A CNC Drill and Tap Centre produces accurate hole patterns and threads, where position accuracy and chip evacuation decide whether the part passes inspection. This page covers the CNC Drill and Tap Centre configured with a rotary table for indexed hole patterns and supplied to tool and die shops: CNC drilling, rigid tapping and boring with peck cycles for chip control. The headline figure is drilling capacity to 40 mm in steel, and the rest of the page explains what it means in daily use.
In practice the difficulty is rarely the nominal size. hole position ±0.05 mm is held on the features that locate the part in the assembly, and the process is set up so that the first piece and the five hundredth measure the same way.
Specification
| Process | Cnc drilling, rigid tapping and boring with peck cycles for chip control |
|---|---|
| Material / configuration | a rotary table for indexed hole patterns |
| Size / capacity | drilling capacity to 40 mm in steel |
| Tolerance | hole position ±0.05 mm |
| Surface finish | drilled or reamed finish, H7 where specified |
| Application | cnc drill and tap centre for tool and die shops |
| Inspection | Dimensional report, material certificate, first article report on request |
| Lead time | 7–15 working days for samples, 3–4 weeks for production |
| Minimum order | 1 piece for prototypes, from 50 pieces for production pricing |
Manufacturing process
Production begins with a drawing and material review. Stock is certified, the operation sequence is fixed, and CNC drilling, rigid tapping and boring with peck cycles for chip control is carried out on equipment maintained to hold hole position ±0.05 mm over a full shift, not just on a first piece.
Material is purchased against a certificate and checked on receipt, so the composition is known before any cutting starts. Work in progress is identified by part number and operation, and the finished parts are deburred, cleaned and protected before they leave the machine area.
Typical applications
Most of the work supplied in this category falls into the following examples.
- Flange bolt circles.
- Manifold port drilling.
- Mould cooling channel drilling.
- Structural steel connection plates.
- Heat exchanger tube plates.
Quality control and documentation
Inspection is not a final formality. Dimensions are checked during the cycle and again at the end, so drift is corrected while there is still stock to remove.
Material certificates to EN 10204 3.1, dimensional reports and first article inspection reports are issued with the shipment where the application requires them. Calibration dates and measurement uncertainty are recorded alongside every result.
Ordering, lead time and packaging
Orders start from a single piece. Samples are quoted from the 3D model, and production pricing follows once quantity, finishing and inspection are agreed.
Frequently asked questions
How accurate are drilled hole positions?
Position is normally held within 0.05 mm, and reaming or boring brings size to H7. Spotting the hole first and using a rigid setup matters more than spindle speed.
Can you drill deep holes without drifting?
Yes, with gun drilling and high pressure coolant. Depth to diameter ratios above 10:1 need guided tooling and controlled pecking rather than a standard twist drill.
Do you keep tooling and programmes for repeat orders?
Fixtures, tool lists and verified CAM programmes are retained for the life of the part number, so a repeat release runs on the same setup as the first batch without a new proving run.
Send the drawing or the 3D model for a quotation. Include material, quantity, tolerance and finish, and a detailed quote with lead time is returned within one working day.
