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

Method for precisely measuring and processing profile of disc cam

A technology of contour measurement and disc cam, which is applied in the direction of measuring device, metal processing equipment, workpiece feed movement control, etc., can solve the problems of difficult operability, difficult selection of curve fitting method, complex cam master wheel profile, etc.

Active Publication Date: 2011-05-11
盐城市纺织染整产业园实业开发有限公司
View PDF5 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the profile of the cam master wheel, the curve fitting cannot fit the entire profile, so it is necessary to fit in segments, and the length of the segment will directly affect the error between the fitted data and the accurate data; but the segment length Selection is often difficult, there is no definite selection criterion, too long a segment will result in a large deviation of the contour shape, and too short a segment will result in an unsmooth curve at the junction between segments
Therefore, the operability of the curve fitting method is more difficult, and the error is more difficult to control, resulting in the poor generality of the method

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
  • Method for precisely measuring and processing profile of disc cam
  • Method for precisely measuring and processing profile of disc cam
  • Method for precisely measuring and processing profile of disc cam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In order to obtain accurate disc cam profile data and process a cam with good synchronization with the cam master wheel (referred to as the master wheel), it is necessary to obtain the offset value of the contact point according to the radius of the measuring head or grinding wheel and eliminate it. For the measuring head, the approximate data of the real mother wheel profile is deduced according to the measured lift and angle of the mother wheel; for the grinding wheel, the data for processing is obtained according to the approximate data of the real mother wheel profile above, so that the final The processed cam is consistent with the mother wheel.

[0052] See Figure 4 , the method for carrying out accurate profile measurement and precise machining of disc cams in this embodiment includes the following steps:

[0053] ① The initial data of the discrete points of the master wheel profile are measured by the instrument.

[0054] See figure 1 , The cam precision mea...

Embodiment 2

[0083] In this embodiment, the cam of a certain type is sampled at an angle (ie α i ) The data measured at 0 degrees and 19.2 degrees are processed by the method of carrying out accurate profile measurement and precise machining of the disc cam obtained in embodiment 1.

[0084] By step 1. to 4. obtain the real approximation data of all discrete points of the parent wheel profile by the step of the method for embodiment 1, then by step 7. the real approximation data of the discrete points of the parent wheel profile are processed, obtain the following table 1 and The data in Table 2 (polar diameter ρ', grinding wheel radius R 2 and λ' are in millimeters).

[0085] Table 1. When the sampling angle is 0 degrees

[0086]

ρ'

θ'

angle α j

Grinding wheel

λ'

Radius R 2

106

0

0

25

131

106.0004

0.15

0.15

25

130.9985

106.0006

0.3

0....

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

No PUM Login to View More

Abstract

The invention discloses a method for precisely measuring and processing the profile of a disc cam. The method comprises the following steps: measuring the primary data of discrete points of a primary wheel profile through a delicate cam measurement instrument; determining the tangent point deviation angle of each discrete point of the primary wheel profile and a measuring head through a tangent point deviation angle determination method; obtaining the real approximate data of the primary wheel profile through a lift compensation method as per the tangent point deviation angle of the primary wheel profile and the measuring head; determining the tangent point deviation angle of each discrete point of the cam profile and a grinding wheel through the tangent point deviation angle determination method as per the real approximate data of the primary wheel profile; calculating to obtain the data of each discrete point of the cam profile for processing through the lift compensation method as per the tangent point deviation angle of the cam profile and the grinding wheel; and inputting the data of the discrete points of the cam profile for processing into a numerical control grinding machine to process a cam blank to obtain a cam finished product. The precise cam profile data can be obtained through the method, and the cam with good synchronicity same as the primary wheel can be processed.

Description

technical field [0001] The invention relates to a method for contour measurement and processing of a cam, in particular to a method for contour measurement and processing of a disc cam. Background technique [0002] Cams or camshafts are key components in many devices, especially in textile machinery, where the cam is known as the brain of the textile machinery. For the disc cam (hereinafter referred to as the cam) among them, the surface profile of the cam is complex, so the requirements for grinding accuracy and production efficiency are very high. How to improve grinding efficiency and machining precision is an urgent problem to be solved in cam grinding process control. In recent years, with the development of numerical control technology, the new cam grinding process has changed the structure of the traditional swing head and tailstock, and adopted a new incremental, high-speed, high-efficiency camshaft grinding process. and accuracy has been greatly improved. Howeve...

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): B24B49/00G01B21/20
Inventor 黄文生张建生毛国勇徐磊刘建功
Owner 盐城市纺织染整产业园实业开发有限公司
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