阅读说明：本技术 一种不锈钢连接架、气缸及不锈钢连接架的加工方法 (Stainless steel connecting frame, air cylinder and machining method of stainless steel connecting frame ) 是由 不公告发明人 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种不锈钢连接架,其特征在于,包括：架体；进气孔,开设于所述架体的第一端；排气孔,与所述进气孔相对地开设于所述架体的第二端,并与所述进气孔通过所述架体内部的管路互相连通；以及一对固定耳,设置于所述架体的第二端,并分别位于所述排气孔的两侧,用于固定连接于所述排气孔的管路。基于上述技术方案,本发明实施例至少可以使连接架至少具有耐酸碱腐蚀、结构可靠、性能满足使用要求等优点；且连接架的加工方法不但能够满足设备的使用需要,而且能满足快速、批量化的生产要求。(The invention discloses a stainless steel connecting frame, which is characterized by comprising: a frame body; the air inlet is formed in the first end of the frame body; the exhaust hole is oppositely arranged at the second end of the frame body with the air inlet hole and is mutually communicated with the air inlet hole through a pipeline in the frame body; and the pair of fixing lugs are arranged at the second end of the frame body, are respectively positioned at two sides of the exhaust hole and are used for being fixedly connected with the pipeline of the exhaust hole. Based on the technical scheme, the embodiment of the invention at least has the advantages of acid and alkali corrosion resistance, reliable structure, capability of meeting the use requirement and the like; and the processing method of the connecting frame not only can meet the use requirement of equipment, but also can meet the requirements of rapid and batch production.)

1. A stainless steel link, comprising:

a frame body;

the air inlet is formed in the first end of the frame body;

the exhaust hole is oppositely arranged at the second end of the frame body with the air inlet hole and is mutually communicated with the air inlet hole through a pipeline in the frame body; and

and the pair of fixing lugs are arranged at the second end of the frame body, are respectively positioned at two sides of the exhaust hole and are used for being fixedly connected with the pipeline of the exhaust hole.

2. The stainless steel attachment bracket of claim 1, wherein the distal ends of the pair of securing lugs meet in the axial direction of the exhaust vent, the stainless steel attachment bracket further comprising:

and the fixing holes are formed at the intersection of the tail ends of the pair of fixing lugs.

3. The stainless steel attachment bracket of claim 2, further comprising:

the threaded hole is formed in the outer peripheral surface of the frame body and is used for communicating with an external pipeline; and

the air inlet cavity is arranged at the first end of the frame body in a surrounding manner;

wherein the threaded hole is communicated with the air inlet chamber through an internal pipeline.

4. The stainless steel attachment bracket of claim 3, further comprising:

the seal groove is arranged at the first end of the frame body, is positioned on the peripheral surface of the air inlet cavity and can play a role in sealing when the air inlet cavity is connected with an external pipeline.

5. The stainless steel attachment bracket of claim 4, wherein the axes of the inlet aperture, the outlet aperture, the securing aperture and the inlet chamber are collinear.

6. The stainless steel attachment bracket of claim 1, further comprising:

and the mounting holes are circumferentially distributed on the outer peripheral surface of the frame body and are used for fixing the frame body and the external connecting frame mutually.

7. A cylinder comprising the stainless steel connecting bracket according to any one of claims 1 to 6.

8. A method for processing a stainless steel connecting frame is characterized by comprising the following steps:

selecting acid and alkali corrosion resistant stainless steel casting blank;

carrying out heat treatment on the casting blank;

performing shot blasting treatment on the casting blank;

performing surface electro-polishing on the cast blank subjected to shot blasting treatment to enable the appearance to be smoother and brighter;

processing the first end, the threaded hole and the sealing groove of the frame body by using a precise numerical control lathe; and

and processing the air inlet hole, the exhaust hole, a pipeline between the air inlet hole and the exhaust hole, the first cavity, the fixing lug and the fixing hole by using a numerical control processing center so as to ensure that the dimensional precision and the relative position of each structure of the frame body meet the requirements.

9. The process of claim 8, wherein the heat treating of the cast blank comprises:

preserving heat for 2-4 hours in an environment of 870-950 ℃, and performing air cooling or furnace cooling; and

in the cooling process, when the temperature is 450-850 ℃, the rapid cooling is carried out through air cooling.

