CN219074887U

CN219074887U - Numerical control rotary workbench

Info

Publication number: CN219074887U
Application number: CN202223445581.9U
Authority: CN
Inventors: 徐天楠
Original assignee: Nantong Zhongnan Numerical Control Machine Made Co ltd
Current assignee: Nantong Zhongnan Numerical Control Machine Made Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-26
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a numerical control rotary workbench, which comprises a rotary table bearing, a rotary sleeve and a workbench, wherein an inner ring of the rotary table bearing, a worm wheel adjusting pad and a double-lead worm wheel are sequentially arranged on the rotary sleeve, a brake pad adjusting pad, a brake pad and a brake pad pressing plate are arranged in an inner hole of the rotary sleeve, and are fixedly arranged in a rotary table saddle through an outer ring of the rotary table bearing; a brake piston is arranged in the saddle of the upper turntable, and the axial displacement of the brake piston is limited by a flange plate above the brake piston; the workbench is fixedly arranged on the upper end surface of the rotary sleeve, and a central hole flange plate is arranged at the center of the workbench; the double-lead worm is arranged in the saddle of the turntable, the right end of the double-lead worm is fixedly supported by the needle roller bearing and the thrust roller bearing, the left end of the double-lead worm is supported by the needle roller bearing and is connected with the high-precision speed reducer by the elastic coupling, and the servo motor is arranged at the rear of the speed reducer. The utility model has simple structure, reliable operation, convenient and quick installation and maintenance; the turntable meets the requirements of heavy load, high precision and high speed.

Description

Numerical control rotary workbench

Technical Field

The utility model belongs to the technical field of testing devices, and particularly relates to a quick inspection jig for sealing a condenser.

Background

The numerical control rotary worktable can realize the functions of circular feeding motion and indexing. On the machining center, the four-axis linkage with the linear axis can be realized, and the machining center has irreplaceable functions in the aspect of machining parts with space curved surfaces.

At present, a medium-large numerical control rotary table with the size of 1000X1000 to 1600X1600 mostly adopts a transmission indexing structure of a large gear ring, a small gear shaft and a small worm gear pair, and a sliding guide rail structure is mostly adopted for supporting. The actual production and assembly are found to have a plurality of defects.

Old structure disadvantage:

1. the chain length of transmission, the clearance is not easy to adjust, and the precision is poor.

2. The sliding guide rail has low rotating speed, large friction resistance and slow dynamic response, and is particularly obvious in the processing of complex curved surface parts.

3. The structure is complex, and the assembly and maintenance are unchanged. In particular to a plastic guide rail plate adopted by a sliding guide rail, which can be worn after long-time use and needs replacement and repair, thus having huge workload.

In view of the problems, a numerical control rotary table with a brand new structure is developed and produced, and a large-diameter high-precision rotary table bearing support and a high-precision double-lead worm and worm wheel pair transmission indexing mechanism are adopted.

Disclosure of Invention

The utility model aims to provide a quick inspection jig for sealing a condenser, which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the numerical control rotary workbench comprises a rotary table bearing, a rotary sleeve and a workbench, wherein an inner ring of the rotary table bearing, a worm wheel adjusting pad and a double-lead worm wheel are sequentially arranged on the rotary sleeve, a brake pad adjusting pad, a brake pad and a brake pad pressing plate are arranged in an inner hole of the rotary sleeve, and the rotary table bearing is fixedly arranged in a rotary table saddle through an outer ring of the rotary table bearing;

a brake piston is arranged in the rotary table saddle, and the brake piston limits axial displacement through a flange above the brake piston;

the workbench is fixedly arranged on the upper end face of the rotary sleeve, and a central hole flange plate is arranged at the center of the workbench;

the double-lead worm is arranged in the rotary table saddle, the right end of the double-lead worm is fixedly supported by the needle bearing and the thrust roller bearing, the left end of the double-lead worm is supported by the needle bearing and is connected with the high-precision speed reducer by the elastic coupling, and the servo motor is arranged at the rear of the speed reducer.

Preferably, a circular grating is fixedly installed in the turntable saddle through a circular grating installation seat.

Preferably, the device further comprises a circular grating flange, wherein the lower end of the circular grating flange is connected with the circular grating, and the upper end of the circular grating flange is connected with the workbench.

The utility model has the technical effects and advantages that:

1. simple structure, reliable operation, convenient and quick installation and maintenance.

2. By adopting the large-diameter, heavy-load and high-precision turntable bearing, the requirements of the turntable on heavy load, high precision and high speed are realized, wherein the friction coefficient is small, and the dynamic response is quick.

3. The structure adopts the double-lead worm and gear pair, and has the advantages of less transmission chain, convenient backlash adjustment, small error and high precision.

4. By adopting the high-precision circular grating, the high position feedback precision is realized.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

fig. 2 is a schematic structural view of a worm portion of the present utility model.

