CN217617764U

CN217617764U - Main shaft structure with heat radiation structure for numerically controlled fraise machine

Info

Publication number: CN217617764U
Application number: CN202221316134.0U
Authority: CN
Inventors: 梁开华; 韩耀华; 刘跃龙
Original assignee: Shandong Province Huazhu Machinery Co ltd
Current assignee: Shandong Province Huazhu Machinery Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-10-21
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a main shaft structure for numerically controlled fraise machine with heat radiation structure, including the main shaft body, the outside of the main shaft body is provided with the connecting seat, and the right-hand member of connecting seat rotates and is connected with the sleeve to the main shaft body runs through the sleeve, telescopic inside is provided with the cooling chamber, and the inside in cooling chamber is provided with the bearing, and the bearing suit is at the outer wall of the main shaft body, the cooling bath has been seted up to the inside of the main shaft body, and sets up the series flow hole of intercommunication in the outside of cooling bath, the inside in cooling chamber is provided with the heat conduction stick, and the outer end of heat conduction stick passes telescopic section of thick bamboo wall to be connected with the heat-conducting plate in the outer end of heat conduction stick, the medial extremity of heat conduction stick inlays the dress in the inside of the main shaft body, and be fixed with the conducting strip in the inside of the main shaft body and in the outside of heat conduction stick. The utility model provides a current numerically controlled fraise machine main shaft structure itself do not have the heat dissipation function, only rely on lubricating oil heat dissipation, lead to the obscure problem of its radiating effect.

Description

Main shaft structure with heat radiation structure for numerically controlled fraise machine

Technical Field

The utility model relates to a milling machine main shaft technical field, concretely relates to main shaft structure for numerically controlled fraise machine with heat radiation structure.

Background

The main shaft of a numerical control machine tool refers to a shaft on the machine tool for driving a workpiece or a cutter to rotate, and generally comprises a main shaft component, a bearing, a transmission component (a gear or a belt wheel) and the like. The machine is mainly used for supporting transmission parts such as gears and belt wheels and transmitting motion and torque, such as a machine tool spindle; some are used to clamp a workpiece, such as a mandrel. Most of machine tools have a spindle unit except for a planer, a broaching machine, and the like, which are linearly moved in main motion. The movement accuracy and structural rigidity of the spindle unit are important factors determining the machining quality and the cutting efficiency. The main shaft component performance measuring indexes are mainly rotation precision, rigidity and speed adaptability.

However, the spindle of the numerical control machine tool can generate high temperature when running at high speed, and the service life of the spindle of the numerical control machine tool can be shortened when the spindle of the numerical control machine tool is in a high-temperature state for a long time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, a spindle structure with a heat dissipation structure for a numerical control milling machine is provided, so as to solve the problem that the heat dissipation effect is not obvious because the structure of the spindle of the existing numerical control milling machine does not have a heat dissipation function and only depends on lubricating oil for heat dissipation.

In order to achieve the above object, there is provided a spindle structure for a numerically controlled fraise machine having a heat dissipation structure, comprising:

the main shaft comprises a main shaft body, wherein a connecting seat is arranged on the outer side of the main shaft body, the right end of the connecting seat is rotatably connected with a sleeve, the main shaft body penetrates through the sleeve, a cooling cavity is arranged in the sleeve, a bearing is arranged in the cooling cavity and sleeved on the outer wall of the main shaft body, a cooling groove is formed in the main shaft body, a series flow hole communicated with the cooling groove is formed in the outer side of the cooling groove, a heat conducting rod is arranged in the cooling cavity, the outer end of the heat conducting rod penetrates through the wall of the sleeve, a heat conducting plate is connected to the outer end of the heat conducting rod, the inner side end of the heat conducting rod is embedded in the main shaft body, and a heat conducting fin is fixed in the main shaft body and outside the heat conducting rod.

Further, an axial flow hole and a radial flow hole are formed in the main shaft body, the axial flow hole is formed in the axial direction of the main shaft body, the radial flow hole is formed in the radial direction of the main shaft body, and the radial flow hole is communicated with the cooling cavity and the cooling groove.

