Technical article on CNC drilling machines

Pre-Shutdown Preparations for CNC Automatic Drilling Machines Before the Spring Festival

2026-01-28

During the long Spring Festival holiday, prolonged shutdown of CNC automatic drilling machines is prone to “holiday malfunctions” caused by rust, data loss, pipeline freezing and cracking, electrical moisture damage, etc., which will affect post-holiday production efficiency and equipment precision. Pre-holiday preparations shall center on the five core principles of Cleaning, Rust Prevention, Power Off, Safety and Moisture Proofing, and be implemented step by step in accordance with the following procedures to create a stable dormant environment for the equipment. I. Comprehensive Cleaning: Remove Impurities and Eliminate Corrosion Risks Thoroughly cleaning impurities inside and outside the equipment to prevent cutting chips and oil stains from accumulating and corroding components during the holiday is the basic step of pre-holiday preparations. II. Lubrication and Rust Prevention: Core Protection to Preserve Precision Metal components are vulnerable to humid air erosion during long holiday shutdowns. Sufficient lubrication and rust prevention treatment are required to maintain equipment precision and service life. III. Energy and Medium Control: Cut Off Risks and Prevent Accidents Standardly cutting off the supply of energy and media, and emptying residual pressure and accumulated liquid can effectively avoid potential safety hazards such as electric leakage, freezing and cracking, and leakage during the holiday. IV. Data Backup and Environmental Protection: Detailed Control to Build a Solid Safety Line Proper data backup and environmental regulation can avoid data loss or equipment damage caused by sudden incidents during the holiday, laying a foundation for post-holiday resumption of production. V. Post-Shutdown Inspection: Regular Monitoring to Respond to Sudden Incidents It is recommended to arrange a special person to conduct an inspection once a week during the long holiday to timely detect and handle environmental abnormalities and ensure equipment safety. Inspection contents include: checking for water leakage and rain leakage in the factory building, whether the desiccant…

horizontal CNC double-sided simultaneous drilling and tapping all-in-one machine

2026-01-16

This is a horizontal CNC double-sided simultaneous drilling and tapping all-in-one machine. Equipped with two sets of drilling and tapping mechanisms, it can simultaneously process both sides of a workpiece, doubling the machining efficiency while effectively ensuring product precision. The effective machining stroke of the three axes is X-axis 800mm * Y-axis 350mm * Z-axis 200mm. A T-slot worktable is designed to facilitate the clamping of workpieces with different shapes. The spindle adopts a precision servo mechanical spindle, which meets the processing requirements of steel/aluminum workpieces and can be used for drilling, chamfering, and tapping operations. The movable independent electric cabinet integrated system box adopts two sets of CNC systems to independently control the two drilling and tapping mechanisms. It can operate independently or simultaneously according to production needs, flexibly meeting the multi-sided processing requirements of workpieces. The Duomi CNC system supports CAD file import to automatically generate machining programs, eliminating the need for professional programmers. It is simple and easy to operate, and the system can store tens of thousands of machining programs. The entire machine transmission adopts absolute value servo motors, and the lead screws and guide rails are selected from HIWIN (Taiwan) brand. Each axis of the machine tool is equipped with an automatic lubrication system, which can perform timed and quantitative lubrication, replacing manual maintenance. All Duomi drilling and tapping equipment can be equipped with mainstream automatic loading and unloading mechanisms on the market, reducing personnel input. The equipment includes door-to-door delivery, as well as on-site technical installation, commissioning and training services.WhatsAPP:+86-18028913752

When Winter Arrives: How to Maintain CNC Drilling Machines

2026-01-07

With the arrival of winter, sharp drops in temperature and significant changes in humidity are likely to cause malfunctions in CNC drilling machines, affecting processing accuracy and equipment lifespan. As high-precision automated processing equipment, the electrical systems, hydraulic systems, and mechanical components of CNC drilling machines are sensitive to low-temperature environments. Improper maintenance in winter may lead to issues such as abnormal spindle speed, feed motion jamming, and oil circuit blockages. Therefore, implementing targeted winter maintenance is crucial for ensuring stable equipment operation and reducing maintenance costs. Below is a detailed overview of the key winter maintenance points for CNC drilling machines. 1. Strictly Control the Working Environment and Lay a Solid Protective Foundation Low temperature and high humidity are the main environmental factors affecting the operation of CNC drilling machines in winter. First, the temperature of the equipment’s working environment should be controlled above 10°C (50°F). Constant temperature regulation can be achieved by turning on air conditioners, heaters, or other heating equipment to avoid shortened lifespan and increased failures of control system components due to excessively low temperatures. Meanwhile, maintain a dry environment—moist air can cause dust to adhere to integrated circuit boards, leading to short circuits. Dehumidifiers can be used to reduce humidity, and doors and windows should be closed during rainy or snowy weather to prevent moisture from entering the equipment. In addition, avoid exposing the equipment directly to cold drafts and keep it away from doors, windows, and other ventilation openings to prevent sudden temperature changes from affecting mechanical accuracy. Regularly clean workshop debris and floor water stains to maintain a tidy working area and reduce equipment corrosion caused by dust and debris. 2. Properly Preheat the Equipment to Avoid Cold Start Damage During cold starts in winter, insufficient lubrication and low temperatures of various components…

