Special fixture for processing inclined conical nozzle steam passage and method thereof

A special fixture and steam channel technology, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of no inclined cone hole type nozzle steam channel, difficult centering of drill bits, etc., and achieves good results and guarantees The effect of high accuracy and positional precision

Inactive Publication Date: 2010-03-17
HARBIN TURBINE
View PDF0 Cites 24 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 there is no special fixture for processing the air channel of the inclined cone hole type nozzle and the problem that the centeri

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
  • Special fixture for processing inclined conical nozzle steam passage and method thereof
  • Special fixture for processing inclined conical nozzle steam passage and method thereof
  • Special fixture for processing inclined conical nozzle steam passage and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Specific implementation manner one: such as Figure 4 As shown, the special fixture for processing the oblique cone-hole nozzle steam passage of this embodiment includes a fixture bending plate 1, a central shaft 2, an index plate 3, a positioning mandrel 6, three surrounding pressure plates 7 and a central pressure plate 8. The clamp bending plate 1 and the index plate 3 are sequentially sleeved on the central shaft 2. The central shaft 2 is fixed on the clamp bending plate 1 by bolts. The clamp bending plate 1 is provided with a stepped through hole 1-1. The index plate 3 Twenty indexing through holes 3-1 are opened along the circumferential direction. The center of the stepped through hole 1-1 and the center of the indexing through hole 3-1 are on the same circumference, and the positioning mandrel 6 is inserted in On the index plate 3, the central pressing plate 8 is fixedly mounted on one end of the central shaft 2, and the peripheral pressing plates 7 are fixedly mo...

Example Embodiment

[0019] Specific implementation manner two: such as Figure 4 As shown, the special clamp described in this embodiment further includes a supporting rib 10, which is arranged in a corner 11 outside the curved plate 1 of the clamp. With such a design, the supporting rib 10 can improve the stability of the bent plate 1 of the clamp. Other components and connection relationships are the same as those in the first embodiment.

Example Embodiment

[0020] Specific implementation manner three: such as Figure 4 As shown, the special fixture in this embodiment further includes a thrust bearing 12 which is sleeved on the central shaft 2. Such a design can reduce friction and make the index plate 3 rotate more lightly. Other components and connection relationships are the same as those in the first or second embodiment.

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
Roughnessaaaaaaaaaa
Login to view more

Abstract

A special fixture for processing an inclined conical nozzle steam passage and a method thereof relate to a fixture for processing the inclined conical nozzle steam passage and a method thereof. The invention solves the problem that at present, no special fixture for processing the inclined conical nozzle steam passage exists, and when a tapered hole of the nozzle steam passage is processed, a drilling bit is difficult to be centered. An indexing plate of the special fixture is provided with twenty indexing through holes along the periphery direction; the center of a stepped through hole and the center of the indexing through holes are on one periphery; a spotting spindle is mounted on the indexing plate in a plug-in manner; the processing method is as follows: using a milling cutter with diameter of 13mm to feed from a P point so as to process a plane C which is vertical to the central line of the tapered hole to be processed; and stopping feeding when the milling cutter mills to a Q point, wherein the center of a hole pitch circle having diameter of 13mm and milled by the milling cutter is the core-bit of the drilling bit. The special fixture solves the problem that at present, nospecial fixture for processing the inclined conical nozzle steam passage exists; and the inclined conical hole of the nozzle stream passage processed by the method has high position accuracy.

Description

technical field [0001] The invention relates to a special fixture for processing the nozzle steam passage and a method for processing the nozzle steam passage by using the special fixture. Background technique [0002] The nozzle is an important part of the steam turbine, and the machining accuracy of the nozzle steam passage on the nozzle directly affects the operating efficiency of the steam turbine unit. The structure of the oblique cone hole nozzle is composed of four groups of nozzle blocks with the same inner and outer circle size and the same nozzle structure, but the number of nozzle air passages and fan angles are different. The nozzle air passage is composed of oblique cone hole and mm slope holes are connected, see figure 1 with figure 2 As shown, due to the complex position of the nozzle steam channel and the high precision requirement of the nozzle steam channel, it is very difficult to process the nozzle. The whole nozzle is composed of four groups of nozz...

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
IPC IPC(8): B23Q3/06B23Q16/02B23P15/16
Inventor 朱德强杨兴永来庆秀
Owner HARBIN TURBINE
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