Braking torque loading device of digital control spiral bevel gear lapping machine and control method

Abstract

The invention discloses a loading braking torque device for a numerical control spiral bevel gear lapping machine and a control method thereof. The device comprises a driving shaft, a driving spiral bevel gear, a driving shaft servomotor, a driven shaft which has an angle of 90 degrees with the driving shaft, a driven spiral bevel gear, a device which pushes the driven spiral bevel gear and the driving spiral bevel gear to move along the axial direction of the device respectively, and a spindle driving unit of a numerical control system. The control method comprises the following steps: realizing a preparation stage of a driving-driven coupling function and a gear engagement stage; starting a driving-driven coupling function stage; starting a driving shaft rotating stage; beginning a lapping circulation stage; canceling the driving-driven coupling function stage; returning to an initial position stage; and finishing the lapping. The device has the advantages that the device changes the gear lapping of a mechanical structure, has steady operation, can lap at high speed, improve the speed by 1.5 times compared with the lapping speed of the prior technology, has good lapping effect, reduces noises during the engagement, and improves the service life.

Description

technical field [0001] The invention relates to a numerically controlled gear grinding machine, in particular to a device for loading a braking torque on a numerically controlled spiral bevel gear grinding machine and a control method thereof. Background technique [0002] In order to prolong the service life of spiral bevel gears in automobile parts, reduce the noise during driving, and further improve the contact area of ​​the gears, it is necessary to grind the tooth surfaces of each pair of spiral bevel gears that mesh with each other on a gear grinding machine. When the grinding machine grinds the contact area of ​​the tooth surface of the spiral bevel gear, loading grinding should be carried out. Loading the ground gear can effectively improve the meshing effect of the gear contact area. [0003] figure 1 It is a schematic plan view of a grinding structure of a gear grinding machine loaded with braking torque in the prior art. [0004] Such as figure 1 As shown, the...

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Problems solved by technology

[0008] The loading and grinding of the prior art gear grinding machine has the following defects: due to the limitation of the hydraulic proportional valve, there are only two loading braking torques to choose from on the driving surface or the reverse surface. When there are many different braking torque values, this method cannot meet the needs of multi-point grinding of the machine tool; secondly, due to the low stability of the hydraulic motor, it hinders the high-speed grinding of the gear grinding machine; Combining together to control the adjustment of the grinding machine is very troublesome and prone to failure

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