• Welcome to Dominic (Guangdong) Intelligent Equipment Co., Ltd.! We are a manufacturer of CNC automatic drilling machines, specializing in supporting various customized and complex non-standard designs. Welcome to inquire for more details!

Why Must CNC Drilling Machines Undergo “Scraping”?

2025-09-16

I. What is Scraping? The “Manual Calibration Technique” for Mechanical Precision (1) A 200-Year-Old “Micro-Engraving Art” in Metal Processing In the precision-driven world of modern CNC drilling machines, scraping—an ancient craftsmanship—stands like a mysterious artisan from the depths of time, quietly wielding its magic. Also known as scraping and lapping, this technique originated during the Industrial Revolution. Having endured 200 years of evolution, it remains an irreplaceable manual finishing method in precision machinery manufacturing. It is analogous to performing delicate “micro-engraving surgery” on mechanical components, except that the “canvas” here is not artwork, but the critical contact surfaces that determine a machine’s performance. Imagine the guide rails and slide plates of a CNC drilling machine: their surfaces may seem flat before assembly, but they actually hide micron-level undulations. Enter the scraping technician, who wields a scraper to remove high spots on these surfaces, adhering to an error tolerance of 0.01–0.001 mm. To put this in perspective: a single human hair has a diameter of approximately 0.1 mm. Technicians meticulously carve 10–100 precision marks within this tiny scale, refining the component’s mating surfaces to an exceptional degree of accuracy—laying a solid foundation for the drilling machine’s stable operation. (2) Core Principle: The Qualitative Shift from “Surface Contact” to “Point Support” The core secret of scraping lies in its ingenious transformation of the rough surface contact between mechanical components into a sophisticated point-support structure. In this process, colorants (red lead oxide or blue lead oxide) act as the technician’s “magic markers.” First, the technician evenly applies the colorant to a standard fixture, then slides the fixture against the surface of the workpiece to be scraped. High spots on the workpiece will pick up the colorant, revealing themselves clearly. Like seasoned hunters, technicians use these marks to precisely scrape the workpiece, leaving regularly distributed concave points…

How important is it to choose the right manufacturer of CNC drilling machines?

2025-09-09

I. Price Section: A Good Manufacturer is Not Synonymous with “Expensive”, but a Guardian of Cost-Effectiveness 1.1 Avoiding the “Middleman Price Difference Trap”: Price Disparity Between Direct Factory Connection and Distributor Quotes In the procurement market for CNC drilling machines, price is often the first factor that buyers focus on. However, many people may not realize that there is more to the price than meets the eye. The quotes can vary significantly between purchasing directly from the factory and buying through a distributor. Take Yulong Machinery as an example: the ex-factory price of its CNC small conduit drilling machine is 38,000 yuan, which even includes commissioning costs—this price is direct and transparent. In contrast, due to the multi-level price markup, distributors may sell the same equipment at a price that is more than 30% higher. This extra cost is not a small amount and directly increases the procurement cost of enterprises. Why can manufacturers offer such competitive prices? Large manufacturers like Zhenglong Electromechanical have effectively controlled costs through large-scale production. The daily output of their double-head CNC drilling machines exceeds 200 units. Large-scale production significantly reduces the marginal cost. The fixed costs allocated to each piece of equipment, such as R&D expenses and equipment depreciation, decrease as the output increases. This enables them to provide customers with more affordable prices while ensuring product quality. In sharp contrast, some small workshops often use second-hand parts to cut costs in order to attract customers with low prices. At first glance, the price of these devices is indeed attractive, but once purchased and put into use, subsequent troubles follow one after another. Frequent breakdowns and high maintenance costs—these hidden expenses can add up to far more than the price of the equipment itself, leaving buyers in a difficult situation. Therefore, seemingly cheap equipment…

How to Maintain the Stability of CNC Drilling and Tapping Machine Performance?

2025-09-05

I. Equipment Installation: Laying a “Foundation” for Stability 1. Precise Positioning: A Millimeter-Level Installation Philosophy The installation of a CNC drilling and tapping machine is analogous to constructing a high-rise building—only with a solid foundation can stable operation be achieved afterward. During installation, operations must strictly follow the manufacturer’s provided installation manual, as this is the first step to ensuring stable equipment performance. Among all requirements, controlling the levelness of the base is crucial, with the allowable error limited to ≤0.05mm per meter. To put this in perspective: it is equivalent to ensuring the error on a 1-meter-long straightedge does not exceed half the thickness of a human hair. Such strict standards are intended to prevent vibration or displacement caused by an uneven base during equipment operation. The tightening torque of anchor bolts also cannot be overlooked. Anchor bolts of different specifications have distinct tightening torque standards. For instance, the common M12 anchor bolt typically requires a tightening torque ranging from 40 to 100 N·m. In practical operations, tools such as torque wrenches or electric wrenches should be used, and bolts should be tightened in a clockwise sequence starting from the center and moving outward. This ensures uniform pre-tightening force for each bolt, avoiding base deformation (and subsequent impacts on equipment stability) caused by uneven stress. Take the patent for a guided feeding tapping machine filed by Taixing Longyi Terminal Co., Ltd. as an example. This patent features a circular equidistant feeding base design combined with a high-precision positioning mechanism, which effectively reduces the risk of workpiece displacement during installation. In actual processing, it ensures that the axial perpendicularity error during tapping is <0.03mm, significantly improving processing accuracy and stability. This fully demonstrates the importance of precise positioning in equipment installation—only by controlling installation accuracy at the source can a…

