阅读说明：本技术 一种用于立车c轴的消隙结构 (A crack structure disappears for merry go round machine C axle ) 是由 朱振强 王新 于 2019-12-04 设计创作，主要内容包括：本发明涉及一种用于立车C轴的消隙结构,包括相配合设置的驱动油缸和偏心装置,所述驱动油缸包括固定块、活塞杆、左油缸管和右油缸管,所述左油缸管和右油缸管分别通过固定块安装在立车底座两侧,左油缸管和右油缸管之间设置活塞杆,所述活塞杆的外侧设有齿条；所述偏心机构包括偏心套、锁紧压板和锁紧撞块,所述偏心套通过锁紧压板和锁紧撞块安装在立车底座上,所述偏心套的上部设有一圈偏心套齿轮,所述偏心套齿轮与活塞杆上的齿条相齿合；所述驱动油缸通过油压带动活塞杆左右移动,活塞杆带动偏心套转动。本发明利用油缸推动偏心机构消隙,间隙利用油压自动补偿,比传统的变螺距蜗杆机构结构简单,成本低,空间小,工作更可靠。(The invention relates to a clearance eliminating structure for a C shaft of a vertical lathe, which comprises a driving oil cylinder and an eccentric device which are matched, wherein the driving oil cylinder comprises a fixed block, a piston rod, a left oil cylinder pipe and a right oil cylinder pipe; the eccentric mechanism comprises an eccentric sleeve, a locking pressing plate and a locking collision block, the eccentric sleeve is arranged on a vertical lathe base through the locking pressing plate and the locking collision block, a circle of eccentric sleeve gear is arranged at the upper part of the eccentric sleeve, and the eccentric sleeve gear is meshed with a rack on the piston rod; the driving oil cylinder drives the piston rod to move left and right through oil pressure, and the piston rod drives the eccentric sleeve to rotate. The invention utilizes the oil cylinder to push the eccentric mechanism to eliminate the gap, the gap utilizes the oil pressure to automatically compensate, and compared with the traditional variable-pitch worm mechanism, the variable-pitch worm mechanism has the advantages of simple structure, low cost, small space and more reliable work.)

1. The clearance eliminating structure for the C shaft of the vertical lathe is characterized by comprising a driving oil cylinder (1) and an eccentric device (2) which are matched, wherein the driving oil cylinder (1) is used for driving the eccentric device (2) to rotate, and the eccentric device (2) is connected with a gear transmission mechanism and used for eliminating a side clearance;

the driving oil cylinder (1) comprises a fixing block (3), a piston rod (4), a left oil cylinder pipe (5) and a right oil cylinder pipe (6), the left oil cylinder pipe (5) and the right oil cylinder pipe (6) are respectively installed on two sides of a vertical lathe base through the fixing block (3), the piston rod (4) is arranged between the left oil cylinder pipe (5) and the right oil cylinder pipe (6), and a rack (7) is arranged on the outer side of the piston rod (4);

the eccentric mechanism comprises an eccentric sleeve (8), a locking pressing plate (9) and a locking collision block (10), the eccentric sleeve (8) is installed on a vertical lathe base through the locking pressing plate (9) and the locking collision block (10), a circle of eccentric sleeve gear (11) is arranged on the upper portion of the eccentric sleeve (8), and the eccentric sleeve gear (11) is meshed with a rack (7) on the piston rod (4); the driving oil cylinder (1) drives the piston rod (4) to move left and right through oil pressure, and the piston rod (4) drives the eccentric sleeve (8) to rotate.

2. The anti-backlash structure for the C-axis of a vertical lathe according to claim 1, wherein the ends of the left cylinder pipe (5) and the right cylinder pipe (6) are respectively provided with a choke plug (12).

3. The anti-backlash structure for the C-axis of a vertical lathe according to claim 1, wherein a gasket (13) is provided in the left cylinder pipe (5).

Technical Field

The invention relates to a clearance eliminating structure for a C shaft of a vertical lathe, and belongs to the technical field of machine tool equipment.

Background

In theory, a pair of gears should have no side gaps during meshing, but actually, in order to compensate size change caused by machining, installation errors and temperature change and prevent the gears from being stuck, a certain tooth side gap is required to be reserved on the working surface of the gears, and the gear transmission mechanism has side gaps which are used for preventing the gears from being stuck due to errors and thermal change, but the side gaps simultaneously bring idle stroke to the mechanism while reversing, so that the mechanism cannot be accurately positioned;

(1) although the backlash eliminating gear of the existing rigidity adjusting mechanism can eliminate the backlash, the gear engagement condition is deteriorated due to the rigid connection method, other abnormal sounds are easily generated when the gear moves, and the dislocation angle of the two gears needs to adjust the circumferential positions of the two gears and then fix the two gears, so that the backlash eliminating gear is troublesome to process, wastes time and labor and has a complex structure.

