阅读说明：本技术 一种用于小直径电主轴的双循环冷却系统 (Double-circulation cooling system for small-diameter electric spindle ) 是由 李文兴 于 2021-10-13 设计创作，主要内容包括：本发明公开了一种用于小直径电主轴的双循环冷却系统,包括前端轴承座、主轴壳体和后端轴承座；所述前端轴承座和后端轴承座分别连接于主轴壳体前后两端；所述后端轴承座内嵌设有后端循环水道壳体,所述后端循环水道壳体设有冷却水入口和冷却水出口；所述前端轴承座内嵌设有前端循环水道壳体,所述主轴壳体内部设有进水通道和回水通道；所述进水通道两端分别对应于冷却水入口和前端循环水道壳体,所述回水通道两端分别对应于冷却水出口和前端循环水道壳体；设置进水通道和回水通道,使冷却水流经主轴壳体的形成增加,加大冷却水的流量；通过设置多个储水腔不断旋转对进水通道供水可以均匀分配冷却水,使多组进水通道均匀冷却主轴壳体。(The invention discloses a double-circulation cooling system for a small-diameter electric main shaft, which comprises a front-end bearing seat, a main shaft shell and a rear-end bearing seat, wherein the front-end bearing seat is provided with a front-end bearing seat; the front end bearing block and the rear end bearing block are respectively connected to the front end and the rear end of the main shaft shell; a rear-end circulating water channel shell is embedded in the rear-end bearing seat and provided with a cooling water inlet and a cooling water outlet; a front-end circulating water channel shell is embedded in the front-end bearing seat, and a water inlet channel and a water return channel are arranged in the spindle shell; the two ends of the water inlet channel correspond to the cooling water inlet and the front end circulating water channel shell respectively, and the two ends of the water return channel correspond to the cooling water outlet and the front end circulating water channel shell respectively; a water inlet channel and a water return channel are arranged, so that cooling water flows through the spindle shell to be increased, and the flow of the cooling water is increased; the water supply to the water inlet channels can be realized by continuously rotating the plurality of water storage cavities, so that cooling water can be uniformly distributed, and the spindle shell can be uniformly cooled by the plurality of groups of water inlet channels.)

1. A dual cycle cooling system for a small diameter electric spindle, characterized by: comprises a front end bearing seat (1), a main shaft shell (2) and a rear end bearing seat (3); the front end bearing seat (1) and the rear end bearing seat (3) are respectively connected to the front end and the rear end of the main shaft shell (2); a rear-end circulating water channel shell (41) is embedded in the rear-end bearing seat (3), and the rear-end circulating water channel shell (41) is provided with a cooling water inlet (31) and a cooling water outlet (32); a front-end circulating water channel shell (51) is embedded in the front-end bearing seat (1), and a water inlet channel (21) and a water return channel (52) are arranged in the main shaft shell (2); the two ends of the water inlet channel (21) correspond to the cooling water inlet (31) and the front end circulating water channel shell (51) respectively, and the two ends of the water return channel (52) correspond to the cooling water outlet (32) and the front end circulating water channel shell (51) respectively.

2. A dual cycle cooling system for a small diameter electric spindle according to claim 1, wherein: cooling water entry (31) and cooling water export (32) communicate in cooling water hole (411) of rear end circulating water way casing (41) inner wall, rear end circulating water way casing (41) inner circle is equipped with axis body (42), axis body (42) week side hoop evenly is equipped with sealed baffle (421), and is adjacent form water storage chamber (422) jointly with rear end circulating water way casing (41) inner wall between sealed baffle (421).

3. A dual cycle cooling system for a small diameter electric spindle according to any one of claims 1 or 2, wherein: a plurality of cooling holes (43) are formed in the inner wall of the rear-end circulating water channel shell (41) in the circumferential direction, and the cooling holes (43) are communicated with the water inlet channel (21); the cooling hole (43) corresponds to the water storage cavity (422).

