When conducting drilling processing on the surface of acrylic solid, the following matters should be noted to ensure the safety and processing quality of the processing process:
First, preparatory work in advance
On-site cleaning
Thoroughly clean the construction site to ensure that the acrylic solid surface is free of debris and dust, so as not to affect the accuracy and effect of the drilling.
Equipment inspection
Carefully inspect the drilling equipment, such as drilling RIGS and drill bits, to ensure they are intact and functioning properly. Especially for the drill bit, its sharpness and wear condition should be inspected, and it should be replaced in time if necessary.
Positioning mark:
According to the construction drawings or actual requirements, accurately mark the position and depth of the boreholes on the solid surface of the acrylic. Use measuring tools for precise positioning to ensure the accuracy of the drilling position.
Second, drilling operation
Select the appropriate drill bit:
Select the appropriate type and specification of drill bit based on the hardness and thickness of the acrylic solid. Generally speaking, for harder acrylic solids, drill bits with higher hardness and better wear resistance should be selected.
Control the drilling speed:
During the drilling process, the feed rate and rotational speed of the drill bit should be reasonably controlled. Excessive feed rate may cause the drill bit to break or the quality of the machined surface to decline. However, a too slow feed rate will affect the processing efficiency.
Pay attention to cooling and lubrication
When drilling, heat and friction are generated, which may cause the drill bit to overheat or burn the machined surface. Therefore, during the drilling process, coolant or lubricant should be used in a timely manner to lower the temperature of the drill bit and reduce friction.
Prevent workpiece offset:
During the drilling process, it is necessary to ensure that the acrylic solid workpiece is stably fixed to prevent the drilling position from shifting or the drill bit from breaking due to the workpiece’s displacement. The workpiece can be fixed on the machining table by using tools such as fixtures or pressure plates.
Pay attention to the drilling depth:
Drill strictly in accordance with the marked depth to avoid drilling too deep or too shallow. Drilling too deep may damage the structure of the workpiece. However, overly shallow drilling holes cannot meet the usage requirements.
Drittens, Follow-up-Handling
Residue in the cleaning hole:
After the drilling is completed, use special tools to clean the inside of the hole to ensure there are no residues inside. Residues may affect the subsequent usage effect or cause damage to the workpiece.
Check the processing quality:
Quality inspection is carried out on the acrylic solid workpieces after drilling processing, including hole diameter, hole depth, hole position accuracy, etc. If non-conforming products are found, they should be repaired or reprocessed in a timely manner.
Fourth, safety precautions
Wear personal protective equipment:
During the drilling process, appropriate personal protective equipment such as safety helmets, goggles and gloves should be worn to prevent accidental injuries.
Keep the ventilation good:
During the drilling process, harmful gases or dust may be produced. It is necessary to ensure good ventilation at the construction site to reduce the accumulation of harmful substances and their harm to the human body.
Comply with operating procedures:
Operate strictly in accordance with the operation procedures of drilling processing to avoid safety accidents or processing quality problems caused by non-compliant operation.
Fifth, handling of special circumstances
Drill large-diameter holes
If large-diameter holes (such as those with a diameter exceeding 30mm) need to be drilled, they should be completed in two or more sessions. First, drill a small hole as a guide hole, and then gradually increase the hole diameter to the required size. This can reduce the influence of axial force on the drill bit and the workpiece.
Drill deep holes
When the drilling depth is large, the drill bit should be withdrawn from the hole in a timely manner for chip removal and cooling. This can prevent the accumulation of drill cuttings from causing the drill bit to break or the machined surface to burn.
Processing hard materials
If the solid hardness of acrylic is relatively high and the drilling is difficult, methods such as preheating the workpiece first, using a hard alloy drill bit or increasing the flow rate of the coolant can be considered to improve the processing efficiency and quality.
