The history of stamping
ü The history of stamping
In the 1880s, mass-produced bicycles used stamped
parts. Stamping instead of die forging and machining
results in a significant cost reduction. Although not as strong as die
forging parts, the quality of stamped parts is good enough.
In 1890, from the import of stamped bicycle parts
from Germany to the United States, American companies subsequently began to
have stamping machine tools manufactured by U.S. machine tool manufacturers.
Most of the bicycle parts were stamped and made by research and development of
the western wheel.
Several automakers used stamping parts before Ford
Motor Company. Henry Ford rejected the proposal of his engineers to use stamped
parts, but Ford was forced to use stamped parts when the company could not meet
the demand for die forgings.
ü The advantages of stamping:
1. Economical
efficiency
(1)
High production volume, relatively low
manufacturing costs for parts
(2)
Shorten working hours and save labor
(3)
Simple operation, which can be operated by
unskilled workers
2. High material usage: In
the stamping process, the waste is less than other processes, and the waste can be recovered almost 100%.
3. Simple processing:
simple stamping can produce complex parts
4. High production rate:
Application of automated machinery and equipment,
greatly improving the production efficiency of parts
5. High precision:
Products made from the same mold have the same size and shape
ü The disadvantages of stamping:
1. The shape of the part must conform to the shape of
the stamping process to be processed
2. The mold is specialized, a pair of molds can only
produce parts of the same shape
3. For parts with low production volume, it is not
suitable for mold processing; due to the higher cost of the mold, the
manufacturing cost of the part is relatively increased.
4. It takes a considerable amount of time to make the
mold, and it cannot be produced immediately so that the delivery time is
limited.
ü 沖壓的歷史
十九世紀八十年代, 大規模量產的自行車運用了衝壓零件。衝壓替代模鍛和機械加工, 導致成本大大降低。雖然不像模具鍛造零件那麼堅固, 但衝壓零件的質量已經足夠好。
1890年, 從德國進口到美國的衝壓自行車零件，美國公司隨後開始擁有由美國工具機製造商製造的衝壓工具機，通過研究和開發westtern wheel衝壓製造大多數自行車零件。
幾家汽車製造商在福特汽車公司之前採用了衝壓件。亨利·福特拒絕了他的工程師使用衝壓零件的建議, 但是當公司不能滿足模具鍛件的需求時, 福特被迫使用衝壓件。
ü 沖壓的優點:
1. 合乎經濟效益
(1) 生產量大，相對零件製造成本低
(2) 縮短工作時間，節省勞力
(3) 操作簡單，可以由非熟練工人來操作
2. 材料使用率高:沖壓加工中，廢料較其他加工少，且廢料幾乎可以100%回收
3. 加工簡單:簡單的沖壓即可生產複雜的零件
4. 產量率高:應用自動化的機械設備，大大提高了零件的生產效率
5. 精密度高:同一模具製造出來的產品，具有相同的尺寸與形狀
ü 沖壓的缺點:
1. 零件的形狀需合乎沖壓加工生產的形狀，才能加工
2. 模具屬專用化，一副模具只能生產同一形狀的零件
3. 對於生產量少的零件，不適合模具加工；因要分攤較高的模具費用，相對提高零件的製造成本
4. 模具製造需相當的時間，不能即時生產以致交貨期受到限制。
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