CN101358683A - Bearing lubricating structure of direct-drive torque motor device - Google Patents

Abstract

The invention discloses a bearing lubricating structure of a direct-drive torque motor device, which mainly comprises a body, a direct-drive torque motor, a main shaft, a bearing assembly, an adjusting nut and an oiling assembly; the main shaft is matched with the adjusting nut to feed, lock and position the torque motor, each bearing assembly and the body, an auxiliary roller bearing is arranged in each bearing assembly and abuts against the space among the rear cover of the body, the main shaft and the adjusting nut, a lubricating oil path is arranged on the rear cover and is communicated with the auxiliary roller bearing, the lubricating oil path is communicated with an annular lubricating space between the rear cover and the adjusting nut, and the oil injection assembly is arranged on the lubricating oil path outwards. The bearing lubricating structure of the direct-drive torque motor device can lubricate the bearing by using a simple structure and reduce the maintenance cost.

Description

Bearing lubrication structure of direct drive torque motor device

technical field

The invention relates to a lubrication structure of a direct-drive torque motor device, in particular to a bearing lubrication structure of a direct-drive torque motor device, which can perform bearing lubrication with a simple structure and reduce maintenance costs.

Background technique

Today's motor devices are more and more used in industry. The main types of devices are outer rotors, inner rotors, etc. In addition to the high-precision effect of feed transmission, they have low friction loss rate and energy conversion. The advantages of high efficiency and low noise, therefore, the importance of motor devices for various industrial applications today cannot be overstated.

The current direct-drive torque motor device is suitable for the drive of shaft equipment, such as: automation equipment, indexing plates and various machine tools; no matter how the design changes of various product configurations, various products in the direct-drive torque motor A lot of bearing structures are usually installed between the device and the main shaft to maintain the smoothness of the relative rotation between the two. Although the above-mentioned design has been practical, there are still defects after it is practical:

After the direct-drive torque motor and the main shaft have been running for a certain period of time, the bearing structure is under long-term load for the operation of the direct-drive torque motor and the main shaft. The operator must perform regular maintenance and lubrication work, but for the bearings located inside the mechanism, the entire mechanism must be Only after dismantling can maintenance work be carried out, resulting in the problem of high maintenance costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a bearing lubrication structure of a direct-drive torque motor device, which can perform bearing lubrication with a simple structure and reduce maintenance costs.

In order to solve the above technical problems, the bearing lubrication structure of the direct drive torque motor device of the present invention includes:

The main body includes a back cover. At least one lubricating oil passage is opened in the back cover. The lubricating oil passage includes an oil injection passage, a first lubrication passage, and a second lubrication passage. The oil injection passage, the first lubrication passage and the second lubrication passage are mutually Connected, and the oil injection channel is open to the outside;

A direct drive torque motor is installed in the body;

The main shaft is installed in the direct drive torque motor, and the main shaft corresponds to the rear cover of the main body;

The bearing assembly is arranged between the main shaft, the direct drive torque motor, and the main body. The bearing assembly has an auxiliary roller bearing, and the auxiliary roller bearing is against the back cover of the main body and the main shaft, and the main body The first lubricating passage of the lubricating oil passage leads to the surface of the auxiliary roller bearing, and the second lubricating passage of the main body leads to the other side surface of the auxiliary roller bearing;

an oil injection assembly mounted on the oil injection passage of the body; and

The adjusting nut is locked and fixed on the external thread at the end of the main shaft, and the adjusting nut is fed against the auxiliary roller bearing of the bearing assembly. The corresponding auxiliary roller bearing of the adjusting nut is provided with a ring-shaped lubricating space. The main body The second lubricating channel leads to the annular lubricating space.

In the present invention, the auxiliary roller bearing is designed as an oblique roller, and the two adjacent sides respectively abut against the rear cover of the main body, the main shaft and the adjusting nut, and the lubricating oil passages are connected to the auxiliary roller bearing respectively. Two loaded adjacent sides of roller bearings;

The end of the lubricating oil passage can be opened outwards to make a vent hole. This vent hole can adopt a U-shaped design to waterproof and enter the interior, so that it can be observed from the outside whether the vent hole overflows oil when filling oil, so as to achieve the observation of the oil filling state. .

