Multi-layer-Multi-ball Magnetic Positioning Tooth Pitch Template and Its Magnetic Design Method

A technology of magnetic positioning and tooth pitch, which is applied in the field of standard instruments, can solve the problems that cannot be assembled into different forms of tooth pitch templates, and achieve the effects of simplifying the structure, reducing processing and manufacturing costs, and avoiding measurement errors
CN109365924BActive Publication Date: 2019-08-30CHONGQING ACAD OF METROLOGY & QUALITY INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING ACAD OF METROLOGY & QUALITY INST
Publication Date
2019-08-30

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Abstract

The invention relates to a multilayer-multiball magnetic positioning type tooth pitch sample plate which comprises a base with an upper surface as a base plane. At least two layers of positioning holes are sequentially and annularly distributed around the center of a centering cylinder / circular ball / cone on the base plane at intervals from inside to outside; the center of each positioning hole oneach layer of positioning holes is located on a circular curve by adopting a horizontal projection of the center of the centering cylinder / circular ball / cone as a center and the radius of a divided circle of a virtual gear as a radius in the base plane; the hole number of each layer of positioning holes is equal to the tooth number of the corresponding virtual gear; chamfers alpha for placing detecting balls are arranged at the opening ends of the positioning holes; the detecting balls and the centering cylinder / circular ball / cone are made of iron-containing materials; and magnetic positioningdevices for attracting and fixing the detecting balls onto the base are arranged in the base. The invention further provides a magnetic force design method applied to the multilayer-multiball magnetic positioning type tooth pitch sample plate. According to the multilayer-multiball magnetic positioning type tooth pitch sample plate and the magnetic force design method thereof provided by the invention, tooth pitch sample plates with different forms can be assembled according to the measurement demand, and relevant parameters meeting the magnetic force demand can be quantitively designed.
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Description

technical field

[0001] The invention relates to the technical field of standard instruments, in particular to a tooth pitch template used for transmission of tooth pitch values. Background technique

[0002] High-precision gears play a key role in advanced manufacturing fields such as aerospace, high-speed rail, automobiles, aircraft, and ships, and are important basic components for precise transmission. The quality of gear manufacturing depends on the testing level of gears, and the testing level of gears requires standard gear templates for evaluation. The latest international gear precision standard ISO1328-1:2013 emphasizes that pitch deviation is one of the items that must be inspected in high-precision gear testing. hotspot. According to my country's current standard gear verification regulations "JJG1008-2006", the transmission of gear pitch values ​​in my country is mainly realized through ultra-precision standard gears. Due to the complexity of the tooth shape o...

Claims

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