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What are the precautions for deep hole drilling processing?
No matter what deep hole products we are processing, there are corresponding precautions, especially for deep hole drilling processing.
Chenju Precision will introduce to you the precautions for deep hole processing:
Due to the limitations of small hole diameter, small diameter and large length of the tool rest, it results in poor rigidity, low strength, vibration, ripples and large taper during cutting, which affects the straightness and surface roughness of deep holes.
When drilling and reaming, if there is no dedicated equipment, it is difficult to inject the cooling and lubricating agent into the cutting area, which reduces the durability of the tool and also makes it hard to remove the chips.
During the deep hole drilling process, the cutting state of the tool cannot be directly observed. Based on work experience, it is only possible to determine whether the cutting process is normal by listening to the sound during the cutting, observing the chips, hand vibration and workpiece temperature, and observing the instruments (oil pressure gauge and ammeter).
4: Difficulties in chip removal. Reliable methods must be adopted to break the chips and control their length and shape to facilitate smooth removal and prevent chip clogging.
To ensure the smooth progress of deep hole drilling and achieve the required processing quality, it is necessary to add an internal (or external) chip removal device for the tool, a tool guiding bearing device and a high-pressure cooling and lubrication device.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services for customers, with sample production within 3 days and delivery within 7 days.
When processing, if it's a small quantity, the quality is relatively easy to control because there's no rush and we can be more meticulous. However, when it comes to large batches, it's often difficult to keep an eye on everything. Therefore, to ensure quality, some techniques are needed. Let's take a look at them below.
Poor processing accuracy of batch precision parts is usually due to improper adjustment of the feed dynamic error between each axis during installation and adjustment, or changes in the transmission chain of each axis of the machine tool after use and wear. This issue can be resolved by readjusting and modifying the clearance compensation amount.
When the dynamic tracking error is too large and an alarm is triggered, the following can be checked: whether the speed of the servo motor is too high; whether the position detection component is in good condition; whether the contact of the position feedback cable connector is good; whether the corresponding analog output latch and gain potentiometer are in good condition; and whether the corresponding servo drive device is normal.
When the machine tool is in motion, overshoot may cause poor processing accuracy. This could be due to too short acceleration and deceleration times, in which case the time for speed changes can be appropriately extended. It could also be because the connection between the servo motor and the lead screw is loose or has too little rigidity. In such cases, the gain of the position loop can be appropriately reduced.
III. Excessive Roundness Error When Two Axes Are Linked
When processing precision parts, this kind of deformation may be caused by improper mechanical adjustment. Poor positioning accuracy of the shaft or improper compensation for the lead screw clearance can lead to roundness error when exceeding the limit.
(2) Oblique elliptical error
At this point, the position deviation values of each axis should be checked first. If the deviation is too large, the position loop gain can be adjusted to eliminate it. Then, check whether the interface board of the resolver or induction synchronizer is properly adjusted, and then check whether the mechanical transmission pair clearance is too large and whether the clearance compensation is appropriate.
If there are any subsequent projects requiring precision parts processing, you can send the drawings to this email for evaluation and quotation: info1@us.cjcncmachining.com
What should be noted when using a five-axis CNC vertical machining center?
1. Safety operation: When operating, it is essential to strictly follow the safety operation procedures to ensure the safety of personnel.
2. Parameter Settings: According to the requirements of the workpiece to be processed, set appropriate processing parameters, including speed, feed rate, and cutting depth, etc.
3. Clamping the workpiece: Before processing, the workpiece must be clamped correctly to ensure that it does not move or loosen during the processing.
4. Equipment commissioning: Before commencing processing, it is necessary to commission the equipment to ensure that all its functions are operating normally.
5. Tool selection: Select appropriate tools based on processing requirements to ensure processing quality and efficiency.
6. Machining path planning: For complex curved surface parts, it is necessary to plan the machining path in advance to ensure a smooth and accurate machining process.
