At present, there are mainly two types of workpieces for metal cutting FMS: prismatic (including box-shaped, flat-shaped) and rotary (long-axis, disc-shaped). For machining systems, FMS is usually used for machining prismatic workpieces from vertical and horizontal machining centers, CNC combined machine tools (CNC-specific machine tools, interchangeable spindle box machines, modular multi-power CNC machines, etc.) and pallet exchange. The device is composed of a numerical control lathe, a turning center, a numerical control combined machine tool, a loading and unloading robot or a robot and a bar material conveying device.
Because the processing time of prismatic workpieces is long and the process is complicated, in order to realize unattended automatic machining at night, the FMS for processing prismatic workpieces has first been developed. The processing system of the small FMS is composed of 4 to 6 machine tools. The configuration of these CNC machining equipments in the FMS is alternate (parallel), complementary (series) and mixed (and series). See Table 1. It should be noted that these configurations are primarily dependent on machine function, material flow and information flow of the FMS, and not on the physical layout of the processing equipment.
Because the processing time of prismatic workpieces is long and the process is complicated, in order to realize unattended automatic machining at night, the FMS for processing prismatic workpieces has first been developed. The processing system of the small FMS is composed of 4 to 6 machine tools. The configuration of these CNC machining equipments in the FMS is alternate (parallel), complementary (series) and mixed (and series). See Table 1. It should be noted that these configurations are primarily dependent on machine function, material flow and information flow of the FMS, and not on the physical layout of the processing equipment.
| feature | a) alternate form | b) complementary form | c) mixed form |
| Sketch |  |  |  |
| Production flexibility | low | in | high |
| productivity | low | high | in |
| Technical utilization | low | in | high |
| System reliability | high | low | in |
| Investment intensity ratio | high | low | in |
In principle, the FMS processing system should be reliable, automated, efficient, and easy to control. Its practicability, matching and processability are good, and it can meet the size range and precision of the processing object. Material and other requirements. Therefore, you should consider when choosing:
- The process is concentrated. For example, multi-function machine tools and machining centers are selected to reduce the number of work stations and reduce the logistics burden to ensure the processing quality.
- The control function is strong and the expansion is good. If the modular structure is selected, the external communication function and internal management function are strong, and there is a built-in programmable controller and a numerical control system with a user macro program, which is easy to connect with auxiliary devices such as loading and unloading, detection, and various auxiliary functions. System tuning and expansion, as well as reducing the load on the communication network and the superior controller.
- High rigidity, high precision and high speed. Select a machine tool with strong cutting function, stable processing quality and high production efficiency.
- The economy is good. For example, the guide rail oil can be recycled, and the cutting and chip removal processing can be fast and thorough, so as to prolong the service life of the tool. Save system operating costs, ensure that the system can be safe, stable, and run unattended for a long time.
- It is easy to operate, reliable and maintainable. The machine is easy to operate, maintain and maintain, and has a long service life.
- Self-protective and self-maintaining. Such as cutting force overload protection, power overload protection, travel and work area restrictions. The guide rails and the relative moving parts are not required to be lubricated or can be automatically lubricated, and have fault diagnosis and early warning functions.
- Adaptability and protection to the environment. The requirements for temperature, humidity, noise and dust of the working environment are not high. The performance of various seals is reliable and there is no leakage. The coolant does not splash, it can eliminate smoke and odor in time, and the noise and vibration are small, which can protect good production. surroundings.
- other. If the technical information is complete, the various displays and markings on the machine tool are clear, the machine shape and color are beautiful and coordinated with the system.
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