Domi Hot Melt Drilling and Tapping Machine: A Chip-Free Innovative Process for Thin Materials

2025-12-16

In the field of joining and processing thin-walled materials such as sheet metal and thin tubes, traditional processes often rely on welded nuts or riveted nuts. These methods are not only cumbersome, time-consuming, and labor-intensive but also suffer from issues like high costs and inconsistent connection stability. As a new type of processing equipment imported from Germany, the Domi Hot Melt Drilling and Tapping Machine, with its mature technical principles and excellent performance, is gradually revolutionizing traditional processing models and emerging as the preferred solution for drilling and joining thin-walled materials. However, many industry professionals still lack an in-depth understanding of this innovative process. Below is a detailed analysis of its technical core and application advantages. The core technology of the Domi Hot Melt Drilling and Tapping Machine originates from Germany’s sophisticated industrial R&D system and has been introduced to China after market validation. Its biggest highlight lies in the efficient integration of “chip-free drilling + integrated tapping,” making it particularly suitable for workpieces such as thin metal sheets and tubes. Compared with traditional processing, it eliminates the need for additional welded or riveted nuts, fundamentally simplifying the processing flow while achieving triple savings in time, labor, and material costs. This significantly enhances production efficiency and product competitiveness. The hot melt drill bit, the core component of the process, is made of high-quality tungsten carbide hardened material. This material endows the drill bit with exceptional rigidity, wear resistance, and high-temperature resistance, enabling it to maintain stable performance in high-intensity processing environments and extend service life. Its working principle is quite innovative: during processing, the drill bit contacts the workpiece surface at a high rotational speed, generating an instantaneous temperature of 650-750 degrees Celsius through friction—sufficient to soften the metal in the contact area of the workpiece. Subsequently, while maintaining high-speed…

Working Principle and Process Flow of Hot Melt Drilling Machines

2025-11-21

　　As an efficient chipless machining equipment, hot melt drilling machines occupy a crucial position in the metalworking industry, relying on the core technology of frictional heating and plasticization molding. The entire machining process is continuous and efficient, integrating positioning to tapping in one seamless operation—fully demonstrating the precision and convenience of modern processing technology. The specific process flow is as follows: 　　Initially, the drill bit of the hot melt drilling machine makes precise contact with the surface of the workpiece to complete initial positioning. This step is critical for machining accuracy: the equipment uses a preset positioning system to ensure the drill bit is perpendicular to the reference surface, preventing deviations in subsequent molding. After positioning, the drilling machine activates its feed mechanism, pressing the drill bit against the material surface with high axial pressure and a stable feed rate. These pressure and speed parameters are strictly calibrated to ensure sufficient energy input while avoiding material deformation caused by uneven force, laying the foundation for subsequent frictional heating. 　　During continuous contact between the drill bit and the material, relative motion under high pressure generates intense friction, which is instantly converted into substantial heat energy. When the temperature reaches approximately 600°C— the plasticization critical point of most metal materials—the originally rigid metal surface gradually softens and exhibits plastic flow. This temperature is a core parameter of hot melt drilling technology: it ensures effective material plasticization without damaging the material’s inherent physical properties. Under the combined action of heat and pressure, the drill bit tip smoothly penetrates the plasticized material, with the entire penetration process taking only a few seconds, significantly improving machining efficiency. 　　During penetration, the hot melt drilling head, through its specialized structural design, extrudes the plasticized metal both horizontally and vertically. Horizontal extrusion forces the material to spread outward,…

Core Guide to Optimizing High-Speed Tapping Machine Performance: Lubricant Selection and Application

