CN111889713A

CN111889713A - Electric spindle

Info

Publication number: CN111889713A
Application number: CN202010815160.7A
Authority: CN
Inventors: 孙佳佳
Original assignee: Yamamoto Seiko Tool Co ltd
Current assignee: Yamamoto Seiko Tool Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-11-06

Abstract

The invention discloses an electric spindle which comprises a shell, a spindle, a bearing arranged between the shell and the spindle and a cooling device. The cooling device comprises an annular cooling pipeline, a cooling pump, a cooling box and a temperature sensor which are arranged in the shell. The cooling pump and the cooling box are arranged outside the shell. The cooling pipeline is two first cooling pipelines and two second cooling pipelines side by side. The first pipe inlet of the first cooling pipeline and the first pipe outlet of the second cooling pipeline are arranged on one side of the side face of the shell, and the first pipe outlet of the first cooling pipeline and the second pipe inlet of the second cooling pipeline are arranged on the other side of the side face of the shell.

Description

Electric spindle

Technical Field

The invention relates to the field of machining, in particular to an electric spindle.

Background

For processing machines such as machine tools and lathes, a processing spindle is an essential part of the machine, most of the traditional processing spindles are driven to rotate by a motor through a transmission belt, so that not only is the noise high, but also the energy loss is large, and the processing precision is not enough.

In recent years, electric spindles have become popular, and the electric spindles have advantages over traditional machining spindles in terms of volume, machining efficiency, noise and the like. But for the electric spindle, the heat dissipation thereof is one of the most problems to be solved.

Disclosure of Invention

The invention mainly aims to provide an electric spindle with better heat dissipation capability.

The invention provides an electric spindle, which comprises a shell, a spindle, a bearing arranged between the shell and the spindle, and a cooling device connected with the shell and used for cooling the spindle; the cooling device comprises an annular cooling pipeline and a cooling pump which are arranged in the shell; the cooling pipeline is a first cooling pipeline and a second cooling pipeline which are arranged side by side, a first pipe inlet of the first cooling pipeline and a first pipe outlet of the second cooling pipeline are arranged on one side of the side surface of the shell, and a first pipe outlet of the first cooling pipeline and a second pipe inlet of the second cooling pipeline are arranged on the other side of the side surface of the shell; the flow directions of the cooling liquid in the first cooling pipeline and the second cooling pipeline are opposite.

Preferably, the cooling pump is a double-head brushless pump, the double-head brushless pump includes double-head brushless motor and sets up the cooling pump body at double-head brushless motor both ends, every be provided with one separately on the cooling pump body and advance liquid head and one go out the liquid head, two the cooling pump body is respectively through on self advance liquid head body with go out the liquid head body with first cooling tube and the second cooling tube is connected.

Preferably, the cooling device further comprises a cooling tank for storing the cooling liquid, the liquid inlet head of the cooling pump is connected with the cooling tank, and the liquid outlet head is connected with the cooling pipeline.

Preferably, the cooling liquid is No. 2 engine oil, No. 3 engine oil or white mineral oil.

Preferably, the first nozzle and the second nozzle are respectively provided with a temperature sensor.

The electric spindle has the beneficial effects that:

1. the inlet pipe mouth and the outlet pipe mouth of the cooling pipeline of traditional electric main shaft all set up in one side of casing, and the cooling pipeline comes out after encircling the round, and such design radiating effect is not good enough, and the radiating effect of different positions is different, and the main shaft distal end still can have certain long-pending heat. The cooling liquid is fed into the two sides, so that heat dissipation is more uniform, a better heat dissipation effect is achieved, and the service life of the main shaft is prolonged.

2. The two temperature sensors are used, the temperatures of the two outlet pipes can be tested simultaneously, and finally, the two temperatures are displayed on the display screen simultaneously, so that a user can better judge the use state of the electric spindle.

3. The double-head brushless pump is used for simultaneously supplying liquid to the two cooling pipelines, on one hand, the purpose of saving volume and cost can be achieved, and in addition, the liquid flow rates of the two sides can be enabled to be consistent through the use of the same motor, so that a better heat dissipation effect can be achieved.

