Mold bases and mold plates contain guide-post holes, guide-bushing preparation holes, locating holes, dowel holes, mounting holes, threaded-hole preparation, cooling channels, blind holes, stepped holes, and repeated hole patterns.
These components are commonly manufactured from pre-hardened mold steel, tool steel, cast iron, stainless mold steel, or aluminum tooling plate. Their large dimensions, substantial drilling depths, repeated hole layouts, and varying entry conditions increase the risk of hole-position variation, chip packing, cutting-edge wear, drill deviation, and inconsistent blind-hole depth.
Landun CNC Tool supports drill selection and custom carbide drill development based on the mold drawing, workpiece material, plate thickness, hole diameter and depth, tolerance, entry surface, coolant method, and current machining problem.
Mold bases, backing plates, support plates, and clamping plates often contain repeated guide holes, locating holes, dowel holes, mounting holes, and bolt patterns that must maintain stable spacing and position across a large component.
Large plate dimensions, fixture movement, machine positioning variation, uneven entry surfaces, excessive drill runout, and accumulated tool wear can affect hole location and repeatability.
Stable drill-point geometry, low-runout toolholding, rigid workholding, and consistent edge preparation help improve entry stability and repeated-hole accuracy. A short spotting operation may also be used where the plate surface does not provide reliable drill centering.
Pre-hardened mold steel and tool steel can cause rapid flank wear, cutting-edge chipping, rising cutting load, unstable hole diameter, or inconsistent tool life during batch drilling.
Material hardness, alloy content, local hardness variation, cutting heat, insufficient coolant delivery, and unsuitable edge preparation can accelerate coating wear and cutting-edge damage.
Wear-resistant coatings, controlled edge preparation, stable point geometry, and suitable carbide grades help improve cutting-edge strength and tool-life consistency. Drill geometry should be selected according to material hardness, drilling depth, coolant condition, and machine rigidity.
Deep mounting holes, guide-related holes, threaded-hole preparation, and blind holes in thick mold plates may experience chip congestion, rising cutting load, poor hole surfaces, depth variation, or drill breakage.
Long drilling depth, limited flute capacity, insufficient coolant pressure, excessive runout, unsuitable drilling cycles, or chips remaining at the bottom of the hole can interrupt normal chip evacuation.
Through-tool coolant, suitable flute geometry, stable coolant pressure, and controlled drilling parameters help move chips away from the cutting edge. Longer holes may also require a pilot hole, rigid toolholding, and controlled entry and withdrawal.
Mold plates may contain long cooling channels, water passages, intersecting channels, inlet and outlet holes, and deep passages requiring stable hole straightness and reliable intersection with the designed channel position.
High depth-to-diameter ratios, inaccurate pilot holes, excessive runout, unstable coolant pressure, machine misalignment, and chip congestion can cause drill deviation or prevent passages from intersecting correctly.
An accurate pilot hole, low runout, stable machine rigidity, through-tool coolant, and a controlled deep-hole drilling procedure help improve channel straightness and chip evacuation. Drill length and geometry should be selected according to the plate thickness and passage layout.
Mold bases and mold plates may require stepped holes, shallow counterbore-related features, flat-bottom blind holes, locating shoulders, combined diameters, and drilling-plus-chamfering operations.
Producing these features with several separate tools can introduce accumulated positioning errors, inconsistent depth, shoulder variation, additional tool changes, and longer machining cycles.
Step, flat-bottom, chamfer, and combination carbide drills can produce multiple related features in fewer operations. This helps improve concentricity, shoulder position, depth control, and production efficiency.
Common drilling applications include mounting holes, locating holes, bolt holes, dowel holes, threaded-hole preparation, blind holes, and repeated hole patterns in pre-hardened mold steel, cast iron, or aluminum tooling plate.
Typical features include guide-post preparation holes, guide-bushing holes, dowel holes, locating holes, alignment holes, return-pin holes, and other precision positioning features.
Typical applications include mold-clamping holes, mounting holes, screw-clearance holes, threaded-hole preparation, bolt-circle patterns, blind holes, and combined drilling-and-chamfering features.
Common features include straight cooling channels, long water passages, cross holes, intersecting channels, inlet and outlet ports, plug-hole preparation, and deep blind passages.
For mounting holes, locating holes, dowel holes, threaded-hole preparation, blind holes, and general production drilling in mold bases, support plates, backing plates, and clamping plates.
For small locating holes, vent holes, lubrication holes, small pin holes, compact mold features, and other small-diameter precision applications.
For long cooling channels, water passages, deep guide-related holes, and high depth-to-diameter drilling in thick mold bases and mold plates.
For stepped holes, flat-bottom holes, combined diameters, drilling and chamfering, special lengths, angled entry, and drawing-based non-standard features.
| INFORMATION | WHY IT MATTERS |
|---|---|
| Mold or plate drawing | Confirms hole positions, repeated patterns, cooling-channel layout, step features, tolerances, and special requirements. |
| Workpiece material and hardness | Helps determine carbide grade, drill geometry, edge preparation, coating, and cutting parameters. |
| Plate thickness | Helps determine the required working length, drilling-depth series, rigidity, and coolant configuration. |
| Hole diameter, depth, and type | Defines drill size, depth-to-diameter ratio, and blind-, through-, step-, or flat-bottom-hole requirements. |
| Entry, exit, and intersection conditions | Helps evaluate entry stability, breakthrough impact, cross-hole intersections, and internal burr risk. |
| Position, diameter, and straightness tolerances | Helps assess drill selection, pilot-hole requirements, runout control, and inspection needs. |
| Machine, holder, fixture, and coolant conditions | Helps evaluate rigidity, spindle runout, workholding stability, coolant pressure, and chip evacuation. |
| Current machining problem | Clarifies tool wear, chip packing, drill deviation, hole variation, breakage, burrs, or cycle-time targets. |
Review the component drawing, workpiece material, hole structure, machine conditions, and current drilling problem.
Select a suitable standard drill series or develop a custom drill based on hole depth, tolerance, entry conditions, and machining requirements.
Produce the drill with controlled geometry, edge preparation, coating selection, and multi-stage inspection to support consistent quality.
Support sample testing, specification confirmation, and stable repeat production after the drill solution is approved.
Walter 5-axis grinding supports stable drill-point geometry, flute consistency, diameter accuracy, and shank concentricity.
Controlled edge preparation helps improve cutting-edge consistency, coating adhesion, wear resistance, and tool-life stability.
Coating selection is matched to the workpiece material and drilling conditions to improve wear resistance, heat control, and cutting stability.
HELICHECK PLUS and 150× / 300× visual inspection help verify dimensions, cutting edges, coating appearance, and overall tool condition.
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