阅读说明：本技术 一种鼓风机扩散器型面检验工装 (Air blower diffuser profile inspection tool ) 是由 李永胜 何小宏 时林 李致宇 刘世伟 于 2019-12-30 设计创作，主要内容包括：本发明公开了一种鼓风机扩散器型面检验工装包括：工装本体以及与工装本体可拆卸连接的支撑架。工装本体包括底座、与底座一体成型自底座向上延伸的曲面检验部以及设置于曲面检验部内的卡槽,曲面检验部的侧面为与扩散器的进气道型线的弯曲方向一致的标准型曲面,支撑架卡入卡槽与工装本体连接；支撑架包括卡入卡槽内的支撑杆、设置于底座底部的压板、用于连接支撑杆和压板的锁定螺杆以及与锁定螺杆的尾端连接的把手,转动把手即可带动工装本体旋转。(The invention discloses a blower diffuser profile inspection tool, which comprises: the tool body and the support frame detachably connected with the tool body. The tool body comprises a base, a curved surface inspection part and a clamping groove, the curved surface inspection part and the base are integrally formed, the curved surface inspection part extends upwards from the base, the clamping groove is arranged in the curved surface inspection part, the side surface of the curved surface inspection part is a standard curved surface which is consistent with the bending direction of the molded line of the air inlet channel of the diffuser, and the supporting frame is clamped into the clamping groove and connected with the tool body; the support frame includes the bracing piece of card income draw-in groove, set up in the clamp plate of base bottom, be used for the locking screw of connecting support pole and clamp plate and with the handle of trailing end connection of locking screw, rotate the handle and can drive the frock body rotatory.)

1. The utility model provides a blower diffuser profile inspection frock which characterized in that includes: the tool comprises a tool body (3) and a support frame (12) detachably connected with the tool body (3);

the tool body (3) comprises a base, a curved surface inspection part and a clamping groove (6), wherein the curved surface inspection part and the base are integrally formed, the curved surface inspection part extends upwards from the base, the clamping groove (6) is arranged in the curved surface inspection part, the side surface of the curved surface inspection part is a standard curved surface (4) which is consistent with the bending direction of an air inlet channel molded line of a diffuser, and the supporting frame (12) is clamped into the clamping groove (6) to be connected with the tool body (3);

the support frame (12) comprises a support rod (8) clamped in the clamping groove (6), a pressing plate (9) arranged at the bottom of the base, a locking screw rod (10) used for connecting the support rod (8) and the pressing plate (9), and a handle (11) connected with the tail end of the locking screw rod (10), and the tool body (3) can be driven to rotate by rotating the handle (11);

curved surface inspection portion standard type curved surface (4) surface coating inspection solution, general frock body (3) make in the intake duct molded lines of diffuser is detained to curved surface inspection portion standard type curved surface (4) and the laminating of intake duct molded lines rotate support frame (12) handle (11) drive standard type curved surface (4) are pasting the rotation of intake duct molded lines, the friction of intake duct molded lines standard type curved surface (4) surface production scratch.

2. The blower diffuser profile inspection tool according to claim 1, wherein the depth of the snap groove (6) is greater than four-fifths of the height of the curved inspection portion.

3. The blower diffuser profile inspection tool according to claim 2, wherein the tool body (3) is of a hollow structure, and the clamping groove (6) is formed in a hollow inner cavity of the curved surface inspection portion and extends from the top of the curved surface inspection portion to the base.

4. The blower diffuser profile inspection tool of claim 1, wherein the base further comprises a stepped groove (7) disposed at the bottom of the base for inspecting the diameter of the bottom surface outer circle of the diffuser.

5. The blower diffuser profile inspection tool according to claim 4, wherein the stepped groove (7) is a two-step stepped groove, the stepped groove (7) comprises a first stepped groove and a second stepped groove which are sequentially and inwardly arranged from the bottom surface of the base, the diameter of the first stepped groove is larger than the standard size of the outer circle of the bottom of the diffuser, and the diameter of the second stepped groove is smaller than the standard size of the outer circle of the bottom of the diffuser.

