This guide documents machining specifications for Ingun cartridge fixtures, addressing drilling and pocketing operations for common receptacle installations. These parameters are optimized for FixturFab's manufacturing processes.
Drilling Operations#
Ingun KS-550 WL (Press-Fit)#
Two-step drilling process for wireless receptacle mounting:
First Operation:
- Drill diameter: 1.0mm
- Depth: Through entire plate
- RPM: 15,000
- Feed rate: 700 mm/min
- Cycle: Chip-breaking (peck drill)
- Coolant: None
Second Operation:
- Drill diameter: 1.05mm
- Depth: To collar depth (2.6mm offset from surface)
- RPM: 15,000
- Feed rate: 700 mm/min
- Cycle: Chip-breaking
- Coolant: None
The stepped hole provides interference fit at depth while allowing collar clearance at the surface.
Ingun KS-075 WL (Press-Fit)#
Single-operation drilling:
- Drill diameter: 1.4mm
- Configuration: Through-hole
- RPM: 15,000
- Feed rate: 700 mm/min
- Cycle: Chip-breaking
- Coolant: None
Ingun KS-100 WL (Press-Fit)#
Single-operation drilling:
- Drill diameter: 1.75mm
- Configuration: Through-hole
- RPM: 15,000
- Feed rate: 700 mm/min
- Cycle: Chip-breaking
- Coolant: None
Pocketing Operations#
All component pocket operations use standardized parameters:
Tooling#
- Endmill: 2mm flat endmill
- All pocket operations use this standard tool
Parameters#
| Parameter | Value |
|---|---|
| Spindle speed | 15,000 RPM |
| Cutting feed rate | 800 mm/min |
| Maximum roughing stepdown | 0.5mm |
| Entry method | Helical ramp |
| Ramp angle | 2° |
Notes#
- Feed rates are conservative due to CNC machine limitations
- Chip management is critical—use chip-breaking cycles
- Helical ramping prevents tool shock during pocket entry
- Maintain consistent tool engagement throughout multi-pass operations
General Machining Guidelines#
Material Considerations#
Standard cartridge plate materials:
- G10/FR4 — Glass-reinforced epoxy laminate
- MDF — Medium-density fiberboard (development cartridges)
- Acetal — For custom components
G10 requires carbide tooling and produces abrasive dust. Ensure proper dust collection and tool monitoring.
Quality Verification#
After machining:
- Verify hole diameters with pin gauges
- Check pocket depths with depth gauge
- Confirm receptacle fit (press-fit should require light force)
- Inspect for burrs requiring deburring
Tool Wear Monitoring#
For G10/FR4 materials:
- Inspect drill points every 50 holes
- Replace drills showing wear or producing oversized holes
- Track tool life to establish replacement intervals
Related Documentation#
- Ingun Guidelines — Fixture design for Ingun systems
- Receptacles Guide — Receptacle specifications
- Cartridges — Cartridge material options