Does it matter if the gear has no backlash?

Does it matter if the gear has no backlash?Before talking about this issue, everyone, first of all, we must clearly explain the gear backlash, what are the general requirements for backlash, etc., as follows:

XNUMX. Description of gear backlash:

Refers to the assembled gear pair as agearThe amount of circumferential sway of the other gear when it is fixed is measured by the arc length of the index circle.

In the transmission of the slewing mechanism, the pinion gear and the slewing bearing are installed together as a standard part, and the tooth thickness cannot be changed. In order to meet the needs of the gear to bear large loads, the thickness of the pinion cannot be reduced.

Backlash is the clearance necessary for the smooth rotation of the gear. The higher the accuracy of the product, the smaller the backlash can be adjusted.But avoid using it without backlash.

XNUMX. General requirements for gear backlash:

1. Too small backlash can easily lead to poor lubrication and cause wear.In addition, since the two tooth surfaces are in contact with each other, it is possible to increase noise.

2. The gear teeth must have proper side clearance when meshing. This is also to prevent the gear teeth from jamming and forming a normal lubricating oil film between the gear teeth due to thermal expansion and deformation caused by the rise of the gear's working temperature.

3. The tooth side clearance required to ensure the normal lubricating oil film is determined by the lubrication method and the linear speed of the index circle.

2. Two methods of gear backlash adjustment:

1. Method XNUMX: Base center system, that is, the limit deviation of the fixed center distance, by changing the upper deviation of the tooth thickness to obtain different minimum limit backlash.

2. Method XNUMX: Basic tooth thickness system, that is, the limit deviation of the fixed tooth thickness, and different minimum limit backlash can be obtained by changing the basic deviation of the center distance.

3. However, in the adjustment of the backlash of the rotating mechanism, the base-center system method is not applicable, and the base-center system method is required.

I believe that after sharing the above content, everyone has a clearer understanding of the issue of whether the gear does not have backlash, etc. If there are any unclear points or related processing needs, you can click on the consultation window on the right side of EP to consult for free.