(2) Although the existing backlash eliminating gear with a flexible adjusting structure can ensure the meshing work of the gear, the structure is complex, the whole size is relatively large, and the service life is short due to the limitation of the structure and the rigidity of the backlash eliminating tension spring.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a clearance eliminating structure for a vertical lathe C shaft, which is novel in design and simplified in structure.

According to the technical scheme provided by the invention: a clearance eliminating structure for a C shaft of a vertical lathe comprises a driving oil cylinder and an eccentric device which are matched, wherein the driving oil cylinder is used for driving the eccentric device to rotate, and the eccentric device is connected with a gear transmission mechanism and used for eliminating a side clearance;

the driving oil cylinder comprises a fixed block, a piston rod, a left oil cylinder pipe and a right oil cylinder pipe, the left oil cylinder pipe and the right oil cylinder pipe are respectively installed on two sides of the vertical lathe base through the fixed block, the piston rod is arranged between the left oil cylinder pipe and the right oil cylinder pipe, and a rack is arranged on the outer side of the piston rod;

the eccentric mechanism comprises an eccentric sleeve, a locking pressing plate and a locking collision block, the eccentric sleeve is arranged on a vertical lathe base through the locking pressing plate and the locking collision block, a circle of eccentric sleeve gear is arranged at the upper part of the eccentric sleeve, and the eccentric sleeve gear is meshed with a rack on the piston rod; the driving oil cylinder drives the piston rod to move left and right through oil pressure, and the piston rod drives the eccentric sleeve to rotate.

Furthermore, the end parts of the left cylinder pipe and the right cylinder pipe are respectively provided with a plug.

Furthermore, a gasket is arranged in the left oil cylinder pipe.

Compared with the prior art, the invention has the following advantages:

1. the anti-backlash structure is completely different and simplified.

2. The oil cylinder is used for pushing the eccentric mechanism to eliminate the gap, the gap is automatically compensated by using oil pressure, and compared with the traditional variable-pitch worm mechanism, the variable-pitch worm mechanism is simple in structure, low in cost, small in space and more reliable in work.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 1-driving oil cylinder, 2-eccentric device, 3-fixed block, 4-piston rod, 5-left oil cylinder pipe, 6-right oil cylinder pipe, 7-rack, 8-eccentric sleeve, 9-locking pressing plate, 10-locking collision block, 11-eccentric sleeve gear, 12-plug and 13-gasket.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the anti-backlash structure for the C-axis of the vertical lathe comprises a driving oil cylinder 1 and an eccentric device 2 which are matched, wherein the driving oil cylinder 1 is used for driving the eccentric device 2 to rotate, and the eccentric device 2 is connected with a gear transmission mechanism to eliminate a backlash;

the driving oil cylinder 1 comprises a fixed block 3, a piston rod 4, a left oil cylinder pipe 5 and a right oil cylinder pipe 6, the left oil cylinder pipe 5 and the right oil cylinder pipe 6 are respectively installed on two sides of a vertical lathe base through the fixed block 3, the piston rod 4 is arranged between the left oil cylinder pipe 5 and the right oil cylinder pipe 6, and a rack 7 is arranged on the outer side of the piston rod 4;

the eccentric mechanism comprises an eccentric sleeve 8, a locking pressing plate 9 and a locking collision block 10, the eccentric sleeve 8 is installed on a vertical lathe base through the locking pressing plate 9 and the locking collision block 10, a circle of eccentric sleeve gear 11 is arranged at the upper part of the eccentric sleeve 8, and the eccentric sleeve gear 11 is meshed with the rack 7 on the piston rod 4; the driving oil cylinder 1 drives the piston rod 4 to move left and right through oil pressure, and the piston rod 4 drives the eccentric sleeve 8 to rotate.

The end parts of the left oil cylinder pipe 5 and the right oil cylinder pipe 6 are respectively provided with a plug 12; and a gasket 13 is arranged in the left oil cylinder pipe 5.

The working principle is as follows: the motor in the C-axis area of the vertical lathe is provided with a speed reducer, the output end of the speed reducer is provided with a motor gear, the motor gear drives a large gear on the vertical lathe to rotate, and a backlash eliminating structure needs to be arranged on the vertical lathe to eliminate backlash due to the fact that a gear side gap exists between the motor gear and the large gear. The speed reducer is arranged in an eccentric sleeve 8 of the anti-backlash structure, the left oil cylinder pipe 5 takes oil, and oil pressure drives the piston rod 4 to move, so that the eccentric sleeve 8 meshed with the piston rod moves together, the center distance between the eccentric sleeve 8 and the motor gear can be conveniently adjusted, and the backlash clearance between the motor gear and the large gear is eliminated.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.