4. A dual cycle cooling system for a small diameter electric spindle according to claim 1, wherein: the inner wall of the front-end circulating water channel shell (51) is annularly provided with a plurality of grooves (53), and the bottoms of the grooves (53) are arranged at the communication positions of the water inlet channel (21) and the water return channel (52) and the front-end circulating water channel shell (51).

5. A dual cycle cooling system for a small diameter electric spindle according to claim 4, wherein: the inner wall of the front-end circulating water channel shell (51) is attached with a ring sealing plate (511), and the ring sealing plate (511) covers the notch of the groove (53).

Technical Field

The invention relates to the technical field of electric spindle cooling, in particular to a double-circulation cooling system for a small-diameter electric spindle.

Background

The electric spindle is a new technology which integrates a machine tool spindle and a spindle motor into a whole and appears in the field of numerical control machines, and comprises the electric spindle and accessories thereof, including an electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like. The rotor of the motor is directly used as the main shaft of the machine tool, the shell of the main shaft unit is the motor base, and the motor and the main shaft of the machine tool are integrated by matching with other parts. The electric spindle is also a main heating source of the machine tool, so that the electric spindle needs to be effectively supported to dissipate heat in time, otherwise, the machining precision is reduced due to overheating deformation, and even the equipment is damaged. The cooling of the electric spindle mainly adopts a water cooling mode, the existing water cooling scheme generally adopts single-cycle cooling, and for the electric spindle with a small diameter, the cooling water channel needs to be correspondingly reduced in size, so that the cooling water flow is reduced, and the heat dissipation efficiency is poor.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the double-circulation cooling system for the small-diameter electric spindle, which can effectively increase the flow of cooling water on the basis of a small-size cooling water channel and improve the heat dissipation effect of the small-diameter electric spindle.

The technical scheme is as follows: in order to achieve the above object, the present invention provides a dual cycle cooling system for a small diameter electric spindle, comprising a front end bearing seat, a spindle housing and a rear end bearing seat; the front end bearing block and the rear end bearing block are respectively connected to the front end and the rear end of the main shaft shell; a rear-end circulating water channel shell is embedded in the rear-end bearing seat and provided with a cooling water inlet and a cooling water outlet; a front-end circulating water channel shell is embedded in the front-end bearing seat, and a water inlet channel and a water return channel are arranged in the spindle shell; the two ends of the water inlet channel correspond to the cooling water inlet and the front end circulating water channel shell respectively, and the two ends of the water return channel correspond to the cooling water outlet and the front end circulating water channel shell respectively.

Further, cooling water entry and cooling water export communicate in the cooling water hole of rear end circulating water way shells inner wall, rear end circulating water way shells inner circle is equipped with the axis body, axis body week side hoop evenly is equipped with sealed partition, and is adjacent form the water storage chamber jointly with rear end circulating water way shells inner wall between the sealed partition.

Furthermore, a plurality of cooling holes are annularly formed in the inner wall of the shell of the rear-end circulating water channel, and the cooling holes are communicated with the water inlet channel; the cooling hole corresponds to the water storage cavity.

Furthermore, a plurality of grooves are annularly arranged on the inner wall of the front-end circulating water channel shell, and the bottoms of the grooves are arranged at the positions where the water inlet channel and the water return channel are communicated with the front-end circulating water channel shell.

Furthermore, the inner wall of the front-end circulating water channel shell is provided with a ring sealing plate in an attached mode, and the ring sealing plate covers the notch of the groove.

Has the advantages that: the double-circulation cooling system for the small-diameter electric spindle can effectively increase the flow of cooling water on the basis of a small-size cooling water channel and improve the heat dissipation effect of the small-diameter electric spindle, and comprises the following technical effects:

1) a water inlet channel and a water return channel are arranged, so that cooling water flows through the spindle shell to be increased, and the flow of the cooling water is increased;

2) cooling water can be uniformly distributed by arranging a plurality of water storage cavities to continuously rotate to supply water to the water inlet channels, so that the spindle shell is uniformly cooled by a plurality of groups of water inlet channels;

3) set up every inhalant canal and only correspond and carry out the water injection in the place recess, avoid a plurality of delivery ports of cooling water combined action to produce the convection current and lead to the circulation efficiency to reduce, can promote the radiating effect.

