Cooling control mechanism for machining center spindle motor that can reduce heat conduction and thermal expansion

Abstract

The present invention discloses a cooling control mechanism for a spindle motor of a machining center capable of reducing heat conduction and heat extension. The mechanism comprises a spindle motor mounting plate, a spindle motor fixed on the spindle motor mounting plate by screws, and a spindle motor cooling device mounted outside the spindle motor, a heat absorption layer is coated between the spindle motor and the spindle motor cooling device, a cooling channel is arranged on the spindle motor mounting plate, a cooling circuit is arranged in the spindle motor cooling device, the cooling channel is connected with the cooling circuit and is injected with cooling oil; the cooling control mechanism for the spindle motor of a machining center capable of reducing heat conduction and heat extension can effectively control the heating of the spindle motor and the heating of the spindle motor plate, and avoid the heating of the spindle box caused by the heating of the spindle motor, thereby avoiding the thermal extension of the spindle box caused by the heating of the spindle motor.

Description

Technical Field

[0001] The invention relates to a cooling control mechanism for a main shaft motor of a machining center which can reduce heat conduction and heat extension. Background Art

[0002] In the cutting process of the vertical machining center, the spindle motor is a high-load component. The spindle motor generally uses an AC servo motor, the speed is usually above 12,000 rpm, and the power is between a few kilowatts and tens of kilowatts. During the high-speed rotation, the spindle motor will generate a lot of heat. If the heat cannot be effectively dissipated, it will cause the spindle motor and the spindle box to overheat, which will have a great impact on the accuracy and stability of the machine tool. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a cooling control mechanism for the spindle motor of a machining center which can effectively control the heating of the spindle motor and the heating of the spindle motor plate, avoid the heating of the spindle box caused by the heating of the spindle motor, and thus the thermal elongation of the spindle box, and reduce heat conduction and thermal extension.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A spindle motor cooling control mechanism for a machining center capable of reducing heat conduction and heat extension comprises a spindle motor mounting plate, a spindle motor fixed to the spindle motor mounting plate by screws, and a spindle motor cooling device mounted outside the spindle motor, a heat absorbing layer is coated between the spindle motor and the spindle motor cooling device, a cooling channel is arranged on the spindle motor mounting plate, a cooling circuit is arranged in the spindle motor cooling device, the cooling channel is connected to the cooling circuit, and cooling oil is injected into the cooling channel.

[0006] Preferably, the spindle motor cooling device is composed of four detachable and assembled cooling plates, and adjacent cooling plates are connected and fixed by bolts.

[0007] Preferably, the cooling circuit is composed of a plurality of cavities arranged vertically on a cooling plate, and the cavities between the cooling plates are connected by pipelines.

[0008] Preferably, an upper connecting strip is provided on the top of the cooling plate, and a first cooling liquid inlet hole and a first cooling liquid outlet hole matching with the cavity hole are opened on the upper connecting strip.

[0009] Preferably, a lower connecting strip is provided at the bottom of the cooling plate, and a sealing ring matching the cavity hole is provided on the lower connecting strip.

[0010] Preferably, a mounting hole for mounting the spindle motor is provided on the spindle motor mounting plate, and the cooling channel is composed of a transverse channel and a vertical channel which surround the mounting hole.

[0011] Preferably, the transverse channel and the vertical channel respectively penetrate the spindle motor mounting plate in the transverse direction and the vertical direction, and form a second coolant inlet hole and a second coolant outlet hole.

[0012] Preferably, the second coolant inlet hole and the second coolant outlet hole are connected to the cavity hole through a transverse channel and a vertical channel respectively.

[0013] Preferably, the second coolant inlet hole and the second coolant outlet hole are provided with plugs.

[0014] Preferably, the second coolant inlet hole and the second coolant outlet hole are respectively arranged on the same side of the spindle motor mounting plate, and the plug is arranged on the other three sides of the spindle motor mounting plate to block the horizontal channel and the vertical channel.

