CN115446631B - Automatic clamping device for machining airplane seat slide rail - Google Patents
Automatic clamping device for machining airplane seat slide rail Download PDFInfo
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- CN115446631B CN115446631B CN202211169044.8A CN202211169044A CN115446631B CN 115446631 B CN115446631 B CN 115446631B CN 202211169044 A CN202211169044 A CN 202211169044A CN 115446631 B CN115446631 B CN 115446631B
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- block
- clamping
- slide rail
- positioning
- seat slide
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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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides an automatic clamping device for machining an airplane seat sliding rail, and belongs to the technical field of machining and clamping of airplane parts in the aviation manufacturing direction. The device comprises a base assembly and a plurality of groups of positioning and clamping assemblies. The automatic fixture solves the clamping problem of the aircraft seat slide rail in the processing process, and solves the problems of high labor intensity and long production auxiliary time of manual clamping; the thrust of the air cylinder is accurately adjustable, so that the problem that the clamping force is uncontrollable in the clamping process is solved; the position transmitter on the air cylinder is used for replacing a typing table, so that the operation flow of workpiece clamping is simplified; the flexible design of fixture modularization and quick-change gasket makes a set of frock be applicable to the clamping of the wide and narrow flange processing of same series multiple part, has increased the commonality of frock, has reduced research and development manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of aircraft part machining and clamping in the aviation manufacturing direction, and relates to an automatic clamping device for machining an aircraft seat slide rail, which is used for efficiently clamping seat slide rail parts.
Background
In the field of aviation equipment manufacturing, there is a typical aircraft seat slide rail type part, and the part belongs to a thin-wall stringer, is generally made of aluminum alloy or aluminum magnesium alloy, is softer in material, and is easy to generate integral torsion and local bending deformation. In the numerical control machining process, rough/fine machining is often required to be carried out on the two flange edges and the outer surface profile of the airplane seat slide rail in a milling mode, so that in the machining process, it is very important to ensure that the parts have good positioning precision, clamping rigidity and stability.
In actual production, the webs of the seat slide rails of the aircraft are laterally propped up by a plurality of groups of wedge-shaped block ejection mechanisms which are arranged in a straight line, an operator needs to sequentially and manually screw up the wedge-shaped blocks to clamp the parts, bending and tilting of the parts on the flange surfaces can only be corrected by bare hands of the operator or pressing by putting heavy objects in the clamping process, and after the workpieces are clamped, deviation of the straightness of the blanks of the whole parts is corrected by the way of marking the surfaces and adjusting ejection of the wedge-shaped block mechanisms. The traditional clamping method has long production auxiliary time and high labor intensity of workers, is easy to form an indentation on the clamping surface of the part due to uncontrollable clamping force caused by manual operation, and is not suitable for machining the wide and narrow two flanges of the same part.
In recent years, related documents have also proposed solutions to such part clamping problems. In 2015, jiangsu Sanshun industrial limited discloses an I-shaped section fixture in patent CN205630040U, and the fixture is driven by an air cylinder, so that a plurality of I-shaped materials can be positioned simultaneously, but the fixture can interfere with a cutter when a flange is milled. In 2014, yutai mechanical Limited liability company in Tianjin discloses an I-steel clamping device in a patent CN204053517U, and the clamping device adopts a gear-rack transmission mechanism to apply force to clamp a workpiece, has a simple structure, and is suitable for steel with good rigidity and difficult deformation. In 2016, the aviation industry group Limited liability company of Jiangxi flood discloses an I-shaped section bar numerical control clamping device in a patent CN106002364A, and the device is suitable for machining and clamping similar parts with the same blank specification.
In the method, no mention is made of an automatic clamping device for processing the aircraft seat slide rail.
