CN217256255U - Processing correcting needle for runner blade of hydraulic generator - Google Patents

Processing correcting needle for runner blade of hydraulic generator Download PDF

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Publication number
CN217256255U
CN217256255U CN202122920139.6U CN202122920139U CN217256255U CN 217256255 U CN217256255 U CN 217256255U CN 202122920139 U CN202122920139 U CN 202122920139U CN 217256255 U CN217256255 U CN 217256255U
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China
Prior art keywords
needle
cylinder
correcting
push
pull rod
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Active
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CN202122920139.6U
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Chinese (zh)
Inventor
李晓强
刘志明
刘卫光
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Kunming Motor Factory Co ltd
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Kunming Motor Factory Co ltd
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Priority to CN202122920139.6U priority Critical patent/CN217256255U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The utility model discloses a hydraulic generator runner blade processing school needle aims at providing one kind and measures convenient blade processing school needle. One end of the measuring instrument, which is contacted with the measuring instrument when in use, is called a front end, and the other end opposite to the front end is called a rear end; the device comprises a hollow correcting cylinder, a clamping rod, a measuring pin, a spring, a push-pull rod, a pointer and a graduated scale, wherein the front end of the correcting cylinder is provided with a through hole; the side wall of the correction cylinder is provided with a strip hole for the push-pull rod to penetrate out; the graduated scale is fixedly connected to one side of the strip hole and is used for being matched with the pointer; the front end of the gauge needle is conical; the gauge needle is coaxial with the correction cylinder and is in clearance fit with the correction cylinder, and the gauge needle linearly moves along the axis of the correction cylinder under the stress action of the push-pull rod.

Description

Processing correcting needle for runner blade of hydraulic generator
Technical Field
The utility model relates to a correcting appliance and technical field specifically relate to a hydraulic generator runner blade processing school needle.
Background
Summary of the background Art
The water turbine runner is a core component of the water turbine generator set, the function of the water turbine runner is to convert energy into rotary mechanical energy, the blades are important components forming the runner, and the geometric accuracy and the surface smoothness of the blades play a decisive role in determining whether the water turbine generator set can achieve the highest efficiency. The blades are cast by stainless steel, and the appearance curve is complex. When the runner blade with complex shape and large change of space curvature is machined, blank clamping, fixing and correcting are the most critical links in the whole machining process. Whether the blank conforms to the workpiece or not (namely whether the blank has casting deformation or not) can be judged through correction, the maximum machining allowance and the minimum machining allowance of the blank can be mastered, and quality guarantee is provided for subsequent machining.
In the early stage of numerical control machining, the blade is corrected by the following steps: the drill rail clamps a drill bit with the diameter of 10 mm and the length of 100nn, the distance between a drill point and a blank workpiece is kept to be more than 50mm during program operation so as to prevent the workpiece from being touched to cause accidents, the distance value between the workpiece and the drill point is vertically measured by a ruler and recorded, and the numerical values of all grid points are compared after being measured. The disadvantages of such correction blades are: 1. when the straight ruler and the drill point are not crossed on the same plane, the reading cannot be vertically observed by naked eyes, and the error is large. 2. When the straight scale contacts with the steep surface of the workpiece, the straight scale is difficult to keep concentric with the drill point, and different values can be measured. The error of the measuring method is more than 3mm, and the value of the measuring point is often inconsistent with that of an actual processing point, so that the processed blade can cause waste.
Therefore, how to correct the blade not only saves time and labor, but also can accurately measure numerical values, ensures that two surfaces of the blade can be milled in blade processing, meets the size of a design drawing after blade processing, and is a technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a purpose aims at overcoming the not enough of prior art existence, provides a hydraulic generator runner blade processing school needle, and its measurement accuracy accords with the processing requirement and measures fast.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a processing and correcting needle for a runner blade of a hydraulic generator is characterized in that one end of the processing and correcting needle, which is in contact with measurement when in use, is called a front end, and the other end opposite to the front end is called a rear end; the correcting device comprises a hollow correcting cylinder, a clamping rod, a measuring pin, a spring, a push-pull rod, a pointer and a graduated scale, wherein the front end of the correcting cylinder is provided with a through hole; the side wall of the correction cylinder is provided with a strip hole for the push-pull rod to penetrate out; the graduated scale is fixedly connected to one side of the strip hole and is used for being matched with the pointer; the front end of the measuring needle is conical; the gauge needle is coaxial with the correction cylinder and is in clearance fit with the correction cylinder, and the gauge needle linearly moves along the axis of the correction cylinder under the stress action of the push-pull rod.
Specifically, the two sets of graduated scales are symmetrically arranged on two sides of the bar hole.
Specifically, the clamping rod is connected with the correction cylinder through a thread structure.
Specifically, the push-pull rod is connected with the gauge needle by adopting a threaded structure.
Compared with the prior art, the utility model has the advantages of as follows:
the correcting needle has the advantages of simple structure, small size, easy design, easy manufacture and convenient operation in the using process. The needle corrector is provided with a graduated scale, and the measurement precision is high and can reach 0.5 mm. The measuring range can meet the deformation of the blank. The contact area of the measuring needle point is small, and the measured value is real and reliable when the blade surface with large curvature change is measured. The measuring needle has good coaxiality with the needle cylinder, and the error between the steep surface and the non-steep surface is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left partial sectional view of fig. 1.
Detailed Description
In order to clearly illustrate the objects, technical solutions and advantages of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by a person skilled in the art without inventive work based on the embodiments described below belong to the protection scope of the present invention.
In the description of the present invention, technical or scientific terms used should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. It should be noted that unless otherwise expressly stated or limited, the terms "mounted," "connected," "disposed," and the like are intended to be broadly construed and include, for example, fixedly connected, disposed, detachably connected, disposed, and integrally connected and disposed. The terms "connected" and "connected" are not limited to physical or mechanical connections, but may also include electrical connections, and those skilled in the art will understand the specific meaning of the terms in the present disclosure according to specific situations. The terms "comprises" or "comprising," and the like, mean that the element or item preceding the term includes the element or item listed after the term and its equivalent, but not excluding other elements or items. The terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Meanwhile, in order to keep the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known parts is omitted.
As shown in the attached drawings, one end of the hydro-generator runner blade processing calibration needle, which is in contact with the measurement when in use, is called a front end, and the other end opposite to the front end is called a rear end; the device comprises a hollow correcting cylinder 2 with a through hole at the front end, a clamping rod 1 fixedly connected to the rear end of the correcting cylinder 2 and coaxial with the correcting cylinder 2, a measuring needle 4 penetrating through the cavity of the correcting cylinder 2 and extending out of the through hole at the front end of the correcting cylinder 2, a spring 3 positioned in the cavity of the correcting cylinder 2 and sleeved on the measuring needle 4, a push-pull rod 5 fixedly connected with the front end of the measuring needle 4 through the side wall of the correcting cylinder 2, a pointer 6 fixedly connected to the push-pull rod 5 and close to the outer wall of the correcting cylinder 2, and a graduated scale 7; the side wall of the correction cylinder 2 is provided with a strip hole for the push-pull rod 5 to penetrate out; the graduated scale 7 is fixedly connected to one side of the strip hole and is used for being matched with the pointer 6; the front end of the gauge needle 4 is conical; the gauge needle 4 is coaxial with the correction cylinder 2 and is in clearance fit with the correction cylinder 2, and the gauge needle 4 moves linearly along the axis of the correction cylinder 2 under the action of stress of the push-pull rod 5.
In this embodiment, the clamping rod 1 and the correcting cylinder 2 are connected by a threaded structure, the push-pull rod 5 and the measuring pin 4 are connected by a threaded structure, and it is obvious that the connection between the components can also be achieved by common fixing methods such as welding.
As a modification of the above embodiment, the two sets of scales 7 are symmetrically installed on two sides of the bar hole to provide a better visual field range for reading.
The working principle is as follows: a numerical control machining center shank drill cap clamping rod 1 is adopted, a machine tool marks out a machining area edge line in the process of running a correction program, a push-pull rod 5 is pulled to be in contact with a workpiece surface during measurement, a pointer 6 indicates a numerical value on a graduated scale at the moment, and the numerical value is recorded. The point data of each grid (80X 80) of the processing surface is measured by the same method in sequence, and after accurate data is obtained, the placing position of the workpiece can be adjusted to meet the requirement, and the processing can be started according to the processing program.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It should be understood by those skilled in the art that any modification, equivalent replacement, or improvement made to the technical solutions or parts of technical features described in the above embodiments can be included in the scope of the present invention within the spirit and principle of the present invention.

