阅读说明：本技术 一种用于高温合金零件大余量电解加工的装夹装置 (Clamping device for large-allowance electrolytic machining of high-temperature alloy parts ) 是由 吴旭刚 袁昊 温亮 曹勇 刘培科 于 2021-08-12 设计创作，主要内容包括：一种用于高温合金零件大余量电解加工的装夹装置,属于装夹装置技术领域。所述用于高温合金零件大余量电解加工的装夹装置包括底座以及设置于底座上方的定位部和压紧部,定位部包括固设于底座的定位环以及设置于定位环顶部的定位销钉,定位销钉用于对零件进行角向定位,压紧部包括固设于底座中心的中心螺杆以及可拆卸设置于中心螺杆的压盖,压盖用于压紧零件。所述用于高温合金零件大余量电解加工的装夹装置降低了电解加工中短路、过热、烧蚀等问题的发生,有效提高了电解加工零件的合格率,降低了加工成本。(A clamping device for large-allowance electrolytic machining of high-temperature alloy parts belongs to the technical field of clamping devices. The clamping device for large-allowance electrolytic machining of the high-temperature alloy parts comprises a base, a positioning portion and a pressing portion, wherein the positioning portion and the pressing portion are arranged above the base, the positioning portion comprises a positioning ring and a positioning pin, the positioning pin is fixedly arranged on the base, the positioning pin is arranged at the top of the positioning ring, the positioning pin is used for angularly positioning the parts, the pressing portion comprises a central screw fixedly arranged at the center of the base and a pressing cover detachably arranged on the central screw, and the pressing cover is used for pressing the parts. The clamping device for large-allowance electrolytic machining of the high-temperature alloy part reduces the problems of short circuit, overheating, ablation and the like in electrolytic machining, effectively improves the qualification rate of the electrolytic machining part and reduces the machining cost.)

1. A clamping device for large-allowance electrolytic machining of high-temperature alloy parts is characterized by comprising a base, a positioning part and a pressing part, wherein the positioning part and the pressing part are arranged above the base;

the positioning part comprises a positioning ring fixedly arranged on the base and a positioning pin arranged at the top of the positioning ring, and the positioning pin is used for angularly positioning the part;

the pressing part comprises a central screw fixedly arranged at the center of the base and a pressing cover detachably arranged on the central screw, and the pressing cover is used for pressing parts.

2. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein the base is of a disc-shaped structure.

3. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts as claimed in claim 1, wherein the base is provided with an annular groove and an alignment ring belt, and the coaxiality of the alignment ring belt and the positioning ring is not more than 0.02 mm.

4. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein a locking gasket and a locking nut matched with the central screw rod are further arranged above the gland.

5. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein the flatness of the contact part of the gland and the parts is not lower than 0.03 mm.

6. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein the flatness of the contact part of the positioning ring and the parts is not lower than 0.02 mm.

7. The clamping device for high-temperature alloy part large-allowance electrolytic machining according to claim 1, wherein metal components in the clamping device for high-temperature alloy part large-allowance electrolytic machining are made of stainless steel materials.

8. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein the positioning pin is made of an insulating material.

9. The clamping device for large-allowance electrolytic machining of high-temperature alloy parts according to claim 1, wherein a lifting ring is further arranged on the base.

Technical Field

The invention relates to the technical field of clamping devices, in particular to a clamping device for large-allowance electrolytic machining of high-temperature alloy parts.

Background

At present, a part clamping device for traditional machining is relatively perfect in structural characteristics, clamping modes, material types of components and the like. However, as a new technology for processing difficult-to-process materials (high-temperature alloys, titanium alloys, and the like), the electrochemical machining technology is fundamentally different from the conventional mechanical machining technology in technical inheritance. Although China has been researched and explored for many years in the field of electrolytic machining, the application of related technologies is in the leading position of the world. However, in the field of parts clamping devices for electrolytic machining, the research and research of related technologies are still in the beginning stage. The clamping device is specially used for electrolytic machining, and no clear mature technology can be used for reference at present.

