阅读说明：本技术 一种并联膜盘联轴器的加工方法 (Processing method of parallel membrane disc coupler ) 是由 周闯 崔建民 李利军 史前凯 赵鹏飞 于 2020-10-15 设计创作，主要内容包括：本发明提供了一种并联膜盘联轴器的加工方法,选用特殊结构刀具,加厚悬伸部分的厚度,加强刀具刚性,在零件最终圆孔部位预加工螺纹孔,通过螺纹孔与零件进行装夹,且由于结构的特殊性,在零件上下两个端面均安排螺钉旋紧,保证零件加工刚性,在零件悬伸过长的深腔内填充泡沫,吸收零件加工振动,制造随形填充块,支撑零件加工,减少零件变形。控制上刀量以及加工进给,解决零件变形大的问题。加工方式主要缺点：螺钉装夹耗费时间较多,需要有专门的扳手进行零件装夹与拆卸。本发明的优点：解决了深腔加工易振刀的难题,并为薄壁结构件加工提供了加工参考,满足设计要求,对新一代发动机制造技术水平的提升具有深远意义。(The invention provides a processing method of a parallel membrane disc coupling, which selects a special structure cutter, thickens the thickness of an overhanging part, strengthens the rigidity of the cutter, pre-processes a threaded hole at the final round hole part of a part, clamps the part through the threaded hole, arranges screws on the upper end surface and the lower end surface of the part for screwing because of the structural particularity, ensures the processing rigidity of the part, fills foam in a deep cavity of the overlong overhanging part of the part, absorbs the processing vibration of the part, manufactures a conformal filling block, supports the processing of the part and reduces the deformation of the part. The cutter feeding amount and the machining feeding are controlled, and the problem of large part deformation is solved. The main disadvantages of the processing mode are as follows: the screw clamping consumes more time, and a special wrench is needed for clamping and disassembling parts. The invention has the advantages that: the problem that the tool is easy to vibrate in deep cavity machining is solved, machining reference is provided for machining of thin-wall structural parts, design requirements are met, and the tool has profound significance for improving the manufacturing technical level of a new-generation engine.)

1. A processing method of a parallel membrane disc coupler is characterized in that: the parallel membrane disc coupling consists of two membrane discs and a central shaft, the membrane discs are small in axial thickness and extend in a radial suspension manner, a deep cavity with the height of about 70mm is formed between the two parallel membrane discs, the length of the deep cavity exceeds 130mm, and a traditional cutter and a clamping scheme are difficult to machine, so that a new machining mode is created for machining; in the processing method of the parallel membrane disc coupling, the design of a cutter is as follows: the length of the cutter meets the condition that half of the cutter enters a deep cavity of a part to be machined, and the other half of the cutter is used for clamping a machine tool, so that enough cutter rigidity is obtained, the cutter is not vibrated in the machining process, and the limitation of the machining stroke caused by the overlong cutter is avoided; the numerical control processing cutter, lathe cooperation are 32mm, increase the thickness of overhanging part.

2. The method for processing the parallel membrane disc coupling according to claim 1, wherein: still include the clamping mode: the method comprises the steps of processing between two film discs of a parallel film disc coupler, screwing the two film discs through holes in a clamp and threaded holes of parts by screws to enable the parts to be tightly attached to the matching surface of the clamp, adding a supporting shaft at the center of the clamp, placing a gland on the supporting shaft to press the film disc at the other side of the parts, screwing the through holes of the gland and the threaded holes of the parts by the screws, forming a rigid support between the outer sides of the two film discs of the parts and the parts, and enhancing the processing rigidity.

3. The method for processing the parallel membrane disc coupling according to claim 1, wherein: further comprising the matching of processing parameters: the two film discs are consistent in thickness and are of thin-wall structures, cutting sharpness is guaranteed during machining, due to the fact that parts are in suspension extension, a constant linear speed mode is selected for programming, machining feeding is not more than 0.16mm, feeding is reduced in a local switching circular arc, the cutting depth of each feeding is not more than 0.2mm, the sharpness of a cutter is guaranteed, and the surface machining quality of the parts is guaranteed.

Technical Field

The invention relates to the field of processing, in particular to a processing method of a parallel membrane disc coupling

Background

The difference between the tool selected for traditional part processing and the clamp is not great, the tool is too long, vibration is very easy to occur in the processing, and the surface state of the part is influenced; the machining mode of radial positioning and axial pressing is usually selected during machining, and the traditional machining mode is not suitable for the special structural part of the parallel grinding disc coupling.

Disclosure of Invention

The invention aims to overcome the problems and particularly provides a method for processing a parallel membrane disc coupling.

The invention provides a method for processing a parallel membrane disc coupler, which is characterized by comprising the following steps of: the parallel membrane disc coupler consists of two membrane discs and a central shaft, the membrane discs are small in axial thickness and long in radial overhang, a deep cavity with the height of about 70mm is formed between the two parallel membrane discs, the length of the deep cavity exceeds 130mm, and a traditional cutter and a clamping scheme are difficult to machine, so that a new machining mode is created for machining; in the processing method of the parallel membrane disc coupling, the design of a cutter is as follows: the length of the cutter meets the condition that one half of the cutter enters a deep cavity of a part to be machined and the other half of the cutter is used for clamping a machine tool, so that enough cutter rigidity is obtained, the cutter is not vibrated in the machining process, and the limitation of the machining stroke caused by the overlong cutter is avoided; the numerical control processing cutter, lathe cooperation are 32mm, increase the thickness of overhanging part.

Still include the clamping mode: processing between two membrane dishes of parallelly connected membrane dish shaft coupling, screwing through the through-hole on the anchor clamps and the screw hole of part with the screw, making the part hug closely anchor clamps cooperation surface, increase the back shaft in anchor clamps center department, place a gland on the back shaft and press the opposite side membrane dish at the part, use the screw to screw through the through-hole of gland and the screw hole of part, two membrane dish outsides of part and part itself form a rigid support, and the processing rigidity is strengthened.

Further comprising the matching of processing parameters: two membrane dishes thickness are unanimous, all are thin-walled structure, guarantee during the processing that the cutting is sharp, because the part hangs the extension, the mode of constant linear velocity is selected for use in the programming, and the processing is fed and is not more than 0.16mm to reduce at local switching circular arc and feed, the feed cutting depth is not more than 0.2mm at every turn, guarantees the sharpness of cutter, thereby guarantees part surface machining quality.

Is characterized in that: firstly, a special structure cutter is selected, the thickness of the overhanging part is thickened, the rigidity of the cutter is enhanced, and the thickness of the cutting part is enhanced by a common turning tool. And secondly, preprocessing a threaded hole at the final round hole part of the part, clamping the part through the threaded hole, and arranging screws on the upper end surface and the lower end surface of the part due to the structural particularity to ensure the processing rigidity of the part, filling foam in a deep cavity of the part with a long suspension extension length, absorbing the processing vibration of the part, manufacturing a shape-following filling block, supporting the processing of the part and reducing the deformation of the part. And thirdly, controlling the amount of the upper cutter and the machining feed, and machining according to the tested machining parameters to solve the problem of large part deformation. The main disadvantages of the processing mode are as follows: the screw clamping consumes more time, and a special wrench is needed for clamping and disassembling parts.

The invention has the advantages that:

the processing method of the parallel membrane disc coupling breaks through the technical bottleneck of the parallel membrane disc coupling processing, ensures the smooth development and production of the whole machine, and accumulates experience for the processing of parts with similar structures. The processing technology of similar structural parts has not been provided in the prior part processing, and the processing technology of the parallel membrane disc coupling is satisfied. The problem that the tool is easy to vibrate in deep cavity machining is solved, machining reference is provided for machining of thin-wall structural parts, design requirements are met, and the tool has profound significance for improving the manufacturing technical level of a new-generation engine.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a schematic diagram of a parallel membrane disc coupling according to an embodiment of the present invention;

FIG. 2 is a three-dimensional schematic view of a deep cavity numerically controlled machining tool in accordance with an embodiment of the present invention;

FIG. 3 is a two-dimensional view of a deep cavity engine lathe tool according to an embodiment of the present invention;

FIG. 4 is a diagram of a turning diaphragm disc coupling deep cavity fixture;

FIG. 5 is a view of the outer side fixture of the membrane disc being turned;

FIG. 6 is a structural diagram of a milling film disc unloading groove clamp;

in the figure, 1 part, 2 upper gland, 3 central tightening nut, 4 upper tightening bolt, 5 lower tightening bolt, 6 clamp base bodies, 7 pressing plates, 8 auxiliary supports, 9 parts, 10 upper tightening bolts, 11 lower tightening bolts, 12 clamp base bodies, 13 clamp base bodies, 14 auxiliary supports, 15 parts, 16 central tightening bolts, 17 upper gland and 18 tightening bolts.

Detailed Description

Example 1

The invention provides a method for processing a parallel membrane disc coupler, which is characterized by comprising the following steps of: the parallel membrane disc coupler consists of two membrane discs and a central shaft, the membrane discs are small in axial thickness and long in radial overhang, a deep cavity with the height of about 70mm is formed between the two parallel membrane discs, the length of the deep cavity exceeds 130mm, and a traditional cutter and a clamping scheme are difficult to machine, so that a new machining mode is created for machining; in the processing method of the parallel membrane disc coupling, the design of a cutter is as follows: the length of the cutter meets the condition that one half of the cutter enters a deep cavity of a part to be machined and the other half of the cutter is used for clamping a machine tool, so that enough cutter rigidity is obtained, the cutter is not vibrated in the machining process, and the limitation of the machining stroke caused by the overlong cutter is avoided; the numerical control processing cutter, lathe cooperation are 32mm, increase the thickness of overhanging part.

Still include the clamping mode: processing between two membrane dishes of parallelly connected membrane dish shaft coupling, screwing through the through-hole on the anchor clamps and the screw hole of part with the screw, making the part hug closely anchor clamps cooperation surface, increase the back shaft in anchor clamps center department, place a gland on the back shaft and press the opposite side membrane dish at the part, use the screw to screw through the through-hole of gland and the screw hole of part, two membrane dish outsides of part and part itself form a rigid support, and the processing rigidity is strengthened.

