Functions, Applications and Efficiency of Four-Axis Stone Engraving Machine

Functions, Applications and Efficiency of Four-Axis Stone Engraving Machine

The four-axis stone engraving machine is a mainstream mid-range model in the field of stone CNC processing. On the basis of the three linear axes (X, Y, Z), it adds one rotating axis (usually A-axis or C-axis). With the core advantages of "multi-dimensional processing, high-precision adaptation, and efficient integration", it breaks through the processing limitations of three-axis models and is widely used in mid-to-high-end customization, special-shaped processing and other scenarios. Its functions, applications and efficiency all focus on the core positioning of "special-shaped processing, precise adaptation, and quality and efficiency improvement", which are detailed as follows.

I. Core Functions

The core functions of the four-axis stone engraving machine focus on planar, three-dimensional and special-shaped processing. Relying on the linkage of three linear axes (X: left and right, Y: front and back, Z: up and down) and one rotating axis, the tool can be tilted 0-90° or 0-180° around the specified axis, breaking the limitation of vertical processing of three-axis tools, and balancing precision, complexity and practicality. The specific functions are as follows:

• Basic Processing Functions (Compatible with Three-Axis): It fully covers the core functions of the three-axis stone engraving machine, and can efficiently complete linear cutting, rectangular cutting and simple special-shaped cutting of stone. It is suitable for various stones such as marble, granite, bluestone and artificial stone, as well as materials such as ceramics and glass. The cutting edge is flat, the chipping rate is controlled at about 1%~1.5%, and the positioning accuracy can reach ±0.02~0.03mm, which is better than the precision performance of three-axis models, meeting the standardized needs of basic processing.

• Special-Shaped and Bevel Processing (Core Advantage): This is the most core functional breakthrough of the four-axis model. Through the linkage of the rotating axis and linear axes, it can complete 45° chamfering, bevel processing, conventional basin hole processing, arc surface processing, etc. It can handle inclined angle processing that cannot be completed by three-axis models, avoiding secondary transfer and secondary processing, and reducing redundant processes. At the same time, it can process complex curved surfaces such as cylindrical surfaces and arc surfaces, effectively solving the problem of "tool connection marks" in traditional processing. The surface roughness can reach Ra0.8μm, and the processing precision is significantly improved.

• Fine Engraving and Three-Dimensional Modeling Processing: It supports intaglio, relief, shallow relief, deep relief and three-dimensional modeling processing of medium complexity. It can accurately restore the three-dimensional sense and details of patterns such as landscapes, flowers and birds, zodiac signs and figures, and can reach high-end finished product effect without secondary polishing. It is compatible with various design software such as Type3, Artcam, Jingdiao and CAD/CAM, and can directly import drawings to realize linkage engraving. It can also complete integrated engraving of special-shaped components such as Roman columns and door casing lines, adapting to mid-to-high-end customization needs.

• Intelligent Auxiliary Processing Functions: It is equipped with automatic leveling, automatic positioning and tool compensation functions, which can correct the unevenness and slope of the stone surface to ensure uniform engraving depth and precise size; it has functions such as power-off resuming engraving, processing time prediction, simulation engraving and intelligent dust collection, avoiding processing interruption and material waste caused by unexpected situations; it adopts a high-rigidity bed and full waterproof and dustproof design. Some models adopt modular design, and core components can be quickly replaced, comprehensively protecting transmission components, improving equipment stability and service life, and reducing maintenance costs.

II. Main Application Fields

Due to its characteristics of multi-dimensional processing capability, high precision and adaptation to mid-to-high-end customization, the four-axis stone engraving machine is mainly used in scenarios such as medium-sized processing factories, mid-to-high-end home decoration and interior decoration, high-quality stele carving, and high-end handicrafts. It covers mid-to-high-end needs of various industries such as home decoration, garden, funeral and handicrafts, and accurately matches customized and refined processing needs. The specific applications are as follows:

• Mid-to-High-End Home Decoration and Architectural Decoration Field: This is its core application field. It is mainly used for processing high-end stone background walls (TV walls, sofa walls), entrance screens, arc door casings, special-shaped skirting lines, countertop basin holes, chamfered components, etc. It can complete complex carving, bevel processing, arc modeling and other processes, adapting to the decoration needs of high-end home decoration and high-quality interior decoration. It can realize personalized customization, has strong dimensional consistency during batch processing, and no gaps during installation. It is especially suitable for the processing of decorative components of landmark buildings and high-end real estate projects.

• High-Quality Funeral and Stele Engraving Field: It is widely used in the processing of high-end tombstones, merit monuments, memorial monuments and memorial sculptures. It can efficiently complete processing procedures such as complex inscriptions, couplets, three-dimensional zodiac signs, dragon-phoenix reliefs and arc stele surfaces. Compared with three-axis models, it can greatly improve the refinement and artistry of stele carving, solving the problem of arc and bevel stele surfaces that cannot be processed by three-axis models. It is suitable for high-end cemeteries and personalized tombstone customization scenarios. One person and one machine can process 3-5 sets of high-quality tombstones a day, with a finished product qualification rate of more than 98%.

