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

For the mechanical industry, the substance they come into contact with most often is a series of parts and components. No matter which style or type, they are more or less familiar and know it. Which parts are used in which structure or which application position, the staff of the relevant industry knows it by heart. However, no matter which configuration is used, it needs to go through certain processing steps before it can be implemented in a specific mechanical device. Therefore, professionals call this step precision parts machining. There are many ways to process precision parts, such as heat treatment methods. A part, a single non-detachable part of a machine, is a basic component of a machine and a basic unit in the mechanical manufacturing process. Its manufacturing process generally does not require assembly processes. Such as bushings, shingles, nuts, crankshafts, blades, gears, cams, connecting rod body, connecting rod head, etc.   A, precision parts cutting processing. There are mainly precision turning, mirror grinding and grinding, etc. In the precision lathe with fine grinding single crystal diamond turning tool to hold micro-turning, cutting thickness of only about 1 micron, commonly used in the processing of non-ferrous metal materials such as spherical, aspheric and flat reflective mirrors and other high-precision, highly polished appearance of the parts.   Second, precision parts processing. Precision parts processing accuracy to nanometers, and even finally to the atomic unit (atomic lattice distance of 0.1 to 0.2 nanometers) as the goal, ultra-precision parts cutting and processing methods can no longer adapt, it is necessary to resort to special precision parts processing methods, that is, the application of chemical energy, electrochemical energy, heat or electricity, etc., so that these energies beyond the joint energy between atoms, so as to remove part of the workpiece appearance of inter-atomic adhesion, The method of ultra-precision machining is achieved by applying chemical, electrochemical, thermal or electrical energy, etc., so that these energies exceed the inter-atomic union energy, thus removing part of the inter-atomic adhesion, union or lattice deformation of the workpiece exterior. This type of processing includes mechanical chemical polishing, ion sputtering and ion implantation, electron beam exposure, laser beam processing, metal vapor deposition and molecular beam epitaxy, etc.

CNC machining core does not spill the phenomenon of key components not assembled well, we used to be in the application of CNC machine tools machine tools in addition to pick some stronger cnc machining manufacturer in order to better be able to better quality assurance, but also must let the technical assembling staff to undertake assembling, and thus be better able to ensure its smooth operation. The customer also has to check whether the pipeline is blocked, if it is the word to apply the cleaner to blow the drain. The water storage tank is relatively low. CNC machining core often does not sprinkle water is due to the gas inside the centrifugal water pump, the gas discharged from the pump can guarantee that it can all normal sprinkle water; compared with other difficulties, this problem is very easy to deal with relativity.   CNC high precision parts CNC lathe processing, usually is to increase the cohesion of the hazards, with CNC lathe three jaws or four jaws chuck twist tight parts, and subsequently terminate the mechanical parts processing. At the same time to make the clamping force above the mechanical equipment cutting speed to ensure that the parts do not loosen and reduce the nominal diameter force... The clamping force expands with the increase in cutting speed, and then decreases. cnc machining manufacturer this type of work ability to make mechanical parts in the processing of the whole process smooth. Unbeknownst to us, after the three-jaw or four-jaw chuck release, the machined parts will have a large difference from the original, some occur irregular graphics, some occur elliptical type, mainly showing a relatively large error.

The common types of wear and tear of precision parts machining mainly include running wear, hard grain wear, surface fatigue wear, thermal wear, phase change wear and hydrodynamic wear.   Run-in wear is the wear of machinery under normal load, speed and lubrication conditions, this wear is generally slow to develop, the short-term impact on the quality of processing is not significant. Hard particle wear is due to the parts themselves dropped abrasive particles or hard particles from the outside into the machine tool, mixed into the processing area, subject to mechanical cutting or grinding, causing damage to the parts, which is more serious impact on the quality of processing   Precision parts processing plant surface fatigue wear is machinery under the action of alternating load, resulting in tiny cracks or class point-like craters, thus causing damage to the parts. This type of wear is usually closely related to the pressure size, load characteristics, machine parts materials, size and other factors.   Heat-like wear is parts in the friction process generated by the heat on the parts, so that the parts have tempering softening, scorching creasing and other phenomena. This type of wear usually occurs in the high-speed and high-pressure sliding friction, wear is more destructive, and accompanied by the nature of accidental wear. Corrosion wear is a chemical effect, that is, chemical corrosion caused by wear. When the parts surface and acid, alkali, salt liquid or harmful gas contact, it will be chemical erosion, or parts surface and oxygen combined to generate easy to fall off the hard and brittle metal oxides and make parts wear.   Phase change wear is parts of long-term work at high temperatures, parts of the surface metal tissue grain heat becomes large, the grain boundary around the oxidation, resulting in small gaps, so that parts fragile, wear resistance decreased, resulting in parts wear.

