Reversible Tapping Attachment TCNF

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Reversible Tapping Attachment TCNF

Auto Reversible Tapping Attachment TCNF

Reversible Tapping Attachment: TCNF

📌 Purpose:

The TCNF Tapping Attachment is a versatile, auto-reversible tapping tool designed to streamline internal threading operations across a wide range of machine setups. It’s especially popular in machine shops for its ability to handle both right-hand and left-hand tapping without requiring any modifications.

🏗️ Machine Compatibility:

Model TCNF Tapping Attachment can be seamlessly mounted on:

v  Drilling machines and Milling machines

v  Radial drilling machines [ In Manual Mode ]

🎬 Video Highlight Summary:

This video provides detailed instructions for operating a Model TCN tapping attachment, likely from a YouTube video transcript. It outlines the correct procedure for inserting a tap and securing it with the chuck nut. The instructions emphasize mounting the stop arm correctly and adjusting the torque using a cup nut and grub screw. Furthermore, the text offers guidance on identifying when a tap is dull, avoiding tap breakage, and properly engaging the clutch mechanism during operation to prevent damage. Overall, the content serves as a practical guide for using the Model TCN efficiently and safely.

🛠️ TCNF Reversible Tapping Attachment Technical Data

Model	Taper Shank	Tapping Capacity	Suitable Tap Adaptor	L	ØB	ØD	ØC	C1	Expansion	Approx Weight (Kg.)
TCNF-1	MT1 / MT2	3 – 10 mm (1/8” – 3/8")	QA-1	158 / 165	55	29	69	213	12	2.000 Kg./ 2.200 Kg.
TCNF-2	MT2 / MT3	6 – 16 mm (1/4” – 5/8")	QA-40	165 / 170	68	42	82	264	10	3.900 Kg./ 4.000 Kg.
TCNF-3	MT3	8 – 18 mm (5/16” – 3/4")	QA-40	170	68	42	82	264	10	4.400 Kg.
TCNF-4	MT3 / MT4	10 – 24 mm (3/8” – 1")	QA-3	255 / 260	96	72	105	319	15	7.700 Kg./ 8.000 Kg.
TCNF-5	MT4	14 – 30 mm (9/16” – 1-1/8")	QA-3	270	96	72	105	319	15	8.700 Kg.

📝 Important Ordering Note: > Each tap size requires a separate QA model tap adaptor. > When placing an order, please specify the following details: > - Tap Size > - Tap Shank Diameter > - Square Size [ TCNF Supplied without (QA) Tap Adaptor ].

Engineered for reliability, speed, and precision in high-performance tapping operations.

🤖 Smart Function:

🧭 Function	📖 Description	🎯 Benefit
📐 Dynamic Alignment Correction	Spindle float allows the tap to align naturally during entry	Ensures accurate, centered threading
🎛️ Smooth Thread Engagement	Reduces lateral forces at the start of tapping	Minimizes deflection and chatter
🔁 Pitch Variation Compensation	Adjusts for discrepancies between spindle feed rate and thread pitch	Prevents mismatch and thread distortion
🛡️ Tap & Thread Protection	Absorbs pressure variations and misalignments	Reduces tap breakage and improves finish
⚙️ Support for Harder Materials	Axial compliance eases stress during tapping in tough materials	Enhances tool life and threading reliability
🧲 Friction-Clutch Torque Control	Uses mechanical friction to regulate torque and disengage under excess load	Prevents tap over-torque and protects against breakage
🔧 Adjustable Torque Setting Mechanism	Operator can tune clutch to specific tap sizes and materials	Maximizes versatility and tap life

🔑 Key Advantages:

v  Universal Machine Fit: Works on all vertical drilling machines and milling machines with rotating spindles whether reversing or non-reversing.

v  Tap Compatibility: Accepts IS standard HSS tap sets.

v  Material Suitability: Optimized for ductile metals like MS and CI Casting, and also suitable for Low Carbon  Steel.

v  Cost-Efficient Tapping: Enables fast multi-size tapping at low cost with a single attachment.

v  User Requirement: For best performance, operation by a semi-skilled machinist is recommended.

v  High-Speed Output: Enables tapping faster than TCNRF Model and suited for rapid multi-size tapping at low cost.

v  Die Holder Model DH – Versatile Threading Solution: The Die Holder Model DH transforms a standard tapping attachment into a high-efficiency threading tool with a simple die-holder insertion. This smart integration enables dual-purpose functionality tapping and threading without changing machines. It’s a cost-saving, space-efficient choice for any machine shop aiming to boost productivity with minimal setup.

