阅读说明：本技术 一种密封件的加工方法 (A kind of processing method of sealing element ) 是由 李傲 余洋 张东升 张雪瑞 李盈 陈淳 于 2019-08-30 设计创作，主要内容包括：本发明公开的一种密封件的加工方法,将聚四氟乙烯板毛料是通过海绵双面胶带粘贴在金属辅材板上的,实现毛料与金属辅材板的良好贴合,将金属辅材和需切割的聚四氟乙烯板毛料通过粘贴的方式固定,在加工时保证了毛料与辅材贴合状况牢靠,在切割时,由于金属板材具有较高的强度,能够承受水流的冲击力,防止造成聚四氟乙烯板毛料变形,因此保证了毛料在加工过程中的精确定位,这样就保证了加工出高精度尺寸的零件。(A kind of processing method of sealing element disclosed by the invention, it by polyfluortetraethylene plate woollen is pasted on metal auxiliary material plate by sponge double faced adhesive tape, realize the good fit of woollen and metal auxiliary material plate, metal auxiliary material and the polyfluortetraethylene plate woollen that need to be cut are fixed by way of stickup, it is firm to ensure that woollen with auxiliary material is bonded situation in processing, in cutting, due to sheet metal intensity with higher, it is able to bear the impact force of water flow, it prevents that polyfluortetraethylene plate woollen is caused to deform, therefore it ensure that the accurate positioning of woollen in process, the part for processing high-precision size is ensured that in this way.)

1. a kind of processing method of sealing element, which is characterized in that include the following steps；

S1, the accessory plate (1) for choosing hard material preparation；

S2, the blank of flexible material sealing element is pre-processed；

S3, adhesive layer (2) are coated on the surface of accessory plate (1), and the blank of flexible material sealing element is bonded on adhesive layer；

S4, the machined parameters and processing program for determining high-pressure water jet processing；

S5, the blank of the flexible material sealing element after bonding and accessory plate (1) are mounted on the station of equipment, carry out high pressure Water jet machining；

After S6, work pieces process are complete, the flexible material sealing element processed is separated with accessory plate (1), obtains flexible material The sealing element of material.

2. the processing method of sealing element according to claim 1, which is characterized in that the area of accessory plate (1) is big in step S1 In or equal to flexible material blank to be processed area.

3. the processing method of sealing element according to claim 1, which is characterized in that the hard material is metal material.

4. the processing method of sealing element according to claim 1, which is characterized in that the accessory plate (1) is stainless steel plate, thick Degree is 1.5-2.5mm.

5. the processing method of sealing element according to claim 1, which is characterized in that in step S2, pretreatment is specially to soft The surface of property material is cleaned, the edge deburring to flexible material.

6. the processing method of sealing element according to claim 1, which is characterized in that in step S3, adhesive layer (2) is that sponge is double Any one in face adhesive tape, double-sided adhesive or adhesive.

7. the processing method of sealing element according to claim 6, which is characterized in that the adhesive layer is sponge double faced adhesive tape, Specific coating method is as follows:

The barrier paper of sponge double faced adhesive tape one side is torn, the upper surface of accessory plate (1) is pasted onto, then sponge double faced adhesive tape of tearing The barrier paper of another side, by the lower surface bonds of poly- flexible material in the top surface of sponge double faced adhesive tape.

8. the processing method of sealing element according to claim 5, which is characterized in that in step S4, according to the thickness of flexible material The thickness of degree and accessory plate (1), determines Water Cutting processing program and machined parameters.

9. the processing method of sealing element according to claim 5, which is characterized in that in step S5, accessory plate (1) and flexible material Expect that the installation method on lathe is specific as follows:

Flexible material is located to the top of accessory plate (1), flexible material and accessory plate (1) are then fitted in the operation in equipment On platform.

10. the processing method of sealing element according to claim 1, which is characterized in that the flexible material is that tetrafluoroethene is close.

Technical field

The present invention relates to the processing technique field of teflon seal, specially a kind of processing method of sealing element.

Background technique

A large amount of precision sealing part is often needed in Aeroengine Products, wherein teflon gasket accounting is more, Since polytetrafluoroethylene material intensity itself is poor, it is difficult to which fixed, material is flexible in process leads to part processing front and back ruler Very little to change greatly, machining accuracy grade is lower, and the model of polytetrafluoroethylene material part is more.

The processing method of traditional teflon gasket is pincers processing and mold processing；The part size shape of common pincers processing State consistency is poor, can not process the part of degree of precision size；Die processing method high production efficiency, the precision of workpiece It is high, suitable to produce in enormous quantities, but the disadvantage is that the mould design and manufacture period is long, tooling is costly, and often processing a part just needs A mold is wanted, causes new product development cycle long, at high cost, shape of product and size slight changes rear mold can not just make With, need to redesign replacement manufacture, extend the R&D cycle of product.

