CN102615520A - Composite material thin-walled piece clamp and method for processing composite material by using clamp - Google Patents
Composite material thin-walled piece clamp and method for processing composite material by using clamp Download PDFInfo
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- CN102615520A CN102615520A CN2012100892885A CN201210089288A CN102615520A CN 102615520 A CN102615520 A CN 102615520A CN 2012100892885 A CN2012100892885 A CN 2012100892885A CN 201210089288 A CN201210089288 A CN 201210089288A CN 102615520 A CN102615520 A CN 102615520A
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- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 229920003023 plastic Polymers 0.000 claims abstract description 38
- 239000004033 plastic Substances 0.000 claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000003754 machining Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims description 17
- 238000003801 milling Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 101150038956 cup-4 gene Proteins 0.000 description 6
- 238000005213 imbibition Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003863 physical function Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
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Abstract
The invention provides a composite material thin-walled piece clamp and a method for processing a composite material by using the clamp. The composite material thin-walled piece clamp comprises a clamp body, a vacuum sucking disk, a vacuum duct, a positioning mechanism and a liquid plastic tensioning mechanism, wherein the vacuum sucking disk is used for fixedly holding a workpiece, and is arranged on the side face of the clamp body; the vacuum duct is formed inside the clamp body; one end of the vacuum duct is connected with the vacuum sucking disk, and the other end of the vacuum duct is connected with a vacuum generator; the positioning mechanism is used for limiting the movement and the rotation of the workpiece, and is arranged on the side face of the clamp body; and the hydraulic plastic tensioning mechanism is used for supporting the workpiece and ensuring needed tension force output, and is arranged on the side face of the clamp body. Due to the adoption of the composite material thin-walled piece clamp and the method, the problems of insufficient rigidity and vibration in a workpiece machining process can be solved, the workpiece is prevented from deforming, the processing precision is increased, and the surface quality is improved.
Description
Technical field
The present invention relates to composite precision cutting processing technique field, the method that relates in particular to a kind of vacuum imbibition anchor clamps and use these anchor clamps processing work under condition of high speed milling.
Background technology
Composite has that density is little, strength and stiffness are high, heatproof, wear-resisting, characteristics such as fatigue resistance good, damping capacity good, anti-ablation, radioresistance, transducing and other physical functions; Whereby, composite is widely used in fields such as building, communications and transportation, chemical industry, boats and ships, Aero-Space and universal machines.
Composite is a kind of typical difficult-to-machine material, and its bad machining property has caused high processing charges, and working (machining) efficiency is low to make its commercialized degree fail to reach people's desired value far away, therefore needs the high-efficiency machining method of research composite badly.High-speed milling is a kind of important means of composite processing, and the precision optical machinery processing request that it can better satisfy complexity Noodles composite material parts has higher crudy and working (machining) efficiency.High-speed milling can keep splendid surface geometry precision, can guarantee the surface of good roughness again, and does not exist because the instrument decrease of hardness that cutting temperature rises and causes can prolong life tools significantly, has characteristics rapidly and efficiently simultaneously again.
Thin wall component because of its compact conformation, in light weight, consumptive material is few, cost is low etc., and characteristics are widely used.But because poor rigidity, the weak strength of thin-walled parts; In the high-speed milling process; By the distortion that the effect of clamp power and Milling Force load very easily produces machining deformation, part morpheme error is increased, influence the surface precision of workpiece and be difficult for the crudy of assurance part.Secondly, vibration problem directly influences the surface roughness of workpiece.And the diversity of composite has determined it to have diversified mechanical behavior characteristic, and its processing technology, machining condition and clamping method (holding method) have different with traditional metal material more.But the location and the clamping device of the composite material thin wall spare of present non-structure advantages of simple still, enforcement economy are to improve the machining accuracy and the surface quality of thin-walled parts.
Summary of the invention
The object of the present invention is to provide a kind of composite material thin wall spare anchor clamps and use the method for this anchor clamps machining composite material,, improve machining accuracy and surface quality to solve the not enough problem with vibration of rigidity in the thin-wall part process.
In order to realize the object of the invention, composite material thin wall spare anchor clamps provided by the invention comprise chuck body; Vacuum cup is used for the fixing workpiece, and is located at the end face of said chuck body; The vacuum duct, it is inner to be located at said chuck body, and an end links to each other with said vacuum cup, and the other end is used for being connected with vacuum generator; Detent mechanism is used to limit workpiece and moves and rotate, and is located at the side of said chuck body; The liquid plastics tension mechanism is used for supporting workpiece and guarantees required expanding force output, and the output block of said liquid plastics tension mechanism is located at the side of said chuck body.
