CN105817914A - Auxiliary clamping method for NOMEX honeycomb numerical control machining - Google Patents
Auxiliary clamping method for NOMEX honeycomb numerical control machining Download PDFInfo
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- CN105817914A CN105817914A CN201610207142.4A CN201610207142A CN105817914A CN 105817914 A CN105817914 A CN 105817914A CN 201610207142 A CN201610207142 A CN 201610207142A CN 105817914 A CN105817914 A CN 105817914A
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- honeycomb
- nomex honeycomb
- nomex
- extra play
- auxiliary clamping
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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
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- Mechanical Engineering (AREA)
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Abstract
The invention provides an auxiliary clamping method for machining of an NOMEX honeycomb on a common numerical control milling machine. The auxiliary clamping method includes the following steps that the surface of a tool is cleaned, and an additional layer is laid and attached to a tool surface on which a release agent has been brushed, then an isolation layer is laid, and finally the NOMEX honeycomb is put on the isolation layer; curing is conducted in a hot pressure tank or a drying box according to curing parameters of a material selected and used in the additional layer; mold release of the honeycomb is conducted; and the NOMEX honeycomb is subjected to numerical control machining. By means of the auxiliary clamping method, the problem that an NOMEX honeycomb part is not firmly stuck or clamped and is unstuck during machining, and consequently the honeycomb part is defective is solved, meanwhile, the machining quality of the NOMEX honeycomb part is improved, and the rejection rate is reduced.
Description
Technical field
The present invention relates to the manufacture manufacture field of aviation composite part, particularly a kind of NOMEX honeycomb digital control processing clamping householder method.
Background technology
The cavity that NOMEX honeycomb has been widely used in aviation composite part is filled and sandwich strengthens, shape is to not uniform thickness, complication development, the most inapplicable traditional manual processing mode processing of a large amount of honeycomb parts, CNC milling machine must be used to be processed the structure of its complexity, but honeycomb is porous flexible structure, can not compress with pressing plate, can not directly with the method for vac sorb by honeycomb clamping on milling machine.
At present, it is generally the case that the processing of NOMEX honeycomb digital control milling generally uses two kinds of methods: i.e. Numerical-control Milling Machines processing and ultrasound wave CNC milling machine is processed:
1, Numerical-control Milling Machines processing method: use two-sided tape to be bonded in by NOMEX honeycomb woollen in milling machine platform or special milling frock, the method being compacted by evacuation or external force makes honeycomb woollen cling with platform or special milling frock, then utilizes the instruments such as honeycomb chopping milling cutter, section milling cutter, plug in milling cutter that NOMEX honeycomb woollen is carried out digital control processing.The method is big due to cutting strength, the phenomenon that NOMEX honeycomb disengages with milling machine platform or special milling frock easily occurs, cause honeycomb parts defect in the course of processing.
2, ultrasound wave CNC milling machine processing method: use two-sided tape to be bonded in by NOMEX honeycomb woollen in milling machine platform or special milling frock, the method being compacted by evacuation or external force makes honeycomb woollen cling with platform or special milling frock, then utilizes the instrument such as honeycomb slices milling cutter, cutting-up cutter that NOMEX honeycomb woollen is carried out numerical control supersonic cutting.The method is owing to have employed ultrasound wave cutting technique, and cutting strength is little, and work in-process does not haves the phenomenon that NOMEX honeycomb disengages with milling machine platform or special milling frock, and honeycomb crudy is high.Shortcoming is apparatus expensive, one ultrasound wave honeycomb CNC milling machine price that can place special milling tool is at about 2,700,000 Euros, far above the price with size Numerical-control Milling Machines, and this equipment can only process honeycomb parts, processing object is single, if fruit does not has enough honeycomb parts to process, the idleness of equipment can be caused.
