Arc height piece fixing tool

Abstract

The utility model discloses a camber height piece fixing tool which is characterized in that when the camber height piece fixing tool is used, a first camber height piece, a second camber height piece and a third camber height piece are respectively placed in a first shallow groove, a second shallow groove and a third shallow groove, and shot blasting operation is carried out on the camber height piece fixing tool by shot blasting equipment; as the first mounting groove and the second mounting groove are formed in the same outer surface of the tool body, shot blasting can be carried out on the first arc height piece, the second arc height piece and the third arc height piece at the same time through one shot blasting operation, the shot blasting effects of the tooth surface and the tooth root of the gear to be tested are simulated at the same time, and the shot blasting strength consistency of the tooth surface and the tooth root is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shot peening detection of gear tooth roots, in particular to an arc height plate fixing tool. Background Art

[0002] In the gear processing industry, conventional shot peening processes have high requirements for residual compressive stress on the gear tooth root and low requirements on the tooth surface. Existing special gear structural parts require that the shot peening strength of the tooth surface and tooth root be consistent and meet the shot peening strength requirements of the drawings. According to the current shot peening process control methods, it is difficult to ensure the consistency of shot peening strength of the tooth surface and tooth root during process debugging, and often the situation of losing one thing while focusing on the other occurs, that is, the shot peening effect of the tooth surface and tooth root cannot be guaranteed at the same time.

[0003] Therefore, how to ensure the consistency of shot peening strength between the tooth surface and the tooth root is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an arc height plate fixing tool to ensure the consistency of shot peening strength between the tooth surface and the tooth root;

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An arc height plate fixing tool comprises a tool body, wherein the tool body is provided with a first mounting groove and a second mounting groove, wherein:

[0007] The first mounting groove and the second mounting groove are provided on the same outer surface of the tool body;

[0008] The first mounting groove is a V-shaped groove, including a first groove surface and a second groove surface;

[0009] The first groove surface is provided with a first shallow groove, the first shallow groove is used to place the first arc height plate, the second groove surface is provided with a second shallow groove, the second shallow groove is used to place the second arc height plate, the first arc height plate and the second arc height plate are used to simulate the shot peening effect of the tooth surface of the gear to be tested;

[0010] The second installation groove is a concave groove, and a third shallow groove is opened on the bottom surface of the second installation groove. The third shallow groove is used to place a third arc height plate, and the third arc height plate is used to simulate the shot peening effect of the tooth root of the gear to be tested.

[0011] Optionally, in the above-mentioned arc height plate fixing tooling, the first shallow groove, the second shallow groove and the third shallow groove are provided with screw holes, the first arc height plate, the second arc height plate and the third arc height plate are provided with mounting holes, and the first arc height plate, the second arc height plate and the third arc height plate are respectively connected with the first shallow groove, the second shallow groove and the third shallow groove by bolts.

[0012] Optionally, in the above-mentioned arc height plate fixing tool, the first shallow groove, the second shallow groove and the third shallow groove are rectangular, and their edges include at least one raised portion.

[0013] Optionally, in the above-mentioned arc height plate fixing tool, the first shallow groove, the second shallow groove and the third shallow groove each include four lifting parts, and the twelve lifting parts are respectively arranged at the four corners of the first shallow groove, the second shallow groove and the third shallow groove.

[0014] Optionally, in the above-mentioned arc height plate fixing tool, the second installation groove includes a third groove surface and a fourth groove surface arranged relatively, and the third groove surface and the fourth groove surface both include an inclined surface and a vertical surface, and the vertical surface is connected to the bottom surface of the second installation groove.

[0015] Optionally, in the above-mentioned arc height plate fixing tooling, the distance from the center of the first shallow groove to the top of the first mounting groove is h, the distance from the bottom of the second mounting groove to the top of the first mounting groove is H, the longest distance between the first groove surface and the second groove surface is a, two chamfered corners with a radius of R are connected to form the bottom of the first mounting groove, the angle between the first groove surface and the second groove surface is α, and the module of the gear to be measured is Mn.

