Difference Between Process Capability and Machine Capability

Edited by Diffzy | Updated on: September 15, 2022

       

Difference Between Process Capability and Machine Capability Difference Between Process Capability and Machine Capability

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Introduction

Two capabilities that operate in quite distinct contexts are process capability and machine capability. We refer to anything from the chucks and fixtures utilized in the whole production process when we talk about "process capability." Process capability is assessed using specialist software, whereas machine capability is assessed by the manufacturer or a third-party examiner. Machine capability and process capability operate in very distinct fields. Machine capability focuses on the equipment themselves, whereas process capability is more concerned with the products and manufacturing methods. The capacity attributes of a certain piece of machinery are referred to as machine capability. Data, particularly graphical data that can be entered into specialized software that follows the development of the product from the product plan through the delivery stage, is a major component of process capability.

The parameters include the quantity of a load of raw materials, the machine's maximum output, the rate of production, and the interval between services. To get the finest machine for work, it is advisable to check with a third-party machine capability test. Machine manufacturers often describe all of a certain machine's capabilities in the user handbook. The capability of a process is assessed using specialist software, whereas the capability of a machine is determined by a third-party assessor or its maker. The distinction between process capability and machine capability does not end there. There are other distinctions, which are addressed further below. The capability of a process is assessed using specialist software, whereas the capability of a machine is determined by a third-party assessor or its maker. The distinction between process capability and machine capability does not end there. There are other distinctions, which are addressed further below.

Process Capability vs Machine Capability

Process capability and machine capability vary primarily in that the former depends significantly on data, whilst the latter depends on performance. The process capability outcome is influenced by all six elements. On the other hand, the outcome of machine capabilities is significantly influenced by machines and measurements. While machine capability is a short-term examination, process capability is long-term research. Process capability needs data to operate effectively, as opposed to machine capability, which is solely dependent on performance. All six components have an impact on the process’s capabilities. However, the results of machine capabilities are significantly influenced by machines and measurements. Process capability and machine capability are distinct from one another. Process capability and machine capability vary primarily in that the former depends significantly on data, whilst the latter depends on performance.

The process capability outcome is influenced by all six elements. On the other hand, the outcome of machine capabilities is significantly influenced by machines and measurements. While machine capability is a short-term examination, process capability is long-term research. Process capability needs data to operate effectively, as opposed to machine capability, which is solely dependent on performance. All six components have an impact on the process’s capabilities. However, the results of machine capabilities are significantly influenced by machines and measurements. Process capability and machine capability are distinct from one another.

Difference Between Process Capability vs Machine Capability in Tabular Form

Table: Process Capability vs Machine Capability
Parameters of Comparison
Process Capability
Machine Capability
Meaning
It is a statistical measurement of the intrinsic process variability of a certain attribute.
It represents the actual quality of the machine about its requirements.
Time
Longer
Short
Biased
Not biased
Biased
Formula
Cp = (USL-LSL)/6σ
Cm = USL – LSL / 6s
Focuses
On the methods of manufacturing
on the actual machines

What is Process Capability?

The quantifiable property of the procedure to the specification is its capacity. Both a process performance index and a process capability index may be used to represent it. The capacity of the process may be measured by the specification. It may be expressed as a process performance index when used as a process capability index. The computation of this measurement and a histogram are frequently used to display the outcome. Process capacity is more closely related to goods and manufacturing methods.

It largely depends on data, particularly visual data that can be entered into specialized software that monitors the development of the product from the product design to the delivery stage. A histogram and computation of this measurement are frequently used to demonstrate the output. They primarily forecast the number of pieces that can be produced outside of specs. Measuring the output variability of the process and comparing it to a product tolerance and proposed specification are the two key components of process capacity.

Process capacity primarily consists of two components: measuring the output variability of the process and contrasting that variability with a suggested specification and product tolerance.

In most cases, the process input contains one or more quantifiable properties that may be used to determine outputs. Process capability includes between 50 and 250 components. A process's estimates should be based on the existence of sufficient process controls. With the proper process controls in place, a process should be estimated. The control chart analysis is employed to establish whether the process is one of "statistical control." The process output is anticipated to satisfy the customer's requirements, engineering tolerances, or standards.  

Process capability is concerned with the manufacturing process, whereas machine capability is concerned with the equipment itself. Process capability includes 50-250 components in sequence, whereas machine capability includes 20- 50 in succession. Using sophisticated software, process capability is determined. Machine capability, on the other hand, is assessed by a third-party assessor or the manufacturer. The capability is useless in the absence of statistical control. Engineers perform the research of process capability to ascertain the degree of the process to satisfy these expectations. As a consequence, only common cause variation counts toward the process capability, whereas special cause variation does. It focuses primarily on the entire product delivery process, from creation through delivery methods. Process estimates should be based on the availability of effective process controls. The control chart analysis determines if the process is under "statistical control." The capacity has no value in the absence of statistical control.