Drawings

FIG. 1 is a side cross-sectional view of the present invention;

FIG. 2 is a block diagram of a cooling water inlet and a cooling water outlet according to the present invention;

FIG. 3 is a structural view of the rear-end circulation water passage housing of the present invention;

fig. 4 is a structural view of a front-end circulation water passage housing of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in figures 1-4: a double circulation cooling system for a small-diameter electric main shaft comprises a front-end bearing seat 1, a main shaft shell 2 and a rear-end bearing seat 3; the front end bearing seat 1 and the rear end bearing seat 3 are respectively connected to the front end and the rear end of the main shaft shell 2; a rear-end circulating water channel shell 41 is embedded in the rear-end bearing seat 3, and the rear-end circulating water channel shell 41 is provided with a cooling water inlet 31 and a cooling water outlet 32; a front-end circulating water channel shell 51 is embedded in the front-end bearing seat 1, and a water inlet channel 21 and a water return channel 52 are arranged in the main shaft shell 2; the two ends of the water inlet channel 21 respectively correspond to the cooling water inlet 31 and the front end circulating water channel shell 51, and the two ends of the water return channel 52 respectively correspond to the cooling water outlet 32 and the front end circulating water channel shell 51; cooling water enters the rear-end circulating water channel shell 41 from the cooling water inlet 31, enters the front-end circulating water channel shell 51 through the water inlet channel 21 after being gathered, flows back to the rear-end circulating water channel shell 41 through the water return channel 52 and is discharged through the cooling water outlet 32; the cooling water circulation stroke can be increased through the water inlet channel 21 and the water return channel 52, and the whole cooling effect is increased.

The cooling water inlet 31 and the cooling water outlet 32 are communicated with a cooling water hole 411 on the inner wall of the rear-end circulating water channel shell 41, a shaft body 42 is arranged on the inner ring of the rear-end circulating water channel shell 41, sealing partition plates 421 are circumferentially and uniformly arranged on the peripheral side of the shaft body 42, and a water storage cavity 422 is formed between adjacent sealing partition plates 421 and the inner wall of the rear-end circulating water channel shell 41; with the rotation of the shaft body 42 driven by power equipment, each water storage cavity 422 rotates along the inner wall of the rear-end circulating water channel shell 41, when the water storage cavity 422 rotates to the position of the cooling water hole 411, cooling water is filled in the water storage cavity 422, with the rotation of the water storage cavity 422, the cooling water in the cavity is sent to the cooling hole 43 and enters the water inlet channel 21, and the water inlet channel 21 is supplied with water by continuously rotating the plurality of water storage cavities 422, so that the cooling water can be uniformly distributed, and the spindle shell 2 can be uniformly cooled by the plurality of groups of water inlet channels 21; the cooling water can cool off main shaft housing 2 simultaneously when flowing in inhalant canal 21, and later the cooling water gets into the recess 53 of front end circulating water way casing 51, because the sealed effect of ring shrouding 511 in recess 53, makes inhalant canal 21 only correspond the return water passageway 52 in the recess 53 of place, avoids a plurality of delivery ports of cooling water effects to produce the convection current and leads to the circulation efficiency to reduce, make the radiating effect worsen.

A plurality of cooling holes 43 are annularly formed in the inner wall of the rear-end circulating water channel shell 41, and the cooling holes 43 are communicated with the water inlet channel 21; the cooling hole 43 corresponds to the water storage chamber 422.

The inner wall of the front-end circulating water channel shell 51 is annularly provided with a plurality of grooves 53, and the bottoms of the grooves 53 are arranged at the communication positions of the water inlet channel 21, the water return channel 52 and the front-end circulating water channel shell 51.

The inner wall of the front-end circulating water channel shell 51 is provided with a ring sealing plate 511 in an adhering manner, and the ring sealing plate 511 is covered on the notch of the groove 53.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.