What are machine, material, product and application-related sources of error with regard to occupational safety?
Question:
What are machine, material, product and application-related sources of error with regard to occupational safety?
Answer:
Machine-related source of error:
A dovetail guide (JMU 137 series, KBM 50/65 series, KBU 110-4M ) that is not optimally set or not readjusted can lead to inaccurate feed and vibrations, which impairs the drilling quality.
Incorrect speeds or an inappropriate feed rate lead to excessive tool wear, poor drilling quality or even breakage of the drill bit.
Poor concentricity of the spindle causes imbalance, which has a negative effect on the precision and service life of the tool. If there is play in the tool holder, the tool cannot be guided stably, which leads to vibrations, uneven running and increased wear.
Insufficient magnetic holding force - caused by rust, paint, dirt or uneven surfaces - jeopardizes the secure positioning of the machine and can lead to slipping or incorrect drilling.
Material-related source of error:
Poorly machinable material with high tensile strength. Materials such as high-alloy steels place high demands on the machine and tool.
If incorrect cutting speeds or feed forces are used, the machine may suddenly jam or even break.
Heavily scaled surface. Scale forms a hard, brittle layer on the material. This can damage the drill bit or lead to snagging if it breaks - there is also a risk that the machine will break off suddenly.
Uneven or dirty magnet installation surface. Rust, paint, dirt or chips under the magnetic base significantly reduce the holding force. This can lead to vibrations, inaccurate drilling or even to the machine slipping during the drilling process.
Application-related source of error:
Insufficient cooling or lubrication leads to excessive heat development, which significantly shortens the service life of the drill bit and impairs the drilling quality.
Overloading due to excessive feed force can damage the tool or even cause the machine to break.
Inexperienced users tend to make operating errors more frequently, which impairs safety and precision.
Inadequate care and maintenance, especially during storage, can lead to corrosion, wear and malfunctions. Never work without a centering pin, as this is essential for exact positioning and safe ejection of the drill core.
Product-related source of error:
Damaged or worn drill bits not only impair the drilling quality, but also increase the risk of tool breakage and machine stress. They should be checked regularly for wear and replaced in good time. In addition, the use of non-original accessories can lead to fitting inaccuracies, insufficient stability and, in the worst case, damage to the machine.
Only tested original accessories guarantee safe and reliable operation.