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The principle of CNC machining principle is revealed
Editor:Hangzhou Fuyang Zhongrui Precision Hardware Processing Co. LTDDate of issue:2019-05-20 16:06 Number of visits:
CNC walking machine is also called the headstock moving type CNC lathe. The difference between its working principle and ordinary CNC lathe is that when machining slender shaft parts, the tool does not move, and the Z axis direction is the spindle mounting of the spindle box. The chuck clamping material moves forward and backward, the material enters the spindle from the rear end of the spindle box through the automatic feeder, and then enters the movable guide sleeve at the front end of the spindle through the pre-installed spring collet, through the alloy fixed in the movable guide sleeve. The guide sleeve rotates synchronously with the movable guide sleeve, and at the same time functions as a supporting material. In practical applications, depending on the processing needs of products in different industries, guide bushings and bushingless bushings may be used. The difference between the guide sleeve and the guideless sleeve structure of the CNC walking machine is:
The movable guide sleeve is composed of a plurality of components, including a transmission shaft, a guide sleeve support frame, a guide sleeve outer wall, a slewing bearing, and a first and second timing belt. The spindle rotates through the first timing belt to drive the transmission shaft, and the transmission The shaft drives the movable guide sleeve through the second timing belt, so that the movable guide sleeve and the main shaft reach the same rotation speed, thereby minimizing wear and product precision of the raw material. The biggest advantage of the core machine structure is the slender shaft machining. The parts with high hardness and high product precision, but the tailings are long, it is easy to cause waste of raw materials.
The guide sleeve is not long, the front end of the spindle is lengthened, and the movable guide sleeve part is removed, so that it directly passes through the knife holder board. The biggest advantage of the core-cutting structure is that the tail material is relatively short, no waste of raw materials, but only suitable for the aspect ratio. It is not large, the material hardness is not very high, the raw materials are short, and the flat material that can not be fed by the feeder is used. At the same time, it has a certain amount of influence on the core machine spindle and the spindle bearing and the service life.
When the workpiece is machined, it will encounter the problem that the tailings are too long. The tailings are between 120mm-180mm. This is the walking machine with the guiding device. The moving machine without the guiding device is actually the cutting machine. It can Shorten the problem of tailings. However, if you encounter a harder material and a slender shaft type workpiece, there is no advantage. The product generally selects the appropriate equipment according to the difficulty level. The core machine can be used for turning, milling and drilling various power milling. Hybrid machine. It is suitable for machining shaft parts with complex parts, high precision requirements and large quantities.