Tool for detecting machining precision of inner valve surface of valve

Abstract

The utility model relates to a tool for detecting the machining precision of an inner valve face of a valve, and relates to the technical field of machining precision detection tools. The first shaft bushing and the second shaft bushing are arranged on the mounting shaft in a spaced mode, the abutting face of the first shaft bushing is matched with the outer valve face of the valve and used for abutting against the outer valve face of the valve, and the second shaft bushing is used for stretching into the valve body and abutting against the inner valve face of the valve. Due to the fact that the first shaft bushing and the second shaft bushing are coaxially arranged, on the premise that the abutting face of the first shaft bushing is matched with the outer valve face of the valve, the coaxiality of the outer valve face of the valve and the inner valve face of the valve and the perpendicularity of the inner valve face of the valve can be judged according to the situation that the second shaft bushing abuts against the inner valve face of the valve. The coaxiality of the outer valve face and the inner valve face of the valve and the perpendicularity of the inner valve face of the valve can be conveniently and rapidly judged, and the problems that in the prior art, resources and time are possibly wasted, and production efficiency is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining precision detection tool technical field, concretely relates to a tool for valve inner valve face machining precision detection. BACKGROUND

[0002] The valve inner valve face is the key part of the valve, and the advantages and disadvantages of the machining precision and detection performance thereof will directly affect the safety, service life and use efficiency of the product. Since the carrier is usually selected from austenitic stainless steel, duplex stainless steel, copper alloy, titanium alloy and other high-hardness and corrosion-resistant materials, the carrier has the characteristics of high toughness, low thermal conductivity and poor machinability, and some uncertain factors exist in the machining process; and the internal space of the valve body is small and deep, and the conventional detection measuring tools cannot be used and measured.

[0003] In the prior art, the general inspection method is to measure the inner diameter by using a cylinder gauge, and to measure the relative position of the valve face and the valve body by using a depth gauge, and the inspection of the tolerance of the valve face width, coaxiality and perpendicularity is relied on the machine tool precision, the experience of the construction personnel and the process guarantee (taking the correction of the external plane or the inner diameter of the related stopper as the reference to ensure that the valve face and the position are processed and formed in one go).

[0004] However, the measurement process has certain detection risks and errors, and if there is an error or unqualified product, the subsequent assembly will be found to cause rework or scrap, which may waste resources and time and reduce production efficiency. UTILITY MODEL CONTENTS

[0005] The application provides a tool for valve inner valve face machining precision detection, which can solve the problem of the measurement process in the prior art, that is, there are certain detection risks and errors, and if there is an error or unqualified product, the subsequent assembly will be found to cause rework or scrap, which may waste resources and time and reduce production efficiency.

[0006] In a first aspect, the embodiments of the application provide a tool for valve inner valve face machining precision detection, which comprises:

[0007] a mounting shaft;

[0008] a first shaft bushing and a second shaft bushing, which are arranged at intervals on the mounting shaft, the abutting surface of the first shaft bushing is matched with the outer valve face of the valve and is used for abutting on the outer valve face of the valve, and the second shaft bushing is used for extending into the valve body and abutting on the inner valve face of the valve.

[0009] In an embodiment, the lower side of the second shaft bushing is provided with sandpaper, and the sandpaper is used for abutting on the inner valve face of the valve.

[0010] In an embodiment, the mounting shaft is further provided with a baffle, the baffle is arranged on the side of the sandpaper away from the second shaft bushing, and is used to abut the sandpaper against the second shaft bushing, and the outer diameter of the baffle is smaller than the inner diameter of the valve inner valve surface.

[0011] In an embodiment, the sandpaper has a circular ring cross section, the sandpaper is sleeved on the mounting shaft, and is coaxially arranged with the second shaft bushing and the baffle, and the outer diameter of the sandpaper is greater than the outer diameter of the baffle.

[0012] In an embodiment, the outer diameter of the baffle is slightly smaller than the inner diameter of the valve inner valve surface, and when the baffle extends into the valve inner valve surface, the outer wall of the baffle is used to abut against the inner wall of the valve inner valve surface.

[0013] In an embodiment, the sandpaper and the baffle are fixed to the lower side of the second shaft bushing through a nut.

[0014] In an embodiment, the first shaft bushing includes a large-diameter section and a small-diameter section, the large-diameter section is located outside the small-diameter section, the large-diameter section is used to abut against the valve outer valve surface, and the small-diameter section is used to extend into the valve outer valve surface.

[0015] In an embodiment, a snap gauge is further included, and the snap gauge is detachably arranged on the mounting shaft.

[0016] In an embodiment, a threaded hole is arranged in the middle of the snap gauge, and the threaded hole is used to threadedly cooperate with the mounting shaft.

[0017] In an embodiment, the snap gauge is arranged on the upper side of the first shaft bushing.

[0018] The technical scheme provided by the embodiments has the following beneficial effects:

[0019] When the tool for detecting the machining precision of the valve inner valve surface is used, the first shaft bushing and the second shaft bushing are arranged on the mounting shaft, the abutment surface of the first shaft bushing matches the valve outer valve surface, and is used to abut against the valve outer valve surface, and the second shaft bushing is used to extend into the valve body and abut against the valve inner valve surface. Since the first shaft bushing and the second shaft bushing are coaxially arranged, the coaxiality of the valve outer valve surface and the valve inner valve surface and the perpendicularity of the valve inner valve surface can be judged through the abutment of the second shaft bushing against the valve inner valve surface on the premise that the abutment surface of the first shaft bushing matches the valve outer valve surface, the coaxiality of the valve outer valve surface and the valve inner valve surface and the perpendicularity of the valve inner valve surface can be conveniently and quickly judged, and the problem that there is a certain detection risk and error in the measurement process in the prior art, and if there is an error or unqualified product, the product will be found during subsequent clamping, causing rework or scrap, and there is a problem of possible waste of resources and time and reduction of production efficiency is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions in the embodiments of the present application clearer, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 The utility model discloses a structure schematic drawing for the tool embodiment for valve inner valve face machining precision detection.

[0022] Figure 2 The utility model discloses a schematic drawing when the tool embodiment for valve inner valve face machining precision detection is used.

[0023] Figure 3 The utility model discloses a structure schematic drawing of the snap gauge in the tool embodiment for valve inner valve face machining precision detection.

[0024] Figure 4 The utility model discloses a schematic drawing when the snap gauge in the tool embodiment for valve inner valve face machining precision detection is used.

[0025] In the drawing: 1, mounting shaft; 2, first shaft bush; 3, second shaft bush; 4, valve outer valve face; 5, valve inner valve face; 6, sandpaper; 7, baffle; 8, nut; 9, snap gauge; 91, threaded hole. DETAILED DESCRIPTION

[0026] In order to make the technical solutions in the embodiments of the present application clearer, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0027] The utility model embodiment provides a tool for valve inner valve face machining precision detection, and can solve the detection risk and error in the measurement process in the prior art, and if there is an error or unqualified product, the subsequent clamp installation will cause rework or scrap, and there is a problem of possible waste of resources and time and reduction of production efficiency.

[0028] As shown in Figure 1 and Figure 2 The utility model provides a tool for valve inner valve face machining precision detection, which comprises:

[0029] a mounting shaft 1;

[0030] The first shaft bushing 2 and the second shaft bushing 3 are arranged on the mounting shaft 1 in a spaced manner, the abutting surface of the first shaft bushing 2 is matched with the valve outer valve surface 4 and is used for abutting on the valve outer valve surface 4, and the second shaft bushing 3 is used for extending into the valve body and abutting on the valve inner valve surface 5.

