Rough machining method of helical surface of hourglass worm

Rough machining method of helical surface of hourglass worm

  • CN 101,700,576 A
  • Filed: 10/21/2009
  • Published: 05/05/2010
  • 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 the perpendicular staggered lathe tool axis of rotation (5) and the common vertical line (6) of two axial lines, worm axis (4) and lathe tool axis of rotation (5) meet at an O and O '"'"' respectively with common vertical line (6), centre-to-centre spacing OO '"'"' can control variation, lathe tool (2) is gone up a lathe tool graticule (3) and the left side by some O '"'"', right point of a knife point N, M in plane by the decision of 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 shaping principle of plane, single conical surface, bipyramid face, 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 enveloping worm 1 same helicla flute 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), wherein i is the sequence number of whole shaft sections, these serial corresponding points are forwarded in the plane that is determined by worm axis 4 and common vertical line 6 to the enveloping worm 1 when the respectively serial therewith corresponding points of left and right point of a knife point N, M overlap on the calculating lathe tool 2 and a series of corresponding rotary position angle of lathe tool graticule 3 respectively Be respectively With Between divide stepping with 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, the M progressively turning go out enveloping worm 1 at engaging-in end and when nibbling out between the end same helicla flute at current centre-to-centre spacing OO '"'"' radius be R dAnchor ring on part, OO '"'"' constantly reduces along with centre-to-centre spacing, it is whole that turning goes out same spiral fluted, divide tooth after, repeat said process and obtain other helicla flute.

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