Project process selection

Frog Tiny

By SATO

    Manufacturing process sequence

Manufacturing process sequence - What is your primary process? Why did you choose this

process?We make Structure Because the basic structure of the product.

- What is your secondary process? Why did you choose this process? We use Electric jigsaw for process to cut plywood. Because it easy

to built a woodproduct.

- What is your tertiary process? Why did you choose this process?We make polishing for Eliminate the inconsistencyof the wood from the sawmill.

Product function- With your selected material, how is your

material compatible with product geometry and manufacturing processes?

Wood is a material suitable for geometric shapes. The ease of forming of the product.

- What is the normal applied load to the material? Can your material take such load?

Yes, our product can take a load for about 30 N

Product function - What is the normal ambient conditions to

your material? When the wood is moisture or water will cause swelling of the wood.

- With your selected manufacturing process, how is your process compatible with the product geometry?

Yes. The wood can drilling and cutting that can be formed easily.

Manufacturing costThe material costs per part can be calculated as:

Let            M = total materials costs (raw, bulk)                q  = production quantityThe material costs per part, cM is

   cM = M/q = (cost/weight x weight) / number of parts

Let     cw = material cost per unit weight

   wp = weight of finished part

   ww= weight of wasted material, scrap

   a  = ratio of wasted material weight / finished weight           = ww / wp

Then the material cost per part, cM is  cM  = cw (wp + ww ) = cw (wp + awp )                   cM  = cw *wp (1+ a)      

TankcM   = cw *wp (1+ a) cM   = (36baht/1 piece)*(2 piece/ part) = 72 baht/partBodycM   = (42baht/1 piece)*(1 piece/ part) = 42 baht/part               

The tooling cost per part, cT isLet     T= total cost of molds, fixtures per

production run     q = number of parts per runThen                    cT = T/q       = 0

TankcP  = ct t =   ( 10 baht / hr)*(1 hrs/part) = 10 baht / partBody =   ( 10 baht / hr)*(1.5hrs/part) = 15 baht / part

The processing cost per part, cP isLetct  =  cost per hour, (machine rate + labor)t   =  cycle time (hours per part)then          cP  = ct t                          

c =   cM   +  cT  +  cP

= (114 + 0 + 25) baht/part

= 139 baht/part

As a result, total cost per part isc =   cM   +  cT  +  cP

c =   cw wp (1+ a)    +   T/q  +  ct t 

THANK YOU