Chengxin Machinery: From Traditional Production to Intelligent Manufacturing

Located in Guangxi, China, Chengxin Machinery (formerly a state-owned enterprise) has been part of the Yuchai Group for over 60 years. The company specializes in high-precision components such as diesel engine connecting rods, gear covers, and key internal combustion parts.

In recent years, Chengxin has moved beyond traditional machining and entered the field of industrial robot integration, marking a major step toward intelligent manufacturing. However, with this transformation came a familiar challenge—how to maintain high quality while increasing efficiency and controlling costs.

The Challenge: Assembly Misalignment in Robotic Components

During the assembly of robotic parts, Chengxin’s inspection team discovered a recurring issue: some of the robot’s second-axis rotating bases (turntables) were difficult to align with positioning pins, and a few connecting bolts tended to loosen after installation.

To find the root cause, the team needed to verify whether key machining dimensions of the second-axis turntable were within tolerance limits. Precise measurement was essential to understand the misalignment and optimize the process.

It became clear that a highly accurate, stable, and efficient coordinate measuring machine (CMM) was required. After thorough evaluation, Chengxin decided to acquire one through a public tender.

Why Chengxin Chose PMT

Among several international and domestic competitors, PMT’s FUTURE PLUS 1587 CMM stood out after a detailed technical comparison and on-site testing. The decision was driven by four key strengths:

1. Higher and More Stable Accuracy

The FUTURE PLUS series uses advanced photoelectric scales and a precision transmission system to achieve micron-level accuracy. It met Chengxin’s strict requirements, including:

• Measurement accuracy within 2.1 + 3.3L/1000 μm
• Scanning error less than 3.5 μm
• GN evaluation and offline programming support

2. Excellent Cost Performance

PMT’s independently developed precision assembly technology delivers European-level quality at a highly competitive price, offering the perfect balance between performance and investment.

3.Reliable After-Sales Service

With a strong service network and rapid response capability, PMT ensures that Chengxin receives timely technical support and continuous operation stability throughout the product’s lifecycle.

4.Secure and Controllable Technology

Unlike many imported systems, PMT provides domestically developed measurement software and control systems, ensuring full data security and system independence—an important factor for companies with global strategies.

The Solution in Action: Measuring the Robot’s Second-Axis Turntable

Using the FUTURE PLUS 1587, Chengxin engineers conducted a complete inspection of the turntable’s geometric features. Key dimensions such as flatness, perpendicularity, concentricity, and distance between holes were measured with micron-level precision.

The setup included:

• Hardware: FUTURE PLUS 1587 (800 × 1500 × 700 mm measuring range)
• Software: Metrolog X4 + PMT Inspect
• Control System: Renishaw UCC S3 Kit
• Probe System: Renishaw PH10M with SP25 scanning probe

The machine’s flexible probe combinations allowed the team to measure deep holes and complex surfaces that were previously difficult to reach. With automatic scanning and software-based evaluation, Chengxin obtained a complete data map of the part’s accuracy.

Results: Data-Driven Quality and Process Optimization

Once the PMT CMM was fully integrated into Chengxin’s inspection process, the benefits were immediate. The precise measurement data helped engineers identify the root cause of assembly misalignment, optimize machining parameters, and improve process stability.

Beyond the robot turntable, the FUTURE PLUS 1587 has since been applied to other projects, such as MTU main bearing caps, marine cylinder heads, and connecting rods. The consistent accuracy and traceability have strengthened Chengxin’s overall quality control and production efficiency.

Building the Future of Precision Manufacturing

The collaboration between Chengxin Machinery and PMT represents more than a single equipment upgrade—it’s a shift toward data-driven, intelligent manufacturing. With PMT’s advanced CMM technology, Chengxin continues to set higher standards for precision, reliability, and innovation in the machinery industry.

PMT is committed to empowering manufacturers worldwide with high-precision metrology solutions.
Whether you’re optimizing machining processes or ensuring product consistency, PMT helps you measure with confidence and manufacture with precision.

Learn more about PMT’s CMM solutions and discover how we can help your business achieve smarter, more reliable production.

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1. From “Problem Solving” to “Problem Prevention”

PMT’s 3D measurement solutions are trusted by leading enterprises across various industries worldwide. By analyzing thousands of cases, we’ve shifted our technical support model from reactive problem-solving to proactive problem prevention. This change minimizes device downtime and maximizes customer satisfaction.

Key Upgrades:

• Service Lifecycle Records: Each PMT device now comes with a complete digital service record, covering delivery, installation, training, maintenance, and repairs. These records are accessible at any time, ensuring full transparency.
• Cross-Department Collaboration: We have integrated technical support, customer service, and maintenance teams to deliver a seamless customer experience, achieving a 100% response rate.

