China Shenzhen Perfect Precision Product Co., Ltd. company news

How to set the home point of cnc four-axis machining center? If the operation alone, there is no difficulty, and the three-axis is no different, the program to add an A-axis rotation axis, four-axis machining is simple is the rotation of the angle of the workpiece, and then processing, which can save the number of clamping. Complex is XYZ4, four-axis linkage, can be processed more complex workpiece, such as impeller, which requires software to program a certain degree of difficulty Four-axis machining center machining origin how to set the, directly select back to the origin, and then press and hold a + do not release, until the screen a value becomes zero.   Four-axis at 0 degrees, find out the center of the x, y axis (four-axis clamping a round bar), and then four-axis rotation of 90 degrees, with a table or standard bar, so that the spindle and the end of the coincidence, then the original set the origin to four-axis 90 degrees from the end of the round bar distance is the rotation radius. General X to the single-sided benchmark more, Y to the single-sided also have sub-center, Z to the 4th axis as long as the clamping a round bar with a percentage table to measure the height of the table surface and the center of the bar can be measured, the measured height difference first complementary to the coordinate system, so that the tool can be directly on the table surface to the tool.

How to make cnc machined hand board model? The hand board production methods are hand-made hand board and CNC hand board. In the early days, there is no corresponding equipment, CNC technology is backward, hand board production mainly by hand to complete, materials, technology have great limitations. There are very few pure hand-made hand board anymore. CNC hand board precision is higher, the degree of automation is high, the hand board can reflect the effect of mass production products, later supplemented by the details of the part of the manual polishing process, so most of the current hand board production is the use of CNC processing methods (1) Inspection Appearance design   The hand board is not only visual, but also touchable, it can reflect the designer's creativity in the form of a physical object, avoiding the disadvantage of "drawing looks good but not making it look good". Therefore, the production of hand board in the development of new products, product shape is essential in the process of deduction.   (2) Inspection Structural design   Because the board is assembled, so it can visually reflect the structure of the reasonable or not, the ease of installation. Facilitate early detection of problems and solve them. (3) Avoid the risk of directly opening the mold   As the cost of mold manufacturing is generally very high, the relatively large mold is worth hundreds of thousands or even millions, if in the process of opening the mold found unreasonable structure or other problems, the loss can be imagined. The hand board production can avoid this loss and reduce the risk of mold opening.   (4) Make the product launch time much earlier   Because of the advance of the hand board production, you can use the hand board before the mold development for product promotion, and even the preliminary sales, production preparation work, early occupation of the market.

Measures and methods to prevent thermal deformation of CNC lathe processing? The thermal characteristics of CNC lathe is one of the important factors affecting the processing accuracy, so the measures to reduce the influence of thermal deformation of CNC lathe should be paid special attention. The common measures for thermal deformation of CNC lathe are as follows. 1, improve the layout and structure design of CNC lathe: such as the use of heat symmetry structure for heat sources that are more symmetrical; CNC lathe using the use of inclined bed, flat bed and inclined slide structure; certain heavy-duty CNC machine tools due to structural constraints using thermal balance measures.   2, control temperature rise: the CNC lathe heat part (such as spindle box, hydrostatic guide hydraulic oil, etc.) to take heat dissipation, air cooling and liquid cooling to control the temperature rise to absorb the heat emitted by the heat source, is a countermeasure to reduce the impact of thermal deformation used more in various types of CNC machine tools. 3, the cutting parts to take strong cooling measures: in large cutting volume cutting, falling on the table, bed and other components of the hot chip volume an important source of heat. Modern CNC machine tools, especially milling with machining centers and CNC lathes commonly use multiple nozzles, high flow coolant to cool and exclude these hot chips, and coolant with high-capacity circulation heat dissipation or cooling with cooling devices to control the temperature rise.   4, thermal displacement compensation: predict the law of thermal deformation, the establishment of mathematical models stored in the computer for real-time compensation.

CNC lathe processing tool holder offside overshoot or turn not in place reason analysis? CNC tool holder is one of the most common auxiliary devices of CNC lathe, which enables CNC lathe to complete many or even all machining processes in one clamping of the workpiece, so as to shorten the auxiliary time of machining and reduce the error caused by installing the workpiece several times during the machining process, thus improving the machining efficiency and machining accuracy of the machine tool. As follows. 1, the tool holder offside over-shoot.   The mechanical cause of this failure is more likely, mainly because the back of the device does not work.   First of all, check whether the positioning pin is flexible and whether the spring is fatigue. At this time, the positioning pin should be repaired to make it flexible or replace the spring.   Secondly, check whether the ratchet wheel is disconnected from the worm gear, and if it is disconnected, the coupling pin should be replaced. If the phenomenon of overshoot still occurs, it may be due to the tool is too long and heavy, should replace the positioning pin spring with a slightly larger modulus of elasticity. 2, the tool holder operation is not in place (sometimes the midway position suddenly stay).   This fault is mainly due to the misalignment of the contact of the sending disk and the contact of the elastic sheet, that is, the knife position signal mylar disk position fixed offset.   First of all, re-adjust the position of the sending disk and elastic sheet contacts and fixed firmly.   If the fault still can not be eliminated, it is possible that the sending signal disc clamping nut is loose, causing the position to move.

