Marposs Beijing Office Monday
As the world's leading measuring instrument manufacturing company, Marposs has a complete solution for the measurement of auto parts manufacturing and assembly. In addition to the well-known online inspection, final inspection machine, film selector, assembly line, etc., Marposs Machine detection technology is also increasingly used in the field of automotive parts processing, such as adaptive control and broken knife monitoring with power sensors on CNC machine tools; monitoring of machine status with acceleration sensors, (with or without resonance, whether the tool holder has Foreign object); use the displacement sensor to compensate the high-speed spindle thermal elongation in real time; use the temperature sensor to monitor the bearing state to prevent the lock; use the workpiece probe to position the part and monitor the important size. Before the probe was used, the scrap was generated due to the poor consistency of the blank or the incomplete parts when the chip was installed. The probe can automatically adjust the machining origin of each part according to the actual blank size, so that the consistency of a batch of parts is guaranteed. For the clamping error to a certain extent, an alarm is given to prevent the occurrence of waste products, and even the probe can be used to automatically distribute the blank margin for the parts with large blank residual changes, and the cutting times can be reduced when the margin is small, saving Cutting time; when the margin is large, the remaining amount is distributed to other processes, avoiding all the margin fluctuations on the first order, protecting the machine tool and the tool.
Many engine and auto parts production lines have been equipped with Mabos in-machine inspection probes when buying machine tools, and some manufacturers have not equipped them when they bought them. They chose to install probes on existing machines. For example, recently, Marposs was in a certain cylinder. The probes are installed on the three production lines of the cover factory to improve product quality and reduce scrap rate. The following is a solution for one of the products (see the attached drawing); usually in the machining process, the blank surface A1, A2, A3 is first positioned, the lower cam surface of the combustion chamber surface is milled, and the cam after milling The shaft surface and the blank shape are positioned to clamp the workpiece and process the combustion chamber surface. Because A1, A2, and A3 are casting surfaces, the height is inconsistent, and the processed camshaft surface is consistent with the A1, A2, and A3 positioning planes. The same inconsistency will also be reflected to the combustion chamber surface, so that the four combustion chambers shown in the figure The holes are also inconsistent, and when the allowable range is exceeded, the workpiece becomes a waste.
In addition, the operator's improper clamping of the workpiece or the chip on the positioning surface will affect the machining surface and scrap the workpiece. The cylinder head parts are relatively large and have many pre-processes, and the scrapping of the workpiece greatly increases the production cost.
If the Marposs workpiece probe is used for pre-processing inspection, the production cost will be greatly reduced.
Before machining, measure the A1, A2, A3 positioning surface and the B1, B2, B3, and B4 combustion chamber hole reference planes with the probe. According to the measurement results, compare the three faces of A1, A2 and A3, and set the program to make the difference between the coordinates of any two faces within the tolerance range. When the difference is exceeded, the machine tool will alarm that there is a problem on the face, so that the operator can check the clamping. Then compare whether the four faces B1, B2, B3, and B4 are within the tolerance range. In the tolerance range, the average surface heights of B1, B2, B3 and B4 are calculated as the working surface of the combustion chamber, and automatically compensated into the workpiece coordinate system, so that the processed combustion chamber surface satisfies the four combustion chambers to the greatest extent. Hole consistency.
In this way, it is possible to avoid scrapping of the workpiece caused by the clamping failure. It can also maximize the pass rate of the workpiece and eliminate the unqualified blanks as early as possible, thus avoiding the equipment and labor waste caused by the next processing and measuring processes.
Due to the obvious effect of using the probe, this user has also installed probes on the other two production lines.
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Futian Machinery Co., Ltd. , http://www.skywin-extruder.com