About the Marking Machine

The marking machine is a measuring device commonly used in industrial production, especially in the field of large workpiece manufacturing.

Marking refers to the process of accurately drawing processing boundaries, reference points, reference lines, etc., on the surface of a workpiece's blank or semi-finished product according to the requirements of the drawings. Clear markings provide an "action guide" for subsequent processing operations. The marking machine is the specialized equipment used to complete this task.

Purpose & Uses of Marking

Marking is an indispensable process in the manufacturing industry, especially in single-piece, small-batch production, or the processing of large workpieces (such as machine tool beds, train frames, ship engine blocks, wind turbine gearbox housings, etc.). Its main uses can be summarized as follows:

Figure 1: Application Site of API Saturn Series Horizontal Arm Measuring Marking Machine

1. Determine machining allowance and allocate materials ("find allowance")

The purpose is to check whether the dimensions, shapes, and positions of the blank parts meet the processing requirements and to reasonably allocate the thickness of the metal layers that need to be cut off from each surface (allowance).

In castings, forgings, and other blank parts, there are often issues such as dimensional errors, deformation, and surface unevenness. Directly machining these parts may lead to situations where one side is excessively cut (wasting man-hours or even resulting in scrapping), while the other side is not cut adequately. Therefore, using a marking machine to perform marking work before machining can help identify these problems in advance.

By measuring, the most protruding point on the surface of the workpiece to be processed is found, and using the allowance of this point as a reference, a uniform processing boundary is marked across the entire surface to ensure that the entire area can be machined and that uneven allowances do not affect the overall processing flow.

Figure 2: Application site of API Saturn series horizontal arm measuring marking machine

2. Providing clear basis for processing

Before the finishing of blank parts, the corresponding marked lines and punch holes drawn by the marking machine serve as a "map" for machine operators and assemblers. By marking the reference centerline, symmetry line, and cross lines for the center positions of various holes on the workpiece, these serve as the basis for clamping positioning and alignment, clearly indicating where milling is needed, where drilling is required, the diameter of the holes, the positions of threaded holes, etc. Subsequent processing according to the marked guidance is clear and improves efficiency.

Figure 3: Application site of API Saturn series horizontal arm measuring marking machine

3. Identifying defects in blanks and timely loss prevention through "borrowing material"

By marking, it is possible to check whether the blank has defects that cannot be remedied through processing, such as sand holes, air pockets, excessively severe crack locations, or serious casting deviations. When local defects or dimensional deviations are found in the blank, the operator can move the reference position of the marking to "borrow" the processing line, cutting off the defective part, or redistributing the limited material allowance, thus saving a blank that might otherwise be scrapped. This is significant when processing large and valuable parts, effectively reducing the scrap rate and saving production costs.

4. Subsequent inspection and correction

After processing is completed, these retained marks can be used as a reference to check whether the dimensions and positional accuracy after processing are correct. Moreover, during the assembly process, these marked lines also serve as important visual references for part alignment and leveling.

API Line Marking Machine Solution

API combines rich technical accumulation with constant attention to the forefront of production, developing the Saturn series of horizontal arm marking machines to provide convenient and optimized solutions for industrial production processes. Based on application focus, API offers the Saturn P, Saturn M, and Saturn E models of horizontal arm measuring marking machines (also known as cantilever measuring marking machines):

Figure 4: Saturn P series horizontal arm measuring marking machine

1. Saturn P horizontal arm measuring marking machine

The Saturn P model measuring marking machine meets the lightweight movement and steering of equipment in the X direction on the grooving platform, with the following features:

√ High IP protection level precision displacement sensors are selected;

√ The column and horizontal arm are made of high-strength lightweight aluminum alloy, treated with natural and artificial aging and anodization, making it lightweight and wear-resistant, ensuring stable operation of the entire machine;

√ Ultra-hard aluminum alloy material better protects the magnetic grating sensor, completely eliminating the occurrence of "magnetic loss";

√ The Y direction uses a central steel support and optimized fine-tuning structure, effectively counteracting the deflection deformation of cantilever-type equipment in the Y direction;

√ The digital display system uses a DC chassis with no external cables, making it convenient and tidy to use.

Figure 5: Saturn M series horizontal arm measuring marking machine

2. Saturn M Horizontal Arm Measuring and Marking Machine

The Saturn M model horizontal arm measuring and marking machine can effectively complete three-dimensional spatial measurement and mapping of complex parts and models, and can also ｒｅｐｌａｃｅ square boxes, marking needles, height gauges, and other tools for marking and inspection. It is especially suitable for multi-directional measurement and marking of oversized covers and complex structural parts in industrial production sites, as well as for modeling and design work in the automotive and motorcycle industries.

In addition to the advantages and features of the Saturn P model mentioned above, the Saturn M also uses machine tool guide rails in the X direction, further enhancing operational stability; it is equipped with multiple types of marking needle assemblies to meet various measurement needs on site.

Figure 6: Saturn E Series Horizontal Arm Measuring and Marking Machine

3. Saturn E Horizontal Arm Measuring and Marking Machine

The Saturn E model horizontal arm measuring and marking machine is designed and manufactured for large travel and more convenient and quick measurement. Its main unit and control system work smoothly and are durable, making it a convenient and applicable large-scale three-coordinate detection and marking device for on-site use. It has the following advantages:

√ Handheld box control is good, with stepless speed regulation and rich function settings;

√ Complete three-axis motion protection function, making the system safer and more reliable;

√ The system integrates a clutch mechanism to meet the needs for electric/manual switching, providing good on-site applicability;

√ High-performance DC servo motors are selected to ensure the system's rapid response.

Summary

In the manufacturing industry, marking is a key inspection and preparatory process that serves as a bridge between "raw materials" and "finishing," playing a core role in planning, inspection, guidance, and loss prevention.

Figure 7: Application of marking machines - Railway locomotive bogie "finding allowance"

The API Saturn series marking machines further elevate traditional marking processes to a new level of digitization, automation, and high precision, providing operators with a more convenient and efficient execution method in modern intelligent manufacturing and quality control, and further offering strong support for reducing scrap rates, improving efficiency, optimizing operational processes, and lowering costs in industrial production.

Figure 8: API brand series of precision measurement products

More expansions

In addition to the horizontal arm marking machine series, API also offers a variety of precision measuring instruments and high-performance sensors independently developed and manufactured by various brands, including: Radian laser tracker, iLT laser tracker, 9D laser radar, Core/Plus/ProGAGE series articulated arm measuring machines, XD Laser six-dimensional laser interferometer, Swivelcheck angle swing inspection instrument, ball bar, SpindleAnalyzer machine tool spindle analyzer, extreme column coordinate measuring machine, Shore hardness tester, RPM-DH robot calibration software, MeasurePro three-dimensional measurement software, etc., providing comprehensive hardware/software solutions in the field of dimensional precision measurement to safeguard production.

Figure 9: API company headquarters building

About API

The API brand was founded by Dr. Kam Lau in 1987 in Rockville, Maryland, USA, and is the inventor of the laser tracker, holding multiple patents in globally leading measurement technologies, making it a leader in the field of precision measurement technology; since its establishment, API has been committed to the research and production of precision measuring instruments and high-performance sensors in the mechanical manufacturing field, with products widely used in advanced manufacturing sectors around the world, and leading in high-precision standards for coordinate measurement and machine tool performance testing.