CNC lathe processing is a high-precision, high-efficiency automated machine tools with digital information to control the parts and tool displacement of mechanical processing methods. It is an effective way to solve the problems of variable varieties, small batches, complex shapes and high precision of aerospace product parts and realize efficient and automated machining. What are the components of CNC lathe machining technology system? (1) CNC machine tools   The choice of CNC technology, or equipped with a CNC system of machine tools, known as CNC machine tools. It is a kind of technology-intensive and automation are relatively high degree of mechatronics processing equipment. CNC machine tools are the main body to complete the CNC processing.   (2) fixture   In the production of machinery, used to clamp the workpiece (and guide the tool) equipment collectively referred to as fixtures. In the machinery production plant, the use of fixtures is very extensive, from the blank production to the installation of goods and inspection of the various production links, there are many different varieties of fixtures. Fixture is to complete the hub of CNC machining. (3) tool   Metal cutting tools is an important thing in modern machining. Whether it is a general machine tool or CNC machine tools must rely on the tool to complete the cutting operation. Tool is to complete the bridge of CNC machining.   (4) workpiece   Workpiece is the target of CNC machining.

What is the scope of application of CNC lathe parts processing lathe parts? As the name implies, lathe parts are the products processed by lathe. Lathe parts can be divided into many kinds according to the different types of lathes, the most common ones are automatic lathe parts, CNC lathe parts, instrumentation lathe parts, etc.. The hardware materials used for lathe parts are copper, iron, aluminum, stainless steel and so on. The more common processing areas are Shenzhen and Dongguan and the surrounding areas. The lathe parts are widely applicable, involving electronic and electrical appliances, hardware tools, toys, plastics and other industries. Compared with other solid parts, its main feature is precision, tolerance can reach plus or minus 0.01MM, or even more accurate. Of course, its price is also relatively much higher than other solid parts.   Automatic lathe parts are parts processed by automatic lathe, the maximum processing diameter is 20mm, the maximum processing length is 90mm, due to the small processing parts, high rate, so the price is relatively low, the processing out of high precision, tolerance can be controlled within plus or minus 0.01mm. CNC lathe parts are parts with CNC lathe processing, the maximum processing diameter can reach 60, the maximum processing length is 300mm, processing parts are large, complex shape, high precision, can be divided into several times to eat knife turning, tolerance can reach plus or minus 0.002mm, for processing stainless steel products are more advantageous, due to the expensive machine, low processing efficiency, so the processing cost is relatively high.   The reason why lathe parts are more expensive than other hardware parts processing cost is because the processing process of turning is determined by high precision, low rate and low output. A large part of the lathe parts after processing on the machine, need secondary processing to meet the functional requirements, such as: milling groove, drilling, milling edge, chamfering, etc..

cnc machining factory CNC machining the thickness of the metal layer removed in each process is called the inter-process machining margin. For the external circle and holes and other torsion outside, machining allowance is from the diameter of the discretion, so called the symmetric allowance (i.e. bilateral allowance), that is, the reality of the thickness of the metal layer removed is half of the machining allowance on the diameter. The machining allowance of the plane is the unilateral allowance, which is the thickness of the metal layer removed in reality. The goal of leaving machining allowance on the workpiece is to remove the machining deviation and outside shortcomings left by the previous process, such as cold hard layer outside the casting, porosity, sand trap layer, forging outside the oxide skin, decarburization layer, outside cracks, internal stress layer and outside roughness after cutting processing. So as to improve the accuracy of the workpiece and the roughness of the outside. The size of the machining allowance has a large impact on the processing quality and production efficiency.   Machining allowance is too large, not only increases the amount of machining labor, reducing productivity, and increase the material, object and power consumption, CNC machining to improve the cost of processing. If the machining allowance is too small, it is not as good as the various shortcomings and deviations of the previous process, but also not as good as the compensation of the process processing clamping deviations, the formation of scrap. The selection criteria is to ensure the quality of the premise of CNC processing, so that the margin as small as possible. Generally speaking, the more finish machining, the smaller the process margin. To determine the CNC machining sequence, but also to clarify whether the parts to be processed before the pre-processing. Pre-machining is often done by ordinary machine tools. If the blank accuracy is high, positioning is also more reliable, or processing allowance is sufficient and uniform, it can be pre-machining, and directly on the CNC machine tool processing. At this time, according to the rough benchmark accuracy of the blank to consider the division of CNC machine tool processes, can be a process or divided into several processes to complete.

