FAQ List

Taking Hangcha Group as an example, the PMT Portable CMM delivers breakthrough by the following advantages:
In-Place Measurement: The measuring arm can be installed directly on the shop floor, enabling part inspection without relocation, eliminating time loss and safety risks from repeated handling.
Exceptional Flexibility: With its multi-axis design, the arm adjusts freely to access hard-to-reach features such as deep holes and internal cavities, ensuring complete and accurate data capture.
Efficient On-Site Workflow: By integrating precision measurement directly into production, inspection cycles are shortened, and quality control becomes seamlessly coordinated with manufacturing.
This solution has significantly improved inspection efficiency for customers while greatly reducing costs related to part transportation and measurement delays.

Using high-precision portable and fixed CMMs, combined with custom fixtures and standardized processes, PMT delivers:
Rapid Inspection: Improve the inspection efficiency of complex parts like pump valves and agricultural machinery frames.
Data Traceability: Generate inspection reports to pinpoint deviations and drive process optimization.
Quality Control: Ensure stable quality control process throughout the entire production line.

Both of PMT portable CMMs and fixed CMMs provide comprehensive precision measurement solutions for key components in engineering machinery, primarily covering:
Core Parts: GD&T inspection of hydraulic valve blocks and pump housings.
Transmission Components: Dimensional and shape analysis of gearbox gears and engine connecting rods.
Structural Mechanisms: Welding and assembly accuracy control for chassis frames and excavator arms.
By delivering accurate and reliable data, PMT Arm enables continuous product quality improvement and supports optimized manufacturing processes.

PMT Coordinate Measuring Machines provide professional measurement solutions for screw pumps in the engineering machinery industry.
The performance of a screw pump (also known as a water screw) is highly dependent on the manufacturing precision of its core parts. Critical dimensions, including its outer diameter, pitch, and lead, must be controlled within micrometer-level tolerances (typically ±0.01 to ±0.05 mm). In addition, the meshing clearance between screws must remain uniform (generally between 0.05 mm and 0.15 mm). Inadequate precision can lead to issues such as fluid leakage, reduced efficiency, and increased vibration or noise. To address these high-precision requirements, PMT offers a professional solution with the PRIME Bridge CMM.
Recommended Configuration:
Measurement Range: 800 × 1000 × 600 mm
Probe: MH20i
Stylus: D4*L20
Measurement Workflow:
Import the CAD model
Establish the coordinate system
Perform section scanning to ensure accuracy
Core Advantages:
Meet micrometer-level tolerance requirements for screw pumps;
Provide one-stop service from equipment selection to measurement solution design.
The PMT PRIME CMM delivers a reliable measurement solution widely used in the screw pump industry. By implementing PMT CMMs, enterprises can continuously improve product quality and enhance production efficiency.

PMT portable CMMs serve a wide range of companies across the engineering machinery industry, building a collaborative ecosystem that spans the entire industrial chain.
Our partners include leading machinery manufacturers such as LiuGong and Zoomlion, core component suppliers like Yuchai, as well as specialized innovators including Hangcha Group and Wuhan RoNice. By delivering precise measurement solutions, PMT supports these industry leaders in enhancing product quality and advancing technological innovation, working together to shape the future of intelligent machinery manufacturing.

Take the inspection of sheet metal molds at an automotive parts manufacturer as an example. By combining the PMT portable measuring arm with 3D measurement software, it successfully balances all three aspects in real-world applications:
Reliable Accuracy: Establishe a coordinate system using the 3-2-1 method, enabling real-time inspection and analysis of shape, position, and other deviations to ensure traceable and trustworthy results.
Improved Efficiency: The measuring arm performs on-site measurement directly on large molds in the production area, eliminating the need for relocation and repeated clamping.
Optimized Cost: The investment is far lower than that of large fixed CMMs. In addition, human-machine collaboration reduces reliance on specialized environments and operators, effectively lowering the overall cost of quality.
In summary, for automotive sheet metal inspection, the PMT Arm not only ensures part accuracy but also significantly shortens debugging cycles and reduces operational costs, demonstrating its comprehensive value in industrial scenarios.

In industrial metrology systems such as measuring arms, both contact and non-contact methods play essential roles. The choice depends on your specific application needs.
For routine inspection of new energy vehicle battery cases, a measuring arm with contact probing is typically sufficient. It enables GD&T inspection of features like hole positions or module installation parallelism, allowing real-time error adjustment.
When dealing with special-shaped workpieces, combining contact measurement and scanning delivers synergistic benefits. Take the inspection of a car dashboard assembly as an example: it requires both high accuracy for narrow location holes and precise surface alignment. The PMT ScanArm efficiently meets these demands, particularly in critical transition zones such as between the instrument panel and windshield. This integrated approach simplifies the traditional three-step clamping process into a single setup, achieving a data completeness rate of over 99%.
With the ability to rapidly switch between contact measurement and non-contact scanning, the PMT portable measuring arm enables accurate verification of functional holes and analysis of assembly gaps between trims and base structure, delivering a flexible, efficient, and reliable precision inspection solution that meets the demands of smart automotive manufacturing.