7. Quality Inspection: After processing is completed, quality inspection of the processed parts is required to ensure that the processing quality meets the requirements.
In general, the usage of a five-axis vertical machining center requires attention to safety operation, parameter setting, workpiece clamping, equipment debugging, tool selection, processing path planning, and quality inspection, etc. Only by strictly following the operating procedures can the processing quality and efficiency be guaranteed.
What are the differences between three-axis, four-axis and five-axis CNC machining centers?
Three-axis, four-axis, and five-axis CNC machining are also terms frequently heard in our industry. They sound very sophisticated, but some users may not be able to explain exactly what they are.
It is still necessary to have a general understanding of these types of CNC machining. CNC milling machines are classified according to the number of axes they operate on. These movements determine the features of the parts that can be manufactured and also affect production efficiency and accuracy. Generally speaking, the more degrees of freedom available, the more complex the geometric shapes that can be produced. So, what are the differences between three-axis, four-axis, and five-axis? What are their respective advantages? And which products are they suitable for processing?
Three-axis CNC machining generally refers to three linear motion axes in different directions, such as up and down, left and right, and front and back. With three-axis machining, only one surface can be processed at a time, which is suitable for dry processing of some disc-shaped parts. However, for many parts that require holes or grooves to be machined on multiple surfaces, this is a limitation.
Two, four-axis CNC machining is achieved by adding a rotating axis to the three axes, usually a 360° rotation in the horizontal plane, but it cannot rotate at high speed. It is suitable for processing some box-type parts. Most four-axis CNC machines also allow the workpiece to rotate, which is called the B-axis. In this way, the machine can serve as both a milling machine and a lathe. If you need to drill holes on the side of a part or on the curved surface of a cylinder, four-axis CNC machining is the best choice. It greatly speeds up the processing and has high processing accuracy.
Three and five-axis CNC machining adds one more rotational axis on top of the four-axis. Generally, it is a 360° rotation on the vertical plane. Five-axis machining can achieve comprehensive processing, allowing for a single clamping, which can reduce clamping costs and minimize the risk of product scratches and damages.
How to choose a reliable machining manufacturer?
One: Processing capacity is the key.
When choosing a machining factory, the first thing to consider is the processing capacity. Processing capacity includes processing equipment, technical level and processing ability. A good machining factory must have advanced processing equipment and technical level, and be able to meet the processing needs of customers. At the same time, the processing capacity should also match the needs of customers. Different processing factories also have different processing capacities.
II. Quality certification is a necessary condition.
When choosing a machining factory, we also need to consider quality certification. A good machining factory must have ISO quality certification, which can prove that the machining quality of the factory has reached international standards. At the same time, we should also pay attention to the production environment, process flow and other aspects of the processing factory to ensure the reliability of the product quality.
Three, the level of service is also very important.
In addition to processing capabilities and quality certifications, service level is also a key factor in choosing a machining manufacturer. When selecting a good machining manufacturer, one should not only consider its processing capabilities and quality certifications, but also its service level. A good machining manufacturer should have a complete after-sales service system and be able to handle customers' problems and demands in a timely manner.
By considering the above three aspects, we can choose a suitable machining factory. Of course, we can also search online or consult friends to obtain more information. Selecting a good machining factory not only ensures the quality of the products but also better meets the needs of customers.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in handling complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services to customers, with sample production within 3 days and delivery within 7 days.
How to Improve the Quality of CNC Machining for Holes
In the modern manufacturing field, hole processing, as an important part of CNC machining, is widely applied in various areas such as mechanical parts, molds, and aviation components. Due to its direct impact on the product structure and assembly performance, it is necessary to control and optimize it from multiple dimensions during the actual processing to better meet the design requirements and enhance the overall performance of the parts.