Disclosure of Invention
The invention mainly solves the technical problem of overcoming the defects of the method, and provides a device capable of automatically clamping the aircraft seat slide rail aiming at the clamping problem in the processing of the aircraft seat slide rail. The clamping device adopts high-pressure gas as a power source to drive the cylinder to act, so that automatic clamping of parts and accurate control of clamping force are realized; the modularized design realizes the flexible clamping of parts of the same series and different types; the design of the quick-change gasket is adopted, and the quick-change gasket is suitable for supporting and clamping of the flanges with different widths of the same type of parts.
The technical scheme adopted by the invention is as follows:
an automatic clamping device for processing an airplane seat slide rail comprises a base assembly I and a plurality of groups of positioning and clamping assemblies II.
The base assembly I comprises a bottom plate 1, an end positioning block 2 and a lifting screw 3. The bottom plate 1 is used for supporting the whole clamping device, is positioned through a positioning pin, and is fixedly connected with a machine tool workbench through a bolt. The end positioning block 2 is arranged at the end of the bottom plate 1 and used for positioning the end of the clamped aircraft seat slide rail; and screw holes in four corner areas of the bottom plate are respectively provided with a lifting ring screw 3, so that the lifting is convenient.
The positioning and clamping assembly II comprises a positioning support block 4, a limiting block 5, a lateral jacking cylinder 6, a lateral jacking block 7, a rotary compacting cylinder 8, a vertical compacting block 9 and a quick-change gasket 10. The positioning support block 4 is fixed on the bottom plate 1 through bolts, a protruding support table is machined on the inner edge of the upper surface of the positioning support block, the inner side surface of the positioning support block 4 and the support table are respectively close to and attached to the inner surfaces of the web plate and the flange of the to-be-machined airplane seat sliding rail, and parts are positioned.
The limiting block 5 is positioned at the inner side of the positioning support block 4 and plays a role in limiting a workpiece; the edge of the upper surface of the side, which is close to the positioning support block 4, is processed with a protruding support table which is used for being close to and attached to the inner surface of the flange of the airplane seat slide rail to be processed; the lower part of the lateral jacking block 7 is provided with enough installation space. The upper surfaces of the positioning support block 4 and the limiting block 5 are respectively provided with a guide groove and four strong magnet adsorption fixing positions for being matched with the quick-change gasket 10. The bottom surface of the quick-change gasket 10 is provided with a strong magnet and a sliding block mechanism, the quick-change gasket slides through guide grooves on the positioning support block 4 and the limiting block 5, and the quick-change gasket is adsorbed on the positioning support block 4 and the limiting block 5 at a fixed position.
The lateral jacking block 7 is of an integral structure with an L-shaped cross section formed by a vertical plate and a transverse plate, is connected with the limiting block 5 and is positioned below the limiting block 5, and meanwhile, the vertical plate of the lateral jacking block 7 is positioned between the positioning supporting block 4 and the inner side surface of the limiting block 5.
The lateral jacking cylinder 6 is fixedly installed with the bottom plate 1 through a foot rest, and a push-out rod of the lateral jacking cylinder 6 is connected with the lateral jacking block 7.
The web of the aircraft seat slide rail is arranged between the vertical plate of the lateral tightening block 7 and the inner side surface of the positioning support block 4, the flange of the aircraft seat slide rail is arranged on the support tables of the positioning support block 4 and the limiting block 5 and the end surface of the vertical plate of the lateral tightening block 7, and the lateral tightening block 7 is driven by the lateral tightening cylinder 6 to clamp or loosen the aircraft seat slide rail.
The rotary compression cylinder 8 is fixedly connected with the bottom plate 1 through a long bolt and is positioned at the outer side of the positioning support block 4; the pressing plate end at the top of the rotary pressing cylinder 8 is connected with a vertical pressing block 9 in a welding mode, and the vertical pressing block 9 is located above the supporting table of the supporting block 4 and the limiting block 5 and used for pressing on the vertical direction of a workpiece. The mechanism of rotary lifting or pressing of the rotary pressing cylinder 8 can avoid interference between the clamping device and the cutter in the machining process.
