Designing and analysis ACS (курсовая работа на английском языке), страница 4

№	Manual soldering	Duration, min
1.	To extract plate from container	0,1
2.	To establish plate on a support	0,3
3.	To take a brush	0,08
4.	To type the flux on a brush	0,08
5.	To flux places of soldering	0,38
6.	To postpone a brush	0,08
7.	To take an electrosoldering iron	0,09
8.	To type solder on a soldering iron	29,7
9.	To solder conclusions of an electronic component	33
10.	To postpone a soldering iron	0,09
11.	To check up quality of soldering	0,25
12.	To remove plate from a support	0,27
13.	To lay plate in container	0,21
№	Automated soldering	Duration, min.
1.	To extract plate from container	0,1
2.	To extract paper masks under the form and the sizes appropriate to segments of plate, protected from solder	0,32
3.	To take a brush	0,08
4.	To type the flux on a brush	0,08
5.	To put a flux on the protected places of soldering and on masks	0,82
6.	To postpone a brush	0,08
7.	To paste masks on the protected places	0,15
8.	To lay plate in heating cartridges	0,27
9.	To include a line of soldering	0,05
10.	To solder plate on the plant	0,49
11.	To remove the cartridge from the plant	0,11
12.	To remove plate from the cartridge	0,12
13.	To remove a mask from plate	0,52
14.	To check up quality of soldered connections	0,25
15.	To take an electrosoldering iron	0,09
16.	To type solder on a soldering iron	2,97
17.	Solder defective connections	3,3
18.	To postpone a soldering iron	0,09
19.	To lay plate in container	0,21

Calculation of the party size:              ,  where

  - quantity of parties during one month, we take

it.

 - item time, where

- a correction coefficient with which help take into account group of complexity and type of manufacture, ; - Interest from the operative time, appropriate to preparing-final time, time for service of a workplace etc.,

- interest from the operative time, appropriate to time for rest,                      

 - operative time (from the table)

Calculation of piece time for manual soldering

Calculation of piece time for the automated soldering

Calculation of item-calculation time for manual soldering

, where

 - a volume of the party processable from one adjustment;

 - preparing-final time

 for manual soldering. We determine  For  and

                    

                        

                  

Calculation of ITEM-calculation time for the automated soldering

, where

 for a line of soldering АP-4. We determine  for  and

                    

                     

        

Figure 1. Optimization of soldering

Schedules  Are shown on figure 1. From schedules it is possible to draw a conclusion, that manual soldering (1) is optimum at soldering less than one plate in change. At soldering one and more plates in change the automated soldering (2) wave of solder is optimum.

The economic substantiation

 Calculations of the cost price and the price of manufacturing of printed-circuit-boards

The consumer markets of the given product may be electro radio factories and the enterprises that are engaged in assembly of printed-circuit-boards.

Competitiveness of the given product is provided due to availability and simplicity of element base, efficiency in technological process.

For radio-electric devices it is the most convenient to calculate expenses for logistics products. For this purpose it is enough to have the principal diagram of the device and the specification to it. Calculation of quantity and the cost of logistics products are listed in table, appendix 2. The prices for logistics products it is received equal market.

The structure of the full cost price of printed-circuit-boards is listed in table

The table

The article of expenses	Share of the cost price, %	Share of the cost price, UAH
The main materials	10	34,35
Logistics products	48	53,1
The salary of industrial workers	16	54,96
Consumptions on operation of the equipment	24	82,44
Общезаводские расходы	12	41,22
Unindustrialized consumptions	3	10,31
Total the full cost price	100	276,38

     The main materials are printed-circuit-board on which in a consequence radioelements will be located.

Consumptions on operation of the equipment - the consumptions called by repair and service of the equipment.

Manufacturing consumptions are the consumptions called by transportation of products and materials between shops.

Unindustrialized consumptions - called by warranty service and replacement of defective elements.