CN115008405A - Flexible combined tool for frame component products and design method - Google Patents
Flexible combined tool for frame component products and design method Download PDFInfo
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- CN115008405A CN115008405A CN202210894432.6A CN202210894432A CN115008405A CN 115008405 A CN115008405 A CN 115008405A CN 202210894432 A CN202210894432 A CN 202210894432A CN 115008405 A CN115008405 A CN 115008405A
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- 238000013461 design Methods 0.000 title claims description 34
- 238000000034 method Methods 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims description 41
- 238000012938 design process Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 description 30
- 238000009434 installation Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention discloses a flexible combination tool for a frame component product, in particular to a large frame component tool adopting MBD digital standard based on aircraft manufacturing technology, which comprises a fixed end positioning seat and a movable end positioning seat which are symmetrical, wherein a pair of guide rails are arranged between the two positioning seats, a ball screw is arranged in the middle of each guide rail, and the movable end positioning seat is fixedly connected with a nut on the ball screw; the two positioning seats are respectively fixed with a positioning disc, the two positioning discs are parallel to each other, each positioning disc is provided with four tool ball holes, and each positioning disc is provided with a plurality of positioning pin holes for positioning the end frame positioner; and a plurality of stringer positioners are arranged on the outer side of the end frame position of each end frame positioner. The length of the assembled large frame type component can be adjusted by adjusting the position of the movable end on the guide rail, and the diameter of the assembled frame type component can be adjusted by replacing the end frame positioner on the positioning seat, so that the flexible combined tool is suitable for assembling large frame type components with different diameters and different lengths.
Description
Technical Field
The invention relates to the field of digital design in the aircraft manufacturing technology, in particular to a flexible combined tool and a design method for assembling an equal-diameter frame component product based on aircraft manufacturing technical equipment.
Background
The economic benefits and social benefits brought by the digital manufacturing method in the aircraft manufacturing industry at home and abroad are widely recognized, the efficiency improvement and the shortening of the development period are obvious in comparison with the traditional manufacturing mode no matter part machining or assembly and component assembly, but the equal-diameter frame component assembly tools with different diameters and lengths are manufactured in respective series at present, so that the manufacturing cost is high, and the occupied area of equipment is increased.
Therefore, for the equal-diameter frame type components with different diameters and lengths, the manufacturing cost and the occupied area of equipment can be greatly reduced through equipment reuse in the manufacturing process.
Disclosure of Invention
The object of the present invention is to solve the problems associated with the background art. A novel flexible combined tool for assembly based on airplane digital manufacturing technology and equipment is provided.
The end frame positioning device is replaced to assemble the frame component sections of the end frames with different diameters, lengths and structural forms, the assembly length of the section is adjusted by controlling the ball screw through the servo motor, and a set of assembly tool can assemble the frame components with different diameters and lengths.
The invention adopts the following technical scheme: the utility model provides a flexible combination frock of frame class component product, wherein: the flexible combined tool comprises a fixed end positioning seat and a movable end positioning seat which are symmetrical, a pair of guide rails is arranged between the two positioning seats, a ball screw is arranged in the middle of each guide rail, and the movable end positioning seat is fixedly connected with a nut on the ball screw; the two positioning seats are respectively fixed with a positioning disc, the two positioning discs are parallel to each other, each positioning disc is provided with four tool ball holes, three of the tool ball holes are used for establishing a coordinate system and installing the positioning disc, the fourth tool ball hole is used for inspection, and each positioning disc is provided with a plurality of positioning pin holes for positioning the end frame positioner; a plurality of stringer positioners are arranged on the outer side of the end frame position of each end frame positioner; the same corresponding device between the fixed end positioning seat and the movable end positioning seat respectively corresponds to the same two coordinate values except the axial coordinate through the MBD digital calibration records of the airplane manufacturing technology, and the design of the MBD digital calibration takes an MBD product engineering data set as a basis.
Further the pair of guide rails are arranged in parallel, and the cross sections of the guide rails are triangular or rectangular.
Furthermore, the ball screw shaft is connected with a servo motor, and the traction force of the servo motor is through the gravity center of the movable end positioning seat.
