Rough machining method of helical surface of hourglass worm

Rough machining method of helical surface of hourglass worm

  • CN 101,700,576 B
  • Filed: 10/21/2009
  • Issued: 05/08/2013
  • Est. Priority Date: 10/21/2009
  • Status: Active Grant
First Claim
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1. the rough machining method of helical surface of enveloping worm, it is characterized in that, comprise enveloping worm (1), lathe tool (2), lathe tool graticule (3), worm axis (4) and with the lathe tool axis of rotation (5) of worm axis (4) vertical interlaced and the common vertical line (6) of two axial lines, worm axis (4) and lathe tool axis of rotation (5) meet at respectively an O and O '"'"' with common vertical line (6), centre-to-centre spacing OO '"'"' can control variation, lathe tool (2) is upper by lathe tool graticule (3) and the left side of some O '"'"', right point of a knife point N, M is in the plane determined by worm axis (4) and common vertical line (6), point of a knife point N, M is R about the radius of gyration of lathe tool axis of rotation (5) d, according to the Forming Theory of plane, single conical surface, Double-conical-surface, toroid enveloping worm with involute helicoid generatrix and two freedom degree straight line ring surface worm, obtaining the corresponding centre-to-centre spacing OO '"'"' time radius of the same helicla flute of enveloping worm (1) is R danchor ring and the left and right helicoid of disalignment section on a series of corresponding points L i, R iposition coordinates (x li, y li, z li), (x ri, y ri, z ri), the sequence number that wherein i is whole shaft sections, these serial corresponding points are forwarded to respectively in the plane determined by worm axis (4) and common vertical line (6), calculate lathe tool (2) upper left and right point of a knife point N, the M enveloping worm (1) during serial corresponding points coincidence and a series of corresponding rotary position angle of lathe tool graticule (3) therewith respectively be respectively ? with between divide stepping by the rotary position angle of enveloping worm (1) and lathe tool graticule (3), the point of a knife between lathe tool (2) upper slitter cusp N, M progressively turning to go out enveloping worm (1) at engaging-in end and nibble out between end radius when same helicla flute is at current centre-to-centre spacing OO '"'"' be R danchor ring on part, along with centre-to-centre spacing, OO '"'"' constantly reduces, it is whole that turning goes out same spiral fluted, after minute tooth, repeats said process and obtain other helicla flute.

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