The idea of ​​transformation is that it must have the functions of automation and programming of CNC machine tools to meet the processing needs without causing waste of functions. It also overcomes the shortcomings of high labor intensity and high failure rate of hexagonal turret lathes, with fewer investment. , get a bigger economic effect. We use the C3163 hexagonal turret lathe as the object of transformation. The machine tool is used for processing tractor bearing housing parts, with many processes, complicated procedures and high precision requirements. It is necessary to complete the work of the end faces, chamfers, stepped holes and hinged inner holes respectively. The spindle requires 136r/min and the speed of the r/ and n. The turret is equipped with a knives and two reamers respectively. The machining of one part turret needs to be transferred three times. The working feed requires two speeds to meet the requirements of the hole and the reaming respectively, and the working efficiency is very low. Due to the instability of the manual reaming, and for other reasons, the 3 gamma inner hole of the part has not met the technical requirements.
After the original machine tool completes the keyhole, the operator manually releases the clutch, rotates the handle to change the speed, and then presses the clutch, which has many actions and long auxiliary time. Fuji FRN7, which was abandoned by the old assembly line of the first assembly plant. SG inverter with Y132M-4B3/7. Skw AC asynchronous motor, can preset eight speeds to complete the spindle speed change, not only cancel the manual operation, but also the shift can be completed during the retraction process, reducing the auxiliary time. The frequency converter adopts PWM wave controlled AC-to-one-transformer, which has a 32-bit microprocessor inside. It has good positive wave output, good torque characteristics and fast response, and also has various protection functions. The fault code is displayed on the display for easy maintenance. The frequency converter is easy to operate and can set the frequency arbitrarily. The frequency conversion speed regulation is simpler and more reliable than the mechanical transmission speed change.
The mechanical transmission is changed to a hydraulic transmission. The biggest disadvantage of the hexagonal turret lathe is the fast feed box. The vertical and horizontal feed boxes have a high failure rate, and the repairs take time and labor. The water inlet problem of the feed box is a difficult problem that the manufacturer can't solve, and the fault is frequent due to poor lubrication. The fast advance and fast retraction of the horizontal knife holder is realized by the manual rocking hand wheel. The quick knife box of the vertical knife holder is connected to the quick feed by the friction plate or the joint, and the quick feed box is too sensitive and insensitive to increase the operator's Labor intensity. Too light to fear that the knife is too heavy to pull, this part is the highest failure rate, the most difficult part of the operation.
We use the T7053B and bamboo 054B two control panels designed by our factory to match the two oil cylinders, and then complete the fast forward, work forward and fast reverse functions of the vertical and horizontal tool holders respectively, and use them on the vertical tool holder. The secondary work advances respectively meet the different feed speeds required by the two steps of the hole and the reaming, and the stepless speed regulation can be realized. Fast-moving, industrial advancement, and fast-return automatic conversion are accurate, reliable, and stable, realizing automation and program, and reducing labor intensity. The root cause of multiple failures was eliminated by removing the knife box.
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