XRZ APPLICATION NOTE · PCD PROFILE MILLING
PCD Tooling for Aluminum Scroll Compressor Plate Machining
From a documented four-edge PCD tool concept to scroll-profile machining, inspection planning and controlled repeat supply.
XRZ Precision supports cutting-tool distributors, OEM/ODM buyers and machining teams with drawing review, tool design, sample validation and repeat-order control.
Start with the component geometry—not a catalogue tool
The documented project used a four-edge PCD milling tool. Reach, clearance, engagement, holder interface and the released drawing define the tool concept before cutting data is finalized.
Thin walls turn profile milling into a system problem
Tool runout, projection, cutting force, heat, chip evacuation, fixture support and release after unclamping must be reviewed together. A visually clean surface alone does not prove the profile-to-bottom relationship.
Review before the trial
- Blank route, allowance distribution and fixture support
- Spiral geometry, wall height, reach and datum relationship
- Measured assembled runout and permitted projection
- Coolant route, chip evacuation and acceptance method
These are customer targets recorded for this project, not a public capability claim.
Translate the drawing into a controlled cutting assembly
Sharp PCD cutting action is only one part of the result. Tooth count, chip space, tool projection, holder interface, fixture response and datum-specific inspection must stay connected.
PCD edge
Match edge geometry and preparation to alloy, stock and finish target.
Four-edge load
Evaluate tooth count with engagement, chip space and wall excitation risk.
Controlled reach
Provide access without adding unnecessary bending length.
Measured assembly
Control actual runout and projection, not the holder label alone.
Fixture release
Review deformation during cutting and after unclamping.
Separate criteria
Assign datum, method and acceptance record to each requirement.
Define acceptance before the first sample is cut
XRZ aligns the drawing revision, inspection scope and feedback record with the trial plan so a machining result can become a controlled engineering decision.
- 01
Drawing and datum review
Confirm profile, bottom, holes, datums, GD&T and finish requirements.
- 02
Trial measurement plan
Agree the instrument, method, sampling and responsible party.
- 03
Wear and process feedback
Record part results, edge condition and parameter or geometry changes.
- 04
Release decision
Approve, revise or stop against the defined acceptance route.
Freeze the approved definition before the next order
The supplied project record confirms batch supply and achievement of the customer’s mass-production process requirements. Detailed capability and tool-life records remain customer-controlled.
- 01
Application review
Lock drawing, material, machine, holder, fixture, coolant and inspection scope.
- 02
Tool concept and trial
Issue proposed geometry, interface, starting conditions and risks.
- 03
Measured feedback
Record results and approved changes against the acceptance method.
- 04
Reorder definition
Control drawing revision, inspection, identification, packaging and change approval.
Solid Carbide Drills
Pre-holes, suitable blind/through holes and controlled burr requirements.
PCD Reamers
Suitable locating holes and precision bores after pre-hole review.
Start with the drawing and the feature that must improve
Incomplete information is acceptable for the first discussion. Mark unknown items so XRZ can focus the engineering questions.
Part and quality
- 2D drawing, revision and 3D model
- Moving or fixed scroll; alloy, temper and blank route
- Profile, hole and datum requirements
- Inspection, burr and cleanliness limits
Machine and commercial
- Machine, spindle interface, reach and runout
- Current tool, allowances and failure description
- Trial quantity, annual volume and timing
- NDA, distributor/OEM, labeling and packaging
Plate holes still decide scrap—not only the scroll profile
Scroll compressor plate work often focuses on the profile. On many prints the locating, oil, fastening and sealing holes set the scrap risk first. Treat plate holemaking as its own process: pre-hole quality, finishing allowance, silicon content and datum strategy before you lock a PCD or carbide path.
Plate-hole pain points
- Thin-wall breakout and exit burr on Al plates
- Position / diameter band drift across a nest
- High-Si cast aluminum abrading carbide edges
- Mixed clearance vs fit-critical holes on one plate
Tolerance & Al–Si notes
State alloy / silicon band, hole Ø + tolerance, depth, blind vs through, and which holes are fit-critical. High-silicon aluminum usually needs a different edge and coolant plan than wrought Al—do not copy a catalogue feed as a guarantee.
Tool CTAs
Solid carbide drills or aluminum carbide drills create the hole; PCD reamers finish when the bore band and surface callout require it. Confirm via sample validation, then engineering RFQ.
Questions before a scroll-plate tooling review
Can we use the project cutting data directly?
No. It documents one ZLD113 project with a specific tool, holder, fixture and machine context.
Does XRZ manufacture complete scroll plates?
No. This page concerns custom cutting tools and application engineering.
Should every scroll feature use PCD?
No. Tool material and process must be selected by feature, alloy, geometry, quality requirement and validated economics.
What controls a repeat order?
The approved tool drawing, revision, inspection scope, identification, packaging and change approval.
How should we treat plate holes vs the scroll profile?
Separate them in the RFQ. Profile milling and holemaking rarely share the same tool, coolant or acceptance table. Send hole Ø, tolerance, depth and which holes are fit-critical alongside the profile notes.
When is a PCD reamer preferred after a carbide drill on Al–Si plates?
When diameter band, roundness or surface finish on fit-critical bores will not hold with the drill alone—especially on abrasive high-silicon aluminum. Validate allowance and pre-hole quality first; see the PCD reamer path and sample validation.
What holemaking data speeds a scroll-plate quote?
Alloy / Si band, hole map (fit vs clearance), Ø + tolerance + depth, coolant method, current scrap mode (oversize, burr, position), and whether you want drill-only, drill+ream or combination review. Use the custom cutting tool RFQ.
CUSTOM PCD & CARBIDE TOOLING
Discuss your scroll-plate machining constraint
NEXT STEP — CORE TOOLS & RFQ
Specify the finished hole / face requirement, then choose the conversion path: