Page 15 - 《橡塑技术与装备》英文版2025年12月

SPECIAL AND COMPREHENSIVE REVIEW

Figure 9 Self-made tool HH211011

Figure 8 Self-made Tool Drawing

Table 1 Record of optimization of self-made boring tool body
Optimization Count Existing Problems Optimize Location Optimized Results
The side surface of the tool body is not The side surface of the tool body is perpendicular
perpendicular to the cutting edge. After
the first time clamping, the contact area between the cutting Main inclination angle of the tool body to the cutting edge, facilitating tool alignment and
increasing the contact area between the cutting
edge and the part is small, which cannot achieve edge and the part.
the function of smoothing the tool.
The blade height is higher than the center of the The height of the cutting edge is consistent with
the second time part, causing vibration during machining and Blade thickness the center height of the part, eliminating tool
affecting the surface roughness of the part. vibration.
The clearance angle of the tool body is small, Increase the clearance angle after installation, and
the third time so during machining, the rear face of the insert Tool body clearance tilt the bottom surface of the tool body by 3° when
contacts the part first. installing the insert
the fourth time There is a slight chipping phenomenon during Blade installation position Elimination of reverse tool breakage phenomenon
the machining process.
cutting edge angle (see Table 1) to ensure that the tool can Previously, it took up to 40 hours to grind the inner hole of a
achieve optimal cutting effects and stability during processing. barrel. Now, with the use of precision boring, the processing
Through this series of tool optimization measures, we time for two holes in a single barrel section is only 4 hours,
have successfully improved the efficiency and quality of a reduction of nine times. This not only greatly shortens the
double-hole machining for machine barrels. This not only production cycle but also reduces the operational costs of the
reduces machining costs but also enhances product quality and enterprise.
competitiveness. Furthermore, it is worth mentioning that the originally
We have continuously experimented and verified separate step of machining the flat grinding reference plane
various cutting tool parameters. After multiple rounds of can now be completed concurrently with the hole machining.
fine adjustments and optimizations (see Table 2), we have This improvement not only simplifies the machining process
finally achieved a breakthrough in the processing method of but also saves 4 hours of time that would otherwise be required
"boring instead of grinding". Now, the straightness, roundness, for reference milling on the machining center machine tool.
parallelism, and plane perpendicularity of the double holes This not only enhances equipment utilization but also further
in the machine barrel processed using this method can be shortens the overall machining cycle and improves overall
precisely controlled within 0.02 mm, and the surface roughness production efficiency.
of the double holes has reached a high-quality level of Ra0.8 Overall, the optimization of tool cutting parameters
μm or less, fully meeting the strict standards required by the and the successful application of the "boring instead of
drawings. grinding" processing method have not only improved the
The achievement not only signifies a significant processing quality and efficiency of barrel parts, but also
improvement in the quality of the barrel components, but more brought significant economic benefits to the enterprise. This
importantly, it also marks a leapfrog in processing efficiency. achievement not only reflects our innovation ability and

Vol.51，2025 ·9·