In-Die Tapping Units (FTU)

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Sydney Sims
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1 In-Die Tapping Units (FTU)

2 In-Die Tapping Units FIBRO In-Die Tapping Units allow the production of threads in a progressive die. This avoids additional expensive processes outside the die tool. The modular design of these FIBRO In-Die Tapping Units with flexible components allows a custom adaptation to any tooling situation. Furthermore, one or more threads can be tooled simultaneously at angles other than 90. FIBRO In-Die Tapping Units can therefore be utilised in a broad spectrum of applications. All of the basic components are quickly and easily removed and can be reused in other tools. A sophisticated design and the use of robust parts guarantee a long life cycle and production reliability of all FIBRO In-Die Tapping Units. Threads are cold formed, not cut, which eliminates swarf. Cold formed threads are more durable than cut threads, as the grain structure of the material is not interrupted. FIBRO In-Die Tapping Units can produce threads up to M16. And by selecting the right components for the job, stroke rates of up to 200 strokes/min (depending on thread diameter) can be achieved. Advantages of FIBRO In-Die Tapping Units: no additional processes required for threading modular, flexible design Threads can be produced in any angle position Several threads produced simultaneously Robust and safe mechanical solution Examples for Application (see below): Left: Two FTUs in one progressive die. Right: Five FTUs with 14 chucking heads in one progressive die. Below: Sample parts Pricing & Delivery Times: On request FIBRO 2 subject to alteration

3 In-Die Tapping Units Functional Principle & Mode of Operation: When the FTU is integrated into a progressive die, the press stroke is transformed via the toothed rack and drive unit into a rotational movement. This rotational movement is then transferred to the chucking head via the drive mounted drive wheel and intermediate wheels. The press stroke provides the feed motion for the chucking head. The FTU is elastically supported to provide pitch compensation and spring pressure for gating the thread. Spring Unit Gearbox Types: FIBRO FTUs are classed into various types. Select an FTU to match the size and number of threads to be produced. FTU 10 for threads M2 to M4 4 x M2, 4 x M3, 4 x M4* Spindle Tap Toothed Rack Bearing Drive Wheel Toothed Rack * Recommended values, depending on material, thread length, forming speed FTU FTU FTU 11 FTU 20 FTU 21 FTU 30 FTU 30P FTU 40 FTU 40P for threads M2 to M4 5 x M2, 4 x M3, 3 x M4* for threads M2 to M5 4 x M4, 3 x M5* for threads M2 to M4 pivoted/ 3 x M2, 3 x M3, 3 x M4* for threads M5 to M6 2 x M5, 1 x M6* for threads M5 to M8 pivoted/ 2 x M5, 2 x M6, 1 x M8* for threads M6 to M6 2 x M6, 1 x M8* for threads M6 to M8 reinforced 3 x M5, 2 x M6, 1 x M8* for threads M8 to M16 2 x M8, 1 x M10, 1 x M12, 1 x M16* for threads M8 to M16 reinforced 4 x M8, 2 x M10, 1 x M12, 1 x M16* Multiple Tapping: By adding more gearwheels and chucking heads, several - even different - threads can be formed simultaneously (or with the next cycle) in one single FTU. The type table provided contains recommended values for max. numbers of threads for each of the FTUs indicated. Multiple Tapping in a progressive die: Drive Wheel subject to alteration FIBRO 3

4 In-Die Tapping Units FTU 10, FTU 20, FTU 30, FTU 30P /.20 /.30 /.30P Drive Wheel Gearbox stroke + 10 min. height w. tool closed mm * see 'Tables & Formulae' ** Recommended values, depending on material, thread length, forming speed Type Art. No.: Thread max. number of threads for multiple tapping** d 1 d 2 d 3 l 1 l 2 l 3 l 4 l 5 l 6 l 7 l 8 d 4 d 5 d 6 m 1 m 2 min. distance between two threads FTU M2 - M4 4 x M2 / 4 x M3 / 4 x M4 66 / M20 M6 36 FTU M5 - M6 2 x M5 / 1 x M6 70 FTU M6 - M8 2 x M6 / 1 x M / 72 / M24 x 1.5 M8 48 FTU 30P P M6 - M8 3 x M5 / 2 x M6 / 1 x M8 50 / FIBRO 4 subject to alteration

5 In-Die Tapping Units FTU 10-25, FTU / Drive Wheel Pneumatic Spring Unit stroke + 10 min. height w. tool closed mm * see 'Tables & Formulae' ** Recommended values, depending on material, thread length, forming speed Type Art. No.: Thread max. number of threads for multiple tapping** d 2 l 1 l 2 l 3 m 2 min. distance between two threads FTU M2 - M4 5 x M2 / 4 x M3 / 3 x M M6 50 / 72 FTU M4 - M5 4 x M4 / 3 x M M8 25 subject to alteration FIBRO 5

6 In-Die Tapping Units FTU 11, FTU / Drive Wheel Gearbox Pneumatic Spring Unit * see 'Tables & Formulae' ** Recommended values, depending on material, thread length, forming speed Type Art. No.: Thread max. number of threads for multiple tapping** d 1 d 2 d 3 l 5 l 6 l 7 d 4 d 5 d 6 min. distance between two threads FTU M2 - M4 3 x M2 / 3 x M4 66 / / 72 / 92 FTU M5 - M8 2 x M5 / 2 x M6 / 1 x M8 60 / FIBRO 6 subject to alteration