⚡️Quick & Easy Installation – Model TCNF:

v  The TCNF model features a smartly engineered Quick Change Tap Adaptor (QA) system that allows rapid and effortless tap replacement.

v  Adjust cup nut to control tapping load:

Ø  Turn clockwise to increase load (upgrade torque).

Ø  Turn anticlockwise to decrease load (downgrade torque).

v  Ensure Firm Workpiece Fixation During Tapping: Secure the job rigidly and firmly before tapping to prevent movement, ensure accurate threading, and avoid tool breakage.

v  Blind Hole – Drill Depth Recommendation: The drilled hole should be approximately 2 to 3 mm deeper than the required tapping depth. This extra depth provides clearance for the tap's lead-in point, ensuring accurate threading and preventing bottoming out.

v  Torque Bar TCNF (Mandatory For Reversing Mechanism) – Stopper Installation Possibilities: There are two possible methods for setting the stopper

Ø  Upper Side Installation: Mount a vertical rod on the Drill Setting Bar located on the upper side of the machine.

Ø  Bottom Side Installation: Mount a vertical rod in the T-slot at the bottom side of the machine.

v  Tapping Chamfer: A tapping chamfer is necessary to ensure proper thread formation and tool performance during the tapping process. It is the tapered portion at the front of a tap that gradually engages the material, distributing the cutting load across multiple teeth. This taper is essential for reducing stress on the tap, improving alignment, and producing clean, accurate threads.

Ø  The type of hole - Through or Blind - determines the appropriate chamfer style:

Ø  Long chamfers (Type B) are ideal for through holes and offer better surface finish and lower cutting pressure.

Ø  Medium chamfers (Type C) are standard for blind holes.

Ø  Short chamfers (Type E) are used when clearance is limited at the bottom of the hole.

🎯 High-Precision Features:

v  Reversible Operation: Taps right- or left-hand threads without any modification.

v  Tap Safety: Advanced clutch protects taps from breakage with ultra-sensitive overload response.

v  Improved Thread Quality: Axial float and cushioned drive prevent cross-threading and ensure gauge-perfect threads.

v  Rapid Retraction: Planetary reverse mechanism provides 50% faster retraction than the feed rate.

v  Consistent Depth Control: Neutral mechanism ensures precise tapping depth every time.

v  Production-Ready: Capable of handling both batch quantities and mass production with ease.

v  Amazing Tap-Changing Efficiency: The TCNF model features a smartly engineered Quick Change Tap Adaptor (QA) system that allows rapid and effortless tap replacement. This not only minimizes downtime but also enhances operational efficiency perfect for fast-paced production environments where time truly is money.

📐 Technical Operating Range:

v  Threading Speed: 150–700 RPM depending on material and tap condition (Always use coolant for finish-grade threads and longer tap life.)

v  Material Hardness: 50–60.5 HRA, 81–97 HRB, 0–20 HRC, [ Rockwell ]

v  Max. Tapping Depth: Up to 3× to 4× the tap diameter. [ Length × Diameter ]

v  Quick Change Tap Adaptor (QA) – Outer Diameter Specifications :

Adaptor Type	Outer Diameter	Compatible TCNF Model	QA, Approx Weight (Kg.)
QA-1	19 mm	TCNF1	0.100 Kg.
QA-40	26 mm	TCNF2 / TCNF3	0.300 Kg.
QA-3	48 mm	TCNF4 / TCNF5	1.000 Kg.

v  Mounting Shank Dimensions (MT Shank GP Dia):

Taper	Dia (inch)	Dia (mm)
MT1	0.475”	12.0650
MT2	0.700”	17.7800
MT3	0.938”	23.8252
MT4	1.231”	31.2674
MT5	1.748”	44.3992

🛠️ Maintenance Note:

To extend the life of this tapping attachment or any die head, die holder, or tap chuck avoid constant use at upper or lower limit capacities. Consider rotating between two or three units for heavy-duty applications.