The shortcoming of both Conventional processing methods is: when being 1. processed with two-sided tape bonding clamping NOMEX honeycomb on Numerical-control Milling Machines, honeycomb unsticking easily occurs, causes honeycomb parts defect.Can utilize man-hour two-sided tape that NOMEX honeycomb carries out bonding clamping though 2. adding in ultrasound wave honeycomb CNC milling machine, but equipment cost is expensive, and processing object is single, easily causes the idleness of equipment.
Summary of the invention
In order to solve during existing Numerical-control Milling Machines processing NOMEX honeycomb, the bonding clamping of honeycomb is insecure, unsticking, the problem causing honeycomb parts defect, the invention provides a kind of auxiliary clamping method that NOMEX honeycomb is processed on Numerical-control Milling Machines, comprise the following steps:
1) the frock surface of clamping NOMEX honeycomb is treated in cleaning, and brushes releasing agent on frock surface；
2) paste extra play, then one layer of sealing coat of paving on the upper berth, frock surface brushing releasing agent, on sealing coat, finally place NOMEX honeycomb；
3) anti-shrinkage shelves bar is placed in NOMEX honeycomb surrounding, then according to conventional method makes vacuum bag；
4) solidify in autoclave or baking oven according to the cure parameter of material selected by extra play；
5) the NOMEX honeycomb demoulding；
6) digital control processing NOMEX honeycomb, during milling, the surface of band extra play is down, and can not be milled through；
7) discharging, peels off sealing coat and extra play.
The invention has the beneficial effects as follows, the method using auxiliary extra play on the surface of NOMEX honeycomb, can solve that the NOMEX bonding clamping of honeycomb parts work in-process is insecure, unsticking, the problem causing honeycomb parts defect, improve NOMEX honeycomb parts crudy simultaneously, reduce percent defective.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings with embodiment to originally further illustrating.
Fig. 1 bottom surface is the auxiliary extra play paving schematic diagram of plane type NOMEX honeycomb.
Fig. 2 bottom surface is the auxiliary extra play paving schematic diagram of curved surface type NOMEX honeycomb.
1.NOMEX honeycomb in figure, 2. sealing coat, 3. extra play.
Detailed description of the invention
After outside certain type as a example by wing flap back segment wedge shape NOMEX honeycomb, this honeycomb parts two sides is hyperboloid and with sinking, and woollen is rectangle, and auxiliary clamping method comprises the following steps:
1) the frock surface of clamping NOMEX honeycomb (1) is treated in cleaning, and brushes releasing agent on frock surface；
2) paste extra play (3), then one layer of sealing coat (2) of paving on the upper berth, frock surface brushing releasing agent, on sealing coat, finally place NOMEX honeycomb (1)；
3) anti-shrinkage shelves bar is placed in NOMEX honeycomb (1) surrounding, then according to conventional method makes vacuum bag；
4) solidify in autoclave or baking oven according to the cure parameter of material selected by extra play (3)；
5) NOMEX honeycomb (1) demoulding；
6) digital control processing NOMEX honeycomb (1), during milling, the surface of band extra play is down, and can not be milled through；
7) discharging, peels off sealing coat (2) and extra play (3).
Its concrete manufacture process is as follows:
1) cleaning flat plate mold surface, and brush releasing agent
2) according to honeycomb parts woollen size to prepreg blanking.
3) according to shown in Fig. 1, in flat board frock, 2 layers of prepreg of paving are as extra play (3), the most again one layer of sealing coat (2) of paving, and place honeycomb woollen (1) on sealing coat.
4) after honeycomb woollen surrounding places anti-shrinkage blend stop, vacuum bag is made.
5) in autoclave, test plate (panel) is solidified according to the cure parameter of prepreg.
6) the honeycomb demoulding.
7) honeycomb vac sorb clamping on Digit Control Machine Tool vacuum platform, and require the surface of band extra play down.
8) digital control processing honeycomb upper surface (the first face) curved surface, the structure such as sink, require during milling that distance flat surface is higher than 0.5.
9) discharging, peels off extra play.
10) cleaning curve mold surface, and brush releasing agent.
11) according to honeycomb parts woollen size to prepreg blanking.