Furthermore, an oil inlet hole and an oil discharge hole are formed in the wall of the sleeve, the oil inlet hole and the oil discharge hole are communicated with the cooling cavity, and the oil inlet holes are respectively located at two ends of the sleeve.

Further, the main shaft body is provided with a step end, the right end of the sleeve is fixed at the step end through a bolt, and a sealing ring is arranged at the joint of the main shaft body and the sleeve.

Further, the heat conducting rod is arranged to be of a cylindrical structure, the heat conducting fins are arranged to be of an annular fin structure, and the heat conducting fins are fixed on the outer side of the heat conducting rod in a layered mode.

Furthermore, the longitudinal section of the series flow hole is arranged to be a continuous M-shaped structure, and the series flow hole is arranged to be annular and equidistantly arranged on the outer side of the cooling tank.

Further, the heat-conducting plate sets up to the arc structure, and the heat-conducting plate is fixed on telescopic surface to the heat-conducting plate outside is provided with the fin of equidistance range.

The beneficial effects of the utility model reside in that, the utility model discloses an inlet port that main shaft structure for numerically controlled fraise machine with heat radiation structure utilizes sleeve section of thick bamboo wall to set up is convenient for pour into lubricating oil into cooling intracavity portion, there is the lubrication cooling to bearing and main shaft body outside, then inside lubricating oil flows into the cooling bath through footpath discharge orifice and axial flow hole diffusion, and through cooling bath and series flow hole, make to dispel the heat to main shaft body inside, and then reach inside and outside radiating effect simultaneously, then utilize conducting strip and heat conduction stick, be convenient for transmit external heating panel and fin with the oil temperature of cooling bath and cooling intracavity portion, make inside oil temperature and outside air temperature take place the heat exchange, and then be convenient for reduce the oil temperature at any time, prevent that lubricating oil is rotten, cooling and lubricated effect have been guaranteed.

Drawings

Fig. 1 is a schematic view of a cross-sectional structure of a spindle body according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a position a in fig. 1 according to an embodiment of the present invention.

Fig. 3 is a schematic side view of the heat conducting rod according to the embodiment of the present invention.

Fig. 4 is a schematic side view of the heat sink in the embodiment of the present invention.

1. A main shaft body; 2. a connecting seat; 3. a sleeve; 4. an oil inlet hole; 5. a heat sink; 6. a heat conducting plate; 7. a cooling tank; 8. a serial flow hole; 9. a cooling chamber; 10. a bearing; 11. an axial flow bore; 12. a radial flow hole; 13. an oil discharge hole; 14. a heat conducting rod; 15. a heat conductive sheet.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Fig. 1 is the utility model discloses main shaft body section structure schematic diagram, fig. 2 are the utility model discloses a structural schematic diagram of a department in fig. 1, fig. 3 are the utility model discloses a heat conduction stick looks sideways at structural schematic diagram, fig. 4 are the utility model discloses a fin looks sideways at structural schematic diagram.

Referring to fig. 1 to 4, the utility model provides a main shaft structure for numerically controlled fraise machine with heat radiation structure, include: the main shaft body 1, the connecting seat 2, the sleeve 3, the oil inlet 4, the radiating fin 5, the heat conducting plate 6, the cooling groove 7, the serial flow hole 8, the cooling cavity 9, the bearing 10, the axial flow hole 11, the radial flow hole 12, the oil discharge hole 13, the heat conducting rod 14 and the heat conducting plate 15.

