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

1. Single punching: punching is completed in a single time, including straight-line diffusion, arc diffusion, circumferential diffusion, and punching of grid holes. 2. Continuous blanking for the same purpose: the rectangular production model is used for partial overlapping processing, which can be used for processing long holes, trimming, etc. 3. Continuous blanking for the purpose of multi-target: the processing method of processing large holes with small production models. 4. Nibbling: using a small round die to continuously punch an arc with a small step distance. 5. Single forming: the processing method of one-time shallow deep drawing forming according to the shape of the production model. 6. Continuous forming: forming processing methods that are larger than the size of the production model, such as large-size louvers, rolling ribs, rolling steps and other processing methods. 7. Array forming: processing multiple identical or different workpieces on a large plate.

1. Before precision machining, check whether the moving part is filled with lubricating oil, then start and check whether the clutch and brake are normal, and idle the machine tool for 1-3 minutes. It is strictly prohibited to operate when there is a mechanical failure. 2. All employees shall check whether their clothes meet the work requirements before entering the work position and preparing for parts processing. Slippers, high heels and clothes that affect safety are not allowed. Those with long hair should wear safety helmets. Keep correct posture at work and have enough spirit to cope with work. If you find that you feel unwell, you should leave the job immediately and report to the leader. During the operation, the operator must concentrate, no chatting, and cooperate with each other. The operator must not operate under the state of irritability and fatigue, so as to avoid accidents and ensure the safety of operation. 3. Only after all other personnel leave the mechanical working area and take away the sundries on the workbench can the power be turned on to start the machinery for safe processing. 4. When off duty, the power supply should be turned off, and the finished products, leftover materials and sundries on the post should be sorted out to ensure the clean and safe working environment. 5. After the machine is started, it is transported and operated by one person. Other people are not allowed to press the electric building or step on the foot switch board, nor put their hands into the mechanical working area or touch the moving parts of the machine with their hands. When the machine is working, it is forbidden to stretch your hand into the slider working area, and it is forbidden to take and place the workpiece by hand. Standard tools must be used when taking and placing workpieces in the die. In case of abnormal sound or machine failure, turn off the power switch immediately for inspection. 6. When replacing the mold, first turn off the power supply, and then start to install and debug the mold after the movement Department of the punch stops running. After installation and adjustment, move the flywheel by hand for trial punching twice, and check whether the upper and lower molds are symmetrical and reasonable, whether the screws are firm, and whether the blank holder is in a reasonable position.

1. All the equipment in the factory is not tested by the diagnostic object, but depends on the production characteristics of the factory and the importance of the equipment itself. 2. Equipment state parameters are the carrier of equipment abnormality and fault information. Selecting the best measurement point and adopting appropriate detection methods are important conditions for obtaining effective fault information. The key to the normal operation of diagnosis is to truly and fully detect a sufficient number of state parameters that can objectively reflect the equipment situation 3. Therefore, the correct selection of measurement points is related to whether the fault can be diagnosed correctly. Once the measurement points are selected, they should be marked to determine the measurement points and direction. The principle is to comprehensively describe the vibration state of the equipment, and select the sensitive points of equipment vibration, the key points closest to the core of the equipment and the vulnerable points prone to deterioration as far as possible. 4. In addition, environmental factors should also be considered. Avoid selecting places with high temperature, high humidity, air outlets and sharp temperature changes as measurement points to ensure the accuracy of measurement data. The measurement points should be as close to the bearing area of the bearing as possible, and avoid multi-layer separation from the detected moving parts as far as possible, so as to reduce intermediate links and attenuation during the transmission of vibration signals. For low-frequency vibration, Radial horizontal and vertical directions must be measured at the same time, and axial measurement points should be added if possible. For high-frequency random vibration and impact vibration, only one direction can be determined as the measurement point.

According to the stainless steel parts processing factory, chloride ions exist widely, such as salt/sweat/seawater/sea breeze/soil and so on. In the presence of chloride ions, stainless steel corrodes rapidly, even more than ordinary low carbon steel. Therefore, there are requirements for the use environment of stainless steel, and it needs to be wiped frequently to remove dust and keep it clean and dry. (In this way, he can be rated as "improper use".) There is an example in the United States: a company used an oak container to hold a solution containing chloride ions. The container has been used for nearly a hundred years and was planned to be replaced in the 1990s. , because the oak material is not modern enough, the container leaked due to corrosion 16 days after the replacement with stainless steel The stainless steel parts maker says the titanium- and niobium-free material has a tendency to intergranular corrosion. The addition of titanium and niobium, together with stabilization treatment, can reduce intergranular corrosion. A high-alloy steel that can resist corrosion in the air or in chemically corrosive media. Stainless steel has a beautiful surface and good corrosion resistance. It does not need to undergo surface treatment such as color plating, but instead exerts the inherent surface properties of stainless steel. It is used in many A type of steel, commonly referred to as stainless steel. The representative performance is high alloy steel such as 13 chrome steel and 18-8 chrome nickel steel. From the metallographic point of view, because the stainless steel contains chromium, a very thin chromium film is formed on the surface, which isolates the oxygen from the steel and plays a role in corrosion resistance. According to the stainless steel parts processing factory, in order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium. For occasions where welding is required. The lower carbon content minimizes carbide precipitation in the heat-affected zone near the weld, which can lead to intergranular corrosion (weld erosion) of stainless steel in some environments.

