Email Us

Machining Inspection Process

A good precision machine shop must have a first-class inspection process and inspection equipment. Here is a brief introduction to Richconn's inspection standards.

I. the scope of application of machined parts inspection standards

This standard applies to the cutting process of the inspection characteristics of the inspection, which, cutting process including CNC turning, CNC milling, grinding, boring, planing, hole processing, broaching and clamping operations and so on. At the same time for the size of the basic principles of inspection, environmental requirements, appearance inspection, linear tolerances and so on have certain provisions.

II. the machined parts inspection standard reference documents

  GB / T 1958-1980 shape and position tolerance test regulations

  GB/T 1957-1981 Smooth limit gauge

  Q/HXB 3000.1 Sampling and inspection guidebook

  Q/HXB 2005.1 Product monitoring and measurement control program

  Q/HXB 2005.15 Control procedure for nonconforming products

sec_ops_cleanroom.jpg

III. Dimensional inspection standards

1, the basic principle: this acceptance method only accepts the size of the acceptance work located in the provisions of the size of the workpiece, for the requirements of the fit, the size of the inspection needs to comply with the Taylor principle, the role of the hole or shaft size is not allowed to exceed the actual size.

2, the principle of minimum deformation: in order to ensure the reliability and accuracy of the measurement results, should try to avoid the influence of various factors, so that the deformation programmed to minimize.

3, the shortest size chain principle: in order to ensure a certain measurement accuracy, the measurement chain should be as short as possible.

4, the principle of closure: in the measurement, if you can meet the conditions of closure, which the sum of the interval deviation is zero, which is called the principle of closure.

5, the basic principle of consent: vehicle benchmarks should be consistent with the design benchmarks, process benchmarks.

IV. the standards of environmental testing

1, temperature: ways to reduce and eliminate temperature-induced errors in the standard temperature of 20 degrees Celsius below the test, so that the gauge and the workpiece material to form a consistent, balanced temperature. At the same time to ensure that the inspection site to avoid direct sunlight, to prevent heat sources such as heating and doors and windows out of the cold air caused by temperature changes.

2, humidity: high humidity has a huge impact on the product. It is easy to cause product rust, moldy instruments and equipment. When the humidity is high, you can use dehumidification equipment to remove water, or the rational use of desiccant. At the same time to ensure that the inspector's dry state.

3, cleanliness: including dust, corrosion and so on are the content of cleanliness. Inspection places need to stay away from dust sources such as grinders. Also way corrosive gases, away from the laboratory, pickling and other work sites.

4, vibration: workbench to be stable, away from large-scale machining equipment and other vibration sources.

V. Appearance inspection

1, inspection method: visual inspection. This is a certain requirement for the inspector's eyesight, the need for inspectors to correct the visual acuity to more than 1.0.

2, inspection distance: workpiece to the eyes of the distance of about 1000px.

3, inspection time: general inspection of an appearance in 4 minutes to 5 minutes.

4, surface defects: the finished surface of the workpiece can not have obvious scratches, injuries, pressure and other traces. Nor can there be obvious knife lines, vibration lines and so on.

Related CNC Machining Services
Related News of CNC Machining
  • What Tool is Best for Cutting Metal?What Tool is Best for Cutting Metal?October 8, 2023Cutting metal is a very common task in metalworking projects and different types of tools may be required for different metals and cutting requirements.view
  • Welding vs. Riveting: Differences, Advantages and DisadvantagesWelding vs. Riveting: Differences, Advantages and DisadvantagesNovember 28, 2023Metal joining is a process of attaching or combining two or more metal pieces or parts together. Metal joining is essential for various industries, such as construction, automotive, aerospace, and manufacturing.view
  • Navigating Internal Turning vs External TurningNavigating Internal Turning vs External TurningNovember 22, 2023Welcome to the world of precision engineering, where every turn counts. As a CNC machining enthusiast, I invite you on a journey to uncover the subtleties between internal turning and external turning - two pivotal techniques shaping the art of machining.view
  • The Purpose and Importance of Metal Surface FinishThe Purpose and Importance of Metal Surface FinishApril 4, 2023Nowadays, metal surface finish technology is applied in many fields, which brings about innovation in metal surface finish and oil stain cleaning technology. Metal surface finish pretreatment is an in...view
  • The Complete Guide to Aerospace Fasteners 2023The Complete Guide to Aerospace Fasteners 2023August 24, 2023The aerospace fastener is an essential part of aerospace equipment which is the core product of modern aviation industry. The main function of air fasteners is to ensure the safety and stability of ai...view
  • Anodized Aluminum: How Much Do You Know?Anodized Aluminum: How Much Do You Know?April 4, 2023Anodized aluminum refers to a layer of dense aluminum oxide plated on the surface of aluminum and aluminum alloy in order to prevent further oxidation, with chemical properties that are the same as th...view
Tel
+86-0755-28025755
Address
1212, Zehua Building, Intersection of Longhua Meilong Road and Donghuanyi Road, Songhe Community, Longhua Street, Longhua District, Shenzhen, GuangDong, China