🎯 "Intelligent Quick-Analysis Tool Designed For Discerning Business Customers." 🎯

 

🛠️ TCNF Model Reversible Tapping Attachment – Dimensional Range Smart Overview

Model	Taper Shank	Tapping Capacity	Suitable Tap Adaptor	TCNF - Approx Weight (Kg.)
TCNF-1	MT1 / MT2	3 – 10 mm (1/8” – 3/8")	QA-1	2.000 Kg. / 2.200 Kg.
TCNF-2	MT2 / MT3	6 – 16 mm (1/4” – 5/8")	QA-40	3.900 Kg. / 4.000 Kg.
TCNF-3	MT3	8 – 18 mm (5/16” – 3/4")	QA-40	4.400 Kg.
TCNF-4	MT3 / MT4	10 – 24 mm (3/8” – 1")	QA-3	7.700 Kg. / 8.000 Kg.
TCNF-5	MT4	14 – 30 mm (9/16” – 1-1/8")	QA-3	8.700 Kg.

 

🔩 TCNF Model Reversible Tapping Attachment – Quick Smart Summary

🔑 Key Features

v  Auto-Reverse Mechanism: Uses planetary gears for rapid and smooth tap retraction.

v  Axial Float: Allows the tap to self-align, improving thread accuracy and reducing breakage.

v  Ball-Clutch Safety System: Prevents tap damage by disengaging under excess torque.

v  Quick Tap Change: TCNF models feature a push-to-lock adaptor system for fast tool swaps.

v  Versatile Compatibility: Designed for vertical drilling machines with non-reversing spindles.

⚙️ Operating Highlights

v  Torque Adjustment: Controlled via a cup nut and grub screw for precise clutch calibration.

v  Through & Blind Hole Tapping: Supports both with neutral disengagement and depth control.

v  Lubrication & Maintenance: Requires periodic greasing (~every 600 hours) and cleaning of bearings/gears.

v  Cutting Fluid Use: Emphasizes high-pressure lubrication for heat dissipation and chip clearance.

📌 Safety & Performance Tips

v  Clamp workpieces securely never hold by hand.

v  Use sharp taps and monitor clutch slippage as an indicator of wear.

v  Recommended max operating speed: 700 RPM.

 

🔩 TCNF Model Reversible Tapping Attachment – Quick Smart Analysis

Aspect	Details
🔧 Type	Reversible Tapping Attachment TCNF – designed for high-speed tapping
⚙️ Function	Facilitates internal threading with automatic reverse for efficient operation
🔄 Mechanism	Features a reversing clutch that activates at thread depth
📐 Tap Range	Supports various tap sizes, typically from M3 to M30
🛠️ Applications	Suitable for blind and through hole tapping in industrial environments
✅ Advantages	High-speed performance – Reduces tap breakage – Enhances thread quality
🏭 Use Case	Drilling machines and Milling machines

v  Purpose: Automatically monitors tapping performance and detects anomalies such as torque spikes, misalignment, or dull tap behavior.

v  Functionality:

Ø  Evaluates tap engagement and withdrawal speed.

Ø  Assesses clutch response to prevent tap breakage.

Ø  Flags inconsistent thread profiles or feed mismatches.

v  Benefits:

Ø  Reduces downtime by identifying issues early.

Ø  Improves thread quality and tool life.

Ø  Supports predictive maintenance and operator feedback.

This feature is especially useful in high-volume or precision tapping environments where consistency and tool protection are critical.

 

TOOLS AND APPLIANCES CORPORATION

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Email :- taco@imitoolsindia.com, salestaco@imitoolsindia.com.