CN221120865U - Cooling structure of hollow screw rod - Google Patents

Abstract

The utility model discloses a cooling structure of a hollow screw rod, which comprises the following components: the blind hole is arranged on the screw rod so as to enable the screw rod to be hollow; one end of the oil delivery pipe is inserted into the blind hole, an oil inlet channel is formed in the oil delivery pipe, and the outer part of the oil delivery pipe is matched with the blind hole to form an oil return channel; the support piece is provided with an oil return cavity, the oil return cavity is communicated with the oil return channel, the oil return cavity is provided with a positioning hole, a mounting hole and an oil outlet, the positioning hole is used for accommodating one end of the screw rod, the mounting hole is used for connecting the other end of the oil delivery pipe and communicating an external oil inlet pipeline, and the oil outlet is used for communicating the oil return cavity with the external oil outlet pipeline. The cooling structure of the hollow screw rod can reduce occupied space and is convenient for a motor to drive the screw rod to rotate.

Description

Cooling structure of hollow screw rod

Technical Field

The utility model relates to a structure of a screw rod, in particular to a cooling structure of a hollow screw rod.

Background

The ball screw is a transmission mechanism for converting the rotary motion of a motor into linear motion and comprises a screw rod and a nut sleeve.

The screw rod is a rod piece with external threads, the screw rod can rotate around the axis of the screw rod under the drive of the motor, the nut sleeve is sleeved on the screw rod, and meanwhile, the nut sleeve is fixed on the sliding part at the same time, so that the ball screw can convert the rotary motion of the motor into the linear motion of the sliding part.

In the transmission process, the screw rod and the nut sleeve are rubbed to generate heat, so that the screw rod is expanded to influence the transmission precision.

In this way, the screw rod can be processed into a hollow structure, and the two ends of the screw rod are communicated, so that one end of the screw rod flows into heat exchange oil, and the other end of the screw rod flows out of the heat exchange oil, thereby achieving the purpose of cooling the screw rod.

However, the arrangement occupies a large space and also affects the motor to drive the screw to rotate.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a cooling structure of a hollow screw rod, which can reduce the occupied space and is convenient for a motor to drive the screw rod to rotate.

According to an embodiment of the utility model, a cooling structure of a hollow screw rod comprises:

The blind hole is arranged on the screw rod so as to enable the screw rod to be hollow;

One end of the oil delivery pipe is inserted into the blind hole, an oil inlet channel is formed in the oil delivery pipe, and the outer part of the oil delivery pipe is matched with the blind hole to form an oil return channel;

The support piece is provided with an oil return cavity, the oil return cavity is communicated with the oil return channel, the oil return cavity is provided with a positioning hole, a mounting hole and an oil outlet, the positioning hole is used for accommodating one end of the screw rod, the mounting hole is used for connecting the other end of the oil delivery pipe and communicating an external oil inlet pipeline, and the oil outlet is used for communicating the oil return cavity with the external oil outlet pipeline.

According to the cooling structure of the hollow screw rod, the supporting piece comprises the supporting seat and the end cover, the supporting seat and the end cover are matched to form the oil return cavity, or the end cover forms the oil return cavity, the supporting seat is provided with the positioning hole, the end cover is provided with the mounting hole, and any one of the supporting seat and the end cover is provided with the oil outlet hole.

According to the cooling structure of the hollow screw rod, the end cover comprises the sleeve body and the cover body, the sleeve body is arranged between the cover body and the supporting seat, the cover body is provided with the mounting hole, and the inner side of the sleeve body is used for forming the oil return cavity.

According to the cooling structure of the hollow screw rod, the cover body or the sleeve body is provided with the oil outlet.

According to the cooling structure of the hollow screw rod, the inner side of the sleeve body is provided with the inner convex ring, the inner convex ring is provided with the sealing ring which abuts against the screw rod, and the oil outlet is positioned at one side, close to the cover body, of the inner convex ring.

