Machine tool accessories refer to various components and attachments installed on machine tools to cooperate with their operation. There are numerous types of machine tool accessories, which can be classified according to their uses and functions. The following is a general classification and detailed introduction of the components of machine tool accessories. 

I. Cutting Tool Accessories 
Cutting tools: including rotatable and replaceable cutting tools such as turning tools, milling cutters, boring tools, etc. 
The handle: The handle is a component used to clamp the blade, enabling the blade to be connected to the machine tool's tool rest. 

II. Fixture Accessories 
Positioning fixture: It is used to determine the position of the workpiece on the machine tool, ensuring the stability and accuracy of the workpiece during the processing. 
Jig: It is used to clamp the workpiece, keeping it in a relative position with the machine tool, for operations such as cutting and sawing. 
Fixed fixture: It secures the workpiece on the machine tool, maintaining its stability and accuracy during the processing. 

III. Measuring Instrument Accessories 
Measuring tools: Tools used to measure the dimensions, shapes, angles and other parameters of workpieces, such as vernier calipers and micrometers. 
Sensors: Instruments used to detect the operating status of machine tools, such as angular displacement sensors, vibration sensors, etc. 

IV. Lubrication Accessories 
Lubrication device: It is used to supply lubricating oil or grease to various components of machine tools, reducing friction and wear, and enhancing the service life and operational efficiency of machine tools. 
Cooling device: It is used to cool down the machine tool and the workpiece, reduce the heat generated by friction during the processing, and improve the processing quality and efficiency. 

V. Protective Accessories 
Guard shield: It is used to protect the operators of machine tools and the surrounding environment, preventing the splashing of chips, coolant and other substances as well as external interference. 
Safety switch: It is used for safety protection of machine tools. When an unexpected situation occurs, it can promptly cut off the power supply or stop the operation of the machine tool. 

VI. Auxiliary Equipment Accessories 
Hydraulic device: It is used to provide the hydraulic pressure required for the operation of the machine tool, control the movement of the machine tool and the up and down travel of the worktable. 
Pneumatic device: It is used to provide the pneumatic force required for the operation of the machine tool, and to control the start, stop and stroke adjustment of the machine tool. 

The classification of machine tool accessories is not fixed. It may vary depending on the type of machine tool, working mode and processing requirements. The above-mentioned classification and components are only common machine tool accessories. There are many other components and accessories that have not been listed. There are a wide variety of machine tool accessories. Appropriate accessories can be selected according to needs to cooperate with the operation of the machine tool, improving processing efficiency and quality.