[0031] When the tool for detecting the machining precision of the valve inner valve surface is used, the first shaft bushing 2 and the second shaft bushing 3 are arranged on the mounting shaft 1 in a spaced manner, the abutting surface of the first shaft bushing 2 is matched with the valve outer valve surface 4 and is used for abutting on the valve outer valve surface 4, and the second shaft bushing 3 is used for extending into the valve body and abutting on the valve inner valve surface 5. Since the first shaft bushing 2 and the second shaft bushing 3 are coaxially arranged, the coaxiality of the valve outer valve surface 4 and the valve inner valve surface 5 and the perpendicularity of the valve inner valve surface 5 can be judged by the fact that the second shaft bushing 3 abuts on the valve inner valve surface 5 on the premise that the abutting surface of the first shaft bushing 2 is matched with the valve outer valve surface 4, the coaxiality of the valve outer valve surface 4 and the valve inner valve surface 5 and the perpendicularity of the valve inner valve surface 5 can be conveniently and quickly judged, and the problem that there is a certain detection risk and error in the measurement process in the prior art, if there is an out-of-tolerance or unqualified product, the product will be found when it is subsequently clamped, which will cause rework or scrap, resources and time may be wasted, and the production efficiency is reduced.

[0032] In this example, if the second shaft bushing 3 is matched with the inner side of the valve inner valve surface 5, the coaxiality of the valve outer valve surface 4 and the valve inner valve surface 5 can be judged by whether the second shaft bushing 3 can be put into the valve inner valve surface 5, if the diameter of the second shaft bushing 3 is greater than the inner diameter of the valve inner valve surface 5, the perpendicularity of the valve inner valve surface 5 can be judged by the following method: a small amount of uniform red ocher powder is applied on the valve inner valve surface 5 with a brush, the mounting shaft 1 is pressed downward, the tool for detecting the machining precision of the valve inner valve surface is taken out, and the valve inner valve surface 5 is checked along the circumferential vertical intersection of any four corners, if the contact of the valve inner valve surface 5 with the red ocher pressure mark is uniform, it is considered that the perpendicularity of the valve inner valve surface 5 is qualified, otherwise it is unqualified.

[0033] As shown in Figure 1 and Figure 2 In some optional embodiments, the lower side of the second shaft bushing 3 is provided with sandpaper 6, and the sandpaper 6 is used for abutting on the valve inner valve surface 5.

[0034] In this embodiment, the lower side of the second shaft bushing 3 is provided with sandpaper 6, and the sandpaper 6 is used for abutting on the valve inner valve surface 5, the mounting shaft 1 is rotated by 90°, and then the tool is taken out, the grinding mark is observed, if the width and the circumferential contact are uniform, it is considered that the perpendicularity of the valve inner valve surface 5 is qualified, otherwise it is unqualified.

[0035] In this example, the sandpaper 6 is selected to be super-fine grinding sandpaper with a fineness of 1500# or more.

[0036] As shown in Figure 1 and Figure 2As shown in the figure, in some alternative embodiments, the mounting shaft 1 is further provided with a baffle 7, which is arranged on the side of the sandpaper 6 away from the second shaft bushing 3, and is used to abut the sandpaper 6 against the second shaft bushing 3. The outer diameter of the baffle 7 is smaller than the inner diameter of the valve inner valve surface 5.

[0037] In this embodiment, the mounting shaft 1 is further provided with a baffle 7, which is arranged on the side of the sandpaper 6 away from the second shaft bushing 3, and is used to abut the sandpaper 6 against the second shaft bushing 3. The outer diameter of the baffle 7 is smaller than the inner diameter of the valve inner valve surface 5, which facilitates the fixing of the sandpaper 6.

[0038] As shown in the figure, Figure 1 and Figure 2 in some alternative embodiments, the cross section of the sandpaper 6 is a circular ring, the sandpaper 6 is sleeved on the mounting shaft 1, and is coaxially arranged with the second shaft bushing 3 and the baffle 7. The outer diameter of the sandpaper 6 is greater than the outer diameter of the baffle 7.

[0039] In this embodiment, the cross section of the sandpaper 6 is a circular ring, the sandpaper 6 is sleeved on the mounting shaft 1, and is coaxially arranged with the second shaft bushing 3 and the baffle 7. The outer diameter of the sandpaper 6 is greater than the outer diameter of the baffle 7, which specifically illustrates the shape of the sandpaper 6, and facilitates the installation of the sandpaper 6.

