In the process of mechanical parts manufacturing, cutting tool or grinding wheel left the knife gangrene, chip separation of plastic shape and machine tool vibration, the part that makes for friends, always leave a small is made up of tiny spacing and peak valley bumpy, the uneven surface after rough machining can see with the naked eye, fine add: after surface can still be observed with a magnifying glass or microscope, this part with the surface of the tiny peak valley, the degree and the distance between condition is known as the surface roughness is also called the micro roughness.
Stroke control of oil pressure cutting machine includes upper limit position adjustment and lower limit position control. Its working mechanism upper limit position adjustment has the following several methods.
1. Change the position of travel switch and adjust it by means of mechanical-electric-hydraulic interlock control. 60 ~ 70 s of the 20th century to career, much of the hydraulic cutting machine, cutting machine production at home and abroad is in this way limit position adjustment mechanism, in some new type of cantilever hydraulic cutting machine also has the traditional hydraulic cutting machine used in liquid - electricity - the type of interlock control method, such as Germany scbon company production of le 8, 8 les, 8 lest, lest 8 models, but USES a non-contact switch.
2. Electric: the motor can be adjusted through the mechanical driving mechanism with the power shaft pressing plate, such as the 06135/P1 hydraulic cutting machine with hydraulic swing arm device.
3. Manual: rotate the handwheel, and directly drive the vertical shaft press plate to adjust through the screw movement of the lead screw.
4. Hydraulic operation: rotate the handwheel and adjust the machine automatically through the hydraulic follow-up system.
Automatic cutting machine equipment: computer controlled moving head cutting machine, laser cutting machine (oscillating tool), high pressure water beam cutting machine and computer cutting machine. In addition, the Italian and British company USM manufactures a projection cutting machine with an oscillating tool and a visual observation device on the cutting table for contour scanning of the leather or projecting onto the leather to guide the cutter in arranging the nesting of the cutting plate on the leather.