goodtensile testing machineHigh transmission noise is a common but serious issue that needs to be taken seriously. Abnormal noise is usually a precursor to equipment failure or maintenance needs. If not dealt with in a timely manner, it may lead to more serious damage, affecting testing accuracy and equipment lifespan. Below, I will systematically analyze the reasons and provide a set of troubleshooting and solutions from simple to complex.

Step 1: Preliminary assessment and safety preparation

1. Safety first: Before conducting any inspection or maintenance, be sure to cut off the power and ensure that the equipment does not start accidentally.

2. Locate the sound source: Under the premise of ensuring safety, briefly turn on the device and try to determine which part of the noise is roughly coming from:

The motor part? (High frequency buzzing, squeaking sound)

gearbox/Gearbox? (dull impact, creaking sound)

ball screw/Belt? (Sharp friction, whistling sound)

Moving the crossbeam and guide rail? (Harsh metallic friction sound)

Step 2: Step by step investigation and solution

We will proceed in the order from external to internal, from simple to complex.

1. Lubrication problem (most common and easy to solve)

Poor lubrication is the primary cause of increased friction and noise.

Checkpoints and Solutions:

Ball screw: Check the surface of the screw for dryness, rust, or dirt.

Solution: Use specialized high-speed bearing grease or screw grease (do not use ordinary butter or engine oil, they may be too thin or have insufficient adhesion), clean the screw with a lint free cloth, and evenly apply a thin layer of lubricating grease. Manually move the crossbeam to evenly distribute the lubricating grease.

guide rail/Slide rail: Check the surface of the slide rail for scratches or lubrication.

Solution: Use specialized rail grease for cleaning and lubrication as well.

gear/Gearbox:

Solution: Check the oil level gauge of the gearbox (if any) to ensure that the lubricating oil is within the calibration range. If the lubricating oil changes color (turns black) or contains metal debris, it must be completely replaced with the lubricating oil specified by the equipment manufacturer.

Bearing: The bearing area usually has an oil nozzle, which is used to inject specified lubricating grease with an oil gun.

2. Loose, worn or damaged mechanical components

Checkpoints and Solutions:

Coupling: The coupling that connects the motor to the screw may be loose.

Solution: Check and tighten all fastening screws of the couplings.

belt/Synchronous belt (if equipped with belt drive):

Solution: Check if the belt is too loose (causing screaming due to slipping) or too tight (causing abnormal noise due to high bearing load), and adjust the tension to the appropriate state. Check the belt for cracks and wear, and replace it if necessary.

Bearing damage: This is caused byCommon reasons for the sound of "Ga La" or "Boom".

Solution: Manually rotate the screw and feel if there is any jamming or clearance. If it is confirmed that the bearing is damaged, it needs to be replaced by professional technicians.

Ball screw wear or bending: Periodic wear of the ball inside the screw nut or bending of the screw itself can occurThe sound of 'clanging'.

Solution: This is a serious issue and usually requires contacting the manufacturer or professional maintenance personnel to replace the screw pair.

Wear or clearance of guide rail: Excessive clearance between the guide rail and the slider can cause the crossbeam to shake and produce noise when moving.

Solution: Check and adjust the pre tension or wedge iron of the guide rail to eliminate excessive clearance.

3. Assembly and alignment issues

If the equipment has undergone handling, collision, or improper disassembly, it may cause the transmission components to be misaligned.

Checkpoints and Solutions:

The alignment between the motor and the gearbox, and the alignment between the gearbox and the screw.

Solution: Precision tools such as a dial gauge need to be used for recalibration to ensure the coaxiality of each connecting shaft. This job requires strong technical skills and is recommended to be operated by professionals.

4. Electrical and driver issues (relatively rare)

After eliminating the mechanical issue, if the noise still exists (especially the buzzing sound from the motor), electrical issues may need to be considered.

Checkpoints and Solutions:

Servo driver parameters: gain parameters of the driver (such asPIDImproper parameter settings may result in unstable motor operation, oscillation, and noise.

Solution: Contact the technical support of the device manufacturer for remote or on-site parameter optimization and adjustment.

Motor malfunction: internal bearing damage or poor rotor dynamic balance.

Solution: Professional diagnosis and motor replacement are required.