CN106425633A

CN106425633A - Method meeting quick alignment requirement of double-edge plate blade profile milling

Info

Publication number: CN106425633A
Application number: CN201611069521.8A
Authority: CN
Inventors: 刘随建; 刘建伟; 高见; 李美荣
Original assignee: Shenyang Liming Aero Engine Group Co Ltd
Current assignee: AECC Shenyang Liming Aero Engine Co Ltd
Priority date: 2016-11-29
Filing date: 2016-11-29
Publication date: 2017-02-22
Anticipated expiration: 2036-11-29
Also published as: CN106425633B

Abstract

The invention discloses a method meeting the quick alignment requirement of double-edge plate blade profile milling. The method comprises the steps that two conical tool handles are separately mounted on front and rear rotary shafts of a five-coordinate milling center; front and rear clamping heads of a clamp are separately mounted into the front and rear conical tool handles; the front and rear rotary shafts of a machine tool are adjusted to enable the front and rear clamping heads of the clamp to be parallel to the positioning face; the rear rotary shaft of the machine tool is adjusted to move parallelly to provide a specified distance between the front and rear clamping heads of the clamp; a standard mandrel is mounted on the front and rear clamping heads of the clamp; and a dial gauge fixed to a milling head of the machine tool is used to detect the circumferential jerk values of the two ends of the standard mandrel. The method has the advantages that the structure of the clamp is changed to enable angle-face positioning blocks prone to generating errors to have a fine adjustment function of correcting the errors later, the debug time of blade machining clamp switching is shortened to no longer than 0.5 h from 1-2 days.

Description

A kind of method for meeting double listrium blade profile Milling Process fast alignings requirements

Technical field

The present invention relates to mechanical field, specifically a kind of blade machining process, are more specifically a kind of blade type facing cuts The aligning method of clamp for machining structure design and correlation is cut, mainly for the double listriums of the compressors such as aero-engine, gas turbine Blade profile Milling Process fixture reaches the centering improved efficiency problem of processing request.

Background technology

Blade of aviation engine type face has complicated three-dimensional space curved surface structure, and is thin-walled nature, its with respect to The listrium position that blade is assembled on electromotor is required with contour accuracy with stricter position, it is contemplated that blade profile is processed Shi Yinwei thin-walled nature can be deformed and affect the problem of blade geometry accuracy guarantee, during blade profile NC milling The required precision of positioning fixture centering is all compared strictly.The stator blade of certain h type engine h is double listrium mounting structures, blade profile It is to be positioned with double listriums at blade profile two ends during processing, the fixture centering before processing is carried out using the mandrel of precision manufactureing, core Axle two ends produce and blade listrium identical structure, after fixture is initially installed on lathe, by standard mandrel clamping to fixture On, then adjustment two ends clamping fixture head, makes the standard mandrel being clamped on the clamping fixture head of two ends turn round everywhere over the entire length Jitter values≤0.01, it was demonstrated that now fixture is installed and met the requirements, and can carry out blade processing.Clamp structure in early stage processing In, it is using method indigo plant disk mode that two ends clamping fixture head is coupled with the installation of lathe, adjusts in order to the all-direction movement of chuck, by Listrium in blade two ends has misconstruction not at grade, and the two ends listrium on one direction also has Different angled arrangement forms so that centering needs the stationary problem not only having on fixture direction and position for overcoming, and also Correct the impact of fixture foozle and the impact of machine tool system error so that centering work is very time-consuming, so as to use in blade Lathe switching processing not blade of the same race when, will have one～bis- day time because alignment time stop over and leaf can not be carried out Piece is produced, and defines unnecessary waste.

Content of the invention

Due to blade profile Milling Process fixture, to be installed to the alignment time after lathe long so that lathe is in switching processing Not during blade of the same race, can there are the dead states of long period, cause unnecessary waste.It is an object of the invention to provide a kind of Meet the method that double listrium blade profile Milling Process fast alignings are required, concrete technical scheme is：By 2 tapered handle of a knifes respectively It is installed on the gyroaxis in front and back of five coordinate Milling Machining Center, chuck before and after fixture is respectively mounted 2 tapered knives of before and after In handle, before and after before and after adjustment lathe, gyroaxis makes fixture, chuck correspondence locating surface is parallel, and after adjustment lathe, gyroaxis carries out parallel Mobile, make, with predetermined distance between chuck before and after fixture, standard mandrel to be installed on chuck before and after fixture, using being fixed on machine Dial gauge on bed milling head carries out circumference jerk value detection to standard mandrel two ends, records perpendicular to locating surface direction mandrel two The jerk value difference of point, removes standard mandrel；Dismountable locating piece on chuck locating surface before and after fixture is removed, according to described The half value of jerk value difference, carries out the repairing of locating piece bottom surface or in locating piece bottom surface padding chi, then by the positioning after process Block is reinstalled on fixture, now fixture i.e. with machine tool rotary center superposition, verified using standard mandrel；

The fixture includes front chuck and rear chuck；The front chuck and rear chuck are respectively provided with dismountable locating piece, institute State locating piece to arrange with vane end faces to the locating surface for mating；The front chuck and rear chuck also set up the chuck of round bar type, institute State chuck to be held by tapered knife spindle clamp, the tapered handle of a knife is respectively arranged on the gyroaxis in front and back of five coordinate Milling Machining Center.

