The team of in-house designers responsible for cnc turning milling brass parts and suchlike products in our company - Honscn Co.,Ltd are leading experts in this industry. Our design approach begins with research – we will conduct a deep dive of goals and objectives, who will use the product, and who makes the purchasing decision. And we leverage our industry experience to create the product.
HONSCN has become a brand that is widely purchased by global customers. Many customers have remarked that our products are absolutely perfect in the quality, performance, usability, etc. and have reported that our products are the best-seller among the products they have. Our products have successfully helped many startups find their own footing in their market. Our products are highly competitive in the industry.
At Honscn, customers can get cnc turning milling brass parts and other products together with more considerate services. We have upgraded our distribution system, which enables a faster and safer delivery. Besides, to better cater to customer's actual need, the MOQ of the customized products is negotiable.
Thread machining is one of the very important applications of CNC machining center. The machining quality and efficiency of thread will directly affect the machining quality of parts and the production efficiency of machining center.With the improvement of the performance of CNC machining center and the improvement of cutting tools, the method of thread machining is also improving, and the accuracy and efficiency of thread machining are also gradually improving. In order to enable technicians to reasonably select thread processing methods in processing, improve production efficiency and avoid quality accidents, several thread processing methods commonly used in CNC machining center are summarized as follows:1. Tap processing method
1.1 classification and characteristics of tap processingUsing tap to process threaded hole is the most commonly used processing method. It is mainly applicable to threaded holes with small diameter (d30) and low requirements for hole position accuracy.
In the 1980s, the flexible tapping method was adopted for threaded holes, that is, the flexible tapping collet was used to clamp the tap. The tapping collet can be used for axial compensation to compensate the feed error caused by the non synchronization between the axial feed of the machine tool and the spindle speed, so as to ensure the correct pitch. The flexible tapping collet has complex structure, high cost, easy damage and low processing efficiency. In recent years, the performance of CNC machining center Gradually, the rigid tapping function has become the basic configuration of CNC machining center.
Therefore, rigid tapping has become the main method of thread machining.That is, the tap is clamped with a rigid spring collet, and the feed of the spindle is consistent with the spindle speed controlled by the machine tool.Compared with the flexible tapping chuck, the spring chuck has the advantages of simple structure, low price and wide application. In addition to holding the tap, it can also hold the end milling cutter, drill bit and other tools, which can reduce the tool cost. At the same time, the rigid tapping can be used for high-speed cutting, improve the use efficiency of the processing center and reduce the manufacturing cost.
1.2 determination of threaded bottom hole before tappingThe processing of threaded bottom hole has a great impact on the life of tap and the quality of thread processing. Generally, the diameter of threaded bottom hole drill is close to the upper limit of the diameter tolerance of threaded bottom hole,For example, the bottom hole diameter of M8 threaded hole is 6.7 0.27mm, select the drill bit diameter as 6.9mm. In this way, the machining allowance of tap can be reduced, the load of tap can be reduced, and the service life of tap can be improved.
1.3 selection of tapWhen selecting taps, first of all, the corresponding taps must be selected according to the processed materials. The tool company produces different types of taps according to different processing materials, and special attention should be paid to the selection.
Because the tap is very sensitive to the processed materials compared with the milling cutter and boring cutter. For example, using the tap for processing cast iron to process aluminum parts is easy to cause thread dropping, disorderly threading and even tap breaking, resulting in workpiece scrapping. Secondly, pay attention to the difference between the through-hole tap and the blind hole tap. The front-end guide of the through-hole tap is long, and the chip removal is the front-end chip. The front-end guide of the blind hole is short, and the chip removal is the front-end It is the back chip. Machining the blind hole with a through-hole tap cannot guarantee the thread machining depth. Moreover, if a flexible tapping collet is used, it should also be noted that the diameter of the tap handle and the width of the four sides should be the same as that of the tapping collet; the diameter of the tap handle for rigid tapping should be the same as that of the spring jacket. In short, only a reasonable selection of the tap can ensure the smooth machining.