Furthermore, a locking device is arranged at the guide rail of the movable end positioning seat, and the movable end positioning seat which is adjusted in place is locked on the track through the locking device.
A design method for a frame component product flexible combined tool comprises the following steps:
the method comprises the following steps: establishing a digital standard worker, performing digital standard worker design along with an MBD engineering data set formed according to product design in the parallel design process of products, and extracting three-dimensional dimensions and tolerance of product features marked in the engineering data set into a three-dimensional digital standard worker data set;
step two: designing a flexible combined tool, namely designing a positioning disc, an end frame positioner and a stringer positioner according to coordination characteristics in a digital standard tool; the coordinate system of the flexible combined tool is unified with the coordinate system of the digital standard tool and the coordinate system of the product;
step three: mounting the flexible combined tool, wherein frame members with different diameters need end frame positioners with different diameters, and each end frame positioner needs to be positioned on a positioning disc by a digital measuring device; the positioning disc is also installed in the same way;
step four: and the fixed inspection of the flexible combined tool comprises the inspection of an end frame positioner and a positioning disc and the inspection of a stringer positioner, the inspection basis is a tool inspection data set, and the tool inspection data set is defined by taking a product detection standard in an MBD digital standard as the basis. In addition to the fourth tool ball hole of the end frame positioner and the positioning plate, the functional inspection is also carried out during the regular inspection: and (4) checking the coordinates of the positioning pin holes (4) on the end frame positioner and the position degree of the stringer positioner.
The invention has the beneficial effects that: the flexible combined tool based on the airplane design and manufacturing technology MBD digital standard is adopted in the design and manufacture of the frame type component, so that the manufacturing cost can be obviously reduced, the occupied area of a workshop can be reduced, and the manufacturing and the inspection are easier. The technical problem in the digital manufacturing of large-size products is solved. The frame members with different diameters and lengths can be coordinated, designed and manufactured by the same digital marker in the same coordinate system, so that the required coordination accuracy is achieved and the design and the manufacture are convenient.
Drawings
Fig. 1 is a schematic view of a frame member flexible combined tool of an integral end frame.
Fig. 2 is a schematic view of a frame type member flexible combined tool of a segmented end frame.
In the figure: 1. a movable end positioning seat; 2. positioning a plate; 3. an end frame locator; 4. a positioning pin hole; 5. a tool ball hole; 6. a stringer locator; 7. a guide rail; 9. a ball screw; 10. fixed end positioning seat.
Detailed Description
The technical scheme of the invention is completely described below by combining the attached drawings of the invention.
Example 1:
fig. 1 and 2 show a flexible combined tool for a same frame member, the whole product is an axial combination of a plurality of equal-diameter frame members, and the flexible combined tool is suitable for products with different diameters and different lengths. When the product is replaced, only the end frame positioner 3 needs to be replaced, and the ball screw 9 can be adjusted by controlling the servo motor according to the length of the section to adjust the assembly when different sections of the same product are assembled.
The utility model provides a flexible combined tool who designs according to digital standard worker under the MBD environment, includes two positioning seats about: the fixed end positioning seat 10 and the movable end positioning seat 1 are connected by two guide rails and a ball screw, and are controlled and adjusted by a servo motor. And each positioning seat is provided with a positioning disc, an end frame positioner and a stringer positioner for positioning an end frame and a stringer, the end frame and the stringer are riveted after the end frame and the stringer are positioned, then skin is packaged outside, and riveting assembly is carried out to complete the assembly of frame members. The positioning discs, the end frame positioner and the stringer positioner on the fixed end positioning seat and the movable end positioning seat are completely symmetrical.
