CN217255000U

CN217255000U - High-precision numerical control indexing device

Info

Publication number: CN217255000U
Application number: CN202221124799.1U
Authority: CN
Inventors: 白永胜; 陈大用; 田静
Original assignee: Shenyang Hanwei Machinery Manufacturing Co ltd
Current assignee: Shenyang Hanwei Machinery Manufacturing Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-08-23
Anticipated expiration: 2032-05-12

Abstract

The utility model relates to the technical field of machining, specifically a high accuracy numerical control indexing means. The device comprises a slewing mechanism, a transmission mechanism, a driving mechanism and a base; the transmission mechanism is arranged in the base and comprises a worm wheel and a variable tooth thickness worm which are meshed with each other, the worm wheel is connected with the swing mechanism arranged on the base, and the variable tooth thickness worm is connected with the driving mechanism arranged on one side of the base; the driving mechanism drives the variable tooth thickness worm to rotate, the variable tooth thickness worm drives the worm wheel to rotate, and the worm wheel drives the swing mechanism to rotate. The utility model discloses small, light in weight, rigidity are big, easy operation has guaranteed the precision that suits with processing moreover. The defect that the machining precision of gear machining equipment is reduced is overcome, the machining precision of the gear can meet the requirement, the repair of the machining precision of the gear is avoided or reduced, the working efficiency is improved, and the reject ratio of products is reduced.

Description

High-precision numerical control indexing device

Technical Field

The utility model relates to a machinery processing technology field especially relates to a high accuracy numerical control indexing means.

Background

The gear transmission is the most widely applied mechanical transmission mode in various modern equipment and has the characteristics of high transmission efficiency, accurate transmission ratio, long service life and the like. With the development of modern industry, enterprises put forward more strict requirements on the machining precision of gears so as to ensure that various productions are carried out in order. From a large amount of data analysis, the error of the precision of the machining equipment is the primary factor influencing the machining precision of the gear, and particularly, after the high-precision numerical control equipment is normally used for a period of time, certain abrasion inevitably exists, so that the precision of the high-precision numerical control equipment is reduced, and the machining precision of the gear is necessarily reduced. Therefore, in order to improve the machining accuracy of the gear, it is necessary to solve or compensate for the problem of the accuracy reduction of the gear machining equipment.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a high accuracy numerical control indexing means, it has solved the problem that current gear machining equipment precision reduces, and then has improved the machining precision of gear.

In order to achieve the above object, the utility model discloses a main technical scheme include:

the embodiment of the utility model provides a high-precision numerical control dividing device, which comprises a swing mechanism, a transmission mechanism, a driving mechanism and a base; the transmission mechanism is arranged in the base and comprises a worm wheel and a variable tooth thickness worm which are meshed with each other, the worm wheel is connected with the swing mechanism arranged on the base, and the variable tooth thickness worm is connected with the driving mechanism arranged on one side of the base; the driving mechanism drives the variable tooth thickness worm to rotate, the variable tooth thickness worm drives the worm wheel to rotate, and the worm wheel drives the swing mechanism to rotate.

Further, the slewing mechanism comprises a slewing workbench, a slewing support, a first bearing, a second bearing, a third bearing and a locking nut; the inner ring of the rotary worktable is connected with the rotary support, and the outer ring of the rotary worktable is connected with the worm gear; the rotary worktable is supported on the base through the first bearing; a second bearing and a third bearing are arranged between the lower part of the rotary support and the base; and a locking nut is arranged on the rotary support at the lower part of the third bearing.

Further, actuating mechanism includes step motor and shaft coupling, step motor's stiff end is fixed on the base, step motor's drive end with the one end of shaft coupling is connected, the other end of shaft coupling with the one end of variable tooth thickness worm is connected.

Furthermore, an adjusting gasket is arranged at one end, located on the inner side of the base, of the variable-tooth-thickness worm, and the meshing position of the variable-tooth-thickness worm and the worm wheel is adjusted through the thickness of the adjusting gasket.

Further, the adjustment shim is positioned through a mounting hole in the base.

Further, the tooth thickness of the variable-tooth-thickness worm is uniformly thickened or thinned along the axial direction.

Further, an end cover is arranged on the lower portion of the base.

The utility model has the advantages that: the utility model discloses a high accuracy numerical control indexing means has following beneficial effect:

1. the utility model discloses small, light in weight, rigidity are big, easy operation has guaranteed the precision that suits with processing moreover.

2. On the premise of ensuring the machining precision, the effective utilization rate of the gear machining equipment is improved, the service life of the machining equipment is prolonged, and therefore the production cost is reduced.

