CN220825665U - Flexible cylindrical indexing cam rotary table - Google Patents

Abstract

The utility model relates to a turntable, in particular to a flexible cylindrical indexing cam turntable, which comprises a driving motor, a speed reducer, a cam shaft, rollers, roller shafts, a turntable and a shell, wherein the speed reducer is arranged on the cam shaft; an output shaft of the driving motor is connected with a cam shaft through a speed reducer; the cam curve of the cam shaft is a continuous non-sectional curve, and the cam shaft is arranged in the shell; the rollers are arranged between the convex ridges of the cam shaft and are connected with the turntable through roller shafts; the turntable is arranged outside the shell. Compared with the prior art, the utility model solves the defects that the cam turntable in the prior art has poor flexibility and can not stop at any angle, and realizes the control of the rotating angle of the turntable by controlling the rotating angle of the cam shaft through the servo motor, thereby being capable of realizing high-flexibility production by matching with a production line.

Description

Flexible cylindrical indexing cam rotary table

Technical Field

The utility model relates to a turntable, in particular to a flexible cylindrical indexing cam turntable.

Background

At present, most automobile factory welding production lines need flexible switching production of multiple automobile types, and for this reason, a turntable is often used for switching automobile type tools.

The turntable can be divided into a worm gear transmission type turntable and a cam roller turntable according to different rotation modes, the cam roller turntable can eliminate transmission gaps inside the turntable, the rotation angle precision and the stability of rotary motion of the turntable are improved, and the turntable has the characteristics of low friction, no gap, high rigidity and the like, so that the turntable is widely applied.

As disclosed in chinese patent CN201010254302.3, a cam disc includes a housing, a driving device provided on the housing, a power output shaft driven by the driving device and having a cam, and a control device provided on the power output shaft to transfer an external impact load. As another example, chinese patent CN202220154690.6 discloses an upper motor type cam roller turntable comprising: the device comprises a box body, a turntable, an output shaft, a driving cam shaft and a driving motor; the front side of box is equipped with the installation position, carousel rotatable setting is in on the installation position of box, the output shaft with the carousel is connected, the drive camshaft sets up the top of output shaft, the arc cam structure of drive camshaft with roller roll connection on the output shaft, driving motor sets up the box top, and through the gear train with the drive camshaft transmission is connected. From the above publications, there have been some studies and developments on cam turrets. However, the traditional cam roller turntable has the defects that the cam curve of the traditional cam roller turntable adopts the limitation of continuous non-segmented curve, and the traditional cam roller turntable can only be switched according to the designed fixed angle, so that the flexibility is poor; and the maintenance of the vulnerable part in the turntable is very complicated, and the turntable can be maintained after the tool is disassembled, so that the maintenance cost and the maintenance man-hour of the turntable are greatly increased.

Therefore, it is necessary to further develop an indexing cam turret with high flexibility, which can stop at any angle and further meet the flexible production requirements of the production line.

Disclosure of utility model

The utility model aims to solve at least one of the problems and provide a flexible cylindrical indexing cam rotary table, so as to solve the defects that the cam rotary table in the prior art is poor in flexibility and can not stop at any angle, control the rotating angle of a rotary table by controlling the rotating angle of a cam shaft through a servo motor, and further realize highly flexible production by matching with a production line.

The aim of the utility model is achieved by the following technical scheme:

A flexible cylindrical indexing cam rotary table comprises a driving motor, a speed reducer, a cam shaft, rollers, roller shafts, a rotary table and a shell;

An output shaft of the driving motor is connected with a cam shaft through a speed reducer;

the cam curve of the cam shaft is a continuous non-sectional curve, and the cam shaft is arranged in the shell;

The rollers are arranged between the convex ridges of the cam shaft and are connected with the turntable through roller shafts;

The turntable is arranged outside the shell.

Preferably, the camshaft is in contact with at least two rollers simultaneously.

Preferably, the driving motor is a servo motor.

Preferably, an output shaft of the driving motor is connected with the cam shaft through a speed reducer.

Preferably, the shell is provided with an opening with the diameter larger than that of the roller, and a cover plate covers the opening; the rotary table is provided with a through hole, and the roller shaft is assembled in the through hole through a locking screw.

Preferably, the cover plate is an oil seal end cover.

