• May 27, 2023

1. The basic composition of CNC milling machine. The most basic composition of CNC milling machine includes six parts: I/O device, CNC device, servo drive device, measurement feedback device, auxiliary device, and machine tool body. The six parts will be introduced in detail below. (1) I/O device. The I/O device is used for the input/output of data such as CNC machining or motion control programs, machining and control data, machine tool parameters, coordinate axis positions, and detection switch states. Keyboard and monitor are necessary and most basic I/O devices for CNC equipment. As the peripheral equipment of the numerical control system, the desktop computer and the portable computer are one of the commonly used I/O devices at present. (2) Numerical control device. The numerical control device is the core of the numerical control system, which is composed of I/O interface lines, controllers, arithmetic units and memory. The function of the numerical control device is to compile, calculate and process the data input by the input device through the internal logic circuit or control software, and output various information and instructions to control the various parts of the machine tool to perform specified actions. Among these control information and instructions, the most basic ones are the coordinate axis feed speed, feed direction, and feed displacement instructions generated after interpolation operations, and are provided to the servo drive device. After being amplified by the driver, the final control Axis displacement. These control information and instructions directly determine the movement trajectory of the tool or coordinate axis. 3) Servo drive. Servo drives are usually composed of servo amplifiers (also known as drives, servo units) and actuators. In CNC machine tools, AC servo motors are generally used as actuators. At present, linear motors have been used in advanced high-speed processing machine tools. In addition, among the CNC machine tools produced in the 20th century, there are also simple CNC machine tools using DC servo motors, and stepping motors are also used as actuators. Servo amplifier It must be used in conjunction with the drive motor. (4) Measuring feedback device. The measurement feedback device is the detection link of the closed-loop (semi-closed-loop) CNC machine tool. Its function is to convert the actuator to Or the actual speed and displacement of the workbench are detected, and fed back to the servo drive device or numerical control device to compensate the feed speed or the motion error of the actuator, so as to achieve the purpose of improving the accuracy of the motion mechanism. The position of the measuring device detection signal feedback depends on the structure of the numerical control system. Servo built-in pulse encoders, tachometers and linear gratings are commonly used detection components. The advanced servo drive device adopts digital servo drive technology (referred to as digital servo), a...

• April 28, 2023

D&S Automatic Co,Ltd International Workers' Day Holiday Notice International Labour Day Holiday is around the corner. Our office will be closed between Apri 29th to May 3nd. lf any issues please send mail ([email protected])to me or call my mobile at +86-13600706701 （Wechat&Whatsapp same number). Best wishes！

• April 22, 2023

Volvo generators are usually composed of stators, rotors, end covers, machine bases and bearings. 1. The stator is composed of the machine base, stator core, wire wrap winding, and other structural parts that fix these parts. 2. The rotor is composed of rotor iron core (with magnetic yoke, magnetic pole winding), slip ring (also known as copper ring, collector ring), fan and rotating shaft and other components. 3. The stator and the rotor of the generator are connected and assembled by the bearing and the end cover, so that the rotor can rotate in the stator and do the movement of cutting the magnetic induction line, thereby generating an induced potential, which is drawn out through the terminal and connected to the circuit, which is convenient A current is generated. Preparations before starting the Volvo generator: 1. Add antifreeze to the installed Volvo generator, see the engine manual for the proportion of antifreeze. 2. Add engine oil to the unit. The engine oil type generally uses APICF-4, W15/40CF grade engine oil. The engine oil should be added to the static full line of the oil level gauge on the engine. Too much or too little engine oil is harmful to the engine. unfavorable. 3. Connect the fuel pipeline and drain the air in the fuel inlet pipe to easily start the Volvo generator set. The fuel is domestic 0 or -10 light diesel. 4. According to the power of the Volvo generator, select a wire suitable for the current carrying capacity, and connect it to the output end of the main circuit output circuit breaker. When wiring, pay attention to the phase line and the neutral line, and do not connect them incorrectly. 5. Check whether the grounding of the controller is good (connected to the engine casing), and the Volvo generator set, the chassis, the box (low noise), and the control cabinet should be reliably grounded to the earth. 6. Connect the battery wire, do not connect the positive and negative poles wrongly when wiring, first connect the positive battery wire, and then connect the negative battery wire. 7. Check the bolts of the main connecting parts of the unit, the fixing bolts of the instruments and components in the control panel, and the bolts of the wire terminals, and they should be tightened. 8. Before starting the machine, the main circuit breaker should be in the off position. 9. If the above checks are correct, start the test run. Before putting it into the load operation, check the phase sequence to see if it is in the same phase sequence as the mains. After confirming that it is correct, then put it into the load operation. Choose D & S Automatic, we will provide you with the best service.

