First, optimize the machining sequence.

Prioritize small-diameter or deep holes before machining the larger intersecting holes. This approach allows the subsequent machining of the larger hole to remove most of the burrs formed at the intersection point of the smaller hole.

Properly sequence drilling and reaming/boring operations: Employ “Drill-Enlarge-Ream” or “Drill-Bore” processes, leaving sufficient finishing allowance to correct the geometry at the intersection and remove burrs during the final finishing stage.

Second, utilize specialized cutting tools and advanced technologies.

Use internal-coolant drills: High-pressure coolant is delivered directly to the cutting edge through the tool shank, providing powerful cooling and forcing chips out of the flutes; this is the preferred solution for chip evacuation and cooling issues in deep intersecting holes.

Use step drills or parabolic drills: These types of drills feature larger flute volumes, offer better control over chip shape, and facilitate smoother chip evacuation.

Introduce scraping or chamfering tools: Immediately after the drilling operation, use specialized intersecting-hole deburring tools (such as radial scrapers with pilots) to remove both internal and external burrs in a single machine setup, achieving efficiency far superior to manual methods.

Finally, optimize machining parameters and tool paths.

Reduce feed rate and increase spindle speed: When the tool is about to break through the intersection zone, use programming techniques such as “reduced feed rate” or “feed pause” to allow the drill tip to gently “kiss” the intersecting edge, significantly reducing burr formation.

Employ peck drilling cycles: For deep intersecting holes, use peck drilling (G73/G83 cycles) to implement incremental feeding and full chip retraction, ensuring chips are effectively broken and evacuated.

Chinese factory for machined metal parts

Digital Platforms:You can directly upload CAD files to the iprecisioncnc or iprecisionparts platforms to design, price, and order custom steel or aluminum parts.

To help narrow down the best factory or platform for your project, please let me know:

What type of metal are you using (aluminum, steel, brass, titanium)?

What is the estimated quantity you need (prototype vs. large production run)?

Protolabs: Offers fast 3-axis and 5-axis CNC milling, turning, and finishing services with parts delivered in as fast as one day.

Do you already have a CAD file or drawing ready?

Advantages of Choosing Us:

1）Produce high quality CNC machined parts at the lowest cost;

2）Strict delivery on time

3）Due to the wide variety of clients we serve, we have extensive experience in producing a wide range of products;

4）Professional customer support in multiple languages;

5）Processing inquiry details, CNC machining, manufacturing, processing, service examples, case studies;

6）Competitive advantage: We are good at setting up and programming machines easily for new jobs;