Stand Dragon Industrial Co., Ltd.
First, the general rules of the knife: Open rough: Under the maximum load of the machine tool, in most cases, the largest possible knife should be used, and the maximum amount of feed should be fed as fast as possible. In the case of the same knife, the feed is inversely proportional to the amount of feed. Under normal circumstances, the load of the machine tool is not a problem. The principle of selecting the knife is mainly considered according to whether the two-dimensional angle of the...
First, the proposed tool compensation: With the end mill machining the workpiece on the CNC machine, it can be clearly seen that the tool center motion gauge does not coincide with the workpiece contour because the workpiece contour is formed by the end mill motion envelope. The center of the end mill is called the tool point of the tool (the 4th and 5th coordinate CNC machine is called the tool position vector), and the motion track of the tool point represents the movement track of the tool....
Foreword Mold is an important process for the replacement of products (such as automobiles, motorcycles, home appliances, etc.). The quality and cycle of manufacturing directly affect the quality and time-to-market of new products. Therefore, the development and development of molds has become an important part of the development of new products. Mold mold companies that need to develop new products for high quality, short cycle and low cost have adopted advanced manufacturing technologies such...
CNC machining of equipment and anti-corrosion screw bushings Xu Guibin Wang Zhengfang Du Shaoguang Xue Zhaojun Sun Tingbo (Qilu Petrochemical Company Machinery Factory, Zibo, Shandong, 255400) In the localization of imported equipment parts, a new kind of new technology is proposed. Ideas can be provided for CNC machining and NC programming of complex parts. The double-headed acceleration screw bushing is an important part on the extrusion rod of a plastics granulator. The original is imported...
Due to the relatively concentrated, high-efficiency, high-flexibility, high precision and good consistency of CNC machine tools, one-time clamping can complete milling, drilling, boring, comparison, tapping and other processes. The same processing method carried out in one setup is defined as a generalized process, then the creation and design of the CNC machining process is different from the design of the ordinary machine sheet processing technology, and the group technology (GroupTechnolgy)...
In CNC machining, the detection of tool status is of great importance, as tool damage not only affects the quality and efficiency of the process, but can also lead to serious machine and personal accidents. The damage of the tool is caused by wear and damage. The wear is the phenomenon of the surface material consumed by the contact and friction between the tool and the workpiece during the machining process; and the damage is caused by chipping, breaking, plastic deformation, etc. Loss of...
Abstract: The proportion of free-form surfaces in automotive molds has been increasing and the quality requirements of products have been continuously improved. Both of them have put forward higher requirements on the manufacturing precision of curved surfaces. Through the summary of the experience of CNC machining of molds, the related factors affecting the quality of CNC machining are analyzed. From the aspects of machine tools, tool holders, tools, machining processes, software and cutting...
Fault diagnosis and elimination for the operator The impression of the CNC equipment is that it is difficult to maintain and difficult to diagnose and eliminate. As a CNC cutting machine for operators, it must be done in maintenance and troubleshooting, so that the general operator can easily do it. It is not difficult to do this. As long as it is paid attention to during design, modular design is adopted, and each module is equipped with a fault indication. The system is equipped with a...
With the development of the wood industry, high-power high-speed electric spindles have put forward higher requirements for machine tool production efficiency. The high-speed electric spindles used in CNC machining centers are developing with high power and high speed. Power 7 ~ 10KW, speed 18000 ~ 24000rpm, and some even higher, effectively shorten the processing cycle of the workpiece. The machining of the complex shape of the workpiece with five-coordinate linkage facilitates the development...
In the machining of numerical control system, under the traditional method, the control process is a sequential process, and the links are mutually restricted, so it is difficult to achieve rapid response of errors. The closed-loop control method based on the interpolation buffer utilizes the modern advanced multi-task parallel processing technology, and adopts the front-back control model to improve the closed-loop response speed. The basic principle is to establish a high-speed interpolation...
In the dual PC numerical control system, the CNC machining program is programmed according to the machined parts, and the user can modify it at any time. The main task of this module is to compile the NC machining program and calculate the tool radius compensation at the same time. In this way, it can be converted into a corresponding action of the numerical control actuator, and finally a qualified product is processed. CNC machining programs are generally in the form of source code, that is,...
The traditional thread processing methods are mainly: the external thread is turned with a thread turning tool, and the thread profile can be cut out by multiple passes while working, and the production efficiency is low; the internal thread adopts tap tapping, and the thread bottom must be put into operation. The hole is machined and then the tool is changed for processing. The auxiliary time is long. With the development of numerical control technology, the machining methods of CNC milling...