How to Maintain the Machining Accuracy of CNC Drilling and Tapping Machines Long-Term

2025-09-02

To maintain the machining accuracy of CNC drilling and tapping machines over the long term, a full-cycle management system must be established across four core dimensions: mechanical maintenance, system calibration, operational standards, and environmental control. This system should cover every stage of the equipment’s lifecycle—from use and maintenance to monitoring and optimization. Below are 7 key steps to implement this: I. Strengthen the Mechanical Foundation: Ensure Stability and Low Wear of Core Components The accuracy of CNC drilling and tapping machines depends on the rigidity and fitting precision of the machine base, guide rails, and transmission system—these form the “foundation” of long-term accuracy. II. Strictly Control Cutting Tools and Fixtures: Avoid Accuracy Loss in “Direct Machining Components” Tool wear and fixture loosening are common causes of machining accuracy fluctuations. A system for “tool life management + regular fixture calibration” must be established. III. Optimize the CNC System: Ensure Parameter Stability and Motion Accuracy The CNC system is the “brain” of the equipment. Parameter drift and degraded servo performance directly affect positioning accuracy and machining consistency—regular calibration and maintenance are essential. IV. Standardize Daily Operations: Reduce Accuracy Loss Caused by Human Error Improper operation accelerates precision degradation. A standardized operating procedure (SOP) must be established. V. Control Environmental Factors: Eliminate External Interference with Accuracy Temperature, humidity, and dust indirectly affect equipment accuracy—workshop environmental management must be optimized. VI. Conduct Regular Accuracy Testing: Establish an “Early Warning–Correction” Cycle Routine maintenance alone cannot fully prevent precision degradation. Professional testing tools must be used to quantify accuracy regularly and address issues promptly. VII. Address Faults Promptly: Prevent Minor Issues from Escalating If accuracy anomalies occur (e.g., oversize holes, thread damage), stop operation immediately to troubleshoot and avoid worsening the problem: Summary: Core Logic for Long-Term Accuracy Maintenance The accuracy of CNC drilling and tapping machines…

How to Further Improve the Machining Efficiency of CNC Drilling Machines

2025-08-28

　　I. Hardware Upgrading: Solidifying the Physical Foundation for Efficient Machining 　　Cooling System Optimization: Resolving Thermal Machining Bottlenecks with Circulating Water Cooling 　　During the high-intensity operation of CNC drilling machines, heat acts as a hidden “efficiency killer,” silently eroding machining precision and tool lifespan. Traditional cooling methods are like stagnant water, unable to cope with the massive heat generated during high-speed drilling. However, Jinan Liaoyuan CNC’s patented eco-friendly water cooling technology (Publication No. CN 119819960 A) is like a timely rain, offering a brand-new solution to the bottleneck of thermal machining. 　　This technology uses a gear motor to drive a rotating shell, stirring the water in the cooling container as if by an invisible hand, creating a circular flow state of “upward circulation at the edges and convergence at the inner side.” Imagine the drill bit moving like it’s cutting through a rushing river— the machining area is fully immersed in the circulating coolant, quickly dissipating heat. Compared with traditional static water cooling, this dynamic cooling method delivers immediate temperature reduction effects, lowering the drill bit temperature by 30%-40%. Tool wear and workpiece deformation caused by high temperatures are effectively curbed, and the measured machining efficiency has increased by 15%-20%. Especially when machining difficult-to-process materials such as stainless steel and titanium alloys, continuous drilling is no longer a challenge, and both machining precision and efficiency are strongly guaranteed. 　　Fixture Innovation: High-Precision Clamping to Eliminate “Hidden Machining Losses” 　　If a CNC drilling machine is compared to a skilled craftsman, then the fixture is their right-hand man. A high-quality fixture not only firmly secures the workpiece but also supports efficient machining. Qidong Yuanhua Machinery’s patented CNC drilling machine fixture (Authorization Announcement No. CN 222710884 U) is undoubtedly a major innovation in the field of fixtures. 　　This fixture uses a servo electric cylinder to…