The operation method of the automatic clamping device for processing the airplane seat slide rail comprises the following steps:
firstly, according to the model of the part to be processed, the number of cylinders for clamping is selected, and the clamping force of the lateral jacking cylinder 6 and the rotary compacting cylinder 8 is set. When the wide flange of the part is processed, in order to prevent the vibration from influencing the processing quality during the processing of the workpiece, the quick-change gaskets 10 on the positioning support block 4 and the limiting block 5 are pushed to the supporting position of the wide flange of the part along the guide groove and are sucked and fixed by the strong magnet; when the narrow flange of the part is machined, the tool is prevented from interfering with the cutter in the machining process, the cutter is collided, and the quick-change gaskets 10 on the positioning support block 4 and the limiting block 5 are withdrawn from the workpiece support area to the edge position and are sucked and fixed by the strong magnet.
After the preparation work is finished, the workpiece is placed in the tool, the end face of the slide rail of the airplane seat is propped against the end positioning block 2, the upper vertical compression block 9 is driven by the rotary compression cylinder 8 to vertically compress, the bending and tilting of the flange face of the part are corrected, and the inner surface of the flange of the workpiece is tightly attached to the support tables of the positioning support block 4 and the limiting block 5. Subsequently, the lateral propping cylinder 6 drives the lateral propping block 7 to prop against the workpiece, the friction force of lateral clamping is used for providing the clamping force of the part in the vertical direction, and the rotary pressing cylinder 8 is controlled to drive the vertical pressing block 9 to rotate and lift up at the moment, so that interference with a cutter in the machining process is avoided, a program is started, and workpiece machining is performed.
After the machining is finished, the lateral jacking cylinder 6 is retracted, the lateral jacking block 7 is loosened, and the workpiece is taken out.
The invention has the beneficial effects that: the automatic fixture solves the clamping problem of the aircraft seat slide rail in the processing process, and solves the problems of high labor intensity and long production auxiliary time of manual clamping; the thrust of the air cylinder is accurately adjustable, so that the problem that the clamping force is uncontrollable in the clamping process is solved; the position transmitter on the air cylinder is used for replacing a typing table, so that the operation flow of workpiece clamping is simplified; the flexible design of fixture modularization and quick-change gasket makes a set of frock be applicable to the clamping of the wide and narrow flange processing of same series multiple part, has increased the commonality of frock, has reduced research and development manufacturing cost.
Drawings
Fig. 1 is a schematic diagram of the overall structure.
Fig. 2 is a schematic structural view of the positioning and clamping assembly.
Fig. 3 is a schematic structural view of the quick-change gasket.
In the figure: i, a base assembly; II, positioning and clamping components; 1, a bottom plate; 2, positioning blocks at the end parts; 3, hanging ring screws; 4, positioning a supporting block; 5 limiting blocks; 6, laterally propping up the cylinder; 7, laterally propping up the block; 8, rotating a compacting cylinder; 9, vertically compacting blocks; 10 quick-change gaskets.
Detailed Description
The following detailed description of the invention is further illustrated in conjunction with the examples and the accompanying drawings, but is not intended to limit the invention.
The series of parts are airplane seat slide rails, the local characteristics and the lengths are slightly different, and two flange edges and the outer surfaces with different widths of the parts are milled by a numerical control machine tool.
As shown in fig. 1, according to the processing requirement, the automatic clamping device is provided with 5 groups of positioning and clamping assemblies II which are respectively fixed with a bottom plate 1 through bolts and a foot rest structure.
The automatic clamping device is hoisted to a machine tool workbench through a lifting screw 3 arranged on the bottom plate 1, positioned through a pin hole on the bottom plate 1 and then fixed with the machine tool workbench through a bolt. Selecting the number of cylinders for clamping according to the length of the workpiece; and setting the clamping force of the lateral jacking cylinder 6 and the rotary compacting cylinder 8 according to the process requirements of the part to be processed. Firstly, the wide flange is milled, so that the quick-change gaskets 10 on the positioning support blocks 4 and the limiting blocks 5 are pushed to the supporting position of the wide flange of the part along the guide grooves, and are sucked and fixed by strong magnets, and the preparation is completed.