I. Material Properties Affect the Effect of Hole Machining
The physical properties of different materials directly affect the processing methods and results of holes. For instance, stainless steel has a high hardness and poor thermal conductivity, which can lead to rapid tool wear and large hole diameter deviations during processing. Aluminum alloy, on the other hand, is soft and prone to tool adhesion, requiring the use of special geometry tools to improve surface quality. Therefore, before hole processing, it is necessary to fully understand the cutting characteristics of the material and rationally select the type of tool and processing parameters based on the material.
Two, Equipment stability determines dimensional consistency.
The geometric accuracy of CNC machine tools and the stability of the servo system are important foundations for ensuring the consistency of hole size. If there are minor deviations in the machine tool, especially in batch production, it is very easy to cause the accumulation of hole diameter errors. It is recommended to conduct necessary inspections and corrections on the machine tool before hole processing, maintain the good condition of the spindle, guide rail and fixture system, and carry out regular maintenance to ensure that the overall equipment is in a controllable operating state.
III. Process parameter settings should be adapted to the specific requirements of each hole.
Different hole types (through holes, blind holes, countersunk holes, etc.) have different requirements for processing parameters. For example, when processing deep holes, it is necessary to control the cutting depth and chip removal method to avoid tool breakage or chip accumulation inside the hole, which may affect the dimensional accuracy. For holes with high precision requirements, it is recommended to use a multi-process combination (such as pre-drilling + boring + reaming) approach to improve the processing quality of the hole in stages.
Four. Fixture design directly affects positioning accuracy.
A reasonable fixture can not only stabilize the workpiece but also improve the consistency of the hole position and the repeatability of the positioning accuracy. The fixture design should fully consider the shape of the workpiece, the direction of force and the processing sequence to prevent the workpiece from deforming or shifting due to improper clamping. For parts with complex structures or thin walls, soft fixtures or vacuum adsorption can be used to improve the clamping stability.
V. Inspection methods are the guarantee of quality control.
After the hole processing is completed, effective inspection and verification are required. Common inspection tools include coordinate measuring machines, pneumatic measuring instruments, and plug gauges, etc. It is recommended to implement phased inspections during the processing to adjust process parameters in a timely manner to prevent increased repair costs later. At the same time, the geometric elements such as the axis position of the hole and the offset of the tolerance zone should also be included in the quality control scope to avoid affecting assembly or fit due to omissions.
Although precision hole processing is a routine procedure in mechanical processing, the requirements for the details of the process are rather complex. Reasonable selection of materials, stable equipment status, scientific setting of parameters, optimization of fixture structure and strict control of the inspection process can all effectively improve the quality of CNC hole processing. In a highly competitive manufacturing environment, paying attention to the execution details of each process is not only responsible for product quality but also provides a strong guarantee for enterprises to establish a stable customer reputation.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in handling complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services, with sample production within 3 days and delivery within 7 days.
If there are any subsequent projects that require CNC machining, you can send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com
The main application industries of five-axis CNC machining
Five-axis CNC machining of impeller parts: such as turbocharger impeller machining, secondary impeller machining, seven-stage impeller machining for turbomolecular pumps, high-pressure water pump impeller machining, air compressor impeller machining, blower impeller machining, scroll plate parts machining, blower impeller plate machining, etc.
Five-axis CNC machining of military parts: Customized CNC processing of various parts for military products. The pictures have been treated for confidentiality.
Five-axis CNC machining of aerospace parts: aircraft propeller parts, turbocharger parts, transmission housing machining, hydraulic system and component machining, electromechanical component parts, engine component machining, landing gear assemblies, unmanned aerial vehicle (UAV) parts machining, etc.
Five-axis CNC machining of medical parts: bone plate processing, custom medical bone file parts, processing of implantable medical device components, surgical robots, surgical instruments, surgical robot bodies, processing of medical device components, etc.
Five-axis CNC machining of automotive parts: such as engine blocks, reverse bowls of car lamps, gear box housings, turbocharger assemblies, automotive valves, automotive brake system components, suspension pins and arms, drive shafts, hydraulic joints and bushings, valves, pump bodies, etc.