In the present invention, a brake assembly can be arranged between the main body and the main shaft, and a cooling assembly is located in the main body to cool the torque motor accordingly, and a position detection assembly is installed on the main body to sense the change in the rotational position of the main shaft. work;

The brake assembly mentioned above can be a cylinder assembled between the main body and the main shaft, and the main body side injects pressure to make the pressure cylinder exert pressure on the main shaft to achieve a braking effect.

Since the auxiliary roller bearing is against the back cover, the main shaft and the adjusting nut of the main body at the same time, the present invention lubricates the auxiliary roller bearing with the largest supporting load.

Due to the adoption of the above technical solution, the bearing lubrication structure of the direct drive torque motor device of the present invention can perform bearing lubrication with a simple structure and reduce maintenance costs.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the exterior view of the embodiment of the present invention;

Fig. 2 is a combined sectional view of an embodiment of the present invention;

Fig. 3 is an enlarged sectional view of an embodiment of the present invention.

Detailed ways

Please refer to Figures 1, 2 and 3 for the embodiment of the present invention. The bearing lubrication structure of the direct drive torque motor device of the present invention includes a main shaft 20, a brake assembly 30, a bearing assembly 40, a direct drive torque motor 50, a body 60, and an oil injection Component A, position detection component 70 and adjusting nut 80; its structure is described as follows:

The outer diameter of the main shaft 20 is gradually tapered from one end to the other end to make the first level 21, the second level 22, the third level 23, the fourth level 24 and an external thread segment 25, and the external thread segment 25 is made on The end of the main shaft 20 .

The inner side of the brake assembly 30 corresponds to the first level 21 of the main shaft 20 , and the outer side has a positioning portion 31 .

The bearing assembly 40 includes a first oil seal 41, a main bearing 42, a second oil seal 43 and an auxiliary roller bearing 44. The first oil seal 41 is installed between the brake assembly 30 and the main shaft 20, and the main bearing 42 is positioned On the second stage 22 of the main shaft 20, the main bearing 42 abuts to position the brake assembly 30, the second oil seal 43 is located on the third stage 23 of the main shaft 20, and the auxiliary roller bearing 44 is an angled roller The auxiliary roller bearing 44 is positioned on the fourth stage 24 , and the auxiliary roller bearing 44 abuts against the second oil seal 43 .

The direct drive torque motor 50 is composed of a mover fixing seat 51, a mover oil seal 52, a motor mover 53, a motor stator 54, and a motor cooling seat 55. The mover fixing seat 51 is positioned against the bearing Next to the main bearing 42 of the assembly 40, and the mover oil seal 52 and the motor mover 53 are fixed on the outside of the mover fixing seat 51, and the motor stator 54 is positioned inside by the motor cooling seat 55, and the motor stator 54 is sleeved on the Outside the motor mover 53.

The body 60 includes a shell 61 , a rear cover 62 and a rear cover oil seal 63 , the shell 61 is fixedly connected to the rear cover 62 , one end of the body 60 is fixed to the positioning portion 31 of the brake assembly 30 , the body 60 is connected to the main shaft 20 The main bearing 42 of the bearing assembly 40 is positioned between them, and the rear cover 62 is located outside the second oil seal 43 and the auxiliary roller bearing 44 of the bearing assembly 40, and the rear cover oil seal 63 is arranged inside the end of the rear cover 62 , and the shell 61 is located at the outermost side to accommodate the aforementioned components, and the shell 61 is fixed for the motor cooling seat 55 of the direct drive torque motor 50, and at least one lubricating oil passage 621 is opened in the rear cover 62, and the lubricating oil passage 621 Including the oil injection channel 6211, the first lubrication channel 6212, the second lubrication channel 6213 and the closing screw 6214, the closing screw 6214 is used to close the opening during manufacture, the oil injection channel 6211, the first lubrication channel 6212 and the second lubrication channel 6213 communicate with each other, and the oil injection passage 6211 is opened outward from the rear cover 62 and has an internal thread B, the first lubrication passage 6212 leads to the surface of the auxiliary roller bearing 44 of the bearing assembly 40, and the second lubrication passage 6213 leads to the On the other side surface of the auxiliary roller bearing 44 of the bearing assembly 40, a vent hole 6215 is opened outward at the end of the lubricating oil passage 621, and the vent hole 6215 adopts a U-shaped design to prevent water from entering.

