Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Equal-arc-length slotting method of non-circular gears

A non-circular gear and equal arc length technology, applied in the field of gear manufacturing, can solve problems such as troublesome clamping, low efficiency, and poor practicability, and achieve balanced and consistent tooth profile precision, high-efficiency and high-precision machining, and uniform distribution of cut marks Effect

Inactive Publication Date: 2016-01-13
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Non-circular gears are also called heterosexual gears. Their indexing surfaces are not rotating surfaces. They are used in construction machinery, machine tools, automobiles, aerospace and other fields. Non-circular gear transmission means that at least one pitch surface of a gear in the transmission is not a rotating surface. The gear transmission has obvious application advantages. In current industrial applications, wire cutting technology is often used to process non-circular gears. Wire cutting is not only inefficient, but also difficult to directly process non-circular helical gears without modification.
[0003] Gear shaping is an efficient method for processing non-circular gears. Chinese patent CN200810000133.3 discloses a method for processing non-complete circumferential gears with shielding. Gear shaping machines and special gear shaping cutters are used for processing, but due to the trouble of clamping, And it can only process specific non-circumferential gears, and the practicability is not strong; Chinese patent CN201220482831.3 discloses a gear processing fixture, but it is only suitable for batch slotting of thin and large gears, and has not been done for non-circular gears. Detailed introduction, difficult to achieve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Equal-arc-length slotting method of non-circular gears
  • Equal-arc-length slotting method of non-circular gears
  • Equal-arc-length slotting method of non-circular gears

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 2 , which shows the interlocking relationship of each axis in the method of inserting non-circular gears with equal arc lengths in the present invention. In the end face of the gear blank 1, the gear shaping cutter 2 is ω b rotation, gear blank 1 with ω c Rotation, in order to ensure the pure rolling of the 2 pitch circle of the gear shaper cutter and the 1 pitch curve of the gear blank in the same direction during the slotting process, within the end surface of the gear blank 1, ω b with ω c Maintain a strict transmission ratio according to the requirements of generating motion. In the axial plane of the gear blank 1, in order to maintain the inscribed contact between the pitch circle of the gear shaping cutter 2 and the curve of the gear blank 1 pitch, the gear shaping cutter 2 acts as v x Movement, axial reciprocating slotting v z , so that all teeth are slotted, in order to ensure uniform precision of the tooth surface along the axis, v z with ω b...

Embodiment 2

[0042] see Figure 7 , which shows the interlocking relationship of each shaft on the end surface of the tooth blank in the method of inserting the external meshing non-circular gear with the same arc length of the tooth blank in the present invention. The rest is the same as the first embodiment, the difference is that the gear shaper cutter 2 is located outside the curve of the first pitch of the gear blank, and the rotation direction of the two is opposite. Based on the above method and according to the principle of differential geometry, the linkage equation of external meshing non-circular spur gear or helical gear is established as follows:

[0043] v x = [ r d r d θ + r b ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
modulusaaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of numerical control machining of gears and relates to an equal-arc-length slotting method of non-circular gears. Through the equal-arc-length slotting method of the non-circular gear, a workbench, gear blanks, a main shaft and a gear slotting cutter are used, wherein the workbench is used for driving the gear blanks to rotate; the main shaft drives the gear slotting cutter to rotate; a gear slotting cutter divided circle is tangent to a gear blank section curve and is capable of purely rolling; the gear slotting cutter moves along an X-axis direction in the plane to form the gear blank section curve; the gear slotting cutter moves along a Z-axis direction to form the whole-tooth depth of the gear blanks; the gear slotting cutter or the gear blanks are also capable of additionally rotating; the gear blanks also carry out equal-arc-length movement relative to a machine tool in the end surfaces of the gear blanks; other shafts are linked relative to the machine tool. The equal-arc-length slotting method is capable of slotting internally-meshed non-circular straight gears and bevel gears and is also capable of slotting externally-meshed non-circular straight gears and bevel gears; the gear blanks are also capable of additionally rotating during slotting the bevel gears; through the equal-arc-length slotting method, the purpose of processing the non-circular gears with high efficiency and high accuracy can be achieved; compared to other methods, the machining efficiency is highest under the requirement of same accuracy.

Description

technical field [0001] The invention belongs to the field of gear manufacturing, in particular to the field of gear manufacturing on wheels with varying working radii, and relates to a method for slotting a tooth blank of a non-circular gear with equal arc lengths. Background technique [0002] Non-circular gears are also called heterosexual gears. Their indexing surfaces are not rotating surfaces. They are used in construction machinery, machine tools, automobiles, aerospace and other fields. Non-circular gear transmission means that at least one pitch surface of a gear in the transmission is not a rotating surface. The gear transmission has obvious application advantages. In current industrial applications, wire cutting technology is often used to process non-circular gears. Wire cutting is not only inefficient, but also difficult to directly process non-circular helical gears without modification. [0003] Gear shaping is an efficient method for processing non-circular ge...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23F5/12
Inventor 刘有余李军刁杰胜
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com