Tech Magazine
Practice of GD.findi

Tech Magazine Practice of GD.findi

The 4th: Let's find the necessary quantity of initial inventory!
~ What is the quantity of intermediate inventory seen in GD.findi? ~

In the last time of issue (Let's make an intermediate inventory model! Create an inventory quantity model), we introduced a method to eliminate the waiting for post-process using GD.findi's initial inventory. Also, of course, we were able to confirm that the quantity of intermediate inventory became increase.

In this time of issue, we find the answer regarding the question that "how much initial inventory is needed" in order to make full use of post-process, in other words, the question would be "whether the quantity of intermediate inventory has not increased too much" against the capability differences between processes.

Tech Magazine Practice of GD.findi

Using the GD.findi model created in the previous issue of Tech Magazine, we check the intermediate inventory quantity.
Please refer to the last issue of Tech Magazine as below.
The 3th: Let's make an intermediate inventory model!
(http://www.lexer.co.jp/en/techmagazine/techmag003)

(1) Open model and Execute rendering
After accessing and logging into GD.findi, open the previous model and execute rendering with the open model.
* When you first implement rendering in the new window, click the [Reactor start-up] button first and display the [Reactor] tab.

Tech Magazine Practice of GD.findi

(2) Confirm the transition of intermediate inventory quantity
Let's see the transition of inventory quantity of intermediate stock area by each part.
* Transition data of inventory is generated from GD.findi log file.

Tech Magazine Practice of GD.findi

Horizontal axis: time, Vertical axis: the number of inventory
Part A: part A, part B: part B, part C: part C, part D: part D

Time transition of inventory quantity in each part is displayed.
* Parts A and C are overlapped because they show the same inventory transition.

From this, you can see that each part remains in the place for intermediate inventory at the end of production.

(3) In the Change of initial inventory part Let's reduce the initial inventory of parts A in intermediate stock using GD.findi.
Let's set the [number of parts] of the [initial stock] of the part A in the station of "intermediate inventory place" as half of "20".

Tech Magazine Practice of GD.findi

Again, implementation of rendering --> generation of inventory transition data from log data Let's check the transition of inventory by doing this.

Looking at the graph of inventory transition, you can see that the quantity of part A's inventory is decreasing from the condition with few number of inventory.
However, you can also find that part A still remains even at the end of production.

Tech Magazine Practice of GD.findi

Then, now let's set the initial inventory of part A as half of "10".
When the initial inventory of part A is 10, it can be understood from the [Production Cockpit] screen that the supply of part A will not be in time for the processing capacity of the post-process and the waiting will occur.

Tech Magazine Practice of GD.findi

It is obvious that when you see the operating status in the material flow chart.
The material flow chart is displayed by clicking [Tool] --> [Material Flow].
It is easy to find the operating status by turning on the [Station] , [Expand], and [Hide] check boxes on the [Material Flow] screen.
Looking at the operating status of the [Intermediate inventory place], you can find that there is a nonoperating (pink-colored) part.

Tech Magazine Practice of GD.findi

(4) Determination of necessary initial inventory
Initial inventory of part A was insufficient with 10 pieces.
From this fact, we found that it is desirable to have at least 11 parts and not more than 19, to ensure that there are no remaining parts at the end of production.

In this way, we will narrow down the necessary initial inventory quantity by increasing or decreasing the initial inventory of part A while watching the result.
Then, you can see that the initial inventory of part A can be produced without any issues if it includes 15 pieces.

Tech Magazine Practice of GD.findi

(5) Determination of necessary initial inventory of whole parts
As with the part A, we will calculate the necessary initial inventory for the parts B, C and D so that they do not remain. Then, the following quantity can be obtained respectively.
"Part B: 8, Part C: 15, Part D: 22"

Tech Magazine Practice of GD.findi

From the fact above,
Part A and C are 15, part B is 8, and part D is 22
If these numbers are arranged in initial inventory of stock, it is founded that the remaining number of intermediate inventory at the end of production also does not occur, even also the waiting for the post process.

From 2nd and 3rd time of issues, we have introduced the process of determining the intermediate inventory quantity.
Since the model introduced this time has a simple production system, it may be obtained by a simple calculation, but even for more complicated models, it is possible to prevent the occurrence of waiting for the post-process by observing the changes of inventory as did this time.

Moreover, from next time, we will introduce to you how to use GD.findi for another issues.
For more details regarding GD.findi, please find the webpage or contact GD.findi email address as below.

Webpage: https://www.gdfindi.com/en/support/help/
Inquiry address: gdfindi_support@lexer.co.jp

PAGETOP