Menu della guida per l'utente

Guida utente

Attribute control, measurement control

Attribute control

Each part is measured according to a the OK/KO scale, acceptance of the batch is carried out if the number of KO's measured is less than the limit. Attribute control can be:
  • Single: a certain number of parts is measured once and the acceptance of the batch is defined at the end of the measurement of all parts.
  • Double: a first batch of parts is measured, the batch is accepted if the number of defects is less than "Acceptance 1", rejected if the number of defects is more than "Rejected 1", otherwise a second batch of parts is measured and the batch is accepted if the number of defects is less than "Acceptance 2", otherwise it is "Rejected". This type of control limits the number of parts being measured.
  • Progressive: the acceptance or rejection of a batch is calculated for each measurement. This type of control is the most effective.
Advantage of attribute control: simple to set up
Disadvantage of attribute control: doesn't allow an NQA of less than 1% without significantly increasing the number of parts being measured.

Measurement control

Each part is measured on a quantitative scale, acceptance of the batch occurs if the batch's mean is farther from the k standard deviation of the closest tolerance (k or k factor defined by the reception control). Measurement control can be:
  • Single: a certain number of parts is measured once and the acceptance of the batch is defined a the end of the measurement of all the parts.
  • Progressive: the acceptance or rejection of a batch is calculated for each measurement. This type of control is the most effective.
Advantage of attribute control: significantly limits the number of parts being measured in comparison with attribute controls.
Disadvantage of attribute control: Requires the measurement of each part quantitatively.

Una soluzione completa per l'Industria 4.0

8 moduli statistici

trial

Test

€ 0

30 giorni

Testalo gratuitamente

APC

SPC

Controllo

Analisi

check

30 giorni

check

Tutte le funzioni di Ellistat

check

1 utente

Supporto tecnico e ed aggiornamenti inclusi

student

Studenti

€ 0

1 anno

Checkout

Analisi

check

1 anno

check

Tutte le funzioni di Ellistat

check

1 utente

check

Licenza dedicata agli studenti che dispongono di una tessera studente in corso di validità

Supporto tecnico e ed aggiornamenti inclusi

standard

Standard

€ 49

per utente al mese

Checkout

Analisi

check

Licenza rinnovata ogni mese

check

Tutte le funzioni di Ellistat

check

Utenti illimitati

check

Supporto tecnico e ed aggiornamenti inclusi