1.4 NC programming of tap machiningThe programming of tap machining is relatively simple. Now the machining center generally solidifies the tapping subroutine and only needs to assign values to various parameters. However, it should be noted that the meaning of some parameters is different due to different NC systems and different subroutine formats.For example, the programming format of Siemens 840C control system is g84 x_y_r2_r3_r4_r5_r6_r7_r8_r9_r10_r13_. Only these 12 parameters need to be assigned during programming.
2. Thread milling method2.1 characteristics of thread millingThread milling adopts thread milling tool and three-axis linkage of machining center, that is, x-axis and y-axis arc interpolation and z-axis linear feed.
Thread milling is mainly used to process large hole threads and threaded holes of difficult to process materials. It mainly has the following characteristics:(1) high processing speed, high efficiency and high processing precision. The tool material is generally cemented carbide, with fast tool walking speed. The manufacturing precision of the tool is high, so the milling thread precision is high.(2) the milling tool has a wide range of application. As long as the pitch is the same, whether it is left-hand thread or right-hand thread, one tool can be used, which is conducive to reducing the tool cost.
(3) milling is easy to remove chips and cool, and the cutting condition is better than that of tap. It is especially suitable for thread processing of difficult to process materials such as aluminum, copper and stainless steel, especially for thread processing of large parts and components of precious materials, which can ensure the thread processing quality and workpiece safety.(4) because there is no tool front-end guide, it is suitable for machining blind holes with short thread bottom holes and holes without tool return grooves.2.2 classification of thread milling tools
Thread milling tools can be divided into two types, one is the machine clamp cemented carbide blade milling cutter, and the other is the integral cemented carbide milling cutter. The machine clamp cutter has a wide range of applications. It can process holes with thread depth less than the blade length or holes with thread depth greater than the blade length. The integral cemented carbide milling cutter is generally used to process holes with thread depth less than the tool length.2.3 NC programming of thread millingThe programming of thread milling tool is different from that of other tools. If the processing program is wrong, it is easy to cause tool damage or thread processing error. The following points should be paid attention to during programming:
(1) firstly, the threaded bottom hole shall be processed well, the small diameter hole shall be processed with a drill, and the larger hole shall be bored to ensure the accuracy of the threaded bottom hole.(2) when cutting in and cutting out the tool, the arc path shall be adopted, usually 1 / 2 turn, and 1 / 2 pitch shall be traveled in the z-axis direction to ensure the thread shape. The tool radius compensation value shall be brought in at this time.(3) the x-axis and y-axis circular arc shall be interpolated for one week, and the main shaft shall travel a pitch along the z-axis direction, otherwise the threads will be buckled disorderly.
(4) specific example program: the diameter of thread milling cutter is 16. The threaded hole is M48 1.5, the depth of threaded hole is 14.The processing procedure is as follows:(the procedure of threaded bottom hole is omitted, and the bottom hole shall be bored) G0 G90 g54 x0 y0g0 Z10 m3 s1400 m8g0 z-14.75 feed to the deepest thread G01 G41 x-16 Y0 F2000 move to the feed position, add radius compensation G03 x24 Y0 z-14 I20 J0 f500 cut in with 1 / 2 circle of arc G03 x24 Y0 Z0 I-24 J0 F400 cut the whole thread G03 x-16 Y0 z0.75 I-20 J0 f500 cut out with 1 / 2 circle of arc G01 G40 x0 Y0 return to the center and cancel radius compensation G0 Z100M30
3. Snap method3.1 characteristics of snap methodLarge threaded holes can sometimes be encountered on box parts. In the absence of tap and thread milling cutter, the method similar to lathe pick-up can be adopted.
Install the thread turning tool on the boring bar to bore the thread.The company once processed a batch of parts with m52x1.5 thread and 0.1mm positional degree (see Figure 1). Because of the high positional requirements and large thread hole, it is impossible to process with tap and there is no thread milling cutter. After the test, the thread picking method is adopted to ensure the processing requirements.3.2 precautions for buckle picking method
(1) after the spindle is started, there shall be a delay time to ensure that the spindle reaches the rated speed.(2) during tool retraction, if it is a hand ground thread tool, because the tool cannot be grinded symmetrically, reverse tool retraction cannot be adopted. The spindle orientation must be adopted, the tool moves radially, and then the tool retraction.(3) the manufacturing of the cutter bar must be accurate, especially the position of the cutter slot must be consistent. If it is inconsistent, multiple cutter bars cannot be used for processing, otherwise it will cause disorderly buckle.
