CN113953851A

CN113953851A - Spindle with temperature-controllable rotating shaft

Info

Publication number: CN113953851A
Application number: CN202111394699.0A
Authority: CN
Inventors: 陈耀龙
Original assignee: Suzhou Chenna Automation Technology Co ltd
Current assignee: Suzhou Chenna Automation Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-01-21

Abstract

The invention discloses a spindle with a controllable temperature of a rotating shaft, which comprises a sleeve and a cooling liquid box, wherein the sleeve is connected with a front bearing seat and a rear bearing seat, the rotating shaft is arranged at the front bearing seat, a cooling liquid inlet and outlet connecting piece is arranged at the rear bearing seat, a cooling liquid inlet hole and a cooling liquid return hole are arranged on the cooling liquid inlet and outlet connecting piece, a two-channel rotary connecting joint is arranged at the end part of the cooling liquid inlet and outlet connecting piece, the cooling liquid inlet hole and the cooling liquid return hole are communicated with a connecting groove, and the cooling liquid box is communicated with the two-channel rotary connecting joint through a circulating pump and a throttle valve. According to the invention, the rotating shaft is adopted for cooling, so that locking of the rotating shaft and the bearing bush caused by temperature rise is reduced to the maximum extent, the scrapping probability of the main shaft is reduced, the cooling circulation same as that of the stator cooling device is used, the cooling cost is effectively reduced, the cooling pore channel is additionally arranged in the rotating shaft, the number of external parts is reduced, and the probability of part interference is reduced.

Description

Spindle with temperature-controllable rotating shaft

Technical Field

The invention relates to the technical field of rotating shafts, in particular to a spindle with a controllable rotating shaft temperature.

Background

The main shaft is a core component in mechanical equipment, and the rotation precision, particularly the axle center position precision of the main shaft is one of very critical parameters in the service process. In applications where the accuracy requirements are high, hydrostatic spindles are often used in addition to precision rolling bearings. The lubricating performance and the rotation precision of the oil hydrostatic spindle have great relations with the ambient temperature, the load size and the spindle rotating speed. When the environmental temperature is lower than the designed use environmental temperature, for example, the temperature below zero in winter, the spindle may not normally operate or be damaged due to the high viscosity of the lubricating oil; or when the spindle runs at high speed under the action of a large load after being started, the local temperature of a spindle bearing is increased, so that the axial center position of the spindle is deviated, and the use requirement cannot be met.

However, the temperature of the fixed parts of the spindle can only be kept basically stable, the temperature of the rotating shaft can be gradually increased when the spindle runs at a high speed, the diameter of the rotating shaft is gradually increased, the oil film gap between the rotating shaft and the bearing bush is reduced, the heat productivity of the oil film is further accelerated, a vicious circle is formed, and finally the locking of the rotating shaft and the bearing bush occurs, and the spindle is scrapped. This problem has limited the use of precision hydrostatic spindles for high speed operation.

Disclosure of Invention

The invention aims to: in order to solve the problems, a spindle with a controllable temperature of a rotating shaft is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a controllable main shaft of pivot temperature, includes sleeve and coolant liquid case, muffjoint has front bearing frame and rear bearing frame, front bearing frame department is equipped with the pivot, rear bearing frame department is equipped with coolant liquid business turn over connecting piece, be equipped with coolant liquid manhole and coolant liquid return hole on the coolant liquid business turn over connecting piece, coolant liquid business turn over connecting piece tip is equipped with two pass rotary connection and connects, coolant liquid manhole and coolant liquid return hole intercommunication have the spread groove, the coolant liquid case passes through circulating pump and choke valve and two pass rotary connection and connects the intercommunication, the both sides of pivot are equipped with left thrust plate and right thrust plate respectively, the pivot is connected with the axle bush.

Preferably, the coolant inlet hole and the coolant return hole are connected by a connection groove or an internal connection hole at the front end of the rotation shaft.

Preferably, the liquid inlet of the two-channel rotary connecting joint is connected with the liquid outlet of the temperature control cooling liquid tank, and the liquid outlet of the two-channel rotary connecting joint is connected with the liquid inlet of the cooling liquid tank.

Preferably, the temperature of the cooling liquid in the cooling liquid tank is adjusted manually or automatically.

Preferably, the circulation pump and the throttle valve control the flow of the cooling liquid into and out of the rotary shaft.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

this application is through adopting the pivot cooling, and furthest reduces because pivot and the axle bush locking that the temperature rise leads to reduces the main shaft and scraps the probability, uses the same cooling cycle with stator cooling device, and the refrigerated cost of effectual reduction, the pivot is inside to add and to establish the cooling pore, has reduced external part, has reduced the probability that the part is interfered.