The processing method of precision parts includes using the programmability of the machining center to reasonably compile the numerical control machining program, and optimizing the cutting parameters by utilizing the humanized characteristics of the machining center. Reasonable selection of tool geometry and the use of ordinary high-speed steel drills and end mills to process high-precision and large-aperture ratio titanium alloy holes. And the practicality of improving the tool, optimizing the cutting parameters and the processing method is verified by the processing of the actual sample. Titanium alloy is a widely used high temperature alloy, which is mainly used in the manufacture of protective casings for logging instruments. Therefore, the processing technology of titanium alloys processed by precision parts has a direct impact on the quality of titanium alloy products, which involves the machining of titanium alloys, especially the processing technology of deep hole drilling, and the processability of deep hole drilling. How to determine the application range of titanium alloys. The existing technology of precision parts processing is to use mixed ceramic bearings to match lubricating oil, which may not be a problem for the main shaft at 15000r/min. We have also found that some manufacturers use another type of bearing that still consists of sheet metal inside and outside, but the rotating part is made of a very rigid, durable ceramic material. Heat is the natural enemy of bearing accuracy and longevity. When the main shaft runs to 10000r/min, it is more representative to use the oil mist (OilAirLube) instrument system. This system provides minimal (but sufficient) lubricating oil to reduce bearing heat generation, and the blowpipe also helps dissipate heat. The remaining heat is transferred to a cooling system that does not cause circulation and is closed.

After the CNC machined workpiece is clamped once on the machining center, the digital control system can control the machine tool to automatically select and replace the tool according to different processes, and automatically change the machine tool spindle speed, feed rate and the movement path of the tool relative to the workpiece and other auxiliary functions. , to complete the multi-process processing on several surfaces of the workpiece in turn. And there are a variety of tool change or tool selection functions, so that the production efficiency is greatly improved. Due to the centralized process and automatic tool change, the machining center reduces the time for workpiece clamping, measurement and machine tool adjustment, so that the cutting time of the machine tool reaches about 80% of the machine tool startup time (ordinary machine tools are only 15 to 20%); at the same time It also reduces the workpiece turnover, handling and storage time between processes, shortens the production cycle, and has obvious economic effects. The machining center is suitable for small and medium-sized batch production with complex parts shape, high precision requirements and frequent product replacement. 1. The CNC machining center has good machining consistency and economic benefits. Compared with other CNC machine tools, it has the following characteristics: 2. When the workpiece processed by CNC is complex and the process flow is very long, it can eliminate the human interference factors in the process flow, and has high production efficiency and quality stability. 3. Due to the centralized process and the automatic tool changing device, the workpiece can complete the compound processing such as milling, drilling, boring, expanding, reaming, tapping and so on with precision requirements after one clamping. 4. When there is an automatic exchange worktable, when one workpiece is being processed, the other worktable can realize the clamping of the workpiece, thereby greatly shortening the auxiliary time and improving the processing efficiency.

There are three conditions for turning on the power supply of the precision CNC machining center: (1) The source ON button is closed. (2) The power OFF button is closed. (3) The external alarm contact is opened. But if one of them can't be done, it will not light up, so what should we do if the power is not turned on? The following introduction is as follows:   There are two lights on the power supply of the precision CNC machining center unit, one is the power indicator light, which is green; the other is the power alarm light, which is red. The power supply unit mentioned here includes the power input unit and the power control part.   When the power supply of the CNC machining center cannot be turned on, if the power indicator (green) does not light up. The fuses F1 and F2 of the power supply unit have been blown. This is caused by the input high voltage, or the components of the power supply unit itself have been damaged.   Precision CNC machining center input voltage is low. Please check the voltage entering the power supply unit, the allowable value of the voltage is AC 200V+10%, 50HZ±1HZ   Defective power supply unit with damaged element inside   The power indicator light is on, and the warning light also disappears, but the power supply cannot be turned on. This is because the conditions for power-on (ON) are not satisfied. By the following switch circuit, the conditions for power on are as follows: CNC machining center power supply unit alarm light on (1) The fuse for the 24V output voltage is blown ①. The 9" display screen uses +24V voltage, see the figure below, check whether +24V and ground are short-circuited. ②. Defective display/manual data input board

