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Address: 1178 Zhaizishan Road, Huangdao District, Qingdao City, Shandong Province
Phone: +86-15063986252
Whatsapp: 8615063986252
Email: lucas@ruiliftools.cn
Replaceable-Head Drills and Spade Drills: What Is the Difference?
Release Time:
Jul 28,2024
Compare replaceable-head and metalworking spade drills by cutting-component design, holder compatibility, application requirements and replacement procedure.
News Summary
Replaceable-head drills and metalworking spade drills both allow a worn cutting component to be replaced while retaining a suitable holder or body. Their connection designs and replacement parts differ. In this article, crown drill refers to a replaceable-head metal-cutting drill, not a diamond or a piece of jewellery.
Cutting Component and Holder
A replaceable-head drill uses a cutting head matched to a particular drill body. Its locating surfaces and locking arrangement are specific to the tool system. A metalworking spade drill uses a replaceable blade-shaped insert in a matching holder; it should not be confused with a flat woodworking spade bit.
Neither name defines one universal geometry, substrate or coating. Check the catalogue designation and application guidance for the exact component being considered.
Compatibility Comes Before Replacement
Confirm the holder series, insert or head model, diameter range and connection size. Two cutting parts with the same nominal diameter are not necessarily interchangeable. Use the specified assembly method and tightening instructions, and inspect the mating surfaces before returning the tool to service.
Compare Them on the Same Operation
Use the actual workpiece material and condition, hole diameter and depth, machine interface, coolant supply and drawing requirements as the comparison basis. Establish whether the hole is blind or through and whether subsequent finishing is required.
Do not assume that one design is always cheaper, faster or more accurate. Compare acceptable holes produced, replacement cost, changeover time and any finishing work under equivalent conditions.
Conclusion
The practical difference is the cutting-component and holder design, not appearance or jewellery terminology. Select a matched assembly using the application requirements, then verify the proposed process against the drawing.
See Ruilif's modular drill system guide for information to include in an enquiry.
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Ruilif Tools (Qingdao) Co., Ltd.
Founded in 2011, Ruilif Tools (Qingdao) Co., Ltd. manufactures modular drill bodies, replaceable cutting heads and custom hole machining tools.
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