Further comprising the matching of processing parameters: two membrane dishes thickness are unanimous, all are thin-walled structure, guarantee during the processing that the cutting is sharp, because the part hangs the extension, the mode of constant linear velocity is selected for use in the programming, and the processing is fed and is not more than 0.16mm to reduce at local switching circular arc and feed, the feed cutting depth is not more than 0.2mm at every turn, guarantees the sharpness of cutter, thereby guarantees part surface machining quality.

Is characterized in that: firstly, a special structure cutter is selected, the thickness of the overhanging part is thickened, the rigidity of the cutter is enhanced, and the thickness of the cutting part is enhanced by a common turning tool. And secondly, preprocessing a threaded hole at the final round hole part of the part, clamping the part through the threaded hole, and arranging screws on the upper end surface and the lower end surface of the part due to the structural particularity to ensure the processing rigidity of the part, filling foam in a deep cavity of the part with a long suspension extension length, absorbing the processing vibration of the part, manufacturing a shape-following filling block, supporting the processing of the part and reducing the deformation of the part. And thirdly, controlling the amount of the upper cutter and the machining feed, and machining according to the tested machining parameters to solve the problem of large part deformation. The main disadvantages of the processing mode are as follows: the screw clamping consumes more time, and a special wrench is needed for clamping and disassembling parts.

Example 2

The turning mode of the parallel membrane disc coupler is explained from four aspects of part structure, tool selection, clamp design and parameter selection.

The part structure is shown in figure 1, the wall thickness of the membrane disc of the parallel membrane disc coupling is 1.84mm, the overhang is 145.5mm, the parallel membrane disc coupling is a typical thin-wall structure, and a deep cavity with the depth of 145.5mm and the width of 73mm is formed in the middle of the parallel membrane disc.

The whole processing scheme of the part is as follows: processing threaded hole → processing membrane disc deep cavity → processing membrane disc outer side molded surface → processing round hole

The tool selection mainly starts from reducing vibration tools, and the tool shown in the attached figure 4 is selected when the common lathe is used for machining. Length 300mm satisfies deep chamber processing length demand, but the cutter overhang overlength will lead to the cutter rigidity not enough, and the easy sword that shakes of processing, so cutter thickness design is 50mm, and cutter cutting part thickness thickening also is for strengthening the cutter rigidity. The machining parameters are selected to be 15r/min, and the cutting depth is 2mm each time.

When the numerical control cutter is selected, the cutter shown in the attached figure 2 is selected. The length is still 300mm, and the thickness of the tool and the machine tool matched with the tool is required to be 32mm due to the limitation of the matched part of the machine tool, so that the thickness of the overhanging part of the reinforced tool is 70 mm. The numerical control machining selects constant linear velocity programming to ensure the part machining efficiency and the cutter cutting consistency, the linear velocity is 40m/min, the feeding is 0.16mm/r, and the cutting depth is not more than 0.2 mm. On one hand, the cutter is prevented from being seriously abraded due to the fact that the cutting depth is too deep, and therefore the actual cutting depth of the same feed route is inconsistent; on the other hand, the processing deformation of parts caused by overlarge processing stress is avoided.

In deep cavity machining, the jig of fig. 4 is used for machining. The part firstly passes through the supporting shaft in the clamp and is placed on the clamp base body, a through hole corresponding to a threaded hole of the part is formed in the clamp base body, the lower screwing bolt secondly passes through the through hole in the clamp base body, and the part firstly is screwed. And the screw is ensured not to leak out of the end face of the part, and the influence on the processing feed is avoided. And then an upper gland is placed on the part I, a screw bolt is screwed up through a through hole on the upper gland and a threaded hole of the part, finally a nut is screwed up in the center, and the upper gland is fixed, so that the outer side of the part achieves rigid support and forms a good support mode with the inner side of the part.

After the deep cavity is machined, the fixture of fig. 5 is used for clamping. The auxiliary support is composed of four equal-divided circular rings. The auxiliary support is placed between the part and the two film plates, the auxiliary support and the part are screwed together by using an upper screwing bolt and a lower screwing bolt, then the part and the auxiliary support are placed on the fixture base body, and the part and the auxiliary support are fixed by using a pressing plate. And after the molded surface of the film disc on one side is processed, loosening the pressing plate, turning over the part and the shape following fixture together, and processing the molded surface of the film disc on the other side.

After the turning, the jig of fig. 6 was used to perform clamping. Firstly, the auxiliary support is pulled out outwards, then the part is placed on the part base body, the auxiliary support is pushed into the space between the two membrane discs and supports the part, after the angular relation is adjusted, the bolt is screwed tightly, the upper gland is pressed tightly, the part is prevented from moving axially, and the bolt is screwed tightly at the center. And (3) selecting a phi 8 multi-edge milling cutter for milling, wherein the cutting depth of each layer is 0.6mm, the rotating speed of a main shaft is 840r/min, and the feeding is 300 mm/min.

And finally, machining the process threaded hole of the part into a phi 7.97 round hole specified by a design drawing.