[0016] Optionally, in the above-mentioned arc height piece fixing tool, when 10≤Mn≤17mm, h=20mm, H=32mm, 36mm<a<42 mm, 56°<α<60°, 2mm<R<3mm.

[0017] Optionally, in the above-mentioned arc height piece fixing tool, when 17≤Mn≤23mm, h=38mm, H=55mm, 68mm<a<72 mm, 58°<α<62°, 4mm<R<5mm.

[0018] Optionally, in the above-mentioned arc height piece fixing tool, when 23≤Mn≤30mm, h=54mm, H=70mm, 80mm<a<86 mm, 60°<α<64°, 6mm<R<7mm.

[0019] The arc height plate fixing tool provided by the utility model, when in use, the first arc height plate, the second arc height plate and the third arc height plate are respectively placed in the first shallow groove, the second shallow groove and the third shallow groove, and the shot peening equipment performs shot peening operation on the arc height plate fixing tool. Because the first mounting groove and the second mounting groove are arranged on the same outer surface of the tool body, the first arc height plate, the second arc height plate and the third arc height plate can be shot peened at the same time in one shot peening operation, thereby simulating the shot peening effect of the tooth surface and the tooth root of the gear to be tested at the same time, and ensuring the consistency of the shot peening strength of the tooth surface and the tooth root. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an overall structural diagram of the arc height plate fixing tool disclosed in the embodiment of the utility model;

[0022] Figure 2 It is a front view of the arc height plate fixing tool disclosed in the embodiment of the utility model;

[0023] in:

[0024] Tool body 100 , first groove surface 200 , first shallow groove 201 , second groove surface 300 , second shallow groove 301 , third shallow groove 400 , inclined surface 401 , vertical surface 402 , and lifting portion 500 . DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making novel work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] The Almen test piece, also known as the Alman test piece, the Almin test piece, the shot peening test piece, the arc height test piece (hereinafter referred to as the arc height piece) or the strengthening test piece, is a standard specimen used to characterize the effect of shot peening. When the test piece is impacted by a projectile, its surface layer undergoes plastic deformation, causing the test piece to bend spherically toward the ejection surface. The distance between the highest point of this sphere and a specific reference plane that cuts into the sphere is called the arc height. This arc height can be used to measure the intensity generated during the shot peening process.

[0028] When using Almen test strips, it is usually necessary to use a test strip holder to mount it on the machine and then perform the shot blasting or shot peening process. After processing, the test strip will bend and deform due to the impact. At this time, the test strip can be placed on the Almen measuring instrument, which will accurately absorb the test strip and display the current arc height value intensity. By observing the changes in the shot peening intensity value, the shot peening time of the shot peening machine can be controlled. In general, the Almen test strip is an important tool for measuring and evaluating the intensity and effectiveness of the shot peening process.

[0029] Gear shot peening is a surface strengthening process that sprays projectiles (such as cast steel shot, cast iron shot, glass shot, ceramic shot, etc.) at high speed onto the gear surface, causing it to be impacted and plastically deformed, thereby forming a residual compressive stress layer on the surface. This process is intended to increase the hardness, wear resistance and fatigue resistance of the gear surface, while improving its resistance to plastic deformation and fracture.

[0030] The design of the Almen test piece makes it sensitive to the intensity of shot peening or shot blasting. By measuring the arc height value on the test piece, the strengthening effect of shot peening or shot blasting on the surface of the part can be accurately evaluated, so as to optimize the treatment parameters and ensure the treatment quality. Therefore, the existing technology often uses Almen test pieces (arc height pieces) instead of gears for direct shot peening.