Two positioning disks on two positioning seats (the fixed end on the left side and the movable end on the right side) are parallel, four tool ball holes are formed in each positioning disk, three positioning disks are used for establishing a coordinate system and installing the positioning disks (the positioning disks are measured and adjusted by a laser tracker), and the fourth positioning disk is used for inspection. The laser track healer is a high-precision instrument for measuring the coordinate value of a target point, the tool ball is a matched standard component, and the diameter of the tool ball hole is also a standard value. During measurement, the tool ball is placed on the tool ball hole, and the position coordinate of the center of the tool ball hole is displayed by a matched computer. The position coordinate of the tool ball hole is designed by designers, after the positioning disc on the left positioning seat is positioned by two pin holes, the position coordinate of the three tool ball holes is measured by the laser tracking integrator, the laser tracking integrator has the function of establishing a coordinate system, and the coordinate system can be established by the three tool ball holes. And then, mounting a positioning disc on the right positioning seat to ensure that the position coordinates of the three tool ball holes on the positioning disc are consistent with the design coordinate values, and then, the position of the right positioning disc is determined. The positions of the positioning pin holes are also designed, and after the right positioning disc is positioned, the gap between the upper positioning pin and the pin hole on the positioning seat can be filled with glue sand or other substances. The position coordinates of the fourth tool ball hole are also given by design, and the fourth tool ball hole can be used for inspection during tool regular inspection to verify whether the position of the fourth tool ball hole meets the design value of the coordinates;
each positioning disk is provided with a plurality of positioning pin holes for positioning the end frame positioner. The end frame positioner is provided with four tool ball holes, wherein three tool ball holes are used for installing the positioner under the measurement and adjustment of the laser tracker; the fourth tool ball hole was used for inspection: and each end frame positioner is also installed in a coordinate system established by the three tool ball holes of the first positioning plate, and the position coordinates of the three tool ball holes of the end frame positioner accord with the design values, namely the positioning is finished. The inspection of the fourth tool ball hole is the same as the inspection of the position of the fourth tool ball hole of the positioning disc;
each end frame positioner (integral or segmented) is designed with two positioning holes for positioning pins on the positioning plate. Each end frame positioner is also provided with two positioning pin holes for positioning the end frames.
And each end frame positioner is provided with a plurality of stringer positioners, the installation positions of the stringer positioners on the assembly fixture are installed outside the end frame positions by taking a digital marker as a design basis, and the end frames and the stringers are positioned firstly when products are assembled. Each locator locates a stringer.
The guide rails are arranged in parallel, the cross sections of the guide rails are triangular or rectangular, the guide rails can be in triangular-rectangular guide rail configuration, the guide rails can also be in double-triangular guide rail configuration, the double-triangular guide rail configuration precision is higher, but the installation parallelism is required to be extremely high.
The ball screw 9 is connected with a servo motor, and the traction force of the servo motor passes through the center of gravity of the movable end positioning seat. And a locking device is arranged at the guide rail of the movable end positioning seat, and the movable end positioning seat which is adjusted in place is locked on the track through the locking device.
Furthermore, when the whole product is butted, two adjacent sections are positioned by pin holes and then are connected by bolts, the positioning pin holes and the bolt holes of the adjacent sections are required to have a highly coordinated position relationship, namely, the end frame positioners on the two positioning seats are required to have a highly coordinated relationship, and the coordinated relationship is reflected in a digital standard worker. Therefore, when designing products and assembling tools, two coordinate values except axial coordinates of the pin holes of the two end frames and the positioning seat, the bolt holes of the two end frames and the holes of the positioning seat and the holes of the positioning device are required to be respectively corresponding to the same coordinate values.
Example 2:
a design method for a frame component product flexible combined tool comprises the following steps:
step one, digital benchmarking is established. In the parallel design process of the product, parallel designers design digital benchmarks according to an MBD engineering data set formed by product design, label three-dimensional dimensions and tolerance of product features in the data set, extract the three-dimensional digital benchmarks data set, and perfect the design of the digital benchmarks.
The product MBD engineering data set comprises all product data necessary for manufacturing and inspection, wherein the product data comprises geometric information and non-geometric information required for defining a digital standard work model, and partial geometric information is extracted into the digital standard work model. The non-geometric information of the product is included in various related design data, a whole coordinate system, a local coordinate system, a whole reference system, tolerance information of the product and size information.
The coordination data extracted from the design engineering data sets of the frame members with different diameters and different lengths can be defined into the same digital standard work data set, so that the same flexible combined tool for the frame members with different diameters and different lengths can be conveniently coordinated and designed.
