The casting period is usually between 20 and 25 days. It is more reasonable to set the casting period for the entire mold model at one month, taking into account the foundry's production schedule at the same time. Before returning the mold casting to the mold supplier's workshop, it is necessary to inspect it for major casting flaws such as casting cracks, etc. If there are any unqualified parts, they must be recast as soon as possible. Sand inclusions and other casting flaws, for example, are only visible after 2D processing. OEMs should inspect the casting after the mold has been processed in two dimensions.
Mold machining and processing of digital model release
Machining can be done after the mold has been cast, but this assumes that the processing data has been released. The official processing instruction from the main machine factory is also required before the processing data can be released. Mold suppliers can perform numerical control programming based on the product's processing data and then machine the mold. The machining of the mold can be roughly divided into Open rough - a processing - group - semi-finishing - (heat treatment) - finishing, and the above-mentioned casting inspection in the machining process, which can be used to determine whether there are any sand or cracks in the casting defects, as well as timely judgment and treatment of casting problems.
This link also contains a very important piece of work: actuarial calculations. Actuarial science is to control the spring back, to ensure the precision of fabrication, to optimize the exterior quality, to ensure the vehicle appearance important means of light and shadow, is valued by an increasing number of hosts and mold suppliers can sharply reduce the precision of the spring back control late mold debugging cycle, actuarial springback control
Although actuarial calculations must be performed using machining data, die casting data can be used to shorten the project cycle. After the machining data has been released, the change points can be compared to see if a recalculation is required. Normal finishing work can begin after the actuarial work is completed.
The first stage of the process is mold grinding and matching, as well as debugging
After the mold finishing fitter, there are still a few ZhuanPei and research work, press mold debugging the main check from mold oriented research, profile, pressure coil, pressure plate, the working area of research, such as plastic work in place to ensure that the mold base is in place.
To reduce the influence of the fitter on the realization of the technical scheme, mold debugging should be carried out in strict accordance with the debugging instructions, and grinding work such as grinding drawing bead and process supplement should not be carried out at will. This is an important part of the work, which is led by a technology company and focuses on the realization of the confirmation process, which includes drawing material inflows, thinning, spring back parts, surface parts product testing content, size, material, and so on through the continuous testing process, constantly optimize, gradually improve process effectiveness, and shortening the period of late dissent.
At the same time, one of the most important indicators of a mold supplier's technical capability is the precision of the first piece. It can be used as a critical foundation for the technical ability of subsequent project bidding, which is beneficial to increasing each mold supplier's competitiveness and continuously optimizing the selection of the mold contracting supplier with stronger technical strength, lower costs, and shorter manufacturing cycle.
Molds must be pre-approved before they can be used
According to the project management plan, the mold supplier verification process is complete, the unqualified corrective terms are issued after pre-acceptance, and the project can be completed using the same process. Die mold suppliers must provide self-check reports and parts precision, surface quality, and other reports, and form a technology department after pre-acceptance. Organization personnel to die casting mold supplier for pre-acceptance, acceptance by including technology personnel, mold repair, and quality inspection personnel, primarily from the dynamic, static, stamping mould quality from three aspects in strict accordance with the checklist for mould acceptance, precision stamping parts quality should include precision (key), exterior quality, thinning, flanging quia thorough examination of a variety of factors, such as produce a detailed list of problem areas, including mold moving and static, which mold suppliers and on-site personnel can use to promote sales items at a later stage.
After the molds have been pre-accepted, detailed rectification plans for problem points can be made with suppliers, and the time for the molds to be returned to the factory can be confirmed based on project commissioning planning and the molds' pre-acceptance status. Before being notified to the personnel of the main machine factory for acceptance and re-inspection, any problems discovered during the pre-acceptance process must be corrected in the supplier's factory. The precision, surface products, and first sales items of the problem have met the conditions for the return of the molds to the factory following the re-inspection, and the mold notification from the main machine factory must be received before they are packaged and shipped.
Commissioning and acceptance of dies by the original equipment manufacturers (OEMs)
After the goods arrive, the mold goes through several stages that include mold tally - line parameter matching - factory contrasts between inside and outside - based work optimization, precision mold/surface quality promotion (matching), improve production efficiency, production, mold acceptance, and so on. The entire cycle of die debugging takes about 4.5 to 6 months on average.
Several aspects must be considered during the internal debugging of mold suppliers: 1. Personnel: Early debugging, the mold delivery mode plays an important role, during commissioning, need to coordinate suppliers to send a debug technical expert, and 2 3 beginning ability strong fitter's involvement in the debugging, good technical solution, and the beginning ability strong bench can effectively increase rectification efficiency and reduce the number of rectifications, reducing debugging time and ensuring project schedule.
After debugging, the parts precision, surface quality, production efficiency, mold failure rate, and other aspects behind the index to achieve acceptance criteria for final acceptance, the completion of final acceptance, mold development work is completed in phases, deliver the manufacturing site in daily production, tally maintenance, and breakdown mainThe output gradually decreases as model sales, model modifications, model replacement, and other factors change, until the model is no longer produced. After the model is no longer produced, the molds must be kept for a period of 15 years to prepare for the production of SP parts.