CN201307787Y

CN201307787Y - Rotating shaft being matched with a rotor iron core

Info

Publication number: CN201307787Y
Application number: CNU2009200357418U
Authority: CN
Inventors: 韩学慧; 钱志刚; 徐进
Original assignee: Changzhou Fulling Motor Co Ltd
Current assignee: Changzhou Fulling Motor Co Ltd
Priority date: 2009-03-18
Filing date: 2009-03-18
Publication date: 2009-09-09
Anticipated expiration: 2019-03-18

Abstract

The utility model relates to a rotating shaft which is matched with a rotor iron core, which comprises a supporting part, a work part and a shaft shoulder, wherein, the rotor iron core is sleeved on the outer surface of the work part and is positioned through the shaft shoulder. The outer surface of the work part is provided with a uniform sand layer. The work part of the rotating shaft and the rotor iron core are fixed by coating adhesive; the outer surface of the work part of the rotating shaft is uniformly coated with sand layer, the adhesion strength between the rotating shaft and the rotor iron core is improved; even the motor works at high speed and high temperature, the rotor iron core and the rotating shaft are free from being separated from each other, thereby ensuring the long-term stable work of the motor.

Description

A kind of rotating shaft that matches with rotor core

Technical field

The utility model relates to a kind of rotating shaft, relates to a kind of rotating shaft that matches with rotor core more specifically.

Background technology

At present, the rotor of motor comprises rotor core and rotating shaft, and rotor core is enclosed within the rotating shaft outer surface, and rotating shaft outer surface and rotor core inner surface are coated with Chemical Felter respectively and fix.And rotating shaft outer surface and rotor core inner surface are very smooth often, fix the two with Chemical Felter then be difficult to realize the two synchronous requirement if directly be coated with, especially when turning round under the situation of motor at high-speed and high-temperature, bigger centrifugal force is easier to come off rotor core and rotating shaft, influence the operation of motor, even damage motor.Way at present commonly used is that the outer surface that rotating shaft matches with rotor core is processed into helicitic texture, be coated with again with Chemical Felter to strengthen the adhesion strength between rotating shaft outer surface and the rotor core inner surface, and this helicitic texture makes the binding agent between rotating shaft and the rotor core cover inhomogeneous, it is blocked up to the adhesive thickness between the rotor core inner surface to be coated in Bottom of Thread, and the adhesive thickness that is coated between thread crest and the rotor core inner surface is thin excessively, blocked up or thin excessively adhesive thickness all can influence its adhesion strength, of long duration situation loosening between rotating shaft and the rotor core, the useful life of having reduced motor still can appear.

The utility model content

For addressing the above problem, the utility model provides a kind of rotating shaft that matches with rotor core, makes that the adhesion strength between rotating shaft and the rotor core strengthens the life-span of having improved motor.

For achieving the above object, technical solution of the present utility model is:

A kind of rotating shaft that matches with rotor core, comprise support section, working portion, the shaft shoulder, described working portion matches with a rotor core, and described rotor core is enclosed within the outer surface of working portion, and by shaft shoulder location, described working portion outer surface has the layer of even layer of sand.The sand grains fineness degree of described layer of sand is in 200～320 order scopes, and preferable range is 280～300 orders.

By coated with adhesive the two is fixed between the working portion of the utility model rotating shaft and the rotor core, the outer surface of the working portion of rotating shaft is through evenly blasting treatment, the sand grains fineness degree of layer of sand is in 200 orders～320 order scopes, the projection of sand grains and the pit between the sand grains have strengthened the area that covering of binding agent, improved the compatibility of rotating shaft and binding agent, improved the adhesive strength of rotating shaft and rotor core greatly, and the sand grains fineness degree is greater than 320 orders or less than 200 orders, and the adhesive strength between rotating shaft and the rotor core will reduce greatly.

Even the utility model motor is worked under the condition of high speed, high temperature, can not occur situation loosening between rotor core and the rotating shaft yet, thereby guarantee that motor can stable for a long time work.Simultaneously, the processing technology of the even layer of sand structure of rotating shaft working portion outer surface is simple, can fine controlling dimension.

Description of drawings

The structural representation that Fig. 1 matches with rotor core for the utility model.

Fig. 2 is the I enlarged drawing among Fig. 1.

Among the figure: 1-support section, 2-working portion, the 3-shaft shoulder, 4-bearing, 5-rotor core, 6-magnet steel, 7-spray-up, 8-glue.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is explained in detail.

As shown in Figure 1 and Figure 2, a kind of rotating shaft that matches with rotor core comprises support section 1, working portion 2, the shaft shoulder 3.

Support section 1 is installed bearing 4, and rotor core 5 is enclosed within the outer surface of working portion 2, and left end is by the shaft shoulder 3 location.For magneto, need have a magnet steel 6 to be enclosed within the outer surface of working portion 2, among Fig. 1 magnet steel 6 about between two rotor cores 5.

Outer surface at working portion 2 is coated with layer of even layer of sand 7, and present embodiment sand grains fineness degree is that 296 order effects are better.

Glue coated 8 is fixing with rotor core 5 with rotating shaft working portion 2 on the inner surface of the outer surface of the layer of sand 7 of working portion 2 and rotor core 5.The outer surface of the working portion 2 of rotating shaft is after even blasting treatment, the projection of sand grains and the pit between the sand grains have strengthened the area that covering of glue 8, improved the compatibility of rotating shaft working portion 2 with glue 8, improved the adhesive strength of rotating shaft and rotor core 5 greatly, adhesive strength can reach 112N.m, and rotating shaft when not having layer of sand 7 and the adhesion strength between the rotor core 5 only be 56N.m, even so the utility model when the motor magneto of big moment (especially for) at a high speed, work under the condition of high temperature, can not occur situation loosening between rotor core 5 and the rotating shaft yet, thereby guarantee that motor can stable for a long time work.In addition, rotating shaft working portion 2 outer surfaces be uniform layer of sand structure, the fine control of its thickness, and processing technology is simple.

Claims

1. rotating shaft that matches with rotor core, comprise support section (1), working portion (2), the shaft shoulder (3), described working portion (2) matches with a rotor core (5), described rotor core (5) is enclosed within the outer surface of working portion (2), and by the shaft shoulder (3) location, it is characterized in that: described working portion (2) outer surface has layer of even layer of sand (7), and the sand grains fineness degree of described layer of sand (7) is in 200～320 order scopes.

2. the rotating shaft that matches with rotor core according to claim 1, its feature with: the sand grains fineness degree preferable range of described layer of sand (7) is 280～300 orders.