2. A Breakdown of the After-Sales Process

• Technical Follow-Up Support: After training, customers receive an additional 3 months of follow-up support from PMT technical engineers.
• Continuous Support Tracking: After training, we conduct follow-up calls to ensure key concepts are fully understood, reinforce technical skills, and help optimize internal management at our site.
• Diversified Support Channels: PMT offers support via WhatsApp for real-time assistance.

Global: +86-1529 5618 055, Americas: +86-1996 2688 013, Europe: +86-1732 7757 762

Asia-Pacific: +86-1996 2688 013, Africa: +86-1732 7757 762

• Regular Training Course: PMT regularly organizes specialized courses, such as “Advanced 3D Measurement Technology,” to support continuous skill development for international customers and partners.
• Multi-Channel Repair Requests: Customers can submit repair requests through our official website (www.krhmd.cn), email us at info@pmt3d.com, or contact our WhatsApp after-sales hotline at +86 1377 1790 343.
• Emergency Support: For complex issues, our technical team activates an emergency response plan, providing continuous follow-up until the issue is fully resolved.

3. How We Ensure Your Core Needs Are Met?

PMT offers personalized “one-on-one” support channels. Should you encounter any issues, visit www.krhmd.cn to find relevant contact information and submit a message. For suggestions, requests, or collaboration opportunities, please use the “About Us – President’s Mailbox” section on our website. PMT is committed to responding within three working days to ensure your concerns are addressed in full.

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In-depth Visit

Guided by PMT technical team, our partners visited the cutting-edge production facilities, exhibition hall, and calibration & maintenance room, gaining a comprehensive understanding of PMT’s entire product line from manufacturing to after-sales service.

Technical Exchange

The Bilgino?lu team focused on exploring the core capabilities of PMT’s portable coordinate measuring machine:

? High-precision hardness testing
? Efficient and rapid scanning
? 90° elevated scanning

Valuable Feedback

Mr. Ismail, the CEO of Bilgino?lu remarked, “The high accuracy and stability of PMT’s measuring arm are truly impressive, I’m confident we will deepen our cooperation with PMT.”

PMT remains committed to its core values of “Customer First, Full Commitment and Sustainable Innovation,” continuously striving to provide more precise and intelligent measurement solutions for global customers. Currently, PMT is actively expanding its partnerships and looking forward to collaborating with more partners to advance together in the global industrial precision measurement.

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On May 9, 2025, at the Control Show in Stuttgart, Germany – PMT Technologies unveiled its latest products: the next-generation GAMMA Series PMT measuring arm (featuring the new blue laser scanner and 8-axis rotary worktable), the FUTURE PMT CMM machine, the PRIME PMT coordinate measuring machine, and the PMT Inspect 3D measurement software, marking a new chapter in industrial metrology field.

CMM’s Global? Stage: From China to the World

As one of the world’s largest and most professional measurement instrument exhibitions, Control Show serves as a “bellwether” for industry trends. PMT’s products cover the entire industrial measurement field, from PMT portable coordinate measuring machines (adaptable to diverse environments) to high-precision PMT CMM equipment (micron-level accuracy), and multi-scenario 3D industrial software solutions, captivating international guests.

• Flagship Product: GAMMA PMT Measuring Arm

Debuting at the global exhibition, the PMT GAMMA Series portable CMM machine redefined industry standards. With the world’s first external decoupling and internal balancing system, the GAMMA PMT portable coordinate measuring arm combines precision and portability, enabling effortless operation, high stability, lightweight, and affordable maintenance.

Both 6-axis and 7-axis PMT portable CMM systems can work seamlessly with an 8-axis rotary worktable (full rotational axis), allowing users to perform full scope measurements on workpieces in fixed positions without complex setup. Compared to standard 6-axis and 7-axis systems, the GAMMA portable CMM with an 8-axis rotary worktable not only measures hard-to-reach spots but also increases scanning efficiency by over 40%, greatly reducing inspection time and human error, solidifying PMT’s leadership in precision measurement field.

• Another Highlight: PMT Inspect Measurement Software for CMM

PMT’s self-developed PMT Inspect 3D measurement software, paired with the GAMMA PMT measuring arm, demonstrated real-time capture of precise data in any environment. PMT Inspect ’s core algorithms hold PTB certification from Germany’s National Metrology Institute, ensuring reliability. The PMT Inspect software enables real-time adjustments for dimensional control, while its automated workflows streamline inspection tasks in production process.

