The radial drilling machine has a certain rigidity and stability, which can ensure the motion accuracy of the drill bit during the drilling process, and is suitable for parts whose machining accuracy requirements are not extremely high but there are also certain accuracy standards.For example, in ordinary machinery manufacturing, some non-critical parts of the holes are processed, such as the holes used to install bolts on some bracket parts. The accuracy requirements of these holes are relatively low, and the radial drilling machine can fully meet the processing requirements and provide good surface quality.The following are some precautions to improve the processing quality of radial drilling machines：
| Equipment installation and basic settings | |
| 1.Installation location selection | The radial drilling machine should be installed in a dry, clean environment away from the vibration source.Avoid direct sunlight and humid environments to prevent equipment rust and damage to electronic components.For example, in a machining workshop, choose a location away from large stamping equipment and grinding equipment that produces a lot of dust. |
| 2.Basic stability | The base of the equipment needs to be installed on a solid and flat foundation.Anchor bolts can be used to firmly fix the base to the concrete foundation to ensure that the machine tool will not be displaced due to vibration during processing.For large-scale radial drilling machines, the quality of the foundation is more critical, otherwise, the shaking of the machine tool will seriously affect the machining accuracy during drilling and other processing. |
| Tool selection and installation | |
| 1.Tool selection | Choose the appropriate tool according to the processing material and processing technology requirements.For example, when drilling alloy steel with higher hardness, cemented carbide drill bits should be used; when drilling non-ferrous metals, high-speed steel drill bits may be a better choice.For reaming processing, it is necessary to choose a suitable reamer. The accuracy and quality of its edge will directly affect the aperture accuracy and surface roughness after reaming. |
| 2.Tool installation | The tool installation should be firm and precise.When installing a drill bit or reamer, make sure that the axis line of the tool coincides with the axis line of the spindle to avoid skew.Use a suitable tool chuck, and check the runout of the tool after installation.Generally speaking, the radial runout of the tool should be controlled within the allowable range. For example, the radial runout of the drill bit should generally not exceed 0.03mm, otherwise it will cause the diameter of the drilled hole to be too poor and the surface roughness to deteriorate. |
| Workpiece clamping | |
| 1.Clamping method selection | Choose the appropriate clamping method according to the shape, size and processing requirements of the workpiece.For flat-plate workpieces, flat-nose pliers can be used for clamping; for shaft workpieces, V-shaped blocks can be used for clamping; for large and special-shaped workpieces, special tooling fixtures or pressure plate bolts may be required for fixing.For example, when machining a hole in a large irregularly shaped casting, a pressure plate bolt is used to firmly fix the casting on the workbench to ensure that the workpiece will not be displaced during the processing process. |
| 2.Clamping accuracy | When clamping the workpiece, ensure the positioning accuracy of the workpiece.When using fixtures such as flat-nose pliers, check the verticality of the fixed jaws of the flat-nose pliers and the machine tool table to ensure the accuracy of the position of the workpiece after clamping.At the same time, the clamping force should be moderate, not only to ensure that the workpiece does not move during the processing process, but also to prevent deformation of the workpiece due to excessive clamping force.For example, when clamping thin-walled parts, excessive clamping force will deform the parts, thereby affecting the cylindrical and positional accuracy of the processed holes. |
| Processing parameter setting | |
| 1.Cutting speed | Set the cutting speed reasonably according to factors such as tool material, workpiece material and tool diameter.For example, when using a high-speed steel drill bit to drill ordinary carbon steel, the cutting speed is generally 20-30m/min; when using a cemented carbide drill bit, the cutting speed can be appropriately increased.If the cutting speed is too high, it will cause increased wear of the drill bit, deterioration of the roughness of the machining surface, and may even cause the drill bit to break; if the cutting speed is too low, it will affect the processing efficiency. |
| 2.Feed volume | The size of the feed will also affect the processing quality.The appropriate feed amount can ensure the normal cutting of the drill bit and obtain good surface quality and dimensional accuracy.For small-diameter drill bits, the feed volume should be reduced accordingly to avoid the drill bit from breaking.For example, when drilling a hole with a diameter of 10mm, the feed volume is generally 0.1-0.2mm/r, which is more appropriate. |
| 3.Cutting depth | In the drilling process, the cutting depth should be reasonably set according to the size of the aperture and the material of the workpiece.For deep hole machining, a suitable graded feed method should be used to avoid the drill bit breaking due to poor chip removal.For example, when drilling deep holes with a depth greater than 3 times the diameter of the drill bit, the depth of cutting should not exceed 1/3 of the diameter of the drill bit each time, and the tool should be returned regularly for chip removal. |
| Equipment maintenance and accuracy testing | |
| 1.Daily maintenance | Carry out daily maintenance of the radial drilling machine, including cleaning, lubrication, etc.Regularly clean up the chips and dust on the surface of the machine tool to prevent it from entering the moving parts inside the machine tool.Regularly lubricate all moving parts, such as the guide rail of the radial arm and the guide rail of the head stock, to ensure the smooth movement of the machine tool.For example, after the work is over every day, wipe the surface of the machine tool with a clean rag, and fill the guide rail and other parts with lubricating oil. |
| 2.Accuracy detection and adjustment | Regularly check the accuracy of the machine tool, including the radial runout of the spindle, the motion accuracy of the radial arm, and the flatness of the workbench.If the accuracy is found to be too poor, it should be adjusted in time.For example, a dial indicator can be used to detect the radial runout of the spindle, and when the runout exceeds the specified value, the accuracy can be restored by adjusting the clearance of the spindle bearing, etc.At the same time, for severely worn parts, such as guide rail sliders, they should be replaced in time to ensure the machining accuracy of the machine tool. |
Shanghai ANTISHICNC is a professional manufacturer of radial drilling machine, we have rich experience in production and processing,can recommend the right radial drilling machine for your product, and give the right advice on the use of the radial drilling machine, can provide you with professional technical support. If you need radial drilling machine, welcome to contact Shanghai ANTISHICNC.Please send your inquiry or questions to contact@antsmachine.com for instant feedback.
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