Inspection of CNC Drilling Machines Before Shipment: Multiple Checks to Ensure High-Quality Delivery of Equipment

2025-08-22

I. Inspection of Mechanical Structure: Consolidating the Foundation for Equipment Operation (I) Test Run Detection As a precision machining equipment, the stability and accuracy of the mechanical structure of a CNC drilling machine directly affect its machining quality and service life. Before shipment, a comprehensive and detailed inspection of the mechanical structure is crucial. Start the CNC drilling machine, let it start a “journey” simulating real working scenarios, and conduct a full-process test run operation. In this process, the staff, like experienced detectives, do not miss any details and carefully observe the operation status of the equipment in various links such as drilling, positioning, and feeding. They pay attention to whether the equipment runs smoothly, just like paying attention to whether a car runs smoothly, with no abnormal vibration, noise, or jamming. These abnormal situations may indicate potential problems with the equipment. For example, abnormal vibration may indicate that the spindle is unbalanced or the guide rail is improperly installed; excessive noise may be due to severe wear of transmission components; and jamming may be related to faults in the feeding system. The staff will focus on testing the rotational speed stability of the spindle. The spindle is like the “heart” of the CNC drilling machine, and the stability of its rotational speed directly determines the drilling accuracy and surface quality. Through professional rotational speed measuring instruments, real-time monitoring of the actual rotational speed of the spindle under different rotational speed settings is carried out to ensure that the deviation from the set value is within the allowable range. They will also pay attention to the accuracy of the feeding system, which is related to the position accuracy and depth control of the drilling. Using high-precision displacement sensors, the actual displacement of the feeding axis during movement is measured to…

Comprehensive Guide to Common Issues and Solutions for CNC Drilling and Tapping Machines

2025-08-21

　　I. Mechanical Operation Failures: Accurate Troubleshooting from “Abnormal Noise” to “Unstable Operation” 　　(1) Machine Fails to Start or Shuts Down Suddenly 　　It is frustrating when a CNC drilling and tapping machine fails to respond when you expect it to start efficient work. At this point, we first check the power supply and circuits. Start with the simplest: check if the power switch is damaged, just like checking the light switch when a home light stops working, then see if the power indicator lights up normally. If there is no power response at all, contact a professional electrician immediately. They will carefully inspect the wiring connections, especially the air switch, which is prone to poor contact due to moisture or overload. If necessary, aging wires or circuit breakers must be replaced. 　　Component jamming or loosening can also cause similar issues. For example, if the drill chuck is loose, the drill bit cannot transmit power properly—simply tighten it clockwise with a special tool. If the motor starts but the drill bit “refuses to work,” the drive belt is likely faulty (either broken or slipping). Replace it with a suitable belt and adjust the tension to restore normal power transmission. 　　(2) Excessive Vibration or Abnormal Noise During Operation 　　Excessive vibration or noise from a CNC drilling and tapping machine during operation is like a broken car racing down the road—it not only affects machining accuracy but also causes annoyance. Deformation of the workpiece is a common cause. If irregular chatter marks appear on the workpiece surface, stop the machine immediately to check if the material is bent or warped. Flattening deformed workpieces is crucial; otherwise, material will damage tools and compromise precision. 　　Component wear or installation issues also require attention. Abnormal noise from a high-speed motor often indicates insufficient lubrication or worn bearings….

　The Benefits of Choosing Servo Motors for Automatic Drilling Machines

2025-08-19

　　Choosing servo motors for automatic drilling machines can create significant value in three dimensions: equipment compatibility, production economy, and technical expandability, making it a key decision for improving processing efficiency. 　　In terms of equipment compatibility, the modular design of servo motors can precisely meet different drilling requirements. Their power range spans from 0.5 kW to 5 kW, enabling adaptation to all scenarios from drilling small PCB boards to punching holes in large steel structures, thereby avoiding the energy waste or power insufficiency issues associated with traditional motors being “overpowered for the task.” Through a parameterized selection tool, the appropriate model can be quickly identified based on the hardness of the drilling material and the hole diameter range, keeping the equipment load rate within the optimal range of 60%-80% and reducing mechanical wear. 　　Selecting a servo motor can significantly reduce overall costs. Dynamic response parameter matching during selection can reduce debugging time by 50% and avoid repeated trial-and-error caused by improper motor-to-spindle matching. Additionally, the energy feedback function of the servo system can recover over 30% of braking energy consumption, reducing electricity costs by 15%-20% over the long term. Its mean time between failures (MTBF) reaches 12,000 hours, three times longer than conventional motors, thereby reducing the hidden costs of downtime and maintenance. 　　Technical compatibility is the core advantage of selecting a servo motor. It supports multiple interface protocols such as pulse and bus, enabling seamless integration with mainstream CNC systems and eliminating the need for additional adapter modules. For different drilling processes, it can quickly switch operating modes through parameter configuration—enabling rigid tapping mode for metal drilling and switching to flexible cushioning mode for plastic processing, enhancing process compatibility. 　　Additionally, the brand’s servo motors offer customized selection services, optimizing encoder resolution and overload capacity based on equipment conditions to form…

Do you know the key advantages of the Domy drilling and tapping machine?