In order to realize the object of the invention, the method for the above-mentioned composite material thin wall spare anchor clamps of use provided by the invention machining composite material may further comprise the steps: step 1, set up the three-dimensional CAD physical model of workpiece; The planning cutter path generates the CAM program, machining simulation process, and sophisticated model; Step 2, in main stressed and deformed region, confirm the position of the crucial anchor point of workpiece, and optimize distribution, installing and locating mechanism on two walls of anchor clamps, fixation workpiece position; Step 3, according to the composite type of workpiece, estimate total cutting force size, confirm structure, the form of vacuum cup, confirm the mounting means of vacuum size and vacuum cup; Step 4, workpiece is installed on the anchor clamps, to the workpiece location, vacuum sucks; Two walls of liquid plastics tension mechanism top tight workpiece, fast detecting and diagnosis clamp and the tensioner process is confirmed; The processing beginning, the process of clamped condition and monitoring of tensioner abnormal state and processing is until process finishing.
The present invention is used for the high-speed milling fine finishining stage of composite material work piece complex profile; Can guarantee that clamp force distribution is even; Solve rigidity deficiency and the problem of vibrating in the workpiece process, thereby avoid workpiece to clamp distortion, raising machining accuracy and surface quality.
Description of drawings
Fig. 1 is the plan structure sketch map of the preferred embodiment of composite material thin wall spare anchor clamps of the present invention;
Fig. 2 is the sectional structure sketch map of the liquid plastics tension mechanism of preferred embodiment shown in Figure 1.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is explained further details.
Fig. 1 and Fig. 2 schematically show the structure of the preferred embodiment of composite material thin wall spare anchor clamps of the present invention, and be as shown in the figure, and this preferred embodiment comprises chuck body 1, vacuum cup 4, vacuum duct 5, detent mechanism and liquid plastics tension mechanism 11.The bottom surface of chuck body 1 is provided with the locating surface 2 that is used to locate workpiece, and the end face 3 of chuck body 1 is provided with vacuum cup 4.Chuck body 1 inside is provided with vacuum duct 5, and vacuum duct 5 one ends link to each other with vacuum cup 4, and the other end is connected with the vacuum generator that is arranged at chuck body 1 outside, and vacuum generator is connected in air supply system.In this preferred embodiment, chuck body 1 is cube structure, and its wall is installed the thin-walled part 9,10 of two detent mechanisms and two liquid plastics liquid plastics tension mechanisms respectively, and detent mechanism comprises locating piece piece 6,7,8.During application, can pass through locating piece 6, locating piece 7 and locating piece 8 fixation workpiece positions, restriction workpiece X, the Y direction moves and the rotation of Z direction.Liquid plastics liquid plastics tension mechanism 11 can be delivered to pressure on thin-walled part 9 and the thin-walled part 10 equably, makes thin-walled part 9,10 expand outwardly the generation strain, guarantees required expanding force output in the time of supporting workpiece.
The liquid plastics tension mechanism 11 of this preferred embodiment is as shown in Figure 2, liquid plastics tension mechanism 11 comprise the head butt of the pinching screw 14, an end and the pinching screw 14 that are used to receive external motivating force traveller 13, be full of liquid plastics liquid plastics chamber 12, be used for transmitting the thin-walled part 9 or 10 of expanding force to workpiece.During application, drive pinching screw 14 and rotate, traveller 13 is moved, traveller 13 stresses on the liquid plastics, and this pressure is delivered on the thin-walled part 9,10 equably, makes thin-walled part 9,10 produce strain, guarantees required expanding force output in the time of supporting workpiece.After unclamping pinching screw 14, thin-walled part 9,10 can unclamp workpiece also and can take off workpiece because of flexible reinstatement.
For better application preferred embodiment shown in Figure 1, the present invention also provides a kind of method of using the processing thin-walled workpiece of above-mentioned vacuum imbibition anchor clamps, may further comprise the steps:
Modeling and analysis: three-dimensional CAD (Computer Aided Design, the CAD) physical model of setting up workpiece; The planning cutter path generates CAM (computer Aided Manufacturing, computer-aided manufacturing) program, machining simulation process, and sophisticated model; Extract the processing profile, carry out the stressed finite element analysis with distortion of workpiece in the high-speed milling process, improve once more and revise model according to cutter path.
