Каталог Sumitomo резьбонарезной инструмент - страница 11

• How to Replace Shims

1 2 3 4

ShimShim Shim set screwShim set screw

Recommended Recommended tightning torquetightning torque 1.0–1.5 N1.0–1.5 N・・mm

lead angle. torque: 1.0 to 1.5 N/m)

• About Wiper Edges

Without wiper edge With wiper edge

Work material Work material

F

Finishing allowance Wiper edge Grooving Insert (without wiper edge) Insert (with wiper edge) Cut-Off

• The grooves of the thread are machined while leaving the crest untouched.
• Thread shapes conforming to the screw specifications can be machined.

Threading (The machined surface from the previous operation remains) Only specific thread specifications and pitch can be machined.

• You can machine a thread with different pitch widths with the same insert

In order to finish a thread with the wiper edge, a finishing allowance of

• In the process before threading, it is necessary to finish the workpiece with 0.1mm per side is required. the specified external diameter (or internal diameter) Sharp thread peaks can be round off.
• Sharp threads are easily formed
• About Cutting Methods We recommend modified flank infeed machining as a cutting method for SSTE type and SSTI type. With this cutting method, chip curl diameter is smaller, it is possible to stabilize chip control, and you can suppress the trailing edge damage that commonly occurs with radial infeed machining. (We recommend a 1° modified angle)
• Effects of infeed methods on chip shapes ×

Work material: SUS316 M30 1.5 Cutting conditions: Vc = 60 mm/min Wet 8 pass machining

Modified flank infeed Radial infeed machining

Leading edgeLeading edge Trailing edgeTrailing edge

Feed direction 50mm Feed direction 50mm

Small curl diameter and stable chip control Large curl diameter and unstable chip control