The oil injection assembly A is installed on the internal thread B of the oil injection passage 6211 of the body 60 .

The position detection component 70 is fixed on the rear cover 62 of the main body 60 , and the position detection component 70 senses the change of the rotational position of the spindle 20 accordingly.

The adjusting nut 80 is screwed on the external thread section 25 at the end of the main shaft 20, and the adjusting nut 80 is positioned in the oil seal 63 of the rear cover of the main body 60, and the adjusting nut 80 is fed to tighten the bearing assembly 40. For the auxiliary roller bearing 44 , the adjusting nut 80 cooperates with the surface depression of the auxiliary roller bearing 44 to define an annular lubricating space 81 , and the second lubricating passage 6213 of the main body 60 leads to the annular lubricating space 81 .

The above is the structure, configuration and mutual positional relationship of the present invention, and the operation of the structure of the present invention is described below:

Since the main shaft 20 of the present invention is gradually tapered from one end to the other end, the first level 21, the second level 22, the third level 23, the fourth level 24 and an external thread section 25 are produced, and the external thread section 25 is formed on The end of the main shaft 20; and cooperate with the bearing assembly 40 to install and position the brake assembly 30, the direct drive torque motor 50, and the body 60 on the various levels of the main shaft 20 from one side, and finally use the adjusting nut 80 The external thread section 25 at the end of the main shaft 20 is screwed, and the adjusting nut 80 feeds against the auxiliary roller bearing 44 of the bearing assembly 40 .

Therefore, the adjusting nut 80 presses the auxiliary roller bearing 44 forward. The oblique roller design of the auxiliary roller bearing 44 pushes against the main shaft 20 and the rear cover 62 of the main body 60 at the same time, and fully supports the main shaft 20 Load strength and weight of each component on the board.

Since the lubricating oil passage 621 of the rear cover 62 utilizes the first lubricating passage 6212 and the second lubricating passage 6213 to provide sufficient lubrication for the surface of the auxiliary roller bearing 44 and the ring-shaped lubricating space 81, and cooperate with the flow of oil in the ring-shaped lubricating space 81, this The invention can give full play to the lubricating effect.

When the present invention is to perform oil injection and lubrication work, the user only needs to inject oil into the oil injection assembly A through oil injection, and the oil will enter the first lubrication channel 6212 and the second lubrication channel 6213 through the oil injection channel 6211 of the body 60, and Use the air vent 6215 at the end of the lubricating oil passage 621 to observe while filling the oil. If the oil overflows from the air vent 6215, it shows that the state of full oil filling has been reached.

In addition, the aforementioned annular lubricating space 81 may be formed by recessing the surface of the auxiliary roller bearing 44 and the surface of the adjusting nut 80 .

In summary, the main components of the present invention are the body, the direct drive torque motor, the main shaft, the bearing assembly, the adjusting nut and the oiling assembly;

Use the auxiliary roller bearing to resist between the back cover of the body, the main shaft and the adjusting nut, and a lubricating oil passage is opened on the back cover to reach the auxiliary roller bearing, and the lubricating oil passage leads to the back cover and the adjusting screw. There is an annular lubricating space between the caps, and the lubricating oil passage is installed outwardly.