Workpiece location:, in main stressed and deformed region, confirm the position of the crucial anchor point of workpiece, and optimize distribution, installing and locating piece on two walls of clamp body, fixation workpiece position according to The results.
Vacuum cup 4 is set: according to the composite type of workpiece to be machined, estimate total cutting force size, confirm structure, the form of vacuum cup 4, confirm the mounting means of vacuum size and vacuum cup 4.
Liquid plastics is set: liquid plastics liquid plastics tension mechanism 11 is according to principle design from thin-wall metal strain to all directions that transmit equalization pressure and.Liquid plastics can not spill from traveller hole and thread gaps under the high pressure, has Incoercibility and certain fluidity, and the liquid plastics that when 150 ℃ of left and right sides, will melt into liquid condition is cast in the closed conduit of chuck body (liquid plastics chamber).
Supplemental support: when rotating pinching screw 14; Make traveller 13 begin to move, traveller 13 stresses on the liquid plastics, and this pressure will be delivered on the thin-walled part 9,10 equably; Make thin-walled part 9,10 produce strain, guarantee required expanding force output in the time of supporting workpiece.When unclamping pinching screw 14, thin-walled part 9,10 leans on the elastic return original state, and workpiece unclamps.
Processing: workpiece is installed on the preferred embodiment shown in Figure 1, and to the workpiece location, vacuum sucks through manual; Make traveller 13 stress on liquid plastics through rotating pinching screw 14 again; Two walls of liquid plastics tension mechanism 11 top tight workpieces, fast detecting and diagnosis clamp and the tensioner process is confirmed; The processing beginning, the process of clamped condition and monitoring of tensioner abnormal state and processing is until process finishing.
The present invention is used for the high-speed milling fine finishining of thin-wall workpiece complex profile during the stage, and one one mould can guarantee that clamp force distribution is even; Avoid clamping distortion; Solve rigidity deficiency and vibration problem in the workpiece process, improve machining accuracy and surface quality, reduce the distortion of workpiece in process; Reduce vibration, thereby improve surface precision and surface roughness after the processing.The raising of vacuum imbibition anchor clamps installed surface rigidity makes the rigidity of manufacturing process system be improved, behind process parameter optimizing; Can adopt higher cutting speed; Reduce the cutting region temperature, thereby further improve working (machining) efficiency and tool life, cut down finished cost.
Can know that by technological general knowledge the present invention can realize through other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All within the scope of the present invention or the change in being equal to scope of the present invention all comprised by the present invention.
Claims (6)
1. composite material thin wall spare anchor clamps comprise chuck body, it is characterized in that, also comprise:
Vacuum cup is used for the fixing workpiece, and is located at the end face of said chuck body;
The vacuum duct, it is inner to be located at said chuck body, and an end links to each other with said vacuum cup, and the other end is used for being connected with vacuum generator;
Detent mechanism is used to limit workpiece and moves and rotate, and is located at the side of said chuck body;
The liquid plastics tension mechanism is used for supporting workpiece and guarantees required expanding force output, and the output block of said liquid plastics tension mechanism is located at the side of said chuck body.
2. composite material thin wall spare anchor clamps according to claim 1 is characterized in that, said detent mechanism is a locating piece.
3. composite material thin wall spare anchor clamps according to claim 1 is characterized in that, said liquid plastics tension mechanism comprises:
Pinching screw is used to receive external motivating force;
Traveller, the head butt of an end and said pinching screw;
The liquid plastics chamber, said liquid plastics is full of liquid plastics in the chamber, and the other end of said traveller is connected in said liquid plastics chamber to transmit pressure to said liquid plastics;
Thin-walled part is located on the said liquid plastics chamber, is used for transmitting expanding force to workpiece.
4. a method of using the arbitrary described composite material thin wall spare anchor clamps machining composite material of claim 1-3 is characterized in that, may further comprise the steps:
Step 1, set up the three-dimensional CAD physical model of workpiece; The planning cutter path generates the CAM program, machining simulation process, and sophisticated model;
Step 2, in main stressed and deformed region, confirm the position of the crucial anchor point of workpiece, and optimize distribution, installing and locating mechanism on two walls of anchor clamps, fixation workpiece position;
Step 3, according to the composite type of workpiece, estimate total cutting force size, confirm structure, the form of vacuum cup, confirm the mounting means of vacuum size and vacuum cup;
Step 4, workpiece is installed on the anchor clamps, to the workpiece location, vacuum sucks; Two walls of liquid plastics tension mechanism top tight workpiece, fast detecting and diagnosis clamp and the tensioner process is confirmed; The processing beginning, the process of clamped condition and monitoring of tensioner abnormal state and processing is until process finishing.