3. The defect that the machining precision of gear machining equipment is reduced is overcome, the machining precision of the gear can meet the requirement, the repair of the machining precision of the gear is avoided or reduced, the working efficiency is improved, and the reject ratio of products is reduced.

4. The gear machining precision is improved, the product quality is guaranteed, and the production efficiency is improved.

Drawings

Fig. 1 is a front sectional view of a high-precision numerical control indexing device of the present invention;

fig. 2 is a top partial cross-sectional view of fig. 1.

In the figure: 1. a rotary table; 2. a first bearing; 3. a rotary support; 4. a second bearing; 5. a third bearing; 6. a first screw; 7. a worm gear; 8. a worm with variable tooth thickness; 9. a base; 10. a second screw; 11. an end cap; 12. locking the nut; 13. a stepping motor; 14. a transition plate; 15. a third screw; 16. a first expansion sleeve; 17. a coupling; 18. a second expansion sleeve; 19. a gland; 20. a fourth bearing; 21. a gasket; 22. a fourth screw; 23. adjusting the gasket; 24. a bearing seat; 25. a fifth bearing; 26. and (6) tightening the screw.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

Example 1:

referring to fig. 1 and 2, an embodiment of the present invention provides a high-precision numerical control indexing device. The device comprises a slewing mechanism, a transmission mechanism, a driving mechanism and a base 9. Wherein the transmission mechanism is arranged in the base 9. The transmission mechanism comprises a worm wheel 7 and a variable-tooth-thickness worm 8 which are meshed with each other. The worm wheel 7 is connected with a rotary mechanism arranged on a base 9, and the variable tooth thickness worm 8 is connected with a driving mechanism arranged on one side of the base 9. The driving mechanism drives the variable-tooth-thickness worm 8 to rotate, the variable-tooth-thickness worm 8 drives the worm wheel 7 to rotate, and the worm wheel 7 drives the swing mechanism to rotate so as to drive a workpiece on the swing mechanism to rotate for processing. Specifically, one end of the variable-tooth-thickness worm 8, which is positioned on the inner side of the base 9, is provided with an adjusting shim 23, and the variable-tooth-thickness worm 8 moves along the axial direction of the variable-tooth-thickness worm by changing the thickness of the adjusting shim 23, so that the meshing position of the variable-tooth-thickness worm 8 and the worm wheel 7 is adjusted. The tooth thickness of the variable tooth thickness worm 8 is uniformly thickened or thinned along the axial direction, so that the variable tooth thickness worm 8 is well meshed with the worm wheel 7 by adjusting the meshing backlash of the variable tooth thickness worm 8 and the worm wheel 7, and the transmission stability is ensured. The utility model discloses a become tooth thickness worm 8, through the axial displacement of worm, adjust worm wheel 7 and become tooth thickness worm 8's meshing backlash, guarantee its transmission precision.

Specifically, the swing mechanism includes a swing table 1, a swing support 3, a first bearing 2, a second bearing 4, a third bearing 5, and a lock nut 12. Wherein, the inner ring of rotary table 1 is connected with rotary support 3 in a matching way, so that rotary table 1 can drive rotary support 3 to rotate together when rotating. The outer ring of the rotary worktable 1 is fixedly connected with a worm wheel 7 of a transmission mechanism through a first screw 6, and the rotary worktable 1 is driven to rotate through the worm wheel 7. The rotary table 1 is supported on a base 9 through a first bearing 2, and the first bearing 2 is a large rolling bearing. A second bearing 4 and a third bearing 5 are arranged between the lower part of the rotary support 3 and the base 9. And a locking nut 12 is arranged on the rotary support 3 at the lower part of the third bearing 5. Wherein, the second bearing 4 is a cylindrical roller bearing, and the third bearing 5 is a tapered roller bearing. The accurate rotation center is maintained by the cylindrical roller bearing and the tapered roller bearing, and the locking nut 12 locks the rotation center, so that the rotary table 1 can perform accurate circular feeding motion. The positioning accuracy of rotary table 1 mainly depends on the transmission accuracy of the worm wheel 7 worm pair that becomes tooth thickness worm 8 and worm wheel 7 and constitute, the utility model discloses a high accuracy worm wheel 7 worm is vice. The worm gear 7 and the worm pair and the swing mechanism are positioned or fixed through the base 9, the bottom of the base 9 is arranged on a platform of the processing equipment, and the positioning is carried out through the trapezoidal bolt and the pressing plate.