According to the cooling structure of the hollow screw rod, the inner convex ring is provided with the step, the step is used for positioning the sealing ring, and the step is positioned on one side, close to the cover body, of the inner convex ring.

According to the cooling structure of the hollow screw rod, provided by the embodiment of the utility model, the limiting ring is arranged on one side, close to the cover body, of the inner convex ring, and the limiting ring is matched with the step to fix the sealing ring.

According to the cooling structure of the hollow screw rod, the supporting seat comprises the seat body and the pressing ring, the seat body is provided with the positioning hole, the positioning hole is provided with the bearing sleeved on the screw rod, the pressing ring is arranged at one end of the positioning hole to limit the bearing, and the end cover is arranged at one side of the pressing ring opposite to the positioning hole.

According to the cooling structure of the hollow screw rod, provided by the embodiment of the utility model, the screw sleeve is arranged on the inner side of the compression ring, the compression ring is used for limiting the outer ring of the bearing, and the screw sleeve is used for limiting the inner ring of the bearing.

According to the cooling structure of the hollow screw rod, the oil conveying pipe comprises a hard pipe or a soft pipe.

The cooling structure of the hollow screw rod provided by the embodiment of the utility model has at least the following beneficial effects:

1. The blind holes are formed, so that heat exchange oil is only fed into and discharged from one end of the screw rod, the other end of the screw rod is not occupied, the occupied space is reduced, and the motor is not influenced to be connected with the screw rod for transmission.

2. According to the utility model, the oil conveying pipe is arranged, so that the oil conveying pipe is inserted into the blind hole, and therefore, heat exchange oil flows in the blind hole, and the heat exchange efficiency is prevented from being influenced due to the fact that the heat exchange oil is static.

3. According to the utility model, the support piece is arranged, and the oil return cavity of the support piece is provided with the mounting hole, the positioning hole and the oil outlet hole, so that on one hand, one end of the screw rod can be supported and the oil delivery pipe can be fixed, the transmission requirement is met, on the other hand, the external oil inlet pipeline of the mounting hole and the external oil outlet pipeline of the oil outlet are prevented from rotating along with the screw rod, the abrasion leakage is reduced, and the reliability of the cooling structure is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 is a schematic structural view of a cooling structure of a hollow screw according to an embodiment of the present utility model;

Fig. 2 is a cut-away enlarged view of the cooling structure of fig. 1.

Reference numerals: 1-blind hole, 2-oil delivery pipe, 3-oil inlet duct, 4-oil return duct, 5-oil return chamber, 6-locating hole, 7-mounting hole, 8-oil outlet, 9-sleeve body, 10-lid, 11-inner convex ring, 12-sealing ring, 13-spacing ring, 14-pedestal, 15-clamping ring, 16-swivel nut.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A cooling structure of a hollow screw according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

Referring to fig. 1, the present utility model is directed to an embodiment of a cooling structure for a hollow screw.

In this embodiment, the cooling structure mainly involves a screw and a support member supporting one end of the screw, while the other end of the screw is used to connect with a motor to realize transmission,

Referring to fig. 2, specifically, the cooling structure further includes a blind hole 1, where the blind hole 1 is disposed on the screw so that the screw is hollow, and preferably, the blind hole 1 is a blind hole 1 disposed on an axis of the screw.

In addition, the cooling structure further comprises an oil conveying pipe 2, one end of the oil conveying pipe 2 is inserted into the blind hole 1, an oil inlet channel 3 is formed in the oil conveying pipe 2, and the oil conveying pipe 2 is matched with the blind hole 1 to form an oil return channel 4.

In some specific embodiments of the present utility model, a gap may be formed between the end of the oil delivery pipe 2 and the closed end of the blind hole 1, so that the heat exchange oil is convenient to flow out of the oil delivery pipe 2.

In some embodiments of the present utility model, the oil delivery pipe 2 may be a hard pipe, such as an aluminum pipe or an iron pipe, so that the heat exchange route of the heat exchange oil may be prolonged, and the heat exchange efficiency may be improved.