(4) even if it is a very fine buckle, it cannot be picked with one knife, otherwise it will cause tooth loss and poor surface roughness. At least two knives shall be divided.(5) the processing efficiency is low, which is only applicable to single piece, small batch, special pitch thread and no corresponding tool.3.3 specific procedures
N5 G90 G54 G0 X0 Y0N10 Z15N15 S100 M3 M8
N20 G04 X5 delay to make the spindle reach the rated speedN25 G33 z-50 K1.5 turnbuckleN30 M19 spindle orientation
N35 G0 X-2 cutterN40 G0 z15 tool retractionEditing: JQ
1. Fault phenomenonWhen changing the knife, the manipulator is stuck and cannot change the knife. The position of the manipulator for changing the knife is offset, and the knife is changed.2 fault analysis and treatment
2.1 tool change principleThe machining center is a rotary tool magazine, and the tool change mechanism is cam type. The tool change process is as follows:(1) Write m06t01 to start the tool change and tool selection cycle.
(2) The spindle will stop at the oriented spindle stop point, the coolant stops, and the z-axis moves to the tool change position (second reference point).(3) Select the tool. After NC compiles it to PLC according to the t command, start selecting the tool. The tool magazine motor rotates and rotates the target tool number to the tool change point of the tool magazine. Note that the t command is the tool sleeve position of the tool magazine at this time.(4) The tool change motor drives the cam mechanism to rotate 90 from the parking position to grasp the tool in the effective tool sleeve and the tool in the spindle. At the same time, detect the change of the proximity switch state of the cam mechanism, the PMC output sends out the tool loosening command, the tool magazine tool sleeve tool loosening and the spindle tool loosening solenoid valve are powered on, the cam continues to rotate, drive the manipulator down, push down the tool handle and prepare for exchange. As shown in Figure 1.
(5) The manipulator rotates 180 to exchange the tool, the cam continues to move upward, install the tool into the spindle, and install the tool on the original spindle into the tool sleeve at the tool change position of the tool magazine. At the same time, the detection switch sends a tool tightening command to PMC, the solenoid valve loses power, the shaft tool handle is clamped, the butterfly spring retracts, and the spindle tool is clamped.(6) Change to the manipulator, continue to rotate 90 , and stop completing a set of tool change actions.2.2 fault analysis
Change the tool to the fourth step of 2.1. The tool change manipulator is stuck, and the spindle has been loosened for blowing, but the tool cannot be pulled out. Cut off the power and manually turn the tool change motor. After completing a tool change action, manually load and unload the tool, the action is normal, and the problems of spindle tightening tool are preliminarily eliminated. When the tool change process is performed again, the manipulator gets stuck and the manipulator claw at the tool magazine falls off. After the tool change is found, the manipulator installs the tool on the spindle and the position is offset, as shown in Figure 2.
After the tool is removed, it is found that the action is normal. The reason for this situation may be the offset between the manipulator and the spindle, or the deviation of the accuracy of the manipulator axis relative to the spindle axis, and the inaccurate positioning of the spindle will also lead to the offset of the tool change position. Implement the tool change action step by step, check the accurate positioning of the spindle, and eliminate the fault caused by inaccurate positioning. According to the table, the mechanicalThe axial position and rotation center distance of hand, knife sleeve and spindle are consistent, so the fault of mechanical jamming of mechanical mobile phone is also eliminated.
Recently, this machine tool mainly processes stainless steel and other material workpieces, with large cutting volume and heavy load. It runs under re cutting for a long time. It is found that the manipulator is not loose and the telescopic action of the manipulator claw is flexible. However, it is found that the adjustment block on the manipulator is worn. It is disassembled and observed that the adjustment block is mainly used to clamp the tool handle. After re repair and processing, try again, The offset disappears at the spindle position. The main cause of this fault is the large impact of the manipulator and frequent tool change, resulting in the loosening and wear of the clamping claw, as shown in Figure 3.
