Analysis of Error Sources of Automatic Winding Machine

2019-05-24 11:46:11 HUIYUECN 0

Analysis of Error Sources of Automatic Winding Machine

 In the operation of the automatic winding machine, the error caused by the motor driving the ball screw can not be ignored relative to the two shaft rotating shafts that hold the fixed core rod. Therefore, we need to pass the screw error. The data is extracted and analyzed, and then filtered to obtain more accurate compensation data. Therefore, the control model needs to be optimized, and some error characteristics of the ball screw are introduced before optimization. Then Hui Yue gives you an analysis of the source of error in the automatic winding machine.

Fully automatic winding machine

1) Ball screw error characteristics

The ball screw consists of a screw, a nut and a ball. In the automatic winding machine, the ball screw is used as the transmission component of the winding machine. Its main function is to convert the rotary motion into linear motion, or convert the torque into an axial repetitive force, and at the same time, it has high precision and reversibility. And high efficiency features.

Since the transmission error of different grades of ball screws is different, the transmission error curve of the ball screw is roughly as shown in Figure 2.5.
Analysis of Error Sources of Automatic Winding Machine.png

 In Figure 2.5, the ordinate E represents the error, the abscissa P represents the stroke of the lead screw, the curve L1 is the actual running curve, and L2 is the error mean line. Corresponding to different grades of screw, the error level of different strokes is different. For high-grade screw, the transmission precision is the highest. The curve shown in Figure 2.5 is only for the single-stroke transmission of the wire ball. The trend of error changes, also need to consider the backlash of the screw when the ball screw moves in the opposite direction.

In order to facilitate the visualization and analysis, we have explained the set of data curves actually measured. By using a laser interferometer, the ball screw with a lead of 4 mm used by the device is sampled in 0.1 mm steps driven by the servo motor. Obtain the cumulative error data of the horizontal table within 300mm of a single stroke, and generate the curve shown in Figure 2.6. The vertical axis is the cumulative transmission error of the ball screw under servo drive. The minimum scale unit is 10μm and the horizontal axis is The linear motion of the screw is linear, the minimum unit is 0.1mm; the total stroke is 300mm. Figure 2.6 does not really reflect the general trend in Figure 2.5. This is because the transmission error of the lead screw has a great relationship with the mounting of the motor shaft, the mounting of the guide rail plane, and the mounting plane of the lead screw itself. The transmission error curve of the ball screw can detect the installation accuracy of the winding machine system, and the relationship between the two in the curve also has a considerable application value for the design, installation and commissioning of the winding machine. As shown in Figure 2.6
Analysis of Error Sources of Automatic Winding Machine.png

Analysis of Error Sources of Automatic Winding Machine

The wave curve shown in the curve indicates the trend of the ball screw drive in each lead. In order to fully explain this trend, the data of the first 120 points of the measured data is amplified. The total stroke of 120 points is 12mm, and the ball screw rotates three times. The corresponding curve relationship is shown in Figure 2.7.

Analysis of error sources of automatic winding machine 2

Analysis of the curve shown in Figure 2.7 shows that the corresponding drive error is approximately sinusoidal within the lead screw lead.

The point that needs to be added here is why the single-stroke error of the lead screw is measured, and the backlash of the lead screw is not measured because the backlash of the lead screw at different points will change, which is not conducive to systematic errors. Accurate analysis, in addition, the most important reason is to avoid the backlash of the screw by special control method, which reduces the difficulty of development and control of the system, thus better controlling the running precision and facilitating engineering application.
Analysis of Error Sources of Automatic Winding Machine.png

2) Prerequisites for static error compensation

The fitting of any curve is for a static process, that is to say, the error curve of the system is assumed to be constant, or it is changed within the tolerance of the error. However, for the error of the ball screw, the preconditions for error compensation are shown in the following aspects.

The first is because the working environment of the equipment is to purify the approximate constant temperature environment, because the thermal expansion coefficients of different materials are different, so when the temperature fluctuates, the error curve of the screw drive will have obvious fluctuations, which has passed a large number. The measurement experiment was verified. However, when the temperature is constant or fluctuates within plus or minus 2 °C, the trend of the static error curve of the 300 mm stroke will not change significantly, and the cumulative error will vary from approximately 12 to 13 μm for each lead. The error curve has minimal impact.

Second, because the system is a single-stroke operation, the backlash of the screw is not considered, and the high-precision zero calibration process makes the starting zero of the error curve relatively unique.

Combining the above two factors, it can be considered that the error compensation method of this curve fitting is feasible. And this so-called static error compensation is also meaningful. Then fitting the data curve through the error data to obtain an approximate curve equation is very meaningful for engineering applications.