The process analysis of CNC machining center parts processing mainly has the following points: Determination of the programming origin of the CNC machining center Since the outline of the workpiece is symmetrical with the center of the workpiece, according to the determined origin of the programming origin, the programming origin in the G17 plane is taken at the symmetrical center of the workpiece, and the Z-direction programming origin is taken on the upper surface of the workpiece. Positioning and clamping of CNC machining center workpieces and selection of tools 1. Selection of the cutter 2. In order to reduce the number of tool changes, the same tool is used for the rough and tip machining of the workpiece in this example. 3. The positioning and clamping of the workpiece of the CNC machining center in Dongguan Since the workpiece is processed in a single piece, a general fixture is used for positioning and clamping during the processing. In this example, precision flat-nose pliers are selected for workpiece clamping according to processing requirements.  Determine the processing parameters The determination of the processing parameters depends on the programmer's experience, the machining accuracy and surface quality of the workpiece, the material properties of the workpiece, the material and shape of the tool, and the rigidity of the tool holder. When roughing at a given speed, in order to improve productivity, on the premise that the quality of the workpiece is guaranteed, a higher feed speed can be selected. Generally, 100-200m/min is taken, and the outer buckle is roughly added by 1: in order to ensure the requirements of machining accuracy and surface roughness, a smaller feed speed should be selected, generally selected within the range of 50-100mm/min. For example, the feed speed of tip processing is 50mm/min, and the feed speed of tool idle stroke is generally selected at G00 speed or within the range of 600-1500mm/min.

Introduction to the processing of stainless steel parts, stainless steel, hard, will generate a lot of heat during processing, which will greatly damage the tool. It often causes headaches for many people. With the right medicine, everything becomes easier. Tungsten-cobalt alloys have good toughness, light cutting, and chips are not easy to stick to the tool, especially suitable for roughing and interrupted cutting stainless steel turning with large vibration. Our commonly used cutter heads are W10, W20, YW2. The material of the shank is 45-gauge steel quenched and tempered, which can strengthen the strength and rigidity.   The stainless steel parts processing company said that the rake angle of the tool is 15°~20°, which is the most suitable for the treatment of stainless steel cutting heat. When roughing, use a smaller relief angle first; when finishing, because it is easy to harden the material during processing, the relief angle of about 6°~8° is the most suitable. In general, the relief angle should be appropriately larger than when machining ordinary carbon steel. The inclination angle of the blade is usually 15°. In the case of fine turning of outer circles, fine turning holes, and fine planing planes, when the amount of cutting tool is relatively small, a tool with a large blade inclination angle of about 50° should be used.   According to the stainless steel parts processing company, the cutting speed should not be too fast. The line speed is 60~80 m/s, and the cutting amount is 5-6 mm each time. A few wires to half a millimeter mm/r is appropriate. Never treat stainless steel in the same way as ordinary carbon steel The cooling lubricant can reduce the cutting heat and cutting force during the cutting process, which not only prolongs the service life of the tool, but also ensures the smoothness of the product. Emulsion can be used, but for products with high requirements on smoothness, special cutting oil for stainless steel should be used

1. When processing stainless steel parts, try to select the design datum on the part as the positioning datum. When formulating a machining plan for a part, first select the best precision benchmark for machining center machining. This requires that during rough machining, consider what kind of rough datum is used to machine all sides of the fine datum, that is, each positioning datum used on the machining center should be processed in the previous ordinary machine tool or machining center process, so that it is easy to ensure that each workpiece is processed. Moreover, when some surfaces are completed by multiple clamping or other machine tools, selecting the same datum positioning as the design datum can not only avoid the positioning error caused by the misalignment of the datum , to ensure machining accuracy and simplify programming.   2. When machining of stainless steel parts, when the processing of the stations including the design datum cannot be completed on the machining center at the same time, the positioning datum and the design datum should be overlapped as much as possible. At the same time, it should also be considered that after using the reference positioning, the processing of all key precision parts can be completed in one clamping. In order to prevent the finished parts from going through multiple unimportant dimensional processing and multiple turnovers, resulting in deformation, bumping and scratching of the parts, it is considered to complete as many processing contents as possible at one time (such as screw holes, free holes, chamfers, At the same time as non-important surfaces, tool inspection, etc.), the processes completed on the machining center are generally arranged at the end. ​​ 3. Processing of stainless steel parts When processing the datum and completing the processing of each station on the machining center, the selection of the positioning datum needs to consider the completion of as much processing content as possible. To this end, it is necessary to consider the positioning method that is convenient for all surfaces to be processed. For example, for the box, it is best to use the positioning method of two pins on one side, so that the tool can process other surfaces.