This is also determined according to the production capacity. If there are hundreds of small batches, manual clamping is also feasible.
From thousands to tens of thousands, the efficiency and reliability of clamping should be considered when the die-casting parts of automobile parts generally turn to NC machining. Generally, hydraulic clamping is adopted. At this time, it is necessary to consider how to design the hydraulic pipeline.
The establishment of fixture must carefully analyze the structure and positioning mode of parts, and sometimes consider the processing technology.
Generally, people who design fixtures will consider the need for you to provide them: blank drawings and part drawings sometimes need you to provide technology to facilitate fixture design, and there will be no problems such as difficult positioning, inaccurate positioning and processing interference.
Some parts are die-cast first, so the size and accuracy of your die-cast parts must be considered here. The selection of positioning datum and positioning method is convenient and reasonable. Here, you also need to consider your processing technology to avoid interference between the fixture and the tool.
If it is multi-faceted, then it is necessary to consider how to locate the secondary clamping. At this time, it is more necessary to provide a processing technology and dimensional accuracy range. In this way, the positioning and clamping of the fixture can be determined according to the machining surface.
Fixture design considerations: clamping mode (manual or hydraulic) positioning mode (positioning block or positioning pin), fixture material positioning auxiliary spring and so on.
Fixture design starts with the processing technology of your blank finished parts and so on.
Maybe everyone will design something different, but remember that the simpler the structure, the more reliable it is.
At the same time, it is best to consider how to improve the clamping efficiency of operators (humanization).