■ Assembling Precision
During the assembly, if there are abnormalities such as deformation of the mounting surface and reluctant assembly, the product performance will be degraded or even damaged. As shown in the figure below, the following table is the recommended accuracy of the assembled shell. The picture below takes the simple combination hollow type speed reducer as an example.
the data in ( ) is the value of the integrated wave generator
■ Installation Method and Step
The installation Method and steps are the same with GHS.
■ Installation Precaution
The speed reducer may vibrate and cause abnormal noise when assemble in the wrong way, please comply with the below precaution.
■ Precaution of Wave generator
Avoid overload pressed on the position of wave generator bearing when assembling. The wave generator can be inserted smoothly by rotating.
Please pay attention to control the influence of center offset and skew within the recommended value, when using integrated wave generator.
■ Precaution of circular spline and flex spline
1. Make sure the surface of installation is flat, not slanting.
2. Make sure there are no upheaval, rough edges and foreign matters in the hole of the screw.
3. Make sure there are chamfering processing and avoiding processing on the position of case installation, to avoid interfere with circular spline.
4. Make sure the circular spline can be rotated when it assembling to shell, check if there is any position interfere or stuck.
5. Make sure the position of screw holes are exact and check if there is a connection between bolt with circular spline /flex spline due to the skew processing of bolt, which makes the rotation of bolt heavy.
6. Do not tighten the bolts to the specified torque all at once. Please temporarily tighten it with a force of approximately 1/2 of pecified torque, and then tighten it to the specified torque. In addition, tighten the bolts in diagonal order usually.
7. Check whether there is extreme unilateral engaged when the flex spline is combined with the circular spline. When a one-sided offset occurs, it may be due to a center offset or skewing of the two components.
8. Pins to the circular may low rotation accuracy, so please avoid is if possible.
9. Please do not tap the front end of the gear at the opening or press it with excessive force when assembling the flex spline.
10. Check whether there is extreme unilateral engaged when the circular spline is combined with the circular spline. When a one-sided offset occurs, it may be due to a center offset or skewing of the two components.
■ Precautions for Grease
1. The flexible bearing needs to be evenly coated with grease, and the cavity formed by the connection between the motor and the mounting flange needs to be filled with 80% grease.
2. The inner wall of the flex spline needs to be evenly coated with grease, and the cavity formed by the connection between the flex spline and the flange needs to be filled with 80% grease.
3. The performance of grease will change by temperature, the higher the temperature, the faster the deterioration. In order to ensure the grease always in good condition, the heat balance temperature of the high temperature section of the reducer should be lower than 70°C, and the temperature rise should be lower than 40°C.
4. The wear of each moving part of the reducer is mainly affected by the performance of the grease. The grease should be replaced every 3000 hours of operation for the harmonic drive if possible.
5. There is no grease applied to the other parts except the root of the tooth of the simple combination reducer, please apply the remaining parts according to the specific situation.
■ Other Considerations
1. To avoid damage during use, the harmonic drive must be installed under a clean environment, and no foreign matter can enter the reducer during the installation.
2. Please make sure the surface of the gear and flexible bearing of the reducer always fully lubricated. It is not recommended to make the face of the tooth always facing upwards, which will affect the lubrication effects3. Install the flex spline and circular spline on the device firstly, then assemble the wave generator.
4. When install the machine, the long axis of the wave generator is aligned with the long axis of the flexspline of the reducer. Then fix the reducer with the corresponding screw, and tighten the it slightly.
5. Please confirm that engagement between the flex spline and circular spline are 180°symmetrical, after assembling of the wave generator.
6. Once finish installation, please run it at a low speed (100rpm) first, if there is abnormal vibration and noise, please stop it immediately, and check whether the installation is correct or not , or contact us .To avoid damage from incorrect installation.
7. The requirements for the installation plane for reducer are: flatness 0.01mm, perpendicularity to the axis 0.01mm, and concentricity of the threaded hole or through hole to the axis 0.1 mm.
8. To prevent grease leakage and maintain the durability of the reducer, corresponding sealing mechanisms must be used for different positions, such as: oil seals for rotating motion, O-rings for mating surfaces of various parts, and screw glue for screw holes.
9. Please strictly follow the pocket hole of the reducer in the drawings to confirm the design of the flange and wave generator. If the exceeded pocket hole, it will cause interference between the flexspline and the flange or the wave generator, affect the service life of the reducer.
10. The installation design of the reducer should be according to the installation depth requirements of the wave generator. The different installation depth of the reducer will affect the starting torque and accuracy of the reducer.
11. There is no anti-rust treatment on the surface of the reducer. If rust prevention required, apply the rust inhibitor to the surface.
