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How much do you know about the selection and application of servo encoders for CNC lathe spindles?

2021-01-11 H:46:12
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How much do you know about the selection and application of servo encoders for CNC lathe spindles?


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CNC lathes are one of the most widely used CNC machine tools. It is mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, cylinders, and conical threads. It can also perform grooving, drilling, reaming, and reaming. Hole and boring etc.

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Turning four kinds of standard threads, metric, inch, modulus and diameter control, is one of the most widely used CNC lathes. However, no matter which kind of thread is turned, a strict movement relationship between the lathe spindle and the tool must be maintained: that is, every time the spindle rotates (that is, the workpiece rotates one revolution), the tool should move evenly by a lead distance (of the workpiece). .




When the CNC lathe is threading, it takes the lead screw route, and the speed is constant. When the tool is retracted, the rotation direction of the spindle is opposite to that of the feed (that is, reverse rotation and no inertia rotation). It's at the same point, it won't mess your teeth. The key point here is that when the spindle is positioned, it is necessary to know which angle the spindle stops at, and the rotation speed of the spindle needs to be controlled when the spindle rotates, and these are achieved by the encoder installed on the spindle.


However, the application and performance stability of unused CNC lathe spindle encoders are quite different! How to choose will directly affect the normal operation of the equipment and the accuracy and quality of the processed parts;


The ADK-D68B15-I1024L1P CNC car spindle encoder has been widely used and recognized by customers. The difference with other products on the market, especially the features of low-priced products are:


1. We use photovoltaic cells for the photoelectric conversion part, and some manufacturers use modules. The difference is that the Z-point cycle of the module is 9 (9T), and it cannot be adjusted and is not accurate; what we generally use is the international standard half cycle (1/2T), which can be adjusted, with high accuracy, and when changing forward and backward. Will be more precise.


2. The code plate we use is made of glass, which has high light transmittance and stable performance. Many manufacturers use film (film material) code discs, although the price is low, but the shock resistance, high and low temperature resistance is poor.


3. We use imported bearings for the transmission part. Compared with ordinary bearings, they have greatly improved accuracy and life.


Also need to pay attention to when selecting:


There are 4 cycles (4T) and one-quarter cycle (1/4T) of the spindle CANopen absolute encoder classified according to the Z point width. The selection should match the spindle speed, otherwise it is easy to appear Disordered teeth and other situations.


In addition, for heavy industry industries such as petroleum, ports, steel, hoisting machinery, etc., we have launched a heavy-duty spindle encoder, which is characterized by enhanced mechanical structure and waterproof and dustproof protection levels to meet the requirements of high-strength and harsh environments. Requirements.


If you have needs in this area or related questions, you need to consult, Weihai Adike Electronic Technology Co., Ltd. is mainly engaged in 485 Modbus absolute encoder, CANopen absolute encoder, industrial Ethernet encoder EtherCAT/TCP, mechanical multi-turn absolute encoder For encoders, servo encoders and other types of encoders, please feel free to contact Adike Electronics! Satisfactory service for customers is the primary purpose of Adike!


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