[0031] like Figure 1As shown, the arc height plate fixing tool disclosed in the utility model includes a tool body 100, and the tool body 100 is provided with a first mounting groove and a second mounting groove, wherein the first mounting groove and the second mounting groove are provided on the same outer surface of the tool body 100, and the first mounting groove is a V-shaped groove, including a first groove surface 200 and a second groove surface 300, and the first groove surface 200 is provided with a first shallow groove 201, and the first shallow groove 201 is used to place the first arc height plate, and the second groove surface 300 is provided with a second shallow groove 301, and the second shallow groove 301 is used to place the second arc height plate, and the first arc height plate and the second arc height plate are used to simulate the shot peening effect of the tooth surface of the gear to be tested, and the second mounting groove is a concave groove, and the bottom surface of the second mounting groove is provided with a third shallow groove 400, and the third shallow groove 400 is used to place the third arc height plate, and the third arc height plate is used to simulate the shot peening effect of the tooth root of the gear to be tested. Specifically, the tool body 100 is a proportional replica of a single tooth groove of the gear to be tested and is obtained by wire cutting. A plane is obtained by cutting downward along both sides of the tooth root of the gear to be tested to the same horizontal plane of the tooth root, i.e., the bottom surface of the second mounting groove. The bottom surface of the second mounting groove simulates the tooth root of the gear to be tested. The first groove surface 200 and the second groove surface 300 simulate the two tooth surfaces of the tooth groove of the gear to be tested. Therefore, when the shot peening equipment shot peens the tool body 100, the shot peening effect of the corresponding position of the gear to be tested during shot peening can be predicted by the arc height values ​​of the first arc height plate, the second arc height plate and the third arc height plate. The arc height plate fixing tool provided by the utility model, when in use, places the first arc height plate, the second arc height plate and the third arc height plate in the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 respectively, and the shot peening equipment performs shot peening operation on the arc height plate fixing tool. Because the first mounting groove and the second mounting groove are provided on the same outer surface of the tool body 100, the first arc height plate, the second arc height plate and the third arc height plate can be shot peened at the same time in one shot peening operation, thereby simulating the shot peening effect of the tooth surface and the tooth root of the gear to be tested at the same time, and ensuring the consistency of the shot peening strength of the tooth surface and the tooth root.

[0032] In order to optimize the above technical solution, the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 are provided with screw holes, the first arc height plate, the second arc height plate and the third arc height plate are provided with mounting holes, and the first arc height plate, the second arc height plate and the third arc height plate are bolted to the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 respectively. When in use, the first arc height plate is fixed to the first shallow groove 201, the second arc height plate is fixed to the second shallow groove 301, and the third arc height plate is fixed to the third shallow groove 400 by bolts. The operator installs the tool body 100 on the workbench of the shot peening equipment so that the position of the third shallow groove 400 corresponds to the position of the tooth groove of the gear to be tested during shot peening, and uses the shot peening gun to aim at the third arc height plate, and shot peens the tool body 100. After shot peening, the arc height values ​​of the first arc height plate, the second arc height plate and the third arc height plate are measured, so as to predict the shot peening effect of the corresponding position of the gear to be tested during shot peening. The tool body 100 and the first arc height plate, the second arc height plate and the third arc height plate can be fastened together by bolt connection, thereby ensuring the shot peening effect, and at the same time making the tool body 100 and the first arc height plate, the second arc height plate and the third arc height plate detachable, so as to facilitate the secondary utilization of the first arc height plate, the second arc height plate and the third arc height plate.

[0033] In order to optimize the above technical solution, the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 are rectangular, and their edges include at least one raised portion 500. Specifically, the first arc height sheet, the second arc height sheet and the third arc height sheet are rectangular, so the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 are rectangular to better adapt to the shapes of the first arc height sheet, the second arc height sheet and the third arc height sheet. Specifically, the edge of the lifting portion 500 is irregularly shaped. When the arc height sheet is arranged inside the shallow groove, the lifting portion 500 will not be covered by the arc height sheet. During the shot peening process, the high-speed jet projectiles will cause the first arc height sheet, the second arc height sheet and the third arc height sheet to be impacted and plastically deformed, thereby making the first arc height sheet, the second arc height sheet and the third arc height sheet tightly attached to the parts covering the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400, making them inconvenient to remove. Therefore, the provision of the lifting portion 500 can facilitate manual prying of the first arc height sheet, the second arc height sheet and the third arc height sheet to separate them from the tooling body 100.