In some specific embodiments of the present utility model, the oil delivery pipe 2 may be made into a hose, without considering the problem of bending fracture of the oil delivery pipe 2 in the cantilever state, and hard contact between the oil delivery pipe 2 and the wall of the blind hole 1 may be avoided, so as to reduce friction.

Meanwhile, as the oil delivery pipe 2 is a hose, the oil delivery pipe 2 floats in heat exchange oil, so that contact between the oil delivery pipe 2 and the wall of the blind hole 1 is reduced, and friction loss is reduced.

In some embodiments of the present utility model, the oil delivery pipe 2 may be made as a wear-resistant hose, improving wear resistance and reducing the risk of blockage.

For the support piece, the cooling structure enables the support piece to be provided with an oil return cavity 5, the oil return cavity 5 is communicated with an oil return duct 4, the oil return cavity 5 is provided with a positioning hole 6, a mounting hole 7 and an oil outlet hole 8, the positioning hole 6 is used for accommodating one end of a screw rod, the mounting hole 7 is used for connecting the other end of an oil conveying pipe 2 and communicating an external oil inlet pipeline, and the oil outlet hole 8 is used for communicating the oil return cavity 5 with the external oil outlet pipeline.

To sum up, first, the blind hole 1 is provided in this embodiment, so that the heat exchange oil is only introduced into and discharged from one end of the screw rod, the other end of the screw rod is not occupied, the occupied space is reduced, and the motor is not influenced to be connected with the screw rod for transmission.

Secondly, in this embodiment, the oil delivery pipe 2 is arranged, so that the oil delivery pipe 2 is inserted into the blind hole 1, and therefore, heat exchange oil flows in the blind hole 1, and heat exchange oil is prevented from being static to affect heat exchange efficiency.

Furthermore, this embodiment is through setting up support piece, and support piece's oil return chamber 5 sets up mounting hole 7, locating hole 6 and oil outlet 8, on the one hand, can support the one end of lead screw and fixed oil delivery pipe 2, satisfies the transmission needs, on the other hand, avoids the outside oil feed pipeline of mounting hole and the outside oil outlet pipeline of oil-out to follow the lead screw rotation, reduces wearing and tearing leakage, improves cooling structure's reliability.

In some specific embodiments of the present utility model, the support member may include a support seat and an end cover, where the support seat and the end cover cooperate to form the oil return chamber 5, or the end cover forms the oil return chamber 5, and the support seat is provided with a positioning hole 6 and the end cover is provided with a mounting hole 7.

It is easy to understand that this embodiment is through setting up supporting seat and end cover, on the one hand, can utilize the supporting seat to support the one end of lead screw to satisfy the transmission needs, on the other hand, can utilize the end cover, or the cooperation of end cover and supporting seat, conveniently form oil return chamber 5 and carry out dismouting maintenance, still conveniently pack into or demolish oil pipe 2, reduce the degree of difficulty of installation maintenance.

In some embodiments of the present utility model, the support base may be provided with the oil outlet hole 8.

It is easy to understand that, in this embodiment, through setting up oil outlet 8 at the supporting seat, simplify the structure of end cover, still conveniently utilize the inner space of supporting seat to form oil return chamber 5, compact structure, occupation space is few.

In some embodiments of the utility model, the end cap may be provided with an oil outlet hole 8.

It is easy to understand that this embodiment can make outside oil outlet pipeline keep away from the supporting seat through setting up oil outlet 8 at the end cover, does not hinder the installation of supporting seat, simultaneously, even if oil leak problem appears, only dismouting and maintenance end cover can, easy to maintain to, do not need to dismantle the supporting seat, do not influence the atress of lead screw, for example, the lathe mill generally need be pre-tensioned in order to reduce transmission clearance to the lead screw.

In some specific embodiments of the present utility model, the end cover may include a sleeve body 9 and a cover body 10, where the sleeve body 9 is disposed between the cover body 10 and the supporting seat, and the cover body 10 is provided with a mounting hole 7, and an inner side of the sleeve body 9 is used to form the oil return cavity 5.

It is easy to understand that in this embodiment, the cover has the sleeve body 9 and the cover body 10, so on one hand, the sleeve body 9 forms the oil return cavity 5 to meet the requirement of storing heat exchange oil, and on the other hand, the cover body 10 is used for installing the oil delivery pipe 2, so that the difficulty of fixing the oil delivery pipe 2 is reduced.

In some embodiments of the present utility model, the sleeve 9 may be provided with the oil outlet hole 8.

It is easy to understand that, in this embodiment, by arranging the oil outlet hole 8 on the sleeve body 9, the structure of the cover body 10 can be simplified, and the distance between the oil outlet hole 8 and the cover body 10 and the supporting seat is moderate, so that the disassembly and assembly are convenient.

In some embodiments of the present utility model, the cover 10 may be provided with the oil outlet hole 8.

It is easy to understand that, in this embodiment, the oil outlet hole 8 is formed in the cover 10, so that the external oil inlet pipe, the oil delivery pipe 2 and the external oil outlet pipe can be assembled and disassembled together with the cover 10, the integration level is improved, the assembly and maintenance are easy, the operation difficulty is reduced, and especially, the time for occupying equipment such as a machine tool is reduced.

In some specific embodiments of the present utility model, the inner side of the sleeve body 9 may be provided with an inner convex ring 11, the inner convex ring 11 is provided with a sealing ring 12 abutting against the screw rod, and the oil outlet 8 is located on one side of the inner convex ring 11 close to the cover body 10.

It is easy to understand that the inner convex ring 11 and the sealing ring 12 are arranged in the embodiment, so that the sleeve body 9, the cover body 10 and the screw rod can be utilized to form the oil return cavity 5, the occupation of a supporting seat is avoided, and the transmission arrangement of the screw rod is not affected, such as the arrangement of a bearing and the pretension of the screw rod.

In some embodiments of the present utility model, the sleeve 9 may be formed with a cavity on both sides of the inner collar 11, so that other structures may be conveniently arranged.

It is easy to understand that the position of the inner convex ring 11 is adjusted in the embodiment, so that the requirement of forming the oil return cavity 5 is met, and the arrangement requirement of parts of the bearing on the limit screw rod can be considered.

In some embodiments of the present utility model, the inner collar 11 may be provided with a step for positioning the seal ring 12, the step being located on the side of the inner collar 11 adjacent to the cover 10.

It is easy to understand that the step is provided in this embodiment, so that the sealing ring 12 can be installed from one side of the cover body 10, and the sealing ring 12 is prevented from being arranged on the inner convex ring 11 in a clamping sleeve manner, so that the installation difficulty is increased, that is, the sleeve body 9 does not need to be detached when the sealing ring 12 is installed.

In some specific embodiments of the present utility model, a limiting ring 13 may be installed on the side of the inner convex ring 11 near the cover body 10, and the limiting ring 13 is matched with the step to fix the sealing ring 12.

It is easy to understand that the present embodiment is provided with the stopper ring 13, thereby covering a part of the inner side of the step, and further, restricting the seal ring 12 to the inner side of the step, preventing the seal ring 12 from exiting the step during the screw rotation to cause leakage.

In some specific embodiments of the present utility model, the support base may include a base 14 and a pressing ring 15, where the base 14 is provided with a positioning hole 6, the positioning hole 6 is provided with a bearing sleeved on a screw rod, the pressing ring 15 is installed at one end of the positioning hole 6 to limit the bearing, and the end cover is installed at a side of the pressing ring 15 facing away from the positioning hole 6.

It is easy to understand that the supporting seat has the seat body 14 and the pressing ring 15, so that the requirement of setting the bearing can be met, the pressing ring 15 is utilized to install the end cover, and an additional installation structure is not required to be arranged on the seat body 14, so that the space is saved, and the increase of the external dimension of the seat body 14 is avoided.

