Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof

A herringbone gear, no undercut technology, applied in the direction of belt/chain/gear, gear teeth, components with teeth, etc. The effect of large carrying capacity and low noise

Inactive Publication Date: 2015-08-05
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gears without grinding wheel overtravel grooves cannot be ground and finishe

Method used

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  • Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof
  • Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof
  • Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Design conditions: herringbone gear module m n =3.5mm, pressure angle α n = 20°, , headspace coefficient c * =0.25, number of teeth z=31, tooth width B=210mm, helix angle β=30 0 , B l =B r =70mm, B a = 70mm.

[0066] Reference Design

[0067] The geometric dimensions are as follows: indexing circle diameter d 1 =125.28mm, addendum height h a =3.5mm, dedendum height h f =4.375mm, full tooth height h=7.875mm, curvature radius ρ of arc segment a =40.42mm.

[0068] (2) Herringbone gear grinding and finishing

[0069] 1) A forming grinding wheel is installed on the main shaft of a CNC gear grinding machine or a multi-axis linkage CNC machining center, and the two sides of the forming grinding wheel are designed to be the tooth profile shape of the left-handed or right-handed alveolar sides of the herringbone gear to be ground.

[0070] 2) The herringbone gear with coarse grinding allowance and groove is installed on the workbench of the CNC gear grinding machin...

Embodiment 2

[0084] Design conditions: herringbone gear module m n =3.5mm, pressure angle α n = 20°, , headspace coefficient c * =0.25, number of teeth z=31, tooth width B=210mm, helix angle β=30 0 , B l =B r =78.75mm, B a =0.25B=52.5mm.

[0085] (1) Reference design scheme

[0086] The geometric dimensions are as follows: indexing circle diameter d 1 =125.28mm, addendum height h a =3.5mm, dedendum height h f =4.375mm, full tooth height h=7.875mm, curvature radius ρ of arc segment a = 30.31mm.

[0087] (2) Herringbone gear grinding and finishing

[0088] 1) A forming grinding wheel is installed on the main shaft of a CNC gear grinding machine or a multi-axis linkage CNC machining center, and the two sides of the forming grinding wheel are designed to be the tooth profile shape of the left-handed or right-handed alveolar sides of the herringbone gear to be ground.

[0089] 2) The herringbone gear with coarse grinding allowance and groove is installed on the workbench of the CN...

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Abstract

The invention discloses an arc spiral line mixed herringbone gear without tool withdrawal groove. The gear comprises a herringbone gear body, a plurality of herringbone gear wheel teeth are formed on the herringbone gear body, herringbone tooth groove is formed among herringbone gear wheel teeth, and the herringbone gear wheel teeth is orderly composed of a herringbone gear right rotating wheel tooth, a herringbone gear arc wheel tooth and a herringbone gear left rotating wheel tooth section; two sides of the herringbone gear wheel tooth are the herringbone gear wheel tooth concave tooth surface and the herringbone gear wheel tooth convex tooth surface; a processing method for arc spiral line mixed herringbone gear without tool withdrawal groove is also disclosed, the herringbone gear is characterized of being big in contact ratio, stable in meshing transmission, low in noise, big in bearing capability and compact in structure; the arc spiral line mixed herringbone gear without tool withdrawal groove is suitable for occasions such as ship power, airline mechanical transmission, overloaded vehicle engineering high overloading with close restraint on structure size of gear case.

Description

technical field [0001] The invention belongs to the field of transmission machinery, and in particular relates to a circular-arc-helical mixed type herringbone gear without undercut and a tooth grinding method. Background technique [0002] The meshing contact of helical gears is a process in which one end of the tooth enters into mesh and exits from the other end of the tooth. The length of the contact line of the tooth profile gradually increases from zero, and then gradually shortens until the process of disengagement, that is, when the front end of the tooth profile When the faces are out of mesh, the rear face of the tooth profile is still in mesh. Therefore, the change of load along the tooth width direction is also a gradual process. Helical gears have many pairs of gears meshing at the same time, and the degree of overlap is large, so the helical gear transmission runs more smoothly, has a strong bearing capacity, and has less noise and impact, and is suitable for h...

Claims

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Application Information

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IPC IPC(8): F16H55/08F16H55/17B23F7/00
CPCB23F7/00B23P13/02B23P15/14F16H55/08F16H55/17F16H2055/086
Inventor 沈云波王建华刘玄王俊岭王丽君
Owner XIAN TECHNOLOGICAL UNIV
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