In machining, the choice of cutting method and the selection of equipment must be based on the actual situation of the production unit and the batch size of the machined parts. Some breakthrough processing methods can often bring us a refreshing feeling.
In Figure 1, the end face flange of the part has a groove with a width of (12 ± 0.02) mm, a depth of 5 mm, and a symmetry of 0.05 mm with a diameter of φ80-0.01-0.04 mm. The number of processing is 5,000 pieces, and the conventional processing is in Milling on the milling machine, the processing time is about 10min, and a large number of workpieces are repaired due to the wear of the milling cutter during machining; frequent replacement of the tool also takes a lot of auxiliary time.
figure 1
Considering that the milling machine configuration of the production enterprise is small, and some of the broaching machines are idle due to insufficient production tasks, the broaching is replaced by milling, which can greatly improve the production efficiency and improve the utilization rate of the equipment. To this end, the L6120C broaching machine is specially designed, and the tooling shown in Fig. 2 is specially designed: the tire guiding sleeve 1 is positioned and fixed by the hub, the T-shaped groove, the four Bolts and the broaching machine; the pulling guide core 6 passes through the left end wheel hub. The Set Screws 7 of the two key blocks 3 and M12 are connected with the pull guide bushing; finally, the workpiece is positioned and clamped on the pull guide core by two special M10 bolts 4 and quick change open Washers 5. After the workpiece is mounted on the tire guide core during machining, the qualified workpiece can be processed by placing a suitable adjustment gasket 2 at the bottom of the broach according to the wear condition of the calibrated tooth height of the broach.
The metal processing online prompts that the broaching production efficiency is extremely high, and the single-piece broaching processing time of the above-mentioned end face groove is less than 1 min; the quick-change opening gasket can be used to remove the workpiece without completely unscrewing the Bolt , thereby reducing the auxiliary time. The processing time of a single piece is greatly shortened. The quality of the processed products is also quite stable, fully in line with the customer's pattern requirements.
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Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com