[0040] As shown in the figure, Figure 1 and Figure 2 in some alternative embodiments, the outer diameter of the baffle 7 is slightly smaller than the inner diameter of the valve inner valve surface 5. When the baffle 7 extends into the valve inner valve surface 5, the outer wall of the baffle 7 is used to abut against the inner wall of the valve inner valve surface 5.

[0041] In this embodiment, the outer diameter of the baffle 7 is slightly smaller than the inner diameter of the valve inner valve surface 5. When the baffle 7 extends into the valve inner valve surface 5, the outer wall of the baffle 7 is used to abut against the inner wall of the valve inner valve surface 5. The perpendicularity of the valve inner valve surface 5 can be measured at the same time, and the coaxiality of the valve outer valve surface 4 and the valve inner valve surface 5 can be judged. Under the premise that the abutting surface of the first shaft bushing 2 matches the valve outer valve surface 4, when the baffle 7 can extend into the valve inner valve surface 5, the valve outer valve surface 4 and the valve inner valve surface 5 are coaxial.

[0042] As shown in the figure, Figure 1 in some alternative embodiments, the sandpaper 6 and the baffle 7 are fixed on the lower side of the second shaft bushing 3 through a nut 8.

[0043] In this embodiment, the sandpaper 6 and the baffle 7 are fixed on the lower side of the second shaft bushing 3 through a nut 8, which facilitates the replacement of the sandpaper 6 and the baffle 7, facilitates repair, and also improves the applicability of the tool for valve inner valve surface machining precision detection. The sandpaper 6 and the baffle 7 of appropriate size can be replaced according to needs.

[0044] As shown in the figure, Figure 1 and Figure 2As shown in the drawings, in some optional embodiments, the first shaft bushing 2 comprises a large-diameter section and a small-diameter section, the large-diameter section is located outside the small-diameter section, the large-diameter section is used for abutting on the outer valve surface 4 of the valve, and the small-diameter section is used for extending into the outer valve surface 4 of the valve.

[0045] In the embodiment, the structure of the first shaft bushing 2 is specifically illustrated, the first shaft bushing 2 comprises a large-diameter section and a small-diameter section, the large-diameter section is located outside the small-diameter section, the large-diameter section is used for abutting on the outer valve surface 4 of the valve, and the small-diameter section is used for extending into the outer valve surface 4 of the valve, so that the first shaft bushing 2 is matched with the outer valve surface 4 of the valve, and the matching effect is good.

[0046] As shown in the drawings, Figure 3 and Figure 4 As shown in the drawings, in some optional embodiments, the tool further comprises a snap gauge 9, and the snap gauge 9 is detachably arranged on the mounting shaft 1.

[0047] In the embodiment, the tool for detecting the machining precision of the inner valve surface of the valve further comprises the snap gauge 9, and the snap gauge 9 is detachably arranged on the mounting shaft 1, so that the measurement of the valve surface width of the inner valve surface 5 of the valve is facilitated. When the width round corner of the inner valve surface 5 of the valve is checked to meet the requirements, the maximum limit width size of the valve surface is checked by using the go gauge to divide four points, then the minimum limit width size of the valve surface is checked by using the not go gauge to divide four points, and when the go gauge passes the not go gauge, it is judged that the valve surface width meets the requirements of the drawings.

[0048] As shown in the drawings, Figure 3 In some optional embodiments, the snap gauge 9 is provided with a threaded hole 91 in the middle, and the threaded hole 91 is used for threaded cooperation with the mounting shaft 1.

[0049] In the embodiment, the threaded hole 91 is arranged in the middle of the snap gauge 9, and the threaded hole 91 is used for threaded cooperation with the mounting shaft 1, so that the connection is tight and the connection effect is improved.

[0050] In some optional embodiments, the snap gauge 9 is arranged on the upper side of the first shaft bushing 2.

[0051] In the embodiment, the snap gauge 9 is arranged on the upper side of the first shaft bushing 2, so that the snap gauge 9 is convenient to take, and the judgment process of the coaxiality of the outer valve surface 4 and the inner valve surface 5 of the valve and the perpendicularity of the inner valve surface 5 of the valve is not affected.

