Shaft parts processing technology (2)

Source: China Bearing Network Time: 2013-06-12

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

According to the scale of production; the casting method of blanks is free forging and die forging. The small and medium batch production is mostly free forging; the large batch is used for die forging.
(2) Information on shaft parts The shaft parts should be selected according to different working conditions and application requirements, and different heat treatment standards (such as quenching, normalizing, quenching, etc.) should be selected to obtain a certain strength. , resistance and wear resistance.
45 steel is a common material for shaft parts; it is cheaper to pass the quenching and tempering (or normalizing); it can get better cutting function; and it can achieve higher strength and durability and other mechanical functions; the hardness after quenching can be Up to 45~52HRC.
40Cr and other alloy layout steels are suitable for shaft parts with medium precision and high speed; after being quenched and tempered, these steels have better inductive mechanical functions.
Bearing steel GCr15 and spring steel 65Mn; after quenching and tempering and surface induction hardening; appearance hardness can reach 50~58HRC; and has high fatigue resistance and good wear resistance; can produce high precision shaft.
The spindle of the fine machine tool (such as grinding wheel shaft and coordinate boring machine spindle) can be used with 38CrMoAIA nitrided steel. This steel can be tempered and externally nitrided; it can not only achieve high surface hardness, but also adhere to the soft core. Therefore, the impact resistance is good. Compared with carburized and quenched steel; it has heat treatment deformation. It catches the damselfly milk. First, the function, layout characteristics and skill requirements of the shaft parts are typical of the machine. One of the parts. It is primarily used to support the transmission components; to transmit torque and to accept loads. The shaft parts are rotating body parts; their length is larger than the diameter; usually the outer cylindrical surface, conical surface, inner hole and thread of the concentric shaft and corresponding The end face is composed of different shapes according to the layout; the shaft parts can be divided into optical axis, stepped shaft, hollow shaft and crankshaft.
The length to diameter ratio of the shaft is less than 5 is called the short axis; the larger than 20 is called the elongated shaft; most of the axes are between the two.
The shaft is supported by bearings; the shaft segments that cooperate with the bearings are called journals. The journals are the mounting reference for the shaft; their accuracy and appearance quality are usually high; their skill requirements are usually based on the primary function and working conditions of the shaft; usually There are the following items:
(1) Scale accuracy The journal of the supporting effect is used to determine the orientation of the shaft; usually its dimensional accuracy is high (IT5~IT7). The accuracy of the journal dimension of the mounted transmission component is usually low (IT6~IT9).

Recommend to friends comments close window

Bearing related knowledge

Large-scale thin-walled bearing outer ring quenching and tempering process to obtain a technical standard for the development of centrifugal pump bearings, the rollover of the rolling bearing (1)
Oil-bearing bearing overview of the layout and use of single row deep groove ball bearings

This article links to http://
Please indicate the bearing network http://

Previous:Small grease smooth analysis of high-speed spindle bearings Next:The use of wheel bearings and equipment considerations

Tactical Vest are one of the most useful and versatile tools in a military, law enforcement or hunting professional's arsenal. High quality Bullet Proof Vest, providing protection against shrapnels and bullets kevlar or PE fabric inside, making it more comfortable and lighter when wearing full body protection. Many bags for kinds of military and police . Made by high density nylon material. Perfect design for wearing, good at body engineering, soft and comfortable. With a constantly increasing availability of new equipment becoming standard, Our Tactical bags could pass USA lab test, We are a professional Chinese manufacturer of Bulletproof vests, and look forward to your cooperation!

Tactical Vest

Security Tactical Vest, Military Tactical Vest, Bullet Proof Tactical Vest, Army Tactical Vest

NINGBO CHIHAN PROTECTION EQUIPMENT CO.,LTD. , http://www.bpvarmor.com