By analyzing the data, the artificial synthetic single crystal diamond was used as the tool material. Through the series of tests as shown in Table 1, the ideal diamond tool parameters are obtained as shown in Table 2. The test conditions are as follows, cutting parameters: n=2500r/min, f=0.3mm/min, ap=0.02mm; the processing material is Ø40μm×500μm copper, and the turning tool is a sharp knife with the cutting edge intersecting two cutting edges. 2 test results and discussion Test system composition The machining test of the micro-axis is carried out on a precision CNC lathe. Since the size of the micro-axis is only a few tens of micrometers, it is difficult to directly observe the eye. To this end, a microscopic observation system is installed on a precision CNC lathe. The main components of the test system are as follows. Hartinge's ultra-precision CNC lathe: CONQUEST GT; machining accuracy: Ra0.05μm. Long working distance microscope: QUESTAR 100. Dedicated image processing system. Scanning electron microscope: KYKY1010B. Figure 1 Block diagram of the microscopic observation system Effect of Cutting Amount on Micro-Shaft Shaping and Surface Roughness Unlike workpieces with large turning dimensions, in the machining of micro-shafts, the amount of cutting not only affects the surface quality of the workpiece, but also whether it can be formed by turning. That is to say, the cutting amount can be turned into a fine shaft only within a certain range, and the smaller the size of the fine shaft, the narrower the selection range of the cutting parameters. Taking the 20μm diameter of the turning shaft as an example, the effects of feed rate, backing amount and cutting speed on the formation of fine shaft and surface roughness are introduced. Previous Next Strobes And Blinders,Stage Strobe Lights,Led Strobe Panel,Led Strobe Blinder EV LIGHT Guangzhou Co., Ltd , https://www.evstagelights.com
The key component of the system is a long working distance microscope with a maximum working distance of 350 mm from the objective lens to the workpiece surface and a maximum resolution of 2 μm. A micro camera is mounted on the microscope, and after image processing, the entire processing of the micro-axis can be observed on the screen of the image display. The system also measures workpiece dimensions in situ with the included dedicated software. The addition of this system also facilitates accurate tool setting for sharp-edged tools.
The fine shaft material is made of copper which is easy to cut by a diamond tool and suitable for micro hole processing. After processing, the surface roughness of the micro-axis was measured using an ALPHA-STEP 500 surface profiler. 