Elimination Of Gear Backlash In Cnc Machining Feed System - China

Elimination of Gear Backlash in CNC Machining Feed System The transmission gear in the feed system of the CNC machining machine tool must eliminate the transmission gap between the meshing gears as much as possible, otherwise the motion will lag behind the command signal after each reversal of the feed system, which will affect the machining accuracy (accuracy) ).

There are the following two common methods for CNC machining machine tools to eliminate the transmission gear gap.

1 - Rigidity adjustment method The rigid adjustment method is an adjustment method that cannot be automatically compensated for the tooth side clearance after adjustment.

Therefore, the pitch tolerance and tooth thickness of the gear must be strictly controlled, otherwise the flexibility of the transmission will be affected.

This adjustment method has a relatively simple structure and a better transmission rigidity.

(1) Eccentric shaft adjustment method As shown in Figure 610, the gear 1 is mounted on the eccentric sleeve 2 - Adjusting the eccentric sleeve 2 can change the center distance between the gear 1 and the gear 3, thereby eliminating the gap.

In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology.

It generally refers to the process of processing parts on CNC machine tools.

In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining c17500 beryllium copper technologies have been developed and used in the aerospace industry.

(2) Axial gasket adjustment method For a pair of meshing cylindrical gears, if their pitch circle diameter is made into a smaller taper along the gear axial direction, changing the thickness of the gasket 3 can change the axial relative position of the gear 2 and the gear 1, thereby eliminating the tooth flanks.

gap.

In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology.

It generally refers to the process of processing parts on CNC machine tools.

In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining c11000 copper, a series of advanced CNC machining technologies have been developed and used in the aerospace industry.

Add a shim 2 between the two thin helical gears 3 and 4, change the thickness t of the shim, and the helix of the thin gears 3 and 4 will be misaligned, so that the thin gears 3 and 4 are respectively aligned with the teeth of the wide helical gear 1 - The left and right sides of the groove are tightly attached to each other, thereby eliminating the tooth side clearance.

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