Numerically controlled spiral bevel gear grinding machine

Abstract

The invention relates to a numerically controlled spiral bevel gear grinding machine, comprising a bed, an upright, a grinding wheel spindle box, a workpiece spindle box, a grinding wheel dressing mechanism, a rotary worktable, an electrical system, a pneumatic system and a hydraulic system, and being characterized in that the bed is formed into an L-shaped structure having a slope on the surface thereof; a chip groove is formed at one side edge of the outer side of the bed, and an hollow upper upright is mounted on the bed through a sliding plate; the wall-mounted grinding wheel spindle box is mounted on the outer wall of the upper upright; a balance weight mechanism is arranged in the upper upright; a gear clearance eliminating mechanism is arranged on the workpiece spindle box; the grinding wheel spindle box employs a dual-shaft structure of a grinding wheel spindle and an eccentric spindle; an online dynamic balance device is arranged in the grinding wheel spindle box; and an online measuring device is mounted under the right side of the grinding wheel spindle. The numerically controlled spiral bevel gear grinding machine has the following advantages that: chip discharge is smooth and convenient; the degree of balance of the grinding wheel spindle is automatically adjusted through the online dynamic balance device; the rotary worktable is high in positioning accuracy and high in driving torque, and has a self-locking function; the gap of the workpiece spindle box is simple and convenient for clearance adjustment; and problems of unsteady transmission, and large gap and high noise of the gears are solved.

Description

technical field [0001] The invention belongs to the technical field of spiral bevel gear processing machine tools, in particular to a numerically controlled spiral bevel gear grinding machine. Background technique [0002] The CNC spiral bevel gear grinding machine is used for high-speed and precise grinding of spiral bevel gears. Its purpose is to correct the deformation of the gear heat treatment, improve the precision and smoothness of the tooth surface, and meet the requirements of stable transmission, noise reduction and high precision. [0003] The CNC rotary table is the core component of the gear grinding machine. The movement accuracy, bearing capacity, and ability to deal with impacts of the CNC rotary table are related to the production and processing capabilities and precision of the entire machine tool. The current application status of CNC rotary table is not ideal. At present, the transmission modes of the CNC rotary table include worm gear transmission and g...

AI Technical Summary

Problems solved by technology

The eccentricity of the grinding wheel installation, the uneven thickness of the grinding wheel, the unbalance of the main shaft, and the adsorption of the coolant by the grinding wheel will increase the vibration. These vibrations will not only affect the processing quality of the gear grinding machine, but also shorten the grinding time. The main shaft life of the machine and the life of the grinding wheel increase the number of grinding wheel corrections and the consumption of dressing diamonds, etc.

In addition, the balance adjustment of the grinding wheel is to adjust the grinding wheel adjustment block through the balance frame. Generally, it is carried out when replacing the new grinding wheel, and the grinding wheel cannot be adjusted under dynamic conditions.

[0005] In the prior art, the transmission mode of the workpiece spindle box of the gear grinding machine mainly adopts gear transmission, the gear transmission speed is high, but the motion stability is poor, and the gap is too large, so the gear anti-backlash mechanism is needed to make up for the above shortcomings

Traditional gear anti-backlash is achieved by adjusting the pin holes and conical pins on the two spur gears. Due to the long-term wear of the spur gears, the gap between them becomes larger and larger, and it is necessary to repeatedly disassemble the conical pins or re-hinge the pins. hole, so the gap adjustment is cumbersome and inefficient

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