The way of the cost reduction
@The cost reduction of the product is the
activity to have hung the survival of the
industry on. The business needs the development
of the product with appeal which is accepted
by the market. Then, it doesn't sell in case
of not being a selling price with the lowness
of 1 dollar than the competition maker. Moreover,
it has become a deficit if the profit isn't
over even if it sets a low selling price.
For the industry, it is every day in the
war condition.
The great part with production cost has been
approximately fixed at the setting of the
design cycle and the manufacturing method
of construction of the product and the production
quantity. However, the role which does a
cost reduction in the factory is big. That
is, the mission at the factory is to manufacture
a designed product cheaply in the good quality.
Therefore, the way of reducing a cost of
production is explained from the experience
of the writer below.
The condition to implement the activity of
the cost reductionB
@ "The production cost item of expense"
which composes a cost of production become
the accounting system to understand, being
monthly every product.
A A production cost item of expense every
process be particularly grasped like the
following table as much as the material process,
the manufacture process, the assembler.
The active classification of the cost reduction
A cost reduction is activated, dividing into
the following classification after servicing
above condition.
@ The value analysis activities which changes
a design specification
A The purchasing cost reduction activity
of the bought our parts and the direct material
B The manufacturing expense cost reduction
activity
@
The item classification of the cost reduction
@ The direct cost reduction item (The item
which can do a cost reduction when an item
is adopted on the same day)
@@₯ The design specification VA item, the
standard of quality VA item, the inexpensive
material change item and the purchase relation
item
A The indirect cost reduction item (The
item which can not reduce in the production
cost in case of implementing the activity
of the factor system of the item and result's
not coming out)
@@₯ The item of the direct labor productivity
improvement₯ The facility overall efficiency
improvement item₯ The indirect material change
expenses reduction ite₯ The factory management
expense (in addition to the fixation expenses,
the indirect labor) item₯ The stock, the
physical distribution cost reduction item
@In the following. It writes down details
about the activity of the cost reduction
with manufacturing expenses at the factory.
The reduction of the manufacturing expense
@ The cost reduction for the change processing
A The cost reduction for the fixation processing
It is divided.
By the past, the productivity improvement
activity (the direct labor) was a main activity
but under present condition, has a limit
cost reduction's.
The match which passed to cost of production
item of expense in general is necessary.
That is, it is a direct material cost, change
expenses (The consumable stores, the power
energy expenses, the repairing expens, the
physical distribution costs).@Moreover,
the activity which improves the fixation
expense, the indirect labor and the factory
administrative cost which is made factory
management expenses and so on is necessary.Also,
the improvement which makes cheap facility
mold about the repayment cost of the facilities
and the mold, too, and the LCA (the low cost
automation) improvement, the disposal of
the low load facilities and so on are more
necessary.
To improve these, as the big means, a movement
and so on are done for the concentration
of the factory and the low labor country
in the production base. Also, it is the improvement
of the administrative cost (the indirect
labor, the fixation expenses, the physical
distribution costs in the factory) by the
improvement of the production system.Then,
improvement with substantial productivity
and the improvement of the material yield
improvement, the consumable stores, the repairing
expens are done by all the loss improvement
by the TPM activity.
Also, the improvement which makes the one
which is made in and the share which is made
outside the optimal and so on, too, are one
of the meansBy the small improvement means
₯ The concentration of the production line
₯ The integration improvement of the process₯
The improvement of the low additional value
work₯ The improvement of the process laying-out₯
The abridgment improvement of the work time₯
The machine cycle time abridgment improvement₯
The LCA (the low cost automation) improvement₯
The abridgment improvement of the down time₯
The improvement of doing manufacture bad
and the touching up₯ The improvement of the
energy cost
It improves by the above, the linear unit,
the process unit
It implements these as "the production
cost overhaul activity".
It writes down an active procedure and active
contents below..
The production cost overhaul activity
The active step | The active contents |
1. Cost reduction team's being started and making an active plan | EIt composes at the member of each of the
design development parts, the manufacturing
technique parts, the manufacturing management
parts, the quality assurance parts, the manufacturing
departments, the purchasing departments to
the cost reduction project team formation. ₯ It makes the master plan of the cost reduction activity.(Object product, the outline goal, the active period) |
2. The actual state grasping of the cost of production and the production line of the present situation | ₯ It investigates the actual cost of the
object product in detail (different from
the process according to the process) according
to the item of expense. ₯ It investigates in the facility overall efficiency of the manufacturing line, and the loss structure (the trouble, the plan, minor key stop Ages, bad in the manufacture, the touching-up), production cycle time, the efficiency, the production system, the number of the manufacturing management points, the stock, production lead time and so on.B |
3. The setting of a goal cost of production and the setting of a factor system par | ₯ It thinks of "the selling price-the
profit=the production cost"Then, it
sets a goal with cost reduction percentage
from the request of the cost reduction from
the customer. The value which deducted a gross profit (the operating profit + marketing management expenses + development expenses) from the target cost becomes a par with cost of production. ₯ The value which subtracted an actual manufacturing cost from the goal cost of production becomes a cost reduction goal sum. .It lays out a goal sum to each construction of cost item of expense in these ₯ It sets the par of the production factor system according to the production cost item of expense. The pars of the facility overall efficiency, the efficiency, the neck process cycle time, the material yield, the fraction defective and the stock such as the ₯ production lead time |
