CN106312159A - Fan wheel disc arc mortise machining method - Google Patents

Abstract

The invention relates to the field of machining, in particular to a fan wheel disc arc mortise machining method. The fan wheel disc arc mortise machining method includes the steps of part clamping, namely selecting and remaking an aluminum plate about 200 mm in thickness and about 450 mm in diameter, turning to level two ends of the aluminum plate, machining a positioning face according to the dimension of a seam allowance of a part, clamping the aluminum plate in a machining center, drilling a blind hole 60 mm in diameter and 8 mm in depth according to a position of a datum hole, screwing a double-thread screw into the blind hole to press the part tightly, aligning the datum hole with a pin, mounting the part on a fixture, aligning to ensure that part datum runout is not more than 0.01 mm, pressing a press plate tightly and making sure that the circumferential center and the rotating center of a machine tool coincide after part mounting. The fan wheel disc arc mortise machining method has the advantages that machining precision is high, dimensional precision and technological requirements are controlled effectively, machining steps are reasonable, machined part dimensions and technical conditions can meet the requirements of technological drawings, requirements on the part surface quality are guaranteed and production efficiency is improved.

Description

Fan wheel disc circular arc tongue-and-groove processing method

Technical field

The present invention relates to field of machining, be specifically related to fan wheel disc circular arc tongue-and-groove processing method.

Background technology

Certain h type engine h fan wheel disc is the vital part of engine low-pressure compressor rotor portion, and working environment is more disliked Bad；Part the selection of material is TC4, and machinability is low.This parts profile size is less, and maximum outside diameter is 398mm, and zero Part height is 227mm, and design of part is compact, and profile is complicated, and technical conditions are strict.Woollen is forging part, annealed process, slightly adds Paying after work, inner chamber profile is formed three die cavities closed by two-stage web with front and back installing limit, and the less surplus of core diameter is relatively Greatly, outside is axial circular arc dovetail slot, and the leaf size of blade owing to being connected with wheel disc is relatively big, in order to improve blade tenon Bonding strength, tenon groove structure is designed to dovetail configuration circular arc tongue-and-groove, and broaching method cannot be carried out processing, it is necessary to needs to pass through milling Machining, the required precision of grooved is the highest, and the profile tolerance of locating surface is only 0.02mm, and the difficulty of processing is the biggest.

Summary of the invention

In order to solve the problems referred to above, the present invention provides a kind of accuracy of manufacture higher, has efficiently controlled dimensional accuracy and skill Art requirement, procedure of processing arranges rationally, and the accessory size processed and technical conditions disclosure satisfy that art work sheet requirement, and ensure The requirement of surface quality of workpieces, improves the fan wheel disc circular arc tongue-and-groove processing method of production efficiency.

Fan wheel disc circular arc tongue-and-groove processing method of the present invention, comprises the following steps:

The first step, parts fixation, select a thickness about 200mm, the aluminum dish of diameter about 450mm to change a social system, the two ends of aluminum dish Che Ping, and go out locating surface according to the dimensioned of part inner stopper, by aluminum dish clamping to machining center, then according to datum hole Position bore an a diameter of 60mm, the degree of depth is the blind hole of 8mm, is inserted the pin of diameter 6mm in blind hole, by the angle of datum hole To being input in workpiece zero address, in the middle of aluminum dish, the screwed hole of 4 M12 of processing, is screwed into double threaded screw, compresses for part With, datum hole is aligned with pin, part is installed on fixture, and centering part benchmark is beated no more than 0.01mm, clamping platen, Circle center after part is installed overlaps with lathe center of rotation；

Second step, circular arc tongue-and-groove Milling Process, during tongue-and-groove Milling Machining, machine spindle under horizontal state, cutter cutter is clicked On the part centre of gyration, axial Y-direction zero point selects to install on limit at part middle front part, in point thick fluting, Milling Machining tongue-and-groove Outside side profile, Milling Machining tongue-and-groove, 3 work steps of profile are processed, and the slotting cutter first by the diameter 12mm of standard successively enters The thick fluting of row, removes the most of surplus in the middle part of tongue-and-groove, and the narrowest place of tongue-and-groove leaves the surplus of 0.5mm, adds feed speed in man-hour For 10mm/min, the speed of mainshaft is 150r/min, and cutter often runs away from workpiece after a tongue-and-groove, and worktable rotary is to next Tongue-and-groove position, is processed according to previous cutter path again, until the surplus of all tongue-and-grooves all being removed, next uses dove-tail form Profile milling cutter processing tongue-and-groove bottom inside profile, processing front projection checks the contour accuracy of cutter, the most progressively processes, The monolateral 0.5mm surplus that leaves during a rear cutter polish, changes a new cutter, to ensure that the contour accuracy of cutter is higher than part Requirement, fills size to after cutter by cutter, and the above-below direction finish-milling one along part encloses, and uses tongue-and-groove model after processing first groove Measure, then process other tongue-and-groove successively, it is ensured that swallow-tail form tongue-and-groove bottom size qualification, finally add with taper profile milling cutter Work outer profile, profile is machined to size by point 2～3 cuttves, and connecting arc ensures by circle R bottom cutter；

3rd step, piece test, the technical conditions such as tongue-and-groove profile tolerance and position degree, carry out at three coordinate measuring machine after processing Scanning, matching, the profile theoretical with part is compared, and draws the most qualified conclusion.

The accuracy of manufacture of the present invention is higher, has efficiently controlled dimensional accuracy and technology requirement, and procedure of processing arranges rationally, institute Accessory size and the technical conditions of processing disclosure satisfy that art work sheet requirement, and ensure that the requirement of surface quality of workpieces, improves Production efficiency.

