High-accuracy gear milling machine for gear and rack

Abstract

The invention discloses a high-accuracy gear milling machine for a gear and a rack, which comprises a bed, a big upright, a working table, a sliding plate, a gear milling too rest and a rack feeding unit. The big upright is arranged on the bed; the bed is provided with an X-axis driving mechanism for driving the big upright to carry out radial feeding; the sliding plate is arranged on the big upright; the big upright is provided with a Z-axis driving mechanism for driving the sliding plate to carry out axial feeding; the gear milling tool rest is arranged on the sliding plate; the gear milling tool rest is also provided with a B-axis driving mechanism for driving a gear milling tool spindle to rotate; the rack feeding unit is arranged on the working table in a detachable manner; the rack feeding unit is provided with a Y-axis driving mechanism for driving the rack to be tangentially fed; and the working table is also provided with a C-axis driving mechanism for driving the working table to rotate. The gear milling machine disclosed by the invention not only can be used for machining internal and external gears, but also can be used for machining the rack; the machining range of the machine tool is expanded; and meanwhile, rigidity, stability, gear milling efficiency and machining accuracy of the machine tool are improved.

Description

technical field [0001] The invention belongs to the field of gear milling machine tools, in particular to a high-precision gear and rack milling machine. Background technique [0002] At present, the processing of gear parts mainly includes rolling, shaving, inserting, and grinding. However, the efficiency of hobbing machines is low when rolling large-diameter, large-modulus external gears. When processing larger diameter inner ring gears, the gear shaping method was commonly used in the past, the efficiency of gear shaping is lower, and racks cannot be processed; in addition to gear shaping, some manufacturers also use old-fashioned gear milling machines, old-fashioned gear milling machines The vertical and horizontal layout is adopted, and the layout is similar to that of the vertical lathe. Although the efficiency of this old-fashioned gear shaping machine is higher than that of the gear shaping machine, and it can process racks, but due to the long main drive chain and w...

AI Technical Summary

Problems solved by technology

When processing larger diameter inner ring gears, the gear shaping method was commonly used in the past, the efficiency of gear shaping is lower, and racks cannot be processed; in addition to gear shaping, some manufacturers also use old-fashioned gear milling machines, old-fashioned gear milling machines The vertical and horizontal layout is adopted, and the layout is similar to that of the vertical lathe. Although the efficiency of this old-fashioned gear shaping machine is higher than that of the gear shaping machine, and it can process racks, but due to the long main drive chain and weak rigidity, milling out Tooth accuracy is not very ideal

At present, the special machine tools for processing racks can only process racks, but not gears.

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