6. The blower diffuser profile inspection tool of claim 5, wherein the standard dimension of the outer circle of the diffuser bottom is R, the diameter of the first stepped groove is R + a, and the diameter of the second stepped groove is R-a; a is more than or equal to 0.001mm and less than or equal to 0.01 mm.

7. The blower diffuser profile inspection tool of claim 5, wherein the base has a height of 21-25mm, the first stepped slot has a depth of 4-6mm, and the second stepped slot has a depth of 4-6 mm.

8. The blower diffuser profile inspection tool of claim 5, wherein the first stepped slot, the second stepped slot and the base are on the same axis.

9. The blower diffuser profile inspection tool according to claim 3, wherein the side wall of the curved inspection portion is provided with at least one inwardly recessed chip pocket (5).

Technical Field

The invention relates to the technical field of air blower detection, in particular to a tool for detecting the molded surface of a diffuser of an air blower.

Background

The impeller of air-blower is installed inside the diffuser, and fan intake duct molded lines are used for controlling the clearance of intake duct and impeller, and this clearance has important influence to the air-blower performance, can cause the air-blower efficiency to reduce if the clearance is too big, and the clearance undersize can make the impeller operation hindered, makes impeller blade wearing and tearing even, reduces the impeller life-span. The diffuser is installed in the air runner outside, and inside the cylindrical boss of diffuser bottom gos deep into the air runner, excircle size is the cooperation size. The overlarge excircle size of the diffusion bottom can prevent the diffuser from being installed in an air inlet flow channel, and the undersize can prevent the diffuser from being matched with the air inlet flow channel to cause gas leakage, so that the efficiency of the blower is reduced. The diffuser inlet profile and hence the outer circle size are important dimensions in blower testing. After the production of each diffuser is completed, the molded line of the air inlet and the size of the excircle need to be detected.

There are two current methods of detecting important blower sizes: manual inspection and measurement using high precision inspection equipment such as a three-coordinate measuring machine. The manual inspection is to put the impeller into the diffuser, inspect the molded line of the air inlet channel by manually rotating the impeller to observe the gap and the scratch, and inspect the size of the excircle of the bottom by using a caliper or a micrometer. The method has poor precision and low efficiency, and is not suitable for batch production inspection. The method for measuring by using high-precision inspection equipment such as a three-coordinate measuring instrument has high precision, but has low efficiency and high cost, and is not suitable for batch production.

Chinese patent application 201711260774.8 discloses an inlet duct profile line detection tool, which comprises a body, an inlet duct is arranged in the axis direction of the body, the inlet duct comprises a straight line part and an arc line part, the outer wall of the lower port of the body extends outwards to form a circular boss part, a positioning groove is arranged on the circular boss part, the tool for detecting the sizes of the straight line part and the arc line part in the inlet duct comprises a positioning ring and a detection sample plate, a detection groove is arranged on the detection sample plate, the detection groove comprises a vertical wall part and an arc line wall part, the vertical wall part is attached to the straight line part after the detection sample plate is arranged on the inlet duct of the body, and the arc line wall part; the detection sample plate is provided with a positioning boss which is clamped in the positioning groove of the body. However, the structural rigidity of the detection tool is poor, the tool needs to be manually rotated in the detection process, and the molded line of the air inlet channel cannot be fitted; the sample plate and the positioning ring can be deformed by heating in the welding process, the accurate relative position cannot be kept, and the positioning precision is low; whether the gap exists or not needs to be observed by a quality inspector through naked eyes, and the gap is still difficult to ensure through the naked eyes even if the gap is operated by inspectors with abundant experience.

Therefore, it is an urgent technical problem for those skilled in the art to provide a tool for inspecting the important dimensions of the impeller and the diffuser, which has high inspection accuracy, high inspection efficiency, reduced production cost, and is suitable for mass production.