Detailed description of the invention

Fan wheel disc circular arc tongue-and-groove processing method of the present invention, comprises the following steps:

The first step, parts fixation, select a thickness about 200mm, the aluminum dish of diameter about 450mm to change a social system, the two ends of aluminum dish Che Ping, and go out locating surface according to the dimensioned of part inner stopper, by aluminum dish clamping to machining center, then according to datum hole Position bore an a diameter of 60mm, the degree of depth is the blind hole of 8mm, is inserted the pin of diameter 6mm in blind hole, by the angle of datum hole To being input in workpiece zero address, in the middle of aluminum dish, the screwed hole of 4 M12 of processing, is screwed into double threaded screw, compresses for part With, datum hole is aligned with pin, part is installed on fixture, and centering part benchmark is beated no more than 0.01mm, clamping platen, Circle center after part is installed overlaps with lathe center of rotation；

Second step, circular arc tongue-and-groove Milling Process, during tongue-and-groove Milling Machining, machine spindle under horizontal state, cutter cutter is clicked On the part centre of gyration, axial Y-direction zero point selects to install on limit at part middle front part, in point thick fluting, Milling Machining tongue-and-groove Outside side profile, Milling Machining tongue-and-groove, 3 work steps of profile are processed, and the slotting cutter first by the diameter 12mm of standard successively enters The thick fluting of row, removes the most of surplus in the middle part of tongue-and-groove, and the narrowest place of tongue-and-groove leaves the surplus of 0.5mm, adds feed speed in man-hour For 10mm/min, the speed of mainshaft is 150r/min, and cutter often runs away from workpiece after a tongue-and-groove, and worktable rotary is to next Tongue-and-groove position, is processed according to previous cutter path again, until the surplus of all tongue-and-grooves all being removed, next uses dove-tail form Profile milling cutter processing tongue-and-groove bottom inside profile, processing front projection checks the contour accuracy of cutter, the most progressively processes, The monolateral 0.5mm surplus that leaves during a rear cutter polish, changes a new cutter, to ensure that the contour accuracy of cutter is higher than part Requirement, fills size to after cutter by cutter, and the above-below direction finish-milling one along part encloses, and uses tongue-and-groove model after processing first groove Measure, then process other tongue-and-groove successively, it is ensured that swallow-tail form tongue-and-groove bottom size qualification, finally add with taper profile milling cutter Work outer profile, profile is machined to size by point 2～3 cuttves, and connecting arc ensures by circle R bottom cutter；

3rd step, piece test, the technical conditions such as tongue-and-groove profile tolerance and position degree, carry out at three coordinate measuring machine after processing Scanning, matching, the profile theoretical with part is compared, and draws the most qualified conclusion.

The accuracy of manufacture of the present invention is higher, has efficiently controlled dimensional accuracy and technology requirement, and procedure of processing arranges rationally, institute Accessory size and the technical conditions of processing disclosure satisfy that art work sheet requirement, and ensure that the requirement of surface quality of workpieces, improves Production efficiency.

Claims (1)

1. a fan wheel disc circular arc tongue-and-groove processing method, it is characterised in that comprise the following steps:

The first step, parts fixation, select a thickness about 200mm, the aluminum dish of diameter about 450mm to change a social system, the two ends of aluminum dish Che Ping, and go out locating surface according to the dimensioned of part inner stopper, by aluminum dish clamping to machining center, then according to datum hole Position bore an a diameter of 60mm, the degree of depth is the blind hole of 8mm, is inserted the pin of diameter 6mm in blind hole, by the angle of datum hole To being input in workpiece zero address, in the middle of aluminum dish, the screwed hole of 4 M12 of processing, is screwed into double threaded screw, compresses for part With, datum hole is aligned with pin, part is installed on fixture, and centering part benchmark is beated no more than 0.01mm, clamping platen, Circle center after part is installed overlaps with lathe center of rotation；

Second step, circular arc tongue-and-groove Milling Process, during tongue-and-groove Milling Machining, machine spindle under horizontal state, cutter cutter is clicked On the part centre of gyration, axial Y-direction zero point selects to install on limit at part middle front part, in point thick fluting, Milling Machining tongue-and-groove Outside side profile, Milling Machining tongue-and-groove, 3 work steps of profile are processed, and the slotting cutter first by the diameter 12mm of standard successively enters The thick fluting of row, removes the most of surplus in the middle part of tongue-and-groove, and the narrowest place of tongue-and-groove leaves the surplus of 0.5mm, adds feed speed in man-hour For 10mm/min, the speed of mainshaft is 150r/min, and cutter often runs away from workpiece after a tongue-and-groove, and worktable rotary is to next Tongue-and-groove position, is processed according to previous cutter path again, until the surplus of all tongue-and-grooves all being removed, next uses dove-tail form Profile milling cutter processing tongue-and-groove bottom inside profile, processing front projection checks the contour accuracy of cutter, the most progressively processes, The monolateral 0.5mm surplus that leaves during a rear cutter polish, changes a new cutter, to ensure that the contour accuracy of cutter is higher than part Requirement, fills size to after cutter by cutter, and the above-below direction finish-milling one along part encloses, and uses tongue-and-groove model after processing first groove Measure, then process other tongue-and-groove successively, it is ensured that swallow-tail form tongue-and-groove bottom size qualification, finally add with taper profile milling cutter Work outer profile, profile is machined to size by point 2～3 cuttves, and connecting arc ensures by circle R bottom cutter；

3rd step, piece test, the technical conditions such as tongue-and-groove profile tolerance and position degree, carry out at three coordinate measuring machine after processing Scanning, matching, the profile theoretical with part is compared, and draws the most qualified conclusion.