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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…

Maintenance Methods for CNC Drilling Machines

2025-09-25

　As a high-precision machining tool, CNC drilling machines follow the principle of “30% usage, 70% maintenance.” Proper daily upkeep not only prevents 80% of common failures but also maintains equipment accuracy for 3-5 years without degradation, reducing long-term repair costs. Today, we’ll share highly practical maintenance methods across three dimensions—“Daily Care,” “Periodic Deep Maintenance,” and “Core Component Specialized Care”—that even beginners can apply directly. 　　I. Daily Maintenance: 10 Minutes Daily Prevents Minor Issues from Escalating into Major Failures Daily maintenance should be conducted in three phases: before startup, during operation, and after shutdown. This simple process prevents problems before they arise: CNC Drilling Machine 　　2. During Operation: Monitor Continuously to Detect Anomalies Promptly 　　Listen for Sounds: Normal operation produces a steady humming noise. Immediately stop the machine if you hear sharp, abnormal noises or stuttering sounds. Check for chips jamming the guide rails or collisions between tools and workpieces. 　　Monitor Parameters: Check the spindle temperature (typically not exceeding 60°C) and current readings on the equipment display. Sudden spikes may indicate tool wear or improper cutting parameters. Adjust settings promptly upon detecting anomalies. 　　3. After shutdown: Clean up and prepare for next use 　　Clean the worktable: Use compressed air to blow away chips from the worktable, guide rails, and fixtures (avoid electrical interfaces to prevent dust ingress). Wipe surfaces with a cloth dampened in neutral detergent to prevent rust on guide rails from residual chips. 　　Shut down the system: Follow the sequence “turn off equipment power first, then main power and air supply.” Finally, organize tools and return frequently used cutting tools to their designated storage locations to prevent disorganization and errors during future retrieval. Translated with DeepL.com (free version)

How Long Does a CNC Hot Melt Drilling and Tapping Machine Last? These 5 Core Factors Determine Its Lifespan

2025-09-18

1. Typical Service Life Range of CNC Hot Melt Drilling and Tapping Machines In major fields like 3C manufacturing and hardware processing, the regular service life of a CNC hot melt drilling and tapping machine is 3 to 5 years, which is specifically influenced by equipment load intensity, maintenance frequency, and operating conditions. Take the 3C industry as an example: due to high-precision processing requirements, the equipment replacement cycle is mostly around 3 years. In general hardware processing scenarios, however, some machine models can operate stably for more than 5 years with proper maintenance. The wear level of core components such as spindles and guide rails is key to determining the overall machine lifespan. Excessive wear leads to reduced processing accuracy (e.g., positioning errors exceeding 0.05mm), ultimately forcing the equipment into early retirement. 2. Five Core Factors Affecting Service Life (1) Compliance with Operation and Maintenance Standards Core impact: Accounts for 40% of lifespan loss factorsIf operators fail to lubricate guide rails in accordance with procedures (e.g., not regularly adding lithium-based grease) or clean cutting debris in a timely manner (iron chip accumulation causing lead screw jamming), mechanical component wear will accelerate. For instance, when spindle bearings lack oil, the operating temperature can rise sharply by 30°C, shortening the bearing lifespan by more than 50%. It is recommended to establish an Equipment Daily Inspection Checklist that specifies operational processes for daily cleaning, weekly lubrication, and monthly precision calibration. (2) Adaptability to Operating Environment Core impact: Temperature, humidity, and dust levels are major culpritsHigh-temperature environments (exceeding 40°C) accelerate the aging of control system circuit boards, while high humidity (humidity > 70%) easily causes moisture-induced short circuits in motor windings. In workshops with high dust levels (e.g., when processing cast iron parts), if no dust shields are installed, the monthly wear of guide rail surfaces…

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…

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Working Principle and Process Flow of Hot Melt Drilling Machines
Core Guide to Optimizing High-Speed Tapping Machine Performance: Lubricant Selection and Application
Methods to Extend the Service Life of Automatic Small-Hole Drilling Machines
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?
Maintenance Methods for CNC Drilling Machines

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