search query: @keyword laatukustannukset / total: 7
results-list
reference: 2 / 7
« previous | next »
Author:Vähä-Krekula, Liisa
Title:Konepajan raskasosavalmistuksen kehittäminen
Operation development of heavy machining in an engineering workshop
Publication type:Master's thesis
Publication year:2010
Pages:ix + 63 s. + liitt.      Language:   fin
Department/School:Koneenrakennustekniikan laitos
Main subject:Tuotantotekniikka   (Kon-15)
Supervisor:Aaltonen, Kalevi
Instructor:
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions
close

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  3093   | Archive
Keywords:heavy machining
boring and milling machine
quality costs
raskasosavalmistus
avarruskone
laatukustannukset
Abstract (eng): The aim of this master's thesis was to clarify the situation of heavy machining in an engineering workshop and on the basis of this study make the proposals for action.
The work itself can be divided into three parts.

The first part of the work was to clarify the profitability and applicability of the heavy machining.
Suitable components were selected and a make-or-buy analysis was made for them.
The emphasis in this study was on the costs of welding and machining.

The second part of the work was the quality of the heavy machining.
There was no kind of statistical data about neither the quality costs of the heavy machining department nor any total cost estimate of the actual quality costs.
In this work quality costs and their reasons were systematically reported within a year.

The last part of the work was to study the situation of the two heavy floor-type horizontal boring and milling machines.
The original supplier of the machines had made a preliminary report about the situation.
That was used in making the inquiries to the maintenance suppliers.

Quotations for new machines were also requested from the suppliers.

The result of this work was that heavy machining is critical for this engineering workshop and the manufacturing of these parts is both reasonable and competitive.
Under these circumstances it is recommended to repair the boring and milling machines in order to secure the company's own production capacity.
In that economic situation new machines were not a realistic alternative.
The statistics of quality costs helped the management of the heavy machining workshop to prevent and reduce the amount of quality costs in the future.
Abstract (fin): Työn tarkoituksena oli selvittää suuren konepajan raskasosavalmistuksen tilanne ja sen pohjalta laatia toimenpide-ehdotukset.
Työ jakaantui kolmeen osaan.

Ensimmäiseksi tuli selvittää raskaiden osien valmistuksen kannattavuus ja soveltuvuus.
Tätä varten tehtiin make-or-buy analyysi valituista raskasosista.
Pääpaino hintatarkastelussa oli hitsaus- ja koneistuskustannuksissa.

Toisena merkittävänä osa-alueena oli raskasosavalmistuksen laadun selvittäminen.
Raskasosaverstaan laatukustannuksista ei ollut mitään yhtenäistä tilastointia eikä näin ollen myöskään selvää kuvaa todellisista laatukustannuksista.
Työssä selvitettiin laatu- kustannukset ja niiden syyt vuoden ajalta.

Kolmantena kohtana oli selvittää raskasosaverstaan kahden lattiatyyppisen avarruskoneen nykytilanne ja kapasiteetti sekä tehdä toimenpide-ehdotukset niiden parantamiseksi.
Tilannearvion pohjana käytettiin Toshiballa teetettyä alustavaa kuntoarviota.
Sen perusteella tehtiin tarjouspyynnöt kunnossapitoyrityksille.

Työstökonevalmistajilta pyydettiin myös tarjoukset uudesta / uusista vastaavan kokoluokan avarruskoneista.

Työssä havaittiin raskasosien olevan kyseiselle yritykselle tärkeitä avainkomponentteja, joita on järkevää ja kilpailukykyistä valmistaa itse.
Avarruskoneiden osalta päädyttiin niiden täydelliseen peruskunnostukseen, jotta voidaan turvata oma valmistuskapasiteetti.
Kyseisessä taloudellisessa tilanteessa uusien koneiden hankkiminen ei ollut realistinen vaihtoehto.
Laatukustannusten kartoituksella ja varsinkin niiden syiden selvittämisellä pystyttiin tehokkaasti ennalta ehkäisemään vastaavien tilanteiden syntyä.
ED:2010-11-09
INSSI record number: 41288
+ add basket
« previous | next »
INSSI