Thread turning
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Indexable insert drills Circular and Thread Milling Thread turning Turning Tools Grooving Tools Solid carbide drilling Miniature turning tools Solid Carbide milling cutters Milling tools with indexable inserts Rotating toolholders Tool Holders

Thread turning Introduction WNTMASJERmTable of contents Symbol explanation 2 Technical Information: Pitch angle 15 Thread turning methods 17 WNTMASTERTOOL Premium quality tools for high performance. The premium quality tools from the WNT Mastertool Performance product line have been designed for specific applications and are distinguished by their outstanding performance. If you make high demands on the performance of your production and want to achieve the very best results, we recommend the Premium tools in this product line. Flank angle 30° (Trapezoidal thread) BSW British...

Thread turning WNT Toolfinder WNT Toolfinder Thread / Flank angle External Internal ■ a better quality thread ■ no burr formation ■ no finishing operation ■ higher tool life Profile Type Description ■ Thread diameter must not be turned to final thread size ■ a minimum infeed of 0.07 mm is necessary ■ Insert can only be used only for a specific pitch Profile Type Description ■ Thread diameter must be pre-machined to finished size ■ a minimum infeed of 0.07 mm is necessary ■ one insert can produce several thread sizes ■ Threading insert for universal application UltraMini TiN and TiAlN...

Thread turning Full profile Full profile Cast iron Non ferrous metals o Heat resistant alloys ^ vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required. Cast iron Non ferrous metals o Heat resistant alloys ^vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required.

Thread turning Full profile Right hand internal thread turning insert ■ Full profile Cast iron Non ferrous metals Heat resistant alloys ^ vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required. Cast iron Non ferrous metals Heat resistant alloys

Right hand internal thread turning insert Thread turning Full profile Cast iron Non ferrous metals Heat resistant alloys ^ vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required. Steel Stainless steel Cast iron Non ferrous metals Heat resistant alloys ^vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required.

Thread turning Full profile Full profile Stainless steel Cast iron Non ferrous metals Heat resistant alloys

Thread turning Full profile ■ Full profile ■ Trapezoidal thread DIN 103 Cast iron Non ferrous metals Heat resistant alloys ^ vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required. Cast iron Non ferrous metals Heat resistant alloys ^vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required.

Thread turning Partial profile Right hand internal thread turning insert ■ Partial profile Cast iron Non ferrous metals Heat resistant alloys ^vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required.

Thread turning Partial profile Right hand internal thread turning insert ■ Partial profile Cast iron Non ferrous metals Heat resistant alloys ^vc Page 16 1) Neutral version (N) - for right and left hand thread applications. Neutral Toolholder marked (U) is required.

Thread turning Tool holder Standard External Thread Turning Holder Tool Holder with Approach Angle ß = 1,5° 2° h1 Left-hand Designation Neutral insert indicated by marking (N) Clamping screw Shims for correction of helix angle see page → Page 14.

Thread turning 1 Tool Holder with Approach Angle B = 1,5° 1) without shim 2) Neutral insert indicated by marking (N) Clamping screw Shims for correction of helix angle see page -

Thread turning Tool holder 1 Tool Holder with Approach Angle B = 1,5° 1) with shim seat 2) Carbide version Clamping screw Spare parts For Article no. Shims for correction of helix angle see page ^Page 14.

Thread turning Shims Shims for Standard Threading Inserts Pitchangle P 1) Neutral version for tool holder identified by (U).

Thread turning Technical Information Important Information about Standard Shims ■ the pitch angle should be determined through calculation or by using the chart below ■ the standard WNT threading holder is supplied with a 1.5 ° inclined insert seat and a shim without angular correction. Hence the WNT Tool holders are delivered with an angle of inclination p of 1.5 °. Without the appropriate correction of the helix angle, the following may occur ■ the profile will be distorted. ■ insufficient clearance angle. ■ the tool life of the insert is greatly reduced. Calculating the helix angle p:...

Thread turning Cutting Data The cutting data depends extremely on the external conditions, the material and machine type. The indicated values are possible values which have to be increased or reduced according to the application conditions.

Thread turning Technical Information External right-hand thread External left-hand thread ft] jj— © The machining examples 2, 4, 6 and 8 require negative shims! These shims can be found on ^ Page 14. Internal left-hand thread Thread infeed methodsRadial Infeed Flank infeed Alternating infeed ■ for pitches less than 1.5mm ■ for short chipping materials ■ for machining hardened materials ■ simple and quick method ■ for pitches larger than 1.5mm ■ with radial penetration the effective cutting edge length is too large, which may lead to chattering ■ with trapezoidal and ACME threads, chip flow...

Thread turning Technical Information Troubleshooting Edge chipping Built-up edge Common in stainless materials Incorrect grade Minimize tool overhang length Check that the insert is clamped Minimize vibration Use a tougher grade Common in stainless materials Cutting speed too high Incorrect grade Apply coolant Reduce depth of cut Use a harder grade Cutting speed too low Incorrect grade Apply coolant Increase cutting speed Use a tougher grade Thermal cracking Plastic deformation Insufficient coolant Cutting speed too high Incorrect grade Infeed too large Insufficient coolant Cutting speed...