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In the world of precision machinery manufacturing, every detail matters, and the quality of the components is paramount. Recently, Openex embarked on a project that showcased our commitment to delivering excellence in precision engineering. The project involved the secondary machining of a vacuum chamber, setting it apart from conventional machining processes. The vacuum chamber in question was a 3-ton, high-value welded structural part for a precision machinery manufacturer, and it posed a set of challenges that required exceptional machining expertise.

vacuum chamber machining

Complex Precision Requirements

The vacuum chamber machining presented a unique set of precision requirements. To ensure that the chamber met the strict quality standards of the precision machinery manufacturer, Openex had to achieve precision in various aspects:

  1. Verticality: The vacuum chamber required precise verticality, with an accuracy requirement of 0.1mm. This aspect was crucial to ensure that the chamber's dimensions were perfectly aligned.
  2. Flatness: Achieving a flatness accuracy of 0.1mm was another significant challenge. The chamber's flat surfaces needed to be perfectly level to ensure proper functionality.
  3. Hole Margin: Maintaining a hole margin accuracy of ±0.1mm was essential for the chamber's structural integrity and compatibility with other components.
  4. Molding: The chamber needed to be molded precisely, without any imperfections or irregularities.

vacuum chambers machining

Skilled Workforce

Recognizing the unique challenges posed by this project, Openex took the proactive step of assembling a specialized team. This team comprised individuals with over 7 or 8 years of relevant work experience in precision machining. Their expertise was essential for ensuring the safe use of the attachment head and, more importantly, for maintaining control over the chamber's overall dimensional accuracy.

Project Progress

The machining of the vacuum chamber was an intricate process, and the first piece alone took 4.5 days to process. However, this timeframe is expected to improve significantly as the team becomes more proficient and attuned to the nuances of this complex machining task. The gradual increase in processing efficiency showcases the dedication and expertise of the Openex team.

Machine Selection: Mitsubishi MVR40

To undertake the secondary machining of the vacuum chamber, Openex selected the Mitsubishi MVR40 machine tool. The Mitsubishi MVR40 is a versatile, high-precision machining center known for its reliability and flexibility. It is equipped with an array of features that make it well-suited to a wide range of applications.

welded structural parts machining

Key Features of the Mitsubishi MVR40

  1. Large Machining Stroke: The Mitsubishi MVR40 boasts a substantial machining stroke of 6200 × 4000 × 700 × 1100 (mm). This generous work envelope allows it to accommodate a variety of workpieces with complex geometries.
  2. High Accuracy: The MVR40 is engineered to deliver high accuracy and repeatability, which is crucial for machining intricate and demanding components. Its precision control system ensures that the machined parts meet strict tolerance requirements.
  3. Rigidity and Stability: The machine's robust construction and advanced damping technology ensure excellent stability during machining, reducing vibration and enhancing surface finish quality.
  4. Multi-Axis Capability: The MVR40 features multi-axis functionality, making it suitable for complex 3D machining operations. It can efficiently handle tasks such as milling planes and machining dovetail grooves.
  5. Tool Changer: Equipped with an automatic tool changer, the MVR40 streamlines the machining process by swiftly switching between different cutting tools, reducing downtime and increasing productivity.

Suitability for Precision Machining

The Mitsubishi MVR40 is particularly well-suited for machining pieces with demanding precision requirements and complex geometries. It is the ideal choice for components like the vacuum chamber Openex undertook to machine. The machine's large work envelope and multi-axis capabilities allow it to handle intricate parts that require precision in various dimensions.

The MVR40 is commonly used for machining various types of components, including but not limited to:

  1. Aerospace Components: Its precision and rigidity make it suitable for machining aerospace components with tight tolerances.
  2. Large Automotive Parts: The machine's large work envelope can accommodate sizeable automotive components, such as engine blocks and transmission housings.
  3. Dies and Molds: Its ability to handle 3D machining operations makes it a valuable tool for manufacturing dies and molds with intricate features.
  4. High-Value Structural Parts: As demonstrated in Openex's project, the Mitsubishi MVR40 is an excellent choice for machining high-value structural parts, especially when precise verticality, flatness, and hole margins are critical.

More about our equipment capabilities please visit our equipment list.

Ready to Elevate Your Precision Machining?

If you're looking to achieve outstanding precision and quality in your machining projects, consider us and experience the difference we can make. Contact us at sales3@openex.com.cn today to explore how Openex can assist you in reaching new levels of precision and efficiency in your manufacturing processes.

About Openex

Openex is home to a full-service, one-stop-shop, contract manufacturing company producing custom large machined parts and fabrications. Our full large fabrication services including large machining, cutting, welding, rolling, punching, braking, testing, painting, and others.
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