5. method according to claim 4 is characterized in that, in step 1, also comprises and extracts the processing profile after the sophisticated model, and carry out the stressed finite element analysis with distortion of workpiece in the high-speed milling process according to cutter path, improves once more and revises model.
6. method according to claim 4 is characterized in that, and is between step 3 and step 4, further comprising the steps of:
The liquid plastics that when 150 ℃ of left and right sides, will melt into liquid condition is cast in the liquid plastics chamber;
Rotate pinching screw, make traveller begin to move, traveller stresses on the liquid plastics, and pressure is delivered on the thin-walled part equably, makes thin-walled part produce strain, guarantees required expanding force output in the time of supporting workpiece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100892885A CN102615520A (en) | 2012-03-30 | 2012-03-30 | Composite material thin-walled piece clamp and method for processing composite material by using clamp |
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| CN2012100892885A CN102615520A (en) | 2012-03-30 | 2012-03-30 | Composite material thin-walled piece clamp and method for processing composite material by using clamp |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896547A (en) * | 2012-09-21 | 2013-01-30 | 常州市立威刀具有限公司 | Adsorbing type feeding and discharging device |
| CN104111625A (en) * | 2014-08-22 | 2014-10-22 | 南京航空航天大学 | Active machining method for clamping deformation of thin-walled special-shaped workpieces |
| CN104841989A (en) * | 2015-05-05 | 2015-08-19 | 柳州三农科技有限公司 | Machining method of H-shaped thin-wall parts |
| CN104841991A (en) * | 2015-05-05 | 2015-08-19 | 柳州三农科技有限公司 | Machining method of H-shaped thin-wall parts |
| CN111941312A (en) * | 2020-07-31 | 2020-11-17 | 南京航空航天大学 | A fixture for processing thin-walled parts based on adaptive support of phase change materials |
| CN112059670A (en) * | 2020-09-10 | 2020-12-11 | 重庆市一可金属制品有限公司 | Process for machining metal thin-wall part by machining center |
| CN113182565A (en) * | 2021-03-30 | 2021-07-30 | 成都飞机工业（集团）有限责任公司 | Weak-rigidity molded surface regional milling method |
| CN113199068A (en) * | 2021-03-31 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Machining method for sharp corner structure of glass fiber reinforced plastic part |
| CN116000354A (en) * | 2023-02-27 | 2023-04-25 | 江苏永铭汇门窗科技有限公司 | Milling machine structure for processing aluminum profile doors and windows |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896547A (en) * | 2012-09-21 | 2013-01-30 | 常州市立威刀具有限公司 | Adsorbing type feeding and discharging device |
| CN104111625A (en) * | 2014-08-22 | 2014-10-22 | 南京航空航天大学 | Active machining method for clamping deformation of thin-walled special-shaped workpieces |
| CN104841989A (en) * | 2015-05-05 | 2015-08-19 | 柳州三农科技有限公司 | Machining method of H-shaped thin-wall parts |
| CN104841991A (en) * | 2015-05-05 | 2015-08-19 | 柳州三农科技有限公司 | Machining method of H-shaped thin-wall parts |
| CN111941312A (en) * | 2020-07-31 | 2020-11-17 | 南京航空航天大学 | A fixture for processing thin-walled parts based on adaptive support of phase change materials |
| CN111941312B (en) * | 2020-07-31 | 2021-09-07 | 南京航空航天大学 | A fixture for processing thin-walled parts based on adaptive support of phase change materials |
| CN112059670A (en) * | 2020-09-10 | 2020-12-11 | 重庆市一可金属制品有限公司 | Process for machining metal thin-wall part by machining center |
| CN113182565A (en) * | 2021-03-30 | 2021-07-30 | 成都飞机工业（集团）有限责任公司 | Weak-rigidity molded surface regional milling method |
| CN113199068A (en) * | 2021-03-31 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Machining method for sharp corner structure of glass fiber reinforced plastic part |
| CN116000354A (en) * | 2023-02-27 | 2023-04-25 | 江苏永铭汇门窗科技有限公司 | Milling machine structure for processing aluminum profile doors and windows |
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Application publication date: 20120801 |