Claims (8)

1. A bearing lubrication structure of a direct-drive torque motor device, characterized in that it comprises: The main body includes a back cover. At least one lubricating oil passage is opened in the back cover. The lubricating oil passage includes an oil injection passage, a first lubrication passage, and a second lubrication passage. The oil injection passage, the first lubrication passage and the second lubrication passage are mutually Connected, and the oil injection channel is open to the outside; A direct drive torque motor is installed in the body; The main shaft is installed in the direct drive torque motor, and the main shaft corresponds to the rear cover of the main body; The bearing assembly is arranged between the main shaft, the direct drive torque motor, and the main body. The bearing assembly has an auxiliary roller bearing, and the auxiliary roller bearing is against the back cover of the main body and the main shaft, and the main body The first lubricating passage of the lubricating oil passage leads to the surface of the auxiliary roller bearing, and the second lubricating passage of the main body leads to the other side surface of the auxiliary roller bearing; an oil injection assembly mounted on the oil injection passage of the body; and The adjusting nut is locked and fixed on the external thread at the end of the main shaft, and the adjusting nut is fed against the auxiliary roller bearing of the bearing assembly. The corresponding auxiliary roller bearing of the adjusting nut is provided with a ring-shaped lubricating space. The main body The second lubricating channel leads to the annular lubricating space. 2. The bearing lubrication structure of the direct-drive torque motor device according to claim 1, wherein the auxiliary roller bearing adopts a bevel roller type. 3. The bearing lubricating structure of direct-drive torque motor device as claimed in claim 1, is characterized in that: The outer diameter of the main shaft is tapered in order to produce the first level, the second level, the third level, the fourth level and the external thread segment; A brake assembly is also provided, the inner side of the brake assembly is positioned on the first level of the main shaft, and the outer side has a positioning portion; The bearing assembly also includes a first oil seal, a main bearing, and a second oil seal, the first oil seal is installed between the brake assembly and the main shaft, the main bearing is positioned on the second stage of the main shaft, and the main bearing is against the top positioning the brake assembly, the second oil seal is positioned on the third stage of the main shaft, the auxiliary roller bearing is positioned on the fourth stage, and the auxiliary roller bearing is abutted against the second oil seal; The direct drive torque motor is composed of a mover fixing seat, a mover oil seal, a motor mover, a motor stator and a motor cooling seat. The mover fixing seat is positioned next to the main bearing of the bearing assembly, and The mover oil seal and the motor mover are fixed outside the mover fixing seat, and the motor stator is installed in the motor cooling seat, and the motor stator is sleeved outside the motor mover; The body also includes a shell and a back cover oil seal, the shell is fixedly connected to the back cover, one end of the body is fixed to the positioning part of the brake assembly, and the main bearing of the bearing assembly is positioned between the body and the main shaft. The rear cover is positioned outside the second oil seal and the auxiliary roller bearing of the bearing assembly, and the rear cover oil seal is arranged on the inner side of the end of the rear cover, and the shell is located on the outermost side to accommodate the aforementioned components, and the shell is used for the direct drive torque motor The motor cooling seat is fixed; A position detection component is also provided, which is fixed on the back cover of the main body, and the position detection component senses the change of the rotational position of the main shaft accordingly. 4. The bearing lubrication structure of the direct-drive torque motor device as claimed in claim 1, characterized in that, the lubricating oil passage of the body is conveniently provided with a number of openings, and the openings are closed with closing screws . 5 . The bearing lubricating structure of the direct-drive torque motor device as claimed in claim 1 , wherein the end of the lubricating oil passage of the main body is opened outward to form a vent hole. 6 . 6 . The bearing lubricating structure of the direct-drive torque motor device according to claim 5 , wherein the vent hole adopts a U-shaped design to prevent water from entering. 7 . 7 . The bearing lubrication structure of the direct-drive torque motor device according to claim 1 , wherein the annular lubrication space of the adjusting nut is formed by a depression on the surface of the adjusting nut. 7 . 8 . The bearing lubrication structure of the direct drive torque motor device according to claim 1 , wherein the annular lubrication space of the adjusting nut is formed by recesses on the surfaces of both the adjusting nut and the auxiliary roller bearing.

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