Specifically, the outside of the main shaft body 1 is provided with a connecting seat 2, and the right-hand member of the connecting seat 2 is connected with a sleeve 3 in a rotating manner, and the main shaft body 1 runs through the sleeve 3, the inside of the sleeve 3 is provided with a cooling cavity 9, and the inside of the cooling cavity 9 is provided with a bearing 10, and the bearing 10 is sleeved on the outer wall of the main shaft body 1, a cooling groove 7 is provided inside the main shaft body 1, and the outside of the cooling groove 7 is provided with a communicated serial flow hole 8, the inside of the cooling cavity 9 is provided with a heat conducting rod 14, and the outer end of the heat conducting rod 14 passes through the cylinder wall of the sleeve 3, and the outer end of the heat conducting rod 14 is connected with a heat conducting plate 6, the inner side end of the heat conducting rod 14 is embedded inside the main shaft body 1, and a heat conducting sheet 15 is fixed inside the main shaft body 1 and outside the heat conducting rod 14.

In this embodiment, the connecting seat 2 is rotatably connected to the spindle body 1, and a sealing ring is disposed at the connection position.

The outer ring of the bearing 10 is fixedly connected with the inner wall of the sleeve 3, and the inner ring is fixedly connected with the outer wall of the main shaft body 1.

The heat conducting bar 14 and the heat conducting fin 15 are made of pure copper, and the surface thereof is provided with a silver coating.

An axial flow hole 11 and a radial flow hole 12 are formed in the main shaft body 1, the axial flow hole 11 is formed along the axial direction of the main shaft body 1, the radial flow hole 12 is formed along the radial direction of the main shaft body 1, and the radial flow hole 12 is communicated with the cooling cavity 9 and the cooling tank 7.

In this embodiment, the axial flow hole 11 is communicated with the partial radial flow hole 12, and the axial flow hole 11 is annularly formed with at least eight axial flow holes, and the axial flow hole 11 enhances the axial circulation and heat dissipation effect of the lubricating oil.

An oil inlet hole 4 and an oil discharging hole 13 are formed in the wall of the sleeve 3, the oil inlet hole 4 and the oil discharging hole 13 are communicated with the cooling cavity 9, and the oil inlet holes 4 are respectively located at two ends of the sleeve 3.

In this embodiment, the oil inlet hole 4 and the oil discharge hole 13 facilitate the addition and replacement of lubricating oil, thereby ensuring the cooling and lubricating effect.

The main shaft body 1 is provided with a step end, the right end of the sleeve 3 is fixed at the step end through a bolt, and a sealing ring is arranged at the joint of the main shaft body 1 and the sleeve 3.

In this embodiment, the sleeve 3 rotates synchronously with the main shaft body 1, and the seal ring has a sealing effect on the cooling chamber 9.

The heat conduction rod 14 is provided as a cylindrical structure, and the heat conduction sheet 15 is provided as an annular sheet structure, and the heat conduction sheet 15 is fixed on the outer side of the heat conduction rod 14 in layers.

In this embodiment, the innermost heat conducting strip 15 contacts with the lubricant inside the cooling groove 7, so as to transfer the heat inside the cooling groove 7, and the heat conducting strip 15 does not interfere with the space position of the radial flow hole 12.

The longitudinal section of the serial flow hole 8 is arranged in a continuous M-shaped structure, and the serial flow hole 8 is arranged in a ring shape and is equidistantly arranged on the outer side of the cooling groove 7.

In this embodiment, the axial contact area of the lubricating oil with the main shaft body 1 is increased by the serial flow holes 8, and the cooling effect is increased.

The heat-conducting plate 6 sets up to the arc structure, and the heat-conducting plate 6 is fixed on the surface of sleeve 3 to the heat-conducting plate 6 outside is provided with the fin 5 of equidistance range.

In this embodiment, the heat dissipation plate 5 and the heat conduction plate 6 are made of aluminum, and the gap direction of the heat dissipation plate 5 is consistent with the rotation direction of the main shaft body 1, so that when the main shaft body 1 drives the sleeve 3 to rotate, the air flow in the gap between the heat dissipation plate 5 is enhanced, and the heat dissipation effect is enhanced.