10. The machining method according to claim 8, wherein the shot blasting speed of the shot blasting treatment is controlled to be 60-110 m/s in the process of performing the shot blasting treatment on the cast blank until the surface roughness of the cast blank reaches Ra1.6.

Technical Field

The invention relates to the field of accessories for pneumatic equipment, in particular to accessories for a cylinder, and specifically relates to a stainless steel connecting frame, a cylinder and a machining method of the stainless steel connecting frame.

Background

The connecting frame structure for the cylinder is required to be provided with a plurality of interfaces and pipelines which are communicated with the inside and the outside, and the interfaces and the pipelines on the connecting frame are required to be smooth; the interior of the connecting frame needs to bear certain pressure, and a sealing structure is required to be arranged to ensure that the connecting frame is connected with other parts without pressure leakage; meanwhile, the working environment of the connecting frame is considered, and the surface of the material is required to be resistant to acid and alkali corrosion.

However, the existing connecting frame for the cylinder cannot meet the requirement of smooth connection of the interface and the pipeline, has insufficient sealing effect under the condition of bearing certain pressure, and cannot meet the requirement of working under the condition of acid-base corrosion for a long time.

Disclosure of Invention

At least one purpose of the invention is to provide a stainless steel connecting frame, a cylinder and a processing method of the stainless steel connecting frame, so that the connecting frame has the advantages of acid and alkali corrosion resistance, reliable structure, capability of meeting the use requirement and the like; and the processing method of the connecting frame not only can meet the use requirement of equipment, but also can meet the requirements of rapid and batch production.

The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a stainless steel connecting frame, which is characterized by comprising:

a frame body;

the air inlet is formed in the first end of the frame body;

the exhaust hole is oppositely arranged at the second end of the frame body with the air inlet hole and is mutually communicated with the air inlet hole through a pipeline in the frame body; and

and the pair of fixing lugs are arranged at the second end of the frame body, are respectively positioned at two sides of the exhaust hole and are used for being fixedly connected with the pipeline of the exhaust hole.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the ends of the pair of fixing lugs meet in the axial direction of the exhaust hole, and the stainless steel connecting frame further includes:

and the fixing holes are formed at the intersection of the tail ends of the pair of fixing lugs.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

the threaded hole is formed in the outer peripheral surface of the frame body and is used for communicating with an external pipeline; and

the air inlet cavity is arranged at the first end of the frame body in a surrounding manner;

wherein the threaded hole is communicated with the air inlet chamber through an internal pipeline.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

the seal groove is arranged at the first end of the frame body, is positioned on the peripheral surface of the air inlet cavity and can play a role in sealing when the air inlet cavity is connected with an external pipeline.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, axes of the intake hole, the exhaust hole, the fixing hole, and the intake chamber are collinear.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

and the mounting holes are circumferentially distributed on the outer peripheral surface of the frame body and are used for fixing the frame body and the external connecting frame mutually.

The invention provides a cylinder, which comprises a stainless steel connecting frame according to any one of the technical schemes.

The invention provides a processing method of a stainless steel connecting frame, which comprises the following steps:

selecting acid and alkali corrosion resistant stainless steel casting blank;

carrying out heat treatment on the casting blank;

performing shot blasting treatment on the casting blank;

performing surface electro-polishing on the cast blank subjected to shot blasting treatment to enable the appearance to be smoother and brighter;

processing the first end, the threaded hole and the sealing groove of the frame body by using a precise numerical control lathe; and

and processing the air inlet hole, the exhaust hole, a pipeline between the air inlet hole and the exhaust hole, the first cavity, the fixing lug and the fixing hole by using a numerical control processing center so as to ensure that the dimensional precision and the relative position of each structure of the frame body meet the requirements.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the heat treatment process for the cast blank includes:

preserving heat for 2-4 hours in an environment of 870-950 ℃, and performing air cooling or furnace cooling; and

in the cooling process, when the temperature is 450-850 ℃, the rapid cooling is carried out through air cooling.

