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VIII Keyway broach
Published: 2015-11-13

Main sizes comparison of four keyway broaches-太阳集团娛乐城20056.COM

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2. The structure  andcharacteristics of keyway broach

2.1 The structure  and basic sizes of keyway broach

(1) Round cutter keyway broach:The cutter body is made into the shape of cylinder matching with holes (see picture6-34a).  High precision , difficultmanufacture and poor universality of it make it be usedless.-21320011.com

(2) Rectangular cutter keywaybroach: The cutter body is rectangle using guide sets of positioning (seepicture b), it has crossing accuracy but good universality , the keyway withdifferent aperture and key-wideth can be made by the same broach, the keyway inthe taper hole can also be made,see picture (6-34c). Rectangular cutter keywaybroach has had some standards, the structure types are categorized in threekinds, widened flat cutter body, flat cutter body and inverted triangle toothtype.-www.138t.com

(1)  widened flat cutter body keyway broach (GB/T14329-93) see picture 6-35. The width of the keyway b=(3-10)mm, the width ofcutter body B>b,  the stiffness ofbroach increases. The structure and sizes of wide cutter keyway broach ,seediagram 6-76www.138t.com

 Diagram7-76 the structure and sizes of wide cutter body keyway broach