As a result, only common cause variation contributes to process capability, while special cause variation does not. Customers anticipate that the process output will meet their needs, engineering tolerances, or specifications. Engineers conduct process capability studies to determine the extent to which a process can meet these objectives. It focuses on the entire product delivery process, from concept to delivery route. A product can be examined or cleared for manufacturing, subject to numerous changes, or canceled for production.

Machines, raw material quality, time, electricity, labor and employees, and the industrial environment are all aspects that influence process capacity.

This procedure measures the following variables:  the process's efficacy and efficiency, the product's quality, and the prices and profits required for commercial objectives

What is Machine Capability? 

The measurement of the actual quality of machine requirements is known as machine capability. An index called the machine capability index is generated from observations made during an unbroken or continuous manufacturing run. The abbreviation for it is Cmk. It is also known as early process capability and is a short-term capability indicator. Machine capability is the capacity of a machine to fulfill its stated requirements. It mostly concerns the machine's capacity specifications. A machine's aptitude for a certain industrial task is tested as part of a machine capability study. It is utilized to research how the machine's capabilities fit within the tolerance range.

The number of raw materials or loads, the gaps between services, and the speed at which the machine generates its finished product are some of the factors. Most machines are evaluated based on their rate of output. The most crucial feature of a machine is its production speed. With the aid of the extension, the machine makes an effort to do all jobs in the shortest amount of time. The capacity of the equipment to satisfy demand is everything in production. Production lag might negatively affect the entire line. The outcome of machine capability is significantly influenced by machines and measurements. In their user manuals, equipment makers frequently include all of a machine's specialized capabilities. To purchase a higher-quality machine for a particular task, a third-party machine capability test is also required.

A third-party evaluation also has the benefit of exposing the equipment's actual capabilities. Alternate components and accessories for the machine can also be improved by its capability.

Machines and measurements have a significant impact on the outcome of machine capabilities. Machine manufacturers often mention all of a machine's specific capabilities in the user handbook. However, it is also necessary to do a test for a third-party machine capacity to obtain a higher-quality machine for certain work.

Another advantage of third-party examination is that it reveals the true machine capabilities.

The capacity attributes of a certain piece of machinery are referred to as machine capability.

The parameters include the quantity of load or raw materials, the machine's maximum output, the machine's pace of production, and the duration between services. As well as detecting processes that might aid in the prevention of future issues. Machine spare parts and accessories can also improve machine capabilities. Measuring instruments have a great influence on the ultimate output of machine capabilities. In the user handbook, equipment makers frequently list all of a machine's special capabilities.

However, to purchase a higher-quality machine for a certain activity, a third-party machine capability test is also required. Machine manufacturers often mention all of a certain machine's capabilities in the user manual, but it is also advisable to verify with a third-party equipment capability test to ensure that you are purchasing the best quality machine for the task. Most machines are rated based on their output speed. The extension assists the machine is doing all duties as quickly as possible. On the production side, the machine's capacity to satisfy demand is everything. Production lag might have a severe influence on the entire line.

Another advantage of a third-party inspection is that it discloses the equipment's genuine capabilities. In addition, measures for avoiding such problems in the future will be identified. Other machine components and accessories may also boost its performance.

Main Difference Between Process Capability and Machine Capability In Points

  1. While machine capability focuses on the ability of the machine to deliver on the manufacturing process, process capability emphasizes the entire process of product delivery from conception to delivery routes.
  2. Process capability emphasizes the complete process of product delivery from conception to delivery routes, whereas machine capability concentrates on the capacity of the machine to deliver on the production process.
  3. Data, particularly graphical data, has a significant impact on process capabilities. On the other hand, performance is dependent on machine capabilities.
  4. The competency of the machine is determined by a third-party assessor or by the manufacturer, not by specialized software.
  5. Process capacity is a component of product development. On the other side, a machine's capabilities can be evaluated for purchasing purposes.

Conclusion

It is implied that process capability and machine capability work in two fundamentally different fields of application. Process capability evaluates the inherent unpredictability of the process, whereas machine capability assesses the actual quality of a machine in terms of its needs. To get the finest machine for work, it is advisable to check with a third-party machine capability test. Machine manufacturers often describe all of a certain machine's capabilities in the user handbook.

A third-party examination also has the advantage of exposing the machine's true capabilities and spotting potential troubleshooting mechanisms. Process capability is concerned with the entire delivery process of a product, from conception to delivery routes, whereas machine capability is concerned with the machine and its capacity to deliver on the manufacturing process. Process capability is essentially an appraisal of any product or process, whereas machine capability is similar but focuses solely on a certain machine.

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"Difference Between Process Capability and Machine Capability." Diffzy.com, 2022. Thu. 08 Dec. 2022. <https://www.diffzy.com/article/difference-between-process-capability-and-machine-capability-615>.



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