Strategic Plan You should consider whether or not you are looking for a long term relationship. You need to locate a good cultural and strategic fit. Do your due diligence and take your time in uncovering a manufacturers professional reputation in that industry. During your research, don't just look at the positive reviews to determine how good they are, look for the red flags and see how bad things can get.
The Process Type Different manufacturers use different manufacturing processes that include extrusion, co-extrusion, tri-extrusion as well as crosshead extrusion coatings.
The Plastic Materials The plastic extrusion materials are used in different applications and each of them has their unique properties. One of the most important aspects of hiring a manufacturer is considering the extrusion materials they use for the custom parts. You have to be sure that the parts will be manufactured successfully and will perform as properly as is expected. In case you are not sure about the kind of plastic extrusion materials that would be best for your parts, an engineer can assist you in that area. There are also numerous grade types for the extrudable materials so you should choose a company that can produce the grade you need.
Capabilities If you have a significant production volume requirement, it is essential to know the production capabilities of the manufacturer. The manufacturer should also be able to provide you with extensive capabilities in terms of the design, tooling and fabrication. With these plastic extrusion capabilities, a manufacturer is able to produce high quality custom parts that meet the requirements of their customers. The finishes should be considered as well as they could be matt, glossy or textured. That means your custom plastic parts manufacturer should know about the latest finishes in the market.
Tooling Custom plastic extrusion needs tooling, which is a lot cheaper compared to injection molding. A quality extrusion manufactures ought to offer you state of the art tooling capabilities. They should have an experienced team that designs, engineers and tests all tooling. This will improve productivity, efficiency, safety and reduce costs.
Customer Service When working with any manufacturer, the process will become easier if they have working customer services that communicate effectively. A great manufacturing company is determined by the quality of customer services they offer. If for instance you have any last minute requests or want to change your order, you need to know that someone will be there to attend to you and support you. This will be more important if you are looking for a long term relationship. For it to be successful custom plastic parts manufacturer there needs to be helpful and pleasant customer service.
Conclusion You must consider these things when you are looking for the right manufacturer. As long as you evaluate their previous work and ensure they can provide you with all your requirements at a reasonable price, you will find a good company to work with.
Numerical control drilling is a method of drilling using digital control technology. It has the characteristics of high precision, high efficiency and high repeatability. By pre-programming to set the drilling position, depth, speed and other parameters, CNC machine tools can automatically complete complex drilling operations.
CNC drilling machine is usually composed of control system, drive system, machine body and auxiliary device. The control system is the core, responsible for processing and sending instructions; The drive system realizes the movement of each axis of the machine tool; The machine body provides drilling platform and structural support; Auxiliary devices include cooling system, chip removal system, etc., to ensure the smooth process.In the manufacturing industry, CNC drilling is widely used in aerospace, automotive, mold manufacturing and other fields, which can meet the demand for high-precision drilling of parts and improve production efficiency and product quality.
What is the processing principle of CNC drilling technology
The processing principle of CNC drilling technology mainly includes the following steps:
1. Programming: The designed drilling pattern and parameters are converted into CNC machine tool identifiable processing program, through the keyboard on the operation panel or input machine to send digital information to the CNC device.
2. Signal processing: The CNC device performs a series of processing on the input signal, sends the feed servo system and other execution commands, and sends S, M, T and other command signals to the programmable controller.
3. Machine tool execution: After the programmable controller receives S, M, T and other command signals, it controls the machine tool body to execute these commands immediately, and feedbacks the execution of the machine tool body to the CNC device in real time.
4. Displacement control: After the servo system receives the feed execution command, the coordinate axes of the main body of the drive machine tool (feed mechanism) are accurately displaced in strict accordance with the requirements of the instruction, and the processing of the workpiece is automatically completed.
5. Real-time feedback: In the process of displacement of each axis, the detection feedback device will quickly feedback the measured value of the displacement to the numerical control device, so as to compare with the command value, and then issue compensation instructions to the servo system at a very fast speed until the measured value is consistent with the command value.
6. Over-range protection: in the process of displacement of each axis, if the phenomenon of "over-range" occurs, the limiting device can send some signals to the programmable controller or directly to the numerical control device, the numerical control system on the one hand sends an alarm signal through the display, on the other hand, it sends a stop command to the feed servo system to implement over-range protection.
