• Categories:行業資訊
• Author:
• Origin:峰茂齒條齒輪
• Time of issue:2019-11-02 13:01
• Views:59

(Summary description)
The methods and techniques for adjusting the clearance of rack and pinion installation, the detection standards of straightness and parallelism of rack and pinion assembly, and related precautions are described below for reference.



1. Tips for adjusting the gap between rack and pinion installation:

Method 1. As shown in Figure 1, when the gear and rack are engaged, insert a copper foil with the required gap thickness, such as a copper foil with a thickness of 0.02mm, and apply a certain pre-pressure to the gear to make the gear and the rack compact , And then push the gear to turn the copper foil, the final gap we get is about 0.02mm.

Method 2. As shown in Figure 2, the gear and rack are meshed as shown in the figure above. After the gear is pre-tightened, the gear swings back and forth slightly, and the gap is seen on the swing table. Adjust the gear up and down to adjust the gap.

Note: When assembling gears and racks, ensure that they are parallel and perpendicular, and the concentricity should also be within the standard range, otherwise it will affect the assembly and use. It is better to have several strip-shaped (5-20mm) holes in the screw holes of the reducer to adjust the gap between the gear and the rack.

2. Instructions for straightness and parallelism testing of rack assembly:

1. After assembling the teeth, perform marking inspection on the back and mounting surface of the rack. When marking the table, the straightness and parallelism of the high-precision rack should be less than 0.02mm, and the medium precision should be less than or equal to 0.03mm.

2. The straightness and parallelism between the guide rail and the rack on the mechanism are less than 0.02mm for high precision, and less than 0.03mm for precision.

3. When assembling high-precision gears and racks, the backlash is less than 0.02mm, the backlash of conventional precision is less than 0.06mm, the concentricity is less than 0.02mm, and the general precision is less than 0.03mm.

4. Working environment In a good lubrication environment, if the assembly does not meet the above standard requirements, the following consequences will be caused:

1. The accuracy is not up to;

2. Loud noise;

3. It is easy to cause the wear of the gear rack and reduce the service life.

Therefore, everyone must strictly install and operate on the gap adjustment of the rack and pinion installation. If you are unclear, you can ask the technician for help.