With the continuous progress of the technology of the aero-engine, various high-temperature alloy materials are widely applied to the field of engine manufacturing. Meanwhile, the practical situations of poor processing performance, high processing cost, low processing efficiency and the like of the high-temperature alloy material are also objective problems which are difficult to fundamentally solve by the traditional mechanical processing. As a new technology, the electrochemical machining technology is applied to machining of various difficult-to-cut materials due to a series of advantages of no cutting stress generated in the machining process, no limitation of the machined materials, low machining cost, high machining efficiency and the like. However, the fundamental difference between the electrochemical machining technology and the conventional mechanical machining technology also causes that the existing mature experience of the conventional mechanical machining cannot be directly applied in the technical process, and the problems of short circuit, overheating, ablation and the like easily caused by unreasonable clamping in the existing high-temperature alloy part large-surplus electrochemical machining are caused, so that the problems of machining pause, partial damage of an electrode, increase of machining cost, prolongation of machining period, electrode burning, part scrapping and even possible damage of an electrolytic machine tool are caused if the problems occur slightly, and therefore, new exploration and challenges are faced in the aspects of clamping structures, clamping characteristics, clamp materials and the like.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a clamping device for large-allowance electrolytic machining of high-temperature alloy parts, which reduces the occurrence of short circuit, overheating, ablation and other problems in electrolytic machining, effectively improves the qualification rate of the electrolytic machining parts and reduces the machining cost.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a clamping device for large-allowance electrolytic machining of high-temperature alloy parts comprises a base, and a positioning part and a pressing part which are arranged above the base;

the positioning part comprises a positioning ring fixedly arranged on the base and a positioning pin arranged at the top of the positioning ring, and the positioning pin is used for angularly positioning the part;

the pressing part comprises a central screw fixedly arranged at the center of the base and a pressing cover detachably arranged on the central screw, and the pressing cover is used for pressing parts.

Further, the base is of a disc-shaped structure.

Furthermore, the base is provided with an annular groove and an alignment ring belt, and the coaxiality of the alignment ring belt and the positioning ring is not more than 0.02 mm.

Furthermore, a locking gasket and a locking nut matched with the central screw rod are further arranged above the gland.

Further, the flatness of the contact part of the gland and the part is not less than 0.03 mm.

Further, the flatness of the contact part of the positioning ring and the part is not lower than 0.02 mm.

Furthermore, all the metal components in the clamping device for the large-allowance electrolytic machining of the high-temperature alloy parts are made of stainless steel materials.

Furthermore, the locating pin is made of an insulating material.

Furthermore, a hanging ring is further arranged on the base.

The invention has the beneficial effects that:

1) the structure of the clamping device and the selection of materials of all structural components greatly reduce the occurrence of short circuit, overheating, ablation and other problems in electrolytic machining, effectively improve the qualification rate of electrolytic machining parts and greatly reduce the machining cost;

2) the clamping device disclosed by the invention passes field verification and is popularized and applied in other production plants, and through field processing comparison, the clamping device disclosed by the invention can effectively reduce the phenomena of short circuit, overheating, ablation and the like of electrolytic processing by 70%, reduce processing pause, improve the processing efficiency by 50%, reduce electrode damage, reduce the processing cost by 30%, reduce the risk of part out-of-tolerance and improve the part qualification rate by 50%.

Additional features and advantages of the invention will be set forth in part in the detailed description which follows.

Drawings

FIG. 1 is a cross-sectional view of a clamping device for large-allowance electrolytic machining of a high-temperature alloy part according to an embodiment of the invention;

FIG. 2 is a schematic perspective view of a clamping device for large-allowance electrochemical machining of a high-temperature alloy part according to an embodiment of the present invention;

FIG. 3 is a top view of a clamping device for large-allowance electrochemical machining of a high-temperature alloy part according to an embodiment of the invention;

FIG. 4 is a partially enlarged schematic view of a clamping device for large-allowance electrochemical machining of a high-temperature alloy part according to an embodiment of the present invention.

Reference numerals in the drawings of the specification include:

1-locating pin, 2-locking nut, 3-locking gasket, 4-gland, 5-locating ring, 6-base, 7-central screw, 8-hanging ring, 9-fixing screw, 10-part, 11-annular groove and 12-aligning annular belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In order to solve the problems in the prior art, as shown in fig. 1 to 4, the invention provides a clamping device for large-allowance electrolytic machining of high-temperature alloy parts, which comprises a base 6, and a positioning part and a pressing part which are arranged above the base 6;

the positioning part comprises a positioning ring 5 fixedly arranged on the base 6 and a positioning pin 1 arranged at the top of the positioning ring 5, and the positioning pin 1 is used for angularly positioning the part 10;

the pressing part comprises a central screw 7 fixedly arranged at the center of the base 6 and a pressing cover 4 detachably arranged on the central screw 7, and the pressing cover 4 is used for pressing the part 10.