SUMMARY CNC machining generally rectilinear profile parts, arcs, there are some non-circular curved profile, such as high-order curve, curve list, a list of other surfaces, but can be used to approximate a straight line or arc, when the press slide way When the data of each straight line and circular arc segment is programmed into the NC machining program, and the CNC system is input and started, the CNC system performs input processing, interpolation calculation and output processing, and...
If the CNC system does not require processing result reproduction and error diagnosis, the PC is often idle during processing, which is a waste of computing resources, while the microprocessor has to perform a large number of complex operations, and measures can be taken at this time. Let the PC take on some calculation work, reduce the burden on the microprocessor and improve the processing efficiency. When surface machining is usually performed, the surface is decomposed into curves, and the...
After introducing the CNC machining system into the manual production process in the past, the entire processing plant has embarked on a lean manufacturing path and now has a continuous flow production line. Clippard Instrument Laboratories, Inc. is similar to an intermittently-produced processing plant. From the point of view of the nature of its parts production, the varieties are very mixed and the production volume is also low. A total of 5,000 standard parts are included in the company's...
Abstract: The machining program is in an extremely important position in the operation of CNC machine tools. The article proposes to evaluate the machining program from aspects such as parts processing quality, programming and running costs, production efficiency, etc., and proposes the CAM for the status of CAM post-processing functions. The preparation of the machining program is optimized. Keywords: CNC machine tool; machining program; evaluation; optimization 1 Introduction The CNC machine...
CNC machining has become more and more widely used in today's machinery manufacturing and processing industry. In particular, economical CNC machine tools are widely used in some enterprises, especially small and medium-sized enterprises, due to their wide range of processing, high efficiency, stable quality, and low prices. The application and development. However, in popularization and application, problems such as long preparation time, large processing errors, accidents or the like are...
First, the proposed tool compensation: With the end mill machining the workpiece on the CNC machine, it can be clearly seen that the tool center motion gauge does not coincide with the workpiece contour because the workpiece contour is formed by the end mill motion envelope. The center of the end mill is called the tool point of the tool (the 4th and 5th coordinate CNC machine is called the tool position vector), and the motion track of the tool point represents the movement track of the tool....
Application and development of mechanical probes Mechanical probes are generally 6mm steel balls. They are spring-loaded on the measuring rod. When the workpiece is hit, it can be retracted and the circuit is turned on to emit light signals. The coordinate position of the measured surface can be obtained by the indication of the photoelectric probe and the machine coordinate position. It is necessary to record the coordinate value of each measurement, and then manually calculate it. Finally,...
The double-headed acceleration screw bushing is an important part on the extrusion rod of a plastics granulator. The original is imported from abroad. In order to meet the needs of localization of imported equipment, the machine has mapped the part. The specific shape of the spiral bushing is represented by two spiral lines on the cylindrical surface, and the pitch thereof is accelerated with the distance from the right end of the spiral, and each spiral is composed of five segments of the form...
Due to its non-expandable nature, the cam profile can only be processed by two rotating coordinates and cannot be converted into Cartesian coordinates. Whether machining camber cams on special CNC machines or general multi-axis CNC machines, the two rotating shafts should not only meet the movement requirements of the meshing drive, but also ensure that the center distance is constant for a specific machine tool. The range of the center distance parameter of the machining cam is generally...
Thermal error prediction compensation for numerical control machining based on neural network. The thermal error compensation principle and the structure sensor measure the temperature and thermal displacement values of the corresponding parts of the CNC machine tool, and then input them into the neural network prediction model through the time delay link TDL for one-step prediction of the thermal error, and perform the prediction value according to the current measurement result. Correction,...
First, the tool compensation proposed: Using an end mill to machine a workpiece on a CNC machine tool, it can be clearly seen that the tool center movement gauge does not coincide with the contour of the workpiece. This is because the workpiece contour is formed by the movement envelope of the end mill. The center of the end mill is called the cutter location (4, 5 coordinate CNC machine tool is called cutter location vector), and the movement track of the cutter location represents the tool's...
Foreword Mold is an important process for the replacement of products (such as automobiles, motorcycles, home appliances, etc.). The quality and cycle of manufacturing directly affect the quality and time-to-market of new products. Therefore, the development and development of molds has become an important part of the development of new products. Mold mold companies that need to develop new products for high quality, short cycle and low cost have adopted advanced manufacturing technologies such...
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