1, non-standard precision parts processing factor is the poor machining accuracy of the parts themselves. Generally speaking, if the dynamic error between the shafts is not adjusted during installation, or if the shaft drive chain changes due to wear, it will affect the precision of the parts. Generally, the accuracy check caused by this error can be solved by readjusting the compensation amount. If the error is too large or even an alarm occurs, the servo motor needs to be checked to see if its speed is too high. 2, the factor is the amount of overshoot in the operation of the machine tool will also affect the machining accuracy. It may be that the acceleration and deceleration time is too short. Properly extend the replacement time. Of course, it is also likely that the link between the screw and servo motor is loose.... 3, the factor is that the two-axis linkage generated by the roundness of the overshoot, improper adjustment of the machine, the formation of circular axial deformation, axis screw gap compensation is not correct or axis positioning offset, may affect the precision of precision parts. Produce impact.

Touch the ultra-precision machining center basin friends should understand, cnc machining plant in CNC machining the whole process is very easy to produce oil leaks. In fact, it is very easy to see the part of CNC machining management center oil leakage. Mainly because of spare parts or machining center cylinder oil leakage caused by. If it is spare parts, maintenance is relatively simple. If it is a cylinder, it is very inconvenient and may cause damage to the equipment. Oil changes that do not meet the regulations usually also cause CNC machining oil leaks. Oil change in the occurrence of the problem is specifically expressed in three levels.   First, for low-viscosity grease parts, oil change casually replaced with high-viscosity grease, it will make the corresponding shell, hole shaft and other sealing characteristics suffer certain hazards, there is also a high probability of significantly reducing the tightness of such parts.   Second, precision CNC lathe machining parts do not clean the car oil tank when changing oil, the waste in the car oil tank will have a high probability of entering the lubrication system, blocking the oil channel and damaging the hydraulic seals leading to oil leakage.   Third, CNC machining oil change when the oil is too much, especially in the parts with rotating parts, because of the stirring effect of rotating parts, more very easy to occur oil leakage conditions. The adoption and adjustment of the lubrication system parts unreasonable and cause CNC machining oil leakage, such as CNC machining maintenance personnel overhauled using a gasoline pump with too high working pressure or too much oil, or adjust the system software working pressure, speed control valve, valve, regulator and other working pressure adjustment is too high, the total flow of CNC lathe lubrication system is too large, etc. and pumping oil system software and its sealing system software does not match If the oil leakage is too high, it will lead to oil leakage.

General CNC machining usually refers to computer digital control of precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. Shenzhen cnc machining when the workpiece overcut cause how to improve? Cause.   Play knife, tool strength is not long enough or too small, resulting in tool play.   Improper operation by the operator.   Cutting allowance is not uniform. (e.g. leave 0.5 on the side of the surface and 0.15 on the bottom)   Improper cutting parameters. (e.g., tolerance too large, SF set too fast, etc.) Improvement.   Use knife principle: can be large, not small, can be short, not long.   Add corner cleaning procedures, and leave an even margin as much as possible. (Side and bottom margin left the same)   Reasonable adjustment of cutting parameters, the margin of large corners rounding.   Using the machine SF function, the operator fine-tune the speed so that the machine cutting to achieve the best results.

