Chương 4: Mài Khôn
Chương 4: Mài Khôn
Honing machines are metal abrading tools and process utilizing
hard tooling and perishable abrasives stones for the correction of
– Diameter
– Shape
– Surface finish
– Positional tolerances of bores
The hone process was developed to allow for perfection of bore
geometry, size control, final surface finish and surface structuring.
The honing process provides the final sizing and creates the
desired finish pattern on the interior of tubing or cylinder bores.
Finishing is accomplished by expanding abrasive stones of suitable
grit and grade against the work surface. The stones are rotated
and reciprocated in the part with hone abrasive under controlled
pressure. Combining rotation and reciprocation produces a cross-
hatch pattern in the surface of the part being honed.
Chương 4: Mài Khôn
Why Honing?
Cost effective machining method
for..
•Removing stock
•Generating exacting
•Bore tolerances
•Bore polishing
•Finishing bores of almost any material such a: sprayed coatings,
CGI, Ceramics, etc.
Chương 4: Mài Khôn
Define The Honing (Process):
•The honing process provides the final sizing and creates the
desired finish pattern on the interior of tubing or cylinder bores.
Finishing is accomplished by expanding abrasive stones of
suitable grit and grade against the work surface. The stones are
rotated and reciprocated in the part with hone abrasive under
controlled pressure. Combining rotation and reciprocation
produces a cross-hatch pattern in the surface of the part being
hon
4.1. Bản chất và đặc tính của Mài
Khôn (honing)
•Gia công tinh lỗ nhờ đầu khôn quay tròn và tịnh tiến dọc trục.
•Thay dụng cụ mài nghiền và bột mài bằng đầu khôn mang
các thỏi đá.
•Áp lực đầu khôn và hành trình lên xuống đầu khôn được thực
hiện: Tốc độ khôn dùng cho gang, đồng thau: 60 - 70 (m/p);
cho thép: 40 - 60 (m/p) áp lực: 0,35 - 1,4 (MPa)