Single chip microcomputer STM32L151CCU6 SMD aluminum electrolytic capacitor 1. Mechanical part The machine tool consists of two parts: the work table, the main shaft slide, etc. are moving parts; the bed, the base, the column, etc. are non-moving parts. (1) CNC milling and CNC machining centers have high requirements on the non-moving parts and moving parts of CNC milling and CNC machining centers, so heavy cutting can be performed. However, because the moving parts are also huge, the machine...
Photocoupler 1. The orientation of the spindle of a CNC machine tool machining center is usually in three ways, magnetic sensor, encoder and mechanical orientation. When using magnetic sensors and encoders, in addition to adjusting the position of the components, the machine parameters can be adjusted. When there is a directional error, there is almost no alarm, and it can only be discovered when an interruption occurs during the tool change. 2. Fault phenomenon: Once there was a fault in the...
Single chip microcomputer STM32L151CCU6 Seiko original 32.768KHZ 3215 (3.2*1.5mm) 12.5P SMD aluminum electrolytic capacitor In production, it is often encountered that the machining accuracy of CNC machine tools is abnormal. Such faults are highly concealed and difficult to diagnose. There are five main reasons for this type of failure: (1) The machine feed unit has been changed or changed. (2) The zero offset (NULL OFFSET) of each axis of the machine tool is abnormal. (3) The axial backlash...
Programmable Package SG-8018CA(SG7050C) 0.67M~170M WIFI test head can be customized for other specifications one. Commissioning of CNC Machine Tool Machining Center The purpose of CNC machine tool machining center debugging is to check whether the machine tool installation is stable, and whether the transmission, operation, control and other systems are normal and sensitive. Try to run the test as follows: ◆ Add a lubrication point according to the requirements of the manual, fill the hydraulic...
Single chip microcomputer STM32L151CCU6 Factory direct sales - solid capacitor - patch aluminum electrolysis, to ensure that the factory first-class goods! The machining center adds an automatic tool changer and tool magazine to the common CNC machine tool, and has an automatic indexing rotary table or headstock (automatically changing the angle) and other auxiliary functions, so that the workpiece can be clamped once. After that, the processing of drilling, expanding, reaming, boring, tapping,...
Single chip microcomputer STM32L151CCU6 Seiko original 32.768KHZ 3215 (3.2*1.5mm) 12.5P SMD aluminum electrolytic capacitor Numerical control system parameters change or modification, mechanical failure, CNC machine tool electrical parameters are not optimized motor operation abnormality, CNC machine tool position loop abnormality or control logic is not appropriate, is a common cause of abnormal machining accuracy of CNC machine tools in production, find relevant fault points And processing,...
Programmable Package SG-8018CA(SG7050C) 0.67M~170M Test probe P100-B can be customized for other specifications one. Commissioning of CNC machine tool machining center The purpose of CNC machine tool debugging is to check whether the machine tool installation is stable, and whether the transmission, operation, control and other systems are normal and sensitive. Try to run the test as follows: ◆ Add a lubrication point according to the requirements of the manual, fill the hydraulic oil tank with...
Single chip microcomputer STM32L151CCU6 The machining center is an advanced processing equipment with high degree of automation, complex structure and high price, which plays a huge role in modern industrial production. In order to give full play to the effect of adding the T center, it is particularly important to do the daily maintenance and maintenance of the CNC machine tool and reduce the failure rate of the machining center. Routine maintenance and maintenance of the machining center The...
[China Glass Network] Nowadays, many glass processing enterprises have applied CNC machining. First, they are drawn by CAD according to the glass size to be processed. Since the position of the glass must be the same when drawing and the drawing, the bottom left corner of the glass must be set as the origin. After drawing the picture, the software will be converted into a processable program by special software. Compared with metal processing, glass processing is much simpler and has no...
As we all know, the gear is the most basic mechanical transmission component, and the volume is large. The gear machine tool is one of the products with the highest technical content, the largest number of parts and the most complicated structure in the machine tool industry. However, China's gear machine tool industry was in a very embarrassing situation. In the past, China's machine tool manufacturers were relatively backward in technology, generally lacking independent innovation capability...
Abstract Bailu Abrasives Co., Ltd. grinding wheel vertical CNC machining machine procurement project [tender document number: Bai Ge Zhao (material) 20150006] issued a tender notice on the website on June 26, 2015, July 7, 2015 Open bidding, bid evaluation work... White Dove Abrasives Co., Ltd. grinding wheel vertical CNC machining machine procurement project [tender document number: white dove (object) 20150006] issued a tender notice on the website on June 26, 2015, carried out on July 7,...
The accuracy error of CNC milling and machining center is caused by external conditions and is greatly affected by external conditions. It can be divided into: the positioning accuracy error affected by the load of the tooling, the geometric accuracy error caused by the internal stress, and the shape error caused by the thermal deformation. The accuracy error of CNC milling and machining center is caused by external conditions and is greatly affected by external conditions. It can be divided...