Disclosure of Invention

In order to solve the technical problem, the invention provides a profile inspection tool for a diffuser of a blower, which is used for inspecting the molded line of an air inlet duct and the size of an excircle at the bottom of the diffuser of an impeller of the blower.

According to an aspect of the present invention, there is provided a blower diffuser profile inspection tool, comprising: the tool body and the support frame detachably connected with the tool body. The tool body comprises a base, a curved surface inspection part and a clamping groove, the curved surface inspection part and the base are integrally formed, the curved surface inspection part extends upwards from the base, the clamping groove is formed in the curved surface inspection part, the side face of the curved surface inspection part is a standard curved surface which is consistent with the bending direction of an air inlet channel molded line of the diffuser, and the supporting frame is clamped into the clamping groove and connected with the tool body. The support frame includes the bracing piece of card income draw-in groove, set up in the clamp plate of base bottom, be used for the locking screw of connecting support pole and clamp plate and with the handle of trailing end connection of locking screw, rotate the handle and can drive the frock body rotatory.

Optionally, the depth of the slot is greater than four fifths of the height of the curved surface inspection portion.

Optionally, the tool body is of a hollow structure, and the clamping groove is formed in the hollow inner cavity of the curved surface inspection portion and extends from the top of the curved surface inspection portion to the base direction.

Optionally, the base further comprises a stepped groove provided at the bottom of the base for checking the diameter of the outer circumference of the bottom surface of the diffuser.

Optionally, the stepped groove is a two-step stepped groove, the stepped groove comprises a first stepped groove and a second stepped groove which are sequentially and inwardly arranged from the bottom surface of the base, the diameter of the first stepped groove is larger than the standard size of the excircle at the bottom of the diffuser, and the diameter of the second stepped groove is smaller than the standard size of the excircle at the bottom of the diffuser.

Optionally, the standard size of the excircle at the bottom of the diffuser is R, the diameter of the first stepped groove is R + a, and the diameter of the second stepped groove is R-a; a is more than or equal to 0.001mm and less than or equal to 0.01 mm.

Optionally, the height of the base is 21-25mm, the depth of the first stepped groove is 4-6mm, and the depth of the second stepped groove is 4-6 mm.

Optionally, the first step groove and the second step groove are on the same axis with the base.

Optionally, a handle connected with the tail end of the locking screw rod is arranged on the tool body supporting frame, and the tool body can be driven to rotate by rotating the handle.

Optionally, the side wall of the curved checking portion is provided with at least one inwardly recessed chip pocket.

The invention discloses a method for inspecting the molded line of an air inlet passage of a diffuser by using a blower diffuser molded surface inspection tool, which comprises the following steps of:

(1) and (4) inversely placing the diffuser on the workbench, and upwards placing the larger inlet passage molded line size of the diffuser.

(2) The outer wall of the standard molded line curved surface of the inspection tool is uniformly coated with the inspection solution, the handle is held by a hand, the inspection tool is buckled into the air inlet channel, the tool body is pressed downwards with force, and meanwhile the handle is held to rotate the tool body.

(3) And taking out the tool body, observing scratches of the standard molded line curved surface, if the scratches are uniformly distributed, indicating that the machining precision of the molded line of the air inlet channel is better, and if the local scratches are more or have no scratches, indicating that the machining error of the molded line of the air inlet channel is larger, and needing further treatment.

Alternatively, the test solution is a coloured solution, for example a indigo violet solution.

Optionally, the tool body inspection tool is buckled into the air inlet, and the handle is rotated at least to drive the standard type curved surface to rotate 45 degrees in the air inlet. Preferably, the standard profile rotates 360 ° within the inlet.