Wherein the driving mechanism comprises a stepping motor 13 and a coupling 17. A transition plate 14 on the stepping motor 13 is fixed on the base 9 through a third screw 15. The driving end of the stepping motor 13 is connected with one end of a coupler 17 through a first expansion sleeve 16, and the other end of the coupler 17 is connected with one end of a variable tooth thickness worm 8 through a second expansion sleeve 18. The stepping motor 13 has better position precision and repeatability, so that the rotary worktable 1 realizes accurate indexing, the processing precision of processing equipment is improved, and the processing precision of a gear is ensured to meet the requirement.

The utility model discloses a step motor 13 drives and becomes the thick worm 8 rotation of tooth, and it drives worm wheel 7 rotation to become the thick worm 8 of tooth, and worm wheel 7 drives swivel work head 1 rotation, realizes circumference feed motion and accurate graduation to improve the machining precision and the mechanical properties of gear.

Wherein, two ends of the variable tooth thickness worm 8 are respectively connected with the base 9 through a fourth bearing 20 and a fifth bearing 25. A gland 19 is arranged on the variable-tooth-thickness worm 8 close to one end of the fourth bearing 20 to prevent dust from entering the bearing. The fourth bearing 20 is connected to the base 9 by a fourth screw 22, a washer 21 is further provided between the fourth bearing 20 and the base 9, and the axial position of the variable-tooth-thickness worm 8 can be adjusted by adjusting the thickness of the washer 21. The bearing seat 24 of the fifth bearing 25 is connected with the base 9 through a set screw 26, and the set screw 26 penetrates into the side face of the base 9 to be fixed with the bearing seat 24, so that the installation and the disassembly are convenient, and the thickness of the adjusting gasket 23 is convenient to adjust. The adjusting shim 23 is arranged at the shoulder of the variable tooth thickness worm 8 near one end of the fifth bearing 25, and the adjusting shim 23 is positioned by a mounting hole in the base 9.

Wherein, the lower part of the base 9 is also provided with an end cover 11, and the end cover 11 is fixed with the base 9 through a second screw 10.

The following describes the usage of the present invention with reference to the attached drawings:

add man-hour, place the work piece of treating processing and carry out processing on rotary table 1, realize through step motor 13 that rotary table 1 is accurate the circumference feed and graduation to through adjusting the meshing backlash of becoming tooth thickness worm 8 and worm wheel 7, make become tooth thickness worm 8 and worm wheel 7 and form good meshing, with guarantee that the transmission is steady, thereby improve the machining precision of gear, guarantee product quality, improve production efficiency.

Claims

1. A high-precision numerical control indexing device is characterized in that: comprises a swing mechanism, a transmission mechanism, a driving mechanism and a base; the transmission mechanism is arranged in the base and comprises a worm wheel and a variable tooth thickness worm which are meshed with each other, the worm wheel is connected with the swing mechanism arranged on the base, and the variable tooth thickness worm is connected with the driving mechanism arranged on one side of the base; the driving mechanism drives the variable tooth thickness worm to rotate, the variable tooth thickness worm drives the worm wheel to rotate, and the worm wheel drives the swing mechanism to rotate.

2. A high precision numerical control indexing mechanism according to claim 1, wherein: the slewing mechanism comprises a slewing workbench, a slewing support, a first bearing, a second bearing, a third bearing and a locking nut; the inner ring of the rotary worktable is connected with the rotary support, and the outer ring of the rotary worktable is connected with the worm gear; the rotary table is supported on the base through the first bearing; a second bearing and a third bearing are arranged between the lower part of the rotary support and the base; and a locking nut is arranged on the rotary support at the lower part of the third bearing.

3. A high precision numerical control indexing mechanism according to claim 1, wherein: the driving mechanism comprises a stepping motor and a coupler, the fixed end of the stepping motor is fixed on the base, the driving end of the stepping motor is connected with one end of the coupler, and the other end of the coupler is connected with one end of the variable tooth thickness worm.

4. A high precision numerical control indexing mechanism according to claim 1, wherein: and one end of the variable tooth thickness worm, which is positioned at the inner side of the base, is provided with an adjusting gasket, and the meshing position of the variable tooth thickness worm and the worm wheel is adjusted through the thickness of the adjusting gasket.

5. A high precision numerical control indexing mechanism according to claim 4, wherein: the adjustment shim is positioned through a mounting hole in the base.

6. A high precision numerical control indexing mechanism according to claim 1, wherein: the tooth thickness of the variable tooth thickness worm is uniformly thickened or thinned along the axial direction.

7. A high precision numerical control indexing mechanism according to claim 1, wherein: an end cover is further arranged on the lower portion of the base.