The specific operation steps for realizing the automatic clamping of the seat slide rail of the airplane are as follows:
(1) Putting the workpiece into a tool, and enabling the end face of the part to be propped against the end positioning block 2;
(2) The rotary compression cylinder 8 drives the vertical compression block 9 to vertically compress, and corrects bending and tilting of the flange surface of the part, so that the inner surface of the flange of the workpiece is tightly attached to the support tables of the positioning support block 4 and the limiting block 5;
(3) The lateral propping cylinder 6 pushes out to drive the lateral propping block 7 to prop up the workpiece, and then the rotary compacting cylinder 8 is controlled to drive the vertical compacting block 9 to rotate and lift up;
(4) Starting a program to process a workpiece;
(5) After the machining is finished, the lateral jacking cylinder 6 is retracted, the lateral jacking block 7 is loosened, and the workpiece is taken out;
(6) Turning the workpiece, placing the workpiece into a fixture, machining a narrow flange, and withdrawing the quick-change gaskets 10 on the positioning support block 4 and the limiting block 5 from the workpiece support area to the edge position, and then, attracting and fixing the quick-change gaskets by a strong magnet; repeating the steps (1) - (5).
The clamping device provided by the invention realizes automatic clamping in the processing of the aircraft seat slide rail through flexible and modularized tooling design, has the characteristics of high automation degree, simplicity and convenience in operation and the like, and is specifically expressed in:
1) The labor intensity of workers is greatly reduced through the development and application of the flexible automatic clamp, the warping and distortion of the weak rigid profile parts are reduced, the clamping time is prolonged from 2 to 2.5 hours, the clamping time is prolonged by 3 to 7 minutes, and the clamping efficiency is improved by 27 times;
2) The straightness of the part can be automatically corrected through the force control function of the thrust cylinder, so that the phenomenon that workers repeatedly beat the gauge measuring-loosening/tightening wedge blocks and coordinate the work of the wedge blocks is avoided, and the deformation of the part is controlled within a tolerance range.
3) The modularized and quick-change gasket is designed, so that the clamping device has great flexibility and can cover clamping of more than 40 parts within 6 m.
Claims (3)
1. An automatic clamping device for processing an aircraft seat slide rail is characterized by comprising a base assembly (I) and a plurality of groups of positioning and clamping assemblies (II);
the base assembly (I) comprises a bottom plate (1) and an end positioning block (2); the bottom plate (1) is used for supporting the whole clamping device and is fixedly connected with the machine tool workbench; the end positioning block (2) is arranged at the end of the bottom plate (1) and used for positioning the end of the clamped aircraft seat slide rail;
the positioning and clamping assembly (II) comprises a positioning support block (4), a limiting block (5), a lateral jacking cylinder (6), a lateral jacking block (7), a rotary compression cylinder (8) and a vertical compression block (9); the positioning support block (4) is fixed on the bottom plate (1), a protruding support table is processed at the inner edge of the upper surface of the positioning support block, the inner side surface of the positioning support block (4) and the support table are respectively close to and attached to the web plate and the inner surface of the flange of the airplane seat slide rail to be processed, and the parts are positioned;
the limiting block (5) is positioned at the inner side of the positioning support block (4) and is used for limiting a workpiece; the edge of the upper surface of the side, which is close to the positioning support block (4), is processed with a protruding support table which is used for being close to and attached to the inner surface of the flange of the airplane seat slide rail to be processed;
the lateral jacking block (7) is of an integral structure with an L-shaped cross section formed by a vertical plate and a transverse plate, is connected with the limiting block (5) and is positioned below the limiting block (5), and meanwhile, the vertical plate of the lateral jacking block (7) is positioned between the positioning supporting block (4) and the inner side surface of the limiting block (5);