Visitors at PMT’s booth had chance to experience the PMT Inspect firsthand. An Italian guest completed 3-step operations – model alignment, automatic comparison, and report generation – in minutes, earning acclaim for the software’s user-friendly functionality.

• Explore More：PMT FUTURE CMM

The FUTURE PMT CMM measurement machine drew significant attention for its excellent industrial design and dynamic performance. PMT representatives engaged with guests to discuss advanced applications, demonstrate high-speed measurement, ultra-precise detection, and full-digitization.

By merging machine vision, contact measurement, and optical scanning, PMT transcends product competition, focusing instead on comprehensive solutions for different measurement scenarios.

• Future Plans for Global Collaboration

PMT’s distributors from Germany, the UK, Italy, the Czech Republic, Belgium, the U.S., Austria, and Mexico gathered together at the show, responding swiftly to global clients and winning mutual trust.

Keith Mills, head of Europe’s authoritative metrology media Metrology News, conducted an in-depth dialogue with PMT founder Tom on the “European Expansion Strategy”, highlighting PMT’s commitment to global collaboration.

CMM and Portable CMM: The Path for Localized Innovation

PMT’s outstanding performance at the Control Show reflects its global strategy: leveraging core technologies to build an integrated worldwide system. As the journey continues from Stuttgart, PMT remains dedicated to adding fresh impetus to strengthen the industrial measurement field.

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Live Lesson Battles: Where Teaching Meets Competition

The PMT potable coordinate measuring machine has become the star “teaching tool” of the event on accounts of its standout feature of “on-site measurement anytime and anywhere”. Professor Ma from the Mechanical Engineering School highlighted, “As quality inspectors, we must uphold a quality-first mindset to ensure precise measurements.” Students were divided into four teams at random, igniting a hands-on technical competition using the PMT portable CMM.

Practical Challenge: Coaxiality Measurement of Drive Wheel Axles

The event highlighted a key challenge: coaxiality measurement of drive wheel axles. Moving beyond traditional methods, Professor Ma guided students in using PMT’s portable CMM paired with PMT’s self-developed PMT Inspect software. Each team had 30 minutes for hands-on practice, performing GD&T analysis on workpieces by using of PMT portable measuring arm. The PMT Inspect software displayed a remarkable deviation of just 0.01mm—far exceeding the required 0.034mm repeat positioning accuracy. With unmatched efficiency and data reliability, the PMT measuring arm delivered outstanding performance, leaving a lasting impression on all participants.

A Model of Industry-Education Integration: Collaborative Talent Development

PMT’s CMM arms are now widely adopted in top Chinese institutions. To advance the national initiative for precision measurement talent development, PMT is partnering with universities and vocational schools to establish applied colleges and build integrated training platforms—combining high-precision measuring arm with intelligent software solution.

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Dear Valued Partners & Industry Colleagues,??

We are delighted to announce that PMT will attend the 37th Control, the world’s leading trade fair for quality assurance from?06 to 09 May 2025, in Stuttgart, Germany. PMT will participate in the expo for the third time this year. Under the theme “Precision Manufacturing, High Reliability and Quality Assurance”, PMT will showcase a range of core products with top-notch, high-precision, and high-efficient measurement technologies at this grand event.

Messe Stuttgart

Hall 3 | Booth 3109

06. – 09. May 2025

		Portable CMM (Measuring Arm) Premier Launch of Core Products：you will explore the distinctive advantages of our latest GAMMA Portable Arm and experience the unique charm of portable measurement technology. Know in Advance
		CMM?(Coordinate Measuring Machine) Industry-Specific Solutions: PMT Bridge CMM FUTURE & PRIME will be showcased at Control, we will expected On-site technical consultations and customized service plan discussions with you. Know in Advance

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Exhibition in Review

During the event, PMT’s new GAMMA portable CMM made its debut in the Korean market. Featuring a revolutionary external decoupling and internal balancing system, PMT’s articulated arm CMM GAMMA showed its unparalleled performance, captivating international audience at the trade show.

Lim, PMT’s Business Representative in Korea, and Michael, Application Engineer, conducted live demonstrations and technical exchanges at the booth, showcasing the core advantages of the GAMMA portable coordinate measuring machine in high precision, efficiency, and portability. In addition, PMT’s Korean strategic partners came to support actively, having deep discussions with local clients and further solidifying the brand image as well as customer relationships in the region.

The Market is Driven by Innovation.

The showcase of the GAMMA portable measuring arm not only reinforces the leadership of PMT’s technologies in portable measuring arm, but also lays a robust foundation for its business in the Korean market.