What are the processing characteristics of CNC drilling technology?
CNC drilling technology has the following processing characteristics:
1. High degree of automation: the whole processing process is controlled by a pre-prepared program, reducing manual intervention and improving production efficiency.
2. High accuracy: It can realize high-precision drilling, accurate positioning, and the size and shape accuracy of the hole are guaranteed.
3. Good processing consistency: as long as the procedure is unchanged, the product quality is stable and the repeatability is high.
4, complex shape processing ability: can process a variety of complex shapes and structures of the workpiece to meet diverse needs.
5. Wide range of adaptation: suitable for drilling of a variety of materials, including metal, plastic, composite materials, etc.
6. High production efficiency: fast automatic tool change system and continuous processing ability, greatly shortening the processing time.
7. Easy to adjust and modify: the parameters and process of drilling can be adjusted by modifying the program, and the flexibility is strong.
8. Multi-axis linkage can be realized: drilling can be carried out in multiple directions at the same time, improving the complexity and accuracy of processing.
9. Intelligent monitoring: It can monitor various parameters in the processing process in real time, such as cutting force, temperature, etc., find problems in time and adjust them.
10. Good human-computer interaction: the operator can easily operate and monitor through the operation interface.
How to ensure the machining accuracy of CNC drilling technology?
The machining accuracy of CNC drilling technology is mainly ensured through the following aspects:
1. Machine tool accuracy: the selection of high-precision CNC drilling machine tools, including the structural design of the machine tool, manufacturing process and assembly accuracy. High-quality guide rails, lead screws and other transmission components can reduce motion errors.
2. Control system: The advanced CNC system can accurately control the movement trajectory and speed of the machine tool to achieve high-precision positioning and interpolation operations, so as to ensure the accuracy of the drilling position and depth.
3. Tool selection and installation: Select the appropriate drill bit and ensure its installation accuracy. The quality, geometry and wear of the tool all affect the machining accuracy.
4. Cooling and lubrication: A good cooling and lubrication system can reduce the generation of cutting heat, reduce tool wear, maintain the stability of the processing process, and help to improve accuracy.
5. Programming accuracy: Accurate programming is the basis for ensuring machining accuracy. Reasonable setting of drilling coordinates, feed speed, cutting depth and other parameters to avoid programming errors.
6. Measurement and compensation: Through the measurement equipment to detect the workpiece after processing, the measurement results are fed back to the numerical control system for error compensation, so as to further improve the processing accuracy.
7. Fixture positioning: to ensure the accurate and reliable positioning of the workpiece on the machine tool, reduce the impact of the clamping error on the machining accuracy.
8. Processing environment: stable temperature, humidity and clean working environment help to maintain the accuracy and stability of the machine tool, so as to ensure the processing accuracy.
9. Regular maintenance: Regular maintenance of the machine tool, including checking and adjusting the accuracy of the machine tool, replacing the worn parts, etc., to ensure that the machine tool is always in good working condition.
In CNC drilling technology, how to improve the surface quality of drilling
In CNC drilling technology, the surface quality of drilling can be improved by the following methods:
1. Choose the right tool: According to the processing material and drilling requirements, choose high quality, sharp and geometrically optimized drill bits. For example, the use of coated drill bits can reduce friction and wear and improve surface quality.
2. Optimize cutting parameters: set cutting speed, feed rate and cutting depth reasonably. Higher cutting speed and proper feed usually help to obtain a better surface finish, but care should be taken to avoid excessive tool wear or machining instability due to improper parameters.
3. Full cooling and lubrication: The use of effective cooling lubricant, timely take away the cutting heat, reduce the cutting temperature, reduce tool wear and the formation of chip tumors, thereby improving the surface quality.
4. Control the processing allowance: before drilling, reasonably arrange the pre-processing process, control the allowance of the drilling part, and avoid excessive or uneven impact on the surface quality.
5. Improve the accuracy and stability of the machine tool: maintain and calibrate the machine tool regularly to ensure the motion accuracy and rigidity of the machine tool, and reduce the impact of vibration and error on the surface quality.
6. Optimize the drilling path: adopt reasonable feeding and retracting methods to avoid burrs and scratches at the hole opening.