2025-11-14

When manufacturers aim to enhance the operational performance and health of CNC machines (especially high-speed tapping machines), they need to comprehensively consider several key variables. Among these, the adaptability of processing materials and the optimization of lubrication systems are particularly critical. A proper lubrication solution not only serves as the foundation for ensuring stable equipment operation but also acts as a key factor in improving machining accuracy and extending tool life—its importance far outweighs other auxiliary links. The lubrication system of a high-speed tapping machine mainly consists of two core types of lubricants: one is the metalworking fluid (cutting fluid) that acts directly on the cutting surface, and the other is the “behind-the-scenes lubricant” that provides auxiliary lubrication for internal mechanical structures. The selection of these two types of lubricants directly determines the equipment’s operational efficiency and service life. Using an inappropriate metalworking fluid can lead to catastrophic consequences, as it not only shortens tool life but also directly affects the surface finish and dimensional accuracy of products. Similarly, the matching degree of drilling speed, feed parameters, and processing materials must be optimized in conjunction with the lubrication solution to maximize production efficiency. When processing metal materials such as aluminum, steel, and titanium, chip accumulation and built-up edge (BUE) are common challenges. These materials tend to experience chip welding during the cutting process. This causes excess metal chips to break off during cutting and re-weld onto the cutting tool, a phenomenon driven by extremely high temperatures and friction. This can quickly result in cutting tool damage or prevent the tool from achieving desired outcomes (such as low-quality products and increased maintenance). However, such issues can be avoided by using a suitable metalworking fluid tailored to the specific operation and material. Lubrication enables the tool to cut more smoothly, reducing heat…

Methods to Extend the Service Life of Automatic Small-Hole Drilling Machines

2025-11-04

As precision machining equipment, the service life of automatic small-hole drilling machines is not only related to the return on equipment investment but also directly affects production efficiency and machining quality. The following details specific methods to extend their service life from multiple key dimensions: I. Standardize Pre-Operation Preparation for Equipment Adequate preparation before starting the automatic small-hole drilling machine is the foundation for prolonging its service life. II. Strictly Comply with Daily Operating Specifications The standardization of daily operations plays a crucial role in extending equipment life. III. Implement Proper Equipment Maintenance Regular and comprehensive maintenance is the core link in extending the service life of automatic small-hole drilling machines. (1) Regular Lubrication Formulate a reasonable lubrication plan based on the equipment manual and strictly implement it. Key moving parts of the equipment, such as the spindle, guide rails, and ball screws, require regular lubrication with oil or grease to reduce friction and wear between components. Different moving parts have different requirements for lubricating oil types and lubrication cycles: for instance, spindle bearings typically require high-precision grease and shorter lubrication intervals, while guide rails can use lubricating oil with relatively longer intervals. During lubrication, ensure the lubricant is evenly applied (avoid excess or insufficiency), and promptly clean debris around lubricated parts to prevent impurities from entering the lubrication system and affecting lubrication effectiveness. (2) Regular Cleaning During long-term operation, the equipment generates a large amount of chips, dust, and oil stains. Failure to clean these promptly will adversely affect the equipment’s performance and service life. After daily operation, operators should use dedicated cleaning tools (e.g., brushes, air guns, rags) to thoroughly clean the equipment: (3) Regular Inspection and Replacement of 易损件 (Wear Parts) The wear parts of automatic small-hole drilling machines mainly include tools (drills), seals, bearings, and belts….

Breaking the Deadlock in Data Center Liquid Cooling Pipe Processing: How Does the Hot Melt Drilling-Tapping-Milling Integrated Machine Overcome the Challenges of Stainless Steel Thin-Wall Pipe Processing?

2025-10-23

　　In the Wave of Digitalization: How Hot Melt Drilling-Tapping-Milling Integrated Machines Break Through the Bottlenecks of Liquid Cooling Pipe Processing for Data Centers 　　Amid the wave of digitalization, the “Eastern Data and Western Computing” strategy has become a crucial engine driving the development of China’s computing power industry. With the explosive growth of data volume, data centers, as the core bearing platforms for computing power, are facing increasingly prominent energy consumption issues. Relevant data shows that the power consumption of data centers in China has been rising year by year, reaching 216.6 billion kWh in 2021, accounting for approximately 2.6% of the country’s total power consumption, with carbon emissions amounting to 135 million tons, accounting for about 1.14% of the national carbon dioxide emissions. Against the backdrop of the “dual carbon” goals (carbon peaking and carbon neutrality), the green transformation of data centers is extremely urgent. 　　Liquid cooling systems, with their efficient cooling capabilities, have gradually become the mainstream choice for data centers to reduce energy consumption. Take immersion liquid cooling as an example: it can fully immerse servers in insulating cooling liquid, and through liquid boiling or circulating heat dissipation, its heat dissipation efficiency is 50 times higher than that of traditional air cooling. It can support a high power density of over 100kW per cabinet, while reducing noise by 90%. The PUE (Power Usage Effectiveness) value of data centers can reach around 1.05, significantly improving energy utilization efficiency. 　　In liquid cooling systems, stainless steel liquid cooling pipes, as the key channels for cooling liquid transmission, play a vital role. The wall thickness of these stainless steel pipes usually ranges from 0.5 to 6mm, and they need to withstand a certain level of pressure and temperature changes to ensure the stable transmission of cooling liquid. However, traditional stainless steel…

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…