[0015] The beneficial effects of the present invention are:

[0016] During the operation of the machining center, a large amount of heat will be generated due to the long-term high-speed operation of the spindle motor. If the heat cannot be dissipated in time, heat conduction and thermal extension will occur, thus affecting the accuracy and life of the equipment. This solution adopts a spindle motor cooling device and sets a heat absorption layer between the spindle motor and the cooling device, which can effectively reduce heat conduction and thermal extension and improve the stability and reliability of the equipment.

[0017] This solution uses a cooling channel and a cooling circuit connected to each other. By injecting cooling oil for cooling, the spindle motor can quickly dissipate heat and improve the cooling effect. At the same time, the cooling oil has good thermal conductivity and can quickly transfer the heat generated by the spindle motor to the cooling device. While ensuring the normal operation of the equipment, it can also extend the service life of the equipment.

[0018] This solution adopts a spindle motor mounting plate, and the setting of the cooling channel and the cooling circuit is relatively simple and easy to install. In addition, the spindle motor cooling device can be adjusted and improved according to the specific equipment requirements, and has a wide range of applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a cooling control mechanism for a spindle motor of a machining center capable of reducing heat conduction and heat extension according to the present invention;

[0020] Figure 2 A schematic diagram of the internal structure of a spindle motor mounting plate of a spindle motor cooling control mechanism for a machining center capable of reducing heat conduction and heat extension according to the present invention;

[0021] Figure 3A schematic diagram of the three-dimensional structure of a spindle motor cooling device of a spindle motor cooling control mechanism for a machining center capable of reducing heat conduction and heat extension according to the present invention;

[0022] Figure 4 An exploded view of a spindle motor cooling device of a spindle motor cooling control mechanism for a machining center capable of reducing heat conduction and heat extension according to the present invention;

[0023] Figure 5 The present invention is a schematic cross-sectional structural diagram of a spindle motor cooling device of a machining center spindle motor cooling control mechanism capable of reducing heat conduction and heat extension. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] Example

[0027] See also Figure 1-5 As shown, a cooling control mechanism for a spindle motor of a machining center which can reduce heat conduction and heat extension comprises a spindle motor mounting plate 1, a spindle motor 2 fixed on the spindle motor mounting plate 1 by screws, and a spindle motor cooling device 3 mounted outside the spindle motor 2, a heat absorbing layer is coated between the spindle motor 2 and the spindle motor cooling device 3, a cooling channel 11 is arranged on the spindle motor mounting plate 1, a cooling circuit 31 is arranged in the spindle motor cooling device 3, the cooling channel 11 is connected to the cooling circuit 31, and cooling oil is injected into the cooling channel 11.

[0028] Fix the spindle motor 2 on the spindle motor mounting plate 1 by screws to ensure that it is stable and reliable; install the spindle motor cooling device 3 on the outside of the spindle motor 2 and connect it to the spindle motor 2; set a heat absorption layer between the spindle motor 2 and the spindle motor cooling device 3 to reduce heat conduction and heat extension, and materials with high thermal conductivity can be selected; set a cooling channel 11 on the spindle motor mounting plate 1 to guide the flow of cooling oil.

[0029] A cooling circuit 31 is provided in the spindle motor cooling device 3 to form a closed cooling system; the cooling channel 11 is ensured to be connected with the cooling circuit 31 so that the cooling oil can circulate smoothly; an appropriate amount of cooling oil is injected into the cooling circuit 31 to ensure the normal operation of the cooling system.

[0030] By setting up the cooling channel 11 and the cooling circuit 31, and injecting cooling oil for heat dissipation, the temperature of the spindle motor 2 can be effectively reduced and the heat dissipation effect can be improved; a heat absorption layer is set between the spindle motor 2 and the spindle motor cooling device 3, which can effectively reduce heat conduction and heat extension phenomena and improve the stability and reliability of the equipment; the scheme adopts the spindle motor mounting plate 1 and a relatively simple cooling system design, which is easy to install and has strong applicability; effective heat dissipation control can reduce the temperature rise of the spindle motor 2, thereby extending the service life of the equipment.

[0031] The spindle motor cooling device 3 is composed of four detachable cooling plates 32, and adjacent cooling plates 32 are fixed by bolts. The cooling circuit 31 is composed of a plurality of cavities 311 vertically arranged on the cooling plates 32, and the cavities 311 between the cooling plates 32 are connected by pipelines.