Preferably, one end of the roller shaft connecting roller is provided with a shaft shoulder with the diameter larger than that of the through hole, and the other end of the roller shaft connecting roller is provided with a threaded hole matched with the locking screw.

Preferably, the through holes are uniformly arranged at intervals along the circumferential direction of the turntable.

Preferably, the opening is disposed on the bottom surface of the housing.

Preferably, the housing is provided with a slot structure, and the opening is arranged in the slot structure.

The working principle of the utility model is as follows:

The driving motor drives the cam shaft to rotate through the speed reducer, and then the convex ridges of the cam shaft stir the rollers to enable the rollers to move, and further the roller shafts drive the turntable to rotate.

Compared with the prior art, the utility model has the following beneficial effects:

The cam curve is changed into a continuous non-segmented curve, so that the constant ratio of the rotation angle of the cam shaft to the rotation angle of the turntable is ensured, the servo motor is adopted for driving and controlling based on the outside, the stop of any angle is realized, the flexibility of indexing is greatly enhanced, and the high-flexibility production can be completed by being matched with a production line.

Through changing the connection form and the shell structure of roller and carousel, for adopting the trompil that detachable form's roller and roller axle cooperation set up in advance specifically, make the revolving stage roller can dismantle on line, and then reduced the maintenance degree of difficulty and maintenance man-hour.

Drawings

FIG. 1 is a schematic perspective view of a flexible cylindrical indexing cam turret;

FIG. 2 is a schematic axial cross-sectional view of a flexible cylindrical indexing cam turret at a camshaft;

FIG. 3 is a schematic view of a radial cross-sectional configuration of a flexible cylindrical indexing cam turret;

FIG. 4 is a schematic cross-sectional view of the A-A plane of FIG. 3;

In the figure: 1-a drive motor; 2-a speed reducer; 3-a housing; 4-a turntable; 5-a camshaft; 6-a roller; 7-a roller shaft; 8-locking the screw; 9-cover plate.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

Example 1

1-4, A flexible cylindrical indexing cam rotary table comprises a driving motor 1, a speed reducer 2, a cam shaft 5, rollers 6, a roller shaft 7, a rotary table 4 and a shell 3;

an output shaft of the driving motor 1 is connected with a cam shaft 5 through a speed reducer 2;

The cam curve of the cam shaft 5 is a continuous non-segmented curve, and the cam shaft 5 is arranged in the shell 3;

the rollers 6 are arranged between the ridges of the cam shaft 5, and the rollers 6 are connected with the turntable 4 through roller shafts 7;

The turntable 4 is arranged outside the shell 3.

More specifically, in the present embodiment:

As shown in fig. 1 and 2, the cam turret is integrally formed by a housing 3, a turntable 4 provided at the upper part of the housing 3, a cam shaft 5 provided inside the housing 3, a speed reducer 2 drivingly connected to the cam shaft 5, and a drive motor 1 connected to the speed reducer 2; more specifically, the cam shaft 5 and the rotary table 4 are driven by a roller 6 and a roller shaft 7, and the driving motor 1 and the cam shaft 5 are driven by a speed reducer 2.

As shown in fig. 2, rollers 6 are arranged between the ridges of the cam shaft 5, the rollers 6 are sleeved at one end of a roller shaft 7, the rollers 6 are in transmission connection with the roller shaft 7, and the roller shaft 7 is further connected to the turntable 4. Furthermore, the output of the driving motor 1 is applied to the cam shaft 5 after being decelerated by the speed reducer 2, the cam shaft 5 rotates in a following way, meanwhile, the roller 6 is stirred to move, and the roller 6 is driven on the roller shaft 7 and further drives the turntable 4 to rotate through the roller shaft 7.

The cam curve of the cam shaft 5 of the cam rotary table is a continuous non-sectional curve, so that when the cam shaft 5 rotates for a certain angle, the rotary table 4 correspondingly rotates for a fixed proportion of angles under the drive of the roller 6. Therefore, the rotation number of the driving motor 1 (a servo motor is adopted, more accurate) can be controlled, the turntable 4 can be stopped at any angle position, and the flexibility of indexing is improved.

In addition, the roller shafts 7 connected to the turntable are arranged in a mode of being uniformly spaced along the circumferential direction, and the rollers 6 are in one-to-one correspondence with the roller shafts 7, so that when the turntable 4 rotates at any position, at least two rollers 6 are in contact with the cam shaft 5, and the rotation stress of the turntable 4 is improved.