2025-08-15

　　In the wave of intelligent upgrading in manufacturing, the Domy drilling and tapping machine has emerged as a core processing equipment in industries such as electronics, automotive, and precision machinery, thanks to its outstanding technical capabilities and precise market positioning. Its advantages are not only reflected in its hardware configuration but also贯穿于 throughout the entire service process from R&D to after-sales support. 　　1. Micron-level precision ensures quality 　　Domino drilling and tapping machines utilize an imported American API laser interferometer for whole-machine precision compensation, with repeat positioning accuracy controlled within ±0.02mm. The combination of Taiwan-imported HIWIN ball screws and guide rails with servo spindle motors ensures stability during high-speed movement, making them particularly suitable for high-precision processing scenarios such as micro-holes in medical implants and heat sinks for 5G base stations. For example, in the 3C industry, when processing metal frames for smartphones, it can achieve high-efficiency operation at 500 holes per hour, with hole diameter errors less than 0.01mm. 　　2. Efficient composite processing revolutionizes traditional methods 　　Addressing the challenges of processing thin plates and tubes, Domy has pioneered a thermal drilling technology. Using a tungsten carbide alloy drill bit rotating at high speed to soften the metal through heat, it simultaneously forms a sleeve structure, enabling high-strength connections without secondary welding. The dual-head, dual-spindle design seamlessly integrates drilling and tapping processes, eliminating tool change time and boosting processing efficiency by over 3 times compared to traditional equipment. The open workbench supports multi-station cyclic processing, allowing operators to manage 3-5 machines simultaneously, reducing labor costs by 60%. 　　3. Intelligent Systems Lead Industry Trends 　　Equipped with an IoT module, Domy’s drilling and tapping machine can real-time collect data such as spindle vibration and torque, using AI algorithms to predict tool wear and automatically adjust cutting parameters. When a drill bit fracture is…

What are the primary applications of CNC drilling machines?

2025-08-13

　　CNC drilling machines, with their high precision, efficiency, and automation, are widely used across various industries, primarily in the following areas: 　　Mechanical manufacturing industry: This is one of the most common applications for CNC drilling machines. In mechanical part processing, many components such as gears, shafts, and flanges require drilling operations for subsequent assembly and positioning. CNC drilling machines can precisely control the position, depth, and diameter of drill holes, ensuring the processing accuracy and consistency of parts, and meeting the requirements for component fitting accuracy in mechanical products. 　　Automotive manufacturing industry: Critical components of automobiles, such as engine blocks, cylinder heads, and transmission housings, have a large number of holes that require processing. The accuracy and positional accuracy of these holes are crucial to the performance and reliability of automobiles. CNC drilling machines can efficiently and precisely complete these drilling tasks, improving the efficiency and quality of automotive production. 　　Aerospace industry: Aerospace components typically feature high precision, high strength, and complex structures, imposing extremely stringent requirements on drilling operations. For example, aircraft fuselage structural components and engine parts require extensive precision drilling. CNC drilling machines can meet these high standards, ensuring component quality and performance to guarantee the safety and reliability of aerospace products. 　　Mold manufacturing industry: Molds have complex structures and often require the processing of a large number of holes of different specifications and positions on the mold plate, such as guide pillar holes and ejector pin holes. CNC drilling machines can precisely process these holes according to mold design drawings, ensuring the assembly accuracy and service life of the mold while improving production efficiency. 　　Medical device manufacturing sector: Medical devices have high requirements for component precision and surface quality. Some medical device components, such as surgical instruments and connectors for medical equipment, require drilling processing. CNC…

Search within the site

About Us

Random Recommendations

Pre-Shutdown Preparations for CNC Automatic Drilling Machines Before the Spring Festival
horizontal CNC double-sided simultaneous drilling and tapping all-in-one machine
When Winter Arrives: How to Maintain CNC Drilling Machines
Domi Hot Melt Drilling and Tapping Machine: A Chip-Free Innovative Process for Thin Materials
Working Principle and Process Flow of Hot Melt Drilling Machines

Hot Tags.

  • Links:

CNC automatic drilling machine, flow drilling machine generation manufacturer. Theme By XinTheme

Consult the manufacturer Consult the manufacturer
15112784217