As for the optimization of any technical scheme or any optimized technical scheme provided in the foregoing or in the following, the shot blasting speed of shot blasting treatment is controlled to be 60-110 m/s in the process of shot blasting treatment on the cast blank until the surface roughness of the cast blank reaches Ra1.6.

Based on the technical scheme, the embodiment of the invention at least has the advantages of acid and alkali corrosion resistance, reliable structure, capability of meeting the use requirement and the like; and the processing method of the connecting frame not only can meet the use requirement of equipment, but also can meet the requirements of rapid and batch production.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a stainless steel connection rack according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a stainless steel connection rack according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a stainless steel connecting frame according to an embodiment of the present invention;

reference numerals: 1. the frame, 2, inlet port, 3, exhaust hole, 4, fixed ear, 5, fixed orifices, 6, screw hole, 7, air inlet chamber, 8, seal groove, 9, mounting hole.

Detailed Description

The contents of the present invention and the points of distinction between the present invention and the prior art can be understood with reference to the accompanying drawings and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown. It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any technical means provided by the invention can be replaced or any two or more technical means or technical characteristics provided by the invention can be combined with each other to obtain a new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without inventive efforts and new technical solutions that can be obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.

The embodiment of the invention provides

The invention provides a stainless steel connecting frame, which is characterized by comprising:

a frame body;

the air inlet is formed in the first end of the frame body;

the exhaust hole is oppositely arranged at the second end of the frame body with the air inlet hole and is mutually communicated with the air inlet hole through a pipeline in the frame body; and

and the pair of fixing lugs are arranged at the second end of the frame body, are respectively positioned at two sides of the exhaust hole and are used for being fixedly connected with the pipeline of the exhaust hole.

Stainless steel is resistant to the corrosion of weak corrosive media such as air, steam, water and the like and chemical corrosive media (such as acid, alkali, salt and the like), has good plasticity, toughness, weldability, corrosion resistance and no magnetism or weak magnetism, has good corrosion resistance in oxidizing and reducing media, and is commonly used for manufacturing acid-resistant equipment, such as corrosion-resistant containers, equipment linings, conveying pipelines, nitric acid-resistant equipment parts and the like. Therefore, the corrosion-resistant stainless steel is adopted to be cast and molded and then is machined.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the ends of the pair of fixing lugs meet in the axial direction of the exhaust hole, and the stainless steel connecting frame further includes:

and the fixing holes are formed at the intersection of the tail ends of the pair of fixing lugs.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

the threaded hole is formed in the outer peripheral surface of the frame body and is used for communicating with an external pipeline; and

the air inlet cavity is arranged at the first end of the frame body in a surrounding manner;

wherein the threaded hole is communicated with the air inlet chamber through an internal pipeline.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

the seal groove is arranged at the first end of the frame body, is positioned on the peripheral surface of the air inlet cavity and can play a role in sealing when the air inlet cavity is connected with an external pipeline.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, axes of the intake hole, the exhaust hole, the fixing hole, and the intake chamber are collinear.

As an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the stainless steel connecting rack further includes:

and the mounting holes are circumferentially distributed on the outer peripheral surface of the frame body and are used for fixing the frame body and the external connecting frame mutually.

The invention provides a cylinder, which comprises a stainless steel connecting frame according to any one of the technical schemes.

The invention provides a processing method of a stainless steel connecting frame, which comprises the following steps:

selecting acid and alkali corrosion resistant stainless steel casting blank; the connecting frame is integrally cast and molded by acid and alkali corrosion resistant stainless steel, meets the requirements of complex structure and corrosion resistance required by design, and has attractive appearance and smooth lines.

Carrying out heat treatment on the casting blank; the connecting frame carries out heat treatment on the cast blank, eliminates the deformation problem caused by unbalanced internal stress after casting, is beneficial to the subsequent part processing and the dimensional stability after finished products, and can not generate the deformation after the part processing.

Performing shot blasting treatment on the casting blank; the connecting frame is subjected to shot blasting treatment, so that the problem of unbalanced stress in the casting is further solved, and meanwhile, the edges and corners of the casting are smooth, and surface particles are uniform and attractive.