Basin friends who have touched the ultra-precision machining center should understand that it is very easy to produce oil leaks during the whole process of large cnc machining. In fact, it is very easy to see the part of CNC machining management center oil leakage. Mainly because of spare parts or machining center cylinder oil leakage caused by. If it is spare parts, maintenance is relatively simple. If it is the cylinder, it is very inconvenient and may cause equipment damage. Oil changes that do not meet the regulations usually also cause CNC machining oil leaks. Oil change in the occurrence of the problem is specifically expressed in three levels.   First, for low-viscosity grease parts, oil change casually replaced with high-viscosity grease, it will make the corresponding shell, hole shaft and other sealing characteristics suffer certain hazards, there is also a high probability of significantly reducing the tightness of such parts.   Second, precision CNC lathe machining parts do not clean the car oil tank when changing oil, the waste in the car oil tank will have a high probability of entering the lubrication system, blocking the oil channel and damaging the hydraulic seals leading to oil leakage.   Third, CNC machining oil change when the oil is too much, especially in the parts with rotating parts, because of the stirring effect of rotating parts, more very easy to occur oil leakage conditions. The adoption and adjustment of the lubrication system parts unreasonable and cause CNC machining oil leakage, such as CNC machining maintenance personnel overhauled using a gasoline pump with too high working pressure or too much oil, or adjust the system software working pressure, speed control valve, valve, regulator and other working pressure adjustment is too high, the total flow of CNC lathe lubrication system is too large, etc. and pumping oil system software and its sealing system software does not match In fact, it will lead to oil leakage.   In fact, the cause of oil leakage in CNC machining is not only the above aspects, if we encounter similar problems in the process of operating the lathe CNC machining must be carefully checked, immediately find out the cause of oil leakage in CNC machining to prevent excess damage.

1.Precision parts processing requirements for process personnel: an experienced process personnel can develop scientific, precise, efficient process flow, process flow is the guiding norms of Foshan precision parts processing, but also the basis for CNC programming. Process is not good, the whole factory 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 operation of equipment tools, 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 selection 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.

Shenzhen cnc machining center carried out so far, the total output value gradually increased, the domestic machine tool industry is also becoming more and more prosperous. The appearance design of most machining centers on the market, slicing conveyor can be adjusted to the back of the production line, suitable for customizing the arrangement of the production line, is also one of the reasons why customers love it. The machine uses high-torque motor, the output of the motor can fully reflect the spindle characteristics, indexing disc high efficiency, high precision, including 8 oil joints, a pneumatic confirmation of tight, high activity, can deploy oil pressure jig use.   Large CNC machining center spindle for vertical machining center, the structure of the form of fixed column, the table is rectangular, no indexing rotary function, suitable for processing disc, set, plate parts, with three linear motion coordinate axis, and it can be installed on the table a rotary turntable along the horizontal axis, the processing of spiral parts. The machine is replaced by pneumatic method, which is convenient and handy. The machine uses automatic lubrication to ensure the outstanding operation of all parts of the machine. The structure of the machine is in the form of a horizontal trailing plate, with a reasonable layout. The three axes of feed use precision ball screw and servo motor connection drive, improve the transmission accuracy. Machine X and Y-axis guide selection of precision tumbling linear guide, high feed sensitivity; Z-axis using rectangular hardened cast iron - plastic sliding guide vice, with outstanding oscillation absorption; machine control system selection of AC servo system, suitable for the processing of messy parts, especially the processing of messy mold.   Machine spindle with servo spindle motor, spindle box with counterweight equipment, to ensure the smooth operation of the Z axis. As we all know, shenzhen cnc machining center spindle speed is generally high, but as the spindle speed continues to increase, especially to reach fast, all kinds of random oscillations, followed by an increase in the instability of the rotary axis, when beyond the fatigue strength of the spindle eventually lead to a reversible increase in spindle rotation error, and ultimately affect the machining accuracy of the machine tool. So the selection of spindle speed is very important.

Although the precision parts processing factory has a strict quality control system in the production process, there will also be quality personnel for product testing before shipment, due to the large number of products, many processes, coupled with problems in the transportation process, the product will also have a defective product. In the face of customer complaints about defective products, how should we deal with them? 1、Tracing the source of the problem and proposing solutions   First of all, product quality problems, must stand to have the customer first perspective, as soon as possible to provide solutions, and assume the relevant responsibility. According to the situation of product quality problems, targeted treatment, in this process, precision parts processing manufacturers to have a sense of responsibility, encounter problems to solve the problem, rather than shirking responsibility. Identify the reasons for the quality problems, feedback to the production line to avoid the recurrence of similar mistakes, so that the quality of the enterprise's precision CNC machining products become better.   2、Product rework   If the product quality problems are relatively light, such as precision parts larger than the size of the tolerance, surface wear, on some issues can be recalled to the product, back to the factory line rework processing can be qualified to leave the factory. During this period, the transportation costs, product processing costs are borne by the manufacturer. 3、Product scrapping   If the high precision five-axis parts processing serious quality problems, such as parts bit micro deviation, material selection errors, etc., must be scrapped products, not for secondary processing. CNC processing manufacturers must re-produce new products, and bear all the costs incurred in the process, if the delay in the use of customer installation, must bear the corresponding compensation.