CN112720022A

CN112720022A - Vertical double gear gap eliminating speed reducer that feeds of horizontal lathe

Info

Publication number: CN112720022A
Application number: CN202011614190.8A
Authority: CN
Inventors: 张斌斌; 展海瑜
Original assignee: Tianshui Xinghuo Machine Tool Co Ltd
Current assignee: Gansu Xinghuo Intelligent Cnc Machine Tool Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-30

Abstract

The invention provides a longitudinal feeding double-gear anti-backlash speed reducer of a horizontal lathe, wherein a servo motor is fixedly provided with an arc small bevel gear through an expansion sleeve, the arc large bevel gear is arranged on a shaft II, the gear is arranged on an anti-backlash shaft, a left rotating gear and a right rotating gear are arranged on the anti-backlash shaft, a right rotating helical gear and a left rotating helical gear are respectively arranged on a shaft IV left shaft and a shaft IV right shaft, and a shaft V left self-backlash gear and a shaft V right self-backlash gear are respectively arranged on a shaft V left shaft and a shaft V right shaft of an output shaft through the expansion sleeve; the gap eliminating shaft is sleeved with a flange plate, the gap eliminating flange plate is arranged in the flange plate, a disc spring is arranged in the flange plate, the disc spring is sleeved on a boss at the tail end of the gap eliminating shaft, the right-handed helical gear and the left-handed helical gear are divided into two parts, and the distance between the gap eliminating flange plate and the flange plate is adjustable. Has the advantages that: the problems of precision, rigidity and reverse clearance in the transmission process of the gear and the rack of the numerical control strip machine tool are solved, the function of eliminating the clearance of the gear is realized, and the positioning precision of longitudinal feeding of the machine tool is ensured.

Description

Vertical double gear gap eliminating speed reducer that feeds of horizontal lathe

Technical Field

The invention belongs to the field of machine tool equipment, and relates to a longitudinal feeding speed reducer of a long-strip horizontal lathe.

Background

At present, for a common numerical control horizontal lathe, a ball screw and a gear rack transmission structure form is adopted for longitudinal feeding, but for a machine tool for processing a longer workpiece, the ball screw cannot meet the requirements of the machine tool and only can rely on the gear rack transmission structure. At present, self-made gear rack transmission forms are various, but the transmission requirements of a numerical control machine tool cannot be met from the precision rigidity. Therefore, the longitudinal feeding of the tool rest is realized by adopting an inlet anti-backlash speed reducer on most long-strip machine tools. Although the imported anti-backlash speed reducer is high in precision, the structure is complex, the price is high, the order period is long, the rapid and flexible market demand cannot be met, and the imported goods parts are also high in price and inconvenient to maintain.

Disclosure of Invention

The invention aims to provide a device which is used for a horizontal lathe, has a structure of gear and rack transmission and can realize clearance elimination and feeding transmission of gears and racks.

The technical scheme of the invention is as follows: a double-gear anti-backlash speed reducer for the longitudinal feed of a horizontal lathe is connected with a servo motor, a circular arc large bevel gear, a shaft II, a gear, an anti-backlash shaft, a shaft IV left shaft, a shaft IV right shaft, a shaft V left shaft, a shaft V right shaft, a shaft V left self-backlash eliminating gear and a shaft V right self-backlash eliminating gear are arranged in a box body, the servo motor is fixedly provided with a circular arc small bevel gear through an expansion sleeve, the circular arc large bevel gear is arranged on the shaft II, the gear is arranged on the anti-backlash shaft, the shaft V left shaft and the shaft V right shaft are respectively provided with a left self-backlash eliminating gear V and a right self-backlash eliminating gear V through the expansion sleeve, the circular arc small bevel gear and the circular arc large bevel gear reduce speed and change direction, the shaft II is driven to the anti-backlash shaft through the gear reduction, the left helical gear and the right helical gear of the anti-backlash shaft respectively drive the left shaft and the right helical gear of the left shaft IV shaft at the same reduction speed ratio as the right helical gear, the IV left shaft and the IV right shaft transmit the V left shaft of the output shaft and the V right shaft of the output shaft through the same speed reduction ratio; the gap eliminating shaft is sleeved with a flange plate, the flange plate is internally provided with a gap eliminating flange plate, a disc spring is arranged in the flange plate, the disc spring is sleeved on a boss at the tail end of the gap eliminating shaft, a V left self-gap eliminating gear and a V right self-gap eliminating gear are provided with sub gears, a gasket is arranged between the sub gears and a main gear, the sub gears and the main gear are fastened by screws, the sub gears are meshed with the main gear, an IV left shaft and an IV right shaft, and the distance between the gap eliminating flange plate and the flange plate is adjustable.