In the figure: the novel high-precision speed reducer comprises a turntable bearing, a worm wheel adjusting pad 2, a double-lead worm wheel 3, a rotary sleeve 4, a brake pad adjusting pad 5, a brake pad 6, a brake pad pressing plate 7, a turntable saddle 8, a brake piston 9, a flange plate 10, a round grating 11, a round grating mounting seat 12, a workbench 13, a central hole flange plate 14, a round grating flange plate 15, a double-lead worm 16, a needle roller bearing 17, a thrust roller bearing 18, a bearing sleeve 19, a needle roller bearing 20, an elastic coupler 21, a high-precision speed reducer 22 and a servo motor 23.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1-2 show a specific embodiment of a numerically controlled rotary table according to the present utility model: the rotary table comprises a rotary table bearing 1, a rotary sleeve 4 and a workbench 13, wherein an inner ring of the rotary table bearing 1, a worm wheel adjusting pad 2 and a double-lead worm wheel 3 are sequentially arranged on the rotary sleeve 4, a brake pad adjusting pad 5, a brake pad 6 and a brake pad pressing plate 7 are arranged in an inner hole of the rotary sleeve 4, and are fixedly arranged in a rotary table saddle 8 through an outer ring of the rotary table bearing 1;

a brake piston 9 is arranged in the turntable saddle 8, and the brake piston 9 limits axial displacement through a flange plate 10 above the brake piston 9;

a circular grating 11 (high-precision angle encoder) is fixedly arranged in the turntable saddle 8 through a circular grating mounting seat 12; the device also comprises a circular grating flange plate 15, wherein the lower end of the circular grating flange plate 15 is connected with the circular grating 11, and the upper end of the circular grating flange plate is connected with the workbench 13;

the workbench 13 is fixedly arranged on the upper end face of the rotary sleeve 4, and a central hole flange 14 is arranged at the center of the workbench 13;

the double-lead worm 16 is arranged in the turntable saddle 8, the right end of the double-lead worm 16 is fixedly supported by a needle bearing 17 and a thrust roller bearing 18, and a bearing sleeve 19 arranged by the bearing can realize axial position size adjustment (the double-lead worm gear and the worm eliminate side gaps between the double-lead worm gear and the worm gear by adjusting the axial position size of the worm); the left end is supported by a needle bearing 20 and is connected with a high-precision speed reducer 22 by an elastic coupler 21, and a servo motor 23 is arranged behind the speed reducer 22.

The actions are as follows:

when the numerical control rotary table needs to rotate and index, the pressure oil pushes the brake piston 9 to rise, and the brake pad 6 is loosened; the servo motor 23 drives the double-lead worm 16 to rotate through the high-precision speed reducer 22 and the elastic coupling 21, and the worm 16 further drives the worm wheel 3 to rotate so as to realize the rotation and indexing of the workbench 13; when the workbench 13 needs to be fixed at a certain angle position, the servo motor 23 stops rotating, the pressure oil pushes the brake piston 9 to descend, the brake pad 6 is locked, the workbench 13 is kept fixed at the angle position, and the rotation indexing is completed.

The applicant has further stated that the present utility model is described by the above examples as to the implementation method and apparatus structure of the present utility model, but the present utility model is not limited to the above embodiments, i.e. it does not mean that the present utility model must be implemented by the above methods and structures. It should be apparent to those skilled in the art that any modifications of the present utility model, equivalent substitutions for the implementation method selected for the present utility model, addition of steps, selection of specific modes, etc., fall within the scope of the present utility model and the scope of the disclosure.

The utility model is not limited to the above embodiments, and all modes of achieving the object of the utility model by adopting the structure and method similar to those of the utility model are within the protection scope of the utility model.

Claims

1. The utility model provides a numerical control rotary table, includes revolving stage bearing (1), swivel sleeve (4) and workstation (13), its characterized in that: the inner ring of the turntable bearing (1), the worm wheel adjusting pad (2) and the double-lead worm wheel (3) are sequentially arranged on the rotary sleeve (4), a brake pad adjusting pad (5), a brake pad (6) and a brake pad pressing plate (7) are arranged in an inner hole of the rotary sleeve (4), and are fixedly arranged in the turntable saddle (8) through the outer ring of the turntable bearing (1);

a brake piston (9) is arranged in the turntable saddle (8), and the brake piston (9) limits axial displacement through a flange plate (10) above the brake piston;

the workbench (13) is fixedly arranged on the upper end face of the rotary sleeve (4), and a central hole flange (14) is arranged at the center of the workbench (13);

the double-lead worm (16) is arranged in the rotary table saddle (8), the right end of the double-lead worm (16) is fixedly supported by a needle bearing (17) and a thrust roller bearing (18), the left end of the double-lead worm is supported by a needle bearing (20) and is connected with a high-precision speed reducer (22) by an elastic coupling (21), and a servo motor (23) is arranged behind the speed reducer (22).

2. The numerically controlled rotary table as set forth in claim 1, wherein: a circular grating (11) is fixedly arranged in the turntable saddle (8) through a circular grating mounting seat (12).

3. A numerically controlled rotary table as in claim 2, wherein: the device further comprises a circular grating flange plate (15), wherein the lower end of the circular grating flange plate (15) is connected with the circular grating (11), and the upper end of the circular grating flange plate is connected with the workbench (13).