Process summary

Process summary

①The materials choice

     The image is stainless steel materials φ 1.19
 
Of the screw call it, and use the thing which is thinner than a diameter.
I use materials of the line diameter of φ 1.66 for the machine screw of example) 2 millimeters

②Heading (header)

     Heading machine

I cut materials and devote myself to a brain to a cross and minus.
The screw is not yet made. I am called a screw bottom or a blank, a rivet for a pre-stage to become the screw.
     The heading machine inside
The heading machine inside. A model is the part which I change it and plan.
I hit a plus and the loss using the model called such a "punch" (I make heading).
After materials cutting, I do not use this punch immediately.
The capacity (quantity of meat) to use for a head must do the preparation that I looked good with each to change by a kind, the dimensions of the head.
It is a model to use by heading.
The left : Materials are in condition to have cut it
The inside : The part used for a shape (mushroom shape) head most is thick.
The right : The second shape (the state that a cross was hit, screw bottom, blank, state to be called a rivet)

③De-oil

     De-oil machine
 
I remove the machine oil which I used in heading.
De-oil machine

④Rolling (rolling)

     Rolling machine
 
I make a screw lower blank a screw using a rolling machine.
As a model was necessary for the heading each, the model of the rolling uses an appropriate model by the kind of the size screw, too.
     The left: The moving side right: The fixation side
It is a model to use by rolling.
If it is M1 .4, pace 0.3, M2 are in condition that Yamaya of pace 0.4 has been already carved.
The mountain swells, and a screw lower blank retires itself in the valley by pressuring it from both sides, and putting two models.
When I move clay before and after fastening with both hands repeatedly and do it into long pieces, are there not irregularities (mountain, valley) to the clay which narrowed with the irregularities of a hand and the finger?
I do not sharpen it. It is a similar principle.
As a thread is molded while a screw lower blank turns, I am called rolling.
As they do not sharpen a valley with a blade, most of the waste does not appear.
     Rolling opening

 

It becomes like this in the machine inside.
When I eat it, and a model has a blank.

     The rolling middle
 
A moving side half approached it.
     The rolling end
 
When a moving side moves before, and a blank is exhausted.
At this time, the screw has been already completed.

⑤De-oil

     De-oil
 
I remove the machine oil which I used in rolling.
The precision screw uses the small thing of the mesh of a net.

⑥Heat-treatment

The thing with the need heat-treats it. Mainly in the case of iron.

⑦Surface-treat

According to the request of the visitor, I do surface treatment (plating).
In the case of a miniature screw of the iron, there is much nickel plating.
In stainless steel materials and the brass materials, there are many cases of the removal of fat washing.

⑧Inspection, sorting

It is the inspection of the thing which went up from surface treatment.

⑨Packing, shipment

I pack it and, based on the packing specifications of the visitor, ship it.

Matsumoto Sangyo of the screw
〒270-1137
1380-5, Okahotto, Abiko-shi, Chiba
TEL. 04-7182-4490
FAX. 04-7182-2382

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<< handling product >>
●Small screw
●Camera screw
●Slack setscrew "Noji lock"
●Tapping screw
●Screw for glasses
●Special workmanship (precision rivet)

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