• March 10, 2023

Core-making machine Core-making machine core-making machine Core-making machine core-making machine Casting equipment used to make cores. According to the different methods of real sand during core making, core shooting machines and core making machines can be divided into shock core making machines, core extrusion machines and core shooting machines. The vibrating core making machine is used to produce large and medium-sized sand cores that are hardened outside the core box, and can also be used for no-bake sand cores that are hardened inside the core box. It compacts the core sand by shock action. The core extrusion machine is used for sand cores with constant cross-sectional shape. The core shooter is a core-making equipment developed in the 1950s (Figure 1). The working principle of the core shooting machine is shown in Figure 2. When shooting sand, the compressed air quickly enters the sand shooting cylinder, pushes the sand particles through the gaps in the sand layer, and forms a sand air flow, so that the core sand is injected into the core box at high speed, and the core box is filled at the same time. Tight. The size of the core made by the core shooter, the surface is smooth. According to the shape and size of the core and the binder used in the core sand, the core shooting machine is divided into: ①The hot core box core shooting machine is a small and medium-sized core making machine with thermosetting resin as the binder. Heat hardens the core. ②The shell core machine is used to manufacture thin shell cores. The sand surface of the core sand is pre-covered with a phenolic resin film, which is hardened in a heated core box. ③The cold box core shooter is a small and medium-sized core making machine with resin as the binder, blowing air into the cold core box to harden the core. ④ Ordinary core shooters use vibrating sand buckets to add sand to make cores hardened outside the core box. Coated sand core shooting machine solves the problem of labor shortage in foundries flexible. The driving method of the coated sand core shooting machine is pneumatic, and it is used in conjunction with an air compressor. Equipped with mold cleaning and coating device. The machine is easy to operate and easy to use, even a lesbian can easily operate it. Equipped with a pneumatic sand feeding device, which can automatically add sand quantitatively. Thereby greatly reducing the labor intensity of workers. Special specifications can be designed and manufactured according to the needs of users. It can also design supporting designs and make molds for users. The advent of the coated sand core shooting machine has led to manual core making, and a part of it can also be made into a sand-coated shell casting method, which reduces the occupied area of the casting workshop, and how many layers can be stacked together. Simple, convenient, high utilization rate of molten iron. At the same time, the coated sand core shooting machine also solves the problem of labor sh...

• March 10, 2023

  1. The water tester is used to test the glue effect of the glue strip. Air-tightness testing equipment is used to test whether there is water leakage, belt wear and other problems at the glued position in the form of hydraulic pressure. Generally test 3PSI for two minutes without water leakage, the bonding effect is considered qualified.   2. The test needs to be done step by step, first try IPSI/30 seconds, and slowly progress to 3PSI/2 minutes. Abnormal results caused by sudden pressure can be avoided.   3. Adjust the tightness of the "iron ring" of the water testing machine. If it is too tight, it will damage the rubber layer and film of the fabric, and the air tightness test will even leave marks on the fabric; if it is too loose, the water pressure will not meet the standard and cause not getting normal results   4. The glue layer and film of some fabrics are easily damaged, and the "iron ring" of the air tightness tester needs to add a layer of soft fabric. Prevent the "iron ring" from damaging the glue layer and film of the fabric.   5. The water used by the water testing machine must be clean and free of impurities, so as to avoid debris from clogging the pipes, and the waterproof tester will cause inaccurate data on the pressure gauge. The pipes and water container of the water tester need to be cleaned regularly.   6. When testing the water test machine, the airtight leak tester may have fabrics that are easy to absorb water, which should be handled carefully to prevent the fabrics from absorbing moisture and being difficult to dry, which will affect the subsequent processing and final packaging.    Choose D & S Automatic, we will provide you with the best service.

• February 02, 2022

The full name of the salt spray test machine is a salt spray test machine, which is mainly used to test the corrosion resistance of samples. At present, it is widely used in aerospace industry, automotive electronics, electronic electrician, mobile phone digital, plastic products, metal materials and other industries to test its corrosion resistance. It is also to simulate extreme conditions under natural conditions or working conditions to understand the properties of each sample. performance temperature. The working principle of the salt spray testing machine is relatively simple. It mainly uses corrosive gas and liquid to spray the sample. By spraying the corrosive gas and liquid until the corrosion of the sample occurs, the longer the time is as the corrosion resistance of the sample, the It means that the corrosion resistance of the sample is better. The working principle of the salt spray test is to compress the corrosive solution into an air spray, and then wrap the spray on all sides of the sample as much as possible. This test can be carried out continuously or cyclically until the expected corrosion phenomenon appears on the sample. The corrosion time is then recorded to indicate the corrosion resistance of the sample. Generally, the corrosion solution in the salt spray testing machine is mainly 5% sodium chloride solution or adding 0.26 grams of copper chloride per liter to the sodium chloride solution as a salt spray corrosion solution. In addition, the salt spray testing machine can independently adjust the settlement and spraying volume of salt spray to ensure constant test temperature, convenient operation and stable test environment. Therefore, it is often used to test the corrosion resistance of daily necessities or industrial products. Choose our D&S machines to provide you with the best salt spray testing machines.

• January 16, 2023

D&S Automatic Co,Ltd Spring Festival Holiday Notice Spring Festival Holiday is around the corner. Our office will be closed between Jan 17th and Feb 1st. lf any issues please send mail ([email protected])to me or call my mobile at +86-13600706701 （Wechat&Whatsapp same number). Best wishes！

• December 30, 2022

The New Year is coming. Our office will be closed between January 1st and January 3th. lf any issues, please send mail ([email protected])to me or call my mobile at +86-13600706701(Wechat&Whatsapp same number). Best wishes！