3) Error data analysis and filtering

In order to make the model more accurate, it is necessary to compensate the error of the lead screw. The compensation method differs depending on the control method. However, in any case, it is necessary to find the law of the error change, so as to operate it in the control model. The influence of precision is minimized, so it is inevitable that the curve is fitted. When the curve and data shown in Figure 2.6 and Figure 2.7 are obtained, the data can be fitted by the simulation software. The purpose is generally to verify by a set function relationship, to find the change law of error data through the function relationship. The engineering usually uses the least squares method to fit, and the fitting curve is similar to that in Figure 2.5. Take the curve equation of the line L2, infinite approximation. Then based on the relevant theory of digital signal processing, a special filtering algorithm is designed to filter the data, and the collected data is filtered to obtain more accurate compensation data.

The above is the error source analysis of the automatic winding machine. If you need to buy or customize the automatic winding machine, you can contact our company and contact our business staff to purchase or customize the automatic winding machine, thank you.


I am Dongguan Juke Industrial Development Co., Ltd., our company is a transformer automation production equipment supplier.

The following are the company introduction of our company and some transformer automatic production equipment supplied by our company. If you need to purchase or customize the transformer automatic production equipment, you can contact our company and contact our business personnel to purchase or customize the transformer automatic production equipment. Thank you.

Dongguan Juke Industrial Development Co., Ltd. is a professional automation workshop production line solution provider for high frequency transformer peripheral equipment.

Juke Industry is dominated by Taiwanese technology, and all raw materials are selected and processed in strict accordance with Taiwan Standard Huai, and with the excellent technology and professional services to create maximum value for customers, and determined to become the world's high-frequency transformer automation equipment program The leading brand.

Juke Industry adheres to European standards, and its product series include: transformer inserting machine, ei type transformer inserting machine, transformer EI inserting machine, transformer core inserting machine, transformer automatic casing machine,Insulation casing automatic through machine, transformer core assembly machine, transformer Magnetic core assembly rubberizing machine, (automatic magnetic core assembly + wrapping tape + test + wobble plate), transformer automatic winding machine, transformer coil winding machine, Transformer Coil Winding Machine,CNC automatic winding machine, Coil Spindle Winding MachineSingle Spindle Winding Machine,CNC coil winding machine, CNC single axis Winding machine, single-axis coil winding machine, single-axis inductor winding machine, single-axis winding machine, double-axis winding machine, multi-axis winding machine, 6/8/16/12-axis automatic winding machine, 6/8/16/12 axis automatic transformer winding machine, ring winding machine, ring type rubber winding machine, automatic winding machine, enameled wire automatic dividing machine, microcomputer automatic cutting machine, fully automatic Winding + tape machine, (USB charger automatic film machine), automatic rubberizing machine, semi-automatic tape machine, transformer magnetic ring inductance double pressing automatic rubberizing machine, automatic film laminating machine,Vacuum pressure impregnation electric motor equipmentvacuum pressure impregnation process for transformersvacuum pressure impregnation (vpi)vacuum impregnation machine, (single Double cylinder difference: single cylinder automatic vacuum impregnation machine, double cylinder automatic vacuum impregnation ), transformer flip soldering machine, double soldering machine, automatic soldering machine and semi-automatic soldering machine (also called flip soldering machine),Transformer Angular Soldering Machine, full visual COB dispensing machine, transformer integrated tester, computer cutting and stripping machine, automatic constant temperature oven , Magnetic ring inductors, shearing and forming machine, magnetic core inductor automatic footing machine, double Y-axis coordinate automatic locking screw machine, desktop automatic dispensing machine, transformer filling vacuum defoaming machine, transformer automatic copper foil adhesive High-frequency transformer peripheral automation equipment such as machine,Transformer Automatic Taping Machinetransformer core taping machineautomatic coil taping machine,infrared tunnel furnace, ultraviolet curing furnace, baking line,,Transformer assembly production linecore automation production line.etc. The products are widely used in high and low frequency transformers, ballasts and motor factories. In order to meet the needs of the market, in 2008, an branch of Yixiu District, Anqing City, Anhui Province, formed a group of professional and technical personnel to provide quality services to customers.

I am the business officer of Dongguan Juke Industrial Development Co., Ltd., our company is a transformer automation production equipment supplier. Below is my contact information. If you need to purchase or customize transformer automation production equipment, you can contact me. Thank you for purchasing or customizing transformer automated production equipment.
Company Name: Dongguan Juke Industrial Development Co., Ltd.
Phone / WeChat: 18819603799
QQ: 3407993243
Email:3407993243@qq.com
Manufacturer Tel: 0769-89870552
Company website: http://tc.huiyuecn.com
If you need to buy or customize the transformer automatic production equipment, you can contact our business officer Miss to purchase or customize the transformer automatic production equipment, thank you.

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HUIYUECNautomation main product series: transformer magnetic core automaticwinding machine, automatic tape machine, automatic vacuum impregnationmachine, automatic flip soldering machine, and so on,Products are widely used in high and low frequency transformers, inductors, ballasts and motor manufacturers.Transformer manufacturers prefer a one-stop solution.

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