Utilize the water jet with very high energies and extremely strong penetration capacity to polytetrafluoro using high-pressure water jet processing method Ethylene woollen part carries out impact cutting.This processing technology is a kind of cool grinding technology, it have kerf quality it is good, it is efficient, The features such as environmentally friendly, cutting material in extensive range.Therefore, using high-pressure water jet processing small batch teflon gasket be compared with For a kind of reasonable economic processing method.

As shown in Figure 1, the fixed form of conventional high-tension water jet machining polyfluortetraethylene plate is to add auxiliary material up and down, pass through pressure Polyfluortetraethylene plate is fixed plate compression, but the shortcomings that such mode is polytetrafluoroethyl-ne within the scope of pressing plate compacted position B Alkene plate is bonded in order with auxiliary material, but is then bonded without platen region in poor shape, is also easy to produce deformed region C, Fig. 2 is pressing plate pressure The deformation schematic diagram of polyfluortetraethylene plate when tight.When part size is larger, whens cutting profile complex parts, is difficult to press by changing The conventional means such as tight position, adjustment machined parameters are improved, and cause the machining accuracy of part not high.

As shown in figure 3, another fixed form is fixed using bolt, at this moment drilled to install fixation Bolt, labor intensive, and part is not easy to assemble.When being fixed by bolts, in order to avoid work in-process cutter head and bolt collide, need Cutter head is raised into certain size, cutting ruler larger so as to cause the part incision cutting taper being cut into along cutting track D Very little precision is not high.As shown in figure 4, since material intensity itself is inadequate, the reasons such as material is flexible frequently result in actual processing Part position changes in processing, is deformed region C, leads to dimension overproof after cutting.

Summary of the invention

Aiming at the problem that using the processing polytetrafluoroethylregenerated material sealant of high-pressure water jet to be easily deformed in the prior art, this Invention provides a kind of processing method of sealing element, solves clamping fixation when polyfluortetraethylene plate is processed using high-pressure water jet and asks Topic, improves the precision of polyfluortetraethylene plate part.

The present invention is to be achieved through the following technical solutions:

A kind of processing method of sealing element, includes the following steps；

S1, the accessory plate 1 for choosing hard material preparation；

S2, the blank of flexible material sealing element is pre-processed；

S3, adhesive layer 2 is coated on the surface of accessory plate 1, and the blank of flexible material sealing element is bonded on adhesive layer；

S4, the machined parameters and processing program for determining high-pressure water jet processing；

S5, the blank of the flexible material sealing element after bonding and accessory plate 1 are mounted on the station of equipment, are carried out high Pressure water jet processing；

After S6, work pieces process are complete, the flexible material sealing element processed is separated with accessory plate 1, obtains flexibility The sealing element of material.

Preferably, in step 1 accessory plate 1 area be greater than or equal to flexible material blank to be processed area；

Preferably, the hard material is metal material.

Preferably, the accessory plate 1 is stainless steel plate, with a thickness of 1.5-2.5mm.

Preferably, in step S2, pretreatment is specially to clean to the surface of flexible material, to the edge of flexible material Deburring.

Preferably, in step S3, adhesive layer 2 is any one in sponge double faced adhesive tape, double-sided adhesive or adhesive

Preferably, the adhesive layer is sponge double faced adhesive tape, and specific coating method is as follows:

The barrier paper of sponge double faced adhesive tape one side is torn, the upper surface of accessory plate 1 is pasted onto, then sponge double-sided adhesive of tearing Barrier paper with another side, by the lower surface bonds of poly- flexible material in the top surface of sponge double faced adhesive tape.

Preferably, in step S4, according to the thickness of flexible material and the thickness of accessory plate 1, determine that Water Cutting processes journey Sequence and machined parameters.

Preferably, in step S5, the installation method of accessory plate 1 and flexible material on lathe is specific as follows:

Flexible material is located to the top of accessory plate 1, flexible material and accessory plate 1 are then fitted in the operation in equipment On platform；

Preferably, the flexible material is that tetrafluoroethene is close.

Compared with prior art, the invention has the following beneficial technical effects:

The blank of flexible material sealing element is pasted onto firmly by the processing method of sealing element provided by the invention by adhesive layer On the auxiliary material plate of matter, the blank of flexible material sealing element and the good fit of auxiliary material plate, by auxiliary material plate and the flexibility that need to be cut The blank of seal is fixed by way of stickup, in cutting, due to auxiliary material plate intensity with higher, is able to bear The impact force of water flow prevents the deformation for causing the blank of flexible material sealing element, therefore ensure that the hair of flexible material sealing element The accurate positioning of base in process, and then improve the precision of flexible material sealing element.

Further, choosing metal material is accessory plate, and metal has good rigidity, is able to bear biggish water impact It will not deform, the precision of sealing element can be effectively improved.

Further, cleaning and deburring are carried out to blank, prevents from being bonded insecure, cause blank to move in process Position causes part processing unqualified.

Further, adhesive layer selects sponge double faced adhesive tape, easy to operate, and it is convenient and low in cost to clear up.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the fixed polyfluortetraethylene plate of existing pressing plate；

Fig. 2 is the deformation schematic diagram of polyfluortetraethylene plate when pressing plate is fixed；

Fig. 3 is the existing structural schematic diagram for being fixed by bolts polyfluortetraethylene plate；

Fig. 4 is the deformation schematic diagram for being fixed by bolts polyfluortetraethylene plate；

Fig. 5 is the schematic diagram of the fixed polyfluortetraethylene plate of the method for the present invention.

In figure: 1, polyfluortetraethylene plate；2, adhesive layer；3, accessory plate；B, pressing plate compacted position；C, deformed region；D, it cuts Cut track.

Specific embodiment

Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit It is fixed.

Refering to Fig. 5, a kind of processing method of sealing element includes the following steps；

S1, accessory plate 1 is chosen, the area of accessory plate 1 is greater than the area of polyfluortetraethylene plate 2 to be processed；Accessory plate 1 is Hard material, for example, metal material, preferably stainless steel plate.

S2, polyfluortetraethylene plate 2 to be processed is pre-processed.

Specific pretreatment includes the surface of cleaning polyfluortetraethylene plate 2, carries out unhairing to the edge of polyfluortetraethylene plate 2 Thorn.

S3, adhesive layer is coated in the upper surface of accessory plate 1.

Adhesive layer is any one in sponge double faced adhesive tape, double-sided adhesive or adhesive, preferably sponge double faced adhesive tape.

The barrier paper of sponge double faced adhesive tape one side is torn, the upper surface of accessory plate 1 is pasted onto, then another side of tearing every From paper, the lower surface bonds of polyfluortetraethylene plate 2 are answered at the top surface of sponge double faced adhesive tape, stickup it is noted that by polytetrafluoroethyl-ne Alkene plate 2 pastes smooth, no warpage.

S4, establishment Water Cutting processing program: according to the thickness of the material thickness of part and auxiliary material, determine that Water Cutting processes journey Sequence and parameters；

Polyfluortetraethylene plate 2, is then pressed in equipment by S5, the top that polyfluortetraethylene plate 2 is located to accessory plate 1, Start to process the workpiece size of needs after finding positioning accurately；

After S6, work pieces process are complete, polyfluortetraethylene plate 2 and accessory plate 1 are unloaded, surface is carried out to it, due to water-jet It flows under dissection, a small amount of water flow can sputter the edge of adhesive layer, therefore will cause polyfluortetraethylene plate 2 and accessory plate 1 and have It is removed, and the surface tension of polyfluortetraethylene plate is small, it is possible to from removing place easily by polyfluortetraethylene plate part from auxiliary It helps on plate 1 and unloads.

Polyfluortetraethylene plate woollen is to be pasted by sponge double faced adhesive tape by the processing method of sealing element provided by the invention On metal auxiliary material plate, by metal auxiliary material plate, the good fit of woollen and metal auxiliary material plate is realized, by metal auxiliary material and need The polyfluortetraethylene plate woollen of cutting is fixed by way of stickup, ensure that woollen is bonded situation jail with auxiliary material in processing It leans on, in cutting, due to sheet metal intensity with higher, is able to bear the impact force of water flow, prevents from causing polytetrafluoroethyl-ne The deformation of alkene plate woollen, therefore ensure that the accurate positioning of woollen in process, it ensures that process high-precision ruler in this way Very little part.

Metal auxiliary material plate intensity and level requirements and polyfluortetraethylene plate type and shape etc. are further contemplated, it is excellent Select metal auxiliary material plate thickness in 1.5-2.5mm, outer dimension is greater than polyfluortetraethylene plate woollen size.

Processing method provided by the invention is compared to pincers processing method, and this method machining accuracy is higher, in 200mm size range Precision is can be controlled within 0.2mm.This method and processing efficiency are higher simultaneously, and process time is in 1~5min/ part.

Processing method provided by the invention compares mold punching process method, and cost is relatively low for this method, it is only necessary to certain auxiliary Material without manufacturing special tooling, and can effectively shorten lead time of part, and woollen and auxiliary material use sponge double faced adhesive tape It easily pastes, easy to clean will not influence material surface quality and performance.