CN106475611B - A kind of automatic compensation processing method of annular web class casting - Google Patents
A kind of automatic compensation processing method of annular web class casting Download PDFInfo
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- CN106475611B CN106475611B CN201611033813.6A CN201611033813A CN106475611B CN 106475611 B CN106475611 B CN 106475611B CN 201611033813 A CN201611033813 A CN 201611033813A CN 106475611 B CN106475611 B CN 106475611B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
Abstract
A kind of automatic compensation processing method of annular web class casting, belongs to Computerized Numerical Control processing technology field.Including：Part rotation center is overlapped with table core, if a pair of of support plate center line and workbench fixing axle X or theory Z angle are a；By part rotated counterclockwise by angle a, keep support plate center line parallel with fixing axle X or Z, obtains support plate center line to part rotation center theory vertical range b；Two sections are selected, angle difference a1 between support plate actual center line and theoretical centerline is calculated；According to a1 rotary tables, support plate angle is corrected；Third section is selected, obtains correcting rear carrier plate center line, obtains and corrects rear carrier plate center line to part rotation center vertical range b1；The difference of b1 and b is assigned to the general global variable parameter of lathe by the b1 for determining each pair of support plate；Nc program gets up processing dimension and b1 global variable parameter associations corresponding with the difference of b, when processing, the global variable parameter is called to realize automatic compensation processing.
Description
Technical field
The invention belongs to Computerized Numerical Control processing technology field, the automatic compensation more particularly to a kind of annular web class casting is processed
Method is suitable for the different NC systems such as CNC milling machine, Siemens, farad gram.
Background technology
In aero-engine field, there are some annular frame precision castings with dispersion shape spoke, these parts are inside and outside
There are multiple support plates between ring, as shown in Figure 1, there is the boss face for needing to process and hole characteristic at two side position of support plate,
There are the dimension relationship relationships of degree of precision for these boss processing back edge profile and support plate center line and outer surface.Due to this zero
Part is that there are larger manufacturing tolerances for monoblock cast, support plate and inner and outer rings, and part Working position is caused to use digital control processing very
Difficulty needs to be manually adjusted according to each part status, and processing efficiency is low, influences to realize automation batch machining.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of annular web class promoting processing efficiency and quality
The automatic compensation processing method of casting, the method achieve the automatic compensation of the unstable position of frame precision casting branch Board position to add
Work.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of automatic compensation of annular web class casting
Processing method includes the following steps：
Step 1：Part rotation center is kept overlapping with platen center, and is fixed by fixture, if part
Theoretical angle between the support plate theoretical centerline of a pair of of support plate and the fixing axle X or Z of platen is a；
Step 2：By part rotated counterclockwise by angle a, make the support plate theoretical centerline of a pair of of support plate described in step 1
It is parallel with the fixing axle X or Z of platen, obtain the support plate theoretical centerline to support plate to part rotation center theory
Vertical range b；
Step 3：This to selecting section different at two respectively close to machining area position on support plate, by surveying online
The both sides for measuring section, obtain two respective virtual center points in section, while obtaining the respective theoretical center in described two sections
Point；The virtual center point in two sections of connection obtains support plate actual center line, and the theoretical center point in two sections of connection is propped up
Plate theory center line；By applying trigonometric function relationship, this is calculated to support plate machining area measuring point support plate practical center
Angle difference a1 between line and support plate theoretical centerline；
Step 4：According in step 3 it is calculated this to support plate machining area measuring point support plate actual center line with branch
Angle difference a1 between plate theory center line rotates platen, corrects the angle to support plate；
Step 5：Third section is selected between two sections described in step 3, passes through the on-line measurement section
Both sides, obtain the virtual center point in the section, cross the virtual center point and do a straight line for being parallel to support plate theoretical centerline,
The straight line is revised support plate center line, obtain revised support plate center line to part rotation center vertical range
b1；
Step 6：The theoretical vertical range b of the support plate theoretical centerline of each pair of support plate to part rotation center be it is identical,
The vertical range b1 of each pair of support plate revised support plate center line to part rotation center is different, using step 1 to step
Method described in five determines the revised support plate center line of each pair of support plate to the vertical range b1 of part rotation center, and it is each right to obtain
The difference of support plate b1 and b, and the difference is assigned to the general global variable parameter of lathe, interim storage successively；
Step 7：Nc program uses global variable programming mode, and processing dimension and b1 is corresponding with the difference of b
Global variable parameter association gets up, when processing, call b1 global variable parameters corresponding with the difference of b realize automatic compensation plus
Work ensures part actual processing demand.
Beneficial effects of the present invention：
It is unstable that the present invention solves such spray size, it is difficult to the problem of digital control processing.
