Cooling fan structure for machining center spindle motor

Abstract

The utility model particularly relates to a cooling fan structure for a machining center spindle motor. A cooling fan body comprises an axial flow motor, an impeller and a fan protective cover. A plurality of compressed air nozzles are sequentially arranged in the circumferential direction of the fan protective cover in a penetrating mode, the ends, where spraying holes are located, of the compressed air nozzles are located in the fan protective cover, and the spraying directions of the compressed air nozzles are all anticlockwise. A temperature sensing circuit is arranged in the machining center spindle motor, the temperature sensing circuit comprises a temperature sensor and a temperature controller, and the temperature controller is electrically connected with the multiple compressed air nozzles so as to control opening and closing of the multiple compressed air nozzles. According to the utility model, when the temperature sensor acquires the temperature value in the fan protective cover and the temperature value is greater than the preset temperature value, the temperature controller controls the opening of the compressed air nozzle, so that the cooling fan breaks through the locked rotor to recover the operation, and the operation efficiency of the spindle motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan technical field, concretely relates to a cooling fan structure for machining center main shaft motor. BACKGROUND

[0002] With the continuous popularity of automation and black light factory, the machine tool starting time is increasingly valued, and the failure rate of the axial flow fan of the main shaft motor is the reason for the shortening of the starting time. The main shaft motor of the machining center is installed on the upper part of the main shaft box, and the cutting heat of the machining process atomizes the chip mist. Due to the machine tool structure problem, the protective cover of the main shaft is similar to a chimney, and the oil smoke flows upward.

[0003] In order to cooperate with the oil smoke flow direction, the cooling fan of the main shaft motor flows upward, and the oil smoke will accumulate on the inside of the air baffle. After a long time, the impeller and the air baffle will be adhered, the fan will be unable to start when starting, and the motor will be burned out or the service life of the motor will be affected, which is extremely unfavorable to the on-site use of the main shaft motor. Therefore, a cooling fan structure is urgently needed to avoid stalling during operation and improve the running efficiency of the main shaft motor. SUMMARY

[0004] In view of the fact that the existing technology will cause the impeller and the air baffle to adhere after a long time, the fan will be unable to start when starting, and the motor will be burned out or the service life of the motor will be affected.

[0005] The utility model provides a cooling fan structure for machining center main shaft motor, cooling fan structure and machining center main shaft motor fixed connection, cooling fan structure includes cooling fan body, cooling fan body includes axial flow motor, impeller and fan protective cover, the impeller is fixedly arranged in the inside of fan protective cover, the axial flow motor is fixedly connected on the front wall of fan protective cover through flange, the impeller is connected with the axial flow motor through the rotating end, so as to drive the rotation of the impeller, the circumferential direction of fan protective cover is sequentially provided with a plurality of compressed air nozzles, the end where the spray hole of compressed air nozzle is located is located in the inside of fan protective cover, and the injection direction of a plurality of compressed air nozzles is counterclockwise direction, temperature sensing circuit is arranged in the machining center main shaft motor, the temperature sensing circuit contains temperature sensor and temperature controller, the temperature controller is electrically connected with a plurality of compressed air nozzles respectively, so as to control the opening and closing of a plurality of compressed air nozzles.

[0006] Specifically, one of the main technical ideas of the utility model is that the cooling fan structure comprises an axial flow motor, an impeller and a fan protective cover, a plurality of compressed air nozzles are sequentially arranged in the circumferential direction of the fan protective cover, the end of the spray hole in the compressed air nozzle is located in the interior of the fan protective cover, and the spray directions of the plurality of compressed air nozzles are all counterclockwise directions; when the temperature sensor obtains the temperature value in the fan protective cover, when the temperature value is greater than the preset temperature value, the temperature controller controls the opening of the compressed air nozzle, so that the cooling fan restores operation by breaking through the locked rotor, and the operation efficiency of the main shaft motor is improved.

[0007] Further, the shell of the axial flow motor is provided with an air inlet, the air inlet is communicated with the fan protective cover, and the sidewall of the fan protective cover is also provided with an air outlet; the machining center main shaft motor is connected with the cooling fan body through the air outlet.

[0008] Further, the fan protective cover further comprises a rear wall, the front wall of the fan protective cover and the sidewall of the fan protective cover are fixedly connected to form a hollow cylindrical cover body, and the hollow cylindrical cover body is connected with the rear wall through bolts.

[0009] Further, a plurality of fan-shaped through holes are arranged on the front wall of the fan protective cover.

[0010] Further, the coil energization circuit of the axial flow motor is connected with a temperature protection switch in series; when the temperature in the axial flow motor is higher than a preset temperature, the temperature protection switch is disconnected.

[0011] Further, the coil energization circuit of the axial flow motor comprises a U-phase coil energization circuit, a V-phase coil energization circuit and a W-phase coil energization circuit; the U-phase coil energization circuit is connected with a first temperature protection switch in series; and the V-phase coil energization circuit is connected with a second temperature protection switch in series. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0013] Fig. 1 A kind of for the three-dimensional structure diagram of cooling fan structure of machining center main shaft motor of the utility model provided in an embodiment.

[0014] Fig. 2 A kind of for the side view of cooling fan structure of machining center main shaft motor of the utility model provided in an embodiment.

[0015] Fig. 3 The utility model discloses an embodiment provides a kind of coil schematic diagram in axial flow motor in the cooling fan structure for machining center main shaft motor.

[0016] 1, axial flow motor;2, fan protective cover;3, compressed air nozzle;4, machining center main shaft motor;11, air inlet;12, U-phase coil energizing circuit;13, V-phase coil energizing circuit;14, W-phase coil energizing circuit;15, first temperature protection switch;16, second temperature protection switch;21, front wall;22, side wall;23, back wall;24, bolt;211, fan-shaped through hole;41, air outlet. DETAILED DESCRIPTION

[0017] The utility model discloses an embodiment provides a kind of coil schematic diagram in axial flow motor in the cooling fan structure for machining center main shaft motor. Figs. 1-3 The utility model discloses an embodiment provides a kind of coil schematic diagram in axial flow motor in the cooling fan structure for machining center main shaft motor.

[0018] In order to make the purpose, technical scheme and advantage of the utility model more clear, the utility model is further explained in detail below with the drawings and examples.

[0019] The main technical idea of the utility model is that the cooling fan structure includes an axial flow motor, an impeller and a fan protective cover, a plurality of compressed air nozzles are sequentially arranged in the circumferential direction of the fan protective cover, the end of the spray hole in the compressed air nozzle is located inside the fan protective cover, and the spray directions of the plurality of compressed air nozzles are all counterclockwise. When the temperature sensor obtains the temperature value inside the fan protective cover, and the temperature value is greater than the preset temperature value, the temperature controller controls the opening of the compressed air nozzle, so that the cooling fan restores operation by breaking through the locked rotor, and the operation efficiency of the main shaft motor is improved.

[0020] Further, please refer to Figs. 1-2 The utility model discloses an embodiment provides a kind of cooling fan structure for machining center main shaft motor of the utility model three-dimensional and side view structure schematic diagram.

[0021] The utility model provides a kind of cooling fan structure for machining center main shaft motor, cooling fan structure is fixedly connected with machining center main shaft motor, and the cooling fan structure includes cooling fan body;

[0022] The cooling fan body includes an axial flow motor 1, an impeller (not shown in the figure) and a fan protective cover 2, the impeller is fixedly arranged inside the fan protective cover 2, and the axial flow motor 1 is fixedly connected to the front wall 21 of the fan protective cover 2 through a flange plate;The impeller is connected with the axial flow motor 1 through a rotating end to drive the impeller to rotate.

[0023] A plurality of compressed air nozzles 3 are sequentially arranged in the circumferential direction of the fan protective cover 2, and the end of the jet orifice of the compressed air nozzles 3 is located inside the fan protective cover 2, and the jet directions of the plurality of compressed air nozzles 3 are all counterclockwise directions.

[0024] The temperature sensing circuit inside the machining center spindle motor 4 includes a temperature sensor and a temperature controller, and the temperature controller is electrically connected to the plurality of compressed air nozzles to control the opening and closing of the plurality of compressed air nozzles.

[0025] Specifically, since the cooling fan of the spindle motor flows upward, the oil fume will accumulate on the inside of the fan cover, and over time, the impeller and the fan cover will be stuck together, causing the fan to be unable to start and resulting in stalling, which will cause the temperature of the spindle motor to rise. When the temperature value is greater than the preset temperature value, the temperature controller controls the opening of the compressed air nozzle to make the cooling fan flush and restore operation, thereby improving the operation efficiency of the spindle motor.

[0026] Further, the housing of the axial flow motor 1 is provided with an air inlet 11, and the air inlet 11 is communicated with the fan protective cover 2. The side wall of the fan protective cover 2 is also provided with an air outlet 41, and the machining center spindle motor 4 is connected to the cooling fan body through the air outlet 41.

[0027] Specifically, when the cooling fan body is normally operated, air is drawn in through the air inlet 11, cooled by the cooling fan body, and then transmitted to the machining center spindle motor 4 through the air outlet 41 to achieve cooling of the machining center spindle motor 4.