Yes. PMT portable measuring arms are used by nearly all major automotive brands and component manufacturers, including BYD, FAW, SAIC, GAC, Changan, Geely, JAC, Dongfeng, GWM, Sinotruk, BorgWarner, and Jin Rui Tai.
In a project with Changan Automotive focused on stamping quality control, PMT’s high-precision ALPHA portable measuring arm enables a closed-loop inspection process:
1.Establish Coordinate System: Check platform flatness and establish a coordinate system to align measured data with design specifications.
2.Data Acquisition: Collect measurement points from positioning holes, flush surfaces, and gaps of sheet metal parts.
3.Deviation Analysis: Compare real-time measurement data against CAD models to identify and correct dimensional deviations.
4.Report Generation: Generate PDF inspection reports with archived data for full traceability of quality issues.
This solution provides integrated inspection of gauges and parts, improves quality control and prevents batch defects, building a reliable quality control process for Changan and showcasing PMT’s ability to turn precision measurement into a core competitive advantage for clients.

PMT Arm offers highly flexible measurement capabilities for complex scenarios. Key applications include:
1.Reverse Engineering
The PMT ScanArm captures data from clay models or physical samples without surface markers, rapidly generating point clouds and 3D models to accelerate design cycles. In a recent vehicle development project, this technology enabled complete 3D modeling within two weeks, achieving 40% time savings compared to conventional methods.
2.Molds and Production Tools Inspection
The PMT Arm enables regular inspection of molds and production tools to analyze wear patterns, facilitating timely maintenance or replacement. For example, an auto parts manufacturer utilized the PMT Alpha Arm for periodic mold checks, detecting and fixing wear early to prevent production downtime and associated costs.
3.CAD Model Comparison
The PMT Arm ensures part accuracy through 3D measurement and CAD comparison. By analyzing deviations between measured and nominal data, it identifies dimensional deviations. In one case, the arm detected batch deviations in critical components, enabling immediate corrections and preventing mass production of substandard parts.
4.Tool Alignment
We can make adjustments to the assembly position according to the obtained accurate data of the auto parts to ensure dimensional quality. For example, on the assembly line of a high-end model, the application of the PMT Arm has improved the assembly accuracy by 20%, significantly enhancing product quality and customer satisfaction.
5.Fixture&Gauge Inspection
The PMT Arm enables regular inspection and real-time adjustment of fixtures and gauges for irregular or high-volume auto parts, ensuring positioning accuracy. In one production line, the PMT ALPHA Arm reduced fixture-related failures by 30%, significantly improving measurement efficiency and car body accuracy.
6.Car Body Measurement
The PMT ALPHA Arm delivers precise dimensional inspection throughout automotive manufacturing and assembly processes. Prior to mass production of a new model, comprehensive body measurement with the ALPHA Arm verified dimensional consistency across initial production units, establishing critical foundations for subsequent mass production.
7.Exhaust Pipe Measurement
The PMT Arm performs 3D inspection of exhaust pipe components to ensure dimensional precision. In one project, its implementation increased product qualification rates from 85% to 98%, significantly reducing rework and scrap.
8.Thin-walled Parts Measurement
The PMT Arm ensures dimensional accuracy of thin-walled parts for precise assembly. In a thin-walled parts production project, the PMT ALPHA Arm improved product assembly accuracy by over 15%, effectively solving the assembly problem caused by dimensional deviations.
9.New Energy Battery Cases Measurement
The PMT Arm performs shape and position measurements on battery cases to guarantee material and processing quality, enabling process optimization for final assembly. In one NEV battery case production process, the PMT ALPHA Arm ensured dimensional and geometric precision, providing critical safeguards for battery safety and performance.

Have specific inspection needs beyond these? PMT is ready to provide customized solutions for you.

PMT’s partnership network spans the entire automotive supply chain, encompassing industry leaders such as BYD, FAW, SAIC, GAC, Changan, Geely, JAC, Dongfeng, GWM, Sinotruk, BorgWarner, and Jin Rui Tai.

In manufacturing and assembly, precise measurement solutions ensure components meet design specifications. Tools like CMMs and portable measurement arms verify dimensions, alignment, and tolerances, ensuring quality control and efficiency during production and assembly processes.

Engineering machinery measurement solutions include tools like CMMs, laser scanners, and portable measurement arms to assess critical machine components. These solutions ensure precise measurements of dimensions, alignment, and geometric tolerances, improving manufacturing accuracy and efficiency.