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

Method for repairing cylinder screw holes and special scraper and screw tap for implementing method

A repair method and cylinder technology, which are applied in the directions of drilling, transportation and packaging, thread cutting tools, etc., can solve the problems of scrapped cylinders, insufficient repairing accuracy of cylinder screw holes, and difficult processing, and achieve the effect of avoiding scrapping.

Inactive Publication Date: 2011-01-12
HARBIN TURBINE
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that when repairing the screw hole of the split face in the cylinder, the processing is difficult, and the repair accuracy of the cylinder screw hole is not up to the problem that the cylinder is scrapped, and a method for repairing the screw hole of the cylinder and a special scraper for realizing the method are provided and taps

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 repairing cylinder screw holes and special scraper and screw tap for implementing method
  • Method for repairing cylinder screw holes and special scraper and screw tap for implementing method
  • Method for repairing cylinder screw holes and special scraper and screw tap for implementing method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 , figure 2 , image 3 , Figure 10 , Figure 14 and figure 1 5 illustrates this embodiment, which is realized by the following methods: Step 1, install the radial drilling machine: install the radial drilling machine on the cylinder 6 that needs to be processed, and the main shaft 3 on the radial drilling machine is connected to the The original threaded hole 1 is facing directly, and the base of the radial drilling machine is raised to the same height as the working surface of the radial drilling machine and the middle plane A of the cylinder. Within mm, the perpendicularity between the main shaft 3 on the radial drilling machine and the facet A in the cylinder is within 0-0.03mm, use the inclined iron and the dial indicator to align the radial drilling machine and then fix the radial drilling machine with bolts; Step 2 , Reaming: install the drill bit in the spindle hole of the radial drilling machine, the diam...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination Figure 3 to Figure 9 Describe this embodiment, the scraper 8 of this embodiment is made up of scraper rod 8-1 and scraper blade 8-2, and the lower end of scraper rod 8-1 is provided with positioning bar 8-1-1, and the position of positioning bar 8-1-1 The diameter is D-1, and the upper end of the positioning bar 8-1-1 is provided with a shoulder 8-1-2 on the scraper bar 8-1, the length of the shoulder 8-1-2 is L, the width is h, and the shoulder 8-1-2 has a blade installation hole 8-1-3 along the width direction, and the upper end of the scraper blade 8-2 is provided with a groove 8-2-1 that matches the shoulder 8-1-2, and the scraper blade 8- The blade outer diameter D1 of 2 is Mx+1. A positioning rod 8-1-1 is designed on the scraper 8, so that the processed holes can meet the precision requirements. The sum of the height B of the shoulder 8-1-2 and the length C of the positioning rod 8-1-1 should be greater than the sum...

specific Embodiment approach 3

[0009] Specific implementation mode three: combination Figure 10 ~ Figure 13 Describe this embodiment, the screw tap 9 of this embodiment is made up of taper shank 9-1, top 9-2, wrench 9-3, connecting rod 9-4, two positioning keys 9-5 and tap sleeve 9-6, and the top The upper end of 9-2 is installed in the center hole of the lower end of the taper handle 9-1, the apex head of the lower end of the top 9-2 is on the center of the upper end face of the wrench 9-3, and the upper end of the extension rod 9-4 is installed on the top of the wrench 9-3. In the central hole, the lower end of the connecting rod 9-4 is provided with a connecting rod 9-4-1, and the connecting rod 9-4 is symmetrically provided with two first positioning keyways 9-4-2 above the connecting rod 9-4-1. The center of the tap sleeve 9-6 is provided with a connecting rod mounting hole 9-6-1, and the upper end face of the tap sleeve 9-6 is symmetrically provided with two second positioning keyways 9 equal in widt...

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
surface roughnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for repairing cylinder screw holes and a special scraper and a screw tap for implementing the method and relates to the method for repairing the cylinder screw holes, which solves the problem that a cylinder is scrapped owing to great repair processing difficulty of the cylinder screw holes and difficulty in achieving repair precision. The method comprises the following steps: 1. installing a radial drilling machine; 2. broaching; 3. boring holes; 4. scraping threaded holes; and 5. tapping. In the scraper, an upper end of a scraper blade is equipped with a groove matched with a shoulder, and the external diameter of the cutting edge of the scraper blade is Mx+1. In the screw tap, a tip is abutted with the center of a wrench, a connecting rod is symmetrically equipped with two first locating key slots, an upper end surface of a screw tap sleeve is symmetrically equipped with two second locating key slots width of which is equal to that of the first locating key slots, and two locating keys are respectively arranged in the first locating key slots at two sides of the connecting rod and the second locating key slots at two sides of the upper end surface of the screw tap sleeve. In the invention, the special scraper and the screw tap are used for processing the cylinder screw holes through the radial drilling machine so that the repaired cylinder screw holes conform to the precision requirement of the cylinder screw holes, thus avoiding the cylinder being scrapped.

Description

technical field [0001] The invention relates to a method for repairing screw holes of a cylinder and a special tool for realizing the method. Background technique [0002] During the overhaul of the high-pressure cylinder of a 200,000 unit in a power plant, it was found that the threaded hole 1 and the original positioning hole 2 were not in the same axis, and the axes of the two holes were deviated due to thread roughening and tooth loss when the bolts were removed in the facet A of the cylinder. t, see figure 1 , causing the screw hole to be unusable, resulting in the cylinder being scrapped. In response to this situation, the screw holes on the cylinder need to be reworked. Because it is re-processed on the facet A of the cylinder, the processing is difficult, and the accuracy of the screw hole directly affects the quality of the cylinder. Once it fails, it may cause the cylinder to be scrapped; there is no effective repair method for the screw hole of the cylinder and ...

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): B23P6/02B23B51/00B23G5/06
Inventor 王玉升张奇孙盛丽徐玉彬张强
Owner HARBIN TURBINE
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