[0028] Further, the fan protective cover 2 further includes a rear wall 23, and the front wall 21 of the fan protective cover 2 and the side wall 22 of the fan protective cover are fixedly connected to form a hollow cylindrical cover body, and the hollow cylindrical cover body is connected to the rear wall 23 through a bolt 24.

[0029] Further, a plurality of fan-shaped through holes 211 are arranged on the front wall 21 of the fan protective cover 2.

[0030] Further, a temperature protection switch is connected in series to the coil energizing circuit of the axial flow motor, and the temperature protection switch is disconnected when the internal temperature of the axial flow motor is higher than the preset temperature.

[0031] Please refer to Fig. 3 As shown in the figure, the coil energizing circuit of the axial flow motor 1 includes a U-phase coil energizing circuit 12, a V-phase coil energizing circuit 13, and a W-phase coil energizing circuit 14. The first temperature protection switch 15 is connected in series to the U-phase coil energizing circuit, and the second temperature protection switch 16 is connected in series to the V-phase coil energizing circuit.

[0032] Specifically, when the cooling fan body occurs to be locked, the temperature of the coil of the axial flow motor 1 will rise, when the coil temperature rises to the threshold temperature of the temperature protection switch, the temperature protection switch will automatically disconnect, so that the cooling fan body stops working, and the cooling fan structure is maximally protected.

[0033] In summary, the utility model provides a kind of cooling fan structure for machining center main shaft motor, the main technical idea of the cooling fan structure at least has the following advantages:

[0034] 1. The circumferential direction of the fan protective cover is sequentially provided with a plurality of compressed air nozzles, the end where the spray hole of the compressed air nozzle is located is located inside the fan protective cover, and the spray direction of the plurality of compressed air nozzles is counterclockwise direction, when the temperature sensor obtains the temperature value inside the fan protective cover, when the temperature value is greater than the preset temperature value, the temperature controller controls the opening of the compressed air nozzle, so that the cooling fan flushes the locked rotation to restore operation, and the operating efficiency of the main shaft motor is improved.

[0035] 2. When the cooling fan body occurs to be locked, the temperature of the coil of the axial flow motor will rise, when the coil temperature rises to the threshold temperature of the temperature protection switch, the temperature protection switch will automatically disconnect, so that the cooling fan stops working, and the cooling fan structure is maximally protected.

[0036] The utility model is introduced in detail above, and the principle and implementation mode of the utility model are described by applying specific examples in the utility model. The above example is only used to help understand the utility model and core idea. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A cooling fan structure for a machining center spindle motor, wherein the cooling fan structure is fixedly connected to the machining center spindle motor, characterized in that, The cooling fan structure includes a cooling fan body; The cooling fan body includes an axial flow motor, an impeller, and a fan protective cover. The impeller is fixedly installed inside the fan protective cover, and the axial flow motor is fixedly connected to the front wall of the fan protective cover through a flange. The impeller is connected to the axial flow motor through a rotating end to drive the impeller to rotate. Multiple compressed air nozzles are sequentially installed around the circumference of the fan protective cover. The nozzles are located inside the fan protective cover, and the spray direction of the multiple compressed air nozzles is counterclockwise. The machining center spindle motor is equipped with a temperature sensing circuit, which includes a temperature sensor and a temperature controller. The temperature controller is electrically connected to multiple compressed air nozzles to control the opening and closing of the multiple compressed air nozzles.

2. The cooling fan structure for a machining center spindle motor as described in claim 1, characterized in that, The axial motor housing is provided with an air inlet, which is connected to the fan protective cover. The fan protective cover is also provided with an air outlet on its side wall. The machining center spindle motor is connected to the cooling fan structure through the air outlet.

3. The cooling fan structure for a machining center spindle motor as described in claim 1, characterized in that, The fan protective cover also includes a rear wall, and the front wall and side wall of the fan protective cover are fixedly connected to form a hollow cylindrical cover. The hollow cylindrical cover is connected to the rear wall by bolts.

4. The cooling fan structure for a machining center spindle motor as described in claim 1, characterized in that, The front wall of the fan protective cover is provided with multiple fan-shaped through holes.

5. The cooling fan structure for a machining center spindle motor as described in claim 1, characterized in that, A temperature protection switch is connected in series in the coil energizing circuit of the axial flow motor. When the internal temperature of the axial flow motor is higher than the preset temperature, the temperature protection switch is disconnected.

6. A cooling fan structure for a machining center spindle motor according to claim 1, characterized in that, The coil energizing circuit of the axial flow motor includes a U-phase coil energizing circuit, a V-phase coil energizing circuit, and a W-phase coil energizing circuit. A first temperature protection switch is connected in series in the U-phase coil energizing circuit, and a second temperature protection switch is connected in series in the V-phase coil energizing circuit.

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