Further, for realizing the online disassembly of the roller 6 and the roller shaft 7 (the wearing parts inside the turntable 4), as shown in fig. 3 and 4, an inward concave groove structure is formed on the side wall (positioned at the opposite side of the roller shaft 7) of the shell 3, an opening is formed on the bottom surface of the shell 3 in the groove structure, and a cover plate 9 for covering the opening is arranged at the opening; the turntable 4 is provided with a through hole along the circumferential direction, and the roller shaft 7 is assembled in the through hole through a locking screw 8. When the tool is required to be disassembled and replaced, the turntable 4 is rotated, the roller 6 and the roller shaft 7 which are required to be replaced are rotated to the opening, the locking screw 8 is disassembled from one side of the upper end face of the turntable 4 through the through hole, the cover plate 9 is disassembled or opened from the shell 3, then the force or impact is applied to the through hole from one side of the end face of the turntable 4, and the online disassembly of the roller 6 and the roller shaft 7 from the turntable 4 can be completed without disassembling the tool.

The cover plate 9 is of an openable structure, the contact surface of the cover plate and the shell 3 is made of rubber, the shell 3 can be sealed when the cover plate is closed, and sundries are prevented from entering the shell 3 through the openings. The diameter of the opening is greater than the diameter of the roller 6 so that the roller 6 and the roller shaft 7 can be removed from the opening. The lower end of the roller shaft 7 (one end connected with the roller 6) is provided with a shaft shoulder with the diameter larger than that of the through hole, the lower end of the roller shaft 7 is limited, and the roller 6 cannot be contacted with the convex ridge of the cam shaft 5 due to the fact that the roller shaft 7 is excessively high in assembly is avoided; the upper end of the roller shaft 7 is provided with a threaded hole which is in threaded fit with a locking screw 8. The middle section of the through hole can be narrower than the head of the locking screw 8, so that the locking screw 8 can be arranged on the middle section of the through hole, and the position of the roller shaft 7 in the through hole can be limited.

The flexible cylindrical indexing cam rotary table can be applied to tool switching of an automobile welding workshop and can be matched with production of a flexible production line.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims (10)

1. The flexible cylindrical indexing cam rotary table is characterized by comprising a driving motor (1), a speed reducer (2), a cam shaft (5), rollers (6), roller shafts (7), a rotary table (4) and a shell (3);

an output shaft of the driving motor (1) is connected with a cam shaft (5) through a speed reducer (2);

The cam curve of the cam shaft (5) is a continuous non-segmented curve, and the cam shaft (5) is arranged in the shell (3);

The rollers (6) are arranged between the ridges of the cam shaft (5), and the rollers (6) are connected with the turntable (4) through roller shafts (7);

the rotary table (4) is arranged outside the shell (3).

2. A flexible cylindrical indexing cam turret according to claim 1, characterized in that the camshaft (5) is in contact with at least two rollers (6) simultaneously.

3. A flexible cylindrical indexing cam turret according to claim 1, wherein the drive motor (1) is a servo motor.

4. A flexible cylindrical indexing cam turret according to claim 1, characterized in that the output shaft of the drive motor (1) is connected to the camshaft (5) via a speed reducer (2).

5. A flexible cylindrical indexing cam turret according to claim 1, characterized in that the housing (3) is provided with openings with a diameter larger than the diameter of the rollers (6) and with a cover plate (9) covering the openings; the rotary table (4) is provided with a through hole, and the roller shaft (7) is assembled in the through hole through a locking screw (8).

6. A flexible cylindrical indexing cam turret according to claim 5, wherein the cover plate (9) is an end cap oil seal.

7. The flexible cylindrical indexing cam rotary table according to claim 5, wherein one end of the roller shaft (7) connected with the roller (6) is provided with a shaft shoulder with a diameter larger than that of the through hole, and the other end is provided with a threaded hole matched with the locking screw (8).

8. The flexible cylindrical indexing cam rotary table according to claim 5, wherein the through holes are uniformly spaced along the circumference of the rotary table (4).

9. A flexible cylindrical indexing cam turret according to claim 5, wherein the aperture is provided in the bottom surface of the housing (3).

10. A flexible cylindrical indexing cam turret according to claim 9, wherein the housing (3) is provided with a slot structure, the aperture being provided in the slot structure.