[0034] In some embodiments of the present invention, the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400 all include four lifting parts 500, and the twelve lifting parts 500 are respectively arranged at the four corners of the first shallow groove 201, the second shallow groove 301 and the third shallow groove 400. Further, the lifting parts 500 are in the shape of an arc. Taking the first arc high sheet as an example, the length, width and height of the first shallow groove 201 are all adapted to the first arc high sheet. When the first arc high sheet is arranged inside the first shallow groove 201, the four corners of the first arc high sheet are respectively arranged inside the four lifting parts 500 of the first arc high sheet, but the lifting parts 500 are not covered. The operator can pry the four corners of the first arc high sheet through the lifting parts 500 to separate it from the tooling body 100, thereby saving manpower.

[0035] In order to optimize the above technical solution, the second mounting groove includes a third groove surface and a fourth groove surface arranged relatively, and the third groove surface and the fourth groove surface both include an inclined surface 401 and a vertical surface 402, and the vertical surface 402 is connected to the bottom surface of the second mounting groove. Specifically, the inclination angle of the inclined surface 401 is the same as the inclination angle of the first groove surface 200. Specifically, when the tooling body 100 is shot peened, the high-speed ejected projectiles will bounce on the bottom surface of the second mounting groove, the third groove surface and the fourth groove surface. The end of the third groove surface and the fourth groove surface away from the bottom surface of the second mounting groove is designed as an inclined surface 401, which can make the projectile rebound away from the second mounting groove, and will not interfere with the rebound of the projectile of the third arc height plate. At the same time, the projectile ejected to the inclined surface 401 will rebound away from the third arc height plate, thereby further ensuring the accuracy of the arc height value of the third arc height plate. If the third groove surface and the fourth groove surface are all inclined surfaces, it will make the projectile easy to repeatedly rebound at the third arc height plate, the third groove surface and the fourth groove surface, thereby affecting the shot peening effect. Therefore, the third groove surface and the fourth groove surface both include the inclined surface 401 and the vertical surface 402 , which can improve the accuracy of the arc height value tested by the tool body 100 , thereby improving the actual application effect of the tool body 100 .

[0036] like Figure 2 As shown, in order to optimize the above technical solution, the distance from the center of the first shallow groove 201 to the top of the first mounting groove is h, the distance from the bottom of the second mounting groove to the top of the first mounting groove is H, the longest distance between the first groove surface 200 and the second groove surface 300 is a, two chamfers with a radius of R are connected to form the bottom of the first mounting groove, the angle between the first groove surface 200 and the second groove surface 300 is α, and the module of the gear to be measured is Mn. Specifically, the values ​​of h, H, a, R and α of the tool body 100 are different for different modules of the gear to be measured. The operator can adjust the specific parameters of the tool body 100 according to the model of the gear to be measured. It should be noted that α can represent the tooth face angle of the gear to be measured, H can represent the full height of the tooth of the gear to be measured, and the top of the first mounting groove can represent the tooth top of the gear to be measured.

[0037] In some embodiments of the present invention, when 10≤Mn≤17 mm, h=20 mm, H=32 mm, 36 mm<a<42 mm, 56°<α<60°, and 2 mm<R<3 mm.

[0038] In some embodiments of the present invention, when 17≤Mn≤23 mm, h=38 mm, H=55 mm, 68 mm<a<72 mm, 58°<α<62°, 4 mm<R<5 mm.

[0039] In some embodiments of the present invention, when 23≤Mn≤30 mm, h=54 mm, H=70 mm, 80 mm<a<86 mm, 60°<α<64°, and 6 mm<R<7 mm.

[0040] The utility model designs an arc height plate fixing fixture that proportionally replicates a single tooth groove of spur gears with different moduli, so as to intuitively see the shot peening effects at different positions in the tooth groove (tooth root and both sides of the tooth root) during shot peening, and at the same time measures the shot peening data of the worst effect area (both sides of the tooth root of the gear) of spur gears with different moduli after shot peening, so as to carry out targeted optimization of the shot peening strengthening schemes of spur gears with different moduli.