The invention has the beneficial effects that: the device is a speed reducing mechanism for double-gear rack backlash eliminating transmission, and the speed reducing mechanism has the advantages of accurate positioning, reliable work, simple structure and low price. The problems of precision, rigidity and reverse clearance in the gear and rack transmission process of the numerical control strip machine tool are solved, the positioning precision and repeated positioning precision of longitudinal feeding of the machine tool are guaranteed, the function of eliminating the clearance of the gear is realized, and the machining precision of the strip machine tool is improved.

Drawings

FIG. 1 is an external view of the present invention;

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

fig. 3 is a B-B sectional view of fig. 1.

Detailed Description

The device is arranged on a saddle and is meshed with a helical tooth strip on a lathe bed to realize the longitudinal feeding of a saddle tool rest. The arc small bevel gear 4 is fixed on the servo motor 2 through the expansion sleeve 5, the arc small bevel gear 4 and the arc large bevel gear 6 are in transmission, speed reduction and direction change are achieved, power is transmitted to the driving shaft II 7, the speed reduction of the driving shaft II 7 is achieved through the gear 8, and the power is transmitted to the anti-backlash shaft 9. The left and right rotating

gears

22 and 23 of the anti-backlash shaft 9 and the right and left rotating

bevel gears

14 and 19 are respectively transmitted to the IV left shaft 13 and the IV right shaft 18 at the same speed reduction ratio, the IV left shaft 13 and the IV right shaft 18 transmit power to the output shaft V left shaft 17 and the output shaft V right shaft 21 through the same speed reduction ratio, and the saddle is driven to feed longitudinally through meshing with the upper teeth bars of the lathe bed. In order to ensure the clearance elimination of the gears, sub-gears are arranged on a V left self-clearance elimination gear 15 and a V right self-clearance elimination gear 20, a gasket is arranged between the sub-gears and a main gear, the sub-gears and the main gear are fastened by screws, the sub-gears are meshed with the main gear and an IV left shaft 13 and an IV right shaft 18, and the function of self-clearance elimination is realized by adjusting the axial distance of the bevel gears. The V left self-gap-eliminating gear 15 and the V right self-gap-eliminating gear 20 are fixed on a V left shaft 17 and a V right shaft 21 of an output shaft through an expansion sleeve 16. The gear backlash is realized by adjusting the distance between a backlash eliminating flange plate 11 and a flange plate 12 through a spanner, so that the reverse gap between a right-handed helical gear 14 and a left-handed helical gear 19 is eliminated through the axial displacement of the backlash eliminating shaft 9, and the disc spring 10 plays a role of reacting force to meet the balance of the axial forces of the right-handed helical gear 14 and the left-handed helical gear 19.

Claims

1. The utility model provides a horizontal lathe vertically feeds double gear gap eliminating decelerator, is connected with servo motor (2), characterized by: the gearbox is characterized in that an arc large bevel gear (6), a shaft II (7), a gear (8), a clearance eliminating shaft (9), a left shaft IV (13), a right shaft IV (18), a left shaft V (17) of an output shaft, a right shaft V (21) of the output shaft, a left clearance eliminating gear (15) and a right clearance eliminating gear (20) are arranged in the box, an arc small bevel gear (4) is fixed on the servo motor (2) through an expansion sleeve (5), the arc large bevel gear (6) is installed on the shaft II (7), the gear (8) is installed on the clearance eliminating shaft (9), a left rotating gear (22) and a right rotating gear (23) are installed on the clearance eliminating shaft (9), a right rotating helical gear (14) and a left helical gear (19) are installed on the left shaft IV (13) and the right shaft IV (18), and a left clearance eliminating gear (15) and a left clearance eliminating gear (20) are installed on the left shaft V (17) and the right shaft V (21) through expansion sleeves (16), V right self-backlash-eliminating gear (20), arc small bevel gear (4) and arc big bevel gear (6) are in speed reduction and direction change transmission, shaft II (7) is in speed reduction transmission to backlash-eliminating shaft (9) through gear (8), left and right gears of backlash-eliminating shaft (9) and right helical gear (14) and left helical gear (19) respectively transmit IV left shaft (13) and IV right shaft (18) with the same speed reduction ratio, IV left shaft (13) and IV right shaft (18) transmit output shaft V left shaft (17) and output shaft V right shaft (21) with the same speed reduction ratio; the gap eliminating shaft (9) is sleeved with a flange plate (12), the flange plate (12) is internally provided with a gap eliminating flange plate (11), the gap eliminating flange plate (11) is provided with a disc spring (10) inside the flange plate (12), the disc spring (10) is sleeved on a boss at the tail end of the gap eliminating shaft (9), a V left self-gap eliminating gear (15) and a V right self-gap eliminating gear (20) are respectively provided with a sub-gear, a gasket is arranged between the sub-gear and a main gear, the sub-gear and the main gear are fastened by screws, the sub-gear is meshed with the main gear, an IV left shaft (13) and an IV right shaft (18), and the distance between the gap eliminating flange plate (11) and the flange plate (.