the lateral jacking cylinder (6) is fixedly arranged on the bottom plate (1), and a push-out rod of the lateral jacking cylinder (6) is connected with the lateral jacking block (7);
the web plate of the aircraft seat slide rail is arranged between the vertical plate of the lateral tightening block (7) and the inner side surface of the positioning support block (4), the flange of the aircraft seat slide rail is arranged on the support tables of the positioning support block (4) and the limiting block (5), and the lateral tightening block (7) is driven by the lateral tightening cylinder (6) to clamp or loosen the aircraft seat slide rail;
the rotary compression cylinder (8) is connected with the bottom plate (1) and is positioned at the outer side of the positioning support block (4); the tail end of a pressing plate at the top of the rotary pressing cylinder (8) is connected with a vertical pressing block (9), and the vertical pressing block (9) is positioned above a supporting table of the supporting block (4) and the limiting block (5) and used for pressing a workpiece in the vertical direction; the rotary lifting or pressing mechanism of the rotary pressing cylinder (8) can avoid interference between the clamping device and the cutter in the machining process.
2. The automatic clamping device for processing the aircraft seat slide rail according to claim 1, wherein the upper surfaces of the positioning support block (4) and the limiting block (5) are respectively provided with a guide groove and a strong magnet adsorption fixing position; the bottom surface of the quick-change gasket (10) is provided with a strong magnet and a sliding block mechanism, the quick-change gasket slides through guide grooves on the positioning support block (4) and the limiting block (5), and the quick-change gasket is adsorbed on the positioning support block (4) and the limiting block (5) at fixed positions.
3. An automatic clamping device for processing an aircraft seat slide rail according to claim 1 or 2, wherein the base assembly (i) further comprises suspension ring screws (3) which are arranged in the four corner areas of the bottom plate, so that the lifting is convenient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211169044.8A CN115446631B (en) | 2022-09-26 | 2022-09-26 | Automatic clamping device for machining airplane seat slide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211169044.8A CN115446631B (en) | 2022-09-26 | 2022-09-26 | Automatic clamping device for machining airplane seat slide rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115446631A CN115446631A (en) | 2022-12-09 |
| CN115446631B true CN115446631B (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211169044.8A Active CN115446631B (en) | 2022-09-26 | 2022-09-26 | Automatic clamping device for machining airplane seat slide rail |
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| Country | Link |
|---|---|
| CN (1) | CN115446631B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497230A (en) * | 2019-08-25 | 2019-11-26 | 大连理工大学 | The flexible clamping device and method of Continuous maching beam frame class integral structure component |
| CN211889096U (en) * | 2020-02-26 | 2020-11-10 | 安徽省佳艺休闲用品有限公司 | Batch drilling positioning device for machining leisure seats |
| CN113319613A (en) * | 2021-06-08 | 2021-08-31 | 南昌沪航工业有限公司 | Efficient machining method for large aircraft seat slide rail parts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364302B2 (en) * | 2000-07-14 | 2002-04-02 | Ultimate Standard Tooling International Llc | Modular system and fixture for positioning and clamping a workpiece |
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2022
- 2022-09-26 CN CN202211169044.8A patent/CN115446631B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497230A (en) * | 2019-08-25 | 2019-11-26 | 大连理工大学 | The flexible clamping device and method of Continuous maching beam frame class integral structure component |
| CN211889096U (en) * | 2020-02-26 | 2020-11-10 | 安徽省佳艺休闲用品有限公司 | Batch drilling positioning device for machining leisure seats |
| CN113319613A (en) * | 2021-06-08 | 2021-08-31 | 南昌沪航工业有限公司 | Efficient machining method for large aircraft seat slide rail parts |
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| Publication number | Publication date |
|---|---|
| CN115446631A (en) | 2022-12-09 |
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