the divider, can match the positioning precision with a DD motor, and can greatly reduce the cost.

The output end of the existing rotary hollow platform usually adopts a tapered roller bearing, and the precision, rigidity and stability of the tapered roller bearing can not meet the use requirements.

Disclosure of Invention

The invention mainly solves the technical problem of providing an output end structure of a servo rotary hollow platform, which can improve the output transmission precision, the transmission rigidity and the transmission stability.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a servo rotatory cavity platform's output structure, includes the box and installs the output on the box, the output includes connecting axle and cross roller bearing, the connecting axle rotates to be connected in the box, the connecting axle has a bellied installation department, cross roller bearing's outer lane fixed connection is on the box, the inner circle cover establish on the connecting axle and with connecting portion fixed connection, the lower extreme fixed mounting of installation department has the toothed disc, the toothed disc rotates and drives the relative outer lane of connecting axle messenger inner circle and rotate.

In a preferred embodiment of the invention, the gear disc, the mounting portion and the inner ring are tightly connected through a plurality of bolts.

In a preferred embodiment of the present invention, the mounting portion is an annular protrusion structure.

In a preferred embodiment of the invention, the lower end of the connecting shaft is rotatably connected in the case through a deep groove ball bearing.

In a preferred embodiment of the invention, the gear plate has a face gear on its bottom surface, which is in mesh with an input shaft gear mounted on the input shaft.

The invention has the beneficial effects that: the output end structure of the servo rotary hollow platform can improve the output transmission precision, the transmission rigidity and the transmission stability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural view of a servo rotary hollow platen according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a schematic view of a portion of the structure of FIG. 1;

the parts in the drawings are numbered as follows: 1. the device comprises a box body, 2, a connecting shaft, 21, a mounting part, 3, a gear disc, 31, a face gear, 4, an input shaft, 5, an input shaft gear, 6, a crossed roller bearing, 61, an outer ring, 62, an inner ring, 7, a first bearing, 8, a framework oil seal, 9, a connecting flange, 10, a second bearing, 11, a clamping clamp, 12, a cylindrical pin, 13, an adjusting screw, 14, a bolt, 15, a transition flange, 16 and a mounting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, a servo rotary hollow platform includes a box 1, a connecting shaft 2 is rotatably connected in the box 1, a gear plate 3 is installed on the circumference of the connecting shaft 2, a face gear 31 is installed on the bottom surface of the gear plate 3, an input shaft 4 is installed on the box 1, an input shaft gear 5 is connected to the front end of the input shaft 4, and the input shaft gear 5 and the face gear 31 are engaged to form a face gear transmission structure.

In addition, the input shaft gear 5 and the gear disc 3 are in vertical meshing transmission, and the input shaft gear 5 is a cylindrical gear. The meshing structure has axial assembly freedom degree, is less sensitive to assembly errors, is easier for tooth profile trimming and backlash adjustment, and has higher contact rate.

In addition, the connecting shaft 2 is arranged in the box body 1 along the longitudinal direction, and the input shaft 4 is connected to the box body 1 along the transverse direction.

In addition, the housing 1 is provided with a cross roller bearing 6, an outer ring 61 of the cross roller bearing 6 is fixedly connected to the housing, and an inner ring 62 is integrally connected to the connecting shaft 2 and the gear plate 3. The connecting shaft 2 is provided with a raised mounting part 21, the inner ring of the crossed roller bearing 6 is sleeved on the connecting shaft, the inner ring 62 is fixedly connected to the upper end of the mounting part 21, and the gear disc 3 is fixedly mounted at the lower end of the mounting part 21. The inner race 62 of the cross roller bearing 6, the mounting portion 21, and the gear plate 3 are integrally connected by bolts 14. The crossed roller bearing 6 is used as an output end, and compared with the traditional tapered roller bearing, the output transmission precision, the transmission stability and the transmission stability are obviously improved.

In addition, the lower end of the connecting shaft 2 is rotatably connected to the box body 1 through a first bearing 7, and a framework oil seal 8 is further arranged between the box body 1 and the first bearing 7.

In addition, a connecting flange 9 is installed on the box body 1, a transition flange is further installed at the rear end of the connecting flange, the input shaft 4 is rotatably connected in the connecting flange 9 through a second bearing 10, the rear end of the input shaft 4 is connected with a servo motor in a clamping mode through a clamping clamp 11 in a clamping mode to receive power input, the positioning pin 12 is a cylindrical pin, and the front end of the positioning pin is inserted into the mounting hole 16 through the cylindrical pin so that the input shaft gear 5 is connected with the input shaft 4. The input shaft gear 5 is connected with the input shaft 4 through two cylindrical pins 12 on the shaft end face, the input shaft gear 5 is in interference fit with the input shaft 4, and the two cylindrical pins are in interference fit with the mounting holes 16 to limit the axial freedom degree and the rotational freedom degree of the input shaft gear 5.

In addition, the first bearing 7 and the second bearing 10 are both deep groove ball bearings.

In addition, at least one adjusting screw 13 is disposed below the case 1, and an upper end of the adjusting screw 13 is in contact with the connecting flange 9 to adjust the height of the connecting flange 9. A gap is reserved between the connecting flange 9 and the box body 1, the adjusting screws 13 are screwed on the bottom surface of the box body 1, the connecting flange 9 and the input shaft 4 are moved by rotating the adjusting screws 13, the effect of adjusting the meshing gap between the input shaft gear 5 and the gear disc is achieved, and the number of the adjusting screws 13 can be 2 or more.

Compared with the prior art, the output end structure of the servo rotary hollow platform can improve the output transmission precision, the transmission rigidity and the transmission stability.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.