[0052] In summary, when using the tool for detecting the machining precision of the inner valve surface of the valve, the first shaft bushing 2 and the second shaft bushing 3 are arranged on the mounting shaft 1 at intervals, the abutting surface of the first shaft bushing 2 matches the outer valve surface 4 of the valve and is used for abutting on the outer valve surface 4 of the valve, and the second shaft bushing 3 is used for extending into the valve body and abutting on the inner valve surface 5 of the valve. Since the first shaft bushing 2 and the second shaft bushing 3 are coaxially arranged, the coaxiality of the outer valve surface 4 and the inner valve surface 5 of the valve and the perpendicularity of the inner valve surface 5 of the valve can be judged through the condition that the second shaft bushing 3 abuts on the inner valve surface 5 of the valve on the premise that the abutting surface of the first shaft bushing 2 matches the outer valve surface 4 of the valve. The coaxiality of the outer valve surface 4 and the inner valve surface 5 of the valve and the perpendicularity of the inner valve surface 5 of the valve can be conveniently and quickly judged, and the problem that there is a certain detection risk and error in the measurement process in the prior art, if there is an error or unqualified product, the subsequent clamping will cause rework or scrap, and there is a problem of possible waste of resources and time and reduction of production efficiency is solved.

[0053] In the description of the present application, it should be noted that the positions or positional relationships indicated by the terms "upper", "lower", etc. are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0055] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A tool for detecting the machining accuracy of the inner valve surface of a valve, characterized in that, The utility model relates to a valve installation shaft, which comprises: a mounting shaft (1); a first shaft bushing (2) and a second shaft bushing (3) are arranged on the mounting shaft (1) at intervals, the abutting surface of the first shaft bushing (2) is matched with a valve outer valve surface (4) and is used for abutting on the valve outer valve surface (4), and the second shaft bushing (3) is used for extending into a valve body and abutting on a valve inner valve surface (5).

2. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 1, characterized in that, The lower side of the second shaft bushing (3) is provided with sandpaper (6), and the sandpaper (6) is used for abutting on the valve inner valve surface (5).

3. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 2, characterized in that, The mounting shaft (1) is further provided with a baffle (7), the baffle (7) is arranged on the side, away from the second shaft bushing (3), of the sandpaper (6) and is used for abutting the sandpaper (6) on the second shaft bushing (3), and the outer diameter of the baffle (7) is smaller than the inner diameter of the valve inner valve surface (5).

4. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 3, characterized in that, The sandpaper (6) has a circular ring cross section, is sleeved on the mounting shaft (1) and is coaxially arranged with the second shaft bushing (3) and the baffle (7), and the outer diameter of the sandpaper (6) is greater than the outer diameter of the baffle (7).

5. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 3, characterized in that, The outer diameter of the baffle (7) is slightly smaller than the inner diameter of the valve inner valve surface (5), and when the baffle (7) extends into the valve inner valve surface (5), the outer wall of the baffle (7) is used for being attached to the inner wall of the valve inner valve surface (5).

6. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 2, characterized in that, The sandpaper (6) and the baffle (7) are fixed to the lower side of the second shaft bushing (3) through a nut (8).

7. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 1, characterized in that, The first shaft bushing (2) comprises a large-diameter section and a small-diameter section, the large-diameter section is located outside the small-diameter section, the large-diameter section is used for abutting on the valve outer valve surface (4), and the small-diameter section is used for extending into the valve outer valve surface (4).

8. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 1, characterized in that, A caliper gauge (9) is further included, and the caliper gauge (9) is detachably arranged on the mounting shaft (1).

9. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 8, characterized in that, A threaded hole (91) is arranged in the middle of the caliper gauge (9), and the threaded hole (91) is used for screwing with the mounting shaft (1).

10. A tool for detecting the machining accuracy of the inner surface of a valve according to claim 9, characterized in that, The caliper gauge (9) is arranged on the upper side of the first shaft bushing (2).

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