7. Control the processing environment: keep the processing environment clean, constant temperature and humidity, reduce the interference of external factors on the processing accuracy and surface quality.
8. Using step-by-step drilling: for holes with larger diameters or high precision requirements, the method of step-by-step drilling can be used to gradually reduce the aperture and improve the surface quality.
9. Hole wall treatment: After drilling, if necessary, polishing, grinding and other subsequent treatment methods can be used to further improve the surface quality of the hole.
In what fields has CNC drilling technology been widely used?
CNC drilling technology has been widely used in the following fields:
1. Aerospace field: Components used in the manufacture of aircraft and spacecraft, such as wing structures, engine components, etc., have high requirements for precision and quality.
2. Automobile manufacturing industry: drilling and processing of automobile engine cylinder block, transmission shell, chassis parts, etc., to ensure the accurate coordination of parts.
3. Electronic equipment manufacturing: It plays an important role in the drilling of printed circuit boards (PCB) to ensure the accuracy of circuit connections.
4. Mold manufacturing: high-precision drilling for all kinds of molds such as injection mold, stamping die, etc., to meet the complex structure and high-precision requirements of the mold.
5. Medical device field: precision parts for the production of medical devices, such as surgical instruments, prosthetic parts, etc.
6. Energy industry: including wind power generation equipment, petrochemical equipment and other parts drilling.
7. Marine manufacturing: drilling and processing of Marine engine parts, hull structural parts, etc.
8. Military industry: parts manufacturing of weapons and equipment to ensure their performance and reliability.
In short, CNC drilling technology has an indispensable position in all fields of modern industry because of its high precision, high efficiency and flexibility.
What is the development trend of CNC drilling technology?
The development trend of CNC drilling technology is mainly reflected in the following aspects:
1. Higher accuracy and speed: With the continuous improvement of product quality and production efficiency requirements of the manufacturing industry, CNC drilling technology will develop in the direction of higher positioning accuracy, repeat accuracy and faster drilling speed.
2. Intelligence and automation: the integration of artificial intelligence, machine learning and other technologies to achieve automatic programming, automatic optimization of processing parameters, automatic fault diagnosis and automatic error compensation functions, further reduce manual intervention, improve processing efficiency and quality stability.
3. Multi-axis linkage and composite machining: The development of multi-axis linkage drilling technology can complete the drilling of complex shapes and multi-angles in a single clamping. At the same time, with other processing processes such as milling, grinding, etc., to achieve a multi-machine energy, improve processing efficiency and accuracy.
4. Green environmental protection: Focus on energy saving and consumption reduction, using more efficient drive systems and energy-saving technologies to reduce energy consumption. At the same time, the use and treatment of cutting fluid is optimized to reduce the impact on the environment.
5. Miniaturization and large-scale: on the one hand, it meets the high precision and high stability needs of micro-parts drilling; On the other hand, it can deal with large-scale drilling of large structural parts such as ships and Bridges.
6. Network and remote control: Through the network to achieve the interconnection between equipment, remote monitoring, diagnosis and maintenance, improve the efficiency and convenience of production management.
7. New material adaptability: can adapt to new materials such as superalloy, composite materials and other drilling processing, develop the corresponding tools and processes.
8. Optimization of human-computer interaction: a more friendly and convenient human-computer interaction interface makes it easier for operators to program, operate and monitor.
As an important processing method in modern manufacturing industry, CNC drilling technology has many advantages and wide application fields. The machining principle realizes high precision drilling through programming, signal processing, machine tool execution and other steps. In terms of characteristics, it has the advantages of high degree of automation, high precision, good consistency and wide range of adaptation. In order to ensure machining accuracy, it depends on many factors such as machine tool accuracy, control system and tool selection. The quality of drilling surface can be improved by selecting cutting tools and optimizing cutting parameters. In the future, the development trend of CNC drilling technology will move towards higher precision and speed, intelligence and automation, multi-axis linkage and composite processing, green environmental protection, miniaturization and large-scale, networking and remote control, new material adaptability and human-computer interaction optimization. It is foreseeable that CNC drilling technology will continue to innovate and develop, providing more powerful support for the progress of the manufacturing industry.