[0041] In summary, the advantages of the arc height plate fixing tool of the utility model are:

[0042] 1. It can simulate the shot peening of the gear tooth root and both sides of the tooth root on a fixed fixture;

[0043] 2. Capable of designing arc height fixing fixtures with different parameters for spur gears of different modules;

[0044] 3. Cut a plane at the tooth root for placing the third arc height plate, thereby simulating the effect of positive shot peening on the tooth root of the gear.

[0045] It should be noted that the two sides of the tooth root are two adjacent tooth surfaces of the gear to be tested.

[0046] It should be noted that the arc height plate fixing tool provided by the utility model can be used in the field of shot peening detection technology for gear tooth roots or other fields. Other fields are any fields other than the field of shot peening detection technology for gear tooth roots. The above is only an example and does not limit the application field of the arc height plate fixing tool provided by the utility model.

[0047] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An arc height plate fixing tool, characterized in that: The tool body comprises a tool body, wherein the tool body is provided with a first mounting groove and a second mounting groove, wherein: The first mounting groove and the second mounting groove are provided on the same outer surface of the tool body; The first mounting groove is a V-shaped groove, including a first groove surface and a second groove surface; The first groove surface is provided with a first shallow groove, the first shallow groove is used to place a first arc height plate, the second groove surface is provided with a second shallow groove, the second shallow groove is used to place a second arc height plate, the first arc height plate and the second arc height plate are used to simulate the shot peening effect of the tooth surface of the gear to be tested; The second installation groove is a concave groove, and a third shallow groove is opened on the bottom surface of the second installation groove. The third shallow groove is used to place a third arc height plate, and the third arc height plate is used to simulate the shot peening effect of the tooth root of the gear to be tested.

2. The arc height plate fixing tool as claimed in claim 1, characterized in that: The first shallow groove, the second shallow groove and the third shallow groove are provided with screw holes, the first arc height plate, the second arc height plate and the third arc height plate are provided with mounting holes, and the first arc height plate, the second arc height plate and the third arc height plate are respectively connected with the first shallow groove, the second shallow groove and the third shallow groove by bolts.

3. The arc height plate fixing tool as claimed in claim 1, characterized in that: The first shallow groove, the second shallow groove and the third shallow groove are rectangular, and the edges of the rectangular grooves include at least one raised portion.

4. The arc height plate fixing tool as claimed in claim 3, characterized in that: The first shallow groove, the second shallow groove and the third shallow groove each include four lifting portions, and the twelve lifting portions are respectively arranged at four corners of the first shallow groove, the second shallow groove and the third shallow groove.

5. The arc height plate fixing tool as claimed in claim 1, characterized in that: The second installation groove includes a third groove surface and a fourth groove surface that are arranged opposite to each other. The third groove surface and the fourth groove surface both include an inclined surface and a vertical surface. The vertical surface is connected to the bottom surface of the second installation groove.

6. The arc height plate fixing tool as claimed in claim 1, characterized in that: The distance from the center of the first shallow groove to the top of the first mounting groove is h, the distance from the bottom of the second mounting groove to the top of the first mounting groove is H, the longest distance between the first groove surface and the second groove surface is a, two chamfers with a radius of R are connected to form the bottom of the first mounting groove, the angle between the first groove surface and the second groove surface is α, and the module of the gear to be measured is Mn.

7. The arc height plate fixing tool as claimed in claim 6, characterized in that: When 10≤Mn≤17mm, h=20mm, H=32mm, 36 mm<a<42 mm, 56°<α<60°, 2mm<R<3mm.

8. The arc height plate fixing tool as claimed in claim 6, characterized in that: When 17≤Mn≤23mm, h=38mm, H=55mm, 68 mm<a<72 mm, 58°<α<62°, 4mm<R<5mm.

9. The arc height plate fixing tool as claimed in claim 6, characterized in that: When 23≤Mn≤30mm, h=54mm, H=70mm, 80 mm<a<86 mm, 60°<α<64°, 6mm<R<7mm.

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