1. Fault phenomenon 1 - Spindle heating (1) The pre-tightening force of the spindle bearing is too large, causing excessive friction when the spindle rotates, causing the spindle temperature to rise sharply. It can be eliminated by re-adjusting the spindle bearing preload. Analysis and elimination of common faults of small CNC milling machine spindles - SIerpu CNC machine tools 1. Fault phenomenon 1 - spindle heating (1) The pre-tightening force of the spindle bearing is too large, causing the...
In this technical exchange, we selected some of the works that won the prize in the “Second SINUMERIK Numerical Control Application and Transformation Awards Essay”. They are the first prize “Selecting SIEMENS840D CNC System to Transform CNC Gantry Machining Center”, II The award "SINUMERIK802D numerical control system in the transformation of SKIQ16CNB CNC vertical turning center", "Application of SIEMENS840D system in the transformation of NAXOS large-scale grinding machine", "Application of...
System parameters change or modification, mechanical failure, machine tool electrical parameters are not optimized motor operation abnormality, machine position loop abnormality or control logic is not appropriate, is a common cause of abnormal machining accuracy of CNC machine tools in production, find relevant fault points and process The machine can be restored to normal. In production, it is often encountered that the machining accuracy of CNC machine tools is abnormal. Such faults are...
2. Reasonable structural layout can increase stiffness Take the horizontal boring machine or horizontal machining center as an example for analysis. In the layouts of Figure 7-4, (a), (b), (c) The headstock of the three schemes is suspended on the side of the column on one side. The weight of the headstock will cause bending deformation of the column; the cutting force will cause bending and torsional deformation of the column. These deformations will affect the machining accuracy. The center...
The rigidity of the machine tool refers to the ability to resist deformation under the action of cutting force and other forces. CNC machine tools have higher static stiffness and dynamic stiffness than ordinary machine tools. There is a standard that the stiffness coefficient of CNC machine tools should be 50% higher than similar ordinary machine tools. In the process of cutting, the machine tool has to bear various external forces. The static force that it bears has the weight of the moving...
After the improvement, a large pad is added under the original fixture, and the large pad is integrated with the pad, the cylindrical positioning pin and the chamfered positioning pin in the original fixture. In order to ensure the accuracy, the machining center is used for careful processing. The key guarantees two points: 1 large pad edge and parallel to the center line of the two cylinders, the parallelism error is not more than 0.015mm. In this way, when the fixture is being corrected, it...
Sixth, ED-NC-32 EDM machine tool Fault phenomenon; C-axis often runs at high speed, no alarm signal; there is no alarm signal when starting from C-axis high speed. According to the analysis of the fault phenomenon that the C-axis speed is close to the maximum speed at the time of stall, the following three aspects are first considered: (1) speed command (VCMD) abnormality; (2) speed feedback loop abnormal; (3) servo amplifier abnormality. Use the HP54602 digital memory oscilloscope to observe...
Third, DK7725E CNC wire cutting machine Symptom: The pulse power supply output is faulty. The machine tool generates a corresponding pulse width and interval by the multi-vibrator, and is inverted and amplified by the transistor V1. When the control machine sends a pulse power signal, the relay K2 is sucked, and the pulse waveform signal is transmitted to the power amplifier circuit through the emitter output device V2. For machine tool discharge machining. S1 is the debugging switch. When the...
First, Sanguang brand CNC wire cutting machine Fault phenomenon: Stepper motor is out of step. The working principle of the stepper motor is shown in Figure 1. S1 is a feed switch that uses a normally closed contact. The PA of NAND input 2 is the stepper motor control signal from the computer. When the feed switch is turned off, or the control signal PA is at a low level (0.8 V or less), the output of the NAND gate is at a high level, and the input terminal of the photocoupler V1 does not have...
CNC machine tools are the key equipment of modern manufacturing. The output and technical level of a national CNC machine tool represent the manufacturing level and competitiveness of the country to some extent. So far, the technical level, performance and quality of CNC machine tools in China are still far from those in foreign countries. Simple CNC lathes with low technical content still dominate. High-end CNC machine tools and functional components mostly rely on imports. Therefore, although...
First, the cause of abnormal processing accuracy The cause of abnormal machining accuracy is concealed and the diagnosis is difficult. Based on years of practical experience, the author summarizes five main reasons: the machine feed unit is changed or changed; the zero offset of the machine axes is abnormal; the axial back gap is abnormal; the motor running state is abnormal, that is, the electrical and control parts are abnormal. Mechanical failures such as lead screws, bearings, couplings and...
Yu Jianxun, deputy general manager of Shaanxi Hanjiang Machine Tool Co., Ltd. Shaanxi Hanjiang Machine Tool Co., Ltd. is a leading manufacturer of precision thread grinders invested by the state in 1969. It is a large-scale backbone enterprise of machinery industry. It mainly produces precision thread grinder series, worm grinder, special special machine, precision measuring instrument, high precision CNC precision machine tool and rolling function. Parts and other products. Hanjiang Machine...
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