Five-axis CNC machined robot parts: such as robot reducers, robot joints, robot arms, exoskeleton wearable robot parts customization, quadruped robot parts CNC machining, etc.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in handling complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services for customers, with sample production within 3 days and delivery within 7 days.
When machining stainless steel CNC structural parts, the following details should be noted:
Structural feasibility: When designing stainless steel structural components, the processing feasibility should be taken into account. Complex structures may lead to processing difficulties or be impossible to achieve. Therefore, structural analysis and evaluation should be conducted during the design stage to ensure the feasibility of the structure and its processing performance.
Wall thickness control: The wall thickness of stainless steel structural components needs to be reasonably controlled. Excessively thin walls may lead to processing difficulties, deformation or damage, while overly thick walls may increase processing time and costs. It is necessary to select an appropriate wall thickness based on specific circumstances and ensure stability during the processing.
Tolerance control: Precise tolerance control is crucial for the processing of stainless steel structural components. Reasonable setting of cutting parameters, selection of appropriate tools and processing paths should be carried out to ensure that the processing dimensions meet the design requirements and comply with relevant standards and tolerance requirements.
Hole depth control: When processing hole depth, it is necessary to pay attention to controlling the cutting parameters and processing strategies to avoid processing difficulties, damage or instability. Select the appropriate hole depth according to specific requirements and ensure cooling and lubrication during the cutting process.
It should be noted that stainless steel has high hardness and good wear resistance, but it also causes certain tool wear and processing difficulty. Therefore, when machining stainless steel CNC structural parts, reasonable cutting parameters, cooling and lubrication, tool selection and appropriate processing technology are very important.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services for customers, with sample production within 3 days and delivery within 7 days.
If there are any subsequent projects requiring stainless steel CNC machining, please send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com
When machining stainless steel CNC structural parts, the following details should be noted:
Structural feasibility: When designing stainless steel structural components, the processing feasibility should be taken into account. Complex structures may lead to processing difficulties or be impossible to achieve. Therefore, structural analysis and evaluation should be conducted during the design stage to ensure the feasibility of the structure and its processing performance.
Wall thickness control: The wall thickness of stainless steel structural components needs to be reasonably controlled. Excessively thin walls may lead to processing difficulties, deformation or damage, while overly thick walls may increase processing time and costs. It is necessary to select an appropriate wall thickness based on specific circumstances and ensure stability during the processing.
Tolerance control: Precise tolerance control is crucial for the processing of stainless steel structural components. Reasonable setting of cutting parameters, selection of appropriate tools and processing paths should be carried out to ensure that the processing dimensions meet the design requirements and comply with relevant standards and tolerance requirements.
Hole depth control: When processing hole depth, it is necessary to pay attention to controlling the cutting parameters and processing strategies to avoid processing difficulties, damage or instability. Select the appropriate hole depth according to specific requirements and ensure cooling and lubrication during the cutting process.
It should be noted that stainless steel has high hardness and good wear resistance, but it also causes certain tool wear and processing difficulty. Therefore, when machining stainless steel CNC structural parts, reasonable cutting parameters, cooling and lubrication, tool selection and appropriate processing technology are very important.
Chenju Precision specializes in precision parts processing services, offering 3-axis, 4-axis, and 5-axis CNC machining, turning and milling compound processing, CNC lathe processing, and small-batch parts processing, etc. It excels in complex-structured workpieces and can customize special fixtures and jigs for projects. Each product undergoes at least four full inspection procedures, with a quality pass rate of 99.93%. It provides high-quality small-batch processing customization services for customers, with sample production within 3 days and delivery within 7 days.
If there are any subsequent projects requiring stainless steel CNC machining, please send the drawings to this email address for evaluation and quotation: info1@us.cjcncmachining.com
In ChenJu Precision, our technical sales staff will response to your custom CNC machining parts within 30 minutes with 1-to-1 online service. you will get the professional advice and save you R&D time.
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