The utility model discloses a main shaft structure for numerically controlled fraise machine with heat radiation structure can effectively solve current numerically controlled fraise machine main shaft structure itself and does not have the heat dissipation function, only rely on lubricating oil heat dissipation, lead to the problem that its radiating effect is obscure, the inlet port of utilizing the sleeve section of thick bamboo wall to set up is convenient for pour into lubricating oil into cooling intracavity portion into, there is lubricated cooling to bearing and main shaft body outside, then lubricating oil flows into inside the cooling bath through footpath discharge orifice and axial flow hole diffusion, and through cooling bath and series flow hole, make to dispel the heat to main shaft body inside, and then reach inside and outside radiating effect simultaneously, then utilize conducting strip and conducting rod, be convenient for transmit outside heating panel and fin with the oil temperature of cooling bath and cooling intracavity portion, make inside oil temperature and outside air temperature take place the heat exchange, and then be convenient for reduce the oil temperature at any time, prevent rotten lubricating oil, cooling and lubrication effect have been guaranteed.

Claims

1. The utility model provides a main shaft structure for numerically controlled fraise machine with heat radiation structure which characterized in that includes: the heat conduction device comprises a main shaft body (1), wherein a connecting seat (2) is arranged on the outer side of the main shaft body (1), a sleeve (3) is rotatably connected to the right end of the connecting seat (2), the main shaft body (1) penetrates through the sleeve (3), a cooling cavity (9) is arranged inside the sleeve (3), a bearing (10) is arranged inside the cooling cavity (9), the bearing (10) is sleeved on the outer wall of the main shaft body (1), a cooling groove (7) is formed in the main shaft body (1), communicated series flow holes (8) are formed in the outer side of the cooling groove (7), a heat conduction rod (14) is arranged inside the cooling cavity (9), the outer end of the heat conduction rod (14) penetrates through the cylinder wall of the sleeve (3), a heat conduction plate (6) is connected to the outer end of the heat conduction rod (14), the inner side end of the heat conduction rod (14) is embedded in the main shaft body (1), and a heat conduction sheet (15) is fixed in the main shaft body (1) and outside the heat conduction rod (14).

2. The spindle structure with the heat dissipation structure for the numerically controlled milling machine according to claim 1, wherein an axial flow hole (11) and a radial flow hole (12) are formed in the spindle body (1), the axial flow hole (11) is formed along an axial direction of the spindle body (1), the radial flow hole (12) is formed along a radial direction of the spindle body (1), and the radial flow hole (12) is communicated with the cooling cavity (9) and the cooling groove (7).

3. The main shaft structure with the heat dissipation structure for the numerically controlled milling machine is characterized in that an oil inlet (4) and an oil outlet (13) are formed in the wall of the sleeve (3), the oil inlet (4) and the oil outlet (13) are communicated with the cooling cavity (9), and the oil inlets (4) are respectively located at two ends of the sleeve (3).

4. The spindle structure with a heat dissipation structure for the numerically controlled milling machine according to claim 1, wherein the spindle body (1) is provided with a stepped end, and the right end of the sleeve (3) is fixed to the stepped end by a bolt, and a seal ring is provided at the junction of the spindle body (1) and the sleeve (3).

5. The spindle structure of a numerically controlled milling machine with a heat dissipating structure according to claim 1, wherein the heat conducting rod (14) is provided in a cylindrical structure, and the heat conducting fins (15) are provided in an annular fin structure, and the heat conducting fins (15) are fixed in layers on the outer side of the heat conducting rod (14).

6. The spindle structure with a heat dissipation structure for the numerically controlled milling machine according to claim 1, wherein the cross-flow holes (8) are arranged in a continuous M-shaped longitudinal section, and the cross-flow holes (8) are arranged in a ring shape and are equidistantly arranged on the outer side of the cooling groove (7).

7. The spindle structure with a heat dissipation structure for the numerically controlled milling machine according to claim 1, wherein the heat conducting plate (6) is provided in an arc plate structure, and the heat conducting plate (6) is fixed on the surface of the sleeve (3), and the heat radiating fins (5) are provided on the outside of the heat conducting plate (6) at equal intervals.