Motorized spindle casing and motorized spindle thereof

Abstract

The utility model discloses a motorized spindle casing and a motorized spindle thereof, the motorized spindle casing comprises a motorized spindle casing body, the motorized spindle casing body comprises an outer casing, four ventilating ducts arranged at four corners inside the outer casing, and silencing cotton linings adhered in inner cavities of the ventilating ducts through adhesive, and a front pressing end cover is fixed on the end face of the front side of the outer casing. According to the utility model, the shaft body abnormal vibration detection assembly is arranged between the main shaft neck of the electric main shaft and the casing, and jumping is generated through coaxial tolerance existing in rotation of the shaft body, so that the insertion rod extends into the sleeve and presses the pressure sensor in the sleeve; whether the problem that the coaxiality tolerance is too large or not exists in the rotation process of the shaft body is obtained through monitoring of the pressure sensor, the noise reduction cotton lining is arranged in the ventilation channel of the machine shell, noise in the ventilation process of the machine shell is reduced, the heat dissipation fins are arranged on the outer surface of the machine shell, the temperature in the machine shell can be rapidly transmitted to the outside, and the heat dissipation efficiency is improved. And the case is prevented from being overheated.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric main shaft instrument technical field, concretely relates to a kind of electric main shaft and its electric main shaft. BACKGROUND

[0002] As the core component in numerical control machine tool, electric main shaft not only has water, but also has air function. Air is mainly to achieve the purpose of air-tightness of the front end of the shaft of electric main shaft, and the purpose of water is to cool the electric main shaft by liquid cooling to avoid overheating. However, in actual application, since the electric main shaft is both air and water, the airflow will generate friction with the airflow channel inside the shell and cause noise. In the case of liquid cooling, the heat exchange performance of the shell greatly affects the cooling speed. In addition, the vibration of the electric main shaft caused by the imbalance of the main shaft, the low installation precision of the bearing or the damage of the bearing, the small pre-load of the bearing, the poor coaxiality of the motor rotor and the stator and the uneven air gap will cause unstable machining conditions and affect the machining precision, and the electric main shaft lacks corresponding abnormal vibration monitoring capability. SUMMARY

[0003] The utility model aims at the deficiencies of prior art, provides a kind of electric main shaft shell and its electric main shaft to solve the problems raised in background art.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] On the one hand, an electric main shaft shell is provided, which includes an electric main shaft shell body, the electric main shaft shell body includes a shell, four ventilation channels are opened at the four corners inside the shell, and a sound-absorbing cotton lining is adhered in the ventilation channel cavity by adhesive, a front pressure end cover is fixed on the front side end surface of the shell, a turbofan is rotatably arranged in the rear end port of the shell, a rear pressure end cover is fixedly connected to the rear end surface of the shell, and 25-50 heat dissipation fins are fixedly connected to the outer surface of the shell.

[0006] As a preferred scheme of the electric main shaft shell, an electric control module is fixedly connected to the top surface of the shell.

[0007] As a preferred scheme of the electric main shaft shell, a channel for airflow circulation is arranged in the inside of the sound-absorbing cotton lining.

[0008] As a preferred scheme of the electric main shaft shell, a notch for installing the electric control module is opened in the top rear area of the heat dissipation fin.

[0009] In another aspect, an electric spindle is provided, comprising an electric spindle shaft body and an abnormal vibration detection assembly fixed at a front shaft neck position of the electric spindle shaft body; the abnormal vibration detection assembly comprises an inner collar fixed at a front side of an outer ring of the electric spindle shaft body, and an outer collar located at an outer ring of the inner collar, an outer ring surface of the inner collar is fixedly connected with eight insertion rods in an annular array, an inner ring side wall of the outer collar is fixedly connected with eight sleeves in an annular array, the sleeves are sleeved on the insertion rods, and a side wall of an inner cavity of each of the sleeves is fixedly connected with a pressure sensor, and an end of the insertion rod away from the inner collar is in contact with a pressure sensing end of the pressure sensor.

[0010] As a preferred solution of the electric spindle, six Z-shaped connecting rods are fixedly connected with the rear end face of the outer collar in an annular array, and one end of the Z-shaped connecting rod away from the outer collar is fixedly connected with the front end face of the front pressure end cover.

[0011] As a preferred solution of the electric spindle, the inner ring side wall of the inner collar and the outer ring of the electric spindle shaft body are fixedly connected with a bearing, wherein the inner ring of the bearing is fixedly connected with the outer ring of the electric spindle shaft body, and the outer ring of the bearing is fixedly connected with the inner ring of the inner collar.