[0032] The spindle motor cooling device 3 is composed of four detachable cooling plates 32. This modular design makes the device more flexible and easy to maintain. If a cooling plate 32 needs to be replaced or repaired, it is only necessary to loosen the adjacent bolts without replacing the entire device. The vertically arranged cavities 311 on each cooling plate 32 can be adjusted and customized according to specific needs to meet different heat dissipation requirements. This design allows the cooling circuit 31 to be configured and expanded according to actual conditions, thereby improving the flexibility and scalability of the entire system.

[0033] By connecting the cavities 311 between the cooling plates 32 through pipes, the cooling liquid can flow between the cooling plates 32 to achieve heat transfer and dissipation. This design effectively increases the heat dissipation area and heat transfer efficiency, and improves the heat dissipation effect; the bolt connection and fixation ensures a tight connection between the cooling plates 32 to prevent leakage and loosening. At the same time, the design and connection method of the pipeline have also been reasonably considered to ensure the smooth flow of the cooling liquid, reduce the risk of failure and leakage, and improve the safety and reliability of the system; since the cooling plates 32 can be disassembled and assembled, maintenance personnel can more conveniently clean, inspect and replace them. This design simplifies the maintenance process, reduces downtime, and improves the availability of the equipment.

[0034] An upper connecting strip 321 is provided on the top of the cooling plate 32, and a first cooling liquid inlet hole 322 and a first cooling liquid outlet hole 323 are opened on the upper connecting strip 321 and matched with the cavity hole 311. A lower connecting strip 324 is provided on the bottom of the cooling plate 32, and a sealing ring 325 is provided on the lower connecting strip 324 and matched with the cavity hole 311.

[0035] Through the design of the upper connecting strip 321 and the lower connecting strip 324, the coolant can smoothly enter and flow out of the cavity 311, realizing comprehensive cooling of the cooling plate 32. When the coolant passes through the cavity 311, it can absorb the heat generated on the cooling plate 32 and take it away, thereby effectively reducing the temperature of the cooling plate 32 and improving the cooling effect; the upper connecting strip 321 and the lower connecting strip 324 cooperate with the cavity 311 and are sealed with a sealing ring 325 to ensure that the coolant does not leak during the flow process. This tight connection and good sealing performance can effectively prevent the coolant from overflowing or entering other areas, ensuring the normal operation and safety of the system.

[0036] Due to the presence of the upper connecting bar 321 and the lower connecting bar 324, maintenance personnel can easily connect and disconnect the inlet and outlet of the coolant. In this way, when the cooling plate 32 needs to be maintained or replaced, only the connecting bar needs to be operated, and there is no need to disassemble the entire system on a large scale, which simplifies the maintenance and replacement process and reduces downtime; through the structural design of the upper connecting bar 321 and the lower connecting bar 324, the stability and uniformity of the coolant flow in the cavity 311 can be ensured. This helps to avoid problems such as poor coolant flow and excessive local temperature, and improves the reliability and stability of the system.

[0037] The spindle motor mounting plate 1 is provided with a mounting hole 12 for mounting the spindle motor 2. The cooling channel 11 is composed of a transverse channel and a vertical channel surrounding the mounting hole 12. The transverse channel and the vertical channel respectively penetrate the spindle motor mounting plate 1 in the transverse direction and the vertical direction, and form a second coolant inlet hole 13 and a second coolant outlet hole 14.

[0038] By setting a cooling channel 11 on the spindle motor mounting plate 1, comprehensive cooling of the spindle motor 2 can be achieved. The transverse channel and the vertical channel run through the transverse and vertical directions of the spindle motor mounting plate 1, so that the coolant can fully cover the surface of the spindle motor 2, effectively absorb and take away the generated heat, and improve the cooling effect of the spindle motor 2; the second coolant inlet hole 13 and the second coolant outlet hole 14 formed by the transverse channel and the vertical channel realize the entry and exit of the coolant. In this way, the coolant can directly enter the cooling channel 11 from these holes, cool the spindle motor 2, and then flow out from the outlet hole, forming a complete cooling cycle. This design facilitates the introduction and discharge of the coolant and improves the convenience of operation.