7 In-Die Tapping Units FTU 40, FTU 40P / P Drive Wheel Gearbox stroke + 10 min. height w. tool closed mm * see 'Tables & Formulae' ** Recommended values, depending on material, thread length, forming speed Type Art. No.: Thread min. distance max. number of threads for multiple tapping** d 1 d 2 l 1 l 2 l 3 l 4 l 5 between two threads FTU M8 - M16 2 x M8 / 1 x M10 - M / / 100 FTU 40P P M8 - M16 4 x M8 / 2 x M10 / 1 x M subject to alteration FIBRO 7

8 In-Die Tapping Units Spring units: Depending on application, mechanical spring units for FTUs 10, 20, 30, and 30P (helical compression spring) should be replaced with pneumatic springs. For the FTUs 11, and 21, only double-action spring units can be used. The FTUs 40 and 40P come with a single-action pneumatic spring unit as standard. Single-Action Pneumatic Spring Unit for thread diameters M2-M4 Single-action pneumatic spring unit for thread diameters M5-M8 Double-Action Pneumatic Spring Unit for thread diameters M2-M4 Double-action pneumatic spring unit for thread diameters M5-M8 FIBRO 8 subject to alteration

9 In-Die Tapping Units Tables & Formulae: The press stroke required for a rotation of the tap is calculated with the values provided in the following table. Other transmission ratios can be provided for non-standard models. FTU FTU 10 FTU 20 / 30 / 30P FTU 40 / 40P Drive wheel diameter (d 1 ) Transmission ratio T recommended for thread sizes M2 - M3.5 M3.5 - M5 M5 - M6 M6 - M8 M10 - M12 M14 - M16 Overall length Z (marked as Z* in the type diagrams) changes depending on thread diameter and the associated standard length tolerances of the tap. Adjustments in regards to the relevant tool situation can be carried out via the spacer washer. Thread FTU10-25 / FTU 10 / 20 / 30 / 30P FTU 40 / 40P Z Z Z R M M M M M M M M M M M M Please use the following formulae to calculate the press stroke required for tapping and the entire process. Spacer washer Feed Angle Required press stroke C a for feeding with a feed angle of 90 : C a = C t x : C a = C t x 0.25 Z (open tool) variable height 180 : C a = C t x 0.5 N = S / P N t = N + 3* C = N t x T C t = C + C a C m = 2 + N t x P S Length of thread P Thread pitch N No. of tap rotations N t Overall no. of tap rotations * Rotations for tap gating T Transmission ratio C Press stroke for tapping C a Press stroke for feeding C t Overall press stroke Tap stroke C m subject to alteration FIBRO 9

10 In-Die Tapping Units Core Hole Diameter for Formed Threads: Due to material displacement, core hole diameters are larger than in thread cutting. The core hole diameters provided here are guideline values only. The actual core hole diameter is to be determined during production, as it is dependent on the flowability of the material used, as well as the speed in which it can be formed. Metric ISO Threads Nominal Inclination Core hole ø thread ø P min. max. M M M M M M M M M M M M M M M Ml M M M M Metric ISO Fine Threads Nominal Core hole ø Nominal Core hole ø thread ø x P min. max. thread ø min. max. M2 x M9 x M2.2 x M9 x M2.3 x M10 x M2.3 x M10 x M2.5 x M10 x M2.5 x M10 x M2.6 x M11 x M2.6 x M11 x M3 x M12 x M3 x M12 x M3.5 x M12 x M3.5 x M12 x M4 x M13 x M4 x M13 x M4.5 x M13 x M5 x M14 x M5 x M14 x M5.5 x M14 x M6 x M14 x M6 x M15 x M7 x M15 x M7 x M15 x M8 x M16 x M8 x M16 x M8 x M16 x M9 x FIBRO 10 subject to alteration

11 In-Die Tapping Units Information Request for FIBRO by phone: +49 (0) by Company: Contact Name: Department: Street: ZIP, City: Customer No.: FTU: q FTU 10 q FTU 20 q FTU 30 q FTU 30P q FTU 40 q FTU 40P q FTU 11 q FTU 21 q FTU 40 q FTU 40P Telephone: Fax: Workpiece Drawing: q yes q no CAD Data: q 2D q 3D Thread (D) / Number: Material: Tensile Strength (N/mm²): Sheet Thickness S (mm): Rim Hole Radius R (mm): Press Type: Overall Press Stroke (mm): No. Strokes/min: Feeder Type: Feed Angle: Comments: subject to alteration FIBRO 11

12 Standard Parts FIBRO GmbH Geschäftsbereich Normalien August-Läpple-Weg DE Hassmersheim Phone +49/6266/73-0 Fax +49/6266/ DE FIBRO France FR Département Éléments Normalisés 19/21, rue Jean Lolive FR Bagnolet Téléphone +33/1/ Télécopieur +33/1/ FIBRO Inc. US Business Unit Standard Parts 139 Harrison Avenue US-Rockford, IL Phone +1/815/ Fax +1/815/ FIBRO Asia Pt. Ltd. SG 121 Genting Lane 2nd Floor SG-Singapore Phone +65/68/ Fax +65/68/ FIBRO INDIA STANDARD PARTS PVT. LTD. IN Antaral Society, Sanganna Dhotre Marg. Ganeshkhind Road Pune Phone Fax info@fibro-india.com 02/2009 Copyright FIBRO GmbH Printed in Germany on paper bleached without chlorine Art. No

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