[0012] As a preferred solution of the electric spindle, the rear end of the electric spindle shaft body is fixedly connected with the front end of the turbofan.

[0013] The electric spindle has the advantages that:

[0014] The abnormal vibration detection assembly is arranged between the spindle neck of the electric spindle and the shell, the runout caused by the coaxial tolerance in the rotation of the spindle neck allows the insertion rod to extend into the sleeve and press the pressure sensor in the sleeve, the rotation of the spindle neck is monitored by the pressure sensor to determine whether the coaxial tolerance is too large, the sound-absorbing cotton lining is arranged in the air duct of the shell to reduce the noise in the ventilation process of the shell, and the heat dissipation fins are arranged on the outer surface of the shell, so that the temperature in the shell can be quickly transferred to the outside, and the overheating of the shell is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 It is the overall structure schematic view of the electric spindle and the electric spindle shell.

[0017] Figure 2It is the split structure schematic view of the electric spindle shell.

[0018] Figure 3 It is the structure schematic view of the electric spindle.

[0019] Figure 4 It is the split structure schematic view of the shaft body abnormal vibration detection assembly.

[0020] In the figure,

[0021] 1, electric spindle shell; 11, shell; 12, air duct; 13, electric control module; 14, heat dissipation fin; 15, front pressure end cover; 16, sound-absorbing cotton lining; 17, turbofan; 18, rear pressure end cover; 2, electric spindle shaft; 3, shaft body abnormal vibration detection assembly; 31, outer shaft ring; 32, Z-shaped connecting rod; 33, pressure sensor; 34, plug rod; 35, inner shaft ring; 36, sleeve. Specific implementation

[0022] The technical scheme of the utility model will be further illustrated below by specific implementation and in connection with the drawings.

[0023] Among them, the drawing is only used for example explanation, and the representation is only schematic diagram, and not physical drawing, and can not be understood as the limitation of the patent; In order to better illustrate the embodiment of the utility model, some components of the drawing will be omitted, enlarged or reduced, and not represent the size of actual product; For those skilled in the art, it is understandable that some known structures and their description in the drawing can be omitted.

[0024] The same or similar labels in the drawings of the embodiments of the utility model correspond to the same or similar parts; In the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, structure and operation, therefore the positional relationship of the terms described in the drawing is only used for example explanation, and can not be understood as the limitation of the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0025] In the description of the utility model, unless another explicit provision and limitation, if the connection between the components appears the term "connection" and so on indicates the connection relationship, the term should be understood broadly, for example, can be fixedly connected, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two components or the interaction relationship of two components.For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0026] Example one:

[0027] As Figure 1 And Figure 2 The utility model provides a kind of motorized spindle shell, including motorized spindle shell body 1, motorized spindle shell body 1 includes shell 11, 4 ventilation channels 12 being opened in the inside four corners position of shell 11, and sound-absorbing cotton lining 16 being adhered in the inner cavity of ventilation channel 12 by adhesive, the front side end surface of shell 11 is fixed with front pressing end cover 15, the rear end port of shell 11 is rotationally provided with turbofan 17, the rear end surface of shell 11 is fixedly connected with rear pressing end cover 18, the outer surface of shell 11 is fixedly connected with 25-50 radiating fins 14;The top surface of shell 11 is fixedly connected with electric control module 13, the inside of sound-absorbing cotton lining 16 is provided with passageway for airflow circulation, and the top rear side area of radiating fin 14 is provided with gap for electric control module 13 installation.

[0028] Example two:

[0029] As Figure 3 And Figure 4 The utility model provides a kind of motorized spindle, including motorized spindle shaft body 2 and the shaft body abnormal vibration detection assembly 3 being fixed in the front axle neck position of motorized spindle shaft body 2;

[0030] Shaft body abnormal vibration detection assembly 3 specifically includes the inner ring 35 being fixed in the front side of the outer ring of motorized spindle shaft body 2, and the outer ring 31 being located in the outer ring of inner ring 35, and the outer ring surface of inner ring 35 is fixedly connected with 8 insertion rods 34 in annular array, the inner ring side wall of outer ring 31 is fixedly connected with 8 sleeve pipes 36 in annular array, and the end of insertion rod 34 is contacted with the pressure sensing end of pressure sensor 33, and the inner cavity side wall of sleeve pipe 36 is fixedly connected with pressure sensor 33.

[0031] Specifically, the rear end surface of the outer collar 31 is fixedly connected with 6 Z-shaped connecting rods 32 in a ring array, and the end of the Z-shaped connecting rod 32 away from the outer collar 31 is fixedly connected with the front end surface of the front pressure end cover 15. The inner wall of the inner ring of the inner collar 35 is fixedly connected with the outer ring of the motor shaft body 2, wherein the inner ring of the bearing is fixedly connected with the outer ring of the motor shaft body 2, and the outer ring of the bearing is fixedly connected with the inner ring of the inner collar 35. The rear end of the motor shaft body 2 is fixedly connected with the front end surface of the turbofan 17.