S4. It extracts an item according to the viewpoint of the cost reduction. | ₯ It displays the actual article of the object
product, and the similar product, the other
company product in the comparison. ₯ It digs up a straight cost reduction item, consulting ₯ It digs up following "the cost of production reduction item digging-up table" according to the process according to the manufacturing process to the reference in the indirect cost reduction item. ₯ It totals the assumption cost reduction sum of each item and it digs up twice of items of the par (50% of implementation yields). Especially, the design specification item and the item in the aspect of the quality presuppose the thing where the execution yield is bad. |
5. It is the execution of the item, saying the programming of the item. | ₯ It drafts an item program.It makes an active
plan, dividing here with the straight item
and the indirect item. The straight item(Design specification VA, the standard of quality VA, the part sharing, doing the becoming of the material which is inexpensive and the procurement part) The indirect item (₯ The improvement of the productivity₯ The improvement of the productivity₯ The cycle time abridgment₯ The improvement of the yield₯ The improvement of the production system₯ The reduction of the stock₯ The efficient-ization of the indirect business₯ The development of the new method of construction₯ Doing the becoming which is made in and so on) ₯ It develops to be short-term, the middle, the activity to do long-range division, OBJ DO in these. |
6. The result confirmation of the cost reduction Then, it puts the brakes.UD |
₯ It grasps an actual cost regularly according
to the item of expense with the confirmation
of the implementation item. Then, it confirms
the performance suiting of the cost reduction. ₯ Especially, the result of the factor system goes back when the drag isn't sound. It depends and it develops the means which doesn't always relax an activity. |
The cost of production reduction item digging-up table
The manufacturing process | The process and management point | The cost of production item of expense | The improvement item case | The estimate effect amount of money | |||||||||
The direct material cost | The parts expenses | The facility service cost | The direct labor | The indirect labor | The indirect material cost | The change expenses | The fixation expenses | ||||||
The direct material purchase The part purchase |
The carriage and the delivery | | | | | | | | | | | | ₯ The price close inspectionE ₯ It reconsiders a purchase place and a delivery condition. ₯ The transportation efficiency (The delivery number of times, the cooperation transportation) ₯ The delivery, the production SNP unification₯ The optimization of the container, the style of packing, the package |
The cost reduction sum / the piece | ||
The stock | | | | | | | | | | | | ’ | ₯ The fixed location ₯ The stock standard definition |
| | |||
The material manufacture process | The blank manufacture | | | | | | | ’ | | | ’ | ₯ The improvement of the material removal yield | | | ||
The drawing The trim manufacture |
| | | | | | ’ | | | ’ | ₯ The integration of the process ₯ The reduction of the trouble, minor key stop Ages ₯ The reduction of the mold trouble ₯ The improvement of the extension of the number of the lives of the mold ₯ The improvement of the visual inspection to abolish E₯ Making an automated system operation ₯ The abridgment of the setup time ₯ The SPM (The number of rotations)up |
| | |||
₯ The stock | | | | | | | | | | | | ’ | ₯ The production lot size reduction ₯ The fixed location ₯ The stock standard definition |
| | |||
The manufacture process | 1 process | | | | | | | ’ | | | ’ | ₯ It makes U form or parallel-shaped line. ₯ Doing the process becoming of the direct connection ₯ Making an in-line ₯ The integration of the process ₯ Doing supply forwarding the conveyance becoming of the car which is unattended ₯ The LCA improvement ₯ The reduction of the trouble, minor key stop Ages ₯ Doing the noon recess becoming of the automated system operation ₯ The abridgment of the set up time₯ The cycle time abridgment ₯ The worse, process modification improvement ₯ The burr removal abolition improvement ₯ Making a manual watching inspection a automatic check ₯ The central buying of the expendable implement It reconsiders a standard of quality. ₯ The stock scaling of the expendable implement ₯ The kind reduction by the expendable implement ₯ The extension improvement of the number of the tool lives ₯ It substitutes at the inexpensive tool. |
| | ||
Q process | | | | | | | ’ | | | ’ | | | ||||
Rprocess | | | | | | | ’ | | | ’ | | | ||||
The stock | | | | | | | | | | | | ’ | ₯ The production lot size reduction ₯ The fixed location ₯ The stock standard definition |
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The process of the assembly | P processes | | | | | | | ’ | | | ’ | ₯ It makes U form or parallel-shaped line. ₯ Doing the process becoming of the direct connection ₯ Making an in-line ₯ Doing supply forwarding the conveyance becoming of the car which is unattended ₯ The LCA improvement ₯ The concentration of the worker ₯ It is the concentration of the production line in a little. ₯ The abridgment of the work cycle time ₯ The improvement of the low additional value work (4 principles of the easy movement principles) ₯ The improvement of the linear balance percentage ₯ The leaving "The KARAKURI improvement" ₯ The reduction of the trouble, minor key stop Ages ₯ Doing the noon recess becoming of the automated system operation |
| | ||
Q processes | | | | | | | ’ | | | ’ | | | ||||
The forwarding | The stock | | | | | | | | | | | | ’ | ₯ The fixed location₯ The stock standard definition | | | ||
The carriage | | | | | | | | | | | | ’ | ₯ The transportation efficiency (The delivery
number of times, the cooperation transportation) ₯ The improvement of the package style of packing ₯ Theimprovement of the filling percentage (SNP, the container)The improvement of the transportation contract |
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The commonness | The production system | | | | | ’ | | | | | ’ | ₯ The consistent-ization of the process (The
material, the manufacture-the assembly) ₯ The consistent-ization which is made in ₯ The production of the information of being fixed ₯ The production lead time abridgment ₯ Production indication's simplification ₯ The reduction of the stagnation point ₯ The improvement of the way of carrying during the process ₯ The improvement of the style of packing, SNP ₯ The integration of the non-mass production line ₯ The disposal of the low load facilities ₯ The electric power charge contract improvement ₯ The employment of the low labor worker (Making a part, the others) |
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It returns to TPMINDEX. |