CN101412180A - Processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group - Google Patents

Abstract

The invention discloses a process for machining a main stander of a speed increaser of a large-scale wind generating set. The process comprises the following steps: (1) a workpiece is clamped on a rotary worktable of a numerical control horizontal type boring-milling machine through a fixture; a coordinate zero point A (X1, Z1) of the first machining surface is determined through lineation by a locksmith to complete the machining of the first machining surface; (2) an A value of an included angle between the second machining surface and the first machining surface is input through a man-machine conversation interface of a microcomputer consisting of a keyboard and a display device; CPU of the microcomputer calculates the values of coordinates XB and ZB of the zero point of the second machining surface according to the following steps: delta X is equal to X1-X0, delta Z is equal to Z1-Z0; L is equal to delta X<2>+delta Z<2>; alpha is equal to arctg(delta X/delta Z); beta is equal to A-alpha; delta XB is equal to LSINbeta; delta ZB is equal to LCOS beta; XB is equal to delta XB+X0; ZB is equal to delta ZB+Z0, wherein the X0 and Z0 are coordinate values of the center of the rotary worktable, and the machining of the second machining surface is finished; and (3) the step two is repeated to complete the machining of all the surfaces to be machined. The process utilizes the numerical control rotary worktable of the numerical control machine tool and an R parameter program which can be identified through the numerical control machine tool to calculate and determine the zero point of another machining surface to be machined, thereby ensuring the accuracy of the relative position of a required part of the workpiece.

Description

Processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group

Technical field

The present invention relates to a kind of processing technology, particularly relate to a kind of processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group.

Background technology

1.5KW main frame of speed-increasing gear of large-sized wind-driven generator group is the vitals in the wind power generating set, at its design feature, preparation method in the past is: at first pincers worker line, consider the difficulty of processing of postorder, this step requires pincers worker to rule must be very accurate, this line is not only as the reference line of postorder, also as the orthotic line of final processing dimension.Secondly, in processing, come indirect measuring position size, just occurred cumulative errors such as measurement, tool setting here, directly influence the precision of product by the way (as by pin or true edge) of indirect measurement.In addition, since the rack construction complexity, the difficulty that is installed, and be easy to generate the distortion that is installed.Simultaneously, influenced by Workpiece structure, the scene adds man-hour, and workpiece is easy to generate displacement.These factors directly influence the Accuracy of finish of workpiece.

Summary of the invention

The present invention provides a kind of processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group that can improve machining accuracy for solving the technical problem that exists in the known technology.

The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group, may further comprise the steps: (one) is installed on workpiece on the rotary table of numerical control horizontal boring and milling machine by frock, determine coordinate A at the zero point (X1 of first machined surface by the pincers worker line, Z1), finish the processing of first machined surface; (2) import included angle A value between second machined surface and first machined surface by the microcomputer man-machine dialog interface of being made up of keyboard and display, the CPU of microcomputer calculates the coordinate XB at zero point of second machined surface, the value of ZB: Δ X=X1-X0 according to the following step; Δ Z=Z1-Z0;

α=arctg (Δ X/ Δ Z); β=A-α; Δ XB=LSIN β; Δ ZB=LCOS β; XB=Δ XB+X0; ZB=Δ ZB+Z0; X0 wherein, Z0 is the coordinate figure at turntable center; Finish the processing of second machined surface; (3) repeating step (two) is until finishing the processing that all desire machined surface.

Advantage and good effect that the present invention has are: the NC rotary table that utilizes Digit Control Machine Tool, after a machined surface position of workpiece is determined, rotation by turntable, the R parameter program of utilizing Digit Control Machine Tool to discern is calculated the zero point of determining another machined surface to be processed, thereby the position relative position that guarantees the requirement on the workpiece is accurate.Improve the machining accuracy of workpiece, and improved operating efficiency, reduced labour intensity.

Description of drawings

Fig. 1 is process principle figure of the present invention;

Fig. 2 is a mainframe C datum level processing schematic diagram;

Fig. 3 is a mainframe B datum level processing schematic diagram.

The specific embodiment

For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

At main frame of speed-increasing gear design feature and the high requirement of machining accuracy, the processing and fabricating of this product has been carried out special project verification research, make scientific and reasonable processing technology scheme.The present invention is the NC rotary table that utilizes Digit Control Machine Tool, after a machined surface position of workpiece is determined, by the rotation of turntable, utilizes the R calculation of parameter to determine zero point when another machined surface of processing.Thereby the position relative position of the requirement on the assurance workpiece is accurate.

At first, analyze drawing, clear and definite Workpiece structure is determined working position.Secondly, carry out industrial analysis and calculating.According to the relation of the position between the position to be processed, analysis can utilize the numerical control horizontal boring and milling machine to process.Workpiece is placed on the NC rotary table,, promptly can realizes the processing of each face by the rotation of workbench.Because the centre of gyration of NC rotary table is the (X0 that fixes, W0, Z0, V0), it can utilize method such as technological datum to measure, and the rotation of workpiece on rotary table can be regarded as around the centre of gyration in rotation like this, when workpiece after the initial position on the turntable is determined, rotate after a certain angle, the position at its place can be calculated, and this is a more common trigonometric function relation.As shown in Figure 1, among Fig. 1, the coordinate at turntable center be O (X0, Z0), the coordinate of workpiece initial position is: A (X1, Z1), the angle of required commentaries on classics is A, the position at place, rotation back be B (XB, ZB).Specifically be calculated as follows:

ΔX=X1-X0；ΔZ=Z1-Z0； α=arctg(ΔX/ΔZ)

β＝A-α；ΔXB＝LSINβ；ΔZB＝LCOSβ；

After the workpiece edge was rotated counterclockwise an angle A so, the position at workpiece centre place was: XB=Δ XB+X0, ZB=Δ ZB+Z0.In addition, because workpiece is placed on the turntable, its position is uncertain, and the initial position that is to say workpiece centre is arbitrarily.If utilize the artificial postrotational position of workpiece of calculating, comparatively bother, especially more outstanding concerning producing in batches.So worked out the R parameter program that Digit Control Machine Tool can be discerned according to aforementioned principles:

％MPF1

G17

R1＝；X?Value?of?the?center?of?the?Rotate?Table

R2＝；Z?Value?of?the?center?of?the?Table?to?center?slots

R3＝；X?value?is?the?zero?of?thework-piece

R4＝；Z?value?is?the?zero?of?the?work-piece

R5＝R4-R2； ^**Z

R6＝R1-R3； ^**X

R7＝SQRT(POT(R5)+POT(R6))

R8＝R6/R7

R9＝ASIN(R8)

R10＝α1；rotate?angleα1，α2

R11＝R10-R9

R12＝SIN(R11)

R13＝COS(R11)

R14＝R7*R12+R1( ^**X0)

R15＝R7*R13+R2( ^***Z0)

M05

M30

R1 in the program, R2 are respectively the X coordinate and the Z coordinate at turntable center, are known, and it can provide by lathe producer, or by measuring.After upward living at every turn, according to line, determine workpiece centre (R3, R4), R3 is the X coordinate, R4 is the Z coordinate, with its value input program, the angle [alpha] that workpiece will rotate is imported R10 for 1 °, press lathe execute key (CYCLESTART), just can calculate R14, the value of R15, they are respectively the X coordinate and the Z coordinate of rotation back workpiece centre.With the corresponding coordinate system of its value input, can process accordingly.In addition, concerning main frame of speed-increasing gear, except understanding above-mentioned process principle, also have a problem must will be clear that that is exactly: no matter how workpiece rotates, and its inner mutual relation is constant, and just visual angle change causes that phasor coordinate changes.After understanding this problem, just the processing of this mainframe can have been analyzed.

At first, the A datum level is processed, as Fig. 2, the coordinate of this face is that (R3, R4), be to determine by the line that pincers worker is drawn this zero point to A zero point.When processing B datum level, need rotate 1 ° of platform center rotation alpha of workpiece, as Fig. 3, at this moment former coordinate A at zero point rotates to A " point, by working procedure %MPF1, can calculate its coordinate A " (R14, R15), according to the mutual vector correlation of A datum mark and B datum mark, then the coordinate of B datum mark is: XB=R14-L1, ZB=R15+L2.Just determined the zero point of processing B datum level like this.In like manner, also can calculate the zero point of processing D datum level.

More than the main making problem of having introduced main frame of speed-increasing gear from the processing technology aspect.This workpiece is to utilize the precision of Digit Control Machine Tool to guarantee the precision of workpiece.Can see, not only can improve the machining accuracy of workpiece, and improve operating efficiency, reduce labour intensity by the present invention.

The main frame of speed-increasing gear of large-sized wind-driven generator group process:

1. process the A benchmark place earlier: zeroing G54:X0 is the turntable center, and Y0 is a workpiece centre, thick finish-milling C datum level, and bore hole bores tapping etc.;

2. the turntable rotation alpha is processed the B benchmark place for 1 °: operation %MPF50 program, and zeroing G55:X0 provides data to decide R14-L1 according to technology, and Y0 is that workpiece centre is constant, and Z0 is R15+L2.The annular stopper face is milled in interpolation, bores tapping;

3. the turntable rotation alpha is processed the C benchmark place for 2 °: operation %MPF50 program, and zeroing G56:X0 provides data to decide R14+L4 according to technology, and Y0 is that workpiece centre is constant, and Z0 is R15+L3.Thick this D datum level of finish-milling bores tapping.

Claims (1)

1. a processing technique for main frame of speed-increasing gear of large-sized wind-driven generator group is characterized in that, may further comprise the steps:

(1) workpiece is installed on by frock on the rotary table of numerical control horizontal boring and milling machine, ruling by pincers worker, (X1 Z1), finishes the processing of first machined surface to the coordinate A at zero point that determines first machined surface;

(2) import included angle A value between second machined surface and first machined surface by the microcomputer man-machine dialog interface of being made up of keyboard and display, the CPU of microcomputer calculates the coordinate XB at zero point of second machined surface, the value of ZB: Δ X=X1-X0 according to the following step; Δ Z=Z1-Z0; $L=\sqrt{\mathrm{\&Delta;}{X}^2+{\mathrm{\&Delta;Z}}^2}$ α=arctg (Δ X/ Δ Z); β=A-α; Δ XB=LSIN β; Δ ZB=LCOS β; XB=Δ XB+X0; ZB=Δ ZB+Z0; X0 wherein, Z0 is the coordinate figure at turntable center; Finish the processing of second machined surface;

(3) repeating step (two) is until finishing the processing that all desire machined surface.

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