[0032] According to the above-mentioned preferred technical scheme, the working process of the technical scheme is described:

[0033] After the motor shaft body 2 in the outer shell 11 rotates, the rear end of the motor shaft body 2 drives the turbofan 17 to rotate and draws external air into the air duct 12. Since the inner wall of the air duct 12 is provided with the sound-absorbing cotton lining 16, the noise generated by the friction of the air in the air duct 12 is absorbed by the sound-absorbing cotton lining 16, thereby achieving the effect of noise reduction. After the liquid cooling system of the motor shaft body 1 acts, the outer shell 11 is cooled by the liquid cooling system, and at the same time, the excess heat of the outer shell 11 that is not absorbed can be transmitted to the external environment through the heat dissipation fins 14. During the rotation of the motor shaft body 2, if the motor shaft body 2 has a large coaxial tolerance, the rotation of the motor shaft body 2 will produce abnormal vibration, and the vibration will force the inner collar 35 to move in the outer collar 31, and the insertion rod 34 will be inserted into the sleeve 36, so that the end of the insertion rod 34 contacts the pressure sensor 33. When the pressure data of a certain pressure sensor 33 is greater than that of other pressure sensors 33, it can be judged that the shaft body of the motor shaft body 2 at this position deforms.

[0034] It should be noted that the above specific embodiments are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present application. However, as long as these changes do not deviate from the spirit of the present application, they should be within the protection scope of the present application. In addition, some terms used in the specification and claims of the present application are not limited, but are only used for convenience of description.

Claims

1. An electric spindle housing, characterized in that, The utility model provides an electric spindle shell, including the electric spindle shell (1), the electric spindle shell (1) includes the shell (11), 4 ventilation channels (12) are set up in the inside four corner position of shell (11), and the sound absorbing cotton lining (16) is adhered in the inner chamber of ventilation channel (12) through the adhesive, the front side end surface of shell (11) is fixed with the front pressure end cover (15), the rear end port of shell (11) is rotationally arranged with the turbofan (17), the rear end surface of shell (11) is fixedly connected with the rear pressure end cover (18), and 25-50 radiating fins (14) are fixedly connected on the outer surface of shell (11).

2. The electric spindle cartridge of claim 1, wherein, The top surface of the shell (11) is fixedly connected with an electronic control module (13).

3. The electric spindle housing according to claim 1, characterized in that The inside of the sound absorbing cotton lining (16) is provided with a channel for airflow circulation.

4. The electric spindle housing according to claim 1, characterized in that A notch is formed in the top rear area of the radiating fin (14) for mounting the electronic control module (13).

5. An electric spindle, characterized by The electric spindle shell is suitable for any one of claims 1-4, comprising an electric spindle shaft (2) and an abnormal vibration detection assembly (3) fixed to the front shaft neck of the electric spindle shaft (2); The abnormal vibration detection assembly (3) comprises an inner collar (35) fixed to the front side of the outer ring of the electric spindle shaft (2) and an outer collar (31) located outside the inner collar (35), the outer surface of the outer ring of the inner collar (35) is fixedly connected with eight insertion rods (34) in an annular array, the inner wall of the inner ring of the outer collar (31) is fixedly connected with eight sleeves (36) that cover the ends of the insertion rods (34) in an annular array, and the inner wall of the inner cavity of the sleeve (36) is fixedly connected with a pressure sensor (33), and the end of the insertion rod (34) away from the inner collar (35) is in contact with the pressure sensing end of the pressure sensor (33).

6. The electric spindle according to claim 5, characterized in that, The rear end surface of the outer collar (31) is fixedly connected with six Z-shaped connecting rods (32) in an annular array, and the end of the Z-shaped connecting rod (32) away from the outer collar (31) is fixedly connected with the front end surface of the front pressure end cover (15).

7. The electric spindle according to claim 5, characterized in that, The inner wall of the inner ring of the inner collar (35) and the outer ring of the electric spindle shaft (2) are fixedly connected with a bearing, wherein the inner ring of the bearing is fixedly connected with the outer ring of the electric spindle shaft (2), and the outer ring of the bearing is fixedly connected with the inner ring of the inner collar (35).

8. The electric spindle according to claim 5, characterized in that, The rear end of the electric spindle shaft (2) is fixedly connected with the front end surface of the turbofan (17).

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