Drawings

FIG. 1 is a front view of an electric spindle of the present invention;

FIG. 2 is a schematic structural view of a housing of the electric spindle of the present invention;

FIG. 3 is a schematic view of the cooling pump of the motorized spindle of the present invention;

reference numbers in the figures: 1. casing, 2, main shaft, 3, first cooling tube, 4, second cooling tube, 5, temperature sensor, 6, double-end brushless motor, 7, cooling pump body, 31, first mouth of pipe, 32, first mouth of pipe, 41, second mouth of pipe, 42, second mouth of pipe, 71, play liquid head, 72, the liquid head that advances.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 2, an embodiment of an electric spindle of the present invention is provided:

an electric spindle. Comprising a shell 1, a main shaft 2, a bearing arranged between the shell 1 and the main shaft 2 and a cooling device.

The cooling device comprises an annular cooling duct, a cooling pump, a cooling tank and a temperature sensor 5 arranged in the housing 1. The cooling pump and the cooling tank are disposed outside the casing 1.

The cooling pipeline is a first cooling pipeline 3 and a second cooling pipeline 4 which are arranged side by side. The first inlet nozzle 31 of the first cooling duct 3 and the first outlet nozzle 42 of the second cooling duct 4 are disposed on one side of the side surface of the housing 1, and the first outlet nozzle 32 of the first cooling duct 3 and the second inlet nozzle 41 of the second cooling duct 4 are disposed on the other side of the side surface of the housing 1.

The cooling pump is a double-head brushless pump, the double-head brushless pump comprises a double-head brushless motor 6 and cooling pump bodies 7 arranged at two ends of the double-head brushless motor 6, and each cooling pump body is provided with a liquid inlet head 72 and a liquid outlet head 71 independently.

The liquid inlet 72 of the cooling pump body 7 is connected with the cooling box, the liquid outlet 71 of the cooling pump body 7 is connected with the pipe inlet of the cooling pipeline, and the pipe outlet of the cooling pipeline is connected with the cooling box after being connected with the temperature sensor 5. The user can directly replace or add cooling liquid in the cooling box.

The electric spindle has the beneficial effects that:

1. the inlet pipe mouth and the outlet pipe mouth of the cooling pipeline of traditional electric main shaft all set up in one side of casing 1, and the cooling pipeline comes out after encircling the round, and such design radiating effect is not good enough, and the radiating effect of different positions is different, and the main shaft distal end still can have certain long-pending heat. The cooling liquid is fed through two sides, so that heat dissipation is more uniform, a better heat dissipation effect is achieved, and the service life of the main shaft 2 is prolonged.

2. Two temperature sensors 5 are used, the temperature of two outlet pipes can be tested simultaneously, and finally two temperatures are displayed on a display screen simultaneously, so that a user can better judge the use state of the electric spindle.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.

Claims

1. An electric spindle comprises a shell, a spindle, a bearing arranged between the shell and the spindle, and a cooling device connected with the shell and used for cooling the spindle; the cooling device is characterized by comprising an annular cooling pipeline and a cooling pump which are arranged in the shell; the cooling pipeline is a first cooling pipeline and a second cooling pipeline which are arranged side by side, a first pipe inlet of the first cooling pipeline and a first pipe outlet of the second cooling pipeline are arranged on one side of the side surface of the shell, and a first pipe outlet of the first cooling pipeline and a second pipe inlet of the second cooling pipeline are arranged on the other side of the side surface of the shell; the flow directions of the cooling liquid in the first cooling pipeline and the second cooling pipeline are opposite.

2. The electric spindle of claim 1, wherein the cooling pump is a double-head brushless pump, the double-head brushless pump comprises a double-head brushless motor and cooling pump bodies disposed at two ends of the double-head brushless motor, each cooling pump body is separately provided with a liquid inlet head and a liquid outlet head, and the two cooling pump bodies are respectively connected with the first cooling pipe and the second cooling pipe through the liquid inlet head body and the liquid outlet head body on the cooling pump bodies.

3. The motorized spindle of claim 2, further comprising a cooling tank for storing said cooling fluid, said fluid inlet of said cooling pump being connected to said cooling tank, said fluid outlet being connected to said cooling conduit.

4. The motorized spindle of claim 1, wherein the coolant is a number 2 engine oil, a number 3 engine oil, or a white mineral oil.

5. The electric spindle according to claim 1, characterized in that one temperature sensor is arranged on each of said first outlet nozzle and said second outlet nozzle.