12) according to shown in Fig. 2, in curved surface frock, 2 layers of prepreg of paving are as extra play (3), paving one layer is as sealing coat (2) the most again, is placed on downwards on sealing coat by honeycomb woollen (1) curved surface of complete for milling first curved surface.
13) after honeycomb woollen surrounding places anti-shrinkage blend stop, vacuum bag is made.
14) in autoclave, test plate (panel) is solidified according to the cure parameter of prepreg.
15) the honeycomb demoulding.
16) curved surface vacuum milling tool is placed on CNC milling machine platform, honeycomb is placed on the upper vac sorb clamping of curved surface vacuum milling tool, and requires the surface of band extra play down.
17) digital control processing honeycomb upper surface (the second face) curved surface, the structure such as sink, require during milling that distance flat surface is higher than 0.5.
18) discharging, peels off extra play.
The most effectively solve that the NOMEX bonding clamping of honeycomb parts work in-process is insecure, unsticking, the problem causing honeycomb parts defect, improve NOMEX honeycomb parts crudy simultaneously, reduce percent defective.
Claims (1)
1. a NOMEX honeycomb digital control processing clamping householder method, comprises the following steps:
1) the frock surface of clamping NOMEX honeycomb is treated in cleaning, and brushes releasing agent on frock surface；
2) paste extra play, then one layer of sealing coat of paving on the upper berth, frock surface brushing releasing agent, on sealing coat, finally place NOMEX honeycomb；
3) anti-shrinkage shelves bar is placed in NOMEX honeycomb surrounding, then according to conventional method makes vacuum bag；
4) solidify in autoclave or baking oven according to the cure parameter of material selected by extra play；
5) the NOMEX honeycomb demoulding；
6) digital control processing NOMEX honeycomb, during milling, the surface of band extra play is down, and can not be milled through；
7) discharging, peels off sealing coat and extra play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207142.4A CN105817914A (en) | 2016-04-01 | 2016-04-01 | Auxiliary clamping method for NOMEX honeycomb numerical control machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207142.4A CN105817914A (en) | 2016-04-01 | 2016-04-01 | Auxiliary clamping method for NOMEX honeycomb numerical control machining |
Publications (1)
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| CN105817914A true CN105817914A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610207142.4A Pending CN105817914A (en) | 2016-04-01 | 2016-04-01 | Auxiliary clamping method for NOMEX honeycomb numerical control machining |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297163A (en) * | 2018-04-03 | 2018-07-20 | 东华大学 | A kind of low cost honeycomb curved-surface processing method |
| CN108527889A (en) * | 2018-04-03 | 2018-09-14 | 东华大学 | A kind of honeycomb curved surface high-efficiency machining method |
| CN111421358A (en) * | 2020-05-22 | 2020-07-17 | 西安飞机工业（集团）有限责任公司 | Ultrasonic numerical control milling positioning method for aramid paper honeycomb core |
| CN113927995A (en) * | 2021-10-15 | 2022-01-14 | 上海朗旦复合材料科技有限公司 | Honeycomb sandwich plate processing and leveling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297163A (en) * | 2018-04-03 | 2018-07-20 | 东华大学 | A kind of low cost honeycomb curved-surface processing method |
| CN108527889A (en) * | 2018-04-03 | 2018-09-14 | 东华大学 | A kind of honeycomb curved surface high-efficiency machining method |
| CN111421358A (en) * | 2020-05-22 | 2020-07-17 | 西安飞机工业（集团）有限责任公司 | Ultrasonic numerical control milling positioning method for aramid paper honeycomb core |
| CN113927995A (en) * | 2021-10-15 | 2022-01-14 | 上海朗旦复合材料科技有限公司 | Honeycomb sandwich plate processing and leveling method |
| CN113927995B (en) * | 2021-10-15 | 2024-05-28 | 上海朗旦复合材料科技有限公司 | Honeycomb sandwich plate processing and leveling method |
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Application publication date: 20160803 |