Under the vision of committing to technological innovation with concerted efforts, PMT is expanding its global market through international exhibitions, industrial collaboration, talent development, and resource allocation. By accelerating research, development and product upgrade, PMT continues to work with industrial leaders worldwide to make breakthroughs in precision measurement technologies.

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Dear friends from all sectors,

PMT will participate in the biennial INTERMOLD EXHIBITION at KINTEX, South Korea, from March 11-14, 2025. The Seoul Mold Exhibition in Korea is one of the largest and most authoritative mold events in Asia, with exhibitors from China, Japan, Dubai, India, Russia, Spain, Singapore, Italy, and more, attracting 89,910 visitors. During this event, PMT will focus on the mold industry, showcasing our new products, case studies, and innovative achievements. We look forward to joining you at this grand gathering of the mold industry!

Progress

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The Strategic Value

By combining PMT’s advanced measurement hardware, including articulated arms, coordinate measuring machines(CMMs), and laser scanner, with the powerful capabilities of the PolyWorks|Inspector? and PolyWorks|Modeler? software solutions, manufacturers will achieve unparalleled efficiency and accuracy when performing 3D metrology processes. This streamlined solution will simplify their workflow from data acquisition to in-depth analysis. It will enable businesses to address diverse measurement needs across their organizations, resulting in enhanced product quality, improved manufacturing efficiency, and optimized operational performance.

Key Benefits Include:

– Technological Synergy: Seamless integration of PMT’s high-precision hardware with PolyWorks software creates a closed-loop system for measurement, analysis, and data correction.

– Enhanced Efficiency: The auto-reporting and real-time deviation visualization of PolyWorks reduce measurement cycle by up to 40%.

– Industry Impact: The joint solution supports full-scale inspection for industries such as automotive, aerospace, defense, and energy equipment – from precision components to large-scale assemblies.

Tom Tai, Founder and CEO of PMT

“The partnership provides tremendous value for the manufacturing industries,” mentions Tom Tai, Founder and CEO of PMT. “By combining our 3D measurement technologies with PolyWorks’ capabilities, we will empower our customers to achieve higher productivity, ensuring their operations stay competitive in today’s fast-paced market.”

Abdul Aziz Saleem, Vice-President of Sales, APAC, at InnovMetric

“This collaboration with PMT reaffirms our dedication to delivering universal and innovative solutions that promote collaboration and drive manufacturing excellence,” says Abdul Aziz Saleem, Vice-President of Sales, APAC, at InnovMetric.

PMT’s Commitment to Innovation

As a national high-tech enterprise in 3D measurement industry, PMT combines European craftsmanship standards with a robust R&D team, a high-quality supply chain, and dedicated technical support. PMT continues to prioritize product excellence while driving digital and standardized management across R&D, production, and assembly processes. PMT’s ongoing investments in innovation aim to optimize operational efficiency and establish PMT as a central hub for precision industrial solutions spanning design, manufacturing, and inspection.

About InnovMetric

InnovMetric is an independent software development company that empowers manufacturers of every size to digitally transform their 3D measurement processes. InnovMetric has revolutionized 3D metrology with the introduction of point-cloud-based dimensional inspection in 2000 and the concept of a universal 3D metrology software platform in 2006. Today, with over 23,000 customers in 100 countries, and the world’s largest industrial manufacturers having adopted its PolyWorks? solutions as their standard 3D metrology software platform, InnovMetric is focusing on creating next-generation digital data and process management technologies.

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Measureing? Challenges

• When measuring the wall thickness of small-sized sheet metal square tubing, traditional measuring tools often fail to meet the required precision, and human errors easily occur.
• Traditional methods only provide static data and are unable to monitor the changes of the fitting sizes in real-time or detect quality issues during the production process.

Recommended Solution

1） Measurement Principle

When measuring square tubing, the operator needs to hold the portable arm and touch the probe on the surface of the measured target. By rotating and moving the elbow, the arm is able to collect coordinate data from different positions on the tubing. Then, the data will be transmitted to the control system and processed and analyzed by the software. Finally we get the required dimensions, shapes, and positions of the tubing.

2） Measurement Steps

• Establish the Coordinate System

① Compare the workpiece with the drawings. Analyze the drawing requirements and relations between each dimension, and identify the features on the workpiece. Use the measuring arm to detect the relevant feature elements.

② Import the CAD model. After importing the CAD model, the PMT engineer will delete unnecessary components (such as cylinders, connecting blocks, valve islands, brackets, screws, etc.) according to the requirements of the CAD model, and retain the modules that need to be inspected.

