CN201466881U

CN201466881U - AC induction servomotor

Info

Publication number: CN201466881U
Application number: CN2009201076835U
Authority: CN
Inventors: 项久鹏; 周静
Original assignee: BEIJING BEICHAO SERVO TECHNIQUES Co Ltd
Current assignee: BEIJING CHAOTONGBU SERVO CO., LTD.
Priority date: 2009-05-06
Filing date: 2009-05-06
Publication date: 2010-05-12
Anticipated expiration: 2019-05-06

Abstract

The utility model provides an AC induction servomotor. The servomotor comprises a servomotor main shaft, a rotor, a front end cover, a rear end cover and a stator core, wherein the front and the rear end covers are mounted at the two ends of the stator core respectively; the rotor is rotatably sleeved inside the stator core; the servomotor main shaft is fixedly sleeved inside the rotor, and the two ends of the servomotor main shaft are rotatably sleeved on the front and the rear end covers through bearings respectively; and at least one groove heat dissipation structure extending along the axial direction is mounted on the outer surface of the stator core. The utility model adopts the unshelled stator core design, the stator core is directly installed on the front and the rear end covers, and the groove heat dissipation structure is mounted on the stator core, the front end cover and the rear end cover, thereby greatly simplifying the heat dissipation structure of the servomotor, improving the heat dissipation reliability, eliminating the restriction of environmental conditions, decreasing heat dissipation components, diminishing the volume of the servomotor, and reducing the failure rate.

Description

The alternating current impression servomotor

Technical field

The utility model relates to a kind of alternating current impression servomotor.

Background technology

Existing AC servo motor comprises casing, and stator is installed in the casing, and design has heat-dissipating space between stator and the casing, utilizes this heat-dissipating space and the radiator fan that is arranged on the casing to come stator is dispelled the heat.

For such as at the such special occasions of steel sheet production line, use the AC servo motor that has casing like this to exist to install and the problem such as bad of dispelling the heat.

The utility model content

The technical problems to be solved in the utility model provides a kind of AC servo motor with special heat dispersion.

In order to address the above problem, the utility model provides a kind of alternating current impression servomotor, comprise electric machine main shaft, rotor, front end housing, rear end cap and stator core, front end housing and rear end cap are installed in the two ends of stator core respectively, rotor is rotatable to be sleeved in the described stator core, electric machine main shaft is fixedly set in the described rotor, and the two ends of described electric machine main shaft are sleeved on described front end housing and the rear end cap by bearing is rotatable respectively; Described stator core outer surface is provided with at least one groove radiator structure that extends vertically.

Preferably, described stator core comprises and the corresponding stator of described rotor, and is arranged on the end plate of the fixing described stator in described stator two ends.

Preferably, the described electric machine main shaft end that is positioned at described rear end cap also is provided with axial location mechanism.

Preferably, described axial location mechanism is the shaft shoulder that is arranged on described electric machine main shaft, and this shaft shoulder leans on the end face of described bearing.

The utlity model has following advantage:

1, the utility model adopts inorganic shell stator core design, stator core is directly installed on front end housing and the rear end cap, adopt the groove radiator structure on stator core and front end housing, the rear end cap, so just make the radiator structure of motor simplify greatly, the heat radiation reliability improves, and not limited by environmental condition, has also reduced thermal component, reduce motor volume, reduced failure rate;

2, stator punching laminates moulding in the utility model, and two ends are fixed on the end plate, install simple and convenient, and reliability height, and convenient and rotor location, thereby the precision of raising alternating current impression servomotor;

3, the utility model has effectively reduced the axial endplay of electric machine main shaft by axial location mechanism, improves the output accuracy of electric machine main shaft, thereby has improved the precision of alternating current impression servomotor;

4, the utility model adopts photoelectric encoder that motor is carried out SERVO CONTROL, makes that alternating current impression servomotor control precision is higher.

Description of drawings

Below in conjunction with accompanying drawing execution mode of the present utility model is described further:

Fig. 1 shows a kind of alternating current impression servomotor of the utility model half section structural representation;

Fig. 2 shows a kind of alternating current impression servomotor of the utility model perspective view.

