Quality Control From FRIMA CNC Machining

Quality control is carried out at all stages of FRIMA CNC machining. We strictly follow IATF 16949 & ISO 9001 control guides as our quality lines. Manufacturers choose CNC machining because it offers several advantages. Although CNC machining can ensure higher productivity and fewer errors than traditional machining, quality inspection is still an indispensable part of the automotive manufacturing process.

Quality control from FRIMA CNC machining is an important aspect of every industry-whether it is products, parts, processes, tools, or machines. Regardless of the industry, product quality is of paramount importance. In order to meet customer expectations, trade standards, and industry regulations, FRIMA uses different measuring instruments and tools to control the quality of CNC machined parts produced in our machining workshop.

FRIMA Testing-Lab

Quality control from FRIMA CNC machining- control plan outline

General part and supplier information

  • Part number
  • Supplier name and contact information
  • Approval and revision dates

Process steps and support equipment

  • Part / process number – this matches up to steps in the PFMEA and process flow diagram.
  • Process name and description – thoroughly describes what each process step accomplishes.
  • Device reference numbers – lists any special tools or machines used to carry out the process step.

Product and process characteristics

  • Characteristic number – References a unique number of each characteristic being checked.
  • Characteristic of product or process (one or the other)
  • Product characteristic – If the characteristic being checked is on a product then the product box will be filled in with a description (i.e. screw depth).
  • Process characteristic – If the characteristic being checked is of a process then the process box will be filled in with a description (i.e. drive screw at a 45-degree angle).
  • Critical to quality (CTQ) feature– box is marked with a Y for yes and N for no if the character is important to quality.

Methods of control

  • Specification and tolerance – note any unique specification and tolerance for each product or process characteristic being checked.
  • Evaluation method –describes measurement technique used to evaluate each characteristic being checked.
  • Sample (only if the evaluation method involves a sample)
  • Sample size – the number of part or process samples taken to check from production (i.e. 5 parts).
  • Sample frequency – the interval at which each sample is being taken (i.e. sample checked hourly).
  • Control method – specifies how control is maintained for each characteristic (i.e. error proofed).
  • Reaction plan – describes the reaction the process monitor if an unexpected condition occurs (i.e. re-inspect all products produced after the last inspection).

Related Read: Implementing APQP, Control Plan and PPAP


Quality control from FRIMA CNC machining is carried out on three levels, as described below:

Machine tool accuracy test

In this mode, check the centering and movement accuracy of the machine tool. Check various other parameters, such as the orientation of the spindle, bracket, axis, etc. The main shaft should be perpendicular to the worktable. The angle and bend of the shaft must be accurate. Check the linear axis.

Part or product test

In this mode, check the size and position of the part. This also includes checking parameters such as positioning, surface finish, and shape. Also, check dimensional and geometric tolerances according to requirements or applications.

Process monitoring and control

This includes checking the process steps at each stage to avoid process-related errors, which can lead to defective products or unnecessary manufacturing delays. There are different stages in the product life cycle, starting with ideation or conceptualization. Then comes the design, feasibility study, analysis, trial production phase, testing, mass production, etc. The quality inspection here involves all levels.

When using a CNC machine tool to produce a part, the purpose of rapid prototyping must be achieved. Ensure that your machine can manufacture the required products and prototypes.


Why is a control plan important?

Quality control of FRIMA CNC machining not only helps suppliers diagnose their quality problems, but also helps them eliminate production waste and maintain consistency. In addition, suppliers use control plans to establish production process control methods to prevent problems from snowballing into something more harmful. Implementing control plans helps suppliers overcome key challenges and focus on what matters most to customers, such as product quality, process efficiency and expense reduction.


Mar 12, 2022