• High-End Garden Landscape Field: It is used for processing high-end garden sketches and landscape components, such as arc stone benches, special-shaped stone tables, art flower pots, landscape reliefs, Roman columns, stone railings, Xumi seats, etc. It can batch process standardized special-shaped products, or complete personalized customization according to garden design needs. It is suitable for landscape projects such as high-end parks, villa courtyards and ancient-style buildings, balancing practicality and artistry, and can complete complex component processing without the cooperation of multiple equipment.

• High-End Handicrafts and Cultural and Creative Field: It is used for processing mid-to-high-end stone handicrafts, such as stone ornaments, pendants, art sculptures, arc decorative plates, etc. It can complete complex relief, three-dimensional modeling, curved surface carving and other processes, adapting to the needs of medium-sized handicraft processing factories and high-end cultural and creative stores. It can quickly respond to small-batch and high-difficulty customization needs. The operation threshold is moderate, and operators can be proficient in operation after 3-5 days of training. The finished products have high artistic value and added value.

• Other Mid-to-High-End Processing Fields: It can also be used for stone finishing, special-shaped plate drilling, arc edge grinding, thick plate processing, etc., adapting to the needs of medium-sized processing enterprises and high-end stone processing stores. It can be used as the core equipment for high-end stone processing, realizing integrated full-process processing, reducing subsequent processing procedures and improving overall production efficiency. At the same time, the equipment has stable performance, can adapt to 24-hour continuous processing needs, and is suitable for scenarios with large order volume and high precision requirements.

III. Processing Efficiency

The core efficiency advantage of the four-axis stone engraving machine is "integrated efficiency and precise control". Affected by equipment configuration, stone hardness and processing complexity, there are certain differences in efficiency performance. Overall, it is better than three-axis models (except basic processing scenarios) and is suitable for customized and refined processing. The specific efficiency characteristics and parameters are as follows:

• Core Efficiency Advantages: Adopting four-axis linkage technology, it can realize "one-time clamping and multi-process completion", reducing the time of manual transfer and secondary clamping. Compared with three-axis models, the comprehensive processing efficiency is improved by 25%~30%; the body rigidity is strong (slightly lower than three-axis), the processing process is stable without obvious vibration, and 24-hour continuous processing can be realized, greatly increasing output; the degree of automation is high, and unattended processing can be realized after importing design drawings, reducing manual intervention and labor costs, and reducing secondary processing and rework, further improving comprehensive efficiency.

• Specific Efficiency Parameters: The efficiency of four-axis stone engraving machines with different configurations varies. The idle speed of the conventional servo version is about 30m/min, and the recommended processing speed is 15~20m/min; the idle speed of the high-end servo version can reach 48m/min, the recommended processing speed is 20m/min, the positioning accuracy can reach ±0.02mm, and the resolution is <0.01mm; the spindle speed can reach 24000rpm, and the spindle power is mostly 5.5KW and above, which can efficiently process hard stones; for simple text engraving, dozens of characters can be completed per minute; for standard-sized high-end background walls and high-quality tombstones, 3-5 sets can be processed per day, and 1-2 sets of complex special-shaped components can be processed per day, greatly shortening the construction period.

• Factors Affecting Efficiency: First, stone hardness: the processing efficiency of hard stones such as granite is slightly lower, which requires layered engraving, while the processing speed of soft stones such as marble and bluestone can be improved; second, processing technology: simple cutting and lettering have the highest efficiency, while complex relief and special-shaped curved surface processing have relatively lower efficiency, but still better than the same type of processes of three-axis models; third, equipment configuration: the configuration of high-power spindle, precision guide rails and lead screws, and intelligent control system can improve processing speed and stability, further improving efficiency; fourth, operational proficiency: after operators are familiar with four-axis linkage programming and equipment operation, they can reduce debugging time and improve overall processing efficiency.

• Efficiency Comparison Advantages: Compared with three-axis stone engraving machines, four-axis models have obvious efficiency advantages in special-shaped processing and fine processing scenarios, can reduce secondary processing procedures, and the comprehensive efficiency is significantly improved, with higher processing precision; compared with five-axis stone engraving machines, four-axis models have slightly lower processing freedom and cannot complete full-angle free processing, but the equipment structure is simpler, the failure rate is lower, the maintenance difficulty is small, and the purchase cost is lower. In mid-to-high-end customization scenarios, the comprehensive efficiency and cost performance are more advantageous; compared with traditional manual engraving, the efficiency can be increased by 8-10 times, and the finished product precision and consistency are greatly improved, reducing material waste.

In summary, the four-axis stone engraving machine is characterized by "comprehensive functions, high precision, high-end applications and outstanding efficiency". It is suitable for medium-sized processing enterprises and high-end customization needs, making up for the processing limitations of three-axis models. There is no need to blindly pursue the high freedom of five-axis models. Its balanced processing capacity, cost performance and stability make it the core equipment in mid-to-high-end customization scenarios of the stone processing industry, which can effectively help enterprises improve product added value, expand high-end business scope and achieve quality and efficiency improvement.