[0039] By setting the transverse channel and the vertical channel, the coolant can fully contact the surface of the spindle motor 2 during the flow process, achieving a larger cooling area and faster heat transfer. This can speed up the heat dissipation speed, improve the cooling efficiency, prevent the spindle motor 2 from overheating, and extend its service life; the design of the transverse channel and the vertical channel makes the layout of the cooling channel 11 more flexible. The cooling channel 11 can be adjusted and customized according to actual conditions to adapt to spindle motors 2 of different types and specifications. This flexibility and adjustability make the solution more applicable and extensible.

[0040] The second coolant inlet hole 13 and the second coolant outlet hole 14 are connected to the cavity 311 through a transverse channel and a vertical channel respectively. A plug 15 is provided on the second coolant inlet hole 13 and the second coolant outlet hole 14. The second coolant inlet hole 13 and the second coolant outlet hole 14 are respectively arranged on the same side of the spindle motor mounting plate 1. The plug 15 is arranged on the other three sides of the spindle motor mounting plate 1 to block the transverse channel and the vertical channel.

[0041] By arranging the second coolant inlet hole 13 and the second coolant outlet hole 14 on the same side of the spindle motor mounting plate 1, the coolant pipeline layout can be simplified. The coolant only needs to enter the cooling channel 11 through one inlet hole, pass through the spindle motor 2, and then be discharged from the outlet hole, which reduces the complexity of the pipeline and improves the reliability of the system; by arranging the plug 15 on the second coolant inlet hole 13 and the second coolant outlet hole 14, the cooling channel 11 can be effectively blocked to prevent coolant leakage. In this way, it can be ensured that the coolant flows in the cooling channel 11, and the coolant will not leak out, thereby improving the safety and stability of the system.

[0042] By providing plugs 15 on the other three sides of the spindle motor mounting plate 1, the horizontal channel and the vertical channel can be easily blocked, so that the holes in the cavity are connected. In this way, during installation and maintenance, only the second coolant inlet hole 13 and the second coolant outlet hole 14 on the same side need to be processed, which simplifies the operation steps and improves work efficiency.

[0043] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A cooling control mechanism for a spindle motor of a machining center capable of reducing heat conduction and heat extension, characterized in that: The invention comprises a spindle motor mounting plate, a spindle motor fixed on the spindle motor mounting plate by screws, and a spindle motor cooling device mounted outside the spindle motor, a heat absorption layer is coated between the spindle motor and the spindle motor cooling device, a cooling channel is arranged on the spindle motor mounting plate, a cooling circuit is arranged in the spindle motor cooling device, the cooling channel is connected with the cooling circuit and is injected with cooling oil; the cooling circuit is composed of a plurality of cavities arranged vertically on the cooling plate, and the cavities between the cooling plates are connected by pipelines; an upper connecting strip is arranged on the top of the cooling plate, and a first coolant inlet hole and a first coolant outlet hole matching with the cavities are opened on the upper connecting strip; a mounting hole for the spindle motor is arranged on the spindle motor mounting plate, and the cooling channel is composed of a transverse channel surrounding the mounting hole and a vertical channel; the transverse channel and the vertical channel respectively penetrate the transverse direction and the vertical direction of the spindle motor mounting plate, and form a second coolant inlet hole and a second coolant outlet hole; the second coolant inlet hole and the second coolant outlet hole are connected with the cavity hole through the transverse channel and the vertical channel respectively; a plug is provided on the second coolant inlet hole and the second coolant outlet hole; the second coolant inlet hole and the second coolant outlet hole are respectively arranged on the same side of the spindle motor mounting plate, and the plug is arranged on the other three sides of the spindle motor mounting plate to block the transverse channel and the vertical channel; the spindle motor cooling device consists of four detachable and assembled cooling plates, adjacent cooling plates are fixed by bolts, a lower connecting strip is provided at the bottom of the cooling plate, and a sealing ring matching the cavity hole is provided on the lower connecting strip.

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