Embodiment

As shown in Figure 1, the utility model provides a kind of alternating current impression servomotor, comprise electric machine main shaft 1, rotor 9, front end housing 2, rear end cap 7 and stator core 3, front end housing 2 and rear end cap 7 are installed in the two ends of stator core 3 respectively, rotor 9 rotatable being sleeved in the described stator core 3, electric machine main shaft 1 is fixedly set in the rotor 9, and the two ends of described electric machine main shaft 1 are sleeved on front end housing 2 and the rear end cap 7 by bearing 4 is rotatable respectively; Stator core 3 outer surfaces are provided with at least one groove radiator structure 30 that extends vertically.

The utility model adopts inorganic shell stator core 3 designs, stator core 3 is directly installed on front end housing 2 and the rear end cap 7, adopt groove radiator structure 30 on stator core 3 and front end housing 2, the rear end cap 7, so just make the radiator structure of motor simplify greatly, the heat radiation reliability improves, and not limited by environmental condition, has also reduced thermal component, reduce motor volume, reduced failure rate.

Stator core 3 comprises and rotor 9 corresponding stators 31, and is arranged on the end plate 32 of stator 31 two ends fixed stators 31.Stator 31 punchings laminate moulding in the utility model, and two ends are fixed on the end plate 32, install simple and convenient, and reliability height, and convenient and rotor 9 location, thereby the precision of raising alternating current impression servomotor.

The end that electric machine main shaft 1 is positioned at described rear end cap 7 also is provided with axial location mechanism 5.Axial location mechanism 5 is for being arranged on the shaft shoulder 11 of electric machine main shaft 1, and this shaft shoulder 11 leans on the end face of bearing 4.The utility model has effectively reduced the axial endplay of electric machine main shaft 1 by axial location mechanism 5, improves the output accuracy of electric machine main shaft 1, thereby has improved the precision of alternating current impression servomotor.

Below the utility model is elaborated:

In the present embodiment, stator 31 is made up of polylith, respectively separately with end plate 32 composition stator cores 3, stator 31 is fastened on the end plate 32 by bolt.Every group of stator core 3 is fixed on separately respectively on the end cap 2, and stator 31 just is very easy to the location of rotor 9 like this, and positional precision is very high, and easily, not only improves precision but also reduce working strength.

In the present embodiment, in the axial location mechanism 5, rear end cap 7 is provided with step surface, step surface on the bearing cap 7 is directly pushed down the outer shroud end face of bearing 4, also is provided with back-up ring 6 on electric machine main shaft 1, and back-up ring 6 is pushed down the interior ring end face of bearing 4, bearing 4 other end end faces lean against on the shaft shoulder 11 and bearing tegillum of electric machine main shaft 1, the axial endplay of bearing 4 just becomes very little like this, thereby electric machine main shaft 1 axial endplay becomes very little, has improved the output accuracy of electric machine main shaft 1.

On electric machine main shaft 1, also be provided with motor is carried out servo-controlled photoelectric encoder 8.The utility model adopts 8 pairs of motors of photoelectric encoder to carry out SERVO CONTROL, makes that alternating current impression servomotor control precision is higher.

In sum; it below only is preferred embodiment of the present utility model; be not to be used to limit protection range of the present utility model; therefore; all any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. alternating current impression servomotor, it is characterized in that: comprise electric machine main shaft (1), rotor (9), front end housing (2), rear end cap (7) and stator core (3), front end housing (2) and rear end cap (7) are installed in the two ends of stator core (3) respectively, rotor (9) is rotatable to be sleeved in the described stator core (3), electric machine main shaft (1) is fixedly set in the described rotor (9), and the two ends of described electric machine main shaft (1) are sleeved on described front end housing (2) and the rear end cap (7) by bearing (4) is rotatable respectively; Described stator core (3) outer surface is provided with at least one groove radiator structure (30) that extends vertically.

2. alternating current impression servomotor as claimed in claim 1 is characterized in that: described stator core (3) comprises and the corresponding stator of described rotor (9) (31), and is arranged on the end plate (32) of the fixing described stator (31) in described stator (31) two ends.

3. alternating current impression servomotor as claimed in claim 2 is characterized in that: the end that described electric machine main shaft (1) is positioned at described rear end cap (7) also is provided with axial location mechanism (5).

4. alternating current impression servomotor as claimed in claim 3 is characterized in that: described axial location mechanism (5) is for being arranged on the shaft shoulder (11) of described electric machine main shaft (1), and this shaft shoulder (11) leans on the end face of described bearing (4).