In some embodiments of the present utility model, the inner side of the compression ring 15 may be provided with a threaded sleeve 16, the compression ring 15 being used for limiting the outer ring of the bearing, and the threaded sleeve 16 being used for limiting the inner ring of the bearing.

It is easy to understand that the screw sleeve 16 is arranged in the embodiment, so that the bearing limit can be adjusted by adjusting the position of the screw sleeve 16 on the screw rod, the use requirement is met, and meanwhile, the internal space of the sleeve body 9 is fully utilized, and the structure is compact.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A cooling structure of a hollow screw, comprising:

A blind hole (1) arranged on the screw rod so as to enable the screw rod to be hollow;

One end of the oil delivery pipe (2) is inserted into the blind hole (1), an oil inlet channel (3) is formed in the oil delivery pipe (2), and the outer part of the oil delivery pipe (2) is matched with the blind hole (1) to form an oil return channel (4);

The support piece is provided with an oil return cavity (5), the oil return cavity (5) is communicated with the oil return channel (4), the oil return cavity (5) is provided with a positioning hole (6), a mounting hole (7) and an oil outlet (8), the positioning hole (6) is used for accommodating one end of the screw rod, the mounting hole (7) is used for connecting the other end of the oil delivery pipe (2) and communicating an external oil inlet pipeline, and the oil outlet (8) is used for communicating the oil return cavity (5) with the external oil outlet pipeline.

2. A cooling structure of a hollow screw according to claim 1, characterized in that the support comprises a support seat and an end cover, the support seat and the end cover cooperate to form the oil return cavity (5), or the end cover forms the oil return cavity (5), the support seat is provided with the positioning hole (6), the end cover is provided with the mounting hole (7), and any one of the support seat and the end cover is provided with the oil outlet hole (8).

3. A cooling structure of a hollow screw according to claim 2, characterized in that the end cap comprises a sleeve body (9) and a cover body (10), the sleeve body (9) is arranged between the cover body (10) and the supporting seat, the cover body (10) is provided with the mounting hole (7), and the inner side of the sleeve body (9) is used for forming the oil return cavity (5).

4. A cooling structure of a hollow screw according to claim 3, characterized in that the cover (10) or the sleeve (9) is provided with the oil outlet (8).

5. The cooling structure of a hollow screw rod according to claim 4, wherein an inner convex ring (11) is arranged on the inner side of the sleeve body (9), a sealing ring (12) abutting against the screw rod is arranged on the inner convex ring (11), and the oil outlet (8) is positioned on one side, close to the cover body (10), of the inner convex ring (11).

6. A cooling structure of a hollow screw according to claim 5, characterized in that the inner collar (11) is provided with a step for positioning the sealing ring (12), said step being located on the side of the inner collar (11) close to the cover (10).

7. The cooling structure of a hollow screw rod according to claim 6, wherein a limiting ring (13) is installed on one side of the inner convex ring (11) close to the cover body (10), and the limiting ring (13) is matched with the step to fix the sealing ring (12).

8. The cooling structure of a hollow screw rod according to claim 2, wherein the supporting seat comprises a seat body (14) and a pressing ring (15), the seat body (14) is provided with the positioning hole (6), the positioning hole (6) is provided with a bearing sleeved on the screw rod, the pressing ring (15) is arranged at one end of the positioning hole (6) to limit the bearing, and the end cover is arranged at one side of the pressing ring (15) opposite to the positioning hole (6).

9. The cooling structure of the hollow screw rod according to claim 8, wherein a threaded sleeve (16) is arranged on the inner side of the pressing ring (15), the pressing ring (15) is used for limiting the outer ring of the bearing, and the threaded sleeve (16) is used for limiting the inner ring of the bearing.

10. A cooling structure of a hollow screw according to claim 1, characterized in that the oil delivery pipe (2) comprises a hard pipe or a hose.