This paper introduces the development status of computer simulation technology in NC turn-milling machining, and puts forward the problems existing in machining process simulation.
The development trend of computer simulation of machining process is analyzed.
Keywords: simulation of turning process; Simulation of milling process; Geometric simulation; Physical simulation; analog simulation
Abstract: This paper introduces the application of simulation technology in turn-milling NC machining.
uced。 The problems existing in machining simulation technology and the development trend of simulation technology are put forward
The machining technology is analyzed.
Keywords: turning simulation; Simulation of milling process; Geometric simulation; Physical simulation; imitate
introduce
China is already a big manufacturing country. But the simulation of machining process is virtual.
It plays an important role in the proposed manufacturing, and the research institute can evaluate it through process simulation.
Design the machinability of parts, verify the correctness of numerical control program, and avoid
The trial cutting process in traditional product development [5] predicts the breakage and grinding of tools.
Damage, understand the influence of the change of machining parameters and material parameters on the machined surface.
Ring, including its surface accuracy, hardness and surface residual stress, etc. , yes
The intelligent realization of the actual machining process creates favorable conditions, and at the same time it
It is also an important means to study the processing process. Turning and milling are the current requirements.
With the most extensive processing methods, so CNC turning and milling.
Line simulation has important theoretical research and practical application value. Get in the car,
Virtual simulation of milling process, reasonable selection of process parameters with reference to simulation results.
Turning speed, back feed and feed speed; Geometric knot of tool
Structure (rake angle, rake angle and chip breaker, etc.). ) has been optimized. purpose
It is to reduce cutting force, improve metal removal efficiency and improve machined surface.
Quality, optimization of processing technology, etc. Virtual machining process simulation includes geometry.
Simulation and physical simulation. There are also researchers in China who are committed to
Physical simulation unit of machining process oriented to machining quality analysis and prediction
Research and development of the system. By summarizing the turning and milling process
The development status of computer simulation technology is analyzed.
Development trend of machining.
1 Geometric simulation of machining process
At present, the research on geometric simulation of machining process at home and abroad
Mature and developed simulation software or simulation with commercial value.
Modules, such as Vedcut of CG- Tech and Delmia of France.
The company's VNC. At the same time, in order to improve the utilization rate of CNC machine tools and avoid people
Due to the disadvantages brought by workers' choice of processing parameters, various scholars have put forward it on the Internet.
Adaptive parameter optimization method and off-line parameter optimization method. Offline parameter
Digital optimization is to predict the machining state and combine it before actual machining.
Combining the existing experience and data, optimize the processing parameters. In addition to pretreatment
Firstly, the processing parameters are determined, and the determined processing parameters are compared according to the optimization goal.
Besides the traditional fixed parameter optimization method, the variable parameter optimization is also simulated.
This method is more to simulate the actual machining through the NC machining simulation system.
Process, in order to obtain the best parameters of actual processing. Off-line parameter optimization of machining
Efficiency, processing cost and processing quality.
[6] Establish a mathematical model, select the processing parameters to be optimized, and then select
Use the appropriate optimization algorithm to select a group for a specific process of a specific part.
Fixed optimal parameters. The off-line variable parameter optimization method takes the feed speed as
Design parameters, with machining time as the optimization goal and maximum milling force as the goal.
As a major constraint. In quite a few cases, the processing speed is the fastest.
And the shortest processing time does not necessarily mean the highest production efficiency,
Processing cost, processing quality and other factors are also crucial to production efficiency.
Important [7]. In the case of tool path determination, in addition to the feed speed
In addition, cutting speed is also an important machining parameter that can be adjusted. Practical students