Drawings

Fig. 1 shows a schematic sectional structure view of a rolling bearing and a plain bearing main shaft provided according to an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional structural view of a radial bearing provided in accordance with an embodiment of the present invention;

illustration of the drawings:

1. a sleeve; 2. a front bearing seat; 3. a rear bearing seat; 4. a rotating shaft; 5. the cooling liquid enters and exits the connecting piece; 6. the two channels are rotatably connected with the joint; 7. a coolant inlet hole; 8. a coolant return hole; 9. connecting grooves; 10. a coolant tank; 11. a circulation pump; 12. a throttle valve; 13. a left thrust plate; 14. a right thrust plate; 15. bearing bushes; 16. an internal connection hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a spindle with a controllable spindle temperature comprises a sleeve 1 and a cooling liquid tank 10, wherein the sleeve 1 is connected with a front bearing seat 2 and a rear bearing seat 3, a spindle 4 is arranged at the front bearing seat 2, a cooling liquid inlet and outlet connecting piece 5 is arranged at the rear bearing seat 3, a cooling liquid inlet hole 7 and a cooling liquid return hole 8 are arranged on the cooling liquid inlet and outlet connecting piece 5, a two-channel rotary connecting joint 6 is arranged at the end part of the cooling liquid inlet and outlet connecting piece 5, the cooling liquid inlet hole 7 and the cooling liquid return hole 8 are communicated with a connecting groove 9, at least one or a plurality of cooling liquid inlet holes 7 and at least one or a plurality of cooling liquid return holes 8 are arranged on the spindle 4, the cooling liquid inlet hole 7 and the cooling liquid return hole 8 are connected through the connecting groove 9 or an internal connecting hole 16 at the front end of the spindle 4, and the cooling liquid tank 10 is communicated with the two-channel rotary connecting joint 6 through a circulating pump 11 and a throttle valve 12, the liquid inlet of two-way rotary joint 6 is connected with the liquid outlet of temperature control coolant liquid case 10, and the liquid outlet of two-way rotary joint 6 is connected with the liquid inlet of coolant liquid case 10, and the manual or automatically regulated of coolant liquid temperature in coolant liquid case 10 goes up and down, and the both sides of pivot 4 are equipped with left thrust plate 13 and right thrust plate 14 respectively, and pivot 4 is connected with axle bush 15, and circulating pump 11 and choke valve 12 control coolant liquid business turn over pivot 4's flow.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A main shaft with a controllable rotating shaft temperature comprises a sleeve (1) and a cooling liquid box (10), and is characterized in that the sleeve (1) is connected with a front bearing seat (2) and a rear bearing seat (3), the front bearing seat (2) is provided with a rotating shaft (4), the rear bearing seat (3) is provided with a cooling liquid inlet and outlet connecting piece (5), the cooling liquid inlet and outlet connecting piece (5) is provided with a cooling liquid inlet hole (7) and a cooling liquid return hole (8), the end part of the cooling liquid inlet and outlet connecting piece (5) is provided with a two-channel rotary connecting joint (6), the cooling liquid inlet hole (7) and the cooling liquid return hole (8) are communicated with a connecting groove (9), the cooling liquid box (10) is communicated with the two-channel rotary connecting joint (6) through a circulating pump (11) and a throttle valve (12), and the two sides of the rotating shaft (4) are respectively provided with a left thrust plate (13) and a right thrust plate (14), the rotating shaft (4) is connected with a bearing bush (15).

2. A spindle with controllable spindle temperature according to claim 1, characterised in that the coolant inlet (7) and the coolant return (8) are connected by a connecting slot (9) or an internal connecting hole (16) at the front end of the spindle (4).

3. A spindle with controllable spindle temperature according to claim 1, characterized in that the inlet of the two-channel rotary joint (6) is connected to the outlet of the temperature control coolant tank (10), and the outlet of the two-channel rotary joint (6) is connected to the inlet of the coolant tank (10).

4. A spindle with controllable spindle temperature according to claim 1, characterised in that the coolant temperature in the coolant tank (10) is adjusted manually or automatically.

5. A shaft temperature controllable spindle according to claim 1, characterised in that the circulation pump (11) and the throttle valve (12) control the flow of cooling liquid into and out of the shaft (4).