It is an advantage of the invention that：Bind mode of the fixture with lathe is changed into knife bar installation lathe by method indigo plant disk mode On, then the mode of knife bar clamping fixture again, makes clamp central have good synchronicity with lathe center, while changing fixture Structure, makes the degree face locating piece for easily producing foozle have the fine adjustment function of later stage rectification error, in clamping device first After simply being adjusted, fixture just can obtain prolonged steady statue, make blade hereafter switch clamp for machining debug time Foreshortened within 0.5 hour by 1～2 day.

Description of the drawings

Fig. 1 is blade construction schematic diagram；

Fig. 2 is standard core shaft structure schematic diagram；

Fig. 3 is clamp structure schematic diagram；

Fig. 4 is standard mandrel clamping centering schematic diagram.

Specific embodiment

Technical scheme main points are：

(1), on the Five Axis NC milling central apparatus on two gyroaxises of clamping device, centering mode is installed Preferably knife bar, using knife bar clamping fixture, makes clamp central obtain good concordance with knife bar, lathe center.

(2) two chucks of fixture are designed to round bar form a termination respectively, and round bar center is asserted setting for fixture Meter benchmark, the plane on fixture for being positioned to two locating surfaces of blade listrium sets up position dimension pass with clamp central System, (clamp central 10 refers to center corresponding with standard mandrel center in front and back's chuck, and the center is also to be clamped by knife bar The Yuan Zhou center of chuck, sees Fig. 4 in front and back) size relationship carries out moving in parallel to ensure by machine tool rotary axle；It is used on fixture The surface positioned by angle faces is designed as the locating piece form that can be dismantled, in order to clamping standard mandrel centering first Shi Jinhang size adjusting.

(3), when fixture is used first, two chucks of fixture are respectively installed on two knife bars with lathe connection, are adjusted Whole two chuck locating surfaces have parallel relation, then adjust the distance relation that two chucks should have, standard mandrel is filled Clip on fixture, using the dial gauge being fixed on lathe milling head, measured perpendicular to two locating surface direction mandrels respectively Jerk value, after obtaining eccentric difference, dismantles the active positioning block on lower clamp locating surface, reconditioning locating piece bottom surface or in locating piece Bottom surface padding chi, the eccentric difference of mandrel correspondence direction is corrected, so that fixture is provided with correct position relationship with lathe, In reworking blade from now on, ensure that in for a long time, it is only necessary to adjust two chucks of fixture the depth of parallelism and Jerk value Eligibility requirements after standard mandrel clamping are just met apart from size, and long-time is used and causes fixture positioning surface wear When, can a manufacture locating piece carry out fixture reparation.

Illustrate the present invention below in conjunction with the accompanying drawings, as Figure 1-Figure 4,2 tapered handle of a knifes 9 are respectively arranged in five On the front gyroaxis 7 and rear gyroaxis 8 of mark Milling Machining Center, before and after chuck before and after fixture 1 and rear chuck 2 are respectively mounted In 2 tapered handle of a knifes, before and after before and after adjustment lathe, gyroaxis makes fixture, chuck correspondence locating surface is parallel, gyroaxis after adjustment lathe Moved in parallel, make, with predetermined distance between chuck before and after fixture, on chuck, standard mandrel 5 to be installed before and after fixture, make With the dial gauge 6 being fixed on lathe milling head standard mandrel two ends are carried out with circumference jerk value detection, is recorded perpendicular to positioning The jerk value difference of 2 points of face direction mandrel, removes standard mandrel；By dismountable locating piece 4 on chuck locating surface before and after fixture Remove, according to the half value of the jerk value difference, carry out the repairing of locating piece bottom surface or in locating piece bottom surface padding chi, then will Locating piece after process is reinstalled on fixture, now fixture i.e. with machine tool rotary center superposition, carried out using standard mandrel Checking；

The fixture includes front chuck 1 and rear chuck 2；The front chuck 1 and rear chuck 2 are respectively provided with dismountable locating piece 4, the locating piece is arranged with vane end faces to the locating surface for mating；The front chuck 1 and rear chuck 2 also set up the folder of round bar type 3, the chuck 3 is clamped by taper handle of a knife 9, and the tapered handle of a knife is respectively arranged in the front revolution of five coordinate Milling Machining Center On axle 7 and rear gyroaxis 8.

Claims

1. the method that a kind of double listrium blade profile Milling Process fast alignings of satisfaction are required, it is characterised in that：By 2 tapered knives Handle is respectively arranged on the gyroaxis in front and back of five coordinate Milling Machining Center, and chuck before and after fixture is respectively mounted before and after 2 In tapered handle of a knife, before and after before and after adjustment lathe, gyroaxis makes fixture, chuck correspondence locating surface is parallel, and after adjustment lathe, gyroaxis enters Row is moved in parallel, and is made with predetermined distance between chuck before and after fixture, installs standard mandrel, using solid before and after fixture on chuck Dial gauge on lathe milling head carries out circumference jerk value detection to standard mandrel two ends, records perpendicular to locating surface direction The jerk value difference of 2 points of mandrel, removes standard mandrel；Dismountable locating piece on chuck locating surface before and after fixture is removed, is pressed According to the half value of the jerk value difference, the repairing of locating piece bottom surface is carried out or in locating piece bottom surface padding chi, after then processing Locating piece reinstall on fixture, now fixture i.e. with machine tool rotary center superposition, verified using standard mandrel；

The fixture includes front chuck and rear chuck；The front chuck and rear chuck are respectively provided with dismountable locating piece, described fixed Position block is arranged with vane end faces to the locating surface for mating；The front chuck and rear chuck also set up the chuck of round bar type, the folder Head is held by tapered knife spindle clamp, and the tapered handle of a knife is respectively arranged on the gyroaxis in front and back of five coordinate Milling Machining Center.