Precision Grooving tool - Page 1
Forum section: electronics / general

author: xzswq21
author_rank: Frequent Contributor
timestamp: November 03, 2021, 11:46:16 am
content: HelloThe cross section of turning tools is 8x8: (unfortunately in our country I couldn't find 8x8 turning toolset, they only have 16x16 and 20x20 tools)For the turning tools I have chosen a 8x8 toolset from WABECO:https://www.wabeco-remscheid.de/catalog/category/view/s/drehstahl-satze/id/638/?product_list_limit=32but I have a problem. as you see in the below picture I need a precision grooving tool to make such slots with a 1.5mm width, 0.7mm depth and 0.02mm Accuracy.I found a precision grooving tool at page 3 (from Graf-Werkzeugsysteme in Germany):https://www.phorn.co.uk/fileadmin/user_upload/media/PDF/2015_Catalogue_Sub-Sections_EN/Carbide_Grooving_Tools_Chapters/S274.pdfbut I couldn't contact the company because they only accept a company email.Does anyone know such a precision grooving tool?Thanks

author: Carel
author_rank: Regular Contributor
timestamp: November 03, 2021, 03:09:22 pm
content: Just buy the 8*8 10 euro parting tool in the link and go grinding. That's life in turning.For a 1.5 mm "precision groove" you need a tool of 1.3-1.4 mm width. Dig in and finish left and rigth.The precision is not in the tool, it is in the operator.https://www.wabeco-remscheid.de/rund-ums-drehen/abstechstahl-halter.html

author: xzswq21
author_rank: Frequent Contributor
timestamp: November 03, 2021, 05:01:01 pm
content: Quote from: Carel on November 03, 2021, 03:09:22 pmI didn't show you the complete design. The groove is very accurate. When you want to produce thousand of things and another country must evaluate the accuracy and the quality, it's better to use a reliable tool.

author: mc172
author_rank: Frequent Contributor
timestamp: November 03, 2021, 05:21:14 pm
content: You don't specify whether it's +/- 0.02 mm or 0.02 mm in total, so I will assume the former as it's the most generous case.The tolerance of those Horn inserts is +/- 0.02 mm which is your entire tolerance budget. There is an additional +/- 0.015 mm indexing tolerance. The datasheet doesn't specify which axes this affects, just "indexability length". There is also no tolerance on the position of the grooving width relative to the reference plane, which could be this "indexability length" they're on about.So clearly relying on the tool geometry to achieve tolerance is not the way to go.That said, Horn tools are good quality and I like them. I've bought used holders from eBay before and bought new inserts from local tooling places.

author: Benta
author_rank: Super Contributor
timestamp: November 03, 2021, 05:58:46 pm
content: What Carel said. You use a narrower tool and go in zigzag-wise.

author: Carel
author_rank: Regular Contributor
timestamp: November 03, 2021, 06:41:40 pm
content: QuoteYou should'nt play hide and seek. One does'nt need the design to advise on a tool. "Very accurate" makes me doubt that very design, it is a flexible term. If you want to outsource, you have to come up with shop language.If you yourself can't decide on the quality and of course the proof of concept, but depend on another country for quality raises other questions. Start near, go far. Start far, fall near.

author: Smokey
author_rank: Super Contributor
timestamp: February 07, 2022, 06:30:49 am
content: For the highest in precision... Here is the link to generic Chinese ebay 1.5mm grooving tool!1.5mm Carbide Insert MGMN150-G + MGEHR1010-1.5 groove cutt-off Lathe Tool holderhttps://www.ebay.com/itm/165161178616This thing actually does a decent job in my decidedly un-precision garage shop.