Claims (4)

1. A processing and correcting needle for a runner blade of a hydraulic generator is characterized in that one end of the processing and correcting needle, which is in contact with measurement when in use, is called a front end, and the other end opposite to the front end is called a rear end; the method is characterized in that: the correcting device comprises a hollow correcting cylinder (2) with a through hole at the front end, a clamping rod (1) fixedly connected to the rear end of the correcting cylinder (2) and coaxial with the correcting cylinder (2), a measuring needle (4) penetrating through the cavity of the correcting cylinder (2) and extending out of the through hole at the front end of the correcting cylinder (2), a spring (3) positioned in the cavity of the correcting cylinder (2) and sleeved on the measuring needle (4), a push-pull rod (5) fixedly connected with the front end of the measuring needle (4) by penetrating through the side wall of the correcting cylinder (2), a pointer (6) fixedly connected to the push-pull rod (5) and close to the outer wall of the correcting cylinder (2), and a graduated scale (7); the side wall of the correction cylinder (2) is provided with a strip hole for the push-pull rod (5) to penetrate out; the graduated scale (7) is fixedly connected to one side of the strip hole and is used for being matched with the pointer (6); the front end of the gauge needle (4) is conical; the gauge needle (4) is coaxial with the correction cylinder (2) and is in clearance fit with the correction cylinder (2), and the gauge needle (4) moves linearly along the axis of the correction cylinder (2) under the stress action of the push-pull rod (5).
2. The processing pin of the runner blade of the hydraulic generator according to claim 1, which is characterized in that: the two sets of graduated scales (7) are symmetrically arranged on two sides of the strip hole.
3. The processing and aligning needle for the runner blade of the hydraulic generator according to claim 1 or 2, which is characterized in that: the clamping rod (1) is connected with the correction cylinder (2) through a threaded structure.
4. The processing and aligning needle for runner blades of hydraulic generators according to claim 1 or 2, which is characterized in that: the push-pull rod (5) is connected with the gauge needle (4) by adopting a threaded structure.
CN202122920139.6U 2021-11-26 2021-11-26 Processing correcting needle for runner blade of hydraulic generator Active CN217256255U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122920139.6U CN217256255U (en) 2021-11-26 2021-11-26 Processing correcting needle for runner blade of hydraulic generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122920139.6U CN217256255U (en) 2021-11-26 2021-11-26 Processing correcting needle for runner blade of hydraulic generator

Publications (1)

Publication Number Publication Date
CN217256255U true CN217256255U (en) 2022-08-23

Family

ID=82882073

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122920139.6U Active CN217256255U (en) 2021-11-26 2021-11-26 Processing correcting needle for runner blade of hydraulic generator

Country Status (1)

Country Link
CN (1) CN217256255U (en)

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