Parts are the basic elements of a machine. The machine generally includes one or several transmission parts (such as electric motor, internal combustion engine, steam engine) used to receive external energy; the executive part (such as the cutting tool in the machine tool) that transfers the motion and power of the prime mover to the transmission part of the executive part (such as the gear and screw transmission mechanism in the machine tool) to ensure the coordinated work of all parts of the machine And control system (such as CNC system in machine tool) (that is, the machine is composed of prime mover part, transmission part, high-speed computer gong processing execution part, and measurement and control part). By further decomposing the machine, various parts can be obtained.
Parts are the basic elements of a machine, which can be divided into two categories: one is the parts that can be used in all kinds of machines (such as gears, shafts, etc.), which are called general parts; the other is the parts that can only be used in certain types of machines (such as bolt, propeller, etc.), which are called special parts; in addition, the parts combination composed of some cooperative parts is also called Is a component or assembly (e.g. coupling, reducer, etc.)
2、 Precision parts processing plant – strength requirements for parts:
Strength refers to the ability of parts not to break or produce plastic deformation beyond the allowable limit when working, which is the most basic requirement for normal operation and safe production of machines.
The principles and measures to improve the strength of the parts are as follows: 1) increase the size of the dangerous section of the parts, reasonably design the section shape to increase the inertia moment of the section by high-speed computer gong processing; 2) using high-strength materials, heat treatment to improve the strength and reduce the internal stress of the materials; 3) controlling the processing technology to reduce or eliminate the micro defects; 3) strive to reduce the load on the parts; 4) properly involve in the design And the structure of the parts to reduce the stress concentration.
Parts are the basic elements of a machine. The machine generally includes one or several transmission parts (such as electric motor, internal combustion engine, steam engine) used to receive external energy; the executive part (such as the cutting tool in the machine tool) that transfers the motion and power of the prime mover to the transmission part of the executive part (such as the gear and screw transmission mechanism in the machine tool) to ensure the coordinated work of all parts of the machine And control system (e.g. CNC system in machine tool) (i.e. the machine is composed of prime mover part, transmission part, executive part and measurement and control part). By further decomposing the machine, various parts can be obtained.
Parts are the basic elements of a machine, which can be divided into two categories: one is the parts that can be used in all kinds of machines (such as gears, shafts, etc.), which are called general parts; the other is the parts that can only be used in certain types of machines (such as bolt, propeller, etc.), which are called special parts; in addition, the parts combination composed of some cooperative parts is also called Is a component or assembly (e.g. coupling, reducer, etc.)
2、 Precision parts processing plant – strength requirements for parts:
Strength refers to the ability of parts not to break or produce plastic deformation beyond the allowable limit when working, which is the most basic requirement for normal operation and safe production of machines.
The principles and measures to improve the strength of parts are as follows: 1) increase the size of the dangerous section of the part, reasonably design the profile shape, and high-speed computer gong processing to increase the inertia moment of the section; 2) use high-strength materials, heat treatment to improve the strength and reduce the internal stress, control the processing technology to reduce or eliminate the micro defects, etc.; 3) strive to reduce the load on the parts; 4) properly handle the problem And the structure of the parts to reduce the stress concentration.
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