Precision parts processing requirements for process personnel: an experienced process personnel can develop scientific, precise and efficient process flow, process flow is the guiding specification for precision parts processing, but also the basis for CNC programming. Process is not good, the whole plant is busy!   2. Requirements for equipment precision: the precision of the selected processing equipment itself, should meet the precision requirements of precision parts processing, processing equipment precision if not up to, there will be no way to process the precision parts to meet the requirements. 3. Requirements for the operator: the operator is directly engaged in the field operation of technical engineering personnel, the need to strictly implement the process, should have the most basic equipment tool operation, experience, hands-on ability. Can actually solve problems.   4. Requirements for gauge testing: the good or bad of the measuring equipment, directly affects the test results of precision parts. If the measurement equipment, there is no way to detect the required tolerance accuracy. Then it does not have, the evaluation of precision parts, more can not provide engineers with quality improvement direction and data.   5. The requirements of the material: material on the precision parts processing put forward very obvious differences in the requirements of different materials processing performance is different. Requirements for processing parameters also have different. We need to select the appropriate tool, revolution, feed, and various processing parameters according to the processing performance of the material. 6. Requirements for tolerance accuracy: the level of tolerance accuracy directly affects the machining process and the choice of processing equipment and processing parameters. This requires our process engineers and operators to have a quantitative precision grasp of tolerance accuracy. Only then can we process the precision parts that meet the requirements.   7. requirements of the environment: processing environment refers to, machine and equipment workshop environment, to meet the requirements of precision parts processing. At times, the floor vibration and noise or air cleanliness, too much dust. Temperature, humidity will affect the precision and stability of precision parts processing.

CNC lathe processing CNC lathe feed processing route refers to the turning tool from the point (or machine tool fixed origin) to start the movement, until the return to the point and end of the processing program after the path, including the path of cutting processing and tool cutting, cutting out and other non-cutting empty stroke path. The feed route for finishing is basically along the sequence of its part contour, so the focus of the work to determine the feed route is to determine the feed route for roughing and empty stroke.   In the CNC lathe machining, the determination of the machining route generally follows the following principles. ①It should be able to ensure the accuracy and surface roughness of the machined workpiece.   ②Make the machining route the shortest, reduce the empty travel time and improve the machining efficiency.   ③Simplify the workload of numerical calculation and simplify the machining procedure as much as possible.   ④For some reused programs, subroutines should be used.  

cnc machining factory CNC machining is developing in the direction of high efficiency and efficiency. This includes CNC machining speed control. In order to achieve maximum efficiency in the working stroke, the moving parts must accelerate to a high speed stroke in a short period of time and stop immediately in the middle of the high speed stroke. Therefore, it is necessary to control the machining speed of CNC machining center. Based on the open control idea, an automatic acceleration and deceleration control method for CNC machine tools based on arbitrary curves is proposed. The automatic acceleration and deceleration control technology is developed from the traditional fixed mode to a new flexible mode, which explores a new way to effectively improve the dynamic performance of CNC machine tools.   1. Flexible acceleration and deceleration control device.   CNC machining, generally by the system program directly to achieve a specific speed automatic control function. In this way, the acceleration and deceleration characteristics of the system can be changed, and the CNC program can also be modified by acceleration and deceleration control, so that ordinary users cannot make the CNC machine tool have the best acceleration and deceleration performance according to their own wishes. For this reason, we propose a flexible acceleration and deceleration control method based on the database principle, which divides acceleration and deceleration control into acceleration and deceleration description and execution, and separates them from the system program. The software is designed with a universal control channel independent of the acceleration and deceleration database, and is able to perform acceleration and deceleration calculation and trajectory control independently. 2. Automatic acceleration control system for flexible CNC machining.   Acceleration curves, analysis curves and non-analysis curves are created and stored as a table of values as templates in the acceleration and deceleration curve library.   3. Automatic deceleration control system for flexible CNC machining.   Acceleration control is stored as a numerical table in a library of acceleration and deceleration curves. Proper automatic acceleration and deceleration control is essential to ensure the dynamic performance of the CNC machine. Traditional automatic acceleration and deceleration control based on fixed curves is difficult to ensure that the acceleration and deceleration process is coordinated with the machine performance and to optimize the dynamic characteristics of the machine motion due to the lack of flexibility.