The reconciliation data to be defined into the MBD-based digital standard includes: the tool comprises a coordinate system, a coordination characteristic model (hole position characteristic data, hole axial positioning characteristic data and the like), a reference system, pin hole diameters and tolerances thereof, form and position tolerance sizes, pin hole data of a positioner on a positioning disc, positioning data of the positioning disc on a base positioning pin hole, frame axes, stringer axes, positioning pin hole position axes and position tolerances thereof, various requirements of coordination positions, various inspection requirements of the coordination positions, coordination characteristic descriptions required by coordinating various frame components, tool inspection requirements and operation methods for coordinating various relevant requirements of the coordination positions, and tool positioning tolerances required by tool assembly and inspection.
And step two, designing a flexible combined tool. The design of the flexible combined tool is carried out in a digital coordination mode based on the digital standard works, and the design of the positioner 3 of the upper end frame of the tool needs to be designed according to coordination characteristics in the digital standard works. Firstly, the coordinate system of the tool is established to be unified with the coordinate system of the digital marking tool, namely the coordinate system of the product. The positional parameters of the end bell locator 3 with respect to the locating pin holes 4 are taken from the digital calibration phantom. In order to meet the requirement that different sections of the same product need to be assembled by the same assembly tool, the positioning pin holes 4 in the two end frames of each different section need to have two identical corresponding coordinate values except for the axial coordinate, which is needed when the product is designed in the parallel design stage, and the coordinate values are extracted into a digital standard worker. The axial positions of the stringers on each section also have the same corresponding two coordinate values except the axial coordinate, the installation position data of the stringer positioner 6 in the assembly tool is the stringer axial position taken from the digital standard, and the stringer positioner 6 is arranged outside the installation position of the end frame on the end frame positioner 3 so as not to interfere with the end frame. Four tool ball holes are provided on each stringer locator 6. Four tool ball holes are provided on each end frame locator 3. End frame locator 3 needs to be installed on positioning disk 2, and the design position of positioning disk 2 also takes from the relevant data of digital labeller, need design on positioning disk 2 have a plurality of location pinhole 4 for install end frame locator 3, still need set up four instrument ball holes on positioning disk 2. Two guide rails are connected between the movable end positioning seat 1 and the fixed end positioning seat 10, and in order to ensure accurate position coordinates when the movable end moves, a pair of guide rails can be designed into a triangular-rectangular mode or a double-triangular mode. The ball screw 9 is used for adjusting the axial coordinate position of the moving end, and needs to be controlled by a numerical control system, so that the servo motor drives the moving end to operate and adjust.
And step three, installing the flexible combined tool. Each endbell locator needs to be located with two locating pins, different diameter rim members need different diameter endbell locators 3, and each endbell locator 3 needs to be located on the locating plate 2 with a digital measuring device (laser tracker). During specific installation, the laser tracker is used for measuring the coordinate value of a tool ball hole 5 on an end frame positioner 3, so that the coordinate value accords with the design coordinate value, three tool ball holes are used for positioning and installation, the end frame positioner 3 is positioned on a positioning disc 2 on a positioning seat, a positioning pin hole 4 on the positioning disc 2 is slightly larger than the diameter of a positioning pin on the end frame positioner 3, uneven gaps can be filled with substances such as sand, the accumulation of positioning errors is eliminated, and then three screw holes are fastened on the positioning disc 2.
When the positioning disc 2 on the second positioning seat is installed, a coordinate system is established by the three tool ball holes 5 on the positioning disc 2 on the first positioning seat, so that the parallelism of the positioning discs 2 on the two positioning seats can be ensured, and error accumulation is eliminated. Each end frame locator 3 and stringer locator 6 are then mounted in the same coordinate system.
When the flexible combined tool is adjusted, the positions of the movable end and the end frame positioner 3 are adjusted by the tool control system, the position information of a positioning tool ball point 5 on the tool is measured in real time by the laser tracker, the measured data is compared with the theoretical position data of the tool ball, and if the measured data is not in the error range, the motion compensation is needed. And after the ball points 5 of all the reference tools are accurately positioned, clamping can be carried out, and installation is finished.