In the technical scheme, the central screw 7 is used for connecting the base 6 with the gland 4, the positioning ring 5 is used for positioning the part 10, the positioning pin 1 is used for positioning the part 10 at an angular direction and matched with an angular hole in the part 10, so that the positioning accuracy is ensured, the processing qualified rate is improved, and the size of the positioning pin 1 can be determined according to the size of the angular hole in the part 10.

The base 6 is of a disc-shaped configuration.

Among the above-mentioned technical scheme, base 6 is used for bearing a whole set of clamping device, and 6 bottoms of base are provided with set screw 9, and set screw 9 is used for being connected clamping device and electrolytic machining machine tool, and base 6 can not have the opening with the plane of position ring contact, guarantees that the contact is abundant, avoids causing the short circuit.

The base 6 is provided with an annular groove 11 and an alignment ring belt 12, and the coaxiality of the alignment ring belt 12 and the positioning ring 5 is not more than 0.02 mm.

In the technical scheme, the outer circle of the base 6 is the alignment ring belt 12, and in order to facilitate the processing and positioning of the part 10, the coaxiality of the alignment ring belt 12 and the positioning spigot of the positioning ring 5 is not more than 0.02 mm. As the electrolytic machining needs to use a flow field protection system with a certain structure according to the characteristics of the machined part 10, the annular groove 11 is used for installing the flow field protection system, and in the embodiment, the width of the annular groove 11 is 3mm and the depth of the annular groove is 6 mm.

A locking gasket 3 and a locking nut 2 matched with the central screw 7 are also arranged above the gland 4.

In the above technical solution, the lock nut 2 is used for locking the part 10, and the lock washer 3 is used for increasing the locking area.

The flatness of the contact part of the gland 4 and the part 10 is not less than 0.03 mm.

Among the above-mentioned technical scheme, for avoiding compressing tightly the area undersize and causing part 10 local short circuit scheduling problem, closing device adopts the gland 4 structure of face contact, and simultaneously for guaranteeing to compress tightly the area, the part of gland 4 and part 10 contact need grind the level, and its plane degree should not be less than 0.03 mm.

The flatness of the contact part of the positioning ring 5 and the part 10 is not less than 0.02 mm.

In the technical scheme, in order to ensure the compression area and avoid local short circuit, the contact part of the positioning ring 5 and the part 10 is ground flat, and the flatness of the positioning ring is not lower than 0.02 mm.

The metal components of the clamping device for the large-allowance electrolytic machining of the high-temperature alloy parts are all made of stainless steel materials.

In the above technical solution, since the electrolyte solution of the electrolytic machining will corrode the relevant components of the clamping device to some extent, all the metal components of the whole clamping device are made of stainless steel (such as 1Cr18Ni9Ti), in this embodiment, the materials of the locking gasket 3, the gland 4, the positioning ring 5, the base 6, the central screw 7, the hanging ring 8 and the fixing screw 9 are all stainless steel.

The locating pin 1 is made of insulating materials.

In the technical scheme, because the contact area between the positioning pin 1 and the part 10 is small, in order to avoid processing short circuit, the material of the positioning pin should be ceramic or polyethylene and other insulating materials.

The base 6 is also provided with a hanging ring 8.

Among the above-mentioned technical scheme, rings 8 are used for the hoist and mount and the turnover of clamping device.

Taking the large-allowance electrolytic machining of a certain high-temperature alloy part 10 as an example, the specific use mode of the clamping device for large-allowance electrolytic machining of the high-temperature alloy part is described in detail as follows:

placing a clamping device on an electrolytic processing machine tool, aligning and centering the ring belt 12, and ensuring that the circumferential runout is not more than 0.03 mm;

step two, screwing the fixing screw 9, and fixing the clamping device on the electrolytic machining machine tool;

thirdly, positioning the part 10 on the positioning ring 5 according to the position of the positioning pin 1;

step four, covering the gland 4 and screwing the locking nut 2 according to a certain torque requirement;

installing the flow field protection system in an annular groove 11 of the base 6;

and sixthly, carrying out electrolytic machining on a certain station of the high-temperature alloy part 10.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.