Method for removing incomplete thread by turning of numerically controlled lathe

A CNC lathe, a complete technology, applied in the field of removing incomplete threads, can solve the problems of high equipment maintenance costs, large one-time investment, and large physical exertion, so as to reduce labor intensity and processing costs, reduce handling, and improve processing quality Effect

Active Publication Date: 2012-01-04
中国航发湖南南方宇航工业有限公司
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During processing, the operator needs to constantly move and unload parts, which consumes a lot of physical strength, and the processing efficiency is low, and a special equipment is required to remove incomplete threads
The turning and milling machining center with power turret can remove incomplete threads by milling while turning the threads. For small and medium-sized enterprises or small batch production, this kind of machine tool is more expensive, one-time investment is large, and equipment maintenance costs are high.

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 removing incomplete thread by turning of numerically controlled lathe
  • Method for removing incomplete thread by turning of numerically controlled lathe
  • Method for removing incomplete thread by turning of numerically controlled lathe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Remove the incomplete thread of the external thread, the parameters of the external thread are thread root diameter D=100mm, thread height H=3mm, pitch P=3mm, thread head length 6mm and thread root width B=3mm. The steps to remove the incomplete thread of the external thread by turning with CNC lathe are as follows:

[0038] a. Select the grooving knife: the grooving knife width is 2.5mm, the rake angle of the grooving knife tip is 20°, and it has a concave arc-shaped chip breaker, the blade elongation is 5mm, and the cutting edge is ground to Ra0.4.

[0039] b. According to the thread cutting cycle command and the maximum cutting feed rate F set by the machine tool 机床max =5500mm / min, G01F5500 is used for tool retraction, and the spindle speed is calculated by the following formula:

[0040]

[0041] S = 6 * 5500 3.14 * 100 ...

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 relates to a method for removing an incomplete thread by turning of a numerically controlled lathe based on parameters such as the diameter of a thread root, the height of the thread, the width of the thread root, thread pitch and the length of a thread head. The method comprises the following steps of: selecting an appropriate groove cutter; computing the rotational speed of a main shaft; determining cutter compensation; determining the number of machining layers; calculating cutting output of a rough machining layer and a fine machining layer; and removing the incomplete thread by rough machining and fine machining. The method is convenient and simple in operation, machining equipment is not required to be replaced during machining, and the machining of the thread and the removal of the incomplete thread can be realized; the machining quality is good, and the effect is stable; and carrying and disassembly of parts are eliminated, the machining efficiency is improved, the labor intensity of a worker and the machining cost are reduced, and the method is applicable to mass production and machining.

Description

technical field [0001] The invention relates to a method for removing incomplete threads, in particular to a method for removing incomplete threads by turning with a multi-lathe. Background technique [0002] During thread processing, the thread head and tail will produce a thread with an incomplete cross-section, also known as the thread leading thread and the thread end thread. This incomplete thread shows that the bottom of the tooth is complete and the top of the tooth is incomplete. Incomplete threads are deformed due to insufficient strength, resulting in thread damage and disordered teeth, which greatly reduce the service life of threads. In order to ensure quality and service life, it is required to remove incomplete threads. At present, the incomplete threads are removed after the thread processing is completed, and the secondary processing is carried out by fitter filing or grinding, milling (including CNC milling). During processing, the operator needs to consta...

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): B23B1/00
Inventor 曹立国
Owner 中国航发湖南南方宇航工业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap