A five-axis double swing head gantry milling machine simulating cutting force loading device and using method

Abstract

The invention provides a five-shaft and double-swinging-head planer type milling machine simulated cutting force loading device and a using method. The device comprises an X-direction cutting force loading assembly, Y-direction cutting force loading assemblies, a Z-direction cutting force loading assembly and a swinging head rotating-direction cutting force loading assembly. The method comprises the following steps: hoisting the simulated cutting force loading device on a working table of a machine tool and fixing the simulated cutting force loading device; fixedly connecting a spindle of a cutting tool of the machine tool with a rod body of a ball rod; communicating a corrugated damping tube with a hydraulic oil source; starting a hydraulic pressure maintaining system; setting a cutting force; adjusting the open degree of a valve port of a throttling valve; tightening pre-tightening bolts through a torque wrench so that suction and discharge resistance and friction force of hydraulic oil are equal to the set cutting force, wherein because the suction and discharge resistance of the hydraulic oil cannot be directly read, the suction and discharge resistance is required to be read after a pressure value is calculated through a formula P=F / S, and because the friction force cannot be read directly, the friction force is required to be read after tightening torque is calculated through a formula M=KF'd / mu; starting the machine tool and running a machining program; truly simulating the actual running state of the machine tool under the stress condition; and testing the performance of the machine tool under the current cutting force condition.

Description

technical field [0001] The invention belongs to the technical field of machine tool performance testing, in particular to a five-axis double-swing head gantry milling machine simulation cutting force loading device and a use method. Background technique [0002] At present, for the five-axis double-oscillating head gantry milling machine among CNC machine tools, the five-axis linkage can meet the high-precision machining of complex curved surface parts, and has become an indispensable processing equipment in many industries. Due to different machine tool manufacturers, the machine tool products of each machine tool manufacturer are often different in performance. Due to the differences in machine tool performance, the actual processing capabilities of machine tools are also significantly different. For machine tool purchasing enterprises, they all hope to be able to purchase machine tool products with better performance at a lower price, but the actual situation is that the ...

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Problems solved by technology

[0004] At this stage, there are mainly two ways to realize machine tool performance testing. The first is to realize the actual processing of materials by the machine tool, and the second is to realize the machine tool processing process by computer simulation; the machine tool through the first method Performance testing requires the consumption of a large amount of material objects and processing tools, and the price of processing tools is very expensive. Often a performance test process requires several processing tools, and the above costs are included in the manufacturing cost of the machine tool, but this The machine tool performance test method is the most reliable, which can ensure that the machine tool has the best performance after leaving the factory. The disadvantage is that the manufacturing cost of the machine tool is high; the machine tool performance test through the second method, although the test cost is very low, but the test reliability It is also very low. The computer simulation is the ideal processing process, but the actual processing process is uncertain. Even if the performance test is completed in the computer simulation, the machine tool still cannot avoid failures in the actual processing process. occurs, although the manufacturing cost of the machine tool is reduced, and the performance of the machine tool is also sacrificed

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