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

Equal-polar-angle gear slotting method of gear blanks of non-circular gears

A non-circular gear, equal polar angle technology, applied in the field of gear manufacturing, can solve the problems of low efficiency, difficult to process non-circular helical gears, difficult to implement, etc., to achieve increased operation speed and accuracy, efficient and high-precision machining, and reduce error sources. Effect

Inactive Publication Date: 2016-01-13
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, wire cutting technology is widely used in the manufacture of non-circular gears. Wire cutting machine tools have a wide range of processes and strong adaptability, but their efficiency is extremely low, and they are only suitable for single-piece and small-batch production
In addition, new processing methods such as electric sparks and lasers have emerged. Like wire cutting, these methods are not only inefficient, it is difficult to process non-circular helical gears without modification, and they are only suitable for processing gears with special materials or extremely thin thickness.
Precision forging technology can efficiently process non-circular helical gears, but there is no technical accumulation in the processing of related molds and the measurement of molds and gears
In addition, 3D printing and rapid prototyping technology can theoretically manufacture non-circular helical gears, but the method of stacking thin layers is difficult to meet the mechanical properties required for gear transmission
With the continuous popularization and application of non-circular gears, special processing methods are difficult to meet a large number of demands
[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. The gears are special and fixed, so the practicability is not strong. Chinese patent CN201220482831.3 discloses a gear processing fixture, but due to the cumbersome clamping and no detailed introduction to non-circular gears, it is difficult to realize

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-polar-angle gear slotting method of gear blanks of non-circular gears
  • Equal-polar-angle gear slotting method of gear blanks of non-circular gears
  • Equal-polar-angle gear slotting method of gear blanks of non-circular gears

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 2 , which shows the interlocking relationship of each axis in the method for inserting non-circular gears with equal polar angles of the gear blank 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 ...

Embodiment 2

[0042] The method of the present invention slots the internal meshing third-stage elliptical helical gear, and the rest is the same as the first embodiment, the difference is that the tooth blank 1 speed ω c Additional rotary motion Δω c , the linkage equation of internal meshing slotting non-circular helical gear is:

[0043] v x = r d r d θ - r b j s i n μ d r d θ - rr b j ...

Embodiment 3

[0049] 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 externally meshing non-circular gear with equal polar angles 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 is established as follows:

[0050] v x = r d r d θ + r b j ...

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-polar-angle gear slotting method of gear blanks of non-circular gears. Through the equal-polar-angle gear slotting method of the gear blanks of the non-circular gears, 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 blanks carry out equal-polar-angle 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-polar-angle gear 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-polar-angle gear slotting method, the purpose of processing the non-circular gears with high efficiency and high accuracy can be achieved; detection elements are not needed; the error sources are reduced; the calculation process is simple; the operation speed and accuracy of CNC (Computer Numerical Control) are greatly increased.

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 gear shaping method for non-circular gear blanks with equal polar angles. Background technique [0002] At present, wire cutting technology is widely used in the manufacture of non-circular gears. Wire cutting machine tools have a wide range of processes and strong adaptability, but their efficiency is extremely low, and they are only suitable for single-piece and small-batch production. In addition, new processing methods such as electric sparks and lasers have emerged. Like wire cutting, these methods are not only inefficient, it is difficult to process non-circular helical gears without modification, and they are only suitable for processing gears with special materials or extremely thin thickness. . Precision forging technology can efficiently process non-circular helical gears, but there...

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