And step four, performing regular inspection on the flexible combined tool, wherein the regular inspection on the frame component flexible combined tool comprises inspection of the end frame positioner 3 and the positioning disc 2 and inspection of the stringer positioner 6, the inspection basis is a tool inspection data set, and the tool inspection data set is defined by taking a product inspection standard in the MBD digital standard as the basis. In the regular inspection, besides the inspection of the end frame positioner 3 and the fourth tool ball hole 5 of the positioning disk 2, functional inspection is also performed, mainly the coordinate inspection of the positioning pin hole 4 on the end frame positioner 3 and the position degree inspection of the stringer positioner 6.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a flexible combination frock of frame class component product which characterized in that: the flexible combined tool comprises a fixed end positioning seat (10) and a movable end positioning seat (1) which are symmetrical, a pair of guide rails (7) is arranged between the two positioning seats, a ball screw (9) is arranged in the middle of each guide rail, and the movable end positioning seat is fixedly connected with a nut on the ball screw; the two positioning seats are respectively fixed with a positioning disc (2), the two positioning discs are parallel to each other, each positioning disc is provided with four tool ball holes (5), three of the tool ball holes are used for establishing a coordinate system and installing the positioning disc, the fourth tool ball hole is used for inspection, and each positioning disc is provided with a plurality of positioning pin holes (4) for positioning end frame positioners (3); a plurality of stringer positioners (6) are arranged on the outer side of the end frame position of each end frame positioner;
the same corresponding devices between the fixed end positioning seat (10) and the movable end positioning seat respectively correspond to the same two coordinate values except the axial coordinate through MBD digital standard records of airplane manufacturing technology.
2. The frame member product flexible combined tool according to claim 1, wherein the pair of guide rails are arranged in parallel, and the cross section of each guide rail is triangular or rectangular.
3. The flexible combined tool for frame component products according to claim 1, wherein the ball screw (9) is connected with a servo motor in a shaft mode, and the traction force of the servo motor passes through the center of gravity of the movable end positioning seat.
4. The frame member product flexible assembling tool according to claim 1, wherein a locking device is provided at the guide rail of the moving end positioning seat, and the moving end positioning seat adjusted in position is locked on the rail by the locking device.
5. The frame member product flexible combination tool according to claim 1, wherein the design of the MBD digital standard is based on an MBD product engineering data set.
6. A design method for a frame component product flexible combined tool is characterized by comprising the following steps:
the method comprises the following steps: establishing a digital standard, performing digital standard design along with an MBD engineering data set formed according to product design in the parallel design process of products, and extracting three-dimensional dimensions and tolerance of product features marked in the engineering data set into a three-dimensional digital standard data set;
step two: designing a flexible combined tool, namely designing a positioning disc, an end frame positioner and a stringer positioner according to coordination characteristics in a digital standard tool; the coordinate system of the flexible combined tool is unified with the coordinate system of the digital standard tool and the coordinate system of the product;
step three: mounting the flexible combined tool, wherein frame members with different diameters need end frame positioners with different diameters, and each end frame positioner needs to be positioned on a positioning disc by a digital measuring device; the positioning disc is also installed in the same way;
step four: and the fixed inspection of the flexible combined tool comprises the inspection of an end frame positioner and a positioning disc and the inspection of a stringer positioner, the inspection basis is a tool inspection data set, and the tool inspection data set is defined by taking a product detection standard in an MBD digital standard as the basis.
7. The design method of the frame component product flexible combined tool according to claim 6, characterized in that in the step four, in addition to the fourth tool ball hole of the end frame positioner and the positioning plate, functional inspection is performed: and (4) checking the coordinates of the positioning pin holes (4) on the end frame positioner and the position degree of the stringer positioner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210894432.6A CN115008405A (en) | 2022-07-28 | 2022-07-28 | Flexible combined tool for frame component products and design method |
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| CN202210894432.6A CN115008405A (en) | 2022-07-28 | 2022-07-28 | Flexible combined tool for frame component products and design method |
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2022
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Application publication date: 20220906 |