③ Establish the coordinate system (usually using methods such as the center point of the plane axis, iteration, etc.). Align the measured data with the nominal data to establish the positional relationship between the measuring arm and the workpiece. This will facilitate the next steps.

• Data Acquisition

Contact measurement with the portable measuring arm: The engineer will collect data by touching the surface of the workpiece with the ball probe of the arm and use the least squares method to best-fit the measured data parameters.

• Data Analysis

Based on the technical requirements, we can analyze the position of holes and surfaces. In the measurement system, the shape deviations, position and other parameters of the measured object can be evaluated, and the key dimensions can be marked.

• Report Generation

Generate a report based on the measurement results. The report should include basic information about the measured object, parameters, results, error analysis, and other relevant content.

• Feedback of Results

Send the measurement results to relevant departments so the company can facilitate subsequent production, processing, and quality control activities.

• Batch Inspection

Since sheet metal components are often mass-produced, it is common to conduct random sampling or batch inspection of the same product. In such cases, the creation of new workpiece command in the software can be used for repeated inspections, with no need for data editing or processing, greatly improving measurement efficiency.

Advantages of the Portable Measuring Arm in Pipe Fitting Inspection

① High Precision

The PMT portable arm employs advanced angle encoder technology, enabling high-precision measurements that meet the requirements of most industrial production and quality inspection processes.

② High Efficiency

Compared to traditional methods, the PMT measuring arm is easy to install and calibrate. Operators can quickly learn how to use the machine, an process and analyze the data through the software, reducing the workload associated with manual calculations and data handling, thereby increasing work efficiency.

③ Strong Flexibility

The PMT portable measuring arm can rotate and move flexibly, adapting to the measurement needs of square tubing of various shapes and sizes. It can also be used in complex environments.

Other Applications

In industries such as mechanical manufacturing, automotive manufacturing, and aerospace, square tubing is widely used in the production of various structural components. For large square tubing structures, such as steel structures in construction or bridge structures, the PMT measuring arm is able to perform rapid on-site inspection to ensure construction quality control.

During the research and development of square tubing, the PMT portable arm can provide precise measurements of samples to optimize the design process. It can also compare different schemes and select the optimal design for customers.

Conclusion

The PMT portable measuring arm is the ideal tool for measuring sheet metal square tubing. With its high precision, high efficiency, and strong adaptability, it meets the high demands of industrial manufacturing, provides reliable quality assurance, and plays an important role in the research and development stage, showing great value across different industries.

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Price war has become the norm since the rapid development of the market will inevitably bring fierce competition. However, the market has proved that car companies have been raising their competitiveness, and the trend has shifted from low-priced competition to applications of cutting-edge technologies, exceptional performance of products, and branding development. This will help reshape the industry.

3D measurement technology has been playing an increasingly important role in modern manufacturing. It can provide high-precision measurements for different sizes and shapes, which is of great significance for improving product quality and production efficiency. As an advanced 3D geometric measurement system, PMT ALPHA has a built-in counterbalance system which is specially designed for on-site inspection. The structure of the equipment is simple and balanced, thanks to its perfect equal arm length design, which delivers an outstanding arm-operating experience. PMT portable arm is compatible with many measurement software and widely used in manufacturing industries as follows.

Reverse Engineering

In scanning clay sculptures or similar kinds, the Alpha M ScanArm can quickly model with its collected data without pasting marking points, which greatly shortens the design cycle and thus improves efficiency. Here is an example from a car manufacturer who used reverse engineering to do 3D modeling of a prototype car during the process of creating a new model. It all only took two weeks, saving about 40 percent of the time compared with traditional methods.

Molds and Production Tools Inspection

Use ALPHA Arm to do regular inspection of molds and production tools, and to analyze the wear condition so repairs or replacement could be made. For example, the customer used the PMT Alpha arm on their auto parts production line to inspect the mold on a regular basis. They detected and fixed a slight wear problem in time, helping prevent production delays and cost increases caused by mold damage.

CAD Model Comparison

Using ALPHA Arm to measure 3D coordinates will help ensure the accuracy of auto parts. We can see deviations between the actual workpiece and the CAD model by comparing the measured data with the nominal data. For example, in a process of quality control of key components, the operator used the ALPHA arm to detect dimensional deviations in a batch of components, and feedback was immediately sent to the production department. It effectively helped prevent the customer from producing batches of substandard products.

Tool Alignment

We can make adjustments to the assembly position according to the obtained accurate data of the auto parts so as to make sure the accuracy and quality of the whole process. For example, on the assembly line of a high-end model, the application of the PMT ALPHA arm has improved the assembly accuracy by 20 percent, significantly enhancing the quality of the vehicle and customer satisfaction.

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