The invention discloses a method for inspecting the size of an excircle at the bottom of a diffuser by using a blower diffuser profile inspection tool, which comprises the following steps:

placing the tool on a workbench in an inverted manner, and enabling the stepped groove to face upwards;

both hands embrace the diffuser and make intake duct molded lines face down, slowly put into the ladder inslot with the bottom excircle of diffuser. If the outer circle at the bottom of the diffuser can enter the first stepped groove but can not enter the second stepped groove, the size of the outer circle is qualified. If the outer circle can enter the second stepped groove, the size of the outer circle is smaller; if the first step groove can not be entered, the excircle size is over-large.

The invention has the following beneficial effects that:

1. the structural rigidity is good. This frock body of inspection frock uses monoblock material cutting process to form, and whole rigidity is good.

2. The molded line curved surface positioning precision of the blower diffuser molded surface inspection tool is high, the molded line curved surface on the tool is completely fitted with the diffuser air inlet curved surface, and the tool is automatically centered by means of self gravity.

3. According to the blower diffuser profile inspection tool, whether a gap exists is judged no longer through a visual inspection method, whether the gap exists is judged through a method of smearing colored solution on the curved surface of the molded line of the tool, pressing the diffuser and the curved surface of the tool tightly and then manually rotating the tool, and the inspection precision is higher.

4. The surface of the blower diffuser profile inspection tool is subjected to strengthening treatment, so that the wear resistance is improved, and the service life is long.

5. The support rod and the handle arranged on the inspection tool are convenient to operate, the structure can be designed into a universal part, the inspection tool can be applied to diffuser inspection tools of various types, serialization is convenient to realize, and the inspection tool is simple to operate, low in cost and high in efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a blower diffuser profile inspection tool of the present invention;

fig. 2 is a schematic structural view of a tool body 3 of the blower diffuser profile inspection tool of the present invention;

FIG. 3 is a cross-sectional view of a tool body 3 of the blower diffuser profile inspection tool of the present invention;

fig. 4 is a sectional view of a diffuser for inspection.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that, in the embodiments and examples of the present application, the feature vectors may be arbitrarily combined with each other without conflict.

The invention is further described below with reference to the accompanying drawings.

The invention discloses a blower diffuser profile inspection tool which is used for inspecting the dimensions of an air inlet type line 1 and the bottom excircle of a diffuser, wherein the diffuser is structurally shown in figure 4.

As shown in fig. 1, the blower diffuser profile inspection tool of the present invention includes: the tool comprises a tool body 3 and a support frame 12 detachably connected with the tool body 3. The tool body 3 comprises a base, a curved surface inspection part and a clamping groove 6, wherein the curved surface inspection part and the clamping groove 6 are integrally formed with the base and extend upwards from the base, and the stepped groove 7 is formed in the bottom of the base and used for inspecting the diameter of the outer circle of the bottom surface of the diffuser. The side of the curved surface inspection part is a standard curved surface 4 which is consistent with the bending direction of the air inlet molded line 1 of the diffuser, and the support frame 12 is clamped into the clamping groove 6 and connected with the tool body 3. The support frame 12 comprises a support rod 8 clamped in the clamping groove 6, a pressing plate 9 arranged at the bottom of the base, a locking screw 10 used for connecting the support rod 8 and the pressing plate 9, and a handle 11 of the tool body 3 connected with the tail end of the locking screw 10, and the tool body 3 can be driven to rotate by rotating the handle 11 of the support frame 12.

Preferably, tool body 3 is hollow structure, and draw-in groove 6 sets up and extends to the base direction from curved surface inspection portion top in the cavity inner chamber of curved surface inspection portion, and the degree of depth of draw-in groove 6 is greater than the four fifths of curved surface inspection portion height, and under this condition, handle 11 drives tool body 3 rotation more easily, and operating personnel rotates handle 11 and easily laborsaving more.

