CN202696361U

CN202696361U - Composite electric spindle

Info

Publication number: CN202696361U
Application number: CN 201220333268
Authority: CN
Inventors: 吴国平
Original assignee: CHANGZHOU WUJIN DONGWU MECHANICAL ACCESSORIES Co Ltd
Current assignee: CHANGZHOU WUJIN DONGWU MECHANICAL ACCESSORIES Co Ltd
Priority date: 2012-07-11
Filing date: 2012-07-11
Publication date: 2013-01-23
Anticipated expiration: 2022-07-11

Abstract

The utility model relates to the technical field of mechanical transmission devices, in particular to a composite electric spindle. The composite electric spindle comprises a shell, a stator, a rotor, a spindle and a base, the spindle is inserted into the shell, two ends of the spindle are positioned on the base, the stator is mounted on the shell, the rotor is connected to the spindle, the base comprises a main bearing and a supplementary bearing, the size of the supplementary bearing is smaller than that of the main bearing, and the supplementary bearing is positioned on the outer side of the main bearing. The spindle is supported to rotate by the base with a combined structure of the main bearing and the supplementary bearing, when the spindle rotates in the main bearing, the whole main bearing also rotates in the supplementary bearing, friction force is small, and less heat is emitted. Compared with a common single bearing structure, the composite electric spindle is more flexible and smooth and lower in resistance, so that the rotation speed is higher, the cost is reduced, and the efficiency is greatly improved.

Description

Compound electric spindle

Technical field

The utility model relates to the mechanical driving device technical field, especially a kind of compound electric spindle.

Background technology

At present, in electric principal shaft product series, bearing is inserted in by the working end, be installed on the main shaft, in the constant situation of other conditions, the rotating speed of electricity main shaft is subjected to the restriction of bearing limit speed, in order to improve the limit speed of bearing, people have adopted many methods, such as water-cooled cooling, mist of oil or oil-air lubrication cooling etc., be used for improving the lubricated environment of bearing, but these all only play booster action, can't fundamentally improve the rotating speed of bearing, do not improve all the time the rotating speed of electric main shaft, cause production cost high, inefficiency.

The utility model content

On the low side in order to overcome the existing electric speed of mainshaft, inefficient deficiency, the utility model provides a kind of compound electric spindle.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of compound electric spindle, comprise housing, stator, rotor, main shaft and pedestal, main shaft is inserted in the housing, the two ends frame is on pedestal, stator is installed on the housing, and rotor is connected on the main shaft, and pedestal is comprised of base bearing and supplementary bearing, the size of supplementary bearing is little than base bearing, and supplementary bearing is positioned at the base bearing outside.

According to another embodiment of the present utility model, comprise that further supplementary bearing is installed on the pedestal, is evenly distributed on the periphery of base bearing.

According to another embodiment of the present utility model, comprise that further base bearing is enclosed within on the main shaft, periphery and supplementary bearing are tangent.

The beneficial effects of the utility model are that pedestal adopts the combining structure of base bearing and supplementary bearing, comes the rotation of supports main shaft, contact area between base bearing and the supplementary bearing is less, when main shaft rotated in base bearing, whole base bearing also rotated in supplementary bearing, and frictional force is little, heating is few, more common single bearing structure is more flexible, and is smoother, and resistance is less, thereby obtain higher rotating speed, reduce cost and greatly raise the efficiency again.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is pedestal schematic diagram of the present utility model.

1. housings among the figure, 2. stator, 3. rotor, 4. main shaft, 5. pedestal, 6. base bearing, 7. supplementary bearing.

Embodiment

Structural representation of the present utility model such as Fig. 1, Fig. 2 is pedestal schematic diagram of the present utility model, a kind of compound electric spindle comprises housing 1, stator 2, rotor 3, main shaft 4 and pedestal 5, and main shaft 4 is inserted in the housing 1, the two ends frame is on pedestal 5, stator 2 is installed on the housing 1, and rotor 3 is connected on the main shaft 4, and pedestal 5 is comprised of base bearing 6 and supplementary bearing 7, the size of supplementary bearing 7 is little than base bearing 6, and supplementary bearing 7 is positioned at base bearing 6 outsides.Supplementary bearing 7 is installed on the pedestal 5, is evenly distributed on the periphery of base bearing 6.Base bearing 6 is enclosed within on the main shaft 4, and periphery and supplementary bearing 7 are tangent.

Pedestal 5 adopts the combining structure of base bearing 6 and supplementary bearing 7, come the rotation of supports main shaft 4, the contact area between base bearing 6 and the supplementary bearing 7 is less, when main shaft 4 during in base bearing 6 interior rotation, whole base bearing 6 is also in supplementary bearing 7 interior rotations, frictional force is little, and heating is few, and more common single bearing structure is more flexible, smoother, resistance is less, thereby obtains higher rotating speed, reduces cost and greatly raises the efficiency again.

Claims

1. compound electric spindle, comprise housing (1), stator (2), rotor (3), main shaft (4) and pedestal (5), main shaft (4) is inserted in the housing (1), the two ends frame is on pedestal (5), and stator (2) is installed on the housing (1), and rotor (3) is connected on the main shaft (4), it is characterized in that, pedestal (5) is comprised of base bearing (6) and supplementary bearing (7), and the size of supplementary bearing (7) is little than base bearing (6), and supplementary bearing (7) is positioned at base bearing (6) outside.

2. compound electric spindle according to claim 1 is characterized in that, supplementary bearing (7) is installed on the pedestal (5), is evenly distributed on the periphery of base bearing (6).

3. compound electric spindle according to claim 1 is characterized in that, base bearing (6) is enclosed within on the main shaft (4), and periphery and supplementary bearing (7) are tangent.