Performing surface electro-polishing on the cast blank subjected to shot blasting treatment to enable the appearance to be smoother and brighter; the surface of the connecting frame is electropolished, so that the appearance is smoother and brighter.

Processing the first end, the threaded hole and the sealing groove of the frame body by using a precise numerical control lathe; and

and processing the air inlet hole, the exhaust hole, a pipeline between the air inlet hole and the exhaust hole, the first cavity, the fixing lug and the fixing hole by using a numerical control processing center so as to ensure that the dimensional precision and the relative position of each structure of the frame body meet the requirements. The connecting frame is machined by adopting a high-precision numerical control lathe and a numerical control machining center, so that the high-precision dimensional requirements and relative position requirements of each mounting surface, each hole, each interface, each thread and the like are effectively guaranteed.

As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the heat treatment process for the cast blank includes:

preserving heat for 2-4 hours in an environment of 870-950 ℃, and performing air cooling or furnace cooling; and

in the cooling process, when the temperature is 450-850 ℃, the rapid cooling is carried out through air cooling.

As for the optimization of any technical scheme or any optimized technical scheme provided in the foregoing or in the following, the shot blasting speed of shot blasting treatment is controlled to be 60-110 m/s in the process of shot blasting treatment on the cast blank until the surface roughness of the cast blank reaches Ra1.6.

Based on the technical scheme, the embodiment of the invention at least has the advantages of acid and alkali corrosion resistance, reliable structure, capability of meeting the use requirement and the like; and the processing method of the connecting frame not only can meet the use requirement of equipment, but also can meet the requirements of rapid and batch production.

By adopting the integral casting of stainless steel, the pressure bearing performance of parts is improved, the processing time is reduced, the consistency of the cast blank provides conditions for batch production, and the production efficiency is improved; the deformation of the cast blank is reduced by heat treatment and shot blasting, and the finished product rate of the processed blank is improved; the electropolishing process makes the appearance of the part beautiful, bright and smooth; the high-precision numerical control lathe and the numerical control machining center are adopted for machining, the high-precision size requirements and the relative position requirements of each mounting surface, each hole, each interface, each pipeline and the like are effectively guaranteed, errors during the assembly of the whole machine are reduced, the assembly efficiency is improved, and the performance of the whole machine is improved.

The technical scheme provided by the invention is explained in more detail in the following with reference to the attached drawings.

Fig. 1 is a front view, and is an internal structure diagram of a connecting frame, a cavity (end number 1), an air inlet interface (end number 4), a sealing groove (end number 2) and the like are designed, a numerical control lathe is mainly adopted for processing, the precision requirements for the sizes of an excircle mounting surface, a thread and the sealing groove (end number 2) are high, and the connecting frame is a key part for determining whether pressure leakage exists after the connecting frame is assembled. Fig. 2 is an external structure diagram, which shows the appearance of the connecting frame, wherein the exhaust port and the mounting hole are mainly processed by a numerical control machining center, so as to realize the function of releasing the internal pressure of the cavity (tail number 1). Fig. 3 is a three-dimensional view showing the exposed surface of the connecting frame and the mounting surface of the valve body, the surface of the connecting frame is required to have no sharp edge and to be smooth and beautiful, and the shot blasting and electropolishing process perfectly solves the problem.

The method comprises the steps of selecting an acid-base corrosion resistant stainless steel casting blank, carrying out heat treatment on the blank, further carrying out shot blasting treatment on the blank, further carrying out surface electropolishing on the shot-blasted blank to enable the appearance to be smoother and brighter, machining a sealing surface, a thread and a sealing groove by using a precise numerical control lathe, and then machining interfaces and pipelines at all places by using a numerical control machining center, so that the high-precision size requirements and the relative position requirements of all installation surfaces, holes, interfaces, pipelines and the like are ensured.

The invention has the innovation points that the problems of complex internal pipeline and external shape, high requirements on acid-base corrosion resistance, high requirements on assembly size precision and the like are solved, and the design requirements are met by adopting the processes of integral stainless steel casting, heat treatment, shot blasting, electropolishing, high-precision numerical control machining and the like.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

If the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the description of the invention, the above-described terms are intended to be based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device, mechanism, component, or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.