Preferably, the stepped groove 7 is a two-step stepped groove, the stepped groove 7 includes a first stepped groove and a second stepped groove which are sequentially and inwardly arranged from the bottom surface of the base, the diameter of the first stepped groove is larger than the maximum standard size of the bottom excircle of the diffuser, and the diameter of the second stepped groove is smaller than the minimum standard size of the bottom excircle of the diffuser. The standard size of the excircle at the bottom of the diffuser is R, the diameter of the first stepped groove is R + a, and the diameter of the second stepped groove is R-a; a is more than or equal to 0.001mm and less than or equal to 0.01 mm. The value of a is set according to the precision requirement of the diffuser to be detected, and the higher the precision requirement, the smaller the value of a. As a preferred embodiment, the diameter of the diffuser is 203.98mm, the diameter of the first stepped groove is 203.99mm, and the diameter of the second stepped groove is 203.97 mm. a is-0.01 mm- - - - - +0.01 mm.

The height of the base is 21-25mm, the depth of the first step groove is 4-6mm, the depth of the second step groove is 4-6mm, and the first step groove, the second step groove and the base are coaxially arranged. Wherein, first step groove, second step groove and base are on same axis, with the focus of frock in the middle of the frock under this condition, avoid the frock to impress the pressure that produces the intake duct molded lines of diffuser uneven, and the scratch that produces with intake duct molded lines 1 friction when frock body 3 is rotatory is even, reduces because of the judgement error of the different productions of the mar depth that frock weight distribution is inhomogeneous leads to, and it is higher to be convenient for more observe the judgement degree of accuracy.

Wherein the used colored test solution is a indigo solution. Preferably, the side wall of the curved surface inspection part is provided with at least one inward-concave chip groove 5, under the condition, the indigo solution coated on the standard molded line curved surface 4 is convenient to remove, namely after the molded surface is inspected, residual indigo solution on the surface is wiped into the chip groove 5 by using alcohol and cleaning cloth. The presence of the chip flutes 5 improves the cleaning quality and efficiency. More preferably, the side wall of the curved surface inspection part is uniformly provided with a plurality of inward-recessed chip flutes 5, and the area occupied by the chip flutes 5 is less than one third of the surface area of the side wall of the curved surface inspection part.

When the air blower diffuser profile inspection tool is used for inspecting an air inlet molded line 1 of a diffuser, a indigo violet solution is coated on the surface of a standard type curved surface 4 of a curved surface inspection part, the curved surface inspection part of a tool body 3 is buckled into the air inlet molded line 1 of the diffuser, so that the standard type curved surface is attached to the air inlet molded line 1, a handle 11 of a support frame 12 is rotated to drive the standard type curved surface to be attached to the air inlet molded line 1, a colored inspection solution is rotated to rub the surface of the standard type curved surface 4 with the air inlet molded line 1 to generate scratches, the tool body 3 is taken out, and the surface scratches of the standard type curved surface 4. And if the local scratches are more or no scratches, the processing error of the inlet profile 1 is larger, and further processing is required. After one diffuser is inspected, cleaning redundant solution or impurities on the surface of the standard type curved surface 4 of the tool, and then continuously inspecting the next diffuser.

Preferably, the curved surface inspection part of the tool body 3 is buckled into the diffuser, the handle 11 of the support frame 12 is rotated by at least 45 degrees, and then the tool body 3 is taken out from the diffuser. For example, the handle 11 may be rotated by 45 °, 90 °, 180 °, 360 °, or the like according to the operating conditions.

When the blower diffuser profile inspection tool inspects the size of the bottom excircle 2 of the diffuser, the tool is placed on a workbench in an inverted mode, and the stepped groove 7 is upward; both hands hold the diffuser and make inlet duct molded lines 1 face down, slowly put into ladder groove 7 bottom excircle 2, if diffuser bottom excircle 2 can get into first ladder groove and can not get into second ladder groove, explain 2 sizes of excircle are qualified. If the outer circle 2 can enter the second stepped groove, the size of the outer circle is smaller; if the first step groove can not be entered, the outer circle 2 surface is oversize.

It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.