It is proven：The processing method of the present invention is greatly improved in the outer mold surface processing of complicated casing part
The processing efficiency of such part by numerical control lathe, eliminates the human intervention of process, reduces the stand-by period of lathe, convenient
The arrangement of Workshop Production task.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of annular web class casting；
Fig. 2 is by the schematic diagram after part rotated counterclockwise by angle a shown in FIG. 1；
Fig. 3 is to select the schematic diagram of section and determining support plate actual center line and support plate theoretical centerline at two；
Fig. 4 is the angle difference calculated using trigonometric function relationship between support plate actual center line and support plate theoretical centerline
The schematic diagram of a1；
Fig. 5 is the schematic diagram for selecting third section and determining revised support plate center line；
In figure：1-outer shroud, 2-inner ring, 3-support plates, 4-boss, 5-platen centers and part rotation center,
6-support plate actual center lines, 7-support plate theoretical centerlines, 8-revised support plate center lines.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
A kind of automatic compensation processing method of annular web class casting, includes the following steps：
Step 1：Part rotation center is kept overlapping with platen center, and is fixed by fixture, such as Fig. 1 institutes
Show, if the theoretical angle between the support plate theoretical centerline of a pair of of support plate of part and the fixing axle X or Z of platen is a；
Step 2：By part rotated counterclockwise by angle a, make the support plate theoretical centerline of a pair of of support plate described in step 1
It is parallel with the fixing axle X or Z of platen, as shown in Fig. 2, showing that the support plate theoretical centerline to support plate is rotated to part
The theoretical vertical range b at center, b values each support plate in actual parts is fixed；
Step 3：Section C-C and D-D different at two are selected respectively to close machining area position on support plate at this, led to
The both sides for crossing on-line measurement section obtain the respective virtual center point C1 and D1 in two sections, while obtaining described two sections
Respective theoretical center point C2 and D2；The virtual center point C1 and D1 in two sections of connection obtain support plate actual center line 6, connect
The theoretical center point C2 and D2 in two sections obtains support plate theoretical centerline 7, as shown in Figure 3；By applying trigonometric function relationship,
Calculate the angle difference between support plate machining area measuring point support plate actual center line 6 and support plate theoretical centerline 7
A1, as shown in Figure 4；
Tg a1=d/c
In formula, angles of the a1-between support plate machining area measuring point support plate actual center line and support plate theoretical centerline
Difference, two sections d-are in the difference in height of vertical direction, two section differences in height in the horizontal direction of c-；
Step 4：According in step 3 it is calculated this to support plate machining area measuring point support plate actual center line 6 with
Angle difference a1 between support plate theoretical centerline 7 rotates platen, corrects the angle to support plate；
Step 5：Third section E-E is selected between two sections C-C and D-D described in step 3, by online
The both sides for measuring the section show that the virtual center point in the section, the excessively virtual center point are done one and be parallel in branch plate theory
The straight line of heart line 7, the straight line are revised support plate center line 8, in showing that revised support plate center line 8 is rotated to part
The vertical range b1 of the heart, as shown in Figure 5；
Step 6：The theoretical vertical range b of the support plate theoretical centerline of each pair of support plate to part rotation center be it is identical,
The vertical range b1 of each pair of support plate revised support plate center line to part rotation center is different, using step 1 to step
Method described in five determines the revised support plate center line of each pair of support plate to the vertical range b1 of part rotation center, and it is each right to obtain
The difference of support plate b1 and b, and the difference is assigned to the general global variable parameter of lathe successively (the R series of such as Siemens becomes
Amount), interim storage；
Step 7：These unstable sizes of numerically controlled machining programme ordered pair use global variable programming mode, by processing dimension
And b1 global variable parameter associations corresponding with the difference of b get up, and when processing, call b1 global variables corresponding with the difference of b
Parameter realizes automatic compensation processing, ensures part actual processing demand.
Claims (1)
1. a kind of automatic compensation processing method of annular web class casting, which is characterized in that include the following steps：
Step 1：Part rotation center is kept overlapping with platen center, and is fixed by fixture, if a pair of part
Theoretical angle between the support plate theoretical centerline of support plate and the fixing axle X or Z of platen is a；
Step 2：By part rotated counterclockwise by angle a, make the support plate theoretical centerline and machine of a pair of of support plate described in step 1
The fixing axle X or Z of bed workbench are parallel, obtain the support plate theoretical centerline to support plate to part rotation center it is theoretical vertically
Distance b；
Step 3：Section different at two is selected respectively to close machining area position on support plate at this, passes through on-line measurement and cuts
The both sides in face obtain two respective virtual center points in section, while obtaining the respective theoretical center point in described two sections；Even
The virtual center point for connecing two sections obtains support plate actual center line, and the theoretical center point in two sections of connection obtains branch plate theory
Center line；By applying trigonometric function relationship, this is calculated to support plate machining area measuring point support plate actual center line and branch
Angle difference a1 between plate theory center line；
Step 4：According in step 3 it is calculated this to support plate machining area measuring point support plate actual center line and branch foliation
By the angle difference a1 between center line, platen is rotated, the angle to support plate is corrected；
Step 5：Third section is selected between two sections described in step 3, passes through the two of the on-line measurement section
Side obtains the virtual center point in the section, crosses the virtual center point and does a straight line for being parallel to support plate theoretical centerline, this is straight
Line is revised support plate center line, obtain revised support plate center line to part rotation center vertical range b1；
Step 6：The theoretical vertical range b of the support plate theoretical centerline of each pair of support plate to part rotation center be it is identical, it is each right
The vertical range b1 of support plate revised support plate center line to part rotation center is different, using step 1 to step 5 institute
The method stated determines that the revised support plate center line of each pair of support plate to the vertical range b1 of part rotation center, obtains each pair of support plate
The difference of b1 and b, and the difference is assigned to the general global variable parameter of lathe, interim storage successively；
Step 7：Nc program uses global variable programming mode, by processing dimension and the b1 overall situations corresponding with the difference of b
Variable parameter associates, and when processing, calls b1 global variable parameters corresponding with the difference of b to realize automatic compensation processing, protects
Demonstrate,prove part actual processing demand.
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| CN111552232A (en) * | 2020-04-03 | 2020-08-18 | 中国航发哈尔滨东安发动机有限公司 | Single machine calculation-free automatic alignment processing method |
| CN111390252B (en) * | 2020-04-24 | 2022-05-10 | 成都飞机工业（集团）有限责任公司 | Machining method for high-precision lug set of aviation structural part |
| CN114061635A (en) * | 2021-11-23 | 2022-02-18 | 黑龙江建龙钢铁有限公司 | Position measuring method for substituting absolute value encoder |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |