Standardised items conform to international standards such as ISO, DIN, VDI, NAAMS, etc, or to certain brand names such as Fibro, Dayton, Misumi, amongst other. Piercing punches, dies, pilot punches, and several others fall into this category. Standardized items are important because it makes design, replacement and re-ordering easy, but most importantly, parts are a first-time fit. Nothing is as frustrating as getting a part and then having to ‘fix” it to get it to fit. there’s no more guessing if parts have to be designed around an h7, g6 or ±0.01 mm fit.
Several other parts are made to certain standards although these might be brand specific. These include parts like CNC punches (Trumpf, Amada, etc), pillars and bushes to name a few. Parts can be catalogued and ordered by code or specific design.
Our standardized parts include the following:
Our own brand of FANG® punches are high endurance precision-made parts. Base materials that are more compatible with certain coatings are used rather than traditional steels, and these steels are still tough, chip resistant and of high strength to handle punch stresses. Punches can be supplied as straight or with stepped tips, in un-coated or coated form.
- Shoulder Punch (Dayton/Misumi Standard)
- Heavy Load (Dayton/Misumi Standard)
- Countersunk Head (Fibro DIN 9861)
- Cylindrical Head (Fibro ISO 8020) (aka Cheese Head)
- Round Head (Fibro DIN 9844)
- Trombone Head
- Ball-lock punches
- Custom punches
We can also provide modified parts with special tips, bevels, custom diameters or lengths, etc. We can supply you with your requirement without you having to modify a standard items to suit your specific needs.
The following coatings are available to improve life typically by 3 – 5 times or more:
TD: keep cutting edges sharper for longer and highly resistant to pick-up and wear. The coated punches can also be sharpened and re-used. The high bonding strength of the coating ensures it remains on the sharp cutting edge without peeling, while the flank wear resistance is maintained.
PVD: PVD coated punches are specified when using highly precision punches. PVD coatings is also are highly resistant to pick-up and adhesion. PVD coatings of TiCN, TiAlN and TiN is available.
If punch life is lower than expected or excessive flank wear is found, we have found 99% of the time the punch-to-die clearance is incorrect. Low coating performance is a direct indicator of incorrect clearance. For more on punch clearance, see our Fang catalogue.
Cluster punches, straight punches or stepped punches that will fit Trumpf, Armada and other machines, or are a replacement for Mate parts. Since these punches see high volumes work, a special base metal is used for very high endurance together with a surface coating.
As part of the FANG® range, ourdies are engineered for high durability and chip resistance and to keep the cutting edge sharper for longer, They can be ordered uncoated or with coating and are exceptionally durable even when punching difficult materials such as stainless steels. The dies can be re-sharpened as the coating is only required to keep the sharp cutting edge and reduce piercing drag. Dies are made to ISO 8977 or as required.
Pilot punches are used to locate parts accurately and thus should be used with tight tolerances. However, this increases the tendency for pick-up, sticking or galling. A pilot made with the correct material and with the correct coating does not have this issue. Our pilots show extreme wear resistance, parts slide and locate easily. Critical dimensions of the pilot are also maintained for longer which assists in producing consistent parts. Our pilots are also part of the FANG® range.
Our burring punches maintain the sharpness of the piercing tip, while coatings ensure the part is highly resistant to pick-up and scoring on the forming edge. Resistance to pickup on the extruded/ironed flanks of the part also increases tap life if extruded holes are subsequently tapped.
Locating pins are used for accurately placing and locating parts. Our coated parts are very resistant to wear, scoring and loss of dimensions on the pins. Where consistent accuracy is required, such as in high precision welding operations, our range of locating pins should be used. TD has proven to be the best coating for this application.
Locating pins can be supplied to the NAAMS standard of TiN coated items. And even though we have higher temperature PVD in South Africa, our parts still conform with regards to the required hardness profiles.
Ejector Pins/Knockout Pins
Our ejector pins are generally made from hot work tool steel due to its inherent toughness but are not only for hot applications. Pins are supplied either coated or uncoated depending on customers requirements. Nitriding, TiN or TiAlN-Nano are mostly used for a smooth, anti-stick sliding surfaces. With the coatings/treatments, it also helps prevents wear on the ejector hole. Custom ejectors can be made such as flat blade ejectors, HSS ejectors and special diameter and length items.
Similar to ejector pins, knockout pins are used in cold to warm applications (~400 °C). With a higher base metal hardness of 58 – 60 HRc, the pins can take high stress without deforming. Pins are coated for extreme resistance to wear and pick-up, and to ensure smooth sliding and long life.
Ceramics come in different forms, one being a non-conductive, highly wear resistant type which shows high thermal shock resistance and is highly resistant to weld spatter. These ceramic weld pins show exceptional performance in projection welding. The picture shows steel vs ceramic pins even after welding 12 000 parts, with the ceramic pin showing no wear versus the steel pin which had reached end of life. Request more info here.
Custom Manufactured Parts
In addition to our standard parts, the TD Coating Centre can also manufacture custom made parts. These can either be modifications to existing standard parts or as per your required spec. All that is required is to provide us with a drawing and a description of the operation and/or problems experienced. See our custom manufacture page. We will engineer the part where necessary in order to offer you a cost effective solution. Email us a drawing.